Insulation structure of vibration sensor

Abstract

The utility model discloses an insulation structure of a vibration sensor, which relates to the technical field of vibration sensors and comprises a sensor shell and a piezoelectric wafer, the piezoelectric wafer is fixedly mounted inside one end of the sensor shell, and an electrical interface is arranged at one end, far away from the piezoelectric wafer, of the sensor shell. A stepped groove is formed in the inner wall of the side, close to the piezoelectric wafer, of the sensor shell, an insulating lining abuts against the side, close to the piezoelectric wafer, of the stepped groove, the other side of the insulating lining abuts against one side of the piezoelectric wafer, and supporting pieces are arranged on the inner walls of the two sides of the insulating lining correspondingly. And a limiting mechanism for limiting the movement of the supporting piece is arranged on the inner wall of the insulating lining. According to the utility model, the lining structure of the vibration sensor can be made of an insulating material with better machining performance, the difficulty of processing and assembling processes is reduced, and the internal structure of the vibration sensor is simplified, so that the reliability is improved while the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration sensors, in particular to an insulation structure of a vibration sensor. Background Art

[0002] It has the characteristics of small size, fast response speed, large measurement range and low power consumption, and has been increasingly widely used in the fields of real-time measurement and control of engines, fluid pipelines, roads and bridges. Due to the limitations of size and structure, existing piezoelectric vibration sensors are generally locally insulated at the position where the positive and negative poles are closest to each other on the structural parts. This greatly increases the difficulty of the insulation structure process of the piezoelectric vibration sensor, makes the structure more complex, and reduces reliability. Utility Model Content

[0003] In view of the problems existing in the insulation structure of the above-mentioned existing vibration sensor, the present utility model is proposed.

[0004] Therefore, the purpose of the present utility model is to provide an insulating structure of a vibration sensor, which solves the problem that the insulating structure of the vibration sensor in the prior art is generally locally insulated at the position where the positive and negative poles are closest to each other on the structural member, which greatly increases the difficulty of the insulating structure process of the piezoelectric vibration sensor, makes the structure more complex, and reduces the reliability.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] An insulating structure for a vibration sensor includes a sensor housing and a piezoelectric chip, wherein the piezoelectric chip is fixedly mounted inside one end of the sensor housing, an electrical interface is provided at the end of the sensor housing away from the piezoelectric chip, a stepped groove is provided on the inner wall of the sensor housing on the side close to the piezoelectric chip, an insulating lining is provided on the side of the stepped groove close to the piezoelectric chip, the other side of the insulating lining is in contact with one side of the piezoelectric chip, support members are provided on the inner walls on both sides of the insulating lining, and a limiting mechanism is provided on the inner wall of the insulating lining for limiting the movement of the support members.

[0007] Preferably, the limiting mechanism includes a connecting rod and a movable block, the connecting rod is fixedly arranged on the middle inner wall of the insulating lining, a socket is provided on one side of the support member and at a position corresponding to the connecting rod, the connecting rod is plugged into the socket, a card slot is provided on the side of the socket away from the insulating lining, the movable block is clamped in the inside of the card slot, a sliding groove is provided at one end of the connecting rod close to the movable block, a sliding rod is fixedly arranged inside the sliding groove, a slider is movably sleeved on the rod wall of the sliding rod, and one side of the slider is fixedly connected to the movable block.

[0008] Preferably, the internal threaded sleeve of the movable block is provided with a threaded rod, a side wall at one end of the sliding rod is provided with a limiting hole, and one end of the threaded rod is plugged into the limiting hole.

[0009] Preferably, the longitudinal sections of the connecting rod and the socket are both rectangular.

[0010] Preferably, the cross sections of the slider and the slide groove are both rectangular.

[0011] Preferably, the sensor housing is a metal structure, and the sensor housing is electrically connected to the negative pole of the electrical interface.

[0012] Preferably, the negative electrode of the piezoelectric chip is electrically connected to the sensor housing.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. The utility model adopts an insulating material with good machining performance to manufacture the lining structure of the vibration sensor, thereby reducing the difficulty of the processing and assembly process and simplifying the internal structure of the vibration sensor, thereby reducing costs and improving reliability.

[0015] 2. The present invention can ensure the strength and stability of the insulating lining by providing a support member on the inner wall of the insulating lining, and prevent the insulating lining from loosening or being damaged due to vibration as much as possible.

[0016] 3. The utility model can separate the support member from the insulating lining by pulling the movable block upward so that the movable block is flush with the connecting rod, making it convenient to replace the damaged insulating lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 This is a structural schematic diagram of an insulation structure of a vibration sensor proposed in the present utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the partial A in the middle part;

[0020] Figure 3 for Figure 2 A three-dimensional diagram of the connection structure between the connecting rod and the movable block.

[0021] Description of reference numerals:

[0022] 1. Sensor housing; 2. Electrical interface; 3. Insulation lining; 4. Support; 5. Piezoelectric chip; 6. Slide rod; 7. Slider; 8. Movable block; 9. Threaded rod; 10. Connecting rod. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The embodiment of the utility model discloses an insulation structure of a vibration sensor.

[0025] Reference Figure 1-3 An insulating structure of a vibration sensor includes a sensor housing 1 and a piezoelectric chip 5. The piezoelectric chip 5 is fixedly installed inside one end of the sensor housing 1. An electrical interface 2 is provided at the end of the sensor housing 1 away from the piezoelectric chip 5. A stepped groove is provided on the inner wall of the sensor housing 1 on the side close to the piezoelectric chip 5. An insulating lining 3 is provided on the side of the stepped groove close to the piezoelectric chip 5. The other side of the insulating lining 3 is in contact with one side of the piezoelectric chip 5. Support members 4 are provided on the inner walls of both sides of the insulating lining 3. The sensor housing 1 is a metal structure. The sensor housing 1 is electrically connected to the negative pole of the electrical interface 2, and the negative pole of the piezoelectric chip 5 is electrically connected to the sensor housing 1.

[0026] Reference Figure 1-3 The inner wall of the insulating lining 3 is provided with a limiting mechanism for limiting the movement of the support member 4. The limiting mechanism includes a connecting rod 10 and a movable block 8. The connecting rod 10 is fixedly arranged on the inner wall of the middle end of the insulating lining 3. A socket is provided on one side of the support member 4 and corresponding to the connecting rod 10. The connecting rod 10 is plugged into the socket, and a slot is provided on the side of the socket away from the insulating lining 3 to engage the movable block 8. A sliding groove is provided inside the sliding groove, and a sliding rod 6 is fixedly arranged on the inner wall of the sliding rod 6. A slider 7 is movably sleeved on the rod wall of the sliding rod 6. One side of the slider 7 is fixedly connected to the movable block 8. The cross sections of the slider 7 and the sliding groove are both rectangular, so that the slider 7 cannot rotate, that is, it can slide stably. The longitudinal sections of the connecting rod 10 and the socket are both rectangular, so that the support member 4 cannot rotate, that is, it can be stably connected to the insulating lining 3. The internal threaded sleeve of the movable block 8 is provided with a threaded rod 9, and a limiting hole is provided on one end side wall of the sliding rod 6. One end of the threaded rod 9 is plugged into the limiting hole, which is convenient for limiting the movable block 8.

[0027] In the present invention, during use, since the lining structure of the vibration sensor (i.e., the insulating lining 3) is manufactured by using insulating materials with good machining performance, the difficulty of the processing and assembly process is reduced, and the internal structure of the vibration sensor is simplified, thereby reducing costs and improving reliability. Since the support member 4 is provided on the inner wall of the insulating lining 3, the strength and stability of the insulating lining 3 can be guaranteed, and the insulating lining 3 can be prevented from loosening or being damaged due to vibration as much as possible. When the insulating lining is damaged, the movable block 8 is pulled upward so that the movable block 8 is flush with the connecting rod 10, that is, the support member 4 can be separated from the insulating lining 3, and the damaged insulating lining 3 can be replaced conveniently.

[0028] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An insulating structure of a vibration sensor, comprising a sensor housing (1) and a piezoelectric chip (5), characterized in that: The piezoelectric chip (5) is fixedly mounted inside one end of the sensor housing (1); an electrical interface (2) is provided at one end of the sensor housing (1) away from the piezoelectric chip (5); a stepped groove is provided on the inner wall of the sensor housing (1) on the side close to the piezoelectric chip (5); an insulating lining (3) is provided on the side of the stepped groove close to the piezoelectric chip (5); the other side of the insulating lining (3) contacts one side of the piezoelectric chip (5); support members (4) are provided on the inner walls of both sides of the insulating lining (3); and a limiting mechanism for limiting the movement of the support member (4) is provided on the inner wall of the insulating lining (3).

2. The insulation structure of the vibration sensor according to claim 1, characterized in that: The limiting mechanism includes a connecting rod (10) and a movable block (8), wherein the connecting rod (10) is fixedly arranged on the middle inner wall of the insulating lining (3), a socket is provided on one side of the support member (4) and at a position corresponding to the connecting rod (10), the connecting rod (10) is plugged into the socket, a slot is provided on the side of the socket away from the insulating lining (3), the movable block (8) is engaged with the inside of the slot, a sliding groove is provided on one end of the connecting rod (10) close to the movable block (8), a sliding rod (6) is fixedly arranged inside the sliding groove, a slider (7) is movably sleeved on the rod wall of the sliding rod (6), and one side of the slider (7) is fixedly connected to the movable block (8).

3. The insulation structure of the vibration sensor according to claim 2, characterized in that: The internal threaded sleeve of the movable block (8) is provided with a threaded rod (9), a limiting hole is provided on the side wall of one end of the sliding rod (6), and one end of the threaded rod (9) is plugged into the limiting hole.

4. The insulation structure of the vibration sensor according to claim 2, characterized in that: The longitudinal sections of the connecting rod (10) and the socket are both rectangular.

5. The insulation structure of the vibration sensor according to claim 2, characterized in that: The cross sections of the slider (7) and the slide groove are both rectangular.

6. The insulation structure of the vibration sensor according to claim 1, characterized in that: The sensor housing (1) is a metal structure, and the sensor housing (1) is electrically connected to the negative pole of the electrical interface (2).

7. The insulation structure of the vibration sensor according to claim 1, characterized in that: The negative electrode of the piezoelectric chip (5) is electrically connected to the sensor housing (1).

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