JP2016112080A - Bed with following/lifting function and sub mattress body used in such bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed with a following/lifting function which does not displace an upper side mattress body with respect to a lower side mattress body in operating the following/lifting function even if the lower side mattress body and upper side mattress body are not connected with each other and to provide a sub mattress body used in such a bed.SOLUTION: On a lower mattress 15 of a bed 10 with a following/lifting function, an upper mattress 1 is laid. Three flaps 4, 5 of the upper mattress 1 are inserted between the lower mattress 15 and a floor frame 12. When the following/lifting function is operated in such a state, large friction force acts on a lower half body side of the upper mattress 1 to keep a position of the lower mattress 15. On the other hand, an upper half body side of the upper mattress 1 slides upward relatively with respect to the lower mattress 15 not to compress an abdomen part of a care receiver.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a bed with a gage-up function capable of raising (raising) a mattress body on which a caregiver is sleeping so that the upper body of the caregiver who is a user can lean on, and such a bed. The present invention relates to a sub mattress body for use.

Conventionally, caregivers who have fallen in physical strength, such as sick people and elderly people, wake up their bodies from a sleeping state, considering the convenience of raising their bodies on the bed, for example, eating meals. To assist, a nursing bed with a gage-up function is used. Gage-up function is a nursing term, a function to assist in changing the posture of the person being cared for, by partially pushing up the mattress body to lift a part of the cared person's body or conversely A function that returns you to sleep. Specifically, a part of the frame disposed below the mattress body is raised by a manual or electric drive mechanism, and the mattress body is indirectly bent and raised by a pressing operation at that time. It is.
However, the following problems have arisen in the past when supporting such a bed with a gage-up function, in particular, for raising the upper body.
As shown in FIG. 9A, the mattress body is erected from the state where the mattress body is horizontally arranged on the frame so that the cared person can lie down. Considering a curved case, the outer surface of the mattress body expands, but the surface on which the cared person's body comes into contact (hereinafter referred to as the inner surface) is particularly compressed around the curved portion. Then, with this compression, in the cared person who is in contact with the back on the inner surface, the back is pressed downward by the compression force, and the force that the buttock is pulled in the direction of the curved part acts, as a result This causes a problem that the abdomen of the person is compressed. Conventionally, this type of compression is generally referred to as “undoing” and a caregiver inserts his / her hand into the back of the cared person to relieve the pressure and correct the abdominal pressure. It was.

JP 2014-97281 A

For this reason, some prior arts have been proposed in order to eliminate the trouble of performing the above-mentioned “back removal” when the mattress body in the bed with a gage-up function is curved. For example, in Patent Document 1, the mattress is composed of two upper and lower layers, the upper is a thin mattress, and a part of the lower mattress is connected and fixed. If comprised in this way, since an upper mattress slides relatively between lower mattresses, the malfunction that the above-mentioned caregiver's abdomen is pressed is eliminated, and sufficient elasticity of the mattress is eliminated. Can be secured with the lower mattress. Further, even if the mattress is repeatedly raised or laid down, the upper mattress is not displaced because both are connected.
However, in Patent Document 1, such an upper and lower two-layer mattress must be prepared. If it is simply installed without being connected, the upper mattress will shift as the gage up function continues to be used. However, there has been a request to save the labor of connecting and fixing the two upper and lower mattresses. In addition, it is useless to purchase two new mattresses so that the abdomen of the cared person is not compressed, so if only the upper mattress is prepared, the existing bed with a gage-up function is available. There has also been a demand for technology that can be used for mattresses.
The present invention is for solving the above-mentioned problems. The purpose is to provide a bed with a gage-up function that makes it difficult for the upper mattress body to be displaced with respect to the lower mattress body when operating the gage-up function without connecting the lower mattress body and the upper mattress body, and The object is to provide a sub-mattress body for use in such a bed.

As a first means for achieving the above object, a bed frame, a floor frame mounted on the bed frame, a bed main mattress body disposed on the floor frame, and the main mattress A sub-mattress body that is thinner than the main mattress body and is disposed on the upper layer of the main mattress body, and the floor frame is driven by a drive mechanism so that a portion that is displaced upward is provided. An upper body side of the main mattress body is pushed and raised by the pushing section, and the sub mattress body has a lower half body than the part of the main mattress body to be raised. The main mattress body and the sub mattress are caused to generate a larger friction than the upper body side by the vertical pressure on the side. That it has to provide a friction means for preventing misalignment between the body and the gist thereof.
In such a configuration, the drive mechanism is driven to displace the pushing portion of the floor frame, whereby the gage-up function is activated, and the main mattress body stands up with its upper body being pushed. At this time, the upper body side of the sub mattress body arranged on the main mattress body is also pushed by the upstanding portion of the main mattress body and stands up while sliding relatively. This prevents pressure on the cared person's abdomen. On the other hand, friction means is provided on the lower body side of the sub mattress body, and a particularly large pressure is applied in the vertical direction because the weight of the care receiver sleeping is applied to this region. Therefore, the holding force by the friction means is generated and the sub mattress body is not easily displaced, and the sub mattress body is held on the main mattress body.

In the present invention, “standing up” is a general term for standing up from a sleeping state, and is a concept of standing up even when the rising angle is shallow and is almost vertical.
The “drive mechanism” may be a mechanical structure operated by an electric drive source or may be manually operated.
The “floor frame” is a frame body on which the main mattress body is directly or indirectly placed and supported. For example, a plurality of divided portions are connected and driven by a driving mechanism. In such a form, the individual divided portions are displaced. For example, the main mattress body can be erected by pushing a part of such a divided portion upward as the pushing portion.
The “mattress body” may or may not be stored in the outer bag.
With regard to the “upper body” and “lower body”, in the present invention, when the cared person sleeps on the sub mattress body, the head side is the upper side, the foot is the lower side, and the upper body is the upper body with the upper side of the waist as a boundary. The lower side is the lower body. For example, the part where the buttocks is located is the lower body. Therefore, it can be said that the part where the upper body of the cared person is raised and the load of the buttocks is applied is already the lower body side.

Further, as a second means, the friction means is a pair of belt-like members arranged on the lower body side of the main mattress body in the sub mattress body and on the left and right side positions in the width direction. And the band is inserted between the main mattress body and the floor frame.
This further restricts the friction means. In such a configuration, in addition to the contact between the upper and lower mattress bodies, the belt-like body sandwiched between the main mattress body and the floor frame is also subjected to vertical pressure, and the holding power of the sub mattress body is increased. Will increase.
Here, the “strip-shaped body” is a member having a sufficient width with respect to a length made of a flexible material such as cloth. It is better that there are as many contact surfaces as possible, but it is good that the left and right do not overlap so that there is no step.
Further, as a third means, the gist of the belt-like body is that the sub mattress body is disposed at a position adjacent to a bent base when the main mattress body is raised.
With this configuration, the belt-like body is disposed in the vicinity (the region from the buttocks to the thigh) where the cared person's weight is the largest when the mattress stands up, and the sub mattress body is more securely attached to the main mattress. Will be held on.

The gist of the fourth means is that the ends of the pair of band-like bodies are connected to form an annular body, and the main mattress body is surrounded by the annular body.
With such a configuration, since the belt-like body is annular, the area that is pressed and held between the main mattress body and the floor frame is increased, so that the holding force of the sub mattress body is further increased. Further, since the belt-like body is annular, it is possible to prevent the belt-like body from shifting and hanging down in the left and right side directions of the bed.
Further, as a fifth means, the annular body is disposed to face an end portion on the lower half side of the sub mattress body, and a lower end portion of the annular body and the end portion on the lower half side of the sub mattress body are connected to each other. The gist is that they are connected by the body.
With such a configuration, the periphery and the lower end direction of the sub mattress body are surrounded by the annular body and the coupling body, and a housing portion for holding the main mattress body is configured. Accordingly, it is possible to prevent the sub mattress body from being displaced in the head direction (upper body direction) with respect to the main mattress body. Here, the “connecting body” may be a flexible material such as a cloth like the belt-shaped body, and may be a material such as a hard plastic frame. In short, what is necessary is just to restrict the free spreading of the annular body.

Further, as a sixth means, the gist is that at least one surface of the front and back surfaces of the belt-shaped body is a friction force application surface having a friction coefficient larger than that of the back surface of the sub mattress body.
When the belt-like body has such a frictional force imparting surface, the belt-like body generates a strong frictional force between the main mattress body and the floor frame. It will be held on the main mattress more securely.

Further, as a seventh means, the friction means is disposed on the lower body side of the main mattress body in the sub mattress body and on the lower body side end of the sub mattress body. The gist of the second strip is that the second strip is inserted between the main mattress body and the floor frame.
This further restricts the friction means. In such a configuration, in addition to the contact on the upper and lower mattress bodies, the belt-like body sandwiched between the upper and lower mattress bodies also receives vertical pressure, and the holding power of the sub mattress body is increased. Will increase. In particular, the sub mattress body can be prevented from shifting in the head direction (upper body direction) with respect to the main mattress body.
Further, as an eighth means, the gist of the invention is that at least one of the front and back surfaces of the second belt-like body has a frictional force imparting surface having a friction coefficient larger than that of the back surface of the sub mattress body.
Similar to the sixth means, when the belt-like body is provided, by forming such a frictional force imparting surface on the belt-like body, the belt-like body has a strong frictional force between the main mattress body and the floor frame. As a result, the sub mattress body is more securely held on the main mattress.

As a ninth means, the friction means is on the lower body side of the main mattress body in the sub mattress body, and is formed on the back surface of the second mattress. The gist is that the frictional force imparting surface has a larger coefficient of friction than the upper body side.
With such a configuration, a large amount of friction is applied to the lower body area where a load due to the weight of the cared person is always applied, regardless of whether the cared person is sleeping or in the state of raising the upper body. Therefore, the sub mattress body is less likely to be displaced from the main mattress body, and the holding force of the sub mattress body on the main mattress body is increased.
Further, as a tenth means, the gist is that the frictional force imparting surface is made of a fine rough rubber material.
With such a configuration, the contact area of the frictional force imparting surface is remarkably increased, so that the frictional force of the frictional force imparting surface is increased and the holding force is increased.

The eleventh means includes a bed frame, a floor frame mounted on the bed frame, and a main mattress body disposed on the floor frame, and the floor frame is driven by driving means. The floor frame includes a pushing portion having a portion that is displaced upward by being driven by a driving mechanism, and the upper portion of the main mattress body is driven by the pushing portion. Sub mattress body thinner than the main mattress body arranged on the main mattress body on the upper layer of the main mattress body used for a bed with a gage-up function configured such that the side is pushed and raised The sub mattress body is lower than the raised portion of the main mattress body. The gist of the invention is that friction means is provided on the body side so as to prevent the displacement between the main mattress body and the sub mattress body by generating a larger friction than the upper body side by the pressure in the vertical direction. .
By using such a sub mattress body, in a bed with a gage up function, the gage up function is activated by driving the drive mechanism and displacing the pushing portion of the floor frame. The upper body is pushed up and stands up. At that time, the upper body side of the sub mattress body arranged on the main mattress body also stands up while sliding relatively by the part where the main mattress body stands up. This prevents pressure on the cared person's abdomen. On the other hand, friction means is provided on the lower body side of the sub mattress body, and a particularly large pressure is applied in the vertical direction because the weight of the care receiver sleeping is applied to this region. Therefore, a holding force is generated by the friction means, and the sub mattress body is firmly held on the main mattress body.

  According to the present invention, when the upper body side of the main mattress body is erected or repeatedly laid down, the sub mattress body is not easily displaced on the main mattress body without connecting the sub mattress body to the main mattress body. Will be held firmly.

The perspective view seen from the back surface side of the upper mattress used for the bed with the gage up function of Embodiment 1. FIG. The perspective view of the state which set the upper mattress of Embodiment 1 on the lower mattress. Explanatory drawing of the state to which a care receiver is sleeping on the bed with the gage up function which set the upper mattress of Embodiment 1. FIG. Explanatory drawing of the state which actuated the gage up function from the state of FIG. The perspective view seen from the back surface side of the upper mattress used for the bed with the gage up function of Embodiment 2. FIG. (A) The upper mattress of Embodiment 2 is set on the lower mattress, and the explanatory view of the state where the cared person is sleeping there, (b) activates the gage up function from the state of (a). Explanatory drawing of the state which raised the care receiver's upper body. The perspective view seen from the back surface side of the upper mattress used for the bed with the gage up function of Embodiment 3. FIG. (A) sets the upper mattress of Embodiment 3 on the lower mattress, and the explanatory diagram of the state where the cared person is sleeping there, (b) activates the gage up function from the state of (a) Explanatory drawing of the state which raised the care receiver's upper body. (A) And (b) is explanatory drawing explaining the conventional subject.

(Embodiment 1)
Hereinafter, a bed with a gage-up function and a sub mattress body laid on the bed according to Embodiment 1 of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the upper mattress 1 as a sub mattress body has a flat rectangular parallelepiped outer shape. In the first embodiment, the length (longitudinal direction) is 1910 mm, the width is 830 mm, and the height (thickness) is 50 mm. The upper mattress 1 includes a mattress 2, a bag body 3, and three flaps 4 and 5. The mattress 2 is an elastic body made of urethane foam having a rectangular parallelepiped shape that is substantially the same as the outer shape of the upper mattress 1 (that is, a state in which the bag 3 is not provided). The bag body 3 is a flexible plastic material cloth body formed by sewing parts three-dimensionally. The bag body 3 is made of nylon having a bottom surface 3a having good slipperiness, and made of polyester having urethane processing on which the other five surfaces are relatively less slippery than the bottom surface 3a. The mattress 2 is housed in the bag body 3 so that it can be inserted into and removed from a fastener 6 formed along the protruding corner on the bottom surface 3a side of the lower body side end of the bag body 3.
Of the three flaps 4, 5, two (that is, a pair of) identically shaped flaps 4 are connected by sewing along the protruding corners on the bottom surface 3 a side at the left and right ends in the width direction. In the first embodiment, both the flaps 4 have a length of 550 mm and a width of 360 mm, and are disposed between the head side end portion of 955 mm and the foot side end portion of 595 mm in the longitudinal direction of the upper mattress 1. That is, the upper mattress 1 is disposed in the lower body direction from the longitudinal center position. Of the three flaps 4, 5, one flap 5 is connected by sewing along the protruding corner on the bottom surface 3 a side of the foot side end. In the first embodiment, the flap 5 has a length of 550 mm and a width of 600 mm, and is arranged at a central position that is uniform in the left-right direction. A rubber surface 7 as a frictional force imparting surface made of synthetic rubber having a fine rough surface is attached to the entire back surface of the three flaps 4 and 5. The rubber surface 7 has a very large coefficient of friction, so that the bottom surface 3a is in contact with the lower mattress 15 as will be described later. The slipperiness is much better than 5.

Next, a bed with a gage-up function (hereinafter referred to as a gudge-up bed) 10 on which the upper mattress 1 configured as described above is laid will be described.
As shown in the schematic diagrams of FIGS. 3 and 4, the gudge-up bed 10 is supported by a bed frame 11. The bed frame 11 includes a gantry 11a and front and rear boards 11b supported by the gantry 11a. A floor frame 12 is disposed on the gantry 11a. The floor frame 12 has a configuration in which divided frames 12a divided into a plurality (four in the first embodiment) are connected by a connecting plate 12b. A drive mechanism 13 is disposed on the gantry 11a so as to intersect the floor frame 12. In the first embodiment, the drive mechanism 13 is shown as a black box. In practice, the drive mechanism 13 is formed with a split frame 12a of the floor frame 12 by a drive transmission mechanism by a link mechanism driven by, for example, an electric hydraulic cylinder device.
A lower mattress 15 as a main mattress body is placed on the floor frame 12. The upper mattress 1 has a flat rectangular parallelepiped outer shape. In the first embodiment, the length (longitudinal direction) is 1910 mm, the width is 830 mm, and the height (thickness) is 150 mm. That is, the upper mattress 1 and the planar shape match. The lower mattress 15 includes a mattress (not shown) and a bag body 16. A mattress (not shown) is an elastic body made of urethane foam having a rectangular parallelepiped shape. The bag body 16 is a flexible plastic material cloth body formed by sewing parts three-dimensionally.

The upper mattress 1 is disposed on the lower mattress 15 of the gage-up bed 10. As shown in FIG. 2, the bottom mat 3 of the upper mattress 1 is disposed so as to contact the top surface of the lower mattress 15. Then, the flaps 4 and 5 are wound around the lower surface of the lower mattress 15. Actually, the flaps 4 and 5 are inserted between the lower mattress 15 and the floor frame 12. The rubber surface 7 on the back surface of the flaps 4 and 5 comes into contact with the back surface of the lower mattress 15 from the back surface. At this time, a gap is formed between the left and right flaps 4 so that the tips are slightly separated from each other. At the same time, the flaps 4 and 5 are sandwiched between the lower mattress 15 and the floor frame 12.
In such a set state, it is assumed that the person being assisted is sleeping on the upper mattress 1 as shown in FIG. When the cared person needs to raise his / her upper body on the bed, the drive mechanism 13 is driven to divide the frame 12a closest to the head side of the floor frame 12 (corresponding to a pusher) as shown in FIG. And the upper body side of the lower mattress 15 is pushed up by the action. At this time, the lower mattress 15 is compressed by the bent base P and bent while creating a large wrinkle in the inner portion.
Next, the movement of the upper mattress 1 at this time will be described. The upper mattress 1 placed on the lower mattress 15 is provided with a flap 4 at a position adjacent to the bending base P on the lower body side of the bending base P. In particular, the upper mattress 1 The thigh is placed, and many parts of the cared person's weight are weighted. In addition, the flap 5 is arranged from the knee to the toe, not as much as the buttocks and thighs, and the cared person's weight is also applied to this position. For this reason, a large frictional force acts on the lower body side of the upper mattress 1 and the position of the lower mattress 15 is maintained. On the other hand, there is no such holding force on the upper side of the bent base P, that is, on the upper body side of the upper mattress 1, but the bottom surface 3a having a good slidability of the upper mattress 1 slides well with the lower mattress 15, The upper mattress 1 slides relatively upward with respect to the lower mattress 15 without creating large wrinkles, and does not press the abdomen of the person being assisted.

The gage-up bed 10 and the upper mattress 1 according to the first embodiment configured as described above have the following effects.
(1) When the upper body side of the lower mattress 15 is pushed up by the gage-up mechanism, the upper body side of the upper mattress 1 is relatively slid upward and the abdomen of the person being assisted is not compressed. Even if the gadging up mechanism is repeated, the lower body side of the upper mattress 1 is firmly held by the lower mattress 15, so that the upper mattress 1 is less likely to be displaced from side to side and upward with respect to the lower mattress 15.
(2) When the rubber surface 7 of the flaps 4 and 5 comes into contact with the lower mattress 15 from the side surface to the back surface, the flaps 4 and 5 themselves are in close contact with the lower mattress 15 and are not easily displaced. It becomes difficult to shift from the arrangement position.
(3) Since only the upper mattress 1 needs to be prepared, it can be used in a gage-up bed which has been handled by “careless” by a caregiver until now.

(Embodiment 2)
Next, a second embodiment will be described. Since the configuration of the gudge-up bed 10 can be considered in the same manner in the second embodiment, detailed description thereof is omitted. About the same structure as the above, detailed description is abbreviate | omitted by attaching | subjecting the same number. Here, the upper mattress 21 will be described in detail.
As shown in FIG. 5, the upper mattress 21 of the second embodiment faces the lower half side end of the bottom surface 3 a of the bag body 3 instead of the flaps 4 and 5, and the insertion bag 22 is sewn. The insertion bag 22 is a bag body in which an opening 22a is formed in the head direction (upward direction) which is three-dimensionally sewn in a rectangular parallelepiped shape. The insertion bag 22 has the same width and height in the left-right direction as the width and thickness of the lower mattress 15. The length in the longitudinal direction is ¼ that of the lower mattress 15. It can be considered that the insertion bag 22 connects the left and right flaps 4 of the first embodiment, and a bottom portion 23 as a connecting body is attached along the protruding corner on the back side of the lower end of the upper mattress 21. The insertion bag 22 is made of nylon with good slipperiness for ease of insertion.
As shown in FIG. 6A, such an upper mattress 21 is inserted near the lower portion (foot direction) of the lower mattress 15 with the insertion bag 22 side facing downward. At this time, although the insertion bag 22 has good slipperiness, the width and thickness are the same, so the insertion bag 22 is fitted to the lower mattress 15 in a slightly forced fit.
As shown in FIG. 6B, by driving a drive mechanism 13 (not shown), the lower mattress 15 is bent while forming a large wrinkle in the inner portion at the bent base P, as in the first embodiment. The lower mattress 15 that is forcedly fitted to the insertion bag 22 is brought into contact with the lower body side of the upper mattress 21 on which the weight of the cared person is applied. The insertion bag 22 is formed by the lower mattress 15 and the floor frame 12. The upper mattress 21 is held by being restrained from sliding relative to the lower mattress 15 in the left-right and downward directions due to the frictional force when sandwiched. Further, the upper mattress 21 does not shift upward due to the bottom 23 of the insertion bag 22.
On the other hand, there is no such holding force on the upper body side of the upper mattress 21, but the bottom surface 3a having good sliding property of the upper mattress 1 slides favorably with the lower mattress 15, and the upper mattress 21 makes a large wrinkle. Without sliding the upper mattress 15, the abdomen of the person being assisted is not compressed.

(Embodiment 3)
Next, Embodiment 3 will be described. Since the configuration of the gudge-up bed 10 can be considered in the same manner in the third embodiment, a detailed description is omitted. About the same structure as the above, detailed description is abbreviate | omitted by attaching | subjecting the same number. Here, the upper mattress 31 will be described in detail.
As shown in FIG. 7, the upper mattress 31 of the third embodiment is a synthetic rubber frictional force having a fine rough surface on the lower half side of the bottom surface 3a of the bag body 3 instead of the flaps 4 and 5 and the insertion bag 22. A rubber surface 32 as an application surface is attached.
Such an upper mattress 31 is placed on the lower mattress 15 so that the bottom surface 3a of the bag 3 is on the foot side as shown in FIG.
As shown in FIG. 7B, by driving a drive mechanism 13 (not shown), the lower mattress 15 can be bent while forming a large wrinkle in the inner portion at the bent base P as in the first and second embodiments. Become. The lower half of the upper mattress 21 on which the cared person's weight is applied is held with a large frictional force by the rubber surface 32 and is prevented from shifting in the vertical and horizontal directions, and the upper mattress 31 is held against the lower mattress 15. It will be.
On the other hand, on the upper body side of the upper mattress 31, there is no such holding force, but rather the slidable bottom surface 3 a of the upper mattress 1 slides well with the lower mattress 15, and the upper mattress 31 makes a large wrinkle. Without sliding the upper mattress 15, the abdomen of the person being assisted is not compressed.

It should be noted that the present invention can be modified and embodied as follows.
-The shape and material of the upper mattresses 1, 21, and 31 can be changed as appropriate. Moreover, although the upper mattresses 1, 21, and 31 all have the form in which the mattress 2 is surrounded by the bag body 3, the bag body 3 may not be provided. Of course, the bottom surface 3a may be made of other materials as long as the sliding property is good. As other materials, for example, plastic fabric or natural fabric may be used.
The configuration of the gudge up bed 10 is an example.
In Embodiment 1, the shapes, materials, and arrangement positions of the flaps 4 and 5 can be changed as appropriate. As other materials, for example, plastic fabric or natural fabric may be used.
In the first embodiment, the left and right flaps 4 may be long enough to overlap in use. In that case, connecting means such as a hook-and-loop fastener may be provided in the overlapping region. As a result, the flap 4 does not fall off and can be adjusted as appropriate even if the overlapping portion changes according to the thickness of the lower mattress 15.
The shape and material of the insertion bag 22 of the upper mattress 21 can be changed as appropriate. As other materials, for example, plastic fabric or natural fabric may be used. For example, only the bottom 23 may be made of a material other than cloth. A rubber surface as a frictional force imparting surface made of synthetic rubber having a fine rough surface may be formed on the inner surface of the insertion bag 22.
The area of the rubber surface 32 formed on the back surface of the upper mattress 31 does not have to be the entire lower body side as described above. In particular, only the vicinity adjacent to the bent base P from the buttocks to the thigh where a large load is applied may be used.
-In Embodiment 1, you may make it implement in the state without the flap 5. FIG. In the first embodiment, the bottom surface 3a on the lower body side of the upper mattress 1 may be provided with a rubber surface as in the third embodiment (not necessarily the entire surface).
In Embodiment 1, the rubber surfaces 7 may be formed on both front and back surfaces of the flaps 4 and 5, and conversely, the rubber surfaces 7 may not be formed on both surfaces.
-Besides, it is free to implement in a mode that does not depart from the gist of the present invention.

  1, 21 and 31 ... Upper mattress as a sub mattress body, 4, 5 ... Flap as friction means, 11 ... Bed frame, 12 ... Floor frame, 12a ... Divided frame as pushing part, 13 ... Drive mechanism, 15 ... Lower mattress as main mattress body, 22 ... Insert bag as friction means, 32 ... Rubber surface as friction means.

Claims (11)

A bed frame, a floor frame mounted on the bed frame, a main mattress body for a bed placed on the floor frame, and an upper layer of the main mattress body are stacked on the main mattress body. A sub mattress body thinner than the main mattress body,
The floor frame includes a pressing portion having a portion that is displaced upward by being driven by a driving mechanism, and is configured such that the upper body side of the main mattress body is pushed and raised by the pressing portion. ,
The sub mattress body generates a larger friction than the upper body side due to the vertical pressure on the lower body side of the main mattress body than the raised portion, and the main mattress body is displaced between the main mattress body and the sub mattress body. A bed with a gage-up function, characterized in that friction means for preventing this is provided.   The friction means is a pair of belt-like bodies arranged on the lower body side of the main mattress body in the sub mattress body on the left and right side positions in the width direction, and the belt-like body is The bed with a gage-up function according to claim 1, wherein the bed is inserted between the main mattress body and the floor frame.   The bed with a gage-up function according to claim 2, wherein the belt-like body is disposed at a position adjacent to a bent base when the main mattress body is erected.   The bed with a gage-up function according to claim 2, wherein tips of the pair of band-like bodies are connected to form an annular body, and the main mattress body is surrounded by the annular body.   The annular body is disposed to face an end portion on the lower body side of the sub mattress body, and a lower end portion of the annular body and the end portion on the lower body side of the sub mattress body are connected by a connecting body. The bed with a gage-up function according to claim 4.   The gage up function according to any one of claims 2 to 5, wherein at least one surface of the front and back surfaces of the belt-like body is a friction force imparting surface having a friction coefficient larger than that of the back surface of the sub mattress body. bed.   The friction means is a second belt-like body disposed on the lower body side of the main mattress body in the sub mattress body and on the lower body side end of the sub mattress body, The bed with a gage-up function according to any one of claims 1 to 3, wherein the second belt-like body is inserted between the main mattress body and the floor frame.   The bed with a gage-up function according to claim 7, wherein at least one surface of the second belt-like body has a frictional force imparting surface having a friction coefficient larger than that of the back surface of the sub mattress body.   The friction means is a frictional force imparting surface formed on the lower body side of the main mattress body in the sub mattress body, which is on the lower body side, and formed on the back surface of the second mattress, and the frictional force imparting surface. The bed with a gage-up function according to claim 1, wherein a coefficient of friction is larger than that of the upper body side.   The bed with a gage-up function according to any one of claims 6, 8, and 9, wherein the frictional force imparting surface is made of a rubber material having a fine rough surface. A bed frame, a floor frame mounted on the bed frame, and a main mattress body disposed on the floor frame;
The floor frame has a portion that is driven by a driving means and at least the upper body side is erected, and the floor frame includes a pressing portion that has a portion that is displaced upward by being driven by a driving mechanism. The main disposed on the main mattress body in an upper layer of the main mattress body used in a bed with a gage-up function configured such that the upper body side of the main mattress body is pushed and raised by a moving portion. Sub mattress body that is thinner than the mattress body,
The sub mattress body generates a larger friction than the upper body side due to the vertical pressure on the lower body side of the main mattress body than the raised portion, and the main mattress body is displaced between the main mattress body and the sub mattress body. A sub mattress body characterized in that a friction means for preventing the friction is provided.

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