CN211918304U - Swing arm structure, swing arm assembly and car - Google Patents
Swing arm structure, swing arm assembly and car Download PDFInfo
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- CN211918304U CN211918304U CN202020570572.4U CN202020570572U CN211918304U CN 211918304 U CN211918304 U CN 211918304U CN 202020570572 U CN202020570572 U CN 202020570572U CN 211918304 U CN211918304 U CN 211918304U
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- swing arm
- ball pin
- ball
- automobile
- shell body
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Abstract
The utility model belongs to the technical field of automobile suspensions, and relates to a swing arm structure, a swing arm assembly and an automobile, which comprises a swing arm body, wherein the swing arm body is provided with a ball pin shell and a bush mounting part; the ball pin shell comprises a shell body and a cover plate; the shell body is provided with an annular limiting part for penetrating the ball pin, and the distance between two opposite wall surfaces of the annular limiting part in the left and right directions of the automobile is greater than the distance between two opposite wall surfaces of the annular limiting part in the front and back directions of the automobile. Compared with the prior art, the utility model discloses both allowed ball pin pole to carry out less angle swing on the car fore-and-aft direction, allowed ball pin pole to carry out great angle swing again and do not take place to interfere with the shell body in the left and right direction of car.
Description
Technical Field
The utility model belongs to the technical field of the automotive suspension, especially, relate to a swing arm structure, swing arm assembly and car.
Background
The swing arm assembly is used for connecting a steering knuckle and an auxiliary frame and is a key part of an automobile suspension.
The swing arm assembly includes ball round pin, interior ball seat, outer ball seat, apron and casing, and the ball round pin passes through interior ball seat, outer ball seat, apron and casing cooperation installation, but present swing arm assembly hangs the stroke at the car great, leads to the ball round pin of swing arm assembly when the pivot angle is great on certain direction, can appear the problem of interfering between ball round pin pole of ball round pin and the casing, is unfavorable for ball round pin fatigue life's improvement, but also has influenced the security of whole car.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: when the ball pin of current swing arm assembly is great at the pivot angle, the problem of appearing interfering between the ball pin pole of ball pin and the casing provides a swing arm structure, swing arm assembly and car.
In order to solve the technical problem, an embodiment of the utility model provides a swing arm structure, which comprises a swing arm body, wherein a ball pin shell and a bush mounting part are arranged on the swing arm body; the ball pin shell comprises a shell body and a cover plate;
the shell body is provided with an annular limiting part for penetrating the ball pin, and the distance between two opposite wall surfaces of the annular limiting part in the left and right directions of the automobile is greater than the distance between two opposite wall surfaces of the annular limiting part in the front and back directions of the automobile.
Optionally, the included angle between the symmetric axis of the two opposite wall surfaces with the closer distance of the annular limiting part and the symmetric axis in the left-right direction of the automobile is 65-80 degrees.
Optionally, the cross section of the annular limiting part in the direction perpendicular to the axis of the shell body is oval.
Optionally, the distance from one end of the annular limiting part close to the inner side of the shell body to one end far away from the inner side of the shell body on the two opposite wall surfaces in the direction of the major axis of the ellipse is gradually increased.
Optionally, the swing arm body is of a U-shaped structure, the number of the bushing mounting portions is two, the two bushing mounting portions are respectively fixed to the end portions of the opening portions of the U-shaped structure, and the shell body is arranged at the arc-shaped end portions of the U-shaped structure.
Optionally, the two bush mounting portions are coaxial in the vehicle front-rear direction.
On the other hand, the utility model also provides a swing arm assembly, including ball round pin assembly, bush and as above the swing arm structure, the ball round pin assembly passes through the apron compresses tightly on the shell body, the bush pressure in the bush mounting hole of bush installation department.
Optionally, the ball pin assembly includes a ball pin, an inner ball seat and an outer ball seat, the ball pin includes a ball head and a ball pin rod, the outer ball seat and the inner ball seat are pressed against the inner cavity of the housing body through the cover plate and form a spherical cavity for mounting the ball head, the ball head is mounted in the spherical cavity, and the ball pin rod extends out of the housing body through the annular limiting part;
one end of the outer ball seat, which is close to the ball pin rod in the left-right direction of the automobile, partially extends out of the inner cavity.
Optionally, the ball pin assembly further comprises a dust cover, a collar, and a ball pin sleeve;
one end of the dust cover is sleeved outside the ball pin rod, and the other end of the dust cover is fixed on the shell body through the clamping ring;
the ball pin sleeve is sleeved on the ball pin rod in a sealing mode, and the ball pin sleeve is located in the dust cover and connected with the dust cover in a sealing mode.
Optionally, the bushing includes an inner tube, an outer tube, and an intermediate tube, the intermediate tube is sleeved outside the inner tube, the outer tube is sleeved outside the intermediate tube, and the inner tube and the intermediate tube, and the intermediate tube and the outer tube are fixed together by vulcanization of rubber.
On the other hand, the utility model also provides an automobile, including as above the swing arm assembly.
The embodiment of the utility model provides a swing arm structure, swing arm assembly and car, compared with the prior art, because the distance of the spacing two relative walls of portion on the car left and right sides of annular is greater than the distance of the spacing two relative walls of portion on the car fore-and-aft direction of annular between, under the condition that does not change ball round pin size, both allowed ball pin pole to carry out less angular oscillation on the car fore-and-aft direction, allow ball pin pole to carry out great angular oscillation on the car left and right sides again and not take place to collide with the interference with the shell body, increase the automotive suspension stroke, improve ball round pin fatigue life, guarantee whole car security.
Drawings
Fig. 1 is an exploded view of a swing arm assembly according to an embodiment of the present invention;
FIG. 2 is a front view of the swing arm assembly of FIG. 1;
FIG. 3 is a perspective view of a portion of the structure of the swing arm assembly of FIG. 2;
FIG. 4 is a bottom view of a portion of the structure of the swing arm assembly of FIG. 2;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is a cross-sectional view taken at B-B of FIG. 4;
FIG. 7 is a cross-sectional view taken at C-C of FIG. 4;
fig. 8 is a cross-sectional view of a bushing in the swing arm assembly of fig. 1.
The reference numerals in the specification are as follows:
1. a swing arm body; 11. a concave cavity; 12. reinforcing ribs; 13. a first body section; 14. a second body section; 15. a third body section;
2. a housing body; 21. an inner cavity; 22. an annular limiting part; 221. an arc-shaped inner wall surface; 23. a clamping groove;
3. a bushing mounting portion; 31. a bushing mounting hole;
4. a ball pin assembly; 41. a ball pin; 411. a ball head; 412. a ball pin lever; 42. an inner ball seat; 43. an outer ball seat; 45. a dust cover; 451. a clamping part; 46. a collar; 47. a ball pin sleeve;
5. a bushing; 51. an inner tube; 52. an outer tube; 53. an intermediate pipe; 54. rubber;
6. and (7) a cover plate.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects 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 for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1-4, the swing arm structure provided by the embodiment of the present invention comprises a swing arm body 1, wherein the swing arm body 1 is provided with a ball pin housing and a bushing mounting portion 3; the ball pin shell comprises a shell body 2 and a cover plate 6; the shell body 2 is provided with an annular limiting part 22 for penetrating the ball pin 41, and the distance between two opposite wall surfaces of the annular limiting part 22 in the left-right direction of the automobile is larger than the distance between two opposite wall surfaces of the annular limiting part 22 in the front-back direction of the automobile.
Wherein, the shell body 2 is provided with an inner cavity 21 running through one end thereof, and the inner cavity 21 is used for installing the ball pin assembly 4;
the cover plate 6 is covered on the opening of the inner cavity 21 and used for limiting the ball pin assembly 4 to be separated from the opening;
one end of the annular limiting portion 22 is communicated with the inner cavity 21, the other end of the annular limiting portion 22 penetrates through one end of the shell body 2, which is away from the inner cavity 21, and the annular limiting portion 22 is used for penetrating the ball pin 41 of the ball pin assembly 4 and limiting the swing angle of the ball pin rod 412 of the ball pin 41.
The embodiment of the utility model provides a fore-and-aft direction, left and right sides direction, inside and outside direction, upper and lower direction and automobile body's fore-and-aft direction, left and right sides direction, inside and outside direction, upper and lower direction are unanimous.
The embodiment of the utility model provides a swing arm structure, compared with the prior art, because the distance of the spacing two relative walls of portion 22 of annular between the ascending two relative walls of the automobile left and right sides is greater than the distance of the spacing portion 22 of annular between the ascending two relative walls of automobile front and back direction, under the condition that does not change ball round pin size, both allowed ball pin rod 412 to carry out less angular oscillation on the automobile front and back direction, allow ball pin rod 412 to carry out great angular oscillation on the automobile left and right sides again and not take place to collide with shell body 2 and interfere, increase the automotive suspension stroke, improve ball round pin 41 fatigue life, guarantee whole car security.
In one embodiment, as shown in FIG. 1, the angle between the symmetry axis of the two opposite wall surfaces of the annular limiting portion 22 and the symmetry axis of the left and right directions of the vehicle is 65-80 °. To facilitate the rocking of the ball pin shaft 412 without interfering with the housing body 2.
In one embodiment, as shown in FIG. 1, the first direction is a direction extending from the interior of the vehicle toward the laterally outer portion, and the first direction makes an angle θ of 65 ° to 80 ° with the front-to-rear direction of the vehicle. The symmetry axes of the two opposite wall surfaces of the annular limiting part 22 which are closer to each other are in the first direction. So that the ball pin shaft 412 does not collide and interfere with the case body 2 when swinging at a large angle in the first direction.
Preferably, the first direction makes an angle θ of 70 ° to 75 ° with the front-to-rear direction of the vehicle.
In one embodiment, as shown in fig. 1, the cross section of the annular stopper portion 22 in the direction perpendicular to the axis of the case body 2 is elliptical. The long axis of the annular limiting part 22 is in the first direction, so that the strength of the shell body 2 is not excessively reduced while the distance between the two opposite wall surfaces of the annular limiting part 22 in the first direction is maximized.
Specifically, the maximum angle of the ball pin shaft 412 swinging in the first direction can be allowed to reach about 75 ° by providing the annular stopper portion 22 having an elliptical cross section.
In one embodiment, as shown in fig. 5, the distance from one end of the two opposite wall surfaces close to the inner side of the housing body 2 to the end far away from the inner side of the housing body 2 in the major axis direction of the ellipse gradually increases. To allow for greater angular oscillation of the ball pin shaft 412 in the first direction.
In one embodiment, as shown in fig. 1, the swing arm body 1 has a U-shaped structure, two bushing mounting portions 3 are provided, the two bushing mounting portions 3 are respectively fixed to the end portions of the opening portion of the U-shaped structure, and the shell body 2 is disposed at the arc-shaped end portion of the U-shaped structure. Through designing the swing arm body 1 into "U" shape structure, can reduce the space that swing arm body 1 took on the car.
Specifically, the swing arm body 1 includes a first body section 13 and a second body section 14 and a third body section 15 which are arranged oppositely, and the outer end of the second body section 14 and the outer end of the third body section 15 are respectively connected to both ends of the first body section 13;
the case body 2 is provided in the middle of the first body section 13;
the two bush mounting portions 3 are provided at the inner end of the second body section 14 and the inner end of the third body section 15, respectively;
as shown in fig. 3 and 7, the swing arm body 1 is provided with a cavity 11, and both ends of the cavity 11 extend toward the two bushing mounting portions 3, respectively. Through set up cavity 11 on swing arm body 1, can guarantee swing arm body 1's intensity to the weight of swing arm body 1 has been alleviateed, is favorable to swing arm body 1's lightweight.
Preferably, as shown in fig. 1, a reinforcing rib 12 is disposed on a side of the swing arm body 1 away from the cavity 11, and one end of the reinforcing rib 12 extends to the bushing mounting portion 3. The strength of the swing arm body 1 can be further improved by providing the reinforcing ribs 12.
In one embodiment, as shown in fig. 1 and 4, the bushing mounting holes 31 of the two bushing mounting portions 3 are coaxial in the front-rear direction of the automobile, so that the swing arm body is better stressed after being mounted on the automobile, and the service life is prolonged.
On the other hand, as shown in fig. 1 and 2, the utility model also provides a swing arm assembly, including ball round pin assembly 4, bush 5 and above swing arm structure, ball round pin assembly 4 is installed on shell body 2, and bush 5 pressure equipment is in bush mounting hole 31 of bush installation department 3.
In one embodiment, as shown in fig. 1 and 5, the ball pin assembly 4 includes a ball pin 41, an inner ball seat 42 and an outer ball seat 43, the ball pin 41 includes a ball head 411 and a ball pin rod 412, the outer ball seat 43 and the inner ball seat 42 are pressed against the inner cavity 21 of the housing body 2 through the cover plate 6 and form a spherical cavity for installing the ball head 411, the ball head 411 is installed in the spherical cavity, and the ball pin rod 412 extends out of the housing body 2 through the annular limiting part 22;
the outer ball seat 43 partially extends out of the inner cavity 21 near one end of the ball pin shaft 412 in the left-right direction of the vehicle, so that the ball head 411 can be further prevented from falling off the outer ball seat 43.
Specifically, the outer ball seat 43 is installed in the inner cavity 21, the ball head 411 is installed in the outer ball seat 43, the inner ball seat 42 is covered on the ball head 411 and located between one end of the ball head 411, which is far away from the ball pin rod 412, and the inner wall of one end of the outer ball seat 43, which is far away from the ball pin rod 412, the cover plate 6 is connected with the shell body 2 and compresses the outer ball seat 43 on the inner wall of the inner cavity 21 and compresses the inner ball seat 42 between one end of the ball head 411, which is far away from the ball pin rod 412, and the inner wall of one end of the outer ball seat 43, which is far away from the ball pin rod 412, so that the ball.
In one embodiment, as shown in fig. 1, 5 and 6, the ball pin assembly 4 further includes a dust cover 45, a collar 46 and a ball pin sleeve 47;
one end of the dust cover 45 is sleeved outside the ball pin rod 412, and the other end of the dust cover 45 is fixed on the shell body 2 through a clamping ring 46;
one end of the ball pin shaft 412 extends out of the dust cover 45;
the ball pin sleeve 47 is hermetically sealed on the ball pin rod 412, the ball pin sleeve 47 is located in the dust cover 45, and one end of the ball pin sleeve 47, which is far away from the ball head 411, is hermetically connected with the dust cover 45. Impurities such as dust can be prevented from entering the housing body 2 by providing the dust cover 45, and the lubricating oil on the ball head 411 can be prevented from flowing out along the ball pin shaft 412 by providing the ball pin sleeve 47.
Preferably, the dust cover 45 is made of rubber material, and the ball pin sleeve 47 is made of hard plastic.
In one embodiment, as shown in fig. 5, the housing body 2 is provided with a clamping groove 23, the upper end of the dust cover 45 is provided with a clamping portion 451 which is matched with the clamping groove 23, and the clamping portion 451 is clamped in the clamping groove 23 and fixed by a clamping ring 46.
In one embodiment, as shown in fig. 8, the bushing 5 includes an inner tube 51, an outer tube 52 and an intermediate tube 53, the intermediate tube 53 is sleeved outside the inner tube 51, the outer tube 52 is sleeved outside the intermediate tube 53, and the inner tube 51 and the intermediate tube 53, and the intermediate tube 53 and the outer tube 52 are vulcanized and fixed together by rubber 54. The bushing structure has the advantages of higher strength, better quality and longer service life.
On the other hand, the utility model also provides an automobile, including the swing arm assembly as above.
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 swing arm structure comprises a swing arm body, wherein a ball pin shell and a bushing mounting part are arranged on the swing arm body; the ball pin shell comprises a shell body and a cover plate;
the automobile ball pin limiting device is characterized in that an annular limiting portion used for penetrating through a ball pin is arranged on the shell body, and the distance between two opposite wall surfaces of the annular limiting portion in the left and right direction of an automobile is larger than the distance between two opposite wall surfaces of the annular limiting portion in the front and back direction of the automobile.
2. The swing arm structure according to claim 1, wherein the included angle between the symmetric axis of the two opposite wall surfaces with the closer distance of the annular limiting part and the symmetric axis of the left and right directions of the automobile is 65-80 degrees.
3. The swing arm structure according to claim 2, wherein the cross section of the annular limiting portion in the direction perpendicular to the axis of the shell body is an ellipse.
4. The swing arm structure according to claim 3, wherein the annular limiting portion gradually increases the distance from the end close to the inner side of the housing body to the end far away from the inner side of the housing body on the two opposite wall surfaces in the direction of the major axis of the ellipse.
5. The swing arm structure of claim 1, wherein the swing arm body is a U-shaped structure, the number of the bushing mounting portions is two, the bushing mounting portions are respectively fixed at the end portions of the opening portions of the U-shaped structure, and the shell body is arranged at the arc-shaped end portions of the U-shaped structure.
6. The swing arm structure according to claim 5, wherein the bush mounting portions are coaxial in the vehicle front-rear direction.
7. A swing arm assembly comprising a ball pin assembly, a bushing and the swing arm structure of any one of claims 1-6, wherein the ball pin assembly is pressed against the shell body through the cover plate, and the bushing is press-fitted into a bushing mounting hole of the bushing mounting portion.
8. The swing arm assembly according to claim 7, wherein the ball pin assembly comprises a ball pin, an inner ball seat and an outer ball seat, the ball pin comprises a ball head and a ball pin rod, the outer ball seat and the inner ball seat are pressed in an inner cavity of the shell body through the cover plate and form a spherical cavity for mounting the ball head, the ball head is mounted in the spherical cavity, and the ball pin rod extends out of the shell body through the annular limiting part;
one end of the outer ball seat, which is close to the ball pin rod in the left-right direction of the automobile, partially extends out of the inner cavity.
9. The swing arm assembly according to claim 8 wherein the ball pin assembly further comprises a dust cover, a collar, and a ball pin sleeve;
one end of the dust cover is sleeved on the ball pin rod, and the other end of the dust cover is fixed on the shell body through the clamping ring;
the ball pin sleeve is sleeved on the ball pin rod in a sealing mode, and the ball pin sleeve is located in the dust cover and connected with the dust cover in a sealing mode.
10. An automobile, characterized in that it comprises a swing arm assembly according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020570572.4U CN211918304U (en) | 2020-04-16 | 2020-04-16 | Swing arm structure, swing arm assembly and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020570572.4U CN211918304U (en) | 2020-04-16 | 2020-04-16 | Swing arm structure, swing arm assembly and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211918304U true CN211918304U (en) | 2020-11-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020570572.4U Active CN211918304U (en) | 2020-04-16 | 2020-04-16 | Swing arm structure, swing arm assembly and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211918304U (en) |
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2020
- 2020-04-16 CN CN202020570572.4U patent/CN211918304U/en active Active
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