Ventilation switching structure of negative pressure regulator

Abstract

The invention relates to a ventilation switching structure of a negative pressure regulator. The ventilation switching structure comprises a valve body, a switching cylinder and a knob. The valve body comprises a containing groove, a main pipe and a pair of branch pipes, the main pipe is connected with the negative pressure instrument and the containing groove, and the branch pipes are located on the two sides of the main pipe. The switching cylinder is rotatably arranged in the containing groove and comprises a main channel, a plurality of side channels and a blocking wall, and the side channels are communicated with the main channel and arranged on one side of the blocking wall at intervals. The knob is combined on the switching cylinder and drives the switching cylinder to rotate so that the blocking wall can selectively block one branch pipe, and therefore the purpose of ventilation switching is achieved.

Description

Technical Field

[0001] The invention relates to a negative pressure regulator, and in particular to a ventilation switching structure of the negative pressure regulator. Background Art

[0002] A negative pressure device is a device commonly used in treatment and medical care. It attracts and stimulates acupuncture points on the skin surface through negative pressure to promote blood circulation and relieve discomfort, so as to achieve the purpose of regulating body functions.

[0003] Generally, when using a negative pressure meter, a negative pressure regulator is used to adjust the pressure. In addition, the negative pressure regulator is usually provided with multiple branch pipes to connect multiple negative pressure cups. However, when only one negative pressure cup is used, the branch pipe that is not connected to the negative pressure cup needs to be sealed with a plug cap. This leads to inconvenience in use. Furthermore, if the plug cap does not completely seal the branch pipe, it is easy to cause gas leakage and affect use.

[0004] In view of this, the inventor has devoted himself to studying the above-mentioned prior art and has applied theoretical knowledge to try his best to solve the above-mentioned problems, which has become the goal of the inventor's improvement. Summary of the invention

[0005] One purpose of the present invention is to provide a ventilation switching structure of a negative pressure regulator, wherein a knob drives a switching cylinder to rotate so that a baffle wall can selectively block one of the branch pipes, thereby achieving the purpose of ventilation switching.

[0006] In order to achieve the above-mentioned purpose, the present invention is a ventilation switching structure of a negative pressure regulator, which is used to connect a negative pressure meter, and includes a valve body, a switching cylinder and a knob. The valve body includes a container, a main pipe and a pair of branch pipes. The main pipe is used to connect the negative pressure meter and the container, and the pair of branch pipes are correspondingly located on both sides of the main pipe. The switching cylinder is rotatably arranged in the container and includes a main channel, a plurality of side channels and a baffle wall. The plurality of side channels are connected to the main channel and are spaced apart on one side of the baffle wall. The knob is combined with the switching cylinder, and the knob drives the switching cylinder to rotate so that the baffle wall can selectively block one of the branch pipes.

[0007] In one embodiment of the present invention, the valve body is provided with a pair of limiting grooves on the bottom side of the containing groove, the pair of limiting grooves are arranged at intervals on the top edge of the main pipe, and each limiting groove is arranged as an arc groove and has an arc angle less than 180 degrees.

[0008] In one embodiment of the present invention, the switching cylinder includes a pair of hooks, which are located at opposite sides of the main channel and are respectively locked in the pair of limiting grooves.

[0009] In one embodiment of the present invention, a flange is formed on one side of each limiting groove of the valve body, and each hook is buckled on the flange.

[0010] In one embodiment of the present invention, each side channel is fan-shaped and slotted, and the switching cylinder is formed with partitions between adjacent side channels.

[0011] In one embodiment of the present invention, the ventilation switching structure further includes an airtight ring, and the switching cylinder is provided with an annular groove on the periphery of the plurality of side channels. The airtight ring is arranged in the annular groove and abuts against the inner wall surface of the containing groove.

[0012] In one embodiment of the present invention, the annular groove is an elliptical groove.

[0013] In one embodiment of the present invention, the valve body is provided with a plurality of vent holes, and the plurality of vent holes are arranged on the inner wall of the container and corresponding to the positions of the pair of branch pipes.

[0014] In one embodiment of the present invention, the plurality of vent holes are arranged in pairs at the locations where the branch pipes are connected to the receiving grooves, and the valve body is formed with blocking sheets between adjacent vent holes.

[0015] In one embodiment of the present invention, the ventilation switching structure further includes a gasket. A groove is disposed on a side of the switching cylinder facing the main pipe. The gasket is disposed in the groove and abuts against the top surface of the main pipe.

[0016] Compared with the known technology, the ventilation switching structure of the negative pressure regulator of the present invention includes a valve body, a switching cylinder and a knob. The switching cylinder is rotatably arranged in the valve body and includes a main channel, several side channels and a baffle wall. The several side channels are connected to the main channel and are arranged at intervals on one side of the baffle wall. The knob drives the switching cylinder to rotate so that the baffle wall can selectively block one of the branch pipes, thereby achieving the purpose of ventilation switching. Therefore, the process of using a plug cover to seal the unused branch pipe when the known negative pressure regulator uses a negative pressure cup can be omitted, thereby increasing the convenience and practicality of the ventilation switching structure of the negative pressure regulator of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the application of the ventilation switching structure of the negative pressure regulator of the present invention.

[0018] Figure 2 It is a three-dimensional appearance schematic diagram of the ventilation switching structure of the negative pressure regulator of the present invention.

[0019] Figure 3 It is a schematic diagram of the decomposition of the ventilation switching structure of the negative pressure regulator of the present invention.

[0020] Figure 4 It is a combined cross-sectional view of the ventilation switching structure of the negative pressure regulator of the present invention.

[0021] Figure 5 It is a cross-sectional schematic diagram of the hook of the switching cylinder in the present invention extending into the limiting groove of the valve body.

[0022] Figure 6 It is a combined cross-sectional view of the switching cylinder in the present invention being arranged in the receiving groove.

[0023] Figures 7 to 9 It is a schematic diagram of different cross-sectional views of the same state of rotation of the knob in the present invention.

[0024] Explanation of symbols in the accompanying drawings:

[0025] 1: Negative pressure regulator;

[0026] 2: Negative pressure instrument;

[0027] 3: Negative pressure cup;

[0028] 3a: first negative pressure cup;

[0029] 3b: second negative pressure cup;

[0030] 10: valve body;

[0031] 11: container;

[0032] 111: limiting slot;

[0033] 112: flange;

[0034] 12: Supervisor;

[0035] 13: In charge;

[0036] 14: vent;

[0037] 15: baffle;

[0038] 20: Switching cylinder;

[0039] 200: groove;

[0040] 21: Main channel;

[0041] 22: side channel;

[0042] 220: annular groove;

[0043] 23: retaining wall;

[0044] 24: partition;

[0045] 25: Hook;

[0046] 30: knob;

[0047] 40: airtight ring;

[0048] 50: Washer. DETAILED DESCRIPTION

[0049] The detailed description and technical contents of the present invention are described as follows with reference to the accompanying drawings. However, the accompanying drawings are only provided for reference and description and are not intended to limit the present invention.

[0050] Please refer to Figure 1 , is an application schematic diagram of the negative pressure regulator of the present invention. The negative pressure regulator 1 of the present invention is arranged between a negative pressure meter 2 and a plurality of negative pressure cups 3. In the present embodiment, the negative pressure cups 3 include a first negative pressure cup 3a and a second negative pressure cup 3b. In addition, the negative pressure regulator 1 is provided with a ventilation switching structure for connecting the negative pressure meter 2 and the negative pressure cups 3. The present invention can be switched through the ventilation switching structure to select the use of the first negative pressure cup 3a, the second negative pressure cup 3b, or the first negative pressure cup 3a and the second negative pressure cup 3b at the same time.

[0051] Please refer to Figures 2 to 4 , which are a three-dimensional appearance schematic diagram, an exploded schematic diagram and a combined cross-sectional view of the ventilation switching structure of the negative pressure regulator of the present invention. The present invention is a ventilation switching structure of a negative pressure regulator 1, comprising a valve body 10, a switching cylinder 20 and a knob 30. The switching cylinder 20 is placed in the valve body 10. The knob 30 is combined with the switching cylinder 20 and can drive the switching cylinder 20 to rotate.

[0052] The valve body 10 includes a container 11, a main pipe 12 and a pair of branch pipes 13. The main pipe 12 is used to connect the negative pressure instrument 2 (see Figure 1 ) and connected to the container 11. The pair of branch pipes 13 are used to connect the negative pressure cups 3 (see Figure 1 ), and are correspondingly located on both sides of the main pipe 12.

[0053] Specifically, the valve body 10 is provided with a pair of limiting grooves 111 on the bottom side of the container 11. The pair of limiting grooves 111 are respectively located at one side of the pair of branch pipes 13. In addition, the valve body 10 is provided with a plurality of vents 14. The vents 14 are arranged on the inner wall of the container 11 and are arranged corresponding to the positions of the pair of branch pipes 13. Specifically, the vents 14 are arranged in pairs at the places where each branch pipe 13 connects to the container 11, and the valve body 10 is formed with a baffle 15 between adjacent vents 14. The baffle 15 can be used to prevent foreign matter from entering and increase the structural strength of the container 11.

[0054] The switching cylinder 20 is rotatably disposed in the receiving groove 11 and includes a main channel 21, a plurality of side channels 22 and a blocking wall 23. The side channels 22 are connected to the main channel 21 and are spaced apart on one side of the blocking wall 23. Furthermore, the knob 30 is coupled to the switching cylinder 20. The knob 30 drives the switching cylinder 20 to rotate so that the blocking wall 23 can selectively cover one of the branch pipes 13.

[0055] In this embodiment, each side channel 22 is a fan-shaped slot, and the switching cylinder 20 is formed with a partition 24 between adjacent side channels 22. In addition, the switching cylinder 20 includes a pair of hooks 25. The pair of hooks 25 are located on opposite sides of the main channel 21 and are respectively locked in the pair of limiting grooves 111. Preferably, the valve body 10 is formed with a flange 112 on one side of each limiting groove 111. Each hook 25 is locked on the flange 112.

[0056] In one embodiment of the present invention, the ventilation switching structure of the negative pressure regulator 1 further includes an airtight ring 40. The switching cylinder 20 is provided with an annular groove 220 on the periphery of the side channels 22. The annular groove 220 is provided, for example, as an elliptical groove. The airtight ring 40 is provided in the annular groove 220 and abuts against the inner wall surface of the containing groove 11.

[0057] In addition, the ventilation switching structure of the negative pressure regulator 1 further includes a gasket 50. The switching cylinder 20 is provided with a groove 200 on a side facing the main pipe 12. The gasket 50 is disposed in the groove 200 and abuts against a top surface of the main pipe 12.

[0058] Please also refer to Figure 5 , is a cross-sectional schematic diagram of the hook of the switching cylinder in the present invention extending into the limiting groove of the valve body. The valve body 10 in the present invention is provided with a pair of limiting grooves 111. The pair of limiting grooves 111 are arranged at intervals on the top edge of the main pipe 12, and are respectively arranged as an arc groove with an arc angle slightly less than 180 degrees. Accordingly, when the switching cylinder 20 rotates relative to the valve body 10, the hook 25 of the switching cylinder 20 will move in the limiting groove 111, and the rotation angle of the switching cylinder 20 will be limited.

[0059] Please also refer to Figure 6 , is a combined cross-sectional view of the switching cylinder in the present invention placed in the receiving groove. The switching cylinder 20 includes a main channel 21, two side channels 22, a baffle 23 and a partition 24 for separating the side channels 22. Each side channel 22 is arranged in a fan shape and connected to the main channel 21. The baffle 23 is located on one side of the two side channels 22.

[0060] The valve body 10 includes a container 11, two branch pipes 13 and a plurality of vents 14. The switch cylinder 20 is rotatably disposed in the container 11. The switch cylinder 20 can select a rotation direction and a rotation angle, so that the baffle wall 23 is used to cover the vents 14 on one side, thereby supplying air to the branch pipes 13 on one side.

[0061] It should be noted that the switching cylinder 20 does not rotate but is located as shown in FIG. Figure 6 When the air is in the position, the baffle wall 23 does not cover any vent hole 14, and the branch pipes 13 on both sides are used for air supply at the same time.

[0062] Please refer to Figures 7 to 9 , which is a schematic diagram of different cross-sectional views of the same state of the knob rotation in the present invention. The ventilation switching structure of the negative pressure regulator 1 of the present invention can be used to switch ventilation by rotating the knob 30. When the knob 30 is rotated counterclockwise ( Figure 7 ), the pair of hooks 25 will move in the pair of limiting grooves 111; after the knob 30 is rotated to a certain angle, the pair of hooks 25 will be blocked by the edge of the limiting groove 111 and cannot rotate any further ( Figure 8 At this time, the barrier wall 23 will cover the vent hole 14 on the left, so that the branch pipe 13 on the right cannot be used; the gas will flow from the main channel 21 into the side channel 22, and then flow from the vent hole 14 on the right into the branch pipe 13 on the right, thereby performing ventilation switching.

[0063] Similarly, when the knob 30 is rotated clockwise, the baffle 23 will cover the right vent hole 14, thereby making the right branch pipe 13 unusable; the gas will flow from the main channel 21 into the side channel 22, and then flow from the left vent hole 14 into the left branch pipe 13, thereby achieving the purpose of ventilation switching.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent changes that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

Claims

1. A ventilation switching structure of a negative pressure regulator, used to connect a negative pressure meter, characterized in that: include: A valve body, comprising a container, a main pipe and a pair of branch pipes, the main pipe is used to connect the negative pressure instrument and the container, and the pair of branch pipes are correspondingly located on two sides of the main pipe; a switching cylinder rotatably disposed in the containing groove and comprising a main channel, a plurality of side channels and a baffle wall, wherein the plurality of side channels are connected to the main channel and are spaced apart on one side of the baffle wall; and A knob is combined with the switching cylinder, and the knob drives the switching cylinder to rotate so that the blocking wall can selectively cover one of the branch pipes.

2. The ventilation switching structure of the negative pressure regulator according to claim 1, characterized in that: The valve body is provided with a pair of limiting grooves on the bottom side of the containing groove, and the pair of limiting grooves are arranged at intervals on the top edge of the main pipe. Each limiting groove is configured as an arc groove and has an arc angle less than 180 degrees.

3. The ventilation switching structure of the negative pressure regulator according to claim 2, characterized in that: The switching cylinder includes a pair of hooks, which are located at opposite sides of the main channel and are respectively locked in the pair of limiting grooves.

4. The ventilation switching structure of the negative pressure regulator according to claim 3, characterized in that: The valve body is formed with a flange on one side of each limiting groove, and each hook is buckled on the flange.

5. The ventilation switching structure of the negative pressure regulator according to claim 1, characterized in that: Each side channel is a fan-shaped slot, and the switching cylinder is formed with a partition between adjacent side channels.

6. The ventilation switching structure of the negative pressure regulator according to claim 1, characterized in that: It further comprises an airtight ring. The switching cylinder is provided with an annular groove on the periphery of the plurality of side channels. The airtight ring is arranged in the annular groove and abuts against the inner wall surface of the containing groove.

7. The ventilation switching structure of the negative pressure regulator according to claim 6, characterized in that: The annular groove is an elliptical groove.

8. The ventilation switching structure of the negative pressure regulator according to claim 1, characterized in that: The valve body is provided with a plurality of vent holes, which are arranged on the inner wall of the container tank and corresponding to the positions of the branch pipes.

9. The ventilation switching structure of the negative pressure regulator according to claim 8, characterized in that: The plurality of vent holes are arranged in pairs at the places where each branch pipe is connected to the containing groove, and a blocking sheet is formed on the valve body between adjacent vent holes.

10. The ventilation switching structure of the negative pressure regulator according to claim 1, characterized in that: The invention further comprises a gasket. A concave groove is arranged on a side of the switching cylinder facing the main pipe. The gasket is arranged in the concave groove and abuts against a top surface of the main pipe.

Images