Wheel speed sensor

Abstract

The utility model discloses a wheel speed sensor comprising a first connecting part, one end of the first connecting part is used for connecting external equipment, and the first connecting part comprises a first conductive part; the second connecting part comprises a first part and a second part which are connected with each other, the first conductive part penetrates through the first part so that the first part can be connected with the first connecting part in an inserted mode, the second part is provided with an accommodating part, a chip is arranged in the accommodating part, and the first conductive part is electrically connected with the chip after being inserted into the first part. According to the utility model, the universality can be improved, the state of the chip can be directly disassembled and analyzed, and the thickness test is also simple and accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile, especially relates to a wheel speed sensor. BACKGROUND

[0002] The wheel speed sensor is used to measure the rotation speed of the automobile wheel.

[0003] The current wheel speed sensor is mostly integrally injection molded, the internal chip and the pin of the sensor are integrally molded by the injection plastic, for different vehicle models, a new wheel speed sensor needs to be injection molded, the universality is poor, and the chip is injection molded in the injection plastic, the chip state can be tested only under the X-ray equipment, the key dimension thickness test of the chip (a kind of test to the thickness of chip) is also more difficult and inaccurate, and it is difficult to take out the chip alone. SUMMARY

[0004] The utility model discloses a wheel speed sensor, which can improve the universality, directly disassemble and analyze the state of the chip, and the thickness test is simple and accurate.

[0005] To solve the above technical problems, the embodiment of the utility model discloses a wheel speed sensor, which comprises:

[0006] The first connecting part is used for connecting external equipment, and the first connecting part comprises a first conductive part;

[0007] The second connecting part comprises a first part and a second part connected with each other, the first conductive part penetrates the first part to make the first part and the first connecting part plug-in, the second part is provided with a containing part, the containing part is provided with a chip, and the first conductive part is electrically connected with the chip after being inserted into the first part.

[0008] The first conductive part penetrates the first part to make the first part and the first connecting part plug-in, the connection between the first connecting part and the second connecting part is realized, one end of the first connecting part is used for connecting external equipment, when the vehicle model is changed, only the second connecting part and the first connecting part need to be disassembled, and a new second connecting part can be replaced, without the need of injection molding a new wheel speed sensor, so that the universality is greatly improved.

[0009] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, the wheel speed sensor further comprises a connecting piece, and the connecting piece is used for connecting the first conductive part and the chip.

[0010] By adopting the above technical scheme, when the length of the first conductive part is insufficient and the first conductive part cannot contact the chip after being inserted into the first part, the contact between the first conductive part and the chip can be realized through the connecting piece, so that the electrical connection between the first conductive part and the chip is realized, that is, when the vehicle type is changed and the length of the second connecting part required is longer, the new first connecting part does not need to be replaced, and the connecting piece only needs to be added, so that the connection between the chip and the first conductive part can be realized, and a new wheel speed sensor does not need to be re-injected, and the universality is greatly improved.

[0011] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, a plurality of partitioning pieces are arranged in the accommodating portion, the plurality of partitioning pieces are arranged at intervals along a first direction, and the partitioning piece is located between the two first conductive parts.

[0012] By adopting the above technical scheme, the plurality of partitioning pieces are arranged at intervals along the first direction, and the partitioning piece is located between the two first conductive parts, so that the positioning of the first conductive part and the prevention of the short circuit of the wheel speed sensor caused by the contact between the two first conductive parts are realized.

[0013] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, a plurality of limiting pieces are further arranged in the accommodating portion, and at least part of the limiting pieces are in interference fit with the chip.

[0014] By adopting the above technical scheme, the plurality of limiting pieces are arranged, and part of the limiting pieces are in interference fit with the chip to fix the position of the chip, so that the displacement of the chip is prevented, and the short circuit of the chip and the fault of the displacement sensing signal of the chip are prevented.

[0015] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, one side of the first connecting part facing the first part is provided with a plug-in part, the first part is provided with a plug-in port matched with the plug-in part, and the plug-in part is inserted into the plug-in port to insert the first conductive part into the accommodating portion.

[0016] By adopting the above technical scheme, the plug-in part is inserted into the plug-in port to insert the first conductive part into the accommodating portion, so that the connection between the first connecting part and the second connecting part is realized.

[0017] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, one side of the accommodating portion is open, one side is closed, the closed end is provided with a boss, the boss extends along the second direction, and the second direction intersects the first direction.

[0018] The technical scheme adopts the above technical scheme, and when the second connecting portion is inserted into the mounting hole of the vehicle body, the positioning of the second connecting portion can be realized.

[0019] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, the opening end is provided with a protective film, and the protective film contacts the connecting piece, the first conductive portion and the chip and covers the connecting piece, the first conductive portion and the chip.

[0020] The technical scheme adopts the above technical scheme, and by arranging the protective film at the opening end, the contact of water vapor, air, the chip, the connecting piece and the first conductive portion can be prevented, so that short circuit or other faults are avoided.

[0021] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, the accommodating portion comprises a first bottom wall and a second bottom wall, the first bottom wall and the second bottom wall are arranged at intervals along the second direction, the chip contacts the first bottom wall, and the boss is connected with the second bottom wall.

[0022] The technical scheme adopts the above technical scheme, and the first bottom wall and the second bottom wall are arranged at intervals along the second direction, so as to prevent water vapor from entering the second bottom wall and causing damage to the chip in contact with the second bottom wall.

[0023] According to another specific embodiment of the present application, the embodiment of the present application discloses a wheel speed sensor, the first portion further comprises an extension portion, the extension portion extends along the first direction, the extension portion is provided with a mounting hole, the mounting hole penetrates through the extension portion along a third direction, a bushing is arranged in the mounting hole, and the third direction intersects the first direction and the second direction.

[0024] The technical scheme adopts the above technical scheme, and the bushing is arranged in the mounting hole, so as to enhance the pressure bearing capacity of the extension portion, prevent damage caused by excessive force during installation when the extension portion is installed on the vehicle body, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A perspective view of a front surface of a wheel speed sensor provided by an embodiment of the present application is shown.

[0026] Figure 2 A top view of the first connecting part is shown;

[0027] Figure 3 A perspective view of the second connecting part under a top view perspective is shown;

[0028] Figure 4 A perspective view of the first connecting part under a front view perspective is shown;

[0029] Figure 5 A perspective view of the reverse side of the wheel speed sensor is shown;

[0030] Figure 6 A side view of the wheel speed sensor is shown;

[0031] Figure 7 A perspective view of the second connecting part is shown.

[0032] Wherein, the reference signs: 100, the first connecting part; 101, the first conductive part; 102, the through hole; 103, the plug-in part; 104, the limiting part; 105, the third part; 106, the fourth part; 200, the second connecting part; 201, the first part; 202, the second part; 203, the accommodating part; 204, the chip; 205, the plug-in interface; 206, the extension part; 207, the mounting hole; 208, the partition piece; 209, the limiting piece; 210, the boss; 300, the connecting piece; 301, the first bottom wall; 302, the second bottom wall; 303, the bushing. DETAILED DESCRIPTION

[0033] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. Although the description of the present application will be introduced in combination with the preferred embodiments, this does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0034] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0035] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0036] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0038] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be further described in detail below with reference to the drawings.

[0039] The embodiment of the present application discloses a wheel speed sensor, referring to Figure 1 , comprising: a first connecting part 100 and a second connecting part 200, one end of the first connecting part 100 is used for connecting an external device (such as a vehicle body connector), the first connecting part 100 comprises a first conductive part 101; the second connecting part 200 comprises a first part 201 and a second part 202 connected to each other, the first conductive part 101 penetrates the first part 201 to make the first part 201 and the first connecting part 100 plug-in, the second part 202 is provided with a receiving part 203, the receiving part 203 is provided with a chip 204, and the first conductive part 101 is electrically connected with the chip 204 after being inserted into the first part 201.

[0040] Exemplarily, the first conductive part 101 penetrates the first part 201 to make the first part 201 and the first connecting part 100 plug-in, realize the connection of the first connecting part 100 and the second connecting part 200, one end of the first connecting part 100 is used for connecting external equipment, when the vehicle type is changed, only the second connecting part 200 needs to be disassembled with the first connecting part 100, and a new second connecting part 200 is replaced, without the need of re-injection of a new wheel speed sensor, the universality is greatly improved. At the same time, the chip 204 is placed in the accommodating part 203 instead of being injection molded in the injection material, without the need of X-ray equipment, the state of the chip 204 can be observed, the state of the chip 204 is convenient to analyze, and the thickness test is also simpler.

[0041] Exemplarily, referring to Figure 1 and Figure 2 , the first connecting part 100 is provided with four through holes 102, the first conductive part 101 penetrates the through hole 102 and is connected with the first connecting part 100, and is injection molded with the first connecting part 100 to ensure the position of the first conductive part 101, the first conductive part 101 includes four, the first conductive part 101 is of conductive material, and the four first conductive parts 101 extend along the third direction (i.e. the Z direction shown in Figure 1 .

[0042] Exemplarily, referring to Figure 1 and Figure 3 , one side of the first part 201 facing the first connecting part 100 is provided with a plug-in port 205, the plug-in port 205 penetrates the first part 201 along the third direction (i.e. the Z direction shown in Figure 1 . Figure 4 , one side of the first connecting part 100 facing the first part 201 is provided with a plug-in part 103, the plug-in part 103 is inserted into the plug-in port 205, so that the first conductive part 101 is inserted into the accommodating part 203, after the plug-in part 103 is inserted, the adhesive is filled again, and the stability of the first connecting part 100 and the second connecting part 200 is ensured again.

[0043] It should be noted that the number of the first conductive part 101 and the through hole 102 is not limited in the embodiment of the application, and can be selected according to the vehicle type, and can also be two, three or the like.

[0044] Exemplarily, referring to Figure 1 , the wheel speed sensor further includes four connecting parts 300, the connecting part 300 extends along the third direction (i.e. the Z direction shown in Figure 1 , the connecting part 300 is of conductive material, and the connecting part 300 is used for connecting the first conductive part 101 and the chip 204. Similarly, the number of the connecting part 300 is not limited in the embodiment of the application, and can be consistent with the number of the first conductive part 101.

[0045] By adopting the above technical solution, when the length of the first conductive part 101 is insufficient and it cannot contact the chip 204 after the first part 201 is inserted, the connector 300 can be used to make contact between the two and achieve electrical connection. In other words, when the vehicle model is changed and the required length of the second connecting part 200 is longer, there is no need to replace the first connecting part 100. Only the connector 300 needs to be added to achieve the connection between the chip 204 and the first conductive part 101. There is no need to re-inject and mold a new wheel speed sensor, which greatly improves the versatility.

[0046] For example, refer to Figure 2 to Figure 4 The first connecting portion 100 includes a third portion 105 and a fourth portion 106, both of which are along a third direction (i.e., Figure 4 Extending in the Z direction (as shown), the third part 105 is hollow inside and serves as the connector for the wheel speed sensor. One end of the first conductive part 101 passes through the fourth part 106 and is located inside the third part 105. When the first connecting part 100 is connected to an external device (e.g., a vehicle body connector), one end of the first conductive part 101 is inserted into the vehicle body connector to achieve an electrical connection. Along the second direction (i.e.,...) Figure 4 (As shown in the Y direction), the third part 105 has a limiting part 104 protruding on both sides. When the first connecting part 100 is connected to the vehicle body connector, the limiting part 104 engages with the vehicle body connector to limit the connection.

[0047] For example, refer to Figure 5 The first part 201 also includes an extension 206, which extends along a first direction (i.e. Figure 5 The extension 206 extends in the X direction (as shown), and the extension 206 is provided with a mounting hole 207, which is along the third direction (i.e., Figure 5 The extension 206 is penetrated in the Z direction (as shown). A bushing 303 is provided in the mounting hole 207 to enhance the pressure resistance of the extension 206 and prevent damage caused by excessive force during installation when it is installed on the vehicle body.

[0048] For example, refer to Figure 6 and Figure 7 The receiving part 203 is provided with three partitions 208, and the three partitions 208 are arranged along the first direction (i.e. Figure 7 As shown in the X direction, the spacers are spaced apart, with the spacer 208 located between the two first conductive parts 101 to position the first conductive parts 101 and prevent the two first conductive parts 101 from contacting each other and causing a short circuit in the wheel speed sensor.

[0049] Exemplarily, three limiters 209 are arranged in the accommodating portion 203, two of which are in interference fit with the two chips 204, and the third one is between the two chips 204 to fix the position of the chips 204 and prevent displacement of the chips 204, which may cause short circuit of the chips 204 and displacement-induced signal failure.

[0050] Exemplarily, referring to Figure 6 and Figure 7 , the accommodating portion 203 is open on one side and closed on the other side along the second direction (i.e., the Y direction shown in FIG. 7), and the closed end is provided with a boss 210 extending along the second direction (i.e., the Y direction shown in FIG. 7). When the second connecting portion 200 is inserted into the mounting hole of the vehicle body, the top end (i.e., point A shown in FIG. 7) of the boss 210 along the second direction (i.e., the Y direction shown in FIG. 7) and the two side edges (i.e., points B and C shown in FIG. 7) of the accommodating portion 203 along the first direction (i.e., the X direction shown in FIG. 7) form a three-point positioning, which can jointly realize positioning of the second connecting portion 200. Figure 6 Figure 6 Figure 6 Figure 5 Figure 7 Figure 5

[0051] Exemplarily, the chips 204 and the connecting member 300 are filled with glue to further prevent short circuit between the chips 204 and the connecting member 300. The open end is provided with a protective film, for example, transparent glue, which is in contact with and covers the connecting member 300, the first conductive portion 101 and the chips 204, and can prevent water vapor and air from contacting the chips 204, the connecting member 300 and the first conductive portion 101, thereby causing short circuit or other failures. Compared with the existing technology of injecting the chips 204 into injection plastic, this design can also facilitate observation and disassembly of the chips 204. When disassembly is needed, only the transparent glue needs to be torn off, and then the chips 204 can be disassembled, instead of damaging the entire wheel speed sensor as in the prior art.

[0052] Exemplarily, referring to Figure 1 and Figure 5 , the accommodating portion 203 includes a first bottom wall 301 and a second bottom wall 302, and the first bottom wall 301 and the second bottom wall 302 extend along the second direction (i.e., the Y direction shown in FIG. 7). Figure 1 ​​​​​​The first bottom wall 301 and the second bottom wall 302 are arranged at a fixed interval in the Y direction shown in the figure), the chip 204 is in contact with the first bottom wall 301, and the boss 210 is connected with the second bottom wall 302, so as to prevent water vapor from entering the second bottom wall 302 and causing damage to the chip 204 in contact with the second bottom wall 302. At the same time, when the thickness test is performed, since the interval between the first bottom wall 301 and the second bottom wall 302 is fixed, the thickness of the chip 204 can be obtained by measuring the distance from the vehicle body mounting hole to the chip 204 and then subtracting the interval between the first bottom wall 301 and the second bottom wall 302, and the measurement method is simple and accurate.

[0053] The first direction (i.e. Figure 1 The X direction shown in the figure), the second direction (i.e. Figure 1 The Y direction shown in the figure) and the third direction (i.e. Figure 1 The Z direction shown in the figure) intersect, and for the convenience of description, the first direction, the second direction and the third direction are perpendicular to each other in the embodiment of the application.

[0054] In summary, the first connecting part 100 serves as a connector of the wheel speed sensor, realizes connection with the vehicle body connector, and can be universal and matched according to different second connecting parts 200; the second connecting part 200 is matched with the vehicle body mounting environment through simple injection molding, and ensures fixation of the chip 204 and assembly of the first connecting part 100; the partition 208 realizes positioning of the connecting piece 300 in the second connecting part 200, and prevents short circuit of the connecting piece 300; the limiting piece 209 fixes the position of the chip 204, and prevents displacement of the chip 204, which causes short circuit of the chip 204 and failure of the displacement sensing signal of the chip 204. The through hole 102 can realize positioning and assembly of the first connecting part 100 and the second connecting part 200, and realize fixation and sealing in cooperation with the fusion glue. The connecting piece 300 and the chip 204 are connected, and can conduct signals. The glue is filled between the chip 204 and the connecting piece 300 in the second connecting part 200, covers the chip 204 and the connecting piece 300, and ensures that water vapor and air cannot contact the chip 204.

[0055] That is, the wheel speed sensor provided by the embodiment of the application at least has the following advantages:

[0056] 1. A novel design is provided for the wheel speed sensor;

[0057] 2. The universality is improved. When the first connecting part 100 is a kind of connector, the first connecting part 100 can be used directly and different second connecting parts 200 can be assembled directly;

[0058] 3. The traditional skeleton design is omitted. The chip 204 is directly assembled on the second connecting part 200, and does not need to be positioned by injection molding in a mold;

[0059] 4、The design chip 204 and the connecting piece 300 are sealed by using transparent glue, the state of the chip 204 and the connecting piece 300 can be directly observed by naked eyes, and the traditional injection design needs to be tested under X-ray equipment to test the state of the chip 204;

[0060] 5, the chip 204 and the second connecting part 200 are assembled, the part state of the product can be directly analyzed by disassembling, but the chip 204 of the traditional design is injected in the injection material, and it is difficult to take out the chip 204 alone;

[0061] 6, the chip 204 and the second connecting part 200 are assembled, the thickness of the second connecting part 200 can be tested first, the test is simple and accurate, the chip 204 of the traditional design is injected in the injection material, and the key size thickness test is difficult and not accurate.

[0062] Although the utility model has been illustrated and described by referring to certain preferred embodiments of the utility model, those skilled in the art should understand that the above content is further detailed description of the utility model combined with specific embodiments, and the specific implementation of the utility model cannot be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple inferences or substitutions, without departing from the spirit and scope of the utility model.

Claims

1. A wheel speed sensor, characterized by, The application relates to a wheel speed sensor. The wheel speed sensor comprises a first connecting part, one end of which is used for connecting an external device, and a second connecting part. The second connecting part comprises a first part and a second part connected with each other, the first conductive part penetrates through the first part so that the first part is plugged with the first connecting part, and the second part is provided with a containing part, the containing part is provided with a chip, and the first conductive part is electrically connected with the chip after being inserted into the first part.

2. The wheel speed sensor of claim 1, wherein, The wheel speed sensor further comprises a connecting piece used for connecting the first conductive part with the chip.

3. The wheel speed sensor of claim 1, wherein, The containing part is provided with a plurality of partition pieces, the plurality of partition pieces are arranged at intervals along a first direction, and the partition pieces are located between the two first conductive parts.

4. The wheel speed sensor of claim 1, wherein, The containing part is further provided with a plurality of limiting pieces, at least part of the limiting pieces are in interference fit with the chip.

5. The wheel speed sensor of claim 1, wherein, One side of the first connecting part facing the first part is provided with a plugging part, the first part is provided with a plugging interface matched with the plugging part, the plugging part is inserted into the plugging interface so that the first conductive part is inserted into the containing part.

6. The wheel speed sensor of claim 1, wherein, Along a second direction, one side of the containing part is open, and one side is closed, the closed end is provided with a boss, the boss extends along the second direction, and the second direction intersects with the first direction.

7. The wheel speed sensor of claim 6, wherein, The open end is provided with a protective film, the protective film is in contact with the connecting piece, the first conductive part and the chip and covers the connecting piece, the first conductive part and the chip.

8. The wheel speed sensor of claim 6, wherein, The containing part comprises a first bottom wall and a second bottom wall, the first bottom wall and the second bottom wall are arranged at intervals along the second direction, the chip is in contact with the first bottom wall, and the boss is connected with the second bottom wall.

9. The wheel speed sensor of claim 1, wherein, The first part further comprises an extension part, the extension part extends along a first direction, the extension part is provided with a mounting hole, the mounting hole penetrates through the extension part along a third direction, the mounting hole is provided with a bushing, and the third direction intersects with the first direction and the second direction respectively.

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