JP3685493B2 - Floor lifting mechanism in bed equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor raising / lowering mechanism in a bed apparatus, and more particularly to a floor raising / lowering mechanism in a bed apparatus that simplifies the mechanism and is suitable for lowering the floor.
[0002]
[Prior art]
Recent bed apparatuses have been lowered not only in hospitals but also in home use, and for this reason, those equipped with lifting means are increasing. By providing this lifting / lowering means, it is easy to use for both the bed user and the caregiver.
A so-called bell crank type lifting mechanism having a link structure is often used for such lifting means. In this elevating mechanism, the head side high / low link is provided near the bed head, the foot side high / low link is provided near the foot side, and the head side high / low link and the foot side high / low link are connected with an interlocking rod so that they can be operated synchronously. The head side high / low link is pushed in by an actuator which is a driving means, and the head side high / low link and the foot side high / low link are interlocked to move the floor up and down.
[0003]
[Problems to be solved by the invention]
Therefore, since these head side and foot side high / low links exist, there is a limit to further lowering the floor. Further, depending on the design standard of the link, a great load is applied to the actuator as the driving means.
The present invention has been proposed from such a background, and it is an object of the present invention to provide a floor raising / lowering mechanism in a bed apparatus that is suitable for lowering the floor by a novel mechanism that is not based on a bell crank type lifting mechanism. To do.
[0004]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present invention, in claim 1, a support column is erected adjacent to the main frame supporting the floor on the base unit of the bed apparatus, and one end side of the main frame A first guide wheel is provided on the lower surface side in the vicinity, and a second guide wheel is provided on the other end side of the main frame, and one end side of a linear member is connected to the upper portion of the support column. The other end side of the linear member is connected to the base portion via the second guide wheel to stretch the linear member, and the end side of the main frame facing the support column is A floor raising / lowering mechanism in a bed apparatus configured to be supported so as to be lifted / lowered by a lifting / lowering driving means disposed on the base is proposed.
Further, in the present invention, in claim 2, a support column is erected on the base portion of the bed apparatus adjacent to the main frame that supports the floor, and the first frame is formed on the lower surface near one end of the main frame. While providing a guide wheel, second and third guide wheels are disposed on the other end side of the main frame, and one end side of a linear member is connected to the upper portion of the support column to connect the first, second, and second guide wheels. The other end side of the linear member is connected to the base portion via the three guide wheels to stretch the linear member, and the end portion side of the main frame facing the support column portion is connected to the base portion. A floor raising / lowering mechanism in a bed apparatus configured to be supported so as to be lifted / lowered by a lifting / lowering driving means disposed on a table is proposed.
According to the present invention, in claim 3, the first guide wheel, the second guide wheel, and the third guide wheel are disposed in the vicinity of both ends in the longitudinal direction of the main frame, and the third guide wheel is close to the second guide car. The bed apparatus is arranged such that the linear member is stretched over the lower outer peripheries of the first guide car and the second guide car and is stretched over the upper outer perimeter of the third guide car. A floor lifting mechanism is proposed.
According to a fourth aspect of the present invention, there is provided a floor lifting mechanism in a bed apparatus in which the first to third guide wheels are sprockets and the linear member is a chain.
According to a fifth aspect of the present invention, there is provided a floor raising / lowering mechanism in a bed apparatus in which the first to third guide wheels are pulleys and the linear member is a wire. Furthermore, in this invention, the said raising / lowering drive means proposes the floor raising / lowering mechanism in the bed apparatus which is an electric linear motion drive mechanism in Claim 6.
[0005]
According to Claims 1 and 2, the support column is erected adjacent to the main frame, so that the minimum support height of the main frame is not determined, and is interposed between the base unit and the main frame. The minimum support height of the main frame is determined according to the lifting drive means.
The load from the main frame is divided into the linear member side connected to the upper part of the support column and the elevating drive means, and the elevating drive means is driven against this divided load, so that the main frame can be raised and lowered. it can.
[0006]
According to the third aspect, the load from the main frame is divided in the vicinity of both ends in the longitudinal direction of the main frame by the linear member having one end attached to the upper portion of the support column and the lifting drive means, thereby reducing the load on the lifting drive means. Can do.
[0007]
According to the fourth aspect of the present invention, the chain is used for the linear member and the sprocket is used for the first to third guide wheels, so that the main frame is appropriately positioned and the lifting drive means and the linear member have sufficient strength. It can be supported to be movable up and down.
[0008]
According to the fifth aspect, if a pulley is used for the first to third guide wheels and a chain is used for the linear member with a wire, a smoother lifting operation is possible.
[0009]
According to the sixth aspect of the present invention, by adopting an electric linear motion drive mechanism for the elevating drive means, the shortest position of the electric drive means determines the minimum support height of the main frame.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the floor lifting mechanism in the bed apparatus according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a bed apparatus 1. This bed apparatus 1 has a support column 4 erected on a base 2 in the bed apparatus 1 adjacent to a main frame 3 that supports a floor (not shown), and a lower surface near one end of the main frame 3. The first guide wheel 5 is provided on the side, the second and third guide wheels 6 and 7 are disposed on the other end side of the main frame 3, and one end side of the linear member 8 is disposed on the support column 4. And the other end side of the linear member 8 is connected to the base portion 2 via the first, second and third guide wheels 5, 6 and 7, and the linear member 8 is stretched. At the same time, the end of the main frame 3 facing the support column 4 is supported by an elevating drive means 9 disposed on the base 2 so as to be movable up and down.
[0011]
The column part 4 is formed of a U-shaped frame, and one end of a linear member 8 to be described later is attached to the pair of vertical frames 4a and 4a and the upper beam part 4b.
[0012]
A pair of the first guide wheel 5 and the second and third guide wheels 6 and 7 are disposed near both ends in the longitudinal direction of the main frame 3, and the third guide wheel 7 is adjacent to the second guide wheel 6. The linear member 8 is stretched over the lower outer peripheries of the first guide wheel 5 and the second guide car 6 and stretched through the upper outer periphery of the third guide car 7. I have to.
For example, a sprocket can be used for the first to third guide wheels 5 to 7, and a chain that meshes with the first to third guide wheels 5 to 7 can be used for the linear member 8.
Of course, a normal pulley can be used for the first to third guide wheels 5 to 7, and a wire can be used as the linear member 8 in that case.
[0013]
The elevating drive means 9 can be an electric linear drive mechanism. That is, the elevating drive means 9 has the motor casing 9a side fixed on the base portion 2 so that the linear motion shaft 9b side is directed vertically upward, and the front end side of the linear motion shaft 9b is the end of the main frame 3. It is allowed to enter a square hole H provided between the second and third guide wheels 6 and 7 on the lower surface side of the vicinity and is fixed to the shaft.
In addition, since the full length dimension of the raising / lowering drive means 9 determines the minimum support height of the said main frame 3, it is so suitable that a full length dimension is short.
[0014]
In the floor lifting mechanism in the bed apparatus 1 as described above, the support column 4 is erected adjacent to the main frame 3 on one end side in the longitudinal direction of the base unit 2. The minimum support height of the main frame 3 is determined according to the lift drive means 9 interposed between the other end side in the longitudinal direction of the base portion 2 and the main frame 3.
The first to third guide wheels 5 to 7 are sprockets, and the linear member 8 is a chain, which is disposed in the vicinity of both ends in the longitudinal direction of the main frame 3, so there is no problem in strength. .
Further, when a pulley is used for the first to third guide wheels 5 to 7 and a wire is used for the linear member 8, the mechanism noise is minimal and the lifting and lowering operation is performed smoothly.
[0015]
When the elevating drive means 9 is driven, the linear member 8 and the elevating drive means 9 spanned between the base portion 2 and the support column portion 4 via the first to third guide wheels 5 to 7. The main frame 3 supported by the linear motion shaft 9b can be moved up and down.
That is, when the elevating drive means 9 is driven to extend the linear movement shaft 9b, the two linear members 8 are engaged with the teeth on the lower side of the first guide wheel 5 and the second guide wheel 6 while being in the first direction. The third guide wheel 7 is rotated while the second guide wheels 5 and 6 are rotated and further meshed with the upper teeth of the third guide wheel 7, and the meshed portion is connected to the upper beam portion 4 b of the column 4. Since it moves to the one end side of the linear member 8, a smooth raising operation is possible.
In this case, the load from the main frame 3 is divided in the vicinity of both ends in the longitudinal direction of the main frame 3 into the linear member 8 having one end attached to the upper beam portion 4b of the support column 4 and the lifting drive means 9. The load on the linear motion shaft 9b can be reduced.
[0016]
As mentioned above, although one embodiment was mentioned and demonstrated about the floor part raising / lowering mechanism in the bed apparatus 1, the structure which arrange | positions the guide wheel which hangs the linear member 8 on the both ends of the main frame 3 one each may be sufficient. (Not shown). In this case, the linear member 8 is passed over the lower outer periphery to the guide vehicle near the one end side of the main frame 3 on the support column 4 side, while the upper outer periphery is connected to the guide vehicle on the other end side of the main frame 3. To be stretched through.
[0017]
Even with such a configuration, the same effects as the above-described configuration can be obtained, and the mechanism can be further simplified.
[0018]
【The invention's effect】
As described above, according to the present invention, it can be mechanically simplified, and moreover, it can be said that it is an elevating mechanism suitable for lowering the floor as compared with a so-called bell crank type elevating mechanism having a link structure. .
[0019]
[Brief description of the drawings]
FIG. 1 is a perspective explanatory view showing a schematic configuration of a bed apparatus using a floor lifting mechanism according to the present invention.
FIG. 2 is a plan view of the bed apparatus shown in FIG.
FIG. 3 is an explanatory side view for explaining the operation of the floor lifting mechanism in the bed apparatus according to the present invention.
FIG. 4 is another side view for explaining the operation of the floor lifting mechanism in the bed apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bed apparatus 2 Base part 3 Main frame 4 Support | pillar part 4a Vertical frame 4b Upper beam part 5 1st guide wheel 6 2nd guide wheel 7 3rd guide wheel 8 Linear member 9 Lifting drive means 9a Motor casing 9b Linear motion shaft H square hole

Claims (6)

On the base portion of the bed apparatus, a support column is erected adjacent to the main frame that supports the floor, and a first guide wheel is provided on the lower surface near the one end of the main frame. A second guide wheel is disposed on the other end side, one end side of the linear member is connected to the upper portion of the support column, and the other end side of the linear member is connected to the other end via the first and second guide wheels. The linear member is stretched by connecting to a base part, and the end part side of the main frame facing the column part is supported by an elevating drive means disposed on the base part so as to be movable up and down. The floor raising / lowering mechanism in the bed apparatus characterized by the above-mentioned. On the base portion of the bed apparatus, a support column is erected adjacent to the main frame that supports the floor, and a first guide wheel is provided on the lower surface near the one end of the main frame. Second and third guide wheels are disposed on the other end side, and one end side of a linear member is connected to the upper portion of the support column, and the linear member is interposed via the first, second, and third guide wheels. The other end side of the main frame is connected to the base portion to stretch the linear member, and the end portion side of the main frame facing the support column is disposed on the base portion. Therefore, the floor part raising / lowering mechanism in the bed apparatus is characterized in that it is supported so as to be movable up and down. The first guide wheel, the second guide wheel, and the third guide wheel are respectively disposed in the vicinity of both ends in the longitudinal direction of the main frame, the third guide wheel is disposed near the second guide wheel, and the linear member is 3. The bed apparatus according to claim 2, wherein the bed apparatus is stretched over the lower outer periphery of the first guide car and the second guide car and is stretched through the upper outer periphery of the third guide car. Floor raising and lowering mechanism. The floor lifting mechanism in the bed apparatus according to any one of claims 1 to 3, wherein the first to third guide wheels are sprockets, and the linear member is a chain. The floor raising / lowering mechanism in a bed apparatus according to any one of claims 1 to 3, wherein the first to third guide wheels are pulleys, and the linear member is a wire. The floor raising / lowering mechanism in the bed apparatus according to claim 1, wherein the raising / lowering driving means is an electric linear motion driving mechanism.

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