Detachable sensor packaging device

Abstract

The utility model relates to the technical field of sensor packaging, in particular to a detachable sensor packaging device which comprises an upper cavity, a lower shell and a pressing beam, the upper cavity and the lower shell are in butt joint, a sensor is located in a space formed by butt joint of the upper cavity and the lower shell, and a sealing ring is arranged at the butt joint position of the upper cavity and the lower shell. The pressing beam is located outside the upper cavity and the lower shell, a guide shaft and a pressing lifting pin are arranged between the upper cavity and the pressing beam, a hook plate is arranged at the position where the pressing beam makes contact with the lower shell, a step table is arranged at the position, opposite to the hook plate, of the lower shell, machining platforms are arranged on the two sides of the step table, and the distance between the platforms on the two sides is smaller than the distance between the inner sides of the hook plate. A standardized interface is arranged in the lower shell, the sensor is detachably connected with the standardized interface, and sealant is filled below the sensor. The sensor packaging device provided by the utility model has the advantages of high sealing performance and convenient disassembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor packaging technical field, concretely relates to a sensor packaging device with composite sealing structure and convenient to disassemble and replace. BACKGROUND

[0002] In the prior art, there is a conflict between sealing performance and dismountability. Although traditional sealing methods (such as glue bonding and welding) have good sealing performance, the sensor or the shell is easily damaged when the sensor is replaced. The sealing performance of the dismountable structure (such as threaded connection) is insufficient, and it is difficult to meet the dustproof, waterproof or air-tightness requirements of high-precision sensors. Therefore, a packaging scheme with high sealing performance and convenient dismountability is needed. SUMMARY

[0003] In view of the defects of the prior art, the utility model provides a dismountable sensor packaging device which has good sealing performance and is convenient to dismount.

[0004] In order to solve the technical problem, the utility model adopts the technical scheme of a dismountable sensor packaging device, which comprises an upper chamber, a lower shell and a pressure beam. The upper chamber and the lower shell are connected together, and the sensor is located in the space formed by the connection of the upper chamber and the lower shell. A sealing ring is arranged at the connection position of the upper chamber and the lower shell. The pressure beam is located outside the upper chamber and the lower shell. A guide shaft and a compression top pin are arranged between the upper chamber and the pressure beam. One end of the guide shaft is threadedly connected with the upper chamber, and the other end of the guide shaft passes through a guide hole in the pressure beam. A locking threaded hole is formed in the pressure beam, and the compression top pin is screwed into the locking threaded hole and abuts against the end of the upper chamber. A hook plate is arranged at the position where the pressure beam contacts the lower shell. A stepped platform is arranged at the position opposite to the hook plate of the lower shell. Platforms are formed on both sides of the stepped platform. Other stepped platforms outside the platforms are locking platforms. The distance between the two platforms is smaller than the inner distance of the hook plate, and the maximum distance between the locking platforms is greater than the inner distance of the hook plate. A standardized interface is arranged in the lower shell, and the sensor is detachably connected with the standardized interface. Sealing glue is filled below the sensor.

[0005] Further, a sensor chamber for placing the sensor is formed in the upper chamber. An air inlet and an air outlet are formed in the sensor chamber.

[0006] Further, an annular sealing groove is formed in the end face of the upper chamber and the lower shell. The sealing ring is arranged in the annular sealing groove.

[0007] Further, the part where the upper chamber and the lower shell are connected is inwardly contracted to form a boss. A recess hole for placing the sensor is formed in the lower shell and matched with the boss. The boss is embedded in the recess hole to realize the positioning of the upper chamber and the lower shell.

[0008] Further, a sensor mounting base is arranged below the recess hole, and the standardized interface is arranged on the sensor mounting base.

[0009] Furthermore, the pressure beam is a U-shaped frame, with the middle of the U-shaped frame located at the top of the upper chamber. The guide hole and locking thread hole are located in the middle of the U-shaped frame, and the two sides of the U-shaped frame are located on the outside of the upper chamber and the lower shell. The hook plate is located at the bottom of the two sides of the U-shaped frame and is formed by bending the two sides of the U-shaped frame inward.

[0010] Furthermore, there are two guide holes, with the locking threaded hole located between the two guide holes.

[0011] Furthermore, the standardized interface connection cable passes through the sealant and extends to the outside of the lower housing.

[0012] Furthermore, the standardized interface is either a spring contact or a pin connector.

[0013] Furthermore, the sealing ring material is silicone or fluororubber.

[0014] The beneficial effects of this utility model are as follows: This utility model adopts a multi-layered protection of physical sealing (a mechanical structure consisting of a sealing ring and a pressure beam) and chemical sealing (sealant), avoiding the risk of single-seal failure. The reversible sealing material (replaceable sealing ring) allows for repeated disassembly and assembly without reducing sealing performance. The standardized interface design significantly reduces sensor replacement time. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the present invention in the locked state;

[0016] Figure 2 This is a cross-sectional view of the present invention in the disassembled state;

[0017] Figure 3 This is a schematic diagram of the external structure of the present invention when it is in the locked state;

[0018] Figure 4 This is a schematic diagram of the external structure of the present invention in the disassembled state;

[0019] Figure 5 for Figure 1 or Figure 2 Top view;

[0020] In the diagram: 1. Upper chamber; 2. Lower shell; 3. Pressure beam; 101. Annular sealing groove; 102. Sealing ring; 103. Guide shaft; 104. Guide groove; 105. Locking threaded hole; 106. Pressing pin; 107. Hook plate; 108. Sensor chamber; 109. Boss; 110. Recessed hole; 111. Air inlet; 112. Air outlet; 201. Sensor; 202. Standardized interface; 203. Sensor mounting base; 204. Sealant; 205. Connecting cable; 206. Platform; 207. Locking platform. DETAILED DESCRIPTION

[0021] The utility model will be further described in connection with the drawings and specific embodiments.

[0022] Embodiment 1

[0023] The embodiment discloses a detachable sensor packaging device, which comprises an upper chamber 1, a lower shell 2 and a pressing beam 3. Figure 1 、 2 The upper chamber 1 and the lower shell 2 are butted together and are compressed and detached by the pressing beam 3. A sensor chamber 108 is formed at the butting position of the upper chamber 1 and the lower shell 2, a sensor 201 is located in the sensor chamber 108, and an air inlet 111 and an air outlet 112 are arranged on the sensor chamber 108. During testing, test gas enters the sensor chamber 108 from the air inlet 111 and is discharged from the air outlet 112. At the same time of gas flow, the sensor 201 analyzes the flowing gas. In order to realize sealing, an annular sealing groove 101 is arranged on the periphery of the sensor chamber 108 (i.e. the butting position of the upper chamber 1 and the lower shell 2), and an elastic sealing ring 102 is arranged in the annular sealing groove 101. The material of the elastic sealing ring 102 can be silicone or fluororubber.

[0024] The pressing beam 3 is located outside the upper chamber 1 and the lower shell 2, a guide shaft 103 and a compression top pin 106 are arranged between the upper chamber 1 and the pressing beam 3, one end of the guide shaft 103 is connected with the upper chamber 1, the other end of the guide shaft 103 penetrates through a guide hole 104 on the pressing beam 3, a locking threaded hole 105 is formed on the pressing beam 3, the compression top pin 106 is rotated on the locking threaded hole 105 and abuts against the end portion of the upper chamber 1. A hook plate 107 is arranged at the position where the pressing beam 3 contacts the lower shell 2, a stepped platform is arranged at the position opposite to the hook plate 107 on the lower shell 2, platforms 206 are arranged on both sides of the stepped platform, other stepped platforms outside the platforms are locking platforms 207, the distance between the two platforms 206 is smaller than the inner distance of the hook plate 107, and the maximum distance between the locking platforms 207 is greater than the inner distance of the hook plate 107. Specifically, the pressing beam 3 is a U-shaped frame, the middle of the U-shaped frame is located at the top of the upper chamber 1, the guide hole 104 and the locking threaded hole 105 are formed in the middle of the U-shaped frame, the two sides of the U-shaped frame are located outside the upper chamber 1 and the lower shell 2, and the hook plate 107 is located at the bottom of the two sides of the U-shaped frame and is formed by bending inward from the two sides of the U-shaped frame. Figure 5 As shown in FIG. 2, the number of the guide holes 104 is two, and the locking threaded hole 105 is located between the two guide holes 104.

[0025] The lower shell 2 is provided with a sensor mounting base 203 and a standardized interface 202 (spring contact or pin connector), the standardized interface 202 is arranged on the sensor mounting base 203, the sensor 201 is detachably connected with the standardized interface 202, the sensor 201 is convenient to disassemble and replace, the sensor mounting base 203 is filled with sealing glue 204 below. The connecting cable 205 of the standardized interface 202 passes through the sealing glue 204 and leads out to the outside of the lower shell 2.

[0026] In the embodiment, the part where the upper chamber 1 is connected with the lower shell 2 is inwardly retracted to form a boss 109, the lower shell 2 is provided with a recess hole 110 which matches the boss 109 and places the sensor 201, the boss 109 is embedded in the recess hole 110, and the positioning of the upper chamber 1 and the lower shell 2 is realized. The standardized interface 202 and the sensor mounting base 203 are located below the recess hole 110.

[0027] The assembly mode of the device described in the embodiment is as follows: the sensor 201 is placed in the recess hole 110 of the lower shell 2, the electrical contact points on the sensor 201 are in contact with the standardized interface (spring contact in the embodiment) 204 on the sensor mounting base 203, the connecting cable 205 leads out to the outside of the lower shell 2, and the sealing glue 204 fills the micro gaps below the sensor mounting base 203.

[0028] The elastic sealing ring 102 is installed in the annular sealing groove 101 of the upper chamber 1, the upper chamber 1 is connected with the pressure beam 3 through two guide shafts 103, the guide shafts 103 are threadedly connected with the upper chamber and pass through the guide holes 104 on the pressure beam, and the compression top pin 106 passes through the locking threaded hole to compress the upper chamber. The hook plate 107 is processed on the pressure beam 3, the stepped platform is arranged on the lower shell 2, the platforms 206 are processed on both sides of the stepped platform, the distance between the two platforms 206 is smaller than the inside distance of the hook plate 107 of the pressure beam 3, so that the pressure beam 3 can pass through, and when the hook plate 107 of the pressure beam 3 rotates by a certain angle after passing through the platforms 206, the compression top pin 106 is tightened, so that the hook plate 107 is locked with the locking platform 207, and the locked state is as shown in Figure 3 When locked, the elastic sealing ring 102 on the upper chamber 1 is deformed under pressure to realize the first level sealing, and the physical sealing of the sensor 201 is realized, and the sealing glue 204 filled in the lower shell 2 forms the second level sealing, and the chemical sealing of the sensor 201 is realized.

[0029] When the device is disassembled, the compression top pin 106 is loosened first, then the platform 206 on the lower shell 2 is rotated to be parallel to the hook plate 107, the locking between the pressure beam 3 and the lower shell 2 is released, the hook plate 107 is lifted upward through the platforms 206, and the lower shell 2 is separated from the pressure beam 3, so that the lossless separation of the packaging device is realized, and the sensor 201 is replaced. The disassembled state is as shown in Figure 4 .

[0030] The utility model discloses a kind of sealing forms are realized to sensor by two kinds of sealing, avoid single sealing failure risk, and the detachable connection of pressure beam and upper chamber, lower shell, so that the device can be conveniently disassembled, replace sensor.

[0031] The above description is only the basic principle and preferred embodiment of the utility model, and the improvements and substitutions made by the person skilled in the art according to the utility model belong to the protection scope of the utility model.

Claims

1. A removable sensor packaging device, characterized by: The application relates to a sensor housing which comprises an upper chamber, a lower shell and a pressing beam, the upper chamber and the lower shell are butted together, a sensor is arranged in a space formed by the butting of the upper chamber and the lower shell, a sealing ring is arranged at the butting position of the upper chamber and the lower shell, the pressing beam is arranged outside the upper chamber and the lower shell, a guide shaft and a pressing top pin are arranged between the pressing beam and the upper chamber, one end of the guide shaft is threadedly connected with the upper chamber, the other end of the guide shaft penetrates through a guide hole in the pressing beam, locking screw holes are formed in the pressing beam, the pressing top pin penetrates through the locking screw holes and abuts against the end of the upper chamber, a hook plate is arranged at the position where the pressing beam contacts with the lower shell, a stepped platform is arranged at the position opposite to the hook plate of the lower shell, platforms are arranged at both sides of the stepped platform, other stepped platforms outside the platforms are locking platforms, the interval of the platforms at both sides is smaller than the interval of the inner side of the hook plate, the maximum interval of the locking platforms is larger than the interval of the inner side of the hook plate, a standardized interface is arranged in the lower shell, the sensor is detachably connected with the standardized interface, and sealing glue is filled below the sensor.

2. The detachable sensor packaging device of claim 1, wherein: A sensor chamber for placing the sensor is formed in the upper chamber, air inlets and air outlets are formed in the sensor chamber.

3. The detachable sensor packaging device of claim 2, wherein: An annular sealing groove is formed in the end face of the upper chamber and the lower shell, and the sealing ring is arranged in the annular sealing groove.

4. The detachable sensor packaging device of claim 1, wherein: The part where the upper chamber is connected with the lower shell is inwardly contracted to form a boss, a concave hole for placing the sensor and matched with the boss is formed in the lower shell, the boss is embedded in the concave hole, and the positioning of the upper chamber and the lower shell is realized.

5. The detachable sensor packaging device of claim 4, wherein: A sensor mounting base is arranged below the concave hole, and the standardized interface is arranged on the sensor mounting base.

6. The detachable sensor packaging device of claim 1, wherein: The pressing beam is a U-shaped frame, the middle part of the U-shaped frame is arranged on the top of the upper chamber, the guide hole and the locking screw hole are formed in the middle part of the U-shaped frame, the two sides of the U-shaped frame are arranged outside the upper chamber and the lower shell, and the hook plate is arranged at the bottom of the two sides of the U-shaped frame and is formed by inwardly bending the two sides of the U-shaped frame.

7. The detachable sensor packaging device of claim 6, wherein: The number of the guide holes is two, and the locking screw hole is arranged between the two guide holes.

8. The detachable sensor packaging device of claim 1, wherein: The connecting cable of the standardized interface penetrates through the sealing glue and is led out to the outside of the lower shell.

9. The detachable sensor packaging device of claim 1, wherein: The standardized interface is a spring contact or a pin type connector.

10. The detachable sensor packaging device of claim 1, wherein: The material of the sealing ring is silica gel or fluorine rubber.

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