Torsion bar stock of automobile steering system

Abstract

The utility model relates to the technical field of torsion bars, and discloses an automobile steering system torsion bar stock which comprises a bar stock body, the top of the bar stock body is fixedly connected with a spline assembly, and the bottom of the bar stock body is fixedly connected with a connecting assembly. A sensor penetrates through the axis of the inner side of the bar body, the axis of the inner side of the spline assembly and the axis of the inner side of the connecting assembly, a surface coating is attached to the surface of the outer side of the bar body, and a connecting coating is arranged between the top side of the bar body and the bottom side of the spline assembly. The spline assembly and the connecting assembly on the structure are stably connected with the bar body, efficient torque transmission and stable connection can be achieved, the sensor at the axis can monitor working parameters in real time to assist precise control and protection, the surface coating protects the bar body, the anti-loosening coating in the connecting coating prevents loosening, and the sealing coating prevents impurity invasion. The service life is jointly prolonged, and the reliability and durability of a steering system are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to torsion bar technical field, concretely is a kind of automobile steering system torsion bar bar stock. BACKGROUND

[0002] In automobile steering system, torsion bar bar stock plays a vital role.

[0003] Due to frequent steering operation in the process of automobile driving, torsion bar needs to bear complex stress conditions, including torsional force when steering and additional force caused by vibration when vehicle driving on bumpy road, etc., if efficient and stable connection cannot be realized between torsion bar and connecting component, not only the working efficiency of steering system will be reduced, but also steering precision may be reduced, affecting the control experience of driver, and even causing safety hazard after long-term use, some old torsion bar connecting structure is prone to aggravate wear at connecting part after long-term stress, and then cause unstable torque transmission, so that abnormal play occurs when steering;

[0004] And lack effective state monitoring means, cannot obtain torsion bar working parameter in real time to optimize steering system. In the aspect of protection, external harsh environment is easy to cause torsion bar surface corrosion, connecting part is easy to be invaded by impurities, aggravate wear and corrosion, and the friction and wear of torsion bar itself in use also lack protection, affect performance and increase cost. UTILITY MODEL CONTENT

[0005] The utility model aims at: for solving the problem that automobile steering torsion bar stress is complex, connection is unstable and can reduce efficiency, precision and produce safety hazard, old structure has wear problem, and lack monitoring means, and the problem that protection is insufficient and easy to corrode, wear, affect performance and cost, the utility model provides a kind of automobile steering system torsion bar bar stock.

[0006] The utility model discloses a kind of automobile steering system torsion bar bar stock to achieve the above-mentioned purposes specifically using the following technical solutions:

[0007] A kind of automobile steering system torsion bar bar stock, including bar stock main body, the top of the bar stock main body is fixedly connected with spline assembly, the bottom of the bar stock main body is fixedly connected with connecting assembly, the inside shaft center of the bar stock main body, the spline assembly and the connecting assembly is penetrated with sensor, the outside surface of the bar stock main body is attached with surface coating, connection coating is arranged between the top side of the bar stock main body and the bottom side of the spline assembly, the connection coating includes anti-loosening coating and sealing coating, the anti-loosening coating, the sealing coating is attached to the connecting surface between the bar stock main body, the spline assembly.

[0008] Further, the spline assembly comprises a main shaft and a spline tooth, the bottom side of the main shaft and the spline tooth is fixedly connected to the top side of the bar body, and the outer top end of the sensor penetrates the inner shaft center of the main shaft, so that torque can be effectively transmitted and the power can be stably transmitted in the axial direction.

[0009] Further, the inner end of the spline tooth is arranged at the outer side of the main shaft, and the spline tooth and the matched part in the steering system are matched through spline connection.

[0010] Further, the connecting assembly comprises a connecting body and a threaded tooth, the bottom outer side of the sensor penetrates the inner shaft center of the connecting body, and the torsion bar and other components are fixed through threaded connection.

[0011] Further, the threaded tooth is arranged at the side wall of the connecting body, so that the installation and disassembly are facilitated.

[0012] Further, the surface coating comprises a corrosion-resistant coating and a wear-resistant coating, the corrosion-resistant coating and the wear-resistant coating cover the outer surface of the bar body, so that the bar body is prevented from rusting and corroding, and the wear caused by friction is reduced.

[0013] Further, a heat insulation coating is coated between the outer side of the sensor and the inner side of the bar body, so that the performance of the sensor is prevented from being reduced or damaged due to high temperature.

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

[0015] The automobile steering system torsion bar is stably connected with the bar body through the spline assembly and the connecting assembly on the structure, efficient torque transmission and stable connection can be realized, the sensor at the shaft center can monitor the working parameters in real time to assist precise control, in the protection aspect, the surface coating protects the bar body, the anti-loosening coating in the connecting coating prevents loosening, and the sealing coating prevents impurities from invading, so that the service life is prolonged, the reliability and durability of the steering system are enhanced, the steering system can stably operate under complex working conditions, the probability of failure is reduced, the driving safety and comfort are improved, and strong support is provided for long-term reliable use of the automobile steering system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an overall structure external structure schematic view of the utility model;

[0017] Figure 2 It is a structure connection relation schematic view between the spline assembly and the sensor of the utility model;

[0018] Figure 3The utility model discloses a position relation schematic drawing of the bar material main body and sensor and heat insulation coating.

[0019] Figure 4 The utility model discloses a structure connection relation schematic drawing between the connecting assembly and sensor.

[0020] Figure 5 The utility model discloses a position relation schematic drawing of the outer side surface coating of bar material main body.

[0021] Figure 6 The utility model discloses a connecting coating position relation schematic drawing between the spline assembly and bar material main body.

[0022] In the figure: 1, bar material main body;2, spline assembly;21, main shaft;22, key tooth;3, connecting assembly;31, connecting main body;32, screw tooth;4, sensor;41, heat insulation coating;5, surface coating;51, anticorrosive coating;52, wear -resisting coating;6, connecting coating;61, anti -looseness coating;62, seal coating. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and apparently, 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 the ordinary skill in the art without creative labor belong to the range of the utility model protection. Embodiment one:

[0024] As shown in Figures 1-6 A kind of automobile steering system torsion bar bar material, including bar material main body 1, the top of bar material main body 1 is fixedly connected with spline assembly 2, the bottom of bar material main body 1 is fixedly connected with connecting assembly 3, the inside shaft center of bar material main body 1, spline assembly 2 and connecting assembly 3 is penetrated with sensor 4, heat insulation coating 41 is coated between the outside of sensor 4 and the inside of bar material main body 1, surface coating 5 is attached to the outside surface of bar material main body 1, connecting coating 6 is arranged between the top side of bar material main body 1 and the bottom side of spline assembly 2.

[0025] As shown in Figures 1-2 Spline assembly 2 includes main shaft 21 and key tooth 22, the bottom side of main shaft 21, key tooth 22 is fixedly connected to the top side of bar material main body 1, the outside top end of sensor 4 is penetrated in the inside shaft center of main shaft 21, the inside end of key tooth 22 is set at the outside of main shaft 21, key tooth 22 and the component in steering system that is cooperated with it are cooperated by spline connection mode, and this connection mode can effectively transmit torque, guarantee the stable transmission of power in axial direction;

[0026] As shown in Figure 1 andFigure 4 As shown, the connecting assembly 3 includes a connecting body 31 and a threaded tooth 32, the bottom end of the sensor 4 is penetrated through the inner shaft of the connecting body 31, and the threaded tooth 32 is arranged on the side wall of the connecting body 31. The threaded connection is used to fix the torsion bar and other components, which is convenient for installation and disassembly. Embodiment two:

[0027] As shown, the surface coating 5 includes a corrosion-resistant coating 51 and a wear-resistant coating 52, which are attached to the outer surface of the bar body 1. The corrosion-resistant coating 51 can form a protective film to prevent corrosive substances from contacting the metal surface of the bar body 1, thereby preventing rust and corrosion of the bar body 1 and prolonging the service life of the torsion bar. The wear-resistant coating 52 can improve the hardness and wear resistance of the surface of the bar body 1, reducing wear caused by friction. Figure 5 As shown, the connecting coating 6 includes a locking coating 61 and a sealing coating 62, which are attached to the connecting surface between the bar body 1 and the spline assembly 2. The locking coating 61 can increase the friction between the connecting surfaces to prevent the spline assembly 2 from loosening from the bar body 1. The sealing coating 62 mainly plays a sealing role to prevent dust, moisture, and other impurities from entering the connecting surface.

[0028] Figure 6 As shown, the bar body 1 is used as the main bearing structure, and the spline assembly 2 at the top and the connecting assembly 3 at the bottom are used to connect and transmit power to other components in the steering system. The sensor 4 penetrating the shaft centers of the bar body 1, the spline assembly 2, and the connecting assembly 3 is used to monitor the related parameters such as stress and torsion angle during the operation of the torsion bar.

[0029] As shown, the bar body 1 is used as the main bearing structure, and the spline assembly 2 at the top and the connecting assembly 3 at the bottom are used to connect and transmit power to other components in the steering system. The sensor 4 penetrating the shaft centers of the bar body 1, the spline assembly 2, and the connecting assembly 3 is used to monitor the related parameters such as stress and torsion angle during the operation of the torsion bar. Figures 1-6 When the torsion bar is working, the key teeth 22 are connected to the components in the steering system through the spline connection. This connection method can effectively transmit torque and ensure stable transmission of power in the axial direction. The spline connection has the characteristic of multiple key teeth being stressed at the same time, which can better withstand large torsional and shear forces compared to other connection methods, making the steering operation more stable and reliable.

[0030] The threaded tooth 32 is arranged on the side wall of the connecting body 31, and the threaded connection is used to fix the torsion bar and other components, which is convenient for installation and disassembly.

[0031]

[0032] ​​The heat insulation coating 41 can effectively block the heat transfer to the sensor 4, so that the sensor 4 works in a relatively stable temperature environment, which helps to ensure the accuracy and reliability of the measurement data of the sensor 4, prevents the performance degradation or damage of the sensor 4 due to high temperature, and thus guarantees the accuracy of the working state monitoring of the torsion bar;

[0033] The corrosion-resistant coating 51 can form a protective film to prevent the corrosive substances from contacting the metal surface of the bar body 1, thereby preventing the bar body 1 from rusting and corroding, prolonging the service life of the torsion bar. During the steering process, the torsion bar will continuously move relative to the surrounding components or be subjected to friction. The wear-resistant coating 52 can improve the hardness and wear resistance of the surface of the bar body 1, reduce the wear caused by friction, maintain the dimensional accuracy and mechanical properties of the torsion bar, and ensure the normal operation of the steering system.

[0034] The anti-loose coating 61 can increase the friction between the connecting surfaces to prevent the loosening between the spline assembly 2 and the bar body 1, ensure the reliability of the connection, and thus ensure the stability of the torque transmission. The sealing coating 62 mainly plays a sealing role to prevent dust, moisture and other impurities from entering the connecting surface.

Claims

1. A torsion bar bar stock for an automobile steering system, comprising a bar stock body (1), characterized in that: The top of the bar body (1) is fixedly connected to a spline assembly (2), the bottom of the bar body (1) is fixedly connected to a connecting assembly (3), a sensor (4) is passed through the inner axis of the bar body (1), the spline assembly (2) and the connecting assembly (3), a surface coating (5) is attached to the outer surface of the bar body (1), and a connecting coating (6) is provided between the top side of the bar body (1) and the bottom side of the spline assembly (2); The connection coating (6) comprises an anti-loosening coating (61) and a sealing coating (62), and the anti-loosening coating (61) and the sealing coating (62) are attached to the connection surface between the bar body (1) and the spline assembly (2).

2. The automobile steering system torsion bar stock according to claim 1, characterized in that: The spline assembly (2) comprises a main shaft (21) and key teeth (22), the bottom sides of the main shaft (21) and the key teeth (22) are fixedly connected to the top side of the bar body (1), and the outer top end of the sensor (4) passes through the inner axis of the main shaft (21).

3. The automobile steering system torsion bar stock according to claim 2, characterized in that: The inner end of the key tooth (22) is arranged on the outer side of the main shaft (21).

4. The automobile steering system torsion bar stock according to claim 1, characterized in that: The connecting assembly (3) comprises a connecting body (31) and threaded teeth (32), and the outer side of the bottom end of the sensor (4) passes through the inner axis of the connecting body (31).

5. The automobile steering system torsion bar stock according to claim 4, characterized in that: The thread teeth (32) are arranged on the side wall of the connecting body (31).

6. The automobile steering system torsion bar stock according to claim 1, characterized in that: The surface coating (5) comprises an anti-corrosion coating (51) and a wear-resistant coating (52), and the anti-corrosion coating (51) and the wear-resistant coating (52) are covered on the outer surface of the bar body (1).

7. The automobile steering system torsion bar stock according to claim 1, characterized in that: A heat-insulating coating (41) is applied between the outer side of the sensor (4) and the inner side of the bar body (1).

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