TWM649303U - Ventilation switching structure of negative pressure regulator - Google Patents

Abstract

This invention is a ventilation switching structure of a negative pressure regulator, including a valve body, a switching cylinder and a knob. The valve body includes a tank, a main pipe and branch pipes. The main pipe is connected to the negative pressure instrument and the tank, and the branch pipes are located on two sides of the main pipe. The switching cylinder is rotatably arranged in the groove and includes a main channel, a plurality of side channels and a baffle wall. The 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 barrel and drives the switching barrel to rotate so that the baffle wall selectively blocks one of the branch pipes, thereby achieving the purpose of ventilation switching.

Description

Ventilation switching structure of negative pressure regulator

This invention relates to a negative pressure regulator, in particular to a ventilation switching structure of a negative pressure regulator.

A negative pressure meter is a device commonly used for treatment and medical care. It uses negative pressure to attract and stimulate acupuncture points on the skin surface to promote blood circulation and relieve discomfort, so as to regulate body functions.

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 equipped 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 causes inconvenience in use. Furthermore, if the plug cap does not completely seal the branch pipe, it is easy to cause gas leakage and affect the use.

In view of this, the author has devoted himself to research on the above-mentioned existing technology and cooperated with the application of academic theory to try his best to solve the above-mentioned problems, which has become the goal of the author's improvement.

One purpose of this creation is to provide a ventilation switching structure of a negative pressure regulator, the knob of which drives the switching cylinder to rotate so that the baffle wall selectively blocks one of the branch pipes, thereby achieving the purpose of ventilation switching.

In order to achieve the above purpose, this invention is a ventilation switching structure of a negative pressure regulator, which is used to connect a negative pressure instrument, including a valve body, a switching cylinder and a knob. The valve body includes a tank, a main pipe and a For the branch pipes, the main pipe is used to connect the negative pressure instrument and the container. The pair of branch pipes are located on the two sides of the main pipe. The switching cylinder is rotatably arranged in the groove and includes a main channel, a plurality of side channels and a baffle wall. The 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 barrel, and the knob drives the switching barrel to rotate so that the blocking wall can selectively block one of the branch pipes.

In one embodiment of the present invention, the valve body is provided with a pair of limiting grooves on the bottom side of the receiving groove. The pair of limiting grooves are spaced at the top edge of the main pipe. Each limiting groove is configured as an arc-shaped groove and has an angle of less than 180 degree arc angle.

In one embodiment of the present invention, the switching barrel includes a pair of hooks, the pair of hooks are located on opposite sides of the main channel, and are respectively locked in the pair of limiting grooves.

In one embodiment of the present invention, the valve body is formed with a flange on one side of each limiting groove, and each hook is fastened to the flange.

In one embodiment of the present invention, each side channel is a fan-shaped slot, and the switching barrel is formed with a partition between adjacent side channels.

In one embodiment of the invention, the ventilation switching structure further includes an airtight ring. The switching barrel is provided with an annular groove around the side channels. The airtight ring is disposed in the annular groove and abuts against the inner wall of the groove.

In an embodiment of the present invention, the annular groove is an elliptical groove.

In one embodiment of the present invention, the valve body is provided with a plurality of vent holes. The vent holes are arranged on the inner wall of the tank and are arranged at positions corresponding to the branch pipes.

In one embodiment of the present invention, the vent holes are arranged in pairs where each branch pipe is connected to the receptacle, and the valve body is formed with a baffle between adjacent vent holes.

In one embodiment of the invention, the ventilation switching structure further includes a gasket. The switching barrel is provided with a groove on a side facing the main pipe. The gasket is disposed in the groove and contacts the top surface of the main pipe.

Compared with the prior art, the negative pressure regulator of this invention includes a valve body and a switching cylinder. The switching cylinder is rotatably installed in the valve body and includes a main channel, a plurality of side channels and blocking walls. The side channels are connected to the main channel and are separated from each other. Set on one side of the baffle wall, the knob drives the switching barrel to rotate so that the baffle wall selectively blocks one of the branch pipes, thereby achieving the purpose of ventilation switching. Therefore, it can save the need for a conventional negative pressure regulator when using a negative pressure cup. The process of sealing unused branch pipes with plug caps increases the convenience and practicality of the negative pressure regulator of the present invention.

1: Negative pressure regulator

2: Negative pressure meter

3: Negative pressure cup

3a: First negative pressure cup

3b: Second negative pressure cup

10: Valve body

11: Container

111: Limit slot

112:Flange

12:Supervisor

13: In charge

14:Vent hole

15:Block

20:Switch barrel

200:Gutter

21: Main channel

22:Side channel

220: Ring ditch

23: retaining wall

24:Partition

25: Hook

30: Knob

40: Airtight ring

50: Washer

Figure 1 is a schematic diagram of the application of the negative pressure regulator of this invention.

Figure 2 is a schematic diagram of the three-dimensional appearance of the negative pressure regulator of this invention.

Figure 3 is an exploded schematic diagram of the negative pressure regulator of this invention.

Figure 4 is a combined cross-sectional view of the negative pressure regulator of this invention.

Figure 5 is a schematic cross-sectional view of the switching barrel of the invention extending into the limiting groove of the valve body.

Figure 6 is a combined cross-sectional view of the switching barrel of the present invention placed in the container.

Figures 7 to 9 are schematic diagrams of the knob rotation of the negative pressure regulator of this invention.

The detailed description and technical content of this creation are described below with the accompanying drawings. However, the attached drawings are only for reference and illustration and are not used to limit this creation.

Please refer to Figure 1, which is a schematic diagram of the application of the negative pressure regulator of this invention. The negative pressure regulator 1 of this invention is arranged between a negative pressure instrument 2 and a plurality of negative pressure cups 3. In this 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 switch The structure is changed to connect the negative pressure instrument 2 and the negative pressure cups 3. In addition, this invention can be switched through the ventilation switching structure to selectively use the first negative pressure cup 3a, the second negative pressure cup 3b, or use the first negative pressure cup 3a and the second negative pressure cup 3b at the same time.

Please also refer to Figures 2 to 4, which are three-dimensional appearance diagrams, exploded diagrams and assembled cross-sectional views of the negative pressure regulator of this invention. This invention is a ventilation switching structure of a negative pressure regulator 1, which includes 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 barrel 20 and can drive the switching barrel 20 to rotate.

The valve body 10 includes a receiving tank 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 the container 11. The pair of branch pipes 13 are used to connect the negative pressure cups 3 (see FIG. 1 ), and are correspondingly located on two sides of the main pipe 12 .

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

The switching barrel 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 combined with the switching barrel 20 . The knob 30 drives the switching barrel 20 to rotate so that the blocking wall 23 selectively blocks one of the branch pipes 13 .

In this embodiment, each side channel 22 is a fan-shaped slot, and the switching barrel 20 is formed with a partition 24 between adjacent side channels 22 . In addition, the switching barrel 20 includes a pair of hooks 25 . The pair of cards hook 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 . In addition, each hook 25 is fastened to the flange 112 .

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

In addition, the ventilation switching structure of the negative pressure regulator 1 further includes a gasket 50 . In addition, the switching barrel 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 contacts a top surface of the main pipe 12 .

Please also refer to Figure 5, which is a schematic cross-sectional view of the hook of the switching barrel extending into the limiting groove of the valve body. The valve body 10 of the invention is provided with a pair of limiting grooves 111. The pair of limiting grooves 111 are spaced apart from each other on the top edge of the main pipe 12 , and are each configured as an arc-shaped groove with an arc angle slightly less than 180 degrees. Accordingly, when the switching barrel 20 rotates relative to the valve body 10, the hook 25 of the switching barrel 20 will move in the limiting groove 111, and the rotation angle of the switching barrel 20 will be limited.

Please also refer to Figure 6, which is a combined cross-sectional view of the switching tube of this invention placed in the container. The switching cylinder 20 includes a main channel 21 , two side channels 22 , a blocking wall 23 and a partition 24 for separating the side channels 22 . Each side channel 22 is arranged in a fan shape and communicates with the main channel 21 . The blocking wall 23 is located on one side of the two side channels 22 .

In addition, the valve body 10 includes a receiving tank 11, two branch pipes 13 and a plurality of vent holes 14. The switching barrel 20 is rotatably disposed in the receiving groove 11 . The switching barrel 20 can select the rotation direction and angle to use the blocking wall 23 to block the ventilation hole 14 on one side, thereby supplying air to the branch pipe 13 on one side.

It should be noted that when the switching barrel 20 is not rotating and is in the position as shown in FIG. 6 , the blocking wall 23 does not block any vent hole 14 , and the branch pipes 13 on both sides are used for air supply at the same time.

Please refer to Figures 7 to 9 again, which are schematic diagrams of the knob rotation of the negative pressure regulator of this invention. The negative pressure regulator 1 of this invention can switch ventilation by turning the knob 30 . When the knob 30 rotates counterclockwise (Fig. 7), the pair of hooks 25 will move in the pair of limiting grooves 111; and when the knob 30 rotates to a certain angle, the pair of hooks 25 will move It is blocked by the edge of the limiting groove 111 and cannot rotate anymore (Fig. 8). At this time, the blocking wall 23 will block the left vent hole 14, making the right branch pipe 13 unusable; in addition, the gas will flow from the main channel 21 into the side channel 22, and then flow from the right vent hole 14 into the right branch pipe 13 , thereby performing ventilation switching.

Similarly, when the knob 30 is rotated clockwise, the blocking wall 23 will cover the vent hole 14 on the right side, making the branch pipe 13 on the right unusable; in addition, the gas will flow from the main channel 21 into the side channel 22, and then from The ventilation hole 14 on the left flows into the branch pipe 13 on the left, thereby achieving the purpose of ventilation switching.

The above descriptions are only preferred embodiments of this invention and are not used to determine the patent scope of this invention. Other equivalent changes that apply the patent spirit of this invention should all fall within the patent scope of this invention.

1: Negative pressure regulator

10: Valve body

12:Supervisor

13: In charge

14:Vent hole

15:Block

20:Switch barrel

21: Main channel

22:Side channel

23: retaining wall

24:Partition

25: Hook

30: Knob

40: Airtight ring

Claims (10)

A ventilation switching structure of a negative pressure regulator, used to connect a negative pressure meter, including: a valve body, including 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 The pair of branch pipes are correspondingly located on two sides of the main pipe; a switching cylinder is rotatably arranged in the tank and includes a main channel, a plurality of side channels and a retaining wall. The side channels are connected to the main channel and Spacing is provided on one side of the blocking wall; and a knob is coupled to the switching barrel. The knob drives the switching barrel to rotate so that the blocking wall can selectively block one of the branch pipes. The ventilation switching structure of the negative pressure regulator as described in claim 1, wherein the valve body is provided with a pair of limit grooves on the bottom side of the container, and the pair of limit grooves are spaced at the top edge of the main pipe, and each limit The slot is configured as an arc-shaped slot and has an arc angle less than 180 degrees. The ventilation switching structure of the negative pressure regulator as described in claim 2, wherein the switching barrel includes a pair of hooks, the pair of hooks are located on opposite sides of the main channel and are respectively locked in the pair of limiting grooves . The ventilation switching structure of the negative pressure regulator as described in claim 3, wherein the valve body is formed with a flange on one side of each limiting groove, and each hook is buckled on the flange. The ventilation switching structure of the negative pressure regulator as described in claim 1, wherein each side channel is a fan-shaped slot, and the switching barrel is formed with a partition between adjacent side channels. The ventilation switching structure of the negative pressure regulator as described in claim 1 further includes an airtight ring. The switching barrel is provided with an annular groove around the side channels, and the airtight ring is disposed in the annular groove. And stick to the inner wall of the container. The ventilation switching structure of the negative pressure regulator as described in claim 6, wherein the annular groove is an elliptical groove. The ventilation switching structure of the negative pressure regulator as described in claim 1, wherein the valve body is provided with a plurality of ventilation holes, and the ventilation holes are arranged on the inner wall of the tank and are arranged at positions corresponding to the branch pipes. The ventilation switching structure of the negative pressure regulator as described in claim 8, wherein the ventilation holes are arranged in pairs where each branch pipe is connected to the container, and the valve body is formed with a block between adjacent ventilation holes. piece. The ventilation switching structure of the negative pressure regulator according to claim 1, further comprising a washer, the switching barrel is provided with a groove on a side facing the main pipe, the washer is arranged in the groove and contacts the main pipe of a top surface.

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