Dust cover for pin

Abstract

The utility model relates to the technical field of dust covers, and discloses a pin dust cover which comprises a ball pin dust cover, a ball pin is sleeved in the middle of the ball pin dust cover, and a ball pin control arm is arranged at the bottom of the ball pin. The ball pin dustproof cover, the ball pin, the threaded sleeve and other parts are arranged, and through cooperation of the connecting lantern ring, the threaded sleeve and the fastening nut, after the fastening nut is screwed in place, a gap between the connecting lantern ring and the threaded sleeve at the top of the ball pin dustproof cover is blocked; the three annular air bags arranged on the inner ring of the threaded sleeve at equal intervals make contact with the surface of the ball pin, so that a gap between the surface of the ball pin and the inner ring of the threaded sleeve is blocked, the dustproof effect is improved, in addition, the ball pin dustproof cover and the telescopic spring are integrally formed through the vulcanization technology, the resilience of the ball pin dustproof cover is improved, and the service life of the ball pin dustproof cover is prolonged. The defects that rubber of an existing dust cover deforms under the conditions of high temperature, low temperature and ozone aging, the rebound resilience is insufficient, and the dust-proof capacity is weakened are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of dust covers, in particular to a pin dust cover. Background Art

[0002] The steering ball pin of an automobile is one of the important components for realizing the transmission function in the vehicle. It realizes the operation of multiple components in the automobile by rotating the ball pin set in the ball pin casting. In order to ensure that the ball pin can maintain good working performance, a dust cover is often required on the outside of the ball pin to prevent dust from entering the ball pin and affecting the performance of the ball pin.

[0003] The traditional dust cover is directly mounted on the surface of the ball pin. After long-term use, the rubber of the dust cover is deformed under high and low temperature and ozone aging, and the rebound performance is insufficient. During the steering process of the car, the dust cover mounted on the surface of the ball pin will produce a certain gap with the movement of the ball pin, resulting in a weakened dustproof ability, thereby affecting the performance and service life of the ball pin. Therefore, the utility model designs a pin dust cover to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a pin dust cover to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pin dust cover, comprising: a ball pin dust cover, a ball pin is mounted on the middle part of the ball pin dust cover, and a ball pin control arm is arranged at the bottom of the ball pin, a telescopic spring is arranged inside the ball pin dust cover, a connecting ring is fixedly installed on the top of the ball pin dust cover, and a threaded sleeve is mounted on the inside of the connecting ring, the inside of the threaded sleeve is mounted on the surface of the ball pin, a fastening nut is threadedly installed on the surface of the upper end of the threaded sleeve, a magnetic ring is fixedly installed on the bottom of the ball pin dust cover, and the bottom of the magnetic ring is arranged on the surface of the top of the ball pin control arm.

[0006] Preferably, the telescopic spring is a pagoda-shaped structure, and the telescopic spring and the ball pin dust cover are integrally formed through a vulcanization process.

[0007] Preferably, the end surface of the bottom of the connecting collar is set as a conical surface, and the surface of the lower end of the threaded sleeve is set as an inclined surface matching the conical surface of the bottom of the connecting collar.

[0008] Preferably, three annular airbags are equidistantly and fixedly mounted on the inner ring of the threaded sleeve, and the surfaces of the annular airbags fit the surface of the ball pin.

[0009] Preferably, an annular groove is formed at the bottom of the ball pin dust cover, the top of the magnetic ring is fixedly installed in the annular groove at the bottom of the ball pin dust cover, and the bottom of the magnetic ring is attracted to the surface of the top of the ball pin control arm.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model provides a ball pin dust cover, a ball pin and a threaded sleeve and other components, and cooperates with a connecting collar, a threaded sleeve and a fastening nut. After the fastening nut is tightened in place, the gap between the connecting collar at the top of the ball pin dust cover and the threaded sleeve is blocked, and three annular air bags equidistantly arranged on the inner ring of the threaded sleeve contact the surface of the ball pin, thereby blocking the gap between the surface of the ball pin and the inner ring of the threaded sleeve, thereby improving the dustproof effect. In addition, the ball pin dust cover and the telescopic spring are integrated into a vulcanization process to improve the rebound ability of the ball pin dust cover, thereby overcoming the defect that the rubber of the existing dust cover is deformed under high and low temperatures and ozone aging, and the rebound performance is insufficient, resulting in a weakened dustproof ability;

[0012] 2. The utility model arranges components such as a ball pin dust cover, a ball pin control arm and a magnetic ring. After the ball pin dust cover is installed on the surface of the ball pin, the magnetic ring at the bottom of the ball pin dust cover generates magnetic attraction, which attracts the bottom of the ball pin dust cover to the surface of the top of the ball pin control arm, thereby preventing dust and the like from entering from the bottom of the ball pin dust cover, further improving the dustproof effect of the ball pin and increasing the service life of the ball pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front cross-sectional view of the utility model;

[0014] Figure 2 For the utility model Figure 1 A schematic diagram of the structure enlargement in the middle;

[0015] Figure 3 It is a front view schematic diagram of the telescopic spring of the utility model.

[0016] In the figure: 1, ball pin dust cover; 2, ball pin; 201, ball pin control arm; 3, telescopic spring; 4, connecting ring; 5, threaded sleeve; 6, fastening nut; 7, annular airbag; 8, magnetic ring. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3The utility model provides an embodiment: a pin dust cover, comprising: a ball pin dust cover 1, a ball pin 2 is sleeved in the middle of the ball pin dust cover 1, and a ball pin control arm 201 is arranged at the bottom of the ball pin 2, a telescopic spring 3 is arranged inside the ball pin dust cover 1, a connecting collar 4 is fixedly installed on the top of the ball pin dust cover 1, and a threaded sleeve 5 is sleeved inside the connecting collar 4, the inside of the threaded sleeve 5 is sleeved on the surface of the ball pin 2, a fastening nut 6 is threadedly installed on the surface of the upper end of the threaded sleeve 5, a magnetic ring 8 is fixedly installed on the bottom of the ball pin dust cover 1, and the bottom of the magnetic ring 8 is arranged on the surface of the top of the ball pin control arm 201. By setting the magnetic ring 8, the blocking performance of the bottom of the ball pin dust cover 1 can be improved, dust can be reduced from entering the inside of the ball pin dust cover 1 to affect the use of the ball pin, and the service life of the ball pin can be further improved.

[0019] See also Figure 1 and Figure 3 In this embodiment, the telescopic spring 3 is a pagoda-shaped structure, and the telescopic spring 3 and the ball pin dust cover 1 are integrally formed by a vulcanization process. The ball pin dust cover is improved by the integrated vulcanization process, which overcomes the problem that the rubber of the existing dust cover is deformed under high and low temperatures and ozone aging, and the rebound performance is insufficient, resulting in the defect of weakened dustproof ability.

[0020] See also Figure 1 In this embodiment, the end surface of the bottom of the connecting collar 4 is set as a conical surface, and the surface of the lower end of the threaded sleeve 5 is set as an inclined surface that matches the conical surface of the bottom of the connecting collar 4. After the threaded sleeve 5 is moved to the top of the connecting collar 4 by rotating the tightening nut 6, the inclined surface of the lower end surface of the threaded sleeve 5 is pressed and fitted on the conical surface of the bottom of the connecting collar 4, and the gap between the connecting collar 4 and the threaded sleeve 5 is blocked, further improving the dustproof effect of the top of the ball pin dust cover 1.

[0021] See also Figure 1-2 In this embodiment, three annular airbags 7 are fixedly installed at equal intervals on the inner ring of the threaded sleeve 5, and the surface of the annular airbags 7 is in contact with the surface of the ball pin 2. When the threaded sleeve 5 is mounted on the surface of the ball pin 2, the three annular airbags 7 at equal intervals on the inner ring of the threaded sleeve 5 are squeezed by the surface of the ball pin 2 to produce a certain deformation, so that the contact area between the annular airbags 7 and the surface of the ball pin 2 is increased, thereby blocking the gap between the surface of the ball pin 2 and the inner ring of the threaded sleeve 5, and improving the dustproof effect.

[0022] See also Figure 1In this embodiment: an annular groove is provided at the bottom of the ball pin dust cover 1, and the top of the magnetic ring 8 is fixedly installed in the annular groove at the bottom of the ball pin dust cover 1, and the bottom of the magnetic ring 8 is attracted to the surface of the top of the ball pin control arm 201. Since the automobile control arm is made of cast iron, after the ball pin dust cover 1 is installed on the surface of the ball pin 2, the magnetic ring 8 at the bottom of the ball pin dust cover 1 generates magnetic attraction, so that after the ball pin dust cover 1 is deformed and quickly rebounded by the telescopic spring 3, the bottom of the ball pin dust cover 1 is attracted to the surface of the top of the ball pin control arm 201 through the magnetic ring 8, which can prevent dust and the like from entering from the bottom of the ball pin dust cover 1, and further improve the dustproof effect of the ball pin 2.

[0023] Working principle: During the installation of the ball pin dust cover, the threaded sleeve 5 in the middle of the ball pin dust cover 1 is mounted on the surface of the ball pin 2. At this time, the three annular airbags 7 equidistantly disposed on the inner circle of the threaded sleeve 5 are squeezed by the surface of the ball pin 2 to produce a certain deformation, so that the contact area between the annular airbags 7 and the surface of the ball pin 2 is increased, thereby blocking the gap between the surface of the ball pin 2 and the inner circle of the threaded sleeve 5. Then, by rotating the tightening nut 6, the threaded sleeve 5 is moved to the top of the connecting collar 4, and the inclined surface of the lower end surface of the threaded sleeve 5 is pressed and fitted on the conical surface at the bottom of the connecting collar 4, so as to block the gap between the connecting collar 4 and the threaded sleeve 5. The magnetic ring 8 at the bottom of the ball pin dust cover 1 generates magnetic attraction, so that the bottom of the ball pin dust cover 1 is attracted to the surface at the top of the ball pin control arm 201, and the installation of the ball pin dust cover 1 is completed. The contents not described in detail in this description belong to the prior art known to professionals in this field.

[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pin dust cover, comprising: A ball pin dust cover (1) is characterized in that: a ball pin (2) is mounted in the middle of the ball pin dust cover (1), and a ball pin control arm (201) is arranged at the bottom of the ball pin (2), a telescopic spring (3) is arranged inside the ball pin dust cover (1), a connecting ring (4) is fixedly installed on the top of the ball pin dust cover (1), and a threaded sleeve (5) is mounted inside the connecting ring (4), the inside of the threaded sleeve (5) is mounted on the surface of the ball pin (2), a fastening nut (6) is threadedly installed on the surface of the upper end of the threaded sleeve (5), and a magnetic ring (8) is fixedly installed on the bottom of the ball pin dust cover (1), and the bottom of the magnetic ring (8) is arranged on the surface of the top of the ball pin control arm (201).

2. The pin dust cover according to claim 1, characterized in that: The telescopic spring (3) is a pagoda-shaped structure, and the telescopic spring (3) and the ball pin dust cover (1) are integrally formed through a vulcanization process.

3. The pin dust cover according to claim 1, characterized in that: The end surface of the bottom of the connecting collar (4) is arranged as a conical surface, and the surface of the lower end of the threaded sleeve (5) is arranged as an inclined surface matching the conical surface of the bottom of the connecting collar (4).

4. The pin dust cover according to claim 1, characterized in that: The inner ring of the threaded sleeve (5) is fixedly provided with three annular air bags (7) at equal intervals, and the surface of the annular air bags (7) is fitted on the surface of the ball pin (2).

5. The pin dust cover according to claim 1, characterized in that: An annular groove is provided at the bottom of the ball pin dust cover (1), and the top of the magnetic ring (8) is fixedly installed in the annular groove at the bottom of the ball pin dust cover (1), and the bottom of the magnetic ring (8) is attracted to the surface of the top of the ball pin control arm (201).

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