Horizontal installation integrated type electric mechanical recirculating ball steering gear

Abstract

The utility model discloses a horizontally-installed integrated electromechanical recirculating ball steering gear which comprises a steering gear shell, a steering screw, an angle adapter assembly, an upper shell and an input shaft, the angle adapter assembly is arranged on the left side of the steering gear shell, and the steering gear shell is composed of a left shell body and a right shell body. The left shell and the right shell are horizontally and fixedly connected through bolts, angular contact bearings are arranged on the left side and the right side in the left shell respectively, one end of the steering screw is installed in the angular contact bearing on the right side, and the other end of the steering screw penetrates through the angular contact bearing on the left side to be connected with the output end of the angular adapter assembly. An upper shell is arranged at the input end of the angle adapter assembly; the steering gear adopts a horizontal mounting structure, and meanwhile, the angle adapter assembly and the angle torque sensor are deeply integrated, so that the angle torque sensor is closer to a steering wheel, and the accuracy of hand power monitoring of the sensor is improved, so that the control precision of the steering gear is improved, and the driving experience feeling is improved.

Description

Technical Field

[0001] This utility model relates to the field of steering gear technology, specifically a horizontally mounted integrated electromechanical recirculating ball steering gear. Background Technology

[0002] Currently, with the rapid development of urban logistics, commercial vehicles are playing an increasingly important role in urban logistics. However, many commercial vehicles suffer from poor passability due to height limitations. Simultaneously, with changes in commercial vehicle drivers, user demands for a better driving experience are increasing. Because the cabs of current commercial vehicles are relatively high, it is difficult for drivers to enter. Therefore, to address these issues, various OEMs are trying to improve the vehicle's structure and reduce its overall height to enhance passability and driving experience. For example, Chinese patent applications 202320791402.2 and 202010031901.2 both employ a vertical structure, which suffers from the aforementioned technical problems. Currently, commercial vehicle steering systems are mainly installed vertically, which occupies a certain amount of axial space. To reduce vehicle height and meet the needs of commercial vehicle customers, a horizontally mounted integrated electromechanical recirculating ball steering system has been proposed. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a horizontally mounted integrated electromechanical recirculating ball steering gear. This steering gear adopts a horizontal mounting structure, which reduces the axial arrangement space of the product compared with the original steering gear, making it easier to lower the vehicle body and improve the vehicle's passability. At the same time, the angle adapter assembly and the angle torque sensor are deeply integrated, making the angle torque sensor closer to the steering wheel, increasing the accuracy of the sensor in monitoring hand force, thereby improving the steering gear control precision and enhancing the driving experience. This can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a horizontally mounted integrated electromechanical recirculating ball steering gear, comprising a steering gear housing, a steering screw, an angle adapter assembly, an upper housing, and an input shaft. The angle adapter assembly is located on the left side of the steering gear housing. The steering gear housing consists of a left housing and a right housing, which are horizontally fixedly connected by bolts. Angular contact bearings are respectively provided on the left and right sides inside the left housing. One end of the steering screw is installed in the right angular contact bearing, and the other end of the steering screw passes through the left angular contact bearing and connects to the output end of the angle adapter assembly. An upper housing is provided on the input end of the angle adapter assembly, and one end of the input shaft passes through the upper housing and connects to the input end of the angle adapter assembly via a torsion bar. An angle torque sensor is provided in the upper housing.

[0005] Furthermore, the angle adapter assembly includes a wave spring, an angle adapter input shaft, an adapter housing, and an angle adapter output shaft. The angle adapter input shaft and the angle adapter output shaft are respectively mounted in the adapter housing via bearings. The lower end of the angle adapter input shaft meshes with the left end of the angle adapter output shaft. A steering screw is connected to the angle adapter output shaft. The input shaft is connected to the angle adapter input shaft via a torsion bar. Wave springs are respectively provided between the bevel teeth of the angle adapter input shaft and the bearing, and between the bevel teeth of the angle adapter output shaft and the bearing.

[0006] Furthermore, an adjusting nut is provided at the left end of the left housing, the left-side angular contact bearing is located in the adjusting nut, and a sealing ring is provided between the adjusting nut and the steering screw.

[0007] Furthermore, a worm gear is installed in the right housing, and the worm gear is mounted on the steering screw. The worm gear meshes with the worm. A motor is installed on the outside of the steering gear housing, and the output shaft of the motor is connected to the worm.

[0008] Furthermore, a steering nut is provided on the steering screw, and the steering nut engages with the rocker arm shaft.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] 1. This steering gear adopts a horizontal mounting structure, which reduces the axial space of the product compared with the original steering gear, making it easier to lower the vehicle body and improve the vehicle's passability; at the same time, the angle adapter assembly and the angle torque sensor are deeply integrated, making the angle torque sensor closer to the steering wheel, increasing the accuracy of the sensor in monitoring hand force, thereby improving the steering gear control precision and enhancing the driving experience.

[0011] 2. Wave springs can compensate for the increased clearance caused by long-term wear of bevel gears, enabling automatic adjustment of bevel gear clearance and improving the smoothness of steering in subsequent products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 ;

[0014] Figure 3 This is a schematic diagram of the appearance and structure of this utility model.

[0015] In the diagram: 1 Angular contact bearing, 2 Rocker arm shaft, 3 Steering nut, 4 Steering screw, 5 Left housing, 6 Right housing, 7 Input shaft, 8 Torque bar, 9 Upper housing, 10 Angular adapter assembly, 11 Worm gear, 12 Worm, 13 Adjusting nut, 14 Angle torque sensor, 15 Wave spring, 16 Angular adapter input shaft, 17 Adapter housing, 18 Angular adapter output shaft, 19 Motor. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0017] Please see Figure 1-3 This utility model provides a technical solution: a horizontally mounted integrated electromechanical recirculating ball steering gear, including a steering gear housing, a steering screw 4, an angle adapter assembly 10, an upper housing 9, and an input shaft 7. The angle adapter assembly 10 is located on the left side of the steering gear housing. The steering gear housing is composed of a left housing 5 and a right housing 6, which are horizontally fixedly connected by bolts. This allows the steering gear to have a horizontal mounting structure, which helps to reduce the axial height of the cab, thereby reducing the overall vehicle height and improving the driving experience. The split structure design of this steering gear housing facilitates processing and assembly, improving production efficiency. Angular contact bearings 1 are respectively provided on the left and right sides inside the left housing 5. One end of the steering screw 4 is installed in the right-side angular contact bearing 1, and the other end of the steering screw 4 passes through the left-side angular contact bearing 1 and connects to the angle adapter. The output end of assembly 10 is connected to a steering nut 3 on the steering screw 4. The steering nut 3 engages with the rocker arm shaft 2. The steering screw 4 provides rotational support for the steering screw 4. An upper housing 9 is provided on the input end of the angle adapter assembly 10. One end of the input shaft 7 passes through the upper housing 9 and is connected to the input end of the angle adapter assembly 10 via a torsion bar 8. The angle adapter assembly 10 realizes the steering of power transmission from the vertical direction to the horizontal direction, so that the steering screw 4 is installed in a horizontal state, which can effectively reduce the vertical height of the equipment. An angle torque sensor 14 is provided in the upper housing 9. The angle torque sensor 14 is used to detect whether the torsion bar 8 is deformed. The angle torque sensor 14 is integrated with the angle adapter assembly 10, which can realize dynamic calibration of the sensor. At the same time, the sensor is close to the steering wheel, which improves the accuracy of subsequent calibration and enhances the driving experience.

[0018] The angle adapter assembly 10 includes a wave spring 15, an angle adapter input shaft 16, an adapter housing 17, and an angle adapter output shaft 18. The angle adapter input shaft 16 and the angle adapter output shaft 18 are respectively mounted in the adapter housing 17 through bearings. The lower end of the angle adapter input shaft 16 meshes with the left end of the angle adapter output shaft 18. The steering screw 4 is connected to the angle adapter output shaft 18. The input shaft 7 is connected to the angle adapter input shaft 16 through a torsion bar 8. Wave springs 15 are respectively provided between the bevel teeth of the angle adapter input shaft 16 and the bearing and between the bevel teeth of the angle adapter output shaft 18 and the bearing. The wave springs 15 can compensate for the problem of increased clearance caused by long-term wear of the bevel gears, realize automatic adjustment of bevel gear clearance, and improve the steering smoothness of subsequent products.

[0019] An adjusting nut 13 is provided at the left end of the left housing 5. The left angular contact bearing 1 is located in the adjusting nut 13. A sealing ring is provided between the adjusting nut 13 and the steering screw 4.

[0020] A worm gear 11 is provided in the right housing 6. The worm gear 11 is mounted on the steering screw 4 and meshes with the worm 12. A motor 19 is provided on the outside of the steering gear housing. The output shaft of the motor 19 is connected to the worm 12.

[0021] The angle adapter assembly 10 is connected to the recirculating ball steering gear via internal and external splines, and appropriate spline parameters are designed to ensure smooth steering transmission.

[0022] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A horizontally mounted integrated electromechanical recirculating ball steering gear, comprising a steering gear housing, a steering screw (4), an angle adapter assembly (10), an upper housing (9), and an input shaft (7), characterized in that: Angle adapter assembly (10) is located on the left side of steering gear housing. Steering gear housing consists of left housing (5) and right housing (6). Left housing (5) and right housing (6) are horizontally fixed together by bolts. Angle contact bearings (1) are provided on the left and right sides of the interior of left housing (5). One end of steering screw (4) is installed in the right angle contact bearing (1). The other end of steering screw (4) passes through the left angle contact bearing (1) and is connected to the output end of angle adapter assembly (10). An upper housing (9) is provided on the input end of angle adapter assembly (10). One end of input shaft (7) passes through upper housing (9) and is connected to the input end of angle adapter assembly (10) through torsion bar (8). An angle torque sensor (14) is provided in upper housing (9).

2. The horizontally mounted integrated electromechanical recirculating ball steering gear according to claim 1, characterized in that: The angle adapter assembly (10) includes a wave spring (15), an angle adapter input shaft (16), an adapter housing (17), and an angle adapter output shaft (18). The angle adapter input shaft (16) and the angle adapter output shaft (18) are respectively installed in the adapter housing (17) through bearings. The lower end of the angle adapter input shaft (16) meshes with the left end of the angle adapter output shaft (18). The steering screw (4) is connected to the angle adapter output shaft (18). The input shaft (7) is connected to the angle adapter input shaft (16) through a torsion bar (8). Wave springs (15) are respectively provided between the bevel teeth of the angle adapter input shaft (16) and the bearing and between the bevel teeth of the angle adapter output shaft (18) and the bearing.

3. A horizontally mounted integrated electromechanical recirculating ball steering gear according to claim 1, characterized in that: An adjusting nut (13) is provided at the left end of the left housing (5), and the left angular contact bearing (1) is located in the adjusting nut (13). A sealing ring is provided between the adjusting nut (13) and the steering screw (4).

4. A horizontally mounted integrated electromechanical recirculating ball steering gear according to claim 1, characterized in that: A worm gear (11) is provided in the right housing (6). The worm gear (11) is mounted on the steering screw (4). The worm gear (11) meshes with the worm (12). A motor (19) is provided on the outside of the steering housing. The output shaft of the motor (19) is connected to the worm (12).

5. A horizontally mounted integrated electromechanical recirculating ball steering gear according to claim 1, characterized in that: A steering nut (3) is provided on the steering screw (4), and the steering nut (3) engages with the rocker arm shaft (2).

Images