Automobile steering column supporting bearing

Abstract

The utility model relates to the technical field of automobile parts, in particular to an automobile steering column supporting bearing which comprises an inner ring and an outer ring, the central axis of the inner ring and the central axis of the outer ring coincide, a rolling body is arranged between the inner ring and the outer ring, a rubber groove is formed in the inner wall of the inner ring, and the outer ring comprises a first outer ring and a second outer ring. The first outer ring and the second outer ring are connected through a deformable damping layer, and a dustproof mechanism is arranged between the inner ring and the first outer ring. The automobile steering column supporting bearing provided by the utility model is provided with a plurality of sealing mechanisms, is good in sealing performance, prevents dust and other impurities from entering, ensures the service life, maintains the stability of a steering system, and also realizes the filling of a gap between the inner ring and an automobile steering column; and the deformable damping layer has damping and sealing effects, so that the automobile steering column and the inner ring are coaxially matched well, and the abrasion speed of the rolling body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile components, in particular to an automobile steering column supporting bearing. Background Art

[0002] The car steering column support bearing is an important component of the car steering system. Its inner periphery is connected to the steering column and the outer periphery is connected to the car body. Its performance and stability are directly related to the safety and driving experience of the car. Its damage will cause many problems to normal driving.

[0003] Optimizing the design to improve the sealing and shock absorption properties of the steering column support bearing can effectively extend its service life and enhance the driving experience. Summary of the invention

[0004] The purpose of the utility model is to provide a supporting bearing for an automobile steering column, which has excellent sealing performance, shock absorption performance and a long service life.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] An automobile steering column support bearing comprises an inner ring and an outer ring whose central axes coincide with each other, a rolling body is arranged between the inner ring and the outer ring, a rubber groove is arranged on the inner wall of the inner ring, the outer ring comprises a first outer ring and a second outer ring, the first outer ring and the second outer ring are connected by a deformable shock-absorbing layer, and a dustproof mechanism is arranged between the inner ring and the first outer ring.

[0007] Furthermore, the dustproof mechanism includes a separate dust cover and a dustproof groove, the outermost periphery of the dust cover in a buckle shape is provided with a vertical wall, the bottom end of the vertical wall is provided with a groove opening downward, a sealing ring that can move up and down is provided in the groove, the top of the sealing ring is connected to the vertical wall by a spring, the opening of the dustproof groove is upward, the bottom end of the sealing ring extends into the depression of the dustproof groove and abuts against it, the dustproof mechanism covers the gap between the inner ring and the outer ring, the dust cover is fixedly connected to the outer wall of the inner ring, and the dustproof groove is fixedly connected to the upper surface of the first outer ring.

[0008] Furthermore, the deformable shock-absorbing layer includes a flexible ring and a second spring, and flexible rings are arranged above and below the second spring, and the second spring is placed horizontally.

[0009] Furthermore, a retaining frame is provided on the rolling body, and all the rolling bodies are connected through the retaining frame.

[0010] Furthermore, the upper and lower heights of the inner ring are greater than those of the outer ring.

[0011] Furthermore, a solidified hot-melt adhesive ring is arranged in the adhesive groove, and the hot-melt adhesive ring does not expose the inner wall surface of the inner ring.

[0012] Furthermore, the gap between the first outer ring and the second outer ring is sealed up and down.

[0013] Furthermore, the height of the glue groove is above the outer ring.

[0014] The beneficial effects of the technical solution of the utility model are:

[0015] The automobile steering column support bearing provided by the utility model is provided with multiple sealing mechanisms, which have good sealing performance, prevent dust and other debris from entering, ensure the service life, maintain the stability of the steering system, and fill the gap between the inner ring and the automobile steering column; a deformable shock-absorbing layer is provided to have both shock-absorbing and sealing functions, and also make the automobile steering column and the inner ring coaxially well matched, thereby reducing the wear rate of the rolling body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of point B in FIG.

[0020] Figure 4 for Figure 2 The enlarged schematic diagram of point C in FIG.

[0021] Figure 5 for Figure 2 The enlarged schematic diagram of D in FIG.

[0022] Markings in the figure: 1, inner ring; 1a, rubber groove; 2, outer ring; 2a, first outer ring; 2b, second outer ring; 2c, deformable shock-absorbing layer; 2c-1, flexible ring; 2c-2, spring two; 3, rolling body; 4, dustproof mechanism; 4a, dust cover; 4b, sealing ring; 4c, spring one; 4d, dustproof groove. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 5 The automobile steering column support bearing comprises an inner ring 1 and an outer ring 2 whose central axes coincide with each other, a rolling body 3 is arranged between the inner ring 1 and the outer ring 2, and the rolling body 3 plays the role of bearing and dispersing loads, reducing friction and wear, achieving smooth rotation and improving transmission efficiency in the bearing, a retaining frame is arranged on the rolling body 3, all the rolling bodies 3 are connected by the retaining frame, and the retaining frame separates each rolling body one by one, and an adhesive groove 1a is arranged on the inner wall of the inner ring 1, and a cured hot-melt adhesive ring is arranged in the adhesive groove 1a, and the hot-melt adhesive is a thermoplastic adhesive, which is solid at room temperature and melts into liquid at a higher temperature, and is used to fill the gap between the inner ring 1 and the automobile steering column. In the initial cured state, the hot-melt adhesive ring does not expose the inner wall surface of the inner ring 1, so that the inner ring 1 is conveniently put on the outside of the automobile steering column.

[0025] The outer ring 2 includes a first outer ring 2a and a second outer ring 2b. The first outer ring 2a is located inside the second outer ring 2b. The first outer ring 2a and the second outer ring 2b are connected by a deformable shock absorbing layer 2c. Figure 5 As shown, the deformable shock-absorbing layer 2c includes a flexible ring 2c-1 and a spring 2c-2. Flexible rings 2c-1 are arranged above and below the spring 2c-2. The spring 2c-2 is placed horizontally. The flexible ring 2c-1 is preferably a flexible rubber ring, which has both shock-absorbing and sealing functions. The combination of the spring 2c-2 and the flexible ring 2c-1 effectively reduces the vibration transmission between the first outer ring 2a and the second outer ring 2b. The outer wall of the second outer ring 2b is provided with a mounting hole for connecting to the vehicle body. Because of the flexible connection between the first outer ring 2a and the second outer ring 2b, the central axis of the inner ring 1 can be tilted relative to the central axis of the second outer ring 2b, so that the steering column of the automobile and the inner ring 1 are well coaxially matched, thereby reducing the wear rate of the rolling body 3.

[0026] The sealing of the steering column support bearing of an automobile is a crucial feature, which directly affects the performance, durability and stability of the steering system of the bearing. The sealing of the bearing is mainly concerned with preventing external pollutants (such as dust, moisture, etc.) from entering the bearing. Figure 2 , Figure 4As shown, in order to enhance the sealing performance of the bearing, a dustproof mechanism 4 is arranged between the inner ring 1 and the first outer ring 2a, and the dustproof mechanism 4 includes a separate dust cover 4a and a dustproof groove 4d. The dust cover 4a in a buckle shape is provided with a vertical wall at the outermost periphery, and a groove with an opening downward is provided at the bottom end of the vertical wall, and a sealing ring 4b that can move up and down is provided in the groove. The top of the sealing ring 4b is connected to the vertical wall by a spring 4c, and the opening of the dustproof groove 4d is upward. The bottom end of the sealing ring 4b extends into the depression of the dustproof groove 4d and abuts against it. The dustproof mechanism 4a is fixedly connected to the outer wall of the inner ring 1, and the dustproof groove 4d is fixedly connected to the upper surface of the first outer ring 2a. Under the pressure of the spring 4c, the sealing ring 4b presses the dustproof groove 4d while the two can rotate relative to each other, so that the dustproof mechanism 4 covers the gap between the inner ring 1 and the outer ring 2, and then the gap between the first outer ring 2a and the second outer ring 2b is sealed up and down, so that the entire bearing structure has good sealing performance.

[0027] In addition, the upper and lower heights of the inner ring 1 are greater than those of the outer ring 2, and the height of the glue groove 1a is above the outer ring 2. When the inner ring 1 is mounted outside the steering column of the automobile, it is convenient to heat the outer wall of the inner ring 1 where the glue groove 1a is located, such as by using a hot air gun or electromagnetic induction heating, so that the internal hot melt adhesive melts and flows, filling the gap between the inner ring 1 and the steering column of the automobile and then cooling and solidifying.

[0028] The utility model is provided with multiple sealing mechanisms with good sealing performance, which can prevent dust and other debris from entering, ensure the service life of the bearing, maintain the stability of the steering system, and fill the gap between the inner ring 1 and the steering column of the automobile; a deformable shock-absorbing layer 2c is provided to have both shock-absorbing and sealing functions, and also make the steering column of the automobile and the inner ring 1 coaxially well matched, thereby reducing the wear rate of the rolling body 3.

[0029] The above embodiments of the present invention are for inspiration. Through the above description, relevant technicians can make various changes and modifications without departing from the technical concept of the present invention. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. Automobile steering column support bearing, characterized by: The invention comprises an inner ring (1) and an outer ring (2) whose central axes coincide with each other, a rolling body (3) is arranged between the inner ring (1) and the outer ring (2), a rubber groove (1a) is arranged on the inner wall of the inner ring (1), the outer ring (2) comprises a first outer ring (2a) and a second outer ring (2b), the first outer ring (2a) and the second outer ring (2b) are connected via a deformable shock-absorbing layer (2c), and a dustproof mechanism (4) is arranged between the inner ring (1) and the first outer ring (2a).

2. The automobile steering column support bearing according to claim 1, characterized in that: The dustproof mechanism (4) comprises a separate dustproof cover (4a) and a dustproof groove (4d), wherein the outermost portion of the dustproof cover (4a) in a buckled shape is provided with a vertical wall, the bottom end of the vertical wall is provided with a groove opening downward, a sealing ring (4b) movable up and down is provided in the groove, the top end of the sealing ring (4b) is connected to the vertical wall via a spring (4c), the opening of the dustproof groove (4d) is upward, the bottom end of the sealing ring (4b) extends into the concave portion of the dustproof groove (4d) and abuts against it, the dustproof mechanism (4) covers the gap between the inner ring (1) and the outer ring (2), wherein the dustproof cover (4a) is fixedly connected to the outer wall of the inner ring (1), and the dustproof groove (4d) is fixedly connected to the upper surface of the first outer ring (2a).

3. The automobile steering column support bearing according to claim 1, characterized in that: The deformable shock-absorbing layer (2c) comprises a flexible ring (2c-1) and a second spring (2c-2), wherein the flexible ring (2c-1) is arranged above and below the second spring (2c-2), and the second spring (2c-2) is placed horizontally.

4. The automobile steering column support bearing according to claim 1, characterized in that: A retaining frame is provided on the rolling body (3), and all the rolling bodies (3) are connected via the retaining frame.

5. The automobile steering column support bearing according to claim 2, characterized in that: The upper and lower heights of the inner ring (1) are greater than those of the outer ring (2).

6. The automobile steering column support bearing according to claim 1, characterized in that: A solidified hot-melt adhesive ring is arranged in the adhesive groove (1a), and the hot-melt adhesive ring does not protrude from the inner wall surface of the inner ring (1).

7. The automobile steering column support bearing according to claim 3, characterized in that: The gap between the first outer ring (2a) and the second outer ring (2b) is sealed vertically.

8. The automobile steering column support bearing according to claim 6, characterized in that: The height of the glue groove (1a) is above the outer ring (2).

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