JP2017046970A - Floorboard for bed and bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a width-adjustable floorboard (a bottom) for a bed.SOLUTION: The floorboard for a bed having a rectangular shape as a whole in plane view, includes: one or more floorboard parts; rail members along the length direction of the floorboard so as to support the floorboard parts; and width end receiving members located outside at least one ends in the width direction of the floorboard in the floorboard parts. The width end receiving members are connected to the floorboard parts so as to adjust a distance towards the ends of the floorboard parts.SELECTED DRAWING: Figure 23

Description

  The present invention relates to a bed floor (bottom) for use by a cared person, a patient, and the like in a general household, a care facility, a nursing facility, and other medical institutions, and a bed using the floor plate.

Recently, the number of care recipients has increased, and the opportunity to use nursing beds (home nursing beds) has increased in ordinary households. In that case, in general, home care beds are often rented or leased from contractors.
There are various types of home-care beds of this type, but the floor plate (sometimes called the bottom) that receives the mattress is made up of a frame structure that forms a long rectangular frame in plan view as a whole. A bed that supports the frame structure and can move the frame structure up and down is generally used. Here, the frame structure extends linearly along at least the length direction of the bed (the direction connecting the head and legs of the user sleeping on the bed), and the long sides on both ends in the width direction of the bed are extended. Combining the two long side frame members constituting the two long side frame members extending in a straight line along the width direction of the bed and constituting the short sides on both ends in the length direction of the bed Generally, it is generally configured to have a long rectangular shape in plan view.

Conventional representative examples of this type of home care bed are shown in principle in FIGS.
33 to 35, the bed main body 10 basically includes a frame-shaped support portion 14 placed on an installation surface, for example, a floor surface 12 of a room, via a caster 13, and a support portion 14. The frame structure 16 that can be moved up and down, the lift support mechanism 18 that supports the frame structure 16 so as to be lifted up and down, for example, the lift link mechanism, and the lift link mechanism 18 are operated. Thus, the frame structure 16 is configured to have a lifting drive device (not shown) for lifting and lowering the frame structure 16. Both the support portion 14 and the frame structure 16 are formed to have a long rectangular shape as a whole in plan view. Therefore, the length direction of the support part 14 and the frame structure 16 corresponds to the length direction of the bed main body 10, that is, the direction connecting the user's head and legs when the user lies on the bed. . In FIGS. 33 and 34, the right side in the length direction of the bed body 10 (left and right direction in the figure) is the user's head side and the left side is the foot side. 10 or the same in the figure in which the length direction of the frame structure 16 appears.

Here, the frame structure 16 extends at least in the length direction of the bed main body 10 and forms two long sides on both ends (sides) in the width direction of the bed main body 10. The frame members 16A ₁ and 16A ₂ and two short sides extending in a straight line along the width direction of the bed main body 10 and on both ends (the bed user's head and feet) in the length direction of the bed main body 10 The two short-side frame members 16B ₁ and 16B ₂ that constitute the frame are combined to form a long rectangular shape in plan view. The long side frame members 16A ₁ and 16A ₂ and the short side frame members 16B ₁ and 16B ₂ are generally made of a hollow pipe material (for example, a square pipe) made of a highly rigid material such as steel. It is.

  Further, on one end side in the length direction of the frame structure 16, a headboard 22 is provided corresponding to the position on the user's head extension, and on the other end side in the length direction of the frame structure 16, Usually, a footboard 24 is provided corresponding to the position on the leg extension of the user. Further, the bed user is prevented from dropping from the bed at predetermined locations on both sides or one side in the width direction (short direction) of the frame structure 16, and at the same time, Usually, one or more fence members 26 are attached upright so that they can be grasped when leaving the floor.

  On the frame structure 16, a plate-like floor board (also referred to as a bottom) 20 for receiving a mattress (not shown) is placed. The floor board 20 is divided into a plurality of the floor board 20 in the length direction of the bed body 10 (for example, divided into 5 parts and rotated between the divided floor board portions 20A to 20E so that the floor board 20 can be bent. In this case, the frame structure 16 includes a plurality of divided floor plate portions 20A to 20E constituting the floor plate 20 except for the central floor plate portion 20C. A floor plate actuator unit (not shown) composed of an electric motor or the like for tilting and / or raising one or more of the divided pieces is usually mounted, of the divided floor plate portions 20A to 20E. Inclining and / or raising one or more floorboards means lifting the part corresponding to the upper body of the user (so-called back-up operation) or having a part corresponding to the leg of the user. Means the gel operation (so-called leg-up operation).

  By the way, in this kind of home care bed, from the viewpoint of the user's height and physique, restrictions on the installation location, etc., a plurality of kinds of floor boards 20 having different lengths and widths are provided. In many cases, the system is prepared on the side of a trader (for example, a bed rental trader) and the user selects and designates the length and width of the floorboard 20 that is actually provided to the home by rental or the like.

  In this way, the home care bed provider must prepare a plurality of types of floorboards having different lengths and widths at any time in order to meet the needs of the user. Therefore, the actual situation is that manufacturing costs, storage costs, management costs, and the like are inevitably higher than when only a single size floor board is provided.

  By the way, a floor board for a bed whose length can be adjusted has already been proposed in Patent Document 1, for example. In such a floor board of patent document 1, since the length can be adjusted with a single floor board, it is possible to avoid the problem that floor boards having different lengths must be prepared by a bed provider. is there.

  However, the floorboard of Patent Document 1 can be adjusted only in its length, and cannot be adjusted in width. Therefore, even with the floorboard of Patent Document 1, the bed provider side must prepare a plurality of types of floorboards with different widths as usual, and therefore there is a limit to cost reduction due to common size. is there.

  Furthermore, it may be desired to use mattresses having different widths after borrowing or purchasing a bed main body on the bed user side or after being installed at a place of use. The conventional floorboards cannot be used, and there is an inconvenience that the bed body must be replaced with a floorboard having a different width according to the width of the mattress. In this case, the economic burden on the bed user is increased. There is also a problem of end.

Japanese Patent No. 5235765

  The present invention has been made against the background of the above circumstances, and it is possible to adjust the width with a single floor board, thereby facilitating cost reduction and reducing the burden on the bed provider. In addition, even after the bed user borrows or purchases the bed body or installs it in the use place, it is excellent in convenience that it is possible to use mattresses of different widths on the same floorboard, It is an object of the present invention to provide a bed floor board that can reduce the economic burden on the bed user, and to provide a bed using such a bed floor board.

Specifically, the floorboard for a bed according to the basic aspect (first aspect) of the present invention is:
It is a floor for a bed that is rectangular in plan view as a whole,
One or two or more floor plate portions, a rail member extending along the length direction of the floor plate so as to support the floor plate portion, and a width end receiving member positioned outside at least one end of the floor plate portion in the width direction of the floor plate And
The width end receiving member is connected to the floor plate portion so that a distance between the width end receiving member and the end portion of the floor plate portion can be adjusted.

  In the bed floor board of the above aspect, the overall width of the floor board can be adjusted by adjusting the distance between the width end receiving member and the end of the floor board portion.

Moreover, the floorboard for a bed according to the second aspect of the present invention is
In the floor board for bed of the 1st mode,
Among each floor plate portion, one or more floor plate portions are composed of a plurality of cross members extending in the width direction of the floor plate and arranged in parallel at intervals in the length direction of the floor plate, and the width end receiving member is Provided on the outside of the end portions of the plurality of crosspiece members along the direction in which the plurality of crosspiece members are arranged, and the distance between the width end receiving member and the end portion of the crosspiece member is adjustable It is connected with the edge part of each said crosspiece member so that it may become.

Furthermore, the floorboard for a bed according to the third aspect of the present invention is:
In the bed floor board of the first or second aspect,
The width end receiving member has a base portion located outside the end portion in the floor plate width direction of the floor plate portion, and a width end connecting shaft extends from the base portion toward the floor plate portion, and the width end connection A portion on the extending end side of the shaft is inserted into the floor plate portion so as to be relatively slidable.

  In the bed floor board of such an aspect, the movement of the width end receiving member (linear movement for width adjustment) is guided by the width end connecting shaft sliding in the floor board portion during width adjustment.

Furthermore, the floor for a bed according to the fourth aspect of the present invention is:
In the floor board for bed of the 3rd mode,
A sliding member that is slidable in the width direction of the floor plate within the floor plate portion is provided in a portion on the extending end side of the width end connecting shaft of the width end receiving member, and the floor plate portion includes the floor plate. A positioning portion for positioning two or more holding positions adjusted in the width direction is formed, and each adjusted holding position can be held by the positioning portion.

  In the bed floor board of such an aspect, the position of the width end receiving member corresponding to the width to be adjusted can be easily positioned and held.

Furthermore, the floorboard for a bed according to the fifth aspect of the present invention is:
In the floor for a bed according to any of the third and fourth aspects,
A pair of upper and lower tongue pieces extend from the base portion of the width end receiving member toward the floor plate portion, and the portions on the extended end side of these tongue piece portions sandwich the end portion of the floor plate portion. It is characterized by having been comprised by this.

  Here, the width end receiving member receives the edge in the width direction of the mattress placed on the floor plate when the bed is used. In the bed floor plate of the above aspect, the width end receiving member extends from the base portion of the width end receiving member. A pair of upper and lower tongue pieces sandwiching the floor plate portion can ensure sufficient rigidity against the load applied to the edge in the width direction of the mattress.

Furthermore, the floorboard for a bed according to the sixth aspect of the present invention is:
In the floor board for bed according to any one of the first to fifth aspects,
The width end receiving members are respectively provided outside both ends of the floor plate in the width direction of the floor plate portion, and the distance between each width end receiving member and each end portion of the floor plate portion is adjusted. It is connected to the floor plate part so as to be possible.

  In the bed floor board of such an aspect, the position adjustment of the width end receiving member can be performed on both sides in the width direction of the floor board, so that the range of the overall width adjustment of the floor board can be increased.

Further, the bed floor board according to the seventh aspect of the present invention is:
In the floor board for bed according to any one of the first to sixth aspects,
The plurality of floor boards are provided side by side in the length direction of the floor boards, and the floor boards are connected to each other so as to be rotatable about a horizontal axis. .

The bed of the eighth aspect of the present invention is
A bed floor plate according to any one of the first to seventh aspects, a frame structure that supports the bed floor plate from the lower surface side, and has a long rectangular shape in plan view as a whole, and the frame structure as a bed installation surface It has the raising / lowering mechanism which raises / lowers with respect to, It is characterized by the above-mentioned.

  The width of the bed floor board of the present invention can be adjusted. Therefore, the bed provider side does not have to prepare a plurality of types of floor boards with different widths, thereby reducing the cost and burdening the bed provider. On the other hand, on the bed user side, it is possible to use mattresses with different widths on the same floorboard even after borrowing or purchasing the bed body or installing it in the use place. An effect such as excellent convenience can be achieved.

It is a perspective view which shows roughly an example of the bed main body comprised using the floor board for beds of one Embodiment of this invention in the state which the frame structure fell. FIG. 2 is a perspective view schematically showing an example of the bed main body shown in FIG. 1 in a state where the frame structure is raised. It is a perspective view which shows an example of the frame structure for beds used in combination with the floor board for beds of one Embodiment of this invention. It is a top view which shows the frame structure for beds shown by FIG. 3 by planar view. It is a disassembled perspective view which shows the frame structure for beds shown in FIG. 3 in the state decomposed | disassembled into each frame division body. It is a top view which expands and shows the VI part of the circle enclosure in FIG. It is a longitudinal cross-sectional view in the VII-VII line in FIG. It is a longitudinal cross-sectional view in the VIII-VIII line in FIG. It is a longitudinal cross-sectional view in the IX-IX line in FIG. It is a longitudinal cross-sectional view in the XX line in FIG. It is a longitudinal cross-sectional view in the XI-XI line in FIG. It is a top view which shows an example of the long side frame pipe used for the frame structure for beds shown by FIG. It is a front view of the long side frame pipe shown by FIG. FIG. 13 is a bottom view of the long side frame pipe shown in FIG. 12. It is a longitudinal cross-sectional view in the XV-XV line | wire in FIG. It is a longitudinal cross-sectional view in the XVI-XVI line in FIG. It is a perspective view from the upper surface side which shows the condition at the time of the assembly about the long side frame pipe shown by FIGS. It is a perspective view from the bottom face side which shows the condition at the time of the assembly about the long side frame pipe shown by FIGS. It is a perspective view from the upper surface side which shows the condition at the time of joint cancellation | release and expansion | extension about the long side frame pipe shown by FIGS. It is a perspective view from the bottom face side which shows the condition at the time of the coupling | bonding cancellation | release and expansion | extension about the long side frame pipe shown by FIGS. It is a perspective view from the upper surface side which shows the condition at the time of folding about the long side frame pipe shown by FIGS. It is a perspective view from the bottom face side which shows the condition at the time of folding about the long side frame pipe shown by FIGS. It is a top view which shows an example of the floor board (bottom) for beds of this invention. It is a front view of the floor board (bottom) shown by FIG. It is a side view of the floor board (bottom) shown by FIG. It is a perspective view from the bottom face side about the floor board (bottom) shown by FIG. FIG. 27 is a partially cutaway perspective view showing an enlarged XXVII portion in FIG. 26. It is sectional drawing in the XXVIII-XXVIII line | wire in FIG. It is sectional drawing in the XXIX-XXIX line | wire in FIG. It is sectional drawing in the AA in FIG. It is sectional drawing in the BB line in FIG. It is sectional drawing in the CC line in FIG. It is a schematic front view which shows an example of the conventional bed for home care. It is a schematic plan view of an example of the conventional home care bed shown in FIG. It is a schematic left view of an example of the conventional home care bed shown in FIG.

  Hereinafter, an example of a bed floor board according to an embodiment of the present invention, a bed frame structure used in combination with the bed floor board, and a bed using them will be described in detail with reference to the drawings. Note that the embodiments described below are merely examples, and the present invention is of course not limited to these embodiments.

<Overview of overall structure of bed>
FIG. 1 and FIG. 2 are views showing in principle a bed main body portion (bed main body) 10 constituted by using a bed floor board according to an embodiment of the present invention and a bed frame structure suitable for the floor board. FIG. 1 shows a state where the frame structure 16 is lowered, and FIG. 2 shows a state where the frame structure 16 is raised. In FIGS. 1 and 2, the head board 22, the foot board 24, and the fence member 26 shown in FIGS. 33 to 35 are shown in a removed state in order to avoid complexity.

  The bed body 10 generally has a frame structure 16 having a long rectangular shape in plan view as a whole, and a base part for supporting the frame structure 16 on an installation surface (generally a floor surface) so as to be movable up and down. The four leg portions 15A to 15D, and an elevating mechanism for elevating the frame structure 16 while sliding the frame structure 16 with respect to the leg portions 15A, 15B, 15C, and 15D. This lifting mechanism will be described later.

  Further, the bed main body 10 is provided upright at one end in the length direction of the frame structure 16 so as to be detachable from a headboard (not shown) similar to the headboard 22 of FIGS. A footboard (not shown) similar to the footboard 24 of FIGS. 33 to 35 is provided on the other end side in the length direction of the body 16 so as to be detachable. Further, on both sides along the length direction of the frame structure 16, upright so that a fence member (not shown) similar to the bed fence member 26 of FIGS. 33 to 35 can be attached and detached at positions near the four corners. Can be attached to.

  A floor plate 20 is placed on the frame structure 16. The floor plate 20 is divided into a plurality of lengths of the bed main body 10 so that it can be bent, and the floor plate divided pieces are rotatably connected to each other, and the foot side portion is inclined. It has a so-called foot-lifting function for lifting the head and a so-called back-raising function for lifting the head side portion in an inclined manner. The details of the structure of the floor plate 20 and the drive mechanism for raising the legs and raising the back will be described later.

<Frame structure>
The frame structure 16 can be adjusted in length in stages in the longitudinal direction (direction connecting the head side and the foot side), and may be adjusted in any two or more stages. In this embodiment, the length can be adjusted in two stages. In the following, of the two stages of length states, a longer state is referred to as an “extended state”, and a shorter state is referred to as a “shortened state”.
3 and 4 show the overall structure of the frame structure 16 in an expanded state, and FIG. 5 shows a state in which the frame structure 16 is disassembled at a place where it can be easily attached and detached.

  As shown in FIGS. 3 to 5, the frame structure 16 extends in a straight line along the length direction thereof, and two parallel structures constituting the long side portions on both sides in the width direction of the frame structure 16. The long-side frame divided bodies 16A and 16B made up of the long-side frame pipe 19 and linearly extend along the width direction of the frame structure 16, and the short-side portions on both sides in the length direction of the frame structure 16 The short side frame divided bodies 16C and 16D having the two parallel short side frame pipes 21 are configured. The length of the frame structure 16 is not only adjustable in two stages as described above, but also as shown in FIG. 5, the long side frame divisions 16A and 16B and the short side frame division 16C. , 16D can be easily attached and detached, in other words, can be stored and transported in a state of being divided into the respective divided bodies 16A, 16B; 16C, 16D, and can be easily assembled. That is, on the side of a provider such as a bed provider (for example, a bed rental provider), the frame structure 16 is stored in a state of being divided into four parts 16A and 16B; The frame structure 16 can be transported in the four-divided state as described above when transporting to a bed use location such as a home, and these four divided bodies 16A, 16B; 16C, 16D is couple | bonded and it is set as the structure which can assemble the frame structure 16 easily.

  A long-side frame pipe 19 constituting the long-side frame divided bodies 16A and 16B is composed of two long-side pipe members 19A and 19B made of an aluminum alloy extruded material and made of a hollow section rectangular pipe material in series. It is formed by combining. Here, the two long-side pipe members 19A and 19B constituting the long-side frame pipe 19 are foldable at their serially connected portions, but the folding structure will be described in detail later. .

Each of the short-side frame divided bodies 16C and 16D has a short-side frame pipe 21 along a horizontal direction made of a rectangular pipe material having a hollow cross-sectional rectangular shape that is an extruded material of an aluminum alloy. The side frame pipes 21 constitute short side portions on both sides along the width direction of the long rectangular frame structure 16. Furthermore, each short side frame division body 16C, 16D is extended in the horizontal direction from the column 17A-17D along the vertical direction fixed to both ends of each short side frame pipe 21, and the side of each column 17A-17D. Short fitting pipes 21A and 21B.
The support columns 17A to 17D are vertically aligned at the four corners of the long rectangle of the frame structure 16, and are hollow portions that respectively accommodate leg portions 15A to 15D, which will be described later, so as to be relatively slidable in the vertical direction. It is made by a hollow pipe such as an aluminum alloy extruded material. And the edge part of the short side frame pipe 21 is fixed to the lower part of perpendicular | vertical support | pillars 17A-17D by welding etc. Furthermore, the base end part of horizontal fitting pipe 21A, 21B is welded to the lower part of the support | pillars 17A-17D. It is fixed by etc. Therefore, the short side frame pipe 21 and the fitting pipes 21A and 21B are located in substantially the same horizontal plane.

As described above, each of the fitting pipes 21A and 21B is fixed to the vertical side surface near the lower ends of the support columns 17A to 17D and extends horizontally from the lower side surfaces of the support columns 17A to 17D. The front end (the end on the side not connected in series) of the long side pipe member 19A (or 19B) constituting the long side frame pipe 19 can be inserted into and removed from the front end side opening of the combination pipes 21A and 21B. And the insertion length is adjustable (inserted). And the insertion part is fixed to fitting pipe 21A, 21B so that attachment or detachment is possible, long side frame division body 16A, 16B and short side frame division body 16C, 16D are couple | bonded, and a long rectangular shape is formed as a whole. A frame structure 16 is assembled.
The above-described fixing structure (fitting fixing portion structure) that can be attached to and detached from the fitting pipes 21A and 21B and the long side pipe member 19A (or 19B) will be described in detail later with reference to FIGS. Explained.

<Elevating mechanism>
The raising / lowering mechanism for raising / lowering the frame structure 16 with respect to the bed installation surface (floor surface) is not particularly limited. In short, if the frame structure 16 can be raised and lowered while maintaining a horizontal state. Good. For example, in the case of the present embodiment, the pillars 17A to 17D at the four corners of the frame structure 16 may be slid in the vertical direction with respect to the leg portions 15A to 15D by an electric actuator for lifting. In some cases, instead of providing the leg portions 15A to 15D as described above, a frame-shaped support portion (reference numeral 14 in FIGS. 33 to 35) as shown in FIGS. The frame structure 16 may be provided below the support 16 and moved up and down with respect to the support portion by a link mechanism.

<Fitting fixing structure>
6 to 11 show the main part of the frame structure 16, particularly the long side frame pipe 19 in the long side frame divided body 16A, in a state where the frame structure 16 is extended and fixed in the length direction. The structure of the fitting and fixing portion between the end (the tip of the long side pipe member 19A) and the fitting pipe 21A will be described in detail. This fitting portion basically has one of two wall surfaces forming a right angle among the four wall surfaces constituting the outer surface wall of the inner corner pipe, and the outer corners are operated by operation from the outer surface side of the outer corner pipe. A first pressure operating portion for press-contacting with the inner surface of the pipe, and a second for pressing the other of the two right-angled wall surfaces against the inner surface of the outer square pipe by operating from the outer surface side of the outer square pipe. And a pressure contact operating portion. Further, in the present embodiment, the fitting portion is provided with a positioning portion for positioning the fitting position at two or more positions along the fitting length direction of the fitting portion. Each position can be held by the positioning portion. These will be described in more detail.

  A bolt 40 with a knob as a first press-contact operating portion is screwed into an inner wall (vertical wall corresponding to the inside of the frame structure 16) 19Aa at the end of the long side pipe member 19A. A positioning fixing through hole 43B is formed through which a fixing screwing hole 43A and an advance / retreat pin 44B of a positioning member 44 described later are inserted (see FIG. 8). The lower side wall 19Ac of the end of the long side pipe member 19A is formed with screw holes 42A and 42B into which the lower surface side fixing screws 41A and 41B as the second pressure contact operation portion are screwed (see FIG. 9).

  Further, a positioning member 44 is mounted in the end portion of the long side pipe member 19A from the tip opening side. The positioning member 44 includes, for example, a block-shaped base portion 44A made of resin, an advance / retreat pin 44B that protrudes forward / backward from the base portion 44A, and a spring that elastically biases the advance / retreat pin 44B in the advance direction. The urging member 44C is configured (see FIG. 8).

The base 44A basically has an outer contour shape and outer dimensions of a vertical cross section perpendicular to the length direction of the long side pipe member 19A, and the inner shape and inner dimensions of the long side pipe member 19A are substantially the same. It is made of resin or the like so as to have substantially the same dimensions, and is inserted into the inside from the opening end of the long side pipe member 19A, for example, the outer wall 19Ab (frame structure of the long side pipe member 19A) A plurality of (two in the illustrated example) screws 46A and 46B inserted from a vertical wall corresponding to the outer surface of the body 16 are fixed to the inside of the long side pipe member 19A (see FIG. 9). ). Note The base portion 44A is insertable become as slits 44Aa easily push the long side pipe member 19A is formed, and is also appropriate one or more thinned portions 44A _b is formed. More base portion 44A, recessed portion 44A _c for accommodating the biasing member 44C and retractable pins 44B of such a spring is formed. The retractable pins 44B protruding from the recess 44A _c is inserted through the positioning through hole 43B of the long-side pipe member 19A, which corresponds to the inner surface of the inner wall (frame structure 16 on the long side pipe member 19A It is assembled so that it can protrude in an elastically biased state from a vertical wall) 19Aa.

On the other hand, in the inner wall 21Aa of the fitting pipe 21A, a plurality of (two in the illustrated example) fitting fixing screw insertions corresponding to the fitting fixing screw fastening holes 43A of the long side pipe member 19A described above are inserted. Holes 48A and 48B are formed at a predetermined interval S in the length direction of the fitting pipe 21A (see FIG. 7). The interval S is set to be ½ of the difference between the length of the frame structure 16 in the extended state of the frame structure 16 and the length in the shortened state. Here, the fitting fixing screw insertion hole 48A located on the distal end side of the fitting pipe 21A is a screw insertion hole for an extended state, and the fitting fixing screw insertion hole 48 located on the proximal end side of the fitting pipe 21A. Corresponds to a screw insertion hole for a shortened state.
Further, a plurality of (for fitting and fixing) are provided at positions below the fitting fixing screw insertion holes 48A and 48B on the inner wall 21Aa of the same fitting pipe 21A corresponding to the positioning pin through holes 43B of the long side pipe member 19A. The same number of positioning holes 50A and 50B as the screw insertion holes 48A and 48B are formed. The intervals between the positioning holes 50A and 50B are the same as the interval S between the fitting fixing screw insertion holes 48A and 48B. Therefore, the positioning hole 50A located on the distal end side of the fitting pipe 21A corresponds to the extended positioning hole, and the positioning hole 50B located on the proximal end side of the fitting pipe 21A corresponds to the shortened positioning hole.

Furthermore, the lower side wall 21Ac of the fitting pipe 21A has two sets of screw mounting holes into which two lower surface side fixing screws 41A and 41B as second press contact operating portions are mounted. Screw mounting holes 51A ₁ , 51B ₁ ; 51A ₂ , 51B ₂ are formed (see FIG. 9). These two sets of screw mounting holes 51A ₁ , 51B ₁ ; 51A ₂ , 51B ₂ correspond to the screw holes 42A, 42B formed in the lower side wall 19Ac of the long side pipe member 19A described above, One set of screw mounting holes 51A ₁ and 51B ₁ positioned on the distal end side of the fitting pipe 21A is a screw mounting hole for an extended state, and the other set of screws positioned on the proximal end side of the fitting pipe 21A. The mounting holes 51A ₂ and 51B ₂ are screw mounting holes for a shortened state. Then each of the mounting holes _{51A 1,} 51B _1; A 51A 2, 51B _2, through the prevention washer 52 spots, respectively, lower side fixing screws 41A, 41B is adapted to be mounted.

  Here, in the above embodiment, the positioning member 44, the advance / retreat pin 44B, the urging member 44C, and the positioning through holes 44A and 44B constitute the aforementioned positioning portion.

  6 to 11, among the four corners of the fitting and fixing portion of the frame structure 16, one corner of the fitting and fixing portion, that is, one end of the long side frame pipe 19 in the long side frame portion 16 </ b> A ( Only the structure of the fitting and fixing portion between the long side pipe member 19A) and the fitting pipe 21A is shown, but the fitting and fixing portions at the other three corners (three locations) are the same as described above. It is configured.

Next, the operation and function of the fitting and fixing structure as described above will be described.
As shown in FIG. 5, the frame structure 16 is divided into four long bodies, ie, the long side frame divided bodies 16A and 16B and the short side frame divided bodies 16C and 16D. When assembling the structure 16, the long side frame pipes 16A and 16B have the long side frame pipe 19 at the tip end (the long side pipe members 19A and 19B) at the short side frame divided body 16C, The fitting pipes 21A and 21B in 16D are fitted and fixed to the tips.

The state of fitting and fixing when assembling the frame structure 16 in the extended state is the fitting and fixing part at one corner among the fitting and fixing parts at the four corners in the frame structure 16, that is, the long side of the long side frame portion 16A. The fitting and fixing of one end of the frame pipe 19 (the tip of the long side pipe member 19A) and the fitting pipe 21A will be described with reference to FIGS.
In the initial state (disassembled state), the knob-attached bolt 40 is removed, and the lower surface side fixing screws 41A and 41B are loosened.

  In fitting and fixing, the advance / retreat pin 44B is pushed by a finger or the like against the urging member 44C so as not to protrude from the inner wall 19Aa of the long side pipe member 19A, and in this state, the tip of the long side pipe member 19A Is inserted into the open end of the fitting pipe 21A. Then, the long side pipe member 19A is pushed into the fitting pipe 21A, and the position of the advancing / retreating pin 44B of the long side pipe member 19A is (extension of the two positioning holes 50A, 50B in the fitting pipe 21A). When reaching the positioning hole 50A (for state), the forward / backward pin 44B protrudes into the positioning hole 50A by the biasing force of the biasing member 44C, thereby positioning the long side pipe member 19A with respect to the fitting pipe 21A. The This state corresponds to positioning when the frame structure 16 is assembled in the extended state.

At that position, the lower surface side fixing screws 41A and 41B as the second pressure contact operating portion are screwed into the screw holes 42A and 42B of the long side pipe member 19A. As a result, the long side pipe member 19A is drawn downward in the fitting pipe 21A. When the lower surface side fixing screws 41A and 41B are tightened, the lower side wall 19Ac of the long side pipe member 19A becomes the fitting pipe. It will be in the state press-contacted to 21 A lower wall 21Ac.
Further, the knob-attached bolt 40 as the first pressure contact operating portion is inserted into the fitting fixing screw insertion hole 48A of the fitting pipe 21A and screwed into the fitting fixing screw fixing hole 43A of the long side pipe member 19A. Then, if further tightened, the long side pipe member 19A is drawn toward the inner wall 21Aa of the fitting pipe 21A in the fitting pipe 21A and is pressed against the inner wall 19Aa of the long side pipe member 19A. It becomes a state.

  In this way, the long side pipe member 19A has two surfaces, a lower surface (lower side wall 19Ac) and an inner side surface (inner side wall 19Aa), the first pressure contact operating portion (bolt 40 with knob) and the second pressure contact. The operation portion (lower surface side fixing screws 41A and 41B) is brought into a state of being pressed (contacted) to the two inner surfaces of the fitting pipe 21A in the fitting pipe 21A by an external operation. That is, the long side pipe member 19A and the fitting pipe 21A are in close contact with the fitting pipe 21A in two orthogonal directions in a cross section perpendicular to the length direction of the long side pipe member 19A. It is possible to reliably prevent the play from occurring between the two.

  If the above-described fitting and fixing operation is performed on the fitting and fixing portions at the remaining three corners of the four corners and fixing portions in the frame structure 16, the short side frame divided bodies 16A and 16B and the short side The side frame division bodies 16C and 16D can be assembled into a long rectangular shape as a whole (in this case, in an expanded state) to form a long rectangular frame structure 16. In addition, in this case, at all fitting and fixing points, both ends of the long side frame pipe 19 in each of the long side frame divided bodies 16A and 16B (each one end of the two long side pipe members 19A and 19B) As described above, the fitting pipes 21A and 21B in the short side frame divided bodies 16C and 16D are pressed and adhered in two orthogonal directions in a cross section orthogonal to the length direction as described above, and all fittings are fixed. A generally robust frame structure 16 can be obtained, with the points firmly joined together. Therefore, it is possible to prevent the occurrence of abnormal noise or vibration due to backlash or stagnation at the fitting and fixing portion when the bed is used, or the frame structure is distorted.

  In the above description, the fitting and fixing state when the frame structure 16 is assembled so as to be in the extended state has been described. However, when the frame structure 16 is assembled in the shortened state, or when the frame structure 16 is changed from the extended state to the shortened state. Is positioned in the shortened state by fitting the advance / retreat pin 44B into the positioning hole 50B on the proximal end side of the fitting pipe 21A, and the long side pipe member 19A is placed on the lower surface (lower side) in the same manner as described above. The two surfaces of the side wall 19Ac) and the inner side surface (inner side wall 19Aa) may be brought into pressure contact with the two inner surfaces of the fitting pipe 21A in the fitting pipe 21A. Therefore, even in the shortened state, similarly to the extended state, it is possible to provide a robust frame structure 16 that prevents the occurrence of backlash, stagnation, and distortion.

<Foldable structure of long side frame pipe>
The long side frame pipes 19 constituting the long side frame divided bodies 16A and 16B may be formed of a single continuous long pipe material, but in this embodiment, the long side frame pipe 19 Each has a structure in which a plurality of, for example, two long side pipe members 19A and 19B are connected in series, and the connecting portion between the adjacent long side pipe members 19A and 19B has a foldable structure. Applicable. As described above, the structure in which the two or more long-side pipe members 19A and 19B can be folded at the serially connected portion of the two or more long-side pipe members 19A and 19B completely separates the two or more long-side pipe members 19A and 19B. This means that it can be easily stored and transported in a folded state, not in a free state. And, it means that the folded state can be canceled during the assembly of the bed to obtain a serial fixed coupling state.
Next, the foldable structure of the long side frame pipe 19 will be described in detail with reference to FIGS.

  The long side frame pipe 19 is joined and integrated in a state in which one ends of the two long side pipe members 19A and 19B are abutted when the frame structure 16 is assembled or after the frame structure 16 is assembled. However, when the frame structure 16 is disassembled, that is, at the time of storage or transportation, the joining and fixing state of the butted portion is released, and the ends of the two long side pipe members 19A and 19B are slightly separated from each other. And can be folded.

  Specifically, as shown in FIGS. 12, 13, and 15, the pipe members 19 </ b> A and 19 </ b> B of the long-side pipe members 19 </ b> A and 19 </ b> B have one long-side pipe member 19 </ b> B. A connecting member 61 having a substantially rectangular pipe shape or a substantially rectangular bar shape is inserted from the end portion into the end portion of the other long side pipe member 19A. A portion 61A on one side of the connecting member 61 in the length direction (a portion inserted into the long side pipe member 19B) is fixed to the long side pipe member 19B with a screw 62 or the like. The portion 61B extends from the tip of the long side pipe member 19B by a predetermined length, and the extended portion 61B is inserted into the long side pipe member 19A. The long side pipe member 19A is slidable in the length direction with respect to the connecting member 61, and can be attached to and detached from the connecting member 61 by a bolt 63 with a knob at a position where the long side pipe members 19A and 19B are abutted. It is set as the structure which can be fixed to.

  Further, a separation preventing engagement member 64 is disposed on the lower surface side of the butted portion of the long side pipe members 19A and 19B. The engagement member 64 for preventing detachment has a substantially long plate shape, and these pipes extend from the lower surface of one long side pipe member 19B to the lower surface of the other long side pipe member 19A. It is arrange | positioned on the lower surface of pipe member 19A, 19B along the length direction of member 19A, 19B. A portion near one end of the detachment preventing engagement member 64 is rotatably connected to the lower surface of one long side pipe member 19B by a first support pin 65A. In addition, a long hole 66 is formed along the length direction of the other end portion of the engagement member 64 for preventing separation, and the long hole 66 extends from the lower surface of the other long side pipe member 19A. A second support pin 65B protruding downward is inserted so as to be relatively rotatable and not removable. As shown in FIGS. 15 and 16, a coil spring 66A is attached to the first support pin 65A, and the separation preventing engagement member 64 is attached to the long side pipe member 19B by the coil spring 66A. It is designed to be pressed against the bottom surface. A coil spring 66B is also attached to the second support pin 65B, and the separation preventing engagement member 64 is pressed against the lower surface of the long side pipe member 19A by the coil spring 66B.

  In the structure (folding structure) of the embodiment as described above, the portion 61A on one end side of the connecting member 61 (see FIG. 15) is always fixed to the long side pipe member 19B by the screw 62. When assembling the frame structure 16, the long side pipe members 19 </ b> A and 19 </ b> B are butted together so that the long side pipe members 19 </ b> A and 19 </ b> B are in series, and are inserted into the long side pipe member 19 </ b> A Part) Fastening the bolt 63 with a knob to 61B causes the long side pipe member 19A to be fixedly held by the connecting member 61, and as a result, the long side pipe members 19A and 19B are fixedly coupled to each other. In addition, the engagement member 64 for preventing separation is in a state where the long side pipe members 19A and 19B are connected to each other along the lower surface thereof.

  In such an assembled state, that is, in the connection holding state (the state shown in FIGS. 17 and 18), the connection part of the long side pipe members 19A and 19B is connected from one long side pipe member 19A to the other long side. The connecting member 61 and the disengagement-preventing engaging member 64 that exist over the pipe member 19B ensure the rigidity in the direction perpendicular to the length direction at the connecting portion (the rigidity against the external force that is to be bent at the connecting portion). Therefore, it is possible to effectively prevent the connection portion from being bent or the connection portion from being damaged by a load or vibration applied when the bed is used.

On the other hand, if the knob-attached bolt 63 is loosened and extracted from the above-described fixed connection state, the fixed connection between the long-side pipe member 19B and the connecting member 61 is released. 19A can be separated from the long side pipe member 19B while sliding in the length direction with respect to the connecting member 61. Such a connection release / separation state is shown in FIGS.
During the separation, the second support pin 65B slides in the long hole 66 of the engagement member 64.

  If the long side pipe member 19B is separated from the tip of the connecting member 61, the long side pipe member 19A can be folded with respect to the long side pipe member 19B as shown in FIGS. That is, the disengagement preventing engagement member 64 is rotatable at one end side with respect to the long side pipe member 19B by the first support pin 65A and at the other end side by the second support pin 65B. Since it can rotate with respect to the pipe member 19A, the detachment preventing engagement member 64 can be folded as described above while being tilted with respect to the long side pipe members 19A, 19B. Moreover, the engagement member 64 for preventing separation prevents the one long side pipe member 19B and the other long side pipe member 19A from being separated (separated).

  In this way, if the long side frame pipe 19 is configured by two or more serial long side pipe members 19A and 19B, and the long side pipe members 19A and 19B are foldable, When storing and transporting on the bed provider side, it is possible to store, store, transport, etc. with the long side pipe members 19A, 19B folded to shorten the overall length of the pipe. It is possible to minimize the occurrence of space problems and handling problems. Here, the state in which the two or more long-side pipe members 19A and 19B are folded means a state in which the long-side pipe members 19A and 19B are not separated. Therefore, the long-side frame pipe 19 It is possible to always maintain an appropriate combination of two or more long side pipe members 19A, 19B that constitutes. Further, when the frame structure 16 is assembled, the long-side frame pipe 19 coupled and fixed in series can be obtained by a simple operation without making a mistake in the combination of the long-side pipe members 19A and 19B. In addition, in the present embodiment, the engagement member 64 prevents the long side pipe members 19A and 19B from falling apart, so that the handling is easy.

  In the above embodiment, the engagement member 64 for preventing separation is provided on the lower surface side of the abutting portion (connecting portion) of the long side pipe members 19A and 19B, and the long side pipe members 19A and 19B are provided on the frame structure 16. However, the surface on which the disengagement preventing engagement member 64 is disposed is not limited to the lower surface side of the connecting portion. For example, the butt portions of the long side pipe members 19A and 19B ( The long side pipe members 19 </ b> A and 19 </ b> B may be folded upward or downward within the vertical plane of the frame structure 16 by being provided on the side surface side (inner side or outer side of the frame structure body 16).

<Floor board (bottom)>
The floor board 20 is installed on the upper surface of the frame structure 16 and supports a mattress (not shown). The entire configuration of an example is shown in FIGS.
The floor board 20 of this embodiment is divided into five parts in the length direction (direction connecting the head side and the foot side). That is, the floor board 20 is divided into a back side floor board part 20A, a back side intermediate floor board part 20B, a center floor board part 20C, a foot side intermediate floor board part 20D, and a foot side floor board part 20E from the head side to the foot side. The space is connected so as to be able to undulate (turnable about a horizontal axis). And among these floor board parts 20A-20E, 20 C of center floor board parts are set as the structure fixed to the frame structure 16 so that attachment or detachment is possible with the volt | bolt etc. which are not shown in figure. Further, the back side floor board portion 20A and the back side intermediate floor board portion 20B are configured to be inclined with respect to the center floor board portion 20C by a back raising mechanism described later, and the foot side intermediate floor board portion 20D is centered by a foot raising mechanism described later. The floor plate 20C is lifted in an inclined manner.

  Furthermore, in this embodiment, the floor board 20 can be adjusted in its overall length (the length in the direction connecting the head side and the foot side) and at the same time, the overall width (head side and foot side). The length in the direction orthogonal to the direction of connection) can be adjusted. These adjustment mechanisms will be described later in detail.

The specific structure of each floor board part 20A-floor board part 20E which comprises the floor board 20 is demonstrated.
For example, the central floor board portion 20C extends over two parallel rail members 71A and 71B extending along the length direction of the floor board 20 in the vicinity of both sides in the width direction of the floor board 20 and the two rail members 71A and 71B. Further, for example, three parallel beam members 72A, 72B, 72C arranged along the width direction of the floor plate 20 and spaced apart, and the beam members 72A, 72B, 72C located on one end side in the width direction of the floor plate 20 The width end receiving member 73A along the length direction of the floor plate 20 and the other end side of the crosspiece members 72A, 72B, 72C are connected to the other end side in the width direction of the floor plate 20 so as to connect one end side of the floor plate 20 to each other. And a width end receiving member 73B along the length direction of the floor plate 20. The rail members 71A and 71B are fixed to the long side frame pipe 19 of the frame structure 16.

  The back side intermediate floor plate portion 20B has the same configuration, but in the back side intermediate floor plate portion 20B, in this example, there are two cross members (72A, 72B), and the rail members 71A, 71B are The long side frame pipe 19 of the frame structure 16 is free (unfixed).

  Furthermore, the back side intermediate floor plate portion 20B has the same configuration, but the back side intermediate floor plate portion 20B of this example has only one crosspiece member 72A. The rail members 71A and 71B are free with respect to the long side frame pipe 19 of the frame structure 16.

  Further, the back side floor board portion 20A has two parallel rail members 71A and 71B similar to those described above and the width direction of the floor board 20 so as to straddle the two rail members 71A and 71B. For example, there are five parallel beam members 72A to 72E arranged in parallel and width end receiving members 73A and 73B connecting the ends of the beam members 72A to 72E. The head side extended frame member 74A which becomes parallel is provided. Both ends of the head-side extension frame member 74A are connected to the rail members 71A and 71B by extension connection shafts 75A and 75B so that the distance from the crosspiece member 72E can be adjusted. The back side floor plate portion 20 </ b> A rail members 71 </ b> A and 71 </ b> B are free with respect to the long side frame pipe 19 of the frame structure 16.

  On the other hand, the foot-side floor board portion 20E also extends along the width direction of the floor board 20 so as to straddle the two parallel rail members 71A and 71B and the two rail members 71A and 71B, similarly to the back-side floor board portion 20A. In addition, for example, there are three parallel beam members 72A to 72C arranged at intervals, and width end receiving members 73A and 73B connecting the ends of the beam members 72A to 72C, and further, an end portion on the foot side Are provided with a leg-side extension frame member 74B that is parallel to the crosspiece member 72A. Both ends of the foot side extension frame member 75A are connected to the rail members 71A and 71B by extension connection shafts 75C and 75D so that the distance between the foot side extension frame member 75A and the crosspiece member 72A can be adjusted. Note that the foot side floor board portion 20E rail members 71A and 71B are free with respect to the long side frame pipe 19 of the frame structure 16.

<Flatboard length adjustment mechanism>
The distance between the head side extension frame member 74A and the crosspiece member 72E of the back side floor board portion 20A can be adjusted as described above, and the foot side extension frame member 74B is also a crosspiece member 72A of the foot side floor board portion 20E. The distance between the two can be adjusted, and such an adjustable configuration corresponds to a length adjusting mechanism of the floor board. Among such floorboard length adjusting mechanisms, a configuration in which the distance between the head-side extension frame member 74A and the crosspiece member 72E of the backside floorboard portion 20A is variable, that is, the length on the head side (the back end). Next, the adjustment mechanism will be described in detail with reference to FIGS.
27 to 29 are perspective views from the bottom surface side of the floor board 20, that is, one rail member 71A of the two rail members 71A and 71B in the back floor board portion 20A, The connection part with 74 A of head side extension frame members and the connection shaft 75A is expanded and shown.

  In the case of this embodiment, block-like support members 75 are attached to the lower surfaces of both end portions of the head-side tip frame member 74A, and the connecting shaft 75A extends from the support member 75 toward the rail member 71A of the back-side floor plate portion 20A. The portion of the connecting shaft 75A on the extending side is inserted into the rail member 71A so as to be slidable from the end thereof. Further, a rectangular tubular sliding member 76 made of resin or the like is attached on the outer periphery of the tip end portion (the portion inserted into the rail member 71A) of the connecting shaft 75A. The sliding member 76 is slidable in the length direction in the rail member 71A, and a through hole 76A is formed in a part of the outer peripheral wall thereof, and the through hole 76A in the outer peripheral portion of the connecting shaft 75A. A recess 75Aa is formed at a position corresponding to. In addition, in a space (depression) from the through hole 76A to the recess 75Aa, a button-like pressing operation member 77 that can advance and retreat along the axial direction of the through hole 76A and the pressing operation member 77 are biased outward. The coil spring 78 is housed. On the other hand, for example, two through holes 79A and 79B are formed in the wall portion near the end of the rail member 71A at intervals in the length direction of the rail member 71A corresponding to the pressing operation member 77 described above. Has been. These through holes 79A and 79B are formed so that the head of the pressing member 77 can be inserted from the inside, and the head can be exposed to the outer surface of the rail member 71A. The distance between the centers of the through holes 79A and 79B is set to ½ of the difference between the extended state and the shortened state in the length direction of the floor board.

In the above, about the head side floor board length adjustment mechanism, one rail member 71A of two rail members 71A and 71B in the back side floor board part 20A, the head side extension frame member 74A, and the connecting shaft 75A However, the relationship between the other rail member 71B, the head-side extension frame member 74A, and the connecting shaft 75B in the back floor plate portion 20A is the same as described above.
Further, the foot side floor board length adjusting mechanism, that is, the foot side extension frame member 74B is also connected to the foot side floor board by the connecting shafts 75A and 75B so that the distance between the foot side floor board portion 20E and the crosspiece member 72A can be adjusted. The structure connected to the crosspiece member 72A of the portion 20E is the same as described above.

The length adjustment by the floor board length adjustment mechanism as described above can be performed as follows.
Here, length adjustment on the head side will be described.
For example, FIG. 26 to FIG. 29 show the extended state on the head side, and in this state, of the two through holes 79A, 79B formed at intervals in the length direction of the rail member 71A, the rail member The head of the pressing operation member 77 enters the through hole 79A on the distal end side of the 71A from the inside thereof, and is exposed to the outer surface side of the rail member 71A, whereby the connecting shaft 75A extends from the rail member 71A long. In this state (the state in which the distance between the head-side tip frame member 74A and the crosspiece member 72E of the back-side floor plate portion 20A is maximized), that is, in the extended state, the state is maintained.

  From this state, when the pressing operation member 77 is pushed by a finger or the like against the urging force of the coil spring 78, the sliding member 76 can slide in the length direction of the rail member 71A. While keeping the pushed state, the head side distal end frame member 74A is pushed toward the crosspiece member 72E of the back side floor plate portion 20A, and the sliding member 76 is slid leftward in FIG. When the pressing operation member 77 reaches the position of the through hole 79B on the side away from the tip of the rail member 71A, the head of the pressing operation member 77 enters the through hole 79B by the biasing force of the coil spring 78, thereby shortening. Positioning is performed in the state, and holding in the shortened state is performed.

  On the contrary, if the pressing operation member 77 is pushed in from the shortened state and the sliding member 76 is slidable and the head-side distal end frame member 74A is pulled out, it can be returned to the aforementioned extended state again.

In addition, although the expansion | extension and shortening operation was demonstrated only about one (71A) side among two parallel rail members 71A and 71B located in the both sides of the width direction of the floor board 20 here, the above operations are Of course, to do both sides at the same time.
Furthermore, although the length adjustment on the head side has been described above, the foot side can be similarly extended and shortened.

<Floor width adjustment mechanism>
As described above, the width of the floor board 20 can be adjusted. Therefore, the width adjusting mechanism in the present embodiment will be described with reference to FIGS. 23, 26, and 30 to 32. FIG. 30 to 32, among the floor plate portions 20 </ b> A to 20 </ b> E constituting the floor plate 20, the width adjusting mechanism in the back side floor plate portion 20 </ b> A is on one side in the width direction (the width end receiving member 73 </ b> A side). The structure of is shown.

The width end receiving member 73A is positioned on the outer side (outside in the width direction of the floor plate 20) of the crosspiece members 72A to 72E of the back side floor plate portion 20A, and the direction in which the crosspiece members 72A to 72E are arranged (the length of the floor plate 20). And a pair of upper and lower tongue pieces 73Ab and 73Ac extending from the upper and lower surfaces of the base portion 73Aa toward the crosspiece members 72A to 72E, respectively. The tongue piece portions 73Ab and 73Ac are arranged so that the extending side portions sandwich the vicinity of the end portions of the crosspiece members 72A to 72E from above and below. In addition, as shown in FIG. 30, a rising wall 73Ad that rises upward is formed at the edge of the base portion 73Aa of the width end receiving member 73A on the outer side in the width direction of the floor plate 20 in the length direction of the base portion 73Aa (floor plate). 20 in the longitudinal direction). The rising wall 73Ad is for receiving the end surface (side surface) in the width direction of the mattress placed on the floor board 20 and preventing the mattress from moving in the width direction.
In such a width end receiving member 73A, the distance between the base portion 73Aa and the end portions of the crosspiece members 72A to 72E can be adjusted. Such an adjustable configuration is a floor board width adjusting mechanism. It corresponds to.

  In the case of the present embodiment, two of the crosspiece members 72A to 72E in the back side floor plate portion 20A from the side surface side of the base portion 73Aa of the width end receiving member 73A (each crosspiece member) are directed to 72A and 72E on both sides. 72A and 72E, two width end connecting shafts 80A and 80B extend in parallel (in the width direction of the floor plate 20), and the width end connecting shafts 80A and 80B allow the width end receiving member 73A to It is connected and supported on the end side of the members 72A and 72E.

  The part which shows the relationship between the crosspiece member 72A of one end of each crosspiece member 72A-72E in said back side floor board part 20A, and the width | variety edge receiving member 73A is expanded and shown in FIGS. This part will be described in more detail.

  The crosspiece member 72A is formed in a shape extending in the width direction of the floor plate 20, such as a resin or an aluminum alloy, in a hollow cylindrical shape, for example, a substantially square pipe shape. Then, one end side (base end side) portion of the width end connecting shafts 80A and 80B is fixed to the base portion 73Aa of the width end receiving member 73A, and the other end side (tip end side) portion of the width end connecting shafts 80A and 80B is fixed. The bar member 72A is inserted into the hollow portion inside thereof from the end portion. A block-shaped sliding member 81 made of resin or the like is attached to the tip of the portion inserted into the crosspiece member 72A in the width end connecting shafts 80A and 80B. The sliding member 81 is slidable in the length direction within the crosspiece member 72A. A concave portion 81A is formed on the upper surface side of the sliding member 81. The concave portion 81A holds a coil spring 82 and a button-like pressing operation member 83 biased by the coil spring. On the other hand, on the upper surface near the end of the crosspiece member 72A, two positioning portions, for example, two positioning through-holes 84A, are provided at intervals in the length direction of the crosspiece member 72A corresponding to the pressing operation member 83 described above. , 84B are formed. Each of the positioning through holes 84A and 84B is formed such that the head of the pressing operation member 83 is inserted from the inside, and the head can be exposed to the outer surface (upper surface) of the crosspiece member 72A. .

  The tongue piece portions 73Ab and 73Ac extending from the upper and lower surfaces of the base portion 73Aa have portions on the extending side sandwiching the end portion of the crosspiece member 72A from above and below, but the tongue piece portions 73Ab and 73Ac are In order not to conceal the through holes 84A and 84B, the position of the extended end is set to a position closer to the end of the crosspiece member 72A than the through holes 84A and 84B.

  In the above description, with reference to FIGS. 30 to 32, the relationship between the one end portion of the width end receiving member 73 </ b> A and the crosspiece member 72 </ b> A on one end side of the back floor plate portion 20 </ b> A has been described. The relationship between the portion on the other end side of 73A and the crosspiece member 72E on the other end side in the back side floor plate portion 20A is substantially the same. That is, the same width end connecting shafts 80A and 80B are extended toward the crosspiece member 72E from the base portion on the other end side of the width end receiving member 73A, and the front end side of these width end connecting shafts 80A and 80B. Is inserted into the crosspiece member 72E, and a block-like sliding member 81 made of resin or the like is attached to the insertion tip portion of the width end connecting shafts 80A and 80B. However, unlike the sliding member 81 shown in FIGS. 30 to 32, the sliding member 81 at the distal end portion of the width end connecting shafts 80A and 80B inserted into the crosspiece member 72E differs from the coil spring 82 and the pressing operation member. 83 is not provided. Accordingly, the crosspiece member 72E is not provided with the positioning through holes 84A and 84B as described above. It is to be noted that the tongue piece portions 73Ab and 73Ac that sandwich the vicinity of the end portion of the crosspiece member 72E from above and below extend from the vicinity of the other end portion of the width end receiving member 73A as in FIGS.

  Further, regarding the relationship between the intermediate portion of the width end receiving member 73A and the crosspiece members 72B to 72D in the back side floor plate portion 20A, the one end side portion of the width end receiving member 73A and the crosspiece member 72A shown in FIGS. Unlike the above relationship, the width end connecting shafts 80A and 80B and the sliding member 81 are not provided. On the other hand, it has a pair of tongue pieces 73Ab and 73Ac extending from the central portion of the width end receiving member 73A toward the crosspiece member 72B and sandwiching the crosspiece members 72B to 72D from above and below. It is the same.

  About the width adjustment function on one side in the width direction (the side of the width end receiving member 73A) in the back side floor plate portion 20A among the floor plate portions 20A to 20E constituting the floor plate 20 as described above. Next, it will be described.

  FIGS. 30 to 32 show a state in which the width is extended. In this state, of the two positioning through holes 84A and 84B in the beam member 72A, the beam is inserted into the through hole 84A on the side close to the tip of the beam member 72A. A state where the head of the pressing operation member 83 enters from the sliding member 81 inside the member 72A and the sliding member 81 does not slide in the cross member 72A, that is, the width end receiving member 73A is positioned by the through hole 84A. It is in a state of being held at a fixed position (extended position in the width direction).

  From this state, if the pressing operation member 83 is pushed against the urging force of the coil spring 82, the sliding member 81 can slide in the cross member 72A, that is, the wide end receiving member 73A is connected to the cross members 72A to 72E. It will be in the state which can be moved to the direction (direction which shortens the width | variety of the floorboard 20) which pulls in contact. In this state, if the width end receiving member 73A is pushed in a direction close to the crosspiece members 72A to 72E, the sliding member 81 slides in the crosspiece member 72A, and the pressing operation member 83 becomes the tip of the crosspiece member 72A. When reaching the positioning through hole 84B far from the head, the head of the pressing member 83 enters the positioning through hole 84B from the inside by the biasing force of the coil spring 82, and the sliding member 81 slides in the cross member 72A. In other words, the width end receiving member 73A is positioned by the through hole 84B and is held at a fixed position (width direction shortened position) different from the width direction extended position.

  Thus, about the back side floor board part 20A of each floor board part 20A-floor board part 20E by moving width end receiving member 73A in the direction which approaches and separates from the edge part of crosspiece members 72A-72E, The width adjustment can be performed on one side in the width direction (the side of the width end receiving member 73A).

On the other hand, the width adjustment on the other side (width end receiving member 73B side) in the width direction of the back side floor plate portion 20A is also a direction in which the width end receiving member 73B approaches and separates from the end portions of the crosspiece members 72A to 72E. It can be done in the same way by moving to.
In addition, the relationship between the width end receiving members 73A and 73B provided at both ends in the width direction of the central floor plate portion 20C, the foot side intermediate floor plate portion 20D, and the foot side floor plate portion 20E is as described above. Is almost the same. Therefore, by moving the width end receiving members 73A and 73B toward the end portions of the crosspiece members 72A to 72C, the center floor plate portion 20C, the foot side intermediate floor plate portion 20D, and the foot side floor plate portion 20E are moved in a direction to approach and separate from the end portions of the crosspiece members 72A to 72C. The width is adjustable.

  Here, the tongue pieces 73Ab and 73Ac extending from the base portion 73Aa of the width end receiving members 73A and 73B and sandwiching the end portions of the crosspiece members 72A to 72D from above and below are loaded on the width end receiving members 73A and 73B. When this is added, it functions effectively to increase the rigidity of the portion that supports the width end receiving members 73A and 73B. That is, when a mattress (not shown) is placed on the floor plate 20, for example, when a bed user gets on or off the mattress or sits down, a large unbalanced load is applied to one or both end portions in the width direction. The large offset load at the end in the width direction is applied to the width end receiving members 73A and 73B. Therefore, if the rigidity of the portion supporting the width end receiving members 73A and 73B is low, the supporting portion may be deformed or damaged. However, since the tongue piece portions 73Ab and 73Ac are spanned from the width end receiving members 73A and 73B to the crosspiece members 72A to 72E, they serve to reinforce the support portion, and increase the rigidity of the support portion. Even when an unbalanced load is applied, it is possible to effectively prevent the support portion from being deformed or damaged.

  In the present embodiment, the width end receiving members 73A and 73B are disposed on both sides (both sides in the width direction of the floor plate 20) of the floor plate portions 20A and 20C to 20E. It is allowed to arrange the width end receiving member only on one side of 20D (one side in the width direction of the floor board 20).

  In addition, it is possible to appropriately select which floor plate portion the width end receiving member is arranged on both sides or one side. For example, it is allowed to arrange the width end receiving members on both sides or one side of all floor plate portions 20A, 20C to 20E.

<Backboard raising mechanism and foot raising mechanism>
As described above, the floor board 20 is divided into a plurality (five in the present embodiment) of floor board portions 20A to 20E in the length direction so that the back board can be raised and the legs can be raised. The back-up operation is, for example, an operation of first rotating the back side floor board 20A from the horizontal state until it is inclined upward by a predetermined angle, and further rotating the back side intermediate floor board 20B from the horizontal state until it is inclined upward by a predetermined angle. And it is sufficient. Accordingly, the back raising mechanism is not particularly shown, but rotates the back floor plate portion 20A around the first rotation shaft connecting the back side floor plate portion 20A and the back intermediate floor plate portion 20B, and then continues to the back side. An electric motor, a gear mechanism, a cam mechanism, a link mechanism, or the like is combined so as to rotate the back side intermediate floor plate 20B around a second rotation shaft (not shown) that connects the intermediate floor plate 20B and the central floor plate 20C. What is necessary is just composition.

  Further, for example, the foot-lifting operation may be an operation of rotating the foot-side intermediate floor plate portion 20D from the horizontal state to a predetermined angle upward while keeping the foot-side floor plate portion 20E horizontal. Therefore, although not specifically shown, the foot raising mechanism tilts the foot-side intermediate floor plate 20D upward from the horizontal state by a predetermined angle about the third connecting shaft that connects the central floor plate 20C and the foot-side intermediate floor plate 20D. At the same time, the foot side floor board portion 20E is rotated in the opposite direction by the same angle with respect to the foot side intermediate floor board portion 20D to keep the foot side floor board portion 20E horizontal. The cam mechanism, the parallel link mechanism, and the like may be combined.

  In addition, these back raising mechanisms and foot raising mechanisms are provided on the lower surface side of the central floor board portion 20C, for example, and the other floor board portions 20A, 20B, 20D, and 20E are pushed up by an operating rod extending from these mechanisms. , Etc. may be used.

<Composition of other parts of bed>
When the frame structure 16 as described above is actually used as a bed, the head board 22 and the foot board 24 are attached to the frame structure 16 as in the case of FIGS. 32 to 35 shown as the prior art. Of course, in many cases, the headboard 22 is detachably inserted between the columns 17A and 17B, and the footboard 24 is detachably inserted between the columns 17C and 17D. And it is sufficient. Moreover, when attaching the fence member 26, the fence member 26 should just be attached to the long side frame pipe 19 in the long side frame division bodies 16A and 16B of the frame structure 16 so as to be detachable by screws or the like. .

  The type and composition of the aluminum alloy used for the pipe portion in the bed structure are not particularly limited. For example, an Al-Mg alloy (No. 5000 series alloy), an Al-Mg-Si series alloy (No. 6000). Alloy), Al-Zn-Mg alloy (No. 7000 alloy) can be used, but from the viewpoint of strength, extrudability, corrosion resistance, etc., JIS 6N01 alloy, JIS 6061 alloy, JIS 6063 alloy, etc. Is appropriate.

 In addition, the bed floor board of the present invention is optimal for home care beds provided by rental, but can also be used for care beds used in care facilities and nursing homes, patient beds in hospitals, etc. Of course.

  DESCRIPTION OF SYMBOLS 16 ... Frame structure, 20 ... Floor board, 20A-20E ... Floor board part, 71A, 71B ... Rail member, 72A-72E ... Crosspiece member, 73A, 73B ... Wide end receiving member, 73Aa ... Base part, 73Ab, 73Ac ... Tongue One part, 79A, 79B ... Positioning through hole (positioning part), 80A, 80B ... Wide end connecting shaft, 81 ... Sliding member.

Claims (8)

It is a floor for a bed that is rectangular in plan view as a whole,
One or two or more floor plate portions, a rail member extending along the length direction of the floor plate so as to support the floor plate portion, and a width end receiving member positioned outside at least one end of the floor plate portion in the width direction of the floor plate And
The bed floorboard, wherein the width end receiving member is connected to the floorboard portion so that a distance between the width end receiving member and the end portion of the floorboard portion can be adjusted.   Among each floor plate portion, one or more floor plate portions are composed of a plurality of cross members extending in the width direction of the floor plate and arranged in parallel at intervals in the length direction of the floor plate, and the width end receiving member is Provided on the outside of the end portions of the plurality of crosspiece members along the direction in which the plurality of crosspiece members are arranged, and the distance between the width end receiving member and the end portion of the crosspiece member is adjustable It is connected with the edge part of each said crosspiece member so that it may become, The flooring board for beds of Claim 1 characterized by the above-mentioned.   The width end receiving member has a base portion located outside the end portion in the floor plate width direction of the floor plate portion, and a width end connecting shaft extends from the base portion toward the floor plate portion, and the width end connection The bed floor board according to any one of claims 1 and 2, wherein a portion on the extending end side of the shaft is inserted into the floor board portion so as to be relatively slidable.   A sliding member that is slidable in the width direction of the floor plate within the floor plate portion is provided in a portion on the extending end side of the width end connecting shaft of the width end receiving member, and the floor plate portion includes the floor plate. The bed according to claim 3, wherein a positioning portion for positioning two or more holding positions adjusted in the width direction is formed, and each adjusted holding position can be held by the positioning portion. Floorboard.   A pair of upper and lower tongue pieces extend from the base portion of the width end receiving member toward the floor plate portion, and the portions on the extended end side of these tongue piece portions sandwich the end portion of the floor plate portion. The bed floor board according to any one of claims 3 and 4, wherein the bed floor board is configured as described above.   The width end receiving members are respectively provided outside both ends of the floor plate in the width direction of the floor plate portion, and the distance between each width end receiving member and each end portion of the floor plate portion is adjusted. The bed floor board according to any one of claims 1 to 5, wherein the bed floor board is connected to the floor board portion so as to be possible.   The plurality of floor boards are provided side by side in the length direction of the floor boards, and the floor boards are connected to each other so as to be rotatable about a horizontal axis. The bed floor board according to claim 6.   A floor structure for a bed according to any one of claims 1 to 7, a frame structure that supports the bed floor board from the lower surface side, and has a long rectangular shape in plan view as a whole, and the frame structure And a lift mechanism that lifts and lowers the bed relative to the bed installation surface.

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