An ultrasonic sensor

Abstract

The utility model discloses an ultrasonic sensor, including a shell, a magnetic adsorption base and an ultrasonic sensor assembly, wherein the magnetic adsorption base is provided with a plurality of magnetic adsorption grooves evenly distributed along its circumferential direction, wherein a magnet is provided in the magnetic adsorption groove, and an air bag is provided at the bottom of the magnet, wherein the air bag is connected with an air pipe, and one end of the air pipe extends to the outside of the shell and is connected with an inflatable air bag and an exhaust valve. The utility model aims to solve the technical problems existing in the prior art, and provides an ultrasonic sensor, which can push up the magnet by filling the air bag with gas to expand it, so that the operator can remove the ultrasonic sensor more easily.

Description

Technical Field

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

[0002] In the prior art, ultrasonic sensors are widely used in the electrical field, mainly used for partial discharge detection, such as in transformers or switch cabinets. In order to increase the convenience of installation of ultrasonic sensors, magnetic adsorption sensors have been developed in the prior art. However, the existing magnetic adsorption sensors are inconvenient to disassemble due to the large magnetic attraction force. Utility Model Content

[0003] The utility model aims to solve the technical problems existing in the prior art and provides an ultrasonic sensor which can expand the airbag by filling gas into the airbag so as to lift up the magnet, making it easier for operators to remove the ultrasonic sensor.

[0004] 2. Technical solution

[0005] In order to solve the above problems, the technical solution provided by the utility model is:

[0006] An ultrasonic sensor comprises a shell, a magnetic adsorption base and an ultrasonic sensor assembly, wherein the magnetic adsorption base is uniformly provided with a plurality of magnetic adsorption grooves along its circumferential direction, a magnet is provided in the magnetic adsorption groove, an air bag is provided at the bottom of the magnet, the air bag is connected to an air pipe, one end of the air pipe extends to the outside of the shell and is connected to an inflatable air bag and an exhaust valve.

[0007] Optionally, two air bags are provided at the bottom of the magnet, and are respectively provided on two sides of the magnet.

[0008] Optionally, a support plate is provided at the bottom of the magnet, and the support plate is provided between the magnet and the airbag.

[0009] Optionally, the air tubes of several airbags on the same side are connected to the same inflatable airbag.

[0010] Optionally, a flexible plate is provided on the top of the magnet.

[0011] Optionally, the acoustic wave sensor assembly includes a fixed cover, an ultrasonic sensor body and a spring, one end of the ultrasonic sensor body is movably connected to the fixed cover, and the spring is arranged in the fixed cover and is used to push the ultrasonic sensor body outward.

[0012] Optionally, a first limiting ring is provided on the outer wall of the ultrasonic sensor body, and a second limiting ring cooperating with the first limiting ring is provided on the inner wall of the fixing cover.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] When the ultrasonic sensor needs to be disassembled, gas can be filled into the airbag to expand it, thereby lifting the magnet. At this time, the distance between the magnet and the surface of the device increases, and the magnetic attraction becomes weaker. The operator can easily remove the ultrasonic sensor. When it is adsorbed again, the gas inside the airbag can be exhausted first. The operation is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an ultrasonic sensor proposed in an embodiment of the utility model;

[0017] Figure 2 A cross-sectional schematic diagram of an ultrasonic sensor assembly in an ultrasonic sensor proposed in an embodiment of the utility model;

[0018] Figure 3 for Figure 1 The local schematic diagram of the A in the middle;

[0019] 1. Shell; 2. Magnetic adsorption base; 3. Ultrasonic sensor assembly; 31. Fixed cover; 32. Ultrasonic sensor body; 33. Spring; 34. First limiting ring; 35. Second limiting ring; 4. Magnetic adsorption groove; 5. Magnet; 6. Airbag; 7. Air pipe; 8. Inflatable airbag; 9. Support plate; 10. Flexible plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and do not limit the protection scope of the utility model.

[0021] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. Further, when an element is considered to be "fixedly connected to" another element, the two may be fixed in a detachable connection manner or in a non-detachable connection manner, such as socketing, snap-on, one-piece fixation, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] The “first” and “second” involved in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0024] Combined with Figure 1-3 An ultrasonic sensor of the present embodiment includes a shell 1, a magnetic adsorption base 2 and an ultrasonic sensor assembly 3, the ultrasonic sensor assembly 3 is connected to the center of the magnetic adsorption base 2, the magnetic adsorption base 2 is connected to the shell 1, a plurality of magnetic adsorption grooves 4 are evenly distributed along the circumferential direction of the magnetic adsorption base 2, the magnetic adsorption groove 4 is a hollow cavity inside the magnetic adsorption base 2, two adjacent magnetic adsorption grooves 4 are not connected to each other, a magnet 5 is arranged in the magnetic adsorption groove 4, the thickness of the magnet 5 is lower than the height of the magnetic adsorption groove 4, an airbag 6 is arranged at the bottom of the magnet 5, the airbag 6 is connected to an air pipe 7, one end of the air pipe 7 extends to the outside of the shell 1 and is connected to an inflatable airbag 8 and an exhaust valve.

[0025] When the ultrasonic sensor needs to be disassembled, gas can be filled into the airbag 6 to expand it, thereby lifting the magnet 5. At this time, the distance between the magnet 5 and the surface of the device increases, and the magnetic attraction becomes weaker. The operator can easily remove the ultrasonic sensor. When it is adsorbed again, the gas inside the airbag 6 can be exhausted first, which is very convenient to operate.

[0026] As a preferred solution of the utility model, two airbags 6 are provided at the bottom of the magnet 5, and are respectively provided on both sides of the magnet 5. When the magnet 5 is lifted up by the airbags 6, one side of the magnet 5 is lifted up, and then the other side of the magnet 5 is lifted up. This is more labor-saving than lifting the magnet 5 upward as a whole, thereby reducing the requirements for the airbags 6 and making it easier for the user to press the airbags 6.

[0027] As a preferred solution of the utility model, a support plate 9 is provided at the bottom of the magnet 5. The support plate 9 is a hard iron plate. The support plate 9 is arranged between the magnet 5 and the airbag 6. The support plate 9 has a high hardness. When the airbag 6 lifts up the two sides of the magnet 5 one after another, it is not easy to break the magnet 5 and affect the magnetic attraction effect.

[0028] As a preferred solution of the utility model, the air tubes 7 of several airbags 6 on the same side are connected to the same inflatable airbag 8. Taking this embodiment as an example, several airbags 6 close to the center of the magnetic adsorption base 2 share the same inflatable airbag 8, and several airbags 6 far from the center of the magnetic adsorption base 2 share the same inflatable airbag 8. This allows the user to completely lift all the magnets 5 with two operations, which is more convenient to operate.

[0029] As a preferred embodiment of the present invention, a flexible plate 10 is provided on the top of the magnet 5. The material of the flexible plate 10 is rubber, silicone or other soft porous materials. The main purpose is to prevent the magnet 5 from breaking due to frequent collisions with the magnetic suction groove 4. The flexible plate 10 plays a buffering role.

[0030] As a preferred embodiment of the utility model, the acoustic wave sensor assembly 3 includes a fixed cover 31, an ultrasonic sensor body 32 and a spring 33. The lower end of the fixed cover 31 is open as an inlet and outlet of the ultrasonic sensor body 32. One end of the ultrasonic sensor body 32 is movably connected to the fixed cover 31. The spring 33 is arranged in the fixed cover 31 and is used to push the ultrasonic sensor body 32 outward, so that the ultrasonic sensor body 32 is in close contact with the device casing and will not cause major damage to the device casing.

[0031] As a preferred solution of the utility model, a first limiting ring 34 is provided on the outer wall of the ultrasonic sensor body 32, and a second limiting ring 35 cooperating with the first limiting ring 34 is provided on the inner wall of the fixed cover 31. The second limiting ring 35 is arranged below the first limiting ring 34. The first limiting ring 34 and the second limiting ring 35 cooperate to prevent the ultrasonic sensor body 32 from being completely pushed out of the fixed cover 31, thereby ensuring that one end of the ultrasonic sensor body 32 is always located in the fixed cover 31.

[0032] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An ultrasonic sensor, characterized in that: It includes a shell, a magnetic adsorption base and an ultrasonic sensor assembly. The magnetic adsorption base is evenly distributed with a plurality of magnetic adsorption grooves along its circumferential direction. A magnet is arranged in the magnetic adsorption groove. An air bag is arranged at the bottom of the magnet. The air bag is connected with an air pipe. One end of the air pipe extends to the outside of the shell and is connected with an inflatable air bag and an exhaust valve.

2. An ultrasonic sensor according to claim 1, characterized in that: Two air bags are arranged at the bottom of the magnet and are respectively arranged at two sides of the magnet.

3. An ultrasonic sensor according to claim 2, characterized in that: A support plate is provided at the bottom of the magnet, and the support plate is provided between the magnet and the airbag.

4. An ultrasonic sensor according to claim 2, characterized in that: The air tubes of a plurality of the air bags on the same side are connected to the same inflatable air bag.

5. An ultrasonic sensor according to any one of claims 1 to 4, characterized in that: A flexible plate is provided on the top of the magnet.

6. An ultrasonic sensor according to claim 5, characterized in that: The acoustic wave sensor assembly comprises a fixed cover, an ultrasonic sensor body and a spring. One end of the ultrasonic sensor body is movably connected in the fixed cover. The spring is arranged in the fixed cover and is used to push the ultrasonic sensor body outward.

7. An ultrasonic sensor according to claim 6, characterized in that: A first limiting ring is arranged on the outer wall of the ultrasonic sensor body, and a second limiting ring cooperating with the first limiting ring is arranged on the inner wall of the fixing cover.

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