Steering shaft boot structure

Abstract

The application provides a steering shaft sleeve structure, which comprises a lower sleeve and an upper sleeve sleeved and installed on the lower sleeve, a first arc-shaped positioning groove and two second arc-shaped positioning grooves are arranged on the outer side surface of the lower sleeve, a first arc-shaped positioning protrusion and two second arc-shaped positioning protrusions are arranged on the inner side surface of the upper sleeve, two symmetrically arranged positioning notches are arranged on the outer side surface of the upper sleeve, a limiting ring is fixedly sleeved on the outer side surface of the lower sleeve, and two positioning strips are fixedly connected to the upper surface of the limiting ring; the application can form a multiple sealing connection structure between the upper sleeve and the lower sleeve, compared with using an adhesive, the upper sleeve can be conveniently replaced while ensuring good connection and sealing between the upper sleeve and the lower sleeve, and the upper sleeve can be prevented from rotating under the action of external force through cooperation of the two positioning notches and the two positioning strips, so that the stability of the connection between the upper sleeve and the lower sleeve is ensured.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and more specifically, to a steering shaft sleeve structure. Background Technology

[0002] Throughout the entire driving process, the steering system is a crucial component ensuring that the vehicle travels in the direction the driver intends. The steering shaft, as an important part of the steering system, plays a decisive role in driving safety when operating normally. The function of the steering shaft is to transmit the steering torque applied by the driver to the steering gear. Its upper part is fixedly connected to the steering wheel, and its lower part is connected to the steering gear. The steering shaft passes through the steering column tube and is supported by bearings and bushings within the tube. Some steering shafts not only possess a certain degree of rigidity but also have energy-absorbing functions, preventing damage. As a key component protecting the steering shaft, the performance of the steering shaft bushing directly affects the service life of the steering shaft and the driving safety of the vehicle. Existing technologies have the following shortcomings in their use:

[0003] Steering shaft bushings typically consist of an upper bushing and a lower bushing. When installing the upper bushing, it is sometimes done by slipping it over the lower bushing and then applying a suitable rubber adhesive to the lower end of the upper bushing to seal the gap between them. However, when the rubber upper bushing needs to be replaced later, the adhesive makes it difficult to remove it from the lower bushing.

[0004] Therefore, a steering shaft sleeve structure is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to address the problem that existing steering shaft sleeves typically consist of an upper sleeve and a lower sleeve. When installing the upper sleeve, in some cases, after the upper sleeve is fitted onto the lower sleeve, a suitable rubber adhesive is applied to the lower end of the upper sleeve to seal the gap between the upper and lower sleeves. However, when it is necessary to replace the rubber upper sleeve later, the adhesive makes it difficult to remove it from the lower sleeve.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A steering shaft sleeve structure is proposed to improve the above-mentioned problems.

[0008] The application is as follows:

[0009] A steering shaft sleeve structure includes a lower sleeve and an upper sleeve fitted onto the lower sleeve. The outer surface of the lower sleeve has a first arc-shaped positioning groove and two second arc-shaped positioning grooves. The inner surface of the upper sleeve has a first arc-shaped positioning protrusion and two second arc-shaped positioning protrusions. The outer surface of the upper sleeve has two symmetrically arranged positioning slots. A limiting ring is fixedly fitted onto the outer surface of the lower sleeve, and two positioning strips are fixedly connected to the upper surface of the limiting ring.

[0010] As a preferred technical solution of this application, the first arc-shaped positioning groove is located between the two second arc-shaped positioning grooves, and the first arc-shaped positioning protrusion is located between the two second arc-shaped positioning protrusions.

[0011] As a preferred technical solution of this application, the depth of the first arc-shaped positioning groove is greater than the depth of the second arc-shaped positioning groove, and the size of the first arc-shaped positioning protrusion is greater than the size of the second arc-shaped positioning protrusion.

[0012] As a preferred technical solution of this application, the first arc-shaped positioning protrusion is located in the first arc-shaped positioning groove, and the two second arc-shaped positioning protrusions are respectively located in the two second arc-shaped positioning grooves.

[0013] As a preferred technical solution of this application, the lower surface of the upper sheath is in contact with the upper surface of the limiting ring, and the two positioning strips are respectively located in two positioning slots.

[0014] As a preferred technical solution of this application, the upper sheath, the first arc-shaped positioning protrusion, and the two second arc-shaped positioning protrusions are integrally formed.

[0015] As a preferred technical solution of this application, a mounting base is fixedly installed on the lower surface of the lower sheath, and mounting holes are provided near the four corners of the mounting base.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. By cooperating with the first arc-shaped positioning groove, the second arc-shaped positioning groove, the first arc-shaped positioning protrusion, and the second arc-shaped positioning protrusion, after the upper sheath is fitted onto the lower sheath, the first arc-shaped positioning protrusion is located in the first arc-shaped positioning groove, and the two second arc-shaped positioning protrusions are respectively located in the two second arc-shaped positioning grooves. This allows a multi-layer sealing connection structure to be formed between the upper and lower sheaths. Compared with the use of adhesive, this ensures the sealing of the connection and facilitates the replacement of the upper sheath later.

[0018] 2. By using two positioning slots and two positioning strips, the upper sheath can be prevented from rotating under external force, ensuring the stability of the connection between the upper and lower sheaths and facilitating practical use.

[0019] 3. By cooperating with the upper sheath and the limiting ring, the sealing between the upper and lower sheaths can be further improved, effectively enhancing the sealing performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a steering shaft sleeve structure provided in this application.

[0021] Figure 2 This is a cross-sectional schematic diagram of the lower and upper sheaths in a steering shaft sheath structure provided in this application.

[0022] Figure 3 This is a top view of the upper sleeve in a steering shaft sleeve structure provided in this application.

[0023] Figure 4 This is a schematic diagram of the mounting base in a steering shaft sleeve structure provided in this application.

[0024] The image shows:

[0025] 1. Lower sheath; 2. Upper sheath; 3. First arc-shaped positioning groove; 4. Second arc-shaped positioning groove; 5. First arc-shaped positioning protrusion; 6. Second arc-shaped positioning protrusion; 7. Positioning slot; 8. Limiting ring; 9. Positioning strip; 10. Mounting base; 11. Mounting hole. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Example:

[0029] like Figure 1-4As shown, this embodiment proposes a steering shaft sleeve structure, including a lower sleeve 1 and an upper sleeve 2 fitted onto the lower sleeve 1. The outer surface of the lower sleeve 1 has a first arc-shaped positioning groove 3 and two second arc-shaped positioning grooves 4. The inner surface of the upper sleeve 2 has a first arc-shaped positioning protrusion 5 and two second arc-shaped positioning protrusions 6. The outer surface of the upper sleeve 2 has two symmetrically arranged positioning slots 7. A limiting ring 8 is fixedly fitted onto the outer surface of the lower sleeve 1. Two positioning strips 9 are fixedly connected to the upper surface of the limiting ring 8. The first arc-shaped positioning... The groove 3 is located between two second arc-shaped positioning grooves 4, the first arc-shaped positioning protrusion 5 is located between two second arc-shaped positioning protrusions 6, the groove depth of the first arc-shaped positioning groove 3 is greater than the groove depth of the second arc-shaped positioning groove 4, the size of the first arc-shaped positioning protrusion 5 is greater than the size of the second arc-shaped positioning protrusion 6, the first arc-shaped positioning protrusion 5 is located in the first arc-shaped positioning groove 3, the two second arc-shaped positioning protrusions 6 are respectively located in the two second arc-shaped positioning grooves 4, the lower surface of the upper sheath 2 is in contact with the upper surface of the limiting ring 8, and the two positioning strips 9 are respectively located in the two positioning grooves 7;

[0030] The upper sheath 2 is made of rubber with a corrugated center, providing excellent deformability. By fitting the upper sheath 2 onto the lower sheath 1, one end face of the upper sheath 2 is aligned with the limiting ring 8, causing the two positioning strips 9 to be positioned within the two positioning slots 7, the first arc-shaped positioning protrusion 5 to be positioned within the first arc-shaped positioning groove 3, and the two second arc-shaped positioning protrusions 6 to be positioned within the two second arc-shaped positioning grooves 4. The first arc-shaped positioning protrusion 5 and the first arc-shaped positioning groove 3, the two second arc-shaped positioning protrusions 6 and the two second arc-shaped positioning grooves 4, and... The upper sheath 2 cooperates with the limiting ring 8 to form a multi-seal connection structure between the upper sheath 2 and the lower sheath 1. Compared with the method of sealing with adhesive, it can ensure good connection and sealing between the upper sheath 2 and the lower sheath 1, and facilitate the replacement of the upper sheath 2 later. The whole does not require the use of rubber adhesive. The two positioning strips 9 cooperate with the two positioning slots 7 to prevent the upper sheath 2 from rotating under external force, ensuring the stability of the connection between the upper sheath 2 and the lower sheath 1, which is beneficial to practical use.

[0031] like Figure 2 As shown, the upper sheath 2, the first arc-shaped positioning protrusion 5, and the two second arc-shaped positioning protrusions 6 are integrally formed.

[0032] One-piece molding can improve the overall integrity of the structure, enable rapid mass production, and improve production efficiency.

[0033] like Figure 1 and Figure 4 As shown, a mounting base 10 is fixedly installed on the lower surface of the lower sheath 1, and mounting holes 11 are provided near the four corners of the mounting base 10;

[0034] By using multiple fixing bolts and multiple mounting holes 11, it is easy to install and fix the mounting base 10 and the lower protective sleeve 1.

[0035] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A steering shaft sleeve structure, comprising a lower sleeve (1) and an upper sleeve (2) sleeved and mounted on the lower sleeve (1), characterized in that, The outer surface of the lower sheath (1) is provided with a first arc-shaped positioning groove (3) and two second arc-shaped positioning grooves (4). The inner surface of the upper sheath (2) is provided with a first arc-shaped positioning protrusion (5) and two second arc-shaped positioning protrusions (6). The outer surface of the upper sheath (2) is provided with two symmetrically arranged positioning slots (7). The outer surface of the lower sheath (1) is fixedly fitted with a limiting ring (8). The upper surface of the limiting ring (8) is fixedly connected with two positioning strips (9).

2. The steering shaft sleeve structure according to claim 1, characterized in that, The first arc-shaped positioning groove (3) is located between the two second arc-shaped positioning grooves (4), and the first arc-shaped positioning protrusion (5) is located between the two second arc-shaped positioning protrusions (6).

3. The steering shaft sleeve structure according to claim 1, characterized in that, The depth of the first arc-shaped positioning groove (3) is greater than the depth of the second arc-shaped positioning groove (4), and the size of the first arc-shaped positioning protrusion (5) is greater than the size of the second arc-shaped positioning protrusion (6).

4. The steering shaft sleeve structure according to claim 1, characterized in that, The first arc-shaped positioning protrusion (5) is located in the first arc-shaped positioning groove (3), and the two second arc-shaped positioning protrusions (6) are located in the two second arc-shaped positioning grooves (4) respectively.

5. A steering shaft sleeve structure according to claim 1, characterized in that, The lower surface of the upper sheath (2) is in contact with the upper surface of the limiting ring (8), and the two positioning strips (9) are located in the two positioning slots (7) respectively.

6. The steering shaft sleeve structure according to claim 1, characterized in that, The upper sheath (2), the first arc-shaped positioning protrusion (5), and the two second arc-shaped positioning protrusions (6) are integrally formed.

7. The steering shaft sleeve structure according to claim 1, characterized in that, The lower sheath (1) is fixedly mounted with a mounting base (10), and the mounting base (10) has mounting holes (11) near the four corners.

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