Disclosure of utility model
The application aims to solve the problem that an elastic framework is difficult to flatten in the prior art to a certain extent, so as to provide a sucker with good adsorption force. To this end, the application provides a suction cup comprising:
The elastic framework is formed into a disc shape formed by a plurality of blades extending along the radial direction, and adjacent blades are connected through bending ribs;
The soft rubber disc is coated on the elastic framework and is used for being attached to the adsorbed surface;
Any blade is along the radial from inside to outside height gradually reduces for the flexible glue dish downside forms a cavity, when external force is to being pressed by the adsorption face the elastic skeleton middle part, a plurality of blades keep away from each other, the muscle of bending is stretched into the extension state by the bending state, the cavity is compressed diminish so that the flexible glue dish laminating in by the adsorption face.
In some embodiments, in the state of no external force, the bending ribs are bent and extended along the interval direction of the adjacent blades, so that the bending ribs can be stretched when the blades are far away from each other.
In some embodiments, the bending rib is formed by one or more continuous V-shaped or U-shaped structures.
In some embodiments, when the bending rib is formed of one or more continuous "V" or "U" shaped structures, the opening of the "V" or "U" shaped structure of the bending rib faces the inside or outside of the elastic skeleton.
In some embodiments, the connection of the bending rib and the blade is spaced from the inner end of the blade by more than half the length of the blade.
In some embodiments, the blade is provided with a short groove near the outer end, and the distance between the connection point of the bending rib and the blade and the inner end of the blade is not more than the distance between the short groove and the inner end of the blade.
In some embodiments, the short groove extends to the outer edge of the blade along the length direction of the blade, so that the blade on two sides of the short groove is formed into two fins, when the elastic framework middle part is pressed by external force, a plurality of the blades are far away from each other, and two fins on each blade are also far away from each other.
In some embodiments, the device further comprises a pressing plate, the pressing plate is shaped into an elastic plate-shaped concave towards one side of the adsorbed surface, the pressing plate is propped against one side of the adsorbed surface opposite to the elastic framework, a plurality of protrusions are arranged on one side, close to the outer end, of the blade, away from the adsorbed surface, the distance between the bending rib and the inner end of the blade is not more than that between the protrusions and the inner end of the blade, when the pressing plate is pressed by external force, and then the elastic framework is pressed, the protrusions are pressed by the outer edge of the pressing plate, so that the soft rubber plate is attached to the adsorbed surface.
In some embodiments, the blade is provided with a short groove near the outer end, the short groove extends to the outer edge of the blade along the length direction of the blade, so that the blade on two sides of the short groove is formed into two fins, and the protrusions are arranged on the fins.
In some embodiments, the pressure plate further comprises a connector fixedly connected to one side of the elastic framework, which is opposite to the adsorbed surface, and a pressing block detachably matched with the connector, wherein a through hole is formed in the middle of the pressure plate, and the pressure plate penetrates through the connector through the through hole and is clamped between the elastic framework and the pressing block.
In some embodiments, an annular step part is arranged at the connection part of the connecting body and the elastic framework, a matching part matched with the annular step part is arranged on one side of the pressure plate, which faces the adsorbed surface, and the matching part is clamped between the pressure block and the annular step part after the pressure block is connected with the connecting body.
In some embodiments, the pressing block comprises a cover body and a tubular body with one end connected with the cover body, the connecting body is shaped like a column, one end of the connecting body is fixedly connected with the elastic framework, the tubular body is sleeved on the connecting body, and when the pressing block is connected with the connecting body, the pressing plate is clamped between the annular step part and one end of the tubular body, which is far away from the cover body;
The tubular body is provided with a clamping groove, a clamping hook is extended from one end, far away from the elastic framework, of the connecting body, and the pressing block and the connecting body are clamped on the clamping groove through the clamping hook to form detachable connection;
Or, be equipped with the internal screw thread on the tubular body, be equipped with the external screw thread on the connector, when the pressure disk clamp is located annular step portion with the tubular body is kept away from the one end of lid, the briquetting with the connector passes through the internal screw thread with the spiro union cooperation of external screw thread forms detachable connection.
In some embodiments, the device further comprises an external connector, the external connector is sleeved on the tubular body and clamped between the cover body and the pressure plate, an annular pressing rib is arranged towards one side of the pressure plate, the projection of the annular pressing rib on the adsorbed surface is located between the bending rib and the projection of the projection on the adsorbed surface, and when the cover body is pressed towards the adsorbed surface by external force, the cover body presses the external connector and then presses the pressure plate through the annular pressing rib.
In some embodiments, the external connector is formed into a housing with an opening facing the platen, and includes an elastic cantilever extending toward the platen in the housing of the external connector, where one side of the external connector abuts against the cover, and the other side of the external connector abuts against the platen through the elastic cantilever.
In some embodiments, the device further comprises an adjusting part, the adjusting part is sleeved on the tubular body and clamped between the cover body and the external connecting part, a plurality of inclined surfaces are arranged on one side of the adjusting part towards the cover body, the inclined surfaces are formed in an end-to-end mode to form an annular shape sleeved on the tubular body, the pressing block is provided with a sliding block matched with the inclined surfaces in an abutting mode, when the flexible glue disc is attached to the adsorbed surface, the annular pressing rib is used for pressing the pressing plate to further press the protrusions, the outer edge of the flexible glue disc is always attached to the adsorbed surface, the adjusting part is rotated, the sliding block is slid to the top end of the inclined surface from the bottom end of the inclined surface, the pressing block is enabled to be far away from the direction lifting of the adsorbed surface, and the middle of the flexible glue disc is enabled to be far away from the adsorbed surface by pulling the connecting body.
In some embodiments, the top end and the bottom end are respectively provided with an upper stop portion and a lower stop portion, the pressing block is provided with a limiting block, and when the adjusting piece rotates, the limiting block is limited between the upper stop portion and the lower stop portion so as to prevent the sliding block from falling out of the inclined surface.
In some embodiments, the upper stop is shaped as a protrusion at and extending from the top end and the lower stop is shaped as a facade at the top end of the other of the inclined surfaces adjacent to the bottom end of any one of the inclined surfaces.
In some embodiments, the device further comprises a pressing plate propped against one side of the adsorbed surface of the elastic framework, a connecting body fixedly connected with one side of the adsorbed surface of the elastic framework, a pressing block detachably matched with the connecting body, and an external connecting piece, wherein the external connecting piece and the pressing plate are sequentially sleeved on the connecting body along the direction deviating from the adsorbed surface, and are clamped between the pressing block and the elastic framework, and a hook or a hanging seat is connected on the external connecting piece for externally connecting a carrying object.
According to the suction cup, the bending ribs which are bent and deformed in advance are used between the blades of the elastic framework, so that the suction cup is pressed on the adsorbed surface, when the blades of the elastic framework are far away from each other, the bending ribs are stretched from a bending state to a relatively straight extension state, the elastic framework can be further flattened, the flexible rubber disc coated on the elastic framework is better attached to the adsorbed surface, air between the flexible rubber disc and the adsorbed surface is discharged more, the suction cup has higher suction force, and meanwhile, the blades are connected in a bending rib mode, so that the elastic framework can be kept as a whole in a natural state without external force, a conical cavity on the flexible rubber disc is kept in a regular state, the problem that the flexible rubber disc is dislocated with each other due to the blades is avoided, and the suction capability is reduced.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:
As shown in fig. 1 and 2, the application discloses a suction cup, which comprises an elastic framework 1 and a flexible plastic disc 2, wherein the flexible plastic disc 2 has good elasticity and flexibility and can bear certain stretching and tearing capacities, so that the suction cup is generally made of plastic materials such as TPE, silica gel, rubber (vulcanization) and soft PVC, when the flexible plastic disc 2 is attached to an adsorbed surface, even if fine unevenness exists on the adsorbed surface, the fine unevenness can be filled by utilizing the material deformation capacity of the flexible plastic disc 2, and the adsorption capacity of the suction cup is further improved. The flexible glue disc 2 is coated on the flexible glue disc 1, the flexible glue disc 2 needs to be provided with a certain support by the flexible glue disc 1, so that the flexible glue disc 2 keeps a relatively stable shape, and random deformation of the flexible glue disc 2 is avoided, and therefore the material of the flexible glue disc 1 is generally selected from plastic materials such as hard PVC, PP, PS, ABS which are relatively harder than the flexible glue disc 2 or sheets with antistatic, flocking and metallizing functions.
Under the state of no external force, the assembly of the elastic framework 1 and the flexible glue disc 2 is used for forming a concave cavity on one side which is attached to the adsorbed surface, the concave cavity is generally conical or spherical, the outer edge of the concave cavity is generally round or elliptical, chamfer square and other regular shapes, when the sucking disc is required to be adsorbed on the adsorbed surface, one side of the concave cavity is generally directed towards the adsorbed surface, and then the other side of the sucking disc is pressed to enable air in the concave cavity to be discharged, so that a certain air pressure difference is formed between the space between the sucking disc and the adsorbed surface and the outside, and the sucking disc is pressed on the adsorbed surface by using atmospheric pressure, thereby completing the adsorption action. In this process, the suction cup becomes flatter than when not adsorbed, so considering that the deformability of the elastic skeleton 1 is worse than that of the flexible glue tray 2, as shown in fig. 2 and 3, the elastic skeleton 1 is shaped into a disc shape composed of a plurality of blades 11, the blades 11 extend along the radial direction of the elastic skeleton 1, that is, extend from the middle position of the elastic skeleton 1 to the edge position of the elastic skeleton 1, when the suction cup is pressed on the adsorbed surface, the spacing between the blades 11 increases, the closer to the edge of the elastic skeleton 1, the larger the spacing increase value of the blades 11 is, the length of the blades 11 can be the same, the edge of the elastic skeleton 1 is circular, the length of the blades 11 can also be different, and the edge of the elastic skeleton 1 can be elliptical, chamfer square or other shapes. Simultaneously, the height of the blades 11 gradually decreases from inside to outside along the radial direction of the elastic framework 1, so that the blades 11 are formed into an arc-shaped surface or an inclined surface, and further the side of the elastic framework 1 facing the adsorbed surface is formed into a spherical or conical concave cavity.
Because the blades 11 are similar to the cantilever extending from the middle of the elastic framework 1, any blade 11 may be dislocated with other blades 11 when the external force is uneven, so as to drive the flexible glue disc 2 coated on the elastic framework 1 to deviate, so that one side of the flexible glue disc 2 facing the adsorbed surface becomes irregular, when the flexible glue disc 2 is pressed on the adsorbed surface, a gas channel or a gas cavity is generated, so that the sucking disc cannot be adsorbed on the adsorbed surface or the adsorption force is poor, therefore, the adjacent blades 11 are also provided with bending ribs 12, the bending ribs 12 and the blades 11 are made of the same material or different materials, but the deformability of the bending ribs 12 is lower than that of the flexible glue disc 2, so that a plurality of blades 11 are connected into a whole through the bending ribs 12, the dislocation of the blades 11 is avoided, and the elastic framework 1 maintains the shape under the state of no external force. When the sucking disc is pressed on the adsorbed surface, the elastic framework 1 is pressed and deformed, the distance between the adjacent blades 11 is increased, the two blades 11 connected by the bending ribs 12 are stretched to be in an extension state from a bending state, so that the projection area of the elastic framework 1 on the adsorbed surface is increased, the concave cavity of the sucking disc is reduced, and the soft rubber disc 2 is attached to the adsorbed surface. According to the bending rib 12 for connecting the blades 11, in the sucking disc adsorption process, the structural deformability of the bending rib 12 is utilized to extend, so that the distance between the blades 11 is increased more thoroughly, and when the sucking disc is pressed, one side of the sucking disc, which faces the adsorbed surface, is closer to a plane, and the space volume formed between the sucking disc and the adsorbed surface is smaller, namely more air is discharged, and therefore, the pressure difference with the outside is equal, and larger adsorption force is generated.
Further, as shown in fig. 3, the bending ribs 12 extend along the interval direction of the adjacent blades 11, that is, the circumferential direction of the elastic skeleton 1, so that when the blades 11 are far away from each other, the direction in which the bending ribs 12 are stretched is the direction in which the blades 11 are far away from each other, so that the bending ribs 12 can be sufficiently stretched, that is, the blades 11 can reach the maximum degree of the mutual distance, and further, the flexible glue disk 2 can be sufficiently flattened.
Of course, the extending direction of the bending rib 12 may be other directions, but in either direction, the extending direction of the bending rib 12 has a component in the direction in which the blades 11 are away from each other, so that the bending rib 12 can maintain a certain tension to the blades 11 in this direction. However, in the design of the suction cup, the self weight of the suction cup should be as small as possible, so that the extending direction of the bending rib 12 is set to be the interval direction of the adjacent blades 11, the volume of the bending rib 12 can be reduced to the greatest extent, and the dead weight of the suction cup can be reduced, so as to avoid reducing the adsorption force of the suction cup.
Specifically, as shown in fig. 3, the bending rib 12 may be in a V shape, two arms of the V shape are respectively connected with one blade 11, when two blades 11 connected with one bending rib 12 are far away from each other, the opening of the V shape is enlarged, so that the length of the bending rib 12 in the direction in which the blades 11 are far away from each other is increased, that is, the bending rib 12 is stretched to be in an elongated state, and the bending rib 12 in the shape is slightly deformed by using the material at the joint of the two arms of the V shape, so that a larger structural deformation of the bending rib 12 is formed, good deformability and deformability are generated, and the service life of the elastic skeleton 1 is prolonged. Of course, the bending rib 12 can be set to be in a shape of a U, namely, the joint of the two arms of the bending rib 12 is smoothly transited, so that the bottom of the whole U shape is slightly deformed when the two adjacent blades 11 are far away, and further, the stress generated by sharp corners at the joint of the two arms of the V shape is avoided, and the reliability of the bending rib 12 is further improved.
Further, the opening of the V-shaped or U-shaped structure of the bending rib 11 faces the inner side or the outer side of the elastic framework 1, as the bottom of the V-shaped or U-shaped structure of the bending rib 11 is a protruding part relative to the joint of the bending rib 11 and the two blades 11, when the opening of the V-shaped or U-shaped structure faces the inner side of the elastic framework 1, namely, the bottom of the V-shaped or U-shaped structure is closer to the edge of the elastic framework 1 than the joint of the bending rib 11 and the two blades 11, when the bending rib 11 is stretched and extended, the two arms of the whole bending rib 11 can drive the part of the flexible glue disc 2 positioned at the joint of the bending rib 11 and the blades 11 to expand, so that the flexible glue disc 2 has better flatness when adsorbed on the adsorbed surface, when the opening of the V-shaped or U-shaped structure faces the outer side of the elastic framework 1, namely, the bottom of the V-shaped or U-shaped structure is closer to the edge of the elastic framework 1 than the joint of the bending rib 11 and the two blades 11, therefore the edge of the bending rib 11 can be kept closer to the edge of the elastic framework 1 than the joint of the bending rib 11 and the blade 11 is more evenly, and the edge of the bending rib 11 can be prevented from being more closely attached to the edge of the elastic framework 1 than the whole edge of the blade 11, and the edge can be more evenly bent than the edge of the elastic framework 1.
In some embodiments, when the distance between two adjacent blades 11 is larger in the natural state, in order to make the bending rib 12 keep a smaller volume and have better deformability, the bending rib 12 may be formed by a plurality of V-shaped or U-shaped structures, that is, a shape of a plane spring is formed, so that the difference between the bending state and the stretching state of the bending rib 12 is the largest, and the number of the V-shaped or U-shaped structures may be adjusted according to the deformability of the material of the bending rib 12 and the distance between two adjacent blades 11.
In some embodiments, since the blades 11 extend along the radial direction of the elastic skeleton 1, that is, the inner ends of the blades 11 are located at the center of the elastic skeleton 1 and the inner ends of all the blades 11 are connected into a whole, the outer ends of the blades 11 are formed into the outer edges of the elastic skeleton 1, so that in order to make the outer ends of all the blades 11 connected into a whole through the bending ribs 12, the possibility that the blades 11 are dislocated with other blades 11 when external force is uneven is reduced, the distance between the connection part of the bending ribs 12 and two adjacent blades 11 and the inner ends of the blades 11 is greater than half the length of the blades 11, that is, the connection part of the bending ribs 12 and two adjacent blades 11 is located in a half length range of the blades 11 close to the outer side of the elastic skeleton 1, so that the inner ends and the outer ends of all the blades 11 can be connected into a whole, and the elastic skeleton 1 has better integrity.
In some embodiments, the blade 11 is provided with a short groove 111 near the outer end. Since the blades 11 extend from the middle to the outer side along the radial direction of the elastic framework 1, the closer to the outer end, the greater the circumferential width of the blades 11, and therefore, if the blades 11 are in a curved shape, the greater the width of the blades which are deformed into a plane needs to be deformed, and therefore, the greater circumferential width is difficult to be pressed into a complete plane, so that the side, which is attached to the surface to be adsorbed, of the flexible glue disk 2 is difficult to form a plane, and the short grooves 111 are arranged, so that the width, which is close to the outer end, of the blades 11 is substantially reduced, and the difficulty of deformation at the outer end of the blades 11 is reduced. Meanwhile, the short groove 111 is formed by removing part of the material on the blade 11, so that the whole weight of the sucker can be reduced, and the influence of the dead weight of the sucker on the adsorption effect is reduced. Meanwhile, in order to make the vane 11 integrally connected, the short groove 111 is provided to reduce the overall width of the vane 11, so the short groove 111 should be located as close to the outer end of the vane 11 or extend to the outer edge of the vane 11 as possible, and be offset from the bending rib 12 in the radial direction of the vane 11, that is, the bending rib 12 is located closer to the inner end of the vane 11 than the short groove 111.
Further, as shown in fig. 3, the short groove 111 extends to the outer edge of the blade 11 along the length direction of the blade 11, so that the short groove 111 divides the outer end of the blade 11 into two parts, forming two fins 112 located at two sides of the short groove 111, when the middle part of the elastic skeleton 2 is pressed by external force, the outer end of the blade 11, that is, the parts of the flexible glue disc 2 corresponding to the two fins 112, firstly contact the adsorbed surface, so that in the force application process of external force, the two fins 112 are always stressed, and as the elastic skeleton 2 becomes continuously flat, the two fins 112 are gradually separated as the adjacent blades 11 are separated from each other, so that the short groove 111 extends to the outer edge of the blade 11, further improving the deformability of the outer end of the blade 11, and enabling the elastic skeleton 1 to be easier to be pressed and deformed.
In some embodiments, as shown in fig. 4, the suction cup further includes a pressure plate 3, which is used for pressing the elastic framework 1 coated with the flexible glue disc 2, that is, the external force applies pressure to the elastic framework 1 coated with the flexible glue disc 2 by pressing the pressure plate 3, the pressure plate 3 is shaped like an elastic disc concave towards one side of the sucked surface, that is, is similar to the overall shape of the elastic framework 1, so that when the middle part of the pressure plate 3 is pressed, the middle part of the pressure plate 3 conducts pressure to the middle part of the elastic framework 1, and then the topmost end of the conical cavity of the suction cup is subjected to the maximum pressure, the outer edge of the pressure plate 3 always presses the outer edge of the elastic framework 1, so that the outer edge of the flexible glue disc 2 always keeps close contact with the sucked surface, and when air between the suction cup and the sucked surface is discharged, a negative pressure cavity is formed between the suction cup and the sucked surface, so as to ensure the suction force of the suction cup. Meanwhile, when the suction disc is pressed, the deformation amplitude of the elastic framework 1 and the soft rubber disc 2 relative to the pressure disc 3 is larger, so that the combination of the elastic framework 1 and the soft rubber disc 2 relatively slides in the radial direction of the elastic framework 1, once the pressure disc 3 contacts the soft rubber disc 2, the soft rubber disc 2 is extremely easy to deform, the friction force between the pressure disc 3 and the soft rubber disc 2 possibly causes the soft rubber disc 2 to twist or deform abnormally to influence the sealing effect, a plurality of bulges 13 are arranged on one side, close to the outer end, of the blade 11, away from the adsorbed surface, of the blade, the bulges 13 are exposed out of the soft rubber disc 2, when the external force presses the pressure disc 3 to press the combination of the elastic framework 1 and the soft rubber disc 2, the outer edge of the pressure disc 3 compresses the bulges 13, even if the combination of the elastic framework 1 and the soft rubber disc 2 relatively slides in the radial direction of the pressure disc 3, and the soft rubber disc 2 are not contacted, and the bulge 13 with relatively high hardness is propped against the disc 3 due to the fact that the soft rubber disc 3 and the soft rubber disc 2 is not contacted, and the sliding resistance between the bulges 13 is far away from the pressure disc 3 and the soft rubber disc 2 is less than the sliding resistance of the pressure disc 2, so that the soft disc 2 is prevented from being directly deformed or deformed normally.
Further, in order to ensure the adhesion between the edge of the suction cup and the surface to be adsorbed to the greatest extent, as shown in fig. 2, the protrusions 13 are located on two fins 112 formed by dividing the blade 11 by the short groove 111, that is, each fin 112 on the outer edge of the elastic framework 1 is provided with a protrusion 13, as shown in fig. 5, the pressing plate 3 presses on the protrusion 13, and further, the edge of the elastic framework 1 is uniformly pressed, so that the soft rubber disc 2 is pressed on the surface to be adsorbed, and the tightness of the soft rubber disc is ensured.
In some embodiments, in order to make the platen 3 smoothly install and fix, as shown in fig. 4, 6, 7 and 8, the sucker is provided with a connector 4, one end of the connector 4 is fixed on one side of the elastic framework 1 opposite to the adsorption surface, the other end of the connector is detachably connected with a pressing block 5, the platen 3 is arranged on the connector 4 in a penetrating way through a through hole 31 arranged on the connector, and is pressed on the elastic framework 1 through the pressing block 5, so that the platen 3 can be smoothly assembled with other components and keep a relatively fixed state, when the sucker is pressed by external force, the platen 3 can be pressed on the edge of the elastic framework 1, and then the edge of the flexible glue disc 2 is pressed on the adsorbed surface, thereby ensuring good tightness and integrity between the components of the sucker.
Specifically, because the elastic framework 1 is formed into a disc shape with a high middle part and a low outer edge, the shape of the pressure plate 3 is similar to that of the elastic framework 1, and the pressure plate 3 is pressed on the bulge 13 on the elastic framework 1, as shown in fig. 4, 6 and 7, an annular step part 41 is arranged at the joint of the elastic framework 1 and the elastic framework 1, a matching part 32 in butt fit with the annular step part 41 is arranged on the pressure plate 3, when the pressure block 5 is arranged on the connecting body 4, the matching part 32 of the pressure plate 3 butts against the pressure plate 5 on one side of the matching part 32, namely, the pressure plate 5 clamps the pressure plate 3, the soft rubber disc 2, the pressure plate 3, the connecting body 4 and the pressure plate 5 into a whole, when the pressure plate 5 is pressed by external force, the middle part of the pressure plate 5 presses the elastic framework 1, and finally the middle part of the soft rubber disc 2 is pressed by the connecting body 4, at the moment, the bulge 13 on the elastic framework 1 is pressed, the soft disc 2 is further pressed by the pressure plate, the edge of the soft disc 2 and the soft disc is kept in butt fit with the suction surface, and the suction disc is pressed by the suction disc.
Specifically, as shown in fig. 9, the pressing block 5 is configured as a combination of a cover 51 and a tubular body 52, the cover 51 is disc-shaped, the tubular body 52 is hollow tubular, and one end of the tubular body is fixedly connected with the cover 51. As shown in fig. 6 and 7, the connection body 4 is shaped like a column so that the tubular body 52 can be fitted over the connection body 4 to press the platen 3 against the annular stepped portion 41 with the annular flat surface on the end of the tubular body 52 remote from the cover body 51. The design mode of the pressing block 5 is beneficial to the connection of the pressing block 5 and the connecting body 4 and can achieve the purpose of pressing the pressing disc 3. The manner in which the pressing block 5 is detachably connected to the connecting body 4 may be selected according to needs, for example, a manner of clamping, screwing, tight fitting, or the like, that is, only the pressing block 5 may be connected to the connecting body 4 along the direction of pressing the pressing plate 3. When the connection mode of the pressing block 5 and the connecting body 4 is the clamping connection, as shown in fig. 9, the pressing block 5 is provided with a clamping groove 53, as shown in fig. 6, the connecting body 4 is provided with a clamping hook 42, the clamping hook 42 is formed into a protruding block at the end part of the cantilever extending towards the pressing block 5, two clamping hooks 42 are symmetrically arranged, two corresponding clamping grooves 53 are also arranged, when the connecting body 4 is sleeved into the tubular body 52, the clamping hook 42 hooks the side wall of the clamping groove 53, and then the pressing block 5 and the connecting body 4 are connected into a whole, obviously, the distance between the clamping hook 42 and the annular step part 41 is equal to the distance between the clamping groove 53 and the end part of the tubular body 52, which is far away from one end of the cover body 51, so that when the clamping hook 42 and the clamping groove 53 are in clamping connection, the annular plane of the end part 52, which is far away from the cover body 51, just presses the platen 3 which is in butt fit with the annular step part 42. When the connection mode of briquetting 5 and connector 4 is the spiro union, can set up the internal thread in the body of the tubular body 52, set up the external screw thread in the outside of connector 4, and then with briquetting 5 screwed on connector 4 for both connect as an organic wholely, this kind of connection mode makes the distance between briquetting 5 and the annular step portion 42 be adjustable, with the pressure disk 3 of adaptation different thickness or provide different clamping degree to pressure disk 3 through briquetting 5 and annular step portion 42 when the assembly, improve the adaptability of product.
The utility model provides a sucker, which is mainly used for mounting articles, such as connecting hooks for hanging household tools such as besom, mop, kitchen ware and the like, or a plurality of suckers are used for connecting a carrier together for hanging towels or carrying other articles, therefore, in some embodiments, as shown in fig. 10 and 11, the sucker further comprises an external connector 6 which is sleeved on a tubular body 52 and clamped between a cover body 51 and a pressure plate 3, an annular pressing rib 61 is arranged on one side of the external connector 6 facing the pressure plate 3, and the external connector 6 presses the pressure plate 3 through the annular pressing rib 61, so that the pressure plate 3 presses the elastic framework 1.
In the above manner, the annular bead 61 is used for transmitting external pressure to the platen 3, and finally presses the annular bead 61 on the flexible glue disc 2, in the secondary process, the edge of the flexible glue disc 2 needs to be pressed, that is, the edge of the flexible glue disc 2 is tightly attached to the adsorbed surface by pressing the protrusion 13 on the elastic framework 1, so that the position where the annular bead 61 presses the platen 3 is not suitable to be located at the outer side of the position where the protrusion 13 is pressed by the platen 3, and the platen 3 is relatively flat when being pressed, so that the distance between the protrusion 13 and the center of the platen 13 is slightly offset outwards when the platen 3 is pressed, and therefore the projection of the annular bead 61 on the adsorbed surface should be located at the inner side of the projection 13 on the adsorbed surface. In addition, since the pressing protrusions 13 of the pressing plate 3 press the blades 11 of the elastic framework 1 away from each other, the pressing plate 3 cannot be directly pressed on the blades 11, and the soft rubber disc 2 coated on the elastic framework 1 cannot be pressed on the elastic framework 1, so that in order to avoid the annular pressing rib 61 pressing the pressing plate 3, the pressing plate 3 is in direct contact with the soft rubber disc 2 or the elastic framework 1, structural deformation of the bending rib 12 is affected, projection of the annular pressing rib 61 on the adsorbed surface should be located on the outer side of the projection of the bending rib 12 on the adsorbed surface, so that structural deformability of the bending rib 12 is guaranteed, and finally good adsorption effect is guaranteed. Therefore, as shown in fig. 11, the projection of the annular bead 61 on the adsorbed surface is located between the projection of the bent bead 12 and the projection 13 on the adsorbed surface.
Further, the external connection member 6 is formed into a housing with an opening facing the platen 3, when the suction cup is not attached to the attached surface, at least a part of the platen 3 or the flexible glue disc 2 is exposed from the housing, and when the suction cup is attached to the attached surface, the external connection member 6 is at least covered outside the platen 3, i.e. the platen 3 is no longer exposed from the housing of the external connection member 6, so that, when viewed from the outside, the external connection member 6 is exposed from the suction cup as few parts as possible, thereby improving the aesthetic property of the product. Therefore, the external connection member 6 needs to have a certain movement margin along the direction perpendicular to the adsorbed surface, and meanwhile, the external connection member 6 needs to be kept stable as much as possible, so that the external connection member 6 cannot shake randomly when being hung with an article, as shown in fig. 10 and 11, an elastic cantilever 62 extends out of the shell of the external connection member 6 towards one side of the pressure plate 3, so that one side of the external connection member 6 abuts against the cover 51, the other side of the external connection member abuts against the pressure plate 3 through the elastic cantilever 62, the external connection member 6 can displace relative to the pressure plate 3 through deformation of the elastic cantilever 62, and the position of the external connection member 6 perpendicular to the adsorbed surface is kept relatively fixed through elasticity of the elastic cantilever 62. Preferably, the elastic cantilevers 62 are provided in three, and are uniformly distributed along the circumference of the outer joint member 6 so that the outer joint member 6 does not deflect. The length direction of the projection of the elastic cantilever 62 on the adsorbed surface is preferably along the radial direction of the elastic framework 1, and the outer end of the elastic cantilever 62 is connected with the shell of the external connector 6, so that when the elastic cantilever 62 is pressed and deformed to a certain extent, the inner end of the elastic cantilever can be abutted against the connecting body 1 or the protruding part in the middle of the pressure plate 3, thereby limiting the movable range of the external connector 6.
In some embodiments, as shown in fig. 12 and 13, an adjusting member 7 is further provided to facilitate adjusting the suction force of the suction cup, where the adjusting member 7 is sleeved on the tubular body 52 of the pressing block 5 and is clamped on the cover 51 and the external member 6. The regulating element 7 is provided with a plurality of inclined planes 71 towards one side of the cover body 51, the inclined planes 71 are formed in an annular shape sleeved on the tubular body 52 in an end-to-end connection mode, the distances between different parts of the inclined planes 71 and the external connecting element 6 are different, the pressing blocks 5 are pressed at different positions on the inclined planes 71, the middle part of the elastic framework 1 is stretched to different degrees through the connecting body 4 connected with the pressing blocks 5, the middle part of the flexible glue disc 2 is pulled, and the size of a cavity between the sucking disc and the adsorbed surface is adjusted, so that the adsorption force of the sucking disc is adjusted. As shown in fig. 9, the slider 54 is disposed on the pressing block 5, the slider 54 abuts against the inclined surface 71 and can slide along the inclined surface 71, when the suction cup needs to be adsorbed on the adsorbed surface and the adsorption force is regulated, the soft rubber disc 2 is attached to the adsorbed surface, and the cover 51 is pressed, then the connecting body 1 is pressed by the tubular body 52, so as to press the middle part of the elastic framework 1, the middle part of the elastic framework 1 drives the soft rubber disc 2 to approach the adsorbed surface, at the moment, the cover 51 also presses the regulating element 7, and then presses the external element 6, so that the annular pressing rib 61 of the external element 6 presses the outer edge of the pressure disc 3, and then presses the bulge 13 on the elastic framework 1, finally, the outer edge of the soft rubber disc 2 is tightly attached to the adsorbed surface, therefore, a negative pressure cavity is formed between the soft rubber disc 2 and the adsorbed surface, and the suction disc is adsorbed on the adsorbed surface, in order to make the adsorption force stronger, at the moment, the bottom end 711 on the inclined surface 71 slides to the top, and thus the regulating element 7 drives the pressing block 5 to move away from the adsorbed surface to the outer edge of the adsorbed surface, and the negative pressure cavity 2 can be further increased, and the negative pressure cavity is further can be formed between the soft rubber disc 2 and the adsorbed surface.
Further, in order to prevent the sliding block 54 from sliding out of the inclined plane 71, a stop structure is further provided between the pressing block 5 and the adjusting key 7, specifically, as shown in fig. 9 and 12, an upper stop portion 72 is provided on a top end 712 of the inclined plane 71, a lower stop portion 73 is provided on a bottom end 711, and a stop block 55 is provided on the pressing block 5, when the adjusting member 7 rotates, the stop block 55 is limited between the upper stop portion 72 and the lower stop portion 73, that is, the stop block 55 can only move within a range between the upper stop portion 72 and the lower stop portion 73, and the stop block 55 is provided on the pressing block 5, so that a relative rotation range of the pressing block 5 and the adjusting member 7 can be limited. In order to simplify the structure of the product, the upper stop portion 72 is disposed at the top end 712 and is formed as a protruding portion of the top end 712 protruding from the top end 712, and the lower stop portion 73 is formed as a vertical surface of the top end 712 of the other inclined surface 71 adjacent to the bottom end 711 of any inclined surface 71, and at this time, the position of the stopper 55 in the radial direction of the cover 51 is the same as that of the slider 54 or both are integrally formed, so that the overall structure is simplified.
In some embodiments, along the direction that deviates from the adsorbed surface, the elastic framework 1, the pressure plate 3, the external connecting piece 6 and the pressure block 5 are sequentially arranged, the elastic framework 1 is fixed with one end of the connecting body 4, the pressure plate 3 and the external connecting piece 6 are sleeved on the connecting body 4, the pressure block 5 is connected with the other end of the connecting body 4, so that the pressure block 5 can compress the pressure plate 3 and the external connecting piece 6 on the elastic framework 1, and all the components are connected into a whole. The external connection member 6 has another function except for pressing the pressure plate 3, as shown in fig. 13, a hook can be arranged on the connection body 6 to mount the load, and in addition, a hanging seat can be arranged on the connection body 6 to form a hanging rack or a rack by using a plurality of sucking discs. Therefore, in order to improve the applicability of the sucker, both the hook and the hanging seat can be detachably connected with the connecting body 6, so that the sucker becomes a general platform for hanging or placing objects.