Automobile shock absorber bushing

Abstract

The automobile shock absorber bushing comprises an inner lining pipe, a rubber gasket and an outer pipe, the rubber gasket comprises an upper rubber mat, a lower rubber mat and a connecting rubber mat, an annular inner groove is formed in the middle of the outer wall of the inner lining pipe, the connecting rubber mat is arranged in the inner groove, a thread matching portion is arranged on the outer wall of the connecting rubber mat, and a spiral installation portion is arranged in an inner cavity of the outer pipe. The outer pipe is positioned on the outer wall of the lining pipe through threaded fit of the threaded fit portion and the spiral installation portion, conical grooves are formed in the upper bottom face and the lower bottom face of the outer pipe, fit grooves are formed in the inner bottom faces of the conical grooves, the upper rubber mat and the lower rubber mat are arranged to be conical hollow rubber mat bodies matched with the conical grooves, and embedding grooves are formed in the upper rubber mat and the lower rubber mat. The shock absorber bushing is easy to assemble, all parts are detachably designed, the production cost is reduced, the shock absorption effect of the bushing is good, and the bushing is easy to detect and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorber equipment, in particular to a shock absorber bushing for an automobile. Background Art

[0002] Shock absorbers are used to suppress the shock generated by the rebound of spring shock absorption and some impacts from the road surface. Shock absorbers are widely used in automobiles. The shock absorber ring bushing currently used usually has the following structure: it is composed of a bushing inner tube and vulcanized rubber vulcanized on the outer circle of the bushing inner tube. When installing, the vulcanized rubber is directly pressed into the inner hole of the ring.

[0003] Patent publication number CN213451455U discloses an automobile shock absorber bushing, which proposes that the bushing composed of vulcanized rubber, inner tube and other structures has low strength and is not conducive to assembly. The lifting ring bushing is easy to fall out after being pressed into the lifting ring, and the anti-fallout force is small. The torque stiffness of vulcanized rubber is not high and cannot withstand a large tightening torque, resulting in an inability to withstand a large radial load. The wear resistance of the bushing is poor and the service life is short. Therefore, we propose an improved assembled shock absorber bushing to improve the shortcomings of the existing bushing. Utility Model Content

[0004] The utility model aims to provide an automobile shock absorber bushing designed to solve the deficiencies of the above-mentioned technology.

[0005] The automobile shock absorber bushing designed by the utility model comprises an inner liner tube, a rubber liner and an outer tube, the rubber liner comprises an upper rubber pad, a lower rubber pad and a connecting rubber pad, an annular inner groove is provided in the middle of the outer wall of the inner liner tube, the connecting rubber pad is placed in the inner groove, and a threaded matching portion is provided on the outer wall of the connecting rubber pad, a spiral mounting portion is provided in the inner cavity of the outer tube, and the outer tube is positioned on the outer wall of the inner liner tube through the threaded matching of the threaded matching portion and the spiral mounting portion, the upper and lower bottom surfaces of the outer tube are both provided with a conical groove, and a matching groove is opened on the inner bottom surface of the conical groove, the upper rubber pad and the lower rubber pad are both configured as a conical hollow rubber pad body adapted to the conical groove, and the upper rubber pad and the lower rubber pad are both provided with an inlay groove, the upper rubber pad and the lower rubber pad are formed with a clamping portion at the outer end of the inlay groove, the inner cavity of the matching groove is formed with a clamping protrusion, the clamping portion is inserted into and completely fits in the matching groove, and at the same time, the inlay groove and the clamping protrusion fit and abut against each other;

[0006] The automobile shock absorber bushing designed by the utility model also includes a sealing cover body, which includes a mounting thread at the bottom, mounting grooves are opened at the inner cavity edges of the outer ends of the upper rubber pad and the lower rubber pad, and threaded parts are provided at positions corresponding to the mounting grooves on the outer wall of the inner liner tube, and the mounting threads at the bottom of the sealing cover body are inserted into and screwed into the threaded parts at both ends of the inner liner tube.

[0007] One end of the inner cavity of the liner tube is provided with a positioning thread, and the frame connecting rod is provided with a matching thread corresponding to the positioning thread. After the frame connecting rod is inserted into the liner tube, the positioning thread and the matching thread are threadedly connected to achieve positioning.

[0008] The inner lining tube includes a main body and a positioning tube, wherein the positioning tube is fitted and fixedly installed on one side of the inner cavity of the main body, and a fixed lining tube is fitted and fixedly installed in the inner cavity of the positioning tube on this side, and a sliding lining tube is fitted and slidably installed on the other side of the inner cavity of the positioning tube. The outer end of the sliding lining tube extends out of the positioning tube and a slide plate is fixedly installed. The diameter of the slide plate is the same as the diameter of the inner cavity of the main body. The length of the positioning tube is less than the length of the main body. The positioning tube is formed with a step surface on one side of the inner cavity of the main body, and an elastic member is provided on the step surface, and the tail end of the elastic member is fixedly installed with the slide plate at the outer end of the sliding lining tube. After the frame connecting rod is installed in place, the sliding lining tube compresses the elastic member so that the end of the sliding lining tube and the end of the fixed lining tube are limited.

[0009] The outer wall diameter of the positioning tube is smaller than the inner cavity diameter of the main body, and a gap is formed between the two. The positioning tube is provided with multiple connecting blocks in the gap. The multiple connecting blocks are fixedly connected to the inner cavity of the main body and the outer wall of the positioning tube. A limit plate is fixedly installed on the step surface of the positioning tube. The positioning tube is fixedly installed on the inner cavity of the main body through the limit plate and multiple connecting blocks. The limit plate, the inner cavity of the main body, the sliding liner and the slide plate form a buffer space for the sliding liner to move up and down.

[0010] The elastic member is arranged as a spring, and two ends of the spring are respectively fixedly mounted on the limit plate and the slide plate of the sliding liner.

[0011] The outer end surface of the sealing cover is provided with a tightening groove.

[0012] The automobile shock absorber bushing designed by the utility model acts on one end of the outer tube through the inner sides of the upper rubber pad and the lower rubber pad respectively, and the two ends act simultaneously to position the outer tube, and at the same time, the outer tube is connected with the outer end of the connecting rubber pad by thread, and the above-mentioned clamping part, the clamping protrusion and the corresponding matching groove and the embedded groove are combined to prevent the outer tube from falling off the inner liner tube as a whole, and has a good buffering effect. Compared with the prior art, the shock absorber bushing designed in this embodiment is simple to assemble, and each part is detachable, the production cost is reduced, and the bushing has a good shock absorbing effect, and the bushing is also easy to detect and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure;

[0014] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure with 1 / 4 of the top cut off;

[0015] Figure 3It is a structural schematic diagram of the rubber pad part and the outer tube part;

[0016] Figure 4 It is a structural schematic diagram of the inner liner pipe;

[0017] Figure 5 It is a schematic diagram of the structure after the frame connecting rod is installed.

[0018] In the figure: 1. tightening groove; 2. sealing cover body; 3. upper rubber pad; 4. outer tube; 5. lower rubber pad; 6. positioning thread; 7. inner liner; 71. main body; 72. positioning tube; 9. mounting thread; 10. connecting rubber pad; 11. mounting groove; 12. buffer space; 13. spiral mounting part; 14. gap; 15. fixed liner; 16. sliding liner; 17. embedding groove; 18. matching groove; 19. thread matching part; 20. limit plate; 21. frame connecting rod; 22. spring; 23. matching thread. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0020] Embodiment 1:

[0021] like Figure 1-4 As shown, the automobile shock absorber bushing described in this embodiment includes an inner lining tube 7, a rubber liner and an outer tube 4, wherein the inner cavity of the inner lining tube 7 is installed with the frame connecting rod 21, and the outer tube 4 is connected to the end of the shock absorber.

[0022] The rubber pad includes an upper rubber pad 3, a lower rubber pad 5 and a connecting rubber pad 10. An annular inner groove is provided in the middle of the outer wall of the inner liner tube 7. The connecting rubber pad 10 is placed in the inner groove, and a threaded fitting portion 19 is provided on the outer wall of the connecting rubber pad 10. The inner cavity of the outer tube 4 is provided with a spiral mounting portion 13. The outer tube 4 is positioned on the outer wall of the inner liner tube 7 through the threaded fitting portion 19 and the spiral mounting portion 13. The upper and lower bottom surfaces of the outer tube 4 are both provided with conical grooves, and a matching groove 18 is opened on the inner bottom surface of the conical groove. The upper rubber pad 3 and the lower rubber pad 5 are both configured to be conical hollow rubber pads adapted to the conical groove, and the upper rubber pad 3 and the lower rubber pad 5 are The pads 5 are provided with an embedding groove 17, the upper rubber pad 3 and the lower rubber pad 5 are formed with a snap-in portion at the outer end of the embedding groove 17, and the inner cavity of the matching groove 18 is formed with a snap-in protrusion, the snap-in portion is inserted and completely fits in the matching groove 18, and the embedding groove 17 and the snap-in protrusion are fitted and abutted against each other; the shock absorber bushing also includes a sealing cover body 2, the sealing cover body 2 includes a mounting thread 9 at the bottom, the upper rubber pad 3 and the lower rubber pad 5 are provided with a mounting groove 11 at the inner cavity edge of the outer end, a threaded portion is provided at a position corresponding to the mounting groove 11 on the outer wall of the inner liner tube 7, and the mounting thread 9 at the bottom of the sealing cover body 2 is inserted and screwed into the threaded portions at both ends of the inner liner tube 7;

[0023] In the above embodiment, the overall assembly method of the bushing is to first install the connecting rubber pad 10 in the inner groove. The connecting rubber pad 10 is made of rubber material and can be inserted from one end of the inner liner tube 7 during installation. During this process, the connecting rubber pad 10 will elastically deform; then the outer tube 4 is inserted from one end of the inner liner tube 7. The inner cavity diameter of the outer tube 4 is slightly larger than the outer wall diameter of the inner liner tube 7. After the outer tube 4 is inserted, it contacts the threaded mating part 19 of the connecting rubber pad 10 and is gently screwed in to avoid operating too quickly, which may cause the connecting rubber pad 10 to deform too much and fail to threadably fit (the rubber type used for the connecting rubber pad 10 should have a certain hardness to prevent the connecting rubber pad 10 from deforming too much and failing to threadably fit with the outer tube 4). After the outer tube 4 is inserted, the upper rubber pad 3 and the lower rubber pad 5 are inserted on both sides respectively. After inserting, the locking portion is inserted and completely fits in the matching groove 18, and at the same time, the engaging groove 17 fits and abuts against the locking protrusion to form a Figure 2In the state shown, at this time, the sealing cover body 2 is threadedly installed above the upper rubber pad 3 and below the lower rubber pad 5. At this time, the upper and lower sealing cover bodies 2 are threadedly installed, so the upper rubber pad 3 and the lower rubber pad 5 have a limiting effect. The inner sides of the upper rubber pad 3 and the lower rubber pad 5 act on one end of the outer tube 4 respectively. The two ends act simultaneously to position the outer tube 4. At the same time, the outer tube 4 is threadedly connected with the outer end of the connecting rubber pad 10, and the above-mentioned clamping part, the clamping protrusion and the corresponding matching groove 18 and the embedded groove 17 are combined to prevent the outer tube 4 from falling off the inner liner tube 7. Therefore, in this embodiment, the shock absorber bushing is designed to be detachable as a whole. The outer tube 4 and the end of the shock absorber are welded or fixedly installed with screws. After installation, the inner connecting part of the outer tube 4 is a rubber liner, which has a good buffering effect. Compared with the prior art, for example, a vehicle shock absorber bushing disclosed in publication number CN213451455U, whose rubber layer is directly fixed on the inner tube and the outer tube through a vulcanization process, such bushing needs vulcanization equipment for overall fixation during production, and this operation process brings about a large cost. Meanwhile, after use, due to the different durability of rubber and metal, rubber is prone to hardening, breaking and other problems after its durability decreases, which makes it more troublesome to replace. Moreover, after the rubber is fixed by vulcanization, it is not easy to recycle after being removed. The shock absorber bushing designed in this embodiment is simple to assemble, and each part is detachable, so the production cost is reduced, the shock absorbing effect of the bushing is better, and the bushing is also easy to detect and repair.

[0024] In order to prevent the outer tube 4 from falling off, the contact area between the engaging grooves 17 on the upper rubber pad 3 and the lower rubber pad 5 and the matching grooves 18 on the outer tube 4 can be enlarged, for example, the depths of the engaging grooves 17 and the matching grooves 18 can be increased, and screws can also be screwed into the outer wall of the outer tube 4, and the screws can be directly driven into the upper rubber pad 3 and the lower rubber pad 5 or the connecting rubber pad 10 to ensure stable installation.

[0025] For the shock absorber bushing, there should be a good dust-proof environment when it is installed with the frame connecting rod 21. If the dust-proof effect is poor during assembly, dust will accumulate between the inner liner tube 7 and the frame connecting rod 21 after installation, thereby generating a gap. This has a certain impact on the stability after installation. In order to reduce this impact, a positioning thread 6 is provided at one end of the inner cavity of the inner liner tube 7, and the frame connecting rod 21 is provided with a matching thread 23 corresponding to the positioning thread 6. After the frame connecting rod 21 is inserted into the inner liner tube 7, the positioning is achieved by the threaded connection of the positioning thread 6 and the matching thread 23. The inner lining tube 7 includes a main body 71 and a positioning tube 72, wherein the positioning tube 72 is fitted and fixedly installed on one side of the inner cavity of the main body 71, and the positioning tube 72 is fitted and fixedly installed with a fixed lining tube 15 in the inner cavity of the side, and a sliding lining tube 16 is fitted and slidably installed on the other side of the inner cavity of the positioning tube 72, and the outer end of the sliding lining tube 16 extends out of the positioning tube 72 and is fixedly installed with a slide plate, the diameter of the slide plate is the same as the diameter of the inner cavity of the main body 71, the length of the positioning tube 72 is smaller than the length of the main body 71, and the positioning tube 72 is formed with a step surface on one side of the inner cavity of the main body 71, and an elastic member is provided on the step surface, and the tail end of the elastic member is fixedly installed with the slide plate at the outer end of the sliding lining tube 16. After the frame connecting rod 21 is installed in place, the sliding lining tube 16 compresses the elastic member so that the end of the sliding lining tube 16 is abutted against the end of the fixed lining tube 15 for limiting. The preferred elastic member in this embodiment is set as a spring 22, and the two ends of the spring 22 are respectively fixedly installed on the limit plate 20 and the slide plate of the sliding lining tube 16, which can be referred to Figure 4 Therefore, during installation, the frame connecting rod 21 is first inserted into the sliding bushing 16 in the main body 71, and the frame connecting rod 21 fits with the sliding bushing 16. After the front end of the frame connecting rod 21 is inserted, the frame connecting rod 21 is provided with a matching thread 23 at the installation position (such as Figure 5 As shown), the bushing is rotated as a whole, so that the matching thread 23 and the positioning thread are threadedly matched, and the mounting part of the frame connecting rod 21 will push the slide plate of the sliding bushing 16 upward, Figure 5 The schematic diagram shows that the sliding liner 16 and the fixed liner 15 are restrained against each other at this time. Through such installation method, it can be seen that the inner cavity of the inner liner 7 is in a relatively closed installation environment as a whole, and the frame connecting rod 21 is tightly fitted with the sliding liner 16 and the fixed liner 15 during installation, so it is difficult for dust to enter during the installation process, so it will not affect the use of the shock absorber bushing.

[0026] In this embodiment, the outer wall diameter of the positioning tube 72 is smaller than the inner cavity diameter of the main body 71, and a gap 14 is formed between the two. The positioning tube 72 is provided with a plurality of connecting blocks in the gap 14, and the plurality of connecting blocks are fixedly connected to the inner cavity of the main body 71 and the outer wall of the positioning tube 72. The positioning tube 72 is fixedly installed with a limiting plate 20 on the step surface. The positioning tube 72 is fixedly installed on the inner cavity of the main body 71 through the limiting plate 20 and a plurality of connecting blocks. The limiting plate 20, the inner cavity of the main body 71, the sliding liner 16 and the slide plate form a buffer space 12 for the sliding liner 16 to move up and down. Therefore, when in use, when the frame connecting rod 21 is installed in the positioning tube 72, noise may be generated. Therefore, it can be seen that the gap 14 can have a certain sound insulation effect.

[0027] In this embodiment, a tightening groove 1 is provided on the outer end surface of the sealing cover body 2 to facilitate the installation of the sealing cover body 2.

[0028] When the bushing of this embodiment is used, the connecting rubber pad 10 is first installed in the inner groove, and then the outer tube 4 is inserted from one end of the inner liner tube 7, and the upper rubber pad 3 and the lower rubber pad 5 are inserted on both sides respectively. After inserting, the clamping part is inserted and completely fits in the matching groove 18, and the engaging groove 17 fits and abuts against the clamping protrusion. Then, the upper rubber pad 3 and the lower rubber pad 5 are threadedly installed on the sealing cover body 2, which has a limiting effect on the upper rubber pad 3 and the lower rubber pad 5. The inner sides of the upper rubber pad 3 and the lower rubber pad 5 act on one end of the outer tube 4 respectively. The two ends act at the same time to position the outer tube 4. At the same time, the outer tube 4 is threadedly connected with the outer end of the connecting rubber pad 10, and then the clamping effect of the above-mentioned clamping part, the clamping protrusion and the corresponding matching groove 18 and the engaging groove 17 makes the outer tube 4 as a whole unable to fall off the inner liner tube 7. The bushing of this embodiment has a good buffering effect. Compared with the prior art, the shock absorber bushing designed in this embodiment is simple to assemble, and each part is detachable, which reduces the production cost. The bushing has a better shock absorption effect and is easy to detect and maintain.

[0029] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. A vehicle shock absorber bushing, comprising an inner liner tube (7), a rubber liner and an outer tube (4), characterized in that: The rubber pad comprises an upper rubber pad (3), a lower rubber pad (5) and a connecting rubber pad (10); an annular inner groove is provided in the middle of the outer wall of the inner liner tube (7); the connecting rubber pad (10) is placed in the inner groove; a threaded fitting portion (19) is provided on the outer wall of the connecting rubber pad (10); a spiral mounting portion (13) is provided in the inner cavity of the outer tube (4); the outer tube (4) is positioned on the outer wall of the inner liner tube (7) through the threaded fitting portion (19) and the spiral mounting portion (13); and the upper and lower bottom surfaces of the outer tube (4) are both provided with conical grooves. , and a matching groove (18) is opened on the inner bottom surface of the conical groove, the upper rubber pad (3) and the lower rubber pad (5) are both configured as conical hollow rubber pads adapted to the conical groove, and the upper rubber pad (3) and the lower rubber pad (5) are both provided with an embedding groove (17), the upper rubber pad (3) and the lower rubber pad (5) are formed with a clamping portion at the outer end of the embedding groove (17), the inner cavity of the matching groove (18) is formed with a clamping protrusion, the clamping portion is inserted into and completely fits in the matching groove (18), and at the same time, the embedding groove (17) and the clamping protrusion are in contact with and abut against each other; It also includes a sealing cover body (2), which includes a mounting thread (9) at the bottom, a mounting groove (11) is opened at the inner cavity edge of the outer end of the upper rubber pad (3) and the lower rubber pad (5), and a threaded portion is provided at a position corresponding to the mounting groove (11) on the outer wall of the inner liner tube (7), and the mounting thread (9) at the bottom of the sealing cover body (2) is inserted into and screwed into the threaded portions at both ends of the inner liner tube (7).

2. The automobile shock absorber bushing according to claim 1, characterized in that: One end of the inner cavity of the inner liner tube (7) is provided with a positioning thread (6), and the frame connecting rod (21) is provided with a matching thread (23) corresponding to the positioning thread (6). After the frame connecting rod (21) is inserted into the inner liner tube (7), the positioning is achieved by threaded connection between the positioning thread (6) and the matching thread (23).

3. The automobile shock absorber bushing according to claim 2, characterized in that: The inner lining tube (7) comprises a main body (71) and a positioning tube (72), wherein the positioning tube (72) is fitted and fixedly installed on one side of the inner cavity of the main body (71), and a fixed lining tube (15) is fitted and fixedly installed in the inner cavity of the positioning tube (72) on this side, and a sliding lining tube (16) is fitted and slidably installed on the other side of the inner cavity of the positioning tube (72), and the outer end of the sliding lining tube (16) extends out of the positioning tube (72) and is fixedly installed with a slide plate, the diameter of the slide plate is the same as the diameter of the inner cavity of the main body (71), the length of the positioning tube (72) is smaller than the length of the main body (71), and the positioning tube (72) is formed with a step surface on one side of the inner cavity of the main body (71), and an elastic member is provided on the step surface, and the tail end of the elastic member is fixedly installed with the slide plate at the outer end of the sliding lining tube (16), and after the frame connecting rod (21) is installed in place, the sliding lining tube (16) compresses the elastic member so that the end of the sliding lining tube (16) and the end of the fixed lining tube (15) are abutted against each other for limiting.

4. The automobile shock absorber bushing according to claim 3, characterized in that: The outer wall diameter of the positioning tube (72) is smaller than the inner cavity diameter of the main body (71), and a gap (14) is formed between the two. The positioning tube (72) is provided with a plurality of connecting blocks in the gap (14), and the plurality of connecting blocks are fixedly connected to the inner cavity of the main body (71) and the outer wall of the positioning tube (72). A limiting plate (20) is fixedly installed on the step surface of the positioning tube (72). The positioning tube (72) is fixedly installed on the inner cavity of the main body (71) through the limiting plate (20) and the plurality of connecting blocks. The limiting plate (20), the inner cavity of the main body (71), the sliding liner (16) and the sliding plate form a buffer space (12) for the sliding liner (16) to move up and down.

5. The automobile shock absorber bushing according to claim 4, characterized in that: The elastic member is configured as a spring (22), and the two ends of the spring (22) are respectively fixedly mounted on the limit plate (20) and the slide plate of the sliding liner (16).

6. The automobile shock absorber bushing according to claim 1, characterized in that: The outer end surface of the sealing cover body (2) is provided with a tightening groove (1).

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