Gas sensor convenient to install

Abstract

The utility model discloses a gas sensor convenient to install, which belongs to the technical field of gas sensors and comprises a sensor main body, an installation seat, a circuit board and an interface, the installation seat is arranged at the lower end of the sensor main body and installed on the circuit board, and the interface is welded on the edge of the circuit board; round holes are formed in the four corners of the end face of the circuit board, fixing sleeves are inserted into the round holes, fastening bolts are connected into the fixing sleeves in an inserted mode, inner cavities of the fixing sleeves are threaded bins, annular holes are formed in the lower ends of the threaded bins, and elastic extrusion pieces are installed in the annular holes. According to the gas sensor convenient to install, the fixing sleeve is installed on the circuit board of the sensor, the fastening piece is arranged at the opening of the lower end of the fixing sleeve, the fastening bolt is inserted into the opening of the upper end of the fixing sleeve, and the fastening piece is expanded outwards by screwing the fastening bolt downwards; and the elastic extrusion sheets are extruded by the fastening bolts to extrude the arc-shaped strips to clamp the to-be-connected equipment, so that the firmness of the mounting position is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sensors, in particular to a gas sensor which is easy to install. Background Art

[0002] A gas sensor is a converter that converts the volume fraction of a certain gas into a corresponding electrical signal. With the continuous improvement of people's living standards and the increasing attention to environmental protection, the detection of various toxic and harmful gases, the monitoring of air pollution and industrial waste gas, and the detection of food and living environment quality have put forward higher requirements for gas sensors. The successful application of new material development technologies such as nano and thin film technology has provided a good prerequisite for the integration and intelligence of gas sensors. Gas sensors will be developed on the basis of making full use of multidisciplinary comprehensive technologies such as micromechanical and microelectronics technology, computer technology, signal processing technology, sensor technology, fault diagnosis technology, and intelligent technology. The development of fully automatic digital intelligent gas sensors that can monitor multiple gases at the same time will be an important research direction in this field.

[0003] The main body of the gas sensor is mounted on a circuit board, which is then fixed to its corresponding device by bolts. When there is a gap at the upper end of the round tube connected to it and the device cannot be replaced, the firmness of the bolt connection decreases. To address this problem, the present application proposes a method of using fasteners to achieve a fastening connection at the connection point, thereby effectively improving the firmness of the installation. Utility Model Content

[0004] The main purpose of the utility model is to provide a gas sensor that is easy to install and can effectively solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A gas sensor that is easy to install includes a sensor body, a mounting seat, a circuit board and an interface, wherein the mounting seat is placed at the lower end of the sensor body, the mounting seat is installed on the circuit board, and the interface is welded to the edge of the circuit board; circular holes are provided at the four corners of the end face of the circuit board, a fixing sleeve is inserted into the circular hole, a fastening bolt is inserted and connected into the fixing sleeve, and the inner cavity of the fixing sleeve is a threaded bin, an annular hole is provided at the lower end of the threaded bin, and an elastic extrusion sheet is installed in the hole of the annular hole, the lower end of the elastic extrusion sheet is an arc portion, and an extrusion arc strip is provided on the outer side of the arc portion.

[0007] In a further preferred embodiment of the present application, the elastic extrusion sheet, the arc-shaped portion and the extrusion arc-shaped strip are designed as one body, and the elastic extrusion sheet is welded to the fixed sleeve;

[0008] In a further preferred embodiment of the present application, the elastic extruded sheet, the arc-shaped portion and the extruded arc-shaped strip together constitute a fastener, and a plurality of fasteners are distributed in an annular array;

[0009] In a further preferred embodiment of the present application, the inner wall of the elastic extrusion sheet is designed to be arc-shaped, the inner wall of the elastic extrusion sheet is convexly arranged, and the fastening bolts squeeze the elastic extrusion sheet outwards;

[0010] In a further preferred embodiment of the present application, the elastic extrusion sheet is subjected to external extrusion so that the elastic extrusion sheet is closely attached to the inner wall of the annular hole;

[0011] According to a further preferred embodiment of the present application, the arc-shaped portion, the elastic extrusion sheet and the extruded arc-shaped strip are designed as a whole in a "J" shape.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In the utility model, a fixing sleeve is installed on the circuit board of the sensor, a fastener is provided at the lower opening of the fixing sleeve, a fastening bolt is inserted into the upper opening of the fixing sleeve, the fastening bolt is screwed downward to expand the fastener outward, and the elastic extrusion sheet is squeezed by the fastening bolt to extrude the arc-shaped bar column to connect the equipment to be connected, thereby enhancing the firmness of the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial structural display diagram of the utility model;

[0016] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0017] In the figure: 1. sensor body; 2. mounting base; 3. circuit board; 4. interface; 5. fixing sleeve; 6. fastening bolt; 7. threaded bin; 8. elastic extrusion sheet; 9. arc portion; 10. extruded arc strip; 11. annular hole. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1 - Figure 3As shown, a gas sensor that is easy to install includes a sensor body 1, a mounting base 2, a circuit board 3 and an interface 4. The mounting base 2 is placed at the lower end of the sensor body 1, the mounting base 2 is installed on the circuit board 3, and the interface 4 is welded to the edge of the circuit board 3; circular holes are opened at the four corners of the end surface of the circuit board 3, and a fixing sleeve 5 is inserted into the circular hole. A fastening bolt 6 is inserted and connected in the fixing sleeve 5. The inner cavity of the fixing sleeve 5 is a threaded bin 7. The lower end of the threaded bin 7 is opened with an annular hole 11, and an elastic extrusion sheet is installed in the hole of the annular hole 11 8, the lower end of the elastic extrusion piece 8 is an arc-shaped portion 9, and an extrusion arc-shaped strip 10 is provided on the outer side of the arc-shaped portion 9; when in use, the circuit board 3 at the lower end of the sensor body 1 is placed at the installation position of the corresponding device housing, the fixing sleeve 5 is released from the round tube of the corresponding device housing, and the fastening bolt 6 is inserted into the fixing sleeve 5. During the process of screwing down the fastening bolt 6, the elastic extrusion piece 8 is driven to expand outward, thereby realizing the outward expansion of the extrusion arc-shaped strip 10, so that the extrusion arc-shaped strip 10 is tightly attached to the inner wall of the round tube of the corresponding device housing, thereby realizing a firm connection there.

[0020] The elastic extrusion sheet 8, the arc portion 9 and the extrusion arc strip 10 are designed as an integrated whole, and the elastic extrusion sheet 8 is welded to the fixed sleeve 5; the elastic extrusion sheet 8, the arc portion 9 and the extrusion arc strip 10 together constitute a fastener, and a plurality of fasteners are distributed in an array ring; the inner wall of the elastic extrusion sheet 8 is designed in an arc shape, and the inner wall of the elastic extrusion sheet 8 is convexly arranged, and the fastening bolt 6 squeezes the elastic extrusion sheet 8 outward; the elastic extrusion sheet 8 is squeezed outward so that the elastic extrusion sheet 8 is tightly attached to the inner wall of the annular hole 11; the arc portion 9, the elastic extrusion sheet 8 and the extrusion arc strip 10 are designed in a "J" shape as a whole; during assembly, the fasteners composed of the elastic extrusion sheet 8, the arc portion 9 and the extrusion arc strip 10 are installed one by one at the annular hole 11, and the fasteners and the fixed sleeve 5 are fixed by welding, and then the fixed sleeve 5 is fixed in the four corner circular holes of the circuit board 3.

[0021] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas sensor that is easy to install, comprising a sensor body (1), a mounting seat (2), a circuit board (3) and an interface (4), wherein the mounting seat (2) is placed at the lower end of the sensor body (1), the mounting seat (2) is mounted on the circuit board (3), and the interface (4) is welded on the edge of the circuit board (3), characterized in that: The four corners of the end surface of the circuit board (3) are provided with circular holes, into which a fixing sleeve (5) is inserted, into which a fastening bolt (6) is inserted and connected, and the inner cavity of the fixing sleeve (5) is a threaded bin (7), the lower end of the threaded bin (7) is provided with an annular hole (11), and an elastic extrusion sheet (8) is installed in the hole of the annular hole (11), the lower end of the elastic extrusion sheet (8) is an arc portion (9), and an extrusion arc strip (10) is provided on the outer side of the arc portion (9).

2. The gas sensor that is easy to install according to claim 1, characterized in that: The elastic extrusion sheet (8), the arc-shaped portion (9) and the extrusion arc-shaped strip (10) are designed as one piece, and the elastic extrusion sheet (8) is welded to the fixed sleeve (5).

3. The gas sensor that is easy to install according to claim 2, characterized in that: The elastic extruded sheet (8), the arc-shaped portion (9) and the extruded arc-shaped strip (10) together form a fastener, and a plurality of fasteners are distributed in an annular array.

4. The gas sensor that is easy to install according to claim 1, characterized in that: The inner wall of the elastic extrusion sheet (8) is designed to be arc-shaped, and the inner wall of the elastic extrusion sheet (8) is arranged to be protruding, and the fastening bolt (6) presses the elastic extrusion sheet (8) outward.

5. The gas sensor that is easy to install according to claim 4, characterized in that: The elastic extrusion sheet (8) is pressed from outside so that the elastic extrusion sheet (8) is tightly attached to the inner wall of the annular hole (11).

6. The gas sensor that is easy to install according to claim 5, characterized in that: The arc-shaped portion (9), the elastic extrusion sheet (8) and the extrusion arc-shaped strip (10) are designed as a whole in a "J" shape.

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