WO2024066923A1

WO2024066923A1 - Scooter and shock absorber thereof

Info

Publication number: WO2024066923A1
Application number: PCT/CN2023/116569
Authority: WO
Inventors: 魏林院; 王灿; 吕荣辉
Original assignee: 纳恩博（常州）科技有限公司
Priority date: 2022-09-30
Filing date: 2023-09-01
Publication date: 2024-04-04
Also published as: CN218440385U

Abstract

A scooter and a shock absorber thereof. The shock absorber comprises a sleeve (1) and a shaft (2); a hydraulic cavity (11) is formed in the sleeve (1); the shaft (2) is provided with a piston portion; the piston portion is slidably fitted in the hydraulic cavity (11); one of the wall of the hydraulic cavity (11) and the peripheral wall of the piston portion is provided with a guide groove (12), and the other one of the wall of the hydraulic cavity and the peripheral wall of the piston portion is provided with a guide portion (211); and the guide groove (12) and the guide portion (211) extend in the extension direction of the hydraulic cavity (11).

Description

Scooter and shock absorber thereof

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 2022226029542 filed in China on September 30, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to the technical field of shock absorption, and in particular to a shock absorber and a mobility scooter using the shock absorber.

Background technique

Scooters, balance bikes and other mobility scooters are becoming more and more popular among consumers due to their simple operation and convenient storage. In order to improve riding comfort, some mobility scooters are equipped with hydraulic shock absorbers on the front seat tubes. However, in the related art, the hydraulic shock absorbers cannot rotate synchronously with the front fork and have poor guiding effects.

Summary of the invention

The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

To this end, a first aspect of the present disclosure provides a shock absorber that can enhance the synchronization of rotation and has good guiding properties.

A second aspect of the present disclosure provides a mobility scooter using the shock absorber provided in the first aspect of the present disclosure.

The shock absorber in the first aspect embodiment of the present disclosure includes a sleeve body and a shaft body, wherein the sleeve body is provided with a hydraulic chamber, and the shaft body is provided with a piston portion, and the piston portion is slidably engaged in the hydraulic chamber, and one of the chamber wall of the hydraulic chamber and the outer peripheral wall of the piston portion is provided with a guide groove, and the other is provided with a guide portion, and the guide groove and the guide portion extend along the extension direction of the hydraulic chamber.

The shock absorber of the disclosed embodiment can enhance the synchronization of rotation and has good guiding performance.

In some embodiments, the guide groove is provided on the cavity wall of the hydraulic cavity, and the guide portion is detachably provided on the piston portion.

In some embodiments, the shock absorber includes an insert, the piston portion is provided with a slot, the slot penetrates the piston portion along a radial direction of the piston portion, the insert fits in the slot, and the portion of the insert extending out of the slot forms the guide portion.

In some embodiments, the cavity wall of the hydraulic cavity is provided with two guide grooves, both ends of the insert extend to the outside of the slot and form guide parts, and the two guide parts are respectively matched in the two guide grooves.

In some embodiments, the slot is a long slot, and the extending direction of the slot and the extending direction of the guide slot are Consistent.

In some embodiments, the shaft body includes a first section and a second section, the radial dimension of the first section is larger than that of the second section, and the first section forms the piston portion.

In some embodiments, the piston portion separates the hydraulic chamber into a first chamber and a second chamber, the shaft body is provided with an oil passage, the oil passage connects the first chamber and the second chamber, and the oil passage runs through the first section.

In some embodiments, the guide portion is provided with a first convex surface and a second convex surface, and the first convex surface and the second convex surface are arranged opposite to each other along the extension direction of the hydraulic chamber.

In some embodiments, the shock absorber includes a first component and a second component, wherein the first component is disposed at one end of the sleeve and surrounds the outer circumference of the shaft body, and the first component is suitable for sealing and blocking one end of the hydraulic chamber, and the second component is disposed at the other end of the sleeve, and the second component is suitable for sealing and blocking the other end of the hydraulic chamber.

In some embodiments, the first component includes a shaft sleeve, an oil seal and a limiter, the inner wall of the sleeve is provided with an annular groove, the limiter fits in the annular groove, and the limiter is arranged between the oil seal and the shaft sleeve.

In some embodiments, the first component includes a stopper and a first elastic member, the stopper is connected to the sleeve body, the oil seal is clamped between the stopper and the limiting member, and the first elastic member is clamped between the piston portion and the sleeve.

In some embodiments, the second component includes a plug and a seal, the end of the sleeve is provided with an annular cone surface, the seal is sleeved on the outer peripheral side of the plug, and the seal is clamped between the annular cone surface and the plug.

In some embodiments, the shock absorber includes a second elastic member sandwiched between the piston portion and the second component.

In some embodiments, the shock absorber includes a stop member and a nut member, wherein the stop member is sleeved on the outer peripheral side of the shaft body, one of the stop member and the shaft body is provided with a stop groove, and the other is provided with a stop portion, the stop portion is engaged in the stop groove to realize the stop assembly of the stop member and the shaft body, the nut member is threadedly assembled on the shaft body, and the nut member is suitable for cooperating with the stop member to fix the shaft body.

The mobility scooter according to the second aspect of the present disclosure comprises a shock absorber, which is the shock absorber described in the first aspect of the present disclosure.

In some embodiments, the mobility scooter includes a front fork and a seat tube, the shock absorber is connected between the front fork and the seat tube, one of the sleeve and the shaft is connected to the front fork, and the other is connected to the seat tube.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a first cross-sectional schematic diagram of the overall structure of a shock absorber according to an embodiment of the present disclosure.

FIG. 2 is a second schematic cross-sectional view of the overall structure of the shock absorber according to the embodiment of the present disclosure.

FIG. 3 is a schematic cross-sectional view taken along line AA in FIG. 1 .

Fig. 4 is a schematic cross-sectional view of the B-B portion in Fig. 1 .

FIG. 5 is a schematic structural diagram of the first component in FIG. 1 .

FIG. 6 is a schematic structural diagram of the second component in FIG. 1 .

FIG. 7 is a schematic diagram of the stop member and the nut member in FIG. 1 .

FIG. 8 is a first cross-sectional schematic diagram of the shock absorber in a compressed state according to an embodiment of the present disclosure.

FIG. 9 is a second cross-sectional schematic diagram of the shock absorber in a compressed state according to an embodiment of the present disclosure.

FIG. 10 is a front schematic diagram of a front fork assembly of a mobility scooter according to an embodiment of the present disclosure.

FIG. 11 is a schematic cross-sectional view of a front fork assembly of a mobility scooter according to an embodiment of the present disclosure.

Reference numerals:

Shock absorber 100;

Sleeve body 1; hydraulic chamber 11; first chamber 111; second chamber 112; guide groove 12; annular groove 13; annular cone surface 14;

Axle body 2; insert 21; guide portion 211; first convex surface 212; second convex surface 213; second section 22; first section 23; oil passage 24; anti-rotation groove 25;

First component 3; sleeve 31; limit member 32; oil seal 33; stopper 34; first elastic member 35;

Second component 4; plug 41; sealing member 42;

A second elastic member 5;

Anti-rotation member 6; Anti-rotation portion 61;

Nut member 7;

Gasket 8;

Front fork 200.

Detailed ways

Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

As shown in FIGS. 1 to 11 , the shock absorber 100 according to the embodiment of the first aspect of the present disclosure includes a sleeve body 1 and a shaft body 2 .

A hydraulic chamber 11 is provided in the sleeve body 1, and a piston portion is provided in the shaft body 2. The piston portion can be slidably fitted in the hydraulic chamber 11. One of the chamber wall of the hydraulic chamber 11 and the outer peripheral wall of the piston portion is provided with a guide groove 12, and the other is provided with a guide portion 211. The guide groove 12 and the guide portion 211 extend along the extension direction of the hydraulic chamber 11.

Specifically, as shown in Figure 1, the sleeve 1 can be a tubular structure, the sleeve 1 and the hydraulic cavity 11 in the sleeve 1 can extend along the up and down directions, the shaft 2 can be fitted in the sleeve 1, and the shaft 2 can slide in the hydraulic cavity 11 along the up and down directions relative to the sleeve 1.

The piston part is arranged at the upper end of the shaft body 2. The piston part can be arranged integrally with the shaft body 2 or detachably from the shaft body 2. A guide portion 211 may be provided on the outer peripheral side of the piston portion, and the guide portion 211 may be integrally provided with the piston portion, or may be detachably connected to the piston portion, and the guide portion 211 may be a guide block. The guide groove 12 may be provided on the cavity wall of the hydraulic cavity 11, and the guide groove 12 may extend in the up-down direction.

When the piston moves in the hydraulic chamber 11, the guide block can move in the guide groove 12, thereby enhancing the guiding performance of the movement between the shaft body 2 and the sleeve body 1. Secondly, since the guide block and the guide groove 12 have a limiting function, the anti-rotation assembly of the shaft body 2 and the sleeve body 1 can be achieved, avoiding the situation where the shaft body 2 and the sleeve body 1 are prone to relative rotation when the shock absorber 100 rotates, thereby ensuring the consistency and synchronization of the rotation.

The shock absorber 100 of the disclosed embodiment enhances the synchronization of the rotation of the sleeve 1 and the shaft 2 of the shock absorber 100 by adding the cooperation of the guide part 211 and the guide groove 12 between the piston part and the sleeve 1, and also enhances the guiding property of the sliding between the shaft 2 and the sleeve 1, thereby improving the safety and reliability of use. In addition, the guide part 211 and the guide groove 12 are both built into the sleeve 1, so that the appearance of the shock absorber 100 is simple and has fewer parts, which is conducive to improving the integration with the subsequent assembly of the mobility scooter.

In some embodiments, as shown in Fig. 1, the guide groove 12 is provided on the cavity wall of the hydraulic cavity 11, and the guide portion 211 is detachably provided on the piston portion. For example, the guide portion 211 can be fixed to the piston portion by means of buckles, fasteners, etc., so as to facilitate subsequent inspection and maintenance.

In some embodiments, as shown in Figures 1 to 3, the shock absorber 100 includes an insert 21, which can be a flat plate. The piston part is provided with a slot, which passes through the piston part along the radial direction of the piston part (a direction perpendicular to the up and down directions). The insert 21 can be fitted in the slot, and a part of the insert 21 can extend out of the slot and form a guide portion 211.

During installation, the insert 21 can be first inserted into the slot, then the guide portion 211 on the insert 21 can be aligned with the guide groove 12, and finally the piston portion can be inserted into the hydraulic chamber 11. This facilitates installation and disassembly and simplifies the arrangement of the guide portion 211.

In some embodiments, the wall of the hydraulic chamber 11 is provided with two guide grooves 12, and both ends of the insert 21 extend to the outside of the slot and form guide portions 211, and the two guide portions 211 are respectively fitted in the two guide grooves 12. As shown in FIG1 , both ends of the insert 21 along the radial direction of the piston portion can extend to the outside of the slot, and the two guide grooves 12 on the wall of the hydraulic chamber 11 can be arranged relative to each other. This can enhance the balance of the structural assembly and avoid the problem of eccentric center of gravity, and can achieve the balance of force and avoid the situation that one side of the shaft body 2 is easily unstable when force is applied.

In some embodiments, as shown in FIG. 2 , the slot can be a long slot, and the extending direction of the slot is consistent with the extending direction of the guide slot 12, that is, the slot can extend in the up-down direction. The shape of the insert 21 is adapted to the shape of the slot. Thus, on the one hand, the fitting area between the insert 21 and the guide slot 12 can be increased, thereby enhancing the guiding property and structural strength, and on the other hand, the thickness of the insert 21 can be made smaller, thereby reducing the resistance of the insert 21 moving in the hydraulic fluid in the hydraulic chamber 11.

In some embodiments, the shaft body 2 includes a first section 23 and a second section 22, wherein the radial dimension of the first section 23 is larger than that of the second section 22. The first section 22 and the first section 23 form a piston part. As shown in FIG. 2 , the first section 23 and the second section 22 can be integrally arranged, and the first section 23 can be arranged on the upper side of the second section 22. The first section 23 and the second section 22 can both be cylindrical. During assembly, the first section 23 can be guided and slidably fitted in the hydraulic chamber 11, thereby simplifying the arrangement of the piston part, ensuring the strength of the connection structure of the piston part, and meeting the use requirements.

In some embodiments, the piston portion separates the hydraulic chamber 11 into a first chamber 111 and a second chamber 112, and the shaft body 2 is provided with an oil passage 24, the oil passage 24 connects the first chamber 111 and the second chamber 112, and the oil passage 24 runs through the first section 23. As shown in FIG8 and FIG9, during the movement of the piston portion, the hydraulic chambers 11 on the upper and lower sides of the piston portion can form the first chamber 111 and the second chamber 112 respectively, wherein the first chamber 111 can be located below the piston portion, and the second chamber 112 can be located above the piston portion. The oil passage 24 can connect the first chamber 111 and the second chamber 112. When the shock absorber 100 is extended, the hydraulic fluid in the first chamber 111 can flow into the second chamber 112 via the oil passage 24, and when the shock absorber 100 is contracted, the hydraulic fluid in the second chamber 112 can flow into the first chamber 111 via the oil passage 24, thereby achieving the effect of hydraulic shock absorption.

In some embodiments, the guide portion 211 is provided with a first convex surface 212 and a second convex surface 213, and the first convex surface 212 and the second convex surface 213 are arranged opposite to each other along the extension direction of the hydraulic chamber 11. As shown in FIG9, the first convex surface 212 can be provided on the upper side of the guide portion 211 and convex upward, and the second convex surface 213 can be provided on the lower side of the guide portion 211 and convex downward. When the guide portion 211 slides in the hydraulic chamber 11, the first convex surface 212 and the second convex surface 213 can reduce the sliding resistance of the guide portion 211.

In some embodiments, as shown in FIG1 , the shock absorber 100 includes a first component 3 and a second component 4, wherein the first component 3 is disposed at one end of the sleeve 1 and surrounds the outer peripheral side of the shaft 2, and the first component 3 is suitable for sealing and blocking one end of the hydraulic chamber 11, and the second component 4 is disposed at the other end of the sleeve 1, and the second component 4 is suitable for sealing and blocking the other end of the hydraulic chamber 11. Thus, the hydraulic chamber 11 can be sealed, and leakage of the hydraulic fluid in the hydraulic chamber 11 can be avoided.

In some embodiments, the first component 3 includes a sleeve 31 , an oil seal 33 and a limiter 32 . The inner wall of the sleeve body 1 is provided with an annular groove 13 . The limiter 32 fits in the annular groove 13 . The limiter 32 is provided between the oil seal 33 and the sleeve 31 .

As shown in FIG5 , the inner side of the lower end of the sleeve 1 may be provided with an annular groove 13, the stopper 32 may be annular, the outer peripheral edge of the stopper 32 may be embedded in the annular groove 13, the oil seal 33 may be provided below the stopper 32, and the shaft sleeve 31 may be provided above the stopper 32. The oil seal 33 plays the role of sealing the lower end of the hydraulic chamber 11, the shaft sleeve 31 may be a copper sleeve, the shaft sleeve 31 may enhance the guiding property of the sliding of the shaft body 2, and may reduce wear. A step surface may be provided inside the sleeve 1, and the upper end of the shaft sleeve 31 may be matched with the step surface of the sleeve 1 to stop and cooperate, thereby playing the role of limiting the movement stroke of the sleeve 1.

When the shaft body 2 slides downward, the shaft sleeve 31 tends to move downward. At this time, the limiting member 32 can form a stop limit for the shaft sleeve 31, thereby avoiding the situation where the shaft sleeve 31 squeezes the oil seal 33 and ensuring the sealing effect of the oil seal 33.

In some embodiments, the first component 3 includes a stopper 34 and a first elastic member 35 , the stopper 34 is connected to the sleeve body 1 , the oil seal 33 is clamped between the stopper 34 and the limit member 32 , and the first elastic member 35 is clamped between the piston portion and the sleeve 31 .

As shown in FIG5 , the stopper 34 may be an external nut, and the stopper 34 may be threadedly assembled on the lower end of the sleeve 1, and the oil seal 33 may be assembled in the annular space between the stopper 34 and the limiting member 32. The first elastic member 35 may be a corrugated elastic member. The first elastic member 35 can be sleeved on the outer peripheral side of the second section 22, and the first elastic member 35 can be clamped between the sleeve 31 and the first section 23 (piston part). The first elastic member 35 can avoid the rigid contact between the piston part and the sleeve 31, thereby achieving a buffering effect.

In some embodiments, the second component 4 includes a plug 41 and a seal 42 , an annular cone 14 is provided at the end of the sleeve 1 , the seal 42 is sleeved on the outer peripheral side of the plug 41 , and the seal 42 is clamped between the annular cone 14 and the plug 41 .

As shown in Fig. 6, the plug 41 can be interference fit or threadedly assembled in the upper end port of the sleeve 1. The seal 42 can be a sealing ring, and the annular conical surface 14 is provided at the upper end of the sleeve 1. The annular conical surface 14 has a certain inclination. When the plug 41 is assembled with the sleeve 1, the seal 42 can be squeezed and fitted between the plug 41 and the annular conical surface 14, thereby improving the sealing effect.

In some embodiments, the shock absorber 100 includes a second elastic member 5, and the second elastic member 5 is sandwiched between the piston portion and the second component 4. As shown in Figures 8 and 9, the second elastic member 5 can be a spring, and the second elastic member 5 can be arranged in the second cavity 112. When the shock absorber 100 is compressed, the second elastic member 5 can be compressed to store energy, and when the shock absorber 100 is extended, the second elastic member 5 will release the stored energy, further achieving the effect of shock absorption and energy storage.

In some embodiments, the shock absorber 100 includes a stop member 6 and a nut member 7. The stop member 6 is sleeved on the outer peripheral side of the shaft body 2. One of the stop member 6 and the shaft body 2 is provided with a stop groove 25, and the other is provided with a stop portion 61. The stop portion 61 is engaged in the stop groove 25 to realize the stop assembly of the stop member 6 and the shaft body 2. The nut member 7 is threadedly assembled on the shaft body 2, and the nut member 7 is suitable for cooperating with the stop member 6 to fix the shaft body 2.

As shown in Figures 4 and 7, the stop member 6 can be annular, and two stop portions 61 can be provided on the inner side of the stop member 6. Two stop grooves 25 can be provided on the shaft body 2. The two stop grooves 25 can both extend in the up and down directions. When the stop member 6 is assembled on the outer peripheral side of the shaft body 2, the two stop portions 61 on the stop member 6 can be matched one by one in the two stop grooves 25, thereby realizing the stop assembly of the stop member 6 and the shaft body 2.

The nut member 7 can be a nut, and the nut member 7 can be arranged below the stop member 6. A gasket 8 can be arranged between the nut member 7 and the stop member 6. During assembly, the distance between the gasket 8 and the stop member 6 can be adjusted by rotating the nut member 7, so that a part of the front fork 200 can be clamped and fixed between the nut member 7 and the stop member 6, thereby realizing the installation and fixation of the shock absorber 100.

It should be noted that the anti-rotation member 6 may be provided with a plurality of protrusions, the front fork 200 may be provided with a plurality of insertion holes, and the plurality of protrusions may be inserted into the plurality of insertion holes, thereby realizing the anti-rotation assembly of the anti-rotation member 6 and the front fork 200 .

The following describes a mobility scooter according to an embodiment of the present disclosure.

The scooter of the embodiment of the present disclosure includes a shock absorber 100, and the shock absorber 100 may be the shock absorber 100 described in the embodiment of the first aspect above. The scooter may be an electric scooter, an electric bicycle, an electric balance car, etc., and of course, it may also be other scooters that require the use of the shock absorber 100. In some embodiments, the scooter includes a front fork 200 and a seat tube, and the shock absorber 100 is connected between the front fork 200 and the seat tube, and one of the sleeve 1 and the shaft 2 is connected to the front fork 200, and the other is connected to the sleeve 1 and the shaft 2. Connected to the riser.

As shown in FIGS. 10 and 11 , a seat tube (not shown) may be disposed above the front fork 200, the shock absorber 100 may be connected between the seat tube and the front fork 200, the shaft 2 of the shock absorber 100 may be connected to the front fork 200, and the sleeve 1 of the shock absorber 100 may be connected to the seat tube. In some other embodiments, the shaft 2 may also be connected to the front fork 200, and the sleeve 1 may also be connected to the seat tube. When in use, the shock absorber 100 has good rotation synchronization and sliding guidance, thereby facilitating the transmission of the torsional effect of the seat tube to the front fork 200, and facilitating the steering adjustment of the front wheel.

In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the present disclosure, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of contradiction, those skilled in the art will The different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined. Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and cannot be understood as limitations of the present disclosure. Changes, modifications, substitutions and variations made by ordinary technicians in the field to the above embodiments are all within the scope of protection of the present disclosure.

Claims

A shock absorber, characterized in that it includes a sleeve body and a shaft body, wherein the sleeve body is provided with a hydraulic chamber, and the shaft body is provided with a piston portion, and the piston portion is slidably engaged in the hydraulic chamber, and one of the chamber wall of the hydraulic chamber and the outer peripheral wall of the piston portion is provided with a guide groove, and the other is provided with a guide portion, and the guide groove and the guide portion extend along the extension direction of the hydraulic chamber.
The shock absorber according to claim 1 is characterized in that the guide groove is provided on the cavity wall of the hydraulic cavity, and the guide portion is detachably provided on the piston portion.
The shock absorber according to claim 1 or 2 is characterized in that it includes an insert, the piston part is provided with a slot, the slot penetrates the piston part along the radial direction of the piston part, the insert is fitted in the slot, and the part of the insert extending out of the slot forms the guide part.
The shock absorber according to claim 3 is characterized in that the cavity wall of the hydraulic cavity is provided with two guide grooves, both ends of the insert extend to the outside of the slot and form guide parts, and the two guide parts are respectively matched in the two guide grooves.
The shock absorber according to claim 3 or 4 is characterized in that the slot is a long slot, and the extending direction of the slot is consistent with the extending direction of the guide slot.
The shock absorber according to any one of claims 1 to 5, characterized in that the shaft body comprises a first section and a second section, the radial dimension of the first section is larger than that of the second section, and the first section forms the piston portion.
The shock absorber according to claim 6 is characterized in that the piston portion separates the hydraulic chamber into a first chamber and a second chamber, the shaft body is provided with an oil passage, the oil passage connects the first chamber and the second chamber, and the oil passage runs through the first section.
The shock absorber according to any one of claims 1 to 7 is characterized in that the guide portion is provided with a first convex surface and a second convex surface, and the first convex surface and the second convex surface are arranged opposite to each other along the extension direction of the hydraulic chamber.
The shock absorber according to any one of claims 1 to 8 is characterized in that it comprises a first component and a second component, the first component is arranged at one end of the sleeve and surrounds the outer circumference of the shaft body, the first component is suitable for sealing and blocking one end of the hydraulic chamber, and the second component is arranged at the other end of the sleeve, and the second component is suitable for sealing and blocking the other end of the hydraulic chamber.
The shock absorber according to claim 9 is characterized in that the first component includes a shaft sleeve, an oil seal and a limit piece, the inner wall of the sleeve body is provided with an annular groove, the limit piece is fitted in the annular groove, and the limit piece is arranged between the oil seal and the shaft sleeve.
The shock absorber according to claim 10 is characterized in that the first component comprises a stopper and a first elastic member, the stopper is connected to the sleeve, the oil seal is clamped between the stopper and the limiting member, and the first elastic member is connected to the sleeve. An elastic member is sandwiched between the piston portion and the sleeve.
The shock absorber according to any one of claims 9 to 11 is characterized in that the second component includes a plug and a seal, the end of the sleeve is provided with an annular cone surface, the seal is sleeved on the outer peripheral side of the plug, and the seal is clamped between the annular cone surface and the plug.
The shock absorber according to any one of claims 9 to 12, characterized by comprising a second elastic member, wherein the second elastic member is sandwiched between the piston portion and the second component.
The shock absorber according to any one of claims 1 to 13 is characterized in that it includes a stop member and a nut member, the stop member is sleeved on the outer peripheral side of the shaft body, one of the stop member and the shaft body is provided with a stop groove, and the other is provided with a stop portion, the stop portion is engaged in the stop groove to achieve the stop assembly of the stop member and the shaft body, the nut member is threadedly assembled on the shaft body, and the nut member is suitable for cooperating with the stop member to fix the shaft body.
A mobility scooter, characterized in that it comprises a shock absorber, wherein the shock absorber is the shock absorber according to any one of claims 1 to 14.
The scooter according to claim 15 is characterized in that it includes a front fork and a seat tube, the shock absorber is connected between the front fork and the seat tube, one of the sleeve and the shaft is connected to the front fork, and the other is connected to the seat tube.