A steering gear for a vehicle

Abstract

The utility model discloses an adjustable steering force's car direction machine, including transmission subassembly, still including extension rod subassembly, transmission subassembly's both ends all are provided with extension rod subassembly, transmission subassembly includes steering drive casing, the inside of steering drive casing is provided with the pinion shaft, the lower extreme of pinion shaft is provided with bevel gear drive wheel, and bevel gear drive wheel and pinion shaft tooth meshing transmission connection, the upper extreme of pinion shaft is provided with spring cover, and spring cover is along the upper end surface of pinion shaft and is slidably arranged, the inside of spring cover is provided with spring, the upper extreme of spring is provided with hexagonal cover, the utility model discloses through hexagonal cover and the thread locking mechanism of steering drive casing, the spring is compressed downward, thereby the friction between spring cover and pinion shaft increases, and further realizes the strength when bevel gear drive wheel drives pinion shaft and moves along the inside horizontal of steering drive casing and adjusts, and further realizes the damping when car direction machine turns to adjust, thereby realizes the adjustment function of steering force.

Description

Technical Field

[0001] This utility model relates to the field of automotive steering technology, and in particular to an adjustable steering force automotive steering system. Background Technology

[0002] The technological development of automotive steering systems has gone through several stages. Early systems were purely mechanical, relying entirely on the driver's strength to steer, which was quite strenuous. With technological advancements, hydraulic power steering systems emerged, using fluid pressure to assist steering and reducing the driver's burden to some extent. However, the problem of strenuous steering still existed at low speeds. Later, electronic steering systems gradually became widespread, using electric motors to provide steering assistance, making steering easier. Today, driven by the development of new energy vehicles, steering systems are evolving towards greater intelligence and electrification, with steer-by-wire technology becoming a new development trend.

[0003] Different drivers have different needs for steering effort, and the driving conditions of vehicles are complex and diverse, such as different vehicle speeds, road conditions and vehicle loads, all of which require corresponding adjustments to steering effort. However, the damping of the steering gear is affected by a variety of factors, and it is not easy to achieve precise adjustment to adapt to various situations. Moreover, electronic damping adjustment is not as stable as mechanical structure adjustment and it is difficult to achieve the ideal adjustment effect. Utility Model Content

[0004] In order to overcome the problem that the difficulty in adjusting the steering force of existing automotive steering systems is due to the difficulty in adjusting the damping, this utility model provides an adjustable steering force automotive steering system.

[0005] The technical solution is as follows: An adjustable steering force automotive steering gear includes a transmission assembly and an extension rod assembly; extension rod assemblies are provided at both ends of the transmission assembly; the transmission assembly includes a steering transmission housing; a gear shaft is provided inside the steering transmission housing; a bevel gear transmission wheel is provided at the lower end of the gear shaft, and the bevel gear transmission wheel is meshed with the gear shaft for transmission; a spring sleeve is provided at the upper end of the gear shaft, and the spring sleeve is slidably disposed along the upper end face of the gear shaft; a spring is provided inside the spring sleeve; a hexagonal cap is provided at the upper end of the spring.

[0006] Furthermore, the lower end face of the gear shaft is a meshing transmission rack structure, and the meshing transmission rack structure is integrally formed with the gear shaft.

[0007] Furthermore, the lower end face of the spring sleeve is in frictional contact with the upper end face of the gear shaft, forming a sliding connection; the hexagonal cap presses the spring down and is threadedly connected to the steering transmission housing.

[0008] Furthermore, the bevel gear drive wheel is connected to the drive shaft of the car steering wheel.

[0009] Furthermore, both ends of the gear shaft are equipped with bullseye bearings, and the bullseye bearings are fixedly connected to the gear shaft.

[0010] Furthermore, the bullseye bearing has a ball bearing inside, and the ball bearing is rotatably connected to the bullseye bearing.

[0011] Furthermore, an extension rod is provided at one end of the ball shaft, and the extension rod is fixedly connected to the ball shaft.

[0012] The beneficial effects are as follows: In the operating system of the automotive steering gear, the threaded locking mechanism between the hexagonal cover and the steering transmission housing plays a key role. When this threaded locking mechanism is operated, it directly exerts downward pressure on the spring, causing the spring to compress and deform. As the spring is compressed, its force on the disc spring sleeve gradually increases, which in turn increases the friction between the disc spring sleeve and the gear shaft. This change in friction directly affects the process of the bevel gear drive wheel driving the gear shaft. Specifically, when the bevel gear drive wheel drives the gear shaft to move horizontally along the inside of the steering transmission housing, the magnitude of the aforementioned friction determines the strength of the force required for this adjustment process. Furthermore, the change in the force required to move the gear shaft directly translates into the damping experienced by the automotive steering gear during steering adjustment. Ultimately, through this series of mechanical transmissions and changes, the function of adjusting the steering force of the vehicle is realized, allowing the driver to obtain a suitable steering feel according to different driving needs and road conditions.

[0013] With the addition of an extension rod, the steering gear extension rod is a key connecting component of the steering system. Its main function is to adapt to the structural layout of different vehicle models, fill spatial gaps, and ensure that steering force is efficiently transmitted from the steering wheel to the steering gear. It needs to have sufficient rigidity and strength to reduce deformation during transmission and avoid steering play or handling delay. Some also have telescopic or universal joint structures to adapt to chassis displacement during vehicle dynamic driving. At the same time, as a modular component, it can be adjusted to adapt to different vehicle models, reducing research and development and manufacturing costs. It is an important auxiliary structure to ensure steering accuracy and reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of this utility model;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the present invention.

[0017] Figure 4 This is a three-dimensional schematic diagram of the internal structure of the steering transmission housing of this utility model;

[0018] Figure 5 This is a cross-sectional perspective view of the steering transmission housing of this utility model.

[0019] In the attached figures, the following are the reference numerals: 1. Transmission assembly; 2. Extension rod assembly; 101. Steering transmission housing; 102. Gear shaft; 103. Bevel gear transmission wheel; 104. Hexagonal cap; 105. Spring; 106. Spring sleeve; 201. Bullseye bearing; 202. Ball shaft; 203. Extension rod. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figures 1-5 As shown, an adjustable steering force automotive steering gear includes a transmission assembly 1 and an extension rod assembly 2; both ends of the transmission assembly 1 are provided with extension rod assemblies 2; the transmission assembly 1 includes a steering transmission housing 101; a gear shaft 102 is provided inside the steering transmission housing 101; a bevel gear transmission wheel 103 is provided at the lower end of the gear shaft 102, and the bevel gear transmission wheel 103 is meshed with the gear shaft 102 for transmission; a spring sleeve 106 is provided at the upper end of the gear shaft 102, and the spring sleeve 106 is slidably disposed along the upper end surface of the gear shaft 102; a spring 105 is provided inside the spring sleeve 106; a hexagonal cap 104 is provided at the upper end of the spring 105.

[0023] The lower end face of the gear shaft 102 is a meshing transmission rack structure, and the meshing transmission rack structure is integrally formed with the gear shaft 102.

[0024] The lower end face of the spring sleeve 106 is in frictional contact with the upper end face of the gear shaft 102 and is slidably connected; the hexagonal cover 104 presses down the spring 105 and is threadedly connected to the steering transmission housing 101.

[0025] The bevel gear drive wheel 103 is connected to the drive shaft of the car steering wheel.

[0026] Both ends of the gear shaft 102 are provided with bullseye bearings 201, and the bullseye bearings 201 are fixedly connected to the gear shaft 102.

[0027] In the operating system of the automotive steering gear, the threaded locking mechanism between the hexagonal cover 104 and the steering transmission housing 101 plays a crucial role. When this threaded locking mechanism is operated, it directly exerts downward pressure on the spring 105, causing the spring 105 to compress and deform. As the spring 105 compresses, its force on the disc spring sleeve 106 gradually increases, which in turn increases the friction between the disc spring sleeve 106 and the gear shaft 102. This change in friction directly affects the process of the bevel gear transmission wheel 103 driving the gear shaft 102. Specifically, when the bevel gear transmission wheel 103 drives the gear shaft 102 to move horizontally along the interior of the steering transmission housing 101, the magnitude of the aforementioned friction determines the strength of the force required for this adjustment process. Furthermore, the change in the force required to move the gear shaft 102 directly translates into the damping experienced by the automotive steering gear during steering adjustment. Ultimately, through this series of mechanical transmissions and changes, the steering force adjustment function of the vehicle is realized, allowing the driver to obtain a suitable steering feel according to different driving needs and road conditions.

[0028] Example 2

[0029] Based on Example 1, such as Figures 1-5 As shown, a ball bearing 202 is provided inside the bullseye bearing 201, and the ball bearing 202 is rotatably connected to the bullseye bearing 201.

[0030] An extension rod 203 is provided at one end of the ball shaft 202, and the extension rod 203 is fixedly connected to the ball shaft 202.

[0031] The steering extension rod 203 is a key connecting component of the steering system. Its main function is to adapt to the structural layout of different vehicle models, fill spatial gaps, and ensure that steering force is efficiently transmitted from the steering wheel to the steering gear. It needs to have sufficient rigidity and strength to reduce deformation during transmission and avoid steering play or handling delay. Some models also have telescopic or universal joint structures to adapt to chassis displacement during vehicle dynamic driving. At the same time, as a modular component, it can be adjusted to adapt to different vehicle models, reducing research and development and manufacturing costs. It is an important auxiliary structure to ensure steering accuracy and reliability.

Claims

1. An adjustable steering force automotive steering gear, comprising a transmission assembly (1), characterized in that: It also includes an extension rod assembly (2); both ends of the transmission assembly (1) are provided with extension rod assemblies (2); the transmission assembly (1) includes a steering transmission housing (101); a gear shaft (102) is provided inside the steering transmission housing (101); a bevel gear transmission wheel (103) is provided at the lower end of the gear shaft (102), and the bevel gear transmission wheel (103) is meshed with the gear shaft (102) for transmission; a spring sleeve (106) is provided at the upper end of the gear shaft (102), and the spring sleeve (106) is slidably provided along the upper end face of the gear shaft (102); a spring (105) is provided inside the spring sleeve (106); a hexagonal cap (104) is provided at the upper end of the spring (105).

2. The adjustable steering force automotive steering gear according to claim 1, characterized in that: The lower end face of the gear shaft (102) is a meshing transmission rack structure, and the meshing transmission rack structure is integrally formed with the gear shaft (102).

3. The adjustable steering force automotive steering gear according to claim 1, characterized in that: The lower end face of the spring sleeve (106) is in frictional contact with the upper end face of the gear shaft (102) in a sliding connection; the hexagonal cap (104) presses down the spring (105) and is threadedly connected to the steering transmission housing (101).

4. The adjustable steering force automotive steering gear according to claim 1, characterized in that: The bevel gear drive wheel (103) is connected to the drive shaft of the car steering wheel.

5. The adjustable steering force automotive steering gear according to claim 1, characterized in that: Both ends of the gear shaft (102) are provided with bullseye bearings (201), and the bullseye bearings (201) are fixedly connected to the gear shaft (102).

6. The adjustable steering force automotive steering gear according to claim 5, characterized in that: The bullseye bearing (201) has a ball shaft (202) inside, and the ball shaft (202) is rotatably connected to the bullseye bearing (201).

7. The adjustable steering force automotive steering gear according to claim 6, characterized in that: An extension rod (203) is provided at one end of the ball shaft (202), and the extension rod (203) is fixedly connected to the ball shaft (202).

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