Automobile steering outer joint

Abstract

The utility model relates to the technical field of automobile parts, and discloses an automobile steering outer joint which comprises a ball pin, a dust cover arranged at the lower end of the ball pin, a ball seat arranged at the lower end of the dust cover, a sleeve sleeved on the outer side wall of the lower end of the ball pin, an annular sliding groove formed in the middle of the outer side of the sleeve, and a rubber ring fixedly installed on the edge of an upper port of the dust cover. A guiding inclined face is arranged on the edge of the upper end of the annular sliding groove, and the lower end of the guiding inclined face communicates with the annular sliding groove. According to the technical scheme, the connecting position of the rubber ring at the upper end of the dust cover can slide in the annular sliding groove so that twisting force can be offset, the rubber ring can be matched with the balls in the annular sliding groove so that sliding smoothness of the rubber ring can be guaranteed, and the rubber ring can be prevented from falling off due to the arrangement of the guide inclined face on the annular sliding groove. Therefore, the rubber ring can be guided to be clamped into the annular sliding groove, connection between the dust cover and the sleeve is facilitated, and the installation efficiency between the dust cover and the ball pin is further guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an automobile steering outer joint. Background Art

[0002] The external steering joint of an automobile generally includes an external joint and a ball pin. One end of the external joint is provided with an assembly hole, in which a ball seat is installed. One end of the ball pin is a ball head. During installation, the ball head of the ball pin is pressed into the ball seat, and the dust cover and flange cover are installed from bottom to top. The dust cover is used to prevent the entry of dust, mud and water, and the flange cover plays a role in stabilizing the dust cover and improving the sealing performance of the dust cover.

[0003] The search publication number is (CN218063067U), which discloses an automobile steering external joint, including a ball pin and a dust cover and a flange cover installed on the ball pin. The outer wall of the flange cover where the ball pin is installed includes a first tapered section that is smaller at the top and larger at the bottom. The inner hole side wall of the flange cover includes a second tapered section that matches the first tapered section. The angle between the outer wall of the first tapered section and the vertical plane is between 25° and 35°. Further, the angle between the outer wall of the first tapered section and the vertical plane is 30°. Further, the outer wall of the flange cover where the ball pin is installed includes a straight wall section located above the first tapered section, and the inner hole side wall of the flange cover includes a second straight wall section that matches the first straight wall section.

[0004] When implementing this technical solution, at least the following defects still exist: although this utility model can reduce the assembly accuracy of the external joint and the ball pin, due to the fixed limitation of the dust cover, the dust cover will be twisted and deformed every time the ball pin moves, causing the connection between the dust cover and the ball pin to be easily damaged, thereby affecting the protection of the external joint and the ball pin, and it is urgent to improve. Therefore, we propose an automobile steering external joint. Utility Model Content

[0005] The utility model aims to provide an automobile steering outer joint, which solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile steering external joint, comprising a ball pin, a dust cover is provided at the lower end of the ball pin, a ball seat is provided at the lower end of the dust cover, a sleeve is sleeved on the outer side wall of the lower end of the ball pin, an annular groove is provided in the middle part of the outer side of the sleeve, a rubber ring is fixedly installed on the upper end edge of the dust cover, a guiding slope is provided on the upper end edge of the annular groove, and the lower end of the guiding slope is connected to the annular groove.

[0007] By adopting the above technical scheme, the upper rubber ring connection of the dust cover can slide in the annular groove to offset the twisting force, and can cooperate with the ball in the annular groove to ensure the smoothness of the sliding of the rubber ring. The guiding inclined surface on the annular groove can also be set to guide the rubber ring to be inserted into the annular groove, thereby facilitating the connection between the dust cover and the sleeve, and further ensuring the installation efficiency between the dust cover and the ball pin.

[0008] Optionally, the size of the rubber ring is matched with the size of the annular slide groove, and the rubber ring is slidably connected to the annular slide groove.

[0009] By adopting the above technical solution, it is convenient to arrange the rubber ring and the annular slide groove, thereby ensuring the stability of the connection between the upper end of the dust cover and the sleeve.

[0010] Optionally, a plurality of balls are rollingly mounted on the inner wall of the annular groove, and the balls are distributed in an annular shape.

[0011] By adopting the above technical solution, the arrangement of the ball is facilitated, thereby ensuring the smoothness of the contact between the ball and the rubber ring, thereby facilitating the sliding of the rubber ring in the annular slide groove.

[0012] Optionally, the balls are symmetrically arranged, and the inner sides of the balls are in contact with the outer sides of the rubber rings.

[0013] By adopting the above technical solution, the ball and the rubber ring are fitted together, so that the rubber ring can slide in the annular slide groove.

[0014] Optionally, a bump is provided at the upper end of the guiding slope, and the bumps are equidistantly distributed.

[0015] By adopting the above technical solution, the position of the rubber ring can be limited by setting the protrusion, thereby ensuring the stability of the rubber ring.

[0016] Optionally, a sealing ring is bonded along the upper end of the sleeve, and the inner side of the sealing ring fits with the outer side wall of the ball pin.

[0017] By adopting the above technical solution, it is convenient to cover the gap above the sleeve through the setting of the sealing ring, thereby ensuring the overall sealing of the dust cover.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] The technical solution of the present application is to provide a ball pin, a dust cover, a ball seat, a rubber ring, a guiding bevel and a sealing ring. When the dust cover is twisted and deformed, the upper rubber ring connection of the dust cover can slide in the annular groove to offset the twisting force, and the ball in the annular groove can be cooperated to ensure the smooth sliding of the rubber ring. The guiding bevel on the annular groove can be set to guide the rubber ring to be stuck in the annular groove, thereby facilitating the connection between the dust cover and the sleeve, and further ensuring the installation efficiency between the dust cover and the ball pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of an automobile steering external joint of the utility model;

[0022] Figure 2 The utility model is a partial enlarged structural schematic diagram of position A of an automobile steering outer joint.

[0023] In the figure: 1, ball pin; 11, dust cover; 12, ball seat; 2, sleeve; 21, annular groove; 22, rubber ring; 23, ball; 3, guiding slope; 4, bump; 5, sealing ring. DETAILED DESCRIPTION

[0024] See also Figure 1-2 The utility model provides a technical solution: an automobile steering external joint, including a ball pin 1, a dust cover 11 is arranged at the lower end of the ball pin 1, a ball seat 12 is arranged at the lower end of the dust cover 11, a sleeve 2 is sleeved on the outer wall of the lower end of the ball pin 1, an annular groove 21 is provided in the middle of the outer side of the sleeve 2, a rubber ring 22 is fixedly installed on the upper end edge of the dust cover 11, a guide slope 3 is provided on the upper end edge of the annular groove 21, and the lower end of the guide slope 3 is connected to the annular groove 21, and the balls 23 are symmetrically arranged, and the inner side of the balls 23 is in contact with the outer side of the rubber ring 22. It is convenient to fit the ball 23 with the rubber ring 22, so that the rubber ring 22 can slide in the annular groove 21. A bump 4 is provided at the upper end of the guide slope 3, and the bumps 4 are equidistantly distributed, so that the position of the rubber ring 22 can be limited by the setting of the bumps 4, thereby ensuring the stability of the rubber ring 22. A sealing ring 5 is bonded to the upper end edge of the sleeve 2, and the inner side of the sealing ring 5 fits with the outer side wall of the ball pin 1, so that the sealing ring 5 is provided to block the gap above the sleeve 2, thereby ensuring the overall sealing of the dust cover 11.

[0025] The size of the rubber ring 22 matches that of the annular groove 21 , and the rubber ring 22 is slidably connected to the annular groove 21 , so that the stability of the connection between the upper end of the dust cover 11 and the sleeve 2 is ensured by the arrangement of the rubber ring 22 and the annular groove 21 .

[0026] A plurality of balls 23 are rollingly mounted on the inner wall of the annular groove 21 , and the balls 23 are distributed in an annular shape, so that the balls 23 can be arranged to ensure smooth contact between the balls 23 and the rubber ring 22 , thereby facilitating the rubber ring 22 to slide in the annular groove 21 .

[0027] During use, when the dust cover 11 is twisted and deformed, the twisting force of the dust cover 11 is transmitted to the upper end of the dust cover 11, and then slides in the annular groove 21 through the connection of the rubber ring 22 at the upper end of the dust cover 11, thereby offsetting the twisting force. At the same time, with the ball 23 in the annular groove 21, the smoothness of the sliding of the rubber ring 22 can be ensured. At the same time, due to the setting of the guiding slope 3 on the annular groove 21, the rubber ring 22 can be guided to be stuck in the annular groove 21, thereby facilitating the connection between the dust cover 11 and the sleeve 2, and further ensuring the installation efficiency between the dust cover 11 and the ball pin 1.

Claims

1. An automobile steering external joint, comprising a ball pin (1), characterized in that: The lower end of the ball pin (1) is provided with a dust cover (11), the lower end of the dust cover (11) is provided with a ball seat (12), the outer wall of the lower end of the ball pin (1) is sleeved with a sleeve (2), the outer middle part of the sleeve (2) is provided with an annular slide groove (21), the upper end edge of the dust cover (11) is fixedly mounted with a rubber ring (22), the upper end edge of the annular slide groove (21) is provided with a guiding inclined surface (3), and the lower end of the guiding inclined surface (3) is connected to the annular slide groove (21).

2. The automobile steering external joint according to claim 1, characterized in that: The size of the rubber ring (22) matches the size of the annular slide groove (21), and the rubber ring (22) is slidably connected to the annular slide groove (21).

3. The automobile steering outer joint according to claim 1, characterized in that: A plurality of balls (23) are rollingly mounted on the inner wall of the annular slide groove (21), and the balls (23) are distributed in an annular shape.

4. The automobile steering outer joint according to claim 3, characterized in that: The balls (23) are symmetrically arranged, and the inner side of the balls (23) is in contact with the outer side of the rubber ring (22).

5. The automobile steering outer joint according to claim 1, characterized in that: The upper end of the guiding inclined surface (3) is provided with a bulge (4), and the bulges (4) are distributed at equal distances.

6. The automobile steering outer joint according to claim 1, characterized in that: A sealing ring (5) is bonded along the upper end of the sleeve (2), and the inner side of the sealing ring (5) is in contact with the outer side wall of the ball pin (1).

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