JPH074401B2 - Transport assist mechanism for beds, etc. - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyance assisting mechanism for beds and the like.

[0002]

2. Description of the Related Art A caster provided on a leg portion of a bed or the like is usually provided with a lock mechanism. When the bed is transported to a predetermined position, a pedal for operating the lock mechanism is depressed to move the caster. It locks and locks the bed in place.

[0003]

However, it is difficult for a nurse to move and operate such a bed by one person because a great amount of labor is required. In particular, the operation of changing the moving direction of the bed is not easy.
It is because the load of the entire bed is applied to the four-wheel casters,
This is because one of the four casters is used as the center of rotation when the direction is changed and the remaining casters are rotated to change the direction. That is, when changing the moving direction of the bed, one of the casters is fixed and the other caster is free, and the end of the bed is grasped and moved, but the caster on the fixed side is the center of rotation, Since the turning radius is set to the distance from the caster on the fixed side to the end of the bed to be operated, the force for changing the direction can be small, but the carrier must make a large turn. On the contrary, a large force is required to move the caster on the fixed side. Therefore, the applicant of the present invention can perform the direction change operation without providing a radius of rotation and a force for changing the direction by providing a center of rotation at the center (center of gravity) of the bed. I came to the point of view. From this point of view, the present invention intends to reduce the effort for changing direction by providing the center of rotation of the bed in the center of the bed to reduce the force for changing direction and the moving distance. It was proposed for the purpose of doing.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a stretchable auxiliary for supporting the bed or the like on the lower surface of the central portion of the floor of the bed or the like by grounding to the floor. It is characterized in that a leg is provided and an operation mechanism for operating the extension / contraction operation of the auxiliary leg is provided. Further, according to the present invention, a support pipe is attached to a lower surface of a central portion of a floor of a bed or the like, and a shaft member that is constantly urged in a direction projecting from the support pipe and extending is built in, and a floor surface is provided at a tip portion of the shaft member. A structure is provided in which a grounding member for grounding is provided, a wire member is connected to a rear end portion, and an operation lever for restraining / releasing the shaft member via the wire member is connected to an end portion of the wire member. is there.

[0005]

When the operating mechanism is operated to release the restraint of the shaft member via the wire member, the shaft member projects from the support pipe, and the grounding member at the tip of the shaft member grounds to the floor surface. As a result, the load of the entire bed is distributed to the grounding member at the tip of the shaft member in addition to the casters of the four wheels, so the load on the casters of the four wheels is reduced. Here, the carrier easily rotates the casters of the four wheels with the load reduced around the grounding member at the tip of the shaft member, and the distance from the tip of the shaft member to the end of the bed at the center of the bed is easily set as the radius of gyration. You can turn to.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a conveyance assisting mechanism for a bed or the like according to the present invention will be described below with reference to the accompanying drawings, with reference to an embodiment. 1 and 2, reference numeral 1 indicates a leg portion to which a conveyance assisting mechanism in a bed or the like according to the present invention is applied. That is, the conveyance assisting mechanism 2 provided on the leg portion 1 is provided with an extendable and retractable auxiliary leg 5 provided at the central portion of the carriage 4 to which the casters 3 are attached, and an extension / contraction operation of the auxiliary leg 5. The operation mechanism 6 and the operation mechanism 6 are substantially configured.

As shown in FIG. 3, the auxiliary leg 5 is a shaft which is urged by a spring member 8 to a support pipe 7 attached to the lower surface of the central portion of the carriage 4 so as to project from the support pipe 7 and constantly extend. The member 9 is built in. That is, the spring member 8 is interposed between the spring locking board 10 provided in the middle portion of the shaft member 9 and the closed end surface 11 of the support pipe 7, and constantly presses the spring locking board 10 toward the tip end side of the shaft member 9. The shaft member 9 penetrates through the lid member 12 so as to be able to move forward and backward, and a tip end portion thereof is provided with a grounding member 13 which is a rotation center portion when the direction is changed by grounding on the floor surface. The grounding member 13 is made of an elastic member, and the grounding portion with the floor surface is formed into a curved surface. Further, at the rear end portion of the shaft member 9, a wire member 14 that constitutes the operation mechanism 6 is provided.
Are pierced and connected through the closed end surface 11 of the support pipe 7.
The wire member 14 is slidably accommodated in a wire tube 15, and its tip end is connected to an operation lever 16 constituting an operation mechanism 6.

The operating lever 16 in the operating mechanism 6
Is for restraining / releasing the movement of the shaft member 9 by pulling the wire member 14 against the elastic force of the spring member 8 in the shaft member 9 and freeing it. The operation lever 16 can be provided on the lower surface of the frame 17 of the bed at a position where it can be easily operated.

In the transport assist mechanism 2 for a bed or the like having the above-described structure, when the bed is moved straight or retracted, the operating lever 16 of the operating mechanism 6 is operated to move the wire member 14 into the shaft member 9. The spring member 8 is retracted against the elastic force of the shaft member 9, the shaft member 9 is retracted to the support pipe 7, and the grounding member 13 is separated from the floor surface.

When the bed is swung to the left or right to change the direction, the operating lever 16 is reversely operated to bring the wire member 14 into a free state. Then the shaft member 9
Is the lid member 1 of the support pipe 7 due to the elastic force of the spring member 8.
2, the grounding member 13 at the tip of the shaft member 9 contacts the floor surface. As a result, in addition to the casters 3 of the four wheels, the load of the entire bed is reduced to the grounding member 1 at the tip of the shaft member 9.
The load on the casters 3 of the four wheels is reduced because the load is distributed to the casters 3. Here, the carrier rotates the casters 3 of the four wheels whose load is reduced around the grounding member 13 at the tip of the shaft member 9 so that the grounding member 13 at the tip of the shaft member 9 rotates.
It is possible to easily change the direction by setting the distance from the edge of the bed to the turning radius (see FIG. 4). In this way, since the direction can be changed with the auxiliary leg 5 at the center of the bed as the center of rotation, the handling is significantly improved, and even one nurse can
It can be operated sufficiently.

By the way, when the bed suddenly reaches a place where the passage has a slope while the bed is being transported, the moving speed should not be slowed down and the opposite way up. Needs to be controlled so that it is not pushed in. In such a case, the operation lever 16 is immediately operated to bring the wire member 14 into a free state, and the shaft member 9 is set to the lid member 1 of the support pipe 7.
2 and the grounding member 1 at the tip of the shaft member 9
By grounding 3 to the floor, the bed can be supported by the auxiliary legs 5 and can be operated safely (see FIG. 5).

[0012]

As described above, according to the present invention, by grounding the auxiliary legs provided at the center of the bed, the entire load is distributed to the auxiliary legs in addition to the four-wheel casters. Since the load applied to the casters is reduced and the direction of the auxiliary leg is changed around the rotation center, even one nurse can easily change the direction. Further, even if the vehicle approaches a sloped passage during transportation, the auxiliary leg is grounded, so that the bed can be supported on the sloped floor surface, so that the handling safety is greatly improved.

[0013]

[Brief description of drawings]

FIG. 1 is a side view of a leg portion of a bed or the like to which a conveyance assisting mechanism of the bed or the like according to the present invention is applied.

2 is an explanatory plan view of a leg portion shown in FIG. 1. FIG.

FIG. 3 is a mechanism explanatory view of the transport assist mechanism shown in FIG.

FIG. 4 is a plan view illustrating the operation of the transport assist mechanism in the bed or the like according to the present invention.

FIG. 5 is a plan view illustrating the operation of the transport assist mechanism in the bed or the like according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Leg 2 Transfer assist mechanism 3 Castor 4 Cart 5 Auxiliary leg 6 Operating mechanism 7 Strut pipe 8 Spring member 9 Shaft member 10 Spring locking board 11 Closed end face 12 Lid member 13 Grounding member 14 Wire member 15 Wire tube 16 Operating lever 17 flame

Claims (2)

[Claims] 1. An operation mechanism for operating an extension / contraction operation of the auxiliary leg, which is provided on the lower surface of the central portion of the floor of the bed or the like, and which is extendable / extensible for supporting the bed or the like by contacting the floor. A conveyance assisting mechanism in a bed or the like characterized by being provided with. 2. A support pipe is attached to a lower surface of a central portion of a floor of a bed or the like, and a shaft member which is constantly biased in a direction projecting from the support pipe and extending therein is built in, and the tip end of the shaft member is attached to the floor surface. A grounding member for grounding is provided, a wire member is connected to a rear end portion, and an operation lever for restraining / releasing the shaft member via the wire member is connected to an end portion of the wire member. Transport assist mechanism for beds, etc.