Shaft sleeve for automobile transmission shaft

Abstract

The shaft sleeve for the automobile transmission shaft comprises a telescopic rod, a telescopic sleeve and a piston cylinder, a plurality of fixing blocks are arranged on the outer wall of the telescopic rod, a piston is fixedly welded to the lower end of the telescopic rod, a first through hole is formed in the center of the telescopic sleeve, and a first circular ring is fixedly welded to the lower end of the telescopic sleeve. Four screw rods are arranged on the periphery of the first circular ring, a second through hole is formed in the center of the piston cylinder, a lubricating nipple is fixedly installed on the surface of the upper end of the piston cylinder, a second circular ring is fixedly welded to the upper end of the piston cylinder, four small through holes are formed in the periphery of the second circular ring, and a fixing ring is fixedly welded to the lower end of the piston cylinder; the transmission shaft is simple in structure, convenient to manufacture and machine, capable of reducing abrasion, small in fit clearance, good in lubricating effect, capable of reducing maintenance and replacement frequency and long in service life, and the damping function of the transmission shaft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a shaft sleeve for an automobile transmission shaft. Background Art

[0002] The automobile drive shaft is a component that connects the gearbox and the drive axle, and ultimately transmits the power generated by the engine to the wheels to drive the car. Reducing the weight of the transmission system can reduce energy consumption during operation and improve the efficiency of the engine.

[0003] During long-term use, the friction between the current automobile drive shaft sleeve and the drive shaft will cause wear, which will affect the performance and life of the drive shaft. The sleeve needs to be well sealed to prevent lubricating oil leakage or the entry of dust and impurities, but the current sealing technology may have the risk of leakage, affecting the service life of the sleeve. In addition, the friction between the sleeve and the drive shaft when the drive shaft is running may generate noise, affecting the comfort of the vehicle. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a shaft sleeve for an automobile transmission shaft, which solves the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shaft sleeve for an automobile transmission shaft, comprising a telescopic rod, a telescopic sleeve, and a piston cylinder, the outer wall of the telescopic rod is provided with a plurality of fixing blocks, and a piston is fixedly welded at the lower end of the telescopic rod, a first through hole is opened in the center of the telescopic sleeve, and a first circular ring is fixedly welded at the lower end of the telescopic sleeve, four screws are arranged around the first circular ring, a second through hole is opened in the center of the piston cylinder, and a fuel nozzle is fixedly installed on the upper end surface of the piston cylinder, a second circular ring is fixedly welded at the upper end of the piston cylinder, four small through holes are arranged around the second circular ring, and a fixing ring is fixedly welded at the lower end of the piston cylinder.

[0006] Preferably, the piston is in the shape of an inverted cone, and a sealing ring is movably sleeved on the lower end of the cone.

[0007] Preferably, a plurality of limiting blocks are provided around the inner wall of the first through hole, and are alternately and slidably matched with the outer wall fixing blocks of the telescopic rod.

[0008] Preferably, the first ring is the same size as the second ring, and the outer walls of the four screws around the first ring are provided with external threads, the inner walls of the four small through holes around the second ring are provided with internal threads, and the four screws correspond to the four small through holes and are connected by movable threads.

[0009] Preferably, the top end of the piston cylinder is movably sleeved inside the telescopic sleeve, and the bottom end of the oiling nozzle penetrates the inner wall of the piston cylinder, and the upper end of the oiling nozzle is movably sleeved with a cap.

[0010] Compared with the prior art, the utility model provides a shaft sleeve for an automobile transmission shaft, which has the following beneficial effects:

[0011] The utility model discloses a kind of novel shaft sleeve telescopic rod, and the positioning block of the telescopic rod is slidably matched with the limiting block inside the telescopic sleeve, and the matching clearance is small, and the lubricating liquid is allowed to enter the piston cylinder through the oiling nozzle, which can reduce the lubricating liquid from contacting the air outside and mixing with particles such as dust and impurities, and can perfectly preserve the problem of lubricating oil leakage. In addition, during the rotation of the transmission shaft, the piston at the lower end of the telescopic rod cooperates with the lubricating oil, which can reduce the noise generated during the movement and greatly improve the shock absorption effect of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the telescopic rod structure of the utility model.

[0014] In the figure: 1. telescopic rod; 2. fixed block; 3. piston; 4. telescopic sleeve; 5. first through hole; 6. first circular ring; 7. screw rod; 8. piston cylinder; 9. second through hole; 10. oiling nozzle; 11. second circular ring; 12. small through hole; 13. fixed ring; 14. sealing ring; 15. limit block. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1-2A shaft sleeve for an automobile transmission shaft comprises a telescopic rod 1, a telescopic sleeve 4 and a piston cylinder 8. The outer wall of the telescopic rod 1 is provided with a plurality of fixing blocks 2, and a piston 3 is fixedly welded at the lower end of the telescopic rod 1. A first through hole 5 is provided in the center of the telescopic sleeve 4, and a first circular ring 6 is fixedly welded at the lower end of the telescopic sleeve 4, four screw rods 7 are provided around the first circular ring 6, a second through hole 9 is provided in the center of the piston cylinder 8, and a refueling nozzle 10 is fixedly installed on the upper end surface of the piston cylinder 8, a second circular ring 11 is fixedly welded at the upper end of the piston cylinder 8, four small through holes 12 are provided around the second circular ring 11, and a fixing ring 13 is fixedly welded at the lower end of the piston cylinder 8.

[0017] Furthermore, the piston 3 is in the shape of an inverted cone, and a sealing ring 14 is movably sleeved on the lower end of the cone.

[0018] Furthermore, a plurality of limiting blocks 15 are disposed around the inner wall of the first through hole 5 , and are alternately and slidably matched with the outer wall fixing blocks 2 of the telescopic rod 1 .

[0019] Furthermore, the first circular ring 6 and the second circular ring 11 are of the same size, and the outer walls of the four screws 7 around the first circular ring 6 are provided with external threads, the inner walls of the four small through holes 12 around the second circular ring 11 are provided with internal threads, and the four screws 7 correspond to the four small through holes 12 and are connected by movable threads.

[0020] Furthermore, the top end of the piston cylinder 8 is movably sleeved inside the telescopic sleeve 4, and the bottom end of the oiling nozzle 10 penetrates the inner wall of the piston cylinder 8, and the upper end of the oiling nozzle 10 is movably sleeved with a cap.

[0021] Working principle: The upper end of the telescopic rod 1 is fixedly installed on the end of the transmission shaft, and the piston 3 at the lower end of the telescopic rod 1 is movably sleeved inside the piston cylinder 8, and is threadedly fixed through four screws 7 and four small through holes 12. Lubricating oil is injected into the inner wall of the piston cylinder 8 through the oil nozzle 10. When the rotating shaft rotates, the fixed block 2 drives the limit block 15 in the center of the telescopic sleeve 4 to rotate. If the vehicle passes through a bumpy journey, the telescopic rod 1 drives the piston 3 to contract on the inner wall of the piston cylinder 8. The sealing ring 14 installed on the piston 3 cooperates with the lubricating oil to reduce noise and greatly improve the shock absorption effect of the vehicle.

[0022] 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 shaft sleeve for an automobile transmission shaft, comprising a telescopic rod (1), a telescopic sleeve (4), and a piston cylinder (8), characterized in that: The outer wall of the telescopic rod (1) is provided with a plurality of fixing blocks (2), and a piston (3) is fixedly welded to the lower end of the telescopic rod (1); a first through hole (5) is opened in the center of the telescopic sleeve (4), and a first circular ring (6) is fixedly welded to the lower end of the telescopic sleeve (4), and four screw rods (7) are arranged around the first circular ring (6); a second through hole (9) is opened in the center of the piston cylinder (8), and a refueling nozzle (10) is fixedly installed on the upper end surface of the piston cylinder (8); a second circular ring (11) is fixedly welded to the upper end of the piston cylinder (8), and four small through holes (12) are arranged around the second circular ring (11), and a fixing ring (13) is fixedly welded to the lower end of the piston cylinder (8).

2. The shaft sleeve for automobile transmission shaft according to claim 1, characterized in that: The piston (3) is in the shape of an inverted cone, and a sealing ring (14) is movably sleeved on the lower end of the cone.

3. The shaft sleeve for automobile transmission shaft according to claim 1, characterized in that: A plurality of limit blocks (15) are arranged around the inner wall of the first through hole (5), and are alternately and slidably matched with the outer wall fixing blocks (2) of the telescopic rod (1).

4. The shaft sleeve for automobile transmission shaft according to claim 1, characterized in that: The first circular ring (6) and the second circular ring (11) are of the same size, and the outer walls of the four screw rods (7) around the first circular ring (6) are provided with external threads, and the inner walls of the four small through holes (12) around the second circular ring (11) are provided with internal threads, and the four screw rods (7) and the four small through holes (12) correspond to each other and are movably threadedly connected.

5. The shaft sleeve for automobile transmission shaft according to claim 1, characterized in that: The top end of the piston cylinder (8) is movably sleeved inside the telescopic sleeve (4), and the bottom end of the oiling nozzle (10) penetrates the inner wall of the piston cylinder (8), and the upper end of the oiling nozzle (10) is movably sleeved with a cover cap.

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