JPH0414718Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a small cylinder that can be connected to a regulator by housing a small cylinder with a small volume and a structure that seals the mouth without attaching a valve. This invention relates to an opening device for a cylinder holder.

``Prior art'' Conventionally, 100c.c. In the holder for a small cylinder, the regulator 1 is attached to one end of the holding cylinder 2 as shown in FIG. A cylinder guide 6 is provided inside the holding cylinder 2 and can be pushed toward the open part 8 of the holding cylinder 2 with a weak spring 7 while protruding from the center of the provided fitting guide opening 3.
A small cylinder 11 is attached to the cylinder guide 6 by allowing the cylinder guide 6 to slide freely, and having a shoulder portion engage with the circumferential edge engaging portion 5 at one end of the cylinder guide 6, and a sealing opening 25 protruding from one end of the cylinder guide 6. At the same time, the large-diameter pressing male screw body 27, which engages the rear end of the small cylinder 11 with the engagement recess 12, is screwed into the female screw portion 9 provided in the open portion 8 of the holding cylinder 2. , by screwing the pressing male screw body 27, the small cylinder 1
1, the opening 25 enters the fitting guide opening 3 of the holding cylinder 2, and the sealing plate 26 at the front end of the opening 25 is inserted into the cutting needle/air guiding tube section 4 of the regulator 1.
It is pushed off with the tip of the cylinder so that the tip faces into the mouth part 25 of the small cylinder 11, and is connected to the outlet part 24 of the regulator 1 which communicates with the small cylinder 11 via the cut end and air guide pipe part 4. Gas can be sent to required locations through a communication pipe (not shown).

``Problems to be solved by the invention'' The conventional holder for small cylinders of this type has a female screw part 9 provided in the open part 8 of the holding cylinder 2 as described above.
The small cylinder 11 is pressed by a large-diameter pressing male screw body 27 screwed into the cylinder so that the sealing plate 26 of the mouth part 25 of the small cylinder 11 is pushed off by the tip of the cutting needle and air guiding pipe part 4 of the regulator 1. Because of this, the repulsive force from the sealing plate 26 is applied to the large-diameter pressing male screw body 27 until the tip of the cutting needle/air guide tube part 4 comes into contact with the sealing plate 26 and presses the sealing plate 26 completely. Frictional resistance at the threaded joint between the male threaded body 27 and the female threaded part 9 of the holding cylinder 2 becomes extremely large, and opening the opening 25 of the small cylinder 11 is difficult unless a person has strong strength to overcome the large rotational torque. This creates a situation where weak nurses and other medical workers at hospitals and other medical facilities are confused about how to handle the situation.

The present invention was devised to solve the above-mentioned problems with the conventional holders for small cylinders. The object of the present invention is to provide an opening device for a holder for a small cylinder, which allows the sealing plate at the mouth to be easily pushed off.

"Means for Solving the Problems" The present invention takes the following means to achieve the above object.

First, screw the male screw tube connected to the rotation operation cap body through the ratchet mechanism into the female screw provided in the open part of the holding tube, and insert the rear end of the small cylinder into the engagement recess of the male screw tube. When engaged, the male screw cylinder is threaded through the rotary operation cap body, and the sealing plate of the mouth of the small cylinder is brought into contact with the tip of the cutting needle and air guiding pipe portion of the regulator attached to one end of the holding cylinder.

Next, with the male screw tube stopped, the small male screw shaft screwed into the center of the male screw tube is screwed through the rotary operation cap body, and the small male screw shaft presses the center of the rear end of the small cylinder. Then, the sealing plate at the opening was strongly pressed against the tip of the cutting needle and air guide tube of the regulator, and the tip of the cutting needle and air guide tube was forced to cut through the sealing plate.

``Function'' As mentioned above, the present invention allows the sealing plate at the front end of the mouth of the small cylinder to move until it comes into contact with the tip of the cutting needle and air guide tube of the regulator by screwing it into the female thread of the opening of the holding cylinder. Since the movement is carried out using a male threaded tube, the movement during this time is not affected by the repulsive effect of the sealing plate, and the contact resistance between the female threaded part of the holding cylinder and the male threaded tube is small, allowing the male screw tube to easily screw forward and move the regulator. It is possible to bring the tip of the cutting needle and air guide tube into contact with the sealing plate at the mouth of the small cylinder.

After the sealing plate at the mouth of the small cylinder comes into contact with the tip of the regulator's cutting needle and air guide tube,
With the male screw tube in a stopped state, screw the small male screw shaft into the center of the male screw tube with a large diameter rotary operation cap body, and attach the regulator's cut needle and air guide tube to the sealing plate at the mouth of the small cylinder. The screwing part of the male screw tube is designed so that the tip of the part is pressed hard and the sealing plate is pushed out, so the repulsive force from the sealing plate acts on the small male screw shaft and screws the small male screw shaft and the small male screw shaft together. Even if the contact resistance with the small male screw shaft increases, the small male screw shaft can be screwed by lightly turning the turning operation cap body due to the lever action of the rotating operation cap body against the small male screw shaft.

(Example) Next, an example of implementation of the present invention will be described in detail with reference to the drawings.

Holding cylinder body 2 with regulator 1 attached to one end
is formed, and the tip of the cutting needle/air guide tube portion 4 of the regulator 1 projects from the center of the fitting guide port portion 3 provided concentrically at one end of the holding cylinder 2.

A cylinder guide 6 having a peripheral engagement portion 5 at one end is slidably fitted into the holding cylinder 2 with a weak spring 7 interposed between it and the inner end of the holding cylinder 2. , and the open part 8 of the holding cylinder 2 has a female screw part 9.
is provided.

Further, a male screw tube 10 is formed to be screwed into the female screw portion 9, and the male screw tube 10 is provided with an engagement recess 12 for engaging the rear end of the small cylinder 11. On the outer circumferential surface of 13, an engagement step portion 14 is provided.
A wide pawl tooth portion 15 in the form of continuous additional teeth is formed.

At the center of the end portion 13 of the male screw tube 10, a rotary operation cap body 17 is provided which protrudes from the center and has an inner circumferential surface 16 having a larger diameter than the outer diameter of the claw tooth portion 15 of the male screw tube 10. A small male threaded shaft 18 is screwed together, and the front end 18' of the small male threaded shaft 18 is inserted into the engagement recess 1 of the male threaded cylinder 10.
An annular stopper 19 is fixed to the cylinder side screw portion end near the front end 18' of the small male screw shaft 18.

Then, turn the rotation operation cap body 17 to connect the small male screw shaft 1.
8 is screwed back, the rotation operation cap body 11 rotates relative to the male screw tube 10. Thereafter, when the annular stopper 19 comes into contact with the inner surface of the engagement recess 12 at the end of the threaded portion, the rotation operation cap body 1 continues to rotate.
The male screw tube 10 is configured to rotate together with the screw tube 7.

Further, the rotation operation cap body 17 is provided with a fitting hole 21 in the axial direction with an opening 20 in the middle of the inner circumferential surface 16, and inside the fitting hole 21 there is a small hole that can be adjusted in strength. An engaging sphere 23 pressed in the axial direction by a spring 22 is loosely fitted.

The engaging sphere 23 is opposed to the inner circumferential surface 16 of the rotary operation cap body 17 with a constant gap, with a spherical surface of 1/2 or less protruding from the opening 20 of the fitting hole 21. The end portion 13 of the male threaded tube 10 is always elastically engaged with one of the engagement step portions 14 of the claw tooth portion 15 in the form of continuous toothing, thereby forming a ratchet mechanism. This rotational resistance causes the engaging sphere 2
3, the male screw tube 10 is locked by the engagement sphere 23 that engages the engagement step portion 14 of the claw tooth portion 15, and the male screw tube 10 is rotated. When the rotational resistance applied to the male screw tube 10 becomes larger than the elastic force of the small spring 22 pressing the engagement sphere 23, the engagement sphere 23 engages against the small spring 22. The male threaded tube 10 crosses over the connecting step 14 and comes to a halt, and only the rotation operation cap body 17 rotates, and the small male screw shaft 18 of the rotation operation cap body 17 moves inside the engagement recess 12 of the male screw tube 10. Spiral.

In addition, contrary to the above, that is, the pawl tooth portion 1 of the male screw tube 10
By rotating the rotation operation cap body 17 in the opposite direction in which the engagement sphere 23 does not engage with the engagement step portion 14 of No. 5, first, only the rotation operation cap body 17 rotates and the small male screw is rotated. When the shaft 18 is screwed back, the annular stopper 19 comes into contact with the inner surface of the engagement recess 12 of the male screw tube 10, and the connection between the inner surface of the engagement recess 12 and the annular stopper 19 causes the male screw tube 10 and the rotation operation cap to be connected. Relative rotation with the body 11 is restricted so that the male screw tube 10 can be rotated integrally with the rotation operation cap body 17.

Incidentally, the reference numeral 24 in the drawings is the outlet portion of the regulator.

Since the present invention is constructed as described above, the small cylinder 11 is adapted to the cylinder guide 6 in the holding cylinder 2, the male screw cylinder 10 is screwed into the female thread part 9 of the holding cylinder 2, and the male screw When the rear end of the small cylinder 11 is engaged with the engagement recess 12 of the cylinder 10 and the rotation operation cap body 17 is rotated in the direction shown by the solid arrow in FIG. It is locked to the rotation operation cap body 17 via the engagement sphere 23 which is elastically engaged with the engagement step portion 14 of the pawl tooth portion 15 by the small spring 22, and is engaged with the rotation operation cap body 17 as the rotation operation cap body 17 rotates. The small cylinder 11 is moved forward, and the mouth part 2 of the small cylinder 11 is moved forward.
The tip of the cutting needle/air guiding tube part 4 of the regulator 1 attached to one end of the holding cylinder 2 is brought into contact with the sealing plate 26 that closes the front end of the holding cylinder 5.

After contacting the sealing plate 26, the rotary operation cap body 1
7 continues to rotate, the repulsive force from the sealing plate 26 acts on the male threaded tube 10, and the frictional resistance at the threaded joint between the male threaded tube 10 and the female threaded portion 9 of the holding tube 2 increases. When the rotational resistance applied to the male screw tube 10 becomes larger than the elastic force of the small spring 22 pressing the engagement sphere 23, the engagement sphere 23 resists the small spring 22 and pushes against the pawl tooth portion of the male screw tube 10. 15, the male screw tube 10 comes to a stopped state, and only the rotation operation cap body 17 rotates, and the small male screw shaft 18 of the rotation operation cap body 17 that is screwed into the male screw tube 10 rotates. As shown in FIGS. 1 and 2, the small cylinder 11 is screwed forward, and the rear end of the small cylinder 11 is pressed, the sealing plate 26 of the opening 25 of the small cylinder 11 is pushed out, and the seal is opened. The tip of the cylinder 4 enters the mouth 25 of the small cylinder 11, and the small cylinder 11 and the regulator 1 are brought into communication.

That is, in the present invention, after the tip of the cutting needle/air guide tube part 4 of the regulator 1 comes into contact with the sealing plate 26 that seals the front end of the mouth part 25 of the small cylinder 11 as described above, The large male screw tube 10 stops, and the small male screw shaft 18 screwed into the center of the male screw tube 10 is screwed forward by the force acting on the circumferential surface of the rotary operation cap body 17 that is far away from the outside. Since the rear end of the small cylinder 11 is pressed against the rear end of the small cylinder 11, even if the repulsive force from the sealing plate 26 is applied to the small male screw shaft 18 and the rotation resistance becomes large, the rotation with a large diameter difference with respect to the small male screw shaft 18 is The sealing plate 2 of the small cylinder 11 is turned by lightly rotating the rotary operation cap body 17 by the lever action of the movable operation cap body 17.
It is possible to push through 6.

Further, contrary to the above, by turning the rotation operation cap body 17 in the direction shown by the phantom line arrow in FIG.
The small male screw shaft 18 is rotated by rotating the rotary operation cap body 17 with the male screw tube 10 in a stopped state by disengaging the engaging sphere 23 attached to the rotation operation cap body 17. When it is screwed back and the annular stopper 19 of the small male screw shaft 18 comes into contact with the inner surface of the engagement recess 12 of the male screw tube 10, the male screw tube 10 and the rotation operation cap body 17 are screwed back.
are integrated and rotate together, and the male screw tube 10 is separated from the female screw portion 9 of the holding tube body 2. Thus, the positional relationship between the male screw tube 10 and the rotation operation cap body 17 is the same as that of the male screw tube. 10 from the female screw part 9 of the holding cylinder 2, it returns to its original state and becomes ready for the next use.

"Effects of the Invention" As described above, the present invention allows the opening 25 of the small cylinder 11 to be
The male screw tube 10 is screwed forward until the sealing plate 26 contacts the tip of the cutting needle/air guide tube section 4 of the regulator 1, and when the repulsive force of the sealing plate 26 acts, the male screw tube 10
The rotary operation cap body 1 has a small male screw shaft 18 that automatically stops and screws into the male screw tube 10 and has a large diameter difference.
7 to press the small cylinder 11, the rotary operation cap body 17 can be easily turned by the lever action against the small male screw shaft 18, making it easy for workers with weak strength in medical institutions and other facilities. Even a person can handle it smoothly and easily, and can quickly open the mouth of a small cylinder.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention.
The figure is a side view with a part cut away, and Figure 2 shows a partially cut away part of the open part of the holding cylinder, the male screw tube that screws into the open part, and the rotating operation cap body that connects to the male screw tube. It is an enlarged side view showing a state in which the small male screw shaft of the rotary operation cap body is screwed, FIG. 3 is a cross-sectional view taken along line A-A' of the same as above, and FIG. 4 is the rotary operation cap body. Fig. 5 is an enlarged side view with parts of the open part of the holding cylinder, the male screw cylinder, and the rotary operation cap body partially cut away, showing the state in which the small male screw shaft is screwed back. FIG. 3 is a cutaway side view. 1... Regulator, 2... Holding cylinder, 3...
…Fitting guide port portion, 4…Cut needle and air guide tube portion, 8
...Opening part, 9...Female screw part, 10...Male thread tube, 11...Small cylinder, 12...Engaging recess, 1
3... End portion, 14... Engagement step portion, 15... Claw tooth portion, 16... Inner peripheral surface, 17... Rotating operation cap body, 1
8... Small male screw shaft, 18'... Front end, 19... Annular stopper, 22... Small spring ridge, 23... Engaging sphere, 26... Sealing plate, 27... Pressing male screw body (conventional type) ).

Claims (1)

[Claim for Utility Model Registration] A holding cylinder is formed to which the regulator is attached at one end, and the tip of the cutting needle/air guide tube part of the regulator is inserted into the fitting guide opening provided concentrically at one end of the holding cylinder. In a holder for a small cylinder, which is arranged in a protruding manner and is formed so that the mouth side of the cylinder can be inserted from the open side of the holding cylinder, the holder is screwed into a female thread provided at the end of the open part, and is screwed into the cylinder. A male threaded cylinder having an engagement recess on the side for engaging the rear end of the cylinder, and a claw having an engagement stepped part formed in a continuous tooth shape around the opposite end of the male threaded cylinder. a toothed portion, and an inner peripheral surface having a larger diameter than the outer diameter of the claw toothed portion, and a small male screw shaft protruding from the cylinder that is screwed into the center of the male screw cylinder and presses the head of the cylinder. a movable operating cap body; and to restrict relative rotation between the male screw tube and the rotary operating cap body when the rotating operating cap body is screwed back;
An annular stopper fixed to the front end of the small male screw shaft so as to be able to come into contact with the inner surface of the engagement recess, and a small spring attached to the rotating operation cap body push the engagement step in the pawl tooth section in the axial direction. An opening device in a holder for a small cylinder, comprising: an engaging sphere that engages with the part;