Inner clamp spring mounting device

Abstract

The utility model discloses an inner snap spring mounting device, which comprises a handle, a pressure head, a support pin and a fastening sleeve with a hollow structure, the handle is connected with the pressure head, one end of the support pin is movably positioned in the pressure head, the fastening sleeve is provided with a first cavity and a second cavity communicated with the first cavity, and the second cavity is communicated with the first cavity. The other end of the supporting pin is movably located in the first cavity, the first cavity is of a conical structure, the second cavity is used for installing a fork shaft, and the supporting pin is provided with an annular groove used for installing an inner clamping spring. Due to the fact that the inner clamping spring is of the C-shaped structure with the notch and is continuously tightened under the constraint of the first cavity of the conical structure, when the supporting pin and the inner clamping spring enter the second cavity and the inner clamping spring is aligned with the installation groove in the inner circumferential wall of the fork shaft, the constraint is relieved, the inner clamping spring resets and bounces into the installation groove, and the success rate of assembly of the inner clamping spring and the fork shaft can be effectively increased through the arrangement of the fastening sleeve. The flatness of the inner clamp spring is improved, and the inner clamp spring is prevented from being damaged in the assembling process.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical assembly, in particular to an inner clamp spring installation device. Background Art

[0002] During the installation of the front auxiliary fork shaft of the transmission, the retaining spring needs to be completely embedded in the internal slot of the fork shaft. Usually, it is necessary to manually assemble the retaining spring onto the support pin first, and then knock the support pin into the fork so that the retaining spring is embedded in the internal slot of the fork shaft. Due to the high hardness, small thickness, and large opening of the retaining spring, there is a certain amount of free clearance in the support pin slot. When the retaining spring is knocked on the support pin, it is easy to cause the retaining spring to twist and deform, and the opening to be misplaced, so that the retaining spring is easy to fall out of the support pin slot when it does not reach the correct position, and then get stuck in the fork shaft. If the knocking continues, it will cause the retaining ring to deform, break, and the fork shaft to swell and break, making the installation cycle of the entire assembly process too long and the scrap rate of parts high. Utility Model Content

[0003] In view of the above problems, the utility model proposes an inner retaining spring installation device, which effectively improves the success rate of assembling the inner retaining spring and the fork shaft, improves the flatness of the inner retaining spring, and prevents the inner retaining spring from being damaged during assembly.

[0004] The technical solution adopted by the utility model is as follows: an internal retaining ring installation device, including a handle, a pressure head, a support pin and a fastening sleeve with a hollow structure, the handle is connected to the pressure head, one end of the support pin is movably located inside the pressure head, the fastening sleeve is provided with a first chamber and a second chamber connected to the first chamber, the other end of the support pin is movably located in the first chamber, the first chamber is a conical structure, the second chamber is used for installing a fork shaft, and the support pin is provided with an annular groove for installing the internal retaining ring.

[0005] Optionally, the first chamber has a first end and a second end connected to the second chamber, the diameter of the first chamber gradually decreases from the first end to the second end, and the diameter of the second end is the same as the diameter of the inner hole of the fork shaft.

[0006] Optionally, the support pin includes a first pin body and a second pin body connected to the first pin body, the first pin body is movably located inside the pressure head, the second pin body is provided with an annular bulge at one end close to the first pin body, the annular bulge movably abuts against the upper end surface of the fastening sleeve, the second pin body is provided with an annular groove at one end close to the fork shaft, and the distance between the annular bulge and the annular groove is the same as the length of the first chamber.

[0007] Optionally, the fastening sleeve includes a first hoop body and a second hoop body detachably connected to the first hoop body, and the first hoop body and the second hoop body together form the first chamber and the second chamber.

[0008] Optionally, one end of the first hoop body is rotatably connected to one end of the second hoop body, the other end of the second hoop body is provided with a clamping column, and the other end of the first hoop body is provided with a limiting hole for the clamping column to pass through.

[0009] Optionally, the first hoop body is provided with a locking piece, one end of the locking piece is rotatably connected to the first hoop body, and the locking piece is provided with a clamping groove that cooperates with the clamping column.

[0010] Optionally, the handle is provided with a limiting rod, and the fastening sleeve is provided with a limiting groove cooperating with the limiting rod.

[0011] Optionally, the number of the limiting rods is two, the pressure head is located between the two limiting rods, and the first hoop body and the second hoop body are respectively provided with the limiting groove.

[0012] The beneficial effect of the utility model is that the inner retaining spring is continuously tightened under the constraint of the first chamber of the conical structure. When the support pin and the inner retaining spring enter the second chamber and the inner retaining spring is aligned with the mounting groove of the inner circumferential wall of the fork shaft, the constraint is released and the inner retaining spring is reset and springs into the mounting groove. The setting of the fastening sleeve can effectively improve the success rate of the assembly of the inner retaining spring and the fork shaft, improve the flatness of the inner retaining spring, and prevent the inner retaining spring from being damaged during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 An exploded view of the inner retaining spring installation device proposed in an embodiment of the utility model;

[0014] Figure 2 A cross-sectional view of an inner retaining spring installation device proposed in an embodiment of the utility model.

[0015] The marks in the accompanying drawings are: 1. handle; 2. pressure head; 3. support pin; 4. fastening sleeve; 5. first chamber; 6. second chamber; 7. fork shaft; 8. inner retaining spring; 9. ring groove; 10. first pin body; 11. second pin body; 12. ring convex; 13. first hoop body; 14. second hoop body; 15. clamping column; 16. limiting hole; 17. locking piece; 18. clamping groove; 19. limiting rod; 20. limiting groove; 21. mounting groove. DETAILED DESCRIPTION

[0016] The utility model is described in detail below in conjunction with the accompanying drawings.

[0017] like Figure 1 and 2As shown, this embodiment discloses an internal retaining ring installation device, including a handle 1, a pressure head 2, a support pin 3 and a fastening sleeve 4 with a hollow structure, the handle 1 is connected to the pressure head 2, one end of the support pin 3 is movably located inside the pressure head 2, the fastening sleeve 4 is provided with a first chamber 5 and a second chamber 6 connected to the first chamber 5, the other end of the support pin 3 is movably located in the first chamber 5, the first chamber 5 is a conical structure, the second chamber 6 is used to install the fork shaft 7, and the support pin 3 is provided with an annular groove 9 for installing the internal retaining ring 8. The tightening sleeve 4 fixes the pressure head 2 and the fork shaft 7, and knocks the handle 1. The vibration of the pressure head 2 and the handle 1 causes the support pin 3 to drive the inner retaining spring 8 to descend. Since the inner retaining spring 8 is a C-shaped structure with a notch, it is continuously tightened under the constraint of the first chamber 5 of the conical structure. When the support pin 3 and the inner retaining spring 8 enter the second chamber 6 and the inner retaining spring 8 is aligned with the mounting groove 21 of the inner circumferential wall of the fork shaft 7, the constraint is released, and the inner retaining spring 8 resets and bounces into the mounting groove 21. The setting of the tightening sleeve 4 can effectively improve the success rate of assembling the inner retaining spring 8 and the fork shaft 7, improve the flatness of the inner retaining spring 8, and prevent the inner retaining spring 8 from being damaged during assembly.

[0018] In this embodiment, if Figure 1 As shown, the first chamber 5 has a first end and a second end connected to the second chamber 6. The diameter of the first chamber 5 gradually decreases from the first end to the second end, and the diameter of the second end is the same as the diameter of the inner hole of the fork shaft 7. The first end facilitates the insertion of the pressure head 2, and the second end has a guiding and tightening effect on the inner retaining spring 8.

[0019] In this embodiment, if Figure 1 As shown, the support pin 3 includes a first pin body 10 and a second pin body 11 connected to the first pin body 10. The first pin body 10 is movably located inside the pressure head 2. The second pin body 11 is provided with an annular protrusion 12 at one end close to the first pin body 10. The annular protrusion 12 movably abuts against the upper end surface of the fastening sleeve 4. The second pin body 11 is provided with an annular groove 9 at one end close to the fork shaft 7. The distance between the annular protrusion 12 and the annular groove 9 is the same as the length of the first chamber 5. Under the knocking of the handle 1, the support pin 3 moves downward until the annular protrusion 12 abuts against the fastening sleeve 4. At this time, the inner retaining spring 8 just enters the inner hole of the fork shaft 7. The fastening sleeve 4 is removed, and the handle 1 is continuously knocked, so that the support pin 3 drives the inner retaining spring 8 to continue to descend until the inner retaining spring 8 is aligned with the mounting groove 21 of the inner peripheral wall of the fork shaft 7, and the inner retaining spring 8 springs into the mounting groove 21. The first pin body 10 and the second pin body 11 can be integrally formed.

[0020] In this embodiment, if Figure 1As shown, the fastening sleeve 4 includes a first hoop body 13 and a second hoop body 14 detachably connected to the first hoop body 13, and the first hoop body 13 and the second hoop body 14 enclose a first chamber 5 and a second chamber 6. One end of the first hoop body 13 is rotatably connected to one end of the second hoop body 14, and a clamping column 15 is provided at the other end of the second hoop body 14, and a limiting hole 16 for the clamping column 15 to pass through is provided at the other end of the first hoop body 13. One end of the first hoop body 13 is rotatably connected to one end of the second hoop body 14 through a pin, and when the first hoop body 13 and the second hoop body 14 are matched, the clamping column 15 of the second hoop body 14 enters the limiting hole 16 and connects with the first hoop body 13, forming the first chamber 5 and the second chamber 6 that define the support pin 3 and the fork shaft 7.

[0021] In this embodiment, if Figure 1 As shown, the first hoop body 13 is provided with a locking member 17, one end of the locking member 17 is rotatably connected to the first hoop body 13, and the locking member 17 is provided with a slot 18 that matches the clamping column 15. The locking member 17 is connected to the first hoop body 13 through a rotating shaft, and the locking member 17 is close to the end of the limiting hole 16 away from the second hoop body 14. When the clamping column 15 passes through the limiting hole 16, the locking member 17 is rotated to make the slot 18 on the locking member 17 match the outer peripheral wall of the clamping column 15, so as to fix the clamping column 15 and prevent the first hoop body 13 from being disengaged from the second hoop body 14.

[0022] In this embodiment, if Figure 1 As shown, the handle 1 is provided with a limit rod 19, and the fastening sleeve 4 is provided with a limit groove 20 that cooperates with the limit rod 19. The limit rod 19 supports the handle 1. When the handle 1 is struck, the handle 1 and the pressure head 2 remain in place. The handle 1 and the pressure head 2 can be connected by screws. When the support pin 3 drives the inner retaining spring 8 to move to the inner hole of the fork shaft 7, the fastening sleeve 4 and the handle 1 can also be removed to directly strike the pressure head 2. There are two limit rods 19, and the pressure head 2 is located between the two limit rods 19. The first hoop body 13 and the second hoop body 14 are respectively provided with limit grooves 20.

[0023] The above description is only a preferred embodiment of the utility model, and does not limit the patent protection scope of the utility model. Any equivalent structural transformation made using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the utility model.

Claims

1. An internal retaining spring installation device, characterized in that: It includes a handle, a pressure head, a support pin and a fastening sleeve with a hollow structure, the handle is connected to the pressure head, one end of the support pin is movably located inside the pressure head, the fastening sleeve is provided with a first chamber and a second chamber connected to the first chamber, the other end of the support pin is movably located in the first chamber, the first chamber is a conical structure, the second chamber is used for installing the fork shaft, and the support pin is provided with a ring groove for installing the inner retaining ring.

2. The inner retaining spring installation device according to claim 1, characterized in that: The first chamber has a first end and a second end connected to the second chamber. The diameter of the first chamber gradually decreases from the first end to the second end. The diameter of the second end is the same as the diameter of the inner hole of the fork shaft.

3. The inner retaining spring installation device according to claim 1, characterized in that: The support pin includes a first pin body and a second pin body connected to the first pin body, the first pin body is movably located inside the pressure head, the second pin body is provided with an annular bulge at one end close to the first pin body, the annular bulge movably abuts against the upper end surface of the fastening sleeve, the second pin body is provided with an annular groove at one end close to the fork shaft, and the distance between the annular bulge and the annular groove is the same as the length of the first chamber.

4. The inner retaining spring installation device according to claim 1, characterized in that: The fastening sleeve comprises a first hoop body and a second hoop body detachably connected to the first hoop body, and the first hoop body and the second hoop body together form the first chamber and the second chamber.

5. The inner retaining spring installation device according to claim 4, characterized in that: One end of the first hoop body is rotatably connected to one end of the second hoop body, the other end of the second hoop body is provided with a clamping column, and the other end of the first hoop body is provided with a limiting hole for the clamping column to pass through.

6. The inner retaining spring installation device according to claim 5, characterized in that: The first hoop body is provided with a locking piece, one end of which is rotatably connected to the first hoop body, and the locking piece is provided with a clamping groove matched with the clamping column.

7. The inner retaining spring installation device according to claim 4, characterized in that: The handle is provided with a limiting rod, and the fastening sleeve is provided with a limiting groove matched with the limiting rod.

8. The inner retaining spring installation device according to claim 7, characterized in that: There are two limit rods, the pressure head is located between the two limit rods, and the first hoop body and the second hoop body are respectively provided with the limit grooves.

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