Steering transmission mechanism

Abstract

The utility model provides a steering transmission mechanism, and belongs to the technical field of machinery. The problems that in the prior art, workers need to detach the whole steering column from a shell of the steering column, great inconvenience is caused, lubrication needs to be added to a bearing in the steering column at regular intervals, and the whole steering column needs to be detached are solved. The steering transmission mechanism comprises a shell and a steering column arranged in the shell, the shell is divided into an upper shell body and a lower shell body, rolling bearings are arranged between the upper shell body and the steering column and between the lower shell body and the steering column, an open groove is formed in the lower shell body, a connecting part is arranged on the upper shell body, and a positioning assembly is arranged on the lower shell body. The positioning assembly is composed of a positioning rod, a sliding part and a reset spring, the upper shell is provided with a positioning hole matched with the positioning rod, the lower end of the lower shell is provided with an installation groove for installation of the positioning assembly, and the sliding part, the positioning rod and the reset spring are all arranged in the installation groove. The utility model has the advantages of being convenient to install and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, and relates to a transmission mechanism, in particular to a steering transmission mechanism. Background Art

[0002] In a steering transmission mechanism, a steering column is used to connect a steering wheel and a steering reducer, so as to transmit the force applied by a driver to the steering wheel to the steering reducer, and then transmit it to a wheel to achieve steering.

[0003] Under the long-term working condition of the steering column, internal parts of the steering column will be damaged to a certain extent. Since the housing of the steering column is integrally formed, it is extremely inconvenient for workers to disassemble the entire steering column from the housing of the steering column, and the bearings inside it need to be lubricated regularly, and the entire steering column also needs to be disassembled. Summary of the Invention

[0004] The purpose of the utility model is to provide a steering transmission mechanism which is convenient for installation and maintenance in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A steering transmission mechanism includes a housing and a steering column arranged in the housing. One end of the steering column is arranged in the housing, and the other end of the steering column extends out of the housing and is connected to an external rack. It is characterized in that the housing is divided into an upper housing and a lower housing. Rolling bearings are arranged between the upper housing and the lower housing and the steering column. A slot is opened on the lower housing, a connecting part matching the slot is arranged on the upper housing, a positioning component for positioning the upper housing is arranged on the lower housing, the positioning component consists of a positioning rod, a sliding part and a return spring. A positioning hole matching the positioning rod is opened on the upper housing, an installation slot for installing the positioning component is opened at the lower end of the lower housing, the sliding part, the positioning rod and the return spring are all arranged in the installation slot. One end of the positioning rod extends out of the lower housing and is connected with a lifting part, and the other end of the positioning rod extends out of the installation slot and is connected to the positioning hole of the lower housing. The upper housing is detachably fixed to the lower housing by the matching of the positioning rod and the positioning hole.

[0006] In the above-mentioned steering transmission mechanism, one end of the return spring is connected to the lower housing, the other end of the return spring is connected to the sliding part, and the sliding part slides in the installation slot under the action of the return spring.

[0007] In the above-mentioned steering transmission mechanism, the upper housing and the lower housing are provided with protruding parts for installing the rolling bearings.

[0008] In the above-mentioned steering transmission mechanism, an external tooth for external meshing is arranged at the upper end of the steering column.

[0009] Compared with the prior art, the steering transmission mechanism is provided with a split housing structure, and the upper housing is fixed to the lower housing through a positioning component, which is convenient for the staff to repair the steering column and add lubrication to the bearing, improving the stability of the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present utility model.

[0011] Figure 2 is a schematic cross-sectional structural diagram of the present utility model.

[0012] Figure 3 is a schematic diagram of a partial structure of the present utility model.

[0013] In the figure, 1, steering column; 2, upper housing; 3, lower housing; 4, rolling bearing; 5, connecting part; 6, positioning rod; 7, sliding part; 8, return spring; 9, positioning hole; 10, lifting part; 11, convex part; 12, external teeth. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following are specific embodiments of the present utility model and in conjunction with the accompanying drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0015] As Figure 1 , Figure 2 , Figure 3 shown, the steering transmission mechanism of the present utility model includes a housing and a steering column 1 disposed in the housing. One end of the steering column 1 is disposed in the housing, and the other end of the steering column 1 extends out of the housing and is connected to 12 external teeth. The 12 external teeth are engaged with the external teeth 12 of the steering column 1 to drive the steering column 1 to rotate. The housing is divided into an upper housing 2 and a lower housing 3. Rolling bearings 4 are disposed between the upper housing 2 and the lower housing 3 and the steering column 1. A slot is formed in the lower housing 3. A connecting part 5 matching the slot is disposed on the upper housing 2. A positioning component for positioning the upper housing 2 is disposed on the lower housing 3. The positioning component consists of a positioning rod 6, a sliding part 7 and a return spring 8. A positioning hole 9 matching the positioning rod 6 is formed in the upper housing 2. An installation groove for installing the positioning component is formed at the lower end of the lower housing 3. The sliding part 7, the positioning rod 6 and the return spring 8 are all disposed in the installation groove. One end of the positioning rod 6 extends out of the lower housing 3 and is connected to a lifting part 10. The other end of the positioning rod 6 extends out of the installation groove and is connected to the positioning hole 9 of the lower housing 3. The upper housing 2 is detachably fixed to the lower housing 3 by matching the positioning rod 6 with the positioning hole 9.

[0016] For further details on the disassembly of the housing, by pulling the lifting part 10 extending outside the lower housing 3, the sliding part 7 slides into the installation groove, the return spring 8 is in a compressed state, the positioning rod 6 extending outside the installation groove contracts into the installation groove, and the positioning rod 6 is separated from the positioning hole 9, then the upper housing 2 can be disassembled from the lower housing 3. When the upper housing 2 needs to be installed, by pulling the lifting part 10 extending outside the lower housing 3, the sliding part 7 slides into the installation groove, the return spring 8 is in a compressed state, the positioning rod 6 extending outside the installation groove contracts into the installation groove, the connecting part 5 of the upper housing 2 is engaged with the slot of the lower housing 3, the lifting part 10 is released, the return spring 8 rebounds, and the positioning rod 6 extends into the positioning hole 9 of the upper housing 2 to fix the upper housing 2.

[0017] For further details, one end of the return spring 8 is connected to the lower housing 3, the other end of the return spring 8 is connected to the sliding part 7, and the sliding part 7 slides in the installation groove under the action of the return spring 8.

[0018] For further details, the upper housing 2 and the lower housing 3 are provided with convex parts 11 for installing the rolling bearing 4.

[0019] For further details, the upper end of the steering column 1 is provided with an external tooth 12 for external engagement.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0021] Although terms such as the steering column 1, upper housing 2, lower housing 3, rolling bearing 4, connecting part 5, positioning rod 6, sliding part 7, return spring 8, positioning hole 9, lifting part 10, convex part 11, external tooth 12, etc. in the figure are used more in this article, the possibility of using other terms is not excluded. Using these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A steering transmission mechanism, comprising a housing and a steering column (1) disposed in the housing, wherein one end of the steering column (1) is disposed in the housing, and the other end of the steering column (1) extends out of the housing and is connected to an external tooth (12), characterized in that: The housing is divided into an upper housing (2) and a lower housing (3). Rolling bearings (4) are arranged between the upper housing (2) and the lower housing (3) and the steering column (1). A slot is provided on the lower housing (3). A connecting portion (5) matching the slot is provided on the upper housing (2). A positioning assembly for positioning the upper housing (2) is provided on the lower housing (3). The positioning assembly comprises a positioning rod (6), a sliding portion (7) and a return spring (8). The upper housing (2) has a connecting portion (5) matching the slot. The lower shell (3) has a mounting groove for mounting the positioning assembly, and the sliding portion (7), the positioning rod (6) and the return spring (8) are all arranged in the mounting groove. One end of the positioning rod (6) extends out of the lower shell (3) and is connected to the lifting portion (10). The other end of the positioning rod (6) extends out of the mounting groove and is connected to the positioning hole (9) of the lower shell (3). The positioning rod (6) is matched with the positioning hole (9), so that the upper shell (2) can be detachably fixed to the lower shell (3).

2. A steering transmission mechanism according to claim 1, characterized in that: One end of the return spring (8) is connected to the lower housing (3), and the other end of the return spring (8) is connected to the sliding portion (7). The sliding portion (7) slides in the installation groove under the action of the return spring (8).

3. A steering transmission mechanism according to claim 1, characterized in that: The upper shell (2) and the lower shell (3) are provided with raised portions (11) for mounting the rolling bearing (4).

4. A steering transmission mechanism according to claim 1, characterized in that: The upper end portion of the steering column (1) is provided with external teeth (12) for external meshing.

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