JP2543472B2 - Stretcher transfer device installed in vehicle for transporting injured persons - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on a vehicle for transporting a sick person, such as an ambulance, and has a stretcher transfer provided on a vehicle for transporting a sick person so that a traveling stretcher can be easily loaded and unloaded. Regarding the device.

[0002]

2. Description of the Related Art Generally, in order to transfer a traveling stretcher equipped with wheels (hereinafter referred to as a stretcher) to an ambulance or the like, a stretcher stand is provided inside the ambulance. A conventional stretcher mount is roughly composed of a base fixed to a floor in an ambulance and a stretcher transfer part having an extendable rail plate and swingably supported on the front and rear sides of the base. .

When the stretcher is transferred to the above-mentioned stretcher mount, the stretcher transfer section is tilted backward and the rail plate is pulled out, and then the ambulance crew pushes the stretcher to sequentially move the front wheels. It is designed to be pushed up on the rail plate.

[0004]

By the way, all the work of transferring the stretcher onto the conventional stretcher mount depends on the power of the emergency personnel, but it is not possible to transfer the stretcher carrying an adult victim. It is a heavy burden for emergency personnel, causes back pain, and hinders the efficiency of urgent work.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible to eliminate the burden of emergency personnel and the like, and
The present invention relates to a stretcher transfer device for a vehicle for transporting a patient, which enables quick transfer of the stretcher.

[0006]

SUMMARY OF THE INVENTION The present invention, which is constructed to solve the above-mentioned problems, has a base which is located inside a vehicle for transporting a patient and is fixed to the vehicle body, and an undulating mechanism on the base. A stretcher transfer device comprising: a stretcher mount supported via a section, the front and rear sides of which can be tilted; and a stretcher transfer mechanism for transferring the stretcher onto the stretcher mount, the stretcher transfer mechanism comprising: Is a guide rail fixed to the stretcher frame along the front-rear direction, a stretcher engagement portion located on the front side in the traveling direction, and a traction slider supported by the guide rail so as to be movable back and forth, and the stretcher engagement. A stretcher lock portion that can be retracted from the pulling slider to lock the stretcher between the pulling slider and the pulling slider. An elastic member which is stretched between the elastic members and which constantly urges the stretcher lock portion in a direction projecting from the pulling slider, and a resilient member which is fixedly installed on the rear end side of the stretcher mount or the guide rail. A lock releasing portion for pressing and fitting the stretcher lock portion into the pulling slider against the force, and a forward and backward movement of the pulling slider between a position of the lock releasing portion and a position on the front end side of the guide rail. And a slider drive mechanism having a drive source.

[0007]

[Function] When the stretcher is pushed up to the stretcher frame which is tilted backward, the stretcher lock portion is once pushed down by the stretcher, but it is restored by the spring force of the lock portion protruding spring, and the stretcher engagement portion and stretcher lock portion Hold the stretcher between. Then, the slider drive mechanism is actuated to move the towed slider forward, thereby pulling up the stretcher onto the stretcher stand.

On the other hand, when the stretcher is lowered from the stretcher mount, the stretcher mount is tilted to actuate the slider driving mechanism and the tow slider is moved backward, so that the stretcher descends due to its own weight. When the tow slider moves to a predetermined position, the locker releases the stretcher lock portion to release the stretcher from the tow slider.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a base which is located in a patient accommodation room of an ambulance and fixed to a vehicle floor A.

Reference numeral 2 denotes an undulating mechanism portion axially mounted on the base 1. The undulating mechanism portion 2 is fixed to the upper center of the base 1 and has guide grooves 3A and 3A on one side in the width direction (one is not shown). And a guide groove 3A of the fixed guide portion 3
A pair of front and rear support sliders 4 and 4 whose lower ends are slidably engaged with each other, one end of which is axially supported on the front and rear ends of the base 1 in the longitudinal direction, and the other end of which is the respective support sliders 4 and 4. A pair of front and rear link members 5, 5 which are axially attached to the middle of the
And a swinging support body 6 which is axially supported by a pair of front and rear support sliders 4, 4 located on both sides of the base 1 in the width direction and has guide rollers 6A, 6A, ... On both sides in the width direction. , 6
And the base end is pivotally attached to the base 1, and the tip end is the link member 5
A pair of front and rear hydraulic cylinders 7, 7
It consists of and.

Reference numeral 8 denotes a stretcher mount supported by the undulating mechanism 2. Reference numeral 9 is a rectangular slider support that constitutes the stretcher mount 8. The slider support 9 is the guide rollers 6A, 6A, ... Of the swing supports 6, 6.
It is possible to drive backwards as guided by.

, 10 are vibration-damping air dampers provided on the slider support 9 and 11 are stretcher mounts provided on the slider support 9 via the vibration-damping air dampers 10 and 10. The stretcher mounting body 11 includes a rectangular frame 11A and a frame 11A.
A pair of fixed transfer plates 11B, 11B, which are fixed to each other and spaced apart in the width direction, are provided slidably between the fixed transfer plates 11B and the frame 11A. Board 1
It is composed of a pair of movable transfer plates 11C, 11C that can be pulled out obliquely downward from the rear end of 1B.

Then, the stretcher frame 8 having the above-mentioned structure is adapted to advance from the swing support 6 toward the outside of the ambulance.

Next, reference numeral 12 denotes a stretcher transfer mechanism for transferring the stretcher B to the stretcher mount 8. Reference numerals 13 and 13 denote a pair of guide rails constituting the stretcher transfer mechanism 12, and the guide rails 13,
Reference numeral 13 is fixed to the frame 11A along the inner ends of the fixed transfer plates 11B and 11B.

Reference numeral 14 denotes a pulling slider which is supported by the guide rails 13 and 13 so as to be able to move back and forth. Reference numeral 15 denotes a carriage that constitutes the towing slider 14, and the carriage 15 has a body 15A having a substantially plane shape and a shaft attached to both sides of the body 15A.
It is composed of a pair of front and rear wheels 15B, 15B, 15B, 15B rolling on the guide rails 13, 13 and a pair of hooks 15C, 15C fixed to both sides of the carriage 15 in the width direction. Reference numerals 16 and 16 denote a pair of stretcher engaging portions formed in a substantially U-shaped cross section.
6 is fixed to the front upper part of the traveling direction of the trolley 15A.

On the other hand, reference numeral 17 denotes a stretcher lock portion provided on the vehicle body 15A via a support shaft 18 so as to face the stretcher engagement portion 16, and the stretcher lock portion 1 is provided.
7 is an inclined surface 17A rising from the rear end side to the front end side,
The inclined surface 17A is bent downward in a substantially L-shape from the front end thereof, and has a stopper edge 17B whose front end side protruding in the horizontal direction abuts on the vehicle body 15A.

Further, 19 is the stretcher lock portion 1
7 shows a lock portion projecting spring consisting of a tension spring that constantly urges 7 to face the stretcher engaging portion 16, and the lock portion projecting spring 19 is stretched between the carriage 15 and the stretcher lock portion 17. I am doing it.

Next, reference numeral 20 denotes a lock release bar for pressing the stretcher lock portion 17 into the pulling slider 14. The lock release bar 20 is located at the center of the rear end side of the stretcher mount 11 and has a base end side 20A fixed thereto, and a free end end side 20B extends forward.

Further, 21 is a pulling slider 1 between the lock release bar 20 and the position on the front end side of the guide rail 13.
4 shows a slider driving mechanism for moving the No. 4 forward and backward. Reference numeral 22 denotes the slider driving mechanism 21, which is a hydraulic cylinder fixed to the center of the front side of the frame 11A of the stretcher mount 11, and the cylinder rod 22A of which is adapted to advance and retract toward the rear of the stretcher mount 11. There is.

Reference numerals 23 and 23 denote a pair of movable pulleys axially supported by a carrier 24 fixed to the tip of the cylinder rod 22A, and 25 and 25 support shafts 2 on the front end side of the frame 11A.
6, a pair of front constant pulleys provided via the support shafts 28, 28, 28 on the rear end side of the frame 11A. .

Reference numeral 29 denotes a drive wire for causing the pulling slider 14 to travel by the reciprocating movement of the cylinder rod 22A. The drive wire 29 has both ends 29A, 29A.
Is hooked on the hook 15C of the tow slider 14, and the intermediate portion is wound around the front constant pulley 25, the rear constant pulley 27, and the movable pulley 23 in the order shown in FIG.

Further, reference numerals 30 and 31 denote a slider stop limit switch and a slider start limit switch respectively mounted on the hydraulic cylinder 22 via a mounting bracket. The switches 30 and 31 are connected to an electric motor that drives a hydraulic pump that supplies hydraulic oil to the hydraulic cylinder 22. A control switch device (not shown) having a pulling switch, a lowering switch, and a standby switch is connected to the electric motor.

Thus, the slider drive mechanism 2 of this embodiment
Reference numeral 1 denotes a hydraulic cylinder 22, moving pulleys 23, 23 pivotally supported at the tip of a cylinder rod 22A of the hydraulic cylinder 22 via a carrier 24, front fixed pulleys 25, 25 pivotally supported at the front end side of the frame 11A, and the frame 11A. Rear fixed pulleys 27, 27, 27 pivotally supported on the rear end side and both end sides 29A, 2
9A is locked to the traction slider 14, and a midway portion thereof is a drive wire 29 wound between the pulleys 23, 25 and 27,
It is composed of a slider stop limit switch 30 and a slider start limit switch 31.

Next, the operation of the apparatus of this embodiment having the above structure will be described. 5 to 10 show a case where the stretcher B is transferred onto the stretcher mount 11.
At this time, the stretcher mount 8 is tilted rearward and downward by the undulating mechanism portion 2, and the stretcher mount 1
No. 1 is pulled out of the vehicle.

The stretcher lock portion 17 is in a state of being projected upward by the spring force of the lock portion projecting spring 19.

When the stretcher B is pushed up onto the stretcher frame 8 in the above state, the front wheel C is guided by the movable transfer plate 11C and the stretcher B is in a state where the front side is lifted. When the stretcher B is pushed as it is, the axle D of the front wheel C moves forward with the stretcher lock portion 17 being pushed down against the spring force of the lock portion protruding spring 19. When the axle D passes through the stretcher lock portion 17, the stretcher lock portion 17 returns to the state in which it is projected by the spring force of the lock portion projecting spring 19, whereby the axle D is stretched by the stretcher engaging portions 16, 16 and the stretcher lock portion 17. Held between and.

Thereafter, when the pulling switch of the control switch device is operated to drive the hydraulic cylinder 22 to retract the cylinder rod 22A, the movable pulleys 23, 23 move to the front side of the stretcher mount 8 together with the carrier 24. As a result, the towing slider 14 is attached to the guide rail 1
3 can be run forward and the stretcher B can be pulled up onto the stretcher mount 11.

When the towing slider 14 passes over the stop limit switch 30, the pump driving motor stops and the stretcher B is automatically positioned at a predetermined position on the stretcher mount 8. Then, by operating the up-and-down mechanism part 2 to make the stretcher mount 8 horizontal, the axle D of the stretcher B is aligned with the stretcher engagement part 1 of the stretcher B.
It is completely transferred onto the stretcher mount 8 while being held between 6 and 16 and the stretcher lock portion 17 (see FIG. 10).

On the other hand, when lowering the stretcher B from the stretcher mount 8, the reverse operation to the above is performed. That is, with the stretcher base 8 tilted backward, the descent switch is operated to drive the hydraulic cylinder 22 to drive the cylinder rod 2
Extend 2A. Movable pulleys 23 and 2 together with the carrier 24
As a result of the movement of 3 to the rear side of the stretcher mount 8, the traction slider 14 supporting the stretcher 8 travels on the guide rail 13 toward the rear side. Along with this, the stretcher B descends due to its own weight on the stretcher mount 11 that is tilted backward.

When the pulling slider 14 is further pulled down by the driving force of the hydraulic cylinder 22, the stretcher lock portion 17 is pushed down by the lock release bar 20 as shown in FIGS. 11 to 13. At this time, the slider stop limit switch 31 operates to stop the towing slider 14, the axle D is released as shown in FIG. 14, and the stretcher B descends from the stretcher frame 8 to the ground or the like by its own weight.

When the stretcher B is separated from the stretcher base 8, the standby switch is operated to move the puller slider 14 forward by the distance that the stretcher lock portion 17 is released from the lock release bar 20, and the stretcher lock portion 17 is projected. Then, it is ready for the next stretcher transfer work.

According to the above-described embodiment, the slider drive mechanism 21 includes the movable pulleys 23, 23 and the constant pulleys 25, 25, 27.
Since 27 and 27 are used, it is possible to use the hydraulic cylinder 22 having a stroke amount which is about half the travel distance of the towing slider 14, and it is possible to mount the stretcher transfer device on an emergency vehicle having a limited mounting space. There is.

In this embodiment, the slider drive mechanism 21 is used.
Although the hydraulic cylinder 22 is used as the drive source of the above, an electric motor may be used.

[0035]

The present invention has been described in detail above, and when the stretcher is transferred to a vehicle for transporting a sick person, the stretcher can be mounted by simply engaging the stretcher between the tow slider and the stretcher lock portion. Since it is configured to be pulled up by a slider drive mechanism that uses a drive source such as hydraulic pressure or electric power, it can be easily and quickly transferred even by a heavy stretcher on which a patient is injured. The work load of can be significantly reduced, and the transfer work can be performed quickly.

Further, the stretcher engages with the pulling slider and the stretcher lock portion by only slightly pushing it up on the stretcher base, while the puller is automatically released by simply lowering the pulling slider to the position of the unlock portion. With this configuration, it is possible to carry in and out the injured person extremely quickly and easily.

[Brief description of drawings]

FIG. 1 is a side view of a stretcher transfer device according to an embodiment of the present invention.

FIG. 2 is a plan view of a stretcher transfer device.

FIG. 3 is a perspective view showing an overall configuration of a slider drive mechanism that constitutes a stretcher transfer device.

FIG. 4 is a side view of the traction slider.

FIG. 5 is an operation explanatory view showing a state in which the stretcher is transferred onto the stretcher mount.

FIG. 6 is an operation explanatory view showing a state where the stretcher is brought close to the pulling slider.

FIG. 7 is an operation explanatory view showing a state in which the stretcher axle pushes down the stretcher lock portion.

FIG. 8 is an operation explanatory view showing a state in which the stretcher is engaged with the stretcher lock portion.

FIG. 9 is a partially enlarged explanatory view showing a state in which the axle is engaged with the stretcher lock portion.

FIG. 10 is an explanatory diagram showing a state in which a stretcher is transferred onto a stretcher mount.

FIG. 11 is a partially enlarged explanatory view showing a state where the stretcher is being lowered from the stretcher mount.

FIG. 12 is a partially enlarged explanatory view showing a state where the descending stretcher lock portion is being pushed down by the lock release bar.

FIG. 13 is a partially enlarged explanatory view showing a state where the stretcher lock portion is pushed down by the lock release bar.

FIG. 14 is a partially enlarged explanatory view showing a state in which the stretcher is released from the stretcher lock portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 base 2 undulation mechanism part 8 stretcher mount 12 stretcher transfer mechanism 13 guide rail 14 traction slider 16 stretcher engagement part 17 stretcher lock part 19 lock part protruding spring 20 lock release bar 21 slider drive mechanism B stretcher

Claims (1)

(57) [Claims] 1. A base which is located inside a vehicle for transporting a victim and fixed to a vehicle body, and a stretcher mount which is supported by the base via a undulating mechanism section and whose front and rear sides are tiltable.
A stretcher transfer device comprising a stretcher transfer mechanism for transferring a stretcher onto the stretcher mount, wherein the stretcher transfer mechanism comprises a guide rail fixedly mounted on the stretcher mount along the front-rear direction, and Has a stretcher engaging portion located on the front side in the direction, and is retractable to and from the towing slider so as to lock the stretcher between the pulling slider supported by the guide rail so as to be movable back and forth and the stretcher engaging portion. The stretcher lock portion provided, an elastic member that is stretched between the pulling slider and the stretcher lock portion, and constantly biases the stretcher lock portion in a direction protruding from the pulling slider, and the stretcher mount. Alternatively, the stretcher lock portion is fixed to the rear end side of the guide rail, and the stretcher lock portion is moved forward against the elastic force of the elastic member. And a slider driving mechanism having a drive source for advancing and retracting the pulling slider between the position of the lock releasing portion and the position on the front end side of the guide rail. A stretcher transfer device provided in a vehicle for transporting an injured person.