CN215284248U - Control arm assembly, suspension system and automobile - Google Patents
Control arm assembly, suspension system and automobile Download PDFInfo
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- CN215284248U CN215284248U CN202120820128.8U CN202120820128U CN215284248U CN 215284248 U CN215284248 U CN 215284248U CN 202120820128 U CN202120820128 U CN 202120820128U CN 215284248 U CN215284248 U CN 215284248U
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- control arm
- arm assembly
- positioning groove
- fastening bolt
- bushing
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Abstract
The utility model discloses a control arm subassembly, suspension system and car, including knuckle, bush and fastening bolt. Wherein, the knuckle includes main part and bellying, and the one end of bellying is fixed in the main part, and the other end of bellying extends towards the direction of keeping away from the main part, and cross sectional area reduces gradually, is provided with the fastening hole on the bellying keeps away from the terminal surface of main part. The bushing is provided with a positioning groove, the bulge is embedded in the positioning groove, the bottom of the positioning groove is provided with a communicating hole, the fastening bolt penetrates through the communicating hole, and one end of the fastening bolt is in threaded fit with the fastening hole. The convex part arranged on the main body and the positioning groove arranged on the bushing are utilized, the maximum force arm of bending moment under the action of road condition load is effectively shortened, the risk of breakage of the fastening bolt is reduced, and the safety is improved.
Description
Technical Field
The utility model relates to a field especially relates to control arm subassembly, suspension system and car.
Background
In the related art, a bush applied in the aforementioned control arm of the automobile tends to be in plane contact with the knuckle. During vehicle operation, when a road condition load is applied to the toe control arm, a bending moment is applied to the fastening bolt connected to the bushing and the knuckle; meanwhile, in the long-term motion accumulation process, the fastening bolt is easy to loosen. When the loosened fastening bolt is subjected to a large bending moment, bending fatigue fracture is easy to occur, so that fastening connection is failed, and the safety can not be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a control arm subassembly can effectively improve the security.
The utility model also provides a suspension system of having above-mentioned control arm subassembly.
The utility model also provides a car that has above-mentioned control arm subassembly.
An embodiment of the first aspect of the utility model provides a control arm component, include:
the steering knuckle comprises a main body and a bulge, one end of the bulge is fixed to the main body, the other end of the bulge extends towards the direction far away from the main body, the cross-sectional area of the bulge is gradually reduced, and a fastening hole is formed in the end face, far away from the main body, of the bulge;
the bushing is provided with a positioning groove, the bulge is embedded in the positioning groove, and a communicating hole is formed in the bottom of the positioning groove;
and the fastening bolt penetrates through the communication hole, and one end of the fastening bolt is in threaded fit with the fastening hole.
According to the utility model discloses control arm subassembly has following technological effect at least:
the convex part arranged on the main body and the positioning groove arranged on the bushing are utilized, the maximum force arm of bending moment under the action of road condition load is effectively shortened, the risk of breakage of the fastening bolt is reduced, and the safety is improved.
According to the utility model discloses a control arm subassembly of some embodiments, the side of bellying is the circular conical surface.
According to some embodiments of the invention, the taper of the conical surface ranges from 1:8 to 1: 6.
According to some embodiments of the invention, the control arm assembly further comprises a bushing extending from the end face of the main body to the side of the boss.
According to the utility model discloses a control arm subassembly of some embodiments, the symmetry is provided with two on the bush the constant head tank.
According to the utility model discloses a control arm subassembly of some embodiments, the bush includes stereoplasm sleeve pipe and flexible sleeve pipe, the fixed cover of stereoplasm sleeve pipe is located the flexible sleeve pipe, the intercommunicating pore set up in the flexible sleeve pipe.
According to the utility model discloses a control arm subassembly of some embodiments, the stereoplasm sleeve pipe adopts aluminium alloy material to make.
According to the utility model discloses a control arm subassembly of some embodiments, fastening bolt is hexagon flange face bolt.
An embodiment of a second aspect of the present invention provides a suspension system, comprising a control arm assembly according to an embodiment of the above first aspect of the present invention.
According to the utility model discloses suspension system has following technological effect at least:
by adopting the control arm assembly, the risk of separation between the connected components in the suspension system is effectively reduced, and the safety is improved.
An embodiment of a third aspect of the present invention provides a vehicle, comprising a suspension system according to an embodiment of the above second aspect of the present invention.
According to the utility model discloses suspension system has following technological effect at least:
by adopting the suspension system, the risk of failure of the automobile in the driving process is reduced, and the driving safety is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic perspective view of a knuckle according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a bushing according to an embodiment of the present invention;
FIG. 3 is a partial cross-sectional view of a control arm assembly in an embodiment of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
Reference numerals: the knuckle 100, the main body 110, the boss 120, the fastening hole 121, the bush 200, the positioning groove 210, the communication hole 220, and the fastening bolt 300.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
A control arm assembly according to an embodiment of the present invention is described below with reference to fig. 1 to 4.
According to the utility model discloses control arm subassembly of first aspect embodiment, including knuckle 100, bush 200 and fastening bolt 300.
The knuckle 100 includes a main body 110 and a boss 120, one end of the boss 120 is fixed to the main body 110, the other end of the boss 120 extends in a direction away from the main body 110, the cross-sectional area of the boss gradually decreases, and a fastening hole 121 is formed in an end surface of the boss 120 away from the main body 110. Be provided with constant head tank 210 on the bush 200, bellying 120 inlays in constant head tank 210, and the tank bottom of constant head tank 210 is provided with intercommunicating pore 220, and fastening bolt 300 wears to locate intercommunicating pore 220, and fastening bolt 300's one end and fastening hole 121 screw-thread fit.
Specifically, the knuckle 100 includes a main body 110 and a protrusion 120 fixed on the main body 110 by welding or integral molding, and a cross-sectional area of the protrusion 120 in an extending direction perpendicular to an end of the protrusion 120 away from the main body 110 is gradually reduced with an increase in distance from the main body 110, so that a side surface of the protrusion 120 is inclined, and the protrusion 120 may be circular truncated cone-shaped or truncated pyramid-shaped, which is not described herein again.
Correspondingly, be provided with constant head tank 210 on at least one terminal surface that is cylindric bush 200, constant head tank 210's shape is similar with bellying 120 to make bellying 120 can imbed in constant head tank 210, and the side of bellying 120 can laminate in the inner wall of constant head tank 210, thereby effectively increased area of contact between the two, and then increased the frictional force between knuckle 100 and the bush 200, be favorable to preventing to take place relative slip between the two. Meanwhile, the matching between the convex part 120 and the positioning groove 210 can play a certain positioning role, so that the positioning performance of the bushing 200 compared with the steering knuckle 100 is optimized, the gap generated in the matching process is reduced or eliminated, and the service performance of the control arm assembly in practical application is improved.
In addition, a fastening hole 121 is provided on an end surface of the boss 120 remote from the body 110, the fastening hole 121 is a blind hole tapped with an internal thread, and in order to increase the depth of the fastening hole 121, a bottom end of the fastening hole 121 may extend into the body 110; meanwhile, the groove bottom of the positioning groove 210 on the bush 200 is provided with a communication hole 220, the communication hole 220 is a through hole penetrating through both end surfaces of the bush 200, and when the boss 120 is inserted into the positioning groove 210, the communication hole 220 coincides with the axis of the fastening hole 121, so that the end of the fastening bolt 300, on which the external thread is tapped, can be screwed to the boss 120 through the fastening hole 121 after passing through the communication hole 220, and the head of the fastening bolt 300 abuts against the end of the bush 200 far from the knuckle 100, thereby fixing the bush 200 on the knuckle 100.
As shown in fig. 3, a represents the distance between both end surfaces of the bush 200, and b represents the height of the boss 120. It can be understood that when the protrusion 120 is not provided, the maximum moment arm of the bending moment under the road condition load is a, and after the protrusion 120 is provided, the maximum moment arm of the bending moment under the road condition load is a-b, so that the maximum moment arm of the bending moment under the road condition load is effectively shortened, the risk of breakage of the fastening bolt 300 is reduced, and the safety is improved. In addition, such design has also effectively increased the length of threaded engagement between fastening bolt 300 and knuckle 100 for fastening bolt 300 is difficult for becoming flexible, has further improved the security.
In some embodiments of the present invention, the side of the protrusion 120 is a conical surface.
Specifically, the boss 120 is in a circular truncated cone shape, the bottom surface with a smaller area is an end surface far away from the main body 110, and the axis of the fastening hole 121 is collinear with the central axis of the boss 120. Correspondingly, the positioning groove 210 is also circular truncated cone-shaped, and the bottom surface with a larger area is located at the opening of the positioning groove 210, so that the protruding portion 120 can be inserted into the positioning groove 210, and the side surface of the protruding portion 120 is attached to the inner wall of the positioning groove 210.
It can be understood that, compared with the prism shape, the protrusion 120 with the conical surface on the side has better positioning performance in the process of matching with the positioning groove 210, and the conical surface ensures that all parts of the protrusion 120 are stressed more uniformly and are not easy to be damaged.
In some embodiments of the invention, the taper of the conical surface ranges from 1:8 to 1: 6.
Specifically, the end surface of the circular truncated cone-shaped protrusion 120 away from the main body 110 and the end surface connected to the main body 110 are both circular, and the ratio of the difference between the diameters of the two end surfaces to the height of the protrusion 120 is the taper of the protrusion 120 at this time, that is, the taper of the side surface of the protrusion 120, which is a conical surface. The taper is in the range of 1:8 to 1: 6.
When the taper value is greater than 1:6, namely the taper is 1:5 or 1:1 and the like, the inclination angle of the side surface of the convex part 120 relative to the central axis of the convex part 120 is too large, so that the positioning performance when the convex part 120 is matched with the positioning groove 210 is weakened, unnecessary gaps are easy to occur in the process of assembling the control arm assembly, and the use performance of the control arm assembly is influenced; when the taper is smaller than 1:8, the diameter of the end of the protruding portion 120 away from the main body 110 is too small, so that the protruding portion 120 cannot always maintain sufficient strength, and the probability of breakage of the protruding portion 120 is increased.
For example, the taper value of the circular truncated cone-shaped protrusion 120 is 1: 7. It can be appreciated that such a design can cooperate with the positioning groove 210 to achieve good positioning while ensuring the strength of the protruding portion 120.
In some embodiments of the present invention, there is a space between the end surface of the bushing 200 near the main body 110 and the side of the main body 110 fixed to the boss 120.
Specifically, during the machining process, a chamfer may be left at the connection position of the protrusion 120 and the main body 110, and a gap is provided between the end surface of the bushing 200 provided with the communication hole 220 and the side surface of the main body 110 facing the bushing 200, as shown in fig. 4, where c represents the width of the gap, and where c should satisfy a radius equal to or greater than the chamfer, so as to ensure that the existence of the chamfer does not affect the fit between the inner wall of the positioning groove 210 and the side surface of the protrusion 120.
In some embodiments of the present invention, two positioning grooves 210 are symmetrically disposed on the bushing 200.
Specifically, two positioning grooves 210 are disposed on two bottom surfaces of the cylindrical bushing 200, and the other parameters of the two positioning grooves 210 are the same except for different positions, so that the protruding portion 120 can be matched with any one of the positioning grooves 210.
It will be appreciated that such a design allows installation without the need for a worker to discern the orientation of the bushing 200 during assembly, improving assembly efficiency to some extent.
In some embodiments of the present invention, the bushing 200 includes a hard sleeve and a flexible sleeve, the hard sleeve is fixed to the flexible sleeve, and the communication hole 220 is disposed in the flexible sleeve.
Specifically, the bushing 200 is divided into two layers from inside to outside, which are respectively a flexible sleeve and a rigid sleeve, wherein the rigid sleeve can be made of rigid plastic or metal material, and the flexible sleeve can be made of rubber material such as NR (natural rubber) or PU (polyurethane). The hard sleeve is sleeved outside the pipe wall of the flexible sleeve in a bonding or clamping groove buckling connection mode and the like, the communication hole 220 is arranged on the flexible sleeve, and therefore the axis of the communication hole 220, the axis of the flexible sleeve and the axis of the hard sleeve are collinear. The positioning groove 210 may be completely disposed at one end of the flexible sleeve, or may be disposed on both the flexible sleeve and the rigid sleeve.
It can be understood that the rigid sleeve with greater rigidity ensures that the bushing 200 will not deform in appearance when subjected to an external force, while the flexible sleeve can absorb vibration to some extent, which is beneficial to the protection of the fastening bolt 300.
In some embodiments of the present invention, the hard sleeve is made of an aluminum alloy material.
Specifically, the hard sleeve made of the aluminum alloy material has low density and high strength, so that the hard sleeve is not easily damaged in actual use while the weight is reduced, and the service life of the bushing 200 is prolonged.
In some embodiments of the present invention, the fastening bolt 300 is a hexagon flange bolt.
Specifically, the hexagonal flange face bolt can bear bigger pretightning force than ordinary bolt, and sets up the concave-convex line that can play locking effect on the ring flange surface, so adopt hexagonal flange face bolt as fastening bolt 300 for fastening bolt 300 is difficult for becoming flexible for knuckle 100, has improved the security.
According to a second aspect of the present invention, a suspension system includes a control arm assembly according to the first aspect of the present invention.
Particularly, by adopting the control arm assembly, the risk of separation between connected components in the suspension system is effectively reduced, and the safety is improved. In addition, the cooperation of the boss 120 and the positioning groove 210 optimizes the locatability of the bushing 200 compared to the knuckle 100 to a certain extent, thereby effectively eliminating the gap generated by the cooperation between the control arm main body 110, the bushing 200, the knuckle 100 and the fastening bolt 300, and improving the process capability of four-wheel positioning toe-in.
According to the utility model discloses car of third aspect embodiment, include according to the utility model discloses the suspension system of above-mentioned second aspect embodiment.
Particularly, by adopting the suspension system, the risk of failure of the automobile in the driving process is reduced, and the driving safety is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A control arm assembly, comprising:
the steering knuckle comprises a main body and a bulge, one end of the bulge is fixed to the main body, the other end of the bulge extends towards the direction far away from the main body, the cross-sectional area of the bulge is gradually reduced, and a fastening hole is formed in the end face, far away from the main body, of the bulge;
the bushing is provided with a positioning groove, the bulge is embedded in the positioning groove, and a communicating hole is formed in the bottom of the positioning groove;
and the fastening bolt penetrates through the communication hole, and one end of the fastening bolt is in threaded fit with the fastening hole.
2. The control arm assembly of claim 1, wherein the sides of the boss are conical.
3. A control arm assembly according to claim 2, wherein the taper of said conical surface is in the range 1:8 to 1: 6.
4. The control arm assembly of claim 1, wherein the bushing is spaced from an end surface of the body adjacent the body and a side surface of the body secured to the boss.
5. The control arm assembly of claim 1, wherein said bushing has two of said detents disposed thereon symmetrically.
6. The control arm assembly of claim 1, wherein said bushing comprises a rigid sleeve and a flexible sleeve, said rigid sleeve fixedly secured to said flexible sleeve, said communication aperture disposed in said flexible sleeve.
7. The control arm assembly of claim 6, wherein said hardened sleeve is formed of an aluminum alloy material.
8. The control arm assembly of claim 1, wherein said fastening bolt is a hex flange face bolt.
9. A suspension system comprising a control arm assembly according to any one of claims 1 to 8.
10. An automobile comprising the suspension system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120820128.8U CN215284248U (en) | 2021-04-20 | 2021-04-20 | Control arm assembly, suspension system and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120820128.8U CN215284248U (en) | 2021-04-20 | 2021-04-20 | Control arm assembly, suspension system and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215284248U true CN215284248U (en) | 2021-12-24 |
Family
ID=79537369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120820128.8U Active CN215284248U (en) | 2021-04-20 | 2021-04-20 | Control arm assembly, suspension system and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215284248U (en) |
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2021
- 2021-04-20 CN CN202120820128.8U patent/CN215284248U/en active Active
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| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220322 Granted publication date: 20211224 |