CN217873955U - Dust cover and shock absorber with same - Google Patents
Dust cover and shock absorber with same Download PDFInfo
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- CN217873955U CN217873955U CN202221170244.0U CN202221170244U CN217873955U CN 217873955 U CN217873955 U CN 217873955U CN 202221170244 U CN202221170244 U CN 202221170244U CN 217873955 U CN217873955 U CN 217873955U
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- shock absorber
- dust cover
- peripheral surface
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- sleeve
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Abstract
The utility model provides a dust cover and a shock absorber with the same, wherein the dust cover is externally sleeved on the piston rod and the outer side of the cylinder body of the shock absorber and comprises a cover body and an embedded cylinder part positioned at one end of the cover body, and the embedded cylinder part is used for being embedded and connected with a sleeve part of an upper support of the shock absorber; the inner peripheral surface of the embedding cylinder portion is provided with a first clamping portion used for being connected with the shock absorber buffering block, the first clamping portion is clamped with a groove in the outer side wall of the buffering block, the outer peripheral surface of the embedding cylinder portion is provided with a second clamping portion used for being connected with the sleeve portion, and the second clamping portion is clamped with a buckle protruding towards the inner peripheral side from the sleeve portion. The utility model discloses a dust cover improves assembly efficiency, reduces border size and reduce cost when satisfying dust cover dustproof performance, and the integrative assembly of dust cover and buffer block, has avoided the buffer block to receive extrusion deformation and piston rod looks mutual friction to produce the abnormal sound, still avoids the buffer block to leak outward and influence its life-span simultaneously.
Description
Technical Field
The utility model relates to the technical field of auto-parts, concretely relates to dust cover and have its bumper shock absorber.
Background
With the development of the times, automobiles become an indispensable part in modern life, and a shock absorber in an automobile front sliding column assembly is an important device in the automobile driving process, so that the shock absorber can quickly attenuate the vibration of wheels and an automobile body and improve the driving smoothness and comfort of the automobiles.
Because of the comparatively abominable shock absorber operational environment, the outside all is provided with dust keeper usually, can avoid entering shock absorber oil seal portion such as silt, dust, prevents that oil seal from becoming invalid, shock absorber oil leakage and shock-absorbing function decay or losing.
In the prior art, the dustproof device of the shock absorber has the following installation modes:
(1) After the dustproof cover and the shock absorber buffer block are assembled into a whole, the dustproof cover wraps the buffer block, and the buffer block and the shock absorber piston rod are fixed on the shock absorber in an interference fit manner;
(2) After the dustproof cover and the buffer block are assembled into a whole, the dustproof cover is fixed at the lower part of the buffer block, and the buffer block is in interference fit with the upper support of the shock absorber and is fixed on the upper support;
(3) A groove is additionally arranged on the upper support of the shock absorber and used for fixing a dust cover;
however, the above installation method has at least the following technical problems:
(1): the buffer block is in interference fit with the piston rod, and the buffer block is extruded and deformed to rub with the piston rod to generate abnormal sound in the compression and extension processes of the shock absorber;
(2): the buffer block is exposed outside and is eroded by rainwater for a long time, so that the service life of the buffer block is seriously influenced;
(3): the assembly is complicated, the required space is large, and the cost is high.
In view of the above, it is desirable to design a dust cover and a shock absorber having the same, which improves the conventional situation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical problems in the prior art, and provides a shock absorber dust cover, which enables the dust cover to easily realize the modular assembly with a buffer block and an upper support through the arrangement of a first clamping part and a second clamping part, thereby improving the assembly efficiency, having simple structure and convenient installation, improving the assembly efficiency, reducing the boundary size and lowering the cost while meeting the dustproof performance of the dust cover; and dust cover and the integrative assembly of buffer block have avoided at the bumper shock absorber compression with stretch the in-process, the buffer block receives extrusion deformation and piston rod looks mutual friction to produce the abnormal sound, still avoids the buffer block to leak outward simultaneously, influences its life-span.
In order to solve the technical problem in the background art, the utility model discloses a technical scheme be: there is provided a dust cover fitted over a piston rod and a cylinder block of a shock absorber, the dust cover including a cover body and an engaging cylinder portion provided at one end of the cover body, the engaging cylinder portion being engaged with a sleeve portion of an upper mount of the shock absorber,
the inner peripheral surface of the embedding cylinder part is provided with a first clamping part used for being connected with the shock absorber buffer block, the first clamping part is clamped with the groove on the outer side wall of the buffer block, the outer peripheral surface of the embedding cylinder part is provided with a second clamping part used for being connected with the sleeve part, and the second clamping part is clamped with a buckle protruding towards the inner peripheral side from the sleeve part.
Adopt the dust cover of above-mentioned structure, through first joint portion and the bumper shock absorber buffer block joint of locating the dust cover inner wall, realize the integrative assembly of dust cover and buffer block, the rethread is located the second joint portion of dust cover outer wall and the sleeve part joint of bumper shock absorber upper bracket, realizes the assembly connection of dust cover and upper bracket. The dustproof cover is simple in structure and convenient to install, and can improve the assembly efficiency, reduce the boundary size and reduce the cost while meeting the dustproof performance of the dustproof cover; and, the dust cover parcel buffer block avoids the buffer block to leak outward and influences its life-span, and need not to realize the installation through interference fit with the bumper shock absorber piston rod again under the buffer block has been assembled with the dust cover is integrative, and then has avoided at the bumper shock absorber compression with stretch the in-process, the buffer block receives extrusion deformation and piston rod looks friction production abnormal sound.
Further, the first engaging portion is a projection extending obliquely upward from an inner peripheral surface of the fitting cylinder portion. Will the buffer block is packed into in the dust cover, the recess on the buffer block lateral wall can easily realize with slant ascending bellied joint, the assembly is simple and convenient.
Further, the second engaging portion is an engaging groove formed on an outer peripheral surface of the fitting cylinder portion. The embedded cylinder part is arranged in the sleeve part of the upper support, the clamping groove can be easily clamped with the buckle on the outer wall of the sleeve part, and the assembly is simple and convenient.
Further, the outer peripheral surface of the embedding cylinder portion is provided with clamping grooves distributed along the circumferential direction, one end, facing the inner peripheral side, of each clamping groove protrudes upwards from the inner peripheral surface in an inclined mode to form the first clamping portion, and the opening of each clamping groove faces the outer peripheral side to form the second clamping portion.
Further, the outer diameter dimension of the fitting cylinder portion is not larger than the inner diameter dimension of the sleeve portion, so that the fitting cylinder portion is fitted into the sleeve portion.
Further, gomphosis section of thick bamboo portion with connect through the changeover portion between the cover body, the outer diameter size of changeover portion is greater than the outer diameter size of gomphosis section of thick bamboo portion, the draw-in groove sets up the gomphosis section of thick bamboo portion with between the changeover portion, increase the draw-in groove degree of depth, promote joint stability.
Further, an outer diameter dimension of the transition section is not greater than an inner diameter dimension of the sleeve portion.
Preferably, the outer diameter of the transition section is equal to the inner diameter of the sleeve portion, and when the fitting cylinder portion is engaged with the sleeve portion, the outer circumferential surface of the transition section abuts against the inner circumferential surface of the sleeve portion, so that space occupation is reduced, and assembly stability is ensured.
Further, a connection cylinder portion is arranged at one end of the cover body, which is far away from the embedding cylinder portion, and the connection cylinder portion is sleeved outside the cylinder body and connected with the outer peripheral surface of the cylinder body.
Furthermore, the dust cover is made of plastic.
Further, the dust cover is integrally formed by injection molding.
The utility model also provides a bumper shock absorber, the bumper shock absorber includes above-mentioned dust cover.
The utility model provides a dust cover and have its bumper shock absorber through the first joint portion that is used for with the bumper shock absorber buffer block joint in the setting of dust cover inner wall, realizes the integrative assembly of dust cover and buffer block, through set up the second joint portion that is used for with the sleeve part joint of bumper shock absorber upper bracket at the dust cover outer wall, realize the assembly connection of dust cover and upper bracket. The dust cover can be easily assembled with the buffer block and the upper support in a modularized manner through the first clamping part and the second clamping part, the structure is simple, the installation is convenient, the dustproof performance of the dust cover is met, the assembly efficiency is effectively improved, the boundary size is reduced, and the cost is reduced; and, the dust cover parcel buffer block avoids the buffer block to leak outward and influences its life-span, and need not to realize the installation through interference fit with the bumper shock absorber piston rod again under the buffer block has been assembled with the dust cover is integrative, and then has avoided at the bumper shock absorber compression with stretch the in-process, the buffer block receives extrusion deformation and piston rod looks friction production abnormal sound.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of an assembly structure of a dust cover according to an embodiment of the present invention;
fig. 2 is a schematic view of an assembly structure of a dust cover and a buffer block according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an upper support provided by an embodiment of the present invention;
wherein the reference numbers in the figures correspond to: 1-upper support, 11-base, 12-sleeve part, 121-buckle, 2-dust cover, 21-embedded cylinder part, 211-first clamping part, 212-second clamping part, 22-transition section, 23-cover body, 24-connecting cylinder part, 3-buffer block, 31-groove, 4-piston rod, 5-cylinder body and 6-damping spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example (b):
in the present embodiment, as shown in fig. 1, 2 and 3, a dust cover 2 is externally fitted over a piston rod 4 and a cylinder 5 of a shock absorber, the dust cover 2 includes a cover body 23, an engaging cylinder 21 located at one end of the cover body 23, and a connecting cylinder 24 located at the other end of the cover body 23, the engaging cylinder 21 is adapted to be engaged with a sleeve portion 12 of an upper mount 1 of the shock absorber, and the connecting cylinder 24 is externally fitted over the cylinder 5 and connected to an outer peripheral surface of the cylinder 5. Specifically, the inner peripheral surface of the fitting tube portion 21 is provided with a first engaging portion 211 for connecting to the damper cushion block 3, the first engaging portion 211 is engaged with the concave groove 31 on the outer side wall of the cushion block 3, the outer peripheral surface of the fitting tube portion 21 is provided with a second engaging portion 212 for connecting to the sleeve portion 12, and the second engaging portion 212 is engaged with the engaging piece 121 projecting from the sleeve portion 12 toward the inner peripheral side.
Adopt the dust cover 2 of above-mentioned structure, through first joint portion 211 and the 3 joint of bumper shock absorber buffer block of locating the 2 inner walls of dust cover, realize the integrative assembly of dust cover 2 and buffer block 3, the rethread is located the second joint portion 212 of 2 outer walls of dust cover and the sleeve part 12 joint of bumper shock absorber upper bracket 1, realizes the assembly connection of dust cover 2 and upper bracket 1. Through the arrangement of the first clamping portion 211 and the second clamping portion 212, the dust cover 2 can be easily assembled with the buffer block 3 and the upper support 1 in a modularized mode, the assembling efficiency is improved, the dust cover 2 is simple in structure and convenient to install, the assembling efficiency is improved, the boundary size is reduced, and the cost is reduced while the dust-proof performance of the dust cover 2 is met; and, dust cover 2 parcel buffer block 3 avoids buffer block 3 to leak outward and influences its life-span, and need not again to realize the installation through interference fit with bumper shock absorber piston rod 4 under the condition of buffer block 3 with the integrative assembly of dust cover 2, and then has avoided at bumper shock absorber compression and the in-process that stretches, and buffer block 3 receives extrusion deformation and piston rod 4 looks friction production abnormal sound.
Preferably, in this embodiment, the outer peripheral surface of the fitting cylinder 21 is formed with clamping grooves distributed along the circumferential direction, one end of each clamping groove facing the inner peripheral side protrudes obliquely upward from the inner peripheral surface to form a first clamping portion 211, and an opening of each clamping groove faces the outer peripheral side to form a second clamping portion 212. Only through set up the circumference draw-in groove on the outer peripheral face at gomphosis section of thick bamboo portion 21, the opening side of circumference draw-in groove forms the first joint portion 211 that is used for with upper bracket 1 joint, and the protruding side of circumference draw-in groove forms the second joint portion 212 that is used for with buffer block 3 joint, simplifies production technology, compact structure and integrated level height, improves assembly efficiency, reduces boundary size and reduce cost when satisfying dust cover 2 dustproof performance.
Of course, in possible embodiments, the first clamping portion 211 and the second clamping portion 212 may be provided separately. Specifically, first joint portion 211 is the arch of extending from the inner peripheral surface slant of gomphosis section of thick bamboo portion 21, when packing into dust cover 2 with buffer block 3 in, recess 31 on the lateral wall of buffer block 3 can easily realize with the bellied joint of slant upwards, and the assembly is simple and convenient. Accordingly, the second engaging portion 212 is a engaging groove formed on the outer peripheral surface of the engaging tube portion 21, and when the engaging tube portion 21 is inserted into the sleeve portion 12 of the upper bracket 1, the engaging groove can be easily engaged with the engaging hook 121 on the outer wall of the sleeve portion 12, and the assembly is easy.
Preferably, in the embodiment, the outer diameter of the fitting cylinder portion 21 is not greater than the inner diameter of the sleeve portion 12, and the outer diameter of the cover 23 is greater than the outer diameter of the sleeve portion 12, so that the fitting cylinder portion 21 is fitted into the sleeve portion 12, and the fitting cylinder portion 21 and the sleeve portion are in transition fit, thereby reducing the space occupation, ensuring that the damping spring 6 sleeved outside the dust cover 2 can be designed to be smaller as much as possible, further saving the cost, and enabling the connection part of the cover 23 and the fitting cylinder portion 21 to be abutted against the lower edge of the sleeve portion 12, thereby increasing the sealing performance and the structural stability.
In a possible embodiment, the fitting cylinder part 21 and the cover body 23 are connected through the transition section 22, the outer diameter of the transition section 22 is larger than that of the fitting cylinder part 21, and the clamping groove is arranged between the fitting cylinder part 21 and the transition section 22, so that the depth of the clamping groove is increased, and the clamping stability is improved.
In a possible embodiment, the outer diameter dimension of the transition section 22 is not greater than the inner diameter dimension of the sleeve portion 12. Preferably, the outer diameter of the transition section 22 is equal to the inner diameter of the sleeve portion 12, and when the engaging tube portion 21 engages with the sleeve portion 12, the outer peripheral surface of the transition section 22 abuts against the inner peripheral surface of the sleeve portion 12, and the upper edge of the cover 23 abuts against the lower edge of the sleeve portion 12, so that space occupation is reduced and assembly stability is ensured.
Preferably, the dust cover 2 is made of plastic, and the dust cover 2 is integrally formed by injection molding.
The embodiment of the utility model provides a still provide a bumper shock absorber, the bumper shock absorber includes foretell dust cover 2. Specifically, the shock absorber includes an upper mount 1, a piston rod 4, a cylinder 5, a cushion block 3, a damper spring 6, and the dust cover 2, and as shown in fig. 3, the upper mount 1 includes a base 11 and a sleeve portion 12 located on one side of the base 11, one end of the piston rod 4 sequentially passes through the cushion block 3, the sleeve portion 12, and the base 11, and the other end is inserted into the cylinder 5, the dust cover 2 is externally fitted over the piston rod 4 and the cylinder 5, an engaging cylinder portion 21 of the dust cover 2 is engaged with the sleeve portion 12, a connecting cylinder portion 24 is externally fitted over the cylinder 5 and is connected to an outer peripheral surface of the cylinder 5, and the damper spring 6 is externally fitted over the dust cover 2.
During assembly, firstly, the buffer block 3 is arranged in the dust cover 2, the groove 31 on the outer side wall of the buffer block 3 can be easily clamped with the first clamping portion 211 on the inner peripheral surface of the embedded cylinder portion 21, modular assembly of the buffer block 3 and the dust cover 2 is achieved, then the upper end of the dust cover 2 with the buffer block 3 assembled is arranged, namely the embedded cylinder portion 21 is arranged in the sleeve portion 12 of the upper support 1, along with the embedding of the embedded cylinder portion 21, the buckle 121 on the inner wall of the sleeve portion 12 is easily clamped with the second clamping portion 212 on the outer peripheral surface of the embedded cylinder portion 21, and modular assembly of the dust cover 2 and the upper support 1 is achieved. Preferably, the outer diameter of the engaging cylinder 21 is not larger than the inner diameter of the sleeve 12, so that the engaging cylinder 21 is engaged with the sleeve 12, thereby reducing the space occupation, ensuring that the damping spring 6 externally sleeved on the dust cover 2 can be designed to have a smaller size as much as possible, and further saving the cost, while the outer diameter of the transition section 22 between the engaging cylinder 21 and the cover 23 is equal to the inner diameter of the sleeve 12, when the engaging cylinder 21 is engaged with the sleeve 12, the outer circumferential surface of the transition section 22 is abutted against the inner circumferential surface of the sleeve 12, thereby reducing the space occupation and ensuring the assembly stability.
The utility model provides a dust cover and have its bumper shock absorber through set up at the dust cover inner wall be used for with the first joint portion of bumper shock absorber buffer block joint, realize the integrative assembly of dust cover and buffer block, through set up at the dust cover outer wall be used for with the second joint portion of the sleeve part joint of bumper shock absorber upper bracket, realize the assembly connection of dust cover and upper bracket. The dustproof cover can be easily assembled with the buffer block and the upper support in a modularized manner through the first clamping part and the second clamping part, the structure is simple, the installation is convenient, the dustproof performance of the dustproof cover is met, the assembly efficiency is effectively improved, the boundary size is reduced, and the cost is reduced; and, the dust cover parcel buffer block avoids the buffer block to leak outward and influences its life-span, and need not to realize the installation through interference fit with the bumper shock absorber piston rod again under the buffer block and the integrative assembly's of dust cover the condition, and then avoided at the bumper shock absorber compression with stretch the in-process, the buffer block receives extrusion deformation and piston rod looks friction production abnormal sound.
The above-disclosed embodiments are merely exemplary embodiments of the present invention, which should not be construed as limiting the scope of the invention, but rather as equivalent variations of the invention are covered by the following claims.
Claims (10)
1. A dust cover, its characterized in that: the dust cover (2) is sleeved outside a piston rod (4) and a cylinder body (5) of the shock absorber, the dust cover (2) comprises a cover body (23) and an embedding cylinder part (21) positioned at one end of the cover body (23), the embedding cylinder part (21) is used for being embedded and connected with a sleeve part (12) of an upper support (1) of the shock absorber,
the inner peripheral surface of the embedding tube part (21) is provided with a first clamping part (211) used for being connected with the shock absorber buffering block (3), the first clamping part (211) is clamped with a groove (31) on the outer side wall of the buffering block (3), the outer peripheral surface of the embedding tube part (21) is provided with a second clamping part (212) used for being connected with the sleeve part (12), and the second clamping part (212) is clamped with a buckle (121) protruding towards the inner peripheral side from the sleeve part (12).
2. The dust cap of claim 1, wherein: the first engaging portion (211) is a projection extending obliquely upward from the inner peripheral surface of the fitting cylinder portion (21).
3. The dust cap of claim 1, wherein: the second engaging portion (212) is an engaging groove formed on the outer peripheral surface of the fitting cylinder portion (21).
4. The dust cap of claim 1, wherein: the outer peripheral surface of the embedding cylinder part (21) is provided with clamping grooves distributed along the circumferential direction, one end of each clamping groove facing the inner peripheral side protrudes upwards from the inner peripheral surface in an inclined mode to form the first clamping part (211), and the opening of each clamping groove faces the outer peripheral side to form the second clamping part (212).
5. The dust cap of claim 4, wherein: the outer diameter dimension of the fitting cylinder portion (21) is not greater than the inner diameter dimension of the sleeve portion (12) so that the fitting cylinder portion (21) is fitted into the sleeve portion (12).
6. The dust cap of claim 5, wherein: the fitting cylinder part (21) and the cover body (23) are connected through a transition section (22), the outer diameter of the transition section (22) is larger than that of the fitting cylinder part (21), and the clamping groove is arranged between the fitting cylinder part (21) and the transition section (22).
7. The dust cap of claim 6, wherein: the transition section (22) has an outer diameter dimension that is no greater than an inner diameter dimension of the sleeve portion (12).
8. The dust cap of claim 7, wherein: the outer diameter dimension of the transition section (22) is equal to the inner diameter dimension of the sleeve portion (12), and when the fitting tube portion (21) is engaged with the sleeve portion (12), the outer peripheral surface of the transition section (22) is in contact with the inner peripheral surface of the sleeve portion (12).
9. The dust cap of claim 1, wherein: one end of the cover body (23) far away from the embedding cylinder part (21) is provided with a connecting cylinder part (24), and the connecting cylinder part (24) is sleeved outside the cylinder body (5) and connected with the outer peripheral surface of the cylinder body (5).
10. A shock absorber, characterized by: the shock absorber comprises a dust cap (2) according to any one of the preceding claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221170244.0U CN217873955U (en) | 2022-05-16 | 2022-05-16 | Dust cover and shock absorber with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221170244.0U CN217873955U (en) | 2022-05-16 | 2022-05-16 | Dust cover and shock absorber with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217873955U true CN217873955U (en) | 2022-11-22 |
Family
ID=84090412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221170244.0U Active CN217873955U (en) | 2022-05-16 | 2022-05-16 | Dust cover and shock absorber with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217873955U (en) |
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2022
- 2022-05-16 CN CN202221170244.0U patent/CN217873955U/en active Active
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