CN218207585U - Rear auxiliary frame bushing and vehicle - Google Patents

Abstract

The utility model provides a rear auxiliary frame bushing and a vehicle, belonging to the technical field of vehicle parts, comprising an inner pipe, a rubber connector, an outer pipe, a limiting part and an end cover; the outer pipe is coaxially sleeved outside the inner pipe, the rubber connector is connected between the inner pipe and the outer pipe, a plurality of jacks are symmetrically formed in the rubber connector, and the jacks penetrate through the rubber connector along the axial direction of the inner pipe; the limiting part comprises a connecting frame and a plurality of inserting blocks which are in one-to-one correspondence with the inserting ports, the lower ends of the inserting blocks are connected to the connecting frame, the inserting blocks are inserted into the corresponding inserting ports from the lower part of the rubber connecting body, and convex ribs are arranged on the side wall of each inserting port and/or the peripheral surface of each inserting block; the end cover is arranged at the lower side of the connecting frame. The utility model provides a back sub vehicle frame bush avoids locating part direct and bush main part rigid contact, reduces the area of contact of inserted block and rubber connector simultaneously, effectively improves the problem that back sub vehicle frame bush self produced the collision abnormal sound easily then.

Description

Rear auxiliary frame bushing and vehicle

Technical Field

The utility model belongs to the technical field of vehicle parts, concretely relates to back sub vehicle frame bush and vehicle.

Background

With the progress of the automobile industry, people's demands for automobiles exceed the scope of simple transportation tools, and have higher requirements for the driving comfort of the whole automobile. NVH (noise, vibration, and acoustic harshness) performance of vehicles is an important factor affecting ride comfort, and thus the functional demand as a rubber bushing for vibration/noise reduction is also gradually increasing.

The auxiliary frame is a framework connecting the front axle and the rear axle, and mainly has the functions of isolating vibration and noise and reducing the vibration and noise which directly enter a carriage. The all ring edge borders that the sub vehicle frame relates to are complicated, and suspension isotructure generally needs the bush to cushion, and the bush main part of back sub vehicle frame generally comprises inner tube, outer tube and rubber connector, controls the displacement through limit structure's hard spacing (rigid contact), and at the vehicle in-process of traveling (for example the operating mode of turning), the limit structure produces the collision abnormal sound easily and between the bush main part, influences the driving experience.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a back sub vehicle frame bush and vehicle aims at solving current back sub vehicle frame bush and produces the problem of collision abnormal sound easily at the vehicle in-process of traveling.

In order to achieve the purpose, the utility model adopts the technical proposal that:

in a first aspect, a rear subframe bushing is provided, comprising:

the device comprises an inner pipe, a rubber connector, an outer pipe, a limiting piece and an end cover;

the outer pipe is coaxially sleeved outside the inner pipe, the rubber connector is connected between the inner pipe and the outer pipe, a plurality of jacks are symmetrically formed in the rubber connector, and the jacks penetrate through the rubber connector along the axial direction of the inner pipe;

the limiting piece comprises a connecting frame and a plurality of inserting blocks which are in one-to-one correspondence with the inserting holes, the lower ends of the inserting blocks are connected to the connecting frame, the inserting blocks are inserted into the corresponding inserting holes from the lower part of the rubber connecting body, and convex ribs are arranged on the side wall of each inserting hole and/or the peripheral surface of each inserting block;

the end cover is arranged on the lower side of the connecting frame.

With reference to the first aspect, in one possible implementation manner, the connection frame includes:

the plurality of connectors correspond to the inserting blocks one to one and are connected to the lower ends of the corresponding inserting blocks; and

the connecting rods are respectively connected between two adjacent connecting bodies, and a first through space corresponding to the inner cavity of the inner tube is formed among the connecting rods;

the lower end of the inner pipe is provided with a first clamping groove, the lower end of the rubber connector is provided with a second clamping groove corresponding to the first clamping groove, and the first clamping groove and the second clamping groove are clamped with the connecting rod.

With reference to the first aspect, in a possible implementation manner, the insertion block and the connecting body are both hollow members, and supporting reinforcing ribs are disposed in inner cavities of the insertion block and the connecting body.

With reference to the first aspect, in a possible implementation manner, an orthographic projection area of the insert block on a plane perpendicular to the up-down direction is defined as a cross-sectional area, and the cross-sectional area is gradually reduced from bottom to top.

With reference to the first aspect, in a possible implementation manner, the inner wall of the inner tube is formed with a plurality of mounting grooves, and the mounting grooves are distributed along the circumferential direction of the inner tube;

the end cover middle part form with the second that the inner chamber of inner tube corresponds link up the space, the edge that the second link up the space upwards extend form with the eye-splice of pegging graft from top to bottom of mounting groove, the both sides of eye-splice upper end form the butt arch respectively, the butt arch with the lateral wall butt of mounting groove.

With reference to the first aspect, in a possible implementation manner, a plurality of convex buffering protrusions are formed at the upper end of the rubber connector along the circumferential direction of the rubber connector, and the upper surfaces of the buffering protrusions are arc-shaped.

With reference to the first aspect, in one possible implementation manner, the rib is a strip-shaped rib extending in an up-down direction.

With reference to the first aspect, in a possible implementation manner, first oblique flanges extending outward are respectively formed on opposite sides of the lower end of the inner tube, second oblique flanges extending outward are respectively formed on opposite sides of the lower end of the outer tube, the second oblique flanges correspond to the first oblique flanges one to one, and the lower end of the rubber connecting body is connected to the first oblique flanges and the second oblique flanges;

the two opposite sides of the inner pipe are respectively provided with a plain surface, and the distribution paths of the two plain surfaces are vertical to the distribution paths of the two first inclined flanges.

With reference to the first aspect, in one possible implementation manner, a lightening hole is formed in the side wall of the inner pipe.

Compared with the prior art, the scheme shown in the embodiment of the application has the advantages that the inner pipe, the rubber connector and the outer pipe form the bushing main body, the bushing main body is limited through the matching of the socket and the inserting block, and the rubber connector has better elasticity relative to the inner pipe and the outer pipe, so that the inserting block is prevented from directly making rigid contact with other rigid components on the premise of meeting the requirement of a limiting function; through setting up protruding muscle for area of contact between inserted block and the socket lateral wall is littleer, and inserted block and socket lateral wall can produce certain cushioning effect in the contact process, avoid the large tracts of land collision contact to produce great sound. The utility model provides a back sub vehicle frame bush avoids the direct and bush main part rigid contact of locating part, reduces the area of contact of inserted block and rubber connector simultaneously, effectively improves the problem that back sub vehicle frame bush self produced the collision abnormal sound easily then.

In a second aspect, the embodiment of the present invention further provides a vehicle, including the above-mentioned rear subframe bushing.

Compared with the prior art, the scheme shown in the embodiment of the application improves the problem that the rear auxiliary frame bushing is easy to generate collision abnormal sound by adopting the rear auxiliary frame bushing, and improves the driving experience.

Drawings

Fig. 1 is a schematic perspective view of a rear subframe bushing according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a rear subframe bushing according to an embodiment of the present invention;

fig. 3 is a perspective view of a rear subframe bushing according to an embodiment of the present invention;

fig. 4 is a sectional view of an assembly structure of an end cap, an inner tube and a limiting member adopted in the embodiment of the present invention;

fig. 5 is a schematic perspective view of an end cap according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a first position limiting element according to an embodiment of the present invention;

fig. 7 is a schematic three-dimensional structure diagram of a limiting member according to an embodiment of the present invention;

FIG. 8 is a schematic view of an assembly structure of an outer tube, an inner tube and a rubber connector according to an embodiment of the present invention;

fig. 9 is a schematic view of an assembly structure of the outer tube, the inner tube, the rubber connector and the stopper according to the embodiment of the present invention.

Description of the reference numerals:

100. an inner tube; 10a, a first clamping groove; 10b, mounting grooves; 10c, cutting plane; 10d, lightening holes; 110. a first inclined flanging;

200. a rubber connector; 20a, a socket; 20b, a second clamping groove; 210. a buffer protrusion;

300. an outer tube; 310. second oblique flanging;

400. a limiting member; 410. a connecting frame; 41a, a first through space; 411. a linker; 412. a connecting rod; 420. inserting a block; 430. supporting reinforcing ribs;

500. an end cap; 50a, a second through space; 510. inserting and buckling; 511. an abutment projection;

600. and (5) convex ribs.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the description and the drawings of the present invention, the terms "up" and "down" are the same as the up-down direction of the vehicle body, the terms "front" and "rear" are the same as the front-rear direction of the vehicle body, the terms "left" and "right" are the same as the left-right direction of the vehicle body, the term "inner" refers to the direction toward the center axis of the inner tube 100, and vice versa; unless otherwise specifically limited, the terms "central," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "peripheral," "clockwise," "counterclockwise," "high," "low," and the like, when used in the sense of indicating an orientation or positional relationship, are based on the orientation and positional relationship as shown in the drawings and are intended only for convenience in describing the invention and for simplicity of description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the scope of the invention.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the term "fixedly connected" or "fixedly connected" is used, which is to be understood broadly, that is, any connection mode without displacement relation or relative rotation relation between the two, that is, including non-detachably fixed connection, integrated connection and fixed connection through other devices or elements.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Referring to fig. 1 to 3 and fig. 6 to 8 together, the rear subframe bushing according to the present invention will now be described. The rear subframe bushing comprises an inner pipe 100, a rubber connecting body 200, an outer pipe 300, a limiting member 400 and an end cover 500; the outer tube 300 is coaxially sleeved outside the inner tube 100, the rubber connector 200 is connected between the inner tube 100 and the outer tube 300, a plurality of sockets 20a are symmetrically arranged on the rubber connector 200, and the sockets 20a penetrate through the rubber connector 200 along the axial direction of the inner tube 100; the limiting member 400 comprises a connecting frame 410 and a plurality of inserting blocks 420 corresponding to the inserting holes 20a one by one, the lower ends of the inserting blocks 420 are connected to the connecting frame 410, the inserting blocks 420 are inserted into the corresponding inserting holes 20a from the lower part of the rubber connecting body 200, and convex ribs 600 are arranged on the side walls of the inserting holes 20a and/or the peripheral surfaces of the inserting blocks 420; the end cap 500 covers the lower side of the connection frame 410.

In the present embodiment, the number of the inserting holes 20a is exemplarily shown as two, but it should be understood that the number of the inserting holes 20a can satisfy the limit requirement of the suspension, and is not limited herein.

In this embodiment, the outer tube 300 and the inner tube 100 are both metal members. More specifically, the two are preferably made of aluminum alloy, so that the weight of the outer pipe 300 and the weight of the inner pipe 100 can be reduced, and the design requirements of light weight of the whole vehicle, carbon emission reduction and large-proportion material recovery are better met.

In this embodiment, the rubber connector 200 is a high-damping rubber member, so that the bushing is designed to have high damping and low dynamic stiffness, the vibration absorption capability of the bushing can be increased, and the riding comfort can be improved. The connection between the rubber connector 200 and the outer tube 300 and the connection between the rubber connector 200 and the inner tube 100 include, but are not limited to, integral vulcanization bonding.

In this embodiment, the limiting member 400 is made of a material including, but not limited to, nylon material, so as to reduce the weight of the limiting member 400, and better adapt to the design requirements of light weight of the entire vehicle, reduction of carbon emission, and recovery of a large proportion of materials.

In this embodiment, the arrangement of the ribs 600 includes the following: 1) The rib 600 is provided only on the inner wall of the socket 20 a; 2) The convex rib 600 is arranged on the outer circumferential surface of the insert block 420; 3) The ribs 600 are provided on both the inner wall of the socket 20a and the outer peripheral surface of the insert 420, and at this time, the ribs 600 on the socket 20a and the ribs 600 on the insert 420 are arranged in a staggered manner in the circumferential direction of the insert 420, that is, the ribs 600 on the socket 20a contact with the outer peripheral surface of the insert 420, and the ribs 600 on the insert 420 contact with the side wall of the socket 20 a.

Compared with the prior art, the rear subframe bushing provided by the embodiment has the advantages that the inner pipe 100, the rubber connector 200 and the outer pipe 300 form a bushing main body, the bushing main body is limited through the matching of the socket 20a and the insert block 420, and the rubber connector 200 has better elasticity relative to the inner pipe 100 and the outer pipe 300, so that the insert block 420 is prevented from being in direct rigid contact with other rigid components on the premise of meeting the requirement of a limiting function; through setting up protruding muscle 600 for area of contact between inserted block 420 and the socket 20a lateral wall is littleer, and inserted block 420 and socket 20a lateral wall can produce certain cushioning effect in the contact process, avoids the large tracts of land collision contact to produce great sound. This embodiment avoids direct and the bush main part rigid contact of locating part 400, reduces the area of contact of inserted block 420 and rubber connector 200 simultaneously, then effectively improves the problem that back sub vehicle frame bush self produced the collision abnormal sound easily.

Referring to fig. 1, 3, 6 to 8, in order to reduce the manufacturing difficulty and facilitate the molding and demolding of the rubber connector 200, the rib 600 is a strip-shaped rib extending in the up-down direction.

Other embodiments of the ribs 600 are not shown, such as dot-shaped ribs, grid-shaped ribs, etc., which can satisfy the requirement of reducing the contact area between the plug 420 and the rubber connector 200, and are not listed here.

In some embodiments, the connecting frame 410 may be configured as shown in fig. 3, 6, 7 and 9. Referring to fig. 3, 6, 7 and 9, the link frame 410 includes a plurality of link bodies 411 and a plurality of links 412; the connecting bodies 411 correspond to the insert blocks 420 one by one and are connected to the lower ends of the corresponding insert blocks 420; the connecting rods 412 are connected between two adjacent connecting bodies 411, and a first through space 41a corresponding to the inner cavity of the inner tube 100 is formed between the connecting rods 412; the lower end of the inner tube 10 is formed with a first clamping groove 10a, the lower end of the rubber connector 200 is formed with a second clamping groove 20b corresponding to the first clamping groove 10a, and both the first clamping groove 10a and the second clamping groove 20b are clamped with the connecting rod 412. The connecting frame 410 of the embodiment has a simple and compact structure, so that the functional requirements of connecting a plurality of inserting blocks 420 through the same connecting frame 410 are met, the integrity of the limiting member 400 is met, and the first through space 41a also forms a clearance for the mounting of structures such as a suspension and the like, thereby avoiding the influence on subsequent assembling. In addition, the first clamping groove 10a and the second clamping groove 20b are arranged, so that the connecting frame 410 can be conveniently positioned, the connecting frame 410 can be positioned in the process of inserting the inserting block 420, and the assembling process is simple. In practical implementation, the first clamping groove 10a and the second clamping groove 20b are both opened downwards.

The structure shown in fig. 7 is adopted on the basis of the above-described embodiment. Referring to fig. 7, in order to further reduce the weight of the part, the insert block 420 and the connecting body 411 are both hollow components, and correspondingly, in order to ensure the overall structural strength of the limiting member 400, supporting reinforcing ribs 430 are respectively arranged in the inner cavities of the insert block 420 and the connecting body 411, so that collapse and deformation of the insert block 420 and the connecting body 411 during use are avoided. The supporting ribs 430 in the insertion block 420 and the supporting ribs 430 in the connector 411 may be integrally or separately provided.

In some embodiments, the orthographic projection area of the insert block 420 on the plane perpendicular to the up-down direction is defined as a cross-sectional area, and the cross-sectional area is gradually reduced from bottom to top, so that the outer peripheral surface of the insert block 420 forms an inclined surface, which is beneficial to drawing the mold during the molding process of the limiting member 400, and is beneficial to further reducing the contact area between the insert block 420 and the socket 20a, further avoiding the generation of collision abnormal sound, and simultaneously reducing the assembling force value.

In some embodiments, referring to fig. 1 to 5, 8 and 9, the inner wall of the inner tube 100 is formed with a plurality of mounting grooves 10b, and the plurality of mounting grooves 10b are distributed along the circumferential direction of the inner tube 100, so as to meet the requirements of assembly with a structure such as a suspension. The middle of the end cap 500 forms a second through space 50a corresponding to the inner cavity of the inner tube 100 to avoid interference with structures such as suspension, the edge of the second through space 50a extends upwards to form a plug-in buckle 510 vertically inserted into the mounting groove 10b, two sides of the upper end of the plug-in buckle 510 form abutting protrusions 511 respectively, and the abutting protrusions 511 abut against the side walls of the mounting groove 10 b. The insert buckle 510 of the present embodiment is inserted into the corresponding mounting groove 10b from the lower side of the inner tube 100, the insert buckle 510 is shaped like a "snake head", after being assembled, the end cap 500 is prevented from falling off by the abutting connection of the abutting protrusion 511 and the side wall of the mounting groove 10b, and meanwhile, the press-fitting force is appropriate, so that the smoothness of the press-fitting of the end cap 500 is ensured. The abutment protrusion 511 of the present embodiment includes, but is not limited to, the illustrated arc-shaped protrusion, which can meet the assembly requirement.

In some embodiments, the rubber connector 200 may be configured as shown in fig. 1 to 3. Referring to fig. 1 to 3, a plurality of convex buffering protrusions 210 are formed at the upper end of the rubber connector 200 along the circumferential direction thereof, and the upper surfaces of the buffering protrusions 210 are arc-shaped. In this embodiment, the upper end of outer tube 300 forms the location turn-ups of inside extension, and this location turn-ups is embedded into the upper end of rubber connector 200, through setting up buffering arch 210, is favorable to buffering whole car in the impact of the highway section of jolting, promotes the travelling comfort of riding to can improve limit function's stability, prolong the holistic life of bush.

Some embodiments employ the structure shown in fig. 1, 3, 8, and 9. Referring to fig. 1, 3, 8 and 9, first oblique flanges 110 extending outward are respectively formed at opposite sides of a lower end of the inner pipe 100, second oblique flanges 310 extending outward are respectively formed at opposite sides of a lower end of the outer pipe 300, the second oblique flanges 310 correspond to the first oblique flanges 110 one by one, and the lower end of the rubber connector 200 is connected to the first oblique flanges 110 and the second oblique flanges 310; two opposite sides of the inner pipe 100 are respectively formed with a flat section 10c, and the distribution path of the two flat sections 10c is perpendicular to the distribution path of the two first inclined flanges 110.

The inner tube 100 and the outer tube 300 of the present embodiment form an inverted Y-shaped structure, which facilitates the manufacturing by the die-casting process, and reduces the manufacturing cost; on the basis of the Y-shaped structure, the inner tube 100 with the two plain surfaces 10c has larger size in the left-right direction to form a I-shaped structure, so that the overall static rigidity of the bushing is favorably optimized, the rubber hardness and the dynamic rigidity are reduced, and the driving comfort is further improved. In addition, the inner tube 100 and the outer tube 300 form an inverted Y-shaped structure, so that the overall axial rigidity of the bushing is improved, the proportional range of the axial rigidity and the radial rigidity is expanded, the adjustment of a chassis of the whole vehicle is facilitated, the overall bushing has lower dynamic rigidity, and the improvement of the axial comfort of the whole vehicle is facilitated.

In some embodiments, referring to fig. 1, weight-reducing holes 10d are formed in the sidewall of the inner tube 100 for better weight-reduction.

Based on the same inventive concept, the embodiment of the application also provides a vehicle, which comprises the rear auxiliary frame bushing.

Compared with the prior art, the vehicle that this embodiment provided, through adopting foretell back sub vehicle frame bush, improve the problem that back sub vehicle frame bush self produced collision abnormal sound easily, promote the driving and experience.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A rear subframe bushing, comprising:

the rubber connecting structure comprises an inner pipe (100), a rubber connecting body (200), an outer pipe (300), a limiting piece (400) and an end cover (500);

the outer pipe (300) is coaxially sleeved outside the inner pipe (100), the rubber connecting body (200) is connected between the inner pipe (100) and the outer pipe (300), a plurality of inserting ports (20 a) are symmetrically formed in the rubber connecting body (200), and the inserting ports (20 a) penetrate through the rubber connecting body (200) along the axial direction of the inner pipe (100);

the limiting piece (400) comprises a connecting frame (410) and a plurality of inserting blocks (420) which correspond to the inserting holes (20 a) in a one-to-one mode, the lower ends of the inserting blocks (420) are connected to the connecting frame (410), the inserting blocks (420) are inserted into the corresponding inserting holes (20 a) from the lower portion of the rubber connecting body (200), and convex ribs (600) are arranged on the side wall of each inserting hole (20 a) and/or the outer peripheral surface of each inserting block (420);

the end cover (500) is arranged on the lower side of the connecting frame (410) in a covering mode.

2. The rear subframe bushing of claim 1 wherein said connecting bracket (410) comprises:

a plurality of connection bodies (411) corresponding to the insertion blocks (420) one to one and connected to the lower ends of the corresponding insertion blocks (420); and

a plurality of connecting rods (412) respectively connected between two adjacent connecting bodies (411), wherein a first through space (41 a) corresponding to the inner cavity of the inner tube (100) is formed between the plurality of connecting rods (412);

a first clamping groove (10 a) is formed at the lower end of the inner tube (100), a second clamping groove (20 b) corresponding to the first clamping groove (10 a) is formed at the lower end of the rubber connector (200), and the first clamping groove (10 a) and the second clamping groove (20 b) are clamped with the connecting rod (412).

3. The rear subframe bushing of claim 2 wherein said insert block (420) and said connecting body (411) are hollow members, and wherein said insert block (420) and said connecting body (411) each have a support rib (430) disposed within an interior cavity thereof.

4. The rear subframe bushing of claim 1 wherein an orthographic area of said insert (420) in a plane perpendicular to the up-down direction is defined as a cross-sectional area, said cross-sectional area decreasing from the bottom to the top.

5. The rear sub frame bushing according to claim 1, wherein the inner wall of the inner tube (100) is formed with a plurality of mounting grooves (10 b), the plurality of mounting grooves (10 b) being distributed along a circumferential direction of the inner tube (100);

end cover (500) middle part form with the second that the inner chamber of inner tube (100) corresponds link up space (50 a), the second link up the edge of space (50 a) upwards extend form with eye-splice (510) of pegging graft from top to bottom in mounting groove (10 b), the both sides of eye-splice (510) upper end form the butt protruding (511) respectively, butt protruding (511) with the lateral wall butt of mounting groove (10 b).

6. The rear sub frame bushing of claim 1, wherein the upper end of the rubber connector (200) is formed with a plurality of upwardly convex buffering protrusions (210) along the circumferential direction thereof, and the upper surfaces of the buffering protrusions (210) are arc-shaped.

7. The rear subframe bushing of claim 1 wherein said rib (600) is a bar-shaped rib extending in an up-down direction.

8. The rear sub frame bushing of claim 1, wherein opposite sides of the lower end of the inner tube (100) are respectively formed with first inclined flanges (110) extending outwardly, opposite sides of the lower end of the outer tube (300) are respectively formed with second inclined flanges (310) extending outwardly, the second inclined flanges (310) correspond to the first inclined flanges (110) one to one, and the lower end of the rubber connector (200) connects the first inclined flanges (110) and the second inclined flanges (310);

the two opposite sides of the inner pipe (100) are respectively provided with a flat section (10 c), and the distribution paths of the two flat sections (10 c) are vertical to the distribution paths of the two first inclined flanging (110).

9. The rear subframe bushing of claim 1 wherein said inner tube (100) has a lightening hole (10 d) formed in a side wall thereof.

10. A vehicle comprising a rear sub frame bushing as claimed in any of claims 1 to 9.

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