CN115891552A - An installation structure of a ball pin connecting rod assembly - Google Patents

Abstract

The invention discloses an installation structure of a ball pin connecting rod assembly, which comprises the ball pin connecting rod assembly, two opponent pieces and two nuts, wherein the ball pin connecting rod assembly comprises a connecting rod body and two ball pin components respectively arranged at the upper end and the lower end of the connecting rod body, and the two opponent pieces are respectively provided with a ball pin connecting structure used for being connected with the ball pin components; the two ball pin components comprise ball pin components, each ball pin component comprises a ball head body, a flange plate and a screw, the ball head bodies and the screws are arranged on the left side and the right side of the flange plates respectively, one surface of the flange plate, facing the screws, is an opponent side flange surface, and an extrusion boss is arranged on the opponent side flange surface. The invention can prevent the ball pin member from rotating, ensures that the nut can be screwed to reach the set screwing torque, does not need to change the structure of the counterpart member, and has the advantages of simple and convenient assembly, high assembly efficiency, good anti-rotation effect and low manufacturing cost.

Description

An installation structure of a ball pin connecting rod assembly

technical field

The invention relates to a suspension system, in particular to a mounting structure of a ball pin connecting rod assembly.

Background technique

With the development of automobile industry technology, and the improvement of people's requirements for car ride comfort and handling stability, the suspension system of most cars is designed with a stabilizer bar that can connect the left and right 1/4 suspensions at the same time. When the car is turning, the wheels of the left and right 1/4 suspensions jump in the opposite direction, and the stabilizer bar is twisted accordingly, which increases the stiffness of the suspension system, thereby reducing the tendency of the left and right 1/4 suspensions to run in the opposite direction. Reduce the roll angle of the body, thereby improving the handling performance of the vehicle; when the left and right 1/4 suspensions of the car jump in the same direction (such as passing speed bumps, etc.), the stabilizer bar does not twist, and the stiffness of the suspension system is almost unchanged or The change is small, so as to ensure that the suspension system can smoothly relieve the impact in the vertical direction of the vehicle and ensure the ride comfort of passengers.

According to the motion characteristics of the stabilizer bar, it is necessary to add a ball pin link assembly (that is, a link containing the ball pin) between the stabilizer bar and the suspension system parts (such as shock absorbers) that can release the swing degree of freedom. The ball pin connecting rod assembly is respectively connected to the stabilizer bar and the shock absorber through the ball pins at both ends, and is fastened by the thread at the end of the ball pin and the nut; when the nut is tightened, the thread pair is along the axis of the ball pin The axial force is generated in the direction, so that the stabilizer bar and the shock absorber are pressed by the connecting rod ball pin and the nut, and static friction is generated to overcome the force generated when the stabilizer bar is twisted to ensure the reliability of the connection. Due to the characteristics of the ball pin, in addition to being able to freely swing along its own radial direction, it can also rotate around its own axis, and the ball pin itself has a small moment to resist swinging and rotating, that is, the starting torque is small. When the starting torque of the ball pin rotation is not enough to overcome the torque that drives the ball pin to rotate due to the screwing process of the nut and the ball pin thread, it will cause the ball pin to rotate when it is assembled with the stabilizer bar or shock absorber; in addition, in order to realize The anti-loosening of the ball pin and the stabilizer bar or shock absorber after tightening usually uses a nut with anti-loosening function, but at the same time, it will increase the friction resistance of the thread pair during the tightening process, and further increase the rotation of the ball pin during the tightening process. Possibility, it may eventually lead to difficulty in tightening or failure to reach the set tightening torque.

CN211844014U discloses a kind of anti-rotation installation structure of the suspension stabilizer bar connecting rod, including stabilizer bar, stabilizer bar connecting rod and suspension components; the two ends of the stabilizer bar connecting rod are provided with ball heads, and the ball rod of the ball head is provided with a The outer side of the flange surface is provided with a hexagonal boss; the end of the stabilizer bar is provided with a mounting surface, and the side where the mounting surface matches the flange surface of the ball head is provided with a hexagonal groove. This installation structure does not need to use auxiliary tools to fix the ball head when assembling and disassembling the stabilizer bar connecting rod. It only needs to ensure that the hexagonal bosses on the ball heads at the upper and lower ends of the stabilizer bar connecting rod do not leave the corresponding suspension components and the upper hexagon of the stabilizer bar. The groove is sufficient, and then the nut is tightened or loosened, which improves the efficiency of assembly and disassembly of the connecting rod of the stabilizer bar. Undoubtedly, the technical solution disclosed in the above-mentioned patent documents is a beneficial attempt in the technical field, but this kind of stabilizer bar connecting rod not only needs to modify its own structure, but also needs to modify the structure of the stabilizer bar and the shock absorber, which increases the The production cost of the parts, and it is necessary to ensure that the directions of the two hexagonal bosses correspond to the positions of the two hexagonal grooves during assembly, so as to ensure that the upper and lower hexagonal bosses are inserted into the corresponding hexagonal grooves, and may need to be rotated during assembly The ball head is used to change the angle of the hexagonal boss, resulting in increased assembly man-hours.

Contents of the invention

In view of this, the object of the present invention is to provide an installation structure of the ball pin linkage assembly, which can prevent the ball pin member from rotating, ensure that the nut can be tightened to reach the set tightening torque, and does not need to change the structure of the counterpart, which is easy to assemble , high assembly efficiency, good anti-rotation effect and low manufacturing cost.

An installation structure of a ball pin link assembly in the present invention includes a ball pin link assembly, two counterparts and two nuts, the ball pin link assembly includes a link body and is respectively arranged on the The two ball pin assemblies at the upper and lower ends of the connecting rod body, the two counterparts are provided with ball pin connection structures for connecting with the ball pin assemblies; both of the ball pin assemblies include ball pin components , the ball pin member includes a ball body, a flange and a screw, the ball body and the screw are respectively arranged on the left and right sides of the flange, and the side of the flange facing the screw is The flange surface on the side of the counterpart, where an extruding boss is arranged on the flange surface of the counterpart; the screw passes through the connection hole of the ball pin connection structure, when the nut is threadedly connected with the screw and tightened When tightening the nut, the extrusion boss acts on the ball pin connection structure to deform the ball pin connection structure and form a groove for accommodating the extrusion boss.

Further, the extruded boss has been heat-treated, and its strength is greater than that of the ball-pin connection structure.

Further, the number of the extruding bosses is multiple, and the plurality of extruding bosses are arranged at intervals along the circumferential direction on the flange surface on the side of the counterpart, and the length direction of the plurality of extruding bosses is uniform. along the radial direction of the flange.

Further, the width of the plurality of extrusion bosses is not greater than 1/10 of the diameter of the flange.

Further, the two ball pin assemblies also include a steel sleeve and a ball pin seat, the steel sleeve is connected to the connecting rod body, the ball pin seat is embedded in the steel sleeve, and the ball pin seat The interior of the ball head is provided with a ball head installation cavity for connecting with the ball head body.

Further, the two ball pin assemblies also include a dust cover, a journal is provided on the side of the ball head facing the flange, and a right ring groove is formed between the journal and the flange , the steel sleeve is provided with a left ring groove, and the left and right parts of the dustproof cover are respectively connected with the left ring groove and the right ring groove through a circlip.

Further, the central axis of the connecting rod body is along the vertical direction, and the central axis of the ball pin member, the central axis of the steel sleeve and the central axis of the ball pin seat are all along the left and right direction.

Further, an anti-rotation groove is provided at the end of the screw rod away from the flange.

Further, one of the counterparts is a stabilizer bar, and the other counterpart is a shock absorber.

Further, the ball-pin connection structure of the stabilizer bar is an end sleeve, and the ball-pin connection structure of the shock absorber is a connecting bracket.

The beneficial effects of the present invention are:

1. In the process of installing the ball pin connecting rod assembly of the whole vehicle, during the process of tightening the nut, the extrusion boss can act on the ball pin connection structure to deform the ball pin connection structure and form a The groove of the extruding boss, the extruding boss and the groove are fitted together, can overcome the moment that the thread pair drives the ball pin member to rotate, thereby preventing the ball pin member from rotating, and ensuring that the nut can be tightened to reach the set tightening torque;

2. The present invention does not need to change the structure of the counterpart, and is easy to assemble, high in assembly efficiency, good in anti-rotation effect, and low in manufacturing cost.

Description of drawings

In order to make the purpose, technical scheme and beneficial effect of the present invention clearer, the present invention provides the following drawings for illustration:

Fig. 1 is the structural representation of ball pin member of the present invention;

Fig. 2 is the structural representation of ball pin assembly of the present invention;

Fig. 3 is a structural schematic diagram of the ball pin connecting rod assembly of the present invention (one ball pin assembly is shown in the form of an exploded diagram);

Fig. 4 is a partially enlarged schematic diagram of the connection between the ball pin linkage assembly of the present invention and one pair of counterparts (stabilizer bars);

Fig. 5 is a partially enlarged schematic diagram of the connection between the ball pin linkage assembly of the present invention and another counterpart (shock absorber).

The marks in the attached drawings are as follows:

1-Connecting rod body, 2-Ball pin assembly, 21-Ball pin member, 211-Ball body, 212-Flange plate, 2121-Flange surface on the counterpart side, 2122-Extrusion boss, 213-Screw, 2131-removal anti-rotation groove, 214-journal, 22-steel sleeve, 23-ball pin seat, 24-dust cover, 25-circlip;

3 - Nut;

4a-stabilizer bar, 4b-shock absorber, 41-ball pin connection structure.

Detailed ways

The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1-5, the installation structure of a ball pin linkage assembly in this embodiment includes a ball pin linkage assembly, two counterparts and two nuts 3, the ball pin linkage The assembly includes a connecting rod body 1 and two ball pin assemblies 2 respectively arranged at the upper and lower ends of the connecting rod body 1, and ball pins for connecting with the ball pin assemblies 2 are provided on the two counterparts The connection structure 41; the two ball pin assemblies 2 all include a ball pin member 21, and the ball pin member 21 includes a ball body 211, a flange 212 and a screw rod 213, and the ball body 211 and the screw rod 213 are respectively arranged On the left and right sides of the flange 212, the side of the flange 212 facing the screw 213 is the flange surface 2121 on the counterpart side, and the flange surface 2121 on the counterpart side is provided with extrusion protrusions. platform 2122; the screw 213 passes through the connection hole of the ball pin connection structure 41, when the nut 3 is threadedly connected with the screw 213 and the nut 3 is tightened, the extruding boss 2122 acts on the The ball pin connection structure 41 deforms the ball pin connection structure 41 and forms a groove for accommodating the extrusion boss 2122 . In this embodiment, the extruded boss 2122 is heat-treated, and its strength is greater than that of the ball-pin connection structure 41 .

The extruded boss 2122 and the flange 212 are integrated, and the ball pin member 21 is heat-treated as a whole during processing to improve the strength of the ball pin member 21. As the extruded boss 2122 is a part of the ball pin member 21, its strength is Therefore, during the process of installing the ball pin connecting rod assembly in the vehicle assembly, after the screw rod 213 passes through the connection hole of the ball pin connection structure 41 of the counterpart, the nut 3 is installed and torque is applied to the nut 3, so that The nut 3 is tightened. In the process of tightening the nut 3, because the nut 3 and the screw rod 213 form a thread pair, the screw rod 213 drives the ball pin member 21 to move axially as a whole, and the extrusion boss 2122 is in contact with the ball pin connection structure 41 Then continue to tighten the nut 3, the ball pin member 21 continues to move axially as a whole, and the extruding boss 2122 acts on the ball pin connection structure 41 to deform the ball pin connection structure 41 and form an extrusion boss 2122 for accommodating the extruding boss 2122. The groove, the extrusion boss 2122 fits with the groove, can overcome the torque that the thread pair drives the ball pin member 21 to rotate, thereby preventing the ball pin member 21 from rotating, and ensuring that the nut 3 can be tightened to a set tightening torque. Moreover, the installation structure does not need to change the structure of the counterpart, and the assembly is simple and efficient.

In this embodiment, there are multiple extruding bosses 2122, and a plurality of extruding bosses 2122 are arranged at intervals along the circumferential direction on the flange surface 2121 on the side of the counterpart. The length direction of the boss 2122 is along the radial direction of the flange 212 . The number of extruding bosses 2122 may be four, or three, five or six. Preferably, a plurality of extruding bosses 2122 are arranged at equal intervals in the circumferential direction. The length directions of the plurality of extrusion bosses 2122 are all along the radial direction of the flange 212 and perpendicular to the rotation direction of the flange 212 , which can further improve the anti-rotation effect.

In this embodiment, the width of the plurality of extrusion bosses 2122 is not greater than 1/10 of the diameter of the flange 212, reducing the area of the contact surface between the extrusion bosses 2122 and the ball pin connection structure 41, The extruding boss 2122 can more easily compress the ball-pin connection structure 41 to deform.

In this embodiment, the two ball pin assemblies 2 also include a steel sleeve 22 and a ball pin seat 23, the steel sleeve 22 is connected with the connecting rod body 1, and the ball pin seat 23 is embedded in the Inside the steel sleeve 22 , a ball head installation cavity for connecting with the ball head body 211 is provided inside the ball pin seat 23 . The ball pin seat 23 and the ball head member form a ball hinge pair, and the connecting rod body 1, the steel sleeve 22 and the ball pin seat 23 are respectively processed and connected together, and the separate processing can reduce the manufacturing cost.

In this embodiment, the two ball pin assemblies 2 also include a dustproof cover 24, and a journal 214 is provided on the side of the ball body 211 facing the flange 212, and the journal 214 is connected to the flange 212. A right ring groove is formed between the flanges 212 , the steel sleeve 22 is provided with a left ring groove, and the left and right parts of the dustproof cover 24 are respectively connected to the left ring groove and the right ring groove through a snap spring 25 . The dust cover 24 can prevent dust from entering the ball joint pair.

In this embodiment, the central axis of the connecting rod body 1 is along the vertical direction, and the central axis of the ball pin member 21, the central axis of the steel sleeve 22 and the central axis of the ball pin seat 23 are all along the left and right direction. .

In this embodiment, the end of the screw 213 away from the flange 212 is provided with a disassembly anti-rotation groove 2131, which is an inner hexagonal groove. In the case of disassembly, the hexagon disassembly tool can be inserted into the inner hexagon groove, and then the nut 3 can be turned to realize disassembly, preventing the ball pin member 21 from rotating during the disassembly process.

In this embodiment, one of the counterparts is a stabilizer bar 4a, and the other counterpart is a shock absorber 4b; in this embodiment, the ball-pin connection structure 41 of the stabilizer bar 4a is an end sleeve , the ball pin connection structure 41 of the shock absorber 4b is a connection bracket. The strength of the ball pin connection structure 41 of the stabilizer bar 4 a and the shock absorber 4 b is lower than the strength of the extrusion boss 2122 .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. The utility model provides a mounting structure of ball round pin connecting rod assembly, includes ball round pin connecting rod assembly, two opponent's spare and two nuts (3), ball round pin connecting rod assembly includes connecting rod body (1) and sets up respectively two ball round pin subassemblies (2) at the upper and lower both ends of connecting rod body (1), two all be provided with on the opponent's spare be used for with ball round pin connection structure (41) that ball round pin subassembly (2) are connected, its characterized in that: the two ball pin assemblies (2) respectively comprise ball pin members (21), each ball pin member (21) comprises a ball head body (211), a flange plate (212) and a screw (213), the ball head bodies (211) and the screws (213) are respectively arranged on the left side and the right side of the flange plate (212), one surface, facing the screws (213), of the flange plate (212) is a counterpart side flange surface (2121), and an extrusion boss (2122) is arranged on the counterpart side flange surface (2121); the screw rod (213) passes through the connection via hole of the ball pin connecting structure (41), and when the nut (3) is in threaded connection with the screw rod (213) and is screwed down on the nut (3), the extrusion boss (2122) acts on the ball pin connecting structure (41), so that the ball pin connecting structure (41) deforms and forms a groove for accommodating the extrusion boss (2122).

2. The mounting structure of a ball pin link assembly according to claim 1, characterized in that: the extrusion boss (2122) is heat treated to have a strength greater than the strength of the ball and pin connection structure (41).

3. The mounting structure of a ball pin link assembly according to claim 1, wherein: the number of the extrusion bosses (2122) is plural, the extrusion bosses (2122) are circumferentially arranged on the counter-element-side flange surface (2121) at intervals, and the length directions of the extrusion bosses (2122) are all along the radial direction of the flange plate (212).

4. The mounting structure of a ball pin link assembly according to claim 3, wherein: the width of the plurality of crush lobes (2122) is no greater than 1/10 of the diameter of the flange (212).

5. The mounting structure of a ball pin link assembly according to claim 1, characterized in that: two ball round pin subassembly (2) all still include steel bushing (22) and ball key seat (23), steel bushing (22) with connecting rod body (1) is connected, ball key seat (23) embedded in steel bushing (22), the inside of ball key seat (23) be provided with be used for with the bulb installation cavity that bulb body (211) is connected.

6. The mounting structure of a ball pin link assembly according to claim 5, characterized in that: two ball round pin subassembly (2) all still include dirt proof boot (24), the orientation of ball head body (211) one side of ring flange (212) is provided with axle journal (214), form right annular between axle journal (214) and ring flange (212), be provided with left annular on steel bushing (22), about dirt proof boot (24) two parts respectively through jump ring (25) with left annular and right annular are connected.

7. The mounting structure of a ball pin link assembly according to claim 5, characterized in that: the central axis of the connecting rod body (1) is along the vertical direction, and the central axis of the ball pin member (21), the central axis of the steel sleeve (22) and the central axis of the ball pin seat (23) are along the left-right direction.

8. The mounting structure of a ball pin link assembly according to claim 1, wherein: and one end of the screw rod (213) far away from the flange plate (212) is provided with a disassembly rotation prevention groove (2131).

9. The mounting structure of a ball pin link assembly according to claim 1, wherein: one of the opponent parts is a stabilizer bar (4 a), and the other opponent part is a shock absorber (4 b).

10. The mounting structure of a ball pin link assembly according to claim 9, wherein: the ball pin connecting structure (41) of the stabilizer bar (4 a) is an end sleeve, and the ball pin connecting structure (41) of the shock absorber (4 b) is a connecting support.

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