Elastic wave sensor and vehicle

Abstract

The application provides an elastic wave sensor and a vehicle. The elastic wave sensor comprises a shell, a cavity is arranged in the shell, a PCB board is arranged in the cavity, a sensing sheet is integrated on the PCB board and is used for converting an elastic wave signal into an electric signal, and a signal transmission sheet is arranged in the cavity and is located between the sensing sheet and the shell and is used for transmitting the elastic wave signal from the shell to the sensing sheet. The sensing sheet of the elastic wave sensor is directly integrated on the PCB board, and the signal transmission sheet is arranged between the shell and the sensing sheet, so that the high-cost FPC is cancelled, the material cost is greatly reduced, the related welding and mounting processes are saved, and the effect of cost reduction and benefit increase is achieved.

Description

Technical Field

[0001] This application relates to the field of sensor technology, and more specifically, to an elastic wave sensor and a vehicle. Background Technology

[0002] In the existing elastic wave sensor structure, the sensing element is soldered onto a flexible printed circuit board (FPC), and the FPC is attached to the bottom cover of the module. The signal transmission path is bottom cover → FPC → sensing element → PCB → controller. This design has drawbacks such as high FPC material cost and complex production process (requiring FPC soldering and attachment). Utility Model Content

[0003] This application provides at least one elastic wave sensor and vehicle. The sensing element of the elastic wave sensor is integrated on a PCB, and a signal transmission element is set between the housing and the sensing element. This design eliminates the high-cost FPC, which not only greatly reduces material costs, but also saves related soldering and mounting processes, thereby achieving the effect of cost reduction and efficiency improvement.

[0004] In a first aspect, embodiments of this application provide an elastic wave sensor, including: The shell has a cavity inside; A PCB board is disposed in the cavity; The sensing element, integrated on the PCB board, is used to convert elastic wave signals into electrical signals; A signal transmission plate is disposed in the cavity and located between the sensing plate and the housing, for transmitting elastic wave signals from the housing to the sensing plate.

[0005] In one alternative implementation, the signal transmission piece is an elastic structure.

[0006] In one alternative embodiment, a mounting structure is further included, disposed in the housing, for mounting the elastic wave sensor at the location to be measured.

[0007] In one alternative embodiment, the mounting structure is a double-sided adhesive applied to the surface of the housing.

[0008] In one alternative embodiment, a connector is further included, which is electrically connected to the PCB board for outputting electrical signals from the sensing element.

[0009] In one alternative embodiment, the connector includes at least one pin, the first end of each pin being electrically connected to the PCB board, and the second end of each pin being used to connect to an external controller.

[0010] In one optional embodiment, the PCB board is provided with at least one connector hole, and the first end of each PIN pin is respectively inserted into the corresponding connector hole, and the first end of each PIN pin is respectively interference-fitted with the corresponding connector hole.

[0011] In one alternative embodiment, the connector and the housing are integrally formed by inlay injection molding.

[0012] In one alternative implementation, a controller is also included, integrated into the PCB board, for processing electrical signals from the sensing element.

[0013] Secondly, embodiments of this application also provide a vehicle, characterized in that it includes a vehicle body and an elastic wave sensor as described in any of the above embodiments, wherein the elastic wave sensor is mounted on the vehicle body.

[0014] The above-mentioned technical solution of this application has the following beneficial technical effects: In the elastic wave sensor of this application embodiment, the sensing element is directly integrated on the PCB board, and a signal transmission element is set between the housing and the sensing element. This design eliminates the high-cost FPC, which not only greatly reduces material costs, but also saves the related soldering and mounting processes, thereby achieving the effect of cost reduction and efficiency improvement.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of an elastic wave sensor provided in an embodiment of this application is shown; Figure 2 A three-dimensional assembly diagram of an elastic wave sensor provided in an embodiment of this application is shown; In the picture: 1. Housing; 11. Upper housing; 12. Lower cover; 13. Connector; 2. PCB board; 21. Connector socket; 3. Sensor plate; 4. Signal transmission plate; 5. Mounting structure; 6. Connector; 61. Pin. Detailed Implementation

[0018] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0019] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated 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 application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] 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 application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this application, it should be understood that 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", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] refer to Figure 1 and Figure 2 This application provides an elastic wave sensor, including a housing 1, a PCB board 2, a sensing element 3, and a signal transmission element 4. A cavity is provided within the housing 1. The PCB board 2 is disposed within the cavity. The sensing element 3 is integrated into the PCB board 2 and is used to convert the elastic wave signal into an electrical signal. The signal transmission element 4 is disposed within the cavity and located between the sensing element 3 and the housing 1, and is used to transmit the elastic wave signal from the housing 1 to the sensing element 3. Compared to the prior art, the sensing element 3 of this elastic wave sensor is directly integrated onto the PCB board 2, and the signal transmission element 4 is disposed between the housing 1 and the sensing element 3. This design eliminates the need for a high-cost FPC (Flexible Printed Circuit).

[0024] In some embodiments, the housing 1 is manufactured by injection molding.

[0025] In some embodiments, such as Figure 1 As shown, the housing 1 includes an upper shell 11 and a lower cover 12, which are sealed together to form a cavity. In a specific configuration, a groove is provided on the side of the upper shell 11 facing the lower cover 12; when the lower cover 12 is sealed to the upper shell 11, the groove is closed to form the cavity. Alternatively, the upper shell 11 and the lower cover 12 can be sealed together by bonding, laser welding, or other methods. This application does not specifically limit the specific methods used in this embodiment.

[0026] In some embodiments, such as Figure 1 As shown, the housing 1 is provided with a connector 13 for connecting to an external controller. In a specific configuration, the connector 13 can be located on the side of the upper housing 11 opposite to the lower cover 12, and the connector 13 and the upper housing 11 can be integrally formed by injection molding. This embodiment of the application does not impose specific limitations on this aspect.

[0027] In some embodiments, the signal transmission piece 4 is fixed to the lower cover 12, and the signal transmission piece 4 contacts the sensing piece 3 when the upper shell 11 and the lower cover 12 are sealed together. In specific settings, the signal transmission piece 4 can be fixed to the lower cover 12 by means of bonding, welding, etc. This application does not specifically limit this aspect.

[0028] In some embodiments, the signal transmission piece 4 is an elastic structure. The elastic structure can fill the tiny gap between the bottom cover and the sensing piece 3, preventing poor contact caused by assembly tolerances in the rigid material. In specific configurations, the elastic structure can be a metal spring or a polymer elastomer (such as silicone or polyurethane). This application does not specifically limit this aspect.

[0029] In some embodiments, such as Figure 1As shown, the elastic wave sensor also includes a mounting structure 5, which is disposed on the housing 1 and used to mount the elastic wave sensor at the position to be measured. In a specific configuration, the mounting structure 5 can be a double-sided adhesive applied to the surface of the housing 1 (such as the surface of the lower cover 12 facing away from the upper cover 11). This embodiment of the application does not impose specific limitations on this aspect.

[0030] In some embodiments, such as Figure 1 As shown, the elastic wave sensor also includes a connector 6, which is electrically connected to the PCB board 2 and is used to output the electrical signal of the sensing element 3. The connector 6 can electrically connect the PCB board 2 to an external controller to transmit the electrical signal of the sensing element 3 to the external controller.

[0031] In some embodiments, such as Figure 2 As shown, connector 6 may include at least one PIN pin 61. The first end of each PIN pin 61 is electrically connected to PCB board 2, and the second end of each PIN pin 61 is used to connect to an external controller. In a specific configuration, the PIN pin 61 is disposed in the upper housing 11, with its first end located within the cavity and electrically connected to PCB board 2, and its second end located within connector 13. When the connector of the external controller is connected to connector 13, the second end of the PIN pin 61 can be electrically connected to the external controller through the connector. This embodiment exemplarily shows that the number of PIN pins 61 is four, arranged in a row. This embodiment does not impose specific limitations on this aspect.

[0032] In some embodiments, such as Figure 2 As shown, the PCB board 2 has at least one connector hole 21. The first end of each pin 61 is inserted into the corresponding connector hole 21, and the first end of each pin 61 is interference-fitted with the corresponding connector hole 21. In specific setup, the first end of the pin 61 can be pressed into the corresponding connector hole using a tooling pressure, so that the first end of the pin 61 is interference-fitted with the corresponding connector hole, thereby realizing the mechanical and electrical connection between the pin 61 and the PCB board 2. Assembly by interference fit is simple and provides a high-strength connection between the pin 61 and the PCB board 2, which can withstand slight vibrations during use. In addition, since no heating is required, the pin 61 and the PCB board 2 will not be damaged by heating.

[0033] In some embodiments, the connector 6 and the housing 1 are integrally formed by insert injection molding. During injection molding, the connector 6 (PIN pin 61) is placed into the mold of the housing 1, and then molten plastic is injected into the mold. After the plastic cools and solidifies, the connector 6 and the housing 1 are formed into an integral structure. Through this integral injection molding method, a high connection strength can be obtained between the connector 6 and the housing 1.

[0034] In some embodiments, the elastic wave sensor further includes a controller integrated on the PCB board 2 for processing the electrical signals of the sensing element 3. The controller's integration on the PCB board 2 allows the PCB board 2 to directly transmit the electrical signals of the sensing element 3 to the controller for internal sensor processing.

[0035] In this embodiment of the elastic wave sensor, the sensing element 3 is directly integrated on the PCB board 2, and a signal transmission element 4 is set between the housing 1 and the sensing element 3. This design eliminates the high-cost FPC, which not only greatly reduces material costs, but also saves the related soldering and mounting processes, thereby achieving the effect of cost reduction and efficiency improvement.

[0036] This application also provides a vehicle, including a vehicle body and an elastic wave sensor, the elastic wave sensor being mounted on the vehicle body. The elastic wave sensor is the elastic wave sensor described above; its specific structure has been described in detail previously and will not be repeated here.

[0037] The vehicle in this embodiment includes an elastic wave sensor. The sensing element 3 of the elastic wave sensor is directly integrated on the PCB board 2, and a signal transmission element 4 is provided between the housing 1 and the sensing element 3. This design eliminates the high-cost FPC, which not only greatly reduces material costs, but also saves the related welding and mounting processes, thereby achieving the effect of cost reduction and efficiency improvement.

[0038] The vehicle is equipped with elastic wave sensors, which can detect contact or collision between the vehicle and external objects.

[0039] It should be understood that this elastic wave sensor can be applied not only to vehicle bodies, but also to other products for the detection of contact, collision, human-computer interaction, etc.

[0040] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0041] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An elastic wave sensor, characterized by, include: The shell has a cavity inside; A PCB board is disposed in the cavity; The sensing element, integrated on the PCB board, is used to convert elastic wave signals into electrical signals; A signal transmission plate is disposed in the cavity and located between the sensing plate and the housing, for transmitting elastic wave signals from the housing to the sensing plate.

2. The elastic wave sensor of claim 1, wherein, The signal transmission piece is an elastic structure.

3. The elastic wave sensor of claim 1 or 2, wherein, It also includes a mounting structure disposed in the housing for mounting the elastic wave sensor at the position to be measured.

4. The elastic wave sensor of claim 3, wherein, The mounting structure is a double-sided adhesive tape applied to the surface of the housing.

5. The elastic wave sensor of claim 1 or 2, wherein, It also includes a connector that is electrically connected to the PCB board and is used to output electrical signals from the sensing element.

6. The elastic wave sensor of claim 5, wherein, The connector includes at least one pin, the first end of each pin is electrically connected to the PCB board, and the second end of each pin is used to connect to an external controller.

7. The elastic wave sensor of claim 6, wherein, The PCB board is provided with at least one connector hole, and the first end of each PIN pin is respectively inserted into the corresponding connector hole, and the first end of each PIN pin is respectively interference-fitted with the corresponding connector hole.

8. The elastic wave sensor of claim 5, wherein, The connector and the housing are integrally formed by injection molding.

9. The elastic wave sensor of claim 1 or 2, wherein, It also includes a controller, which is integrated into the PCB board, for processing the electrical signals of the sensing element.

10. A vehicle characterized by comprising: The system includes a vehicle body and an elastic wave sensor as described in any one of claims 1 to 9, wherein the elastic wave sensor is mounted on the vehicle body.

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