Reciprocating type adjustable rear shock absorber

Abstract

The invention provides a reciprocating type adjustable rear shock absorber, and relates to the technical field of electric two-wheeled vehicles, the reciprocating type adjustable rear shock absorber comprises a shock absorber main body, an adjusting seat is sleeved with a base, the upper end of the base abuts against the lower end of a spring seat, a reciprocating adjusting ring is rotated to enable the base to drive the adjusting seat to rotate, and the adjusting seat is driven by the spring seat to rotate. And therefore, different gears on the adjusting seat are matched with the adjusting gear of the spring. According to the reciprocating type adjustable rear shock absorber, after the reciprocating adjusting ring rotates, the base can be driven to rotate, then the adjusting base is made to rotate, in this way, different gears on the adjusting base are matched with the adjusting gears of the spring, height adjustment of the adjusting base is achieved, then height adjustment of the spring base is achieved, and adjustment of the shock absorber is achieved; due to the fact that the handle is arranged on the reciprocating adjusting ring, when the shock absorber is adjusted, no extra tool is needed, and the efficiency of adjusting the shock absorber is improved.

Description

Technical Field

[0001] This invention relates to the technical field of electric two-wheeled vehicles, and in particular to a reciprocating adjustable rear shock absorber. Background Technology

[0002] Electric vehicle users are demanding more and more comfort, leading to an increasing use of adjustable rear shock absorbers.

[0003] Traditional adjustable rear shock absorbers are difficult to adjust and require special tools, making adjustment very inconvenient. Some car models cannot use adjustable shock absorbers due to their design, and users cannot get a better experience.

[0004] Currently, there are two types of adjustable structures on the market: one is externally adjustable, which is difficult to adjust and requires special tools; the other is concealed adjustable, which requires more space and is also more difficult to adjust. Summary of the Invention

[0005] The purpose of this invention is to provide a reciprocating adjustable rear shock absorber to alleviate the technical problems of time-consuming and laborious adjustment of adjustable rear shock absorbers and poor user experience.

[0006] The present invention provides a reciprocating adjustable rear shock absorber, including a shock absorber body, a shock absorber spring and a spring seat sleeved on the shock absorber body, and the lower end of the shock absorber spring abutting against the upper end of the spring seat; At least two spring adjustment positions are provided on the shock absorber body; an adjustment seat is sleeved on the shock absorber body, and the lower end of the adjustment seat abuts against the upper end of the spring adjustment position. A base is fitted onto the adjusting seat, and a reciprocating adjusting ring is fitted onto the base; multiple rigid gear teeth are provided on the periphery of the base, and multiple pawls that cooperate with the rigid gear teeth are provided on the reciprocating adjusting ring; Multiple outward protrusions are provided on the reciprocating adjusting ring, and the outward protrusions form handles for rotating the reciprocating adjusting ring; The upper end of the base abuts against the lower end of the spring seat. By rotating the reciprocating adjustment ring, the base drives the adjustment seat to rotate, thereby enabling different positions on the adjustment seat to match the spring adjustment positions and adjust the position of the adjustment seat.

[0007] In an optional embodiment, the lower end of the adjusting seat is provided with a plurality of stop grooves for cooperating with the spring adjusting position, and two adjacent stop grooves are connected by an arc-shaped surface. In an optional embodiment, the upper end of the adjusting seat is provided with a plurality of mounting grooves, and the inner side of the base is provided with an inner protrusion that mates with the mounting grooves; the base and the adjusting seat rotate synchronously by means of the inner protrusion being fitted into the mounting grooves.

[0008] In an optional embodiment, a lower support platform is provided on the outer side of the base, and the rigid gear teeth are provided on the upper end of the lower support platform; the lower support platform is used to support the reciprocating adjustment ring; and multiple drainage grooves are provided on the lower support platform.

[0009] In an optional embodiment, a lower annular baffle is provided at the lower end of the reciprocating adjusting ring, and the lower annular baffle covers the lower support platform. In an optional embodiment, the upper end of the spring seat is provided with an annular protrusion, and the annular protrusion is sleeved on the shock absorber body; the lower end of the shock-absorbing spring is sleeved on the annular protrusion and abuts against the spring seat.

[0010] In an optional embodiment, the lower end of the spring seat is provided with a first groove, and the upper end of the base is fitted into the first groove; The first groove causes the lower end of the spring seat to form a lower annular protrusion, which is fitted into the gap between the base and the shock absorber body; The lower end of the spring seat is provided with a second groove, and the upper end of the reciprocating adjusting ring forms an upper annular protrusion that matches the second groove.

[0011] In an optional embodiment, the reciprocating adjusting ring is provided with a plurality of mounting ports, and a pawl is provided in each of the mounting ports.

[0012] In an optional embodiment, the base is provided with a lower annular groove, and a stop mark is provided in the lower annular groove; A lower marking seat is provided on the main body of the shock absorber, and an upper annular groove is provided on the lower marking seat. The lower end of the base is fitted into the upper annular groove. A side opening communicating with the upper annular groove is provided on the lower indicator seat, and the side opening is used to observe the gear position indicator.

[0013] In an optional embodiment, an inner positioning groove matching the spring adjustment position is provided in the lower marking seat; a snap-fit ​​protrusion is provided in the upper annular groove, the snap-fit ​​protrusion snaps into the lower annular groove; and a guide slope is provided on the snap-fit ​​protrusion, the guide slope guides the base.

[0014] The reciprocating adjustable rear shock absorber provided by this invention, when its reciprocating adjustment ring rotates, can drive the base to rotate, thereby rotating the adjustment seat. In this way, different positions on the adjustment seat cooperate with the spring adjustment positions to adjust the height of the adjustment seat, thereby adjusting the height of the spring seat and thus adjusting the shock absorber. Since a handle is provided on the reciprocating adjustment ring, no additional tools are needed when adjusting the shock absorber, thus improving the efficiency of adjusting the shock absorber. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the reciprocating adjustable rear shock absorber provided in an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the connection between the adjusting seat and the main body of the reciprocating adjustable rear shock absorber. Figure 3 for Figure 1 The diagram shows the connection between the reciprocating adjusting ring, base, and spring seat of the reciprocating adjustable rear shock absorber. Figure 4 for Figure 3 The diagram shows a longitudinal section of the reciprocating adjustable rear shock absorber, connecting the reciprocating adjusting ring, base, and spring seat. Figure 5 for Figure 1 The schematic diagram of the structure of the base of the reciprocating adjustable rear shock absorber shown is shown in the structural schematic diagram. Figure 6 for Figure 1 The schematic diagram of the reciprocating adjustable rear shock absorber shown is a schematic diagram of the reciprocating adjustment ring. Figure 7 for Figure 1 A schematic diagram of the longitudinal section of the spring seat of the reciprocating adjustable rear shock absorber is shown. Figure 8 for Figure 1 The diagram shows the connection between the lower indicator seat and the spring adjustment position of the reciprocating adjustable rear shock absorber.

[0017] Icons: 100-Shock absorber body; 200-Spring seat; 201-Annular protrusion; 202-Lower annular protrusion; 203-First groove; 204-Second groove; 300-Reciprocating adjustment ring; 301-Pawl; 302-Handle; 303-Mounting port; 304-Upper annular protrusion; 305-Lower annular baffle; 400-Base; 401-Rigid gear tooth; 402-Lower support platform; 403-Water leakage groove; 404-Inner protrusion; 405-Lower annular groove; 406-Gear position indicator; 500-Adjustment seat; 501-Assembly groove; 502-Gear position groove; 600-Spring adjustment gear; 700-Lower indicator seat; 701-Inner positioning groove; 702-Upper annular groove; 703-Side opening; 704-Snap-fit ​​protrusion; 705-Guide slope. Detailed Implementation

[0018] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0019] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0022] The technical solution of this application will now be clearly and completely described with reference to the accompanying drawings.

[0023] Example Reference Figures 1-8The present invention provides a reciprocating adjustable rear shock absorber, including a shock absorber body 100, a shock absorber spring and a spring seat 200 sleeved on the shock absorber body 100, and the lower end of the shock absorber spring abutting against the upper end of the spring seat 200. At least two spring adjustment positions 600 are provided on the shock absorber body 100; an adjustment seat 500 is sleeved on the shock absorber body 100, and the lower end of the adjustment seat 500 abuts against the upper end of the spring adjustment position 600. A base 400 is fitted onto the adjusting seat 500, and a reciprocating adjusting ring 300 is fitted onto the base 400; a plurality of rigid gear teeth 401 are provided on the periphery of the base 400, and a plurality of pawls 301 that cooperate with the rigid gear teeth 401 are provided on the reciprocating adjusting ring 300. A plurality of outward protrusions are provided on the reciprocating adjustment ring 300, and the outward protrusions form a handle 302 for rotating the reciprocating adjustment ring 300; The upper end of the base 400 abuts against the lower end of the spring seat 200. By rotating the reciprocating adjustment ring 300, the base 400 drives the adjustment seat 500 to rotate, thereby enabling different positions on the adjustment seat 500 to cooperate with the spring adjustment position 600 to adjust the position of the adjustment seat 500.

[0024] In some embodiments, a damping spring is fitted on the damper body 100 of the reciprocating adjustable rear damper, the lower end of the damping spring abutting against the spring seat 200, and the lower end of the spring seat 200 abutting against the upper end of the base 400.

[0025] When the shock absorber needs adjustment, rotating the reciprocating adjustment ring 300 causes the base 400 to rotate, which in turn rotates the adjustment seat 500. This allows for switching between different engagements between the adjustment seat 500 and the spring adjustment position 600, thereby adjusting the shock absorber. During adjustment, the user simply rotates the reciprocating adjustment ring 300 without the need for additional tools, improving adjustment efficiency.

[0026] Reference Figure 2 In an optional embodiment, the lower end of the adjusting seat 500 is provided with a plurality of stop grooves 502 for cooperating with the spring adjusting stop 600, and two adjacent stop grooves 502 are connected by an arc-shaped surface.

[0027] Multiple stop grooves 502 are provided at the lower end of the adjustment seat 500. In order to enable the spring adjustment stop 600 to move more smoothly in adjacent stop grooves 502, adjacent stop grooves 502 are connected by arc-shaped surfaces.

[0028] The combination of the adjusting seat 500 and the spring adjusting position 600 is existing technology and is a commonly used structure in shock absorbers. In an optional embodiment, the upper end of the adjusting seat 500 is provided with a plurality of mounting grooves 501, and the inner side of the base 400 is provided with an inner protrusion 404 that cooperates with the mounting grooves 501; the base 400 and the adjusting seat 500 rotate synchronously by mounting the inner protrusion 404 in the mounting grooves 501.

[0029] In order for the base 400 to drive the adjustment seat 500 to rotate, a plurality of mounting grooves 501 are provided on the upper end of the adjustment seat 500, and the plurality of mounting grooves 501 are evenly arranged on the upper end of the adjustment seat 500.

[0030] Multiple inner protrusions 404 are provided on the base 400, and each inner protrusion 404 corresponds to an assembly groove 501. After the base 400 is fitted onto the shock absorber body 100, it moves from top to bottom, so that the inner protrusions 404 are assembled in the assembly groove 501. This connects the base 400 with the adjusting seat 500, so that the base 400 and the adjusting seat 500 rotate synchronously.

[0031] Reference Figure 5 In an optional embodiment, a lower support platform 402 is provided on the outer side of the base 400, and the rigid gear tooth 401 is provided on the upper end of the lower support platform 402; the lower support platform 402 is used to support the reciprocating adjustment ring 300; and a plurality of drainage grooves 403 are provided on the lower support platform 402.

[0032] To prevent the reciprocating adjusting ring 300 from detaching from the base 400, a lower support platform 402 is provided on the outer side of the base 400, and the rigid gear teeth 401 on the base 400 are located at the upper end of the lower support platform 402. After the reciprocating adjusting ring 300 is fitted onto the base 400, the lower end of the reciprocating adjusting ring 300 is supported by the lower support platform 402, so that the pawl 301 of the reciprocating adjusting ring 300 is engaged with the rigid gear teeth 401.

[0033] Multiple drainage channels 403 are provided on the lower support platform 402, so that the mud and water between the base 400 and the reciprocating adjusting ring 300 can flow onto the lower support platform 402 and flow downward through the drainage channels 403, thus avoiding the accumulation of mud and water.

[0034] In an optional embodiment, a lower annular baffle 305 is provided at the lower end of the reciprocating adjusting ring 300, and the lower annular baffle 305 covers the lower support platform 402. In some embodiments, a lower annular baffle 305 is provided at the lower end of the reciprocating adjustment ring 300. The lower annular baffle 305 covers the lower support platform 402 and can block foreign objects, effectively preventing foreign objects from entering between the reciprocating adjustment ring 300 and the base 400.

[0035] In an optional embodiment, the upper end of the spring seat 200 is provided with an annular protrusion 201, and the annular protrusion 201 is sleeved on the shock absorber body 100; the lower end of the shock-absorbing spring is sleeved on the annular protrusion 201 and abuts against the spring seat 200.

[0036] Reference Figure 6 and Figure 7 In an optional embodiment, the lower end of the spring seat 200 is provided with a first groove 203, and the upper end of the base 400 is fitted into the first groove 203. In an optional embodiment, the first groove 203 forms a lower annular protrusion 202 at the lower end of the spring seat 200, the lower annular protrusion 202 being fitted into the gap between the base 400 and the shock absorber body 100.

[0037] In an optional embodiment, the lower end of the spring seat 200 is provided with a second groove 204, and the upper end of the reciprocating adjusting ring 300 forms an upper annular protrusion 304 that matches the second groove 204.

[0038] To effectively prevent mud and water accumulation, a first groove 203 and a second groove 204 are provided at the lower end of the spring seat 200. The upper end of the base 400 is fitted into the first groove 203, and the upper end of the reciprocating adjustment ring 300 is fitted into the second groove 204. The lower annular protrusion 202 is fitted into the gap between the base 400 and the shock absorber body 100. This effectively prevents mud and water from entering between the adjustment seat 500 and the shock absorber body 100, between the base 400 and the adjustment seat 500, and between the reciprocating adjustment ring 300 and the base 400.

[0039] In an optional embodiment, the reciprocating adjusting ring 300 is provided with a plurality of mounting ports 303, and a pawl 301 is provided in each of the mounting ports 303.

[0040] To facilitate the rotation of the base 400, the reciprocating adjustment ring 300 is provided with a mounting port 303, and the pawl 301 is provided in the mounting port 303. During the rotation of the reciprocating adjustment ring 300, the pawl 301 can change phase outward, and then the pawl 301 can pass through one rigid gear tooth 401 at a time, so that the reciprocating adjustment ring 300 can rotate, retract and be fixed on the base 400.

[0041] When the reciprocating adjustment ring 300 rotates to a certain angle, and it becomes inconvenient for the user to rotate the reciprocating adjustment ring 300, the reciprocating adjustment ring 300 can rotate in the opposite direction. During the reverse rotation of the reciprocating adjustment ring 300, the pawl 301 deforms. While the reciprocating adjustment ring 300 is reciprocated by the handle 302, the base 400 rotates in one direction. The inner protrusion 404 of the base 400 drives the adjustment seat 500. The shock absorption adjustment function is achieved by the different cooperation between the stop groove 502 of the adjustment seat 500 and the spring adjustment stop 600.

[0042] The outer protrusion on the reciprocating adjustment ring 300 forms a handle 302. The reciprocating adjustment ring 300 can be rotated more easily through the handle 302, that is, the reciprocating adjustment ring 300 can be rotated without additional tools, so as to adjust the shock absorber.

[0043] The base 400 and the spring seat 200 are in direct contact and bear force. There is a gap between the upper end of the reciprocating adjustment ring 300 and the lower end of the spring seat 200 to facilitate the rotation of the reciprocating adjustment ring 300.

[0044] In an optional embodiment, a lower annular groove 405 is provided on the base 400, and a stop mark 406 is provided in the lower annular groove 405. A lower marking seat 700 is provided on the shock absorber body 100, and an upper annular groove 702 is provided on the lower marking seat 700. The lower end of the base 400 is fitted into the upper annular groove 702. A side opening 703 communicating with the upper annular groove 702 is provided on the lower marking seat 700, and the side opening 703 is used to observe the gear marking 406.

[0045] Reference Figure 8 In an optional embodiment, an inner positioning groove 701 matching the spring adjustment stop 600 is provided in the lower marking seat 700; a snap-fit ​​protrusion 704 is provided in the upper annular groove 702, the snap-fit ​​protrusion 704 snaps into the lower annular groove 405; and a guide slope 705 is provided on the snap-fit ​​protrusion 704, the guide slope 705 guides the base 400.

[0046] In some embodiments, a lower indicator seat 700 is provided on the shock absorber body 100. The lower indicator seat 700 has an upper annular groove 702, and the lower end of the base 400 can be inserted into the lower annular groove 405; that is, the lower annular groove 405 of the base 400 enters the upper annular groove 702. In order to make the position indicator 406 on the base 400 clearly visible, a side opening 703 is provided on the lower indicator seat 700. The position indicator 406 observed from the side opening 703 can reflect the coordination between the spring adjustment position 600 and the different positions on the adjustment seat 500, which makes it convenient to observe the adjustment result.

[0047] In order to keep the lower indicator seat 700 fixed to the shock absorber body 100, an inner positioning groove 701 is provided on the lower indicator seat 700. Each spring adjustment position 600 corresponds to an inner positioning groove 701. Since the spring adjustment position 600 is fixed on the shock absorber body 100, the lower indicator seat 700 is fixed on the shock absorber body 100, so that the lower indicator seat 700 will not rotate.

[0048] A snap-fit ​​protrusion 704 is provided in the upper annular groove 702, and a guide slope 705 is provided on the snap-fit ​​protrusion 704. When the base 400 is inserted into the upper annular groove 702, the base 400 abuts against the guide slope 705, causing the snap-fit ​​protrusion 704 to move away from the shock absorber body 100. When the snap-fit ​​protrusion 704 moves to the position corresponding to the lower annular groove 405, the snap-fit ​​protrusion 704 is inserted into the lower annular groove 405, so that the base 400 is connected to the lower marking seat 700, and the positions of the lower marking seat 700 and the base 400 are relatively fixed. Since the lower annular groove 405 is annular, when the base 400 rotates, the snap-fit ​​protrusion 704 and the lower annular groove 405 can move relative to each other, that is, the lower marking seat 700 does not affect the rotation of the base 400.

[0049] The reciprocating adjustable rear shock absorber provided by this invention, after the reciprocating adjusting ring 300 rotates, can drive the base 400 to rotate, thereby causing the adjusting seat 500 to rotate. In this way, different positions on the adjusting seat 500 cooperate with the spring adjusting position 600 to realize the height adjustment of the adjusting seat 500, thereby realizing the height adjustment of the spring seat 200, and realizing the adjustment of the shock absorber. Since a handle 302 is provided on the reciprocating adjusting ring 300, no additional tools are needed when adjusting the shock absorber, thus improving the efficiency of adjusting the shock absorber.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reciprocating adjustable rear shock absorber, characterized in that, It includes a shock absorber body (100), on which a shock absorber spring and a spring seat (200) are sleeved, and the lower end of the shock absorber spring abuts against the upper end of the spring seat (200). At least two spring adjustment positions (600) are provided on the shock absorber body (100); an adjustment seat (500) is sleeved on the shock absorber body (100), and the lower end of the adjustment seat (500) abuts against the upper end of the spring adjustment position (600). A base (400) is fitted on the adjusting seat (500), and a reciprocating adjusting ring (300) is fitted on the base (400); a plurality of rigid gear teeth (401) are provided on the periphery of the base (400), and a plurality of pawls (301) that cooperate with the rigid gear teeth (401) are provided on the reciprocating adjusting ring (300). A plurality of outward protrusions are provided on the reciprocating adjustment ring (300), and the outward protrusions form a handle (302) for rotating the reciprocating adjustment ring (300). The upper end of the base (400) abuts against the lower end of the spring seat (200). By rotating the reciprocating adjustment ring (300), the base (400) drives the adjustment seat (500) to rotate, thereby enabling different positions on the adjustment seat (500) to cooperate with the spring adjustment position (600) to adjust the position of the adjustment seat (500).

2. The reciprocating adjustable rear shock absorber according to claim 1, characterized in that, The lower end of the adjustment seat (500) is provided with a plurality of stop grooves (502) for cooperating with the spring adjustment stop (600), and two adjacent stop grooves (502) are connected by an arc surface.

3. The reciprocating adjustable rear shock absorber according to claim 1, characterized in that, The upper end of the adjusting seat (500) is provided with a plurality of mounting grooves (501), and the inner side of the base (400) is provided with an inner protrusion (404) that cooperates with the mounting grooves (501); by mounting the inner protrusion (404) in the mounting grooves (501), the base (400) and the adjusting seat (500) rotate synchronously.

4. The reciprocating adjustable rear shock absorber according to claim 1, characterized in that, A lower support platform (402) is provided on the outer side of the base (400), and the rigid gear tooth (401) is provided on the upper end of the lower support platform (402); the lower support platform (402) is used to support the reciprocating adjustment ring (300); and a plurality of drainage grooves (403) are provided on the lower support platform (402).

5. The reciprocating adjustable rear shock absorber according to claim 4, characterized in that, The lower end of the reciprocating adjustment ring (300) is provided with a lower annular baffle (305), and the lower annular baffle (305) covers the lower support platform (402).

6. The reciprocating adjustable rear shock absorber according to claim 1, characterized in that, The upper end of the spring seat (200) is provided with an annular protrusion (201), and the annular protrusion (201) is sleeved on the shock absorber body (100); the lower end of the shock absorber spring is sleeved on the annular protrusion (201) and abuts against the spring seat (200).

7. The reciprocating adjustable rear shock absorber according to claim 6, characterized in that, The lower end of the spring seat (200) is provided with a first groove (203), and the upper end of the base (400) is fitted into the first groove (203); The first groove (203) forms a lower annular protrusion (202) at the lower end of the spring seat (200), and the lower annular protrusion (202) is fitted into the gap between the base (400) and the shock absorber body (100); The lower end of the spring seat (200) is provided with a second groove (204), and the upper end of the reciprocating adjusting ring (300) forms an upper annular protrusion (304) that matches the second groove (204).

8. The reciprocating adjustable rear shock absorber according to claim 1, characterized in that, The reciprocating adjustment ring (300) is provided with a plurality of mounting ports (303), and a pawl (301) is provided in each of the mounting ports (303).

9. The reciprocating adjustable rear shock absorber according to claim 1, characterized in that, The base (400) is provided with a lower annular groove (405), and a stop mark (406) is provided in the lower annular groove (405). A lower marking seat (700) is provided on the shock absorber body (100), and an upper annular groove (702) is provided on the lower marking seat (700). The lower end of the base (400) is fitted into the upper annular groove (702). A side opening (703) communicating with the upper annular groove (702) is provided on the lower marking seat (700), and the side opening (703) is used to observe the gear marking (406).

10. The reciprocating adjustable rear shock absorber according to claim 9, characterized in that, An inner positioning groove (701) matching the spring adjustment position (600) is provided in the lower marking seat (700); a snap-fit ​​protrusion (704) is provided in the upper annular groove (702), and the snap-fit ​​protrusion (704) snaps into the lower annular groove (405); and a guide slope (705) is provided on the snap-fit ​​protrusion (704), and the guide slope (705) guides the base (400).

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