Driving unit disassembling tool

Abstract

The utility model relates to the technical field of machinery, in particular to a driving unit disassembling tool which comprises a screw rod, a drag hook, a profiling connector, a nut assembly and connecting discs, the drag hook extending downwards is arranged on the edge of the first connecting disc, the nut assembly is installed in the center of the first connecting disc, and the outer ring of the nut assembly is rotationally connected with the first connecting disc. An inner ring of the nut assembly is in threaded connection with the screw, a second connecting disc is fixed to the bottom of the screw, a profiling connector is fixed to the bottom of the second connecting disc, and the profiling connector corresponds to the control unit interface in position and is matched with the control unit interface in structure. Compared with the prior art, the driving unit disassembling tool is designed, and the sealant at the gap between the cover and the control unit and the sealant at the gap between the cover and the motor are torn, so that the cover is pulled out on the premise of not damaging the control unit, and convenience is provided for subsequent measurement and analysis.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, in particular to a driving unit disassembly tool. Background Art

[0002] The drive unit is the core drive component of EPS, such as Figure 1 As shown, after receiving the steering wheel torque signal from the driver, the drive unit 1 will output a certain torque to the outside, and amplify the output torque through the worm 2 and the worm wheel 3 to play a power assist role.

[0003] like Figure 2 As shown, the driving unit is composed of a control unit 5, a motor 6, and a cover 4. The control unit 5 and the motor 6 are fixed together by screws. To ensure the waterproof properties of the driving unit, the gap between the cover 4 and the control unit 5 and the gap between the cover 4 and the motor 6 are filled with sealant 7.

[0004] The core module of the drive unit is the control unit. During the design verification process, in order to confirm whether the control unit can meet the various extreme requirements of the vehicle and the test bench, after the assembly and vehicle test, it is necessary to pull out the cover 4 and then thoroughly check the control unit 6 to confirm whether there is any abnormality.

[0005] However, the cured sealant 7 firmly fixes the cover 4, the control unit 5 and the motor 6 together. In order to pull out the cover 4, the sealant 7 filling the gap must be torn. In order to tear the sealant 7 in the gap between the cover 4 and the control unit 5, it is necessary to ensure that the cover 4 has an upward pulling force and the control unit 5 has a downward pressure. However, since only the control unit interface 17 of the control unit 5 is exposed from the cover 4 and the control unit interface 17 is very fragile, it is impossible to apply downward pressure to the control unit 5 through the control unit interface 17.

[0006] Therefore, it is necessary to design a drive unit disassembly tool that can pull out the cover without damaging the control unit. Summary of the invention

[0007] The utility model aims to overcome the deficiencies of the prior art and provides a drive unit disassembly tool, which can pull out a cover without damaging the control unit.

[0008] In order to achieve the above-mentioned purpose, the utility model is a drive unit disassembly tool, including a screw, a hook, a contour joint, a nut assembly, and a connecting plate. The edge of the connecting plate one is provided with a hook extending downward, and a nut assembly is installed in the center of the connecting plate one. The outer ring of the nut assembly is rotatably connected to the connecting plate one, and the inner ring of the nut assembly is threadedly connected to the screw. A connecting plate two is fixed to the bottom of the screw, and a contour joint is fixed to the bottom of the connecting plate two. The contour joint corresponds to the position of the control unit interface and the structure matches.

[0009] The nut assembly comprises an upper nut and a lower nut. A connecting piece extending upward is arranged at the center of the lower nut. The connecting piece is provided with a threaded hole penetrating from top to bottom. The upper end of the connecting piece is interference fit with the upper nut.

[0010] The threaded hole is connected with the screw rod, and a set of connecting plates is arranged outside the connecting piece and located between the lower nut and the upper nut.

[0011] A hook structure is arranged on the inner side of the lower end of the draw hook.

[0012] The hook structure matches the gap between the cover and the motor.

[0013] The contoured connector is inserted into the control unit interface, and the end of the contoured connector contacts the end surface of the control unit.

[0014] Compared with the prior art, the utility model designs a drive unit disassembly tool, which realizes the tearing of the sealant at the gap between the cover and the control unit and the gap between the cover and the motor, so that the cover can be pulled out without damaging the control unit, providing convenience for subsequent measurement and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a drive unit, a worm and a worm wheel in the prior art.

[0016] Figure 2 It is a cross-sectional view of a drive unit in the prior art.

[0017] Figure 3 It is a structural schematic diagram of the utility model.

[0018] Figure 4 It is a cross-sectional view of the utility model.

[0019] Figure 5 This is a working principle diagram of the utility model.

[0020] Figure 6 for Figure 5 A partial enlarged view of . Implementation

[0021] The utility model is now further described with reference to the accompanying drawings.

[0022] See also Figure 3 and Figure 4The utility model is a drive unit disassembly tool, including a screw, a hook, a contour joint, a nut assembly, and a connecting disk. The edge of the connecting disk 13 is provided with a hook 10 extending downward, and a nut assembly 12 is installed in the center of the connecting disk 13. The outer ring of the nut assembly 12 is rotatably connected to the connecting disk 13, and the inner ring of the nut assembly 12 is threadedly connected to the screw 9. A connecting disk 2 14 is fixed to the bottom of the screw 9, and a contour joint 11 is fixed to the bottom of the connecting disk 2 14. The contour joint 11 corresponds to the position of the control unit interface 17, and the structure is matched, so that the contour joint 11 can be inserted into the control unit interface 17.

[0023] The nut assembly 12 includes an upper nut 15 and a lower nut 16 . A connecting piece extending upward is provided at the center of the lower nut 16 . The connecting piece is provided with a threaded hole extending vertically therethrough. The upper end of the connecting piece is interference fit with the upper nut 15 .

[0024] The threaded hole is connected to the screw rod 9, and the connecting plate 13 is sleeved outside the connecting piece and is located between the lower nut 16 and the upper nut 15. It is ensured that the nut assembly 12 and the connecting plate 13 can rotate freely, so that the connecting plate 13 can move up and down relative to the screw rod 9 axially by rotating the nut assembly 12.

[0025] A hook structure is provided on the inner side of the lower end of the pull hook 10. The hook structure matches the gap between the cover 4 and the motor 6, so that the hook structure can be inserted into the gap between the cover 4 and the motor 6 for disassembly.

[0026] See also Figure 5 , Figure 6 The hook structure of the draw hook 10 is inserted into the gap between the cover 4 and the motor 6 and contacts the bottom of the cover 4 . The contoured connector 11 is inserted into the control unit interface 17 and contacts the bottom of the control unit interface 17 .

[0027] When the nut assembly 12 is rotated, the nut assembly 12 moves upward along the screw rod 9, and drives the connection plate 1 13 to move upward, and the connection plate 1 13 drives the hook 10 to move upward. Since the hook 10 contacts the bottom of the cover 4, the cover 4 moves upward. At the same time, the contour joint 11 is inserted into the control unit interface 17 and contacts the bottom of the control unit interface 17. Since the connection plate 2 14 is fixed to the screw rod 9, when the connection plate 1 13 moves upward, it will inevitably give a downward force to the screw rod 9, and this force will be transmitted to the contour joint 11. The contour joint 11 is inserted into the control unit interface 17, and the end of the contour joint 11 contacts the end face of the control unit 5, and the force will act on the control unit 5.

[0028] At this time, the sealant 7 connecting the control unit 5 and the cover 4 will be subjected to forces in both the upper and lower directions at the same time. When the force reaches a certain value, the sealant 7 filling the gap between the control unit 5 and the cover 4 will be torn. On the other hand, since the control unit 5 and the motor 6 are fixed by screws, the downward pressure acting on the control unit 5 will also be transmitted to the motor 6. At this time, the sealant 7 filling the gap between the cover 4 and the motor 6 will also be subjected to the upward pulling force of the cover 4 and the downward pressure of the motor 6. When the force reaches a certain value, the sealant will tear, thus ensuring that the cover 4 can be smoothly detached from the control unit 5 and the motor 6 without damage.

[0029] The utility model designs a drive unit disassembly tool, which realizes the tearing of the sealant at the gap between the cover and the control unit and at the gap between the cover and the motor, so that the cover can be pulled out without damaging the control unit, providing convenience for subsequent measurement and analysis.

Claims

1. A drive unit disassembly tool, comprising a screw, a draw hook, a contoured joint, a nut assembly, and a connecting plate, characterized in that: A downwardly extending draw hook (10) is provided at the edge of the connection disk 1 (13); a nut assembly (12) is installed at the center of the connection disk 1 (13); the outer ring of the nut assembly (12) is rotatably connected to the connection disk 1 (13); the inner ring of the nut assembly (12) is threadedly connected to the screw rod (9); a connection disk 2 (14) is fixed to the bottom of the screw rod (9); a contour joint (11) is fixed to the bottom of the connection disk 2 (14); the contour joint (11) corresponds to the position of the control unit interface (17) and has matching structure.

2. The drive unit disassembly tool according to claim 1, characterized in that: The nut assembly (12) comprises an upper nut (15) and a lower nut (16). A connecting piece extending upward is provided at the center of the lower nut (16). The connecting piece is provided with a threaded hole extending vertically therethrough. The upper end of the connecting piece is interference-fitted with the upper nut (15).

3. The drive unit disassembly tool according to claim 2, characterized in that: The threaded hole is connected to the screw rod (9), and a connecting plate (13) is sleeved outside the connecting piece and is located between the lower nut (16) and the upper nut (15).

4. The drive unit disassembly tool according to claim 1, characterized in that: A hook-shaped structure is provided on the inner side of the lower end of the pull hook (10).

5. The drive unit disassembly tool according to claim 4, characterized in that: The hook-shaped structure matches the gap between the cover (4) and the motor (6).

6. The drive unit disassembly tool according to claim 1, characterized in that: The contoured connector (11) is inserted into the control unit interface (17), and the end of the contoured connector (11) contacts the end surface of the control unit (5).

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