Ultrasonic oxygen sensor

Abstract

The utility model relates to the technical field of sensors, and provides an ultrasonic oxygen sensor which comprises a sensor shell and a circuit board, the circuit board is arranged at the position close to the outer surface of the sensor shell, and two fixing blocks are symmetrically and fixedly installed on the outer surface of the center of the sensor shell. And circular holes are formed in the centers of the two fixing blocks. According to the utility model, the insertion rod is inserted into the circular hole, so that the conical surface of the insertion rod is in contact with the inclined surface of the limiting rod and extrudes the insertion rod, the limiting rod faces the outer side, the spring I is synchronously stretched, and under the reset acting force of the spring I, a pulling force can be applied to the square plate; therefore, the limiting rod can be inserted into the limiting hole, the insertion rod is limited, the sensor shell and the circuit board are connected and fixed without using a tool through a screw, the installation is simple and convenient, and the installation efficiency of the sensor shell and the circuit board is improved.

Description

Technical Field

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

[0002] Ultrasonic oxygen sensor series is a sensor used to measure gas flow and oxygen concentration in binary gas. It adopts ultrasonic monitoring technology, which is superior to electrochemical and other oxygen sensors. It has numerical value, numerical display, online monitoring, status alarm and other functions, and can be customized according to customer needs. It can be widely used in household and medical oxygen concentrators, oxygen chambers and other occasions.

[0003] In the prior art, the ultrasonic oxygen sensor is composed of components such as a circuit board and a sensor housing. The circuit board and the sensor housing are connected and fixed by screws. When the ultrasonic oxygen sensor fails and needs to be repaired, tools are needed to remove the screws connecting the circuit board and the sensor housing. The screws may be overtightened during installation, resulting in difficulty in removing the screws, which may cause damage to the circuit board or enlargement of the screw holes in the sensor housing, thereby affecting the normal use of the ultrasonic oxygen sensor. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that an ultrasonic oxygen sensor is composed of components such as a circuit board and a sensor housing, and the circuit board and the sensor housing are connected and fixed by screws. When the ultrasonic oxygen sensor fails and needs to be repaired, it is necessary to use tools to remove the screws connecting the circuit board and the sensor housing. The screws may be too tight during installation, resulting in difficulty in removing the screws, which may cause damage to the circuit board or wire drawing and enlargement of the screw holes in the sensor housing, thereby affecting the normal use of the ultrasonic oxygen sensor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an ultrasonic oxygen sensor, comprising: a sensor housing and a circuit board, the circuit board is arranged near the outer surface of the sensor housing, the outer surface at the center of the sensor housing is symmetrically fixed with two fixing blocks, and the centers of the two fixing blocks are provided with circular holes, and further comprising:

[0006] Two insertion rods are symmetrically fixedly installed on one side of the circuit board, one end of the two insertion rods are movably embedded in the inside of the two circular holes, the opposite sides of the two fixed blocks are movably embedded with limit rods, one end of multiple limit rods are fixedly installed with square plates, the outer surfaces of multiple limit rods are movably sleeved with springs, the outer surfaces of the two insertion rods close to one end thereof are provided with limit holes, and the other ends of the multiple limit rods are symmetrically and movably embedded in the inside of the two limit holes.

[0007] Preferably, one end of the multiple springs is fixedly mounted on one side of the multiple square plates, and the other ends of the multiple springs are fixedly mounted on the opposite sides of the two fixed blocks, so that a pulling force can be applied to the square plates under the resetting force of the springs.

[0008] Preferably, the two fixed blocks are fixedly mounted with round rods on the outer surfaces close to the sensor housing, the outer surfaces of the two round rods are movably sleeved with movable rings, the outer surfaces of the two movable rings are fixedly mounted with square blocks, and the movable rings can slide along the outer surfaces of the round rods by applying pressure to the square blocks.

[0009] Preferably, the outer surfaces of the two round rods are movably sleeved with springs 2, one ends of the two springs 2 are respectively fixedly mounted on the outer surfaces of the two fixed blocks, and the other ends of the two springs 2 are respectively fixedly mounted on one side of the two movable rings. When the pressure on the pressing column disappears, the movable ring can return to its original position under the restoring force of the springs 2.

[0010] Preferably, a U-shaped block 1 is fixedly installed on the opposite side of the two square blocks, a fixing rod 1 is fixedly installed on the opposite side of the two arms of the two U-shaped blocks, and a connecting plate is movably sleeved on the outer surfaces of the two fixing rods 1, and a U-shaped block 2 is fixedly installed on the top of a plurality of square plates, a fixing rod 2 is fixedly installed on the opposite side of the two arms of a plurality of U-shaped blocks 2, and the outer surfaces of the plurality of fixing rods 2 are movably embedded in the interior of one end of a plurality of connecting plates, respectively. By moving the U-shaped block 1 and the fixing rod 1 to one side, a force can be applied to the connecting plate, so that the connecting plate can change its angle around the fixing rod 1 and the fixing rod 2, thereby applying a force to the fixing rod 2 and the U-shaped block 2.

[0011] Preferably, pressing columns are fixedly installed on the tops of the two blocks, and elastic rubber pads are fixedly installed on the tops of the two pressing columns. The setting of the pressing columns makes it convenient to press the blocks, and the setting of the elastic rubber pads improves the comfort when pressing the pressing columns by hand.

[0012] Preferably, one end of the two round rods is fixedly sleeved with a limiting ring, and the setting of the limiting ring plays a role in limiting the movable ring.

[0013] Preferably, one end of the two insertion rods are arranged to be conical, the other ends of the plurality of limiting rods are arranged to be inclined, the outer surface of the sensor housing close to one end thereof is arranged to be provided with an air inlet, and the outer surface of the sensor housing close to the other end thereof is arranged to be provided with an air outlet. Through the above arrangement, it is convenient for the insertion rod to squeeze the limiting rod.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. The utility model inserts the insertion rod into the inside of the circular hole so that the conical surface of the insertion rod contacts and squeezes the inclined surface of the limiting rod, so that the limiting rod moves to the outside, and the spring 1 is stretched synchronously. Under the reset force of the spring 1, a pulling force can be applied to the other plate, so that the limiting rod can be inserted into the inside of the limiting hole to limit the insertion rod. In this way, the sensor housing and the circuit board are connected and fixed by screws without using tools, and the installation is relatively simple and convenient, thereby improving the efficiency of installing the sensor housing and the circuit board.

[0016] 2. The utility model manually presses the pressing column so that the movable ring can slide along one side of the fixed block on the outer surface of the round rod, and the spring 2 is compressed synchronously, and the block is driven to move to one side synchronously, so that the connecting plate changes the angle appropriately around the fixed rod 1 and the fixed rod 2, and a force is applied to the fixed rod 2 through the connecting plate to make it disengage from the inside of the limiting hole, thereby releasing the limit on the insertion rod, so that there is no need to use tools to remove the screws, thereby avoiding damage to the circuit board or wire drawing and enlargement of the screw holes in the sensor housing, thereby ensuring the normal use of the ultrasonic oxygen sensor, and the disassembly process is relatively simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the ultrasonic oxygen sensor provided by the utility model;

[0018] Figure 2 A schematic diagram of the side structure of the ultrasonic oxygen sensor provided by the utility model;

[0019] Figure 3 The ultrasonic oxygen sensor provided by the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 This is a partial cross-sectional structural schematic diagram of the ultrasonic oxygen sensor provided by the utility model.

[0021] Legend:

[0022] 1. Sensor housing; 101. Air inlet; 102. Air outlet; 103. Fixed block; 104. Round hole; 105. Limit rod; 106. Square plate; 107. Spring one; 2. Circuit board; 201. Insert rod; 202. Limit hole; 3. Round rod; 301. Movable ring; 302. Limit ring; 303. Spring two; 304. Square block; 305. U-shaped block one; 306. Fixed rod one; 307. Press column; 308. Elastic rubber pad; 309. Connecting plate; 310. U-shaped block two; 311. Fixed rod two. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Embodiment 1, as Figure 1-4 As shown, the utility model provides an ultrasonic oxygen sensor, comprising: a sensor housing 1 and a circuit board 2, the circuit board 2 is arranged at a position close to the outer surface of the sensor housing 1, and two fixing blocks 103 are symmetrically fixedly installed on the outer surface at the center of the sensor housing 1, and a circular hole 104 is opened at the center of the two fixing blocks 103, and also comprises: two insertion rods 201, which are symmetrically fixedly installed on one side of the circuit board 2, and one end of the two insertion rods 201 is movably embedded in the inside of the two circular holes 104, and the opposite sides of the two fixing blocks 103 are movably embedded with limit rods 105, and one end of the plurality of limit rods 105 is fixedly installed with a square plate 106, and the outer surfaces of the plurality of limit rods 105 are movably A spring 107 is sleeved, and a limiting hole 202 is provided on the outer surface of the two insertion rods 201 near one end thereof, and the other ends of the plurality of limiting rods 105 are symmetrically and movably embedded in the two limiting holes 202 in pairs, and one end of the plurality of springs 107 is fixedly mounted on one side of the plurality of square plates 106, and the other ends of the plurality of springs 107 are fixedly mounted on the opposite sides of the two fixed blocks 103, one end of the two insertion rods 201 is configured to be conical, and the other ends of the plurality of limiting rods 105 are configured to be inclined, and an air inlet 101 is provided on the outer surface of the sensor housing 1 near one end thereof, and an air outlet 102 is provided on the outer surface of the sensor housing 1 near the other end thereof.

[0026] In this embodiment, by inserting the insertion rod 201 into the inside of the circular hole 104, the conical surface of the insertion rod 201 is in contact with the inclined surface of the limiting rod 105 and squeezed, so that the limiting rod 105 moves to the outside, and the spring 107 is stretched synchronously. When the insertion rod 201 is inserted into a certain position of the circular hole 104, the squeezing force on the limiting rod 105 disappears. Under the reset force of the spring 107, a pulling force can be applied to the opposing plate 106, so that the limiting rod 105 can be inserted into the inside of the limiting hole 202, and the insertion rod 201 is limited, so that the sensor housing 1 and the circuit board 2 can be kept in a relatively fixed state. In this way, there is no need to use tools to connect and fix the sensor housing 1 and the circuit board 2 by screws, and the installation is relatively simple and convenient, thereby improving the installation efficiency of the sensor housing 1 and the circuit board 2.

[0027] Embodiment 2, as Figure 1-4 As shown, the outer surfaces of the two fixed blocks 103 close to the sensor housing 1 are fixedly mounted with round rods 3, the outer surfaces of the two round rods 3 are movably sleeved with movable rings 301, the outer surfaces of the two movable rings 301 are fixedly mounted with blocks 304, the outer surfaces of the two round rods 3 are movably sleeved with springs 2 303, one end of the two springs 2 303 is respectively fixedly mounted on the outer surfaces of the two fixed blocks 103, the other ends of the two springs 2 303 are respectively fixedly mounted on one side of the two movable rings 301, the opposite sides of the two blocks 304 are fixedly mounted with U-shaped blocks 1 305, and the two arms of the two U-shaped blocks 1 305 are fixedly mounted on the outer surfaces of the two fixed blocks 103. A fixing rod 1 306 is fixedly installed on the opposite side, and a connecting plate 309 is movably mounted on the outer surfaces of the two fixing rods 1 306, a U-shaped block 2 310 is fixedly installed on the top of the plurality of square plates 106, and a fixing rod 2 311 is fixedly installed on the opposite side of the two arms of the plurality of U-shaped blocks 2 310, and the outer surfaces of the plurality of fixing rods 2 311 are movably embedded in the inside of one end of the plurality of connecting plates 309, respectively, a pressing column 307 is fixedly installed on the top of the two square blocks 304, and an elastic rubber pad 308 is fixedly installed on the top of the two pressing columns 307, and a limiting ring 302 is fixedly mounted on one end of the two round rods 3.

[0028] In this embodiment, by manually pressing the pressing column 307 and with the cooperation of the elastic rubber pad 308, the comfort during pressing is improved, so that the movable ring 301 can slide along the outer surface of the round rod 3 on one side of the fixed block 103, and the spring 2 303 is compressed synchronously, and the square block 304 is moved to one side synchronously, so that the connecting plate 309 changes the angle appropriately around the fixed rod 1 306 and the fixed rod 2 311, and a force is applied to the fixed rod 2 311 through the connecting plate 309, so that the square plate 106 can be moved outward, and the limiting rod 105 is moved outward synchronously, so that It disengages from the inside of the limiting hole 202, releasing the limiting of the insertion rod 201. At this time, the sensor housing 1 and the circuit board 2 can be separated, so there is no need to use tools to remove the screws, thereby avoiding damage to the circuit board 2 or wire drawing and enlargement of the screw holes of the sensor housing 1, thereby ensuring the normal use of the ultrasonic oxygen sensor, and the disassembly process is relatively simple and convenient. When the pressing column 307 is released, the movable ring 301 can be returned to its original position under the reset force of the spring 2 303, and the setting of the limiting ring 302 can limit the movable ring 301.

[0029] Working principle: When the sensor housing 1 and the circuit board 2 need to be installed together, the rod 201 is inserted into the circular hole 104, so that the conical surface of the rod 201 contacts the inclined surface of the limit rod 105 and squeezes it, so that the limit rod 105 moves to the outside, and the spring 107 is stretched synchronously. When the rod 201 is inserted into a certain position of the circular hole 104, the squeezing force on the limit rod 105 disappears, and the other board 106 can be exerted under the reset force of the spring 107. A pulling force is added, so that the limiting rod 105 can be inserted into the limiting hole 202, so as to limit the insertion rod 201, so that the sensor housing 1 and the circuit board 2 can be kept in a relatively fixed state, so that the sensor housing 1 and the circuit board 2 are connected and fixed by screws without using tools, and the installation is relatively simple and convenient, thereby improving the efficiency of the installation of the sensor housing 1 and the circuit board 2. When the ultrasonic oxygen sensor fails and needs to be repaired, the pressing column 307 is manually pressed, and with the cooperation of the elastic rubber pad 308, the pressing column 307 is improved. The comfortable feeling when pressing can make the movable ring 301 slide along one side of the fixed block 103 on the outer surface of the round rod 3, and the spring 2 303 is compressed synchronously, and the block 304 is driven to move to one side synchronously, so that the connecting plate 309 changes the angle appropriately around the fixed rod 1 306 and the fixed rod 2 311, and a force is applied to the fixed rod 2 311 through the connecting plate 309, so that the square plate 106 can move outward, and the limiting rod 105 is driven to move outward synchronously, so that it is disengaged from the inside of the limiting hole 202, and the limit of the insertion rod 201 is released. At this time, the sensor housing 1 and the circuit board 2 can be separated, so that there is no need to use tools to remove the screws, thereby avoiding damage to the circuit board 2 or wire drawing and enlargement of the screw hole of the sensor housing 1, thereby ensuring the normal use of the ultrasonic oxygen sensor, and the disassembly process is relatively simple and convenient. When the pressing column 307 is released, the movable ring 301 can be returned to its original position under the reset force of the spring 2 303, and the setting of the limiting ring 302 can play a role in limiting the movable ring 301.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. Ultrasonic oxygen sensor, including: A sensor housing (1) and a circuit board (2), wherein the circuit board (2) is arranged at a position close to the outer surface of the sensor housing (1), and two fixing blocks (103) are symmetrically fixedly mounted on the outer surface at the center of the sensor housing (1), and a circular hole (104) is opened at the center of each of the two fixing blocks (103), characterized in that it also includes: Two insertion rods (201) are symmetrically fixedly mounted on one side of the circuit board (2); one end of the two insertion rods (201) is movably embedded in the two circular holes (104) respectively; a limiting rod (105) is movably embedded in the opposite sides of the two fixing blocks (103); one end of a plurality of the limiting rods (105) is fixedly mounted with a square plate (106); the outer surfaces of the plurality of limiting rods (105) are movably sleeved with a spring 1 (107); the outer surfaces of the two insertion rods (201) close to one end thereof are provided with limiting holes (202); the other ends of the plurality of limiting rods (105) are symmetrically movably embedded in the two limiting holes (202) in pairs.

2. The ultrasonic oxygen sensor according to claim 1, characterized in that: One end of the plurality of springs (107) is fixedly mounted on one side of the plurality of square plates (106), and the other end of the plurality of springs (107) is fixedly mounted on opposite sides of the two fixed blocks (103).

3. The ultrasonic oxygen sensor according to claim 2, characterized in that: Round rods (3) are fixedly mounted on the outer surfaces of the two fixed blocks (103) close to the sensor housing (1), movable rings (301) are movably sleeved on the outer surfaces of the two round rods (3), and square blocks (304) are fixedly mounted on the outer surfaces of the two movable rings (301).

4. The ultrasonic oxygen sensor according to claim 3, characterized in that: The outer surfaces of the two round rods (3) are movably sleeved with springs 2 (303), one end of the two springs 2 (303) is respectively fixedly mounted on the outer surfaces of the two fixed blocks (103), and the other end of the two springs 2 (303) is respectively fixedly mounted on one side of the two movable rings (301).

5. The ultrasonic oxygen sensor according to claim 3, characterized in that: A U-shaped block 1 (305) is fixedly installed on the opposite side of the two square blocks (304), a fixing rod 1 (306) is fixedly installed on the opposite side of the two arms of the two U-shaped blocks 1 (305), and a connecting plate (309) is movably sleeved on the outer surfaces of the two fixing rods 1 (306). A U-shaped block 2 (310) is fixedly installed on the top of the plurality of square plates (106), and a fixing rod 2 (311) is fixedly installed on the opposite side of the two arms of the plurality of U-shaped blocks 2 (310), and the outer surfaces of the plurality of fixing rods 2 (311) are movably embedded in the interior of one end of the plurality of connecting plates (309).

6. The ultrasonic oxygen sensor according to claim 5, characterized in that: A pressing column (307) is fixedly mounted on the top of each of the two blocks (304), and an elastic rubber pad (308) is fixedly mounted on the top of each of the two pressing columns (307).

7. The ultrasonic oxygen sensor according to claim 4, characterized in that: A limiting ring (302) is fixedly sleeved on one end of each of the two round rods (3).

8. The ultrasonic oxygen sensor according to claim 1, characterized in that: One end of the two insertion rods (201) is configured to be conical, the other ends of the plurality of limit rods (105) are configured to be inclined, an air inlet (101) is configured on an outer surface of the sensor housing (1) close to one end thereof, and an air outlet (102) is configured on an outer surface of the sensor housing (1) close to the other end thereof.

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