JPH064465U - Steam sterilizer lid device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the operability when closing the opening of the sterilization container 1. [Structure] The opening of a sterilization container 1 is closed by a lid 7 fixed to an arm 4. A cylinder hole 9 is provided at the tip of the arm body 4,
The locking pin 17 is mounted in the cylinder hole 9 so as to project freely. An inclined surface 18 is formed at the tip of the locking pin 17. When closing the opening of the sterilization container 1, the handle 13 is provided with the elongated hole 14 while the locking pin 17 and the through hole 6 of the locking tool 5 are made to face each other.
Move along. Due to the rotation of the handle 13, the lid 7 is pressed against the sterilization container 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The lid device of the steam sterilizer according to the present invention is excellent in operability as it relates to the improvement of the lid device for opening and closing the opening of the sterilization container of the steam sterilizer for sterilizing various articles such as medical instruments and laboratory instruments. A lid device is provided.

[0002]

[Prior art]

 BACKGROUND ART Steam sterilizers are widely used to sterilize various items such as medical instruments and laboratory instruments before they are reused. The steam sterilizer allows high-temperature, high-pressure steam to be sent freely into a pressure-resistant sterilization container.When performing sterilization work, the item to be sterilized is stored in the sterilization container described above. After closing the opening, steam for sterilization is fed into the sterilization container. For this reason, the steam sterilizer is provided with a lid device for opening and closing the opening of the sterilization container. This lid device has conventionally been constructed as shown in FIGS. 4 to 5, for example.

That is, a pair of support brackets 2 and 3 are fixedly provided on the outer peripheral surface of a bottomed horizontal cylindrical sterilization container 1 on mutually opposite side surfaces in the horizontal direction. The end is pivoted. The arm 4 has a size that closes the opening of the sterilization container 1 in the middle part thereof, and supports and fixes a lid 7 having an annular packing 8 at a position facing the peripheral edge of the opening. There is. As described above, the base end portion of the arm body 4 is pivotally supported on the support bracket 2 by the vertical shaft 22, so that the arm body 4 having the lid body 7 fixed thereto is rotatable about this pivotal support portion.

Further, at the tip of the arm body 4, a cylinder hole 9 that opens at the tip surface of the arm body 4 is provided, and a long hole 10 that communicates the inside and outside of the cylinder hole 9 is provided on the front wall 4a. It is provided. A locking pin 12 is inserted into the cylinder hole 9 through a compression spring 11 with the tip of the compression spring 11 extending from the cylinder hole 9 when the compression spring 11 is in the expanded state. A handle 13 projecting to the front surface of the arm 4 through the elongated hole 10 is fixed to the pin 12.

The locking pin 12 is retracted in the cylinder hole 9 against the elastic force of the compression spring 11 by moving the handle 13 to the left in FIG. 5, and the handle 13 is moved to the right in FIG. As a result, it returns to the original state (the state in which the tip of the locking pin 12 projects from the cylinder hole 9).

On the other support bracket 3 fixed to the outer peripheral surface of the sterilization container 1, a locking tool 5 having a through hole 6 into which the tip of the locking pin 12 can be inserted is fixed. When the lid 7 is closed and the tip of the locking pin 12 is projected from the cylinder hole 9, the tip of the locking pin 12 is inserted into the through hole 6.

When the opening of the sterilization container 1 is opened and closed by using the lid device of the conventional steam sterilizer configured as described above, it is performed as follows. First, when closing the above-mentioned opening, the handle 13 is moved to the left to immerse the locking pin 12 in the cylinder hole 9, and in this state, the lid 7 is rotated toward the sterilization container 1 to remove the sterilization container 1. Close the opening. When the opening is closed by the lid 7, the handle 13 is moved to the right so that the tip of the locking pin 12 projects from the cylinder hole 9. Rightward movement of the handle 13 and the locking pin 12 can be performed with a light force by the elastic force of the compression spring 11. The tip of the locking pin 12 protruding from the cylinder hole 9 enters the through hole 6 formed in the locking tool 5 and disables the rotation of the arm body 4 to which the lid body 7 is fixed. The opening of the container 1 remains closed.

When opening the opening of the sterilization container 1, first, the handle 13 is moved to the left to immerse the locking pin 12 in the cylinder hole 9, and the arm 4 to which the lid 7 is fixed is rotatable. However, if the arm 4 is rotated to the side opposite to the sterilization container 1, the opening of the sterilization container 1 can be opened.

[0009]

[Problems to be solved by the device]

 By the way, in the case of closing the opening of the sterilization container 1 in the lid device of the conventional steam sterilizer described above, it is first necessary to align the tip of the locking pin 12 with the through hole 6 of the locking tool 5. . If the tip of the locking pin 12 and the through hole 6 are not aligned in this way, the tip of the locking pin 12 cannot be inserted into the through hole 6, and therefore the opening of the sterilization container 1 can be closed. Absent.

Therefore, when closing the opening of the sterilization container 1, first, the lid 7 is rotated, and the lid 7 is pressed against the sterilization container 1, whereby the tip of the locking pin 12 and the through hole are formed. 6 was aligned, and in this state, the handle 13 was moved to the right and inserted into the through hole 6 at the tip of the locking pin 12.

However, it is troublesome to press the lid 7 against the sterilization container 1 and then to operate the handle 13 as described above, and it is difficult to say that the operability is sufficient, and improvement thereof has been desired. By increasing the elasticity of the compression spring 11 provided in the cylinder hole 9, if the lid 7 is pressed against the sterilization container 1 and the handle 13 is released, the elasticity of the compression spring 11 locks the lid 7. It is conceivable that the tip of the pin 12 can be inserted into the through hole 6 freely, but as the elasticity of the compression spring 11 is increased, the locking pin 12 is moved to the left when opening and closing the opening. It is not preferable because a large force is required to maintain the above state.

The steam sterilizer lid device of the present invention was conceived in view of the above-mentioned circumstances.

[0013]

[Means for solving the problem]

 The steam sterilizer lid device of the present invention is similar to the above-described conventional steam sterilizer lid device in that the sterilization container opening is sandwiched between a lid body having a size that closes the opening of the sterilization container of the steam sterilizer. A pair of support brackets provided, and a vertical axis supported by one of the support brackets, the base end of which is pivotally supported, and the arm supporting the lid in the middle, and the tip of the arm. The front wall of the arm body is inserted through a locking pin that is inserted into and out of a horizontal cylinder hole that opens in the surface and a long hole that communicates the inside and outside of the cylinder hole and that opens to the front wall of the arm body. And a locking tool fixed to the other of the pair of support brackets, having a through hole extending in the horizontal direction into which the tip of the locking pin can be inserted. There is.

Particularly, in the steam sterilizer lid device of the present invention, the elongated hole is composed of a horizontal portion and a continuous portion extending downward from an end portion of the horizontal portion on the engaging member side. It has an L shape. In addition, at the tip of the locking pin, the portion that is opposite to the sterilization container in the state where the handle is located in the horizontal portion is inclined toward the sterilization container toward the tip edge of the locking pin. It has an inclined surface.

[0015]

[Action]

 With the steam sterilizer lid device of the present invention configured as described above, the work of opening and closing the opening of the sterilization container is carried out by moving the handle along the long hole as in the conventional lid device described above. It is carried out by putting in and out through the through hole formed in the locking tool.

However, when closing the opening of the sterilization container in the lid device of the steam sterilizer of the present invention, the arm body to which the lid body is fixed is placed in the sterilization container while the locking pin is immersed in the cylinder hole. The tip of the locking pin can be inserted into the through hole by turning the locking pin toward the through hole of the locking tool so that the tip of the locking pin faces the through hole of the locking tool.

That is, the tip of the locking pin is provided with an inclined surface that is inclined toward the tip edge of the locking pin toward the sterilization container. Even if it is not exactly aligned with the through hole of the lock pin, as long as it is in a state where they are roughly opposite to each other as described above, the locking pin first comes out from the cylinder hole, and then the locking pin with a small cross-sectional area is first used. The tip enters the through hole, and the inclined surface enters the through hole while slidingly contacting a part of the through hole. When the inclined surface slides in contact with a part of the through hole and enters this through hole, the lid moves toward the sterilization container and the tip of the locking pin enters the through hole as much as possible. The lid blocks the opening of the sterile container.

In this state, since the handle is located at the end of the horizontal portion forming the long hole on the side of the continuous portion, the handle is moved from this state to the lower end of the continuous portion. As a result, the locking pin rotates, but with this rotation, part of the through hole comes into contact with the inclined surface that is a short distance from the center of the locking pin, The cylinder is in contact with a cylindrical surface that has a long distance from the center of. Therefore, the lid body is pressed toward the sterilization container, and the above-mentioned opening is airtightly closed.

In this state, the handle is located at the lower end of the continuous part extending below the end of the horizontal part, and the locking pin does not move unless the handle is manually moved. Keeps the opening of the sterilization container airtightly closed.

The above-described rotation of the lid and movement of the handle can be performed by substantially continuous operations, so that the opening / closing operation of the sterilization container can be easily performed.

[0021]

【Example】

 1 to 3 show an embodiment of a lid device for a steam sterilizer of the present invention. A pair of support brackets 2 and 3 are fixedly provided on opposite side surfaces in the horizontal direction on the outer peripheral surface of the sterilized container 1 having a bottomed horizontal cylindrical shape, and the vertical direction is provided on one (left side in FIG. 2) support bracket 2. A base end portion (left end portion in FIGS. 1 and 2) of the arm 4 is pivotally supported by the shaft 22. A lid 7 having a size that closes the opening of the sterilization container 1 and provided with an annular packing 8 at a position facing the peripheral portion of the opening is supported and fixed to an intermediate portion of the arm 4. . As described above, the base end portion of the arm body 4 is pivotally supported on the support bracket 2 by the vertical shaft 22, so that the arm body 4 to which the lid body 7 is fixed is rotatable around the pivotal support portion.

At the tip of the arm 4 (right end in FIGS. 1 and 2), a cylinder hole 9 that opens at the tip of the arm 4 is provided, and the cylinder hole 9 is provided at the front wall 4a. An elongated hole 14 is provided to communicate the inside and outside of the. The elongated hole 14 is formed in a substantially L-shape including a horizontal portion 15 and a continuous portion 16 extending downward from one end portion (the right end portion in FIGS. 1 and 2) of the horizontal portion 15. The width dimension of the long hole 14 is slightly larger than the outer diameter of the handle of the handle 13 described later, and is sufficiently smaller than the outer diameter of the locking pin 17 described later. For this reason, the handle 13 is movable in the horizontal direction when it is located in the horizontal portion 15 of the elongated hole 14, but is not movable in the horizontal direction when it is located in the continuous portion 16. Further, an air vent hole 20 for communicating the cylinder hole 9 with the front wall 4a of the arm 4 is provided at the rear end of the cylinder hole 9 (the left end in FIG. 2), and the cylinder of the locking pin 15 described below is provided. It is designed to facilitate access to and from the hole 9.

A locking pin 17 is inserted into the cylinder hole 9. The locking pin 17 in the present invention has a tip portion (right end portion in FIGS. 1 and 2) at a state where the handle 13 is located on the horizontal portion 15, that is, a state where the lid 7 can be opened and closed. Except for the part on the opposite side of the sterilization container 1 (the lower part of FIG. 2), it has a cylindrical shape, and the part on the opposite side is inclined toward the sterilization container 1 toward the tip edge of the locking pin 17. The inclined surface 18 is provided. Therefore, the tip of the locking pin 17 has a wedge shape. Further, a grip 13 is fixed to a portion of the locking pin 17 provided with the inclined surface 18 and aligned with the elongated hole 14, and the grip 13 is fixed to the arm body 14 through the elongated hole 14. It is projected from the front.

As described above, since the handle 13 is fixed to the side surface of the locking pin 17, the locking pin 17 is retracted into the cylinder hole 9 when the handle 13 is moved leftward in FIGS. That is, when the handle 13 is moved along the horizontal portion 15 of the elongated hole 14 to the end of the horizontal portion 15, the locking pin 17 is retracted into the cylinder hole 9.

On the other support bracket 3 fixedly mounted on the outer peripheral surface of the sterilization container 1, a locking tool 5 having a through hole 6 extending in the horizontal direction, into which the locking pin 17 can be inserted, is fixedly mounted. When the lid body 7 is closed, the tip of the locking pin 17 protruding from the cylinder hole 9 opening in the tip surface of the arm body 4 enters the through hole 6 so that the locking pin 17 and the locking tool 5 are engaged with each other.

In FIGS. 1 and 2, reference numeral 19 is a limit switch, and when the locking pin 17 is sufficiently projected from the cylinder hole 9, the tip of this locking pin 17 is closed by pressing the limit switch 19. Then, the valve provided in the pipe for sending the steam into the sterilization container 1 can be opened, and the steam can be sent into the sterilization container 1 at any time. When the locking pin 17 is not sufficiently projected, that is, when the lid 7 is not completely closed, the limit switch 19 is opened and provided in the pipe for sending the steam into the sterilization container 1. The valve cannot be opened so that steam is not sent into the sterilization container 1.

Reference numeral 21 denotes a case that covers the lid body 7. The front surface of the case 21 is provided with an opening larger than the long hole 14 at a position facing the long hole 14 of the arm body 4, and a handle is provided. 13 is projected from the front surface of the case 21 and is movable along the elongated hole 14.

The operation of the lid device of the steam sterilizer of the present invention constructed as described above is as follows.

When the opening of the sterilization container 1 is opened, the handle 13 is moved to the end of the horizontal portion 15 forming the long hole 14 on the side opposite to the continuous portion 16. As a result, the tip of the locking pin 17 is pulled out from the through hole 6 formed in the locking tool 5, and the entire locking pin 17 is recessed in the cylinder hole 9. As a result, since the arm body 4 to which the lid body 7 is fixed becomes rotatable, if the arm body 4 is rotated to the side opposite to the sterilization container 1, the opening of the sterilization container 1 may be opened.

When closing the opening of the sterilization container 1, the arm 4 to which the lid 7 is fixed is rotated toward the sterilization container 1 with the locking pin 17 retracted into the cylinder hole 9. As a result, the lid 7 covers the opening of the sterilization container 1 and the tip of the locking pin 17 is in a state of approximately facing the through hole 6 of the locking tool 5. From this state, the handle 13 is directed from the end of the horizontal portion 15 (the left end of FIGS. 1 and 2) forming the elongated hole 14 to the end of the continuous portion 16 (the right end of FIGS. 1 and 2). When moved, the tip of the locking pin 17 projects from the cylinder hole 9 toward the through hole 6.

As described above, the tip of the locking pin 17 is closer to the sterilization container 1 as it goes to the tip edge of the locking pin 17 at the portion opposite to the sterilization container 1 of the tip. Since the inclined surface 18 that is inclined in the direction is provided, even if the tip of the locking pin 17 and the through hole 6 of the locking tool 5 are not exactly aligned, as long as they are approximately facing each other as described above. As the locking pin 17 projects from the cylinder hole 9, the leading end of the locking pin 17, which is formed in a wedge shape due to the existence of the inclined surface 18, first enters the through hole 6. Further, the tip end portion of the locking pin 17 enters the through hole 6 while the inclined surface 18 and the front surface (lower surface in FIG. 2) side portion of the through hole 6 at the opening edge on the arm body 4 side are in sliding contact. By entering the through hole 6 while the inclined surface 18 slides in contact with the corresponding portion of the through hole 6, the lid 7 moves toward the sterilization container 1, and the locking pin 17 is moved as shown in FIGS. The lid 7 closes the opening of the sterilization container 1 in a state where the tip end of the container is in the through hole 6 as much as possible.

In this state, the handle 13 is located at the end of the horizontal portion 15 forming the long hole 14 on the side of the continuous portion 16 (the state shown by the solid line in FIG. 3). It is moved to the lower end of the continuous portion 16 as indicated by the chain line. As a result, the locking pin 17 rotates in the counterclockwise direction in FIG. 3, but with this rotation, the inner peripheral surface on the front surface side of the through hole 6 moves from the state in which it contacts the inclined surface 18 to the inclined surface. It is in a state of contacting a cylindrical surface not provided with 18. Since the distance from the center of the locking pin 17 to the cylindrical surface is also larger than the distance from the center to the inclined surface 18, the locking pin 17 and the arm body are accompanied by the rotation of the locking pin 17. 4 is pushed to the right in FIG. Therefore, the lid body 7 supported by the arm body 4 is strongly pressed toward the sterilization container 1 and the opening is hermetically closed.

In this state, the handle 13 is located at the lower end of the continuous portion 16 extending below the end of the horizontal portion 15, and the locking pin 17 does not move unless the handle 13 is artificially moved. Therefore, the lid 7 maintains the state in which the opening of the sterilization container 1 is airtightly closed.

In the lid device of the steam sterilizer of the present invention, the opening and closing work of the sterilization container 1 can be performed because the above-described rotation of the lid 7 and movement of the handle 13 can be performed in a substantially continuous operation. And the operability is improved.

In the present embodiment, the compression spring 11 as shown in FIG. 5 is not provided in the cylinder hole 9, but a compression spring may be mounted as in the conventional example described above. good. Further, although the limit switch 19 is provided at the position shown in FIG. 2 in the present embodiment, when the handle 13 is moved to the position shown by the chain line in FIG. The limit switch 19 can also be set to a closed position. In this case, the steam is sent only when the lid 7 is completely and airtightly closed, so that the safety is further improved.

[0036]

[Effect of device]

 Since the steam sterilizer lid device of the present invention is configured and operates as described above, the operability is improved especially when closing the opening of the sterilization container, and the practical effect is great.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3 is a sectional view taken along line BB of FIG.

FIG. 4 is a front view showing an example of a conventional device.

5 is a sectional view taken along line CC of FIG.

[Explanation of symbols]

 1 Sterilization container 2, 3 Support bracket 4 Arm body 4a Front wall 5 Locking tool 6 Through hole 7 Lid body 8 Packing 9 Cylinder hole 10 Long hole 11 Compression spring 12 Locking pin 13 Handle 14 Long hole 15 Horizontal part 16 Continuous part 17 Locking Pin 18 Sloping Surface 19 Limit Switch 20 Air Venting Hole 21 Case 22 Vertical Axis

Claims (1)

[Scope of utility model registration request] 1. A lid body having a size for closing an opening of a sterilization container of a steam sterilizer, a pair of support brackets sandwiching the opening of the sterilization container, and a vertical member supported on one of the support brackets. An arm body that pivotally supports its base end portion by a shaft and that supports the lid body in the middle portion, and a locking pin that is opened at the tip end surface of this arm body and that is inserted freely into and out of a horizontally extending cylinder hole, A grip protruding from the front wall of the arm and a tip of the locking pin are inserted through a long hole that communicates the inside and the outside of the cylinder hole with each other and opens in the front wall of the arm. In a lid device of a steam sterilizer having a through hole and a locking tool fixed to the other of the pair of support brackets, in the steam sterilizer lid device, It is formed in a substantially L-shape, which is composed of a continuous portion extending downward from the end on the locking tool side, and At the tip of the locking pin, at a portion opposite to the sterilization container in a state where the handle is located in the horizontal portion, an inclined surface inclined toward the sterilization container toward the tip edge of the locking pin is provided. A steam sterilizer lid device characterized by being provided.