Automobile tail door electric supporting rod anti-rotation connecting riveting equipment

Abstract

The application relates to a kind of automobile tail door electric supporting rod anti-rotation connecting riveting equipment, belong to the field of automobile parts manufacturing, it includes frame, the frame is equipped with buckling station, ball socket assembly is located on buckling station, the section of inner support pipe is circular, the ball socket assembly includes ball socket seat and joint shaft fixedly connected with each other, the ball socket seat is located at one end of joint shaft, the inner support pipe is sleeved on joint shaft, the sidewall of joint shaft is provided with matched notch slot, the frame is provided with riveting mechanism at buckling station, the riveting mechanism is used for riveting processing to inner support pipe, so that the wall of inner support pipe is plastically deformed to form matched deformation part, and the matched deformation part is sunk into matched notch slot.The application makes inner support pipe plastically deformed by riveting, and matched deformation part is formed on it, which cooperates with matched notch slot, so that the rotation-stopping connection of inner support pipe and ball socket assembly is realized.

Description

Technical Field

[0001] This application relates to the field of automotive parts manufacturing, and in particular to an anti-rotation connection riveting device for an electric tailgate strut. Background Technology

[0002] The electric strut for a car tailgate typically includes an outer sleeve, an inner sleeve, a lead screw, an inner support tube assembly, a spring, a spring bushing, a motor assembly, a ball joint assembly, a bearing coupling, and a damper.

[0003] The inner support tube and the ball socket assembly are assembled and connected. The inner support tube is sleeved on the joint of the ball socket assembly. In order to prevent relative rotation between the two, the joint cross-section of the inner support tube and the ball socket assembly is hexagonal, which increases the manufacturing process difficulty of the inner support tube and the ball socket assembly. Summary of the Invention

[0004] To address the aforementioned issues, this application provides an anti-rotation connection riveting device for an electric tailgate strut.

[0005] The anti-rotation connection riveting device for an electric tailgate strut provided in this application adopts the following technical solution: A riveting device for anti-rotation connection of an electric tailgate strut, comprising a frame, a crimping station on the frame, a ball socket assembly located at the crimping station, an inner support tube with a circular cross-section, the ball socket assembly including a ball socket seat and a connector shaft fixedly connected to each other, the ball socket seat being located at one end of the connector shaft, the inner support tube being sleeved on the connector shaft, and a mating notch being formed on the side wall of the connector shaft; a riveting mechanism is provided on the frame at the crimping station, the riveting mechanism being used to rivet the inner support tube, causing plastic deformation of the inner support tube wall to form a mating deformation part, the mating deformation part being embedded in the mating notch.

[0006] By adopting the above technical solution, after the inner support tube with a circular cross section is fitted onto the joint shaft, the riveting mechanism rivets the inner support tube to form a mating deformation part. The mating deformation part forms a protrusion structure on the inner wall of the inner support tube that can fit with the mating notch groove, thereby establishing mutual anti-rotation limit between the inner support tube and the joint shaft.

[0007] Preferably, the frame is provided with an assembly station, the crimping station is provided with a placement rack for placing the ball socket assembly, the assembly station is provided with a sliding frame, the sliding frame slides relative to the frame, the sliding frame is used to place and fix the inner support tube, the inner support tube is coaxial with the joint shaft when placed on the sliding frame, and the sliding direction of the sliding frame is parallel to the length direction of the inner support tube.

[0008] By adopting the above technical solution, the sliding frame carries the inner support tube toward the ball socket assembly, thereby achieving the docking of the inner support tube and the connector shaft.

[0009] Preferably, the riveting mechanism includes a die and a drive assembly. The die slides relative to the mounting frame in the radial direction of the inner support tube, and the drive assembly is used to control the movement of the die.

[0010] By adopting the above technical solution, the mold is controlled by the drive component to approach the inner support tube and form an abutment against the inner support tube to deform it, and the deformed part is formed.

[0011] Preferably, a mating ring groove is formed on the side wall of the connector shaft along its own radial direction, the mating notch groove and the mating ring groove are connected, the mold includes a first module and a second module, there are multiple first modules arranged in a ring array around the connector shaft, the first module is directly opposite the mating ring groove, and the second module is directly opposite the mating notch groove.

[0012] By adopting the above technical solution, the mating deformation part formed by the first module is embedded in the mating annular groove, forming a backlash limit for the inner support tube, and the mating deformation part formed by the second module is embedded in the mating notch groove, forming a rotation limit for the inner support tube.

[0013] Preferably, the die further includes a support module, which has multiple support modules arranged around the connector shaft. When the protrusions of the first module and the second module press the inner support tube, the end of the support module contacts the tube wall of the inner support tube.

[0014] By adopting the above technical solution, when the first module and the second module stamp the inner support tube, the support module can provide a certain support for the inner support tube, thereby improving the stability of the inner support tube under stress.

[0015] Preferably, the driving assembly includes a driving disk and a driving rod. The driving disk is rotatably connected to the placement frame, and the axis of rotation coincides with the axis of the connector shaft. One end of the driving rod is hinged to the driving disk, and the other end is hinged to the first module. The hinge axis is parallel to the axis of rotation of the driving disk.

[0016] By adopting the above technical solution, the drive disk, each drive rod and each pressing die form an iris mechanism, realizing the synchronous radial movement of each pressing die.

[0017] Preferably, the groove wall of the mating notch is inclined, and the groove width gradually increases along the groove depth direction. The end of the die is provided with a cutting blade, and a bending module is movably connected to the side wall of the die. The wall of the inner support tube is cut by the cutting blade to form a cutting hole. A bending piece is formed on the inner support tube and at the hole wall of the cutting hole. After the end of the die is inserted into the mating notch, the bending module moves relative to the die to abut against the bending piece and deform it. The side of the bending piece away from the bending module contacts the inclined groove wall of the mating notch.

[0018] Preferably, the bending module and the pressing die are rotatably connected, with the rotation axis perpendicular to the moving direction of the pressing die. The bending module includes a working part and a force-receiving part fixedly connected to each other. The rotation axis of the bending module is located between the working part and the force-receiving part. A torsion spring is connected between the rotation axis of the bending module and the pressing die. A receiving groove is provided on the side wall of the pressing die. The rotation axis of the bending module is located in the receiving groove. In its natural state, the working part is located in the receiving groove, and the force-receiving part is located outside the receiving groove. After the working part enters the mating notch groove, the force-receiving part abuts against the outer wall of the inner support tube. When the bending module rotates, the working part rotates out of the receiving groove and abuts against the bending piece.

[0019] By adopting the above technical solution, after the riveting mechanism punches a cutting hole in the inner support tube, the bending module squeezes the bending piece to make it bend and deform. The deformed bending piece is completely embedded in the mating notch groove, forming a mutually snapped state with the joint shaft, so that the joint shaft and the inner support tube can be relatively fixed in both the axial and circumferential directions.

[0020] Preferably, the number of the mating notches is even, the notch shape is rectangular, all the mating notches are evenly arranged along the circumference of the joint axis, the number of inclined groove walls in a single mating notch is one, the inclined groove walls of the mating notch are located on the side closer to or farther from the ball socket, and the positions of the inclined groove walls in adjacent mating notches are staggered.

[0021] The above technical solution aims to improve the stability of the connection between the inner support tube and the joint shaft and the uniformity of structural stress.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a notch and a riveting mechanism, the inner support tube with a circular cross-section is fitted onto the joint shaft. The riveting mechanism then rivets the inner support tube to form a mating deformation part. The mating deformation part forms a protruding structure on the inner wall of the inner support tube that can mate with the mating notch, thereby establishing mutual anti-rotation and limiting of the inner support tube and the joint shaft. 2. By using the inclined groove wall of the matching notch and the setting of the bending piece, after the riveting mechanism punches a cutting hole on the inner support tube, the bending module squeezes the bending piece to make it bend and deform. The deformed bending piece is completely embedded in the matching notch and forms a mutually snapped state with the joint shaft, so that the joint shaft and the inner support tube can be relatively fixed in both the axial and circumferential directions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the anti-rotation connection riveting device for the electric strut of a car tailgate, as shown in Embodiment 1 of this application.

[0024] Figure 2 This is a schematic diagram illustrating the structure of the ball-and-socket assembly in Embodiment 1 of this application.

[0025] Figure 3 This is a schematic diagram of the structure of the inner support tube sleeve on the ball socket assembly in Embodiment 1 of this application.

[0026] Figure 4 This is a structural schematic diagram illustrating the riveting mechanism in Embodiment 1 of this application.

[0027] Figure 5 This is a structural schematic diagram illustrating the riveting mechanism in Embodiment 2 of this application.

[0028] Figure 6 This is a cross-sectional view of the riveting mechanism and the joint shaft in Embodiment 3 of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Crimping station; 12. Placement rack; 13. Assembly station; 14. Sliding rack; 2. Ball socket assembly; 21. Ball socket seat; 22. Connector shaft; 221. Mating notch; 222. Mating annular groove; 3. Inner support tube; 31. Mating deformation part; 32. Cutting hole; 321. Bending piece; 4. Riveting mechanism; 40. Support module; 41. Press mold; 411. First module; 412. Second module; 413. Bending module; 4131. Working part; 4132. Force-bearing part; 414. Cutting blade; 415. Receiving groove; 42. Drive assembly; 422. Drive disc; 423. Drive rod. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] Example 1: This application discloses an anti-rotation connection riveting device for an electric tailgate strut, such as... Figure 1 and 2As shown, the system includes a frame 1, which has a crimping station 11 and an assembly station 13. The crimping station 11 is used to place and fix the ball socket assembly 2, and the assembly station 13 is used to place the inner support tube 3. A riveting mechanism 4 is also provided at the crimping station 11, which is used to perform riveting processing on the inner support tube 3, thereby connecting the inner support tube 3 and the ball socket assembly 2 through riveting.

[0032] like Figure 1 , 2 As shown in Figure 3, the ball socket assembly 2 includes a ball socket seat 21 and a connector shaft 22 fixedly connected to each other. The ball socket seat 21 is located at the end of the connector shaft 22. A placement frame 12 is fixedly connected to the crimping station 11 of the frame 1. The placement frame 12 is equipped with a clamp (not shown in the figure) for temporarily fixing the ball socket assembly 2. A sliding frame 14 is provided at the assembly station 13. The sliding frame 14 is used to place and fix the inner support tube 3. The sliding frame 14 slides relative to the frame 1, and its driving method is a combination of a motor and a lead screw. When the ball socket assembly 2 is fixed on the placement frame 12 and the inner support tube 3 is fixed on the sliding frame 14, the connector shaft 22 of the ball socket assembly 2 is coaxial with the inner support tube 3. The sliding direction of the sliding frame 14 is parallel to the length direction of the inner support tube 3. That is, the sliding frame 14 carries the inner support tube 3 close to the ball socket assembly 2, and finally makes the inner support tube 3 coaxially fitted onto the connector shaft 22.

[0033] like Figure 1 , 3 As shown in Figure 4, the riveting mechanism 4 includes a drive assembly 42 and multiple pressing molds 41. Each pressing mold 41 slides relative to the placement frame 12 in the radial direction of the inner support tube 3, either towards or away from the joint shaft 22. The drive assembly 42 controls the movement of the pressing molds 41. In this embodiment, a mating annular groove 222 is formed radially on the side wall of the joint shaft 22, and a mating notch 221 is also formed on the joint shaft 22. The mating notch 221 and the mating annular groove 222 are connected. When the ball socket assembly 2 is placed on the placement frame 12, the mating notch 221 is located above the joint shaft 22. The pressing mold 41 includes multiple first modules 411 and one second module 412. There are four first modules 411 arranged in a circular array around the joint shaft 22. The first modules 411 and the second modules 412 are positioned differently along the axial direction of the inner support tube 3. The first modules 411 face the mating annular groove 222, and the second modules 412 face the mating notch 221. The drive assembly 42 is a hydraulic radial pipe clamping machine, which is fixedly mounted on the placement frame 12. The hydraulic power applies a thrust to each mold 41 to make it move synchronously. The first module 411 and the second module 412 together punch and bend the pipe wall of the inner support pipe 3 to deform it, so that the pipe wall of the inner support pipe 3 undergoes plastic deformation to form the fitting deformation part 31.

[0034] like Figure 4As shown, the molding die 41 also includes three support modules 40. Each support module 40 is located between every two adjacent first modules 411. When the first module 411 and the second module 412 deform the wall of the inner support tube 3, the end of the support module 40 only contacts the wall of the inner support tube 3 but does not abut against it. The support module 40 can provide a certain support for the inner support tube 3 at multiple angles, improving the stability of the inner support tube 3 under stress. The fitting deformation part 31 formed by the first module 411 is embedded in the fitting ring groove 222, and the fitting deformation part 31 formed by the second module 412 is embedded in the fitting notch groove 221, thereby forming an axial and axial snap-fit ​​fixation between the inner support tube 3 and the connector shaft 22.

[0035] Example 2: like Figure 5 As shown, the difference from the above embodiment is that in this embodiment, the driving assembly 42 includes a driving disk 422, a driving rod 423, and a driving motor, and the pressing mold 41 only includes a first module 411 and a second module 412. The driving disk 422 is rotatably connected to the placement frame 12, and the axis of rotation coincides with the axis of the connector shaft 22. One end of the driving rod 423 is hinged to the driving disk 422, and the other end is hinged to the first module 411. The hinge axis is parallel to the axis of rotation of the driving disk 422. The driving motor is fixedly connected to the placement frame 12 (not shown in the figure), and it controls the rotation of the driving disk 422 through a gear mechanism. There are seven first modules 411 and only one second module 412. When the driving disk 422 rotates, the driving disk 422 applies a pulling or pushing force to the second module 412 and each of the first modules 411 through the connecting rod, causing each pressing mold 41 to move, similar to an iris mechanism.

[0036] Example 3: like Figure 6 As shown, the difference from the previous embodiment is that in this embodiment, the connector shaft 22 does not have a mating ring groove 222, but the connector shaft 22 has four mating notch grooves 221. The four mating notch grooves 221 are evenly arranged along the circumference of the connector shaft 22, and the groove shape of the mating notch groove 221 is rectangular. There are four modules and the modules and mating notch grooves 221 correspond one-to-one. The end of the mold 41 facing the connector shaft 22 is formed with a cutting blade 414. When the mold 41 contacts the inner support tube 3, the tube wall of the inner support tube 3 is cut by the cutting blade 414 to form a cutting hole 32. The tube wall structure cut off by the cutting blade 414 forms a bent piece 321. The bent piece 321 is integrally connected to one of the hole walls of the cutting hole 32.

[0037] like Figure 6As shown, one of the groove walls of the mating notch 221 is inclined, meaning the groove width gradually increases along the groove depth direction of the mating notch 221. The inclined groove wall and the bending piece 321 are located on the same side. A receiving groove 415 is provided on the side of the pressing die 41 facing the inclined groove wall. A bending module 413 is movably connected to the pressing die 41 within the receiving groove 415. The movement of the bending module 413 is used to further bend and rivet the bending piece 321. The bending module 413 and the groove wall of the receiving groove 415 are rotatably connected, and the rotation axis is perpendicular to the moving direction of the pressing die 41. The bending module 413 includes a working part 4131 and a force-receiving part 4132 that are fixedly connected to each other. The working part 4131 is located closer to the axis of the connector shaft 22 than the force-receiving part 4132. A torsion spring (not shown in the figure) connects the rotating shaft of the bending module 413 and the pressing die 41. In its natural state, the working part 4131 is located inside the receiving groove 415, and the force-receiving part 4132 is located outside the receiving groove 415, meaning that the working part 4131 can smoothly enter the mating notch groove 221. After the working part 4131 enters the mating notch groove 221, the force-receiving part 4132 abuts against the outer wall of the inner support tube 3 and is pushed, causing the bending module 413 to rotate. The working part 4131 rotates out of the receiving groove 415 and abuts against the bending piece 321, forming a pushing bend on the bending piece 321, causing the bending piece 321 to move closer to the inclined wall of the mating notch groove 221.

[0038] like Figure 6 As shown, after the module exits from the mating notch 221, the deformed bent piece 321 completely embeds itself into the mating notch 221, forming a snap-fit ​​connection with the connector shaft 22. This allows the connector shaft 22 and the inner support tube 3 to be relatively fixed in both the axial and circumferential directions. When it is necessary to disassemble the inner support tube 3 and the ball socket assembly 2, simply bend the bent piece 321 to remove it from the mating notch 221. The inclined groove wall of the mating notch 221 is located on the side closest to or furthest from the ball socket 21, and the inclined groove walls of adjacent mating notches 221 are staggered. That is, in the four mating notches 221, the inclined groove walls of every two opposing mating notches 221 are located on the same side, which aims to improve the stability of the snap-fit ​​relationship between the inner support tube 3 and the connector shaft 22 and the uniformity of structural stress.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A riveting and pressing device for anti-rotation connection of an electric tailgate strut, characterized in that: The system includes a frame (1), on which a crimping station (11) is provided. A ball socket assembly (2) is located on the crimping station (11). The inner support tube (3) has a circular cross-section. The ball socket assembly (2) includes a ball socket seat (21) and a connector shaft (22) that are fixedly connected to each other. The ball socket seat (21) is located at one end of the connector shaft (22). The inner support tube (3) is sleeved on the connector shaft (22). A mating notch (221) is provided on the side wall of the connector shaft (22). A riveting mechanism (4) is provided on the frame (1) at the crimping station (11). The riveting mechanism (4) is used to perform riveting processing on the inner support tube (3), causing the tube wall of the inner support tube (3) to undergo plastic deformation to form a mating deformation part (31). The mating deformation part (31) is embedded in the mating notch (221). 1) The frame (1) is provided with an assembly station (13), the crimping station (11) is provided with a placement rack (12) for placing the ball socket assembly (2), the assembly station (13) is provided with a sliding rack (14), the sliding rack (14) slides relative to the frame (1), the sliding rack (14) is used to place and fix the inner support tube (3), the inner support tube (3) is coaxial with the joint shaft (22) when placed on the sliding rack (14), the sliding direction of the sliding rack (14) is parallel to the length direction of the inner support tube (3); the riveting mechanism (4) includes a pressing die (41) and a driving assembly (42), the pressing die (41) slides relative to the placement rack (12), the sliding direction is the radial direction of the inner support tube (3), and the driving assembly (42) is used to control the movement of the pressing die (41); The groove wall of the mating notch (221) is inclined, and the groove width gradually increases along the groove depth direction of the mating notch (221). The end of the die (41) is provided with a cutting blade (414). A bending module (413) is movably connected to the side wall of the die (41). The wall of the inner support tube (3) is cut by the cutting blade (414) to form a cutting hole (32). A bend is formed on the inner support tube (3) at the hole wall of the cutting hole (32). After the end of the die (41) is inserted into the notch (221), the bending module (413) moves relative to the die (41) to abut against the bent piece (321) and deform it. The side of the bent piece (321) away from the bending module (413) contacts the inclined groove wall of the notch (221). The bending module (413) and the die (41) are rotatably connected, and the axis of rotation is perpendicular to the direction of movement of the die (41). The bending module (413) includes a working part (4131) and a force-receiving part (4132) fixedly connected to each other. The rotation axis of the bending module (413) is located between the working part (4131) and the force-receiving part (4132). A torsion spring is connected between the rotation axis of the bending module (413) and the die (41). A receiving groove (415) is provided on the side wall of the die (41). The rotation axis of the bending module (413) is located in the receiving groove (4132). 15) In its natural state, the working part (4131) is located in the receiving groove (415), and the force-bearing part (4132) is located outside the receiving groove (415). After the working part (4131) enters the mating notch groove (221), the force-bearing part (4132) abuts against the outer wall of the inner support tube (3). The bending module (413) rotates, and the working part (4131) rotates out of the receiving groove (415) and abuts against the bending piece (321).

2. The anti-rotation connection riveting device for an electric tailgate strut as described in claim 1, characterized in that: The connector shaft (22) has a mating annular groove (222) radially formed on its side wall. The mating notch (221) and the mating annular groove (222) are connected. The mold (41) includes a first module (411) and a second module (412). There are multiple first modules (411) arranged around the connector shaft (22). The first module (411) faces the mating annular groove (222), and the second module (412) faces the mating notch (221).

3. The anti-rotation connection riveting device for an electric tailgate strut as described in claim 2, characterized in that: The die (41) also includes a support module (40), which has multiple support modules arranged around the connector shaft (22). When the protrusion of the first module (411) and the protrusion of the second module (412) press the inner support tube (3), the end of the support module (40) contacts the tube wall of the inner support tube (3).

4. The anti-rotation connection riveting device for an electric tailgate strut as described in claim 2, characterized in that: The drive assembly (42) includes a drive disk (422) and a drive rod (423). The drive disk (422) is rotatably connected to the placement frame (12), and the rotation axis coincides with the axis of the connector shaft (22). One end of the drive rod (423) is hinged to the drive disk (422), and the other end is hinged to the first module (411). The hinge axis is parallel to the rotation axis of the drive disk (422).

5. The anti-rotation connection riveting device for an electric tailgate strut as described in claim 1, characterized in that: The number of the mating notches (221) is even, the notch shape of the notch (221) is rectangular, all the mating notches (221) are evenly arranged along the circumference of the joint shaft (22), the number of inclined groove walls in a single mating notch (221) is one, the inclined groove walls of the mating notch (221) are located on the side that is close to or far from the ball socket (21), and the positions of the inclined groove walls in adjacent mating notches (221) are staggered.

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