Lower swing arm of front suspension

Abstract

A lower swing arm of a front suspension comprises a body, a ball pin and a dust cover, a ball seat is arranged on the body, the lower end of the ball pin is connected to the ball seat, an opening in the lower end of the dust cover is matched with the outer wall of the ball seat in a clamped mode, and an opening in the upper end of the dust cover is matched with the outer wall of the upper end of the ball pin in a clamped mode. A first annular containing cavity extending in the circumferential direction is formed in the cover wall of the lower end of the dust cover, a first annular framework is arranged in the first annular containing cavity, a second annular containing cavity extending in the circumferential direction is formed in the cover wall of the upper end of the dust cover, and a second annular framework is arranged in the second annular containing cavity. After the structure is adopted, compared with the prior art, the dustproof cover has the beneficial effects that the first annular framework and the second annular framework are prevented from being directly exposed, attenuation is delayed, the service life of the dustproof cover is prolonged, and the dustproof cover is connected with the ball seat more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a lower swing arm of an automobile front suspension. Background Art

[0002] The lower arm, also known as the lower control arm, is a very important component of the automobile suspension. The lower arm is provided with a ball seat connected to a ball pin. The connection between the ball pin and the lower arm body is dustproofed by a dust cover made of a flexible material. In order to make the dust cover seal better, the existing technology is to set a retaining spring on the outer periphery of the ball seat of the lower arm body after the dust cover is set. However, the long-term exposure of the retaining spring is likely to accelerate its rust and aging, thereby causing the connection between the dust cover and the ball seat to loosen, affecting the use of the product. Utility Model Content

[0003] In view of the above problems, the utility model provides a front suspension lower arm with a dust cover and a ball seat connected more stably.

[0004] The technical solution used by the utility model to solve the above problems is: a front suspension lower arm, including a body, a ball pin and a dust cover, the body is provided with a ball seat, the lower end of the ball pin is connected to the ball seat, the dust cover is provided on the ball pin and the ball seat, and the upper end of the ball pin extends out of the dust cover; the dust cover has openings at both ends, the lower end opening of the dust cover is snap-fitted with the outer wall of the ball seat, and the upper end opening of the dust cover is snap-fitted with the outer wall of the upper end of the ball pin, a first annular receiving cavity extending in a circumferential direction is provided in the cover wall at the lower end of the dust cover, a first annular frame is provided in the first annular receiving cavity, a second annular receiving cavity extending in a circumferential direction is provided in the cover wall at the upper end of the dust cover, and a second annular frame is provided in the second annular receiving cavity.

[0005] The dust cover of the front suspension lower arm of the utility model is fixed to the ball seat and the ball pin by the first annular frame and the second annular frame arranged inside the dust cover, thereby increasing the sealing of the connection. Compared with the prior art, the above structure is advantageous in that it avoids direct exposure of the first annular frame and the second annular frame to the outside, delays attenuation, prolongs the service life of the dust cover, and makes the connection between the dust cover and the ball seat more stable.

[0006] Preferably, the inner wall of the lower end of the dust cover is provided with a first annular groove, the first annular groove is communicated with the first annular receiving cavity, and the top wall of the upper end of the dust cover is provided with a second annular groove, the second annular groove is communicated with the second annular receiving cavity. The provision of the first annular groove and the second annular groove facilitates the installation of the first annular frame and the second annular frame.

[0007] Preferably, the first annular skeleton comprises a ring body, the inner end of the ring body is provided with a connecting ring extending inward, the inner diameter of the connecting ring is less than or equal to the outer diameter of the outer wall of the ball seat, the ring body is connected in the first annular receiving cavity, the connecting ring is connected to the first annular groove, and the inner end of the connecting ring is engaged with the outer wall of the ball seat. The connecting ring increases the strength of the first annular skeleton, and the inner end of the connecting ring directly contacts and engages with the outer wall of the ball seat, so that the connection between the dust cover and the ball seat is more stable.

[0008] Preferably, the second annular skeleton comprises a transverse plate portion and a vertical plate portion, wherein the vertical plate portion is connected to the inner end of the transverse plate portion, and the transverse plate portion and the vertical plate portion are connected by bending, so as to increase the strength of the second annular skeleton.

[0009] Preferably, the cross section of the connecting ring is arc-shaped, the horizontal height of the inner end of the connecting ring is higher than the horizontal height of the ring body, and the inner end of the connecting ring is evenly distributed with a plurality of notches along the circumferential direction. After such arrangement, it is convenient to install the first annular frame and prevent the first annular frame from detaching upwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a schematic structural diagram of a front suspension lower arm.

[0011] Figure 2 The utility model is a cross-sectional view of a front suspension lower arm.

[0012] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0013] Figure 4 It is a schematic diagram of the first annular skeleton structure of a front suspension lower arm of the utility model.

[0014] Figure 5 It is a schematic diagram of the second annular skeleton structure of a front suspension lower arm of the utility model.

[0015] Figure 6 The utility model is a schematic diagram of the dust cover structure of the front suspension lower arm.

[0016] As shown in the figure: 1. main body, 11. ball seat, 2. ball pin, 3. dust cover, 31. first annular receiving cavity, 32. second annular receiving cavity, 33. first annular groove, 34. second annular groove, 4. first annular skeleton, 41. ring body, 42. connecting ring, 421. notch, 5. second annular skeleton, 51. horizontal plate part, 52. vertical plate part. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a front suspension lower arm comprises a body 1, a ball pin 2 and a dust cover 3. A ball seat 11 is provided on the body 1, the lower end of the ball pin 2 is connected to the ball seat 11, the dust cover 3 is provided on the ball pin 2 and the ball seat 11, and the upper end of the ball pin 2 extends out of the dust cover 3. The dust cover 3 has openings at both ends, the lower end opening of the dust cover 3 is snap-fitted with the outer wall of the ball seat 11, and the upper end opening of the dust cover 3 is snap-fitted with the outer wall of the upper end of the ball pin 2. A first annular receiving cavity 31 extending in the circumferential direction is provided in the cover wall at the lower end of the dust cover 3, a first annular frame 4 is provided in the first annular receiving cavity 31, a second annular receiving cavity 32 extending in the circumferential direction is provided in the cover wall at the upper end of the dust cover 3, and a second annular frame 5 is provided in the second annular receiving cavity 32.

[0019] The inner wall at the lower end of the dust cover 3 is provided with a first annular groove 33, which is communicated with the first annular receiving cavity 31. The top wall at the upper end of the dust cover 3 is provided with a second annular groove 34, which is communicated with the second annular receiving cavity 32. The first annular groove 33 and the second annular groove 34 are provided to facilitate the installation of the first annular skeleton 4 and the second annular skeleton 5.

[0020] The first annular skeleton 4 includes a ring body 41, and a connecting ring 42 extending inward is provided at the inner end of the ring body 41, which increases the strength of the first annular skeleton 4. The inner diameter of the connecting ring 42 is equal to the outer diameter of the outer wall of the ball seat 11. The ring body 41 is connected to the first annular receiving cavity 31, and the connecting ring 42 is connected to the first annular groove 33. The inner end of the connecting ring 42 directly contacts and is clamped with the outer wall of the ball seat 11.

[0021] The cross section of the connecting ring 42 is arc-shaped, the horizontal height of the inner end of the connecting ring 42 is higher than the horizontal height of the ring body 41, and the inner end of the connecting ring 42 is evenly distributed with a plurality of notches 421 along the circumference, with a total of 24 notches 421 evenly distributed along the circumference of the inner end of the connecting ring 42. This facilitates the installation of the first annular frame 4 and prevents the first annular frame 4 from detaching upward.

[0022] The second annular skeleton 5 includes a transverse plate portion 51 and a vertical plate portion 52 , wherein the vertical plate portion 52 is connected to the inner end of the transverse plate portion 51 , and the transverse plate portion 51 and the vertical plate portion 52 are connected by bending, so that the strength of the second annular skeleton 5 is increased.

[0023] The dust cover 3 of the front suspension lower arm of the utility model is fixed to the ball seat 11 and the ball pin 2 by the first annular skeleton 4 and the second annular skeleton 5 arranged therein, thereby increasing the sealing of the connection, avoiding direct exposure of the first annular skeleton 4 and the second annular skeleton 5 to the outside, delaying attenuation, and extending the service life of the dust cover.

Claims

1. A front suspension lower arm, comprising a body (1), a ball pin (2) and a dust cover (3), wherein the body (1) is provided with a ball seat (11), the lower end of the ball pin (2) is connected to the ball seat (11), the dust cover (3) is provided on the ball pin (2) and the ball seat (11), and the upper end of the ball pin (2) extends out of the dust cover (3); characterized in that: The dust cover (3) has openings at both ends, the lower end opening of the dust cover (3) is snap-fitted with the outer wall of the ball seat (11), and the upper end opening of the dust cover (3) is snap-fitted with the outer wall of the upper end of the ball pin (2). A first annular receiving cavity (31) extending in the circumferential direction is provided in the cover wall at the lower end of the dust cover (3), a first annular frame (4) is provided in the first annular receiving cavity (31), and a second annular frame (5) is provided in the cover wall at the upper end of the dust cover (3).

2. A front suspension lower arm according to claim 1, characterized in that: The inner wall of the lower end of the dust cover (3) is provided with a first annular groove (33), the first annular groove (33) is communicated with the first annular receiving cavity (31), and the top wall of the upper end of the dust cover (3) is provided with a second annular groove (34), the second annular groove (34) is communicated with the second annular receiving cavity (32).

3. The front suspension lower arm according to claim 2, characterized in that: The first annular skeleton (4) comprises a ring body (41), the inner end of the ring body (41) is provided with a connecting ring (42) extending inwardly, the inner diameter of the connecting ring (42) is less than or equal to the outer diameter of the outer wall of the ball seat (11), the ring body (41) is connected in the first annular accommodating cavity (31), the connecting ring (42) is connected to the first annular groove (33), and the inner end of the connecting ring (42) is clamped with the outer wall of the ball seat (11).

4. The front suspension lower arm according to claim 2, characterized in that: The second annular frame (5) comprises a transverse plate portion (51) and a vertical plate portion (52), wherein the vertical plate portion (52) is connected to the inner end of the transverse plate portion (51), and the transverse plate portion (51) and the vertical plate portion (52) are connected by bending.

5. The front suspension lower arm according to claim 3, characterized in that: The cross section of the connecting ring (42) is arc-shaped, the horizontal height of the inner end of the connecting ring (42) is higher than the horizontal height of the ring body (41), and the inner end of the connecting ring (42) is evenly distributed with a plurality of notches (421) along the circumferential direction.

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