Novel transmission shaft assembly of spline connection gear

Abstract

The novel transmission shaft assembly comprises a main body, the right end of the main body is fixedly connected with a spline sleeve, the interior of the spline sleeve is connected with a sliding block in a sliding mode, the right side of the sliding block is fixedly connected with a spline shaft, and the right end of the spline shaft penetrates out of the spline sleeve. The spline shaft can axially and transversely move in the spline sleeve, the sliding block and the stop ring are used for preventing falling off and limiting, axial rotation of the sliding block and the spline shaft can be prevented through limiting of the guide sliding block and the guide sliding groove, the guide wheel is matched to reduce friction and abrasion during transverse movement, meanwhile, the first ball and the second ball are arranged, and the service life of the spline shaft is prolonged. The stability of the spline housing and the spline shaft during relative telescopic sliding can be guaranteed, abnormal sound cannot be generated after long-term use due to small friction, the driving performance is guaranteed, potential safety hazards brought to automobile driving are avoided, and the service life of the transmission shaft assembly can be effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft technology, specifically to a novel transmission shaft assembly with splined connecting gears. Background Technology

[0002] The existing telescopic steering drive shaft assemblies mainly have the following structural forms: one is that four open slots are evenly distributed at the end of the spline sleeve, and a steel band clamp is used to hold it tightly, so that the spline shaft can freely extend and retract within the spline sleeve; another is that a nylon layer is coated on the outer surface of the spline shaft or the inner surface of the spline sleeve to ensure the fit clearance of the sliding spline; and yet another is that a steel ball bearing structure is used, and the spline fit clearance is satisfied by adjusting the diameter of the steel balls during assembly.

[0003] Traditional splined shafts can freely extend and retract within the splined sleeve, providing a certain amount of sliding resistance and ensuring safe and reliable performance. However, after a certain period of time, the sliding splines will gradually wear down, increasing the clearance and causing abnormal noise, which directly affects driving performance and poses a safety hazard to the vehicle. To address this, we propose a novel splined gear transmission shaft assembly to solve the problems mentioned in the background section. Utility Model Content

[0004] The purpose of this utility model is to provide a novel transmission shaft assembly with splined gear connection to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel transmission shaft assembly with splined gears, comprising a main body, a splined sleeve fixedly connected to the right end of the main body, a sliding block slidably connected inside the splined sleeve, a splined shaft fixedly connected to the right side of the sliding block, the right end of the splined shaft extending through to the outside of the splined sleeve, symmetrically installed blocking rings for limiting the sliding block inside the splined sleeve, and a plurality of first ball bearings surrounding the outer side of the sliding block.

[0006] Furthermore, an installation slide is fixedly connected to the outer side of the blocking ring, and symmetrical installation grooves are provided on the inner wall of the spline sleeve. A guide rod is fixedly connected to the left side of the inner wall of the installation groove, and the two installation slides are slidably connected to the surfaces of the two guide rods along the axial direction. The installation slides are fixed by the first bolt on the outer side of the spline sleeve.

[0007] Furthermore, guide sliders are symmetrically installed on the outer side of the sliding block, and guide grooves adapted to the guide sliders are opened on the inner wall of the spline sleeve. Guide wheels are installed in the grooves on the outer side of the guide sliders. The guide sliders and guide grooves can limit the sliding block, prevent it from rotating axially, and ensure its stability during telescopic movement. The guide wheels can reduce the friction and wear generated by the guide sliders during movement.

[0008] Furthermore, a sealing plate is installed at the opening on the right side of the spline sleeve. The sealing plate is fixedly connected to the spline sleeve by a second bolt on it. The sealing plate can provide a dustproof seal from the opening on the right side of the spline sleeve, preventing the infiltration of external debris and dust, which would affect the service life.

[0009] Furthermore, a plurality of second balls are mounted around the inner side of the blocking ring. The second balls are in contact with the surface of the spline shaft, and the first balls are in contact with the inner wall of the spline sleeve. The second balls can reduce the friction and wear between the surface of the spline shaft and the inner side of the blocking ring when the spline shaft moves.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] The spline shaft of this invention can move axially laterally within the spline sleeve. A sliding block and a retaining ring act as anti-disengagement and limiting mechanisms. The guide slider and guide groove prevent axial rotation of the sliding block and spline shaft. A guide wheel reduces friction and wear during lateral movement. The inclusion of a first ball bearing and a second ball bearing ensures the stability of the spline sleeve and spline shaft during relative telescopic sliding. The low friction prevents abnormal noise even after long-term use, ensuring driving performance, avoiding safety hazards to the vehicle, and effectively improving the service life of the drive shaft assembly. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a front view sectional view of the present invention;

[0014] Figure 3 This is a side view sectional view of the spline sleeve and sliding block of this utility model;

[0015] Figure 4 This is a side view of the blocking ring and mounting sleeve of this utility model.

[0016] In the diagram: 1. Main body, 2. Spline sleeve, 3. Sliding block, 4. Spline shaft, 5. Blocking ring, 6. First ball bearing, 7. Mounting sleeve, 8. Mounting groove, 9. Guide rod, 10. First bolt, 11. Guide slider, 12. Guide groove, 13. Guide wheel, 14. Sealing plate, 15. Second bolt, 16. Second ball bearing. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 A novel transmission shaft assembly with splined gears includes a main body 1. A splined sleeve 2 is fixedly connected to the right end of the main body 1. A sliding block 3 is slidably connected inside the splined sleeve 2. A splined shaft 4 is fixedly connected to the right side of the sliding block 3. The right end of the splined shaft 4 extends through to the outside of the splined sleeve 2. A blocking ring 5 for limiting the sliding block 3 is symmetrically installed inside the splined sleeve 2. A plurality of first ball bearings 6 are installed around the outside of the sliding block 3.

[0019] Specifically, a mounting sleeve 7 is fixedly connected to the outer side of the blocking ring 5, and mounting grooves 8 are symmetrically opened on the inner wall of the spline sleeve 2. A guide rod 9 is fixedly connected to the left side of the inner wall of the mounting groove 8. The two mounting sleeves 7 are slidably connected to the surfaces of the two guide rods 9 along the axial direction. The mounting sleeves 7 are fixed by the first bolt 10 on the outer side of the spline sleeve 2. The blocking ring 5 is fixed by bolts, which can be easily disassembled and replaced when damaged, thereby extending the service life of the drive shaft assembly.

[0020] Specifically, guide sliders 11 are symmetrically installed on the outer side of the sliding block 3. A guide groove 12 adapted to the guide slider 11 is opened on the inner wall of the spline sleeve 2. A guide wheel 13 is installed in the groove on the outer side of the guide slider 11. The guide slider 11 and the guide groove 12 can limit the sliding block 3, prevent it from rotating axially, and ensure its stability when it moves in extension and retraction. The guide wheel 13 can reduce the friction and wear generated by the guide slider 11 when it moves.

[0021] Specifically, a sealing plate 14 is installed at the opening on the right side of the spline sleeve 2. The sealing plate 14 is fixedly connected to the spline sleeve 2 by the second bolt 15 on it. The sealing plate 14 can provide dustproof sealing from the opening on the right side of the spline sleeve 2, which can prevent the infiltration of external debris and dust, thus affecting the service life.

[0022] Specifically, a number of second balls 16 are installed around the inner side of the retaining ring 5. The second balls 16 are in contact with the surface of the spline shaft 4, and the first balls 6 are in contact with the inner wall of the spline sleeve 2. The second balls 16 can reduce the friction and wear between the surface of the spline shaft 4 and the inner side of the retaining ring 5 when the spline shaft 4 moves.

[0023] The splined shaft 4 of this invention can move axially within the splined sleeve 2. The sliding block 3 and the blocking ring 5 serve as anti-disengagement and limiting mechanisms. The axial rotation of the sliding block 3 and the splined shaft 4 is prevented by the limiting mechanism of the guide slider 11 and the guide groove 12. The guide wheel 13 is used to reduce friction and wear during lateral movement. The first ball bearing 6 and the second ball bearing 16 are provided to ensure the stability of the splined sleeve 2 and the splined shaft 4 during relative telescopic sliding. The low friction ensures that no abnormal noise will be generated after long-term use, thus ensuring driving performance, avoiding safety hazards to the vehicle, and effectively improving the service life of the drive shaft assembly.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel transmission shaft assembly with splined gear connection, comprising a main body (1), characterized in that: A spline sleeve (2) is fixedly connected to the right end of the main body (1). A sliding block (3) is slidably connected inside the spline sleeve (2). A spline shaft (4) is fixedly connected to the right side of the sliding block (3). The right end of the spline shaft (4) extends through to the outside of the spline sleeve (2). A blocking ring (5) for limiting the sliding block (3) is symmetrically installed inside the spline sleeve (2). A number of first balls (6) are installed around the outside of the sliding block (3).

2. The novel transmission shaft assembly with splined gears according to claim 1, characterized in that: The outer side of the blocking ring (5) is fixedly connected to the mounting sleeve (7), and the inner wall of the spline sleeve (2) is symmetrically provided with mounting grooves (8). The left side of the inner wall of the mounting groove (8) is fixedly connected to the guide rod (9). The two mounting sleeves (7) are slidably connected to the surfaces of the two guide rods (9) along the axial direction. The mounting sleeves (7) are fixed by the first bolt (10) on the outer side of the spline sleeve (2).

3. The novel transmission shaft assembly of spline-connected gears according to claim 2, characterized in that: The sliding block (3) is symmetrically equipped with guide sliders (11), and the inner wall of the spline sleeve (2) is provided with guide grooves (12) that are compatible with the guide sliders (11). The guide wheel (13) is installed in the groove on the outer side of the guide slider (11).

4. The novel transmission shaft assembly of spline-connected gears according to claim 3, characterized in that: A sealing plate (14) is installed at the opening on the right side of the spline sleeve (2), and the sealing plate (14) is fixedly connected to the spline sleeve (2) by a second bolt (15) thereon.

5. A novel transmission shaft assembly with splined gears according to claim 4, characterized in that: The inner side of the blocking ring (5) is surrounded by a plurality of second balls (16), the second balls (16) are in contact with the surface of the spline shaft (4), and the first balls (6) are in contact with the inner wall of the spline sleeve (2).

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