JPH06254173A - Air aspirator mounting/demounting device - Google Patents

Abstract

PURPOSE:To provide an air aspirator mounting/demounting device which can mount and demount an air aspirator safely and speedily. CONSTITUTION:An air aspirator mounting/demounting device is equipped with a base frame 1, cylinder holder 11 which is installed so as to be fixed in the longitudinal direction of a cylinder 2 and so as to be release-enabled form forwardly, a pair of shoulder supports 31 which are installed in a shiftable manner in the longitudinal direction along both the sides of the fixed cylinder 102 on the base frame 1, and a cylinder holder driving means (operating lever 16 and a cam mechanism 17) for the cylinder release operation and fixing operation for the cylinder holder 11. Further, the air aspirator mounting/demounting device is constituted of a shoulder support urging means (compression spring 45) which always urges the shoulder supports 31 rearward, shoulder support engaging means (hooking plate 47) which engages the shoulder support 31 so as to be released to the front position from the front edge of the fixed cylinder 102 against the urging force of the shoulder support urging means, and an interlocking means (arm 48) which is interposed between the cylinder driving means and the shoulder support engaging means and allows the cylinder releasing operation of the former to be interlocked with the shoulder support engagement releasing operation of the latter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air respirator attaching / detaching device for attaching / detaching an air respirator in a cab of a fire engine when a fire engine is dispatched.

[0002]

2. Description of the Related Art As an air respirator attaching / detaching device, when the air respirator is stored, the cylinder is fixed and the backrest is placed in a use position for use by firefighters. In addition, the one in which the cylinder is detachably released to be used for wearing firefighters and the back contact is arranged at the storage position is conventionally used.

However, since the conventional attaching / detaching device employs a structure in which the back contact is manually swung up / down or left / right, there has been a problem that it requires a lot of operation and time for mounting the air respirator.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an air respirator attaching / detaching device capable of safely and quickly attaching / detaching the air respirator.

[0005]

An air breathing apparatus attaching / detaching device according to the present invention is fixed to a base frame, a cylinder holder provided on the base frame so that the cylinder can be longitudinally fixed and releasable forward, and fixed to the base frame. A pair of backrests that can be moved in the front-back direction along both sides of the cylinder, a cylinder holder drive means that causes the cylinder holder to release and fix the cylinder, and a backrest that constantly biases the backrest backwards. Urging means, a back contact locking means for releasably locking the back contact at a position forward of the front end of the fixed cylinder against the urging force of the back contact urging means, a cylinder holder driving means, and a back contact locking means. And the interlocking means for interlocking the former cylinder releasing operation and the latter back contact locking releasing operation.

[0006]

The air ventilator attachment / detachment device is fixedly installed behind the chair. When the air respirator is stowed (when not attached), pull out each back contact forward against the urging force of the back contact urging means and move it to the front position from the front end of the fixed cylinder by the back contact locking means. It is fixedly arranged, and at the same time, the cylinder is fixed to the cylinder holder, and in this state, the fire brigade member can lean on both backs and stably sit on the chair.

On the other hand, when the air respirator is attached, the cylinder releasing operation and the back-stop locking releasing operation are performed in an interlocking manner through the interlocking means in the sitting posture, and each back contact is performed by the back-contact biasing means. The fixed cylinder is moved to the rear position from the front end and the cylinder is released so that it can be taken out.In this state, the fire brigade can hold the cylinder on their backs with their shoulder belts, waist belts and chest belts, and move away from the seat. Become.

As the cylinder holder, for example, a publicly known one in which a clamp arm is projected from a pair of pivot beams vertically rotatably provided in parallel on a base frame can be adopted, and as the cylinder holder driving means, for example, a base can be adopted. It is possible to use a known one in which the swing of the operation lever pivotally attached to the frame is transmitted to each pivot beam via a cam mechanism or the like so that both clamp arms swing in opposite directions so that they can be opened and closed. As one specific example of the cylinder holder and the cylinder holder driving means, a trade name "Quick-
"Hold" (manufactured by Zico, USA) can be mentioned.

Each back contact may be attached to the base frame via a parallel crank mechanism so as to be movable in the front-rear direction in parallel to the base frame. In this parallel crank mechanism, each back contact moves in parallel to the base frame. It is regarded as an element. As the parallel crank mechanism, for example, X
It is preferable to use a link which is pivotally attached in a letter shape and which is connected to each of the base frame and each back contact by a rotating pair and a sliding pair.

Further, the back-contact urging means can preferably utilize, for example, springs, gravity, etc., and these forces may be applied so that the back-contact is always urged rearward.

The left and right shoulder belts that form an air respirator together with the cylinder, the decompressor connected to the cylinder via a pressure-resistant hose, and the face body connected to the decompressor via an elastic hose are also removable and housed. It is preferable to improve stability and the like.

For example, the left and right shoulder belt hangers are provided on the base frame so as to be able to move up and down on both sides of the fixed cylinder, and the shoulder belt hangers are mounted at the shoulder belt mounting position and at a storing position above the same when the air breathing apparatus is mounted and stored. You may make it move. In this case, the shoulder belts hung on the shoulder belt hangers are kept compact and stable in the upper position when the air respirator is stored, and are in a state where it is easy to pass through the arms and shoulders. As it descends to the position, it can be easily removed from the shoulder belt hanger while passing through the shoulder.

Further, a decompressor fixing tool is provided on the base frame so that the decompressor can be fixed and released, and the decompressor fixing tool can perform the decompressor releasing operation and the fixing operation when the air respirator is attached and stored, respectively. May be. In this case, the decompressor is compactly and stably held at a predetermined position when the air respirator is stored. When the decompressor is movably attached to one of the shoulder belts, it is necessary to ensure that the fixing and releasing operations of the decompressor fixture and the lifting and lowering operation of the shoulder belt hanger do not interfere inconveniently.

Further, a face piece holder is provided on the base frame so as to be able to fix and release the face piece between the top of the fixed cylinder and to allow the face piece holder to perform the face piece releasing operation and the fixing operation at the time of mounting and storing the air respirator, respectively. You may In this case, the face piece is held compactly and stably on the top of the fixed cylinder by the face piece holder when the air respirator is stored.

Each operation of the shoulder belt hanger, the decompressor fixing device, and the face pressing member is preferably linked with the operation of the cylinder holder or the back contact when the air breathing apparatus is mounted and stored. For example, the parallel crank mechanism is used. When used, the operations of raising and lowering, advancing and retracting, and swinging each link in the parallel crank mechanism can be suitably used for driving the shoulder belt hanger and the like.

[0016]

1 and 2 are a side view and a bottom view of an essential part of an air breathing apparatus attaching / detaching device according to an embodiment of the present invention.

In the figure, a plate-shaped base frame 1 is hung vertically behind a chair (not shown) in a cab of a fire engine, and a cylinder holder 11 is provided at the front center of the base frame 1.
Is provided so that a cylinder 102 (shown by a chain double-dashed line) attached to a stand frame 101 (shown by a chain double-dashed line) can be fixed in the vertical direction and can be released to the front. A backrest 31 is provided so as to be movable in the front-rear direction.

The cylinder 102 constitutes the main part of the air breathing apparatus, and is releasably fixed to the cylinder holder 11 while being always attached to the stand frame 101.

The cylinder holder 11 includes a support plate 13 vertically extending in front of the base frame 1, and a pair of pivot beams 14 having hexagonal cross sections rotatably supported in parallel at upper and lower ends of both sides of the support plate 13. And two pairs of upper and lower clamp arms 15 projecting forward from both pivot beams 14 so as to face each other. The cylinder holder 11 is an operation unit pivotally mounted on the base frame 1 so as to be vertically swingable. It is driven by a cylinder holder driving means including a lever 16 and a known cam mechanism 17 for converting the swing of the operating lever 16 into the rotational movement of both pivot beams 14 inward or outward.

The swinging of the operating lever 16 is performed by the cam mechanism 1
7 and the pivot beams 14 and the like to transmit to each clamp arm 15, and both clamp arms 15 swing in opposite directions so that they can be opened and closed. Therefore, the cylinder holder 11
When the air respirator is stored, the cylinder 102 is fixed by swinging the operation lever 16 downward, and when the air respirator is attached, the cylinder 102 is released by swinging the operation lever 16 upward.

The backrests 31 are attached to the base frame 1 via a parallel crank mechanism 32 so as to be movable in the front-rear direction in parallel with the base frame 1. Each of the parallel crank mechanisms 32 is composed of an outer link 35 and an inner link 36 pivotally mounted in an X shape through a pin 34, and both outer links 35 and both inner links 36 are integrated by bridging links 37 and 38, respectively. Has been done. The upper end of each outer link 35 is pivotally attached to the upper part of the corresponding back contact 31 via a pin 39, and the lower end is slidably contacted with a guide rail 40 at the lower part of the base frame 1 via a roller 41, and the upper end of each inner link 36 is Pin 42 on top of base frame 1
It is pivotally attached via the
The lower guide rail 43 is slidably contacted via a roller 44, the outer link 35 and the inner link 36 are provided with a compression coil spring 45 as a back contact biasing means, and a stopper 46 is provided on the front surface of the base frame 1. Has been done.

An L-shaped hook stop plate 47 as a back contact locking means is vertically provided on the bottom of the base frame 1 so that it can be engaged with and disengaged from the bridging link 37 at the hook portion 47a at the tip thereof, and the base of the operation lever 16 is further provided. Further, an arm 48 as an interlocking device is provided so as to project the hook stop plate 47 rearward at its pressing portion 47b when the operation lever 16 swings upward.

As the parallel crank mechanism 32 expands and contracts, the rollers 41 at the lower ends of the outer links 35 ascend and descend along the guide rails 40 and the outer links 35 swing, and at the same time, the central pin 34 is interposed. Each inner link 36
The rollers 44 at the lower end move up and down along the guide rails 43, and the inner links 36 swing, whereby the backrests 31 move in parallel with the base frame 1 in the front-rear direction. The parallel crank mechanisms 32 are constantly urged in the contracting direction by the compression coil springs 45, and therefore the backrest 31 is always urged rearward.

Therefore, when the air respirator is stored, as shown in FIG. 1, the operating lever 16 is in the downward swinging position, the cylinder holder 11 fixes the cylinder 102, and each back 3
1 is fixedly arranged at a position in front of the front end of the fixed cylinder 102 (shown by a solid line) against the biasing force of the compression coil spring 45 due to the engagement of the hook portion 47a of the hooking plate 47 and the bridging link 37. Further, when the air respirator is attached, the operation lever 16 is swung upward, the cylinder holder 11 releases the cylinder 102, and at the same time, the tip of the arm 48 causes the hook stop plate 47.
Is pressed rearward and the hook portion 47a of the hook stop plate 47 is disengaged from the bridge link 37, so that the parallel crank mechanisms 32 contact the upper plate of the inner link 36 and the stopper 46 by the compression coil springs 45. While being contracted all the way, each back contact 31 moves from the front end of the fixed cylinder 102 to the rear position (shown by a chain line).

Even if the compression coil spring 45 is not used in the above structure, each parallel crank mechanism 32 is constantly urged in the contracting direction by its own weight of the outer link 35, the inner link 36, etc. It may be a hitting and biasing means.

[0026]

As described above, in the air respirator attaching / detaching device according to the present invention, the back contact is divided with the cylinder sandwiched and is movable in the front-rear direction, so that the cylinder can be easily taken out. At the same time, the structure is simple and compact, and the air respirator can be attached and detached safely and quickly inside the cab of the fire engine.

[Brief description of drawings]

FIG. 1 is a side view of essential parts of an air breathing apparatus attaching / detaching device according to an embodiment of the present invention.

FIG. 2 is a bottom view of the essential parts of the air respiratory attachment / detachment device according to the embodiment of the present invention.

[Explanation of symbols]

 1 base frame 11 cylinder holder 16 operation lever 17 cam mechanism 31 back contact 32 parallel crank mechanism 45 compression coil spring 47 hook plate 48 arm 102 cylinder

Claims (3)

[Claims] 1. A base frame, a cylinder holder provided on the base frame so that the cylinder can be fixed in the longitudinal direction and releasable forward, and a pair provided on the base frame so as to be movable in the front-rear direction along both sides of the fixed cylinder. Back support, cylinder holder drive means for causing the cylinder holder to perform cylinder releasing and fixing operations, back contact urging means for constantly urging the back contact backward, and urging force of the back contact urging means. Against the rear end of the fixed cylinder in a releasable manner from the front end of the fixed cylinder, the cylinder holder driving means and the cylinder back locking means are interposed, and the former cylinder releasing operation and the latter cylinder An air respirator attachment / detachment device comprising interlocking means for interlocking with the hit lock release operation. 2. The air respirator attachment / detachment device according to claim 1, wherein the back contact is attached to the base frame through a parallel crank mechanism so as to be movable in the front-rear direction in parallel with the base frame. 3. The air respirator attaching / detaching device according to claim 1, wherein the back contact biasing means comprises a spring.