CN217892424U - Automobile front overhang lower swing arm assembly and automobile - Google Patents

Abstract

The utility model provides an automobile front suspension lower swing arm assembly and an automobile, wherein the lower swing arm assembly comprises a lower swing arm with a plurality of end parts, one end part is provided with an installation part for installing a ball pin, and a weakening part is arranged on the lower swing arm and is close to the installation part; the installation department is under the exogenic action, because of the bending deformation of weakening portion can move towards the side of weakening portion place. The utility model discloses a swing arm assembly under car front overhang when the swing arm receives the impact force of side direction down, and reduction portion department takes place deformation and is crooked, and the installation department on the swing arm then can be towards swing arm one side bending down this moment to avoid the ball round pin to deviate from, prevent because of the ball round pin deviates from the vehicle that leads to out of control, be favorable to the promotion of vehicle security of traveling.

Description

Automobile front overhang lower swing arm assembly and automobile

Technical Field

The utility model relates to an automobile parts technical field, in particular to swing arm assembly under car front overhang.

The utility model discloses still relate to an automobile.

Background

The suspension of the automobile is an assembly for connecting all transmission connecting devices between an automobile body and wheels of the automobile, and mainly has the functions of transmitting all force and moment acting between the wheels and the automobile body, relieving the vibration transmitted from the wheels to the automobile body in the driving process and improving the driving stability and comfort.

The front suspension lower control arm, namely the lower swing arm, is one of main force transmission parts of a front suspension of an automobile chassis, has a suspension part with functions of supporting lateral force and horizontal force, and determines the geometrical shape of a suspension system. The swing arm is generally connected with the vehicle body and the vehicle axle in a flexible connection mode such as a ball pin and a rubber dust cover, and sometimes is connected with the vehicle axle in a rigid connection mode. The swing arm is generally manufactured by adopting a steel plate stamping part or a casting and forging process. Whether the strength of the front swing arm can meet the requirement in the driving process of the automobile directly influences the driving safety of the automobile.

The front suspension lower swing arm is one of main parts of a front suspension, and has high strength to meet the driving safety, but in the driving process, if the following special misuse working conditions occur, for example, a wheel is impacted laterally, and when the lower swing arm is stressed laterally, a ball pin can be separated from a ball pin seat, so that the vehicle is out of control, and a more serious safety problem is brought.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a front suspension swing arm assembly of an automobile to reduce the possibility of disengagement of a ball pin and improve the driving safety.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

an automobile front suspension lower swing arm assembly comprises a lower swing arm with a plurality of end parts, wherein one end part of the lower swing arm is provided with a mounting part for mounting a ball pin, a weakening part and a weakening part, and the weakening part is arranged on the lower swing arm and is close to the mounting part; the installation department is under the exogenic action, because of the bending deformation of weakening portion can move towards the side of weakening portion place.

Further, be equipped with the depressed part of indent on the lower swing arm, the depressed part by the installation department to the middle part of lower swing arm extends, lower swing arm has and is located the side rib of depressed part width direction both sides, the weakening portion is constructed as setting up at least one of it crumple groove on the side rib.

Furthermore, the side ribs are respectively provided with the collapse grooves, and the collapse grooves extend along the width direction of the concave parts and are arranged on the side ribs; the depth value of the crumple groove on one side rib is larger than that of the crumple groove on the other side rib.

Furthermore, the depth value of the crumple groove on one side rib is 1.5-2.5 mm greater than that of the crumple groove on the other side rib.

Further, the depth value of the crumple groove is not more than 6.5mm.

Furthermore, the width H of the top of the collapsing groove is 23-24 mm.

Further, the installation department is fixed the tip of lower swing arm, the lower swing arm deviates from one side of weakening portion is fixed with the reinforcing plate, the reinforcing plate has the board main part, and with the board main part links firmly and partly surrounds the head of the U-shaped at installation department edge.

Furthermore, the reinforcing plate comprises bent edges, the bent edges are bent from two sides of the plate main body in the width direction to the lower swing arm and fixedly connected to the lower swing arm, and a connecting edge fixedly connected with the lower swing arm is arranged on the other side of the plate main body, opposite to the head; and/or the thickness of the reinforcing plate is 4 mm-5 mm.

Furthermore, one side of the lower swing arm, which is far away from the weakening part, forms a stamping groove due to stamping, a sealing plate is covered on the stamping groove, and one end of the sealing plate, which is close to the plate main body, is provided with a U-shaped notch.

Compared with the prior art, the utility model discloses following advantage has:

automobile front overhang lower swing arm assembly, when the swing arm received the side direction impact force down, reduction portion department takes place deformation and crooked, installation department on the swing arm then can be towards lower swing arm one side bending this moment to avoid the ball round pin to deviate from, prevent because of the ball round pin deviates from the vehicle that leads to out of control, be favorable to the promotion of vehicle security of traveling.

In addition, the collapse groove on the side rib can weaken the strength of the position of the lower swing arm part to a certain extent, and the mounting part can be bent by taking the collapse groove as a shaft when the lower swing arm receives lateral impact force, so that the ball pin can be prevented from being separated, and the vehicle is prevented from being out of control.

In addition, the mounting part is fixed at the end part of the lower swing arm, the other side of the weakening part relative to the lower swing arm is fixed with the reinforcing plate, and the reinforcing plate is semi-surrounded on the edge of the mounting part, so that the fatigue strength between the mounting part and the lower swing arm can be improved.

The utility model also provides a car, be equipped with on the car as above the car front overhang lower swing arm assembly. The utility model discloses an automobile is through adopting as above the automobile front overhang swing arm assembly, can promote the pull out power of ball round pin, utilize the groove of collapsing to carry out certain reduction to the intensity of lower swing arm part position simultaneously, when the vehicle side impact, thereby the swing arm is bent and is avoided the ball round pin to deviate from in order to prevent that the vehicle is out of control, and then can promote the security performance that the vehicle travel.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of an overall structure of a front suspension swing arm assembly of an automobile according to a first embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a schematic structural view of another view angle of the front suspension swing arm assembly of the first embodiment of the present invention;

fig. 4 is a schematic structural view of a reinforcing plate according to a first embodiment of the present invention.

Description of reference numerals:

1. a lower swing arm; 10. a recessed portion; 11. a side rib; 110. a collapsing tank; 12. punching a groove; 13. a front bushing connecting portion; 14. a rear bushing connecting portion; 15. positioning holes; 2. an installation part; 20. a ball head pin boss; 21. a ball pin; 3. a reinforcing plate; 30. a plate main body; 300. bending edges; 301. a connecting edge; 31. a head portion; 4. closing the plate; 40. a first gap; 41. a second gap.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that, if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms first, second, etc. in this specification are not necessarily all referring to the same item, but are to be construed as indicating or implying any particular importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a swing arm assembly under car front overhang prevents because of the vehicle that ball round pin 21 deviates from and leads to out of control, is favorable to the promotion of vehicle driving safety nature.

Overall structure is last, this swing arm assembly under car front overhang is including the lower swing arm 1 that has a plurality of tip, and its one end is equipped with the installation department 2 that is used for installing ball round pin 21, and the weakening portion, the weakening portion setting is on swing arm 1 down to arrange near installation department 2, installation department 2 is under the exogenic action, because of the crooked deformation of weakening portion can move towards the side of weakening portion place.

It should be noted that the lower swing arm 1 has three end portions, one of which is the mounting portion 2, and the other two end portions are a front bushing connecting portion 13 and a rear bushing connecting portion 14, which are both used for connecting with the vehicle frame, and since the front bushing connecting portion 13 and the rear bushing connecting portion 14 are the same as the related structures in the lower swing arm 1 in the prior art, the front bushing connecting portion 13 and the rear bushing connecting portion 14 are not specifically described in this embodiment. In addition, a through positioning hole 15 is further formed in the lower swing arm 1, and the positioning hole 15 can assist in positioning when the lower swing arm 1 is installed, so that the lower swing arm 1 can be installed conveniently.

Based on the above overall design, an exemplary structure of the front suspension lower swing arm assembly of the present embodiment is shown in fig. 1, one side of the lower swing arm 1 is provided with a concave recess 10, the concave recess 10 extends from the mounting portion 2 to the middle of the lower swing arm 1, the lower swing arm 1 has side ribs 11 located at both sides of the width direction of the concave recess 10 due to the provision of the concave recess 10, and the weakening portion is configured as a crush slot 110 provided on at least one side rib 11. The longitudinal direction of the recessed portion 10 is the same as the longitudinal direction of the lower swing arm 1, and the recessed portion 10 is also provided in accordance with the shape of the lower swing arm 1.

In this embodiment, the number of the crush slots 110 may be one, and the crush slots 110 on one side rib 11 can guide the mounting portion 2 to bend toward the lower swing arm 1 when the mounting portion 2 receives a lateral impact force, so as to prevent the ball pin 21 from coming off. In a preferred embodiment of the present invention, each side rib 11 is provided with a crush can 110, and the crush can 110 is provided on the side rib 11 so as to extend in the width direction of the recess 10.

Specifically, the two crush slots 110 are provided along the width direction of the recess 10 so that the mounting portion 2 can be bent with reference to the positions of the two crush slots 110 when the mounting portion 2 receives a lateral impact force.

And can understand that, because the setting of groove 110 that contracts bursts can carry out certain weakening to the intensity that lower swing arm 1 corresponds the position, side rib 11 after the weakening alright when receiving the yawing force, produce deformation in groove 110 department that contracts bursts, and then make lower swing arm 1 buckle and drive installation department 2 motion to avoid ball round pin 21 to deviate from, prevent that the vehicle is out of control. Here, it is preferable that the contour of the crush can 110 is curved to facilitate the forced deformation of the lower swing arm 1.

In addition, in order to prevent the strength of the lower swing arm 1 from being excessively weakened, in the present embodiment, the depth value of the crush slot 110 on one side rib 11 is greater than the depth value of the crush slot 110 on the other side rib 11. The two crumple grooves 110 have different depths, so that the strength of the lower swing arm 1 can be ensured, and the installation part 2 can be well guided to bend towards one side of the lower swing arm 1, so that the ball pin 21 is prevented from being separated.

Referring to fig. 1 and 2, regarding the size of the crush can 110, in the present embodiment, the depth of the crush can 110 on one side rib 11 is 1.5mm to 2.5mm greater than the depth of the crush can 110 on the other side rib 11. For example, the depth of the crush groove 110 in one of the ribs 11 is 1.5mm,2mm,2.5mm, or the like, larger than the depth of the crush groove 110 in the other rib 11. In addition, the depth of the crush can 110 is not greater than 6.5mm. For example, when the depth of one crush slot 110 is 6.5mm, the depth of the other crush slot 110 is between 4mm and 5mm.

It should be noted that the depth of the concave portion 10 is greater than 6.5mm, so as to ensure the strength of the position of the crush slot 110 on the side rib 11. The width H of the top of the crush can 110 is 23mm to 24mm, and the width H of the top of the crush can 110 is 23mm,23.5mm,24mm, or the like. It should be noted that the above-mentioned size of the crush can 110 is only illustrated in the present embodiment, and can be modified adaptively according to the actual use condition of the vehicle, and besides the above-mentioned form of the crush can 110, the weakening portion can also weaken the strength of the corresponding position of the lower swing arm 1 by making a through hole in the lower swing arm 1.

As shown in fig. 3 and 4, the mounting portion 2 is fixed at an end of the lower swing arm 1, a reinforcing plate 3 is fixed at a side of the lower swing arm 1 away from the weakened portion, and the reinforcing plate 3 has a plate main body 30, and a U-shaped head 31 fixedly connected to the plate main body 30 and semi-surrounding an edge of the mounting portion 2. The mounting part 2 comprises a ball head pin seat 20 fixed at the end part of the lower swing arm 1, and the ball pin 21 faces the side of the weakening part after being mounted.

With the above description, it can be known that what is adopted between ball stud receptacle 20 and lower swing arm 1 is split installation, and to the connected mode between ball stud receptacle 20 and the end of lower swing arm 1, as a preferred embodiment, ball stud receptacle 20 is fixed on lower swing arm 1 in a spot welding manner, so set up, can increase the diameter of ball stud receptacle 20, solved and directly installed ball stud receptacle 20 to the restriction of ball stud receptacle 20 diameter in trompil on lower swing arm 1, the diameter of ball stud receptacle 20 increases, mean that the wall thickness of ball stud receptacle 20 can increase, increase as the wall thickness of ball stud receptacle 20, just can improve the pull-out force of ball stud 21, further prevent the vehicle runaway phenomenon that ball stud 21 deviates from and leads to, be favorable to the promotion of vehicle driving safety.

In addition, referring to fig. 3 and 4, the reinforcing plate 3 further includes a bending edge 300 bent from two sides of the plate main body 30 in the width direction to the lower swing arm 1 and fixedly connected to the lower swing arm 1, a connecting edge 301 is provided between the two bending edges 300, the connecting edge 301 is located on the other side of the upper head 31 of the plate main body 30, and the connecting edge 301 is fixedly connected to the lower swing arm 1.,

the reinforcing plate 3 is connected with the lower swing arm 1 and the ball head pin boss 20 in a welding mode, and the head 31 is semi-surrounded on the edge of the ball head pin boss 20, so that the fatigue strength between the ball head pin boss 20 and the lower swing arm 1 can be improved. It should be noted that the reinforcing plate 3 is preferably positioned to avoid the crush slot 110 on the lower swing arm 1, that is, the crush slot 110 does not fall into the projection of the reinforcing plate 3, so as to improve the fatigue strength and not hinder the bending of the lower swing arm 1. The thickness of the reinforcing plate 3 is preferably 4mm to 5mm, and for example, the thickness of the reinforcing plate 3 may be 4mm,5mm, or the like.

It is worth mentioning that lower swing arm 1 adopts the mode of punching press to make, and one side that lower swing arm 1 deviates from the weakening portion forms punching press groove 12 because of the punching press, and the closing plate 4 has been stamped on punching press groove 12, and closing plate 4 is close to the one end of board main part 30, has the opening of U-shaped. Specifically, as shown in fig. 3, since the plate main body 30 has the connecting edge 301, and the connecting edge 301 is located so as to extend toward the sealing plate 4 and be connected to the lower swing arm 1, in order to prevent the sealing plate 4 from interfering with the connecting edge 301, the opening in the sealing plate 4 is mainly to avoid the connecting edge 301, and the weakening portion does not fall into the projection of the opening in the sealing plate 4, so that the strength of the lower swing arm 1 can be improved and the bending of the lower swing arm 1 can be prevented.

Specifically, one end of the closing plate 4 close to the mounting portion 2 has a first notch 40, the other end of the closing plate 4 is close to the rear bushing connecting portion 14, and the end of the closing plate 4 close to the rear bushing connecting portion 14 has a second notch 41, two edges of the closing plate 4 in the length direction are respectively connected with two edges of the lower swing arm 1 in the length direction, and the closing plate 4 and the lower swing arm 1 are connected in a welding manner. The setting of shrouding 4 can improve the joint strength of swing arm 1 down.

This embodiment swing arm assembly under car front overhang, when lower swing arm 1 receives certain impact, the department that weakens takes place deformation and bending, installation department 2 on the swing arm 1 then can be towards swing arm 1 one side bending down at this moment, thereby avoid ball round pin 21 to deviate from, and ball round pin seat 20 adopts the components of a whole that can function independently setting with lower swing arm 1, can increase the diameter of ball round pin seat 20, the restriction of direct trompil installation ball round pin seat 20 to ball round pin seat 20 diameter on swing arm 1 down has been solved, the wall thickness of ball round pin seat 20 increases, just can improve ball round pin 21's the power of pulling out, prevent the vehicle out of control because of ball round pin 21 deviates from and leads to, be favorable to the promotion of vehicle driving safety.

Example two

The embodiment relates to an automobile, wherein an automobile front suspension lower swing arm assembly is arranged on the automobile according to the embodiment I. The automobile of this embodiment is through adopting embodiment one the automobile front overhang pendulum arm assembly, can promote the pull-out power of ball round pin 21, utilizes the groove 110 that bursts to carry out certain weakening to the intensity that lower swing arm 1 corresponds the position simultaneously, when the vehicle side impact, thereby lower swing arm 1 bends and avoids ball round pin 21 to deviate from in order to prevent the vehicle out of control, and then can promote the security performance that the vehicle went.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An automobile front suspension lower swing arm assembly comprises a lower swing arm (1) with a plurality of ends, wherein the ends are provided with installation parts (2) for installing ball pins (21), and the automobile front suspension lower swing arm assembly is characterized in that:

a weakening portion provided on the lower swing arm (1) and arranged close to the mounting portion (2); the installation part (2) can move towards the weakened part due to the bending deformation of the weakened part under the action of external force.

2. The automotive front overhang swing arm assembly of claim 1, further comprising:

be equipped with depressed part (10) of indent on swing arm (1) down, depressed part (10) by installation department (2) to the middle part of swing arm (1) extends down, swing arm (1) has down and is located side rib (11) of depressed part (10) width direction both sides, the part of weakening is constructed as setting up at least one of it crumple groove (110) on side rib (11).

3. The automotive front overhang swing arm assembly of claim 2, further comprising:

the side ribs (11) are respectively provided with the collapse grooves (110), and the collapse grooves (110) extend along the width direction of the concave parts (10) and are arranged on the side ribs (11); the depth value of the crush slot (110) on one side rib (11) is larger than that of the crush slot (110) on the other side rib (11).

4. The vehicle front overhang swing arm assembly of claim 3, wherein:

the depth value of the crumple groove (110) on one side rib (11) is 1.5-2.5 mm greater than that of the crumple groove (110) on the other side rib (11).

5. The automotive front overhang swing arm assembly of claim 4, wherein:

the depth value of the crumple tank (110) is not more than 6.5mm.

6. The automotive front overhang swing arm assembly of claim 2, further comprising:

the width H of the top of the collapse groove (110) is 23-24 mm.

7. The automotive front suspension swing arm assembly according to any one of claims 1 to 6, wherein:

installation department (2) are fixed the tip of swing arm (1) down, swing arm (1) deviates from down one side of weakening portion is fixed with reinforcing plate (3), reinforcing plate (3) have board main part (30), and with board main part (30) link firmly and half surround head (31) of the U-shaped at installation department (2) edge.

8. The vehicle front overhang swing arm assembly of claim 7, wherein:

the reinforcing plate (3) comprises bending edges (300), the bending edges (300) are bent from two sides of the plate main body (30) in the width direction to the lower swing arm (1) and fixedly connected to the lower swing arm (1), and a connecting edge (301) fixedly connected with the lower swing arm (1) is arranged on the other side of the plate main body (30) opposite to the head (31); and/or the thickness of the reinforcing plate (3) is 4-5 mm.

9. The automotive front overhang swing arm assembly of claim 7, further comprising:

one side of the lower swing arm (1) departing from the weakening part forms a stamping groove (12) due to stamping, a sealing plate (4) is covered on the stamping groove, and one end of the sealing plate (4) close to the plate main body (30) is provided with a U-shaped notch.

10. An automobile, characterized in that:

the automobile is provided with the automobile front suspension swing arm assembly according to any one of claims 1 to 9.

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