Wheel speed sensor and automobile

Abstract

The utility model provides a wheel speed sensor and an automobile. The wheel speed sensor comprises a sensor body and an installation assembly. The sensor main body is formed by integral injection molding; the mounting assembly is arranged on the outer side of the sensor main body through secondary injection molding based on a preset mold, so that the mounting assembly is arranged on the sensor main body. According to the wheel speed sensor, the sensor body is arranged to be of a universal structure, the installation assemblies are correspondingly designed according to the actual requirements of customers, the platform design of the wheel speed sensor is achieved, the development cost of the wheel speed sensor can be effectively reduced, and the development cycle of different products is greatly shortened.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wheel speed sensors, and relates to a wheel speed sensor and a vehicle. BACKGROUND

[0002] A wheel speed sensor is a sensor used to measure the rotation speed of a vehicle wheel. For modern vehicles, wheel speed information is essential, and vehicle dynamics control (VDC), electronic stability program (ESP), anti-lock braking system (ABS), and control systems of automatic transmissions all require wheel speed information. Therefore, the wheel speed sensor is one of the most critical sensors in modern vehicles. With the intelligentization and electrification of the automotive industry, the wheel speed sensor is increasingly widely used in automatic driving and intelligent transportation.

[0003] In the manufacturing of traditional wheel speed sensors, an integrated molding injection process is usually used to wrap injection materials on sensor chips, sensor cables and metal bushings to meet the sealing and installation requirements of the chips.

[0004] The mechanism of the current wheel speed sensor mainly includes several parts: 1, a skeleton assembly; 2, a main body structure; and 3, a metal bushing. Most of the current wheel speed sensors are integrally injection molded, and it is difficult to unify and follow the installation and use requirements of different projects, especially different customers, which leads to the need to redevelop a complete set of molds for different projects, increasing the development cost and prolonging the development time cycle, thereby resulting in high development and production costs and long cycle of the mold. CONTENT OF THE INVENTION

[0005] The application aims to provide a wheel speed sensor and a vehicle, which solve the technical problem of long mold development cycle and high production cost caused by the fact that the wheel speed sensor integrally injection molded in the prior art cannot meet the installation and use requirements of different customers.

[0006] To achieve the above-mentioned purpose and other related purposes, the first aspect of the application provides a wheel speed sensor. The wheel speed sensor comprises a sensor main body and a mounting assembly. The sensor main body is integrally injection molded. The mounting assembly is secondarily injection molded on the outer side of the sensor main body based on a preset mold, so as to set the mounting assembly on the sensor main body.

[0007] In some embodiments of the first aspect of the present application, the sensor body comprises a sensor skeleton, a sensor chip and a wire harness; the sensor chip is arranged at one end of the sensor skeleton; the wire harness is connected with the other end of the sensor skeleton to further electrically connect with the sensor chip.

[0008] In some embodiments of the first aspect of the present application, the sensor skeleton, the sensor chip and the wire harness are based on plastic particles to injection mold the sensor body.

[0009] In some embodiments of the first aspect of the present application, the wire harness is connected with the sensor skeleton through a wire harness connector.

[0010] In some embodiments of the first aspect of the present application, the sensor skeleton is provided with a receiving cavity to install the sensor chip.

[0011] In some embodiments of the first aspect of the present application, the mounting assembly comprises a connecting piece and a bushing; the bushing is wrapped outside the sensor body; the connecting piece is located at one side of the bushing.

[0012] In some embodiments of the first aspect of the present application, the connecting piece is provided with a mounting hole to install the wheel speed sensor on the automobile through the mounting hole.

[0013] In some embodiments of the first aspect of the present application, the preset mold at least comprises a first preset mold and a second preset mold; the mounting assembly is based on the first preset mold to be over-molded outside the sensor body, or based on the second preset mold to be over-molded outside the sensor body.

[0014] In some embodiments of the first aspect of the present application, the first preset mold and the second preset mold are not the same.

[0015] To achieve the above object and other related objects, the second aspect of the present application provides an automobile. The automobile comprises the wheel speed sensor of any one of the first aspect of the present application; the wheel speed sensor is arranged outside the tire of the automobile; or the wheel speed sensor is arranged at the front wheel brake disc of the automobile.

[0016] As described above, the wheel speed sensor and the automobile of the present application have the following beneficial effects:

[0017] Firstly, the sensor body part of the wheel speed sensor of the present application adopts a universal structure, which can adapt to the corresponding mounting assembly of different customer requirements;

[0018] Secondly, for different customer installation requirements, it is only necessary to design the corresponding installation component mold, and then perform secondary injection molding of the universal structure sensor body and bushing according to the designed mold;

[0019] Third, the platform-based design of the wheel speed sensor in this application can effectively reduce the development cost of the wheel speed sensor and significantly shorten the development cycle of different products. Attached Figure Description

[0020] Figure 1 The diagram shown is a structural schematic of the wheel speed sensor described in an embodiment of this application.

[0021] Figure 2 The diagram shown is a cross-sectional schematic of the wheel speed sensor described in an embodiment of this application.

[0022] Figure 3 The diagram shown is a structural schematic of another wheel speed sensor described in an embodiment of this application.

[0023] Figure 4 The diagram shown is a cross-sectional schematic of another wheel speed sensor described in an embodiment of this application.

[0024] Figure 5 The diagram shown is a structural schematic of the sensor body described in an embodiment of this application.

[0025] Figure 6 The diagram shown is a cross-sectional view of the sensor body described in an embodiment of this application.

[0026] Figure 7 The diagram shown is a production flow chart of the wheel speed sensor described in the embodiments of this application.

[0027] Component designation explanation

[0028] 10 Wheel speed sensors

[0029] 1. Sensor body

[0030] 11 Sensor skeleton

[0031] 12 sensor chips

[0032] 13 Wire Harness

[0033] 131 Wire Harness Connector

[0034] 2. Install components

[0035] 21 Connectors

[0036] 22 Bushing

[0037] 3. Plastic particles Detailed Implementation

[0038] Following specific examples illustrate the embodiments of the present application, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure of the specification. The present application can also be implemented or applied by other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0039] It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The actual implementation of each component may be a random change in shape, number and proportion, and the layout pattern of the components may also be more complex.

[0040] In the embodiments of the present application, "first", "second", etc. are used to distinguish the same or similar items with basically the same function and effect. For example, the first preset mold and the second preset mold are only used to distinguish different preset molds, which are designed for different installation components corresponding to different customer needs, and do not limit the sequence. Those skilled in the art can understand that "first", "second", etc. do not limit the number and execution order, and "first", "second", etc. also do not necessarily mean different.

[0041] The following embodiments of the present application provide a wheel speed sensor and a vehicle. By designing the sensor body of the wheel speed sensor as a universal structure, and then designing a mold of the installation component corresponding to different installation and application needs of different customers, the platform design of the wheel speed sensor is realized, which can effectively reduce the development cost of the wheel speed sensor and greatly reduce the development cycle of different products. The wheel speed sensor and the vehicle of the present application solve the technical problems of long mold development cycle and high production cost in the prior art due to the fact that the integrated injection molded wheel speed sensor cannot meet the installation and use needs of different customers.

[0042] The principles and implementation modes of a wheel speed sensor and a vehicle of the present embodiment will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can understand the wheel speed sensor and the vehicle of the present embodiment without creative labor.

[0043] Please refer to Figure 1 and Figure 2 , Figure 1 shows a structural schematic diagram of the wheel speed sensor described in the embodiments of the present application, Figure 2 shows a cross-sectional schematic diagram of the wheel speed sensor described in the embodiments of the present application.

[0044] As shown in Figure 1 and Figure 2 , the wheel speed sensor 10 comprises a sensor body 1 and a mounting assembly 2; the sensor body 1 is integrally injection molded, and the mounting assembly 2 is secondarily injection molded on the outside of the sensor body 1 based on a preset mold to set the mounting assembly 2 on the sensor body 1.

[0045] Specifically, the preset mold at least comprises a first preset mold and a second preset mold, and the mounting assembly 2 is secondarily injection molded on the outside of the sensor body 1 based on the first preset mold, or secondarily injection molded on the outside of the sensor body 1 based on the second preset mold.

[0046] In this embodiment, the mounting assembly 2 is secondarily injection molded on the outside of the sensor body 1 based on the first preset mold.

[0047] Please refer to Figure 3 and Figure 4 , Figure 3 show the structure schematic diagram of the wheel speed sensor according to another embodiment of the present application, Figure 4 show the cross-sectional schematic diagram of the wheel speed sensor according to another embodiment of the present application.

[0048] As shown in Figure 3 and Figure 4 , the mounting assembly 2 is secondarily injection molded on the outside of the sensor body 1 based on the second preset mold.

[0049] In some implementations, due to the differences of vehicles produced by different customers, it is necessary to design corresponding wheel speed sensors 10 for different vehicles for installation and application, therefore, the wheel speed sensor 10 secondarily injection molded based on the second preset mold is different from the wheel speed sensor 10 secondarily injection molded based on the first preset mold, to adapt to different vehicles respectively.

[0050] It should be noted that the first preset mold and the second preset mold are not the same, and the first preset mold and the second preset mold are designed according to the installation and application requirements of different customers. Moreover, a third preset mold or a fourth preset mold can be designed according to the installation and application requirements of other customers.

[0051] It should be noted that the preset mold is not unique and fixed, and it can be customized and designed according to the requirements of different customers, and different preset molds can be secondarily injection molded on the sensor body 1 according to the embodiments of the present application to obtain the wheel speed sensor 10 that meets the requirements of customers.

[0052] Particularly, the sensor body 1 adopts a general structure, and the sensor body 1 comprises a sensor skeleton 11, a sensor chip 12 and a wire harness 13.

[0053] As shown in Figure 5 and Figure 6 , Figure 5 a structure diagram of the sensor body according to the embodiment of the present application is shown, Figure 6 a cross-sectional diagram of the sensor body according to the embodiment of the present application is shown.

[0054] As shown in Figure 5 and Figure 6 , the sensor body 1 comprises a sensor skeleton 11, a sensor chip 12 and a wire harness 13.

[0055] Specifically, the sensor chip 12 is arranged at one end of the sensor skeleton 11; the wire harness 13 is connected with the other end of the sensor skeleton 11, so as to be further electrically connected with the sensor chip 12.

[0056] In the embodiment, the sensor skeleton 11, the sensor chip 12 and the wire harness 13 are based on plastic particles injection molding to form the sensor body 1.

[0057] The wire harness 13 refers to a collection of wires combined by multiple wires or cables, which are usually bundled together and may contain protective sleeves or other types of insulation materials. The wire harness 13 is used for transmitting electrical signals or power in electrical and electronic systems, and is an important part of connecting various electronic components and devices.

[0058] The sensor skeleton 11 is a component for providing support and protection for the sensor chip 12 and its connection structure, for ensuring the stability and functionality of the sensor.

[0059] In the embodiment, the wire harness 13 is connected with the sensor skeleton 11 through a wire harness connector 131.

[0060] In the embodiment, the sensor skeleton 11 is provided with a containing cavity (not shown in the figure), which is used for placing the sensor chip 12.

[0061] In some implementations, the mounting assembly 2 comprises a connecting piece 21 and a bushing 22.

[0062] As shown in Figures 1 to 4 , the mounting assembly 2 comprises a connecting piece 21 and a bushing 22; the bushing 22 is wrapped outside the sensor body 1, and the connecting piece 21 is located at one side of the bushing 22.

[0063] In the embodiment, the connecting member 21 is provided with a mounting hole, so that the wheel speed sensor 10 is mounted on the automobile through the mounting hole.

[0064] Referring to Figure 7 , a production flowchart of the wheel speed sensor according to the embodiments is shown.

[0065] As Figure 7 shown, after the sensor skeleton 11, the sensor chip 12 and the wire harness 13 are connected, injection molding is performed based on plastic particles 3 to form a sensor main body 1, which is a general type structure. The sensor main body 1 and the bushing 22 are subjected to secondary injection molding based on the plastic particles 3 and a mounting mold designed according to customer requirements, so as to obtain the wheel speed sensor 10 according to the embodiments.

[0066] In some implementations, the embodiments also provide an automobile including the wheel speed sensor 10 according to any of the embodiments, which is arranged outside a tire of the automobile or arranged on a front wheel brake disc of the automobile.

[0067] In the embodiment, the automobile includes four wheel speed sensors 10, so as to ensure that the wheel speed sensors 10 can detect the rotation speeds of all wheels and further support the normal operation of safety systems such as ABS and ESC.

[0068] In summary, the embodiments provide a wheel speed sensor and an automobile. First, the sensor main body part of the wheel speed sensor according to the embodiments adopts a general type structure, which can adapt to corresponding mounting assemblies of different customer requirements. Second, for mounting requirements of different customer requirements, only a mold of the corresponding mounting assembly needs to be designed, and then the general type structure of the sensor main body and the bushing are subjected to secondary injection molding according to the designed mold, so as to achieve the mounting requirements. Third, the platform design of the wheel speed sensor according to the embodiments can effectively reduce the development cost of the wheel speed sensor and greatly reduce the development cycle of different products. Therefore, the embodiments effectively overcome the various shortcomings in the prior art and have high industrial utilization value.

[0069] The descriptions of the corresponding flows or structures of the above-mentioned various drawings each have a focus, and the parts not described in detail in a certain flow or structure can be referred to the related descriptions of other flows or structures.

[0070] The above-mentioned embodiments only exemplarily illustrate the principles and effects of the embodiments, and are not used to limit the embodiments. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the embodiments. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought of the embodiments should be covered by the claims of the embodiments.

Claims

1. A wheel speed sensor, characterized by, The wheel speed sensor comprises a sensor body and a mounting assembly; The sensor body is integrally injection molded; The mounting assembly is secondarily injection molded on the outside of the sensor body based on a preset mold to set the mounting assembly on the sensor body; The sensor body is a general structure; The mounting assembly comprises a connecting piece and a bushing, the bushing is wrapped on the outside of the sensor body, and the connecting piece is located on one side of the bushing; The preset mold comprises at least a first preset mold and a second preset mold; The mounting assembly is secondarily injection molded on the outside of the sensor body based on the first preset mold or secondarily injection molded on the outside of the sensor body based on the second preset mold; The first preset mold is different from the second preset mold.

2. The wheel speed sensor of claim 1, wherein, The sensor body comprises a sensor skeleton, a sensor chip and a wire harness; The sensor chip is arranged at one end of the sensor skeleton; The wire harness is connected with the other end of the sensor skeleton to further electrically connect with the sensor chip.

3. The wheel speed sensor of claim 2, wherein, The sensor skeleton, the sensor chip and the wire harness are injection molded based on plastic particles to form the sensor body.

4. The wheel speed sensor of claim 2, wherein, The wire harness is connected with the sensor skeleton through a wire harness connector.

5. The wheel speed sensor of claim 2, wherein, The sensor skeleton is provided with a receiving cavity to install the sensor chip.

6. The wheel speed sensor of claim 1, wherein, The connecting piece is provided with a mounting hole to install the wheel speed sensor on the automobile through the mounting hole.

7. An automobile characterized by comprising: The automobile comprises the wheel speed sensor according to any one of claims 1 to 6; The wheel speed sensor is arranged on the outside of the tire of the automobile; or The wheel speed sensor is arranged on the front wheel brake disc of the automobile.

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