阅读说明：本技术 避震器及其组装方法 (Shock absorber and assembling method thereof ) 是由 李忠家 于 2020-11-19 设计创作，主要内容包括：本发明关于一种避震器,其包括：一外管；一主管体,其相对该外管可活动地穿设于该外管,该主管体设有一端部,该主管体的端部包括一反折限位段；一限位部,其设于该主管体的一周面；及一活塞件,其设于该主管体及该外管之间,该活塞件卡抵于该反折限位段及该限位部之间；其中,该反折限位段朝该活塞件的方向反折卡抵该活塞件。本发明另关于一种前述避震器的组装方法,其包括以下步骤：安装该限位部于该主管体；推入该活塞件至该主管体以位于该限位部及该反折限位段之间；及折弯该反折限位段以反折压接于该活塞件。(The invention relates to a shock absorber, which comprises: an outer tube; the main pipe body is movably arranged in the outer pipe in a penetrating way relative to the outer pipe, and is provided with an end part, and the end part of the main pipe body comprises a reverse-folding limiting section; a limiting part arranged on a peripheral surface of the main pipe body; and a piston piece, it locates between body of the main pipe and the outer tube, the piston piece card is supported between spacing section of the reverse turn and the spacing part; wherein, the reverse-folding limiting section reversely folds towards the direction of the piston piece to be clamped against the piston piece. The invention also relates to an assembling method of the shock absorber, which comprises the following steps: installing the limiting part on the main pipe body; pushing the piston element into the main tube body to be positioned between the limiting part and the reverse-folding limiting section; and bending the reverse-folding limiting section to be in reverse-folding pressure connection with the piston piece.)

1. A shock absorber, comprising:

an outer tube;

the main pipe body is movably arranged on the outer pipe relative to the outer pipe and is provided with an end part, and the end part of the main pipe body comprises a reverse-folding limiting section;

a limiting part arranged on the periphery of the main pipe body; and

a piston piece, which is arranged between the main pipe body and the outer pipe and is clamped between the reverse-folding limiting section and the limiting part;

wherein, the reverse-folding limiting section reversely folds towards the direction of the piston piece to be clamped against the piston piece.

2. A shock absorber as set forth in claim 1, wherein said end of said main tube is movably disposed through said outer tube relative to said outer tube; the limiting part is a C-shaped buckle.

3. The shock absorber as set forth in claim 2, wherein a circumferential surface of said main tube has a circumferential groove, said C-shaped buckle is disposed in said circumferential groove, and said C-shaped buckle radially protrudes from said circumferential groove and abuts against said piston member.

4. The shock absorber as set forth in claim 3, wherein the piston member is annular, the piston member is disposed around the main tube, the piston member has a circumferential surface facing the circumferential surface of the main tube, the circumferential surface of the piston member has an annular groove, and the limiting portion radially protrudes into the annular groove.

5. A shock absorber according to claim 1, wherein said main tube has a material reducing section adjacent to said reverse-folding limiting section.

6. The shock absorber as set forth in claim 1, wherein the reverse-folding limiting section is a ring edge of one end of the main tube, and a supporting wall abutting against the piston member and an inclined guide ring wall disposed on an opposite side of the supporting wall are disposed on one side of the reverse-folding limiting section.

7. The shock absorber as set forth in claim 1, wherein said end portion further includes a middle section, said inflection limiting section integrally extends outward from said middle section, said piston member is sleeved on said middle section, and said inflection limiting section is forced to inflect and then extends radially and transversely to said middle section; the reverse-folding limiting section is an annular edge and is annularly propped against one end face of the piston piece.

8. The shock absorber of claim 7, wherein a wall thickness of said inflection limiting segments is thinner than a wall thickness of said middle segment.

9. The shock absorber as set forth in claim 8, wherein said limiting portion is a C-shaped buckle; the circumferential surface of the main pipe body is provided with an annular groove, the circumferential surface of the main pipe body is positioned at the outer side of the main pipe body, the C-shaped buckle is arranged in the annular groove, and the C-shaped buckle radially protrudes out of the annular groove and is abutted against the piston piece; the piston piece is annular, the main pipe body is sleeved with the piston piece, the piston piece is provided with an annular surface facing the peripheral surface of the main pipe body, the annular surface of the piston piece is provided with an annular groove, and the limiting part radially protrudes and abuts against the annular groove; the main pipe body is provided with a material reducing section adjacent to the reverse-folding limiting section, the material reducing section is connected between the reverse-folding limiting section and the middle section, and the material reducing section is provided with a groove; the annular groove is arranged at one end of the piston piece, the annular groove is an arc-shaped bent groove, and the reverse-folding limiting section and the limiting part are abutted against two opposite sides of the piston piece in the axial direction; the other end of the piston piece is provided with a dodging part corresponding to the material reducing section; the reverse-folding limiting section is a ring end edge, one side of the reverse-folding limiting section is provided with a resisting wall which is propped against the piston piece and an inclined guide ring wall which is arranged on the opposite side of the resisting wall; the abutting wall is an inclined wall and gradually extends outwards in the radial direction from one end close to the limiting part to one end of the reversely folded limiting section; the shock absorber further comprises an elastic piece, the main pipe body is further provided with a containing groove, one end of the elastic piece elastically abuts against the containing groove, the other end of the elastic piece elastically abuts against the outer pipe, the containing groove is provided with a port which is open towards the axial direction, and the inclined guide ring wall forms the port; the main pipe body is provided with a reducing section between the annular groove and the reverse-folding limiting section, the outer diameter of the reducing section is reduced from the annular groove to the reverse-folding limiting section, the reducing section is provided with an inclined guide surface, and the piston piece can pass through the reducing section.

10. A method of assembling a shock absorber according to any one of claims 1 to 9, comprising the steps of:

mounting the limiting part on the main pipe body;

pushing the piston piece into the main pipe body to be positioned between the limiting part and the reverse-folding limiting section; and

the reverse-folding limiting section is bent to be in reverse-folding pressure connection with the piston piece.

Technical Field

The invention relates to a shock absorber and an assembling method thereof.

Background

Because the ground is not flat, the vehicle can vibrate up and down continuously along with the bumpy road surface during traveling, and thus, not only can the internal components be damaged, but also the human body can be uncomfortable and injured. Therefore, the shock absorber is installed to absorb and buffer the impact force generated by the up-and-down vibration when braking or traveling on a rough road. In general, a shock absorber converts the generated impulsive force (vibration energy) into heat energy to be consumed by the resistance generated by a piston, so as to achieve the effect of buffering.

In the known shock absorber, the piston rod and the piston are coupled by sleeving the piston on the piston rod and radially penetrating the piston rod and the piston by a fixing pin. However, such a fastening method causes the force concentrated on the fixing pin to be easily broken, and the piston cannot be firmly combined with the piston rod, so the safety is poor.

Therefore, there is a need for a new and improved shock absorber and method for assembling the same to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a shock absorber and an assembling method thereof, which are quick to assemble and have good bonding strength.

In order to achieve the purpose, the invention adopts the following technical scheme:

a shock absorber, comprising: an outer tube; the main pipe body is movably arranged on the outer pipe relative to the outer pipe and is provided with an end part, and the end part of the main pipe body comprises a reverse-folding limiting section; a limiting part arranged on a peripheral surface of the main pipe body; and a piston piece, it locates between body of the main pipe and the outer tube, the piston piece card is supported between spacing section of the reverse turn and the spacing part; wherein, the reverse-folding limiting section reversely folds towards the direction of the piston piece to be clamped against the piston piece.

The end part of the main pipe body can movably penetrate through the outer pipe relative to the outer pipe; the limiting part is a C-shaped buckle.

The circumferential surface of the main pipe body is provided with an annular groove, the C-shaped buckle is arranged in the annular groove, and the C-shaped buckle radially protrudes out of the annular groove and abuts against the piston piece.

The piston piece is cyclic annular, and this piston piece cover is established the main pipe body, and this piston piece is equipped with one and is responsible for the global ring periphery of the body, and the ring periphery of this piston piece is equipped with an annular, spacing portion radially protruding is supported and is gone into the annular.

The main pipe body is provided with a material reducing section adjacent to the reverse-folding limiting section.

The reverse-folding limiting section is a ring end edge of one end of the main pipe body, and one side of the reverse-folding limiting section is provided with a supporting wall which supports against the piston piece and an inclined guide ring wall which is arranged on the opposite side of the supporting wall.

The end part also comprises a middle section, the reverse-folding limiting section integrally extends outwards from the middle section, the piston piece is sleeved on the middle section, and the reverse-folding limiting section is stressed to reversely fold and then radially extends to be transverse to the middle section; the reverse-folding limiting section is an annular edge and is annularly propped against one end face of the piston piece.

One wall thickness of the reverse-folding limiting section is thinner than that of the middle section.

The limiting part is a C-shaped buckle; the circumferential surface of the main pipe body is provided with an annular groove, the circumferential surface of the main pipe body is positioned at the outer side of the main pipe body, the C-shaped buckle is arranged in the annular groove, and the C-shaped buckle radially protrudes out of the annular groove and is abutted against the piston piece; the piston piece is annular, the main pipe body is sleeved with the piston piece, the piston piece is provided with an annular surface facing the peripheral surface of the main pipe body, the annular surface of the piston piece is provided with an annular groove, and the limiting part radially protrudes and abuts against the annular groove; the main pipe body is provided with a material reducing section adjacent to the reverse-folding limiting section, the material reducing section is connected between the reverse-folding limiting section and the middle section, and the material reducing section is provided with a groove; the annular groove is arranged at one end of the piston piece, the annular groove is an arc-shaped bent groove, and the reverse-folding limiting section and the limiting part are abutted against two opposite sides of the piston piece in the axial direction; the other end of the piston piece is provided with a dodging part corresponding to the material reducing section; the reverse-folding limiting section is a ring end edge, one side of the reverse-folding limiting section is provided with a resisting wall which is propped against the piston piece and an inclined guide ring wall which is arranged on the opposite side of the resisting wall; the abutting wall is an inclined wall and gradually extends outwards in the radial direction from one end close to the limiting part to one end of the reversely folded limiting section; the shock absorber further comprises an elastic piece, the main pipe body is further provided with a containing groove, one end of the elastic piece elastically abuts against the containing groove, the other end of the elastic piece elastically abuts against the outer pipe, the containing groove is provided with a port which is open towards the axial direction, and the inclined guide ring wall forms the port; the main pipe body is provided with a reducing section between the annular groove and the reverse-folding limiting section, the outer diameter of the reducing section is reduced from the annular groove to the reverse-folding limiting section, the reducing section is provided with an inclined guide surface, and the piston piece can pass through the reducing section.

A method of assembling the shock absorber, comprising the steps of: installing the limiting part on the main pipe body; pushing the piston element into the main tube body to be positioned between the limiting part and the reverse-folding limiting section; and bending the reverse-folding limiting section to be in reverse-folding pressure connection with the piston piece.

The invention has the beneficial effects that: the shock absorber and the assembling method thereof have the advantages of quick assembly and good bonding strength.

Drawings

Fig. 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a preferred embodiment of the present invention.

FIG. 3 is a cross-sectional view of a preferred embodiment of the present invention.

Fig. 4 to 6 are installation flow charts of a preferred embodiment of the present invention.

FIG. 7 is an enlarged view of a portion of a preferred embodiment of the present invention.

FIG. 8 is a diagram of the assembly steps of a preferred embodiment of the present invention.

Reference numerals: S1-S3: a step of; 1: a shock absorber; 10: an outer tube; 20: a primary tube; 21: an end portion; 211: a middle section; 22: a peripheral surface; 23: a ring groove; 24: a material reducing section; 241: a groove; 25: a containing groove; 251: a port; 26: a tapered section; 261: an inclined guide surface; 30: a limiting part; 40: a piston member; 41: a ring peripheral surface; 42: a ring groove; 43: a dodging section; 50: reversely folding the limiting section; 51: abutting against the wall; 52: an inclined guide ring wall; 60: an elastic member; a: axial direction; b1, B2: wall thickness.

Detailed Description

The following description is given by way of example only, and is not intended to limit the scope of the invention.

Referring to fig. 1 to 8, which show a preferred embodiment of the present invention, a shock absorber 1 (such as but not limited to a rear shock absorber) of the present invention includes an outer tube 10, a main tube 20, a limiting portion 30 and a piston member 40.

The main pipe 20 is movably (telescopically) disposed in the outer pipe 10 relative to the outer pipe 10, the main pipe 20 has an end portion 21, in this embodiment, the end portion 21 of the main pipe 20 movably penetrates the outer pipe 10 relative to the outer pipe, and the end portion 21 of the main pipe 20 includes a reverse-folding limiting section 50; the stopper 30 is disposed on a peripheral surface 22 of the main pipe 20, in this embodiment, the peripheral surface 22 of the main pipe 20 is located outside the main pipe 20, and in other embodiments, the stopper may also be located inside the main pipe; the piston member 40 is disposed between the main tube 20 and the outer tube 10, specifically, the piston member 40 abuts against the inner wall of the outer tube 10, and the piston member 40 is clamped against the reverse-folding limiting section 50 and the limiting portion 30; the reverse-folding limiting section 50 is reversely folded toward the piston member 40 and is clamped against the piston member 40, so that the assembly is fast, the bonding strength is good, and the stability of the piston member 40 is good, further, the reverse-folding limiting section 50 can prevent the piston member 40 from being pulled out, and the limiting portion 30 is used for supporting and stopping the movement of the piston member 40.

The end portion 21 further includes a middle section 211, the reverse-folding limiting section 50 integrally extends from the middle section 211, the piston member 40 is sleeved on the middle section 211, and the reverse-folding limiting section 50 is forced to reverse-fold and then extends radially and transversely to the middle section 211; preferably, the reverse-folding limiting section 50 is an annular edge, and the reverse-folding limiting section 50 is abutted against an end surface of the piston member 40, and can be abutted against one end of the piston member 40 to prevent the piston member 40 from separating from the main tube 20, so that the combination is good. The wall thickness B1 of the reverse-folding limiting section 50 is thinner than the wall thickness B2 of the middle section 211, so that the overall structure has high strength and is beneficial to the forced bending deformation of the reverse-folding limiting section 50.

The main pipe body 20 is provided with a material reducing section 24 adjacent to the reverse-folding limiting section 50, and the material reducing section 24 is connected between the reverse-folding limiting section 50 and the middle section 211; in this embodiment, the material reducing section 24 has a groove 241, and in other embodiments, the material reducing section may have a thin wall, so that the reverse-bending limiting section 50 is bent (e.g., bent and deformed), and the reverse-bending limiting section 50 is easily bent and deformed along the material reducing section 24 relative to the middle section 211.

The position-limiting part 30 is a C-shaped buckle, and in other embodiments, the position-limiting part may also be a flange integrally connected with the main tube and protruding radially; preferably, the peripheral surface 22 of the main tube 20 is provided with an annular groove 23, the C-shaped buckle is arranged in the annular groove 23, the C-shaped buckle radially protrudes out of the annular groove 23 and abuts against the piston member 40, and the C-shaped buckle can be radially expanded and contracted to be clamped and positioned in the annular groove 23. The piston member 40 is annular, the piston member 40 is disposed on the main tube 20, the piston member 40 has a circumferential surface 41 facing the circumferential surface 22 of the main tube 20, the circumferential surface 22 of the piston member 40 has an annular groove 42, the position-limiting portion 30 protrudes radially into the annular groove 42, one end of the piston member 40 has the annular groove 42, the annular groove 42 is an arc-shaped curved groove, the other end of the piston member 40 has a evasion portion 43 corresponding to the material-reducing section 24, in this embodiment, the evasion portion 43 has an inclined surface to form a gap with the material-reducing section 24, the evasion portion 50 does not interfere with each other during bending the evasion portion 50, the evasion portion 50 and the position-limiting portion 30 abut against opposite sides of the piston member 40 in an axial direction a, the position-limiting portion 30 does not protrude the arc-shaped curved groove in the axial direction a, the piston member 40 is wrapped around the position-limiting portion 30 to prevent the position-limiting portion 30 from deforming and escaping from the annular groove 23, has stable supporting force and binding property.

The reverse-folding limiting section 50 is located at the ring end edge of one end of the main tube 20, one side of the reverse-folding limiting section 50 is provided with a supporting wall 51 supporting against the piston member 40 and an inclined guide ring wall 52 located at the opposite side of the supporting wall 51, and the inclined guide ring wall 52 is used for pressing a workpiece (such as stamping, extrusion molding, etc., but not limited thereto), so that the reverse-folding limiting section 50 can be smoothly deformed after being pressed. The abutting wall 51 is an inclined wall, and the abutting wall 51 gradually extends radially outward from an end close to the limiting portion 30 to a terminal of the reverse-folding limiting section 50, so as to facilitate bending deformation under pressure.

The shock absorber 1 further includes an elastic member 60, the main tube 20 is further provided with a receiving slot 25, one end of the elastic member 60 is elastically abutted to the receiving slot 25, and the other end of the elastic member is elastically abutted to the outer tube 10, in other embodiments, an air spring can be used to replace the elastic member, the receiving slot 25 is provided with a port 251 which is open towards the axial direction a, and the inclined guide ring wall 52 forms the port 251; the main tube 20 has a tapered section 26 between the annular groove 23 and the reverse-folded position-limiting section 50, an outer diameter of the tapered section 26 is tapered from the annular groove 23 toward the reverse-folded position-limiting section 50, the tapered section 26 has an inclined guide surface 261, and the piston member 40 can be smoothly installed on the piston member 40 through the tapered section 26.

The invention further relates to an assembling method of the shock absorber, which comprises the following steps: step S1: mounting the limiting portion 30 on the main pipe 20; step S2: pushing (sleeving) the piston member 40 into the main tube 20 to be located between the position-limiting portion 30 and the reverse-folded position-limiting section 50; and step S3: the reverse-folding limiting section 50 is bent to be reversely folded and pressed on the piston member 40, so as to achieve the purpose of fast assembly and good combination stability of the piston member 40, thereby having high safety.

The shock absorber and the assembling method thereof of the invention use the reverse-folding limiting section and the limiting part to fix the piston piece, thereby achieving fast assembly and good bonding strength.