CN211808884U

CN211808884U - Control arm assembly

Info

Publication number: CN211808884U
Application number: CN202020174572.2U
Authority: CN
Inventors: 张金星
Original assignee: Zhejiang Lizhong Automobile Chassis Parts Co ltd
Current assignee: Zhejiang Lizhong Automobile Chassis Parts Co ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-10-30
Anticipated expiration: 2030-02-17

Abstract

The utility model provides a control arm assembly belongs to auto-parts technical field. It has solved the current poor scheduling problem of control arm anti load impact ability. This control arm assembly includes the arm body, the bulb round pin, arm body one end has linked firmly the bush, the other end of the arm body is crooked and forms the ball seat, the ball seat top has the flange, ball seat bottom riveted joint has the bottom plate, support the elastic component on the bottom plate, the elastic component supports there is the ball bowl, when the ball seat level, the bulb round pin is placed perpendicularly, the bush is higher than the ball seat setting and the angle between arm body and the ball seat is 155-165, the connecting seat has between arm body middle part and the ball seat, the connecting seat is equipped with the perforating hole, the bolster has been linked firmly in the perforating hole, it is positive opposite angle to place to add the ball seat bottom from the equal level of arm body and bulb round pin, the perforating hole link up the axis of arm body two sides and perforating hole. The utility model has the advantages of low cost, good load impact resistance and the like.

Description

Control arm assembly

Technical Field

The utility model belongs to the technical field of auto-parts, a auto-suspension accessory is related to, in particular to control arm assembly.

Background

The automobile control arm is used as a guide and force transmission element of an automobile suspension system, various forces acting on a wheel are transmitted to an automobile body, the wheel is ensured to move according to a certain track, the wheel and the automobile body are respectively and elastically connected together through a spherical hinge or a bush by the existing automobile control arm, and the automobile control arm (comprising the bush and a ball head connected with the automobile control arm) has enough rigidity, strength and service life.

For example, the applicant has designed an automotive control arm and applied for a patent [ application No.: 201821255709.6, respectively; authorization notice number: CN208602254U ], it includes the arm body, the ball seat is worn to be equipped with in the upper end of the arm body and the arm body upper end has the turn-ups of interference fit with the ball seat outer wall, be equipped with the ball round pin in the ball seat, be equipped with the dust cover between ball round pin and the ball seat, be equipped with the protective sheath that covers in the dust cover outside between ball round pin and the turn-ups, the lower extreme of the arm body links firmly the outer bush that is tube-shape and axis perpendicular to arm body setting, the outer bush vulcanizes and has linked firmly the rubber sleeve, the rubber sleeve vulcanizes and has linked firmly the neck bush that is the tube-shape, the rubber sleeve is equipped with the buffer chamber that two symmetries set up and the axial runs through in the rubber sleeve axis, the rubber sleeve both ends all have the recess that is located buffer chamber both sides and symmetry in the buffer chamber setting, the outer wall of neck bush has the bead of two radial protrusions and axial extensions, two beads symmetry in the neck bush axis.

The bush of foretell vehicle control arm one end has better shock-absorbing capacity, the ball seat is difficult for coming off from the turn-ups, it is good to use the security, in order to improve arm body firm in connection nature, the outside of arm body buckling department has convex connecting portion, connecting portion have linked firmly buffer bush, buffer bush's axis is on a parallel with the arm body setting, but the ball seat, the setting of anti-disengaging structure (lock collar, retaining ring), make the structure complicated, manufacturing cost is also higher, connecting portion are located the arm body outside, bearing capacity and anti-load impact are not ideal enough.

Disclosure of Invention

The utility model aims at providing a low in manufacturing cost, bearing capacity are good, anti load impact ability is good control arm assembly to the above-mentioned problem that exists among the prior art.

The purpose of the utility model can be realized by the following technical proposal: a control arm assembly comprises an arm body and a ball head pin, wherein the ball head pin is provided with a ball head part and a rod part, one end of the arm body is fixedly connected with a bushing, the control arm assembly is characterized in that the other end of the arm body is bent to form a ball seat for mounting the ball head part, the top end of the ball seat is provided with a circle of flange which protrudes inwards and the inner wall of which is an arc-shaped surface, the bottom end of the ball seat is riveted with a bottom plate, an elastic piece is supported on the bottom plate, the elastic piece supports a ball bowl which is abutted against the ball head part, the elastic piece provides elastic force to enable the ball bowl to be always abutted against the ball head part and the ball head part to be always abutted against the arc-shaped surface of the flange, when the ball seat is horizontally and vertically placed, the bushing is higher than the ball seat, the angle between the arm body and the ball seat is 155-165 degrees, an outward-expanding connecting seat is arranged between the middle part of the, the connecting seat is provided with a through hole which is obliquely arranged, a buffer piece is fixedly connected in the through hole, the axis of the buffer piece and the axis of the through hole are coaxially arranged, the through hole penetrates through the upper surface and the lower surface of the arm body, the included angle between the axis of the through hole and the vertical surface is 20-30 degrees from the angle that the arm body and the ball head pin are horizontally arranged and the bottom of the ball seat is opposite, and the top orifice of the through hole is closer to the ball seat than the bottom orifice of the through hole.

In the control arm assembly, from the angle that the arm body and the ball pin are horizontally arranged and the bottom of the ball seat is opposite, the end part of the arm body fixedly connected with the bushing is bent downwards so that the included angle between the axis of the bushing and the vertical plane is 8-15 degrees, and the bottom end of the bushing is closer to the ball seat than the top end of the bushing.

In the control arm assembly, the inner wall of the through hole is provided with a circle of convex ring protruding radially outwards, the buffer part is a cylindrical rubber part, and the outer wall of the buffer part is provided with a circle of annular groove embedded with the convex ring.

In the above control arm assembly, the through hole has expanding holes at its two end openings, and the buffer member has expanding holes at its two end openings.

In the control arm assembly, the elastic member is a disc spring, the base plate is in threaded connection with the oil nipple, and the inner end of the oil nipple penetrates through the base plate. The elasticity of dish spring is good and make compact structure, after the ball appears wearing and tearing when the ball, the elasticity of dish spring makes the ball contradict in bulb portion all the time, play wearing and tearing clearance compensation effect, avoid the problem production of the spacious abnormal sound of pine, the dish spring also plays buffering damping effect, make the anti load impact ability of bulb round pin good, the setting of glib talker is convenient for the interpolation of lubricating grease, make bulb portion and ball, lubricity between the flange is good, reducing wear, and long service life.

In foretell control arm assembly, flange and ball bowl between reserve and have lubricating cavity, the bulb portion have two rings of symmetries and set up and all walk around the lubrication groove that bulb portion topside and base set up, the outer wall of ball seat the spacing groove has, the lower extreme of a dust cover inlays in the spacing groove through the clamp, the upper end of dust cover supplies pole portion to wear out and the position that pole portion supplied the dust cover upper end to contradict is the toper section, the outer wall of toper section be that the tip that toper face and toper section diameter are big is close to in the bulb portion setting. The lubricating oil cavity is used for containing lubricating grease, and the lubricating grease can conveniently circulate through the lubricating oil groove, so that the ball head part has good lubricity, small abrasion and long service life; the dust cover prevents dust and impurities from entering the ball head part, avoids abrasion and prolongs the service life.

In the control arm assembly, the bushing comprises an outer liner tube and an inner liner tube, the rubber layer is fixedly connected between the outer liner tube and the inner liner tube in a vulcanization mode, the axial length of the outer liner tube is smaller than that of the rubber layer, the outer liner tube is embedded into the outer wall of the rubber layer, the bottom end of the outer liner tube is provided with a flange which is turned outwards, the length of the inner liner tube is larger than that of the rubber layer, and two ends of the rubber layer are provided with covered edges which are covered at two ends of the inner liner tube.

In the above control arm assembly, the bottom surfaces of the two ends of the arm body are inclined and transition to the bottom of the connecting seat. The transition is smooth, the arm body structure is stable, and stress concentration is not easy to form.

Compared with the prior art, the control arm assembly has the advantages of low manufacturing cost, high structural strength, good bearing capacity and load impact resistance, no stress concentration phenomenon and long service life.

Drawings

Fig. 1 is a schematic structural diagram of the control arm assembly.

FIG. 2 is a cross-sectional view of the structure of the present control arm assembly at the ball stud location.

FIG. 3 is a schematic view of another angle of the present control arm assembly.

In the figure, 1, an arm body; 2. a ball head portion; 3. a rod portion; 4. a ball seat; 5. blocking edges; 6. a base plate; 7. an elastic member; 8. a ball bowl; 9. a connecting seat; 10. a buffer member; 11. a convex ring; 12. expanding the mouth; 13. a nozzle tip; 14. a lubricating oil cavity; 15. a lubricating oil groove; 16. a dust cover; 17. a tapered section; 18. an outer liner tube; 19. a liner tube; 20. a rubber layer; 21. flanging; 22. and (6) edge covering.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the control arm assembly comprises an arm body 1 and a ball stud, wherein the ball stud is provided with a ball head part 2 and a rod part 3, one end of the arm body 1 is fixedly connected with a bushing, the other end of the arm body 1 is bent to form a ball seat 4 for mounting the ball head part 2, the top end of the ball seat 4 is provided with a circle of flange 5 which protrudes inwards and the inner wall of which is an arc surface, the bottom end of the ball seat 4 is riveted with a bottom plate 6, an elastic part 7 is supported on the bottom plate 6, the elastic part 7 supports a ball bowl 8 which props against the ball head part 2, the elastic part 7 provides elasticity to enable the ball bowl 8 to always prop against the ball head part 2 and the ball head part 2 to always prop against the arc surface of the flange 5, when the ball seat 4 is horizontally placed and the ball stud is vertically placed, the bushing is higher than the ball seat 4, an angle a between the arm body 1 and the ball seat 4, have the connecting seat 9 that expands outward between 1 middle part of arm body and the ball seat 4, the thickness of connecting seat 9 is thickest than other positions of arm body 1, the bottom surface of 1 both ends of arm body is the slope transition to the bottom of connecting seat 9 all respectively, connecting seat 9 is equipped with the perforating hole that the slope set up, linked firmly bolster 10 in the perforating hole, the axis of bolster 10 and the axis coaxial setting of perforating hole, from the equal level placement of arm body 1 and bulb round pin and add the ball seat 4 bottom for just opposite angle, the perforating hole link up about 1 two sides of arm body and the axis of perforating hole and the contained angle b of perpendicular are 20-30, the axis of perforating hole is 23 with the contained angle b of perpendicular in this embodiment, the top drill way of perforating hole is closer to ball seat 4 than its bottom drill way and sets.

The control arm assembly directly forms the ball seat 4 at the end part of the arm body 1, so that the prior flanging 21, the external ball seat 4, the locking ring and the check ring are omitted, the manufacturing difficulty is reduced, the material is saved, and the manufacturing cost is low; through finite element analysis, the position stress that the arm body 1 corresponds to connecting seat 9 is the biggest, structural strength has been strengthened to connecting seat 9, bolster 10 plays buffering damping effect, the bearing capacity and the anti load impact capacity of arm body 1 have been improved, angle between arm body 1 and the ball seat 4 and the angle setting of perforating hole, make ball seat 4, bolster 10 department atress is balanced, and make the load of ball seat 4 and buffer 10 two departments can not form the impact load of equidirectional, the anti load impact capacity has been improved, avoid stress concentration, and service life is prolonged.

In a further elaboration, from the angle that the bottom of the ball seat 4 is just opposite when the arm body 1 and the ball stud are horizontally placed, the end part of the arm body 1 fixedly connected with the bushing is bent downwards so that the included angle c between the axis of the bushing and the vertical surface is 8-15 degrees, the included angle c between the axis of the bushing and the vertical surface is 10 degrees in the embodiment, the bottom end of the bushing is closer to the ball seat 4 than the top end of the bushing, the stress at the bushing is balanced, the load on the bushing is different from the load directions of the buffer 10 and the ball stud, the load is prevented from forming impact load in the same direction, and the load resistance is improved.

The inner wall of perforating hole has the protruding circle 11 of the radial evagination of round, and the outer wall of bolster 10 for the rubber spare that is the tube-shape and bolster 10 has the ring channel of the protruding circle 11 embedding of round cooperation, and bolster 10 is the rubber spare, and is with low costs, has fine elasticity moreover, and buffering damping is effectual, and bolster 10 takes place deformation after receiving the extrusion during installation, can swiftly install in the perforating hole. The hole openings at the two ends of the through hole are provided with expanding holes 12 which expand outwards, the hole openings at the two ends of the buffer piece 10 are both reamed, the arrangement of the expanding holes 12 facilitates the smooth installation of the buffer piece 10 into the through hole, and the reamed holes play a guiding role and facilitate the connection rod to pass through the buffer piece 10.

For compact structure, good lubricity and long service life, elastic component 7 is the dish spring, bottom plate 6 threaded connection has glib talker 13, the inner of glib 13 passes bottom plate 6 and sets up, reserve between flange 5 and the ball bowl 8 and have lubricating oil cavity 14, bulb portion 2 has two rings of symmetry settings and all walks around the lubricating oil groove 15 that 2 topside of bulb portion and base set up, the outer wall of ball seat 4 has the spacing groove, the lower extreme of a dust cover 16 inlays in the spacing groove through the clamp, the upper end of dust cover 16 supplies pole portion 3 to wear out and the position that pole portion 3 supplies the dust cover 16 upper end to contradict is conical segment 17, the outer wall of conical segment 17 is that the tip that conical surface and conical segment 17 diameter are big is close to in bulb portion 2 and sets up.

The bush includes outer liner pipe 18, interior bushing pipe 19, vulcanize between outer liner pipe 18 and the interior bushing pipe 19 and have linked firmly rubber layer 20, the axial length of outer liner pipe 18 is less than the axial length of rubber layer 20 and the outer wall setting of outer liner pipe 18 embedding rubber layer 20, the bottom of outer liner pipe 18 has the turn-ups 21 of turning over outward, the length of interior bushing pipe 19 is greater than the axial length of rubber layer 20 and the both ends of rubber layer 20 all have the bordure 22 of cladding in interior bushing pipe 19 both ends, outer liner pipe 18 embedding rubber layer 20 sets up, both combine firmly, turn-ups 21 avoid the bush to break away from, bordure 22 has increased the joint strength of rubber layer 20 and interior bushing pipe 19, the bush structure is firm like this, the operation is stable, when bearing load, rubber layer 20 is difficult to.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A control arm assembly comprises an arm body (1) and a ball head pin, wherein the ball head pin is provided with a ball head part (2) and a rod part (3), one end of the arm body (1) is fixedly connected with a bushing, the control arm is characterized in that the other end of the arm body (1) is bent to form a ball seat (4) for mounting the ball head part (2), the top end of the ball seat (4) is provided with a circle of flange (5) which protrudes inwards and the inner wall of which is an arc-shaped surface, the bottom end of the ball seat (4) is riveted with a bottom plate (6), the bottom plate (6) is provided with an elastic part (7), the elastic part (7) is supported with a ball bowl (8) which is abutted against the ball head part (2), the elastic part (7) provides elasticity to enable the ball bowl (8) to be always abutted against the ball head part (2) and enable the ball head part (2) to be always abutted against the arc-shaped surface of the flange (, When the ball stud is vertically placed, the bushing is higher than the ball seat (4) and the angle a between the arm body (1) and the ball seat (4) is 155-165 degrees, an outward-expanding connecting seat (9) is arranged between the middle part of the arm body (1) and the ball seat (4), the thickness of the connecting seat (9) is thicker than the rest parts of the arm body (1), the connecting seat (9) is provided with a through hole which is obliquely arranged, the through hole is fixedly connected with a buffer piece (10), the axis of the buffer piece (10) is coaxial with the axis of the through hole, and from the angle that the arm body (1) and the ball pin are both horizontally placed and the bottom of the ball seat (4) is right opposite, the through hole penetrates through the upper surface and the lower surface of the arm body (1), the included angle b between the axis of the through hole and the vertical surface is 20-30 degrees, the top hole of the through hole is closer to the ball seat (4) than the bottom hole of the through hole.

2. A control arm assembly according to claim 1, characterised in that the end of the arm (1) to which the bush is attached is bent downwards so that the axis of the bush makes an angle c of 8 ° to 15 ° with the vertical, the bottom end of the bush being located closer to the ball socket (4) than the top end, from the point where the arm (1) and the ball stud are both horizontally positioned and the bottom of the ball socket (4) is directly opposite.

3. A control arm assembly according to claim 2, wherein the inner wall of said through hole has a radially protruding collar (11), said damping member (10) is a tubular rubber member and the outer wall of said damping member (10) has an annular groove into which said collar (11) is fitted.

4. A control arm assembly according to claim 3, wherein said through hole has flared openings (12) at both ends, and said buffer member (10) has both ends flared.

5. A control arm assembly according to claim 1 or 2 or 3 or 4, characterized in that said resilient member (7) is a disc spring, said base plate (6) is threadedly connected with a nipple (13), and the inner end of said nipple (13) is disposed through said base plate (6).

6. The control arm assembly as claimed in claim 5, wherein a lubricating oil cavity (14) is reserved between the flange (5) and the ball bowl (8), the ball head (2) has two circles of lubricating oil grooves (15) which are symmetrically arranged and all bypass the top edge and the bottom edge of the ball head (2), the outer wall of the ball seat (4) is provided with a limiting groove, the lower end of a dust cover (16) is embedded in the limiting groove through a clamp, the upper end of the dust cover (16) is used for the rod portion (3) to penetrate out, the part of the rod portion (3) for the upper end of the dust cover (16) to abut against is a conical section (17), and the outer wall of the conical section (17) is a conical surface and the end of the conical section (17) with the large diameter is close to the ball head (2).

7. A control arm assembly according to claim 1, 2, 3 or 4, characterized in that the bushing comprises an outer liner tube (18) and an inner liner tube (19), a rubber layer (20) is vulcanized and fixedly connected between the outer liner tube (18) and the inner liner tube (19), the axial length of the outer liner tube (18) is smaller than that of the rubber layer (20), the outer liner tube (18) is embedded in the outer wall of the rubber layer (20), the bottom end of the outer liner tube (18) is provided with a flanging (21) which is turned outwards, the length of the inner liner tube (19) is larger than that of the rubber layer (20), and two ends of the rubber layer (20) are respectively provided with a flanging (22) which is coated on two ends of the inner liner tube (19).

8. A control arm assembly according to claim 1 or 2, wherein the bottom surfaces of the two ends of the arm body (1) are inclined to transition to the bottom of the connecting base (9).