CN215513859U - Sleeve, bush mounting structure and auxiliary frame - Google Patents

Abstract

The utility model discloses a sleeve, a bush mounting structure and an auxiliary frame, and relates to the technical field of automobiles. The sleeve pipe includes body and end plate, and the end plate is the stamping workpiece, and the sleeve pipe is the machined part, and the end plate welding is in the one end of body, sheathed tube body periphery and sub vehicle frame body welded fastening, and the sleeve pipe is equipped with the one end of end plate last, and the bush pressure equipment is in sheathed tube body hole, with the hole interference fit of body, the bolster supports on sheathed tube end plate. The sleeve has the advantages of simple forming process, short welding line, light weight, low production cost, high dimensional precision, capability of supporting the buffer piece, less integral parts of the bushing mounting structure adopting the sleeve, simple structure and easy assembly.

Description

Sleeve, bush mounting structure and auxiliary frame

Technical Field

The utility model relates to the technical field of automobiles, in particular to a bushing mounting structure of an automobile auxiliary frame.

Background

The bushings of the subframe serve to transmit and absorb suspension and powertrain suspension loads, reduce road excitation and the transmission of engine shock into the vehicle body, provide additional noise isolation in the underbody, and the like.

The conventional bush mounting structure is: the auxiliary frame body section bar extends outwards to form an extending portion, the upper half portion and the lower half portion of the extending portion are buckled, a mounting hole which is through up and down is formed in the extending portion, and the bushing is pressed in the mounting hole.

According to the structure, production needs to be carried out through multiple processes such as blanking → primary drawing → secondary drawing → trimming → punching → shaping, the production efficiency is low, the production cost is high, the inner diameter size precision of the formed mounting hole is difficult to guarantee, and the problem that the bushing is easy to separate from the mounting hole due to too small interference of the bushing relative to the mounting hole or the bushing is difficult to press and mount due to too large interference easily occurs.

Therefore, how to improve the bushing mounting structure is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a sleeve for bearing a bushing of an auxiliary frame, wherein the sleeve comprises a pipe body and an end plate, the end plate is a stamping part, the sleeve is a machined part, and the end plate is welded at one end of the pipe body.

In an embodiment, a plurality of welding seams are arranged between the end plate and the sleeve, and each welding seam is arranged along the circumferential direction of the pipe body at intervals in sequence.

In one embodiment, the end plate is provided with a through hole, the inner edge of the end plate extends inwards beyond the inner wall of the pipe body, and the outer edge of the end plate extends outwards beyond the outer wall of the pipe body.

The utility model also provides a bushing mounting structure, which comprises a bushing and a sleeve, wherein the sleeve is adopted, the periphery of the body of the sleeve is welded and fixed with the auxiliary frame body, one end of the sleeve, which is provided with the end plate, is arranged on the upper part, the bushing is pressed in the inner hole of the body of the sleeve and is in interference fit with the inner hole of the body,

in one embodiment, the bushing comprises a rubber sleeve, a bushing outer pipe sleeved on the periphery of the rubber sleeve, and a bushing inner pipe arranged in an inner hole of the rubber sleeve.

In one embodiment, the lower end of the rubber sleeve is provided with a rubber flange which protrudes outwards in the radial direction, the lower end of the outer pipe of the bushing is provided with a flange which is turned outwards, the upper surface of the flange abuts against the lower end face of the pipe body, and the upper surface of the rubber flange abuts against the lower surface of the flange.

In one embodiment, a first supporting plate and a fastener are provided, the first supporting plate is located below the bushing and abuts against the lower end of the bushing inner tube, and the fastener penetrates through the first supporting plate and the bushing inner tube and then is tightly connected with a vehicle body.

In one embodiment, a buffer is provided, which is located between the bushing and the vehicle body, the lower end of the buffer abutting against the end plate of the bushing.

In one embodiment, a second supporting plate is arranged and located between the buffer piece and the vehicle body, the upper end of the buffer piece abuts against the second supporting plate, and the inner pipe of the bushing extends to the position above the end plate and abuts against the second supporting plate.

The utility model further provides an auxiliary frame, and the auxiliary frame adopts the bushing mounting structure.

The sleeve pipe that this scheme provided has advantages such as forming process is simple, the welding seam is short, light in weight, low in production cost, can support bolster, size precision height.

The bushing mounting structure provided by the scheme realizes one piece with multiple purposes besides the advantages of the sleeve, so that the bushing mounting structure has few parts, simple structure and easy assembly.

The sub vehicle frame that this scheme provided has bush mounting structure's above-mentioned advantage.

Drawings

FIG. 1 is a perspective view of one embodiment of a cannula provided by the present invention;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic view of the bushing being secured to the subframe;

fig. 5 is a sectional view of the bush mounting structure.

The reference numerals are explained below:

1 casing, 11 pipe body, 12 end plate, 13 welding seam;

2, lining, 21 rubber sleeve, 21a rubber flange, 22 lining outer pipe, 22a flanging and 23 lining inner pipe;

3 a first support plate;

4, fastening pieces;

5 a second support plate;

6, a buffer part;

7 subframe body;

8 vehicle body.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 3, the present invention provides a sleeve 1 including a tubular body 11 and an end plate 12.

The inner hole of the pipe body 11 is a mounting hole of the bush 2, and the bush 2 is pressed in the inner hole of the pipe body 11 in an application state. The bore diameter of the inner bore of the tube body 11 is slightly smaller than the outer diameter of the bushing 2, so that the bushing 2 is in interference fit with the inner bore of the tube body 11.

The pipe body 11 is a machined part and is machined from a pipe, only the inner hole wall surface matched with the lining 2 needs to be machined, so the machining process is simple, and compared with the installation hole formed by stamping the profile into the lining 2 in the background technology, the inner diameter size precision of the installation hole can be ensured, the lining 2 and the installation hole are matched with a proper interference, and the problem of too large or too small interference is not easy to occur.

The end plate 12 is provided with a through hole. The end plate 12 is a stamping part and is formed by stamping a plate, and can be formed by only one blanking process, so that the processing process is simple.

After the end plate 12 and the pipe body 11 are molded, the end plate 12 is abutted against one end face of the pipe body 11, and welding is performed along the outer periphery of the pipe body 11, and the end plate 12 and the pipe body 11 are welded together.

When welding along the periphery of the pipe body 11, a certain interval is reserved for each welding distance, and then the next distance is welded, so that a plurality of welding seams 13 (four in the figure) which are sequentially arranged at intervals are formed on the periphery of the pipe body 11, the length of each welding seam 13 is equal, and the interval distance between every two adjacent welding seams 13 is equal. Thus, the length of the weld joint 13 can be shortened, thereby reducing the production cost and the weight of the sleeve 1, and the requirement of the connection strength between the pipe body 11 and the end plate 12 can be met.

After welding, the inner edge of the end plate 12 extends inwardly beyond the inner wall of the tube 11 and the outer edge of the end plate 12 extends outwardly beyond the outer wall of the tube 11, so that a large support surface is formed on the end plate 12 to stably support the buffer member 6, as will be described further below.

As shown in fig. 4, in the applied state, the outer periphery of the pipe body 11 of the bushing 1 is welded to the subframe body 7. The sleeve 1 is welded with the end plate 12 on one end.

As shown in fig. 5, the bush 2 is press-fitted into the inner hole of the pipe body 11 from the lower end of the pipe body 11. The bushing 2 includes: a rubber sleeve 21, a bushing outer tube 22 sleeved on the periphery of the rubber sleeve 21, and a bushing inner tube 23 arranged in an inner hole of the rubber sleeve 21. The rigidity of the liner inner tube 23 and the liner outer tube 22 is greater than that of the rubber sleeve 21 to support the rubber sleeve 21, and in particular, the liner inner tube 23 and the liner outer tube 22 may be made of metal.

The lower end of the rubber sleeve 21 is provided with a rubber flange 21a protruding outward in the radial direction, the lower end of the liner outer tube 22 is provided with a flange 22a turned outward, the rubber flange 21a abuts against the lower surface of the flange 22a, the upper surface of the flange 22a abuts against the lower end surface of the tube body 11, in other words, the flange 22a abuts between the rubber flange 21a and the lower end surface of the tube body 11. If the rubber flange 21a is directly abutted against the lower surface of the pipe body 11, since the pipe wall of the pipe body 11 is not so thick, there is a possibility that the rubber flange 21a is cut, but by providing the above-mentioned burring 22a at the lower end of the liner outer pipe 22, the rubber flange 21a is indirectly abutted against the lower surface of the pipe body 11 through the burring 22a, and the risk of damage to the rubber flange 21a can be reduced. In addition, the turned edge 22a is abutted against the lower end face of the pipe body 11, so that the relative position of the sleeve 1 and the bush 2 can be limited, and a limiting effect is achieved.

As shown in fig. 5, a first support plate 3 and a fastener 4 may also be provided, the first support plate 3 being located below the bushing 2. The fastener 4 penetrates through the first support plate 3 and the lining inner tube 23 and then is fastened and connected with the vehicle body 8, and under the fastening force action of the fastener 4, the first support plate 3 tightly abuts against the lower end of the lining inner tube 23 to provide upward supporting force for the lining inner tube 23, so that the lining inner tube 23 is prevented from moving downwards relative to the rubber sleeve 21.

As shown in fig. 5, a buffer member 6 may be provided, and the buffer member 6 may be a member having a high elasticity, such as a rubber pad or a spring. The buffer element 6 is located between the sleeve 1 and the body 8, the lower end of the buffer element 6 abutting against an end plate 12 of the sleeve 1, or the lower end of the buffer element 6 being supported on the end plate 12 of the sleeve 1. As described above, since the inner edge of the end plate 12 of the sleeve 1 faces inward toward the inner wall of the tubular body 11 and the outer edge of the end plate 12 extends outward beyond the outer wall of the tubular body 11, a large support surface is formed on the end plate 12, and thus the cushion member 6 can be stably supported on the end plate 12 without providing another support member below the cushion member 6 to support the cushion member 6, thereby simplifying the bushing installation structure.

As shown in fig. 5, a second support plate 5 may be further provided, the second support plate 5 being located between the cushion member 6 and the vehicle body 8, an upper end of the cushion member 6 abutting against the second support plate 5, the second support plate 5 providing a supporting force to the upper end of the cushion member 6.

In addition, the upper end of the bushing inner tube 23 extends above the end plate 12 to abut against the second support plate 5, and the second support plate 5 supports the bushing inner tube 23 downward, preventing the bushing inner tube 23 from moving upward relative to the rubber sleeve 21. The bushing inner tube 23 is supported by the first support plate 3 and the second support plate 5 doubly, and the axial position is stabilized.

The second support plate 5 serves a dual function of supporting the cushion member 6 and the bushing inner tube 23, and is one-piece and multi-purpose, so that the bushing mounting structure can be further simplified.

In addition, this scheme still provides a sub vehicle frame, and this sub vehicle frame adopts above-mentioned bush mounting structure.

In summary, the scheme has the following advantages:

the sleeve 1 has the advantages of simple forming process, short welding line, light weight, low production cost, capability of supporting the buffer part 6 and high dimensional precision; the bushing mounting structure including the above-described sleeve 1 achieves one-piece-multiple use in addition to the above-described advantages, and thus has a small number of parts, a simple structure, and easy assembly; accordingly, the subframe employing the bushing mounting structure described above also has the same advantages.

The bushing, the bush mounting structure and the sub-frame according to the present invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The sleeve pipe for hold bushing (2) of dress sub vehicle frame, its characterized in that, sleeve pipe (1) is including body (11) and end plate (12), end plate (12) are the stamping workpiece, sleeve pipe (1) is the machined part, end plate (12) welding is in the one end of body (11).

2. The casing according to claim 1, wherein a plurality of welding seams (13) are arranged between the end plate (12) and the casing (1), and the welding seams (13) are sequentially arranged at intervals along the circumferential direction of the pipe body (11).

3. Bushing according to claim 1, characterized in that the end plate (12) is provided with through holes, the inner edge of the end plate (12) extending inwardly beyond the inner wall of the tubular body (11) and the outer edge of the end plate (12) extending outwardly beyond the outer wall of the tubular body (11).

4. The bushing mounting structure is characterized by comprising a bushing (2) and a sleeve, wherein the sleeve (1) is adopted, the periphery of a pipe body (11) of the sleeve (1) is welded and fixed with a subframe body (7), one end of the sleeve (1) provided with the end plate (12) is arranged on the upper portion, the bushing (2) is pressed in an inner hole of the pipe body (11) of the sleeve (1) and is in interference fit with the inner hole of the pipe body (11),

5. the bush mounting structure according to claim 4, wherein the bush (2) includes a rubber bush (21), a bush outer tube (22) fitted around an outer periphery of the rubber bush (21), and a bush inner tube (23) fitted in an inner hole of the rubber bush (21).

6. The bushing mounting structure according to claim 5, wherein a rubber flange (21a) protruding radially outward is provided at a lower end of the rubber sleeve (21), a flange (22a) folded outward is provided at a lower end of the bushing outer tube (22), an upper surface of the flange (22a) abuts against a lower end surface of the tube body (11), and an upper surface of the rubber flange (21a) abuts against a lower surface of the flange (22 a).

7. The bushing (mounting structure) according to claim 6, wherein a first support plate (3) and a fastener (4) are provided, the first support plate (3) is located below the bushing (2) and abuts against the lower end of the bushing inner tube (23), and the fastener (4) is fastened to the vehicle body (8) after passing through the first support plate (3) and the bushing inner tube (23).

8. A bush mounting structure according to claim 7, wherein a cushion member (6) is provided, the cushion member (6) being located between the sleeve (1) and the vehicle body (8), a lower end of the cushion member (6) abutting against an end plate (12) of the sleeve (1).

9. The bushing mounting structure according to claim 8, wherein a second support plate (5) is provided, said second support plate (5) being located between said cushion member (6) and the vehicle body (8), an upper end of said cushion member (6) abutting against said second support plate (5), said bushing inner tube (23) extending above said end plate (12) abutting against said second support plate (5).

10. A subframe employing the bushing mounting structure of any one of claims 4 to 9.

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