Isolation shear type piezoelectric acceleration sensor

Abstract

The utility model discloses an isolation shear type piezoelectric acceleration sensor, which belongs to the technical field of sensors and comprises a shell and a cover plate, a magnet is fixedly mounted on the side wall of the cover plate, and a splicing assembly is arranged on the inner wall of the shell. According to the utility model, through the arrangement of the splicing assembly, as one end of the limiting rod and one end of the clamping rod are inclined, as one end of the limiting rod extrudes the clamping rod, after one end of the clamping rod is aligned with the clamping port, the clamping rod is inserted into the clamping port under the action of the fixing spring, so that the cover plate and the shell are spliced together; when the sensor needs to be disassembled, the shifting block drives the connecting rod to move in the stroke groove, so that the sliding block moves, the sliding block drives the clamping rod to move downwards and be separated from the clamping opening of the limiting rod, then the cover plate and the shell are separated, the installation structure and steps of the sensor are simplified, disassembly and assembly of the sensor are improved, and then the production efficiency of the sensor is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sensor technical field especially relates to a kind of isolated shear piezoelectric acceleration sensor. BACKGROUND

[0002] Acceleration sensor is a kind of sensor that can measure acceleration, usually by mass, damper, elastic element, sensitive element and adaptive circuit etc. parts, sensor in acceleration process, by the measurement of inertia force that mass is subjected to, acceleration value is obtained using Newton's second law. According to the different sensor sensitive element, common acceleration sensor includes capacitive, inductive, strain, piezoresistive, piezoelectric, etc., shear piezoelectric acceleration sensor is in the mode of shear, realizes that vibration sensor is insulated to the sensor of ground.

[0003] Current sensor is mostly fixed by bolt when assembling, it is more cumbersome to operate when disassembling and overhauling in later period, and when bolt rusts, it will increase the difficulty of disassembly, therefore a kind of isolated shear piezoelectric acceleration sensor is provided. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the problem of difficult disassembly of current sensor in later period, and a kind of isolated shear piezoelectric acceleration sensor is provided.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of isolated shear piezoelectric acceleration sensor, including shell and cover plate, the sidewall of the cover plate is fixedly installed with magnet, the inner wall of the shell is provided with splicing assembly;

[0006] The splicing assembly includes stroke slot and limiting rod, the two side walls of the shell are provided with stroke slot, the inner wall of the stroke slot is slidably installed with connecting rod, one end of connecting rod extends to the outside of shell and is fixedly installed with knob, the other end of connecting rod extends to the inside of shell and is fixedly installed with sliding block.

[0007] As a further description of the above technical scheme:

[0008] The lower surface of the sliding block is fixedly installed with fixed spring, one end of the fixed spring is fixedly installed with fixed block.

[0009] As a further description of the above technical scheme:

[0010] The sidewall of the fixed block is fixedly connected with the inner sidewall of the shell, and the inner wall of the sliding block is fixedly installed with clamping rod.

[0011] As a further description of the above technical scheme:

[0012] One end of the clamping rod is inserted into the interior of the fixed spring and extends to the lower surface of the fixed block, and the other end of the clamping rod extends to the upper surface of the sliding block.

[0013] As a further description of the above technical solution:

[0014] One end of the limiting rod is fixedly connected with the side wall of the cover plate, and a clamping hole is arranged on the inner wall of the limiting rod.

[0015] As a further description of the above technical solution:

[0016] The limiting rod and one end of the clamping rod are both arranged in an inclined shape, and a magnet is fixedly installed on the side wall of the cover plate.

[0017] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0018] 1. In the present application, the mass block, the damper, the elastic element, the sensitive element and the adaptive circuit are assembled into the interior of the shell through the setting of the splicing assembly, and then the cover plate is aligned with the shell to combine the two, at this time, the limiting rod moves into the interior of the shell, and since the limiting rod and one end of the clamping rod are both arranged in an inclined shape, one end of the limiting rod will extrude the clamping rod, and when one end of the clamping rod is aligned with the clamping hole, the clamping rod will be inserted into the clamping hole under the action of the fixed spring, thereby splicing the cover plate and the shell, when it is necessary to disassemble, the connecting rod is moved in the stroke groove by the driving of the push block, thereby moving the sliding block, the sliding block drives the clamping rod to move downward, and the clamping rod is separated from the clamping hole of the limiting rod, and then the cover plate and the shell are separated, which simplifies the installation structure and steps of the sensor, improves the disassembly and installation of the sensor, and further improves the production efficiency of the sensor.

[0019] 2. In the present application, the magnet is arranged, the sensor is magnetically attracted to the measured object by the magnet, thereby fixing the sensor on the measured object, which is simple in structure and facilitates the installation of the sensor on the measured object, and improves the use efficiency of the sensor. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective structural schematic view of an isolated shear type piezoelectric acceleration sensor.

[0021] Figure 2 It is an exploded structural schematic view of the shell and the cover plate in an isolated shear type piezoelectric acceleration sensor.

[0022] Figure 3 It is a limiting rod in an isolated shear type piezoelectric acceleration sensor. Figure 3 It is an enlarged structural schematic view of A in the middle.

[0023] LEGEND:

[0024] 1, shell; 2, cover plate; 3, magnet; 4, splicing assembly; 41, dial block; 42, stroke groove; 43, limiting rod; 44, clamping interface; 45, fixed block; 46, fixed spring; 47, sliding block; 48, clamping rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] Please refer to Figures 1-3 The present application provides a technical solution: an isolated shear type piezoelectric acceleration sensor, comprising a shell 1 and a cover plate 2, the side wall of the cover plate 2 is fixedly installed with a magnet 3, the inner wall of the shell 1 is provided with a splicing assembly 4;

[0027] The splicing assembly 4 includes a stroke groove 42 and a limiting rod 43, the two side walls of the shell 1 are provided with a stroke groove 42, the inner wall of the stroke groove 42 is slidably installed with a connecting rod, one end of the connecting rod extends to the outside of the shell 1 and is fixedly installed with a dial block 41, the other end of the connecting rod extends to the inside of the shell 1 and is fixedly installed with a sliding block 47, the lower surface of the sliding block 47 is fixedly installed with a fixed spring 46, one end of the fixed spring 46 is fixedly installed with a fixed block 45, the side wall of the fixed block 45 is fixedly connected with the inner side wall of the shell 1, the inner wall of the sliding block 47 is fixedly installed with a clamping rod 48, one end of the clamping rod 48 penetrates into the inside of the fixed spring 46 and extends to the lower surface outside of the fixed block 45, the other end of the clamping rod 48 extends to the upper surface outside of the sliding block 47, one end of the limiting rod 43 is fixedly connected with the side wall of the cover plate 2, the inner wall of the limiting rod 43 is provided with a clamping interface 44.

[0028] The specific implementation is that the mass block, damper, elastic element, sensitive element and adaptive circuit are assembled into the inside of the shell 1, then the cover plate 2 is aligned with the shell 1 and the two are combined, at this time the limiting rod 43 moves to the inside of the shell 1, because the limiting rod 43 and the one end of the clamping rod 48 are both arranged in an inclined shape, therefore the one end of the limiting rod 43 will extrude the clamping rod 48, when the one end of the clamping rod 48 is aligned with the clamping port 44, the clamping rod 48 is inserted into the clamping port 44 under the action of the fixing spring 46, thereby the cover plate 2 and the shell 1 are spliced, when disassembling, the knob 41 drives the connecting rod to move in the stroke groove 42, thereby the sliding block 47 moves, the sliding block 47 drives the clamping rod 48 to move downward, the clamping rod 48 is separated from the clamping port 44 of the limiting rod 43, then the cover plate 2 and the shell 1 are separated.

[0029] The one end of the limiting rod 43 and the clamping rod 48 are both arranged in an inclined shape, and the sidewall of the cover plate 2 is fixedly installed with the magnet 3.

[0030] The specific implementation is that when the sensor is needed, the sensor is magnetically attracted to the measured object by the magnet 3, thereby the sensor is fixed to the measured object.

[0031] The working principle is that the mass block, damper, elastic element, sensitive element and adaptive circuit are assembled into the inside of the shell 1, then the cover plate 2 is aligned with the shell 1 and the two are combined, at this time the limiting rod 43 moves to the inside of the shell 1, because the limiting rod 43 and the one end of the clamping rod 48 are both arranged in an inclined shape, therefore the one end of the limiting rod 43 will extrude the clamping rod 48, when the one end of the clamping rod 48 is aligned with the clamping port 44, the clamping rod 48 is inserted into the clamping port 44 under the action of the fixing spring 46, thereby the cover plate 2 and the shell 1 are spliced, when disassembling, the knob 41 drives the connecting rod to move in the stroke groove 42, thereby the sliding block 47 moves, the sliding block 47 drives the clamping rod 48 to move downward, the clamping rod 48 is separated from the clamping port 44 of the limiting rod 43, then the cover plate 2 and the shell 1 are separated, when the sensor is needed, the sensor is magnetically attracted to the measured object by the magnet 3, thereby the sensor is fixed to the measured object.

[0032] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An isolated shear mode piezoelectric acceleration sensor comprising a housing (1) and a cover plate (2), characterized in that: The side wall of the cover plate (2) is fixedly provided with a magnet (3), and the inner wall of the shell (1) is provided with a splicing assembly (4); The splicing assembly (4) comprises a stroke slot (42) and a limiting rod (43), the two side walls of the shell (1) are both provided with the stroke slot (42), the inner wall of the stroke slot (42) is slidably provided with a connecting rod, one end of the connecting rod extends to the outside of the shell (1) and is fixedly provided with a knob (41), and the other end of the connecting rod extends to the inside of the shell (1) and is fixedly provided with a sliding block (47).

2. The isolated shear mode piezoelectric acceleration sensor according to claim 1, wherein The lower surface of the sliding block (47) is fixedly provided with a fixed spring (46), and one end of the fixed spring (46) is fixedly provided with a fixed block (45).

3. The isolated shear mode piezoelectric acceleration sensor according to claim 2, wherein The side wall of the fixed block (45) is fixedly connected with the inner wall of the shell (1), and the inner wall of the sliding block (47) is fixedly provided with a clamping rod (48).

4. The isolated shear mode piezoelectric acceleration sensor according to claim 3, wherein One end of the clamping rod (48) penetrates into the fixed spring (46) and extends to the lower surface of the fixed block (45), and the other end of the clamping rod (48) extends to the upper surface of the sliding block (47).

5. The isolated shear mode piezoelectric acceleration sensor according to claim 4, wherein One end of the limiting rod (43) is fixedly connected with the side wall of the cover plate (2), and the inner wall of the limiting rod (43) is provided with a clamping port (44).

6. The isolated shear mode piezoelectric acceleration sensor according to claim 5, wherein One end of the limiting rod (43) and the clamping rod (48) are both provided in an inclined shape, and the side wall of the cover plate (2) is fixedly provided with a magnet (3).

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