CN214028831U

CN214028831U - Swing arm ball round pin and swing arm assembly

Info

Publication number: CN214028831U
Application number: CN202120059496.5U
Authority: CN
Inventors: 陈培; 晋兆勇; 田巍; 庹顺森
Original assignee: Huachen Xinyuan Chongqing Automobile Co Ltd
Current assignee: Huachen Xinyuan Chongqing Automobile Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-08-24
Anticipated expiration: 2031-01-11

Abstract

The utility model discloses a swing arm ball round pin and swing arm assembly, swing arm ball round pin includes that bulb seat and sphere articulate the round pin axle on the bulb seat, sells epaxial mounting groove for connect the knuckle, the mounting groove sets up the arc wall for selling the axial circumference surface at the axle, the mounting groove sets up and its radian is 30~60 along selling the axial circumferencial direction. The swing arm assembly comprises the swing arm ball pin, a swing arm body, a front bushing and a rear bushing, wherein the swing arm body is provided with three support lugs, and the ball head seat, the front bushing and the rear bushing are respectively fixed at the top ends of the three support lugs of the swing arm body. The swing arm ball pin is high in strength, convenient to assemble with a steering knuckle and beneficial to improving the assembly efficiency.

Description

Swing arm ball round pin and swing arm assembly

Technical Field

The utility model belongs to the technical field of auto-parts, in particular to swing arm ball round pin and swing arm assembly.

Background

When the automobile runs, the steering transmission mechanism not only transmits steering force, but also bears the impact and vibration of the steering wheel caused by running on uneven roads. Therefore, a vibration absorption and buffering device is arranged in the steering mechanism, and the gap generated after abrasion can be automatically eliminated. Because the steering transmission mechanism is a space motion rod system arranged between the axle and the vehicle body, the relative motion of the steering swing arm and the steering knuckle arm is not in the same plane, and the spherical hinge connection is adopted for the connection between the steering swing arm and the steering knuckle arm in order to avoid the motion interference.

At present, a steering swing arm and a steering knuckle arm are connected through a swing arm ball pin, a mounting groove for mounting a steering knuckle at present mainly has two structures, one structure is that an annular mounting groove with 360 degrees is processed on the circumferential surface of a swing arm ball pin shaft, so that the cross section area of the mounting groove is greatly reduced, stress concentration is caused, and the ball pin is easy to break at the mounting groove; the other kind is the straight line shape mounting groove of seting up at the axis tangential direction of swing arm ball round pin axle, though mounting groove intensity is better than first kind like this, but the required precision to the mounting groove is high, otherwise the mounting hole and the mounting groove of knuckle are difficult to adjusting well at the installation knuckle to even the precision of mounting groove is high, if the mounting hole and the mounting groove of knuckle do not adjust well in the assembling process, then need rotate swing arm ball round pin and just can assemble after adjusting well with the mounting groove of knuckle, make assembly efficiency not high.

Disclosure of Invention

The aforesaid is not enough to prior art exists, the utility model aims at providing a swing arm ball round pin and swing arm assembly, this swing arm ball round pin's intensity is high, simultaneously with knuckle convenient assembling, is favorable to improving assembly efficiency.

The technical scheme of the utility model is realized like this:

the utility model provides a swing arm ball round pin, includes that bulb seat and sphere articulate the round pin axle on the bulb seat, sell epaxial mounting groove for connect the knuckle, the mounting groove sets up the arc wall for selling the axial circumference surface at the round pin, the mounting groove sets up and its radian is 30~60 along selling the axial circumferencial direction.

Furthermore, a ball head is arranged at one end of the pin shaft, a spherical cavity for accommodating the ball head is arranged on the ball head seat, and the ball head is placed in the spherical cavity and is hinged with the ball head seat, so that the pin shaft can rotate in the spherical cavity.

Furthermore, the pin shaft is further sleeved with a dust cover, the dust cover is arranged below the mounting groove, the upper end of the dust cover is fixed with the pin shaft in a sealing mode, the lower end of the dust cover is fixed with the ball head seat in a sealing mode, and dust is prevented from entering a spherical cavity of the ball head seat.

A swing arm assembly comprises the swing arm ball pin, a swing arm body, a front bushing and a rear bushing,

furthermore, the swing arm body is provided with three support lugs, and the ball seat, the front bushing and the rear bushing are respectively fixed at the top ends of the three support lugs of the swing arm body.

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

swing arm ball round pin, for current 360 annular mounting grooves at round pin axle circumference surface machining, the radian of the mounting groove of the utility model is less, has increased the cross sectional area of round pin axle, has strengthened the intensity of round pin axle. Simultaneously because of there is certain radian in the mounting groove, for the sharp mounting groove that appears in the axis tangential direction of swing arm ball round pin axle, increased assembly tolerance, when adopting the holding bolt to install the knuckle, even the round pin axle rotates the mounting hole and the mounting groove of back knuckle and incompletely adjust well, as long as in the assembly range, the holding bolt also can pass a mounting hole of knuckle, another mounting hole of mounting groove and knuckle fast and be connected with the round pin axle, be favorable to improving assembly efficiency.

Drawings

Fig. 1-the structure of the present invention.

Fig. 2-structural schematic diagram of the swing arm assembly.

Wherein: 1-swing arm ball pin; 11-a ball cup seat; 12-a pin shaft; 13-mounting grooves; 2-a swing arm body; 3-front lining; 4-rear bushing.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, a swing arm ball pin 1 includes a ball cup 11 and a pin 12 spherically hinged on the ball cup 11, the pin 12 is provided with a mounting groove 13 for connecting a knuckle, the mounting groove 13 is an arc groove arranged on the circumferential surface of the pin 12, and the mounting groove 13 is arranged along the circumferential direction of the pin 12 and has a radian of 30-60 degrees.

Here, the mounting groove is 30~60 arc mounting grooves at round pin axle circumference surface machining, for current 360 annular mounting grooves at round pin axle circumference surface machining, the radian of the mounting groove of the utility model is less, has increased the cross sectional area of round pin axle, has strengthened the intensity of round pin axle. Simultaneously because of there is certain radian in the mounting groove, for the sharp mounting groove that appears in the axis tangential direction of swing arm ball round pin axle, increased assembly tolerance, when adopting the holding bolt to install the knuckle, even the round pin axle rotates the mounting hole and the mounting groove of back knuckle and incompletely adjust well, as long as in the assembly range, the holding bolt also can pass a mounting hole of knuckle, another mounting hole of mounting groove and knuckle fast and be connected with the round pin axle, be favorable to improving assembly efficiency.

When the mounting groove is formed, the diameter of the mounting groove is determined according to the specification of the holding bolt, so that the assembling effect of the steering knuckle and the pin shaft is ensured.

During specific implementation, one end of the pin shaft 12 is provided with a ball head, the ball head seat 11 is provided with a spherical cavity for accommodating the ball head, and the ball head is placed in the spherical cavity and is hinged with the ball head seat 11, so that the pin shaft 12 can rotate in the spherical cavity.

Therefore, the pin shaft and the ball head seat are in hinged connection through the ball head, and the pin shaft can rotate on the ball head seat in any direction, so that the steering swing arm and the steering knuckle are prevented from moving and interfering in the relative movement in different planes.

In specific implementation, the pin 12 is further sleeved with a dust cover (not shown), the dust cover is disposed below the mounting groove 13, the upper end of the dust cover is hermetically fixed to the pin 12, and the lower end of the dust cover is hermetically fixed to the ball seat 11, so that dust is prevented from entering the spherical cavity of the ball seat 11.

Therefore, the dust cover cannot influence the connection between the steering knuckle and the pin shaft, and dust cannot enter the spherical cavity of the ball head seat from the connecting gap between the pin shaft and the ball head seat, so that the abrasion of the spherical hinged part of the ball head and the ball head seat is avoided. In addition, the joint of the spherical seat and the ball head is also coated with lubricating grease, and the dust cover is arranged in such a way, so that the lubricating grease can be prevented from leaking. In this embodiment, the dust cover is made of rubber.

Referring to fig. 2, a swing arm assembly includes the swing arm ball pin 1, a swing arm body 2, a front bushing 3 and a rear bushing 4, the swing arm body 2 has three lugs, and a ball seat 11, the front bushing 3 and the rear bushing 4 are respectively fixed on the tops of the three lugs of the swing arm body 2.

Like this, swing arm ball round pin, preceding bush and back bush set up respectively on three angles of swing arm body, can effectively guarantee the structural stability of swing arm assembly. The swing arm ball pin is connected with the steering knuckle, and the front bushing and the rear bushing are respectively connected with the frame.

Finally, it should be noted that the above-mentioned embodiments of the present invention are only examples for illustrating the present invention, and are not limitations to the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.

Claims

1. The utility model provides a swing arm ball round pin, includes that bulb seat and sphere articulate the round pin axle on the bulb seat, sell epaxial mounting groove for connect the knuckle, its characterized in that, the mounting groove sets up the arc wall for selling the axial circumference surface at the round pin, the mounting groove sets up and its radian is 30~60 along selling the axial circumferencial direction.

2. The swing arm ball pin of claim 1, wherein the pin shaft has a ball head at one end, and the ball head seat has a spherical cavity for accommodating the ball head, and the ball head is disposed in the spherical cavity and is hinged to the ball head seat, so that the pin shaft can rotate in the spherical cavity.

3. The swing arm ball pin according to claim 2, wherein the pin is further sleeved with a dust cover, the dust cover is arranged below the mounting groove, the upper end of the dust cover is fixed with the pin in a sealing manner, and the lower end of the dust cover is fixed with the ball socket in a sealing manner, so that dust is prevented from entering the spherical cavity of the ball socket.

4. A swing arm assembly comprises a swing arm ball pin, a swing arm body, a front bushing and a rear bushing, and is characterized in that the swing arm ball pin is the swing arm ball pin according to claims 1-3.

5. The swing arm assembly of claim 4 wherein the swing arm body has three lugs, and the ball cup, the front bushing and the rear bushing are respectively fixed to the tips of the three lugs of the swing arm body.