JPH0464250B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a raising and lowering mechanism that raises and fixes at a predetermined angle an upper body bed that is assembled to a lower body bed that constitutes a bed so that it can be raised and lowered. It is related to.

(Prior Art) Various types of raising and lowering mechanisms have been proposed in the past for raising and fixing at a predetermined angle an upper body bed that is assembled in a manner that it can be raised and lowered to a lower body bed constituting the bed. . This type of conventional lifting mechanism is
One type uses a spring coiled around a rotating shaft that connects the lower body bed and the upper body bed, and another type uses a damper member connected to the lower end of the upper body bed and connects it to the frame side of the bed. There are also methods that are carried out with In this case, the damper member is a rod that can be expanded and contracted with respect to the main body, and is configured to ensure the necessary elastic force and expansion/contraction resistance by utilizing the pressure of the fluid housed in the main body and the flow path resistance of this fluid. This is what I did.

However, in the case of a raising/lowering mechanism using a coiled spring, the spring must be strong, so a relatively large storage space must be secured for the spring. Therefore, the bed itself becomes larger. On the other hand, since the damper member described above can be configured in a substantially straight line, there is no need to secure a storage space for the damper member by placing it under the bed, which is relatively convenient.

However, such a damper member that does not require storage space and has a simple structure has been developed, for example, by
As with the "work chair" shown in Publication No. 24116, there is no problem if the backrest is used within a certain narrow range of tilting, but if you want to use it with a wide range of tilting. is problematic. For example, when using the damper member to configure an upper body bed corresponding to the backrest so that it can be tilted down from a normal standing position to a horizontal state, which is approximately parallel to the lower body bed, Normally, the rod of the damper member is either fully extended or contracted. In this way, when the rods of the damper member are stretched or contracted to their maximum extent, the elastic force of this damper member is usually very small, and it is difficult to return the upper body bed from the horizontal position to the original position. When I try to wake up,
Since the return force of the damper member is weak, it is common for a person sleeping on the upper body bed to be unable to get up even if he or she tries to get up together with the upper body bed. Therefore,
When the upper body bed rises from a horizontal position, it is natural to consider providing another member to assist the return force of the damper member. The problem of storage space arises.

In addition, in a bed where the upper body bed is on the same plane as the lower body bed as described above, unlike a general chair or seat where the back rest is not in a horizontal state, the backrest is usually in a horizontal state. A considerable amount of force is required to raise the upper body from a bed placed on the bed. Moreover, the users of such beds were generally sick people;
When the user stands up from the upper body bed, a large amount of the user's weight is placed on it, and the user must not stand up suddenly. Furthermore, the speed at which the upper body bed rises must be able to be changed depending on the user's level of comfort.

In other words, the raising and lowering mechanism for a bed in which the upper body bed can be raised and lowered relative to the lower body bed must be able to produce as much force as possible so that the maximum force can be exerted at the initial stage of the upper body bed rising. Since this type of bed is intended primarily for sick people,
The upper body bed must be able to be raised and lowered depending on the user's medical condition.

Therefore, the inventors have intensively researched a mechanism that can recline the upper body bed as described above from a horizontal position to a standing position together with the person sleeping on it. If the directions of the forces are the same,
The present invention was completed based on the new finding that it is possible to provide a raising and lowering mechanism that can be stored in a limited storage space and has a simple configuration.

(Problems to be Solved by the Invention) The present invention has been made based on the above-mentioned circumstances, and the problems to be solved are the weakness of the return force in the conventional lifting mechanism, and complexity.

It is an object of the present invention to have sufficient force when returning the upper body bed from a horizontal state to the original position, to be able to store it in a limited space, and to be able to adjust the force. It is an object of the present invention to provide a simple mechanism for raising and lowering that can be raised and lowered freely.

(Means for Solving the Problems) The means taken by the first invention to solve the above problems are explained with reference to FIGS. 1 to 5 corresponding to the embodiments. Lower body bed 210 that supports the lower body of a person
For a bed 200, the upper body bed 220 is assembled so as to be raised and lowered by a connecting support shaft 221 to the end of the bed, and is raised and lowered within a predetermined angle range with respect to a horizontal state, and is fixed in that state. Raising mechanism 1
In 00, this raising/lowering mechanism 100 is rotatably connected to a connecting part 260 protruding from the center portion of the lower end side of the upper body bed 220, and is arranged below the lower body bed 210, and has a plurality of position adjustment holes 11a and the like. A long guide rod 11 having a fixing fitting 11b inserted through one of the guide rods 11, a spring 10 supported by the insertion of the guide rod 11, and a damper using fluid pressure and flow resistance. One end of the guide rod 11 and the damper member 20 is connected to the lower end of the upper body bed 220 via one connecting shaft 260, and the other end of the guide rod 11 is connected to a frame 230 that constitutes the bed 220. , and the other end of the damper member 20 is connected to the frame 230 located near the other end of the guide rod 11 in a manner that allows the spring 10 and the damper member 2 to be freely moved up and down.
1. A bed raising/lowering mechanism 100 characterized in that the center axis of the lower body bed 210 is substantially parallel to the lower part of the lower body bed 210.

That is, the raising/lowering mechanism 100 according to the first invention mainly includes a spring 10 supported by a guide rod 11 and a damper member 20 that utilizes fluid pressure and flow resistance. 10 and the damper member 20 are configured so that they are approximately parallel to each other at the lower part of the lower body bed 210, so that the raising/lowering mechanism 100 can raise the upper body bed 220 from the horizontal state to the original state. It has sufficient force when returning to the position and can be stored within a limited space.

In particular, the guide rod 11 that constitutes the raising/lowering mechanism 100 and guides and supports the spring 10 is rotatably connected to a connecting portion 260 that protrudes from the center portion of the lower end side of the upper body bed 220, so that the lower body bed 210
and a plurality of position adjustment holes 11a arranged below the
The spring 1 is configured as a long one having a fixing fitting 11b that is inserted through one of the springs 1 and 220.
The guidance and support of the 0 can be adjusted according to the physical strength or recovery level of the user.

Further, the raising/lowering mechanism 100 according to the second invention includes a lower body bed 210 that supports the lower body of the user.
For a bed 200, the upper body bed 220 is assembled so as to be raised and lowered by a connecting support shaft 221 to the end of the bed, and is raised and lowered within a predetermined angle range with respect to a horizontal state, and is fixed in that state. Raising mechanism 1
In 00, this raising/lowering mechanism 100 is rotatably connected to a connecting part 260 protruding from the center portion of the lower end side of the upper body bed 220, and is arranged below the lower body bed 210, and has a plurality of position adjustment holes 11a and the like. A long guide rod 11 having a fixing fitting 11b inserted through one of the guide rods 11, a spring 10 supported by the insertion of the guide rod 11, and a damper using fluid pressure and flow resistance. It is composed of a member 20 and an operation rod 30 that stops and releases the operation of the damper member 20, and one end of the guide rod 11 and the damper member 20 is connected to the lower end of the upper body bed 220 via one connecting shaft 260. The other end of the guide rod 11 is attached to a part of the frame 230 constituting the bed 220 in a freely removable manner, and the other end of the damper member 20 is located near the other end of the guide rod 11. The operating rod 30 is connected to the damper member 2 so that it can be raised and lowered freely.
0 and the center axes of the spring 10, the damper member 20, and the operating rod 30 are arranged substantially parallel to each other at the lower part of the lower body bed 210. Mechanism 1
00".

That is, the bed raising/lowering mechanism 100 according to the second invention mainly includes the spring 10 supported by the guide rod 11, the damper member 20 using fluid flow resistance, and the damper member 20. The center axis of the spring 10, the damper member 20, and the operating rod 30 is connected to the lower body bed 210.
The bed raising mechanism 100 applies sufficient force when returning the upper body bed 220 from a horizontal state to its original position. It can be stored in a limited space.

(Aspects of operation and use of the invention) By adopting the above-mentioned means, the present invention has the following effects.

First, in the raising/lowering mechanism 100 according to the first invention, the center axis of the spring 10, the guide rod 11 supporting the spring 11, and the damper member 20 is aligned with the lower body bed 2.
They are substantially parallel at the bottom of 10. Guide rod 11
The spring 10 and damper member 20 supported by It will come into play.

In other words, the spring 10 and the damper member 2
0 can fully exert its function even if it is stored in the extremely limited space at the bottom of the lower body bed 210.
is provided without causing any change in the overall structure of the bed 200 or complicating the structure of the bed 200. Moreover, since the tilting mechanism 100 is constructed so that there is no obstacle in the direction or range of the action of the spring 10 and damper member 20, the reclining action can be ensured. It is something to do.

Particularly important in the raising/lowering mechanism 100 is that the force of the spring 10 supported on the guide rod 11 can be freely changed without reducing the force of the damper member 20. That is, a plurality of position adjustment holes 11a are formed in the guide rod 11, and one of these position adjustment holes 11a is appropriately selected, and one end of the spring 10 comes into contact with the position adjustment hole 11a. This is because it is only necessary to insert the hole 11b. In other words, the fourth
As shown in the figure, the fixing fitting 11b is attached to the supporting member 12.
If one end of the spring 10 is inserted into the position adjustment hole 11a nearer to the hole 11a, the elastic force of the spring 10 becomes stronger, and the upper body bed 220
It is possible to stand up relatively quickly. On the contrary, if the fixing metal fitting 11b is inserted into the position adjustment hole 11a far from the support member 12, the elastic force of the spring 10 becomes strong enough to be used when the user is seriously ill, for example. be.

In addition, in the raising/lowering mechanism 100 according to the second invention, the center of the spring 10, the guide rod 11 that supports the spring 10, the damper member 20, and the operating rod 30 that stops and releases the operation of the damper member 20 The axes are substantially parallel at the lower part of the lower body bed 210. As a result, the spring 10 and the damper member 20 have the same effect as the first invention, and the operating rod 30 as a whole does not support the action of the spring 10 and the damper member 20, and the operation rod 30 has the same effect as the first invention. It works in the same way as the invention of .

That is, the spring 10, the damper member 20, and the operating rod 30 are housed in an extremely limited space at the bottom of the lower body bed 210, so that the raising/lowering mechanism 100 can
This is done without causing any change in the overall configuration of the 0. Moreover, since the raising/lowering mechanism 100 is constructed so that there is no obstacle in the action direction or range of the spring 10, damper member 20, and operating rod 30, the reclining mechanism 100 can be easily reclined. It works reliably.

And the raising/lowering mechanism 100 according to this second invention
Also in this case, the strength of the spring 10 can be changed freely, as in the case of the raising/lowering mechanism 100 of the first invention described above.

Next, embodiments of each invention will be described in detail below with reference to the drawings.

(Example) FIGS. 1 and 2 show a front view and a side view of a bed 200 equipped with a raising/lowering mechanism 100 according to the present invention. This bed 200 has a lower body bed 210 provided on a frame 230 that is movable by means such as casters, and an upper body bed 220 supported on the rear end side of the frame 230 so as to be able to rise and fall. That is, as shown in FIG. 3, the lower body bed 210 is horizontally supported and fixed on a frame 230 to horizontally support substantially the lower body of the user of the bed 200, and the upper body bed 2
Reference numeral 20 is connected via a connecting shaft 221 to support brackets 231 integrated on both rear sides of the frame 230 so as to be able to rise and fall. As a result, this bed 200 is made suitable for a seriously ill person to sleep on, for example, by folding the upper body bed 220 into a horizontal state and supporting it on the rear part of the frame 230. The upper body bed 220 can be raised up so that it is suitable for receiving a medical examination or having a meal.

This upper body bed 220 has a lifting mechanism 10.
0, it can be raised and lowered at a predetermined angle, and it can be fixed at that raised position. In addition, in the case of this bed 200, a support pipe 270 is formed approximately at the center of the frame 230, and a table 2 is attached to the upper end of either side of this support pipe 270.
The table 240 can be erected by inserting the 40 legs.

The raising/lowering mechanism 100 according to the first invention mainly includes a spring 10 supported by a guide rod 11.
and a damper member 20 that utilizes fluid pressure and flow path resistance. This raising/lowering mechanism 100 connects one end of the guide rod 11 and the damper member 20 to the lower end of the upper body bed 220 on one connecting shaft 2.
60, the other end of the guide rod 11 is removably assembled to a part of the frame 230 constituting the bed 200, and the other end of the damper member 20 is placed near the other end of the guide rod 11. The spring 10 and the damper member 20 are connected to a frame 230 so that they can be raised and lowered, and the center axes of the spring 10 and the damper member 20 are substantially parallel to each other at the lower part of the lower body bed 210.

The spring 10 used in this embodiment is a compression spring, and the strength of its elastic force is set by appropriately setting the position of the stopper on the guide rod 11 that supports it. It's becoming like that. Of course, as this spring 10,
If necessary, it may be constructed using other members that generate elastic force, such as a "tension spring" or a "bamboo spring".

Guide rod 11 supporting this spring 10
One end is connected to a connecting shaft 26 that is inserted into the lower end of the upper body bed 220, as shown in FIGS. 3 to 5.
0, and the other end of the guide rod 11 is attached to a support member 12 provided on a part of a frame 230 constituting the bed 200 so as to be freely inserted into and removed from the support member 12. That is, this support member 12 supports the frame 2 that constitutes the bed 200.
30, and an insertion hole 13 is formed in that part. The other end of the guide rod 11 is inserted into the insertion hole 13 of the support member 12 so as to be freely inserted and removed, and thereby the guide rod 11 moves within the insertion hole 13 according to the amount of tilting of the upper body bed 220. It is. Of course, the other end of the spring 10 comes into contact with this support member 12.

Further, as shown in FIGS. 4 and 5, the guide rod 11 that guides and supports the spring 10 has a plurality of position adjustment holes 11a formed in the middle thereof. As shown in FIG. 5, one of the holes 11a is provided with a fixing fitting 11.
b is inserted. This fixing metal fitting 11b
The other end of the spring 10 is hooked, and the strength of the elastic force of the spring 10 can be freely changed by appropriately selecting the insertion position with respect to each position adjustment hole 11a. It is.

The damper member 20 utilizes fluid pressure and fluid flow path resistance, and by controlling the movement of the working fluid stored in its main body by appropriate means, the rod 21 is moved at a constant speed and It is configured to be pushed out or stored using elastic force. 3 to 5, one end of this damper member 20 is similar to the guide rod 11 described above.
As shown in the figure, the upper body bed 220 is rotatably connected via one connecting shaft 260 inserted through the lower end thereof. That is, the connecting shaft 260 commonly supports both the damper member 20 and the guide rod 11 described above.

On the other hand, the other end of the damper member 20 can be raised and rotated by a support member 22 that is part of the frame 230 that constitutes the bed 200 and is fixed near the support member 12 for the guide rod 11. It is connected to. That is, this support member 22 is fixed to a frame 230 located near the support member 12, and the rod 21 of the damper member 20 is attached to the support member 22 via a support bracket 23 that is provided at the tip of the rod 21 so that it can be raised and lowered. It is connected to. In other words, the rod 21 of the damper member 20 is connected via a pin to a portion of the support bracket 23 that is not located in the direction of action of the rod 21, so that when the rod 21 is extended, it rotates below the support member 22. It is structured as follows.

As described above, the respective ends of the guide rod 11 and the damper member 20 supporting the spring 10 are connected to the connecting shaft 260 on the lower body bed 210 side and the frame 2.
30 side, each central axis of the spring 10 and the damper member 20 is connected to the lower body bed 210.
They are arranged so that they are substantially parallel to each other at the bottom.

In the raising/lowering mechanism 100 according to the first invention, a flexible member is used for stopping and releasing the damper member 20 (for pressing the release rod 24 described later). You can use a certain wire or the like.

In addition, the raising/lowering mechanism 100 according to the second invention includes a spring 10 supported by a guide rod 11, a damper member 20 that uses fluid pressure and flow resistance, and this damper member. The spring 10, the damper member 20, and the operating rod 30 are arranged as follows. That is, the respective ends of the guide rod 11 supporting the spring 10 and the damper member 20 are connected to the lower body bed 210 as in the first invention.
The operating rod 30, which is connected to the side connecting shaft 260 and the frame 230 side and constitutes the reclining mechanism 100 of the second invention, is arranged approximately parallel to the damper member 20, and the spring 10, the damper member 20, and The central axes of the operating rods 30 are configured to be substantially parallel to each other at the lower part of the lower body bed 210.

The operating rod 30 has both ends connected to the spring 10.
and is rotatably connected to a handle shaft 32 disposed below the front end of the damper member 20, and the handle shaft 32 is connected to the upper left and right sides of the lower body bed 210, as shown in FIGS. 1 and 4. It is rotated by rotating the handle 31 that protrudes at. Further, the rear end of this operating rod 30 is connected to a release rod 33 that is housed in a support bracket 23 of the damper member 20 so as to be able to be raised and folded, as shown in FIGS. 4 and 5. Therefore, the operating rod 30 is arranged substantially parallel to the damper member 20.

By the way, the release rod 33 to which the front end of the operating rod 30 is connected has a spring 34 suspended at the portion to which the operating rod 30 is connected, and the other end of this spring 34 is connected to the frame 230. . Further, as shown in FIG. 5, the inner end of the release rod 33 is located near the release rod 24 that stops and releases the damper member 20. When the rod 33 is raised to the right in FIG. 5, the release rod 24 is pressed to activate the damper member 20, and when the release rod 33 returns to its original state, the damper member 20 is activated. This is to stop the Furthermore, by hanging the spring 34 on the part of the release rod 33 to which the operating section 30 is connected, the release rod 3
3. Therefore, the operating rod 30 is always returned to a fixed position (the position where the operation of the damper member 20 is stopped).

(Effects of the Invention) As explained above, in the first invention, as exemplified in the above embodiment, "lower body bed 210 supporting the lower body of the user"
In addition, the other end of the damper member 20 is connected to a frame 230 located near the other end of the guide rod 11 so as to be freely raised and lowered, so that the central axes of the spring 10 and the damper member 20 are substantially parallel to each other at the lower part of the lower body bed 210. Its structural feature is that it has a sufficient force when returning the upper body bed 220 from a horizontal position to its original position.
This makes it possible to provide a simple raising/lowering mechanism 100 that can be accommodated within a limited space.

That is, the raising/lowering mechanism 10 according to the first invention
According to No. 0, the user can reliably drive the upper body bed 220 from a horizontal state to an upright state, and can freely adjust the guidance and support of the spring 10 according to the user's physical strength or degree of recovery. It is possible.

In other words, the raising/lowering mechanism 1 according to the first invention
According to No. 00, the upper body bed 220 is folded into a horizontal state, and is assembled so as to be raised and lowered by a connecting shaft 221 to the end thereof, and is raised and lowered within a predetermined angle range with respect to the horizontal state, and is fixed in that state. Lifting mechanism 1 for a bed 200 equipped with an upper body bed 220
In 00, this raising/lowering mechanism 100 is rotatably connected to a connecting part 260 protruding from the center portion of the lower end side of the upper body bed 220, and is arranged below the lower body bed 210, and has a plurality of position adjustment holes 11a and the like. A long guide rod 11 having a fixing fitting 11b inserted through one of the guide rods 11, a spring 10 supported by the insertion of the guide rod 11, and a damper using fluid pressure and flow resistance. One end of the guide rod 11 and the damper member 20 is connected to the lower end of the upper body bed 220 via one connecting shaft 260, and the other end of the guide rod 11 is connected to a frame 230 that constitutes the bed 200. When returning the damper member 20 to its original position after being removably assembled to a part of the damper member 20, even if the rod 21 of the damper member 20 is fully extended and its return force is insufficient, in that case the guide rod 11
Since the spring 10 supported by the spring 10 has accumulated sufficient return force, the return force of the spring 10 has sufficient force to return the upper body bed 220 to its original position. be. When the upper body bed 220 returns, a force is applied by the springs 10 that causes it to return to its original state suddenly. Instead, it returns smoothly.

Further, when it is desired to lower the upper body bed 220 to a horizontal state, the elastic force of the spring 10 becomes stronger as the upper body bed 220 becomes horizontal; If a person gradually puts his/her weight on the upper body bed 220, the upper body bed 220 can be easily lowered, so there is no problem when the upper body bed 220 is lowered to a horizontal position.

In addition, the raising/lowering mechanism 100 according to the second invention includes a spring 10 supported by a guide rod 11, a damper member 20 that utilizes fluid pressure and flow resistance, and this damper member 20. Since the damper member 20 and the damper member 20 are arranged substantially parallel to each other, the damper member 20 has the same effect as the first invention. The operating rod 30 itself does not get in the way at all when configuring the bed 200.

[Brief explanation of the drawing]

Fig. 1 is a front view of a bed employing the raising/lowering mechanism according to the present invention, Fig. 2 is a side view of the same, Fig. 3 is an exploded perspective view of the bed, and Fig. 4 is an enlarged view of the - line part in Fig. 3. FIG. 5 is a perspective view showing the structure of the raising and lowering mechanism, and FIG. 5 is an assembled plan view of the same. Explanation of symbols, 100... Lifting mechanism, 10... Spring, 11... Guide rod, 11a... Position adjustment hole, 11
b...fixing metal fittings, 12...supporting member, 13...insertion hole,
20... Damper member, 21... Rod, 22... Support member, 23... Support bracket, 24... Release rod,
30... Operating rod, 31... Handle, 32... Handle shaft, 33... Release rod, 34... Spring, 20
0...Bed, 210...Lower body sleeper, 220...Upper body sleeper, 230...Frame, 260...Connection shaft.

Claims (1)

[Scope of Claims] 1. The lower body bed supporting the lower body of the user is assembled to the end of the lower body bed by means of a connecting support shaft so that it can be raised and lowered, and is raised and lowered within a predetermined angular range with respect to the horizontal state. In the raising/lowering mechanism for a bed having an upper body bed fixed with a a long guide rod that is disposed in the guide rod and has a plurality of position adjustment holes and a fixing fitting that is inserted into one of the position adjustment holes; a spring that is supported by the guide rod being inserted; and a fluid pressure and a damper member using flow path resistance, one end of the guide rod and the damper member is connected to the lower end of the upper body bed via a connecting shaft, and the other end of the guide rod is connected to the lower end of the upper body bed. The spring and damper member are attached to a part of the constituent frame so as to be removable and removable, and the other end of the damper member is removably connected to the frame located near the other end of the guide rod. A raising/lowering mechanism for a bed, characterized in that the center axis is configured to be substantially parallel to the lower part of the lower body bed. 2. An upper body bed that is attached to the end of the lower body bed that supports the user's lower body so that it can be raised and lowered by a connecting shaft, and that is raised and lowered within a predetermined angle range relative to the horizontal state and is fixed in that state. A raising/lowering mechanism for a bed comprising: the raising/lowering mechanism is rotatably connected to a connecting portion protruding from the center portion of the lower end side of the upper body bed, and is disposed below the lower body bed, and a plurality of A long guide rod having a position adjustment hole and a fixing fitting inserted into one of the holes, a spring supported by the insertion of this guide rod, and the pressure and flow resistance of the fluid are used. the damper member, and an operation rod for stopping and releasing the operation of the damper member, and one end of the guide rod and the damper member is connected to the lower end of the upper body bed via one connecting shaft, The other end of the guide rod is removably attached to a part of the frame that constitutes the bed,
and the other end of the damper member is connected to the frame located near the other end of the guide rod so as to be able to rise and fall, and the operating rod is disposed approximately parallel to the damper member, and the spring and damper A raising and lowering mechanism for a bed, characterized in that the center axes of the members and the operating rods are configured to be substantially parallel to each other at the lower part of the lower body bed.