Miniature vehicle transmission shaft with telescopic sleeve convenient to replace

Abstract

The utility model discloses a miniature vehicle transmission shaft convenient to replace a telescopic sleeve, which comprises a first universal joint and a replacement mechanism mounted at one end of the first universal joint, the replacement mechanism comprises a brake assembly, and the brake assembly comprises a hollow plate fixedly connected with one end of the first universal joint; the miniature vehicle transmission shaft with the telescopic sleeve convenient to replace is provided with a first bevel gear and a second bevel gear, a hand rotating handle is rotated through external force, a connecting column and the first bevel gear can be driven to rotate, and the telescopic sleeve can be conveniently replaced through a meshing structure of the first bevel gear and the second bevel gear. A second bevel gear can be rotated through rotation of a first bevel gear, a threaded column is indirectly driven to rotate, a supporting frame can be moved through rotation of the threaded column, clamping groove clamping plates can be moved through movement of the supporting frame, and clamping plates and telescopic sleeves can be clamped and fixedly installed through relative movement of the two clamping groove clamping plates; therefore, the telescopic sleeve is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of mini-car transmission shafts, in particular to a mini-car transmission shaft which is convenient for replacing a telescopic sleeve. Background Art

[0002] As an important part of the automobile transmission system, the drive shaft is responsible for transmitting the engine power from the transmission to the drive axle, thereby driving the wheels to rotate. In this process, the telescopic sleeve plays a key role in automatically adjusting the distance change between the transmission and the drive axle.

[0003] Most of the mini-car drive shafts on the market have too simple structures, and some telescopic sleeves are directly fixed on the end of the universal joint, which makes the telescopic sleeve inconvenient to replace or repair. Therefore, a mini-car drive shaft with easy replacement of the telescopic sleeve is needed. Utility Model Content

[0004] The purpose of the utility model is to provide a mini vehicle transmission shaft with an easy replacement of telescopic sleeves, which solves the problem in the prior art that most of the mini vehicle transmission shafts have too simple structures and some telescopic sleeves are directly fixed to the end of the universal joint, making it difficult to replace or repair the telescopic sleeves.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mini vehicle transmission shaft that is convenient for replacing a telescopic sleeve, comprising a first universal joint and a replacement mechanism installed at one end of the first universal joint, wherein the replacement mechanism comprises a brake assembly;

[0006] The brake assembly includes a first universal joint having one end fixedly connected to a hollow plate, a first bearing fixed to the inner side of the side wall of the hollow plate, a connecting column fixed to the inner side of the first bearing, one end of the connecting column fixedly connected to a hand handle, the other end of the connecting column fixedly connected to a first bevel gear, the side wall of the first bevel gear meshingly connected to a second bevel gear, one end of the second bevel gear fixedly connected to a threaded column, and the other end of the threaded column is fixedly fixed to a second bearing.

[0007] Preferably, the outer thread of the threaded column is connected with a thread groove, a support frame is fixed to the outer side of the thread groove, a slider is fixed to the side wall of the support frame, the outer side of the slider is slidably connected to a slide rail, a slot clamp is fixed to the other side wall of the support frame, the inner side of the slot clamp is clamped with a clamping plate, and a telescopic sleeve is provided at one end of the clamping plate.

[0008] Preferably, a sliding groove is provided on the inner wall of the telescopic sleeve, a sliding spline is slidably connected to the inner side of the sliding groove, and a support column is fixedly connected to the inner side of the sliding spline.

[0009] Preferably, a second universal joint is provided at the other end of the support column, a rear plate is provided at the other end of the second universal joint, and a threaded bolt is provided on the side wall of the rear plate.

[0010] Preferably, a clamping groove is provided on the outer side wall of the top end of the second universal joint, a sealing clamping plate is clamped on the inner side of the clamping groove, and a soft rubber sealing plate is fixed on the outer side of the sealing clamping plate.

[0011] Preferably, a first fixing plate is fixed to the side wall of the soft rubber sealing plate, a second fixing plate is arranged on one side of the first fixing plate, a threaded nail is arranged on the inner side of the second fixing plate, a threaded cap is threadedly connected to the outer side of the threaded nail, an oil filling port is opened on the side wall of the soft rubber sealing plate, and a closing cap is threadedly connected to the inner side of the oil filling port.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The mini vehicle transmission shaft that is easy to replace the telescopic sleeve is provided with a first bevel gear and a second bevel gear. The hand-turned handle is rotated by external force to drive the connecting column and the first bevel gear to rotate. Through the meshing structure of the first bevel gear and the second bevel gear, the rotation of the first bevel gear can make the second bevel gear rotate, and indirectly drive the threaded column to rotate. Then, through the threaded connection between the threaded column and the thread groove, the rotation of the threaded column can make the support frame move. The movement of the support frame can clamp the slot clamping plate. Through the relative movement of the two groups of clamping slot clamping plates, the clamping plate and the telescopic sleeve can be clamped and fixedly installed, so that the telescopic sleeve is easy to replace, which avoids that most of the structures of the mini vehicle transmission shaft are too simple, and some of the telescopic sleeves are directly fixed on the end of the universal joint, which makes it inconvenient to replace or repair the telescopic sleeve.

[0014] The microcar transmission shaft which is convenient for replacing the telescopic sleeve is provided with a threaded nail and a threaded cap, through which the first fixing plate and the second fixing plate can be installed and disassembled, and the soft rubber sealing plate can be installed and disassembled indirectly, so as to prevent the soft rubber sealing plate from being easily disassembled, worn and broken after long-term use, resulting in leakage of internal lubricating oil. The arrangement of the device is convenient for disassembly and maintenance, and secondly, the sealing can be increased by arranging the engaging groove and the sealing clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the top view of the structure of a mini vehicle transmission shaft that is easy to replace a telescopic sleeve proposed by the utility model;

[0016] Figure 2 This is a cross-sectional structural schematic diagram of a mini vehicle transmission shaft that is easy to replace a telescopic sleeve, as proposed by the utility model;

[0017] Figure 3This is a schematic diagram of the unfolded structure of a mini vehicle transmission shaft that is convenient for replacing a telescopic sleeve proposed by the utility model;

[0018] Figure 4 The utility model provides a schematic structural diagram of a replacement mechanism for a mini vehicle transmission shaft that is convenient for replacing a telescopic sleeve.

[0019] In the figure: 1. first universal joint; 2. hollow plate; 3. first bearing; 4. connecting column; 5. hand handle; 6. first bevel gear; 7. second bevel gear; 8. threaded column; 9. second bearing; 10. threaded groove; 11. support frame; 12. slider; 13. slide rail; 14. slot clamp; 15. snap plate; 16. telescopic sleeve; 17. sliding groove; 18. sliding spline; 19. support column; 20. second universal joint; 21. rear plate; 22. threaded bolt; 23. snap groove; 24. sealing card plate; 25. soft rubber sealing plate; 26. first fixed plate; 27. second fixed plate; 28. threaded nail; 29. ​​threaded cap; 30. oil filling port; 31. closing cap. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a mini vehicle transmission shaft that is easy to replace a telescopic sleeve includes a first universal joint 1 and a replacement mechanism installed at one end of the first universal joint 1, and the replacement mechanism includes a brake assembly;

[0022] The brake assembly includes a first universal joint 1, one end of which is fixedly connected to a hollow plate 2, a first bearing 3 is fixed to the inner side of the side wall of the hollow plate 2, a connecting column 4 is fixed to the inner side of the first bearing 3, one end of the connecting column 4 is fixedly connected to a hand handle 5, the other end of the connecting column 4 is fixedly connected to a first bevel gear 6, the side wall of the first bevel gear 6 is meshingly connected to a second bevel gear 7, one end of the second bevel gear 7 is fixedly connected to a threaded column 8, and a second bearing 9 is fixed to the periphery of the other end of the threaded column 8. By rotating the hand handle 5 with external force, the connecting column 4 and the first bevel gear 6 can be driven to rotate, and through the meshing structure of the first bevel gear 6 and the second bevel gear 7, the rotation of the first bevel gear 6 can cause the second bevel gear 7 to rotate, thereby indirectly driving the threaded column 8 to rotate.

[0023] The outer periphery of the threaded column 8 is threadedly connected with a thread groove 10, a support frame 11 is fixed to the outer side of the thread groove 10, a slider 12 is fixed to the side wall of the support frame 11, the outer side of the slider 12 is slidably connected with a slide rail 13, and the other side wall of the support frame 11 is fixed with a slot clamp 14, the inner side of the slot clamp 14 is snap-connected with a snap plate 15, and one end of the snap plate 15 is provided with a telescopic sleeve 16. Through the threaded connection between the threaded column 8 and the thread groove 10, the rotation of the threaded column 8 can make the support frame 11 move, and the movement of the support frame 11 can move the slot clamp 14. Through the relative movement of the two groups of slot clamps 14, the snap plate 15 and the telescopic sleeve 16 can be snap-fitted and fixed, thereby facilitating the replacement of the telescopic sleeve 16.

[0024] A sliding groove 17 is provided on the inner wall of the telescopic sleeve 16, and a sliding spline 18 is slidably connected to the inner side of the sliding groove 17, and a support column 19 is fixedly connected to the inner side of the sliding spline 18. Through the setting of the sliding groove 17 and the sliding spline 18, the support column 19 can slide on the inner side of the telescopic sleeve 16 without affecting the transmission of the telescopic sleeve 16 by the support column 19. Embodiment 2

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment further illustrates Example 1, a second universal joint 20 is provided at the other end of the support column 19, a rear plate 21 is provided at the other end of the second universal joint 20, and a threaded bolt 22 is provided on the side wall of the rear plate 21, and the rear plate 21 can be installed and disassembled through the threaded bolt 22.

[0026] A snap-fit ​​groove 23 is formed on the outer wall of the top end of the second universal joint 20 . A sealing plate 24 is snap-fitted to the inner side of the snap-fit ​​groove 23 . A soft rubber sealing plate 25 is fixed to the outer side of the sealing plate 24 . The snap-fit ​​groove 23 and the sealing plate 24 can enhance the sealing performance.

[0027] A first fixing plate 26 is fixed to the side wall of the soft rubber sealing plate 25, a second fixing plate 27 is arranged on one side of the first fixing plate 26, a threaded nail 28 is arranged on the inner side of the second fixing plate 27, a threaded cap 29 is threadedly connected to the outer side of the threaded nail 28, an oil filling port 30 is opened on the side wall of the soft rubber sealing plate 25, a closing cap 31 is threadedly connected to the inner side of the oil filling port 30, the first fixing plate 26 and the second fixing plate 27 can be installed and disassembled by the threaded nail 28 and the threaded cap 29, and the soft rubber sealing plate 25 can be installed and disassembled indirectly, so as to prevent the soft rubber sealing plate 25 from being easily disassembled, worn and broken after long-term use, resulting in the leakage of internal lubricating oil, and the setting of the device is convenient for its disassembly and maintenance.

[0028] Working principle: First, the staff needs to rotate the hand handle 5 through external force, which can drive the connecting column 4 and the first bevel gear 6 to rotate. The rotation of the first bevel gear 6 can make the second bevel gear 7 rotate, indirectly driving the threaded column 8 to rotate. The rotation of the threaded column 8 can make the support frame 11 move, and the movement of the support frame 11 can clamp the slot clamp 14. Through the relative movement of the two sets of slot clamps 14, the clamping plate 15 and the telescopic sleeve 16 can be clamped and fixedly installed, so as to facilitate the replacement of the telescopic sleeve 16. Through the setting of the sliding groove 17 and the sliding spline 18, the support column 19 can slide on the inner side of the telescopic sleeve 16 without affecting the transmission of the telescopic sleeve 16 by the support column 19, and then the first fixed plate 26 and the second fixed plate 27 can be installed and disassembled through the threaded nail 28 and the threaded cap 29, and the soft rubber sealing plate 25 can be installed and disassembled indirectly to prevent the soft rubber sealing plate 25 from being easily disassembled, worn and cracked after long-term use, resulting in the outflow of internal lubricating oil, and the setting of the device is convenient for its disassembly and maintenance.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mini vehicle transmission shaft for facilitating replacement of a telescopic sleeve, comprising a first universal joint (1) and a replacement mechanism mounted at one end of the first universal joint (1), characterized in that: The replacement mechanism includes a brake assembly; The brake assembly comprises a first universal joint (1) having one end fixedly connected to a hollow plate (2), a first bearing (3) fixedly provided on the inner side of a side wall of the hollow plate (2), a connecting column (4) fixedly provided on the inner side of the first bearing (3), one end of the connecting column (4) fixedly connected to a hand handle (5), the other end of the connecting column (4) fixedly connected to a first bevel gear (6), the side wall of the first bevel gear (6) meshingly connected to a second bevel gear (7), one end of the second bevel gear (7) fixedly connected to a threaded column (8), and the other end of the threaded column (8) having a second bearing (9) fixedly provided on its periphery.

2. A mini vehicle transmission shaft with an easily replaceable telescopic sleeve according to claim 1, characterized in that: The outer periphery of the threaded column (8) is threadedly connected to a thread groove (10), a support frame (11) is fixed to the outer side of the thread groove (10), a slider (12) is fixed to the side wall of the support frame (11), the outer side of the slider (12) is slidably connected to a slide rail (13), a slot clamping plate (14) is fixed to the other side wall of the support frame (11), a clamping plate (15) is clamped and connected to the inner side of the slot clamping plate (14), and a telescopic sleeve (16) is provided at one end of the clamping plate (15).

3. The mini vehicle transmission shaft with easy replacement of telescopic sleeve according to claim 1, characterized in that: The inner wall of the telescopic sleeve (16) is provided with a sliding groove (17), the inner side of the sliding groove (17) is slidably connected with a sliding spline (18), and the inner side of the sliding spline (18) is fixedly connected with a support column (19).

4. The mini vehicle transmission shaft with easy replacement of telescopic sleeve according to claim 3, characterized in that: A second universal joint (20) is disposed at the other end of the support column (19), a rear plate (21) is disposed at the other end of the second universal joint (20), and a threaded bolt (22) is disposed on the side wall of the rear plate (21).

5. The mini vehicle transmission shaft with easy replacement of telescopic sleeve according to claim 4, characterized in that: A snap-fit ​​groove (23) is provided on the outer side wall of the top end of the second universal joint (20), a sealing clamping plate (24) is clamped inside the snap-fit ​​groove (23), and a soft rubber sealing plate (25) is fixed outside the sealing clamping plate (24).

6. The mini vehicle transmission shaft with easy replacement of telescopic sleeve according to claim 5, characterized in that: A first fixing plate (26) is fixed to the side wall of the soft rubber sealing plate (25); a second fixing plate (27) is arranged on one side of the first fixing plate (26); a threaded nail (28) is arranged on the inner side of the second fixing plate (27); a threaded cap (29) is threadedly connected to the outer side of the threaded nail (28); an oil filling port (30) is opened on the side wall of the soft rubber sealing plate (25); a closing cap (31) is threadedly connected to the inner side of the oil filling port (30).

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