JP2008073107A - Bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bed suppressed in vibration or noise when being raised/lowered, and having a simplified structure for handleability including maintenance. <P>SOLUTION: A bed frame body includes a driving device including a front arm body having the front end part making a slide contact with the lower surface of an upper half body-supporting frame portion and raising the upper half body-supporting frame portion with upward turning, a rear arm body having the front end making a slide contact with the lower surface of a leg-supporting frame portion and raising the leg-supporting frame portion with upward turning, a front linear motion device for turning the front arm body, and a rear linear motion device for turning the rear arm body. The front and back linear motion devices turn the front and rear arm bodies upward by pressing motion of a rod, and the front and rear linear motion devices have rods disposed so as to be parallel and reversed to each other in the width direction of the bed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a bed in which each of an upper body support frame portion and a leg support frame portion is formed to be liftable.

  In recent life habits, it is often performed to watch TV or read while lying down on a bed, and to have a light meal. In view of such a usage situation, as shown in FIG. 9, the present applicant configures the upper body support part a that receives the upper body so that it can be reclined, and maintains the lower body including joints such as knees and waists in an easy posture. In order to do this, a bed that can be used more comfortably has been proposed by configuring the leg support part b that receives the leg part to be movable up and down (see, for example, Patent Document 1).

Utility Model Registration No. 3124016

  As shown in FIG. 10, the upper body support part a of the bed is rotated upward by the pulling operation of the rod of the first linear motion unit d provided at the lower part of the upper body support part a, while the other leg support part b is shown in FIG. 11, the second linear motion device e provided at the lower portion of the leg support portion b is configured to be lifted by a pulling operation. As described above, the first and second linear motion devices d and e are mounted apart from the front and back of the bed, so that mechanical vibration and noise at the time of lifting and lowering are generated in the front and rear, so that they are particularly quiet. At night, the sound environment and feeling of use may be impaired. In addition, since the first and second linear motion units d and e are dispersed back and forth, the structure including the control and electric system tends to be complicated, and further improvement has been demanded.

  According to the present invention, the front linear motion device and the rear linear motion device included in the driving device rotate the front and rear arm bodies upward by pushing the rod, and the front linear motion device and the rear linear motion device Basically, the exerciser is arranged in parallel with the bed width direction and parallel to the rod, and the rod and the reverse direction are arranged. The issue is to provide a bed with excellent properties.

  In order to achieve the 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 is disposed on a front side portion where the head of the sleeping person faces, and an upper body support frame portion whose rear end portion is pivotally supported by the bed frame body and receives the upper body, and is disposed on the rear portion. And a leg support frame that is pivotally supported by the bed frame and receives a leg of a sleeping person, and the bed frame is slidably in contact with the lower surface of the upper body support frame and facing upward The arm body before lifting the upper body support frame portion with rotation, the arm body with the tip portion sliding on the lower surface of the leg support frame portion and lifting the leg support frame portion with upward rotation, and the front Rotate the linear motion unit before rotating the arm body and the rear arm body. A driving device including a linear motion unit that is to be moved, and the front linear motion device and the rear linear motion device are configured to rotate the front and rear arm bodies upward by pushing the rod, and to perform the previous linear motion. The device and the subsequent linear motion device are characterized in that they are arranged side by side in the bed width direction and parallel to each other and the rods are arranged in the opposite direction.

  In the invention according to claim 2, the driving device includes a base shaft extending in the front-rear direction, a receiving portion that receives the base end portions of the front linear motion device and the rear linear motion device at both ends of the base shaft, the front and the rear, respectively. A front rotation shaft and a rear rotation shaft to which the base end portion of the arm body is fixed, and one end fixed to the front and rear rotation shafts and each other end to the front linear motion device 4. The invention according to claim 3, wherein the front and rear rotation shafts are the base shafts of the drive device. It is characterized by being pivotally supported by bearings at both ends.

  In the invention according to claim 4, the upper body support frame portion has a rear end portion pivotally supported by the bed frame body and a back support frame portion that receives a sleeping person's back, and is aligned with the back support frame portion. A head support attached to the front end portion of the back support frame portion via an inclined portion that changes into an extended state and a head reclining state that is lifted with respect to the back support frame portion and can tilt the front end upward. And a front end portion of the front arm body is in sliding contact with the lower surface of the head support frame portion to lift the upper body support frame portion.

  In the invention according to claim 5, the leg support frame portion includes a first leg support frame portion whose front end portion is pivotally supported by the bed frame body and receives a sleeping person's thigh, and a front end portion of the leg support frame portion. And a second leg support frame part that is foldably attached to a rear end part of the leg support frame part and receives a calf of a sleeping person, the rear end part of the second leg support frame part and the bed frame body Are connected to each other by a link having substantially the same length as the first leg support frame portion, and a parallel crank mechanism is formed by the link, the first leg support frame portion, the second leg support frame portion, and the bed frame body. In addition, the distal end portion of the rear arm body slides on the lower surface of the first leg support frame portion to lift the leg support frame portion.

  In the invention according to claim 1, the front linear motion unit and the rear linear motion unit are arranged in a compact manner with the rods arranged in parallel and parallel to the bed width direction, and the rods are reversed. The For this reason, noise and vibration sources are concentrated in one place when the rod is pushed out with a large output to lift the upper body support frame part and the leg support frame part on which the sleeping person and bedding are placed. Can be easily performed, and adverse effects on the sleeper can be minimized.

  In addition, since the front linear motion unit and the rear linear motion unit are arranged together as described above, the mounting structure and wiring can be simplified in a lump, so that failure is reduced and maintenance can be easily performed. Further, these members can be unitized to simplify handling. In the front and rear linear motion units, each rod is arranged in the opposite direction and the arm body is rotated upward by the pushing operation. Therefore, the upper body support frame part and the leg support frame part maintain the normal level. In the posture, since the rod is in a compact state, the rod does not get in the way when moving the bed or cleaning the floor surface under the bed.

  As in the invention according to claim 2, the drive device is configured to include a base shaft extending in the front-rear direction, and when the base end portions of the front and rear linear motion units are respectively attached by the receiving portions at both ends of the base shaft, The stress that is generated when the front and rear arm bodies are rotated by operating the linear motion unit is supported by the base shaft. As a result, a very large load is not generated on the bed frame, so that deformation such as bending does not occur.

  As in the invention according to claim 3, when the front and rear rotating shafts are pivotally supported by bearing portions provided at both ends of the base shaft of the driving device, the front and rear are moved by pushing the rods of the front and rear linear motion units. When the arm body is rotated, the load generated between the proximal end portion of the front and rear linear motion units and the distal end portion of the rod is supported by the base shaft, so that it is supported by the front and rear arm bodies and this. In addition, the upper body support frame portion and the leg support frame portion are lifted smoothly, and the bed does not deform or squeak. Moreover, since the bed frame body does not require any special reinforcement only by using a strong shaft that sufficiently supports these loads, the structure of the entire bed can be standardized.

  As in the invention according to claim 4, the upper body support frame portion is formed by a back support frame portion and a head support frame portion attached to a front end portion of the back support frame portion via a tilting portion, and the front arm When it is configured to lift the upper body support frame portion in sliding contact with the lower surface of the head support frame portion at the tip of the body, a head reclining state in which only the head support frame portion is lifted in the initial tilt state is formed, and there is no pillow You can get the same comfortable sleeping experience as using a pillow.

  Further, when the head support frame part that further rises as the front arm rotates further lifts the back support frame part via the tilting part, the back support frame part tilts upward while maintaining the head reclining state. Since the late tilt state is formed, the head can be lifted 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.

  As in the invention according to claim 5, the leg support frame portion is formed of a first leg support frame portion that receives the sleeper's thigh and a second leg support frame portion that receives the sleeper's calf. In addition, when the distal end portion of the rear arm body is configured to slide and come into contact with the lower surface of the first leg support frame portion to lift the leg support frame portion, the sleeping person can construct the first and second leg support frame portions. When the leg is placed on the head, the height can be gradually lowered from the bedside of the sleeping person toward the head. Therefore, the blood that has flowed through the soles of the feet easily returns to the heart, and a sufficient blood circulation promoting effect can be achieved. In addition, the second leg support frame portion is supported and lifted by the parallel crank mechanism formed by the first and second leg support frame portions, the link, and a part of the bed frame body, so that the structure is simple. In addition, the second leg support frame can be smoothly raised and lowered.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the bed 1 includes a bedding receiving frame 3 and a bed frame 4 that supports the bedding receiving frame 3. The bedding receiving frame 3 forms a bedding placement surface 2 on which the bedding is placed. In this embodiment, a bed mattress is used as the bedding, and the mattress is covered with a mat cover. However, in the case of a snowboard bed or the like, there is a case where a quilt is placed directly on the bedding placement surface 2 and used.

  As shown in FIG. 2, the bedding receiving frame 3 is arranged on the front part facing the head of the sleeping person, the upper body supporting frame part 5 for receiving the upper body of the sleeping person, and the lower part on the opposite side, The leg support frame part 6 that receives the bedridden leg and the heel support frame part 31 that is disposed between the leg support frame part 6 and connects the two to receive the bedridden buttock part are divided into three parts.

  Further, the upper body support frame portion 5 of this embodiment is attached to the back support frame portion 20 disposed on the rear side and receiving the sleeping person's back, and the front end portion of the back support frame portion 20 via the tilting portion 21. A head support frame portion 22 that receives a sleeping person's head is illustrated. The back support frame portion 20 and the head support frame portion 22 both extend in the front-rear direction and extend in the bed width direction by connecting the vertical frame members disposed on both sides in the bed width direction and the front and rear ends of the vertical frame member. Two reinforcing bars extending in the front-rear direction are formed on the inner side of a rectangular outer frame formed by a pair of front and rear horizontal frame members. The back support frame 20 and the head support frame 22 are formed in the same size in the bed width direction, and the back support frame 20 is formed longer than the head support frame 22 in the front-rear direction. ing. Further, as shown in FIG. 3, an engagement rail 56 extending in the front-rear direction is attached to the lower portion of the reinforcing bar of the head support frame portion 22.

  As shown in FIGS. 2 and 3, the tilting portion 21 has a curved rod shape, is spanned between a back support frame portion 20 and a head support frame portion 22 that are arranged at intervals, and in the bed width direction. A pair is spaced apart. And this tilting part 21 is pivotally attached to the horizontal frame material which the head support frame part 22 and the back support frame part 20 face, respectively. Since the front and rear end portions of the tilting portion 21 are pivotally attached to the head support frame portion 22 and the back support frame portion 20 as described above, as shown in FIG. An extended state in which the support frame 20 is in a straight line, and a head in which the head support frame 22 is lifted with respect to the back support frame as shown in FIGS. 7B and 7C and the front end can tilt upward. It is configured to be changeable between the reclining state.

  In addition, as shown in FIG. 2, the leg support frame portion 6 of the present embodiment includes a first leg support frame portion 23 that receives the sleeper's thigh and a second leg support frame portion 24 that receives the sleeper's calf. The thing comprised including is illustrated. The first and second leg support frame portions 23 and 24 are both extended in the front-rear direction and connected to a vertical frame member disposed on both sides in the bed width direction, and the front and rear ends of the vertical frame member are connected in the bed width direction. Two reinforcing bars extending in the front-rear direction are formed on the inner side of a rectangular outer frame formed by a pair of front and rear horizontal frame members. Further, the rear end portion of the vertical frame member of the first leg support frame portion 23 and the front end portion of the vertical frame member of the second leg support frame portion 24 are pivotally attached, whereby the first and second leg supports are supported. The frame parts 23 and 24 are connected so that bending is possible.

  Similarly, the heel support frame portion 31 is also arranged on the inner side of the outer frame framed by a vertical frame member arranged on both sides in the bed width direction and a pair of front and rear horizontal frame members connecting the front and rear end portions of the vertical frame member. It consists of two reinforcing bars. And the front and rear ends of the vertical frame member of the heel support frame portion 31 are respectively the rear end portion of the vertical frame member of the back support frame portion 20 and the front end portion of the heel frame member of the first leg support frame portion 23. Thus, the heel support frame portion 31 is connected to the back support frame portion 20 and the first leg support frame portion 23 so as to be able to be bent respectively.

  The bedding receiving frame 3 of the present embodiment configured as described above has a head support frame portion 22, a back support frame portion 20, a heel support frame portion 31, and a first leg support frame portion 23 that are formed in the same width from the front side. And the 2nd leg support frame part 24 is connected so that bending is possible.

  The bed frame body 4 is disposed below the bedding receiving frame 3 and supports a support base 32 that supports the entire bed 1, a base frame 33 provided between the support base 32 and the bedding receiving frame 3, and bedding And a drive device 11 for operating the receiving frame 3.

  As shown in FIGS. 1 and 2, the support base 32 includes a pair of long plate-like bottom plates 34, 34 arranged in parallel on both sides in the bed width direction, and a pair of connecting members 35, 35 connecting the bottom plates 34, 34. And a side wall 36 rising like a wall from substantially the center of the bottom plate 34. In addition, a pair of short column members 37 are incorporated in the side wall 36 as front and rear as a core material for supporting a load.

  The base frame 33 includes a pair of side frames 38 and 38 that are arranged facing both sides in the bed width direction, and a horizontal shaft 39 that extends between the pair of side frames 38 and 38 and extends in the bed width direction. And an intermediate frame 40.

  The side frame 38 has a long plate shape extending in the front-rear direction and a side plate 41 disposed on the outer side, and an inner frame 42 having a horizontal U-shape and integrally fixed to the inner side of the side plate 41. The A pair of side frames 38, 38 are arranged facing each other with the inner frame 42 disposed inside, and both end portions of the horizontal shaft 39 are fixed to the inner side surfaces of the side plates 41, 41. Further, the horizontal axis 39 intersects the inner frame 42, and both are fixed at the intersection. Inside the both end portions of the side plate 41, a vertical cylindrical body 43 is provided, and a bearing receiving hole 57 is formed in the rectangular cylindrical body 43.

  The intermediate frame 40 is formed by bridging a plurality of middle rails 40B facing the bed width direction inside a rectangular outer peripheral frame 40A that is long in the front and rear direction. Then, it is placed on the side frames 38, 38 connected via the horizontal shaft 39, and the outer frame 40A and the intermediate rail 40B are welded to the inner frame 42 and the horizontal shaft 39, so that the side frames 38, The base frame 33 is formed by integrating the shaft 39 and the intermediate frame 40. A base end portion of a pair of links 25 having substantially the same length as the longitudinal dimension of the first leg support frame portion 23 is pivotally attached to the rear end portion of the intermediate frame 40.

  The base frame 33 configured as described above is placed on the support base 32 and is fixed to the base frame 33 by bolting the inner frame 42 to the upper end of the short column member 37 of the side wall 36. The base 32 is integrated. Further, the bedding receiving frame 3 is placed on the base frame 33, and the heel support frame 31 is bolted to the outer peripheral frame 40A of the intermediate frame 40, whereby the support base 32, the base frame 33, and the bedding receiving unit are fixed. The frame 3 is integrated to form the structure of the bed 1. As a result, the rear end portion of the back support frame portion 20 constituting the rear region of the upper body support frame portion 5 is pivotally supported by the bed frame body 4 and the first region constituting the front region of the leg support frame portion 6. The front end portion of the leg support frame portion 23 is pivotally supported by the bed frame body 4.

  Further, as shown in FIG. 3, the distal end portion of the link 25 is pivotally attached to the rear end portion of the second leg support frame portion 24. As a result, as shown in FIGS. 8A to 8C, the link 25, the first leg support frame portion 23, the second leg support frame portion 24, and the intermediate frame 40 that constitutes the bed frame body 4. A parallel crank mechanism 26 is formed by the rear end region, and as a result, the first and second leg support frame portions 23 and 24 are configured to move up and down in conjunction with each other.

  As shown in FIGS. 2 and 3, the driving device 11 includes front and rear arm bodies 7 and 8 and front and rear linear motion units 9 and 10. Further, the drive device 11 of this embodiment is illustrated as including a base shaft 13 extending in the front-rear direction and front and rear rotating shafts 15 and 16 disposed at the front and rear end portions of the base shaft 13.

  The base shaft 13 constitutes a main frame of the driving device 11. In this embodiment, as shown in FIGS. 5 and 6, a steel square pipe is used. Further, a U-shaped groove receiving piece 44 extending in the bed width direction is fitted and fixed to a cutout portion formed by cutting out the upper portion of the base shaft 13 in the vicinity of the front and rear end portions. As shown in FIG. 4, a cover plate 46 is screwed to cover the upper portion of the groove receiving piece 44, and a protruding portion 47 directed downward is formed on the cover plate 46. Further, the groove receiving piece 44 is disposed so as to be displaced from the base shaft 13 to one side in the bed width direction, and the inverted U-shaped pivot is formed at the lower part of the region protruding from the base shaft 13 of the groove receiving piece 44 to one side. The support body 45 is fixed, and the receiving part 14 is formed by the pivot support body 45. Further, in the region of the groove receiving piece 44 that protrudes to one side from the base shaft 13, a flange 48 that is flush with the upper surface of the base shaft 13 is formed. The flange 48 is preferable in that the mounting strength of the cover plate 46 is stabilized because the cover plate 46 that is overlaid is screw-fixed.

  As shown in FIG. 4, a concave portion 49 with an upper portion cut out is formed in the approximate center of the base shaft 13 in the front-rear direction. The driving device 11 is attached to the bed frame 4 by fitting the horizontal shaft 39 of the base frame 33 into the recess 49 and fixing the base shaft 13 to the middle rail 40B of the intermediate frame 40 by bolts.

  As shown in FIGS. 5 and 6, the front and rear pivot shafts 15 and 16 are respectively accommodated in groove receiving pieces 44 attached to the front and rear of the base shaft 13. The lid 46 is closed. In addition, the outer diameters of the front and rear rotating shafts 15 and 16 are formed so as to be accommodated in the empty space surrounded by the groove receiving piece 44 and the protruding portion 47 without backlash. With this configuration, the bearing portion 19 is formed by the groove receiving piece 44 and the lid plate 46 provided with the protruding portion 47 at both ends of the base shaft 13. The front and rear rotating shafts 15 and 16 are pivotally supported by the bearing portion 19 at their substantially central portions. Further, both end portions of the front and rear rotating shafts 15 and 16 are pivotally supported by bearing receiving holes 57 formed in the side plate 41 of the side frame 38. Thus, the front and rear pivot shafts 15 and 16 are pivotally supported by the bearing portion 19 and the receiving hole 57 at substantially the center and both ends, so that they do not bend even when a large load is applied. It is preferable in that it can stably support the rotational movement.

  As shown in FIGS. 2 and 5, the front pivot shaft 15 includes a pair of front arm bodies 7 extending in parallel to each other at right angles to the axial center line on both sides in the bed width direction, and the base shaft 13. The drive piece 17 before extending at a right angle with respect to the axial center line is fixed integrally on the side portion. The front arm body 7 is provided with a long rectangular slide plate 50 whose base end portion is fixed to the front rotating shaft 15 and extends linearly, and is curved upward in the vicinity of the front end and extends in the front-rear direction at the front end. It is done. The slide plate 50 engages with the engagement rail 56 of the head support frame portion 22 so as to be movable back and forth. Further, the front drive piece 17 has a base end fixed to the front rotation shaft 15 and a pair of double-action plates 51, 51 arranged in parallel with a small distance in the bed width direction, and the tips of the double-action plates 51, 51. It includes a pivot pin 52 spanned between the parts.

  The rear pivot shaft 16 has a pair of rear arm bodies 8 that are perpendicular to the axial center line on both sides in the width direction of the bed and parallel to each other and extend rearward, and the axial center line at the side of the base shaft 13. The drive piece 18 extending at a right angle is fixed integrally. The rear arm body 8 has a proximal end fixed to the rear rotating shaft 16 and extends linearly, and has a small roll 53 at the tip. The small roll 53 is disposed at a position where the small roll 53 is in sliding contact with the lower surface of the reinforcing bar of the first leg support frame 23 and can be pushed up. The rear drive piece 18 is configured in substantially the same manner as the front drive piece 17, and has a base end fixed to the rear rotation shaft 16 and a pivot pin 52 between the distal ends of the pair of twin plates 51, 51. It is formed across.

  The front and rear linear motion units 9, 10 have a rod 12, and in this embodiment, have a main body portion 54 including a motor and a ball screw mechanism, and the rod 12 is moved to the main body portion 54 by forward and reverse rotation of the motor. An electric cylinder that can be expanded and contracted and can be pushed and pulled is exemplified. In addition, the linear motion units 9 and 10 before and after the present embodiment adopt an output whose specifications are, for example, 6000 N on the push side where the rod 12 extends and 4000 N on the pull side where the rod 12 retracts. The front and rear linear motion units 9, 10 are arranged parallel to each other in the bed width direction with the base shaft 13 interposed therebetween, and the rods 12 are disposed in the reverse direction of the front and rear. As shown in FIG. 6, the attachment piece 55 protruding from the base end portion of the main body portion 54 is pivotally supported by the pivot body 45 that constitutes the receiving portion 14. On the other hand, the tip of the rod 12 of the front linear motion unit 9 is pivotally supported by the pivot pin 52 of the front drive piece 17, and the tip of the rod 12 of the rear linear motion unit 10 is pivoted by the rear drive piece 18. It is pivotally supported by the pin 52.

  Since the front and rear linear motion units 9 and 10 are arranged together in this way, the mounting structure and electrical wiring that support them can be simplified in a lump, so that failures are reduced and maintenance is reduced. It can be done easily. Furthermore, the members including the front and rear linear motion units 9, 10 can be previously unitized to further simplify the handling.

  In addition, the front and rear linear motion units 9 and 10 have the rods 12 arranged in the front and rear reverse directions, and both the front and rear arm bodies 7 and 8 are rotated upward by the pushing operation. Therefore, in a normal posture in which the upper body support frame portion 5 and the leg support frame portion 6 are kept horizontal, the rod 12 is in a retracted and compact state. Therefore, when moving the bed or cleaning the floor surface below the bed. , Do not get in the way.

  The drive device 11 includes a base shaft 13, and the base ends of the front and rear linear motion units 9 and 10 are attached via receiving portions 14 at both ends of the base shaft 13. Accordingly, since the front and rear linear motion units 9 and 10 are operated and the front and rear arm bodies 7 and 8 are rotated, the stress generated when the front and rear arm bodies 7 and 8 are rotated can be supported by the base shaft 13. Since no large load is generated, deformation such as bending does not occur.

  Further, in this embodiment, the front and rear rotating shafts 15 and 16 are pivotally supported by the bearing portions 19 at both ends of the base shaft 13 of the drive device 11, so that the rods 12 of the front and rear linear motion units 9 and 10 are pushed. When the front and rear arm bodies 7 and 8 are rotated by the operation, the load generated between the proximal end portions of the front and rear linear motion units 9 and 10 and the distal end portion of the rod 12 is reliably supported by the base shaft 13. Is done. As a result, the front and rear arm bodies 7, 8 and the upper body support frame portion 5 and leg support frame portion 6 supported by the arm bodies 7 and 8 can be lifted smoothly, and the bed may be deformed or squeaky. Absent. In addition, since the bed frame 4 does not require special reinforcement by using the strong base shaft 13 that sufficiently supports these loads, the structure of the entire bed can be standardized.

  In the drive device 11 configured in this way, as shown in FIG. 7A, the front linear motion device 9 is supported by the front arm body 7 in a posture in which the front side is lowered in a state where the rod 12 is pulled. Since the rear end portion of the head support frame portion 22 is connected and supported to the back support frame portion 20 via the tilting portion 21, the head support frame portion 22 is supported horizontally in the same height as the back support frame portion 20. With this posture, a flat normal use state can be obtained. Next, as shown in FIG. 7B, when the rod 12 of the previous linear motion unit 9 extends a little, the front rotation shaft 15 rotates through the front drive piece 17 so that the front arm body 7 faces upward. To turn. As a result, the slide plate 50 at the tip of the arm body 7 before engaging with the engagement rail 56 of the head support frame portion 22 moves forward, so that the tip of the front arm body 7 is the head support frame portion 22. A head reclining state is formed by lifting the head support frame portion 22 in sliding contact with the lower surface. Thus, in the initial tilt state, when the head reclining state is formed by slightly lifting the front arm body 7 to the extent that only the head support frame portion is lifted, the same comfortable sleeping feeling as when using a pillow without a pillow is obtained. It is preferable at the point which can do.

  When the front linear motion device 9 further pushes the rod 12 as shown in FIG. 7C, the arm body 7 before slidingly contacting the lower surface of the head support frame portion 22 rotates upward, and the head support frame portion. 22 rises greatly. At the same time, the back support frame portion 20 connected to the head support frame portion 22 via the tilting portion 21 is lifted and rotated upward about a pivot point with the heel support frame portion 31. When the front arm body 7 further lifts the head support frame portion 22 in this way, a late tilt state in which the back support frame portion 20 tilts upward while maintaining the head reclining state is formed. It is possible to lift the head while reducing the pressure on the head. As a result, a relaxed and comfortable reclining state can be obtained without feeling tired such as shoulder stiffness even when used for a long time such as watching TV or reading.

  In the state where the rear linear motion device 10 pulls the rod 12 as shown in FIG. 8A in the leg support frame portion 6, the first leg support is placed on the intermediate frame 40 and maintains the horizontal posture. The small roll 53 of the rear arm body 8 is in contact with the lower surface of the frame portion 23. At this time, since the second leg support frame portion 24 is also placed on the intermediate frame 40 in the same manner, the second leg support frame portion 24 is supported horizontally in the same height as the first leg support frame portion 23 in this posture. A normal use state in which the whole is flat can be obtained.

  Next, as shown in FIG. 8 (B), when the rod 12 of the rear linear motion unit 10 extends a little, the rear pivot shaft 16 pivots via the rear drive piece 18, and as a result, the rear arm body. 8 rotates upward. Thus, when the rear arm body 8 rotates upward, the small roll 53 at the tip thereof is in sliding contact with the lower surface of the first leg support frame portion 23, so that the first leg support frame portion 23 supports the heel. The first leg support frame portion 23 rotates upward about a pivot point with the frame portion 31. At this time, as described above, the first leg support frame portion 23 forms the parallel crank mechanism 26 by the second leg support frame portion 24, the link 25, and the rear end region of the intermediate frame 40. In conjunction with the upward rotation of one leg support frame portion 23, the second leg support frame portion 24 is supported by the first leg support frame portion 23 and the link 25 and rises. The leg support frame portion 6 including the leg support frame portions 23 and 24 is lifted.

  As shown in FIG. 8C, when the rear linear motion device 10 pushes the rod 12 further, the first leg support frame portion 23 is pushed up by the arm body 8 that is rotated further upward. The second leg support frame portion 24 further rises in conjunction with increasing the inclination.

  In this way, the sleeper who places the leg portion on the leg support frame portion 6 that is pushed up in conjunction with the subsequent rotation of the arm body 8 gradually lowers the height stepwise from the foot side toward the head. Since it is possible to go to bed in a different posture, blood that has flowed through the soles of the feet easily flows back to the heart, and a sufficient blood circulation promoting effect can be achieved.

  In addition, in the present embodiment, since the leg support frame portion 6 forms the parallel crank mechanism 26, the first and second leg support frame portions 23 and 24 are configured so that the inclination angle and the height can be adjusted. Since a calf can be placed on the top, comfort can be further improved by finely adjusting the angle and height according to the body shape and situation of the sleeping person. Moreover, since the leg support frame portion 6 is lifted by the parallel crank mechanism 26, the lifting mechanism by the subsequent linear motion unit 10 has a simple structure, and the first and second leg support frame portions 23 and 24 are smoothly raised and lowered. can do.

  Thus, in the bed 1, the front linear motion unit 9 and the rear linear motion unit 10 are arranged in a compact manner with the rods 12 facing in parallel and parallel to the bed width direction. Is done. For this reason, since the upper body support frame portion 5 on which the sleeping person and the bedding are placed and the leg support frame portion 6 are lifted up, the noise generated when pushing out the rod with a considerably large output, the sources of vibration are concentrated in one place, soundproofing, Anti-vibration treatment can be easily performed, and adverse effects on the sleeper can be minimized.

  The above description is an example of the embodiment of the present invention. Therefore, the technical scope of the present invention is not limited to this, and various modifications are included in addition to the above-described embodiment.

It is a perspective view which illustrates one embodiment of the present invention. It is the principal part disassembled perspective view. It is the front view. It is the principal part enlarged view. FIG. Furthermore, it is the principal part enlarged view. (A), (B), and (C) are front views for sequentially explaining the operating states of the upper body support frame. (A), (B), and (C) are front views for sequentially explaining the operation state of the leg support frame. It is a front view of a prior art example. It is the schematic explaining the operation state of the upper body support frame part. It is the schematic explaining the operation state of the leg support frame part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bed 2 Bedding mounting surface 3 Bedding receiving frame 4 Bed frame body 5 Upper body support frame part 6 Leg support frame part 7 Front arm body 8 Rear arm body 9 Front linear exerciser 10 Rear linear exerciser 11 Drive device 12 Rod 13 Base shaft 14 Receiving portion 15 Front rotation shaft 16 Rear rotation shaft 17 Front drive piece 18 Rear drive piece 19 Bearing portion 20 Back support frame portion 21 Tilt portion 22 Head support frame portion 23 First leg Support frame portion 24 Second leg support frame portion 25 Link 26 Parallel crank mechanism

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 is disposed on a front side portion where the head of the sleeping person faces, an upper body support frame portion whose rear end portion is pivotally supported by the bed frame body and receives the upper body, and a rear side portion. And a leg support frame part for receiving a sleeping person's leg pivotally supported by the bed frame body,
The bed frame is
An arm body in which the front end portion is in sliding contact with the lower surface of the upper body support frame portion and lifts the upper body support frame portion together with turning upward;
An arm body after a tip part is in sliding contact with the lower surface of the leg support frame part and lifts the leg support frame part together with upward rotation;
A linear motion device before rotating the front arm body;
A drive unit including a linear motion unit after rotating the rear arm body,
The front linear motion device and the rear linear motion device rotate the front and rear arm bodies upward by pushing the rod,
Moreover, the bed is characterized in that the front linear motion unit and the rear linear motion unit are arranged side by side in the bed width direction and parallel to each other, and the rods are arranged in the opposite direction.   The driving device includes a base shaft extending in the front-rear direction, a receiving portion that receives the base end portions of the front linear motion device and the rear linear motion device at both ends of the base shaft, and base end portions of the front and rear arm bodies, respectively. The fixed front pivot shaft and the rear pivot shaft, and one end fixed to the front and rear pivot shafts, and the other end of each rod end of the front linear motion device and the rear linear motion device The bed according to claim 1, comprising a drive piece before and after being pivotally attached to the bed.   The bed according to claim 1 or 2, wherein the front and rear rotating shafts are pivotally supported by bearing portions at both ends of the base shaft of the driving device. The upper body support frame portion includes a back support frame portion whose rear end portion is pivotally supported by the bed frame body and receives a sleeping person's back, an extended state in alignment with the back support frame portion, and the back support frame A head support frame part attached to the front end part of the back support frame part through a tilting part that is lifted with respect to the part and changes to a head reclining state in which the front end can tilt upward,
The bed according to any one of claims 1 to 3, wherein a front end portion of the front arm body slides on a lower surface of the head support frame portion and lifts an upper body support frame portion. The leg support frame portion includes a first leg support frame portion whose front end portion is pivotally supported by the bed frame body and receives a sleeper's thigh, and a front end portion which is a rear end of the first leg support frame portion. A second leg support frame that is foldably attached to the part and receives a sleeping calf's calf,
The rear end of the second leg support frame and the bed frame are connected by a link having substantially the same length as the first leg support frame, and the link, the first leg support frame, A parallel crank mechanism is formed by the two leg support frame portions and the bed frame body, and the distal end portion of the rear arm body is in sliding contact with the lower surface of the first leg support frame portion to hold the leg support frame portion. The bed according to any one of claims 1 to 4, wherein the bed is raised.

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