JP2529427Y2 - High pressure steam sterilizer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-pressure steam sterilizer for sterilizing and drying medical devices and the like.

[0002]

2. Description of the Related Art Conventionally, in a steam sterilizer, as means for sealing a chamber and a chamber lid, for example, Japanese Utility Model Application Laid-Open No. 56-56.
336. As shown in FIG. 5, the apparatus includes a chamber lid a that seals the opening of the chamber.
One side of the arm b attached to the arm is rotatably supported,
A notch c is provided on the other side of the arm b, and the notch c
A rotatable support is provided for the rear part of the handle engagement shaft d, which can be inserted into the fitting cylinder e. A handle f is provided.

[0003]

In the above arrangement, the handle engaging shaft d is turned to fit into the notch c, and the tightening cylinder e is moved in the axial direction by the turning operation of the handle f to tighten the handle. This is a method in which the arm b is pressed toward the chamber at the tip of the attached cylinder e, and there is a problem that the operation is troublesome. In view of the above, the present invention provides a high-pressure steam sterilizer that facilitates the work of an operator in consideration of the above-described drawbacks.

[0004]

According to the present invention, there is provided a cylindrical chamber for accommodating an object to be sterilized, an arm member provided over an opening of the chamber, and the arm member fixed to the arm member. A chamber lid for covering the opening of the chamber,
In the high-pressure steam sterilizer, one end of the arm member is rotatably supported by one side of the chamber, and a mounting bracket for holding a vertically movable shaft for covering is attached to the other end. The shaft is configured to be inserted through a hole provided in the arm member and a hole provided in a support member attached to the chamber, and the shaft is vertically and swingably movable with respect to the mounting bracket. It is attached as follows.

Further, in the above configuration, the thickness of the shaft is made larger in a portion located in a hole provided in the arm member than in a cover state, in a portion located in a hole of the support member. Things.

[0006]

According to the above construction, when the axis of the locking shaft is misaligned with the axis of the hole through which the shaft is inserted, the end face of the shaft hits and it is difficult to enter the hole. Since it is swingable, it can be easily inserted into the hole by correcting the displacement.

In addition, the pressure applied to the chamber lid during sterilization is received by the support member attached to the chamber via the large diameter portion of the shaft, and the force applied to the mounting bracket is reduced to prevent damage to the mounting bracket.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a cylindrical chamber 1 for storing an object to be sterilized is disposed in a box-shaped frame 2, and an opening 3 of the chamber 1 is provided on the front surface. This opening 3
Is sealed by a chamber lid 4 having a packing. The chamber lid 4 is attached to an arm member 5 disposed over the opening 3, and the arm member 5 is pivotally mounted on a hinge 6 so as to be rotatable in a horizontal direction. The hinge 6 is fixed to the side wall of the chamber 1 so as to protrude from the front surface of the frame 2. At the other end of the arm member 5, two guide shafts 7, 7 are inserted through a vertical hole provided in the arm member 5, and the guide shafts 7, 7 are connected to a chamber lid by a guide shaft mounting bracket 8. 4 is fixed. A mounting bracket 9 is attached to the guide shafts 7 and 7 so as to be movable up and down. As shown in FIG. 3, the mounting bracket 9 has a large-diameter portion 10 at a lower portion and a small-diameter portion 11 at an upper portion. A lock shaft 12 is mounted. The lock shaft 12 has a small diameter portion 11 inserted into a hole 13 provided in the mounting bracket 9, a spring 14 incorporated therein, and a spring supporting bracket 15 and a mounting screw 16 for retaining the compressed state.
Installed in.

On the front surface of the frame 2, a support member 17 for receiving the tip of the arm member 5 is fixedly provided on the side surface of the chamber 1. The large-diameter portion 10 of the lock shaft 12 is inserted into the distal end of the support member 17 and the arm member 5 so that the large-diameter portion 10 of the lock shaft 12 is inserted to cover the chamber lid 4. Orientation holes 18, 19 and 2
0 is provided. Note that the inside diameter of the vertical hole 20 provided in the arm member 5 is such that a slight gap is formed when the lock shaft 12 is inserted. In the mounting bracket 9,
There is provided a knob 21 for moving this up and down.

In the above-mentioned configuration, when the user applies a cover, the chamber cover 4 is pressed against the chamber opening 3 while holding the knob 21 to push the mounting metal 9 upward, and the vertical direction provided on the support metal 17 is provided. An operation of pushing down the knob 21 so that the lock shaft 12 is inserted through the holes 18 and 19 and the hole 20 provided in the arm member 5 is required. At this time, when the axis L of the lock shaft 12 and the axis M of the hole 20 of the arm member 5 coincide, the knob 21
Is easy to push down, but when the axes are misaligned and do not coincide, the lock shaft 12 does not smoothly enter the vertical hole 20 and cannot be easily pushed down.

In order to solve the above problem, for example, a method is conceivable in which the inner diameter of the hole 20 of the arm member 5 is made considerably larger than the outer diameter of the lock shaft 10 so as to correct the deviation of the axis. In the case where a load due to pressure is applied to the chamber lid 4 in the sterilization process, the member receiving the load is not the support member 17 but the mounting member 9, so the mounting member 9 is designed with a member having sufficient strength. Need arises.

However, in the present embodiment, the small diameter portion 11 of the lock shaft 12 is inserted into the hole 13 provided in the mounting bracket 9 and the spring 14 is assembled and held in a compressed state. When a horizontal force is applied to the lock shaft 12, the lock shaft 12 can perform an arc motion with the seat around the hole 13 of the mounting bracket 9 as a fulcrum, and the inner diameter of the hole 13 of the mounting bracket 9 and this hole 13 Since the difference between the outer diameters of the small-diameter portions 11 of the lock shaft 12 that passes therethrough is large and the position of the axis L can be changed by moving horizontally within this range, the axis L of the lock shaft 12 and the arm member can be changed. When the knob 21 is pushed down in a state where the axis M of the hole 20 of No. 5 does not match, as shown by a broken line a in FIG.
It hits the entrance end face of the vertical hole 20 of the arm member 5,
Furthermore, a horizontal force acts on the tip of the lock shaft 12 due to the force for pushing down the knob 21, and the lock shaft 12 swings, and tries to insert the lock shaft 12 into the vertical hole 20. At this time,
The lock shaft 12 is horizontally moved in a direction in which the axes L and M are about to coincide with each other, and is inserted into the hole 20 as shown by a broken line b in FIG. By further pressing it down, it can be inserted through the hole 19.

After the lock shaft 12 is inserted and covered as described above, various processes for sterilization are performed. Since the pressure in the chamber 1 is higher than the atmospheric pressure during the sterilization process and until the exhaust process is completed,
If the chamber lid 4 is opened carelessly, the high-temperature and high-pressure steam in the chamber 1 jumps out and is very dangerous. Therefore, as shown in FIG.
Large diameter portion 10 of lock shaft 12 located in holes 18 and 19 of
May be formed with a reduced outer diameter. With this configuration, in a state where the load received by the chamber lid 4 due to the pressure in the chamber is transmitted to the lock shaft 12,
When the lock shaft 12 is forcibly pushed upward, the step portion 22 comes into contact with the periphery of the hole 18 of the support bracket 17 to generate a resistance force, and a locked state is established, so that safety can be secured.

[0014]

[Effects of the Invention] Since the present invention is configured as described above, it is possible to provide a steam sterilizer that allows a user to safely and easily cover the chamber.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a high-pressure steam sterilizer of the present invention.

2 is an enlarged view of a main part of FIG. 1, wherein FIG. 2 (a) is a front view and FIG. 2 (b) is a side view.

FIG. 3 is an enlarged sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view of a main part showing another structure of the lock shaft.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chamber 2 Frame 4 Chamber lid 5 Arm member 9 Mounting bracket 12 Lock shaft

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuichi Nishizaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Kenichi Kawada 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Inside Sanyo Electric Co., Ltd. (56) References Japanese Utility Model Sho 64-19440 (JP, U) Japanese Utility Model Sho 63-187770 (JP, U) Japanese Utility Model Sho 52-4294 (JP, U) Japanese Utility Model Sho 56-56336 ( JP, U)

Claims (2)

(57) [Scope of request for utility model registration] 1. A cylindrical chamber for accommodating an object to be sterilized, an arm member provided over an opening of the chamber, and an opening of the chamber fixed to the arm member. In a high-pressure steam sterilizer comprising a chamber lid, one end of the arm member is rotatably supported on one side of the chamber, and the other end holds a vertically movable shaft for covering. A mounting bracket is attached, and the shaft is configured to be inserted through a hole provided in the arm member and a hole provided in a support member mounted on the chamber, and the shaft is perpendicular to the mounting bracket, A high-pressure steam sterilizer mounted so as to be swingable. 2. The apparatus according to claim 1, wherein a thickness of the shaft is larger in a portion provided in the hole provided in the arm member than in a cover state, in a portion provided in the hole of the support member. Item 2. A high-pressure steam sterilizer according to Item 1.