Displacement detection device, steering assembly and vehicle

Abstract

The embodiment of the utility model provides a displacement detection device, a steering assembly and a vehicle. The displacement detection device comprises: a housing; a circuit board, wherein the circuit board is arranged in the shell; at least part of the electric connecting piece is located in the shell, and the part, located in the shell, of the electric connecting piece is connected to the circuit board in an inserted mode. The displacement detection device provided by the embodiment of the utility model is high in reliability.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sensors, and particularly relates to a displacement detection device and a vehicle. BACKGROUND

[0002] The displacement detection device is generally used for detecting the linear displacement of a measured member. For example, in a rear wheel steering system of a vehicle, the linear displacement of a transmission rod or the like performing linear motion in a steering actuator can be detected by the displacement detection device to calculate the steering angle of the rear wheel.

[0003] In the prior art, the displacement detection device generally comprises a housing, a circuit board and an electrical connecting piece. The circuit board is arranged in the housing, and one end of the electrical connecting piece penetrates through the housing and is welded with the circuit board, and the other end is connected with an external device to provide power supply and transmit electrical signals for the electrical connecting piece. This kind of mode will affect the reliability of the circuit board, and further reduce the reliability of the displacement detection device. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a displacement detection device and a vehicle to solve the problem of low reliability of the existing displacement detection device.

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

[0006] In a first aspect, the application discloses a displacement detection device, which comprises:

[0007] a housing;

[0008] a circuit board arranged in the housing;

[0009] and an electrical connecting piece at least partially located in the housing, and the part of the electrical connecting piece located in the housing is inserted into the circuit board.

[0010] Optionally, the electrical connecting piece comprises a connecting terminal embedded in the housing, and the circuit board is inserted into the connecting terminal.

[0011] Optionally, the connecting terminal is integrally injection molded with the housing.

[0012] Optionally, the housing is further provided with a positioning column, the positioning column and the connecting terminal are arranged on two sides of the housing respectively, one end of the circuit board penetrates through the positioning column, and the other end penetrates through the connecting terminal to position the position of the circuit board in the housing.

[0013] Optionally, the shell is provided with a receiving cavity, the electric connecting member further comprises a connecting wire harness, the circuit board and the connecting terminal are arranged in the receiving cavity, and the connecting wire harness at least partially penetrates through the shell into the receiving cavity and is welded with the connecting terminal.

[0014] Optionally, further comprising a filling adhesive layer,

[0015] The filling adhesive layer is filled in the receiving cavity and covers at least the connecting part of the connecting wire harness and the connecting terminal.

[0016] Optionally, the receiving cavity comprises a first receiving cavity and a second receiving cavity which are isolated from each other;

[0017] The circuit board is arranged in the first receiving cavity, one part of the connecting terminal is electrically connected with the circuit board in the first receiving cavity, and the other part penetrates into the second receiving cavity, the connecting wire harness penetrates into the second receiving cavity and is welded with the connecting terminal, and the filling adhesive layer is filled in the second receiving cavity.

[0018] Optionally, the electric connecting member further comprises a connecting pipe and a connecting head;

[0019] One end of the connecting head is connected to the connecting part of the shell and the connecting wire harness, and the other end is connected to the connecting pipe, and the part of the connecting wire harness outside the shell is arranged in the connecting pipe.

[0020] Optionally, the electric connecting member further comprises a connecting joint and a plug, the connecting joint comprises two connecting ports arranged at an angle, one connecting port is connected with the connecting pipe, and the other connecting port is connected with the plug, the connecting wire harness penetrates through the connecting joint and is electrically connected with the plug, and the plug is used for electrically connecting with an external device.

[0021] Optionally, the shell has two side walls arranged oppositely and a bottom wall connected with the side walls, and two sides of the circuit board are fixedly connected with the two side walls respectively, so that the circuit board is fixedly arranged in the shell.

[0022] Optionally, a plurality of protruding parts are arranged at intervals on the side wall, the protruding parts on the two side walls are arranged oppositely, and the two sides of the circuit board are clamped between adjacent protruding parts.

[0023] Optionally, a plurality of supporting columns are arranged at intervals on the bottom wall, the circuit board abuts against the supporting columns, and the supporting columns are used for supporting the circuit board in the shell.

[0024] Optionally, a plurality of reinforcing ribs are arranged in the shell, and the reinforcing ribs are arranged between the supporting columns, the side walls and the bottom wall.

[0025] Optionally, the reinforcing ribs on the side wall extend at least partially in a direction away from the side wall to form the protruding portion.

[0026] Optionally, a protective cover is further included, which covers the shell to seal the shell.

[0027] Optionally, a boss is arranged on the protective cover at a position corresponding to the connecting terminal, and an accommodation cavity is arranged in the boss, and the connecting terminal is at least partially located in the accommodation cavity.

[0028] Optionally, a sliding block is further included, which is slidingly connected to the protective cover, and the sliding block is used to be connected with a measured member.

[0029] In a second aspect, the application further discloses a displacement detection device.

[0030] In a second aspect, the application further discloses a vehicle, which comprises the displacement detection device or the steering assembly.

[0031] In the embodiments of the application, since the displacement detection device comprises the shell, the circuit board and the electrical connecting piece, the part of the electrical connecting piece located in the shell is inserted with the circuit board, compared with the welding mode, the insertion mode reduces the risk of damage to the circuit board caused by high temperature, welding residues and the like in the welding process, and can improve the reliability of the circuit board, and further improve the reliability of the displacement detection device.

[0032] Additional aspects and advantages of the present application will be made apparent from the following description of embodiments of the present application, which will be given with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent from the following description of embodiments of the present application, which will be given with reference to the accompanying drawings.

[0034] Figure 1 is a structure exploded schematic view of a displacement detection device shown in embodiments of the present application;

[0035] Figure 2 is a cross-sectional structure schematic view of a displacement detection device shown in embodiments of the present application;

[0036] Figure 3 is Figure 2 is an enlarged structure schematic view of A in FIG.

[0037] Figure 4 is Figure 2 is an enlarged structure schematic view of B in FIG.

[0038] Figure 5 This is one of the structural schematic diagrams of the housing of a displacement detection device shown in the embodiments of this application;

[0039] Figure 6 This is a second schematic diagram of the structure of the housing of a displacement detection device shown in the embodiments of this application;

[0040] Figure 7 This is a schematic diagram of the connecting section and connector of a displacement detection device according to an embodiment of this application.

[0041] Reference numerals: 1 - Housing; 10 - Receiving cavity; 101 - First receiving cavity; 102 - Second receiving cavity; 12 - Positioning post; 13 - Side wall; 130 - Protrusion; 14 - Bottom wall; 140 - Support post; 141 - Reinforcing rib; 142 - Connecting ring; 143 - U-shaped groove; 144 - Injection groove; 2 - Circuit board; 20 - Chip; 3 - Electrical connector; 30 - Connecting terminal; 31 - Connecting harness; 301 - Wire; 32 - Connecting pipe; 33 - Connector; 34 - Connecting joint; 340 - Connecting port; 341 - First snap; 342 - First slot; 35 - Plug; 351 - Electrical connection terminal; 352 - Second snap; 4 - Protective cover; 40 - Slide rail; 41 - Boss; 42 - Angled snap; 43 - Receiving cavity; 5 - Sliding block; 6 - Metal sheet; 7 - Sealing ring. Detailed Implementation

[0042] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0043] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0044] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0045] In the description of the utility model, it needs to be understood that the terms "mounting", "connection" should be understood in a broad sense unless otherwise explicitly specified and limited, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] The embodiment of the application provides a displacement detection device, specifically, the displacement detection device can be a linear displacement detection device, and is applied to a vehicle. The displacement detection device of the application will be described in detail below with reference to the drawings.

[0047] Reference Figures 1-7 The displacement detection device provided by the embodiment of the application can specifically include: a shell 1, a circuit board 2 arranged in the shell 1, and an electrical connecting piece 3 at least partially located in the shell 1, and the part of the electrical connecting piece 3 located in the shell 1 is inserted into the circuit board 2.

[0048] Specifically, the circuit board 2 is arranged in the shell 1, and the circuit board 2 can be protected by the shell 1.

[0049] The chip 20, the excitation coil and the induction coil are arranged on the circuit board 2, the chip 20 can drive the excitation coil to generate an alternating magnetic field after being electrified, and the alternating magnetic field can generate an eddy current in the metal sheet 6 connected with the measured member. The eddy current generates an alternating magnetic field in the opposite direction of the excitation coil, so that the voltage amplitude sensed by the induction coil changes, and the position of the metal sheet 6 can be detected according to the size of the induced voltage. Further, the displacement amount of the measured member can be detected.

[0050] Part of the electrical connecting piece 3 is located outside the shell 1 and connected with an external device, and the other part is located in the shell 1 and inserted into the circuit board 2, and the electrical connecting piece 3 is used for providing working voltage for the circuit board 2 and outputting an analog signal.

[0051] In the related art, the connection between the electrical connecting piece 3 and the circuit board 2 is usually welding, and the high temperature generated in the welding process will cause thermal stress to the circuit board 2, which will cause the material of the circuit board 2 to age, deform or crack, damage the circuit board 2, and the flux used in the welding process may be left on the circuit board 2, which will cause corrosion over a long period of time, reduce the insulation performance of the circuit board 2, and affect the long-term reliability of the circuit board 2. The solder joint will loosen or even break after receiving mechanical stress. In the embodiment of the application, the part of the electrical connecting piece 3 located in the shell 1 is inserted with the circuit board 2. Compared with the welding method, the insertion method does not need high-temperature welding, reduces the risk of thermal damage to the circuit board 2, avoids the residue of the flux, improves the long-term reliability of the circuit board 2, provides more stable connection through insertion, avoids the disconnection of the circuit board 2 and the electrical connecting piece 3 under the action of mechanical stress, and improves the reliability of the displacement detection device.

[0052] Optionally, the electrical connecting piece 3 comprises a connecting terminal 30, and the connecting terminal 30 is embedded in the shell 1, and the circuit board 2 is inserted in the connecting terminal 30.

[0053] Specifically, as shown in Figure 2 and Figure 3 The connecting terminal 30 can be a fisheye terminal, the connecting terminal 30 is embedded in the bottom wall 14 of the shell 1, the circuit board 2 is provided with an insertion port at a position corresponding to the connecting terminal 30, the connecting terminal 30 penetrates the insertion port to realize the insertion of the circuit board 2 and the connecting terminal 30. The circuit board 2 can be provided with a chip 20, an excitation coil and an induction coil, the connecting terminal 30 is a plurality of, and the corresponding insertion port is also a plurality of, which can provide working voltage and output analog signal for the chip 20 and the like on the circuit board 2 through the connecting terminal 30. The number of connecting terminals 30 can be specifically set according to actual conditions, and the embodiment of the application does not make specific limitation.

[0054] In the embodiment, by embedding the connecting terminal 30 in the shell 1, a higher fixing effect can be provided to avoid the loosening or falling off of the electrical connecting piece 3 in the shell 1. Then, the circuit board 2 is inserted with the connecting terminal 30, so that the connecting terminal 30 can be more stably connected with the circuit board 2, can better resist mechanical stress, avoid connection failure caused by vibration or impact, ensure good contact between the circuit board 2 and the electrical connecting piece 3, and reduce the risk of intermittent disconnection.

[0055] Optionally, the connecting terminal 30 and the shell 1 are integrally injection molded.

[0056] Specifically, the shell 1 is an injection molding part, and the connecting terminal 30 is a metal part. During the injection molding process, the connecting terminal 30 can be fixed in the injection molding mold through the fixing structure, and then the injection liquid is injected into the injection molding mold, so that the connecting terminal 30 is integrally injection molded with the shell 1, and the connecting terminal 30 is embedded in the inside of the shell 1 through injection molding. In actual application, by integrally injection molding the connecting terminal 30 and the shell 1, the shell 1 and the connecting terminal 30 can form an integral structure, further improving the fixing strength of the connecting terminal 30 in the shell 1, reducing the risk of loosening or falling off, and further improving the reliability of the plug-in connection of the connecting terminal 30 and the circuit board 2. Moreover, the integrally injection molding can directly manufacture the connecting terminal 30 together with the shell 1, reducing the assembly steps, simplifying the assembly process, reducing the labor cost, and improving the production efficiency.

[0057] Optionally, the shell 1 is further provided with a positioning column 12, the positioning column 12 and the connecting terminal 30 are respectively arranged on two sides of the shell 1, one end of the circuit board 2 passes through the positioning column 12, and the other end passes through the connecting terminal 30, so as to position the position of the circuit board 2 in the shell 1.

[0058] As shown in Figure 2 , Figure 3 and Figure 5 , the positioning column 12 can be in any shape such as a cylindrical shape, and the positioning column 12 can be fixedly arranged in the inside of the shell 1 by welding, injection molding or the like. One side of the circuit board 2 is provided with a through hole at a position corresponding to the positioning column 12, and the other side is provided with a plug-in port at a position corresponding to the connecting terminal 30, and the through hole and the plug-in port are respectively arranged. When the circuit board 2 is arranged in the shell 1, the positioning column 12 passes through the through hole, and the connecting terminal 30 passes through the plug-in port, so as to fix the position of the circuit board 2 in the shell 1 through the positioning column 12 and the connecting terminal 30. In actual application, by cooperating the connecting terminal 30 and the positioning column 12, the position of the circuit board 2 can be accurately fixed, and the alignment accuracy of the circuit board 2 and other components can be ensured.

[0059] As an optional embodiment, the positioning column 12 can be integrally injection molded with the shell 1 and the connecting terminal 30, so that the positioning column 12, the connecting terminal 30 and the shell 1 form an integral structure, reducing the assembly steps, simplifying the assembly process, reducing the labor cost, and improving the production efficiency.

[0060] Optionally, the shell 1 is provided with a containing cavity 10, the electric connecting piece 3 further includes a connecting wire harness 31, the circuit board 2 and the connecting terminal 30 are arranged in the containing cavity 10, and the connecting wire harness 31 at least partially passes through the shell 1 and extends into the containing cavity 10 to be welded with the connecting terminal 30.

[0061] Specifically, the shell 1 has a receiving cavity 10, and the circuit board 2 and the connecting terminal 30 are arranged in the receiving cavity 10, so that the circuit board 2 and the connecting terminal 30 can be protected by the shell 1.

[0062] The connecting wire harness 31 is partially inserted into the receiving cavity 10 through the shell 1 and welded with the connecting terminal 30, and the other part is connected with an external device, so that the connecting wire harness 31 and the connecting terminal 30 can be used to provide working voltage and output analog signals for the circuit board 2. Specifically, the connecting wire harness 31 can include a plurality of wires 301, and the connecting terminal 30 can be a plurality of terminals. The number of wires 301 matches the number of connecting terminals 30. For example, the wires 301 can be three, two of which are power positive and negative wires 301, and the connecting terminal 30 is also three, one end of two connecting terminals 30 is connected with the positive and negative poles of the circuit board 2 respectively, and the other end is welded with the two wires 301 to provide working voltage for the circuit board 2. The other wire 301 is a signal line, and the other connecting terminal 30 is a signal connecting terminal 30, one end of which is connected with the signal output end of the circuit board 2, and the other end is connected with the wire 301 to output the analog signal of the circuit board 2. In actual application, by inserting the connecting wire harness 31 into the receiving cavity 10 and welding with the connecting terminal 30, a more stable electrical connection can be provided, and the connection failure caused by vibration or impact can be reduced. Moreover, the welding point is located in the receiving cavity 10, so that the welding quality can be ensured, and poor contact caused by external environment can be avoided.

[0063] Optionally, a filling adhesive layer is further included, which is filled in the receiving cavity 10 and covers at least the connection position of the connecting wire harness 31 and the connecting terminal 30.

[0064] Specifically, after the connecting wire harness 31 is welded with the connecting terminal 30 in the receiving cavity 10, sealing glue can be injected into the receiving cavity 10 to cover at least the connection position of the connecting wire harness 31 and the connecting terminal 30, and the sealing glue forms a filling adhesive layer after solidification. In the embodiment of the application, the connection position of the connecting wire harness 31 and the connecting terminal 30 is covered by the filling adhesive layer after the connecting wire harness 31 is welded with the connecting terminal 30 in the receiving cavity 10. In this way, the filling adhesive layer can fix the connection position of the connecting wire harness 31 and the connecting terminal 30, and the reliability of the connection between the connecting wire harness 31 and the connecting terminal 30 can be improved, thereby improving the reliability of the displacement detection device.

[0065] Optionally, the accommodating cavity 10 comprises a first accommodating cavity 101 and a second accommodating cavity 102 which are isolated from each other; the circuit board 2 is arranged in the first accommodating cavity 101, and the connecting terminal 30 is partially arranged in the first accommodating cavity 101 and electrically connected with the circuit board 2, and the other part of the connecting terminal 30 extends into the second accommodating cavity 102, and the connecting wire harness 31 extends into the second accommodating cavity 102 and is welded with the connecting terminal 30; the filling glue layer is filled in the second accommodating cavity 102.

[0066] As shown in Figure 2 and Figure 3 specifically, the first accommodating cavity 101 and the second accommodating cavity 102 are isolated from each other, the first accommodating cavity 101 is used for accommodating the circuit board 2, and the second accommodating cavity 102 is a welding cavity; the connecting terminal 30 is partially arranged in the first accommodating cavity 101 and is inserted with the circuit board 2, and the other part of the connecting terminal 30 extends into the second accommodating cavity 102, so that the connecting wire harness 31 and the connecting terminal 30 can be welded in the second accommodating cavity 102; after the welding operation is completed, the sealing glue is injected into the second accommodating cavity 102, so that the sealing glue fills the entire second accommodating cavity 102, and the sealing glue forms the filling glue layer after solidification.

[0067] In actual application, by separately arranging the second accommodating cavity 102 as a welding cavity, the filling glue layer can fill the entire welding cavity and completely cover the outside of the connecting part of the connecting wire harness 31 and the connecting terminal 30, so that the connecting part of the connecting wire harness 31 and the connecting terminal 30 can be more firmly fixed together, the reliability of the connection between the connecting wire harness 31 and the connecting terminal 30 is further improved, and a moisture-proof and corrosion-proof environment can be provided for the connecting part to improve the stability of the connecting part. In addition, the separately arranged second accommodating cavity 102, the filling glue layer only needs to fill the second accommodating cavity 102, rather than the entire accommodating cavity, so that the use amount of the sealing glue can be reduced, thereby reducing the cost.

[0068] Optionally, the electric connecting piece 3 further comprises a connecting pipe 32 and a connecting head 33; one end of the connecting head 33 is connected to the connecting part of the connecting wire harness 31 and the shell 1, and the other end of the connecting head 33 is connected to the connecting pipe 32, and the part of the connecting wire harness 31 located outside the shell 1 is arranged in the connecting pipe 32.

[0069] As shown in Figure 1 and Figure 6As shown, the connecting head 33 can be a corrugated buckle, the shell 1 is provided with an extension, the wires 301 of the connecting wire harness 31 extend into the shell 1 from the extension, the corrugated buckle is buckled outside the extension, and the corrugated buckle can be covered on the outside of the connecting wire harness 31. The corresponding connecting pipe 32 is a corrugated pipe, and the corrugated pipe and the corrugated buckle can be connected by a threaded, buckling or other fixing mode. The part of the connecting wire harness 31 outside the shell 1 passes through the corrugated buckle and the corrugated pipe and is connected with the external device. In actual application, by setting the connecting pipe 32 and the connecting head 33, the part of the connecting wire harness 31 outside the shell 1 can be protected by the connecting pipe 32 and the connecting head 33, and the service life of the connecting wire harness 31 is prolonged.

[0070] Optionally, the electrical connector 3 further comprises a connecting joint 34 and a plug-in head 35. The connecting joint 34 comprises two connecting ports 340 arranged at an angle. One connecting port 340 is connected with the connecting pipe 32, and the other connecting port 340 is connected with the plug-in head 35. The connecting wire harness 31 passes through the connecting joint 34 and is electrically connected with the plug-in head 35. The plug-in head 35 is used to be electrically connected with an external device.

[0071] Specifically, as shown in Figure 1 and Figure 6 The connecting joint 34 comprises two connecting pipes arranged at an angle. The angle can be any angle. Exemplarily, the angle can be 90 degrees. The openings of the two connecting pipes are the connecting ports 340. One connecting port 340 is fixedly connected with the connecting pipe 32, and the other connecting port 340 is fixedly connected with the plug-in head 35. In actual application, the structure of the connecting joint 34 can make the connecting wire harness 31 form an angle change at the connecting point. The angle change can effectively utilize the limited space and avoid the connecting wire harness 31 from being excessively bent or twisted in a narrow space. Thus, the space layout is optimized, specific installation requirements are met, and the flexibility of the connecting wire harness 31 when connected with an external device is improved.

[0072] The plug-in head 35 is internally provided with an electrical connection terminal 351. The electrical connection terminal 351 can be a plurality of electrical connection terminals 351, which are correspondingly connected with a plurality of wires 301 in the connecting wire harness 31. The plug-in head 35 can be plugged with an external device to provide voltage for the circuit board 2 and transmit analog signals. At the same time, the electrical connector 3 can be modified according to the connection requirements of the external device, support multiple power supplies, and multiple signal redundant communication to improve the safety and reliability of the displacement detection device. In actual application, the compact and efficient electrical connection can be realized by setting the connecting joint 34 and the plug-in head 35, which ensures the simplicity of operation and the stability of connection.

[0073] Optionally, the top of the connecting port 340 is provided with a first buckle 341, which is used to buckle the electrical connector 33 and the external device after the connecting piece 34 is connected with the plug 35, and the electrical connector 33 is connected with the external device, so as to ensure the stability and reliability of the connection.

[0074] In other optional embodiments, the connecting mode of the connecting piece 34 and the plug 35 can be buckle connection. Specifically, the connecting port 340 of the connecting piece 34 is connected with the plug 35, and the two sides of the connecting port 340 are provided with first buckling grooves 342. The two sides of the plug 35 are correspondingly provided with second buckles 352. The first buckling grooves 342 and the second buckles 352 are buckled, so as to fix and connect the connecting piece 34 and the plug 35 together, and ensure the reliability of the electrical connection.

[0075] Optionally, the shell 1 has two opposite side walls 13 and a bottom wall 14 connected to the side walls 13. The two sides of the circuit board 2 are fixedly connected to the two side walls 13 respectively, so as to fix the circuit board 2 in the shell 1.

[0076] Specifically, the two side walls 13 are oppositely arranged, and the two side walls and the bottom wall 14 form a containing cavity 10. The two sides of the circuit board 2 can be fixed on the side walls 13 by welding, buckling or other fixing methods, so as to fix the circuit board 2 in the shell 1. In actual application, by fixing the two sides of the circuit board 2 to the two side walls 13 respectively, more stable mechanical support can be provided, and the shaking and displacement of the circuit board 2 in the shell 1 can be reduced, and the stability of the overall structure can be improved. Moreover, the two sides of the circuit board 2 are fixed on the side walls 13, which can be fixed by buckling, screwing or other simple methods, so as to simplify the installation steps and improve the production efficiency.

[0077] Optionally, a plurality of protruding parts 130 are arranged on the side wall 13 at intervals. The protruding parts 130 on the two side walls 13 are oppositely arranged. The two sides of the circuit board 2 are buckled between adjacent protruding parts 130.

[0078] Specifically, a plurality of protruding parts 130 are arranged on the two side walls 13 at intervals. The protruding part 130 can protrude outward in a direction away from the side wall 13. When the circuit board 2 is installed, the two sides of the circuit board 2 can be buckled between the protruding parts 130 on the two side walls 13 by a press-fitting device, so as to fix the circuit board 2 in the containing cavity. In actual application, by arranging a plurality of protruding parts 130 on the side wall 13, a plurality of buckling points can be provided, so that the two sides of the circuit board 2 can be uniformly fixed between the protruding parts 130, so that the fixing of the circuit board 2 in the containing cavity is more stable, and the risk of loosening and displacement is further reduced. Moreover, no additional fixing parts are needed, and the cost is reduced.

[0079] Optionally, a plurality of support columns 140 are arranged on the bottom wall 14 in a spaced distribution, the circuit board 2 is in abutment with the plurality of support columns 140, and the support columns 140 are used to support the circuit board 2 in the shell 1.

[0080] Specifically, as shown in Figure 1 and Figure 5 a plurality of support columns 140 can be arranged on the bottom wall 14 in a spaced distribution, the plurality of support columns 140 can be arranged in an array, and the number of support columns 140 can be selected according to the size of the circuit board 2. For example, as shown in Figure 5 , the bottom wall 14 is arranged in an array with 10 support columns 140, and when the circuit board 2 needs to be fixedly arranged in the accommodating cavity, the top surface of the support column 140 can be in abutment with the bottom surface of the circuit board 2, thereby playing a role in supporting the circuit board 2 in the shell 1.

[0081] In actual application, by arranging a plurality of support columns 140 on the bottom wall 14, the plurality of support columns 140 provide a plurality of support points, so that the bottom surface of the circuit board 2 can be uniformly supported, and during the press-fitting process of the circuit board 2, the pressure on the circuit board 2 can be effectively dispersed, thereby preventing the circuit board 2 from being deformed or damaged during the press-fitting or use process, prolonging the service life of the circuit board 2, and ensuring the stability and structural integrity of the circuit board 2. In addition, through the support of the support column 140, a certain distance can be provided between the circuit board 2 and the bottom wall 14, so that the circuit board 2 and the bottom wall 14 have an air layer, which can reduce various external interferences such as electromagnetic interference, physical vibration, temperature influence, humidity and corrosion, and mechanical impact. The stability and reliability of the circuit board 2 are improved, and the service life thereof is prolonged.

[0082] In some optional embodiments, the support column 140 can be a hollow cylindrical shape. Compared with a solid cylindrical support column 140, the support column 140 has a lighter mass, can reduce the weight of the shell 1, reduce the use of materials, and reduce costs.

[0083] In some optional embodiments, the support column 140 can also be integrally injection molded with the shell 1, so that the support column 140 and the shell 1 form an integral structure, thereby reducing the assembly steps, reducing the manual operation steps, reducing the labor cost, and improving the production efficiency.

[0084] Optionally, a plurality of reinforcing ribs 141 are arranged in the shell 1, and the plurality of reinforcing ribs 141 are arranged between the support columns 140, the side wall 13, and the bottom wall 14.

[0085] Specifically, as shown in Figure 1 and Figure 5As shown, the reinforcing ribs 141 are arranged between two adjacent support columns 140, between the support column 140 and the side wall 13, between two side walls 13, and the like, and are connected with the bottom wall 14. The reinforcing ribs 141 can be integrally formed or separately manufactured and then connected with each other. The reinforcing ribs 141 can improve the strength and rigidity of the support column 140, the bottom wall 14 and the side wall 13. The reinforcing ribs 141 can be made of the same material as the shell 1 or a different material. In actual application, the reinforcing ribs 141 arranged in the shell 1 can form a relatively stable structure between the support column 140, the bottom wall 14 and the side wall 13, thereby improving the rigidity and strength of the shell 1, effectively preventing the deformation of the shell 1 under external force, and ensuring the stability and long-term reliability of the shell 1.

[0086] In some optional embodiments, the reinforcing ribs 141, the support column 140 and the shell 1 can be integrally injection molded to form an integral structure, which can reduce the assembly steps, reduce the manual operation steps, reduce the labor cost, improve the production efficiency, and form a more stable structure between the reinforcing ribs 141, the support column 140 and the shell 1, thereby further improving the rigidity and strength of the shell 1.

[0087] Optionally, the reinforcing ribs 141 on the side wall 13 at least partially extend in a direction away from the side wall 13 to form the protruding portions 130.

[0088] Specifically, as shown in Figure 5 The reinforcing ribs 141 on the side wall 13 protrude in a direction away from the side wall 13 to form the protruding portions 130. The protruding portions 130 have a small thickness. During the press fitting of the circuit board 2, the outer edge portions of the protruding portions 130 are cut by the circuit board 2. The remaining protruding portions 130 can fix the two sides of the circuit board 2 on the side wall 13, thereby achieving the fixing effect of the circuit board 2, improving the installation stability of the circuit board 2, and reducing the cost without additional fixing members.

[0089] Further, as shown in Figure 6 The bottom surface of the bottom wall 14 can be provided with U-shaped grooves 143. The U-shaped grooves 143 can reduce the local wall thickness of the bottom wall 14, thereby ensuring the strength and stability of the structure while ensuring the quality of the injection molding.

[0090] Further, the bottom wall 14 can be provided with a plurality of injection grooves 144. The injection grooves 144 can reduce the wall thickness of the shell 1, reduce the use of materials, reduce the cost, and ensure the quality of the injection molding, thereby improving the overall structural strength and durability of the shell 1.

[0091] Further, the bottom wall 14 is further provided with a plurality of connecting rings 142, which can be used for connecting the shell 1 with the vehicle. The connecting rings 142 are metal rings embedded in the bottom wall 14 and slightly higher than the bottom wall 14 to ensure the strength of the connecting part. The connecting rings 142 are at a certain distance from the circuit board 2 to avoid interference of the metal rings with the measurement accuracy.

[0092] Optionally, the protective cover 4 is further provided, which is covered on the shell 1 to close the shell 1.

[0093] Specifically, as shown in Figure 1 , the protective cover 4 and the shell 1 can be fixed on the shell 1 by laser welding, thereby closing the accommodating cavity and protecting the circuit board 2 inside the shell 1.

[0094] Optionally, the sliding block 5 is further provided, which is slidingly connected to the protective cover 4, and is used for connecting with the measured member.

[0095] Specifically, as shown in Figure 1 and Figure 4 , the sliding block 5 is provided with a sliding groove, and the protective cover 4 is provided with a straight sliding rail 40, the sliding groove is slidingly connected to the sliding rail 40, thereby the sliding block 5 is slidingly connected to the protective cover 4, and the sliding block 5 is embedded with a metal sheet 6, the sliding block 5 is connected with the measured member, the measured member drives the sliding block 5 to move linearly on the sliding rail 40 to generate a linear displacement amount, the chip 20 of the circuit board 2 can drive the excitation coil to generate an alternating magnetic field after being powered on, the alternating magnetic field can generate an eddy current in the metal sheet 6 in the sliding block 5. The eddy current generates an alternating magnetic field in the opposite direction of the excitation coil, so that the voltage amplitude sensed by the induction coil changes, and the position of the metal sheet 6 can be detected according to the size of the induced voltage. Further, the linear displacement amount of the measured member can be detected. In actual application, the sliding groove and the sliding rail 40 can provide accurate guidance for the displacement detection device, ensure that it slides along the predetermined path during the measurement process, reduce deviation and shaking, and improve the accuracy and accuracy of the measurement.

[0096] In some optional embodiments, two blocking pieces are arranged on the protective cover 4 on both sides of the slide rail 40, one of which is the inclined buckle 42, which is a snap type, and the sliding block 5 can be clamped into the slide rail 40 from the inclined buckle 42, and the other is the boss 41, which is upwardly protruding on the protective cover 4, so that the boss 41 forms a receiving cavity 43, which can accommodate the protruding connecting terminal 30, avoiding interference between the connecting terminal 30 and the protective cover 4. The stroke of the sliding block 5 can be limited by the two blocking pieces, which can avoid the sliding block 5 from being separated from the protective cover 4, so that the sliding block 5 is out of the effective sensing range of the displacement detection device, and the normal work of the displacement detection device is ensured.

[0097] The maximum moving stroke of the sliding block 5, the sensing range of the displacement detection device, and the effective measurement range of the displacement detection device are associated with the size of the shell 1, the protective cover 4, and the circuit board 2, and the effective measurement range can be changed by changing the shell 1, the protective cover 4, and the circuit board 2. The present application does not make specific limitations on this. For example, the maximum moving stroke of the sliding block 5 can be ±29mm, the sensing range of the displacement detection device can be ±26.5mm at most, and the effective measurement range of the displacement detection device can be ±25mm at most.

[0098] In some optional embodiments, the outer side of the side wall 13 is sleeved with a sealing ring 7, which can be used to ensure the sealing between the displacement detection device and the vehicle.

[0099] In summary, the displacement detection device described in the present application can have at least the following advantages:

[0100] In the present application, the part of the electrical connecting piece 3 located in the shell 1 is inserted with the circuit board 2, compared with the welding method, the insertion method does not need high-temperature welding, reduces the risk of thermal damage to the circuit board 2, avoids the residue of the flux, improves the long-term reliability of the circuit board 2, the insertion can provide more stable connection, avoids the disconnection of the circuit board 2 and the electrical connecting piece 3 under the action of mechanical stress, can improve the reliability of the connection between the electrical connecting piece 3 and the circuit board 2, and further improve the reliability of the displacement detection device.

[0101] The present application also provides a steering assembly, which can specifically include the displacement detection device described in any of the above embodiments.

[0102] The displacement detection device can be applied to a steering assembly of a vehicle, for example in a rear wheel steering system of the vehicle, the rear wheel steering system is generally controlled by a driver to drive a transmission rod to deflect the rear wheel, in this process, the linear displacement of the transmission rod needs to be measured, through which the steering angle of the rear wheel can be calculated, by connecting the transmission rod with the sliding block 5 of the displacement detection device, the transmission rod drives the sliding block 5 to move on the slide rail 40 to generate the linear displacement, the circuit board 2 can measure the position of the sliding block 5 to calculate the linear displacement, and then the calculation of the steering angle of the rear wheel is realized.

[0103] It should be noted that in the embodiments of the present application, the structure of the displacement detection device is the same as that of the displacement detection device in any of the above embodiments, and the beneficial effects are similar, which will not be repeated here.

[0104] The embodiments of the present application also provide a vehicle, which can specifically include the displacement detection device of any of the above embodiments or the steering assembly of the above embodiments.

[0105] It should be noted that in the embodiments of the present application, the structure of the displacement detection device is the same as that of the displacement detection device in any of the above embodiments, and the beneficial effects are similar, which will not be repeated here.

[0106] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0107] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, the scope of the present application is defined by the claims and their equivalents.

Claims

1. A displacement detection device, characterized in that, The displacement detection device includes: case; A circuit board, wherein the circuit board is disposed within the housing; And an electrical connector, at least partially located within the housing, the portion of the electrical connector located within the housing being inserted into the circuit board.

2. The displacement detection device according to claim 1, characterized in that, The electrical connector includes a connection terminal, which is embedded in the housing, and the circuit board is plugged into the connection terminal.

3. The displacement detection device according to claim 2, characterized in that, The connecting terminal is integrally injection molded with the housing.

4. The displacement detection device according to claim 2, characterized in that, The housing is also provided with a positioning post, which and the connecting terminal are respectively disposed on both sides of the housing. One end of the circuit board passes through the positioning post and the other end passes through the connecting terminal to position the circuit board within the housing.

5. The displacement detection device according to claim 2, characterized in that, The housing has a receiving cavity, and the electrical connector further includes a connecting wire harness. The circuit board and the connecting terminal are disposed in the receiving cavity, and the connecting wire harness at least partially passes through the housing and extends into the receiving cavity to be soldered to the connecting terminal.

6. The displacement detection device according to claim 5, characterized in that, It also includes a filler adhesive layer, The filler adhesive layer fills the receiving cavity and at least covers the connection area between the connecting wire harness and the connecting terminal.

7. The displacement detection device according to claim 6, characterized in that, The receiving cavity includes a first receiving cavity and a second receiving cavity that are isolated from each other; The circuit board is disposed in the first receiving cavity. A portion of the connecting terminal is located in the first receiving cavity and electrically connected to the circuit board, while the other portion extends into the second receiving cavity. The connecting wire harness extends into the second receiving cavity and is soldered to the connecting terminal. The filling adhesive layer fills the second receiving cavity.

8. The displacement detection device according to claim 5, characterized in that, The electrical connector also includes a connecting pipe and a connector head; One end of the connector is connected to the connection point between the housing and the connecting wire harness, and the other end is connected to the connecting tube. The portion of the connecting wire harness located outside the housing is disposed inside the connecting tube.

9. The displacement detection device according to claim 8, characterized in that, The electrical connector also includes a connecting section and a plug. The connecting section includes two connection ports arranged at an angle. One connection port is connected to the connecting pipe, and the other connection port is connected to the plug. The connecting wire harness passes through the connecting section and is electrically connected to the plug. The plug is used for electrical connection with an external device.

10. The displacement detection device according to claim 1, characterized in that, The housing has two oppositely arranged side walls and a bottom wall connected to the side walls. The circuit board is fixedly connected to the two side walls on both sides to fix the circuit board inside the housing.

11. The displacement detection device according to claim 10, characterized in that, Multiple protrusions are spaced apart on the sidewall, with the protrusions on two sidewalls facing each other, and the two sides of the circuit board are snapped between the multiple adjacent protrusions.

12. The displacement detection device according to claim 11, characterized in that, The bottom wall is provided with a plurality of support columns spaced apart, and the circuit board abuts against the plurality of support columns, the support columns being used to support the circuit board within the housing.

13. The displacement detection device according to claim 12, characterized in that, The housing is provided with a plurality of reinforcing ribs, which are disposed between the support column, the side wall and the bottom wall.

14. The displacement detection device according to claim 13, characterized in that, The reinforcing ribs on the sidewall extend at least partially in a direction away from the sidewall to form the protrusion.

15. The displacement detection device according to claim 2, characterized in that, It also includes a protective cover, which is placed over the housing to seal the housing.

16. The displacement detection device according to claim 15, characterized in that, The protective cover has a protrusion corresponding to the position of the connecting terminal, and the protrusion has a receiving cavity inside, in which the connecting terminal is at least partially located.

17. The displacement detection device according to claim 15, characterized in that, It also includes a sliding block, which is slidably connected to the protective cover and is used to connect with the test piece.

18. A steering assembly, characterized in that, The steering assembly includes the displacement detection device according to any one of claims 1-17.

19. A vehicle, characterized in that, The vehicle includes: the steering assembly of claim 18 or the displacement detection device of any one of claims 1-17.

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