Displacement sliding block, displacement detection device, steering assembly and vehicle

Abstract

The embodiment of the invention provides a displacement sliding block, a displacement detection device, a steering assembly and a vehicle. The displacement sliding block comprises a sliding block body; part of the sensing element is arranged in the sliding block body, and part of the sensing element is exposed out of the sliding block body; the sliding block body and the sensing element are of an integrally-formed structure. According to the embodiment of the invention, the sliding block body and the metal sheet are integrally formed, so that the relative position precision between the sliding block body and the sensing element is improved, and the measurement precision of the displacement sensor is further improved.

Description

Technical Field

[0001] The present application belongs to the field of sensor technology, and specifically relates to a displacement sliding block, a displacement detection device, a steering assembly and a vehicle. Background Art

[0002] The displacement detection device is usually used to detect the linear displacement of the measured object. For example, in the rear wheel steering system of a vehicle, the displacement detection device can be used to detect the linear displacement of the measured object such as the transmission rod in the steering actuator that performs linear motion to calculate the steering angle of the rear wheel.

[0003] In the prior art, a displacement sliding block is usually movably connected to a displacement detection device, a sensing element is connected to the displacement sliding block, a measured object is connected to the displacement sliding block, the measured object drives the displacement sliding block to move on the displacement detection device, and the displacement detection device detects the linear displacement of the measured object through the sensing element on the displacement sliding block. However, the relative position accuracy between the existing displacement sliding block and the sensing element is low, thereby reducing the measurement accuracy of the displacement detection device. Summary of the invention

[0004] The present application aims to provide a displacement sliding block and a vehicle to solve the problem of low relative position accuracy between the existing displacement sliding block and the sensing element.

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

[0006] In a first aspect, the present application discloses a displacement sliding block, which is applied to a displacement detection device. The displacement sliding block comprises:

[0007] Sliding block body;

[0008] A sensing element, wherein the sensing element is partially disposed in the sliding block body and partially exposed outside the sliding block body;

[0009] Wherein, the sensing element and the sliding block body are integrally formed.

[0010] Optionally, the sliding block body and the metal sheet are an integral injection-molded structure.

[0011] Optionally, the sensing element includes a connecting portion and a sensing portion, the connecting portion is embedded in the sliding block body, the sensing portion is exposed from the sliding block body, and the sensing portion is used to fit with a detection panel of the displacement detection device.

[0012] Optionally, the sensing element is a metal sheet, a portion of the metal sheet is bent to form the connecting portion, and another portion forms the sensing portion.

[0013] Optionally, there are at least two connecting parts, and the two connecting parts are respectively located on both sides of the sensing part.

[0014] Optionally, at least one first through hole is provided on the connecting portion.

[0015] Optionally, the sliding block body includes a bottom wall, the connecting portion is embedded in the bottom wall, and the sensing portion covers a portion of the bottom wall and is exposed from the bottom wall.

[0016] Optionally, a portion of the bottom wall covered by the sensing portion is provided with at least one second through hole.

[0017] Optionally, a portion of the bottom wall not covered by the sensing portion is provided with at least one first accommodating groove, and the first accommodating groove is used to store grease.

[0018] Optionally, the portion of the bottom wall not covered by the sensing portion is further provided with at least two second accommodating grooves, and the at least two second accommodating grooves are respectively provided on both sides of the sensing portion, and the second accommodating grooves are used to locate the position of the sensing portion.

[0019] Optionally, the sliding block body further includes a side wall, wherein the side wall is connected to the bottom wall, and the side wall encloses a receiving hole, and the receiving hole is used to connect to the measured object.

[0020] Optionally, a third accommodating groove is provided on at least one outer side of two side walls that are arranged opposite to each other along a direction perpendicular to the moving direction of the sliding block body.

[0021] Optionally, there are a plurality of the third accommodating grooves, and the plurality of the third accommodating grooves are respectively arranged on both sides of the side wall along the moving direction of the sliding block body.

[0022] Optionally, a third through hole is provided on a side of the side wall close to the sensing element.

[0023] Optionally, a plurality of reinforcing ribs are arranged at intervals on the side wall, and the reinforcing ribs are connected to the bottom wall.

[0024] Optionally, the side wall is provided with at least one opening, the opening extends on the side wall, and the opening penetrates the side wall at a side away from the bottom wall.

[0025] Optionally, the opening is arranged on at least one side wall of two side walls that are arranged opposite to each other along the moving direction of the sliding block body.

[0026] Optionally, the reinforcing ribs are respectively provided on both sides of the opening.

[0027] Optionally, two reinforcing ribs on both sides of the opening are connected to each other at one end close to the sensing element.

[0028] Optionally, the sensing portion includes a sensing surface, and the sensing surface is suitable for being attached to a detection panel of the displacement detection device.

[0029] The area of ​​the sensing surface is more than 90% of the sum of all surfaces of the sensing portion exposed on the sliding block body.

[0030] Optionally, the thickness of the sensing portion is less than or equal to 1 mm.

[0031] Optionally, the length of the sensing portion in the moving direction of the sliding block body is 4 mm to 200 mm.

[0032] Optionally, the sensing element is a metal sheet, and the thickness of the sensing portion / the thickness of the bottom wall is ≤50%.

[0033] Optionally, the thickness of the sensing portion / the length of the sensing portion in the moving direction of the sliding block body is ≤25%.

[0034] Optionally, a sliding groove is provided on the sliding block body, and the sliding groove is used for sliding connection with the displacement detection device.

[0035] Optionally, the sliding groove is arranged on a side of the sliding block body close to the sensing element.

[0036] In a second aspect, the present application further discloses a displacement detection device, the displacement detection device comprising: a sensor body;

[0037] And the displacement sliding block described in any one of the above items, wherein the displacement sliding block is movably connected to the sensor body.

[0038] Optionally, the sensor body includes a protective cover, a slide rail is provided on the protective cover, and the slide groove of the displacement sliding block is slidably connected to the slide rail.

[0039] Optionally, there are two slide rails, and the two slide rails are spaced apart on the protective cover. The portion of the protective cover between the two slide rails forms a detection panel, and the sensing portion of the displacement sliding block is in contact with the detection panel.

[0040] Optionally, the protective cover is further provided with two blocking members, and the two blocking members are respectively located on both sides of the slide rail along the moving direction of the displacement sliding block to limit the travel of the displacement sliding block.

[0041] In a third aspect, the present application further discloses a steering assembly, comprising: a displacement detection device as described in any one of the above items.

[0042] In a third aspect, the present application further discloses a vehicle, comprising: the displacement detection device described in any one of the above items or the displacement detection device described in any one of the above items.

[0043] In the embodiment of the present application, the sliding block body and the sensing element are integrally formed so that the sliding block body and the sensing element are an integrated structure, thereby reducing errors caused by manual assembly or mechanical assembly, and improving the relative position accuracy between the sliding block body and the sensing element, thereby improving the measurement accuracy of the displacement sensor.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 It is a structural schematic diagram of a displacement sliding block shown in an embodiment of the present application;

[0047] Figure 2 It is a schematic diagram of the structural decomposition of a displacement sliding block shown in an embodiment of the present application;

[0048] Figure 3 is a schematic diagram of the structural decomposition of a displacement detection device according to an embodiment of the present application;

[0049] Figure 4 It is a schematic diagram of the structure of a protective cover shown in an embodiment of the present application.

[0050] Figure numerals: 1-displacement sliding block; 10-sliding block body; 101-bottom wall; 1011-first accommodating groove; 1012-second through hole; 1013-second accommodating groove; 1014-groove; 102-side wall; 1021-third accommodating groove; 1022-opening; 1023-reinforcing rib; 1024-third through hole; 103-accommodating hole; 104-slide groove; 20-sensing element; 201-sensing part; 2010-sensing surface; 2011-side; 202-connecting part; 203-first through hole; 2-protective cover; 21-slide rail; 22-blocking member; 3-circuit board; 4-housing; 5-electrical connector; 6-sealing ring. DETAILED DESCRIPTION

[0051] Embodiments of the present invention will be described in detail below, examples of which 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 invention, and should not be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] The term "first" or "second" in the specification and claims of the present application may include one or more of the features explicitly or implicitly. In the description of the present invention, 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.

[0053] In the description of the present invention, it is to 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”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention 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 limiting the present invention.

[0054] In the description of the present invention, 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 the present invention can be understood according to specific circumstances.

[0055] The present application embodiment provides a displacement sliding block, specifically, the displacement sliding block can be used in a displacement detection device, and in practical applications, the displacement detection device can be a linear displacement detection device. The displacement sliding block of the present application embodiment is described in detail below in conjunction with the accompanying drawings.

[0056] Reference Figure 1 and Figure 2The displacement sliding block 1 described in the embodiment of the present application may specifically include: a sliding block body 10; and a sensing element 20, wherein the sensing element 20 is partially disposed in the sliding block body 10 and partially exposed from the sliding block body 10; wherein the sliding block body 10 and the sensing element 20 are an integrally formed structure.

[0057] Specifically, the sliding block body 10 is used to connect with the object to be tested, and the sensing element 20 is made of metal material. A part of the sensing element 20 is embedded in the sliding block body 10, and the sensing element 20 can be fixedly connected to the sliding block body 10. The object to be tested drives the sliding block body 10 and the sensing element 20 to move to generate a linear displacement. The other part is exposed from the sliding block body 10, and cooperates with the detection panel of the displacement detection device. The sensing element 20 can generate eddy currents in the alternating magnetic field generated by the displacement detection device. The eddy currents will generate an alternating magnetic field in the opposite direction, resulting in a change in the induced voltage, and then the position of the sensing element 20 can be detected according to the induced voltage, and then the linear displacement of the object to be tested can be calculated.

[0058] In the related art, the sensing element is usually pasted or fixed on the sliding block body by manual assembly or mechanical assembly, but both manual assembly and mechanical assembly will produce errors, making it difficult to ensure a high position accuracy between the sensing element and the sliding block body, which will increase the error of the measurement result and reduce the measurement accuracy of the displacement detection device. In the embodiment of the present application, the sliding block body 10 and the sensing element 20 are integrally formed, so that the sliding block body 10 and the sensing element 20 are an integrated structure, which reduces the errors caused by manual assembly or mechanical assembly, and can improve the relative position accuracy between the sliding block body 10 and the sensing element 20, thereby improving the measurement accuracy of the displacement sensor.

[0059] Optionally, the sliding block body 10 and the sensing element 20 are an integral injection-molded structure.

[0060] Specifically, the sliding block body 10 and the sensing element 20 can be made into an integral structure through an injection molding process. During injection molding, the sensing element 20 is first placed at a predetermined position of the injection mold, and the sensing element 20 is fixed by a positioning device to prevent the sensing element 20 from being displaced during the injection molding process. The molten plastic material is injected into the mold, and the plastic material fills the mold cavity under high temperature and high pressure, and is combined with the sensing element 20. After the injection molding is completed, the plastic material in the mold gradually cools and solidifies to form an integrally formed sliding block body 10 and sensing element 20. In actual applications, the sliding block body 10 and the sensing element 20 are made into an integrally formed structure through an integral injection molding process. Since the injection molding process is a relatively simple and low-cost process, the cost of the displacement sliding block 1 can be reduced.

[0061] Optionally, the sensing element 20 includes a sensing portion 201 and a connecting portion 202 , wherein the connecting portion 202 is embedded in the sliding block body 10 , and the sensing portion 201 is exposed from the sliding block body 10 , and the sensing portion 201 is used to fit with a detection panel of the displacement detection device.

[0062] Specifically, the sensing part 201 and the connecting part 202 are connected to each other, and the sensing part 201 and the connecting part 202 can be arranged at an angle. The connecting part 202 can be embedded in the sliding block body 10 by the injection molding process, and plays the role of fixing and supporting the sensing part 201. The sensing part 201 is exposed to the sliding block body 10 and cooperates with the detection panel of the displacement detection device. In practical applications, by embedding the connecting part 202 in the sliding block body 10, the sensing part 201 is exposed to the sliding block body 10, and is used to fit with the detection panel of the displacement detection device. This design not only ensures the direct contact and detection accuracy of the sensing part 201, but also improves the rigidity and stability of the overall structure through the embedded design of the connecting part 202, further reduces the displacement error during the sliding process, and improves the reliability and consistency of the measurement. In addition, since the sensing element 20 includes the connecting part 202 and the sensing part 201, the connection area between the sensing element 20 and the plastic material can be increased during the injection molding process, thereby improving the reliability of the connection between the sensing element 20 and the sliding block body 10.

[0063] In some optional embodiments, the sensing element 20 is a metal sheet, a portion of the metal sheet is bent to form the connecting portion 202 , and another portion forms the sensing portion 201 .

[0064] Specifically, if Figure 2 As shown, the sensing element 20 is a metal sheet structure, a part of the sensing element 20 is bent at a preset angle to form a connecting portion 202, and the remaining part forms a sensing portion 201, wherein the preset angle can be any angle, preferably, the angle is 90 degrees. The connecting portion 202 is completely embedded in the interior of the sliding block body 10, and a part of the surface of the sensing portion 201 can be embedded in the interior of the sliding block body 10 together with the connecting portion 202, and the other part of the surface needs to be exposed to the sliding block body 10 to cooperate with the detection panel of the displacement detection device. In this embodiment, the connecting portion 202 and the sensing portion 201 are formed by the deformation of the metal sheet itself, and the connection area between the sensing element 20 and the plastic material can be increased during the injection molding process, thereby improving the reliability of the connection between the sensing element 20 and the sliding block body 10, reducing the displacement error during the sliding process, and ensuring the measurement accuracy. And there is no need to set additional fixings, which reduces the cost of the displacement sliding block 1.

[0065] Optionally, there are at least two connecting parts 202 , and the two connecting parts 202 are respectively located on two sides of the sensing part 201 .

[0066] Specifically, the sensing element 20 may be in any shape such as a rectangle or a triangle, and the number of the connecting parts 202 may be 2, 3, 4, etc. For example, Figure 2 As shown, two opposite ends of the rectangular sensing element 20 can be bent to form two connecting parts 202, and the portion between the two connecting parts 202 forms the sensing part 201, or the four ends of the rectangular sensing element 20 can be bent to form four connecting parts 202. In practical applications, by forming at least two connecting parts 202 and embedding the two connecting parts 202 inside the sliding block body 10, the connection area between the sensing element 20 and the plastic material can be further increased, thereby further improving the reliability of the connection between the sensing element 20 and the sliding block body 10.

[0067] The number of the connecting parts 202 may be 2, 3, 4, etc., which may be selected according to actual needs, and the embodiment of the present application does not make any specific limitation on this.

[0068] Optionally, a plurality of first through holes 203 are arranged at intervals on the connecting portion 202. Figure 2 As shown, the sensing element 20 can be stamped, and a plurality of first through holes 203 can be formed on the connecting portion 202 by stamping. In this embodiment, by providing a plurality of first through holes 203 on the connecting portion 202, during the injection molding process, the plastic material will flow into these first through holes 203, and the plastic in the first through holes 203 can play a role in fixing the sensing element 20, further increasing the contact area between the sensing element 20 and the plastic material, and further improving the reliability of the connection between the sensing element 20 and the sliding block body 10.

[0069] Optionally, the sliding block body 10 includes a bottom wall 101 , the connecting portion 202 is embedded in the bottom wall 101 , and the sensing portion 201 covers a portion of the bottom wall 101 and is exposed from the bottom wall 101 .

[0070] Specifically, Figure 1-Figure 2 As shown, the connecting portion 202 can be embedded in the interior of the bottom wall 101 by an injection molding method to fix the sensing portion 201 on the bottom surface of the bottom wall 101, and the sensing portion 201 is exposed on the bottom wall 101. In practical applications, by arranging the connecting portion 202 and the sensing portion 201 on the bottom wall 101, a stable surface is provided by the bottom wall 101 to fix the connecting portion 202 and the sensing portion 201, so that the sensing portion 201 can be more conveniently contacted with the detection panel of the displacement detection device, and the sensing portion 201 covering a portion of the bottom wall 101 can increase the contact area between the sensing element 20 and the sliding block body 10, further improving the reliability of the connection, and thus improving the measurement accuracy.

[0071] In some optional embodiments, at least one second through hole 1012 is provided in a portion of the bottom wall 101 covered by the sensing portion 201 .

[0072] Specifically, the second through hole 1012 passes through the bottom wall 101, and the number of the second through holes can be 1, 2, 3, etc. The sensing portion 201 and the connecting portion 202 can be integrally formed with the bottom wall 101 by injection molding. During the injection molding process, the sensing element 20 is placed in the injection mold, and the sensing element 20 is pressed by a pin passing through the second through hole 1012 to fix it at the bottom of the injection mold. In this way, the sensing element 20 can be prevented from moving up and down along the height direction of the bottom wall 101 during the injection molding process, and the exposed portion of the sensing element 20 is ensured to be in the same plane as the bottom surface of the bottom wall 101, so as to prevent the plastic material from covering the exposed portion of the sensing element 20 during the injection molding process, resulting in production defects and affecting the operation of the displacement detection device.

[0073] Furthermore, a portion of the bottom wall 101 not covered by the sensing portion 201 is provided with at least one first receiving groove 1011 , and the first receiving groove 1011 is used to store grease.

[0074] Specifically, the first receiving groove 1011 is arranged in the part of the bottom wall 101 not covered by the sensing part 201. The number of the first receiving grooves 1011 can be 1, 2, 3, etc. The number of the first receiving grooves 1011 can be set according to actual needs. The embodiment of the present application does not make any specific limitation on this.

[0075] The bottom surface of the bottom wall 101 is concave to form a plurality of first receiving grooves 1011, which are respectively arranged on both sides of the sensing portion 201 along the moving direction of the sliding block body 10. Grease is stored in the first receiving grooves 1011, so that when the displacement sliding block 1 moves on the detection panel of the displacement detection device, the grease in the first receiving grooves 1011 can be coated on the surface of the detection panel as the displacement sliding block 1 moves, which can reduce the friction force when the displacement sliding block 1 slides, making the movement of the displacement sliding block 1 smoother. In addition, when the displacement sliding block 1 moves, the first receiving grooves 1011 can also accommodate fine impurities to prevent the displacement sliding block 1 from being stuck due to impurities, thereby ensuring the normal operation of the displacement sliding block 1.

[0076] The portion of the bottom wall 101 not covered by the sensing portion 201 is further provided with at least two second receiving grooves 1013 , and the at least two second receiving grooves 1013 are respectively provided on both sides of the sensing portion 201 , and the second receiving grooves 1013 are used to locate the position of the sensing portion 201 .

[0077] Specifically, the sensing element 20 can be embedded in the bottom wall 101 through the injection molding process. At least one second accommodating groove 1013 is respectively provided on both sides of the bottom wall 101 corresponding to the position of the sensing part 201. During the injection molding process, the sensing element 20 is placed in the injection mold, and the sensing element 20 is pressed by passing the ejector pin through the second through hole 1012 to fix it on the bottom wall 101 of the injection mold to prevent the sensing element 20 from moving up and down during the injection molding process. The second accommodating groove 1013 can cooperate with the protrusion of the injection mold. In this way, the left and right movement of the sensing element 20 can be limited by the second accommodating groove 1013 to ensure that the sensing element 20 is located at the preset position of the sliding block body 10, thereby ensuring the position accuracy of the sensing element 20.

[0078] Optionally, the sliding block body 10 includes a side wall 102 , wherein the side wall 102 is connected to the bottom wall 101 , and the side wall 102 encloses a receiving hole 103 , and the receiving hole 103 is used to connect with the device under test.

[0079] Specifically, the side wall 102 and the bottom wall 101 can be integrally formed by injection molding, or fixedly connected by welding or other fixed methods. The side wall 102 encloses a receiving hole 103, which is used to connect with the object to be tested. A corresponding protrusion is provided on the object to be tested, and the protrusion can extend into the receiving hole 103 to achieve the connection between the object to be tested and the sliding block body 10. The receiving hole 103 can be circular, square or other shapes that can adapt to the object to be tested. In practical applications, the side wall 102 encloses the receiving hole 103, so that the object to be tested can be quickly and conveniently installed on the sliding block body 10, simplifying the installation process.

[0080] Optionally, a third receiving groove 1021 is provided on at least one outer side of two side walls 102 that are opposite to each other and perpendicular to the moving direction of the sliding block body 10 .

[0081] Specifically, there are four side walls 102, and the four side walls 102 enclose a rectangle. Two side walls 102 are relatively arranged along a direction parallel to the movement of the sliding block body 10, and the other two side walls 102 are relatively arranged along a direction perpendicular to the movement of the sliding block body 10. Among them, among the two side walls 102 relatively arranged along the direction perpendicular to the movement of the sliding block body 10, at least one side wall 102 is provided with a third accommodating groove 1021, and the shape of the third accommodating groove 1021 can be any shape such as cylindrical, rectangular, waist-shaped, etc. The third receiving groove 1021 extends on the side wall 102, and grease can be stored inside the third receiving groove 1021. When the measured object extends into the receiving hole 103, a corresponding connecting portion is set on the measured object, and the four side walls 102 are inserted into the connecting portion to realize a reliable connection between the measured object and the side wall 102. When the sliding block body 10 moves, friction will also be generated between the connecting portion and the side wall 102. By storing grease inside the third receiving groove 1021, the grease can also reduce the friction generated between the displacement sliding block 1 and the connecting portion when it slides, so that the movement of the displacement sliding block 1 is smoother. In addition, when the displacement sliding block 1 moves, the third receiving groove 1021 can also accommodate fine impurities to prevent the displacement sliding block 1 from being stuck due to impurities, thereby ensuring the normal operation of the displacement sliding block 1. In addition, by providing the third receiving groove 1021, the wall thickness of the side wall 102 can also be reduced, reducing the molding difficulty of the injection molding process.

[0082] Furthermore, there are a plurality of the third accommodating grooves 1021 , and the plurality of the third accommodating grooves 1021 are respectively disposed on both sides of the side wall 102 along the moving direction of the sliding block body 10 .

[0083] like Figure 1 and Figure 2 As shown, in two side walls 102 arranged opposite to each other along the moving direction perpendicular to the sliding block body 10, a plurality of third receiving grooves 1021 may be arranged on one side wall 102, and the third receiving grooves 1021 may be 2, 3, etc., and the specific number thereof may be specifically set according to the actual situation, and the plurality of third receiving grooves 1021 are arranged on both sides of the moving direction of the sliding block body 10. In practical applications, by arranging a plurality of third receiving grooves 1021 in the moving direction of the sliding block body 10, more grease can be provided when the sliding block body 10 moves, friction can be reduced, and fine impurities generated during the sliding process can be more effectively dispersed and accommodated, and the pressure of a single third receiving groove 1021 can be reduced, thereby improving the overall anti-impurity effect, better adapting to the sliding requirements of the sliding block body 10 in different directions, and ensuring that friction can be effectively reduced and impurities can be prevented from getting stuck during the entire sliding process. In the injection molding process, the wall thickness of the side wall 102 can also be further reduced to reduce the molding difficulty of the injection molding process.

[0084] Optionally, a third through hole 1024 is disposed on a side of the side wall 102 close to the sensing element 20 .

[0085] Specifically, the third through hole 1024 passes through the side wall 102 and is disposed on a side of the side wall 102 close to the sensing element 20. Figure 1 As shown, the third through hole 1024 can be set on the same side wall 102 as the third receiving groove 1021. In actual application, by setting the third through hole 1024 on the side of the side wall 102 close to the sensing element 20, when the tested object is inserted into the receiving hole 103, the air inside the receiving hole 103 can be discharged from the third through hole 1024, so that the tested object can be inserted into the bottom of the receiving hole 103 more smoothly.

[0086] In some optional embodiments, a plurality of reinforcing ribs 1023 are spaced apart on the side wall 102 , and the reinforcing ribs 1023 are connected to the bottom wall 101 .

[0087] Specifically, if Figure 1 As shown, there are four side walls 102, which enclose a rectangle. Two side walls 102 are arranged opposite to each other along a direction parallel to the movement of the sliding block body 10, and the other two side walls 102 are arranged opposite to each other along a direction perpendicular to the movement of the sliding block body 10. A plurality of reinforcing ribs 1023 are arranged at intervals on the two side walls 102 arranged along the direction parallel to the movement of the sliding block body 10. The reinforcing ribs 1023 can be integrally formed with the bottom wall 101 and the side walls 102 by injection molding, and the reinforcing ribs 1023 are used to improve the strength of the side walls 102 and the bottom wall 101. In practical applications, such as Figure 1 As shown, during the injection molding process, the reinforcing ribs 1023 can be integrally formed with the side wall 102, and the strength of the side wall 102 can be improved by the reinforcing ribs 1023. By providing the reinforcing ribs 1023, the rigidity of the side wall 102 can be improved, and then the strength of the sliding block body 10 can be improved, so that it is not easy to deform or damage when connected to the measured object, and the service life of the displacement sliding block 1 is extended. In addition, by providing the reinforcing ribs 1023, compared with the method of directly increasing the wall thickness of the side wall 102 to increase the strength of the side wall 102, the wall thickness of the side wall 102 can be reduced while ensuring the strength of the side wall 102, thereby reducing the molding difficulty of the injection molding process.

[0088] In some embodiments, the side wall 102 is provided with at least one opening 1022 , the opening extends on the side wall 102 , and the opening 1022 penetrates the side wall 102 at a side away from the bottom wall 101 .

[0089] Specifically, an opening 1022 can be provided on the side wall 102 where the reinforcing rib 1023 is provided, and the opening 1022 extends on the side wall 102. The lower end of the opening 1022 close to the bottom wall 101 does not penetrate the side wall 102, and the side away from the bottom wall 101 penetrates the side wall 102 to form a cantilever structure. The opening 1022 has a certain gap to provide a necessary interference when the tested piece is inserted into the receiving hole 103. In practical applications, by providing the opening 1022, the protrusion on the tested piece can provide a necessary interference when inserted into the receiving hole 103, so that the tested piece forms an interference fit with the receiving hole 103, thereby ensuring the reliability and tightness of the connection, and facilitating the connection between the tested piece and the receiving hole 103.

[0090] The number and size of the openings 1022 can be set according to actual conditions, and are not specifically limited in this embodiment of the present application.

[0091] In some optional embodiments, Figure 1 As shown, there can be two openings 1022, which are respectively arranged on two side walls 102 arranged opposite to each other and parallel to the sliding block body 10. In practical applications, the two oppositely arranged openings 1022 can provide double-sided interference, so that the connection between the tested piece and the receiving hole 103 is tighter and more reliable. In addition, the double openings 1022 can ensure that the tested piece is subjected to more uniform force on both sides during insertion and use, thereby reducing deformation or looseness caused by uneven force on one side.

[0092] Alternatively, if Figure 1 As shown, the two sides of the opening 1022 are respectively provided with the reinforcing ribs 1023. Specifically, the two reinforcing ribs 1023 are respectively provided on the two sides of the opening 1022, and the reinforcing ribs 1023 can improve the strength of the side wall 102 at the opening 1022. In this way, when the measured object is connected to the receiving hole 103, the risk of the sliding block body 10 breaking at the opening 1022 can be reduced, and the service life of the displacement sliding block 1 can be extended.

[0093] Further, such as Figure 1 As shown, the two reinforcing ribs 1023 on both sides of the opening 1022 are connected to each other at one end close to the sensing element 20. In practical applications, the lower ends of the two reinforcing ribs 1023 on both sides of the opening 1022 close to the sensing element 20 can be connected to each other by injection molding or other methods, so that the two reinforcing ribs 1023 are an integrated structure, further enhancing the strength of the side wall 102 at the opening 1022, reducing the risk of the sliding block body 10 breaking at the opening 1022, and extending the service life of the displacement sliding block 1.

[0094] In some optional embodiments, the sensing portion 201 includes a sensing surface 2010, which is suitable for fitting with a detection panel of the displacement detection device, and an area of ​​the sensing surface 2010 is more than 90% of the sum of all surfaces of the sensing surface 2010 exposed on the sliding block body.

[0095] like Figure 1 and Figure 2 As shown, the sensing portion 201 includes a vertically arranged side surface 2011 and a sensing surface 2010, and the side surface 2011 and the sensing surface 2010 are exposed on the bottom wall 101, wherein the sensing surface 2010 is exposed on the bottom surface of the bottom wall 101, and the sensing surface 2010 can be fitted with the detection panel of the displacement detection device, so that the sensing surface 2010 of the sensing element 20 can be protected, and the sensing surface 2010 can be prevented from rusting due to the entry of external moisture, thereby extending the service life of the sensing element 20 and improving the measurement accuracy and reliability of the displacement detection device. The area of ​​the sensing surface 2010 is more than 90% of the sum of the area of ​​the side surface 2011 and the area of ​​the sensing surface 2010, which can make the area of ​​the sensing surface 2010 larger, ensure that the sensing surface 2010 has a larger contact area with the detection panel of the displacement detection device, reduce the area of ​​the side surface 2011, and further reduce the damage of the sensing surface 2010 by external water vapor, extend the service life of the displacement sliding block, and the area of ​​the sensing surface 2010 can also reduce the measurement error caused by poor contact, thereby improving the measurement accuracy of the displacement sensor.

[0096] In some optional embodiments, the side surface 2011 of the sensing part 201 needs to contact the side surface of the slide rail in the displacement detection device. In order to reduce the friction between the two, lubricating oil or grease can be applied to the side surface 2011 of the sensing part 201. Further, in order to facilitate the application of lubricating oil, a groove 1014 can be provided on the side surface of the bottom wall 101 corresponding to the position of the side surface 2011 of the sensing part 201, and lubricating oil or grease can be stored inside the groove 1014. The groove depth of the groove 1014 can be specifically set according to actual conditions. For example, the groove depth of the groove 1014 can be 0.2 mm, so as to store some lubricating oil or grease.

[0097] In some optional embodiments, the thickness of the sensing portion 201 is less than or equal to 1 mm.

[0098] Specifically, the sensing surface 2010 of the sensing part 201 is on the same plane as the bottom surface of the bottom wall 101. The greater the thickness of the sensing part 201, the smaller the thickness of the corresponding bottom wall 101. The reduction in the thickness of the bottom wall 101 will cause the sensing part 201 to easily fall off from the bottom wall 101 during the movement of the sliding block body 10, making it impossible for the displacement detection device to accurately measure the displacement, thereby reducing the measurement accuracy. In actual applications, by making the thickness of the sensing part 201 less than or equal to 1 mm, the thickness of the sensing part 201 is reduced, the risk of the sensing part 201 falling off is reduced, and the measurement accuracy is improved.

[0099] Preferably, the thickness of the sensing portion 201 may be 0.5 mm or 0.2 mm, which can further reduce the thickness of the sensing portion 201 and improve the measurement accuracy.

[0100] Optionally, the length of the sensing part 201 in the moving direction of the sliding block body 10 is 4 mm to 200 mm. In practical applications, by making the length of the sensing part 201 in the moving direction of the sliding block body 10 between 4 mm and 200 mm, the length of the sensing part 201 in the moving direction of the sliding block body 10 can meet 30% to 50% of the measurement stroke of the displacement sensor, thereby ensuring the measurement accuracy of the displacement detection device. Preferably, the length can be 10 mm, which can further ensure the measurement accuracy of the displacement detection device.

[0101] In some optional embodiments, the sensing element 20 is a metal sheet, and the thickness of the sensing part 201 / the thickness of the bottom wall 101 is ≤50%. Specifically, the sensing element 20 is a metal sheet structure, and the unbent portion of the metal sheet forms the sensing part 201. When the ratio of the thickness of the sensing part 201 to the thickness of the bottom wall 101 is higher, it means that the thickness of the sensing part 201 is larger, and the corresponding thickness of the bottom wall 101 is smaller. The reduction in the thickness of the bottom wall 101 will cause the sensing part 201 to easily fall off from the bottom wall 101 during the movement of the sliding block body 10, so that the displacement detection device cannot accurately measure the displacement, and the measurement accuracy is reduced. In practical applications, by making the ratio of the thickness of the sensing part 201 to the thickness of the bottom wall 101 ≤50%, the thickness of the sensing part 201 is reduced, the thickness of the bottom wall 101 is increased, the risk of the sensing part 201 falling off is reduced, and the measurement accuracy is improved. Preferably, the thickness of the sensing portion 201 / the thickness of the bottom wall 101 is ≤25%, which can further reduce the risk of the sensing portion 201 falling off and improve the measurement accuracy.

[0102] Optionally, the thickness of the sensing part 201 / the length of the sensing part 201 in the moving direction of the sliding block body 10 is ≤25%. Specifically, the ratio of the thickness of the sensing part 201 to the length of the sensing part 201 in the moving direction of the sliding block body 10 is ≤25%, the sensing part 201 includes a vertically arranged side surface 2011 and a sensing surface 2010, the thickness of the sensing part 201 is the thickness of the side surface 2011, and the length of the sensing part 201 in the moving direction of the sliding block body 10 is the length of the side surface 2011. When the ratio of the thickness of the sensing part 201 to the length of the sensing part 201 in the moving direction of the sliding block body 10 is greater than 25%, the side surface 2011 will be too thick, which means that The greater the thickness of the sensing part 201, the smaller the thickness of the corresponding bottom wall 101. The reduced thickness of the bottom wall 101 will cause the sensing part 201 to easily fall off from the bottom wall 101 during the movement of the sliding block body 10, making it impossible for the displacement detection device to accurately measure the displacement, thereby reducing the measurement accuracy. In practical applications, by making the ratio of the thickness of the sensing part 201 to the length of the sensing part 201 in the moving direction of the sliding block body 10 ≤25%, the thickness of the sensing part 201 is reduced, the risk of the sensing part 201 falling off is reduced, and the measurement accuracy is improved.

[0103] In some optional embodiments, a slide groove 104 is provided on the sliding block body 10, and the slide groove 104 is used for sliding connection with the displacement detection device.

[0104] Specifically, a slide groove 104 is provided on the sliding block body 10, and a slide rail 21 is provided on the corresponding displacement detection device. The shape and number of the slide groove 104 are adapted to the shape and number of the slide rail 21. The slide groove 104 is slidably connected to the slide rail 21 to achieve a sliding connection between the displacement sliding block 1 and the displacement detection device. In practical applications, the slide groove 104 can provide precise guidance for the displacement detection device, ensuring that it slides along a predetermined path during the measurement process, reducing deviation and shaking, and improving the precision and accuracy of the measurement. In addition, directly providing the slide groove 104 on the side wall 102 can also reduce the thickness of the sliding block body 10, reduce the difficulty of injection molding, and reduce costs.

[0105] In some optional embodiments, the sliding groove 104 is disposed on a side of the sliding block body 10 close to the sensing element 20 .

[0106] Specifically, a slide groove 104 is provided on one side of the two side walls 102 that are relatively arranged along the moving direction perpendicular to the sliding block body 10 and close to the sensing element 20. The slide groove 104 extends on the side wall 102 along the moving direction of the sliding block body 10. In actual applications, by providing the slide groove 104 on one side of the sensing element 20, it is possible to facilitate the fitting of the sensing surface 2010 of the sensing part 201 with the displacement detection device and the detection panel.

[0107] In summary, the displacement sliding block 1 described in the embodiment of the present application may at least include the following advantages:

[0108] In the embodiment of the present application, the sliding block body 10 and the sensing element 20 are integrally formed so that the sliding block body 10 and the sensing element 20 are an integrated structure, thereby reducing errors caused by manual assembly or mechanical assembly, and improving the relative position accuracy between the sliding block body 10 and the sensing element 20, thereby improving the measurement accuracy of the displacement sensor.

[0109] The embodiment of the present application further discloses a displacement detection device, which includes: a sensor body; and a displacement sliding block 1 as described in any of the above embodiments, wherein the displacement sliding block 1 is movably connected to the sensor body.

[0110] It should be noted that in the embodiment of the present application, the structure of the displacement sliding block 1 is the same as the structure of the displacement sliding block 1 in any of the above embodiments, and its beneficial effects are also similar, which will not be described in detail here.

[0111] Reference Figure 3 and Figure 4 Optionally, the sensor body includes a protective cover 2 , a slide rail 21 is provided on the protective cover 2 , and the slide groove 104 of the displacement sliding block 1 is slidably connected to the slide rail 21 .

[0112] Specifically, the sensor body may include a housing 4, a circuit board 3, and an electrical connector 5; the circuit board 3 is fixedly arranged inside the housing 4 to protect the circuit board 3, one end of the electrical connector 5 extends into the housing 4 to be electrically connected to the circuit board 3, and the other end is used to connect to an external device, and the electrical connector 5 can provide a voltage through the circuit board 3 and output an analog signal, and the circuit board 3 is provided with a chip, an excitation coil, and an induction coil. After the chip is energized, it can drive the excitation coil to generate an alternating magnetic field, and the alternating magnetic field can generate eddy currents in the induction element 20 embedded in the displacement sliding block 1. The eddy current will generate an alternating magnetic field in the opposite direction to the excitation coil, so that the voltage amplitude induced by the induction coil changes, and the position of the induction element 20 can be detected according to the magnitude of the induced voltage, and then the linear displacement of the measured object can be calculated.

[0113] The protective cover 2 is arranged on the shell 4, which can close the shell 4 and protect the components inside the shell 4. By setting a slide rail 21 on the protective cover 2, it can be slidably connected with the slide groove 104 of the displacement sliding block 1. When the measured object is connected to the displacement sliding block 1, the displacement sliding block 1 can be driven to move on the slide rail 21 to generate a linear displacement of the measured object, which is convenient for measuring the linear displacement of the measured object.

[0114] It can be understood that the number of the slide grooves 104 matches the number of the slide rails 21 , and the number of the slide grooves 104 can be 1, 2, 3, etc., and can be flexibly set according to actual needs.

[0115] In some optional embodiments, there are two slide rails 21, and the two slide rails 21 are spaced apart on the protective cover 2. The portion of the protective cover 2 between the two slide rails 21 forms a detection panel, and the sensing portion 201 of the displacement sliding block 1 is in contact with the detection panel.

[0116] Specifically, Figure 3 and Figure 4 The number of the slide grooves 104 shown can be two, and the two slide grooves 104 are relatively arranged on the side wall 102, and the number of the corresponding slide rails 21 is also two. The two slide rails 21 are relatively arranged on the protective cover 2, and the surface of the protective cover 2 between the two slide rails 21 is a detection panel. When the slide grooves 104 are slidably connected with the slide rails 21, the sensing surface of the sensing element 20 exposed to the sliding block body 10 fits between the detection panel, so that the sensing surface of the sensing element 20 can be protected, and the sensing surface can be prevented from rusting due to the entry of external moisture, thereby extending the service life of the sensing element 20 and improving the measurement accuracy and reliability of the displacement detection device.

[0117] Optionally, the protection cover 2 is further provided with two blocking members 22 , and the two blocking members 22 are respectively located on both sides of the slide rail 21 to limit the travel of the displacement sliding block 1 .

[0118] Specifically, if Figure 3 and Figure 4 As shown, the protective cover 2 is provided with blocking members 22 on both sides of the slide rail 21 along the length direction of the slide rail 21, and the sliding block can be restricted by the blocking members 22. In practical applications, by providing two blocking members 22, the displacement sliding block 1 can be prevented from detaching from the protective cover 2, thereby causing the displacement sliding block 1 to detach from the effective sensing range of the displacement detection device, thereby ensuring the normal operation of the displacement detection device.

[0119] The specific structure of the blocking member 22 can be set according to actual needs. For example, a blocking member 22 can be as follows: Figure 4 The oblique buckle shown in the figure can be a buckle type, and the displacement sliding block 1 can be buckled into the slide rail 21 from the oblique buckle. Another blocking member 22 can be a boss, which protrudes upward on the protective cover 2, so that a receiving cavity is formed at the boss, and the receiving cavity can be used to accommodate the protruding part of the internal component of the shell 4 to avoid interference with components such as the circuit board 3 inside the shell 4.

[0120] In some optional embodiments, a sealing ring 6 is sleeved on the outer side of the housing 4 , and the sealing ring 6 can be used to ensure the sealing between the displacement detection device and the vehicle.

[0121] An embodiment of the present application further provides a steering assembly, which may specifically include the displacement detection device described in any of the above embodiments.

[0122] Specifically, the displacement detection device can be applied to the steering assembly of the vehicle. For example, in the rear-wheel steering system of the vehicle, the rear-wheel steering system usually drives the rear wheel to deflect by controlling the transmission rod through a driver. In this process, it is necessary to measure the linear displacement of the transmission rod, and the steering angle of the rear wheel can be calculated by the linear displacement. By extending the transmission rod into the accommodating hole 103 of the displacement sliding block 1, the transmission rod drives the displacement sliding block 1 to move on the slide rail 21, generating a linear displacement. The circuit board 3 can measure the position of the sliding block to calculate the linear displacement, thereby realizing the calculation of the steering angle of the rear wheel.

[0123] It should be noted that in the embodiment of the present application, the structure of the displacement detection device is the same as the structure of the displacement detection device in any of the above embodiments, and its beneficial effects are also similar, which will not be described in detail here.

[0124] An embodiment of the present application further provides a vehicle, which may specifically include the displacement detection device described in any of the above embodiments or the steering assembly described in the above embodiments.

[0125] It should be noted that in the embodiment of the present application, the structure of the displacement detection device is the same as the structure of the displacement detection device in any of the above embodiments, and its beneficial effects are also similar, which will not be described in detail here.

[0126] 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 invention. 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.

[0127] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A displacement sliding block, applied to a displacement detection device, characterized in that: The displacement sliding block comprises: Sliding block body; A sensing element, wherein the sensing element is partially disposed in the sliding block body and partially exposed outside the sliding block body; Wherein, the sensing element and the sliding block body are integrally formed.

2. The displacement sliding block according to claim 1, characterized in that: The sliding block body and the sensing element are an integral injection-molded structure.

3. The displacement sliding block according to claim 1, characterized in that: The sensing element comprises a connecting portion and a sensing portion, wherein the connecting portion is embedded in the sliding block body, and the sensing portion is exposed from the sliding block body, and the sensing portion is used to fit with a detection panel of the displacement detection device.

4. The displacement sliding block according to claim 3, characterized in that: The sensing element is a metal sheet, a portion of which is bent to form the connecting portion, and the other portion of which forms the sensing portion.

5. The displacement sliding block according to claim 4, characterized in that: There are at least two connecting parts, and the two connecting parts are respectively located at two sides of the sensing part.

6. The displacement sliding block according to any one of claims 3 to 5, characterized in that: The connecting portion is provided with at least one first through hole.

7. The displacement sliding block according to claim 3, characterized in that: The sliding block body comprises a bottom wall, the connecting portion is embedded in the bottom wall, and the sensing portion covers a portion of the bottom wall and is exposed from the bottom wall.

8. The displacement sliding block according to claim 7, characterized in that: A portion of the bottom wall covered by the sensing portion is provided with at least one second through hole.

9. The displacement sliding block according to claim 7, characterized in that: A portion of the bottom wall not covered by the sensing portion is provided with at least one first receiving groove, and the first receiving groove is used to store grease.

10. The displacement sliding block according to claim 7, characterized in that: The portion of the bottom wall not covered by the sensing portion is further provided with at least two second accommodating grooves, and the at least two second accommodating grooves are respectively provided on both sides of the sensing portion, and the second accommodating grooves are used to locate the position of the sensing portion.

11. The displacement sliding block according to claim 7, characterized in that: The sliding block body further comprises a side wall, wherein the side wall is connected to the bottom wall, and the side wall encloses a receiving hole, and the receiving hole is used to connect with the measured object.

12. The displacement sliding block according to claim 11, characterized in that: A third accommodating groove is arranged on at least one outer side of two side walls which are arranged opposite to each other along a direction perpendicular to the moving direction of the sliding block body.

13. The displacement sliding block according to claim 12, characterized in that: There are a plurality of the third accommodating grooves, and the plurality of the third accommodating grooves are respectively arranged on both sides of the side wall along the moving direction of the sliding block body.

14. The displacement sliding block according to claim 11, characterized in that: A third through hole is disposed on a side of the side wall close to the sensing element.

15. The displacement sliding block according to claim 11, characterized in that: A plurality of reinforcing ribs are arranged at intervals on the side wall, and the reinforcing ribs are connected to the bottom wall.

16. The displacement sliding block according to claim 15, characterized in that: The side wall is at least provided with at least one opening, the opening extends on the side wall, and the side of the opening away from the bottom wall passes through the side wall.

17. The displacement sliding block according to claim 16, characterized in that: The opening is arranged on at least one side wall of two side walls which are arranged opposite to each other along the moving direction of the sliding block body.

18. The displacement sliding block according to claim 16, characterized in that: The reinforcing ribs are respectively arranged on both sides of the opening.

19. The displacement sliding block according to claim 18, characterized in that: The two reinforcing ribs on both sides of the opening are connected to each other at one end close to the sensing element.

20. The displacement sliding block according to claim 4, characterized in that: The sensing portion includes a sensing surface, and the sensing surface is suitable for being attached to a detection panel of the displacement detection device. The area of ​​the sensing surface is more than 90% of the sum of all surfaces of the sensing portion exposed on the sliding block body.

21. The displacement sliding block according to claim 4, characterized in that: The thickness of the sensing part is less than or equal to 1 mm.

22. The displacement sliding block according to claim 4, characterized in that: The length of the sensing portion in the moving direction of the sliding block body is 4 mm to 200 mm.

23. The displacement sliding block according to claim 7, characterized in that: The sensing element is a metal sheet, and the thickness of the sensing portion / the thickness of the bottom wall is ≤50%.

24. The displacement sliding block according to claim 4, characterized in that: The thickness of the sensing portion / the length of the sensing portion in the moving direction of the sliding block body is ≤ 25%.

25. The displacement sliding block according to claim 1, characterized in that: The sliding block body is provided with a sliding groove, and the sliding groove is used for sliding connection with the displacement detection device.

26. The displacement sliding block according to claim 25, characterized in that: The sliding groove is arranged on a side of the sliding block body close to the sensing element.

27. A displacement detection device, characterized in that: The displacement detection device comprises: a sensor body; And the displacement sliding block according to any one of claims 1 to 26, wherein the displacement sliding block is movably connected to the sensor body.

28. The displacement detection device according to claim 27, characterized in that: The sensor body comprises a protective cover, a slide rail is arranged on the protective cover, and the slide groove of the displacement slide block is slidably connected to the slide rail.

29. The displacement detection device according to claim 28, characterized in that: There are two slide rails, which are spaced apart on the protective cover. The portion of the protective cover between the two slide rails forms a detection panel, and the sensing portion of the displacement sliding block is in contact with the detection panel.

30. The displacement detection device according to claim 29, characterized in that: The protection cover is further provided with two blocking members, which are respectively located on both sides of the slide rail along the moving direction of the displacement sliding block to limit the travel of the displacement sliding block.

31. A steering assembly, characterized in that: The steering assembly includes: a displacement detection device as described in any one of claims 27 to 30 above.

32. A vehicle, characterized in that: The vehicle comprises: the steering assembly described in claim 31 above or the displacement detection device described in any one of claims 27-30.

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