JP2009247628A - Reclining device of back-region support frame in bed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To retain a comfortable posture by supporting the lumbar region of a raised body to a locking state and preventing an upper half body from being deviated downward on a mattress when raising the back-region support frame in a bed frame having the reclining back-region support frame. <P>SOLUTION: The back-region support frame 3 raised/reclined on the bed frame 1 by a rod body 12 vertically turned by a motor 11, is provided with arm pieces 7 and 7 turned in the front/rear direction, on both sides of the lengthwise intermediate part of the back-region support frame 3, and lumbar region pushing-up bar 8 attached between the arm pieces 7 and 7. The arm pieces 7 and 7 are operatively connected to the rising/reclining movement of the back-region support frame 3 to turn back and forth, when rising, the lumbar region pushing-up bar 8 is made to project from the back-region support frame 3, the lumbar-region support part in the mattress 16 is curvedly deformed by a projecting portion 16a and the projecting portion 16a supports the lumbar region of the body to the locking state. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a reclining device for a back support frame in a bed, and more particularly to a reclining device provided with a mechanism that can stably support a waist when the back support frame stands up.

  Conventionally, a back support frame and a leg support frame are arranged on a bed frame and a mattress is placed on these frames. A bed that can easily raise the upper body by being configured is widely known. For example, as described in Patent Document 1 and Patent Document 2, an arm member is provided at the front end portion of the back surface of the back support frame. The base end side of the arm member is connected to driving means such as a hydraulic cylinder, and the driving means is operated to rotate the arm member in the vertical direction so that the back support frame is raised and lowered. A bed has been developed. A bed is also known in which the leg support frame is also configured to be bendable upward in a mountain shape so that the leg of the body is supported while being bent from the knee.

Japanese Patent No. 3,407,962 JP 2003-24393 A

  The above-mentioned back support frame performs the up-and-down motion while supporting the back of the body from the waist to the shoulder, but when standing up, the upper body is loaded on the waist and the buttocks slide on the leg side on the mattress. The waist part moves from the lower end of the back support frame to the leg support frame side while moving, causing a displacement toward the mat part side that supported the buttocks, so that the waist part is pressed against the mat side. There was a fear that it might be painful because it was an unstable standing posture curved in a forward bending state. For this reason, after standing up, the upper body is lifted by stretching both hands on the mattress and the waist is placed along the lower end of the back support frame. There was a problem that it was difficult.

  In addition, even when the upper body is supported from the waist to the shoulder on the mattress part on the standing back support frame, the entire upper body load is directly applied from the waist to the buttocks on the mattress. Therefore, it is difficult not only to maintain this posture for a long time, but also due to the load, the hip part slips to the leg part side on the mattress as described above, and the waist part shifts to the mattress part side that supported the buttocks part. There was a problem that it was easy to be unstable standing posture.

  The present invention has been made in view of such problems, and the object of the present invention is to actively support the lumbar part by a simple mechanism when the back support frame is standing up and after standing up. In a bed that suppresses the movement to the buttocks side and reduces the burden on the waist, and can keep the upper body in a stable position and in a stable position on the mattress part on the back support frame The present invention provides a reclining device for a back support frame.

  In order to achieve the above object, a reclining device for a back support frame in a bed according to the present invention comprises a leg support frame and a back support frame that can be raised and lowered as described in claim 1, In the middle of the length of the back support frame, there is a waist push-up bar that can be moved in and out from the frame on both sides of the back support frame toward the front side of the back support frame in conjunction with the up and down movement of the back support frame. It is characterized by being arranged.

  In the reclining device for the back support frame in the bed configured as described above, the invention according to claim 2 is such that the upper end portions of the link members are pivotally pivotable in the front-rear direction on both sides of the intermediate portion in the front-rear length direction of the back support frame. The link member is configured to rotate in the front-rear direction with the upper end pivoting portion as a fulcrum in conjunction with the undulation operation of the back support frame, and the arm piece is rearward on the rear surface of the link member. The waist push-up bar is attached so that it can be projected and retracted from the middle part in the longitudinal direction of the back support frame by the longitudinal movement of the link member between the tip parts of both side arm pieces. .

  Further, the invention according to claim 3 is provided with a housing for rotating the back support frame up and down by driving the motor in the lower part on both sides of the bed frame on both sides of the back support frame. In addition, the base end link piece is pivotally attached to both side frame portions of the bed frame in the vicinity of the front end of the base end pivot attachment portion of the back support frame so as to be rotatable in the front-rear direction, and the front end of the base end link piece is connected to the intermediate link. The lower end portion of the link member having an arm piece provided with a waist push-up bar is pivotally attached to the upper end portion of the intermediate link piece via the piece, and the base end is interlocked with the undulation movement of the back support frame by the housing The link member is moved back and forth through the lens piece and the intermediate link piece so that the arm piece provided with the waist push-up bar protrudes from the middle part of the back support frame.

  In the invention according to claim 4, the head support frame is pivotably attached to the tip of the back support frame, and the front end of the housing is rotated up and down by a motor drive on the back of the head support frame. The back support frame is raised and lowered in conjunction with the raising and lowering motion of the head support frame that rises and falls by the operation of the housing.

  According to the first aspect of the present invention, the intermediate portion in the longitudinal direction of the back support frame is connected to the front side of the back support frame from between both side frame portions of the back support frame in conjunction with the undulation operation of the back support frame. Since the waist push-up bar that can be raised and lowered is arranged, when the back support frame is erected, the mattress where the waist push-up bar is pushed out to the front side of the back support frame and the body waist is placed A convex part that supports the waist part can be formed by bending and deforming the part into a mountain shape toward the waist part, so that the waist part is supported in a locked state by this convex part, and the upper body becomes a mattress on the back support frame. It is possible to reliably prevent the body from being bent downward or to bend forward, and to maintain a comfortable standing posture for a long time in a stable and good posture.

  Further, when the back support frame is laid down from the standing state, the lumbar push-up bar is retracted and the above-mentioned convex part of the mattress supporting the lumbar part disappears, and it is possible to sleep without receiving any sense of incongruity.

  According to the second aspect of the present invention, the upper ends of the link members are pivotally attached to both sides of the intermediate portion in the longitudinal direction of the back support frame so as to be pivotable in the front and back directions. It is configured to rotate in the front-rear direction with the upper end pivoting portion as a fulcrum in conjunction with the undulation operation, and an arm piece is integrally projected rearward on the rear surface of the link member. The waist push-up bar that can be projected and retracted from the middle part in the longitudinal direction of the back support frame by attaching the link member in the longitudinal direction is attached between the front ends of the arm pieces. A link member provided on the back of the waist in conjunction with the movement projects from the back support frame and is connected to the arm piece integrally provided on the link member by a waist push-up bar so that the back of the body waist Pushing up the mattresses portion, it is possible to form the convex portions pressed against along the back of the waist by the mattress portion.

  Therefore, during the standing of the back support frame, it is possible to form the convex portion of the mattress portion whose protruding height is gradually increased by the operation of the waist push-up bar. The upper body that is supported and drowned in the back support frame can be raised smoothly while restraining the upper body from shifting downward due to the load, and in the standing state, the protruding height is maximized. The waistline is supported by the convex part of the mattress part where the height is increased, and the hips are surely prevented from slipping to the leg side and the body being bent forward, and as described above, the posture is stable and good. Can hold a comfortable standing posture for a long time.

  Furthermore, when the back support frame is laid down from the standing state, the waist is supported by the protrusion of the mattress formed by the waist push-up bar while the waist push-up bar is retracted, and the upper body is in the back It is possible to lie down while restraining downward displacement along the support frame. Further, when the back support frame falls down to the horizontal state, the convex part of the mattress by the lumbar push-up bar disappears, and it is possible to go to bed with an easy supine posture.

  According to the invention according to claim 3, the housing for turning the back support frame up and down by rotating in the vertical direction by motor drive is disposed at the lower part on both sides of the bed frame at the back of both sides of the back support frame, A base link piece is pivotally attached to both side frame portions of the bed frame in the vicinity of the front end of the base end pivoting portion of the back support frame so as to be pivotable in the front-rear direction, and the tip of the base end link piece is interposed via an intermediate link piece. Since the lower end part of the link member having the arm piece provided with the waist push-up bar is pivotally attached to the upper end part of the intermediate link piece, when the back support frame is erected by the above-mentioned frame, it interlocks with this erection operation Then, the link member is rotated rearward so that the waist push-up bar connected between the arm pieces protrudes from the back support frame with a protrusion degree corresponding to the standing degree of the back support frame. Bets can be, such pushing up the mattress by hip lifting bar by a simple structure, it is possible to form a convex portion for supporting the lumbar region as described above.

  According to the fourth aspect of the present invention, the head support frame is pivotally attached to the tip of the back support frame so that it can be raised and lowered. Because the back support frame is raised and lowered in conjunction with the raising and lowering movement of the head support frame that rises and lowers by the operation of this chassis, the head support frame is pushed up by the rotation of the chassis. However, the mattress portion, which is placed on the back support frame from the head support frame and supports the upper body, can stand up together with the back support frame, and the head supports as the upright angle of the back support frame increases. The standing angle of the part support frame is also increased, and the head can be easily held in an easy posture.

  Next, a specific embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a simplified perspective view of the entire frame of the bed in a state where the back support frame is erected, and FIG. The head support frame 2, the back support frame 3, the buttocks support frame 4, and the leg support frame 5 are arranged on the bed frame 1 formed in a vertically long rectangular frame shape with the head support frame 2 at the front end side ( The mattress 16 mounting frame is formed by sequentially connecting the front end side).

  The head support frame 2 is formed by refracting and forming both side frame portions 2b and 2b having a short length toward the back support frame 3 side on both side ends of the tip frame portion 2a which is long in the lateral direction. The end of 2b is pivotally attached 20 and 20 to the front end of both side frame portions 3a and 3a of the back support frame 3 so as to be rotatable in the undulation direction, and is laterally connected between the end portions of both side frame portions 2b and 2b. The frame portion 2c is connected, and both side portions of the lateral connection frame portion 2c and both side portions of the front end frame portion 2a are connected by vertical connection frame portions 2d and 2d.

  The back support frame 3 is formed in a rectangular frame shape by connecting the front end portion facing surface and the base end facing surface of the both side frame portions 3a, 3a by lateral connecting frame portions 3b, 3c, respectively. The intermediate portions in the longitudinal direction of the frame portions 3a, 3a are connected by intermediate connecting frame portions 3d, 3d arranged in parallel in the front-rear direction at a predetermined interval, and further, the front side lateral connecting frame Both side ends of the portion 3b and the front (front end) intermediate connection frame portion 3d are connected by the vertical connection frame portions 3e, 3e and the rear intermediate connection frame portion 3d and the base end side (rear end) The central part of the horizontal connection frame part 3c on the part side) is connected by the central vertical connection frame part 3f.

  Then, the base end portions (rear end portions) of the both side frame portions 3a of the back support frame 3 are slidably mounted in the longitudinal direction on the center portions of the both side frame portions 1a and 1a of the bed frame 1 in the longitudinal direction. The butt support frame 4 is pivotally attached 21 and 21 to the front end portions (front end portions) of both side frame portions 4a and 4a. The buttocks support frame 4 is formed in a rectangular frame shape by connecting the front end portion facing surfaces and the base end facing surfaces of the both side frame portions 4a, 4a by lateral connecting frame portions 4b, 4c, respectively. A reinforcing frame portion is provided as necessary.

  The leg support frame 5 is divided into a front half frame portion 5A and a rear half frame portion 5B. Both side frame portions 5a, 5a of the front half frame portion 5A and both side frame portions 5b of the rear half frame portion 5B. The front end (tip) of 5b is pivotally attached 23 and 23 so as to be refracted in an inverted V shape (mountain shape) with each other, and the body leg is refracted from the knee and the front half frame 5A The front ends of both side frame portions 5a, 5a are pivotally attached to the rear ends of both side frame portions 4a, 4a of the butt support frame 4 so as to be raised and lowered. The front half frame portion 5A and the rear half frame portion 5B are formed in a horizontally-long rectangular frame shape by a horizontal connecting frame portion connecting the both side frame portions 5a, 5a and 5b, 5b. A vertical connection frame 5c is integrally provided at the center in the width direction of the rear half frame portion 5B.

  As shown in FIG. 3, the upper ends of the link members 6 and 6 having a predetermined length are pivotally attached to the base ends of the vertical connection frames 3e and 3e of the back support frame 3 so as to be pivotable in the front-rear direction by pins. 24, 24, and an arm piece 7 refracted in an L-shape projecting rearward at the center in the longitudinal direction on the rear surface of the link member 6, and these both side arm pieces 7, 7 A waist push-up bar 8 is connected between the front (upper end) facing surfaces. When the link member 6 is rotated backward with the upper end pivoting portion 24 as a fulcrum, the waist push-up bar 8 protrudes from the intermediate connecting frame portion 3d to the front side of the back support frame 3, and when the link member 6 is rotated forward, the waist portion The push-up bar 8 is configured to retreat from the intermediate connection frame portion 3d to the back side of the back support frame 3. The operation of the waist push-up bar 8 is configured to be performed in conjunction with the undulation operation of the back support frame 3 as will be described later.

  As shown in FIGS. 7 to 9, the lower ends of the link members 6 and 6 projecting integrally from the arm pieces 7 and 7 are back-supported via an intermediate link piece 9a longer than the link member 6, respectively. The base end (upper end) is pivotally attached to the inner side surface of both side frame portions 1a and 1a of the bed frame 1 in the vicinity of the front of the pivotally attached portion 21 of the frame 3 and the buttocks support frame 4 so as to be pivotable in the front-rear direction. 25 is connected to the distal end (lower end) of the proximal end link piece 9b. Specifically, a long hole 10 is provided in the upper end portion of the intermediate link piece 9a, and the lower end portions of the link members 6 and 6 are pivotally attached 26 to the long hole 10 and the lower end portion of the intermediate link piece 9a. Is pivotally attached 27 to the distal end of a base end link piece 9b shorter than the intermediate link piece 9a. The long hole 10 is provided so that the rotation of the link member 6 and the intermediate link piece 9a can be carried out smoothly without difficulty and is pivotally attached by a pin with a circular hole. It may be a structure.

  Further, a motor 11 is mounted on the lower surface of the bed frame 1 at the back of the base end portion of the back support frame 3, and the frame portions 3a, 3a are provided below the side frame portions 3a, 3a of the back support frame 3. The casings 12 and 12 having a fixed length are disposed along the base end portions of the casings 12 and 12 and connected to a rotating shaft 11a that reciprocally rotates by driving of the motor 11, and the rotating The shaft 11a is rotated in the vertical direction by rotation. A base end portion of a support arm 12a projecting upward with respect to the length direction of the housing 12 is pivotally attached to the front end portions of the housings 12 and 12 so as to be rotatable in the front-rear direction. At the same time, the tip of the support arm 12a is pivotally attached to the back surface of the vertical connection frames 2d and 2d on both sides of the head support frame 2, and the heads 12 and 12 are rotated in the undulation direction to support the head. The back support frame 3 is configured to be raised and lowered via the frame 2.

  Further, brackets 13 and 14 project downward from the center vertical connection frame 3f of the back support frame 3 and the center vertical connection frame 5c of the rear half frame portion 5B of the leg support frame 5, respectively. The brackets 13 and 14 are connected by a line 15 such as a wire. Then, a mattress 16 is placed on a frame composed of a head support frame 2, a back support frame 3, a butt support frame 4, and a leg support frame 5 disposed on the bed frame 1. Make up bed.

  With this configuration, as shown in FIG. 4, in the state where the back support frame 3 is lying on the bed frame 1 horizontally, the motor 11 is driven and both sides are driven by the rotational force of the rotating shaft 11a. As shown in FIGS. 5 to 6, the head support frame 2 is lifted when the housings 12, 12 are raised from the lying state, and the front end portion together with the front end portion of the mattress on the head support frame 2. The head that is received by the head is also lifted together, and the upper body supported by the back support frame 3 by the lifting of the head is formed between the base end of the back support frame 3 and the tip of the buttocks support frame 4. The pivoting portion 21 is supported as a fulcrum and gradually rises with the back support frame 3 through the mattress 16.

  Further, as the back support frame 3 rises, the link members 6 and 6 pivoting 24 at the upper ends of the back support frame 3 on both side vertical connection frame portions 3e and 3e in a suspended state are pulled upward. It is done. At this time, when the back support frame 3 is in a horizontal state, as shown in FIG. 7, the intermediate link piece 9a pivotally attached to the lower end of the base end link piece 9b is moved forward from the base end link piece 9b. Since the waist push-up bar 8 attached between the arm pieces 7 and 7 projecting from the link members 6 and 6 is restrained by the load from the mattress 16 side. When the back support frame 3 starts to stand up, the link member 6 does not rotate in the front-rear direction, and the back support frame is held at a certain angle obliquely downward toward the front with respect to both side frame portions 3a of the back support frame 3. 3 is lifted together.

  When the link member 6 is lifted integrally around the base end pivoting portion 21 of the back support frame 3, the pivoting portion 26 between the link member 6 and the intermediate link piece 9a is centered on the pivoting portion 21. The base end pivoting portion 25 of the base end link piece 9b pivoting on the intermediate link piece 9a is provided at a position ahead of the base end pivoting portion 21 of the back support frame 3. Therefore, if the link member 6 is further raised from a certain small angle at which the link member 6 is lifted integrally with the back support frame 3, for example, about 30 degrees, the link member 6 and the intermediate link piece 9a are The pivoting portion 26 moves toward the proximal pivoting portion 25 of the proximal link piece 9b, that is, in a direction to reduce the distance between the pivoting portions 24 and 25, and the intermediate link piece 9a and the proximal link are moved. The piece 9b is not refracted into a V shape in a direction in which the angle formed by these link pieces decreases. Therefore, the link member 6 and the intermediate link piece 9a connected in a square shape are rotated in the direction of opening with the pivoting portion 26 as a fulcrum.

  By this rotation, the link member 6 and the intermediate link piece 9a are connected to the base end pivot part 25 of the base end link piece 9b and the upper end pivot part 24 of the link member 6 via the base end link piece 9b. The link member 6 protrudes from both side link members 6 and 6 by pivoting in a direction in which the link member 6 tends to be in a vertical state downward with the upper end pivoting portion 24 as a fulcrum. The waist push-up bar 8 supported between the arm pieces 7 and 7 is gradually forcedly projected toward the front side of the back support frame 3.

  Due to the protrusion of the waist push-up bar 8 from the back support frame 3, the portion of the mattress placed on the back support frame 3 that corresponds to the waist of the body is pushed up from the back side so that the mattress portion becomes the waist. A convex portion 16a that is curved toward the back and presses against the back of the waist is formed by the curved portion.

  As the standing angle of the back support frame 3 increases, the protruding amount of the waist push-up bar 8 protruding from the back support frame 3 to the front side increases, and therefore the height of the convex portion 16a of the mattress 16 increases. The convex portion 16a supports the waist of the body in a locked state, and can prevent the upper body supported on the back support frame 3 from shifting downward on the mattress while standing.

  Further, even after the back support frame 3 stands, the lumbar portion is supported by the convex portion 16a so that the upper body can be kept in an easy posture while preventing the upper body from being bent forward. The frame 2 can also stand upright to support the head in a stable state. A link mechanism comprising a link member 6, an intermediate link piece 9a, and a proximal end link piece 9b so that the waist push-up bar 8 operates in a direction protruding from the back support frame 3 simultaneously with the start of standing of the back support frame 3. May be configured.

  On the other hand, as the back support frame 3 stands up, the tip of the bracket 13 projecting from the central vertical connection frame 3f at the lower end of the back support frame 3 moves forward, and the bracket 13 and the rear frame 5B of the leg support frame 5 A pivoting portion 23 in which the cable 15 connected between the brackets 14 projecting from the central vertical connection frame 5c is pulled and the front and rear frame portions 5A and 5B of the leg support frame 5 are connected to each other by the pulling force. It can be refracted in a mountain shape from the top to the top and can be supported in a state where the leg is bent from the knee. The front and rear frame portions 5A and 5B of the leg support frame 3 are refracted and extended by, for example, a separately installed hydraulic cylinder without being interlocked with the standing support frame 3 standing up. May be. Further, it may be formed on a flat leg support frame that cannot be bent without being divided into the front and rear frame parts 5A and 5B.

  Next, by rotating the rotating shaft 11a of the motor 11 in the reverse direction and rotating the housing 12 in the direction of lying down, the back support frame 3 is gradually raised from the standing state to the intermediate position as shown in FIG. When lying down, the waist push-up bar 8 is gradually retracted toward the front of the back support frame 3 while the link member 6 and the intermediate link piece 9a are folded forward toward each other. Even during the retraction of the waist push-up bar 8, the back support frame 3 forms the mattress convex portion 16a by the waist push-up bar 8 while the back support frame 3 is tilted from the standing state to a predetermined angle. Even during 3 lying down, the waist can be supported in a locked state.

  When the back support frame 3 is further lowered from this state, the waist push-up bar 8 is in a state of being sunk downward from the front side of the back support frame 3, but since the standing angle of the back support frame 3 is small, the upper body is It can be in a supine state without shifting. In the above embodiment, the link mechanism such as the intermediate link piece 9a and the proximal end link piece 9b is provided by attaching the waist push-up bar 8 between the arm pieces 7 and 7 protruding from the both side link members 6 and 6. The back support frame 3 is configured so as to project and retract from the back support frame 3 in conjunction with the up-and-down movement of the back support frame 3, but without being connected to the back support frame 3, for example, the length direction of the back support frame 3 It is also possible to adopt a structure in which the both side end surfaces are supported by a support piece, and this support piece is connected to and supported by a hydraulic cylinder or other drive mechanism that operates in conjunction with the undulation operation of the back support frame.

The simplified perspective view of the whole flame | frame of a bed. The side view. The enlarged perspective view of the principal part. The side view of the bed in the state where the back support frame was laid down. The side view which shows a standing start state. The side view of the state which stood the back part support frame to the intermediate position. The side view which shows the action | operation mechanism of a waist | hip | lumbar part raising bar. The side view in the state where the waist push-up balm was lifted upward. The side view of the state which the waist | hip | lumbar part raising bar protruded from the back part support frame.

Explanation of symbols

1 Bed frame 2 Head support frame 3 Back support frame 4 Bottom support frame 5 Leg support frame
5A first half frame
5B Rear frame 6 Link member 7 Arm piece 8 Lumbar push-up bar
9a Intermediate link piece
9b Base link piece
10 Long hole
11 Motor
12 body
16 Mattress

Claims (4)

  In a bed frame having a leg support frame and a back support frame that can be raised and lowered, both side frames of the back support frame are interlocked with the raising and lowering operation of the back support frame in the middle part of the length of the back support frame. A reclining device for a back support frame in a bed, characterized in that a waist push-up bar that can be moved in and out from the space toward the front side of the back support frame is provided.   The upper end of the link member is pivotally attached to both sides of the middle portion of the back support frame in the longitudinal direction so that the link member can pivot in the front-rear direction. The arm piece is integrally projected rearward on the rear surface of the link member, and the back portion is supported by the back and forth movement of the link member between the tip portions of the both side arm pieces. The reclining device for a back support frame in a bed according to claim 1, further comprising a waist push-up bar that can be projected and retracted from an intermediate portion in the longitudinal direction of the frame.   At the back of both sides of the back support frame, a frame is arranged at the lower part of both sides of the bed frame to move up and down by driving the motor to undulate the back support frame, and the base end pivoting portion of the back support frame The base end link piece is pivotally attached to the both side frame portions of the bed frame in the front vicinity of the bed so as to be rotatable in the front-rear direction, and the front end of the base end link piece is connected to the upper end portion of the intermediate link piece via the intermediate link piece. A link member having an arm piece provided with a waist push-up bar is pivotally attached to the lower end portion of the link member, and the link member is linked to the undulation movement of the back support frame by the housing via the proximal end piece piece and the intermediate link piece. The arm piece provided with the waist push-up bar by moving back and forth is configured to protrude and retract from the middle part of the back support frame. Reclining device of the back support frame in the head.   A head support frame is pivotally attached to the tip of the back support frame so that it can be raised and lowered, and a front end of a housing that is rotated up and down by a motor drive is connected to the back of the head support frame. The back support frame of the bed according to claim 1, 3 or 3, wherein the back support frame is raised and lowered in conjunction with the raising and lowering operation of the head support frame that rises and falls. Reclining device.

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