JPH0616734B2 - Elastic support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention elastically supports the end portion of a plate-like member that is laid across the width of a bed frame formed in a rectangular frame shape. Elastic support device for.

(Prior Art) There are various types of bed devices, and one of them is one in which a large number of plate-shaped bodies are installed along the width direction of a bed frame formed in a rectangular frame shape. .

In the bed apparatus having such a structure, both ends of the plate-like body are supported by springs in order to improve cushioning properties.

However, when the plate-shaped body is supported by the spring, the spring not only elastically deforms in the axial direction according to the load but also easily shakes in the lateral direction intersecting the axial direction. As a result, so-called rolling occurs, which may impair the user's comfort and the sleep comfort.

Also, when the user lies on the plate supported by the spring and the spring compresses the spring due to its weight, the reaction force acts on the user, so that the user's body is strongly supported by the plate. It may be compressed and make you feel uncomfortable. In particular, a heavy part such as the buttocks of the user's body has a large degree of compressing the spring, so that the reaction force thereof becomes large and the feeling of pressure becomes strong.

Further, the spring supporting the plate-like body inevitably vibrates at a high frequency when a load is applied, and it takes a considerable time for the vibration to be attenuated. Therefore, if the load applied to the plate-shaped body changes when the user rolls over, the high-frequency vibration of the spring supporting the plate-shaped body continues for a long time, which also reduces the comfort of sleeping. To do.

(Problems to be Solved by the Invention) As described above, when the plate-like body that is laid along the width direction of the bed frame is supported by the springs, not only does rolling cause a reduction in sleeping comfort, but also a load is applied. The user may be affected by the reaction force of the compressed spring, or the high-frequency vibration of the spring may continue for a long time due to a change in the load applied to the plate-shaped body, resulting in a decrease in sleep comfort.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the plate-like body from rolling laterally, and even if a load is applied, the reaction force thereof does not easily act on the user. ,
Another object of the present invention is to provide an elastic support device capable of supporting the plate-like body so that it is less likely to vibrate even if the load received changes.

[Structure of the Invention] (Means and Actions for Solving the Problems) In order to solve the above problems, the present invention relates to an elastic supporting device that elastically supports an end portion of a plate-shaped body, in which a fluid accommodating portion is provided. And an elastic body that is elastically deformed in the axial direction by the inflow and outflow of the fluid, and a guide body provided inside the elastic body along the axial direction and having a through hole for letting the fluid flow in and out at the lower end. A slider that is provided integrally with the elastic body and is movably guided by the upper side of the guide body, and that moves along the guide body in accordance with elastic deformation of the elastic body in the axial direction; And a flow rate control unit that sets the resistance of the fluid flowing out of the through hole portion higher than the resistance of the inflowing fluid.

With such a configuration, even if a load is applied to the plate-shaped body, it does not roll laterally, the reaction force applied to the user is reduced, and the frequency of vibration is smaller than that when a coil spring is used. The plate-like body can be elastically supported in a small size and in a state of being attenuated in a short time.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.
The bed apparatus shown in FIGS. 4 and 5 includes a bed frame 1. As shown in FIGS. 1 and 2, the bed frame 1 is formed of an angle member 2 into a rectangular frame shape.
A headboard 3 is vertically provided at one end in the longitudinal direction and a footboard 4 is vertically provided at the other end.

A plurality of elastic support members 5 as elastic support devices are provided upright on the upper surfaces of both sides of the bed frame 1 at predetermined intervals. This elastic support 5 is constructed as shown in FIGS. 1 and 2. That is, the elastic support body 5 has a bellows 6 as an elastic body formed of synthetic resin or metal so as to elastically expand and contract in the axial direction. A lower cap 7 made of a relatively soft synthetic resin is liquid-tightly fitted to the lower end surface of the bellows 6, and a soft upper cap 8 is also liquid-tightly fitted to the upper end thereof. Through holes 7a and 8a are formed in the central portions of the caps 7 and 8, respectively.

One end of a tubular guide body 9 made of hard synthetic resin or metal is fitted into the through hole portion 7a of the lower cap 7, and is fixed by a band 9a. A mounting port body 11 is fitted to an end portion of the guide body 9 protruding from the through hole portion 7a. The mounting port body 11 has a nozzle body 12 as a through hole.
Are integrally provided, and the nozzle body 12 is fitted in a mounting hole 13 formed in one side of the angle member 2 of the bed frame 1. One end of a connecting end tube 14 is connected to the tip of the nozzle body 12 protruding from the mounting hole 13. The other end of the connection end pipe 14 is connected to a communication pipe 15 forming a communication part. Communication pipe 15 is bed frame 1
Are provided along both sides of. Each communication pipe 15
One end is closed and the other end is connected to first and second pumps 16 and 17 provided below the frame 1 on the headboard 3 side, respectively, as shown in FIG.

The guide body 9 has a large diameter portion 9a on the lower side and a small diameter portion 9b on the upper side. A plurality of communication holes 18 are formed in the peripheral wall of the large-diameter portion 9a, a lower end of the small-diameter portion 9b is closed, and a lower end of a tubular slider 19 having an open upper end is slidably inserted. This slider 1
The upper end side of 9 is liquid-tightly fitted into the through hole 8a of the upper cap 8 and is fixed by the band 19a. A mounting member 21 is provided at the open end protruding from the through hole 8a. In this mounting member 21, a base portion 22 fitted and fixed to the upper end portion of the slider 19 and a hollow storage portion 24 provided on the base portion 22 via a shaft portion 23 are integrally made of a relatively soft synthetic resin. It is molded.

A pair of corresponding mounting members 2 on both sides of the frame 1
As shown in FIG. 3, both ends of a narrow first plate-like body 25 that is convexly curved upward are inserted into and supported by the first storage portion 24. Two waving bands 26 are provided on the upper surface side and the lower surface side of both ends of the first plate-shaped body 25, respectively, over the entire length in the longitudinal direction of the bed frame 1. A second plate-shaped body 27 is provided between a pair of adjacent first plate-shaped bodies 25. Each end of these second plate-like bodies 27 is sandwiched by two waving bands 26 as shown in FIG. That is, in the second plate-shaped body 27, one waving band 26 located on the upper surface side of the first plate-shaped body 25 is bonded to the lower surface side, and the other waving band 26 located on the lower surface side is bonded to the upper surface side. It is sandwiched by joining. Further, the second plate-shaped body 27 and each waving band 26 are fixed by a screw 28 to prevent the second plate-shaped body 25 from falling off.

A fluid L as a liquid is supplied to the elastic support 5 on one side in the width direction of the bed frame 1 by a first pump 16 via one communication pipe 15. Further, the liquid L is supplied to the elastic support 5 provided on the other side of the bed frame 1 by the second pump 17 via the other communication pipe 15. The liquid L is supplied to each elastic support 5 in a state where they are not fully extended. That is, when the liquid L is supplied to each elastic support 5, H _{1 in} FIG.
It is in a state where it can be extended from the height indicated by to the height indicated by H ₂ .

The nozzle body 1 is attached to the mounting body 11 at the lower end of the elastic support body 5.
The flow control valve 29 is provided in a state in which a part of the opening 2 is closed. The flow control valve 29 is made of a plate-shaped member that can bend only in the upward direction, and controls the amount of the liquid L in the bellows 6 flowing from the communication hole 18 to the communication pipe 15 when the elastic support 5 is compressed. It is regulated so that it hardly resists the flow in the opposite direction.

First and second plate-like bodies 2 installed on the bed frame 1
As shown in FIG. 4, the user U lies on his back on the sheets 5 and 27 through a thin sheet-like cushion material (not shown). A balance mechanism 31 shown in FIG. 3 is attached to each of the first plate-like members 25 at positions substantially corresponding to the back portion s and the buttocks portion d of the user U. The balance mechanism 31 includes a first lever 33 and a second lever 34 each having a long hole 32 at one end.
Have and. One ends of these levers 33 and 34 are slidably pivotally mounted by a first pin 35 through the elongated hole 32, and multiple ends of the levers 33 and 34 are fixed to the lower surfaces of both ends of the first plate-shaped body 25. The second pins 37 are pivotally attached to the brackets 36 through the elongated holes 34a. Also,
The middle portion of each plate 25 is pivotally attached to the second bracket 38 by a third pin 39. The second bracket 38 is erected on a lateral member 41 that is erected in the width direction of the bed frame 1.

In this way, if the balance mechanism 31 is provided on the first plate-shaped member 25, for example, when a load is applied to one end side of the first plate-shaped member 25 as shown by A in FIG. Plate 25
The other end of the first lever 33 connected to the third pin 3
It is pivotally displaced in the downward direction indicated by arrow x with 9 as a fulcrum. The rotation of the first lever 33 causes the second lever 34 to rotate in the arrow y direction. As a result, the other end of the second lever 34 pivotally attached to the first plate 25 is also displaced in the descending direction. That is, even if a load is applied only to one end side of the first plate-shaped body 25, both ends are displaced downward by substantially the same amount. Therefore, the first plate-shaped body 25 is moved in the width direction of the bed frame 1. It is possible to prevent it from being inclined and displaced.

In the bed apparatus configured as described above, when the user U lies on the first and second plate-like members 25 and 27 as shown in FIG. 4, heaviness such as the back s and the buttocks d of the user U is heavy. The part corresponding to the part receives a larger load than the other parts. The first plate-like body 2 in the portion that receives a large load
In the elastic support body 5 supporting both ends of the bellows 5, the slider 19 housed inside the bellows 6 is guided by the guide body 9 and slides downward, whereby the bellows 6 is compressed.

In this way, when the bellows 6 is compressed, the liquid L contained therein flows out through the nozzle body 12 and the connecting end pipe 14 to the communication pipe 15. Then, the liquid L flowing out to the communication pipe 15 is a bellows 6 of the elastic support 5 such as both ends in the longitudinal direction of the bed frame 1 which is an elastic support 5 that does not receive a large load and a portion corresponding to the leg of the user U. Flow into the inside and extend the bellows 6 of these elastic supports 5 to
The load applied to the plate-shaped body 25 is absorbed.

That is, the elastic support body 5 that receives a large load can transfer the liquid L contained in the bellows 6 to the other elastic support body 5.
The load is elastically absorbed by flowing into the bellows 6. At this time, even if the elastic support body 5 is compressed under a large load, it does not generate a reaction force corresponding thereto, so that the user U strongly presses a heavy portion such as the buttocks d and the back s. Is prevented.

The elastic support 5 that expands and contracts due to the flow of the liquid L is
Since the liquid L is incompressible and flows against the flow resistance, the liquid L expands and contracts gently and is not accompanied by vibration of high frequency unlike the coil spring. Therefore, the user U rarely feels uncomfortable due to the vibration.

Further, the flow rate control valve 29 provided on the nozzle body 12 of the elastic support body 5 makes the outflow resistance of the liquid L from the bellows 6 larger than the inflow resistance. Therefore, the elastic support 5 supporting the heavy part of the body of the user U slows down the outflow of the liquid L from the bellows 6, and prevents the heavy part of the user U from dropping suddenly. In addition, since the liquid L quickly flows into the elastic support body 5 that does not receive a large load, the elastic support body 5 corresponding to, for example, the leg portion, which is a light portion of the human body, expands quickly to ensure that portion. I will support you.

On the other hand, in the bellows 6 of the elastic support body 5, a guide body 9 made of a hard material and a slide 19 slidably inserted in the guide body 9 are provided. Therefore, the guide body 9 and the slider 19 prevent the bellows 6 from swinging laterally, which is a direction intersecting the axial direction. That is, even if the user U applies a lateral load to the elastic support body 5 by turning over on the first and second plate-like bodies 25 and 27, the bellows 6 is provided integrally therewith. Since the guide body 9 restricts the slider 19 from being displaced in the axial direction and swaying in the lateral direction, so-called swaying does not occur.

Although the bellows is used as the elastic body of the elastic support in the above-mentioned embodiment, a bellows other than the bellows may be used. Good. Further, the guide body and the slider may be provided outside the bellows. For example, the guide body may be a cylinder shape in which the bellows can be housed inside, and the slider may be a cylinder shape similarly slidably fitted in the bellows. .

[Effects of the Invention] As described above, according to the elastic support device of the present invention, the plate-like body does not roll because it does not swing in the lateral direction that intersects the axial direction unlike the coil spring. Since it can be supported in a state and a reaction force corresponding to the load received is not generated, the user does not press a heavy part of the body. Moreover, since the liquid contained inside the elastic support receives a load due to the flow, it is elastically deformed gently without vibrating at a high frequency like a coil spring, which provides good sleeping comfort. To be

Further, the resistance of the liquid flowing out from the inside of the elastic body is set higher than the resistance flowing in. Therefore, the deformation when compressed is performed gently, and the deformation when extended is performed quickly. Therefore, if it is used for supporting a plate-like body erected on a bed frame, for example, a heavy portion of the user's body is There are things such as preventing a sudden fall and being able to securely support a light part.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a longitudinal sectional view of an elastic support, Fig. 2 is a side view of the same, Fig. 3 is a side view of a balance mechanism, and Fig. 4 is used on a bed frame. FIG. 5 is a plan view of the bed frame as seen from the lower side, with the person lying on his / her back. 1 ... Bed frame, 5 ... Elastic support (elastic support device), 6 ... Bellows (elastic body), 9 ... Guide body, 1
9: slider, 25: first plate-shaped body.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuyuki Yamaguchi 1148 Nakagamicho, Akishima-shi, Tokyo Inside the Tokyo factory, France Bed Co., Ltd. (56) References JP-A-53-14990 (JP, A)

Claims (1)

[Claims] 1. An elastic supporting device for elastically supporting an end portion of a plate-shaped body, wherein the inside is a fluid accommodating portion, and the elastic body is elastically deformed in the axial direction when the fluid flows in and out. A guide body provided inside the elastic body along the axial direction and provided with a through hole portion for allowing a fluid to flow in and out at a lower end thereof, and movably integrally with the elastic body and guided by an upper side of the guide body. The slider that is provided and moves along the guide body according to the elastic deformation of the elastic body in the axial direction, and the resistance of the fluid that is provided in the guide body and that flows out from the through hole are higher than the resistance of the fluid that flows in. An elastic support device comprising: a set flow rate control means.