JP2011224254A - Standing assisting chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a standing assisting chair enabling a user to smoothly and stably perform all the processes from sitting to sanding up.SOLUTION: The standing assisting chair 1A includes: a base plate 2A; a pair of right and left support legs 4, 5 upright provided on both ends of the base plate 2A; and a seat plate 3A which is arranged to be movable up and down within a predetermined range of a vertical direction by being urged upward by an urging means while forming a seat surface 30 on the upper surface side between the support legs 4, 5. The chair 1A is used to assist the user to stand up by an urging force of the seat plate 3A. The urging means is formed in such a way that constant load springs 7a. 7b, 7c, 7d constituted by winding strip-like metal plates 71, 72, 73, 74 are arranged and pulled down on the upper parts of the support legs 4, 5 on right and left sides and front ends of the strip-like metal plates 71, 72, 73, 74 are each fixed to both ends on right and left of the seat plate 3A, and the seat plate 3A is suspended and supported so that the seat surface 30 may be in a substantially parallel state. Thus, a uniform support force is exhibited for a user at all the positions such as a mid-position of descent, a lowest position, amide-position of ascent and a highest position of the seat plate 3A.

Description

  The present invention relates to a standing support chair for assisting a physically handicapped person or an elderly person with weak legs and legs to stand up from a sitting posture, and in particular, to smoothly perform all processes from sitting to standing. The present invention also relates to a standing auxiliary chair that can be stably operated.

  A standing auxiliary chair that assists the operation by lifting the seating surface with an urging means when standing up from a sitting posture is well known as described in Japanese Patent No. 252943 and Japanese Patent Application Laid-Open No. 2005-131091. As the urging means, the former one uses a gas spring and the latter one uses a coil spring, so that it is easy to stand up from a seating surface of 30 to 40 cm in height.

  On the other hand, in the case where the seat surface stands from a seat chair type that is close to the floor surface, a greater force is required than in the case where the seat surface stands on the seated seat surface. Japanese Patent No. 90034 proposes a seat-chair type that, when standing up from a sitting posture, lifts the seat surface with a compression coil spring to the height of a normal sitting chair and assists the standing operation.

  In addition, this sitting chair type stand-up auxiliary chair tends to be difficult not only to stand but also to sit because the seat surface is close to the floor, while the seat surface is supported from below by the biasing means. However, it is highly useful in that the knee can be bent slowly and the seating operation is facilitated.

  However, the standing auxiliary chair described in the above-mentioned patent document uses a gas spring or a coil spring as an urging means for lifting the seating surface, so that the urging force (elastic repulsive force) is a high seating surface position. Therefore, it is difficult to perform a smooth and safe seating operation and standing operation.

  In addition, since the urging force is strongest at the lowest position of the seating surface, even if there is no willingness to stand up, depending on the movement of the user, the seating surface can move up and down and lack stability. Since the urging force is the weakest at the highest position, if the user relies too much on the seating surface in the middle and lower back posture, the body cannot be supported and the situation becomes unstable.

Japanese Patent No. 252943 JP 2005-131091 A Japanese Patent Publication No. 7-90034

  An object of the present invention is to solve the above-described problems, and it is an object of the present invention to make it possible to smoothly and stably perform all the processes from a sitting operation to a standing operation for a standing auxiliary chair.

  Therefore, the present invention provides a substrate disposed on the floor surface side, a pair of left and right support legs standing on both ends of the substrate and having an elbow rest surface formed on the upper surface, and a seat on the upper surface side between the support legs. A seat plate that is urged upward by a predetermined urging means while forming a surface and is arranged so as to be movable up and down in a predetermined range in the vertical direction. In the standing assistance chair for assisting, the urging means is arranged such that a constant load spring formed by winding the belt-like metal plate is disposed on the left and right support legs, and the tip of the belt-like metal plate is hung down on both left and right sides of the seat plate. It is assumed that the seat plate is supported in a state where the seat surface is substantially horizontal, and the support force is uniform for the user throughout the lowering position, the lowest position, the rising position, and the highest position of the seat board. It is characterized by that.

  In this way, the urging means for urging the seat plate upward is used to horizontally support the seat plate with a constant load spring, and the fishing support force that does not vary throughout the entire process from the seating operation to the start of operation. By providing a uniform support force to the user with (biasing force), it is easy to perform both sitting and standing operations smoothly and safely, and the seating position and seating surface with the lowest seating surface are the most Even at a high position, the user can easily maintain the posture stability.

  Further, in this standing auxiliary chair, the constant load springs are arranged in total of four on the front side and the rear side on the back side of the elbow rest surface of the left and right support legs, and support the seat plate at four points. With this feature, it is easy to realize a smooth vertical movement of the seat plate while keeping the seat surface horizontal.

  Further, in the above-mentioned standing auxiliary chair, if the seat plate is characterized in that the horizontal state of the seat surface is always maintained by a predetermined horizontal holding means, the stability and use of the seat surface in each situation It will be easy to ensure safety.

  Furthermore, the horizontal holding means is a leg member that supports a seat plate from below by connecting a pair of pipe members so as to be openable and closable like a leg of a folding chair, or the base end side is fixed to the four corners of the seat plate. The seat plate descends through the pulley while supporting the seat plate, then traverses along the board, and after reaching the lower corner side of the seat plate, it rises and the tip side is fixed to the seat plate from below. If it is based on the combination of the several wire for fishing support which becomes, it will become easy to maintain the horizontal state of a seat surface with a simple structure.

  In addition, if the above-mentioned standing auxiliary chair is of a seated chair type, it is possible to easily perform both the standing motion and the seating motion that are more difficult because the sitting posture is lower than the sitting chair. It becomes very convenient for use in Japanese-style rooms.

  According to the present invention in which the seat plate is supported by using a constant load spring as the urging means, the entire process from the sitting operation to the standing operation can be performed smoothly and stably.

It is a perspective view of an embodiment in the present invention. It is a perspective view which shows the operation | movement condition of the seat board in the standing assistance chair of FIG. It is a top view of the state which removed the elbow-placement board of the standing assistance chair of FIG. (A) is sectional drawing which follows the XX line of FIG. 3, (B) is sectional drawing which shows the state which lowered | hung the seat plate of (A). It is a perspective view which shows the application example of the standing assistance chair of FIG. (A) is sectional drawing which shows the other application example of the standing assistance chair of FIG. 4, (B) is sectional drawing which shows the state which lowered | hung the seat plate of (A).

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a perspective view of a standing auxiliary chair 1A according to the present embodiment. This standing auxiliary chair 1A is of a seated chair type, is a board 2A made of a rectangular plate in plan view and placed on the floor surface, and supports 41, 43, 42 and supports 51, A pair of left and right support legs 4, 5 each having an elbow rest surface formed on the upper surface by placing the elbow rest plates 40, 50 horizontally with the upper ends thereof extending in the depth direction. A seat plate 3A made of a rectangular plate in plan view that is supported by a predetermined biasing means so as to be movable up and down while forming a seat surface 30 on the upper surface side between the support legs 4 and 5; The upward urging force by the seat plate 3A exhibits a function of assisting the user's standing operation.

  As urging means for applying an upward urging force to the seat plate 3A, the constant load springs 7a, 7b, 7c formed by winding the belt-like metal plates 71, 72, 73, 74 rich in elastic repulsive force and housing them on the bobbins. 7d, and a strip-shaped metal plate that hangs down from the constant load springs 7a, 7b, 7c, 7d disposed on the back side of the elbow rest surface of the left and right support legs 4, 5 (under the elbow rest plates 40, 50) The front ends of 71, 72, 73 and 74 are fixed to the left and right ends of the seat plate 3A, respectively, and the seat plate 3A is supported at four points with the seat surface 30 in a horizontal state.

  Then, as shown in FIG. 2, the seat plate 3A can be moved up and down within a predetermined range by being supported by the constant load springs 7a, 7b, 7c, and 7d in this way. It exerts a uniform upward urging force (supporting force) for the user throughout the lowest position (sitting position), midway up, and the highest position, and this is a feature of the present invention. Yes.

  That is, in the conventional standing auxiliary chair, a coil spring or a gas spring is used as an urging means for urging the seat plate upward, and the compression start time or extension start time and the most compressed time or the most extended time point. Since the urging force (elastic repulsive force) differs greatly between the two, the upward support force by the seating surface fluctuates greatly, making it difficult to stand up and sit smoothly, and to stabilize when used There was a problem of lack of safety and safety.

  On the other hand, the standing auxiliary chair 1A according to the present embodiment is a constant load spring 7a, 7b, 7c that exerts a uniform urging force (tensile force) at any stage of the extension / retraction process of the belt-like metal plate as the urging means. 7d, the urging force of the seat plate 3A is constant, and both the standing operation and the seating operation are easily performed, and the seat plate 3A is the lowest and the seat plate 3A is the highest. However, it is easy to ensure stability and safety in use by demonstrating a stable support force due to the fishing support force that does not change.

  FIG. 3 is a plan view showing a state in which the elbow support plates 40 and 50 constituting the elbow support surfaces of the support legs 4 and 5 are removed in order to explain the detailed configuration of the standing auxiliary chair 1A. The constant load springs 7a, 7b, 7c, and 7d are rotated by shaft rods 75, 76, 77, and 78 that horizontally pass between the columns 41 and 43, the columns 42 and 43, the columns 51 and 53, and the columns 52 and 53, respectively. Each of the support bars 31 and 32 is pivotally supported so that the front end portions of the band-like metal plates 71, 72, 73, and 74 extend in the left-right direction on the front side and the rear side on the lower surface side of the seat plate 3A. It is fixed to belt-like support plates 33 and 34 with both end sides extending in the front-rear direction, and the seat plate 3A is supported at four points on both end sides.

  It is recommended that these constant load springs 7a, 7b, 7c, and 7d have the same set load (torque strength) because they can easily realize a smooth vertical movement while keeping the seat surface 30 horizontal. In addition, it is recommended that the total of these set loads is a predetermined level less than the user's weight (preferably 60 to 90%) from the viewpoint of smooth seating operation and ensuring safety.

  For example, when the weight of the user is around 50 kg, the constant load springs 7a, 7b, 7c, 7d (40 kg for four pieces) with a set load of 10 kg are suitable, but the set load according to the weight of the user By changing the constant load springs 7a, 7b, 7c, and 7d to a certain degree weaker and adding auxiliary springs of appropriate strength, the entire set load can be changed. Also good.

  Further, as shown in FIG. 4 (A), the standing auxiliary chair 1A has a horizontal holding means 6 formed by combining pipe members 61 and 62 in the shape of a folding chair leg, and between the substrate 2A and the seat plate 3A. The seating surface 30 is supported so as to support the seat plate 3A from below, so that the level of the seating surface 30 is maintained.

  In the horizontal holding means 6, one pipe member 61 is pivotally supported on the upper surface of the substrate 2A by a holding metal fitting 80a so that the upper end side can be raised and lowered, and the upper end side is supported on the lower surface side of the seat plate 3A. The other pipe member 62 is pivotally supported by the holding bracket 80c on the lower surface of the seat plate 3A and the lower end side is supported by the slide holding portion 22 on the upper surface side of the substrate 2A. These central portions are connected to each other in an X-shape when viewed from the front by a shaft rod 80e so that they can be opened and closed.

  Therefore, as shown in FIG. 4 (B), the horizontal holding means 6 changes the height while the line connecting the X-shaped upper ends of the pipe members 61 and 62 is kept horizontal. The seating surface 30 of the supported seat plate 3 is always maintained in a horizontal state while performing expansion and contraction operations up and down while supporting this from below according to the up and down motion.

  FIG. 5 shows an application example of the above-mentioned standing auxiliary chair 1A. The legs 44, 45, 54 and 55 are respectively extended from the back of the four corners of the substrate 2A, and the seating plate 3A of the standing auxiliary chair 1A is used. The height of the seat surface 30 is raised to a height of about 35 cm from the floor surface, and the standing auxiliary chair 1B is formed as a sitting chair type. Thus, even if the seating surface 30 is raised, the function similar to the standing auxiliary chair 1A described above can be exhibited.

  6A is a longitudinal sectional view showing another application example of the standing auxiliary chair 1A shown in FIG. 4, and instead of the horizontal holding means 6 configured in a folding chair type, wires 910, 920, 930, 1C shows a standing auxiliary chair 1C using a horizontal holding means in which 940 (wires 920, 940 are not shown) and pulleys 91, 92, 93, 94 (pulleys 92, 94 are not shown) are combined. .

  That is, after descending via pulleys 91, 92, 93, 94 while supporting the seat plate 3A in a state where the base end side is fixed to different four corner sides (support plates 33, 34) in the seat plate 3B. It traverses along the lower surface of the substrate 2B, reaches the lower side of the adjacent corner side of the seat plate 3A, and then extends upward so that the tip side is fixed to the end portion side of the seat plate 3B (support plates 33, 34) from below. The fishing support wires 910, 920, 930, and 940 are used as horizontal holding means, and the horizontal state of the seating surface 30 is always maintained in the same manner as the horizontal holding means 6 described above.

  In this case, the fishing support wires 910, 920, 930, and 940 descend through the pulleys 91, 92, 93, and 94, cross the lower side of the substrate 2B that forms a space on the lower surface side, and are adjacent to the left side. The tip is fixed to the end portion side (support plates 33, 34) of the seat plate 3A after extending to the side, and is regulated from above and below so that the four corners of the seat plate 3A have the same height. Yes.

  Although the illustrated standing auxiliary chair 1C is of a seated chair type, it goes without saying that a leg may be provided in the same manner as the standing auxiliary chair 1B of FIG. Further, in common with the above-mentioned standing auxiliary chairs 1A, 1B, and 1C, the seat plate 3A is not limited to a flat plate shape, and the upper portion may be a cushion shape, and further, a backrest is attached. There may be.

  As described above, with regard to the standing assistance chair, the present invention makes it possible to smoothly and stably perform all the processes from the sitting operation to the standing operation.

  1A, 1B, 1C Standing auxiliary chair, 2A, 2B substrate, 3A, 3B seat plate, 4, 5 support legs, 6 horizontal holding means, 7a, 7b, 7c, 7d constant load spring, 30 seat surfaces, 71, 72, 73 74 Metal strip, 91, 92, 93, 94 Pulley, 910, 920, 930, 940 Wire for fishing support

Claims (6)

  A base plate disposed on the floor surface side, a pair of left and right support legs standing on both ends of the base board and having an elbow rest surface formed on the upper surface, and a seat surface formed on the upper surface side between the support legs And a seat plate that is urged upward by a predetermined urging means and arranged to be movable up and down in a predetermined range in the vertical direction, and supports the user's standing operation with the upward urging force of the seat plate. In the auxiliary chair, the urging means includes a constant load spring formed by winding the belt-like metal plate and disposed at the upper part of the left and right support legs so that the front end portions of the belt-like metal plate are on both left and right sides of the seat plate. Each seat is fixed and supports the seat plate in a substantially horizontal state, and is uniform for the user throughout the lowering position, the lowest position, the rising position, and the highest position of the seat board. Standing auxiliary chair, characterized by its supportive ability.   A total of four constant load springs, two on the front side and the rear side on the back side of the armrest surface of the left and right support legs, are provided to support the seat plate at four points. Item 3. The standing auxiliary chair according to item 1.   The standing support chair according to claim 1 or 2, wherein the seat plate is always maintained in a horizontal state by a predetermined horizontal holding means.   4. The upright stand according to claim 3, wherein the horizontal holding means comprises a leg member in which a pair of pipe-like members are connected to a leg of a folding chair so as to be openable and closable to support the seat plate from below. Auxiliary chair.   The horizontal holding means is fixed to the four corners of the seat plate, and descends through pulleys while supporting the seat plate, then traverses along the substrate, and adjacent corners on the seat plate. The standing auxiliary chair according to claim 3, wherein the standing auxiliary chair is a combination of a plurality of wires for fishing support, which ascend after reaching the lower side and have the distal end fixed to the seat plate from below. .   The standing auxiliary chair according to claim 1, 2, 3, 4, or 5, wherein the chair is of a seated chair type.

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