Pressure regulation device

Abstract

To provide a pressure regulation device capable of facilitating an installation work to an oxygen cylinder.SOLUTION: A pressure regulation device 100 is installed an oxygen cylinder B and regulates a first pressure of the oxygen gas discharged from the oxygen cylinder B to a second pressure for supply to a patient with respiratory disease. The pressure regulation device has a fixing nut 110 to be fixed to a cylinder mouthpiece B1 of the oxygen cylinder B. The fixing nut 110 has a female screw portion 111 that is screwed into the cylinder mouthpiece B1, and a mouth hole 112 that is formed from an open end to the female screw portion 111 and has a larger diameter than the female screw portion 111. The mouth hole 112 is prevented from falling off at a position where the female screw portion 111 abuts the cylinder mouthpiece B1. Since the fixing nut 110 can be rotationally operated with one hand while holding the oxygen cylinder B with the other hand even without holding the pressure regulation device 100 by the hands, a work for installing the pressure regulation device 100 to the oxygen cylinder B is facilitated.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a pressure regulating device that is attached to an oxygen cylinder and supplies oxygen from the oxygen cylinder to a patient suffering from respiratory disease. [Background technology]

[0002] A conventional pressure regulator that is attached to an oxygen cylinder and adjusts the high-pressure gas discharged from the oxygen cylinder is disclosed in JP 2019-217307 A. The pressure regulator disclosed in this document is configured so that when attached to an oxygen cylinder, the pressure regulator is held in one hand and a nut of the pressure regulator is rotated with the other hand to screw it onto the mouthpiece of the oxygen cylinder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-217307 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when attaching the above-mentioned conventional pressure regulator to an oxygen cylinder, the pressure regulator must be held with one hand and the nut of the pressure regulator must be turned with the other, which makes the oxygen cylinder prone to shaking. This means that another person is needed to fix the oxygen cylinder, or when installing alone, the pressure regulator must be clamped between the legs to fix it, making the installation of the pressure regulator to the oxygen cylinder complicated.

[0005] The present invention has been made in consideration of such problems, and its object is to provide a new and improved pressure regulating device that can be easily installed on an oxygen cylinder. [Means for solving the problem]

[0006] In order to solve the above problems, according to the present invention, there is provided a pressure regulating device that is attached to an oxygen cylinder and adjusts a first pressure of oxygen gas discharged from the oxygen cylinder to a second pressure for supplying it to a patient with respiratory disease, the pressure regulating device comprising a fixing nut that is fixed to a cylinder nozzle of the oxygen cylinder, the fixing nut having a female threaded portion that screws into the cylinder nozzle, and a mouth hole of a larger diameter than the female threaded portion that is formed from the open end to the female threaded portion, and the mouth hole is prevented from falling off at the position where the female threaded portion abuts the cylinder nozzle.

[0007] According to this configuration, the pressure regulator is temporarily fixed to the cylinder mouthpiece by the mouth hole to prevent it from falling off, so the fixing nut can be rotated even if the pressure regulator is not being held by hand. Therefore, while holding the oxygen cylinder with one hand, the fixing nut of the pressure regulator can be rotated with the other hand, making it easier to attach the pressure regulator to the oxygen cylinder.

[0008] The present invention can be applied in various ways. For example, the hole depth L of the mouth hole may be L>10t, where the diameter of the mouth hole-the outer diameter of the cylinder mouthpiece=t. With this configuration, the mouth hole is caught by the cylinder mouthpiece even if it is tilted. Therefore, it is possible to more reliably prevent the mouth hole from falling off the cylinder mouthpiece.

[0009] The peripheral surface of the mouth hole may be provided with one or more anti-slip portions. This configuration increases the frictional force of the mouth hole against the cylinder mouthpiece, thereby more reliably preventing the mouth hole from falling off the cylinder mouthpiece.

[0010] The non-slip portion may be one or more grooves formed on the peripheral surface of the mouth hole, and the grooves may be formed simultaneously with the peripheral surface of the mouth hole when the female screw portion is formed. Depending on the diameters of the female screw portion and the mouth hole, the grooves of the female screw portion and the mouth hole can be formed simultaneously, which provides good manufacturability. Effect of the Invention

[0011] According to the present invention, it is possible to provide a pressure adjusting device that can be easily attached to an oxygen cylinder. Other effects of the present invention will be described in the description of the embodiment of the invention below. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is an overall view showing a state in which the pressure adjusting device 100 is connected to an oxygen cylinder B. [Diagram 2] FIG. 2 is a perspective view showing the vicinity of the pressure adjusting device 100. [Diagram 3] 1A and 1B are diagrams for explaining a fixing nut 110, in which (a) is a perspective view and (b) is a cross-sectional view. [Figure 4] 1 is a cross-sectional view showing a state before the pressure adjusting device 100 is attached to an oxygen cylinder B. FIG. [Diagram 5] 13 is a cross-sectional view showing a state in which a mouth hole 112 is temporarily fixed to a mouthpiece B1. FIG. [Figure 6] 1 is a cross-sectional view showing a state in which the pressure adjusting device 100 is connected to an oxygen cylinder B. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this specification and the drawings, components having substantially the same functional configurations are designated by the same reference numerals, and duplicated explanations will be omitted.

[0014] An overview of a pressure regulating device 100 according to one embodiment of the present invention will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is an overall view showing a state in which the pressure regulating device 100 is connected to an oxygen cylinder B. Fig. 2 is a perspective view showing the vicinity of the pressure regulating device 100.

[0015] 1 and 2, the pressure adjustment device 100 is connected to the mouthpiece B1 at the top of the oxygen cylinder B. The pressure adjustment device 100 is attached to the oxygen cylinder B and adjusts a first pressure of oxygen gas discharged from the oxygen cylinder B to a second pressure for supplying the oxygen gas to a patient with a respiratory disease, and includes a fixing nut 110 fixed to the cylinder mouthpiece B1 of the oxygen cylinder B. Each component will be described in detail below.

[0016] The fixing nut 110, which is a characteristic configuration of this embodiment, will be described with reference to Figs. 2 to 4. Fig. 2 is a perspective view showing the vicinity of the pressure adjusting device 100. Fig. 3 is a diagram for explaining the fixing nut 110, (a) being a perspective view and (b) being a cross-sectional view. Fig. 4 is a cross-sectional view showing the state before the pressure adjusting device 100 is attached to the oxygen cylinder B. The fixing nut 110 is for fixing the pressure adjusting device 100 to the cylinder nozzle B1. As shown in Figs. 2 and 3, the fixing nut 110 has a female screw portion 111 that screws into the cylinder nozzle B1, and a mouth hole 112 that is formed from the open end to the female screw portion 111 and has a larger diameter than the female screw portion 111.

[0017] The diameter Da of the mouth hole 112 is larger than the outer diameter Db of the cylinder nozzle B1 as shown in FIG. 4. The diameter Da of the mouth hole 112 is smaller than the valley diameter Dc of the female thread portion 111 and larger than the crest diameter Dd of the female thread portion 111 as shown in FIG. 3(b). The mouth hole 112 is provided with a spiral filament 113 (groove as a slip prevention portion). The filament 113 of the mouth hole 112 is formed by inserting a tool into the fixing nut 110 from the mouth hole 112 when forming the female thread portion 111. Therefore, the mouth hole 112 can be formed with a diameter smaller than the valley diameter of the female thread portion 111 in the process of forming the female thread portion 111. Therefore, the fixing nut 110 has good manufacturability.

[0018] 4, the hole depth L of the mouth hole 112 is set to be L>10t, where Da is the diameter of the mouth hole 112 and Db is the outer diameter of the cylinder nozzle B1=t. In this embodiment, the filaments 113 of the mouth hole 112 are formed during the process of forming the female thread portion 111, but they may be formed separately. Furthermore, the diameters of the female thread portion 111 and the mouth hole 112 are not limited to those described above.

[0019] As shown in Figs. 2 to 4, a portion of the fixing nut 110 that closes the end opening on the opposite side of the mouth hole 112 in the axial direction is called the bottom 110a of the fixing nut 110. The tip of the cylinder mouthpiece B1 butts and comes into contact with the bottom 110a when the pressure regulating device 100 is connected to the oxygen cylinder B. An opening 114 is formed protruding from the center of the bottom 110a to communicate the cylinder mouthpiece B1 with the flow path 120 of the pressure regulating device 100. A grip portion 115 is provided on the outer periphery of the fixing nut 110 to be gripped when rotating the fixing nut 110. The grip portion 115 has anti-slip portions formed at equal intervals in the circumferential direction.

[0020] The configuration of the pressure adjusting device 100 has been described above. Below, the process of connecting the pressure adjusting device 100 to the oxygen cylinder B will be described with reference to Figs. 5 and 6. Fig. 5 is a cross-sectional view showing a state in which the mouth hole is temporarily attached to the mouthpiece B1. Fig. 6 is a cross-sectional view showing a state in which the pressure adjusting device 100 is connected to the oxygen cylinder B.

[0021] When connecting the pressure regulating device 100 to an oxygen cylinder B, hold the pressure regulating device 100 with one hand and the oxygen cylinder B with the other hand, and insert the cylinder mouthpiece B1 into the mouth hole 112 of the fixing nut 110 as shown in Fig. 5. Since the mouth hole 112 has a larger diameter than the cylinder mouthpiece B1, the cylinder mouthpiece B1 can be easily inserted by simply moving the mouth hole 112 in the axial direction of the cylinder mouthpiece B1.

[0022] When the cylinder nozzle B1 is inserted to a position where it abuts against the female screw portion 111, the mouth hole 112 will not fall off from the cylinder nozzle B1, and the pressure adjustment device 100 can be temporarily fixed to the cylinder nozzle B1. At this time, the line 113 formed on the peripheral surface of the mouth hole 112 increases the frictional force of the mouth hole 112 against the cylinder nozzle B1. This makes it possible to more reliably prevent the mouth hole 112 from falling off from the cylinder nozzle B1.

[0023] When the grip portion 115 is gripped and rotated, the cylinder nozzle B1 and the female thread portion 111 screw together, tightening the fixing nut 110. When the tip of the cylinder nozzle B1 comes into contact with the bottom portion 110a of the fixing nut 110 as shown in Fig. 6, the pressure adjustment device 100 and the cylinder nozzle B1 are connected.

[0024] (Effects of this embodiment) As described above, according to this embodiment, the pressure adjustment device 100 is temporarily fixed to the cylinder mouthpiece B1 by the mouth hole 112 to prevent it from falling off, so the fixing nut 110 can be rotated even if the pressure adjustment device 100 is not being held by hand. Therefore, while holding the oxygen cylinder B with one hand, the fixing nut 110 of the pressure adjustment device 100 can be rotated with the other hand, which makes it easier to attach the pressure adjustment device 100 to the oxygen cylinder B.

[0025] In addition, when the diameter Da of the mouth hole 112 - the outer diameter Db of the cylinder nozzle B1 = t, the hole depth L of the mouth hole 112 is L > 10t, so the inclination of the mouth hole 112 when temporarily fastened is small. Therefore, the force causing it to fall off the cylinder nozzle B1 is weak, and falling off can be more reliably prevented.

[0026] Furthermore, by forming the stripes 113 on the peripheral surface of the mouth hole 112, the frictional force of the mouth hole 112 against the cylinder mouthpiece B1 increases. This makes it possible to more reliably prevent the mouth hole 112 from falling off the cylinder mouthpiece B1.

[0027] Furthermore, since the filaments 113 are formed on the peripheral surface of the mouth hole 112 at the same time that the female screw portion 111 is formed, the female screw portion 111 and the filaments 113 can be formed simultaneously, resulting in good manufacturability.

[0028] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such an example. It is clear that a person skilled in the art can think of various modified or altered examples within the scope of the claims, and it is understood that such examples also naturally belong to the technical scope of the present invention.

[0029] For example, in the above embodiment, the hole depth L of the mouth hole 112 is configured to be L>10t when the diameter Da of the mouth hole 112-the outer diameter Db of the cylinder mouthpiece B1=t, but the present invention is not limited to this example. The mouth hole can be designed arbitrarily as long as it does not fall off the cylinder mouthpiece.

[0030] In the above embodiment, the stripes 113 are formed around the periphery of the mouth hole 112 as an example of an anti-slip portion, but the present invention is not limited to this example. Any design can be used as long as it functions as an anti-slip portion and does not cause the mouth hole to fall off the bottle mouthpiece. For example, an anti-slip agent may be applied, or one or more grooves, bumps, or a lattice pattern may be formed. On the other hand, in order to reduce costs, a smooth surface may be used without forming an anti-slip portion.

[0031] The above-described embodiments, applications, and modifications can be implemented in any combination. [Explanation of symbols]

[0032] 100 Pressure Regulating Device 110 Fixing nut 110a bottom 111 Female thread 112 Mouth hole 113 Line (groove) 114 Opening 115 Grip 120 Channel B. Oxygen cylinder B1 Base

Claims

1. A pressure regulating device attached to an oxygen cylinder, regulating a first pressure of oxygen gas discharged from the oxygen cylinder to a second pressure for supplying the oxygen gas to a patient with respiratory disease, It is equipped with a fixing nut that is fixed to the nozzle of the oxygen cylinder. the fixing nut has a female screw portion that screws onto the cylinder nozzle, and a mouth hole that is formed from an open end to the female screw portion and has a larger diameter than the female screw portion, A pressure regulating device characterized in that the diameter of the mouth hole is larger than the outer diameter of the cylinder nozzle, and the cylinder nozzle can be inserted into the mouth hole simply by moving the mouth hole in the axial direction of the cylinder nozzle.

2. The depth L of the mouth hole is: If the diameter of the nozzle hole - the outer diameter of the cylinder nozzle = t, L>10t The pressure regulating device according to claim 1 ,

3. The pressure adjusting device according to claim 1 or 2, wherein one or more anti-slip portions are provided on the peripheral surface of the opening hole.

4. The anti-slip portion is one or more grooves formed on the circumferential surface of the opening, 4. The pressure adjusting device according to claim 3, wherein the groove is formed on the circumferential surface of the mouth hole at the same time that the female screw portion is formed.

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