Angle detection device, steering gear and vehicle

Abstract

The utility model discloses an angle detection device, a steering gear and a vehicle, and belongs to the technical field of vehicles. The angle detection device comprises a transmission assembly and an angle detection piece, the transmission assembly is suitable for being in transmission connection with a steering shaft of the steering gear, the transmission ratio between the transmission assembly and the steering shaft is larger than 1, the angle detection piece is connected to the transmission assembly, and the steering shaft drives the transmission assembly to move. And the angle detection piece detects the rotation angle of the steering shaft by detecting the rotation angle of the transmission assembly. According to the steering device, the transmission assembly is arranged, rotation of the steering shaft can be transmitted to the angle detection piece, in this way, the transmission ratio of the transmission assembly to the steering shaft can be adjusted according to needs, the rotation angle of the steering shaft can be amplified in an equal proportion, and flexible model selection of the angle detection piece is facilitated. In addition, through the arrangement of the transmission assembly, the matching position of the angle detection piece and the steering shaft can be flexibly set according to needs, and flexible layout of the angle detection device in the steering gear is facilitated.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to an angle detection device, a steering gear and a vehicle. Background Art

[0002] With the development of vehicle electrification and intelligence, in order to meet the requirements of vehicle safety and driving comfort, high requirements are placed on precise control of steering angles.

[0003] In the related art, in order to accurately measure the steering angle, an angle sensor is generally set at the end of the rocker shaft of the steering gear to detect the rotation angle of the rocker shaft. However, when using the steering gear structure in the related art, the rotation angle of the rocker shaft is small, and the accuracy requirement of the sensor is high, which is not convenient for the selection of the sensor. Utility Model Content

[0004] The present application aims to provide an angle detection device, a steering gear and a vehicle, which can solve the problem that the steering gear structure in the related art has a small rotation angle of the rocker arm shaft, which requires a high accuracy of the sensor and is inconvenient to select the sensor.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an angle detection device, comprising:

[0007] A transmission assembly, adapted to be in transmission connection with a steering shaft of a steering gear, wherein a transmission ratio between the transmission assembly and the steering shaft is greater than 1;

[0008] An angle detection member is connected to the transmission assembly, and is used to detect the rotation angle of the transmission assembly.

[0009] Optionally, the transmission assembly includes a first transmission member, the input end of the angle detection member is connected to the first transmission member, and the first transmission member is suitable for meshing and transmitting with a second transmission member on the steering shaft.

[0010] Optionally, a transmission ratio of the second transmission member to the first transmission member is I, satisfying: 2.5≤I≤5.5.

[0011] Optionally, the axis of the first transmission member intersects with the axis of the second transmission member.

[0012] Optionally, the first transmission member and the second transmission member are both bevel gears;

[0013] And / or, the first transmission member and the second transmission member are both end gears.

[0014] Optionally, the first transmission member is a worm wheel, and the second transmission member is a worm.

[0015] Optionally, a protective cover is further included, which is suitable for being connected to the outer side of the shell of the steering gear and enclosing with the shell to form a accommodating cavity, and the angle detection component is arranged in the accommodating cavity.

[0016] Optionally, it also includes a first seal and a second seal, the second seal is arranged between the protective cover and the shell, and is used to seal the connection between the protective cover and the shell, and the first seal is arranged between the angle detection member and the shell, and is used to seal the connection between the angle detection member and the shell.

[0017] Optionally, it further includes a first bearing, which is suitable for being installed in the housing, and the input end of the angle detection member passes through the first bearing and is connected to the transmission assembly.

[0018] In a second aspect, an embodiment of the present application proposes a steering gear, comprising a steering shaft and an angle detection device as described in any one of the above items, wherein the steering shaft is connected to the transmission assembly.

[0019] Optionally, the steering shaft includes a rocker shaft and a second transmission member, the second transmission member is arranged on the rocker shaft, and the second transmission member is transmission-connected to the transmission assembly.

[0020] Optionally, the rocker arm shaft has an output end, the output end is suitable for connecting to a steering rocker arm of a vehicle, and the second transmission member is arranged close to the output end.

[0021] In a third aspect, an embodiment of the present application proposes a vehicle, comprising a steering gear as described in any one of the above items.

[0022] In an embodiment of the present application, the angle detection device includes a transmission assembly and an angle detection member, the transmission assembly is suitable for transmission connection with the steering shaft of the steering gear, the transmission ratio between the transmission assembly and the steering shaft is greater than 1, the angle detection member is connected to the transmission assembly, the steering shaft drives the transmission assembly to move, and then the angle detection member detects the rotation angle of the steering shaft by detecting the rotation angle of the transmission assembly. In the present application, by setting the transmission assembly, the rotation of the steering shaft can be transmitted to the angle detection member, so that the transmission ratio of the transmission assembly and the steering shaft can be adjusted as needed, so that the rotation angle of the steering shaft can be proportionally amplified, so as to facilitate the flexible selection of the angle detection member. In addition, by setting the transmission assembly, the matching position of the angle detection member and the steering shaft can be flexibly set as needed, which facilitates the flexible layout of the angle detection device in the steering gear.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of an angle detection device according to an embodiment of the present application;

[0026] Figure 2 is a partial cross-sectional view of an angle detection device according to an embodiment of the present application;

[0027] Figure 3 is a schematic diagram of the assembly of an angle detection device according to an embodiment of the present application;

[0028] Figure 4 is a schematic diagram of the assembly of the second transmission member according to an embodiment of the present application;

[0029] Figure 5 is an exploded diagram of an angle detection device according to an embodiment of the present application;

[0030] Figure 6 It is a partial structural exploded diagram of a steering gear according to an embodiment of the present application.

[0031] Reference numerals:

[0032] 1: transmission assembly; 11: first transmission member; 12: first bearing; 2: steering shaft; 21: second transmission member; 22: second bearing; 23: mounting portion; 24: thrust bearing; 25: rocker shaft; 26: output end; 3: angle detection member; 31: input end; 32: protective cover; 321: accommodating chamber; 33: first sealing member; 34: sensor wiring harness; 35: second sealing member; 4: housing; 41: side end cover; 5: steering rocker arm. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] Before introducing the angle detection device, steering gear and vehicle provided in the embodiments of the present application in detail, the specific application scenarios of the detection device are first described in detail:

[0038] Reference Figure 1 and Figure 6 The rocker arm shaft 25 in the vehicle's steering gear serves as an output shaft connected to the vehicle's steering rocker arm 5. In order to accurately control the steering angle, the rotation angle of the rocker arm shaft 25 is usually measured, and the measurement result is transmitted to the control system, thereby achieving precise control of the vehicle's steering through the steering mechanism.

[0039] In the related art, an angle detection device is used to measure the rotation angle of the rocker shaft 25. The sensor of the angle detection device has a stator and a rotor that rotate relative to each other. The rotor of the sensor is fixed on the rocker shaft 25, and the stator is fixed on the side end cover 41 of the steering gear. When the rocker shaft 25 rotates, the stator and the rotor of the sensor rotate relative to each other. The sensor body detects the rotation angle of the rocker shaft 25 by directly measuring the relative rotation angle between the stator and the rotor.

[0040] However, on the one hand, since the sensor needs to detect the absolute rotation angle of the rocker shaft 25, and the rotation angle of the rocker shaft 25 is usually small, the accuracy requirement of the sensor is relatively high, but the technical difficulty of a small-range, high-precision sensor is relatively high, and the cost is also relatively high; if a large-range, low-precision sensor is used, the accurate measurement of the rotation angle of the rocker shaft 25 cannot be achieved, and thus the steering angle cannot be accurately controlled; on the other hand, the sensor is arranged at the end of the rocker shaft 25 away from the output end 26, but because the rocker shaft 25 itself will twist when it is loaded, there is a deviation between the rotation angle measured by the sensor at the end and the actual rotation angle of the output end 26 of the rocker shaft 25, and the measured value is not accurate enough; on the other hand, the sensor is arranged at the end of the rocker shaft 25, that is, the sensor is actually arranged in the inner cavity of the steering gear; and the rocker shaft generally adopts a dynamic seal, and the rotation of the rocker shaft 25 makes the dynamic seal easy to fail and cause internal leakage, and then the oil causes the sensor to fail, which brings safety risks to the vehicle. In order to solve the above problems, the present application proposes a detection device.

[0041] The angle detection device, steering gear and vehicle provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in combination with the accompanying drawings.

[0042] Reference Figure 1 According to the angle detection device of some embodiments of the present application, the angle detection device includes a transmission component 1 and an angle detection component 3, the transmission component 1 is suitable for transmission connection with the steering shaft 2 of the steering gear, and the transmission ratio of the transmission component 1 to the steering shaft 2 is greater than 1; the angle detection component 3 is connected to the transmission component 1, and the angle detection component 3 detects the rotation angle of the transmission component 1.

[0043] In an embodiment of the present application, the angle detection device includes a transmission assembly 1 and an angle detection member 3. The transmission assembly 1 is suitable for transmission connection with the steering shaft 2 of the steering gear. The transmission ratio between the transmission assembly 1 and the steering shaft 2 is greater than 1. The angle detection member 3 is connected to the transmission assembly 1. The steering shaft 2 drives the transmission assembly 1 to move, and then the angle detection member 3 detects the rotation angle of the steering shaft 2 by detecting the rotation angle of the transmission assembly 1. In the present application, by setting the transmission assembly 1, the rotation of the steering shaft 2 can be transmitted to the angle detection member 3. In this way, the transmission ratio of the transmission assembly 1 and the steering shaft 2 can be adjusted as needed, so that the rotation angle of the steering shaft 2 can be proportionally amplified, so as to facilitate the flexible selection of the angle detection member 3. In addition, by setting the transmission assembly 1, the matching position of the angle detection member 3 and the steering shaft 2 can be flexibly set as needed, which facilitates the flexible layout of the angle detection device in the steering gear.

[0044] In specific applications, refer to Figure 1The transmission assembly 1 is in transmission connection with the steering shaft 2 of the steering gear, and the angle detection component 3 is connected to the transmission assembly 1, so that the transmission assembly 1 can transmit the rotation angle of the steering shaft 2 to the angle detection component 3, thereby facilitating the angle detection component 3 to detect the corresponding rotation angle.

[0045] It can be understood that the transmission component 1 is connected to the steering shaft 2 in transmission, and the transmission ratio between the transmission component 1 and the steering shaft 2 is greater than 1, so that the transmission component 1 proportionally amplifies the rotation angle of the steering shaft 2 (generally amplified by I times, I is the transmission ratio between the transmission component 1 and the steering shaft 2) and transmits it to the input end 31 of the angle detection component 3, so that the angle detection component 3 detects the rotation angle of the steering shaft 2.

[0046] It can be understood that the minimum angle recognized by the angle detection component 3 is its own detection accuracy. Due to the existence of the transmission ratio amplification mechanism between the transmission assembly 1 and the steering shaft 2, the measurement accuracy of the angle detection component 3 on the steering shaft 2 is 1 / 1 of its own accuracy.

[0047] It can be understood that the transmission assembly 1 may include multiple gears or worm gears, and the transmission assembly 1 is respectively connected to the steering shaft 2 and the input end 31 of the angle detection component 3. On the basis of ensuring that the components do not interfere with each other, the number and position of gear teeth can be flexibly adjusted as needed to determine the matching position of the angle detection component 3 and the steering shaft 2, thereby facilitating the flexible layout of the angle detection device in the steering gear.

[0048] It can be understood that the angle detection member 3 of the present application includes an angle sensor for detecting the rotation angle of the steering shaft 2. Specifically, the angle sensor includes but is not limited to: a Hall effect angle sensor, a magnetoresistive effect angle sensor, a potentiometer angle sensor, etc., and those skilled in the art can select them according to their needs, and the present application does not limit this.

[0049] refer to Figure 1 and Figure 2 In some embodiments of the present application, the transmission assembly 1 includes a first transmission member 11, the input end 31 of the angle detection member 3 is connected to the first transmission member 11, and the first transmission member 11 is suitable for meshing and transmitting with the second transmission member 21 on the steering shaft 2.

[0050] In the embodiment of the present application, the first transmission member 11 is connected to the input end 31 of the angle detection member 3, the second transmission member 21 is provided on the steering shaft 2, and the first transmission member 11 is meshed with the second transmission member 21 for transmission. In this way, through the cooperation between the first transmission member 11 and the second transmission member 21, the rotation angle of the steering shaft 2 can be transmitted to the angle detection member 3, so that the angle detection member 3 detects the rotation angle of the steering shaft 2.

[0051] In a specific application, the steering shaft 2 includes a rocker shaft 25, and the second transmission member 21 is arranged on the rocker shaft 25. The rocker shaft 25 rotates to drive the second transmission member 21 to rotate, and then drives the first transmission member to rotate, so as to transmit the rotation angle of the rocker shaft 25 to the first transmission member 11, thereby amplifying the rotation angle of the rocker shaft 25 (generally amplified by 1 times, I is the transmission ratio of the first transmission member 11 to the second transmission member 21), and the angle detection member 3 detects the rotation angle of the rocker shaft 25 by detecting the rotation angle of the first transmission member 11. In this way, the original rotation angle of the rocker shaft 25 will be proportionally amplified when it is transmitted to the input end 31 of the angle detection member 3, thereby expanding the angle value actually detected by the angle detection member 3, reducing the accuracy requirements of the angle detection member 3, and thus reducing the processing cost.

[0052] In specific applications, the meshing of the first transmission member 11 and the second transmission member 21 can be: spur gear meshing transmission, helical gear meshing transmission, curved gear meshing transmission, worm gear transmission. Technical personnel in this field can set it according to needs, and this application does not impose any restrictions on this.

[0053] It can be understood that the first transmission member 11 and the second transmission member 21 include but are not limited to: involute gears, cycloid gears and circular arc gears, etc. Those skilled in the art can select them according to their needs, and this application does not impose any restrictions on this.

[0054] refer to Figure 1 and Figure 5 In some embodiments of the present application, the transmission ratio of the second transmission member 21 to the first transmission member 11 is I, satisfying: 2.5≤I≤5.5.

[0055] In the embodiment of the present application, the transmission ratio I of the second transmission member 21 and the first transmission member 11 is set to be in the range of 2.5 to 5.5. In this way, while ensuring that the first transmission member 11 and the second transmission member 21 do not occupy too much space, the rotation angle of the rocker shaft 25 is enlarged according to the transmission ratio I, so that the actual angle that can be detected by the angle detection member 3 is larger, which is equivalent to improving the accuracy of the actual detection, making the detected rotation angle more accurate.

[0056] Specifically, the transmission ratio I can be set to any value such as 2.5, 2.75, 3, 3.25, 3.5, 3.75, 4, 4.25, 4.5, 4.75, 5, 5.25, 5.5, or a range between any two values.

[0057] It is understandable that the detection accuracy of the small-range angle detection member 3 is high, but the price is relatively expensive; the price of the large-range angle detection member 3 is relatively low, but the detection accuracy is low. In the present application, by setting the transmission ratio I of the transmission assembly 1, the original rotation angle of the rocker arm shaft 25 is proportionally amplified according to the transmission ratio I, so that the angle detection member 3 can select a cheaper large-range sensor, and due to the proportional amplification effect, the original detection accuracy can be improved by 1 times.

[0058] Taking the case where the rocker shaft 25 rotates 0.1° and the transmission ratio I is 5 as an example, the rocker shaft 25 rotates 0.1°, and after being transmitted by the transmission assembly 1, the angle detection component 3 detects that the rotation angle of the input end 31 is 0.5°, which is equivalent to increasing the detection accuracy by 5 times. In other words, for example, the detection accuracy of the originally selected large-range angle sensor is 0.1, and after being transmitted by the transmission assembly 1 with a transmission ratio I of 5, the detection accuracy of the angle detection device is 0.02. In addition, it can also prevent the sensor for measuring the rotation angle from always working in a small range, which is easy to increase the fatigue of electronic components within the measurement range and reduce the service life.

[0059] It is understandable that if the transmission ratio I is less than 2.5, the improved detection accuracy of the angle detection device cannot meet the actual work requirements. If the transmission ratio I is greater than 5.5, the size of the transmission component 1 increases significantly, and the structural size of the steering gear main cavity needs to be increased to achieve it, and the weight cost will also increase accordingly.

[0060] Preferably, the transmission ratio I can be set to 4.125. In this way, when an inexpensive sensor is selected, the original detection accuracy of the sensor is ±0.1°. After the transmission component 1 increases the speed, the detection accuracy of the angle detection device is improved to ±0.025°, thereby meeting the angle detection accuracy requirements of the highly adaptive wire-controlled steering and intelligent driving systems.

[0061] Please refer to Figure 2 In some embodiments of the present application, the axis of the first transmission member 11 intersects with the axis of the second transmission member 21 .

[0062] In the embodiment of the present application, the axis of the first transmission member 11 intersects with the axis of the second transmission member 21, converting the rotation of the rocker arm shaft 25 in the horizontal plane into the rotation of the plane where the input end 31 of the angle detection member 3 is located, thereby facilitating the layout of the angle detection device.

[0063] Preferably, the axis of the first transmission member 11 and the axis of the second transmission member 21 are perpendicular to each other, so as to ensure the stability and accuracy of the transmission between the first transmission member 11 and the second transmission member 21 .

[0064] Please refer to Figure 2 and Figure 5In some embodiments of the present application, the first transmission member 11 and the second transmission member 21 are both bevel gears.

[0065] In the embodiment of the present application, the first transmission member 11 and the second transmission member 21 are both bevel gears, so that the first transmission member 11 and the second transmission member 21 are not prone to tooth jumping or tooth slipping, and are less affected by the temperature, humidity, and oily environment.

[0066] It can be understood that the first transmission member 11 and the second transmission member 21 specifically include but are not limited to: straight bevel gears, helical bevel gears, zero-degree bevel gears and curved bevel gears, etc., and those skilled in the art can select them according to their needs, and this application does not impose any restrictions on this.

[0067] In some embodiments of the present application, the first transmission member 11 and the second transmission member 21 are both face gears.

[0068] In the embodiment of the present application, the first transmission member 11 and the second transmission member 21 are both face gears, which can simplify the support, reduce the weight of the system, and also reduce vibration and noise.

[0069] In a specific application, the first transmission member 11 and the second transmission member 21 are both face gears; compared with bevel gears, they have a greater overlap, can improve the bearing capacity of the gear teeth, increase the stability of the transmission, and are more convenient for maintenance.

[0070] In some embodiments of the present application, the first transmission member 11 is a worm, and the second transmission member 21 is a worm wheel.

[0071] In the embodiment of the present application, the first transmission member 11 is connected to the second transmission member 21 in a transmission manner, specifically a worm gear transmission, so that a larger transmission ratio can be obtained, while the transmission is smooth and the noise is low.

[0072] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 In some embodiments of the present application, the angle detection device also includes a protective cover 32, which is suitable for being connected to the outer side of the shell 4 of the steering gear and enclosing with the shell 4 to form a accommodating cavity 321, and the angle detection component 3 is arranged in the accommodating cavity 321.

[0073] In the embodiment of the present application, the protective cover 32 is connected to the outer side of the housing 4 of the steering gear, and encloses a accommodating cavity 321. The angle detection component 3 is arranged in the accommodating cavity 321, thereby forming a closed environment for the angle detection component 3, isolating the angle detection component 3 from the external environment, and preventing the angle detection component 3 from being damaged by the impact of other components.

[0074] It can be understood that the accommodation size of the accommodation cavity 321 should be larger than the overall size of the angle detection component 3 so that the angle detection component 3 can be completely disposed in the accommodation cavity 321 .

[0075] In specific applications, refer to Figure 3 and Figure 5 The protective cover 21 is connected to the outer side of the housing 4 by bolts, and the angle detection component 3 is arranged in the accommodating cavity 321 instead of being arranged in the main cavity of the steering gear. On the one hand, it can prevent the angle detection component 3 from being damaged by the oil in the main cavity. On the other hand, it increases the contact area between the angle detection component 3 and the external environment, increases the heat dissipation efficiency, prevents the angle detection component 3 from overheating, ensures that the angle detection component 3 can always work in a good working condition, and improves the stability of the angle detection device.

[0076] Please refer to Figure 1 and Figure 5 In some embodiments of the present application, the angle detection device also includes a first seal 33 and a second seal 35. The second seal 35 is arranged between the protective cover 32 and the shell 4 to seal the connection between the protective cover 32 and the shell 4. The first seal 33 is arranged between the angle detection member 3 and the shell 4 to seal the connection between the angle detection member 3 and the shell 4.

[0077] In the embodiment of the present application, a second seal 35 is provided between the protective cover 32 and the shell 4 to seal the connection between the protective cover 32 and the shell 4, and a first seal 33 is provided between the angle detection component 3 and the shell 4 to seal the connection between the angle detection component 3 and the shell 4, so that the angle detection component 3 is in a closed environment, the angle detection component 3 is isolated from the external environment, and the use condition of the angle detection component 3 is optimized.

[0078] In a specific application, the first sealing member 33 and the second sealing member 35 include, but are not limited to, sealing rings, sealing gaskets, etc. Those skilled in the art may select them according to their needs, and this application does not impose any limitation on this.

[0079] Please refer to Figure 1 and Figure 5 In some embodiments of the present application, the angle detection device further includes a first bearing 12 , which is suitable for being installed in the housing 4 , and the input end 31 of the angle detection member 3 passes through the first bearing 12 and is connected to the transmission assembly 1 .

[0080] In the embodiment of the present application, the input end 31 of the angle detection member 3 passes through the first bearing 12 and is connected to the transmission assembly 1. The first bearing 12 is suitable for being installed in the housing 4, so that the first bearing 12 can ensure the rotation accuracy of the input end 31 while supporting the rotation of the first transmission member 11, thereby reducing the radial load of the input end 31.

[0081] In a specific application, the first transmission member 11 and the input end 31 may be connected by an interference fit or by a key connection. Those skilled in the art may select the connection according to their needs, and this application does not impose any limitation on this.

[0082] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 5 In some embodiments of the present application, the angle detection device also includes a sensor harness 34, one end of the sensor harness 34 is passed through the protective cover 32 and connected to the angle detection element 3, and the other end is used to connect to the vehicle control system to transmit the rotation angle signal detected by the angle detection element 3 to the vehicle control system, thereby accurately controlling the vehicle steering.

[0083] Please refer to Figure 6 According to some embodiments of the present application, the steering gear includes a steering shaft 2 and an angle detection device as described in any of the above embodiments, and the steering shaft 2 and the angle detection device are transmission-connected.

[0084] In the embodiment of the present application, the steering shaft 2 is connected to the transmission assembly 1 in transmission connection, the transmission ratio between the transmission assembly 1 and the steering shaft 2 is greater than 1, the angle detection member 3 is connected to the transmission assembly 1, the steering shaft 2 drives the transmission assembly 1 to move, and then the angle detection member 3 detects the rotation angle of the steering shaft 2 by detecting the rotation angle of the transmission assembly 1. In the present application, by setting the transmission assembly 1, the rotation of the steering shaft 2 can be transmitted to the angle detection member 3, so that the transmission ratio of the transmission assembly 1 and the steering shaft 2 can be adjusted as needed, so that the rotation angle of the steering shaft 2 can be proportionally amplified, so as to facilitate the flexible selection of the angle detection member 3. In addition, by setting the transmission assembly 1, the matching position of the angle detection member 3 and the steering shaft 2 can be flexibly set as needed, which facilitates the flexible layout of the angle detection device in the steering gear.

[0085] Please refer to Figure 1 , Figure 4 and Figure 6 In some embodiments of the present application, the steering shaft 2 includes a rocker shaft 25 and a second transmission member 21 , the second transmission member 21 is disposed on the rocker shaft 25 , and the second transmission member 21 is transmission-connected to the transmission assembly 1 .

[0086] In the embodiment of the present application, by setting the second transmission member 21 in the rocker shaft 25, it is convenient to connect the rocker shaft 25 with the first transmission member 11 of the angle detection device, so that the rotation angle of the rocker shaft 25 can be more accurately transmitted to the input end 31 of the angle detection member 3, so that the rotation angle of the rocker shaft 25 detected by the angle detection member 3 is more accurate.

[0087] Understandably, please refer to Figure 4The rocker shaft 25 is also provided with a mounting portion 23 for clamping the second transmission member 21 on the mounting portion 23 to prevent the second transmission member 21 and the rocker shaft 25 from rotating relative to each other. Figure 1 , Figure 4 and Figure 6 According to some embodiments of the present application, the rocker arm shaft 25 has an output end 26 , and the output end 26 is suitable for connecting to the steering rocker arm 5 of the vehicle, and the second transmission member 21 is arranged near the output end 26 .

[0088] In an embodiment of the present application, the rocker shaft 25 has an output end 26, which is suitable for connecting to the steering rocker arm 5 of the vehicle, so that the vehicle's rotating mechanism steers according to the rotation angle of the rocker shaft 25, and the second transmission member 21 is arranged close to the output end 215, so that the rotation angle of the rocker shaft 25 detected by the angle detection device is not affected by the torsion of the rocker shaft 25 itself, thereby improving the measurement accuracy of the angle detection device and further improving the steering accuracy of the steering gear.

[0089] In a specific application, the output end 26 is a spline connected to the steering rocker arm 5 of the vehicle. The closer the second transmission member 21 is to the output end 26, the more accurate the transmitted rotation angle is, and thus the steering control accuracy of the steering gear is higher.

[0090] Please refer to Figure 6 In some embodiments of the present application, the steering gear further includes at least two second bearings 22 and a thrust bearing 24. At least two second bearings 22 are spaced apart and sleeved on the rocker shaft 25 and installed in the housing 4 to support the rocker shaft 25 for rotation. One of the second bearings 22 is arranged on the side of the second transmission member 21 away from the mounting portion 23, and is used to press the second transmission member 21 to avoid the meshing of the first transmission member 11 and the second transmission member 21 to produce a gap and poor meshing; it ensures that the detection accuracy of the angle detection device is controlled within a smaller fluctuation range. The thrust bearing 24 is installed at one end of the rocker shaft 25 away from the output end 215. Under the joint action of the thrust bearing 24 and at least two second bearings 22, on the one hand, the axial movement of the rocker shaft 25 is avoided, and on the other hand, the meshing between the first transmission member 11 and the second transmission member 21 is avoided to produce a gap, thereby eliminating the influence of vibration on the angle detection device.

[0091] A vehicle according to some embodiments of the present application includes a steering gear as described in any one of the above items.

[0092] In an embodiment of the present application, the angle detection device includes a transmission assembly 1 and an angle detection member 3. The transmission assembly 1 is suitable for transmission connection with the steering shaft 2 of the steering gear. The transmission ratio between the transmission assembly 1 and the steering shaft 2 is greater than 1. The angle detection member 3 is connected to the transmission assembly 1. The steering shaft 2 drives the transmission assembly 1 to move, and then the angle detection member 3 detects the rotation angle of the steering shaft 2 by detecting the rotation angle of the transmission assembly 1. In the present application, by setting the transmission assembly 1, the rotation of the steering shaft 2 can be transmitted to the angle detection member 3. In this way, the transmission ratio of the transmission assembly 1 and the steering shaft 2 can be adjusted as needed, so that the rotation angle of the steering shaft 2 can be proportionally amplified, so as to facilitate the flexible selection of the angle detection member 3. In addition, by setting the transmission assembly 1, the matching position of the angle detection member 3 and the steering shaft 2 can be flexibly set as needed, which facilitates the flexible layout of the angle detection device in the steering gear.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0094] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An angle detection device, characterized in that: include: A transmission assembly (1) adapted to be transmission-connected to a steering shaft (2) of a steering gear, wherein a transmission ratio between the transmission assembly (1) and the steering shaft (2) is greater than 1; An angle detection member (3), the angle detection member (3) is connected to the transmission assembly (1), and the angle detection member (3) is used to detect the rotation angle of the transmission assembly (1).

2. The angle detection device according to claim 1, characterized in that: The transmission assembly (1) comprises a first transmission member (11), an input end (31) of the angle detection member (3) is connected to the first transmission member (11), and the first transmission member (11) is suitable for meshing and transmitting with a second transmission member (21) on the steering shaft (2).

3. The angle detection device according to claim 2, characterized in that: The transmission ratio of the second transmission member (21) to the first transmission member (11) is I, satisfying: 2.5≤I≤5.

5.

4. The angle detection device according to claim 2, characterized in that: The axis of the first transmission member (11) intersects with the axis of the second transmission member (21).

5. The angle detection device according to any one of claims 2 to 4, characterized in that: The first transmission member (11) and the second transmission member (21) are both bevel gears; And / or, the first transmission member (11) and the second transmission member (21) are both end gears.

6. The angle detection device according to any one of claims 2 to 4, characterized in that: The first transmission member (11) is a worm wheel, and the second transmission member (21) is a worm.

7. The angle detection device according to claim 1, characterized in that: It also comprises a protective cover (32), wherein the protective cover (32) is suitable for being connected to the outside of a housing (4) of the steering gear and enclosing with the housing (4) to form a receiving cavity (321), wherein the angle detection component (3) is arranged in the receiving cavity (321).

8. The angle detection device according to claim 7, characterized in that: The invention also comprises a first sealing member (33) and a second sealing member (35), wherein the second sealing member (35) is arranged between the protective cover (32) and the shell (4) and is used to seal the connection between the protective cover (32) and the shell (4); and the first sealing member (33) is arranged between the angle detecting member (3) and the shell (4) and is used to seal the connection between the angle detecting member (3) and the shell (4).

9. The angle detection device according to claim 7, characterized in that: It also comprises a first bearing (13), wherein the first bearing (13) is suitable for being installed in the housing (4), and the input end (31) of the angle detection member (3) passes through the first bearing (13) and is connected to the transmission assembly (1).

10. A steering gear, characterized in that: It comprises a steering shaft (2) and an angle detection device as claimed in any one of claims 1 to 9, wherein the steering shaft (2) is transmission-connected to the angle detection device.

11. The steering gear according to claim 10, characterized in that: The steering shaft (2) comprises a rocker shaft (25) and a second transmission member (21); the second transmission member (21) is arranged on the rocker shaft (25); and the second transmission member (21) is in transmission connection with the transmission assembly (1).

12. The steering gear according to claim 11, characterized in that: The rocker arm shaft (25) has an output end (26), the output end (26) is suitable for connecting to a steering rocker arm (5) of a vehicle, and the second transmission member (21) is arranged close to the output end (26).

13. A vehicle, characterized in that: Comprising a diverter as claimed in any one of claims 10-12.

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