Rack position sensor, drive-by-wire steering gear and vehicle

Abstract

The invention relates to the technical field of steering gears, and discloses a rack position sensor, a drive-by-wire steering gear and a vehicle. Comprising a sensor body which is internally provided with a detection circuit board; the fixed induction block is used for being fixedly connected with the rack, and the fixed induction block is suitable for moving along with the rack so as to move relative to the detection circuit board; the slave sensing block and the fixed sensing block are arranged in a split mode, and an abutting end face is formed on the side, facing the detection circuit board, of the slave sensing block; the flexible connecting piece is arranged between the fixed sensing block and the driven sensing block; the sensor body is located on one side, facing the driven sensing block, of the detection circuit board to form a sensor sliding plate, and the abutting end face is suitable for abutting against the sensor sliding plate and moving relative to the sensor sliding plate. According to the rack position sensor provided by the invention, the air gap change between the sensing block and the detection circuit board is reduced, and the signal accuracy is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of steering gears, and in particular to a rack position sensor, a wire-controlled steering gear and a vehicle. Background Art

[0002] A steer-by-wire device is a device that controls the steering of the wheels through electronic signals. In a steer-by-wire system, the rack position sensor is a key component, which is mainly used to monitor the actual position of the steering rack in real time to determine the steering angle of the wheels. By converting the displacement of the rack into electrical signals, these signals are sent to the vehicle's electronic control unit (ECU), which adjusts the direction of the vehicle based on the information received to ensure that it drives in accordance with the driver's intention. Therefore, the accuracy of the rack position sensor is directly related to whether the steering angle of the vehicle is accurate.

[0003] In the related art, since the induction block of the rack position sensor is rigidly fixed on the rack, the induction block and the induction coil on the PCB should theoretically undergo a linear relative displacement. However, the rack will generate a bending moment when subjected to force, causing the induction block and the induction coil on the PCB to undergo a relative displacement along an arc. On the one hand, this will cause the position of the induction block to shift, and on the other hand, it will cause the air gap between the induction block and the induction coil to increase, resulting in signal distortion. Summary of the invention

[0004] In view of this, the present invention provides a rack position sensor, a wire-controlled steering gear and a vehicle to solve the problem that the rack position sensor signal is distorted due to the bending moment generated when the rack is subjected to force.

[0005] In a first aspect, the present invention provides a rack position sensor, which is suitable for detecting the position of a rack; the rack position sensor comprises:

[0006] A sensor body, in which a detection circuit board is arranged;

[0007] A fixed sensing block, used for fixed connection with the rack, and the fixed sensing block is suitable for following the movement of the rack to move relative to the detection circuit board;

[0008] A driven induction block is separately arranged from the fixed induction block, and a side of the driven induction block facing the detection circuit board forms an abutting end surface;

[0009] A flexible connecting piece is arranged between the fixed sensing block and the driven sensing block;

[0010] The sensor body is located on one side of the detection circuit board facing the driven sensing block to form a sensor slide plate, and the abutting end surface is suitable for abutting the sensor slide plate and moving relative to the sensor slide plate.

[0011] Beneficial effects: By adopting this setting form, it not only ensures the synchronous movement between the fixed induction block and the driven induction block, but also effectively isolates the negative impact caused by the rack bending, avoiding the influence on the driven induction block when the fixed induction block deforms with the rack bending, thus ensuring the stable contact between the sensor slide plate and the abutting end face, further improving the accuracy and reliability of the rack position detection; it is convenient to realize the rack position detection with a larger movement range, adapt to complex working conditions, and broaden the application range. It can effectively compensate for the displacement deviation caused by the rack bending, effectively reduce the air gap change between the induction block and the detection circuit board, ensure the stability of the air gap between the induction block and the detection circuit board, and then ensure the accuracy of the signal.

[0012] In an alternative embodiment, the flexible connector includes a spring, and the spring is compressively arranged between the fixed induction block and the driven induction block.

[0013] Beneficial effects: By compressively arranging the spring between the fixed induction block and the driven induction block, the spring can adaptively expand and contract when the rack bends, and can always tightly press the driven induction block, ensuring that the driven induction block still maintains close contact with the sensor slide plate when the rack bends, thus effectively offsetting the displacement error caused by the rack bending, further buffering the influence of the bending moment, improving the accuracy and reliability of signal transmission, and adapting to the needs of a wider range of working conditions.

[0014] In an alternative embodiment, the driven induction block is formed with a contact portion, and the contact portion is adapted to at least partially extend into the fixed induction block.

[0015] Beneficial effects: By providing the contact portion and making the contact portion at least partially extend into the fixed induction block, it is convenient to realize the synchronous movement of the driven induction block following the fixed induction block, thereby enhancing the mechanical coupling between the fixed induction block and the driven induction block, facilitating the formation of a stable fitting structure, further enhancing the relative position fixity between the two, effectively reducing the relative displacement caused by external impact or vibration, ensuring that the sensor can stably and accurately detect the position change of the rack under different working conditions, and improving the overall anti-interference ability of the system.

[0016] In an alternative embodiment, the fixed induction block and / or the driven induction block are provided with mounting grooves, and the spring is adapted to be mounted in the mounting grooves.

[0017] Beneficial effects: Through the precise limitation of the mounting grooves, it is ensured that the spring can still maintain a uniform elastic force distribution in the compressed state, further optimizing the supporting effect of the spring on the driven induction block, and improving the stability and durability of the sensor in a complex environment.

[0018] In an alternative embodiment, both the abutting end face and the sensor slide plate are configured as planes.

[0019] Beneficial effects: By constructing both the abutting end face and the sensor slide plate as planes, the contact method between the two is simplified, the contact precision is improved, ensuring smooth operation of the driven sensing block during dynamic movement, further enhancing the sensitivity and response speed of the sensor to the position change of the rack. It avoids the change of air gap caused by uneven contact surface, ensures the stability of the air gap between the sensing block and the detection circuit board, and thus ensures accurate signals.

[0020] In an alternative embodiment, in the direction perpendicular to the plane where the sensor slide plate is located, the distance between the end face of the sensor slide plate and the detection circuit board remains unchanged.

[0021] Beneficial effects: By precisely controlling this distance, signal interference caused by distance fluctuations is effectively avoided, further improving the detection accuracy and stability of the sensor to the position change of the rack.

[0022] In a second aspect, the present invention also provides a steer-by-wire steering gear, comprising:

[0023] A steering gear body, inside which a rack is provided, and the rack is adapted to move relative to the steering gear body;

[0024] And the rack position sensor as described above.

[0025] In an alternative embodiment, the steering gear body includes a housing, the housing is provided with an installation cavity, and at least part of the fixed sensing block is located in the installation cavity;

[0026] The sensor body is connected to the housing; the sensor body and the housing jointly enclose a guiding cavity, and the guiding cavity is adapted to form a guide for the movement of the fixed sensing block and / or the driven sensing block.

[0027] Beneficial effects: The sensor body and the housing jointly enclose a guiding cavity, and the guiding cavity is adapted to form a guide for the movement of the fixed sensing block and / or the driven sensing block, ensuring that the sensing block maintains a stable trajectory during movement, reducing friction and wear.

[0028] In an alternative embodiment, the rack is provided with an assembly groove, and the fixed sensing block is adapted to be installed in the assembly groove, and the fixed sensing block and the rack are fixedly connected via a fixing member.

[0029] Beneficial effects: The fixed sensing block is tightly connected to the rack through the fixing member, ensuring the relative position stability between the sensing block and the rack, avoiding signal errors caused by loosening, and further improving the accuracy and reliability of the steering system.

[0030] In a third aspect, the present invention also provides a vehicle, comprising: wheels; steering knuckles;

[0031] And the steer-by-wire steering gear as described above; the wheels are connected to the steer-by-wire steering gear via the steering knuckles.

[0032] Since the vehicle includes a rack position sensor, which has the same effect as the rack position sensor, it will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the steer-by-wire steering gear of the present invention;

[0035] Figure 2 It is a schematic diagram of the disassembled state of the steer-by-wire steering gear of the present invention;

[0036] Figure 3 It is a schematic diagram of the further disassembled state of the steer-by-wire steering gear of the present invention;

[0037] Figure 4 It is a disassembled schematic diagram of the rack and the fixed induction block of the present invention;

[0038] Figure 5 It is a partial enlarged view of the cross-sectional state of the steer-by-wire steering gear of the present invention.

[0039] Description of the reference numerals:

[0040] 1. Steering gear body; 11. Housing; 12. Rack; 101. Installation cavity; 102. Guide cavity; 121. Assembly groove;

[0041] 2. Sensor body; 21. Fixed induction block; 22. Flexible connecting piece; 23. Driven induction block; 231. Abutting end face; 232. Contact part; 24. Detection circuit board; 25. Sensor slide plate;

[0042] 201. Installation groove; 202. Fixing piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] A steer-by-wire system is a device that controls the steering of wheels through electronic signals. In a steer-by-wire system, there is no direct mechanical connection between the steering wheel and the front wheels. Instead, an electronic controller controls the steering actuator according to the driver's operation of the steering wheel. The steering actuator drives the rack to move left and right through a motor, thereby pushing the tie rod to change the wheel angle, and then realizing the steering of the vehicle.

[0048] In a steer-by-wire system, the rack position sensor is a key component. It is mainly used to monitor the actual position of the steering rack in real time, so as to determine the steering angle of the wheels. By converting the displacement of the rack into electrical signals, these signals are sent to the vehicle's electronic control unit (ECU). The ECU will adjust the direction of the vehicle according to the received information to ensure that it travels according to the driver's intention. Therefore, the accuracy of the rack position sensor is directly related to whether the steering angle of the vehicle is accurate.

[0049] In related technologies, some steer-by-wire systems often use an angle sensor to convert the rack position sensor. The angle sensor calculates the actual position of the rack by monitoring the rotation angle of the pinion shaft and combining the transmission ratio of the pinion and the rack. This solution is complex to implement, does not directly monitor the position of the rack, resulting in complex software design, and at the same time increases the pinion shaft, two bearings, angle sensor end cover, angle sensor, etc., resulting in high costs.

[0050] In addition, there are some related technologies. Although a rack position sensor is adopted in a steer-by-wire steering gear, since the sensing block of the rack position sensor is rigidly fixed on the rack, theoretically, a linear relative displacement should occur between the sensing block and the induction coil on the PCB. However, since a bending moment will be generated when the rack is stressed, a relative displacement along an arc occurs between the sensing block and the induction coil on the PCB. On the one hand, it will cause the position of the sensing block to shift, and on the other hand, it will cause the air gap between the sensing block and the induction coil to increase, resulting in signal distortion. The farther the rack position sensor moves, the more obvious the distortion is. The displacement can only be designed within a maximum range of ±30 mm, and the measurement distance is limited, so it cannot be widely applied to the steer-by-wire steering gear.

[0051] The following will describe embodiments of the present invention in conjunction with Figures 1 to 5 .

[0052] According to an embodiment of the present invention, on the one hand, a rack position sensor is provided, which is suitable for detecting the position of the rack 12; the rack position sensor includes:

[0053] A sensor body 2, inside which a detection circuit board 24 is provided;

[0054] A fixed sensing block 21, which is used for fixedly connecting with the rack 12, and the fixed sensing block 21 is suitable for moving along with the rack 12 to move relative to the detection circuit board 24;

[0055] A driven sensing block 23, which is arranged separately from the fixed sensing block 21, and an abutting end face 231 is formed on one side of the driven sensing block 23 facing the detection circuit board 24;

[0056] A flexible connecting member 22, which is arranged between the fixed sensing block 21 and the driven sensing block 23;

[0057] A sensor slide plate 25 is formed on one side of the sensor body 2 where the detection circuit board 24 faces the driven sensing block 23, and the abutting end face 231 is suitable for abutting against the sensor slide plate 25 and moving relative to the sensor slide plate 25.

[0058] The rack position sensor is suitable for detecting the position of the rack 12. As shown in conjunction with Figure 1 and Figure 2 , the sensor body 2 is fixed on the steering gear body 1, the inside of the steering gear body 1 is hollow, and the rack 12 is suitable for passing through the inside of the steering gear body 1 and sliding relative to the steering gear body 1. Furthermore, the rack 12 is suitable for sliding relative to the sensor body 2.

[0059] Since the fixed induction block 21 is fixedly connected to the rack 12, the fixed induction block 21 is adapted to move along with the rack 12, that is, the fixed induction block 21 is adapted to slide relative to the sensor body 2. The driven induction block 23 is provided separately from the fixed induction block 21, and the driven induction block 23 is adapted to be at least partially snapped into the fixed induction block 21, so as to realize the synchronous movement of the driven induction block 23 and the fixed induction block 21.

[0060] Meanwhile, a flexible connecting member 22 is provided between the fixed induction block 21 and the driven induction block 23. Due to the existence of the flexible connecting member 22, the driven induction block 23 can remain relatively independent when the rack is bent, so that the abutting end face 231 of the driven induction block 23 is always in close contact with the sensor slide plate 25, thereby effectively alleviating the influence of the bending moment generated when the rack 12 is stressed and bent, ensuring that the relative displacement between the driven induction block 23 and the detection circuit board 24 remains linear, reducing signal distortion, and improving the measurement accuracy.

[0061] By adopting this setting form, it not only ensures the synchronous movement between the fixed induction block 21 and the driven induction block 23, but also effectively isolates the negative influence brought by the bending of the rack 12, avoiding the influence on the driven induction block 23 when the fixed induction block 21 is bent and deformed along with the rack 12, thereby ensuring the stable contact between the sensor slide plate 25 and the abutting end face 231, further improving the accuracy and reliability of the rack position detection; it is convenient to realize the rack position detection with a larger movement range, adapt to complex working conditions, and broaden the application range. It effectively compensates for the displacement deviation caused by the bending of the rack 12, effectively reduces the air gap change between the induction block and the detection circuit board 24, ensures the stability of the air gap between the induction block and the detection circuit board 24, and further ensures the accuracy of the signal.

[0062] The rack position sensor provided by the embodiment of the present invention can be well applied to a steer-by-wire steering gear, avoiding the scheme of converting the rack position by using an angle sensor, thereby simplifying the system structure, eliminating the need for software redundancy design, and without adding extra parts, reducing costs, improving the system response speed, and enhancing the accuracy and stability of steering control; at the same time, it solves the problem that other rack position sensors in the related art cannot be applied to the steer-by-wire steering gear due to poor accuracy after being stressed. It is applicable to the efficient and safe driving requirements of various vehicles.

[0063] The sensor body 2 can specifically be a non-contact sensor, and principles such as the Hall effect, magnetoresistive, and potentiometer are used for position detection. For example, the sensor body 2 can adopt the Hall effect principle to accurately obtain the position of the rack 12 by detecting the magnetic field change on the driven induction block 23.

[0064] In this embodiment, a detection circuit board 24 is provided inside the sensor body 2. An induction coil is arranged on the detection circuit board 24. The induction coil captures the magnetic field change of the driven induction block 23 and transmits signals to the detection circuit board 24 in real time. After processing, accurate position data is output.

[0065] In some embodiments, the flexible connecting member 22 includes a spring, and the spring is compressively arranged between the fixed induction block 21 and the driven induction block 23.

[0066] By compressively arranging the spring between the fixed induction block 21 and the driven induction block 23, the spring can adaptively expand and contract when the rack bends, and can always tightly press the driven induction block 23, ensuring that the driven induction block 23 still maintains close contact with the sensor slide plate 25 when the rack 12 bends. Thus, the displacement error caused by the bending of the rack 12 can be effectively offset, the influence of the bending moment can be further buffered, the accuracy and reliability of signal transmission can be improved, and the requirements of a wider range of working conditions can be met.

[0067] Through the elastic adjustment of the spring, not only the dynamic stability between the fixed induction block 21 and the driven induction block 23 is enhanced, but also the sensitivity of the sensor to the micro-deformation of the rack 12 is significantly improved, ensuring the real-time and accuracy of the position data of the rack 12 under complex driving conditions, and further optimizing the overall performance of the steer-by-wire system.

[0068] Additionally, whether the rack 12 is bent under force or there are dimensional or shape tolerance problems such as straightness of the rack 12, the driven induction block 23 can always be in close fit with the sensor slide plate 25, keeping the distance from the induction coil unchanged, ensuring that the magnetic field change captured by the induction coil is not distorted, so as to accurately reflect the actual position of the rack 12 and improve the sensor accuracy.

[0069] As a variation, the flexible connecting member 22 can also be an elastomer such as rubber.

[0070] In some embodiments, the driven induction block 23 is formed with a contact portion 232, and the contact portion 232 is adapted to at least partially extend into the fixed induction block 21.

[0071] By providing the contact portion 232 and making the contact portion 232 at least partially extend into the fixed induction block 21, it is convenient to realize the synchronous movement of the driven induction block 23 following the fixed induction block 21, thereby enhancing the mechanical coupling between the fixed induction block 21 and the driven induction block 23, facilitating the formation of a stable fitting structure, further enhancing the relative position fixation between the two, effectively reducing the relative displacement caused by external impact or vibration, ensuring that the sensor can stably and accurately detect the position change of the rack 12 under different working conditions, and improving the overall anti-interference ability of the system.

[0072] In some embodiments, the fixed induction block 21 and / or the driven induction block 23 are provided with mounting grooves 201, and the springs are adapted to be mounted in the mounting grooves 201.

[0073] Through the precise limitation of the mounting groove 201, it is ensured that the spring can still maintain a uniform elastic force distribution in the compressed state, further optimizing the supporting effect of the spring on the driven induction block 23 and enhancing the stability and durability of the sensor in a complex environment.

[0074] In this embodiment, the spring is mounted in the mounting groove 201, and specifically, an interference fit or a transition fit dimension relationship can be adopted.

[0075] Additionally, the setting form of the mounting groove 201 can also be adjusted according to actual requirements to adapt to springs of different specifications, ensuring that it can provide stable elastic force support under various working conditions.

[0076] In some embodiments, both the abutting end face 231 and the sensor slide plate 25 are configured as planes.

[0077] By configuring both the abutting end face 231 and the sensor slide plate 25 as planes, the contact method between the two is simplified, the contact precision is improved, ensuring the smooth operation of the driven induction block 23 during dynamic movement, and further enhancing the sensitivity and response speed of the sensor to the position change of the rack 12.

[0078] Avoiding the air gap change caused by the uneven contact surface, ensuring the stability of the air gap between the induction block and the detection circuit board 24, and thus ensuring the accuracy of the signal.

[0079] In some embodiments, in the direction perpendicular to the plane where the sensor slide plate 25 is located, the distance between the end face of the sensor slide plate 25 and the detection circuit board 24 remains unchanged.

[0080] By precisely controlling this distance, signal interference caused by distance fluctuations is effectively avoided, further improving the detection accuracy and stability of the sensor for the position change of the rack 12.

[0081] According to an embodiment of the present invention, on the other hand, a steer-by-wire steering gear is further provided, including:

[0082] A steering gear body 1, inside which a rack 12 is provided, and the rack 12 is adapted to move relative to the steering gear body 1;

[0083] And the rack position sensor as described above.

[0084] In some embodiments, the steering gear body 1 includes a housing 11, the housing 11 is provided with a mounting cavity 101, and at least a part of the fixed induction block 21 is located in the mounting cavity 101;

[0085] The sensor body 2 is connected to the housing 11; the sensor body 2 and the housing 11 jointly enclose a guiding cavity 102, and the guiding cavity 102 is adapted to form a guide for the movement of the fixed sensing block 21 and / or the driven sensing block 23.

[0086] The sensor body 2 and the housing 11 jointly enclose a guiding cavity 102, and the guiding cavity 102 is adapted to form a guide for the movement of the fixed sensing block 21 and / or the driven sensing block 23, ensuring that the sensing block maintains a stable trajectory during movement, reducing friction and wear.

[0087] Optionally, the fixed sensing block 21 and the driven sensing block 23 match the shape of the inner wall of the guiding cavity 102 in the moving direction, thereby avoiding deviation during movement, effectively reducing the change in the air gap between the sensing block and the detection circuit board 24, improving the relative position accuracy between the sensing block and the rack 12, ensuring that the response of the steering gear body 1 is more sensitive and accurate, and further optimizing the performance and reliability of the overall steering system.

[0088] In some embodiments, the rack 12 is provided with an assembly groove 121, and the fixed sensing block 21 is adapted to be installed in the assembly groove 121.

[0089] It further includes: a fixing member 202, and the fixed sensing block 21 and the rack 12 are fixedly connected via the fixing member 202.

[0090] The fixed sensing block 21 is tightly connected to the rack 12 through the fixing member 202, ensuring the relative position stability between the fixed sensing block 21 and the rack 12, avoiding signal errors caused by loosening, and further improving the accuracy and reliability of the steering system.

[0091] According to an embodiment of the present invention, on the other hand, a vehicle is further provided, including: wheels; steering knuckles;

[0092] And the steer-by-wire steering gear as described above; the wheels are connected to the steer-by-wire steering gear via the steering knuckles.

[0093] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. Although the embodiments of the present invention are described in conjunction with the drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the present invention.

Claims

1. A rack position sensor, characterized in that, Suitable for detecting the position of the rack (12); the rack position sensor includes: A sensor body (2) with a detection circuit board (24) disposed therein; A fixed induction block (21) for fixedly connecting with the rack (12), and the fixed induction block (21) is adapted to move with the rack (12) to move relative to the detection circuit board (24); A driven induction block (23) which is separately arranged from the fixed induction block (21), and an abutting end face (231) is formed on one side of the driven induction block (23) facing the detection circuit board (24); A flexible connecting member (22) disposed between the fixed induction block (21) and the driven induction block (23); A sensor slide plate (25) is formed on the side of the detection circuit board (24) facing the driven induction block (23) of the sensor body (2), and the abutting end face (231) is adapted to abut against the sensor slide plate (25) and move relative to the sensor slide plate (25).

2. The rack position sensor according to claim 1, characterized in that The flexible connecting member (22) includes a spring which is compressively disposed between the fixed induction block (21) and the driven induction block (23).

3. The rack position sensor according to claim 2, wherein, The driven induction block (23) is formed with a contact portion (232), and the contact portion (232) is adapted to at least partially extend into the fixed induction block (21).

4. The rack position sensor according to claim 2, characterized in that, The fixed induction block (21) and / or the driven induction block (23) are provided with mounting grooves (201), and the spring is adapted to be mounted in the mounting grooves (201).

5. The rack position sensor according to claim 1, characterized in that, Both the abutting end face (231) and the sensor slide plate (25) are configured as planes.

6. The rack position sensor according to claim 1, characterized in that In the direction perpendicular to the plane where the sensor slide plate (25) is located, the distance between the end face of the sensor slide plate (25) and the detection circuit board (24) remains unchanged.

7. A steer-by-wire steering gear, characterized in that, Includes: A steering gear body (1) with a rack (12) disposed inside the steering gear body (1), and the rack (12) is adapted to move relative to the steering gear body (1); And the rack position sensor according to any one of claims 1 to 6 above.

8. The steer-by-wire steering gear according to claim 7, wherein, The steering gear body (1) includes a housing (11), the housing (11) is provided with a mounting cavity (101), and at least a part of the fixed induction block (21) is located in the mounting cavity (101); The sensor body (2) is connected to the housing (11); the sensor body (2) and the housing (11) jointly enclose a guiding cavity (102), and the guiding cavity (102) is adapted to form a guide for the movement of the fixed induction block (21) and / or the driven induction block (23).

9. The steer-by-wire steering gear according to claim 7, characterized in that, The rack (12) is provided with an assembly groove (121), and the fixed induction block (21) is adapted to be mounted in the assembly groove (121); the fixed induction block (21) and the rack (12) are fixedly connected via a fixing member (202).

10. A vehicle, characterized in that, Includes: A wheel; A steering knuckle; And the steer-by-wire steering gear according to any one of claims 7 to 9 above; The wheel is connected to the steer-by-wire steering gear via the steering knuckle.

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