Pressure wave switch protection device

Abstract

The utility model relates to the field of pressure wave switch protection equipment, in particular to a pressure wave switch protection device which comprises a mounting frame, an air pipe quick connector and a connecting air pipe, the mounting frame comprises a U-shaped mounting plate, a supporting plate and a protection plate which are sequentially connected end to end, and the length of the protection plate is smaller than that of the mounting plate; the air pipe quick connector comprises a pipe body, a limiting piece and a pressing cap, a mounting groove is formed in the pipe body, the limiting piece comprises a connecting pipe, a sliding groove is formed in the inner wall of the connecting pipe in a surrounding mode, the pressing cap comprises a fixing cylinder, limiting edges and balls, and the balls are embedded in the cylinder wall of the fixing cylinder in the circumferential direction of the fixing cylinder; the outer wall of the section, located from the pipe opening of the pipe body to the ball, of the fixing cylinder is attached to the inner wall of the connecting pipe, and a gap exists between the outer wall of the section, located from the ball to the limiting edge, of the fixing cylinder and the inner wall of the connecting pipe. The effect that the air connecting pipe on the pressure wave switch is not easily damaged in the installation and debugging process is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pressure wave switch protection device, in particular to a pressure wave switch protection device. BACKGROUND

[0002] At present, with the development of domestic tourism, urban traffic congestion, and the growing demand for travel, passenger cars have become an indispensable means of transportation in modern society. To ensure the safety of passengers, anti-pinch switches are widely installed on passenger cars.

[0003] In the existing anti-pinch switch, the pressure wave switch as the main element is directly connected with the air connection pipe on the pressure wave switch through the air guide pipe during installation.

[0004] The prior art in the above has the following defects: the air connection pipe on the pressure wave switch is a nylon pipe with an outer diameter of only 3mm, an inner diameter of 1mm, and a wall thickness of 1mm. During connection and debugging, the air connection pipe will be broken, causing damage to the pressure wave switch. Content of the utility model

[0005] The present application provides a pressure wave switch protection device to prevent the air connection pipe on the pressure wave switch from being easily damaged during installation and debugging.

[0006] The above technical purpose of the present application is achieved by the following technical scheme:

[0007] A pressure wave switch protection device, comprising a mounting frame, an air pipe quick connector and a connecting air pipe, the mounting frame comprises a mounting plate, a support plate and a protection plate which are connected end to end in sequence and in a U shape, the length of the protection plate is less than the length of the mounting plate;

[0008] The air pipe quick connector is installed on the surface of the mounting plate facing the protection plate, the air pipe quick connector comprises a pipe body, a limiting piece and a pressure cap, the mounting slot is formed in the pipe body, the limiting piece is fixedly inserted into the mounting slot, the length of the limiting piece is less than the depth of the mounting slot, the limiting piece comprises a connecting pipe, a sliding groove is formed around the inner wall of the connecting pipe, and the length of the sliding groove is less than the length of the connecting pipe;

[0009] The pressure cap is coaxially inserted into the limiting piece, the length of the pressure cap is less than the depth of the mounting slot, the pressure cap is made of elastic material, and the pressure cap comprises a fixed cylinder, a limiting rib and a ball, the thickness of the cylinder wall of the fixed cylinder gradually increases from the direction away from the cylinder port of the fixed cylinder, the outer wall of the fixed cylinder is inclined outward and forms an inclined surface, the limiting rib is fixedly connected to the outer wall of the fixed cylinder, and the outer peripheral surface of the limiting rib has a gap with the inner wall of the mounting slot;

[0010] The plurality of rolling balls are embedded on the wall of the fixed cylinder in a circumferential direction, the diameter of the rolling ball is larger than the thickness of the wall of the fixed cylinder, the rolling ball on the outer wall of the fixed cylinder is in the sliding groove, the outer wall of the fixed cylinder from the pipe opening to the rolling ball is attached to the inner wall of the connecting pipe, and the outer wall of the fixed cylinder from the rolling ball to the limiting edge has a gap with the inner wall of the connecting pipe.

[0011] The one end of the connecting air pipe is connected with the one end of the pipe body, and the other end of the connecting air pipe is above the lower end of the protection plate.

[0012] By adopting the above technical scheme, the air pipe quick connector is installed on the mounting plate, one end of the air pipe quick connector is connected with the connecting air pipe, the other end of the connecting air pipe is connected with the air connection pipe of the pressure wave switch, when the pressure wave switch is installed and used, the pressure wave switch is fixed on the mounting plate, and then the passenger car air pipe is connected to the air pipe quick connector, since the pressure cap is arranged in the air pipe quick connector, the air pipe inserted in the pressure cap is fixed and not fallen off, at the same time, the passenger car air pipe is not directly connected with the pressure wave switch, so that the air connection pipe of the pressure wave switch is not broken due to the movement of the passenger car air pipe during debugging and installation, and the protection plate on the mounting frame shields the upper half of the pressure wave switch, so as to protect the air connection pipe of the pressure wave switch from being damaged by workers during installation and debugging.

[0013] Optionally, the air pipe quick connector is symmetrically arranged at two ends, and the limiting member and the top cap are respectively provided with two and are respectively located at two ends of the pipe body.

[0014] By adopting the above technical scheme, the air pipe quick connector is symmetrically arranged at two ends, and the limiting member and the top cap are respectively provided with two and are respectively located at two ends of the pipe body.

[0015] Optionally, a fixing groove is arranged in the pipe body, and the fixing groove is arranged on the inner wall of the mounting groove and has a tapered cross section.

[0016] The limiting member further comprises an anti-falling claw connected to the outer wall of the connecting pipe away from the pipe opening, and the anti-falling claw is clamped in the fixing groove.

[0017] By adopting the above technical scheme, the anti-falling claw is clamped in the fixing groove to fix the limiting member in the pipe body, so as to prevent the limiting member from falling outwards.

[0018] Optionally, a limiting groove is further arranged in the pipe body, and the limiting groove is arranged at one end of the inner part of the mounting groove and has a diameter smaller than that of the mounting groove, and the mounting groove and the limiting groove are in a stepped shape.

[0019] By adopting the above technical scheme, when the air pipe is inserted into the pipe body, the pipe opening of the air pipe is inserted into the limiting groove to limit the air pipe, so as to prevent the air pipe from being excessively inserted.

[0020] Optionally, the limiting piece further comprises a limiting ring, which is attached to the end face of the pipe body.

[0021] By adopting the above technical scheme, the limiting ring is fixed to the outer end of the limiting piece, and since the limiting ring is attached to the end face of the pipe body, the limiting piece is prevented from falling into the pipe body due to external force.

[0022] Optionally, the pressure cap further comprises a pressing ring, the inner circle of which is fixed to one end of the fixing cylinder close to the cylinder port.

[0023] By adopting the above technical scheme, the pressing ring is fixed to the outer end of the pressure cap, which increases the contact area of the outer end of the pressure cap, and also ensures that the pressure cap will not slide excessively into the pipe body when the trachea is inserted, facilitating the staff to pull out the pressure cap after the trachea is inserted into the pipe body.

[0024] Optionally, a plurality of springs are fixedly connected between the limiting ring and the pressing ring.

[0025] By adopting the above technical scheme, when the trachea is inserted into the pressure cap, the pressing ring moves towards the limiting ring to compress the spring, and after the trachea is inserted into the pressure cap, the spring elastically deforms to return to the natural state, which pushes out the pressure cap, facilitating the staff to quickly disassemble and assemble the trachea.

[0026] Optionally, a spring slot is formed in the outer wall of the limiting ring away from the pipe wall, and one end of the spring is fixed in the spring slot.

[0027] By adopting the above technical scheme, the pressing ring is pressed towards the limiting ring to compress the spring, and since one end of the spring is fixed in the spring slot, the spring is stable and not dislocated.

[0028] Optionally, the trachea quick connector further comprises a sealing ring, the inner diameter of the ring port of one end of the sealing ring is larger than that of the other end, the inner circle is an inclined surface, the sealing ring is installed at the bottom of the installation slot, and the inner diameter of the end of the sealing ring with the smaller ring port inner diameter is larger than the outer diameter of the limiting slot.

[0029] By adopting the above technical scheme, when the passenger car trachea is inserted into the limiting slot, since the inner diameter of one end of the sealing ring is smaller than the outer diameter of the limiting slot, the inner circle of the sealing ring is tightly contacted with the trachea, which facilitates the sealing of the trachea quick connector.

[0030] In summary, the present application has the following technical effects:

[0031] 1. By providing the installation frame, the upper trachea of the pressure wave switch is not completely exposed on the outer surface, which facilitates the protection of the trachea on the pressure wave switch from being damaged by workers during installation and debugging.

[0032] 2. By providing the trachea quick connector, the passenger car trachea is not directly connected with the trachea on the pressure wave switch, which avoids the trachea on the pressure wave switch from being broken due to the movement of the passenger car trachea during debugging and installation.

[0033] 3. By setting the pressure cap and spring, the trachea can be quickly inserted into the pressure cap while ensuring that the trachea inserted inside is fixed and does not fall off. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the outline structure diagram of the present application;

[0035] Figure 2 is the structure diagram of the present application after installing the pressure wave switch;

[0036] Figure 3 is the cross-sectional structure diagram of one end of the trachea quick connector of the present application.

[0037] BRIEF DESCRIPTION OF DRAWINGS: 1, mounting frame; 11, fixed plate; 12, mounting plate; 13, support plate; 14, protection plate; 15, fixing hole; 16, positioning hole; 17, mounting hole; 2, trachea quick connector; 21, pipe body; 211, mounting groove; 212, fixing groove; 213, limiting groove; 22, limiting piece; 221, limiting ring; 2211, clasp spring groove; 222, connecting pipe; 2221, sliding groove; 223, anti-falling claw; 224, spring; 23, pressure cap; 231, pressing ring; 232, fixed cylinder; 233, limiting edge; 234, ball; 24, airway; 25, mounting piece; 251, hexagonal hole; 26, sealing ring; 3, threaded connecting piece; 4, connecting trachea; DETAILED DESCRIPTION

[0038] The present application will be further described in detail below in combination with the drawings.

[0039] The embodiment of the present application discloses a pressure wave switch protection device, referring to Figure 1 , the protection device comprises a mounting frame 1, a trachea quick connector 2 connected to the mounting frame 1, a threaded connecting piece 3 connecting the trachea quick connector 2 to the mounting frame 1, and a connecting pipe 4 inserted at one end into the lower end of the trachea quick connector 2.

[0040] Referring to Figure 1 , the mounting frame 1 comprises a fixed plate 11, a mounting plate 12 connected perpendicularly at one end to the fixed plate 11, a support plate 13 connected at one end to the mounting plate 12 away from the fixed plate 11, and a protection plate 14 connected perpendicularly at one end to the support plate 13 away from the mounting plate 12. The fixed plate 11, the mounting plate 12, the support plate 13 and the protection plate 14 are four rectangular plates with consistent width and are integrally formed and connected, the length of the mounting plate 12 is greater than the length of the fixed plate 11, and the length of the mounting plate 12 is greater than the length of the protection plate 14. The plate surfaces of the fixed plate 11 and the support plate 13 are parallel to each other, the mounting plate 12 and the protection plate 14 are arranged in a spaced manner and the plate surfaces are parallel to each other, and the mounting plate 12, the support plate 13 and the protection plate 14 are in a U shape.

[0041] Referring to Figure 1 and Figure 2 Two fixing holes 15 are arranged on the fixing plate 11 in a spaced manner and axially perpendicular to the plate surface of the fixing plate 11, and the hole openings are chamfered to form flared shapes. The connecting line of the two fixing holes 15 is perpendicular to the length direction of the mounting plate 12 and parallel to the plate surface of the mounting plate 12. Two positioning holes 16 are arranged on the mounting plate 12 in a spaced manner near the position close to the fixing plate 11 and axially perpendicular to the plate surface of the mounting plate 12. The connecting line of the two positioning holes 16 is perpendicular to the length direction of the mounting plate 12 and parallel to the plate surface of the mounting plate 12, and the positioning holes 16 are used for mounting the pressure wave switch by means of bolts. The mounting holes 17 are arranged on the positioning holes 16 near the edge of the mounting plate 12, and the threaded connecting pieces 3 are inserted into the mounting holes 17 to fix the trachea quick connector 2 on the mounting plate 12.

[0042] Referring to Figure 3 The trachea quick connector 2 comprises a pipe body 21, a limiting piece 22 mounted in the pipe body 21, a pressing cap 23 coaxially inserted into the limiting piece 22, and a mounting sheet 25 fixed to the pipe body 21. The pipe body 21 is L-shaped and internally provided with a ventilation channel 24 communicating between both ends of the pipe body 21. The trachea quick connector 2 is symmetrically arranged at both ends, and the limiting piece 22 and the pressing cap 23 are respectively provided with two and respectively located at both ends of the pipe body 21. The mounting sheet 25 is fixed to the L-shaped corner part of the pipe body 21, and the mounting sheet 25 is provided with a hexagonal hole 251. The threaded connecting piece 3 comprises a screw rod inserted into the mounting hole 17 and a nut screwed with the screw rod. The bolt is sequentially inserted into the mounting hole 17 and the hexagonal hole 251, and the nut is connected to the bolt and abuts against the mounting sheet 25.

[0043] Referring to Figure 3 The pipe body 21 is internally provided with a mounting groove 211, a fixing groove 212, and a limiting groove 213. The mounting groove 211 is arranged in the end surface of the pipe body 21 and has a depth less than a horizontal section of the pipe body 21. The fixing groove 212 is annularly arranged on the inner wall of the mounting groove 211 and has a tapered cross section. The fixing groove 212 forms two groove walls, one of which is arranged on a plane perpendicular to the pipe opening of the pipe body 21, and the other groove wall is arranged in a tilted manner toward the pipe opening of the pipe body 21. The limiting groove 213 is arranged at one end inside the mounting groove 211 and has a diameter less than that of the mounting groove 211. The mounting groove 211 and the limiting groove 213 are in a stepped manner. When the trachea is inserted into the pipe body 21, the pipe opening of the trachea is inserted into the limiting groove 213 to limit the trachea and prevent excessive insertion of the trachea.

[0044] Referring to Figure 3, the limiting piece 22 includes a limiting ring 221, a connecting pipe 222, a claw 223 and a spring 224. The limiting piece 22 is inserted into the mounting groove 211, and the length of the limiting piece 22 is less than the depth of the mounting groove 211. The limiting ring 221 is attached to the end face of the pipe body 21, and the width of the limiting ring 221 is equal to the thickness of the pipe wall of the pipe body 21. Four spring slots 2211 are uniformly arranged on the outer wall of the limiting ring 221 away from the pipe wall of the pipe body 21. The connecting pipe 222 is integrally formed and connected to the inner circle of the limiting ring 221. The thickness of the pipe wall of the connecting pipe 222 gradually decreases from the direction away from the limiting ring 221. The inner wall of the connecting pipe 222 is inclined inward and forms an inclined surface. The outer wall of the connecting pipe 222 is attached to the inner wall of the mounting groove 211. The inclined surface of the inner wall of the connecting pipe 222 surrounds a sliding groove 2221, and the length of the sliding groove 2221 is less than the length of the connecting pipe 222.

[0045] With reference to Figure 3 The claw 223 is integrally formed and connected to the outer wall of the connecting pipe 222 away from the limiting ring 221. The claw 223 is adapted to the fixing groove 212 and is clamped in the fixing groove 212. The spring 224 is provided with four ends, and one end is fixedly connected in the spring slot 2211. The limiting piece 22 is inserted into the mounting groove 211, the limiting ring 221 is attached to the pipe port end face of the pipe body 21, which prevents the limiting piece 22 from being excessively inserted into the mounting groove 211. The claw 223 is clamped in the fixing groove 212 to fix the limiting piece 22 in the pipe body 21, which prevents the limiting piece 22 from falling outwards.

[0046] With reference to Figure 3 The pressing cap 23 includes a pressing ring 231, a fixing cylinder 232, a limiting rib 233 and a ball 234. The pressing cap 23 is movably inserted into the limiting piece 22, and the length of the pressing cap 23 is less than the depth of the mounting groove 211. The pressing cap 23 is made of elastic material, such as rubber, plastic and the like. The pressing cap 23 can be deformed when it is extruded by external force. The outer diameter of the pressing ring 231 is equal to the outer diameter of the limiting ring 221, and the other end of the spring 224 is fixedly connected to the outer wall of the pressing ring 231 close to the limiting ring 221. The fixing cylinder 232 is integrally formed and connected to the inner circle of the pressing ring 231. The thickness of the fixing cylinder 232 close to one end of the pressing ring 231 is less than the thickness of the fixing cylinder 232 away from one end of the pressing ring 231. The limiting rib 233 is integrally formed and connected to the outer wall of the fixing cylinder 232 away from one end of the pressing ring 231. The outer peripheral surface of the limiting rib 232 has a gap with the inner wall of the mounting groove 211. The side wall of the limiting rib 233 parallel to the pressing ring 231 is attached to the tail end outer wall of the limiting piece 22, which prevents the pressing cap 23 from falling outwards.

[0047] With reference to Figure 3, the plurality of rolling balls 234 are inlaid on the wall of the fixed cylinder 232 in a circumferential direction of the fixed cylinder 232, the diameter of the rolling ball 234 is greater than the thickness of the wall of the fixed cylinder 232, and the opposite sides of the rolling ball 234 are located on the inner wall and the outer wall of the fixed cylinder 232 respectively, and the rolling ball 234 is located in the sliding groove 2221. The outer wall of the fixed cylinder 232 located at the segment of the rolling ball 234 to the pressing ring 231 is attached to the inner wall of the connecting pipe 222, and the outer wall of the fixed cylinder 232 located at the segment of the rolling ball 234 to the limiting edge 233 has a gap with the inner wall of the connecting pipe 222.

[0048] The cap 23 is pressed into the pipe body 21 to compress the spring 224, the rolling ball 234 slides into the pipe body 21 along the sliding groove 2221, the sliding distance of the rolling ball 234 in the sliding groove 2221 is less than the distance between the outer wall of the limiting edge 233 away from the pressing ring 231 and the bottom of the installation groove 211, since the sliding groove 2221 is arranged on the inclined surface of the connecting pipe 222, the cap 23 is made of elastic material, the force between the connecting pipe 222 and the rolling ball 234 is reduced, after the trachea is inserted into the fixed cylinder 232, the end of the fixed cylinder 232 away from the pressing ring 231 can be elastically deformed, which facilitates the insertion of the trachea. When the trachea is inserted into the cap 23, the spring 224 is elastically deformed to return to the natural state, the cap 23 is pushed out, the rolling ball 234 slides out of the pipe body 21 along the sliding groove 2221, the force between the limiting member 222 and the rolling ball 234 is increased, the tail end of the limiting edge 233 is clamped between the sliding groove 2221 and the trachea and elastically deformed to shrink inward to clamp the trachea, so that the trachea does not fall off.

[0049] Reference Figure 3 The trachea quick connector 2 further comprises a sealing ring 26. The inner diameter of the ring opening at one end of the sealing ring 26 is greater than that at the other end, the inner ring is an inclined surface and the inclined surface faces the limiting edge 233. The sealing ring 26 is installed on the bottom of the installation groove 211, the outer circumferential surface of the sealing ring 26 abuts against the inner wall of the installation groove 211, and the side wall of the end with smaller inner diameter abuts against the bottom end of the installation groove 211. When the trachea is inserted into the trachea quick connector 2, the trachea passes through the cap 23, and the outer wall of the trachea abuts against the inner ring of the sealing ring 26.

[0050] Reference Figure 2 When the pressure wave switch is used, the pressure wave switch is installed on the mounting plate 12 through the positioning hole 16 by means of the bolt, one end of the connecting trachea 4 is connected with one end of the trachea quick connector 2, and the other end of the connecting trachea 4 is connected with the connecting trachea on the pressure wave switch. Since the protective plate 14 is located on the outer side of the pressure wave switch and the length of the protective plate 14 shields the upper half of the switch, the connecting trachea on the pressure wave switch is protected from being broken and damaged due to bumping during installation by workers.

[0051] When the protection device is installed on the passenger car through the fixing hole 15, only the air guide pipe of the passenger car is inserted into the other end of the air pipe opening plug to be used. Since the air guide pipe of the passenger car is only inserted into the fixed air pipe opening plug, the air guide pipe on the pressure wave switch is not damaged due to the movement of the air guide pipe of the passenger car.

[0052] The specific embodiments are only illustrative of the application and are not intended to limit the application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, as long as the modifications are within the scope of the claims of the application.

Claims

1. A pressure wave switch protection device, characterized by: The application relates to a quick connecting device for a trachea tube, which comprises a mounting frame (1), a trachea tube quick connector (2) and a connecting trachea tube (4), wherein the mounting frame (1) comprises a mounting plate (12), a supporting plate (13) and a protection plate (14) which are sequentially connected in a U shape, and the length of the protection plate (14) is smaller than that of the mounting plate (12). The trachea tube quick connector (2) is mounted on the plate surface of the mounting plate (12) towards the protection plate (14), and the trachea tube quick connector (2) comprises a tube body (21), a limiting piece (22) and a pressing cap (23), the tube body (21) is provided with a mounting groove (211) in the inside, the limiting piece (22) is fixedly inserted into the mounting groove (211), the length of the limiting piece (22) is smaller than the depth of the mounting groove (211), the limiting piece (22) comprises a connecting pipe (222), a sliding groove (2221) is formed in the inner wall of the connecting pipe (222), and the length of the sliding groove (2221) is smaller than that of the connecting pipe (222). The pressing cap (23) is coaxially inserted into the limiting piece (22), the length of the pressing cap (23) is smaller than the depth of the mounting groove (211), the pressing cap (23) is made of elastic material, the pressing cap (23) comprises a fixed cylinder (232), a limiting rib (233) and a plurality of rolling balls (234), the thickness of the cylinder wall of the fixed cylinder (232) gradually increases from the direction away from the cylinder port of the fixed cylinder (232), the outer wall of the fixed cylinder (232) is inclined to the outside of the tube and forms an inclined surface, the limiting rib (233) is fixedly connected to the outer wall of the fixed cylinder (232), and a gap exists between the outer peripheral surface of the limiting rib (233) and the inner wall of the mounting groove (211). The plurality of rolling balls (234) are embedded on the cylinder wall of the fixed cylinder (232) in a circumferential direction, the diameter of the rolling ball (234) is greater than the thickness of the cylinder wall of the fixed cylinder (232), the rolling ball (234) located on the outer wall of the fixed cylinder (232) is in the sliding groove (2221), the outer wall of the fixed cylinder (232) located from the port of the tube body (21) to the rolling ball (234) is attached to the inner wall of the connecting pipe (222), and a gap exists between the outer wall of the fixed cylinder (232) located from the rolling ball (234) to the limiting rib (233) and the inner wall of the connecting pipe (222). One end of the connecting trachea tube (4) is connected to one end of the tube body (21), and the other end of the connecting trachea tube (4) is located above the lower end of the protection plate (14).

2. A pressure wave switch protection device according to claim 1, characterized in that: The trachea tube quick connector (2) is symmetrically arranged at two ends, and the limiting piece (22) and the top cap are respectively provided with two limiting pieces (22) and two top caps which are respectively located at the two ends of the tube body (21).

3. A pressure wave switch protection device according to claim 2, characterized in that: The tube body (21) is provided with a fixing groove (212) in the inside, and the fixing groove (212) is formed in the inner wall of the mounting groove (211) in a surrounding manner and has a tapered cross section. The limiting piece (22) further comprises an anti-dropping claw (223) which is connected to the outer wall of the connecting pipe (222) away from the port, and the anti-dropping claw (223) is clamped in the fixing groove (212).

4. A pressure wave switch protection device according to claim 3, characterized in that: The pipe body (21) is further provided with a limiting groove (213) which is arranged at the inner end of the mounting groove (211) and has a diameter smaller than that of the mounting groove (211), and the mounting groove (211) and the limiting groove (213) are in a stepped shape.

5. A pressure wave switch protection device according to claim 2, characterized in that: The limiting member (22) further comprises a limiting ring (221) which is attached to the end face of the pipe body (21).

6. A pressure wave switch protection device according to claim 5, characterized in that: The pressing cap (23) further comprises a pressing ring (231) which is fixedly connected to the end of the fixing cylinder (232) close to the cylinder mouth.

7. A pressure wave switch protection device according to claim 6, characterized in that: A plurality of springs (224) are fixedly connected between the limiting ring (221) and the pressing ring (231).

8. A pressure wave switch protection device according to claim 7, characterized in that: The outer wall of the limiting ring (221) away from the pipe wall is provided with a clamping spring groove (2211), and one end of the spring (224) is fixedly connected in the clamping spring groove (2211).

9. A pressure wave switch protection device according to claim 1, characterized in that: The trachea quick connector (2) further comprises a sealing ring (26), the inner diameter of the ring mouth of one end of the sealing ring (26) is larger than that of the other end, the inner ring is an inclined surface, the sealing ring (26) is installed at the bottom of the mounting groove (211), and the inner diameter of the end of the sealing ring (26) with the smaller ring mouth inner diameter is larger than the outer diameter of the limiting groove (213).

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