Ventilated fluid supply cupTechnical Field
The invention relates to fluid supply of paint spray guns, in particular to a ventilated fluid supply cup.
Background
When the spray gun is connected with the spray gun to spray paint outwards, the liquid in the cup body is continuously reduced, so that the external air pressure difference in the spray gun liquid reservoir is continuously increased, and the cup body is stressed and broken, so that paint in the cup body flows out. The prior spray gun liquid storage device balances the internal and external air pressure difference by arranging a vent hole on the bottom or the wall of the cup body, and the vent hole is detachably connected with the cover. When the cup body is inverted for paint spraying, the cover is opened so that the vent holes can be ventilated to continuously balance the air pressure difference.
The Chinese patent of the invention with the patent number 200480041717.5 and the name of the fluid reservoir for a paint spray gun discloses a structure for enabling a sealing element to move between a first valve position and a second valve position to open and close the bottom of the fluid reservoir, when the fluid reservoir is installed and used, the sealing element realizes the balance of the internal and external air pressure of the fluid reservoir at the second valve position, and when the fluid reservoir is used, the sealing element realizes the closing of a vent hole at the first valve position, that is, the sealing element is pulled up to realize the ventilation, and the sealing element is pushed down to realize the closing ventilation. However, due to the limitation of the size of the product, the height of the sealing element is not greatly changed in the process of pulling up and pressing down, and a user forgets to press down the sealing element easily in the use process, so that paint flows out of the vent hole when the fluid storage device is vertically placed, and material waste and environmental pollution are caused. And in order that the fluid reservoir can be normally placed, the height of the integral valve is lower than the height of the bottom edge of the fluid reservoir, and the sealing element is in the vertical up-and-down movement process, so that a user can hardly find leakage of paint immediately after the fluid reservoir is vertically placed, and when the user finds leakage, most of the paint and other fluids in the fluid reservoir are leaked.
Also, chinese patent No. 201380039900.0, entitled vent assembly and reservoir comprising the vent assembly, discloses a structure for implementing venting on and off to the bottom of a fluid reservoir by rotating a closing member, a closing member holder and a convex surface, such as rotating clockwise to close a vent hole and rotating counterclockwise to open the vent hole, wherein various elements are not changed in a manner to cause error in rotation direction during opening or closing, which results in that the vent hole is in an opened state when the fluid reservoir is vertically placed, paint flows out of the vent hole, causing material waste and environmental pollution, and a user is difficult to find leakage of paint immediately when the user finds leakage, and the fluid such as paint in the fluid reservoir has leaked mostly.
Accordingly, there is a need for further improvements and developments in the art.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a fluid supply cup that is capable of venting to achieve bottom venting of the fluid supply cup.
In order to solve the technical problems, the scheme of the invention comprises the following steps:
a ventable fluid supply cup having a container provided with a vent hole closed by means of a valve, wherein a valve housing is arranged around the periphery of the vent hole, the valve housing being provided with a closing element comprising a base which can be fitted to the valve housing, to which base a blocking part is connected, the dowel of which blocking part is used for closing or opening the vent hole.
The fluid supply cup is characterized in that the valve shell is formed by a hollow cylindrical protrusion, the protrusion is arranged on the wall of the bottom of the container, and two side edges of the protrusion extend to the corresponding positions of the vent holes in an arc shape to form a guide channel; the inner wall of the protrusion is provided with a locking groove, the outer wall of the base is provided with a locking buckle, and the locking buckle is matched with the locking groove.
The fluid supply cup, wherein, one end of the blocking part is hinged at one side of the base through a connecting piece; the tenon pin is arranged at the corresponding position of the blocking part and the vent hole, and a plug for closing the vent hole is formed at the end part of the tenon pin; the blocking part is in a state of closing the vent hole, and the plug closes the vent hole.
The fluid supply cup is characterized in that grooves are respectively arranged on the side walls of the two sides of the guide channel, ribs are respectively arranged on the two sides of the blocking part, the ribs are matched with the grooves, the blocking part is in a closed vent state, and the ribs are clamped into the corresponding grooves.
The fluid supply cup is characterized in that the connecting piece is an elastic sheet body, and the upper surface of the joint of the blocking part and the elastic sheet body is higher than the upper surface of the elastic sheet body; the blocking part is in a vent hole opening state, and the included angle between the plane of the blocking part and the plane of the upper surface of the base is smaller than 90 degrees by the rebound of the elastic sheet body and the cooperation of the connecting part of the elastic sheet body.
The fluid supply cup is characterized in that a passage formed by a protrusion is arranged at the vent hole, the inner wall of the passage is matched with the outer contour of the dowel, the blocking part is in a state of closing the vent hole, and the dowel is inserted into the passage.
The fluid supply cup is characterized in that an arc-shaped convex rib is arranged on the outer wall of the passage, an arc-shaped claw is arranged at the front end of the blocking part, and the arc-shaped claw is matched with the arc-shaped convex rib; the blocking part is in a state of closing the vent hole, and the arc claw clamps the arc convex edge.
The fluid supply cup is characterized in that the base and the blocking part are integrally formed.
The fluid supply cup is characterized in that the blocking part is in a vent hole opening state, and the free end of the blocking part is exposed out of the plane of the edge of the bottom of the fluid supply cup; the blocking part is in a state of closing the vent hole, and the corresponding surface of the blocking part is not higher than the plane of the edge of the bottom of the fluid supply cup.
The fluid supply cup is characterized in that the outer contours of the guide channel and the sealing element are cashew-shaped.
According to the ventilated fluid supply cup provided by the invention, when the blocking part is in the open state, the free end of the blocking part can be exposed out of the plane where the edge of the bottom of the fluid supply cup is located, that is, the free end of the blocking part is always higher than the plane of the bottom of the fluid supply cup, at least a lifting mode is adopted, the free end of the blocking part is in the open state, and a user can obviously observe that the free end of the blocking part is in the tilting state, so that misoperation is avoided; if the blocking part does not close the vent hole, when a user vertically places the fluid reservoir, the bottom plane of the fluid reservoir is uneven, the user can immediately find a leakage problem, and the blocking part is used for closing the vent hole in time, so that the aim of preventing or reducing misoperation of the user is fulfilled; when the obvious blocking part closes the vent hole, the blocking part is in a flat state, the two states are very different, a user can more obviously perform corresponding operation, and even a striking mark can be arranged at the corresponding position of the free end of the blocking part.
Drawings
FIG. 1 is a schematic view of a fluid supply cup of the present invention with a vent hole in a closed position;
FIG. 2 is a schematic cross-sectional view of the fluid supply cup of the present invention with the vent hole closed;
FIG. 3 is a schematic side view of the vent hole of the fluid supply cup of the present invention in an open state;
FIG. 4 is a schematic view of a vent and a valve housing according to the present invention;
FIG. 5 is a schematic view of one embodiment of a closure element of the present invention;
FIG. 6 is a schematic view of one embodiment of a vent and valve housing of the present invention;
FIG. 7 is a schematic view of another embodiment of a closure element of the present invention;
FIG. 8 is a schematic view of another embodiment of the vent and valve housing of the present invention.
Detailed Description
The invention provides a ventilated fluid supply cup, which is further described in detail below for the purpose, technical scheme and effect of the invention to be more clear and definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention provides a ventable fluid supply cup having a container, as shown in figures 1, 2 and 4, with a container 1 and a lid (not shown) adapted to the container 1, the lid having a connection for connecting the fluid supply cup to an adapter or paint gun, the lid being connectable by means of threads 2 on the container 1. The container 1 is provided with a vent hole 3 closed by means of a valve, which further comprises a valve housing 4 arranged around the periphery of the vent hole 3, which valve housing 4 is provided with a closing element 5, which closing element 5 comprises a base 6 which can be adapted to the valve housing 4, as shown in fig. 5 and 7, which base 6 is connected with a plug 7, the dowel 8 of which plug 7 is intended to close or open the vent hole 3.
Further, the valve housing 4 is formed by a hollow cylindrical protrusion, as shown in fig. 4 and 3, which is disposed on a wall of the bottom of the container 1, and two sides of the protrusion extend to a position corresponding to the vent hole 3 in an arc shape, so as to form a guide channel 9, wherein the arc shape of the guide channel 9 is adapted to the arc shape of the bottom circumference of the container 1; the inner wall of the protrusion is provided with a locking groove 10, the outer wall of the base 6 is provided with a locking buckle 11, and the locking buckle 11 is matched with the locking groove 10.
In another preferred embodiment of the present invention, as shown in fig. 5 and 7, one end of the blocking portion 7 is hinged to one side of the base 6 through a connecting member 17; the dowel 8 is arranged at the corresponding position of the blocking part 7 and the vent hole 3, so that the dowel 8 can be more smoothly inserted into the vent hole 3, and a plug for closing the vent hole is formed at the end part of the dowel 8; the blocking portion 7 is in a state of closing the vent hole 3, and the plug closes the vent hole 3.
Further, as shown in fig. 6, the side walls on both sides of the guide channel 9 are respectively provided with a groove 12, as shown in fig. 5, both sides of the blocking portion 7 are respectively provided with a rib 13, the rib 13 is matched with the groove 12, the blocking portion is in a state of closing the vent hole, and the rib 13 is blocked into the corresponding groove 12. So that the blocking part 7 is not easy to be opened when being in a state of closing the vent hole 3, thereby ensuring the stability of closing the vent hole 3. The locking structure of the invention can be realized in other ways, for example, the diameter of the dowel pin 8 is slightly smaller than that of the plug, the vent hole is clamped by the expansion force of the plug, and the locking function between the dowel pin 8 and the blocking part 7 and the base 6 can be realized. Of course, other ways of implementing the specific locking mechanism are also possible and will not be described in detail herein.
The connecting piece 17 is an elastic sheet, specifically, the base 6, the connecting piece 17 and the blocking portion 7 are integrally injection-molded, as shown in fig. 5 and 7, the upper surface of the connecting portion between the blocking portion 7 and the elastic sheet is higher than the upper surface of the elastic sheet, that is, a step is formed, so that when the blocking portion 7 is opened, the opening width of the blocking portion 7 can be limited by the step. The blocking part 7 is in a state of opening the vent hole 3, and the rebound of the elastic sheet body is matched with the joint of the elastic sheet body, so that the included angle between the plane of the blocking part 7 and the plane of the upper surface of the base 6 is smaller than 90 degrees, and meanwhile, the blocking part 7 is in a tilted state, so that a striking effect is achieved.
In another preferred embodiment, as shown in fig. 7 and 8, the vent hole 3 is provided with a passage 14 formed by a protrusion, the inner wall of the passage 14 is matched with the outer contour of the dowel 8, the blocking part 7 is in a state of closing the vent hole, and the dowel 8 is inserted into the passage 14. The outer wall of the passage 14 is provided with an arc-shaped convex rib 15, the front end of the blocking part 7 is provided with an arc-shaped claw 16, and the arc-shaped claw 16 is matched with the arc-shaped convex rib 15; the blocking part 7 is in a state of closing the vent hole 3, namely, the blocking part 7 is covered on the passage 14, and the arc-shaped claw 16 clamps the arc-shaped convex rib 15, so that the blocking part 7 is not easy to open when being in a state of closing the vent hole 3, and the stability of closing the vent hole 3 is further ensured.
In particular, the blocking portion 7 is in a state of opening the vent hole 3, and the free end of the blocking portion 7 is exposed out of the plane of the edge of the bottom of the fluid supply cup; the blocking part 7 is in a state of closing the vent hole 3, and the corresponding surface of the blocking part 7 is not higher than the plane of the edge of the bottom of the fluid supply cup. The blocking part 7 is in an open state, the free end of the blocking part 7 always protrudes out of the plane where the edge of the bottom of the fluid supply cup is located, a user can clearly judge that the vent hole 3 is in an open state, after the fluid supply cup is used, the blocking part 7 is pressed down to seal the vent hole 3, the corresponding surface of the blocking part 7 and the plane where the edge of the bottom of the fluid supply cup are located on the same plane, liquid is prevented from flowing out of the vent hole 3, and even if the user forgets to close the blocking part 7, the user can quickly find out and quickly seal the vent hole 3 due to uneven bottom. That is, the vent hole 3 is in the closed state, and the corresponding surface of the blocking portion 7 is in the same plane as the plane in which the edge is located; when the user forgets to close, the user has obvious uneven feeling, and the user can quickly press the container 1, so that the dowel 8 is ensured to be quickly inserted along the channel 14, and the plug is enabled to seal the vent hole 3.
In order to make the ventilation mode match with the bottom of the fluid supply cup more flow, the outer contour of the guide channel 9 and the closing element 5 is shaped like a cashew, that is, the guide channel matches with the outer contour of the edge of the bottom of the fluid supply cup, so that the operator can conveniently open or close the blocking part 7.
And the annular groove is formed in the joint of the blocking part 7 and the dowel 8, so that the phenomenon that the whole surface is polluted by paint stained at the top end of the blocking part when the blocking part is opened is avoided.
It should be understood that the above description is not intended to limit the invention to the particular embodiments disclosed, but to limit the invention to the particular embodiments disclosed, and that the invention is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the invention.