Oxygen supply device for hyperbaric oxygen therapy

Abstract

The utility model relates to the technical field of oxygen supply devices, in particular to an oxygen supply device for hyperbaric oxygen therapy, which comprises a hyperbaric oxygen box, an air valve fixedly arranged on the side face of the hyperbaric oxygen box, an exhaust pipe fixedly arranged on one side of the air valve, a fixing ring fixedly arranged at the top end of the exhaust pipe, and two movable grooves formed in the side face of the fixing ring. Pressing plates are arranged in the two movable grooves, two fixing bases are fixedly arranged on the side face of each pressing plate, four connecting bases are fixedly arranged on the side face of the fixing ring, a bidirectional threaded rod is rotationally connected between two connecting bases, and a limiting rod is fixedly arranged between the other two connecting bases; the oxygen supply pipe dismounting device has the advantages that the two pressing plates can be conveniently and automatically adjusted to be close to or away from each other, so that the oxygen supply pipe can be dismounted and mounted in a labor-saving manner, the dismounting and mounting efficiency of the oxygen supply pipe is improved, and the use portability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen supply devices, in particular to an oxygen supply device for hyperbaric oxygen therapy. Background Art

[0002] Hyperbaric oxygen therapy refers to a treatment method in which pressurized oxygen is supplied to the patient for breathing, so as to increase the diffusion rate of oxygen in the blood and treat some diseases caused by hypoxia. Hyperbaric oxygen therapy requires high-pressure oxygen to be provided by an oxygen supply device.

[0003] The patent specification with the announcement number CN219001554U discloses a hyperbaric oxygen therapy oxygen supply device, which includes a base, an oxygen supply bottle, a rigid exhaust pipe, a support plate, a hose, and a valve. Several oxygen supply bottles are arranged on the base, and the lower part of one side of the oxygen supply bottle is connected to a rigid exhaust pipe, which is in communication with the inside of the oxygen supply bottle. The upper part of the oxygen supply bottle is connected to a support plate, which is connected to a hose. The hose passes through the support plate and is connected to the rigid exhaust pipe at its bottom. The upper part of the hose is connected to a valve for controlling and regulating the oxygen output of the hose. The upper end of the hose is connected to a rigid exhaust pipe for connecting to the oxygen mask of the oxygen inhaler. By cooperating with the rigid exhaust pipe, the fixing block, and the clamping block, the oxygen inhalation connecting half pipe is connected to the rigid exhaust pipe to achieve efficient oxygen supply.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned high-pressure oxygen therapy oxygen supply device has the following problems: the device uses a first elastic member to squeeze the clamp block, so that the oxygen inhalation connecting half-tube and the hard exhaust pipe are fixed together. In order to ensure the sealing of the connection between the oxygen inhalation connecting half-tube and the hard exhaust pipe, the first elastic member needs to apply a large extrusion force to the clamp block, making it difficult for the two clamp blocks to separate. When the oxygen inhalation connecting half-tube needs to be separated from the hard exhaust pipe, a large force needs to be applied to separate the two clamp blocks, making it more laborious to disassemble and assemble the oxygen inhalation connecting half-tube, thereby reducing the portability of the device. In view of this, an oxygen supply device for high-pressure oxygen therapy is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the present invention is to solve one or more shortcomings in the prior art and to provide an oxygen supply device for hyperbaric oxygen therapy.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an oxygen supply device for hyperbaric oxygen therapy, characterized by comprising:

[0007] Hyperbaric oxygen box, with an air valve fixed on the side;

[0008] an exhaust pipe, a first end of which is connected to the air valve; and

[0009] a fixing ring connected to the second end of the exhaust pipe;

[0010] In which, a first movable groove is respectively opened on both sides of the fixing ring, an arc-shaped pressure plate is provided inside the first movable groove, and a first fixed seat is fixed at both ends of the arc pressure plate, and the fixing ring is correspondingly provided with four connecting seats corresponding to the first fixed seat, wherein a spacing adjustment mechanism is connected between two adjacent connecting seats of a group, and the spacing adjustment mechanism is a two-way threaded rod, and a limiting rod is provided between two adjacent connecting seats of another group, the two ends of the two-way threaded rod are respectively connected to the two adjacent first fixed seats and used to adjust the distance between the two arc pressure plates, and one end of the two-way threaded rod is provided with a forward and reverse motor), and the two ends of the limiting rod are respectively connected to the two adjacent fixing seats, a fixed limiting ring is sleeved inside the fixing ring, and a mounting ring is sleeved between the limiting ring and the fixing ring, and the top of the mounting ring is connected to the oxygen supply pipe.

[0011] According to another aspect of the present invention, the forward and reverse motor is used to rotate the bidirectional threaded rod to adjust the distance between the two arc-shaped pressure plates.

[0012] According to another aspect of the present invention, first sealing gaskets are fixedly provided on the inner sides of the two arc-shaped pressure plates, and the inner sides of the two first sealing gaskets are in contact with the side surfaces of the mounting ring.

[0013] According to another aspect of the present invention, a second sealing gasket is fixedly provided on the side of the limiting ring, the side of the second sealing gasket is in contact with the inner side of the mounting ring, and the second sealing gasket is squeezed between the limiting ring and the mounting ring.

[0014] According to another aspect of the present invention, two connecting half-pipes are provided on the side of the exhaust pipe, wherein two first mounting seats are fixedly provided on the side of one of the connecting half-pipes, and two second mounting seats are fixedly provided on the side of the other connecting half-pipe, and the first mounting seats and the second mounting seats can be unlocked or locked together to separate the two connecting half-pipes or to buckle and lock the two connecting half-pipes into a protective tube.

[0015] According to another aspect of the present invention, a first movable groove is formed inside the first mounting seat, a movable plate is provided inside the first movable groove, a limit block is fixedly provided on one side of the movable plate and a return spring is provided on the other side, and a movable plate is further connected to the one side of the movable plate;

[0016] A second movable groove and a limit groove are provided inside the second mounting seat. Pressing the movable plate can overcome the resistance of the return spring to drive the movable plate and the limit block to move in the pressing direction, and the first mounting seat and / or the second mounting seat can be further moved to make the limit block enter the second movable groove and reach the position of the limit groove. The movable plate is released and the limit block can be pushed into the limit groove under the action of the return spring to achieve locking.

[0017] The utility model has the following beneficial effects:

[0018] The utility model is an oxygen supply device for high-pressure oxygen therapy. Through design coordination, the forward and reverse motors rotate to drive the two pressure plates to move away from each other, and the mounting ring is placed inside the fixing ring. The forward and reverse motors reverse to drive the two pressure plates to move closer to each other, and the mounting ring is limited by the two pressure plates, so that the mounting ring and the fixing ring are fixed together, thereby fixing the exhaust pipe and the oxygen supply pipe together. When the oxygen supply pipe is used, the forward and reverse motors rotate to drive the two pressure plates to move away from each other. At this time, the mounting ring loses its limit and can be directly taken out, so that the oxygen supply pipe can be directly taken out, thereby making it easy for the device to automatically adjust the two pressure plates to move closer and farther away from each other, making it more labor-saving to disassemble and assemble the oxygen supply pipe, thereby improving the disassembly and assembly efficiency of the oxygen supply pipe, thereby improving the portability of the device.

[0019] The utility model is an oxygen supply device for high-pressure oxygen therapy. When the oxygen supply pipe or the exhaust pipe is bent, the bent part of the oxygen supply pipe or the exhaust pipe is straightened, the two connecting half pipes are sleeved on the bent part of the oxygen supply pipe or the exhaust pipe, and the two movable plates are pressed, thereby driving the two movable plates to move closer to each other, thereby driving the two limit blocks to move closer to each other, fitting the first mounting seat and the second mounting seat together, so that the limit block enters the interior of the second mounting seat, loosening the movable plate, and squeezing the movable plate by the reset spring, thereby driving the two movable plates to move closer to each other. The movable plates move away from each other, thereby driving the two limit blocks to move away from each other, so that the limit blocks enter the limit grooves, thereby limiting the limit blocks, thereby limiting the movable plate and the movable plate, thereby fixing the first mounting seat and the second mounting seat together, thereby fixing the two connecting half-tubes together, and limiting the bending part of the oxygen supply pipe or the exhaust pipe through the two connecting half-tubes, so that the bending part of the oxygen supply pipe or the exhaust pipe cannot be bent after being straightened, thereby improving the smoothness of the oxygen supply pipe or the exhaust pipe when in use, thereby improving the oxygen supply efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an oxygen supply device for hyperbaric oxygen therapy according to a preferred embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the pressure plate installation structure of the oxygen supply device for hyperbaric oxygen therapy of the present invention;

[0022] Figure 3 This is a schematic diagram of the explosion structure of the fixing ring of the oxygen supply device for hyperbaric oxygen therapy of the utility model;

[0023] Figure 4 This is a schematic diagram of the buckled connection state of the connecting half-tube of the oxygen supply device for hyperbaric oxygen therapy of the utility model;

[0024] Figure 5 for Figure 4 Schematic diagram of the lower half of the connecting half pipe after it is cut off from the middle (separated state);

[0025] Figure 6 for Figure 5 Schematic diagram of the lower half of the connecting half pipe in a buckled connection state.

[0026] Legend:

[0027] 1. Hyperbaric oxygen box; 2. Air valve; 3. Exhaust pipe; 4. Fixing ring; 5. Pressure plate; 6. Fixing seat; 7. Connecting seat; 8. Bidirectional threaded rod; 9. Limit rod; 10. Forward and reverse motor; 11. Limiting ring; 12. Mounting ring; 13. Oxygen supply pipe; 14. First sealing gasket; 15. Second sealing gasket; 16. Connecting half pipe; 17. First mounting seat; 18. Second mounting seat; Second movable groove 181; 19. Movable plate; 20. Limiting block; 21. Moving plate; 22. Reset spring. DETAILED DESCRIPTION

[0028] Example 1

[0029] See also Figure 1-6 According to a preferred embodiment of the present invention, an oxygen supply device for hyperbaric oxygen therapy is provided, which is characterized by comprising: According to a preferred embodiment of the present invention,

[0030] A high-pressure oxygen box 1, with an air valve 2 fixed on the side;

[0031] an exhaust pipe 3, a first end of which is connected to the air valve; and

[0032] a fixing ring 4 connected to the second end of the exhaust pipe;

[0033] Among them, a first movable groove is respectively opened on both sides of the fixing ring 4, and an arc-shaped pressure plate 5 is provided inside the first movable groove. Both ends of the arc-shaped pressure plate 5 are fixed with a first fixed seat 6, and the fixing ring 4 is correspondingly provided with four connecting seats 7 corresponding to the first fixed seat one by one, and a spacing adjustment mechanism is connected between two adjacent connecting seats 7 of one group, and the spacing adjustment mechanism is a bidirectional threaded rod 8, and a limiting rod 9 is provided between two adjacent connecting seats 7 of another group, and the two ends of the bidirectional threaded rod are respectively connected to the two adjacent first fixed seats and used to adjust the distance between the two arc pressure plates, and one end of the bidirectional threaded rod 8 is provided with a forward and reverse motor 10, and the two ends of the limiting rod 9 are respectively connected to the two adjacent fixed seats 6, and a limiting ring 11 is fixed inside the fixing ring 4, and a mounting ring 12 is provided between the limiting ring 11 and the fixing ring, and the top of the mounting ring 12 is connected to the oxygen supply pipe 13.

[0034] According to another preferred embodiment of the present invention, the forward and reverse motor is used to rotate the bidirectional threaded rod to adjust the distance between the two arc-shaped pressure plates.

[0035] According to another preferred embodiment of the present invention, first sealing gaskets 14 are fixedly provided on the inner sides of the two arc-shaped pressure plates 5 , and the inner sides of the two first sealing gaskets 14 are in contact with the side surfaces of the mounting ring 12 .

[0036] According to another preferred embodiment of the present invention, a second sealing gasket 15 is fixedly provided on the side of the limiting ring 11, and the side of the second sealing gasket 15 is in contact with the inner side of the mounting ring 12, and the second sealing gasket is squeezed between the limiting ring and the mounting ring.

[0037] According to another preferred embodiment of the present invention, two connecting half-tubes 16 are provided on the side of the exhaust pipe 3. Two first mounting brackets 17 are fixedly provided on the side of one connecting half-tube 16, and two second mounting brackets 18 are fixedly provided on the side of the other connecting half-tube 16. The first mounting brackets and the second mounting brackets can be unlocked or locked together to separate the two connecting half-tubes or to fasten and lock the two connecting half-tubes into a protective tube. It is understood that the connecting half-tube 16 refers to a semicircular member, and the two semicircular members can be fastened and locked together to form a tube body / protective tube.

[0038] According to another preferred embodiment of the present invention, a first movable groove is formed inside the first mounting seat 17, and a movable plate 19 is provided inside the first movable groove. A limit block 20 is fixedly provided on one side of the movable plate 19 and a return spring is provided on the other side. A movable plate is further connected to the one side of the movable plate 19.

[0039] A second movable groove and a limit groove are provided inside the second mounting seat 18. Pressing the movable plate can overcome the resistance of the reset spring to drive the movable plate and the limit block to move in the pressing direction, and the first mounting seat and / or the second mounting seat can be further moved to make the limit block enter the second movable groove and reach the position of the limit groove. The movable plate is released and the limit block can be pushed into the limit groove under the action of the reset spring to achieve locking.

[0040] Example 2

[0041] Reference Figure 1-6The utility model also provides an oxygen supply device for hyperbaric oxygen therapy: it includes a hyperbaric oxygen box 1, a gas valve 2 is fixedly provided on the side of the hyperbaric oxygen box 1, an exhaust pipe 3 is fixedly provided on one side of the gas valve 2, a fixing ring 4 is fixedly provided on the top of the exhaust pipe 3, the fixing ring 4 is convenient for limiting the connection seat 7, two movable grooves are provided on the side of the fixing ring 4, and pressure plates 5 are provided inside the two movable grooves. The pressure plates 5 are convenient for limiting the installation ring 12, so that the exhaust pipe 3 and the oxygen supply pipe 13 are fixed together, two fixing seats 6 are fixed on the sides of the two pressure plates 5, and the fixing seats 6 are convenient for driving the pressure plates 5 to move. Four connecting seats 7 are fixed on the side of the fixing ring 4 A bidirectional threaded rod 8 is rotatably connected between the two connecting seats 7, and the bidirectional threaded rod 8 is convenient for driving the two pressure plates 5 to move closer to or away from each other. A limiting rod 9 is fixed between the other two connecting seats 7. The limiting rod 9 is convenient for improving the stability of the pressure plate 5 when moving. The side surfaces of the bidirectional threaded rod 8 are respectively connected to the internal threads of two of the fixed seats 6. One end of the bidirectional threaded rod 8 is provided with a forward and reverse motor 10. The side surfaces of the limiting rod 9 are respectively slidably connected to the inside of the other two fixed seats 6. A limiting ring 11 is fixed to the bottom end of the inside of the fixing ring 4, and a mounting ring 12 is provided on the side of the limiting ring 11. An oxygen supply tube 13 is fixed to the top of the mounting ring 12.

[0042] As a further implementation plan of the above technical solution: the side of the forward and reverse motor 10 is fixedly connected to one side of the corresponding connecting seat 7, and one end of the transmission shaft of the forward and reverse motor 10 is fixedly connected to one end of the bidirectional threaded rod 8, so that the forward and reverse motor 10 can easily drive the bidirectional threaded rod 8 to rotate.

[0043] As a further implementation plan of the above technical solution: a first sealing gasket 14 is fixed on the inner side of the two pressure plates 5, and the inner sides of the two first sealing gaskets 14 are in contact with the side of the mounting ring 12. The first sealing gasket 14 facilitates improving the sealing performance of the connection between the mounting ring 12 and the fixing ring 4.

[0044] As a further implementation scheme of the above technical solution: a second sealing gasket 15 is fixedly provided on the side of the limiting ring 11, and the side of the second sealing gasket 15 fits with the inner side of the mounting ring 12. The second sealing gasket 15 facilitates improving the sealing performance of the connection between the limiting ring 11 and the mounting ring 12.

[0045] During specific implementation: one end of the oxygen supply tube 13 is connected to the oxygen supply mask. When the oxygen supply mask needs to be used to supply oxygen, the forward and reverse motor 10 is started to rotate, thereby driving the two-way threaded rod 8 to rotate, thereby driving the four fixing seats 6 to move away from each other, thereby driving the two pressure plates 5 to move away from each other, and placing the mounting ring 12 inside the fixing ring 4. The sealing performance of the connection between the limiting ring 11 and the mounting ring 12 is improved by the second anti-slip pad. The forward and reverse motor 10 is started to reverse, thereby driving the two-way threaded rod 8 to reverse, thereby driving the four fixing seats 6 to move closer to each other, thereby driving the two pressure plates 5 to move closer to each other, and limiting the mounting ring 12 by the two pressure plates 5. The sealing performance of the connection between the pressure plate 5, the fixing ring 4 and the mounting ring 12 is improved by the first sealing gasket 14, so that the mounting ring 12 and the fixing ring 4 are fixed together, and the air valve 2 is opened to allow the high-pressure oxygen in the hyperbaric oxygen box 1 to pass. The air is fed into the oxygen supply mask through the exhaust pipe 3 and the oxygen supply pipe 13 for the patient to inhale oxygen. The exhaust pipe 3 is a flexible pipe, which is convenient for adjusting the position of the exhaust pipe 3 to avoid affecting the patient's activities. When the oxygen supply mask is used, the air valve 2 is closed and the forward and reverse motor 10 is started to rotate, thereby driving the two-way threaded rod 8 to rotate, thereby driving the four fixing seats 6 to move away from each other, thereby driving the two pressing plates 5 to move away from each other. At this time, the mounting ring 12 loses its limit and can be directly taken out, so that the oxygen supply pipe 13 can be directly removed, thereby completing the disassembly of the oxygen supply mask. The whole process only requires moving the mounting ring 12, thereby saving time and manpower, and facilitating the disassembly efficiency of the oxygen supply pipe 13, so that the device is easy to automatically adjust the two pressing plates 5 to move closer to or farther away from each other, making it more labor-saving to disassemble and assemble the oxygen supply pipe 13, thereby improving the disassembly efficiency of the oxygen supply pipe 13, thereby improving the portability of the device.

[0046] As a further implementation scheme of the above technical solution: two connecting half-pipes 16 are provided on the side of the exhaust pipe 3, wherein two first mounting seats 17 are fixedly provided on the side of one connecting half-pipe 16, and two second mounting seats 18 are fixed on the side of the other connecting half-pipe 16. The first mounting seat 17 facilitates limiting the movable plate 19.

[0047] As a further implementation plan of the above technical solution: a first movable groove is provided inside the two first mounting seats 17, a movable plate 19 is provided inside the two first movable grooves, a limit block 20 is fixed on one side of the two movable plates 19, a second movable groove 181 is provided inside the two second mounting seats 18, the interiors of the two second movable grooves are respectively fitted with the side surfaces of the two movable plates 19, and a limiting groove is provided inside the two second mounting seats 18, the interiors of the two limiting grooves are respectively fitted with the side surfaces of the two limit blocks 20, and the movable plate 19 facilitates driving the limit blocks 20 to move.

[0048] As a further implementation plan of the above technical solution: a movable groove is opened on one side of the two first mounting seats 17, and a movable plate 21 is provided inside the two movable grooves. One side of the two movable plates 21 is fixedly connected to one side of the two movable plates 19 respectively, and the movable plate 21 facilitates the movement of the movable plate 19.

[0049] As a further implementation plan of the above technical solution: a number of return springs 22 are fixedly provided on the other side of the two movable plates 19, and one side of the return springs 22 is fixedly connected to the interior of the two first mounting seats 17 respectively. The return springs 22 facilitate squeezing the movable plate 19 and the limit block 20 to prevent the limit block 20 from moving out of the limit groove.

[0050] When the oxygen supply pipe 13 or the exhaust pipe 3 is bent, the oxygen supply pipe 13 or the exhaust pipe 3 is straightened, the two connecting half pipes 16 are buckled at the bent part of the oxygen supply pipe 13 or the exhaust pipe 3, and the movable plate 21 is pressed, thereby pushing the movable plate 19 and the limit block 20 connected thereto to move radially along the oxygen supply pipe 13 (moving toward the outer surface of the connecting half pipe), and keeping the movable plate 21 pressed, the limit block 20 can be moved to the corresponding position of the second movable groove 181 in the second mounting seat 18, and then the movable plate 21 is released. Under the action of the restoring force of the spring 22, the limit block 20 can be pushed into the second movable groove 181 to achieve locking, otherwise it can be unlocked. Similarly, the limit block 20 on the other side of the two connecting half-tubes 16 can be locked into the second movable groove 181, so that the two connecting half-tubes 16 are buckled and fixed together to form a protective tube, so that the bending part of the oxygen supply tube 13 or the exhaust pipe 3 cannot be bent after being straightened, thereby improving the smoothness of the oxygen supply tube 13 or the exhaust pipe 3 during use, thereby improving the oxygen supply efficiency of the device.

[0051] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An oxygen supply device for hyperbaric oxygen therapy, characterized in that include: A high-pressure oxygen box (1) has an air valve (2) fixedly provided on the side; An exhaust pipe (3), a first end of which is connected to the air valve; as well as a fixing ring (4) connected to the second end of the exhaust pipe; Wherein, a first movable groove is respectively provided on both sides of the fixing ring (4), an arc-shaped pressure plate (5) is provided inside the first movable groove, and a first fixed seat (6) is fixed at both ends of the arc-shaped pressure plate (5), and the fixing ring (4) is correspondingly provided with four connecting seats (7) corresponding to the first fixed seats, wherein a spacing adjustment mechanism is connected between two adjacent connecting seats (7) in one group, and the spacing adjustment mechanism is a bidirectional threaded rod (8), and a limiting rod (9) is provided between two adjacent connecting seats (7) in another group, and the two ends of the bidirectional threaded rod are respectively connected to the two adjacent first fixed seats and used to adjust the distance between the two arc-shaped pressure plates, one end of the bidirectional threaded rod (8) is provided with a forward and reverse motor (10), and the two ends of the limiting rod (9) are respectively connected to the two adjacent fixed seats (6), and a fixed limiting ring (11) is sleeved inside the fixing ring (4), and a mounting ring (12) is sleeved between the limiting ring (11) and the fixing ring, and the top of the mounting ring (12) is connected to the oxygen supply pipe (13).

2. The oxygen supply device for hyperbaric oxygen therapy according to claim 1, characterized in that: The forward and reverse motor is used to rotate the bidirectional threaded rod to adjust the distance between the two arc-shaped pressing plates.

3. An oxygen supply device for hyperbaric oxygen therapy according to claim 1 or 2, characterized in that: The inner sides of the two arc-shaped pressure plates (5) are fixed with first sealing gaskets (14), and the inner sides of the two first sealing gaskets (14) are in contact with the side surfaces of the mounting ring (12).

4. The oxygen supply device for hyperbaric oxygen therapy according to claim 3, characterized in that: A second sealing gasket (15) is fixedly provided on the side of the limiting ring (11), the side of the second sealing gasket (15) is in contact with the inner side of the mounting ring (12), and the second sealing gasket is squeezed between the limiting ring and the mounting ring.

5. The oxygen supply device for hyperbaric oxygen therapy according to claim 1, characterized in that: Two connecting half-pipes (16) are provided on the side of the exhaust pipe (3), wherein two first mounting seats (17) are fixedly provided on the side of one of the connecting half-pipes (16), and two second mounting seats (18) are fixedly provided on the side of the other connecting half-pipe (16), and the first mounting seats and the second mounting seats can be unlocked or locked together to separate the two connecting half-pipes or to buckle and lock the two connecting half-pipes into a protective pipe.

6. The oxygen supply device for hyperbaric oxygen therapy according to claim 5, characterized in that: A first movable groove is provided inside the first mounting seat (17), a movable plate (19) is provided inside the first movable groove, a limit block (20) is fixedly provided on one side of the movable plate (19) and a return spring is provided on the other side, and a movable plate is further connected to the one side of the movable plate (19); A second movable groove and a limiting groove are provided inside the second mounting seat (18). Pressing the movable plate can overcome the resistance of the reset spring to drive the movable plate and the limiting block to move together in the pressing direction, and the first mounting seat and / or the second mounting seat can be further moved to allow the limiting block to enter the second movable groove and reach the position of the limiting groove. The movable plate is released and the limiting block can be pushed into the limiting groove under the action of the reset spring to achieve locking.

Images