CN114583521A - Drum spring type connector assembling device - Google Patents

Abstract

The invention relates to the technical field of connectors, in particular to a drum spring type connector assembling device. The invention provides a drum spring type connector assembling device, which is used for assembling a drum spring and a needle shaft, and comprises a guide pushing piece and a pushing cylinder, wherein the guide pushing piece comprises a front end and a rear end, the area of the cross section of the front end is gradually increased along the length direction of the front end, and the drum spring is provided with a first position sleeved on the front end and a second position sleeved on the needle shaft; the pushing cylinder is used for pushing the drum spring from the first position to the second position. According to the technical scheme, the conical guide pushing piece and the pushing cylinder are introduced, so that the purpose of quickly assembling the drum spring and the needle shaft is achieved.

Description

Drum spring type connector assembling device

Technical Field

The invention relates to the technical field of connectors, in particular to a drum spring type connector assembling device.

Background

With the upgrading of consumer electronics, the connector industry is also in need of continuous innovation to meet customers facing high standards, demanding product markets.

Among the existing connector technologies, there is a drum spring type connector which requires side contact, which also greatly increases the difficulty of assembling the product. At present, no good solution is available in the industry, and the assembly is performed by adopting a hand-pressing assembly mode most frequently. The manual operation mode can only finish the preparation of samples in extremely small batches, and the working efficiency is low; in addition, the assembly is directly operated by hands, so that the risk of injuring fingers exists, and the product is easily damaged in the assembly process.

Disclosure of Invention

The invention mainly aims to provide a drum spring type connector assembling device, aiming at improving the assembling efficiency of a drum spring and a needle shaft.

In order to achieve the above object, the present invention provides a drum spring type connector assembling apparatus for assembling a drum spring with a needle shaft, the apparatus comprising:

the drum spring is provided with a first position sleeved on the front end and a second position sleeved on the needle shaft;

and the pushing cylinder is used for pushing the drum spring from the first position to the second position.

In an embodiment, a receiving groove is formed in a recessed manner at an end portion of the front end away from the rear end, and the receiving groove is used for receiving the head portion of the needle shaft.

In an embodiment, the pushing cylinder has a plurality of pushing cylinders, the inner diameters of the pushing cylinders are different, and the pushing cylinders are used for sequentially pushing the drum spring towards the needle shaft according to the inner diameters from small to large.

In an embodiment, the pushing cylinder includes a first pushing cylinder, a second pushing cylinder and a third pushing cylinder, and the inner diameters of the first pushing cylinder, the second pushing cylinder and the third pushing cylinder are sequentially increased.

In one embodiment, the front end is tapered, an angle between a generatrix of the front end and a central axis of the front end is α, and α is not greater than 5 °.

In an embodiment, a is not less than 3 °.

In one embodiment, the outer wall of the pushing cylinder is convexly provided with a pushing table.

In an embodiment, the axial length of the rear end is not less than 5 mm.

In an embodiment, the jig assembly is further included, the jig assembly is used for fixing the needle shaft, the drum spring, the guiding and pushing member and the pushing cylinder, and the jig assembly is further used for pushing the pushing cylinder to enable the drum spring to move towards the needle shaft.

In one embodiment, the jig assembly has a plurality of assembly positions, and one assembly position can assemble one needle shaft and one drum spring.

According to the technical scheme, the conical guide pushing piece and the pushing cylinder are introduced, so that the purpose of quickly assembling the drum spring and the needle shaft is achieved. The head of the needle shaft is convexly provided with a stop table, the outer diameter of the stop table is larger than the inner diameter of the drum spring when the drum spring is not expanded, the drum spring firstly passes through the stop table of the needle shaft and then reaches the installation position of the needle shaft during installation, in the process, the drum spring needs to be stressed and expanded to the inner diameter not smaller than the outer diameter of the stop table of the needle shaft, and the expansion difficulty of the drum spring is reduced due to the introduction of the guide and push part. The inner diameter of the drum spring when the drum spring is not expanded is larger than the minimum outer diameter of the push guide part, and the drum spring can be easily sleeved on the outer wall of one end of the push guide part; under the action of the pushing cylinder, the drum spring moves towards the needle shaft along the outer wall of the pushing guide part, in the process, only force towards the needle shaft direction needs to be applied to the pushing cylinder, and the drum spring does not need to be manually broken, so that the risk of finger injury in the assembling process is reduced; in addition, the conical design of the guide and push piece enables the inner diameter of the drum spring to be slowly increased to be equal to the outer diameter of the stop table of the needle shaft, the force required by expansion of the drum spring is equally divided into multiple parts in the process, the expansion difficulty of the drum spring is reduced, and the assembly efficiency of the drum spring and the needle shaft is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a disassembled structure of a needle shaft and a drum spring;

FIG. 2 is a schematic view of an assembly structure of the needle shaft and the drum spring;

FIG. 3 is a schematic structural view of a guiding and pushing member according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a pushing cylinder according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a structure before pushing in an embodiment of the present invention;

FIG. 6 is a schematic structural view of the drum spring of FIG. 5 after being pushed by the first pushing cylinder;

FIG. 7 is a sectional view taken along line A-A of FIG. 6;

FIG. 8 is a schematic structural view of the drum spring of FIG. 6 after being continuously pushed by the second pushing cylinder;

FIG. 9 is a sectional view taken along line B-B of FIG. 8;

FIG. 10 is a schematic view of the drum spring of FIG. 8 after being pushed by the third pushing cylinder;

FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;

FIG. 12 is a schematic view of an assembly structure of a jig assembly according to an embodiment of the present invention;

fig. 13 is an exploded view of the jig assembly of fig. 12.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Needle shaft	11	Head part
111	Stop table	13	Assemblingposition
				15	Tail part	20	Drum spring
30	Guiding and pushingpiece	31	Front end
				311	Containinggroove	33	Back end
40	Push cylinder	40a	Containing cavity
				40b	Pushing platform		41		First pushingcylinder
411	First accommodatingcavity	43	Second pushing cylinder
				431	Second containing cavity	45	Third pushing cylinder
451	Third accommodatingcavity	50	Jig assembly
				51	First fixing plate	511	First fixing hole
53	Second fixing plate	531	Second fixing hole
				55	Pressing plate	551	Groove

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The embodiment of the invention provides a drum spring connector assembling device which is used for assembling adrum spring 20 and aneedle shaft 10.

Referring to fig. 1, fig. 2 and fig. 5, in an embodiment of the present invention, the drum spring type connector assembling apparatus includes a guiding and pushingmember 30 and a pushingcylinder 40. The guiding and pushingmember 30 comprises afront end 31 and arear end 33, the cross section of thefront end 31 gradually increases in area along the length direction thereof to form a cone shape, and thedrum spring 20 has a first position sleeved on thefront end 31 and a second position sleeved on theneedle shaft 10; the minimum outer diameter of thefront end 31 is not smaller than the outer diameter of therear end 33, and the maximum outer diameter of therear end 33 is not larger than the inner diameter of thedrum spring 20; the end of thefront end 31 away from therear end 33 is recessed to form areceiving slot 311, and thereceiving slot 311 is used for receiving thehead 11 of theneedle shaft 10. The pushingcylinder 40 is used for pushing thedrum spring 20 from the first position to the second position, the pushingcylinder 40 has anaccommodating cavity 40a, when the pushingcylinder 40 pushes thedrum spring 20, the guiding and pushingmember 30 is at least partially located in theaccommodating cavity 40a, and an end surface of the pushingcylinder 40 abuts against an end surface of thedrum spring 20.

Referring to fig. 3, thefront end 31 is partially tapered or entirely tapered. When thefront end 31 is tapered as a whole, thefront end 31 may be circular truncated cone-shaped or truncated pyramid-shaped. When thefront end 31 is in a frustum pyramid shape, thefront end 31 can be a frustum pyramid, a frustum pentagon, a frustum hexagon or other frustum pyramids, and the more the edges of the frustum pyramid are, the closer the shape of thefront end 31 is to a circular truncated cone; the truncated cone-shaped tip 31 facilitates the assembly of thedrum spring 20 and theneedle shaft 10, relative to the truncated-pyramid-shaped tip 31; thedrum spring 20 is sleeved on the outer wall of thepush guide 30, and when thedrum spring 20 is pushed by thepush cylinder 40, the peripheral wall of the truncated cone-shapedfront end 31 exerts an acting force on the periphery of thedrum spring 20, and all parts of the inner wall of thedrum spring 20 are stressed in a balanced manner, so that the phenomenon that thedrum spring 20 is damaged due to uneven stress is avoided.

When thefront end 31 is partially tapered, in a direction away from therear end 33, the outer diameter of thefront end 31 gradually increases to a certain extent and then does not change, that is, thefront end 31 is composed of a tapered body and a cylindrical body, a portion of thefront end 31 close to therear end 33 is the tapered body, and a portion of thefront end 31 away from therear end 33 is the cylindrical body; for example, a cone or pyramid, and a cylinder or prism. Preferably, thefront end 31 is composed of a cone and a cylinder, and the maximum outer diameter of the conical part of thefront end 31 is consistent with the outer diameter of the cylindrical part of thefront end 31, namely, the difference between the outer diameters is less than 0.0001 mm; the cylindrical portion of thefront end 31 is recessed from an end of the tapered portion of thefront end 31 to form thereceiving groove 311, thereceiving groove 311 is a hemispherical groove, and the size of the receivinggroove 311 can completely receive thehead 11 of theneedle shaft 10.

Therear end 33 is cylindrical, conical or a combination of the two, when therear end 33 is conical, the outer diameter of therear end 33 gradually decreases in a direction away from thefront end 31, the maximum outer diameter of therear end 33 of the guiding and pushingmember 30 is smaller than or equal to the inner diameter of thedrum spring 20, preferably, the maximum outer diameter of therear end 33 is smaller than the inner diameter of thedrum spring 20, and therear end 33 is truncated cone-shaped, truncated pyramid-shaped, conical or pyramid-shaped; when therear end 33 has a cylindrical shape, the outer diameter of therear end 33 is smaller than or equal to the inner diameter of thedrum spring 20, and preferably, the smaller the outer diameter of therear end 33 is, the closer the outer diameter of therear end 33 is to the inner diameter of the end wall of thedrum spring 20, the better the guiding effect of therear end 33 on thedrum spring 20 is, but the more easily the two generate relative friction force to hinder thedrum spring 20 from moving toward theneedle shaft 10, and the more easily thedrum spring 20 and the guide andpush member 30 are worn. When therear end 33 is a combination of a cylindrical shape and a conical shape, a portion of therear end 33 close to thefront end 31 is cylindrical, a portion of therear end 33 far from thefront end 31 is conical, and a conical tip is far from a cylindrical portion of therear end 33. The latter has better guiding function relative to the former two; firstly, the conical portion of therear end 33 facilitates the sleeving of thedrum spring 20 on the outer wall of the guiding and pushingmember 30, and secondly, the cylindrical portion of therear end 33 can play a role in positioning thedrum spring 20 so as to enable thedrum spring 20 to move axially along the guiding and pushingmember 30.

When the drum spring type connector assembling device is used for assembling thedrum spring 20 and theneedle shaft 10, thedrum spring 20 and the guiding and pushingpart 30 are assembled together, so that thedrum spring 20 is sleeved on the outer wall of the guiding and pushingpart 30; then, the guiding and pushingpart 30 with thedrum spring 20 is assembled with theneedle shaft 10, and thehead 11 of theneedle shaft 10 is placed in theaccommodating groove 311; and finally, thedrum spring 20 sleeved on the outer wall of the guiding and pushingpart 30 is pushed and pushed through the pushing and pushingcylinder 40, and the end surface of the pushing and pushingcylinder 40 is abutted with the end surface of thedrum spring 20 far away from theneedle shaft 10.

Referring to fig. 4, the pushingcylinder 40 is a cylinder, and the pushingcylinder 40 may be a cylinder, a prism, or other irregular multi-surface cylinder. Theaccommodating cavity 40a of the pushingcylinder 40 is cylindrical, conical or other irregular shapes. The length of the pushingcylinder 40 is not required, the length of the pushingcylinder 40 may be not less than the length of the pushingguide 30 and may also be less than the length of the pushingguide 30, generally, the length of the pushingcylinder 40 is set to be greater than or equal to the length of the pushingguide 30, so as to facilitate the pushing of thedrum spring 20 by the pushingcylinder 40.

Thedrum spring 20 type connector assembling apparatus can rapidly assemble thedrum spring 20 with theneedle shaft 10. Thehead 11 of theneedle shaft 10 is convexly provided with a stop table 111, the outer diameter of the stop table 111 is larger than the inner diameter of thedrum spring 20 when thedrum spring 20 is not expanded, during installation, thedrum spring 20 firstly passes through the stop table 111 of theneedle shaft 10 and then reaches the installation position of theneedle shaft 10, in the process, thedrum spring 20 needs to be stressed and expanded to the inner diameter not smaller than the outer diameter of the stop table 111 of theneedle shaft 10, and the introduction of the guide and pushpart 30 reduces the expansion difficulty of thedrum spring 20. Because one end of the guiding and pushing member 30 is sleeved on the head 11 of the needle shaft 10, the maximum outer diameter of the guiding and pushing member 30 is larger than the outer diameter of the stop table 111 of the needle shaft 10, the inner diameter of the drum spring 20 when the drum spring is not expanded is larger than the minimum outer diameter of the guiding and pushing member 30, and the drum spring 20 can be easily sleeved on the outer wall of one end of the guiding and pushing member 30; under the action of the pushing cylinder 40, the drum spring 20 moves towards the needle shaft 10 along the outer wall of the pushing guide 30, in the process, only a force towards the needle shaft 10 needs to be applied to the pushing cylinder 40, and the drum spring 20 does not need to be manually broken, so that the risk of finger injury in the assembling process is reduced; in addition, the tapered design of the guiding and pushing member 30 gradually increases the inner diameter of the drum spring 20 to be not smaller than the outer diameter of the stop table 111 of the needle shaft 10, and the force required by the expansion of the drum spring 20 is equally divided into a plurality of parts in the process, so that the difficulty of the expansion of the drum spring 20 is reduced, and the assembly efficiency of the drum spring 20 and the needle shaft 10 is further improved.

Referring to fig. 3, in an embodiment, the maximum outer diameter of thefront end 31 is 2.25 to 2.45mm, an included angle between a generatrix or a side edge of thefront end 31 and a central axis thereof is α, where α is 3 to 5 °, within the range, thedrum spring 20 can be pushed to move toward theneedle shaft 10 with a small force, and the length of the guide and pushmember 30 is suitable, which facilitates to accelerate the assembly speed and save the space required for the assembly. When α is greater than 5 °, the taper of thefront end 31 is relatively large, and the larger the taper is, the larger the thrust for pushing thedrum spring 20 to move toward theneedle shaft 10 is, the more energy is consumed; when α is smaller than 3 °, the taper of thefront end 31 is smaller, the smaller the taper is, the longer the length of the guide and pushmember 30 is, and the larger the space occupied by thedrum spring 20 and theneedle shaft 10 when assembled is; setting the range of the angle alpha to be 3-5 degrees, the thrust and the length of the guide and pushmember 30 can be balanced, and then thedrum spring 20 and theneedle shaft 10 can be quickly assembled.

Referring to fig. 6, 8 and 10, in another embodiment, the pushingcylinder 40 has a plurality of pushingcylinders 40, the inner diameters of the pushingcylinders 40 are different, the pushingcylinders 40 sequentially push thedrum spring 20 toward theneedle shaft 10 according to the inner diameters from small to large, and different pushingcylinders 40 can push thedrum spring 20 to different depths. Generally, the end wall of the drum spring 20 is designed to be thin, the length of the drum spring 20 is 5mm to 7mm, the thickness of the end wall of the drum spring 20 is 0.14mm to 0.16mm, the inner diameter and the outer diameter of the end wall of the drum spring 20 when not expanded are 1.8 mm to 2.0mm and 2.1 mm to 2.3mm, and the outer diameter of the stop 111 of the head 11 of the needle shaft 10 is 2.25 mm to 2.45mm, at this time, a push cylinder 40 may not successfully push the drum spring 20 to the assembly position 13 of the outer wall of the needle shaft 10, if a push cylinder 40 is used for pushing, the inner diameter of the push cylinder 40 should not be smaller than the outer diameter of the stop 111 of the head 11 of the needle shaft 10, because the front end 31 is tapered, the inner diameter of the push cylinder 40 should not be smaller than the maximum outer diameter of the rear end 33, that is, the inner diameter of the push cylinder 40 may cause the push cylinder 40 to be unable to push the end 30 of the push piece, the inner diameter of the pushing cylinder 40 is too large, so that the end surface of the pushing cylinder 40 cannot abut against the end surface of the drum spring 20 and cannot push the drum spring 20. The plurality of pushingcylinders 40 are used for pushing thedrum spring 20 in a relay manner, so that thedrum spring 20 moves towards theneedle shaft 10 and is finally sleeved in the assemblingposition 13 of the outer wall of theneedle shaft 10.

Referring to fig. 7, 9 and 11, in another embodiment based on the above embodiment, the length of the guiding and pushingmember 30 is 10.7mm to 15mm, the length of thefront end 31 is 5.7 mm to 8mm, and the length of the tapered portion of thefront end 31 is 4.3 mm to 4.6 mm; the length ofrear end 33 is 5 ~ 7 mm. In addition, the pushingcylinder 40 includes a first pushing cylinder 4140, a second pushing cylinder 4340 and a third pushingcylinder 45, the first pushingcylinder 41 and the second pushingcylinder 43 are all cylindrical cylinders, the outer diameters of the first pushingcylinder 41 and the second pushingcylinder 43 are not less than 2.9mm, the inner diameter of the second pushingcylinder 43 is greater than the inner diameter of the first pushingcylinder 41, and the inner diameter of the third pushingcylinder 45 is greater than the inner diameter of the second pushingcylinder 43. The length of the first pushingcylinder 41 is 12.1-12.2 mm, the first pushingcylinder 41 is provided with a firstaccommodating cavity 411, the firstaccommodating cavity 411 is cylindrical, and the diameter of the firstaccommodating cavity 411 is 1.91-1.89 mm; the length of the second pushingcylinder 43 is 14-14.2 mm, the second pushingcylinder 43 is provided with a second accommodating cavity 431, the second accommodating cavity 431 is cylindrical, and the diameter of the second accommodating cavity 431 is 2.19-2.21 mm; the length of the third pushingcylinder 45 is 17-17.5 mm, the third pushingcylinder 45 is provided with a third accommodating cavity 451, the shape of the third accommodating cavity 451 is similar to that of the outer wall of the guiding and pushingpart 30, the third accommodating cavity 451 is composed of a cylinder and a cone, the maximum distance between the third accommodating cavities 451 is 2.25-2.45 mm, the cone structure of the third accommodating cavity 451 plays a role in positioning, and when the third pushingcylinder 45 pushes thedrum spring 20 to the assemblingposition 13 of the outer wall of theneedle shaft 10, the cone structure of theaccommodating cavity 40a prevents the third pushingcylinder 45 from continuously pushing thedrum spring 20.

When the drum spring 20 and the needle shaft 10 are assembled by using the drum spring 20 type connector assembling device, the drum spring 20 and the guiding and pushing member 30 are assembled together, so that the drum spring 20 is sleeved on the outer wall of the guiding and pushing member 30, and at this time, the drum spring 20 cannot move towards the needle shaft 10 without the action of external force; then the guiding and pushing piece 30 with the drum spring 20 is assembled with the needle shaft 10, and the head 11 of the needle shaft 10 is placed in the containing groove 311; when the drum spring 20 is pushed to move towards the needle shaft 10, the drum spring 20 is pushed by the first pushing cylinder 41, the end surface of the first pushing cylinder 41 abuts against the end surface of the drum spring 20, the first pushing cylinder 41 can push the drum spring 20 downward by 5.85-6.05 mm, when the first pushing cylinder 41 continues to push the drum spring 20 downward, the second pushing cylinder 43 is used to push the drum spring 20 downward, the second pushing cylinder 43 can push the drum spring 20 downward by 1.8-2.0 mm, when the second pushing cylinder 43 cannot push the drum spring 20 to move downwards continuously, the third pushing cylinder 45 is used to push the drum spring 20 to move downwards continuously, the third pushing cylinder 45 can push the drum spring 20 downward by 1.75-1.95 mm, the third pushing cylinder 45 just pushes the drum spring 20 to the assembling position 13 of the outer wall of the needle shaft 10. Thedrum spring 20 and theneedle shaft 10 are assembled successfully and quickly by the relay pushing of the first pushingcylinder 41, the second pushingcylinder 43 and the third pushingcylinder 45.

The first pushingcylinder 41, the second pushingcylinder 43 and the third pushingcylinder 45 are consistent in outer diameter, the difference of the outer diameters of the first pushing cylinder, the second pushing cylinder and the third pushing cylinder is smaller than 0.0001mm, the consistent outer diameter is beneficial to assembly process, and the assembly efficiency can be greatly improved. The outer diameters of the first pushingcylinder 41, the second pushingcylinder 43 and the third pushingcylinder 45 are 2.8-3.2 mm; if the outer diameter of the first abutting-pushingcylinder 41, the second abutting-pushingcylinder 43, or the third abutting-pushingcylinder 45 is too small, when thedrum spring 20 is abutted, the contact area of the first abutting-pushingcylinder 41, the second abutting-pushingcylinder 43, or the third abutting-pushingcylinder 45 is too small, and thedrum spring 20 is easily damaged due to uneven stress because the end wall of thedrum spring 20 is thin; if the outer diameter of the first pushingcylinder 41, the second pushingcylinder 43 or the third pushingcylinder 45 is too large, the waste of the material and the waste of the space are easily caused.

Further, the outer walls of the first pushingcylinder 41, the second pushingcylinder 43 and the third pushingcylinder 45 are all convexly provided with annular pushing tables 40b, and the outer diameter of each pushing table 40b is 3.9-4.5 mm. The firstabutting cylinder 41, the secondabutting cylinder 43 or the thirdabutting cylinder 45 is pushed to move toward theneedle shaft 10 by applying a force to the abutting table 40b, and thedrum spring 20 is pushed to move toward theneedle shaft 10. The design of the pushing table 40b facilitates pushing the first pushingcylinder 41, the second pushingcylinder 43 or the third pushingcylinder 45.

Referring to fig. 12, in an embodiment, thedrum spring 20 type connector assembling apparatus further includes ajig assembly 50, thejig assembly 50 includes afirst fixing plate 51, asecond fixing plate 53 and apressing plate 55, thefirst fixing plate 51 is provided with a plurality of first fixingholes 511 for fixing thetail portion 15 of thepin shaft 10, thesecond fixing plate 53 is provided with a plurality of second fixing holes 531, the second fixing holes 531 are through holes, the pushingcylinder 40 is inserted into the second fixing holes 531, thepressing plate 55 is concavely provided with a plurality ofgrooves 551, thegrooves 551 are used for accommodating thefront end 31, and the number of the first fixingholes 511, the second fixing holes 531 and thegrooves 551 is equal and the position thereof is corresponding.

When thedrum spring 20 and theneedle shaft 10 are assembled by using thedrum spring 20 type connector assembling apparatus, thetail portion 15 of theneedle shaft 10 is fixed in thefirst fixing hole 511, therear end 33 passes through thesecond fixing hole 531, thefront end 31 is fixed in thegroove 551 of thepressing plate 55, the abutting table 40b is located between thesecond fixing plate 53 and thepressing plate 55, thefirst fixing plate 51 and thesecond fixing plate 53 are fixed, thedrum spring 20 and the guiding and pushingmember 30 are assembled, thefront end 31 is fixed in theaccommodating cavity 40a of the abuttingcylinder 40, and therear end 33 is fixed with thehead portion 11 of theneedle shaft 10. Moving thepressing plate 55 downward, thepressing plate 55 pushes the pushingcylinder 40 downward to push thedrum spring 20, and thedrum spring 20 moves toward theneedle shaft 10.

Referring to fig. 13, thefirst fixing plate 51, thesecond fixing plate 53 and thepressing plate 55 are all rectangular flat plates, the length of each flat plate is 144mm, the width of each flat plate is 125mm, and the hole site number or slot position number of thefirst fixing plate 51, thesecond fixing plate 53 and thepressing plate 55 is 25 pcs. Thejig assembly 50 has a plurality of assembly positions, one assembly position is composed of onefirst fixing hole 511, onesecond fixing hole 531 and onegroove 551, one set ofjig assembly 50 can simultaneously assemble a plurality of drum springs 20 and a plurality ofneedle shafts 10, one assembly position can assemble onedrum spring 20 and oneneedle shaft 10, and the multi-assembly position design of thejig assembly 50 greatly improves the assembly efficiency of the drum springs 20 and theneedle shafts 10.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A drum spring type connector assembling apparatus for assembling a drum spring with a needle shaft, comprising:

the drum spring is provided with a first position sleeved on the front end and a second position sleeved on the needle shaft;

and the pushing cylinder is used for pushing the drum spring from the first position to the second position.

2. The drum spring assembly of claim 1, wherein the end of the front end remote from the rear end is recessed to form a receiving slot for receiving the head of the needle shaft.

3. The drum spring type connector assembling device according to claim 1, wherein the pushing cylinder has a plurality of pushing cylinders, the inner diameters of the plurality of pushing cylinders are different, and the plurality of pushing cylinders are sequentially used for pushing the drum spring toward the needle shaft from small to large according to the inner diameters.

4. The drum spring type connector assembling device according to claim 3, wherein said pushing cylinder comprises a first pushing cylinder, a second pushing cylinder and a third pushing cylinder, and the inner diameters of said first pushing cylinder, said second pushing cylinder and said third pushing cylinder are sequentially increased.

5. The drum spring connector assembly device of claim 1, wherein the front end is tapered, an angle between a busbar of the front end and a central axis of the front end is α, and α is not greater than 5 °.

6. The drum spring connector assembly device of claim 5, wherein A is not less than 3 °.

7. The drum spring type connector assembling apparatus according to claim 1, wherein an abutting table is protruded from an outer wall of said abutting cylinder.

8. The drum spring connector assembly device according to claim 1, wherein the axial length of the rear end is not less than 5 mm.

9. The device for assembling a drum spring type connector according to any one of claims 1 to 9, further comprising a jig component for fixing the needle shaft, the drum spring, the guiding and pushing member and the pushing cylinder, the jig component further pushing the pushing cylinder to move the drum spring toward the needle shaft.

10. The drum spring type connector assembling apparatus according to claim 9, wherein said jig assembly has a plurality of assembling positions, one assembling position being capable of assembling one needle shaft and one drum spring.

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