Outer cylinder assembly of shock absorber

Abstract

The utility model belongs to the technical field of shock absorber accessories, and particularly relates to a shock absorber outer cylinder assembly which comprises an outer cylinder, an inner cylinder and an outer sleeve. The inner wall of the small end of the oil seal seat is provided with connecting internal threads, the oil seal seat is screwed into one end of the outer cylinder through matching of the connecting external threads and the connecting internal threads, and the outer wall of the large end of the oil seal seat is provided with a mounting ring groove; the mud scraping ring is of a spiral structure, is clamped in the mounting ring groove and is used for solving the problems that when an outer barrel and an oil seal seat of an existing shock absorber are integrally arranged at the end part of the outer barrel, the whole shock absorber needs to be detached and is inconvenient to detach when the interior of the outer barrel is maintained; and the mud scraping ring is easy to loosen and fall off from the oil seal seat.

Description

Technical Field

[0001] This utility model belongs to the technical field of shock absorber accessories, specifically relating to a shock absorber outer cylinder assembly. Background Technology

[0002] Shock absorbers are used to suppress the oscillations when the spring absorbs shock and the impact from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the chassis and body, thereby improving the ride smoothness of the car. When driving over uneven roads, although the shock-absorbing spring can filter the vibrations of the road surface, the spring itself will still have reciprocating motion. The shock absorber is used to suppress this spring bounce.

[0003] Existing shock absorbers have straight outer cylinders with smooth inner and outer walls. They are equipped with oil seal seats at the ends and mud scraper rings on the oil seal seats. However, the oil seal seats are integrated into the ends of the existing shock absorber outer cylinders, which means that the entire shock absorber needs to be removed when performing maintenance on the inside of the outer cylinder, which is inconvenient. In addition, the mud scraper rings are also prone to loosening and falling off the oil seal seats. Utility Model Content

[0004] Based on the problems mentioned in the background art above, this utility model provides a shock absorber outer cylinder assembly to solve the problems of existing shock absorber outer cylinders where the oil seal seat is integrated into the end of the outer cylinder, which requires the entire shock absorber to be removed when performing maintenance on the inside of the outer cylinder, making disassembly inconvenient; and the mud scraper ring is also prone to loosening and falling off from the oil seal seat.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A shock absorber outer cylinder assembly, comprising:

[0007] The outer cylinder has an external thread on one end of its outer wall.

[0008] The oil seal seat has an internal thread on the inner wall of its small end, and is screwed into one end of the outer cylinder through the engagement of the external thread and the internal thread. The outer wall of the large end of the oil seal seat has an installation ring groove.

[0009] The mud scraper ring has a spiral structure and is fitted into the mounting ring groove.

[0010] Based on the above technical solution, the present invention has made the following improvements:

[0011] Furthermore, a first groove is provided at the root of the external thread of the outer cylinder, and a bevel is provided on the side of the first groove near the middle of the outer cylinder. A second groove is provided at the front end of the internal thread of the oil seal seat. A locking block is jointly engaged in the first groove and the second groove, and the locking block is made of polyethylene.

[0012] Furthermore, the scraper ring is divided into upper and lower rings, which are smoothly connected by a bend. The diameter of the upper ring is smaller than that of the lower ring.

[0013] Furthermore, the inner wall of the other end of the outer cylinder is provided with an internal thread, and the outer wall of the end of the outer cylinder with the internal thread is provided with a positioning ring groove.

[0014] The beneficial effects of this utility model are:

[0015] 1. By using the external and internal connecting threads, slot one, slot two, and locking block combination, the oil seal seat can be threaded onto one end of the outer cylinder using the external and internal connecting threads. This allows the oil seal seat to be removed from the end of the outer cylinder only when maintenance is needed inside the outer cylinder, without having to remove the entire shock absorber from the motorcycle front fork. Furthermore, the slot one, slot two, and locking block combination can stabilize the oil seal seat screwed into one end of the outer cylinder, preventing it from loosening at the end of the outer cylinder due to vibration.

[0016] 2. By dividing the mud scraper ring into upper and lower rings, and with the upper ring having a smaller diameter than the lower ring, the smaller ring can maintain a certain clamping force after the mud scraper ring is inserted into the mounting groove, thus preventing the mud scraper ring from loosening and falling off the oil seal seat. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a structural diagram of the outer cylinder in the shock absorber outer cylinder assembly of this utility model;

[0019] Figure 2 This is a cross-sectional view of the outer cylinder of the shock absorber outer cylinder assembly of this utility model;

[0020] Figure 3 for Figure 1 Enlarged view of region A in the middle;

[0021] Figure 4 This is a structural diagram of the mud scraper ring in the outer cylinder assembly of a shock absorber according to this utility model;

[0022] Figure 5 This is a structural diagram of the oil seal seat in the outer cylinder assembly of a shock absorber according to this utility model;

[0023] Figure 6 This is a cross-sectional view of the oil seal seat in the outer cylinder assembly of a shock absorber according to this utility model;

[0024] Figure 7 This is an assembly diagram of the outer cylinder assembly of a shock absorber according to the present invention.

[0025] The attached diagram is labeled as follows:

[0026] 101. Outer cylinder; 102. External connecting thread; 103. Internal thread; 104. Positioning ring groove; 2. Scraper ring; 201. Bend; 301. Oil seal seat; 302. Mounting ring groove; 303. Internal connecting thread; 401. Slot 1; 402. Slot 2. Detailed Implementation

[0027] like Figures 1 to 7 As shown, a shock absorber outer cylinder assembly includes:

[0028] The outer cylinder 101 has an external thread 102 on one end of its outer wall.

[0029] The oil seal seat 301 has an internal thread 303 on the inner wall of its small end. The oil seal seat 301 is screwed into one end of the outer cylinder 101 by the engagement of the external thread 102 and the internal thread 303. This allows the oil seal seat 301 to be removed from the end of the outer cylinder 101 when maintenance is required inside the outer cylinder 101, without having to remove the entire shock absorber from the motorcycle front fork.

[0030] A slot 401 is provided at the root of the external thread 102 of the outer cylinder 101. A bevel is provided on the side of the slot 401 near the middle of the outer cylinder 101. A slot 402 is provided at the front end of the internal thread 303 of the oil seal seat 301. A locking block is jointly engaged in both slots 401 and 402. The locking block is made of polyethylene. Its low-density polyethylene (LDPE) is flexible, while its high-density polyethylene (HDPE) is slightly more rigid and resistant to repeated bending and elastic deformation. When the oil seal seat 301 is screwed onto the end of the outer cylinder 101, so that the positions of the first slot 401 and the second slot 402 are aligned, the locking block is inserted along the bevel of the first slot 401 and the port of the second slot 402, so that the locking block is simultaneously locked in the first slot 401 and the second slot 402. This can stabilize the oil seal seat 301 screwed into one end of the outer cylinder 101 and prevent the oil seal seat 301 from rotating and loosening at the end of the outer cylinder 101 under the influence of vibration.

[0031] The outer wall of the large end of the oil seal seat 301 is provided with an installation ring groove 302 and a mud scraper ring 2. The mud scraper ring 2 is divided into upper and lower rings, which are smoothly connected by a bending part 201, so that the mud scraper ring 2 forms a spiral structure. The diameter of the upper ring of the mud scraper ring 2 is smaller than that of the lower ring. The mud scraper ring 2 is stuck in the installation ring groove 302. When the mud scraper ring 2 is stuck in the installation ring groove 302, the smaller ring of the mud scraper ring 2 can maintain a certain contraction clamping force and be clamped on the groove wall of the installation ring groove 302, thereby preventing the mud scraper ring 2 from loosening and falling off the oil seal seat 301.

[0032] The inner wall of the other end of the outer cylinder 101 is provided with an internal thread 103. The outer wall of the end of the outer cylinder 101 with the internal thread 103 is provided with a positioning ring groove 104. The internal thread 103 can be used to assemble the screw plug, so that the screw plug can be assembled on the other end of the outer cylinder 101. A retaining ring or a sealing ring can be locked in the positioning ring groove 104.

[0033] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A shock absorber outer cylinder assembly, characterized in that: include: The outer cylinder (101) has an external thread (102) on one end of its outer wall. Oil seal seat (301), the inner wall of the small end of the oil seal seat (301) is provided with a connecting internal thread (303), the oil seal seat (301) is screwed into one end of the outer cylinder (101) through the cooperation of the connecting external thread (102) and the connecting internal thread (303), and the outer wall of the large end of the oil seal seat (301) is provided with an installation ring groove (302). Scraper ring (2), the scraper ring (2) is a spiral structure, the scraper ring (2) is locked in the mounting ring groove (302).

2. The shock absorber outer cylinder assembly according to claim 1, characterized in that: The outer cylinder (101) has a slot 1 (401) at the root of the external thread (102). The slot 1 (401) has a bevel on the side near the middle of the outer cylinder (101). The oil seal seat (301) has a slot 2 (402) at the front end of the internal thread (303). The slot 1 (401) and the slot 2 (402) are fitted with a locking block, which is made of polyethylene.

3. The shock absorber outer cylinder assembly according to claim 1, characterized in that: The scraper ring (2) is divided into upper and lower rings, which are smoothly connected by a bend (201). The diameter of the upper ring of the scraper ring (2) is smaller than that of the lower ring.

4. The shock absorber outer cylinder assembly according to claim 1, characterized in that: The inner wall of the other end of the outer cylinder (101) is provided with an internal thread (103), and the outer wall of the end of the outer cylinder (101) with the internal thread (103) is provided with a positioning ring groove (104).

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