A piezoelectric transducer

Abstract

The utility model belongs to the technical field of transmitter, concretely relates to a piezoelectric transmitter, the utility model discloses: force electricity conversion module, including the shell and being located in the convex post of shell middle, the convex post is equipped with piezoelectric subassembly, and the annular groove is formed between the convex post and shell, insulation spacer ring, the sleeve is established on the outer peripheral surface of convex post, flexible circuit board, the sleeve is established on the outer peripheral surface of insulation spacer ring, the sealing plate is embedded in the upper end surface of shell. The utility model is used to solve the technical problem of piezoelectric transmitter in the prior art due to its big volume, heavy quality and difficult to use in the equipment of limited space, even if can use also increased the technical problem of the overall system burden of equipment.

Description

Technical Field

[0001] This utility model belongs to the field of transmitter technology, specifically relating to a piezoelectric transmitter. Background Technology

[0002] Among various types of transmitters, piezoelectric transmitters convert pressure into 4-20mA electrical signals. They possess advantages such as excellent dynamic response performance, high sensitivity and measurement accuracy, and strong environmental adaptability. They are particularly useful in emerging industries such as robotics and dynamic testing, automotive safety and performance optimization, medical and rehabilitation equipment, and drones, where they are frequently used for real-time monitoring of dynamic force changes. However, due to the high integration of modern equipment, existing bulky piezoelectric transmitters cannot be used in space-constrained environments. Furthermore, their heavy weight and large size increase the overall system burden. Therefore, achieving a compact and lightweight design for piezoelectric force transmitters is a primary issue that needs to be addressed in practical applications. Utility Model Content

[0003] This invention provides a piezoelectric transmitter to solve the technical problem that existing piezoelectric transmitters are difficult to use in space-constrained equipment due to their large size and heavy weight, and even if they can be used, they increase the burden on the overall system. This utility model includes: a force-to-electric conversion module, comprising a housing and a protrusion disposed in the middle of the housing, wherein a piezoelectric component is disposed inside the protrusion, and an annular groove is formed between the protrusion and the housing; An insulating spacer is fitted onto the outer circumferential surface of the protrusion. A flexible circuit board is fitted onto the outer peripheral surface of the insulating spacer; The sealing plate is embedded in the upper end face of the housing.

[0004] This invention replaces the existing PCB board with a flexible circuit board. By utilizing the bendable nature of the flexible circuit board, it is arranged inside the force-to-electricity conversion module to save space. As the space is reduced, the shape of the shell can be reduced, and the weight can also be reduced.

[0005] Furthermore: the upper end face of the protruding post is flush with the upper end face of the housing, the sealing plate is annular, and the upper end face of the housing is provided with a stepped hole adapted to the thickness of the sealing plate, and the upper end face of the protruding post is provided with a stepped shaft adapted to the thickness of the sealing plate. The beneficial effect of this step is that it further compresses the overall height of the entire force-to-electricity conversion module to save space.

[0006] Furthermore, the flexible circuit board is bonded to the insulating spacer. The beneficial effect of this step is that the insulating spacer serves as an insulator.

[0007] Furthermore, the outer circumferential surface of the protrusion is provided with a groove that matches the insulating spacer. The beneficial effect of this step is that the groove can fix the insulating spacer and prevent it from sliding up and down on the protrusion.

[0008] Furthermore: the insulating spacer ring has an opening; The flexible circuit board is adapted to the insulating spacer. The beneficial effects of this step are that the insulating spacer with an opening can not only avoid the piezoelectric component's wiring, but the opening can also allow the insulating spacer to open slightly, which is convenient for installation and fastening with the protrusion.

[0009] The beneficial effects of this utility model are: Current mainstream piezoelectric transmitters suffer from the predicament of placing complex conditioning circuits outside the transmitter itself. However, this application can place complex conditioning circuits inside the transmitter through a flexible circuit board. Furthermore, by optimizing the structure of components such as the housing, protrusions, and sealing plates of the force-to-electric conversion module, the application achieves the goal of reducing size and weight, thereby ensuring the transmitter's compactness, simplicity, and lightweight design. Attached Figure Description

[0010] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 An exploded perspective view of a piezoelectric transmitter provided by this utility model.

[0012] Figure label: 1-Power-to-electricity conversion module; 2-Insulating spacer; 3-Flexible circuit board; 31-Electronic components; 4-Sealing plate. Detailed Implementation

[0013] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0014] 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 utility model and simplifying the description, and are not intended to 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 utility model.

[0015] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0016] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] Implementation of this application, for example Figure 1 As shown, this application provides a piezoelectric transmitter.

[0019] This application includes: a force-to-electricity conversion module 1, comprising a housing and a protrusion disposed in the middle of the housing, a piezoelectric component disposed within the protrusion, and an annular groove formed between the protrusion and the housing, wherein the piezoelectric component includes a terminal block and piezoelectric plates connected to the terminal block, etc. Figure 1 For example, the bottom surface of the mounting base near the housing is the stress-bearing surface; Insulating spacer 2 is sleeved on the outer circumferential surface of the protrusion; The flexible circuit board 3 is sleeved on the outer peripheral surface of the insulating spacer 2; The sealing plate 4 is embedded in the upper end face of the housing.

[0020] This application replaces the existing PCB board with a flexible circuit board 3. By utilizing the bendable characteristics of the flexible circuit board 3, it is arranged inside the force-to-electricity conversion module 1 to save space. As the space is reduced, the shape of the shell can be reduced and the weight can also be reduced.

[0021] Based on the above technical solution, the upper end face of the protruding post is flush with the upper end face of the housing, the sealing plate 4 is annular, and the upper end face of the housing is provided with a stepped hole adapted to the thickness of the sealing plate 4. The upper end face of the protruding post is provided with a stepped shaft adapted to the thickness of the sealing plate 4, further compressing the overall height of the entire force-to-electricity conversion module 1 to save space.

[0022] Based on the above technical solution, the flexible circuit board 3 is bonded to the insulating spacer 2. The front side of the flexible circuit board 3 is provided with electronic components 31 and circuits connecting these electronic components 31, so that the back side of the flexible circuit board 3 is completely attached to the insulating spacer 2, and the insulating spacer 2 plays an insulating role.

[0023] Based on the above technical solution, a groove adapted to the insulating spacer 2 is provided on the outer peripheral surface of the protrusion. The groove is used to fix the insulating spacer 2 and prevent it from sliding up and down on the protrusion.

[0024] Based on the above technical solution, the insulating spacer 2 is provided with an opening; The flexible circuit board 3 is adapted to the insulating spacer 2. The insulating spacer 2 is made of materials such as ceramic or insulating plastic. If the material of the insulating spacer 2 has a certain elasticity, the inner diameter of the insulating spacer 2 can be made slightly smaller than the diameter of the protrusion. Then, the open insulating spacer is fitted onto the protrusion, and the elastic deformation is used to hold the protrusion tightly. If the material is rigid, the inner diameter of the insulating spacer 2 can be slightly larger than the diameter of the protrusion. An elastic pad can be laid on the inner circumference of the insulating spacer 2, and the inner diameter of the elastic pad is smaller than the diameter of the protrusion to achieve a fastening effect. In addition, the opening of the inner insulating ring 2 can also avoid the piezoelectric component circuit.

[0025] The piezoelectric transmitters mentioned above can achieve the purpose of weight reduction and size reduction to meet the needs of highly integrated equipment.

[0026] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A piezoelectric transmitter, characterized in that, include: A force-to-electric conversion module includes a housing and a protrusion disposed in the middle of the housing. A piezoelectric component is disposed inside the protrusion, and an annular groove is formed between the protrusion and the housing. An insulating spacer is fitted onto the outer circumferential surface of the protrusion. A flexible circuit board is fitted onto the outer peripheral surface of the insulating spacer; The sealing plate is embedded in the upper end face of the housing.

2. The piezoelectric transmitter according to claim 1, characterized in that, The upper end face of the protruding post is flush with the upper end face of the housing. The sealing plate is annular, and the upper end face of the housing is provided with a stepped hole adapted to the thickness of the sealing plate. The upper end face of the protruding post is provided with a stepped shaft adapted to the thickness of the sealing plate.

3. The piezoelectric transmitter according to claim 1, characterized in that, The flexible circuit board is bonded to the insulating spacer.

4. The piezoelectric transmitter according to claim 1, characterized in that, The outer circumferential surface of the protruding post is provided with a groove that is adapted to the insulating spacer.

5. The piezoelectric transmitter according to claim 1, 2, 3 or 4, characterized in that, The insulating spacer is provided with an opening; The flexible circuit board is adapted to the insulating spacer.

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