JP4338503B2 - bed - Google Patents

Description

  The present invention relates to a bed capable of creating a comfortable reclining state and further enhancing the comfort of use.

  In recent living habits, watching TV or reading while lying on a bed, and taking a light meal are frequently performed. In view of the use situation of such a bed, for example, as shown in FIG. 14, a first tilting part b1 that can be bent in a direction to rise on the head part side of the bed part, and a head side of the first tilting part b1 A bed a provided with a second tilting portion b2 that is arranged on the first tilting portion b1 and is connected to the first tilting portion b1 so as to be bendable is proposed in Patent Document 1 below. The user usually uses the bed a by placing the upper body on the first tilting part b1 and the head on the second tilting part b2.

  And in this bed a, as shown in the figure, in order to support the posture in which only the head is lifted, the first tilting portion b1 is initially tilted in the direction in which only the second tilting portion b2 is raised while maintaining the horizontal state. The tilted state F1 and the posture in which the upper body is lifted together with the head by raising the first tilted part b1 while keeping the second tilted part b2 tilted with respect to the first tilted part b1. It can change to the late tilt state F2 to support.

JP 2003-24179 A

  However, in the conventional bed a as described above, the head can be lifted in the initial tilted state F1, but the bending angle θ of the second tilted portion b2 is set to ensure a certain level of height. , About 20 degrees or more is required. At this time, since the user's head is supported in a posture tilted forward by 20 degrees or more with the neck as a fulcrum, the chin is retracted and the neck is easily compressed. This tendency is particularly noticeable when using pillows.

  Further, even in the late tilt state F2 in which the upper body is lifted, the relative angle θ between the first tilt portion b1 and the second tilt portion b2 is maintained, so that the neck portion is likely to be bent similarly. Thus, the conventional bed has room for further improvement with respect to the reclining mode.

  The present invention has been devised in view of the above-described problems. The head support frame portion is extended with the back support frame portion in a straight line, the head support frame portion is lifted with respect to the back support frame portion, and the front end faces upward. The main objective is to provide a bed that can create a more comfortable reclining form and further enhance the comfort of use, based on changing the head to a reclining state that can tilt.

In order to achieve the above object, the invention according to claim 1 is a bed comprising a bedding receiving frame having a bedding placement surface on which a bedding is placed, and a bed frame body supporting the bedding receiving frame. The bedding receiving frame includes an upper body support frame portion that receives the upper body of the sleeper, and the upper body support frame portion is pivotally supported at the rear end portion that receives the sleeper's back and is on the leg portion side of the sleeper. A back support frame part that can be raised and lowered, a head support frame part that is provided at a front end portion on the head side of the sleeping person and receives the sleeping person's head, the back support frame part, and the head support frame The bed frame body includes a tilting means for lifting the head support frame part, and the tilt part includes the back support frame part and the head support frame part. An extended state that is in a straight line, and the head support frame portion lifted by the raising and lowering means is the back support frame. Wherein the linking tiltably between the head reclined inclined in the upward front end of having a step and the head supporting frame portion in a direction perpendicular to.

The invention according to claim 2 is characterized in that the tilting portion is provided at the front end portion of the back support frame portion so as to be tiltable in a vertical plane including the bed length direction and has a guide hole extending vertically. And a slide part having a slide shaft that hangs down from a rear end of the head support frame part and is slidably inserted into the guide hole. The head support part includes a slide shaft that moves upward in the guide hole. 2. The head support frame portion is lifted independently of the back support frame portion by sliding toward the head portion, and tilted to the head reclining state in which the front end portion of the head support frame portion is inclined upward by the tilting of the guide portion. It is a bed as described in.

According to a third aspect of the present invention, the slide shaft is formed with a retaining portion that is prevented from slipping out of the guide hole when sliding upward from the head reclining state, and the back support frame portion is 3. The bed according to claim 2, wherein the bed is lifted together with the head support portion while maintaining the head reclining state via the slide portion and the guide portion by a stop portion .

  According to a fourth aspect of the present invention, in the head reclining state, the head support frame portion is inclined at an angle of 2 to 10 degrees with respect to the back support frame portion. And the bed frame is composed of a pair of half bed frames that can be bent in an inverted V shape. A bed according to any one of the above.

  As described above, when the head support frame is lifted from the bedding receiving frame, the bed of the present invention is in a head reclining state in which the head support frame is lifted with respect to the back support frame and the front end can be tilted upward. Because it changes, it is possible to lift the head while reducing pressure on the neck. This makes it possible to obtain a relaxed and comfortable reclining state without feeling tired such as shoulder stiffness even when used for a long time such as watching TV or reading. Moreover, in the initial tilted state in which only the head support frame portion is lifted, the same comfortable sleeping feeling as when using a pillow without a pillow can be obtained.

  As in the second aspect of the invention, when the tilting portion is composed of a guide portion that can tilt within a vertical plane including the bed length direction and a slide portion that moves up and down with respect to the guide portion, The change to the head reclining state can be smoothly supported.

  According to the third aspect of the present invention, the slide shaft that moves up and down in the guide hole of the guide portion is retained by the guide hole at the time of maximum sliding upward, so that the back is supported by the head support frame portion tilted by the arm body. The support frame can be reliably lifted.

  When the head support frame is inclined at an angle of 2 to 10 degrees with respect to the back support frame in the head reclining state as in the invention described in claim 4, the pressure on the neck of the sleeping person is surely reduced. In addition, when the bed frame is composed of a pair of half bed frames that can be folded in an inverted V shape as in the invention of claim 5, the present invention is applied to a folding bed. Can be applied to obtain a comfortable reclining state.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the bed 1 of the present embodiment, and FIG. 2 is a plan view thereof.

  The bed 1 of this embodiment is exemplified by a bed frame 3 that can be folded in an inverted V shape and a bedding receiving frame 2 that is arranged on the bed frame 3 and on which the bedding is placed. The The bed frame 3 is configured by connecting the first bed frame half 13A and the second bed frame half 13B so as to be bent in an inverted V shape.

  The first bed frame half 13A includes a main frame 31a obtained by bending a frame material into, for example, a substantially U shape or a rectangular shape (in this example, a U shape) in plan view, and reinforcing members 31b and 31c extending vertically and horizontally. Are integrally fixed. The first bed frame half body 13A has a length substantially half the bed length (for example, 900 to 1000 mm). In this embodiment, the upper half of the sleeping person is placed on the first bed frame half 13A side. Moreover, 13 A of 1st bed frame half bodies are pivotally attached to the joint material 33 so that rotation is possible using a pin etc. in the rear side part to which a leg part of a sleeper faces. Further, on the front end side of the first bed frame half body 13A, first leg members 34 are provided on both sides in the width direction of the bed.

  The first leg members 34, 34 are constituted by a leg frame 34a having an inverted T-shape in this example, and caster wheels 34b attached to the lower part thereof. The leg frame 34a is pivotally attached to the first bed frame half body 13A by a pin. Further, the first leg members 34 on both sides are integrally fixed by a connecting rod 35 extending in the width direction of the bed below the first bed frame half body 13A. Further, in this embodiment, an example is shown in which the front end portion of the first bed frame half body 13A is attached with a finishing plate 36 that is finished in a decorative manner and rises vertically.

  Similarly to the first bed frame half body 13A, the second bed frame half body 13B is formed by integrally fixing a main frame 32a obtained by bending a frame material into a substantially U-shape and a reinforcing material 32b. . The second bed frame half 13B also has a length that is approximately half the bed length. The front end portion of the second bed frame half 13B is pivotally attached to the joint member 33 by a pin. In the present embodiment, the first and second bed frame halves 13A, 13B are supported by different shafts that are separated in the length direction of the bed, but may be supported by the same shaft.

  A second leg member 38 is fixed to the main frame 32a of the second bed frame half body 13B via an attachment shaft 37 protruding in the width direction of the bed. Thereby, it can prevent that the 1st, 2nd leg members 34 and 38 interfere when folding. The second leg member 38 serves as a handrail by a portion protruding in the height direction from the second bed frame half body 13B, and a grounding wheel 39 is provided at an end extending downward. Thus, the first and second bed frame halves 13A and 13B can be smoothly moved during folding.

  The joint members 33, 33 provided on both sides of the bed in the width direction are integrated by being fixed to both ends of the connecting member 40, and the intermediate support leg 41 is fixed to the connecting member 40. The intermediate support leg 41 is in contact with the floor surface in a horizontal state. Accordingly, the bed load is supported by the first and second leg members 34 and 38 and the intermediate support leg portion 41, and the stability during use is enhanced.

  For example, a tension spring 42 can be bridged between the intermediate support leg 41 and the first bed frame half 13A and between the intermediate support leg 41 and the second bed frame half 13B. As described above, the first bed frame half 13A is pivotally supported at the front end of the joint member 33, and the second bed frame half body 13B is pivotally supported at the rear end of the joint member 33. The bed 1 can be stored in a compact manner by bending the bed frame half 13A and the second bed frame half 13B so as to be in a vertical position. At that time, the tension spring 42 reduces the operating force at the time of folding and reduces the impact at the time of deployment. The extension position of the tension spring 42 can be changed, and the bed 1 can be automatically folded and unfolded by using an electric motor or the like.

  Further, the joint member 33 has a substantially ring-shaped handle 44 projecting in the width direction of the bed. By holding the handle 44, the folding and unfolding operation of the bed 1 can be performed easily and safely. it can.

  The bedding receiving frame 2 supports an upper body support frame portion 14 that receives the upper body of a sleeping person, a heel support frame portion 15 that receives a heel portion, and a leg portion, which are disposed in the bed length direction of the bed frame body 3. And a leg support frame portion 16 to be operated. The width of the bedding receiving frame 2 is wider than that of the bed frame 3, and is formed to be, for example, about 800 to 1800 mm.

  The leg support frame portion 16 includes a frame body 16A in which pipe members or the like are combined in a horizontally long rectangular shape, a wire net-like underlay material 16B disposed in a space surrounded by the frame body 16A, and a vertical direction of the folding bed 1A. The extending reinforcing material 16C is fixed to the second bed frame half body 13B using a bolt or the like.

  The eaves support frame portion 15 includes a frame body 15A in which pipe members or the like are combined in a horizontally long rectangular shape, a wire net-like underlay material 15B disposed in a space surrounded by the frame body 15A, and a vertical direction of the folding bed 1A. The extending reinforcing material 15C is fixed to the rear side of the first bed frame half 13A of the bed frame 3 using bolts or the like.

  The upper body support frame portion 14 is disposed on the front side of the heel support frame portion 15, and in this embodiment, includes a back support frame portion 4 that receives the back and a head support frame portion 6 that receives the head.

  The back support frame 4 includes a frame 4A in which pipe members and the like are combined in a horizontally-long rectangular shape, an underlay 4B that is placed in a space surrounded by the inside of the frame 4A and on which a bedding can be placed, and a bed of the bed 1A And a reinforcing material 4C extending in the length direction. Further, as shown in FIG. 1, the rear end portion of the back support frame portion 4 is connected to the front end portion of the heel support frame portion 15 so as to be able to be tilted up and down using a connection fitting 45 and a pin P1. ing. Since the back support frame portion 4 is not fixed to the first bed frame half 13A at other portions, the horizontal position supported by the main frame 31a of the lower first bed frame half 13A; It can be bent with respect to the heel support frame portion 15 and change to a position where it rises from the first bed frame half body 13A. In this embodiment, the back support frame portion 4 has its rear end connected to the front end of the heel support frame 15 so that it can be raised and lowered, but it can be raised and lowered directly to the first bed frame half 13A. You may connect to.

  The head support frame 6 includes a frame 6A in which pipe members and the like are combined in a horizontally long rectangular shape, an underlay 6B that can be placed on a space surrounded by the inside of the frame 6A and on which a bedding can be placed, and a bed length direction. And a reinforcing material 6C that extends, and is arranged on the front side of the back support frame 4 with a small gap. The head support frame portion 6 preferably has a length (length along the bed length direction) suitable for mounting the user's head, and is not particularly limited, but is formed to be, for example, about 230 to 350 mm. The

  Further, the rear end portion of the head support frame portion 6 is connected to the front end portion of the back support frame portion 4 via the tilting portion 5. In this embodiment, the tilting portion 5 includes a guide portion 9 provided at the front end portion of the back support frame portion 4 and a slide portion attached to the rear end portion of the head support frame portion 6 as shown in FIG. 10.

  In this embodiment, the guide portion 9 includes a cylindrical body 9A and a swinging portion 9B. The cylindrical body 9A is made of a pipe material having a circular cross section and has a guide hole 11 extending vertically. The head swinging portion 9B is formed of a substantially U-shaped metal fitting in a plan view in which vertical pieces 9B1 and 9B1 separated in the bed width direction are connected by an arc piece 9B2. The cylindrical body 9A is fixed to the inner peripheral surface of the arc piece 9B2, for example, by welding.

  For example, the guide portion 9 is attached to an outer frame portion 4A1 extending in the bed width direction at the front end of the frame body 4A of the back support frame portion 4 via a square pipe-shaped mounting bracket 48. The mounting bracket 48 is integrally fixed to the lower surface of the outer frame portion 4A1 through a mounting plate 43 by welding, bolts or the like. The vertical pieces 9B1 and 9B1 of the swinging portion 9B are pivotally supported between the side pieces 48a and 48a of the mounting bracket 48 by a horizontal shaft 48b (bolt) in the bed width direction, whereby the guide portion 9 is supported by the back. The front end portion of the frame portion 4 is provided so as to be tiltable in a vertical plane including the bed length direction.

  In this embodiment, the slide portion 10 is constituted by a slide shaft 12 inserted into the guide hole 11 of the guide portion 9, and the upper end portion of the slide portion 10 is a bed at the rear end portion of the frame body 6 </ b> A of the head support frame portion 6. It is suspended from the rear end portion of the head support frame portion 6 by being integrally fixed to the outer frame portion 6A1 extending in the width direction by welding.

  Further, the slide shaft 12 of the present embodiment has a shaft portion 12a having a circular cross section and a large-diameter retaining portion 12b provided at the lower end portion thereof. The shaft portion 12a has an outer diameter that is slightly smaller than the inner diameter of the guide hole 11 of the cylindrical body 9A. However, when sliding upward, the retaining portion 12b comes into contact with the lower end surface of the cylindrical body 9A, whereby the maximum slide amount of the slide shaft 12 is restricted, and the slide shaft 12 is prevented from slipping out of the guide portion 9. .

  As shown in FIG. 5 (A), when the head support frame portion 6 that is in a straight line with the back support frame portion 4 and forms the extended state S on the first bed frame half body 13A is pushed upward. The slide shaft 12 of the tilting part 5 rises with respect to the guide part 9. Accordingly, as shown in FIGS. 3 and 5B, the head support frame 6 is lifted with a step relative to the back support frame 4 and is pivotally supported by the mounting bracket 48. Tilts to change the head reclining state R tilted with respect to the back support frame 4 with the front end facing upward.

  The maximum slide amount of the slide shaft 12 can be performed by changing the length of the shaft portion 12a. Preferably, the maximum slide amount is 30 to 100 mm, more preferably 30 to 80 mm. If the maximum slide amount is less than 30 mm, the lifting height of the sleeper's head supported in the head reclining state R is insufficient, so that the usability is bad, and if it exceeds 100 mm, the head position in the head reclining state R is poor. Is too high and the neck is compressed.

  In addition, in this embodiment, the vertical angle 9B1 of the swinging portion 9B is in contact with the upper piece 48c of the mounting bracket 48 so that the head support frame 6 tilts with respect to the back support frame 4. It is regulated by. When the angle θ is set to about 2 to 10 degrees, since the gradient is gentle, the head is lifted by the head support frame 6 as in the conventional case, and the neck is not compressed. It is desirable in that it does not cause stiff shoulders and fatigue even when sleeping for a long time. In addition, in addition to the tilting of the swinging portion 9B, the angle θ includes an angular displacement caused by the backlash between the cylindrical body 9A and the slide shaft 12 (the axial center of the cylindrical body 9A and the axial center of the slide shaft 12). Angular displacement caused by misalignment).

  The head support frame 6 is lifted by the raising / lowering means 49. In this embodiment, the raising / lowering means 49 includes a raising / lowering spindle 50, a pair of arm bodies 7 extending from the raising / lowering spindle 50, a raising / lowering lever 51 extending from the raising / lowering spindle 50, and a driver 8. The configuration is illustrated.

  The raising / lowering main shaft 50 is composed of a circular pipe extending in the horizontal direction between the reinforcing members 31b, 31b of the first bed frame half body 13A, and both ends thereof are between bearing pieces 46, 46 provided on the reinforcing member 31b. It is pivotally supported. Further, the raising / lowering lever 51 is configured to include a pair of mounting plates 51a having a base portion fixed to the raising / lowering main shaft 50 and having a small interval.

  In the present embodiment, the driver 8 is a straight line using a ball screw mechanism including a main body portion 47a having an electric motor and the like, and a rod 47b that can freely expand and contract (in / out) from the main body portion 8a by normal rotation and reverse rotation of the electric motor. It consists of an electric exerciser 47. The linear electric exerciser 47 has its main body portion 47a pivotally attached to the reinforcing member 31c of the first bed frame half body 13A via a bracket or the like, and its rod 47b is a mounting plate for the tilting lever 51. The pin 51 is rotatably attached to the pin 51a, and is supported so as to be tiltable in a vertical plane. When the linear electric exerciser 47 expands and contracts the rod 47b, the raising / lowering lever 51 is tilted and the raising / lowering main shaft 50 is rotated. As a result, the arm body 7 is rotated in the vertical plane.

  In this embodiment, as shown in FIG. 3, the arm body 7 has a flat rectangular tube shape with a rectangular cross section, and a main portion 7a extending from the tilting main shaft 50 and a bending portion 7b at the tip of the main portion 7a. The support arm part 7c bent in the vertical plane which faces the front-back direction of the bed is illustrated. Further, the arm body 7 of this embodiment has a sliding portion 52 that is engaged with the sliding receiving portion 53 of the head support frame portion 6 fixed to the tip thereof.

  As shown in FIGS. 6 and 7, the sliding portion 52 of this embodiment includes a groove-shaped sliding base portion 52a fixed to the tip of the support arm portion 7c by welding, and a flange portion 52b of the sliding base portion 52a. , 52b and a roll 52c pivotally supported by a sliding pin P4.

  The sliding receiving portion 53 has a downward groove shape fixed to the lower surface of the reinforcing member 6C of the head support frame portion 6, and includes slit-like guide portions 53b on both flange portions 53a and 53a. 6 and 7, the sliding portion 52 of the arm body 7 is inserted into the sliding receiving portion 53, and both end portions of the sliding pin P4 of the sliding portion 52 are sliding receiving portions. When the arm body 7 pushes up the head support frame 6, the roll 52c of the sliding portion 52 comes into contact with the inner surface of the web portion 53c of the sliding receiving portion 53, and is inserted into the guide portion 53b of 53. Thereby, the sliding part 52 and the sliding receiving part 53 are engaged.

  Further, as shown in FIG. 4, the arm body 7 rotates around the raising / lowering main shaft 50, and the head support frame portion 6 pushed up by the other arm body 7 is connected to the rear end portion of the back support frame portion 4. 45, the relative position between the tip of the arm body 7 and the head support frame portion 6 facing the arm body 7 is moved by the change in the rising angle, but the roll 52c of the sliding portion 52 is moved to the sliding receiving portion. Since the roller 53 rolls while supporting the web portion 53c, the rising angle can be changed smoothly.

  Next, the operation of the bed 1 of this embodiment configured as described above will be described. When the rod 8b of the driver 8 protrudes, as shown by a solid line in FIG. 4, the raising / lowering lever 51 and the arm body 7 rotate clockwise in the drawing, and the back support frame portion 4 and the head support frame portion 6 are rotated. Are formed in an extended state S that is horizontally aligned on the first bed frame half 13A. At this time, as shown by a solid line in FIG. 8, the bed 1 is such that all the bedding receiving frames 2 including the heel support frame portion 15 and the leg support frame portion 16 are horizontally supported and a pillow is used. The standard sleeping style assumed is obtained.

  As the rod 8b of the driver 8 is reduced, the arm body 7 rotates counterclockwise in the drawing. When the sliding portion 52 of the rotating arm body 7 pushes up the sliding receiving portion 53, the head support frame portion 6 is lifted while the slide shaft 12 moves up in the guide hole 11 of the guide portion 9, and simultaneously guides. The head 9 is tilted about the horizontal axis 48b, and the head reclining state R is formed in which the head support frame 6 is tilted forward. When such a back support frame 4 is maintained in a horizontal posture and the head reclining state R is formed, a pillow is not used in a posture in which only the head is lifted, as shown by a one-dot chain line in FIG. The initial tilted state F1 obtained in (1) is formed.

  When the arm body 7 rotates counterclockwise in the drawing, as shown in FIG. 5B, the retaining portion 12b of the slide shaft 12 contacts the lower end surface of the cylindrical body 9A. When the arm body 7 further rotates beyond the maximum slide amount, the head support frame portion 6 pushed up by the arm body 7 lifts the back support frame portion 4 via the tilting portion 5. At this time, the back support frame portion 4 and the head support frame portion 6 are raised around the pin P1 of the connecting bracket 45 at the rear end portion of the back support frame portion 4 while maintaining the head reclining state R by the tilting portion 5. . At this time, as shown by a two-dot chain line in FIG. 8, the bed 1 is formed with a late tilting state F <b> 2 in which the upper body is lifted while the head reclining state R is maintained. And while the upper body is supported at an arbitrary angle, the head is supported in a state in which the burden on the neck raised relative to the back support frame is greatly reduced (head reclining state R). Even if this posture is maintained for a long time, such as watching and reading, it is possible to obtain a reclining state that does not cause symptoms such as fatigue and stiff shoulders and that can be comfortably relaxed.

  As shown in FIG. 4, the back support frame 4 in the late tilt state F2 can be adjusted to an arbitrary tilt angle by changing the length of the rod 8b by the rotation of the electric motor. Contrary to the above operation, by extending the rod 8b of the driver 8 and further rotating the arm body 7 in the clockwise direction, the tilt of the back support frame 4 is maintained while maintaining the head reclining state R. It can be reduced to the final extended state S.

  The slide shaft 12 of the tilting part 5 can also be configured to be pushed up directly by abutting the lower end of the slide shaft 12 against the rotating arm body 7.

  In this embodiment, in the bedding receiving frame 2, a plane including the underlaying material 4B, 6B, 15B, or 16B of the respective parts forms the bedding placement surface m. A mattress or the like may be simply placed on the bedding placement surface m, but preferably, as shown partially in FIG. 8, sponges and chips are placed on the respective underlaying material (16A in this example). It is preferable that the bedding B made of urethane foam or other cushion material is fixed and further covered with the sheet-like covering cover C together with the frame body 16A to be integrated with the bedding B.

  Figures 9 to 11 illustrate other embodiments. Hereinafter, only different contents will be described, and other than that, only the same reference numerals are given to equivalent components appearing in the drawings, and description thereof is omitted.

  In this embodiment, the sliding portion 52 provided at the distal end of the arm body 7 is spaced apart from the leg portion 52d, the sliding outer plate 52e formed at the leading end of the leg portion 52d, and the sliding outer plate 52e. An example is shown that includes a sliding inner plate 52f that is arranged in parallel and spaced apart and fixed to the sliding outer plate 52e via a fixing tool 55. The leg 52d is fitted to the tip of the arm body 7 and fixed by a fixing tool 54 (bolt nut).

  The sliding receiving portion 53 of this embodiment has a groove shape with an inner flange portion 53d in which the tips of the flange portions are bent inward, and is fixed to the lower surface of the reinforcing material 6C of the head support frame portion 6 by welding or the like. The sliding inner plate 52f of the sliding portion 52 is movably inserted into the sliding receiving portion 53, so that the arm body 7 supports the head support frame portion 6 movably at the tip thereof. Yes. Thus, in this embodiment, since the sliding inner plate 52f of the sliding portion 52 is inserted into the groove receiving portion 53 having the inner flange portion 53d and having a groove shape, the distal end portion of the arm body 7 is inserted. This is preferable in that the head support frame 6 can be stably supported. The sliding outer plate 52e further stabilizes the support by holding the inner flange 53d movably between the sliding inner plate 52f.

  12 and 13 illustrate yet another embodiment. The tilting part 5 of this embodiment is formed by a curved link-like hinge tool 56. The hinge tool 56 is pivotally supported at a pivot point P3 by a fitting 59 fixed to an outer frame part 4A1 whose rear end extends in the bed width direction at the front end of the frame body 4A of the back support frame part 4, and The front end portion is pivotally supported by a mounting bracket 60 fixed to the outer frame portion 6A1 extending in the bed width direction at the rear end portion of the frame body 6A of the head support frame portion 6, and a pair is arranged in the bed width direction. Thereby, the front end part of the back support frame part 4 and the rear end part of the head support frame part 6 are connected via the hinge tool 56 so that relative movement is possible.

  Moreover, the said hinge tool 56 is protrudingly provided with the prevention convex part 57 near the pivot P3. Then, when the hinge tool 56 pivots counterclockwise on the drawing centering on the pivot point P3, if the blocking convex part 57 comes into contact with the outer frame part 4A1 of the back support frame part 4, it is further pivoted. This prevents the relative movement range.

  The arm body 7 of this embodiment is formed by using a vertically long elliptical pipe, the base portion thereof is fixed to the raising and lowering main shaft 50, and a pair of them are arranged in the width direction of the bed inside the pair of hinge members 56, 56. . The arm body 7 is curved toward the lower surface of the head support frame portion 6 on the distal end side, and includes a sliding portion 52 at the distal end portion. As shown in FIGS. 12 and 14, the sliding portion 52 has a substantially square bar shape extending in the front-rear direction of the bed on the lower surface of the head support frame portion 6. In this embodiment, the sliding portion 52 is formed using an extrusion molding material, and Convex portions 52g projecting in a curved shape on both sides. The sliding portion 52 is fitted and fixed to a grooved steel receiving portion 52 h provided at the distal end portion of the arm body 7.

  A sliding receiving portion 53 having a U-shaped cross section facing the tip of the arm body 7 is fixed to the lower surface of the reinforcing member 6 </ b> C of the head support frame portion 6 by a fixing tool 61. The slide receiving portion 53 has a concave portion 53i that is recessed in a curved shape on the inner side surface, and is formed by using an extrusion molding material that is longer than the slide portion 52 in this embodiment. And as shown in FIG. 14, the convex part 52g of the sliding part 52 inserted in the sliding receiving part 53 is inserted in the recessed part 53i of the sliding receiving part 53, and it engages, and a sliding part 52 is movably connected to the sliding receiving portion 53. Further, when the arm body 7 is raised, the sliding receiving portion 53 is pushed up on the upper surface of the sliding portion 52, whereby the head support frame portion 6 is lifted.

  As shown in FIG. 12, an arm guide 62 is formed at a position facing the pair of arm bodies 7 at the front end of the back support frame 4. As shown in FIGS. 15 and 16, the arm guide 62 includes a main body 62 a and a mounting piece 62 b that expands in a bowl shape at the top of the main body 62 a, and the main body 62 a is a cross section facing the arm body 7. A U-shaped receiving groove 62c is provided. The arm guides 62 are arranged in a pair in the width direction of the bed, and the mounting pieces 62b are fixed to the outer frame portion 4A1 of the back support frame portion 4.

  When the arm body 7 is raised by the rotation of the tilting main shaft 50, the sliding portion 52 at the tip of the arm body 7 is slidably received by the head support frame portion 6 as shown by a one-dot chain line in FIG. The portion 53 is pushed up, whereby the hinge device 56 rotates counterclockwise around the pivot P3 and the head support frame portion 6 is lifted. As a result, there is a step between the back support frame portion 4 and the back support frame portion 4. It changes to a certain head reclining state R, and at this time, an initial tilt state F1 is formed.

  Further, as shown in FIG. 16, the arm body 7 that has risen is inserted into the receiving groove portion 62 c of the arm guide 62 provided in the back support frame portion 4, as shown in FIG. . When the arm body 7 further rises, the back support frame 4 is pushed up via the arm guide 62, and the front end of the back support frame 4 rises around the pin P1. Accordingly, the head support frame portion 6 and the back support frame portion 4 are raised while maintaining the head reclining state R, and a late tilt state F2 is formed. As described above, the arm body 7 of this embodiment is preferable in that the back support frame portion 4 is smoothly tilted because the back support frame portion 4 is directly pushed up via the arm guide 62. Moreover, since the arm body 7 is inserted into the receiving groove 62 c of the arm guide 62 and pushes up the back support frame 4, it is preferable in that the support of the back support frame 4 is stable.

  The arm guide 62 of this embodiment is formed of a plastic such as polyethylene, polypropylene, or polystyrene. Since the arm body 7 and the back support frame portion 4 are different in the pivot support shaft position, the position of the arm body 7 engaged with the arm guide 62 is displaced with a change in inclination. However, since the arm guide 62 made of plastic has a small friction coefficient, it is preferable in that the tilting operation of the back support frame portion 4 is smooth without causing rattling and vibration.

  In addition, although the bed of the said embodiment is a folding type, it is good also as a non-folding type bed. The present invention is not limited to the above-described embodiment, and can be implemented in various forms.

It is a disassembled perspective view of the bed 1 of this invention. FIG. It is a fragmentary perspective view which illustrates a tilting part and an arm body. It is a schematic side view showing the operating state of the bedding receiving frame. (A) (B) is sectional drawing which shows the operation state from which a tilting part differs. It is a partial side view which shows the engagement state of an arm body front-end | tip part and a head support frame part. It is the front view. It is a side view which shows the use condition of the bed 1 of this invention. It is side surface schematic drawing which illustrates other embodiment of this invention and shows the operation state of a bedding receiving frame. It is a partial side view which shows the engagement state of an arm body front-end | tip part and a head support frame part. It is the front view. FIG. 6 is a perspective view showing still another embodiment of the present invention and showing a bedding receiving frame and an arm body. It is the side surface schematic diagram which shows the operation state. It is the principal part sectional drawing. It is a front view which shows the state which an arm body supports a back support frame part. It is the side view. It is a side view of the conventional bed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bed 2 Bedding receiving frame 3 Bed frame body 4 Back support frame part 5 Tilt part 6 Head support frame part 7 Arm body 8 Driver 9 Guide part 10 Slide part 11 Guide hole 12 Slide shaft 13 Bed frame half body m Bedding placement Surface R1 Head reclining state R2 Upper body reclining state S Extension state

Claims (5)

A bed comprising a bedding receiving frame having a bedding placement surface for placing bedding and a bed frame body supporting the bedding receiving frame,
The bedding receiving frame includes an upper body support frame portion that receives an upper body of a sleeping person,
The upper body support frame part is a back support frame part that can be tilted by receiving the back of the sleeping person and pivoting the rear end part that becomes the leg part of the sleeping person,
A head support frame provided at the front end portion on the head side of the sleeping person and receiving the sleeping person's head;
A tilting part that connects between the back support frame part and the head support frame part,
The bed frame includes a raising / lowering means for lifting the head support frame,
The tilting portion is an extended state in which the back support frame portion and the head support frame portion are in a straight line, and
Between the head reclining state in which the head support frame portion lifted by the tilting means has a step in a direction perpendicular to the back support frame portion and tilts with the front end portion of the head support frame portion facing upward. A bed characterized by being connected to be tiltable .
The tilting portion is provided at a front end portion of the back support frame portion so as to be tiltable in a vertical plane including a bed length direction and has a guide hole extending vertically.
A slide portion having a slide shaft that hangs down from the rear end portion of the head support frame portion and is slidably inserted into the guide hole ,
The head support portion is lifted independently of the back support frame portion by sliding the slide shaft upward in the guide hole, and the front end portion of the head support frame portion is tilted by the guide portion. The bed according to claim 1, wherein the bed is tilted to the reclining state of the head tilted upward .
The slide shaft is formed with a retaining portion that is retained from the guide hole when sliding upward from the head reclining state.
The bed according to claim 2, wherein the back support frame portion is lifted together with the head support portion while maintaining the head reclining state via the slide portion and the guide portion by the retaining portion .
  The bed according to any one of claims 1 to 3, wherein the head support frame portion is inclined at an angle of 2 to 10 degrees with respect to the back support frame portion in a head reclining state.   The bed according to any one of claims 1 to 4, wherein the bed frame comprises a pair of bed frame halves that can be bent into an inverted V shape.

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