Steering gear shaft of automobile

Abstract

The utility model relates to the technical field of automobile parts, in particular to an automobile steering gear shaft which comprises a steering shaft body and a protection assembly, the steering shaft body comprises a main shaft, an auxiliary shaft, a first connecting groove and a second connecting groove, the auxiliary shaft is arranged below the main shaft, and the first connecting groove and the second connecting groove are formed in the steering shaft body. The two steering gear shafts are located above the main shaft and below the auxiliary shaft respectively, clear and matched connection positions are provided for external connection parts, and compared with a traditional steering gear shaft, the convenience of connection with the external connection parts is greatly improved. A protection assembly is arranged at the transition position of the main shaft and the auxiliary shaft and is composed of a conical sleeve and a fastener. An opening in the lower portion of the conical sleeve is large, the transition area of the main shaft and the auxiliary shaft can be well covered, dust, impurities and the like are prevented from entering, and abrasion aggravation caused by impurity accumulation is avoided. And meanwhile, the part is buffered and protected, the damage to the transition part of the shaft body caused by external force impact or vibration is reduced, and the service life of the steering gear shaft is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, specifically is automobile direction machine axle. BACKGROUND

[0002] The automobile direction machine axle is a key component in the automobile steering system, and it is like the "nerve conduction bundle" of the human body, transmits power and motion between the driver's steering wheel control and the wheel steering action, and plays a vital role in the safety, controllability and comfort of vehicle driving.

[0003] The existing automobile direction machine axle is inconvenient to connect with external components, and there is no protective device for the transition, which is inconvenient to use. UTILITY MODEL CONTENT

[0004] TECHNICAL PROBLEM

[0005] In view of the deficiencies of the prior art, the utility model provides an automobile direction machine axle.

[0006] (Two) technical scheme

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: the automobile direction machine axle, including direction axle body and protection assembly, the direction axle body includes main shaft, auxiliary shaft, first connecting groove and second connecting groove, the main shaft below is provided with the auxiliary shaft, the main shaft above is provided with first connecting groove, the auxiliary shaft below is provided with second connecting groove, the main shaft outer diameter is greater than the auxiliary shaft, the main shaft and auxiliary shaft concentric circle arrangement, the auxiliary shaft above close to the main shaft one end still is provided with protection assembly.

[0008] In order to provide protection to the structure transition, the utility model improves that the auxiliary shaft is close to the main shaft one end and is provided with the clamping groove, the protection assembly includes the conical sleeve and the fastener, the conical sleeve lower part opening is larger, the conical sleeve upper part is connected with the clamping groove, the auxiliary shaft still is provided with the fastener for fixing the conical sleeve.

[0009] Preferably, the fastener includes external thread and pipe sleeve, the auxiliary shaft upper part outside is provided with the external thread, the auxiliary shaft still is provided with pipe sleeve, and the pipe sleeve is connected with the external thread by screw thread.

[0010] In order to facilitate the driving pipe sleeve, the utility model improves that the pipe sleeve outside is still provided with several groups of friction lines.

[0011] Preferably, the conical sleeve has elasticity.

[0012] In order to facilitate butt joint positioning, the utility model improves that the main shaft upper part is still provided with a notch, and the notch is arranged on the periphery of the first connecting groove.

[0013] (Three) beneficial effects

[0014] Compared with the prior art, the automobile steering shaft has the following beneficial effects:

[0015] The automobile steering shaft, the first connecting groove and the second connecting groove arranged on the direction shaft body are respectively located above the main shaft and below the auxiliary shaft, which provides clear and adaptive connecting positions for external components, greatly improving the convenience of connecting with external components compared with the traditional steering shaft.

[0016] The protective assembly is arranged at the transition of the main shaft and the auxiliary shaft and is composed of a conical sleeve and a fastener. The lower part of the conical sleeve has a larger opening, which can better cover the transition area of the main shaft and the auxiliary shaft, prevent dust and impurities from entering, and avoid the aggravation of wear caused by impurity accumulation. At the same time, the part plays a buffering protection role, reduces the damage to the transition of the shaft body caused by external impact or vibration, and prolongs the service life of the steering shaft. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a bottom view of the structure of the utility model;

[0018] Figure 2 is a front view of the structure of the utility model;

[0019] Figure 3 is an exploded view of the structure of the utility model;

[0020] Figure 4 is a structure Figure 3 of the utility model.

[0021] In the figure: 1, main shaft; 2, auxiliary shaft; 3, first connecting groove; 4, second connecting groove; 5, clamping groove; 6, external thread; 7, pipe sleeve; 8, friction pattern; 9, notch; 10, conical sleeve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-4The automobile steering shaft comprises a steering shaft body and a protection assembly, the steering shaft body comprises a main shaft 1, an auxiliary shaft 2, a first connecting groove 3 and a second connecting groove 4, the auxiliary shaft 2 is arranged below the main shaft 1, the first connecting groove 3 is arranged above the main shaft 1, the second connecting groove 4 is arranged below the auxiliary shaft 2, the outer diameter of the main shaft 1 is larger than that of the auxiliary shaft 2, the main shaft 1 and the auxiliary shaft 2 are arranged in concentric circles, and the protection assembly is further arranged above the auxiliary shaft 2 and close to one end of the main shaft 1.

[0024] The first connecting groove 3 arranged above the main shaft 1 of the steering shaft body provides a specific position for connecting with an upper external component such as a steering wheel. When the steering wheel is installed, the corresponding connecting structure (such as a connecting sleeve with a spline) on the steering wheel can be directly matched with the first connecting groove 3. Since the shape and size of the first connecting groove 3 are matched with the connecting structure of the external component, the butt joint of the two can be quickly realized, and through further fixing operation (such as bolt fastening or other connection methods), the steering wheel is stably connected with the main shaft 1, so that when the driver rotates the steering wheel, the torque can be effectively transmitted to the main shaft 1;

[0025] The second connecting groove 4 below the auxiliary shaft 2 is used for connecting with a lower external component such as a steering transmission mechanism;

[0026] The notch 9 on the upper part of the main shaft 1 and located on the side of the first connecting groove 3 plays a positioning role when connecting with the external component. Taking the steering wheel as an example, the specific protrusion or mark on the connecting end of the steering wheel can be aligned with the notch 9, so as to help the operator quickly determine the installation angle of the steering wheel during the installation process, and ensure that the installation position is accurate. This not only improves the installation efficiency, but also ensures that the steering wheel and the main shaft 1 maintain the correct steering angle corresponding relationship after being connected, thereby improving the driving controllability and safety;

[0027] At the transition between the main shaft 1 and the auxiliary shaft 2, the clamping groove 5 arranged on the end of the auxiliary shaft 2 close to the main shaft 1 is matched with the conical sleeve 10 in the protection assembly, the upper part of the conical sleeve 10 is clamped with the clamping groove 5, and the lower part has a larger opening and can fully cover the transition area between the main shaft 1 and the auxiliary shaft 2. Since the conical sleeve 10 has elasticity, it can closely fit the surface at the transition, forming an effective protective barrier. During vehicle driving, dust and impurities in the external environment are difficult to penetrate the conical sleeve 10 and enter the shaft body transition, thereby avoiding the accumulation of impurities on the surface of the shaft body, which causes the friction between the shaft body and other components to increase, and reducing the occurrence of wear and tear. At the same time, when the vehicle encounters bumpy road or is subjected to external force impact, the elastic conical sleeve 10 can absorb part of the impact force through its own deformation, thereby buffering and protecting the transition of the shaft body, reducing the risk of damage to the shaft body caused by external force impact or vibration, and prolonging the service life of the steering shaft.

[0028] The outer thread 6 arranged on the outer side of the auxiliary shaft 2 and the fastener composed of the pipe sleeve 7 are used to fix the conical sleeve 10.

[0029] According to the requirement, the edges of the direction shaft body are provided with roundness to reduce the stress of the structure transition part and ensure the service life.

[0030] In this document, the term "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, and does not particularly limit the independence or association between other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0031] Unless otherwise defined, the meaning of the technical terms used herein is the same as that generally understood by those skilled in the art to which the present application belongs; the use of related terms herein is only for the purpose of describing specific embodiments, and is not intended to limit the present application.

[0032] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application.

Claims

1. A steering column for a vehicle comprising a steering column body and a guard assembly, characterised in that: The direction axis body includes a main shaft (1), an auxiliary shaft (2), a first connecting groove (3) and a second connecting groove (4), the auxiliary shaft (2) is arranged below the main shaft (1), the first connecting groove (3) is arranged above the main shaft (1), the second connecting groove (4) is arranged below the auxiliary shaft (2), the outer diameter of the main shaft (1) is larger than that of the auxiliary shaft (2), the main shaft (1) and the auxiliary shaft (2) are arranged in concentric circles, and a protection assembly is further arranged above the auxiliary shaft (2) and close to one end of the main shaft (1).

2. The automotive steering gear shaft according to claim 1, characterized in that: The auxiliary shaft (2) is provided with a clamping groove (5) close to one end of the main shaft (1), the protection assembly includes a conical sleeve (10) and a fastener, the lower part of the conical sleeve (10) is larger in opening, the upper part of the conical sleeve (10) is clamped with the clamping groove (5), and the auxiliary shaft (2) is further provided with the fastener for fixing the conical sleeve (10).

3. The automotive steering spindle according to claim 2, characterized in that: The fastener includes an external thread (6) and a pipe sleeve (7), the external thread (6) is arranged on the outer side of the upper part of the auxiliary shaft (2), the pipe sleeve (7) is further sleeved on the auxiliary shaft (2), and the pipe sleeve (7) is in threaded connection with the external thread (6).

4. The automotive steering gear shaft according to claim 3, characterized in that: A plurality of groups of friction lines (8) are further arranged on the outer side of the pipe sleeve (7).

5. The automotive steering spindle according to claim 4, characterized in that: The conical sleeve (10) is elastic.

6. The automotive steering spindle according to claim 5, characterized in that: The upper part of the main shaft (1) is further provided with a notch (9), and the notch (9) is arranged on the circumferential side of the first connecting groove (3).

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