Anti-following-rotation compression-resistant spherical hinge structure

Abstract

The utility model provides an anti-following-rotation compression-resistant spherical hinge structure, which belongs to the field of automobile spherical hinge structure design, and comprises a ball pin body, a ball pin seat, a ball pin sleeve and a plug seat, the ball head part of the ball pin body is arranged in the ball pin seat to form a spherical friction pair, a cavity for placing the ball pin seat is arranged in the ball pin sleeve, and the plug seat is arranged in the cavity. The plug seat is arranged in the ball pin sleeve and located on the upper portion of the ball pin sleeve, the ball pin sleeve is provided with a spin riveting closing-in part used for abutting against the upper surface of the plug seat, the top of the ball pin sleeve is provided with a follow-up rotation preventing step, and the upper surface of the plug seat is provided with a follow-up rotation preventing groove. The following-rotation-preventing step is arranged at the top of the ball pin base, the problem that the ball pin base rotates along with the ball pin body when the ball pin body is started is solved, the following-rotation-preventing groove is formed in the upper surface of the plug base, the ball pin base is prevented from driving the plug base to rotate along with the plug base, and therefore the following-rotation-preventing effect is achieved, and the performance of the ball pin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile ball joint structure design, in particular to an anti-rotation and anti-compression type ball joint structure. Background Art

[0002] The compression-resistant ball joint is used for the lower arm of the double wishbone suspension. It bears the weight of the shock absorber and the vehicle body itself, so the axial downward pressure load is large, so a top-spin rivet structure with large pressure-release force is adopted. At present, the compression-resistant ball joint has the problem that when the ball pin body is started, the ball pin seat and the plug seat will rotate. Therefore, it is necessary to develop a compression-resistant ball joint structure that can prevent rotation and solve the current problem. Utility Model Content

[0003] The utility model aims to provide an anti-rotation and pressure-resistant ball joint structure, which can prevent the ball pin seat and the plug seat from rotating when the ball pin body is started, thereby improving the performance of the ball pin.

[0004] The embodiment of the utility model is realized through the following technical scheme: an anti-rotation and pressure-resistant ball joint structure, including a ball pin body, a ball pin seat, a ball pin sleeve and a plug seat, the ball head of the ball pin body is arranged in the ball pin seat to form a spherical friction pair, the ball pin sleeve is provided with a cavity for placing the ball pin seat, the plug seat is arranged in the ball pin sleeve and located at the upper part of the ball pin seat, the ball pin sleeve is provided with a rivet closing part for pressing against the upper surface of the plug seat, the top of the ball pin seat is provided with an anti-rotation step, and the upper surface of the plug seat is provided with an anti-rotation groove.

[0005] Furthermore, the thickness of the anti-rotation step is smaller than the thickness of the ball pin seat.

[0006] Furthermore, the thickness of the anti-rotation step is 0.5 mm±0.05 mm.

[0007] Furthermore, the outer wall of the ball pin seat comprises a cylindrical section, a spherical section and a conical section from top to bottom, and the shape of the ball pin sleeve cavity is adapted to the shape of the outer surface of the ball pin seat.

[0008] Furthermore, the inner wall of the ball and pin seat includes an upper spherical surface and a lower spherical surface, and a plurality of grease grooves are distributed on the upper spherical surface and the lower spherical surface.

[0009] Furthermore, the depth of the grease groove is 0.13±0.02 mm.

[0010] Furthermore, the distance between two adjacent grease grooves on the upper spherical surface is greater than the distance between two adjacent grease grooves on the lower spherical surface.

[0011] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0012] 1. The utility model provides an anti-rotation step on the top of the ball pin seat to prevent the ball pin seat from rotating when the ball pin body is started, and provides an anti-rotation groove on the upper surface of the plug seat to prevent the ball pin seat from driving the plug seat to rotate together, thereby achieving the effect of anti-rotation and improving the performance of the ball pin.

[0013] 2. The utility model opens a plurality of grease grooves with a depth of 0.13mm±0.02mm on the inner wall of the ball pin seat so as to make the entire ball pin seat present a design effect of being soft inside and hard outside. After the ball joint is matched, the strain index of the spherical pair of the ball pin seat is large, so that the static friction coefficient is small, so that the ball joint can achieve the purpose of low starting torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The overall structural diagram of the anti-rotation and anti-compression type ball joint structure provided by the utility model;

[0016] Figure 2 It is a structural schematic diagram of the ball pin seat and the plug seat of the utility model;

[0017] Figure 3 It is a cross-sectional view of the ball pin seat of the utility model;

[0018] Icons: 1-ball pin body, 2-ball pin seat, 21-anti-rotation step, 22-cylindrical section, 23-spherical section, 24-conical section, 25-upper spherical surface, 26-lower spherical surface, 27-grease groove, 3-ball pin sleeve, 31-spin-rivet closing part, 4-plug seat, 41-anti-rotation groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1

[0022] The following is further described in conjunction with specific embodiments. Figure 1-Figure 3 As shown, the utility model is an anti-rotation and anti-compression ball joint structure, comprising a ball pin body 1, a ball pin seat 2, a ball pin sleeve 3 and a plug seat 4. The ball head of the ball pin body 1 is arranged in the ball pin seat 2 to form a spherical friction pair. The ball pin sleeve 3 is provided with a cavity for placing the ball pin seat 2. The plug seat 4 is arranged in the ball pin sleeve 3 and located on the upper part of the ball pin seat 2. The ball pin sleeve 3 is provided with a rivet closing portion 31 for pressing against the upper surface of the plug seat 4. The top of the ball pin seat 2 is provided with an anti-rotation step 21, and the upper surface of the plug seat 4 is provided with an anti-rotation groove 41. The setting of the anti-follow-rotation step 21 increases the contact area between the ball pin seat 2 and the plug seat 4, and at the same time can also improve the static friction coefficient between the ball pin seat 2 and the plug seat 4 by improving the plastic deformation ability of the top end of the ball pin seat 2, thereby preventing the ball pin seat 2 and the ball pin body 1 from following each other; the setting of the anti-follow-rotation groove 41 makes the rivet seam of the plug seat 4 and the rotary riveted closing part 31 embedded and fixed, thereby preventing the ball pin seat 2 and the plug seat 4 from following each other when the ball pin body 1 is started.

[0023] In this embodiment, the thickness of the anti-rotation step 21 is 0.5 mm ± 0.05 mm, which is less than the nominal radial thickness of the ball pin seat 2 of 1.35 mm ± 0.05 mm. This is to prevent the anti-rotation step 21 from having a reduced plastic deformation capacity due to excessive thickness, thereby affecting the anti-rotation effect. The smaller the thickness of the anti-rotation step 21, the stronger the plastic deformation capacity. Since the ball pin seat 2 is processed by injection molding, the minimum thickness is 0.5 mm to avoid affecting the molding quality during processing. Therefore, the thickness of the anti-rotation step 21 is set to 0.5 mm ± 0.05 mm.

[0024] Reference Figure 2 As shown, the outer wall of the ball pin seat 2 is composed of a three-section structure, which includes a cylindrical section 22, a spherical section 23 and a conical section 24 from top to bottom, and the shape of the cavity of the ball pin sleeve 3 is adapted to the shape of the outer surface of the ball pin seat 2. The end face of the upper cylindrical section 22 is a plane, which can directly match the structure of the annular cylinder; the spherical section 23 in the middle has the same structure as the existing conventional ball pin seat 2; the conical section 24 at the bottom makes it more convenient to position the ball pin seat 2 and the ball pin sleeve 3.

[0025] Reference Figure 3As shown, the inner wall of the ball pin seat 2 includes an upper spherical surface 25 and a lower spherical surface 26, and the upper spherical surface 25 and the lower spherical surface 26 are both distributed with multiple grease grooves 27 with a depth of 0.13±0.02mm. The provision of the grease grooves 27 makes the entire ball pin seat 2 present a design effect of being soft inside and hard outside. After the ball joint is matched, the strain index of the spherical pair of the ball pin seat 2 is large, so that the static friction coefficient is small, so that the ball joint achieves the purpose of low starting torque. Since the upper spherical surface 25 has a small bearing area and low rigidity, and the lower spherical surface 26 has a large bearing area and high rigidity, the distance between two adjacent grease grooves 27 on the upper spherical surface 25 is greater than the distance between two adjacent grease grooves 27 on the lower spherical surface 26, that is, the amount of grease on the lower spherical surface 26 is greater and the distribution is denser.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-rotation and anti-compression ball joint structure, comprising a ball pin body (1), a ball pin seat (2), a ball pin sleeve (3) and a plug seat (4), wherein the ball head of the ball pin body (1) is arranged in the ball pin seat (2) to form a spherical friction pair, the ball pin sleeve (3) is provided with a cavity for placing the ball pin seat (2), the plug seat (4) is arranged in the ball pin sleeve (3) and located at the upper part of the ball pin seat (2), and the ball pin sleeve (3) is provided with a rivet closing portion (31) for pressing against the upper surface of the plug seat (4), characterized in that: The top of the ball pin seat (2) is provided with an anti-rotation step (21), and the upper surface of the blocking seat (4) is provided with an anti-rotation groove (41).

2. The anti-rotation and compression-resistant ball joint structure according to claim 1 is characterized in that: The thickness of the anti-rotation step (21) is smaller than the thickness of the ball pin seat (2).

3. The anti-rotation and anti-compression ball joint structure according to claim 2 is characterized in that: The thickness of the anti-rotation step (21) is 0.5 mm±0.05 mm.

4. The anti-rotation and anti-compression ball joint structure according to claim 1 is characterized in that: The outer wall of the ball pin seat (2) comprises a cylindrical section (22), a spherical section (23) and a conical section (24) from top to bottom, and the shape of the cavity of the ball pin sleeve (3) is adapted to the shape of the outer surface of the ball pin seat (2).

5. The anti-rotation and anti-compression ball joint structure according to claim 1 is characterized in that: The inner wall of the ball and pin seat (2) comprises an upper spherical surface (25) and a lower spherical surface (26), and a plurality of grease grooves (27) are distributed on the upper spherical surface (25) and the lower spherical surface (26).

6. The anti-rotation and anti-compression ball joint structure according to claim 5, characterized in that: The depth of the grease groove (27) is 0.13 mm ± 0.02 mm.

7. The anti-rotation and compression-resistant ball joint structure according to claim 5 or 6, characterized in that: The distance between two adjacent grease grooves (27) on the upper spherical surface (25) is greater than the distance between two adjacent grease grooves (27) on the lower spherical surface (26).

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