JP4802201B2 - Reclining bed - Google Patents

Description

  The present invention relates to a reclining bed, and more particularly to a reclining bed configured such that a back receiving part and a thigh receiving part for receiving a user's back part and thigh part are tilted up and down. It is.

  Conventionally, the reclining bed used as a nursing bed is a reclining bed that is constructed so that the back and thigh cradles that receive the user's back and thighs are tilted up and down. Widely known (for example, see Patent Document 1).

  This conventional reclining bed includes a back cradle for receiving the user's back, a butt cradle for receiving the user's butt, a thigh cradle for receiving the user's thigh, and the user's back. A body cradle composed of a crus cradle that receives the lower leg part is arranged on the upper part of the base, and the back cradle and the thigh cradle are pivotably attached to the base. It was.

  In addition, the conventional reclining bed includes a back raising mechanism that raises the back cradle with respect to the base, a thigh raising mechanism that raises the thigh cradle with respect to the base, and these A link mechanism that interlocks and connects the back raising mechanism and the thigh raising mechanism and a drive mechanism that drives the link mechanism are provided.

  The conventional thigh raising / lowering mechanism of the reclining type bed is provided with a swing arm for raising and lowering the thigh cradle on the base so that the tip of the swing arm can be moved freely. The thigh cradle is erected by swinging from the base end side of the base cradle to the front end side, and then the tip of the swing arm swings from the thigh cradle to the crus base. The distal end portion of the swing arm is configured to lie down on the thigh cradle by swinging from the proximal end side to the distal end side of the crus base.

JP 2004-16635 A

  However, in the conventional reclining bed, when the thigh cradle is erected, the distal end of the swing arm is moved from the base end side of the thigh cradle toward the distal end side. The thigh cradle will be raised at the tip of the swaying arm while moving the swaying arm away from the pivot part of the thigh cradle and base. The rotational moment acting to raise the thigh cradle was gradually increased. On the other hand, when the inclination angle (stand-up angle) of the thigh cradle increases, the component force toward the lower side of the weight of the user's thigh acting on the thigh cradle decreases accordingly. It was.

  Therefore, immediately after the start of the standing operation of the thigh cradle, the weight of the user's thigh acts on the thigh cradle, and a large rotational moment is required to stand the thigh cradle. Nevertheless, the initial rotational moment is small, and the thigh cradle may not be able to stand up smoothly.

Therefore, in the present invention, in the reclining bed, a back cradle that receives the back part of the user, a butt base that receives the butt part of the user, a thigh base that receives the thigh part of the user, A body cradle, which consists of a crus base that receives the user's lower leg, is placed at the top of the base, and the back and thigh cradles can be tilted with respect to the base. A back raising mechanism that pivots and raises the back receiving base relative to the base, a thigh raising mechanism that causes the thigh receiving base to rise relative to the base, and these back raising mechanisms group and a linkage mechanism for interlocking connecting the thigh raisably mechanism, and a driving mechanism for driving the link mechanism, thigh raisably mechanism, the swing arm to defeat caused the femoral cradle together arranged freely swing to the base, thigh pedestal by the leading end of the rocking arm is swung to the base end side from the distal end side of the thigh cradles Is raised, the link mechanism, the connection member back and forth movably crank connected to the back raisably mechanism connected to the thigh raisably mechanism, reciprocating the connecting body while erecting the back cradle by back raisably mechanism Move and raise the thigh cradle by raising the thigh cradle, then lie down and connect the back tilt mechanism to the coupling body, or connect the thigh tilt mechanism to the coupling body , or were to be configured so that can change any of the length from the connection position between the connecting member and the back raisably mechanism to the connection position of the connecting member and the thigh raisably mechanism.

  And in this invention, there exists an effect described below.

  That is, in the present invention, since the tip of the swing arm swings from the tip side to the base side of the thigh cradle, the thigh cradle is raised, Immediately after the stand erecting operation starts, the rotational moment acting to erect the thigh cradle from the distal end of the swing arm can be increased, and the thigh cradle can be raised smoothly.

  Further, in the present invention, the connecting body crank-connected to the back raising mechanism so as to be reciprocally movable is connected to the thigh raising mechanism, and the connecting body is reciprocated while the back receiving stand is raised by the back raising mechanism. The thigh cradle stands up and then lies down after the thigh cradle is raised. The body can be prevented from slipping down to the thigh cradle side due to the standing of the back cradle. Thus, it is possible to prevent the user's body from being pressed between the back support and the thigh support.

  Further, in the present invention, the thigh is determined from the connection position between the back raising mechanism and the coupling body, the connection position between the thigh raising mechanism and the coupling body, or the connection position between the back raising mechanism and the coupling body. Since it is configured to be able to change any length up to the connection position between the body raising and lowering mechanism and the coupling body, the back cradle can be raised or raised depending on the user's physique and preference. Since the standing angle of the thigh cradle at the end can be easily changed as appropriate, the usability of the reclining bed can be improved.

  Hereinafter, a specific configuration of the reclining bed according to the present invention will be described with reference to the drawings.

[Example 1]
As shown in FIGS. 1 and 2, the reclining bed 1 has a recumbent base 3 on which a user lies on an upper part of a fixed base 2 configured to be movable up and down so as to be separable up and down.

  As shown in FIGS. 1 to 3, the fixed base 2 has a rectangular shape in which a pair of front and rear connecting frames 6 and 7 are attached to the front and rear ends of a pair of left and right base frames 4 and 5. A frame-shaped base frame 8 is formed.

  In addition, the fixed base 2 is attached to the left and right sides of the connecting frames 6 and 7 of the base frame 8, respectively, and a lifting arm 10 is pivotally attached to the upper end of each supporting pole 9 so as to be vertically movable. The connecting pipes 11 are respectively attached between the insides of the arms 10, and the columnar connecting bosses 12 extending left and right are formed outside the left and right lifting arms 10, respectively. The connecting boss 12 is used for mounting the horizontal base 3 on the top.

  Further, the fixed base 2 connects the parallel link mechanism 13 between the front and rear connecting pipes 11 to interlock the front and rear connecting pipes 11 and the front and rear lifting arms 10 and fixes the base end to the horizontal base 3. The tip of the telescopic rod 15 of the stroke motor 14 (electric actuator) is connected to the front connecting pipe 11 via the bracket 16.

  As a result, the fixed base 2 uses the stroke motor 14 as a drive mechanism, drives the stroke motor 14 to expand and contract the telescopic rod 15, thereby rotating the lifting arm 10 up and down relative to the base frame 8. Along with this, the recumbent base 3 placed on the upper part of the connecting boss 12 formed on the lifting arm 10 is moved up and down.

  As shown in FIGS. 1, 2, and 4, the recumbent base 3 has a base 17 that is detachably mounted on the upper part of the fixed base 2, and a user's body is placed on the upper part of the base 17. A body cradle 18 is attached, and a reclining mechanism 19 is interposed between the base 17 and the body cradle 18.

  Hereinafter, specific structures of the base 17, the body cradle 18, and the reclining mechanism 19 will be described in order.

  First, the structure of the base 17 will be described. As shown in FIGS. 1, 2, and 4, the base 17 has a horizontally long rectangular shape at the front and rear ends of a pair of left and right main frames 20, 21. A plate-like head board 22 and foot board 23 are attached, and a support frame 24 is attached between the front ends of the main frames 20 and 21.

  In addition, the base 17 has connecting brackets 25 attached to the front and rear lower portions of the left and right main frames 20 and 21, and the connecting bracket 25 is detachably connected to the connecting boss 12 of the fixed base 2.

  As shown in FIG. 5, the connection bracket 25 is attached to a lower end portion of the main frames 20, 21 with a substantially downward triangular connection plate 26 in a side view, and is inserted into the upper portion of the connection boss 12 in the middle of the connection plate 26. The upper insertion piece 27 is formed facing inward.

  The connecting bracket 25 has a vertically long rectangular plate-like lock plate 28 attached to the outside of the connecting plate 26 so that it can swing back and forth with a shaft pin 29, and is fitted to the lower end of the lock plate 28 at the lower part of the connecting boss 12. A lock pin 31 is formed on the upper end portion of the lock plate 28 so as to be able to move forward and backward. A through-hole lock hole 32 into which the tip of 31 is inserted is formed in the connecting plate 26.

  Here, in the connection bracket 25, the upper insertion piece 27 and the lower insertion piece 30 have an arc shape along the outer peripheral surface of the cylindrical connection boss 12, and the upper insertion piece 27 is the same as the outer peripheral surface of the connection boss 12. The lower insertion piece 30 is an arc surface having a slightly larger radius than the outer peripheral surface of the connecting boss 12.

  Then, the connecting bracket 25 is moved forward or backward to shift the lower insertion piece 30 forward or backward (indicated by a one-dot chain line in FIG. 5), thereby connecting the connecting boss 12 of the fixed base 2. The connecting plate 26 of the horizontal base 3 can be placed on the top of the base plate, or the connecting plate 26 of the horizontal base 3 can be pulled up from the upper part of the connecting boss 12 of the fixed base 2, and the lock plate 28 can be swung. By moving the lower insertion piece 30 downward (indicated by a solid line in FIG. 5), the lower insertion piece 30 is inserted into the lower portion of the connecting boss 12 of the fixed base 2, and the upper insertion piece 27 and the lower insertion piece are inserted. 30, the outer peripheral surface of the connecting boss 12 is rotatably held, and the connecting plate 26 of the horizontal base 3 can be fixed to the connecting boss 12 of the fixing base 2.

  As described above, the reclining bed 1 is provided with the body cradle 18 for receiving the user's body at the top of the base 17 and the base 17 at the top of the fixed base 2 in a separable manner. In addition, a connecting boss 12 is formed on the fixed base 2, an upper fitting piece 27 that fits on the upper part of the connecting boss 12 is formed on the base 17, and a lower fitting piece 30 that fits on the lower part of the connecting boss 12 is formed on the base 17. The lower insertion piece 30 is provided on the base 17 so as to be swingable, and the lower insertion piece 30 can be fixed to the base 17 in a state where the lower insertion piece 30 is inserted into the lower portion of the connecting boss 12.

  Therefore, in the reclining bed 1 having the above-described configuration, the fixing base 2 and the base 17 can be fixed and released easily and reliably, and the upper insertion piece 27 and the lower insertion piece 30 are connected in cooperation. It is possible to prevent the upper insertion piece 27 and the lower insertion piece 30 from being detached from the connecting boss 12 and to prevent the base 17 from dropping from the fixed base 2. Can be prevented.

  Further, the reclining bed 1 is provided with a lifting arm 10 for raising and lowering the base 17 on the fixed base 2 so as to be capable of swinging, a columnar connecting boss 12 is formed on the lifting arm 10, and an upper insertion piece 27 and The lower insertion piece 30 is formed in an arc shape along the outer peripheral surface of the connection boss 12, and the connection boss 12, the upper insertion piece 27, and the lower insertion piece 30 are rotatably connected.

  Therefore, in the reclining bed 1 having the above-described configuration, the upper insertion piece 27 and the lower insertion piece 30 are rotated along the connecting boss 12 when the fixing base 2 is moved up and down, and the upper insertion piece 27 and the lower insertion piece 30 are Can be prevented from coming off from the connecting boss 12.

  Next, the structure of the body cradle 18 will be described. As shown in FIGS. 1, 2, and 4, the body cradle 18 includes a rectangular plate-shaped back cradle 33 that receives the back portion of the user, Rectangular plate-shaped buttocks cradle 34 that receives the user's buttocks, rectangular plate-shaped thigh cradle 35 that receives the user's thighs, and rectangular plate-shaped crus that receive the user's lower leg A plurality of flexures (here, three locations (see FIG. 6)) that are configured by the cradle 36 and receive the knee portion of the user between the thigh cradle 35 and the crus cradle 36. A knee support 40 having portions 37, 38, and 39 is formed.

  The back receiving base 33 is pivotally attached to the upper part of the main frames 20 and 21 of the base 17 so that the rear end side can be tilted up and down, and the front end part on the front end side with the base end part at the center. Is tilted up and down (see FIG. 8).

  The bottom receiving base 34 is fixed to the upper part of the main frames 20 and 21 of the base 17.

  The thigh cradle 35 is pivotally attached to the upper part of the main frames 20 and 21 of the base 17 with the front end side as a base end part so that it can be tilted up and down. The tip is pivoted up and down to be in an inclined state (see FIG. 8).

  The crus pedestal 36 is pivotally attached to the distal end of the thigh cradle 35 with the front end side as a base end part via a knee cradle 40 so that the base end part can be pivoted up and down. The front end on the rear end side is turned up and down around the center so as to be inclined (see FIG. 8).

  As shown in FIG. 6, the knee support 40 includes a pair of front and rear strip-like supports 41 and 42 that are extended to the left and right, and a front end (rear end) of the thigh support 35 and a lower leg support. A plurality of flexible connecting belts 43 are connected to the base end portion (front end portion) of the base 36, and the front and rear support bodies 41 and the front support 41 are connected to each other. Bending portions 37, 38, 39 are formed between the support bodies 41, 42 and between the rear support body 42 and the lower leg support 36, respectively.

  A pair of left and right hinges 44 are slidably attached in the front-rear direction between the left and right ends of the thigh cradle 35 and the crus cradle 36.

  This hinge 44 has a U-shaped front holding body 45 extending over the left and right ends of the thigh cradle 35 and a rear side of the U-shaped cross section straddling the left and right ends of the crus cradle 36. The holding body 46 is connected to the nut portion 48 formed through the left and right ends of the thigh receiving base 35 and the crus receiving base 36 through the connecting pin 47 so as to be vertically rotatable. The front holding body 45 is fixed to the thigh cradle 35 by screwing a fixing bolt 50 through which a connecting hole 49 formed in a penetrating manner is formed on the upper surface of the holding bodies 45 and 46 with a space in the front-rear direction. At the same time, the rear holding body 46 is fixed to the lower leg support 36. In this way, when the hinge 44 is formed in a U-shaped cross section and the hinge 44 is straddled on the left and right ends of the body cradle 18, a pin that penetrates the hinge 44 without using the fixing bolt 50 is used. The hinge 44 can be easily fixed to the body cradle 18.

  Here, the hinge 44 has the same distance between the front and rear of the connecting hole 49 as the distance between the front and rear of the bent portions 37, 38, and 39 of the knee receiving base 40. , 38, 39 and the bent portion (connecting pin 47) of the hinge 44 can be fixed to the thigh receiving base 35 and the crus receiving base 36 at positions where the hinge 44 corresponds. When the hinge 44 is fixed to the thigh cradle 35 and the crus cradle 36 at a position where the bent part 37 on the front side of the knee cradle 40 and the bent part (connecting pin 47) of the hinge 44 correspond to each other. The front holding body 45 is straddled only on the thigh cradle 35, and the rear holding body 46 is straddled across the front and rear supports 41, 42 and the crus cradle 36. When the hinge 44 is fixed to the thigh cradle 35 and the crus cradle 36 at a position where the bent portion 38 of the center of the knee cradle 40 and the bent portion of the hinge 44 (connecting pin 47) correspond. The front holding body 45 is straddled over the thigh cradle 35 and the front support body 41, and the rear holding body 46 is straddled over the rear support body 42 and the crus support 36. Further, the hinge 44 was fixed to the thigh cradle 35 and the crus cradle 36 at a position corresponding to the bent part 39 on the rear side of the knee cradle 40 and the bent part (connecting pin 47) of the hinge 44. In this case, the front holding body 45 is straddled across the thigh cradle 35 and the front and rear supports 41 and 42, and the rear holding body 46 is straddled only on the crus cradle 36.

  As described above, the reclining bed 1 has a pair of left and right hinges 44 slidably disposed in the front-rear direction between the left and right ends of the thigh cradle 35 and the crus cradle 36. .

  Therefore, in the reclining bed 1, the bending portion (the connecting pin 47) between the thigh cradle 35 and the crus cradle 36 according to the user's body simply by moving the hinge 44 back and forth. The position can be easily changed.

  The reclining bed 1 includes a knee support 40 having a plurality of bent portions 37, 38, 39 for receiving the knee portion of the user between the thigh support 35 and the crus support 36. The hinge 44 is placed at the position where the bent portions 37, 38, 39 of the knee support 40 and the bent portion (connecting pin 47) of the hinge 44 correspond to each other. It can be fixed to the base 35 and the lower leg support 36.).

  Therefore, in the reclining bed 1, the positions of the bent portions 37, 38, 39 of the knee receiving base 40 and the position of the bent portion (connecting pin 47) of the hinge 44 can be easily matched. The position of the bent portions 37, 38, 39 of the base 40 and the position of the bent portion (connecting pin 47) of the hinge 44 coincide with each other so that the thigh receiving base 35 and the crus receiving base 36 are bent smoothly. be able to.

  In the reclining bed 1, the hinge 44 is fixed to the thigh cradle 35 and the crus cradle 36 with the fixing bolt 50, but the present invention is not limited to this. It may be fixed directly to the cradle 40. Thus, when the hinge 44 is fixed to the knee support 40, the bent portion 37 of the knee support 40, without fixing the hinge 44 to the thigh support 35 or the lower leg support 36, It can be firmly fixed in the vicinity of 38 and 39.

  Next, the structure of the reclining mechanism 19 will be described. The reclining mechanism 19 has a back portion raising mechanism for raising and lowering the back receiving base 33 with respect to the base 17 as shown in FIGS. 1, 2, 4, and 7. The fall mechanism 51, the thigh raising mechanism 52 for raising the thigh cradle 35 with respect to the base 17, and the back raising mechanism 51 and the thigh raising mechanism 52 are linked to each other. A link mechanism 53 and a drive mechanism 54 for driving the link mechanism 53 are included.

  The back raising / lowering mechanism 51 attaches a pair of left and right brackets 55 to the lower part of the buttocks cradle 34 and swings up and down with the rear end side of the pair of left and right rotating arms 56 as the base end at the front end of the bracket 55. A rotating shaft 57 extended to the left and right is rotatably attached to the front end portion of the rotating arm 56, and a pair of left and right rolling wheels 58 are rotated to the left and right ends of the rotating shaft 57. Install freely. The back raising / lowering mechanism 51 swings the rotating arm 56 up and down, so that the rolling wheels 58 that contact the lower portion of the back receiving base 33 and support the back receiving base 33 follow the back receiving base 33. The back support 33 is raised and lowered by moving up and down. Further, in the initial state (the state shown in FIGS. 7 and 8A) of the back raising / lowering mechanism 51, the rolling wheel 58 is positioned below the lower surface of the back receiving base 33, and the rotating arm 56 Immediately after the start of rotation, the back receiving base 33 is not raised.

  The thigh raising / lowering mechanism 52 has a pair of left and right brackets 59 attached to a support frame (not shown) interposed between the main frames 20 and 21 of the base 17, and a pair of left and right far ends on the lower end of the bracket 59. A front end portion side of the moving arm 60 is attached as a base end portion so as to freely move up and down, and a rolling wheel 61 is rotatably attached between the distal end portions on the rear end portion side of the moving arm 60. The thigh raising / lowering mechanism 52 swings the swing arm 60 up and down so that the rolling wheels 61 that support the thigh cradle 35 by contacting the lower part of the thigh cradle 35 are provided. The thigh cradle 35 is moved up and down along the thigh cradle 35, so that the thigh cradle 35 and the lower leg cradle 36 are raised and lowered. In the initial state (the state shown in FIGS. 7 and 8A), the thigh raising / lowering mechanism 52 has the rolling wheel 61 in contact with the lower surface of the thigh cradle 35 and the swing arm 60. The thigh cradle 35 is erected immediately after the start of rotation.

  Here, the thigh raising / lowering mechanism 52 arranges the proximal end portion of the swing arm 60 on the front side and the distal end portion of the swing arm 60 on the rear side, However, the thigh cradle 35 is caused to stand up by swinging from the distal end portion on the rear end side to the proximal end portion on the front end side.

  The link mechanism 53 attaches the front end portion of the rod-like connecting body 62 to the middle lower part of the turning arm 56 of the back raising mechanism 51 so as to be rotatable up and down, and the rear end portion of the connecting body 62 as the thigh raising mechanism. It is attached to the middle part of the 52 swing arms 60 so as to be rotatable up and down.

  Here, in the link mechanism 53, the connecting portion between the rotating arm 56 and the coupling body 62 passes immediately before the rotation center of the rotating arm 56 as the rotating arm 56 of the back raising / lowering mechanism 51 rotates. As a result, the connecting body 62 is connected in a crank shape so that the connecting body 62 can reciprocate back and forth, and immediately after the rotation arm 56 of the back raising / lowering mechanism 51 starts to rotate, the connecting body 62 moves forward to move the thigh. The swaying arm 60 of the part raising / lowering mechanism 52 is swayed forward and the thigh cradle 35 is erected, and then the connecting portion between the rotating arm 56 and the coupling body 62 is rotated by the rotating arm 56. Passing just before the center of movement, the connecting body 62 moves rearward so that the swing arm 60 of the thigh raising / lowering mechanism 52 swings backward and the thigh cradle 35 is laid down. ing.

  The drive mechanism 54 has a bracket 63 attached to the middle part of the support frame 24 of the base 17, and a stroke motor 64 (electric actuator) attached to the bracket 63 so as to be rotatable up and down. The middle part of the rotation arm 56 of the back part raising / lowering mechanism 51 is attached to be freely rotatable up and down.

  The reclining mechanism 19 drives the stroke motor 64 of the drive mechanism 54 and expands / contracts the telescopic rod 65 of the stroke motor 64, thereby rotating the rotating arm 56 of the back raising / lowering mechanism 51 to rotate the back receiving base. 33, and the swing arm 60 of the thigh raising / lowering mechanism 52 is rotated via the link mechanism 53 so that the thigh receiving base 35 is raised together with the lower thigh receiving base 36. Yes.

  At that time, in the reclining bed 1 having the above-mentioned configuration, as shown in FIG. 8A, in the initial state, the back receiving base 33, the thigh receiving base 35, and the crus receiving base 36 are all flat. In this initial state, when the stroke motor 64 of the drive mechanism 54 is driven to extend the telescopic rod 65, the rolling wheel 58 of the back raising mechanism 51 in the initial state is Since it is located below the lower surface and the rolling wheel 61 of the thigh raising / lowering mechanism 52 is in contact with the lower surface of the thigh cradle 35, as shown in FIG. The pivot arm 56 of the back raising / lowering mechanism 51 pivots upward in conjunction with the drive of the rear, and accordingly the connecting body 62 moves forward, and the swing arm 60 of the thigh raising / lowering mechanism 52 Although it rotates upward, the back cradle 33 does not stand up and the thigh cradle 35 and the crus cradle 36 are raised up to a predetermined angle first. To.

  After that, when the stroke motor 64 is continuously driven, as shown in FIG. 8 (c), the rotation arm 56 of the back raising / lowering mechanism 51 is rotated upward in conjunction with the stroke motor 64, and connected accordingly. The body 62 moves forward, the swing arm 60 of the thigh raising / lowering mechanism 52 rotates upward, and the back support 33 stands up to a predetermined angle, while the thigh support 35 Stand up until the lower leg support 36 reaches the maximum inclination angle.

  Thereafter, when the stroke motor 64 is continuously driven, as shown in FIG. 8 (d), the rotation arm 56 of the back raising / lowering mechanism 51 is rotated upward in conjunction therewith, and accordingly, The connecting body 62 is now moved rearward, the swing arm 60 of the thigh raising / lowering mechanism 52 is rotated downward, and the back support 33 is raised until the maximum inclination angle is reached. The cradle 35 and the crus cradle 36 are laid down until they become flat.

  After that, when the stroke motor 64 is driven in reverse, the telescopic rod 65 of the stroke motor 64 is shortened and operates in the direction opposite to the above.

  As described above, the reclining bed 1 is configured such that, in the thigh raising / lowering mechanism 52, the distal end portion of the swing arm 60 swings from the distal end side to the proximal end side of the thigh receiving base 35 so that the thigh portion is supported. The cradle 35 is configured to stand up.

  For this reason, in the reclining bed 1 having the above-described configuration, the rotational moment acting so as to erect the thigh cradle 35 from the tip of the swing arm 60 immediately after the start of the erecting movement of the thigh cradle 35 is increased. The thigh cradle 35 can be raised smoothly.

  In addition, the reclining bed 1 connects the connecting body 62, which is crank-connected to the back raising mechanism 51 so as to be reciprocally movable, to the thigh raising mechanism 52 and causes the back receiving base 33 to stand upright by the back raising mechanism 51. The connecting body 62 is reciprocated between them, and the thigh cradle 35 is erected by the thigh erection mechanism 52 and then laid down.

  Therefore, in the reclining bed 1 configured as described above, immediately after the start of the standing motion of the back receiving base 33, the thigh receiving base 35 stands up, and the user's body stands by the back receiving base 33 standing up. It is possible to prevent the base 35 from slipping down, and after the standing motion of the back support 33 is finished, the thigh support 35 falls down and the user's body is placed on the back support 33. And the thigh cradle 35 can be prevented from being pressed.

[Example 2]
In the reclining bed 1, the connection position between the back raising mechanism 51 and the coupling body 62 of the reclining mechanism 19 and the connection position between the thigh raising mechanism 52 and the coupling body 62 are fixed. From the connecting position between the back raising mechanism 51 and the connecting body 62, the connecting position between the thigh raising mechanism 52 and the connecting body 62, or the connecting position between the back raising mechanism 51 and the connecting body 62. The reclining mechanism 19 can also be configured such that any one of the lengths up to the connection position between the thigh raising / lowering mechanism 52 and the coupling body 62 can be changed.

  Hereinafter, the reclining bed 66 configured to change the connection position between the back raising / lowering mechanism 51 and the coupling body 62 will be described. In the following description, members having the same functions as those of the reclining bed 1 according to the first embodiment will be described using the same names and symbols as those of the first embodiment.

  As shown in FIG. 9, the reclining bed 66 has substantially the same configuration as the reclining bed 1, but the reclining mechanism 19 has a distance from the rotation center to the rotating arm 56 of the back raising / lowering mechanism 51. The first and second connection holes 67 and 68 are different from each other, and the connection pin 69 is detachably provided at the distal end portion of the connection body 62, so that either of the first and second connection holes 67 and 68 is provided. By attaching the connecting pin 69, the connecting body 62 and the turning arm 56 of the back raising / lowering mechanism 51 are connected so as to be vertically rotatable.

  As described above, in the reclining bed 66, the first and second connecting holes 67 and 68 are formed in the rotating arm 56 of the back raising / lowering mechanism 51 in order to connect the connecting body 62. The connection position between the mechanism 51 and the coupling body 62 can be changed (see FIGS. 9A and 9B).

  Here, in the reclining type bed 66, in the initial state shown in FIG. 9, the connecting pin 69 and the rotating arm 56 are connected using the first connecting hole 67 (see FIG. 9A). In the case where the connecting pin 69 and the rotating arm 56 are connected using the second connecting hole 68 (see FIG. 9B), the rolling wheel 61 at the tip of the swing arm 60 is received by the thigh receiving portion. In this case, a gap is formed between the rolling wheel 61 and the lower surface of the thigh receiving base 35.

  In the reclining bed 66, the stroke motor 64 is driven to expand and contract the telescopic rod 65 of the stroke motor 64, thereby rotating the rotating arm 56 of the back raising / lowering mechanism 51 to raise the back receiving base 33. At the same time, the swing arm 60 of the thigh raising / lowering mechanism 52 is rotated via the link mechanism 53 so that the thigh receiving base 35 and the lower thigh receiving base 36 are turned upside down.

  At that time, when the connecting pin 69 and the rotating arm 56 are connected using the first connecting hole 67 (see FIG. 9A), as shown in FIG. In FIG. 3, the back receiving base 33, the thigh receiving base 35, and the crus receiving base 36 are all lying flat.

  When the telescopic rod 65 of the stroke motor 64 is extended from this initial state, the rolling wheel 58 of the back raising / lowering mechanism 51 is located below the lower surface of the back receiving base 33 in the initial state, and the thigh raising / lowering mechanism 52 Since the rolling wheel 61 is located below the lower surface of the thigh cradle 35, as shown in FIG. 10 (b), the rotating arm of the back tilting mechanism 51 is interlocked with the stroke motor 64. 56 is rotated upward, and the connecting body 62 is moved forward along with it, and the swing arm 60 of the thigh raising / lowering mechanism 52 is rotated upward to rotate the back raising / lowering mechanism 51. The driving wheel 58 is positioned below the lower surface of the back receiving base 33, and the rolling wheel 61 of the thigh raising / lowering mechanism 52 contacts the lower surface of the thigh receiving base 35.

  Thereafter, when the telescopic rod 65 of the stroke motor 64 is further extended, the rolling wheel 58 of the back raising mechanism 51 is positioned below the lower surface of the back receiving base 33, and the rolling wheel 61 of the thigh raising mechanism 52 is located. Is in contact with the lower surface of the thigh cradle 35, and as shown in FIG. 10 (c), the rotating arm 56 of the back raising / lowering mechanism 51 rotates upward in conjunction with the stroke motor 64. Accordingly, the connecting body 62 moves forward, and the swing arm 60 of the thigh raising / lowering mechanism 52 rotates upward, but the back receiving base 33 does not stand up and receives the thigh receiving part. The table 35 and the lower leg support 36 stand up to a predetermined angle first.

  After that, when the telescopic rod 65 of the stroke motor 64 is further extended, as shown in FIG.10 (d), in conjunction with it, the turning arm 56 of the back raising / lowering mechanism 51 turns upward, At the same time, the connecting body 62 moves forward, the swing arm 60 of the thigh raising / lowering mechanism 52 rotates upward, and the back receiving base 33 stands up to a predetermined angle. The stand 35 and the crus receiving stand 36 stand up to the maximum inclination angle.

  After that, when the telescopic rod 65 of the stroke motor 64 is further extended, as shown in FIG. 10 (e), the rotation arm 56 of the back part raising mechanism 51 is rotated upward in conjunction with it, Along with this, the connecting body 62 moves rearward, the swing arm 60 of the thigh raising / lowering mechanism 52 rotates downward, and stands until the back receiving base 33 reaches the maximum inclination angle, The thigh cradle 35 and the crus cradle 36 are laid down until they become flat.

  After that, when the stroke motor 64 is driven in reverse, the telescopic rod 65 of the stroke motor 64 is shortened and operates in the direction opposite to the above.

  On the other hand, when the connecting pin 69 and the rotating arm 56 are connected using the second connecting hole 68 (see FIG. 9B), in the initial state, as shown in FIG. The back receiving base 33, the thigh receiving base 35, and the crus receiving base 36 are all lying flat.

  When the telescopic rod 65 of the stroke motor 64 is extended from this initial state, the rolling wheel 58 of the back raising / lowering mechanism 51 is located below the lower surface of the back receiving base 33 in the initial state, and the thigh raising / lowering mechanism 52 Since the rolling wheel 61 is located below the lower surface of the thigh cradle 35, as shown in FIG. 11 (b), the rotating arm of the back tilting mechanism 51 is interlocked with the stroke motor 64. 56 is rotated upward, and the connecting body 62 is moved forward along with it, and the swing arm 60 of the thigh raising / lowering mechanism 52 is rotated upward to rotate the back raising / lowering mechanism 51. The driving wheel 58 is positioned below the lower surface of the back receiving base 33, and the rolling wheel 61 of the thigh raising / lowering mechanism 52 contacts the lower surface of the thigh receiving base 35.

  Thereafter, when the telescopic rod 65 of the stroke motor 64 is further extended, the rolling wheel 58 of the back raising mechanism 51 is positioned below the lower surface of the back receiving base 33, and the rolling wheel 61 of the thigh raising mechanism 52 is located. Is in contact with the lower surface of the thigh cradle 35, and as shown in FIG. 11 (c), the rotating arm 56 of the back raising / lowering mechanism 51 rotates upward in conjunction with the stroke motor 64. Accordingly, the connecting body 62 moves forward, and the swing arm 60 of the thigh raising / lowering mechanism 52 rotates upward, but the back receiving base 33 does not stand up and receives the thigh receiving part. The table 35 and the lower leg support 36 stand up to a predetermined angle first. The standing angle of the thigh cradle 35 at this time is the case where the second connecting hole 68 is used for connection rather than the case where the first connecting hole 67 is used for connection (see FIG. 10 (c)). (See Fig. 11 (c).)

  Thereafter, when the telescopic rod 65 of the stroke motor 64 is further extended, as shown in FIG. 11 (d), in conjunction with it, the rotation arm 56 of the back raising mechanism 51 rotates upward, At the same time, the connecting body 62 moves forward, the swing arm 60 of the thigh raising / lowering mechanism 52 rotates upward, and the back receiving base 33 stands up to a predetermined angle. The stand 35 and the crus receiving stand 36 stand up to the maximum inclination angle. At this time, the maximum inclination angle of the thigh cradle 35 is connected using the second connection hole 68 rather than the case where the connection is made using the first connection hole 67 (see FIG. 10 (d)). The case (see FIG. 11 (d)) is larger.

  After that, when the telescopic rod 65 of the stroke motor 64 is further extended, as shown in FIG. 11 (e), in conjunction with it, the rotating arm 56 of the back raising mechanism 51 rotates upward, Along with this, the connecting body 62 moves rearward, the swing arm 60 of the thigh raising / lowering mechanism 52 rotates downward, and stands until the back receiving base 33 reaches the maximum inclination angle, The thigh cradle 35 and the crus cradle 36 are laid down until they reach a predetermined angle. At this time, when connected using the first connecting hole 67 (see FIG. 10 (e)), the thigh cradle 35 and the crus cradle 36 lie down until they become flat. However, when the connection is made using the second connecting hole 68 (see FIG. 11 (e)), the thigh cradle 35 and the crus cradle 36 are at a predetermined angle. I am trying to surrender. Therefore, when the back cradle 33 is erected to raise the user's upper body, the user's knee is lightly bent, and the user can be stabilized on the upper part of the body cradle 18.

  After that, when the stroke motor 64 is driven in reverse, the telescopic rod 65 of the stroke motor 64 is shortened and operates in the direction opposite to the above.

  As described above, the reclining bed 66 is configured so that the connection position between the back raising / lowering mechanism 51 and the coupling body 62 can be changed. By simply changing the connection position, it is possible to easily change the standing angle of the thigh cradle 35 when the back cradle 33 starts up or ends, depending on the user's physique and preferences. Therefore, the usability of the reclining bed 66 can be improved.

  In the reclining bed 66, the first and second connecting holes 67 and 68 are formed in the rotating arm 56 of the back raising / lowering mechanism 51 to thereby change the connection position between the back raising / lowering mechanism 51 and the connecting body 62. Although it is configured to be changeable, the present invention is not limited to this, and the back part is also tilted by forming a plurality of connecting holes for connecting to the back part raising / lowering mechanism 51 (rotating arm 56) at the tip of the connecting body 62. The connection position between the mechanism 51 and the coupling body 62 can be changed.

  In the reclining bed 66, the connection position between the back raising / lowering mechanism 51 and the connecting body 62 can be changed. However, the present invention is not limited to this, and the thigh raising / lowering mechanism 52 (swinging arm 60) A plurality of connecting holes for connecting to the connecting body 62 are formed on the base, or a plurality of connecting holes for connecting to the thigh raising / lowering mechanism 52 (the swing arm 60) are formed at the base end of the connecting body 62. It is possible to change the connection position between the thigh raising / lowering mechanism 52 and the coupling body 62, and to further extend the length of the coupling body 62 so that the back portion can be formed. The length from the connection position between the raising / lowering mechanism 51 and the coupling body 62 to the connection position between the thigh raising / lowering mechanism 52 and the coupling body 62 may be changeable.

The top view which shows a reclining type bed. The same side view. The top view (a) and side view (b) which show a fixed base. A plan view (a) and a side view (b) showing a recumbent table. The side view (a) which shows a connection bracket, and sectional drawing (b). A plan view (a), a side view (b), and a sectional view (c) showing a knee support. The side view which shows a reclining mechanism. Explanatory drawing which shows reclining operation | movement. FIG. 6 is a side view showing a reclining mechanism according to a second embodiment. FIG. 9 is an explanatory diagram illustrating a reclining operation according to the second embodiment. FIG. 9 is an explanatory diagram illustrating a reclining operation according to the second embodiment.

Explanation of symbols

1 Reclining bed 2 Fixed base 3 Horizontal bed 4,5 Base frame
6,7 Connecting frame 8 Base frame 9 Post 10 Lifting arm
11 Connecting pipe 12 Connecting boss
13 Parallel link mechanism 14 Stroke motor
15 Telescopic rod 16 Bracket
17 Base 18 Body cradle
19 Reclining mechanism 20,21 Mainframe
22 Headboard 23 Footboard
24 Support frame 25 Connecting bracket
26 Connecting plate 27 Upper fitting piece
28 Lock plate 29 Axis pin
30 Lower insertion piece 31 Lock pin
32 Lock hole 33 Back cradle
34 Bottom cradle 35 Thigh cradle
36 Lower leg support 37, 38, 39 Bend
40 Knee cradle 41, 42 Support
43 Connecting belt 44 Hinge
45 Front holder 46 Rear holder
47 Connecting pin 48 Nut
49 Connecting hole 50 Fixing bolt
51 Back raising mechanism 52 Thigh raising mechanism
53 Link mechanism 54 Drive mechanism
55 Bracket 56 Rotating arm
57 Rotating shaft 58 Rolling wheel
59 Bracket 60 Shaking arm
61 Rolling wheel 62 Linked body
63 Bracket 64 Stroke motor
65 Telescopic rod 66 Reclining bed
67 First connection hole 68 Second connection hole
69 Connecting pin

Claims (1)

A back cradle for receiving the user's back, a butt cradle for receiving the user's butt, a thigh cradle for receiving the user's thigh, and a crus receiving for the user's lower leg. A body pedestal composed of a base is arranged on the upper part of the base, and a back cradle and a thigh cradle are pivotally attached to the base so that the base can be tilted up and down.
A back raising mechanism for raising and lowering the back support with respect to the base, a thigh raising mechanism for raising the thigh support with respect to the base, and these back raising mechanism and thigh A link mechanism that interlocks and links the raising and lowering mechanism, and a drive mechanism that drives the link mechanism;
Thigh raisably mechanism, based on a swing arm to defeat caused the femoral cradle with freely disposed rocking on the base, the distal end portion of the rocking arm from the front end side of the thigh cradles the femoral cradle is erected by swinging the end side,
The link mechanism connects the connecting body crank-connected to the back raising mechanism so as to be reciprocally movable to the thigh raising mechanism, and reciprocates the connecting body while raising the back support by the back raising mechanism. After raising the thigh cradle with the thigh raising / lowering mechanism, lie down, connect the back raising mechanism and the coupling body, or connect the thigh raising mechanism and the coupling body, or reclining bed, characterized by being configured to so that can change any of the length from the connection position between the connecting member and the back raisably mechanism to the connection position of the connecting member and the thigh raisably mechanism.

Images