JPH084444A - Protective door device - Google Patents

Abstract

PURPOSE:To prevent radiation leakage to the outside and allow indoor sound insulation, thermal insulation and airtightness to be kept without interfering with the going-in/out of a stretcher, a wheelchair, a patient under rehabilitation, or the like regarding a protective door device not requiring a lower frame protruding from a floor. CONSTITUTION:Plate springs 15, 16 that can move in the width direction of a door 1 and descend being curved are provided in the connected state inside an outer case disposed at the lower part of the door. Airtight rubber and a lead plate serving as shielding members are mounted to an inner case enclosed in the outer case and hung being engaged with the plate springs 15, 16. A rod cap 6 connected to the plate springs 15, 16 presses or releases the plate springs 15, 16 in correspondence with the opening/closing of the door 1. The shielding members are thereby elevated in relation to a floor so as to shield a gap between the floor and the bottom face of the door 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective door device, and more particularly to a protective door device applicable to a facility for radiation protection such as X-rays, soundproofing, heatproofing and airtightness maintenance.

[0002]

2. Description of the Related Art As an example of a conventional protective door device, a protective door device provided in an X-ray examination room such as a hospital or clinic will be described with reference to FIG. In FIG. 6, an X-ray examination room A for taking an X-ray photograph is configured by arranging lead plates having a function of not transmitting radiation to the door 50 and the wall 51 for the purpose of preventing radiation leakage to the outside B. .

An outer frame 52 and a lower frame 53 arranged corresponding to the four sides of the door 50 are provided in the gap between the door 50 and the wall 51.
A lead plate is also arranged on the lower frame 53 in the same manner to prevent radiation leakage from the gap between the door 50 and the wall 51.

[0004]

However, in the above-mentioned conventional protective door device, since the lower frame 53 is configured to project from the floor, it is difficult for a stretcher, a wheelchair, or a patient during rehabilitation to come in and out. There is such a problem. In addition, it is easy to enter and exit with a door without the lower frame 53, but there is a slight gap between the bottom of the door and the floor,
Radiation reflected on the floor or wall from the gap may leak to the outside B.

Even when the room is designed to be soundproof and heatproof, or when the room is kept airtight, there is sound leakage and air circulation from the gaps, and soundproofing and heatproofing in the room There is a problem that the effect of maintaining airtightness is hindered.

The protective door device according to the present invention does not require a lower frame protruding from the floor surface, so that it does not hinder the entrance and exit of stretchers, wheelchairs, patients during rehabilitation, etc., and also prevents radiation leakage to the outside. It is an object of the present invention to provide a protective door device capable of preventing noise, preventing noise in a room, preventing heat, and maintaining airtightness.

[0007]

SUMMARY OF THE INVENTION A protective door device according to the present invention is provided with a plurality of leaf springs connected to the bottom portion of the door that can be pressed in the width direction of the door and curved downward, and the leaf springs are connected. While fixing one end of the to the door and connecting the drive member to the other end, while having a length corresponding to the width of the door,
It has a shielding member which is engaged with the leaf spring and is hung at a plurality of fulcrums, and the driving member extends or bends the leaf spring in response to the opening / closing operation of the door so that the shielding member is moved up and down. It is a protective door device characterized by being configured.

Further, it is preferable that the shielding member comprises a member in which lead material or lead and rubber are kneaded over the entire length. Further, it is preferable that the shielding member is configured to have a rubber material over the entire length.

[0009]

Since the protective door device according to the present invention is configured as described above, when the leaf spring connected by the drive member is pressed in the width direction of the door in conjunction with the closing operation of the door, one end of the door is fixed. The leaf springs are bent downward to lower the shield member. Further, when the pressing force of the leaf spring in the width direction of the door is released by the driving member in conjunction with the operation of opening the door, the leaf spring extends and the shielding member can be raised. By engaging the shield member with the leaf spring at a plurality of fulcrums, the shield member can be moved up and down while maintaining the balance of the shield member.

Since the shielding member is constituted by a member obtained by kneading lead material or lead and rubber over the entire length or by a rubber material over the entire length, the shielding member has an appropriate weight, It can be brought into contact with the floor and brought into close contact with it by its own weight. Further, since lead has an effect of not transmitting radiation, when the shielding member is made of a lead material or a material in which lead and rubber are kneaded, radiation can be shielded and radiation leakage to the outside can be prevented. Further, since the rubber material has the function of maintaining the airtightness, when the shielding member is constituted by the rubber material, the circulation of the atmosphere is shielded, and the soundproofing, heatproofing and airtightness maintenance of the room can be performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a protective door device for shielding radiation as an example of a protective door device according to the present invention will be specifically described with reference to the drawings. 1 (a) and 1 (b) are perspective views showing a door provided with a protective door device of the present invention, FIG. 2 (a) is a plan view of a protective door device attached to the door, and FIG. 2 (b) is protective. Front sectional view of the door device, FIG. 3 is a side sectional view of the protective door device, FIG. 4 (a) is a front view of the outer case, and FIG. 4 (b).
Is a cross-sectional view of the outer case, FIG. 4C is a front view of the inner case,
4D is a sectional view of the inner case, FIG. 5A is a plan view of the leaf spring, and FIG. 5B is a front view of the leaf spring.

1 (a) and 1 (b), a door 1, a wall 2, of a room A for performing an X-ray examination of a hospital or clinic.
A lead plate having a function of preventing transmission of radiation such as X-rays is arranged over the entire surface of the floor 3 and a ceiling (not shown). Further, an outer frame 2a having lead plates arranged over the entire surface corresponding to the sides other than the bottom side of the four sides of the door 1 is provided to be connected to the wall 2 to strictly prevent radiation leakage to the outside B. Is configured to get.

The outer bottom portion of the door 1 corresponds to the height of the bottom surface of the door 1 and faces the floor 3, and the protective door device main body 4 is provided.
Is attached, and is moved integrally with the opening and closing of the door 1. As shown in FIG. 1A, when the door 1 is opened, a predetermined space is maintained between the floor 3 and the door 1 and the protective door device body 4, and the door 1 can be opened without any trouble. It is like this.

In FIG. 1 (a), a rod 5 projects from the hinge side of the door 1 in the body 4 of the protective door device, and a rod cap 6 serving as a driving member is attached to the tip of the rod 5. . Further, a contact portion 2b is arranged at a position corresponding to the rod cap 6 of the outer frame 2a, and when the door 1 is closed as shown in FIG. 6 is pressed into the body 4 of the protective door device, and the airtight rubber 7 serving as a shielding member, and the lead plate 8 fitted and held inside the airtight rubber 7 descend and come into contact with the floor 3 to come into close contact therewith. It has become.

The airtight rubber 7 and the lead plate 8 have a length corresponding to the width of the door 1, a height corresponding to the gap between the door 1 and the floor 3, and further have an appropriate weight. Has been done. A lead plate 9 having a size corresponding to the length and width of the main body 4 is provided on the side surface of the main body 4 of the protective door device.

With the above structure, when the door 1 is closed, the gap between the bottom of the door 1 and the floor 3 is closed by the airtight rubber 7 and the lead plate 8 to prevent radiation leakage and air circulation. It is a thing.

Next, the structure of the protective door device body 4 will be specifically described. As shown in FIG. 2A, the protective door device main body 4 is fixed to the lower part of the door 1 by a screw 10 from the front and a screw 12 from the end face through a backing plate 11.

The protective door device body 4 is shown in FIGS.
It has an outer case 13 and an inner case 14 made of aluminum shown in FIG. The outer case 13 has a length corresponding to the width of the door 1, and the inner case 14 has a size corresponding to the outer case 13. As shown in FIG.
As shown in (a), a plurality of holes 13a corresponding to the screws 10 are drilled, and a hole 13b for inserting a fixing screw 35 for fixing a fixing seat 17 described later is drilled as shown in FIG. 2 (b). .
Further, as shown in FIG. 2B, a fixed seat 17, a connecting piece 18, and a connecting seat 19 for supporting the leaf springs 15 and 16 are provided inside the outer case 13.
There are provided an engagement frame 20 into which the above components are inserted and engaged, and a storage frame 21 for storing the inner case 14.

The inner case 14 has an H-shaped cross section as shown in FIG. 4 (d), and the leaf spring 15 shown in FIG. 2 (b).
Hole 14a into which the retaining shafts 22 and 23 engaged with 16 are inserted and engaged
Is provided. A locking claw 24 is provided at a position corresponding to the hole 14a. As shown in FIG.
The mohair 25 is inserted and locked. This mohair 25 is for smoothly sliding the inside of the outer case 13 when the inner case 14 moves up and down. A locking claw 26 for fitting and locking the airtight rubber 7 shown in FIG. 3 is provided in the lower portion of the inner case 14.

As shown in FIG. 3, the airtight rubber 7 has a length and a width corresponding to the length and width of the inner case 14 and a predetermined height. A lead plate 8 having a size and a predetermined thickness corresponding to the length and height of the rubber 7 is fitted inside the airtight rubber 7 and is held integrally by the frictional force of the elastic force of the rubber 7. ing. A locking groove 27 corresponding to the locking claw 26 of the inner case 14 is formed in the upper portion of the airtight rubber 7. Therefore, the inner case 14 and the airtight rubber 7 can be integrally fixed by engaging the locking claw 26 with the locking groove 27 and inserting the airtight rubber 7 into the inner case 14.

The leaf springs 15 and 16 are formed in the shapes shown in FIGS. 5A and 5B, and have valleys 15a and 16a in the center. With this shape, when a pressing force is applied from both ends of the leaf springs 15 and 16 in the longitudinal direction toward the center,
(B) The leaf springs 15 and 16 can be curved downward. At both ends of the leaf springs 15 and 16, holes 15b and 16b that engage with the leaf spring retaining shaft 28 shown in FIG. 2B are provided.

As shown in FIG. 2B, both ends of the leaf springs 15 and 16 are supported by a leaf spring stop shaft 28, and the leaf spring stop shaft 28 that supports one end of the leaf spring 15 is fitted to the fixed seat 17. Fixed. Leaf spring stop shafts 28 that support the other end of the leaf spring 15 and one end of the leaf spring 16 are fitted and fixed to the connecting piece 18, respectively, and the leaf springs 15 and 16 are connected in a substantially straight line by the connecting piece 18. It

Further, a leaf spring stop shaft 28 which supports the other end of the leaf spring 16 is fitted and fixed to the connecting seat 19. Further, the connection seat 19 is connected to the rod rod 30 by a stop shaft 29.
A screw rod 32 is connected to the other end of the rod rod 30 by a stop shaft 31, and one end of the screw rod 32 is locked to a retaining ring 33 fitted and fixed to the outer periphery of the rod rod 30. The anti-rotation spring 34 is fitted.

The rod 5 is fitted around the outer circumference of the screw rod 32, and one end of the rod 5 is configured to abut against the other end of the detent spring 34. Then, the rod cap 6 fitted into the other end of the rod 5 and provided with a screw 6a corresponding to the screw 32a formed in the screw rod 32 is provided.
The length from the rod rod 30 to the rod cap 6 can be adjusted by screwing a and 32a together and rotating the rod cap 6.

Therefore, by setting the protruding position of the rod cap 6 corresponding to the descending distance of the leaf springs 15 and 16 in correspondence with the distance of the gap from the bottom surface of the door 1 to the floor 3, the airtight when the door 1 is closed. The rubber 7 and the lead plate 8 can be brought into contact with the floor 3.

The fixed seat 17, the connecting piece 18, the connecting seat 19,
The rod rod 30, the rod 5 and the like are housed in the engagement frame 20 of the outer case 13, and the fixed seat 17 is fixed by the fixing screw 35 to the outer case 13.
It is fixed to. The connecting piece 18, the connecting seat 19, etc. are engaging frames.
The inside of the engaging frame 20 is slidably engaged in the longitudinal direction of the engaging frame 20. Further, the leaf springs 15 and 16 are configured to have a width that allows the leaf springs 15 and 16 to descend from the inside of the engagement frame 20 into the inside of the storage frame 21.

The rod cap 6 having the above structure is shown in FIG.
When pressed in the direction of arrow a in (b), screw rod 32 and rod rod 3
0, the coupling seat 19, the leaf spring 16, the coupling piece 18, the leaf spring 15, and the fixed seat 17 are sequentially transmitted with the pressing force, and the fixed seat 17 is fixed, so that the valley portions 15a and 16a of the leaf springs 15 and 16 are fixed. Moves down, the leaf springs 15 and 16 bend, and the connecting piece 18, the connecting seat 19 and the like move in the engagement frame 20 in the direction of arrow a in FIG.

When the pressing force on the rod cap 6 is released, the leaf springs 15 and 16 expand due to the elastic force of the leaf springs 15 and 16, and the connecting seat 19, the connecting piece 18 and the like move in the opposite direction to the above. The rod cap 6 returns to its original position.

Pressing shafts 22 and 23 for supporting the inner case 14 are placed and engaged with the valleys 15a and 16a of the plate springs 15 and 16, respectively. Leaf spring with movement
It is configured so as to be movable on a flat portion formed in the valley portions 15a and 16a of 15 and 16.

A retaining shaft 22 is engaged with the trough portion 15a of the leaf spring 15, and a spring restraining piece 36 having a shape corresponding to the shape of the trough portion 15a is placed in contact therewith. The position of the shaft 22 is regulated so as to regulate the position of the inner case 14 in the longitudinal direction. That is, when the rod cap 6 is pressed in the direction of arrow a in FIG. 2B, the leaf springs 15 and 16 move down in the same direction as described above.

At this time, the restraining shaft 22 placed on the valley portion 15a of the leaf spring 15 is regulated by the spring restraining piece 36 to a substantially central position of the valley portion 15a. On the other hand, the holding shaft 23 placed on the valley portion 16a of the leaf spring 16 moves above the flat portion of the valley portion 16a of the leaf spring 16 because the leaf spring 16 moves in the direction of arrow a in FIG.
Move from left to right in (b). Therefore, even if the leaf springs 15 and 16 move in the longitudinal direction of the outer case 13, the holding shafts 22 and 23 are restricted to a substantially fixed position with respect to the longitudinal direction of the outer case 13. The outer case 13 can be restricted to a substantially fixed position in the longitudinal direction.

The manner in which the protective door device configured as described above operates in response to opening and closing of the door 1 will be described. First, as shown in FIG. 1A, when the door 1 is opened, the rod cap 6 is separated from the abutting portion 2b provided on the wall 2, and the leaf springs 15 and 16 in the protective door device main body 4 are separated. Is in a stretched state. As a result, the airtight rubber 7 and the lead plate 8 are separated from the floor 3 while being housed in the outer case 13.
Therefore, the door 1 can be freely rotated.

Next, when the door 1 is closed as shown in FIG. 1 (b), the rod cap 6 abuts on the abutting portion 2b and
It is pressed in the direction of arrow a in (b). Then the leaf spring 15,
While moving in the same direction, 16 bends and descends, and the inner case 14, the airtight rubber 7, and the lead plate 8 descend. Then, as shown in FIG. 1B, the airtight rubber 7 and the lead plate 8 are exposed from the outer case 13 and come into contact with the floor 3, and come into close contact with the floor 3 by its own weight.

As shown in FIG. 3, a lead plate 9 is arranged on the side surface of the outer case 13, and the lead plate 8 contacting the floor 3 prevents radiation leakage between the bottom surface of the door 1 and the floor 3. It can be prevented. Further, the airtight rubber 7 can prevent the circulation of the atmosphere, and can perform soundproofing, heatproofing, and maintaining airtightness.

In this embodiment, since the leaf springs 15 and 16 are connected in two, the elastic effect of the leaf springs 15 and 16 can be effectively exhibited. That is, the leaf spring is not unnecessarily loosened and the inner case 14 is not swung in the outer case 13.
Further, the balance of the inner case 14 is maintained by supporting the inner case 14 at two positions by the respective leaf springs 15 and 16, so that the inner case 14 does not tilt and the airtight rubber 7 and the lead plate 8 are placed on the floor. It is possible to make horizontal contact with the No. 3.

Although the shielding member of the above embodiment is constructed by layering the airtight rubber 7 and the lead plate 8 over the entire length,
As another embodiment, the shielding member can be configured to have a member in which lead and rubber are kneaded over the entire length, so that radiation can be blocked and circulation of the atmosphere can be prevented, and the same effect as described above can be obtained. Can be done. Further, although the protective door device main body 4 is arranged on the outer bottom portion of the door 1 in the above-mentioned embodiment, it can be configured in the same manner even when it is provided on the bottom surface or the inner bottom portion of the door 1, and similar effects can be obtained. . Further, in the above embodiment, the two leaf springs 15 and 16 are connected to each other, but it is also possible to connect another plurality of leaf springs to each other.

In the case of the above-mentioned structure, the lower frame rising from the floor as in the conventional case is unnecessary, so that a stretcher, a wheelchair, a patient in rehabilitation or the like is in the room A.
There is no problem even when going in and out. In addition, although the protective door device that shields radiation is described in the above-described embodiment, the invention is also applicable to doors other than a room that handles radiation, for example, doors in a room configured to maintain soundproofness, heatproofness, or airtightness. .

[0038]

Since the protective door device according to the present invention has the above-described structure and operation, when the door is closed, the gap between the bottom surface of the door and the floor surface is filled with lead material or lead and rubber. By shielding with a shielding member that has a kneaded member, radiation leakage can be prevented, and by shielding with a shielding member that has a rubber material or a material in which lead and rubber are kneaded, the soundproofing, heatproof, and airtightness of the room It is effective for holding. Further, when the door is opened, the shielding member is separated from the floor so that the door can be freely rotated. Further, the present invention does not require a lower frame projecting from the floor as in the conventional case, so that there is no obstacle to the entrance and exit of a stretcher, a wheelchair, or a patient during rehabilitation.

[Brief description of drawings]

1A and 1B are perspective views showing a door provided with a protective door device of the present invention.

FIG. 2A is a plan view of a protective door device attached to a door, and FIG. 2B is a front sectional view of the protective door device.

FIG. 3 is a side cross-sectional explanatory view of a protective door device.

4A is a front view of the outer case, FIG. 4B is a sectional view of the outer case, FIG. 4C is a front view of the inner case, and FIG. 4D is a sectional view of the inner case.

5A is a plan view of a leaf spring, and FIG. 5B is a front view of the leaf spring.

FIG. 6 is a diagram illustrating a conventional example.

[Explanation of symbols]

1 ... Door, 2 ... Wall, 2a ... Outer frame, 3 ... Floor, 4 ... Protective door device body, 5 ... Rod, 6 ... Rod cap, 6a ... Screw, 7 ... Airtight rubber, 8, 9 ... Lead plate, 10 … Screws, 11
... Patch plate, 12 ... Screw, 13 ... Outer case, 13a ... Hole, 14 ... Inner case, 14a ... Hole, 15, 16 ... Leaf spring, 17 ... Fixed seat, 18 ...
Connection piece, 19 ... Connection seat, 20 ... Engagement frame, 21 ... Storage frame, 2
2, 23 ... Retaining shaft, 24 ... Locking claw, 25 ... Mohair, 26 ... Locking claw, 27 ... Locking groove, 28 ... Leaf spring stop shaft, 29 ... Stop shaft, 30 ...
Rod rod, 31 ... Stop shaft, 32 ... Screw rod, 32a ... Screw, 33 ...
Retaining ring, 34 ... Anti-rotation spring, 35 ... Fixing screw, 36 ...
Spring restraining piece, A ... Room, B ... External

Claims (4)

[Claims] 1. A plurality of leaf springs which are pressed downward in the width direction of the door and curved downward can be connected to the bottom of the door, and one end of the connected leaf springs is fixed to the door and the other end is fixed. And a drive member connected to the door, and having a length corresponding to the width of the door, and having a shielding member that is engaged with the leaf spring and is hung at a plurality of fulcrums, corresponding to the opening / closing operation of the door. A protective door device, wherein a drive member is configured to extend or bend the leaf spring to move up and down the shielding member. 2. The protective door device according to claim 1, wherein the shielding member has a lead material over its entire length. 3. The protective door device according to claim 1, wherein the shielding member has a member in which lead and rubber are kneaded over the entire length. 4. The protective door device according to claim 1, wherein the shielding member is made of a rubber material over the entire length.