JP2014100183A - Folding bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a folding bed capable of performing reclining without giving an oppressive feeling to a user by allowing the upper half body of the user to sit up with the lower back region as a bending point.SOLUTION: A folding bed 1 to be deformable between a horizontal state and a bending state in a side view of the bed includes a bed part 2 having an upper half body side bed part 3 where an upper half body side is mainly placed and a lower half body side bed part 4 where a lower half body side is mainly placed. The upper half body side bed part 3 includes upper half body side inclination parts 20 that are inclined around a horizontal first pivot 21 set in a bed width direction by using the drive force of first drive means 22 and allows the upper half body of a user to sit up by upward inclination. In a side view, the first pivot 21 is arranged at a position 110-200 mm from the center CL of a horizontal length L of the bed part 2.

Description

  The present invention relates to a reclining folding bed.

  Conventionally, a foldable folding bed a as shown in FIG. 10 has been proposed (for example, Patent Document 1 below). The folding bed a includes a bed part d including an upper body side bed part b on which the upper body side of the user is mainly placed and a lower body side bed part c on which the lower body side of the user is mainly placed. The folding bed a can be deformed into a bent state by folding the upper body side bed part b and the lower body side bed part c into an inverted V shape in a side view of the bed.

  The upper body side bed part b includes an upper body side tilting part f that tilts upward around a horizontal first axis e along the bed width direction. By lifting the upper body side tilting portion f, the upper body of the user can be raised obliquely (reclining state).

JP 2005-124651 A

  In the conventional folding bed a, the horizontal distance La from the center CL of the horizontal length L of the bed portion d to the first pivot e is set to about 230 mm, for example. In such a folding bed a, assuming a standard adult user, it does not coincide with one of the waist g, which is the bending position of the upper body side tilting part f. Therefore, as shown in FIG. 10, when the folding bed a is in the reclining state, the upper body of the user is bent with the head side as a fulcrum rather than the waist g. In addition, as the tilt angle θ of the upper body side tilting part f increases, there is a problem of giving a feeling of pressure to the user's abdomen and the like.

  The present invention has been devised in view of the above circumstances, and when the reclining state is set, the position of the tilting fulcrum of the upper body side bed part is fixed so that the upper body of the user is raised with the waist as a fulcrum. The main object is to provide a foldable bed that can be reclined without giving a feeling of pressure to the user's abdomen on the basis of limiting to the range.

  Among the present inventions, the invention described in claim 1 comprises a bed part mainly including an upper body side bed part on which the upper body side of the user is placed and a lower body side bed part on which the lower body side of the user is mainly placed. The bed is a foldable bed that can be transformed into a horizontal state in which the bed portion is substantially horizontal and a bent state in which the upper body side bed portion and the lower body side bed portion are bent in an inverted V shape. The upper body side bed portion tilts about the first horizontal axis along the bed width direction by using the driving force of the first driving means, and tilts upward so that the upper body of the user is inclined. It includes an upper body side tilting part that rises, and in the bed side view, the first pivot is provided at a position of 100 to 200 mm in the horizontal direction from the center of the horizontal length of the bed part.

  Further, the invention according to claim 2 is characterized in that the upper body side tilting part is inclined in the upward direction and the head side placing part in which the user's head is placed, and the head side placing part. 2. The folding bed according to claim 1, further comprising: a back side placement unit that is inclined upward after being delayed and a back side of the user is placed.

  According to a third aspect of the present invention, the bed portion is placed on a bed frame, and the first driving means is provided below the upper body side bed portion and on the bed frame in the horizontal state. An actuator having an extendable rod; and an oscillating lever that tilts about a horizontal axis parallel to the first pivot axis by extension and contraction of the rod, and one end of the oscillating lever is directly or indirectly The folding bed according to claim 1 or 2, wherein the head side placement section is pushed up from the lower side.

  According to a fourth aspect of the present invention, the head-side placement section and the back-side placement section are connected to each other so as to be tiltable via an intermediate link. , One end is connected to the other end of the tilting arm connected to the bed frame so as to be tiltable about a horizontal axis in the vicinity of the first pivot and parallel to the first pivot, and the one end of the swing lever is The folding bed according to claim 3, wherein the tilting arm is pushed up from below.

  The invention according to claim 5 is the folding bed according to claim 4, wherein a roller that rolls along the tilting arm is rotatably provided at the one end of the swing lever.

  According to a sixth aspect of the present invention, the intermediate link has an arc shape that protrudes toward the lower side of the bed in the side view of the bed, and the head-side placement portion and the back-side placement portion It is a folding bed of Claim 4 or 5 which has connected each back surface.

  The invention according to claim 7 is the folding bed according to any one of claims 4 to 6, wherein the one end of the swing lever and the tilting arm are not connected.

  The invention according to claim 8 is the folding bed according to any one of claims 3 to 7, wherein the actuator pushes up the upper body side tilting portion by extension of the rod.

  Further, in the invention according to claim 9, the lower body side bed part includes a thigh side placing part on which a user's thigh side is placed, and a calf side placing part on which the user's calf is placed. The thigh side placement section is provided so as to be tiltable around a second pivot provided on the upper body side bed section, and the second pivot is a horizontal axis along the bed width direction. The folding bed according to any one of claims 1 to 8, wherein a horizontal distance L2 between the first pivot point and the second pivot point is 200 to 400 mm.

  Further, in the invention described in claim 10, the calf side placement portion and the thigh side placement portion are connected to be tiltable about a horizontal third pivot extending in the bed width direction. The calf side placement section tilts around the third pivot using the driving force of the second drive means, and the thigh side placement section moves with the tilt of the calf side placement section. The folding bed according to claim 9, wherein the thigh of the user is lifted by tilting in the opposite direction to the calf side placement section around the second pivot and tilting upward.

  In the folding bed of the present invention, the upper body side bed portion tilts about the horizontal first axis along the bed width direction by using the driving force of the first driving means, and tilts upward so that the user's It includes an upper body side tilting part that raises the upper body diagonally, and in the side view of the bed, the first pivot is provided at a position of 100 to 200 mm in the horizontal direction from the center of the horizontal length of the bed part. And

  In such a folding bed of the present invention, on the premise of use by a standard adult user, the first pivot that is the tilting fulcrum of the upper body side tilting portion and the user's waist are substantially coincident. Therefore, when the bed is in the reclining state, the user is raised at the upper body side tilting portion with the waist as a fulcrum. Therefore, even if the tilt angle of the upper body side tilting portion is increased, the user's abdomen is not compressed.

It is a side view of the horizontal state of the folding bed of embodiment of this invention. It is a side view of the bending state of the folding bed of FIG. It is a disassembled perspective view of the folding bed of this embodiment. It is a top view which shows the bed frame of the folding bed of FIG. It is a top view of the bed part of a folding bed. It is a side view of the reclining folding bed. It is a partially cutaway perspective view of a folding bed in which an intermediate link is enlarged. It is a partially cutaway perspective view of the folding bed in which the first driving means is enlarged. It is a partially cutaway perspective view of the folding bed in which the second driving means is enlarged. It is a side view of the reclining state of the conventional folding bed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 are side views of a folding bed (hereinafter simply referred to as “bed”) 1 of the present embodiment. As shown in FIGS. 1 and 2, the bed 1 includes a bed including an upper body side bed part 3 on which the user's upper body side is mainly placed and a lower body side bed part 4 on which the user's lower body side is mainly placed. Part 2 is provided.

  As shown in FIG. 1, the bed 1 is provided with a pawl A on one end side B <b> 1 of the bed part 2. In general, the user generally uses the side of the couch 2 as the head. Therefore, the upper body side bed part 3 constitutes the side plate A side of the bed part 2, and the lower body side bed part 4 constitutes the other end B <b> 2 side of the bed part 2.

  As shown in FIG. 1 or FIG. 2, the bed 1 has a horizontal state in which the bed part 2 is substantially horizontal (FIG. 1), and the upper body side bed part 3 and the lower body side bed part 4 are folded in an inverted V shape. It can be deformed into a bent state (FIG. 2). Unless otherwise specified, the bed 1 is assumed to be in a horizontal state. Further, in this specification, for easy understanding, the longitudinal direction of the bed 1 is defined as X, the width direction of the bed 1 is defined as Y, and the height direction of the bed 1 is defined as Z.

  As shown in FIG. 1, in the side view of the bed 1, the horizontal length L of the bed portion 2 is, for example, about 1900 to 2000 mm in consideration of a standard Japanese adult male body height (about 170 cm tall). Is set to The horizontal length of the bed part 2 is the length in the longitudinal direction X of the bed surface that the user can lay down. In the present embodiment, the horizontal length in the longitudinal direction X of the upper body side bed part 3 and the horizontal length in the longitudinal direction X of the lower body side bed part 4 are formed to be equal.

  The bed part 2 is placed on the bed frame 5. The bed frame 5 includes an upper body side frame 6 on which the upper body side bed part 3 is placed and a lower body side frame 7 on which the lower body side bed part 4 is placed.

  3 is a perspective view of the bed frame 5, and FIG. 4 is a plan view thereof. As shown in FIGS. 3 and 4, the upper body side frame 6 includes, for example, a main frame 10 formed in a substantially U shape in plan view, and the other end B <b> 2 of the main frame 10 extending in the bed width direction Y. It is formed including a reinforcing member 11a for connecting both end portions on the side, and a pair of reinforcing members 11b and 11b extending in the bed longitudinal direction X and connecting the main frame 10 and the reinforcing member 11a.

  The upper body side frame 6 further has a reinforcing member 11c extending in the bed longitudinal direction X from the one end B1 side of the main frame 10. As shown in FIG. 3, the reinforcing member 11c is provided with a pivot 12a along the bed width direction Y. A leg member 12 is rotatably provided on the pivot 12a.

  As shown in FIG. 4, the lower body side frame 7 includes, for example, a main frame 15 formed in a substantially U shape in plan view, and both end portions on the one end B1 side of the main frame 15 extending in the bed width direction Y. And a pair of reinforcing members 16b, 16b extending in the bed longitudinal direction X and connecting the main frame 15 and the reinforcing member 16a. Further, as shown in FIG. 3, each reinforcing member 16 b of the lower body side frame 7 is provided with a pivot 17 a extending in the bed width direction Y. A leg member 17 is pivotally supported on the pivot shaft 17a so as to be tiltable.

  Each leg member 12 and each leg member 17 are composed of, for example, a leg frame having an inverted T shape and wheels attached to the lower part thereof. As shown in FIG. 1 or 2, according to the leg member 12 and the leg member 17 of the present embodiment, when the bed 1 is deformed between a horizontal state and a bent state, the wheel travels on the floor surface. At the same time, the leg frame tilts around the pivots 12a and 17a. Thereby, the deformation | transformation of the bed 1 is performed smoothly. Further, each leg member 12 is arranged on the outer side of each leg member 17 in the bed width direction. Therefore, when the bed 1 is deformed, the leg member 12 and the leg member 17 do not contact each other.

  As shown in FIGS. 1 to 4, the bed frame 5 further includes a connection frame 8 that is disposed between the upper body side frame 6 and the lower body side frame 7 and connects them.

  The connection frame 8 includes a pair of side plate portions 8a disposed on both sides in the bed width direction Y, a joint material 8b that connects between the side plate portions 8a, and a pair of leg members 9 that extend downward from the joint material 8b. Yes.

  One end B1 side of the side plate portion 8a is connected to the upper body side frame 6 so as to be rotatable by a pivot 6a. Similarly, the other end B2 side of the side plate portion 8a is connected to the lower body side frame 7 so as to be rotatable by a pivot 7a. Each leg member 9 extends in a bar shape, for example, and is provided with a non-slip at the tip. The movement of the bed 1 is restricted by the leg member 9 in the horizontal state. Further, the bed 1 is deformed from a horizontal state to a bent state by the connection frame 8 being lifted up.

  In the bed frame 5 of the present embodiment, for example, tension springs (not shown) are provided between the connection frame 8 and the upper body side frame 6 and between the connection frame 8 and the lower body side frame 7, respectively. Good. By providing the tension spring, the operation force when the bed 1 is brought into the bent state is reduced. Further, the bed frame 5 of the present embodiment may be automatically deformable into a bent state or a horizontal state by using, for example, an electric motor.

  The upper body side bed part 3 includes a rigid frame part 3A that receives the load of the user and a cushion material 3B such as urethane foam disposed on the upper surface thereof. Similarly, the lower body side bed portion 4 includes a rigid frame portion 4A and a cushion material 4B such as urethane foam disposed on the upper surface thereof. Each bed part 3, 4 is covered with, for example, a cover material (not shown).

  FIG. 5 shows the rigid frame portion 3A and the rigid frame portion 4A in a plan view, and FIG. 6 shows the bed 1 in a reclining state in a side view of the bed. As shown in FIG. 5, the upper body side bed part 3 includes an upper body side tilting part 20 that tilts around a horizontal first pivot axis 21 along the bed width direction Y. As shown in FIG. 6, the first pivot 21 is provided on the bed frame 5, for example. The first pivot shaft 21 of this embodiment is pivotally supported by a support piece 13 fixed to the reinforcing material 11 a of the upper body side frame 6.

  In the present invention, the first pivot 21 is provided at a position where the horizontal first distance L1 from the center CL of the horizontal length L of the bed 2 to the first pivot 21 is 100 to 200 mm in the bed side view. It has been. That is, the first pivot 21 is provided closer to the center side in the longitudinal direction X of the bed part 2 than in the prior art. In the case where the first distance L1 is less than 100 mm, for example, when the upper body is raised with the heel portion on the lower body side of the user's waist g as a fulcrum, and the tilt angle of the upper body tilting portion 20 increases, the bed longitudinal direction X There is a possibility that the other end B2 of the lens is displaced. On the contrary, when the first distance L1 is larger than 200 mm, for example, the user raises his / her upper body with the head side as a fulcrum from the user's waist g, and the abdominal part increases as the tilt angle of the upper body side tilting part 20 increases. There is a risk of feeling a sense of pressure. From such a viewpoint, the first distance L1 of the present embodiment is preferably 100 to 170 mm, more preferably 100 to 150 mm, and still more preferably 100 to 140 mm.

  When such a bed 1 is assumed to be used by a standard adult user, the first pivot 21 that is the tilting fulcrum of the upper body side tilting portion 20 and the position of the user's waist g are substantially the same. . Therefore, when the bed 1 is in the reclining state, the user is raised by the upper body side tilting portion 20 with the waist g as a fulcrum. Therefore, even if the tilt angle of the upper body side tilting portion 20 is increased, the user's abdomen is not compressed. The upward inclination angle of the upper body side tilting portion 20 with respect to the horizontal direction is preferably set to be greater than 0 degree and 75 ° or less.

  The upper body side tilting part 20 preferably includes a head side placing part 23 where the user's head is placed and a back side placing part 24 where the user's back is placed.

  As shown in FIG. 5 or FIG. 6, the head-side placement unit 23 has, for example, a frame body 23 a coupled in a horizontally long rectangular shape, and a substantially S-shape suspended in the width direction Y of the frame body 23 a. The support member 23b and a cushion member 23c such as urethane foam disposed on the upper portion thereof are included. The head-side placement unit 23 preferably has a length of, for example, 190 to 240 mm in the bed longitudinal direction X so that it can function as a pillow for placing the user's head.

  The back-side mounting portion 24 includes, for example, a main frame 24a formed in a substantially U shape, a reinforcing member 24b extending in the bed width direction Y and joining both end portions on the other end B2 side of the main frame 24a, and a main frame A substantially S-shaped support member 24c suspended in the width direction Y of 24a and a cushion member 24d such as urethane foam disposed on the upper portion thereof are included. Both end portions on the other end B 2 side of the main frame 24 a of the back side placement portion 24 are connected to the bed frame 5 so as to be tiltable by the first pivot 21.

  The head-side placement unit 23 and the back-side placement unit 24 are connected via an intermediate link 25 so as to be tiltable.

  FIG. 7 shows an enlarged perspective view of the intermediate link 25. As shown in FIG. 7, one end of the intermediate link 25 is pivotally supported on the other end B <b> 2 side of the frame body 23 a of the head-side placement unit 23, and the other end of the main frame 24 a of the back-side placement unit 24. One end is pivotally supported on the B1 side. Further, the intermediate link 25 is connected to the back sides of the head-side placement unit 23 and the back-side placement unit 24. The intermediate link 25 is formed, for example, in an arc shape that protrudes downward on the bed side in a side view of the bed.

  Furthermore, the upper body side tilting portion 20 is tilted using, for example, the driving force of the first driving means 22 supported by the upper body side frame 6. The first driving means 22 is operated by a user on the bed 1 with, for example, a remote controller.

  6 and 8 show the first driving means 22. The first drive means 22 includes an actuator 30 and a swing lever 31 that tilts around a horizontal axis 31 a along the bed width direction Y by driving the actuator 30.

  The actuator 30 is pivotally supported via an attachment member 29 below the upper body side bed section 3 and on the bed frame 5, for example. The actuator 30 includes an electric motor 30b and a rod 30a that can be expanded and contracted by driving the electric motor 30b. The rod 30a is pivotally supported by a rod pivot lever 33 fixed to the horizontal shaft 31a.

  One end of the swing lever 31 is fixed to the horizontal shaft 31a, and the other end can push up the head-side placement unit 23 directly or indirectly from below.

  Such first driving means 22 rotates the horizontal shaft 31a clockwise in FIG. 6 by the extension of the rod 30a of the actuator 30. As a result, the swing lever 31 rises and the upper body side tilting portion 20 can be pushed up. At this time, only the head-side placement section 23 is tilted upward in advance. In this state, since only the head mounting frame 23 is lifted, the user can use the head mounting frame 23 like a pillow. Next, when the rod 30a of the actuator 30 is further extended, the tilt angle of the head mounting portion 23 is further increased. As a result, the intermediate link 25 pulls up the back-side placement unit 24, and the back-side placement unit 24 tilts upward behind the head-side placement unit 23.

  The head placement unit 23 may be directly pushed up by the swing lever 31, for example. In this case, one end of the swing lever 31 is directly connected to the head-side mounting portion 23.

  In the present embodiment, a configuration is shown in which the swing lever 31 indirectly pushes up the head mounting portion 23. In this aspect, the first drive means 22 further includes a tilting arm 32 having one end connected to the bed frame 5 and the other end connected to the head-side mounting portion 23.

  As shown in FIG. 8, for example, the tilting arm 32 is fixed to a horizontal shaft 32 a pivoted between the reinforcing members 11 b and 11 b of the upper body side frame 6 at one end. Thereby, the tilting arm can tilt around the horizontal axis 32a along the bed width direction Y. The horizontal shaft 32 a is pivotally supported in the vicinity of the first pivot 21 and in parallel with the first pivot 21.

  At the other end of the tilt arm 32, for example, a slide portion 32b is formed. The slide portion 32 b is slidably inserted into a slide rail 23 c provided on the frame body 23 a of the head-side mounting portion 23.

  The swing lever 31 is provided at one end with, for example, a roller 31b rotatable along the tilt arm 32, and is configured to push up the tilt arm 32 from below through the roller 31b.

  According to the configuration of the swing lever 31 and the tilt arm 32 as described above, even if the distance between the horizontal shaft 31a of the swing lever 31 and the horizontal shaft 32a of the tilt arm 32 is large, the upper body tilting portion 20 is tilted greatly. Can tilt to an angle. One end of the swing lever 31 is provided with a roller 31b, and one end of the swing lever 31 and the tilt arm 32 are not connected. For this reason, when tilting the upper body side tilting part 20 downward, for example, even if there is a person or an object below the upper body side tilting part 20, the upper body side tilting part 20 and the actuator 30 are separated, and the actuator 30 Only the rod 30a is reduced. That is, the upper body side tilting part 20 is lowered only by its own weight, not the power of the actuator 30, so that an accident in which a person or an object is caught by the upper body side tilting part 20 is prevented.

  As shown in FIG. 5, the lower body side bed unit 4 includes a thigh side placement unit 35 on which the user's thigh side is placed, and a calf side placement unit 36 on which the user's calf side is placed. Is included.

  The thigh side placement part 35 and the calf side placement part 36 are, for example, substantially S-shaped frames 35a, 36a joined in a horizontally long rectangular shape and suspended in the bed width direction Y of each frame 35a, 36a. Support members 35b and 36b, and a cushioning material 36c such as urethane foam disposed on the upper surface thereof.

  The support surface of the thigh side placement portion 35 has a length in the front-rear direction X suitable for placing the user's thigh, and is formed to be 230 to 280 mm, for example. In addition, the support surface of the calf side placement part 36 has a length in the front-rear direction X suitable for placing the calf of the user, and is formed to be 530 to 580 mm, for example.

  The thigh side placement section 35 is provided so as to be tiltable around the second pivot 37 provided on the one end B1 side. The second pivot shaft 37 is a horizontal shaft along the bed width direction Y, and is pivotally supported at the rear end portion of the base portion 38 fixed to the reinforcing member 16a of the lower body side frame 7, for example.

  The thigh side placement unit 35 and the calf side placement unit 36 are coupled to be tiltable around a horizontal third pivot 39 extending in the bed width direction Y, for example. As shown in FIG. 6, the calf side placement section 36 tilts around the third pivot 39 using the driving force of the second driving means 40 in the bed side view. At this time, the thigh-side placement unit 35 can tilt in the direction opposite to the calf-side placement unit 36 around the second pivot 37 as the calf-side placement unit 36 tilts.

  The calf side mounting part 36 is driven by, for example, the second driving means 40. The table 2 driving means 40 is arranged on the lower body side frame 7. FIG. 9 shows a perspective view of the bed 1 in which the second driving means 40 is enlarged.

  As shown in FIG. 9, the second driving means 40 of the present embodiment includes, for example, an actuator 41 including an extendable rod 41 a provided below the lower body side bed part 4 and on the bed frame 5. Yes.

  For example, the actuator 41 is pivotally supported by an attachment member 42 disposed between the reinforcing members 16b and 16b of the lower body side frame 7 via the reinforcing member. The actuator 41 includes an electric motor 41b and a rod 41a that can be expanded and contracted by driving the electric motor 41b. The rod 41 a is pivotally supported by a reinforcing member 36 c provided on the frame body 36 a of the calf side mounting portion 36.

  As shown in FIG. 6, in the lower body side bed part 4 of the present embodiment, when the calf side placing part 36 is pushed up by the second driving means 40, the thigh side placing part 35 via the third pivot 39. Is tilted upward around the second pivot 38, and the calf side mounting portion 36 is tilted downward around the third pivot. Therefore, the user's lower body is lifted along the lower body side bed part 4.

  Such a bed 1 can lift the user's thigh by using the thigh side placement unit 35 with the position near the waist g as a fulcrum. That is, the user's thigh can be lifted in a state where the thigh bending position and the thigh-side placement portion 35 are in a similar state. Therefore, even if the tilt angle of the thigh side placement part 35 is increased, the user's thigh can be lifted without giving a feeling of pressure to the user's abdomen or the like. In a particularly preferred embodiment, the second distance L2 from the first pivot axis 21 to the second pivot axis 37 is 200 to 400 mm in the bed side view.

  In the bed 1 of the present embodiment, the second distance L2 from the first pivot 21 to the second pivot 37 is set to be smaller than that of the conventional bed. For this reason, for example, even when the upper body side tilting section 20 and the thigh side placement section 35 tilt simultaneously and the user's upper body is raised and the thigh is lifted, It can be reclined without giving a feeling of pressure and the user's thigh can be lifted.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

DESCRIPTION OF SYMBOLS 1 Folding bed 2 Bed part 3 Upper body side bed part 4 Lower body side bed part 5 Bed frame 20 Upper body side tilting part 21 1st pivot 22 First drive means 23 Head side mounting part 24 Back side mounting part 25 Intermediate link 30 Actuator 31 Oscillating lever 32 Tilt arm 35 Thigh side placement part 36 Sheath side placement part 37 Second pivot 39 Third pivot 40 Second drive means X Bed longitudinal direction Y Bed width direction

Claims (10)

A bed part including an upper body side bed part mainly placed on the upper body side of the user and a lower body side bed part mainly placed on the lower body side of the user;
The bed is a foldable bed that can be transformed into a horizontal state in which the bed portion is substantially horizontal and a bent state in which the upper body side bed portion and the lower body side bed portion are bent in an inverted V shape. ,
The upper body-side bed portion tilts about the first horizontal axis along the bed width direction by using the driving force of the first driving means, and tilts upward to raise the upper body of the user diagonally. Including the upper body tilting part,
In the bed side view, the first pivot is provided at a position of 100 to 200 mm in the horizontal direction from the center of the horizontal length of the bed part.   The upper body side tilting part is tilted upward in advance and the head side placing part on which the user's head is placed, and tilted upward after being delayed from the head side placing part and the user. The folding bed according to claim 1, further comprising: a back side placement unit on which the back of the bed is placed. The bed part is placed on a bed frame,
In the horizontal state, the first drive means includes an actuator including an extendable rod provided below the upper body side bed part and on the bed frame;
A rocking lever that tilts about a horizontal axis parallel to the first pivot by expansion and contraction of the rod;
The folding bed according to claim 1 or 2, wherein one end of the swing lever pushes up the head-side placement unit from below directly or indirectly. The head-side placement section and the back-side placement section are connected so as to be tiltable via an intermediate link,
One end of the tilting arm connected to the bed frame is connected to the bed frame so as to be tiltable about a horizontal axis in the vicinity of the first pivot and parallel to the first pivot. ,
The folding bed according to claim 3, wherein the one end of the swing lever pushes up the tilting arm from below.   The folding bed according to claim 4, wherein a roller that rolls along the tilting arm is rotatably provided at the one end of the swing lever.   5. The intermediate link has an arc shape that protrudes downward on the bed in the side view of the bed, and connects the back surfaces of the head-side placement section and the back-side placement section. Or the folding bed of 5.   The folding bed according to any one of claims 4 to 6, wherein the one end of the swing lever and the tilt arm are not connected.   The folding bed according to any one of claims 3 to 7, wherein the actuator pushes up the upper body side tilting portion by extension of the rod. The lower body side bed part includes a thigh side placement part on which the user's thigh side is placed, and a calf side placement part on which the user's calf is placed,
The thigh side placement section is provided so as to be tiltable around a second pivot provided on the upper body side bed section side,
The second pivot is a horizontal axis along the bed width direction;
The folding bed according to any one of claims 1 to 8, wherein a horizontal distance L2 between the first pivot point and the second pivot point is 200 to 400 mm. The calf side placement section and the thigh side placement section are connected to be tiltable about a horizontal third pivot extending in the bed width direction,
In the side view of the bed, the calf side placement section tilts around the third pivot using the driving force of the second driving means,
The thigh side placement section is tilted in the direction opposite to the calf side placement section around the second pivot axis and tilted upward as the calf side placement section tilts, The folding bed according to claim 9, wherein the thigh is lifted.

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