CN112172429A - Lower A word arm structure, lower A word arm assembly, suspension system and vehicle - Google Patents
Lower A word arm structure, lower A word arm assembly, suspension system and vehicle Download PDFInfo
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- CN112172429A CN112172429A CN202011088559.6A CN202011088559A CN112172429A CN 112172429 A CN112172429 A CN 112172429A CN 202011088559 A CN202011088559 A CN 202011088559A CN 112172429 A CN112172429 A CN 112172429A
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- arm
- bushing
- assembly
- shaped arm
- support arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G7/00—Pivoted suspension arms; Accessories thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/18—Steering knuckles; King pins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
Abstract
The invention provides a lower A-shaped arm structure, a lower A-shaped arm assembly, a suspension system and a vehicle, wherein the lower A-shaped arm structure comprises: forging a lower A-shaped arm body integrally formed by aluminum alloy, wherein the lower A-shaped arm body comprises two support arms with one ends connected with each other and a cross arm arranged between the two support arms; the ball pin press mounting holes are formed in the connecting ends of the two support arms; a lower A-shaped arm bushing press-fitting hole formed in the non-connecting end of the two support arms; a stabilizer link bracket protrudingly disposed on one of the support arms; and a sliding column bushing press-fitting hole which is formed on the outer side wall of one support arm and faces the other support arm. The lower A-shaped arm structure provided by the embodiment of the invention is integrally formed and made of light materials such as aluminum alloy and the like, so that the number of parts, the number of dies and process steps are reduced, the cost is saved on the basis of ensuring the original functions of the lower A-shaped arm structure, the quality is reduced, the consistency of products is ensured, the light weight of a vehicle is favorably realized, and the controllability of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicle parts, in particular to a lower A-shaped arm structure, a lower A-shaped arm assembly, a suspension system and a vehicle.
Background
Along with the fact that 'energy conservation and environmental protection' are more and more the topics of wide attention, light weight is also widely applied to the field of vehicles, and excellent oil saving performance can be achieved while the controllability is improved. Since the weight of the vehicle chassis is relatively large, how to reduce the weight of the vehicle chassis becomes an important goal for reducing the weight of the vehicle.
Specifically, the lower A word arm structure of current vehicle adopts stamping process to obtain the upper plate respectively, the hypoplastron, the reinforcing plate, the bumper shock absorber support, the ball round pin mount pad, spacing support, stabilizer bar connecting rod support, the sleeve pipe etc. and mainly becomes an organic whole through welded form processing, it contains the spare part more, the mould quantity that needs is also more, the process is numerous and diverse, and the error that welding process leads to is great, part finished product uniformity is relatively poor, and the material is mostly B510L, make the weight of lower A word arm structure great, it is unsatisfactory at control cost and the effect that realizes on the vehicle lightweight.
Disclosure of Invention
The technical purpose to be achieved by the embodiment of the invention is to provide a lower A-shaped arm structure, a lower A-shaped arm assembly, a suspension system and a vehicle, which are used for solving the problems that the current lower A-shaped arm structure is heavy in weight, complicated in manufacturing process and large in welding error, and further the product consistency is poor.
In order to solve the above technical problem, an embodiment of the present invention provides a lower a-arm structure, including:
forging a lower A-shaped arm body integrally formed by aluminum alloy, wherein the lower A-shaped arm body comprises two support arms with one ends connected with each other and a cross arm arranged between the two support arms, the two support arms are arranged at a first preset angle, and two ends of the cross arm are respectively connected with the inner side wall of one support arm;
the ball pin press mounting holes are formed in the connecting ends of the two support arms;
the lower A-shaped arm bushing press-fitting holes are formed in the non-connecting ends of the two support arms opposite to the connecting ends;
a stabilizer link bracket protrudingly disposed on one of the support arms;
and a sliding column bushing press-fitting hole which is formed in the outer side wall of one support arm and faces the other support arm is communicated with a hole structure which is formed by the two support arms and the cross arm in a surrounding mode.
Preferably, in the lower a-arm structure, the surface wall of at least one side of the support arm and/or the cross arm is provided with a first concave groove, and the surface wall is adjacent to the outer side wall.
Specifically, as described above in the lower a-arm structure, the stabilizer link bracket is protrudingly provided on the surface wall of one arm.
Preferably, in the lower a-arm structure, the other arm opposite to the sliding column bushing press-fitting hole is provided with a bending portion bending in a direction away from the sliding column bushing press-fitting hole.
Further, according to the lower A-shaped arm structure, chamfers are arranged at the inlets of the lower A-shaped arm bushing press-fitting hole, the ball pin press-fitting hole and/or the sliding column bushing press-fitting hole.
Specifically, as described above, in the lower a-arm structure, two mounting planes are provided at the connecting end around the ball pin mounting hole, and the two mounting planes are arranged in parallel.
Another preferred embodiment of the present invention also provides a lower a-arm assembly, comprising: the ball pin assembly, the clamp spring, the lower A-shaped arm bushing, the sliding column bushing and the lower A-shaped arm structure are arranged on the sliding column;
the ball pin assembly is connected with the lower A-shaped arm structure in a matched manner through the snap spring and the ball pin press-fitting hole in the lower A-shaped arm structure;
the lower A-shaped arm bushing is pressed in the lower A-shaped arm bushing pressing hole;
the sliding column bushing is pressed in the sliding column bushing pressing hole.
Preferably, the lower a-arm assembly, the lower a-arm bushing and the strut bushing as described above each comprise: the rubber body is arranged between the inner sleeve and the outer sleeve;
wherein, the rubber body encircles the axis interval and is provided with a plurality of second recesses.
Still another preferred embodiment of the present invention also provides a suspension system including: the frame assembly, the steering knuckle, the sliding column assembly, the stabilizer bar connecting rod, the stabilizer bar assembly and the lower A-shaped arm assembly are arranged on the frame;
the lower A-shaped arm assembly is respectively connected with the frame assembly, the steering knuckle, the sliding column assembly and the stabilizer bar connecting rod, and the stabilizer bar connecting rod is further connected with the stabilizer bar assembly.
Still another preferred embodiment of the present invention also provides a vehicle including: a suspension system as described above.
Compared with the prior art, the lower A-shaped arm structure, the lower A-shaped arm assembly, the suspension system and the vehicle provided by the embodiment of the invention at least have the following beneficial effects:
the lower A-shaped arm structure provided by the embodiment of the invention is integrally formed and made of light materials such as aluminum alloy and the like, so that the number of parts, the number of dies and process steps are reduced, the cost is saved on the basis of ensuring the original functions of the lower A-shaped arm structure, the quality is reduced, the consistency of products is ensured, the light weight of a vehicle is favorably realized, and the controllability of the vehicle is improved.
Drawings
FIG. 1 is a schematic structural diagram of a lower A-arm structure according to the present invention;
FIG. 2 is a second schematic structural view of the lower A-arm structure of the present invention;
FIG. 3 is a schematic structural view of a conventional lower A-arm assembly;
FIG. 4 is a schematic structural view of a conventional lower A-arm assembly;
FIG. 5 is a schematic view of the lower A-arm assembly of the present invention;
FIG. 6 is a schematic view of the lower A-arm bushing and/or strut bushing of the present invention;
FIG. 7 is a schematic view of the installation of the lower A-arm assembly of the present invention.
[ description of reference ]
1. A lower A-shaped arm structure; 2. a support arm; 201. a bending section; 202. a mounting plane; 3. a cross arm; 4. a ball pin press mounting hole; 5. a lower A-shaped arm bushing press-fitting hole; 6. a stabilizer link bracket; 7. a sliding column bushing press-fitting hole; 8. a hole structure; 9. a first groove; 10. chamfering; 11. a ball pin assembly; 12. a clamp spring; 13. a lower A-shaped arm bushing; 14. a strut bushing; 1501. outer sleeve 1502, inner sleeve; 1503. a rubber body; 1504. a second groove; 16. a frame assembly; 17. a knuckle; 18. a strut assembly; 19. a stabilizer link.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a lower a-arm structure, including:
the lower A-shaped arm body is integrally formed by forging aluminum alloy, the lower A-shaped arm body comprises two support arms 2 with one ends connected with each other and a cross arm 3 arranged between the two support arms 2, the two support arms 2 are arranged at a first preset angle, and two ends of the cross arm 3 are respectively connected with the inner side wall of one support arm 2;
ball pin press-fitting holes 4 formed in the connecting ends of the two support arms 2;
a lower A-shaped arm bushing press-fitting hole 5 which is arranged at the non-connecting end of the two support arms 2 opposite to the connecting end;
a stabilizer link bracket 6 protrudingly provided on one of the support arms 2;
and a sliding column bushing press-fitting hole 7 formed on the outer side wall of one support arm 2 and facing the other support arm 2, wherein the sliding column bushing press-fitting hole 7 is communicated with a hole structure 8 surrounded by the two support arms 2 and the cross arm 3.
In a preferred embodiment of the present invention, there is provided a lower a-arm structure 1 comprising: by aluminum alloy material through forging technology integrated into one piece's lower A word arm body, ball round pin pressure equipment hole 4 has been seted up on A word arm body down, A word arm bush pressure equipment hole 5 and traveller bush pressure equipment hole 7 down, and the outstanding stabilizer bar connecting rod support 6 that is provided with on the A word arm body down for satisfy the demand of being connected the suspension system who constitutes the vehicle with frame etc. compare in the schematic diagram of A word arm structure under the current as shown in fig. 3 and fig. 4, avoided a word arm structure split into a plurality of spare parts down, for example: the upper plate 100, the lower plate 200, the reinforcing plate 300, the shock absorber bracket 400, the ball pin mounting seat 500, the limiting bracket 600, the stabilizer link bracket 700, the bushing 800, the shaft lever 900 and the like, and each part is obtained by a stamping process and is combined into a whole by welding and other processes, so that the manufacturing process is simplified, the number of dies is reduced, and the cost is saved; meanwhile, as the connection is not needed through a welding process, the problems of poor product consistency, related assembly quality problems in the later period and part failure caused by welding seam insufficient welding caused by large welding process errors are avoided, and the consistency and the product performance of the product are ensured; the aluminum alloy is used as a light material, has the characteristics of low density and high strength, realizes the light weight of the lower A-shaped arm structure 1 on the premise of meeting the strength requirement of the lower A-shaped arm structure 1, is favorable for the light weight of a vehicle chassis and the whole vehicle, and improves the controllability of the vehicle; preferably, the aluminum alloy is a 5-series aluminum alloy.
Specifically, lower A word arm body includes two one end interconnect's support arm 2 and sets up the xarm 3 between two support arms 2, be the first angle setting of predetermineeing between two support arms 2, the both ends of xarm 3 are connected with the inside wall of a support arm 2 respectively, through the setting of xarm 3, make lower A word arm body have the triangle-shaped structure, the joint strength between two support arms 2 has been guaranteed, and make and constitute a hole structure 8 between xarm 3 and two support arms 2, the seting up of traveller bush pressure equipment hole 7 and the installation of traveller bush 14 have both been satisfied, the quality of lower A word arm body has further been alleviateed with the form of fabrication hole or fretwork simultaneously.
The stabilizer link bracket 6 is protrudingly arranged on one support arm 2, which is beneficial to avoiding the stabilizer link 19 from interfering with the lower A-shaped arm structure 1 and ensuring the normal operation of the suspension system of the vehicle.
In summary, the lower a-shaped arm structure 1 provided by the embodiment of the present invention is integrally formed and made of light materials such as aluminum alloy, etc., so as to reduce the number of parts, the number of dies, and the process steps, save the cost, reduce the quality, ensure the consistency of the product, facilitate the realization of the light weight of the vehicle, and improve the controllability of the vehicle on the basis of ensuring the original functions of the lower a-shaped arm structure 1.
Preferably, in order to ensure the precision of the ball pin press-fitting hole 4, the lower a-shaped arm bushing press-fitting hole 5 and the sliding column bushing press-fitting hole 7, finish machining is required by means of machining.
Referring to fig. 2, preferably, in the lower a-arm structure as described above, the arm 2 and/or the cross arm 3 are provided with a first concave groove 9 on at least one surface wall, which is adjacent to the outer side wall.
In another preferred embodiment of the present invention, the upper surface wall of the arm 2 and/or the cross arm 3 is provided with a first groove 9, so that the weight of the lower a-shaped arm structure 1 is further reduced, and at the same time, the cross section of the arm 2 and/or the cross arm 3 in the vertical and length directions is formed in a concave shape, wherein the side wall of the first groove 9 forms a reinforcing rib, which is beneficial to improving the original structural strength of the arm 2 and/or the cross arm 3, so that the arm 2 and/or the cross arm 3 can bear higher load impact.
In the invention, if all surfaces of the lower A-shaped arm body are orthographically projected, the surface with the A-shaped projection shape is the upper surface or the lower surface of the lower A-shaped arm, wherein the surface corresponding to the support arm 2 is the surface wall of the support arm 2, and the surface corresponding to the cross arm 3 is the surface wall of the cross arm 3; the side wall of one arm 2 facing the other arm 2 is an inner side wall and the side wall facing away from the other arm 2 is an outer side wall.
Referring to fig. 1, specifically, as in the lower a-arm structure described above, the stabilizer link bracket 6 is protrudingly provided on a surface wall of one arm 2.
In an embodiment of the present invention, the stabilizer link bracket 6 is protrudingly provided on a surface wall of one arm 2, preferably on a side facing away from the ground after the lower a-arm body is mounted on the vehicle, for facilitating connection with the stabilizer link 19.
Specifically, at least one bracket mounting hole is formed in the stabilizer bar connecting rod bracket 6, and mounting surfaces on two sides of the bracket mounting hole are parallel to each other, so that mounting stability is guaranteed.
Alternatively, the stabilizer link bracket 6 and the first groove 9 may be located on the same side surface wall of the same arm 2.
Referring to fig. 1 or 2, preferably, in the lower a-arm structure as described above, the other arm 2 opposite to the strut bushing press-fitting hole 7 is provided with a bent portion 201 bent in a direction away from the strut bushing press-fitting hole 7.
In another preferred embodiment of the present invention, a bent portion 201 is provided on the other arm 2 opposite to the spool bush press-fitting hole 7, and the bent portion 201 is bent in a direction away from the spool bush press-fitting hole 7, so that a portion of the hole structure 8 along the axis of the spool bush press-fitting hole 7 is extended, thereby facilitating the installation of the spool bush 14 in the spool bush press-fitting hole 7 and the connection of the spool bush 14 and the spool by bolts.
Referring to fig. 1, 2 and 5, further, in the lower a-arm structure described above, the inlets of the lower a-arm bushing press-fitting hole 5, the ball pin press-fitting hole 4 and/or the strut bushing press-fitting hole 7 are provided with chamfers 10.
In a specific embodiment of the invention, a chamfer 10 is arranged at an inlet of the lower a-shaped arm bushing press-fitting hole 5, the ball pin press-fitting hole 4 and/or the sliding column bushing press-fitting hole 7, so that the size of the inlet is larger than that of the hole, the lower a-shaped arm bushing 13, the ball pin assembly 11 and/or the sliding column bushing 14 are conveniently positioned, the press-fitting process is more convenient and faster through the guiding transition of the chamfer 10, and the cutting of the lower a-shaped arm structure 1 is avoided.
Referring to fig. 1 and 2, in particular, as in the lower a-arm structure described above, two mounting planes 202 are provided around the ball pin mounting hole at the connecting end, and the two mounting planes 202 are arranged in parallel.
In another preferred embodiment of the present invention, to ensure the installation stability of the ball pin assembly 11, two parallel installation planes 202 are disposed around the ball pin installation hole at the connection end, which is beneficial to ensure the normal installation of the ball pin assembly 11. Preferably, a second preset angle is formed between the mounting plane 202 and a projection plane of which the orthographic projection of the lower A-shaped arm body is in an A shape, so that the normal mounting of the ball pin assembly 11 on the vehicle is guaranteed.
Referring to fig. 5, another preferred embodiment of the present invention further provides a lower a-arm assembly, comprising: the ball pin assembly 11, the clamp spring 12, the lower A-shaped arm bushing 13, the sliding column bushing 14 and the lower A-shaped arm structure 1;
the ball pin assembly 11 is connected with the lower A-shaped arm structure 1 in a matched manner through a snap spring 12 and a ball pin press-fitting hole 4 in the lower A-shaped arm structure 1;
the lower A-shaped arm bushing 13 is pressed in the lower A-shaped arm bushing pressing hole 5;
the spool bush 14 is press-fitted into the spool bush press-fitting hole 7.
In a preferred embodiment of the present invention, a lower a-arm assembly comprises: the ball pin assembly 11, the snap spring 12, the lower A-shaped arm bushing 13, the sliding column bushing 14 and the lower A-shaped arm structure 1 are arranged, wherein the ball pin assembly 11 is connected with the lower A-shaped arm structure 1 in a matched manner through the snap spring 12 and the ball pin press-fitting hole 4 in the lower A-shaped arm structure 1, the snap spring 12 fixes the ball pin assembly 11 for the second time, and the ball pin assembly 11 is ensured to have enough pulling force on the lower A-shaped arm structure 1; the lower A-shaped arm bushing 13 is pressed in the lower A-shaped arm bushing press-fitting hole 5 and is in interference fit with the lower A-shaped arm bushing press-fitting hole 5; the sliding column bushing 14 is pressed in the sliding column bushing pressing hole 7 and is in interference fit with the sliding column bushing pressing hole 7; the integrity of the lower A-shaped arm assembly is ensured. Meanwhile, the lower A-shaped arm structure 1 is made of light aluminum alloy through forging process integrated molding, the number of parts, the number of dies and process steps are reduced, welding connection is avoided, on the basis that the original functions of the lower A-shaped arm assembly are achieved, cost is saved, quality is reduced, the consistency of products is guaranteed, the light weight of a vehicle is facilitated to be achieved, and the controllability of the vehicle is improved.
Referring to fig. 6, preferably, the lower a-arm assembly, lower a-arm bushing 13 and strut bushing 14 as described above each include: an outer sleeve 1501, an inner sleeve 1502, and a rubber body 1503 disposed between the inner sleeve 1502 and the outer sleeve 1501;
wherein, rubber body 1503 encircles the axis and is provided with a plurality of second grooves 1504 at intervals.
In another preferred embodiment of the present invention, the lower a-arm bushing 13 and the strut bushing 14 each include: an outer sleeve 1501, an inner sleeve 1502, and a rubber body 1503 disposed between the inner sleeve 1502 and the outer sleeve 1501; the rubber body 1503 vulcanizes and bonds the inner sleeve 1502 and the outer sleeve 1501 together, and the rubber body 1503 is provided with a plurality of second grooves 1504 at intervals around a central axis, so that further weight reduction is facilitated, at least two different rigidities are provided for the lower A-shaped arm bushing 13 and the sliding column bushing 14 in the radial direction, and the smoothness and the maneuverability of the whole vehicle are facilitated to be improved; preferably, the end of the rubber body 1503 provided with the second groove 1504 is located at the entrance after installation, facilitating the knowledge of the bushing type.
Specifically, the outer sleeve 1501 and the outer shell of the ball and pin assembly 11 are steel materials having a hardness greater than that of aluminum alloys.
Referring to fig. 7, still another preferred embodiment of the present invention also provides a suspension system including: a frame assembly 16, a steering knuckle 17, a strut assembly 18, a stabilizer link 19, a stabilizer assembly and a lower A-arm assembly as described above;
wherein, lower A word arm assembly is connected with frame assembly 16, knuckle 17, traveller assembly 18 and stabilizer bar connecting rod 19 respectively, and stabilizer bar connecting rod 19 still is connected with the stabilizer bar assembly.
In a preferred embodiment of the present invention, there is also provided a suspension system comprising the lower a-arm assembly as described above, wherein the lower a-arm bush 13 press-fitted into the lower a-arm bush press-fitting hole 5 is connected to the frame assembly 16 by a bolt; the ball pin assembly 11 which is pressed in the ball pin pressing hole 4 is connected with the steering knuckle 17; the sliding column bushing 14 which is pressed in the sliding column bushing pressing hole 7 is connected with a fork-shaped structure at the lower end of the sliding column assembly 18 through a bolt; the stabilizer bar is connected to the stabilizer bar link bracket 6 on the arm 2 via a stabilizer bar link 19. By adopting the lower A-shaped arm, the number of parts, the number of dies and process steps are reduced, the cost is saved, the quality is reduced, the consistency of products is ensured, the light weight of the vehicle is favorably realized, and the controllability of the vehicle is improved.
Still another preferred embodiment of the present invention also provides a vehicle including: a suspension system as described above.
According to the vehicle provided by the embodiment of the invention, the weight and the cost of the whole vehicle are reduced by reducing the weight and the cost of the suspension system, so that the vehicle is beneficial to realizing the light weight of the vehicle and improving the controllability of the vehicle.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A lower A-arm structure, comprising:
the lower A-shaped arm body is integrally formed by forging aluminum alloy, the lower A-shaped arm body comprises two support arms (2) with one ends connected with each other and a cross arm (3) arranged between the two support arms (2), the two support arms (2) are arranged at a first preset angle, and two ends of the cross arm (3) are respectively connected with the inner side wall of one support arm (2);
ball pin press-fitting holes (4) formed in the connecting ends of the two support arms (2);
a lower A-shaped arm bushing press-fitting hole (5) which is formed in the non-connecting end of the two support arms (2) opposite to the connecting end;
a stabilizer link bracket (6) protrudingly provided on one of the support arms (2);
and a sliding column bushing press-fitting hole (7) formed in the outer side wall of one support arm (2) and facing the other support arm (2), wherein the sliding column bushing press-fitting hole (7) is communicated with the hole structure (8) formed by the two support arms (2) and the cross arm (3) in a surrounding manner.
2. A lower a-arm construction according to claim 1, characterised in that the surface wall of at least one side of the arm (2) and/or the cross arm (3) is provided with an inwardly recessed first recess (9), which is arranged adjacent to the outer side wall.
3. The lower a-arm structure according to claim 2, wherein the stabilizer link bracket (6) is protrudingly provided on a surface wall of one of the support arms (2).
4. The lower a-arm structure according to claim 1, wherein a bent portion (201) bent in a direction away from the strut bush press-fitting hole (7) is provided on the other arm (2) opposite to the strut bush press-fitting hole (7).
5. The lower A-arm structure according to claim 1, characterized in that a chamfer (10) is provided at the entrance of the lower A-arm bushing press-fitting hole (5), the ball pin press-fitting hole (4) and/or the strut bushing press-fitting hole (7).
6. The lower a-arm structure according to claim 1, wherein two mounting planes (202) are provided around the ball pin mounting hole at the connecting end, and the two mounting planes (202) are arranged in parallel.
7. A lower A-arm assembly, comprising: -a ball and pin assembly (11), -a circlip (12), -a lower a-arm bushing (13), -a sliding column bushing (14) and-a-arm structure (1) according to any of claims 1 to 6;
the ball pin assembly (11) is matched and connected with the lower A-shaped arm structure (1) through a clamp spring (12) and a ball pin press-fitting hole (4) in the lower A-shaped arm structure (1);
the lower A-shaped arm bushing (13) is pressed in the lower A-shaped arm bushing pressing hole (5);
the sliding column bushing (14) is pressed in the sliding column bushing pressing hole (7).
8. The lower a-arm assembly according to claim 7, wherein the lower a-arm bushing (13) and the strut bushing (14) each comprise: an outer sleeve (1501), an inner sleeve (1502) and a rubber body (1503) arranged between the inner sleeve (1502) and the outer sleeve (1501);
wherein, rubber body (1503) is provided with a plurality of second grooves (1504) around the axis interval.
9. A suspension system, comprising: a frame assembly (16), a steering knuckle (17), a strut assembly (18), a stabilizer link (19), a stabilizer assembly, and the lower a-arm assembly of claim 7 or 8;
the lower A-shaped arm assembly is respectively connected with the frame assembly (16), the steering knuckle (17), the sliding column assembly (18) and the stabilizer bar connecting rod (19), and the stabilizer bar connecting rod (19) is further connected with the stabilizer bar assembly.
10. A vehicle, characterized by comprising: the suspension system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011088559.6A CN112172429A (en) | 2020-10-13 | 2020-10-13 | Lower A word arm structure, lower A word arm assembly, suspension system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011088559.6A CN112172429A (en) | 2020-10-13 | 2020-10-13 | Lower A word arm structure, lower A word arm assembly, suspension system and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN112172429A true CN112172429A (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011088559.6A Pending CN112172429A (en) | 2020-10-13 | 2020-10-13 | Lower A word arm structure, lower A word arm assembly, suspension system and vehicle |
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Application publication date: 20210105 |