JP2007014459A - Reclining chair for assisting standing-up motion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reclining chair for assisting standing-up motion which is converted into any attitude of a reclining attitude or standing-up motion assisting attitude by one driving source and efficiently transmits a force. <P>SOLUTION: In the reclining chair 11 for assisting the standing-up motion, a rocking lever 17 is pivoted by the lower side of a seat surface member 13A (13), a base 18 below the seat surface member 13A (13) is pivoted with one end side 21a of a telescopic means 21, the other end side 21b of the telescopic means 21 is pivoted by the rocking lever 17 so that the rocking lever 17 is rocked, a space between the rocking lever 17 and a backrest member 12A (12) is interposed with a backrest association means 25 so that the telescopic means 21 is retracted to tilt the backrest member 12A (12) backward, and a space between the rocking lever 17 and the seat surface member 13A (13) is interposed with a seat surface association means 30 so that the telescopic means 21 is extended to tilt the seat surface member 13A (13) forward. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a chair capable of relatively changing the posture of a backrest member, a seating surface member, and the like, and more specifically, any posture from a normally used chair-type posture to a reclining posture or a standing assistance posture. It also relates to a reclining standing chair that can be changed.

  As an example of the reclining standing chair as described above, a “posture variable chair” is disclosed in Patent Document 1 below.

The general configuration of the posture changing chair will be described below.
The posture variable chair includes a seat plate, a backrest, and a footrest plate. Furthermore, each of the left and right sides of the posture changing chair is provided with a pair of connecting plates, and a rotating shaft is horizontally mounted between the pair of connecting plates so as to be integrally formed. The said rotating shaft is comprised integrally as a rotation center of a large gearwheel.
The motor, which is the only drive source of the posture changing chair, is attached to one side of the pair of connecting plates and is engaged with a large gear via a pinion. And the said connection plate, a rotating shaft, a large gear, and a motor are connected with the 1st connection rod and the 2nd connection rod so that it can raise integrally with respect to a base.

  The posture changeable chair is configured to be convertible to either a reclining posture or a posture capable of assisting standing up by one driving source with the above-described configuration.

  However, the posture variable chair has the following three difficulties.

  The first difficulty is that when the posture changing chair is in a reclining posture, almost all members such as the motor, the pair of connecting plates, and the large gear correspond to the movable portion side, and To rise. Since the motor needs to be driven in order to raise the member on the movable part side including its own weight, a motor having a large capacity capable of exhibiting sufficient output torque is required.

  However, if a motor with a large capacity is selected, the motor itself provided on the movable part side becomes heavy, so this is not a fundamental solution. Similarly, in order to increase the reduction gear ratio of the large gear, it is necessary to configure the large gear, and since the large gear is also a member on the movable part side, it is still not a fundamental solution.

  The second difficulty is that the above-described variable posture chair directly raises the seat plate when considering the mounting angle between the large gear and the motor and the mounting angle of the motor to the connecting plate. It must be said that the power required for is small.

  That is, it can be said that the output torque of the motor has a large force acting in the front-rear direction of the posture changing chair, and the transmission efficiency of the force is poor due to the structure.

  Finally, the third difficulty is that the posture changing chair mainly uses two types of large connecting plates and large gears as members for transmitting the drive of the motor. It is also configured to be large in order to ensure safety, and includes a guide rail. For this reason, the posture changing chair has a complicated configuration and has a large number of parts, and thus requires a cost. Therefore, either the reclining posture with one motor or the posture capable of assisting standing up can be used. It is necessary to manufacture parts that are not general-purpose products such as large gears and connecting plates in order to realize conversion to the position of the machine, and the great merit of using a single motor that can realize the function with a simple configuration will be lost. Have a fear.

  In addition, the armrest part in the posture changeable chair does not tilt forward together with the seat surface part when the seat surface part is tilted forward so that standing support is possible, so when a seated person tries to stand up, he stands up with his hand on the armrest part. It is difficult to support the standing motion.

Japanese Utility Model Publication No. 06-84942

  In view of the above, an object of the present invention is to provide a reclining stand or a standing support chair capable of performing reclining that can efficiently transmit force, with a single drive source capable of realizing either a reclining posture or a posture that can assist standing.

The reclining stand-up auxiliary chair of the present invention comprises a seat surface member and a backrest member and is configured in a chair-type posture, and a reclining stand-up that is configured to be reclinable or freely changeable to a stand-up assist posture. Auxiliary chair, pivoting a swing lever on the lower side of the seat member, and pivoting one end side of the expansion and contraction means on a base having the seat member below. The other end of the expansion / contraction means is pivotally attached to the swing lever so that the swing lever can swing, and the expansion / contraction means contracts between the swing lever and the backrest member. Then, the backrest member is configured via backrest interlocking means so that the backrest member tilts backward. When the telescopic means is extended between the swing lever and the seating surface member, the seating surface member tilts forward. Through the bearing surface interlocking means. Characterized in that it was.
Further, the reclining stand-up auxiliary chair has the pivoting portion with the seat member in the swing lever set as a fulcrum portion, and the pivoting portion with the one end side of the expansion / contraction means Set the force point part, set the pivoting part with the backrest interlocking means as a backrest action point part, set the part of the seating surface interlocking means as a seating surface action point part, the fulcrum part, The force point part, the backrest action point part, and the seating surface action point part, the distance between the fulcrum part and the force point part is the distance between the fulcrum part and the backrest action point part, and the fulcrum The swing lever is configured in a relative positional relationship that is longer than the distance between the portion and the seating surface acting point.

  In the reclining upright chair, the seat surface interlocking means is composed of an elastic member capable of absorbing an impact, and the seat surface action point portion can be pushed up on the swing lever so that the seat surface member can be pushed up. It is a site | part which opposes the back surface of a seat surface member, Comprising: It is preferable to comprise in a back site | part rather than the said fulcrum part.

  Further, the reclining upright auxiliary chair includes a foot support member capable of supporting a foot portion on the front side, and a parallel link mechanism device pivotally attached to the back side of the foot support member is provided on the front side of the seat surface member. In addition, the parallel link mechanism device and the swing lever can be coupled via the foot support interlocking means so that the foot support member protrudes forward when the telescopic means is contracted.

  In addition, the reclining stand-up auxiliary chair may be configured as an armrest member that can be tilted forward integrally with the seating surface member on both the left and right sides of the seating surface member.

  According to the first aspect of the present invention, it is possible to change the reclining posture of the reclining standing chair or the standing assistance posture to any posture by extending or contracting one stretching means.

  Therefore, the reclining stand-up auxiliary chair according to claim 1 does not require a complicated configuration, and further, for example, can be configured without requiring a complicated part such as a special gear. Miniaturization can be realized and the cause of failure can be reduced.

  Further, the base side (for example, a drive source) of the expansion / contraction means is pivotally attached to the base. That is, since the movable part side can be made lightweight, and the expansion / contraction means pushes up the seat surface member from below, the expansion / contraction means expands when changing to the standing-up assisting posture, so that the seat surface member Can be pushed up firmly.

  That is, the reclining stand-up auxiliary chair according to claim 1 can perform posture conversion efficiently with a small force.

  According to the invention of claim 2, the fulcrum part, the force point part, the backrest action point part, and the seating surface action point part are respectively configured in the swing lever in the relative positional relationship described above. Thus, since the lever principle can be used, the posture can be changed more efficiently.

  According to the third aspect of the present invention, for example, the seating surface member can be pushed up directly by the seating surface acting point portion of the swing lever without using an unnecessary link configuration. By configuring the seating surface acting point portion on the rear side with respect to the fulcrum portion of the swing lever, the seat surface member tilts forward in the rotation direction of the swing lever when the expansion / contraction means is extended. The direction can be substantially matched.

  That is, by pushing up through such a rocking lever, the force for extending the telescopic means can be changed to the force for tilting the seat surface accurately to assist standing.

  According to the invention according to claim 4, the reclining stand-up auxiliary chair can also be provided with a footrest member, and the footrest member is also the backrest member by using the swinging member and the expansion / contraction means described above, And it can be made to interlock | cooperate with the said seat surface member, can be protruded ahead according to each attitude | position, or can be evacuated. That is, even if the foot support member is provided, the foot support member can be made to function without separately having a complicated configuration and control.

  According to the fifth aspect of the present invention, the armrest member tilts forward integrally with the seating surface member, so that when standing up, a person can firmly ground the hand to the armrest member. Can stand while hanging. Therefore, the person who was seated can stand up in a stable state without placing a burden on the legs and hips.

  An embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 and 2, the reclining standing chair 11 (hereinafter simply referred to as the standing chair 11) according to this embodiment includes a backrest member 12A and a seat member 13A. It is structured into a mold.

  Further, the standing auxiliary chair 11 includes a foot support member 14A that protrudes forward and can support the foot portion on the front end side of the seating surface member 13A when in the reclining posture. When the standing support chair 11 is in the chair-type posture, the foot support member 14A is retracted at a portion corresponding to the rear side of the calf of a person seated in a form of hanging on the front end side of the seat member 13A (FIG. 1). FIG. 2).

In addition, a pair of side plates 15 </ b> A configured in a substantially trapezoidal shape is disposed in the portion corresponding to both sides in the width direction of the standing auxiliary chair 11. The pair of side plates 15A are integrally formed by attaching side plate frames 15 provided in the inside to the left and right sides of the seat member 13A. Furthermore, an armrest member 16 is provided at an upper end portion of the side plate 15A, that is, a portion corresponding to an elbow portion of a seated person.
On the upper surface of the armrest member 16, on the front side in the length direction, a switch corresponding to a standing assistance posture or a posture change to a reclining posture is disposed (not shown). By turning the switch ON / OFF, a seated person can select a change to any of the above postures.

  Further, the backrest member 12A, the seating surface member 13A, and the footrest member 14A all have a flexible surface made of a cushion material, but the inside thereof, as shown in FIG. A back frame 12, a seat surface frame 13, and a footrest frame 14 made of steel square material are provided.

  The backrest frame 12 is configured as shown in FIGS. 4 (a) and 4 (b). Furthermore, the backrest frame 12 has a swing lever coupling bracket 12a for connecting with a swing lever 17 described later facing downward at each portion spaced a predetermined width from the center in the width direction at the lower end. Are welded. The lower part 12b of the backrest frame 12 is pivotally attached to the rear end side 13c in a state of protruding downward with respect to the seat frame 13 (see FIG. 3).

  Further, as shown in FIGS. 5A and 5B, the seat frame 13 is a rear end side, and on both sides in the width direction, a base for connecting to a base 18 described later. The base connecting bracket 13a is welded downward.

  On the other hand, on the front end side of the seat surface frame 13, a total of four foot receiving portion connecting brackets 13b for connecting to the side of the foot receiving member 14A are projected in a forward direction and a downward direction, respectively. ing.

  The footrest frame 14 includes a parallel link mechanism device 22 on the back side thereof, and is connected to the seat frame 13 via the parallel link mechanism device 22 (see FIG. 3).

  Specifically, as shown in FIG. 6 and FIG. 3, the parallel link mechanism device 22 includes a pair of parallel link mechanism portions 22a formed by connecting the main link 22aa and the slave link 22ab in series. The base link side of the main link 22aa is connected by a connecting bar 22b so as to be integrated with each other.

  Further, a pivot lever connecting bracket 22c on the foot support side is fixed to a substantially middle portion in the length direction of the connecting rod 22b. On the base side of the main link 22aa, a seat frame connecting portion 22d that can be connected to the seat frame 13 is projected.

  The seat surface frame 13 and the parallel link mechanism device 22 are connected to the foot support portion connecting bracket 13b of the seat surface frame 13 by pivotally attaching the seat surface frame connecting portion 22d of the parallel link mechanism device 22. ing.

Subsequently, the internal configuration on the lower side of the standing auxiliary chair 11 with respect to the seat frame 13 or the configuration for interlocking the backrest frame 12, the seat frame 13 and the footrest frame 14 is mainly described. This will be described below.
As shown in FIG. 7, the standing auxiliary chair 11 includes a base 18 that can be grounded to the ground at the lower end. The base 18 is provided with upright columns 18a on the left and right sides in the width direction on the front end side. The seat frame connecting bracket 18b for connecting to the seat frame 13 is welded to the rear side surface of the upper end of the column 18a.
FIG. 7 is a plan view of a lower part with respect to the seat frame 13.

  Further, as shown in FIGS. 7 and 8, the bracket 18b for seating surface frame connection is formed on the base on the seating frame 13 via the first support rod 19a and the second support rod 19b. 18 is connected to the connecting bracket 13a. The seat frame 13 can move in a state of being restrained by the respective tracks drawn by the first support rod 19a and the second support rod 19b (see the phantom line in FIG. 8).

  Furthermore, the base side 21a of the expansion / contraction means 21 is pivotally attached to the front end side of the base 18 in the center in the width direction (see FIGS. 3 and 7). The expansion / contraction means 21 is provided with an expansion / contraction part 21b formed using a ball screw on the distal end side, and further, the base side 21b of the expansion / contraction means 21 is provided with an AC motor, and the motor shaft of the AC motor is coupled with a coupling. (Not shown). The expansion / contraction part 21b is configured to be extendable / contractible with respect to the base side 21b by driving the AC motor.

  Moreover, as shown in the enlarged view of the main part in FIG. 9 and FIG. With the swing lever 17 facing, the swing lever 17 is pivotally attached to the seat frame 13 so as to be swingable on the lower side.

  The pair of swing levers 17 and 17 are formed in the same shape in the form of a boomerang when viewed from the front. The pivoting portion of the swing lever 17 with respect to the seat surface frame constituting portion 13f is formed at a portion corresponding to a corner portion of the upper end portion in the boomerang shape when the standing auxiliary chair 11 is in the chair-type posture. Since the pivot attachment portion (see an enlarged view of the main part in FIG. 3) is a portion that becomes a fulcrum of the swing of the swing lever 17, this portion is set as the fulcrum portion 17a.

  Further, when the standing auxiliary chair 11 is in the chair-type posture, the tip of the expansion / contraction part 21b of the expansion / contraction means 21 is pivotally attached to the corner of the swing lever 17 at the rear end. The part of the swing lever 17 that is pivotally attached to the tip of the expansion / contraction part 21b is a part where the expansion / contraction means 21 applies a force to the swing lever 17, so that the part is set as the force point part 17b. .

  The swing lever 17 is connected to the backrest frame 12 via a backrest connecting rod 25. Specifically, when the standing auxiliary chair 11 is a chair type, one end portion in the length direction of the backrest connecting rod 25 is pivotally attached to a corner portion of the lower end portion of the swing lever 17 so that the backrest is supported. The other end of the connecting rod 25 in the length direction is pivotally attached to the swing lever connecting bracket 12a at the lower end of the backrest frame 12 (see FIGS. 3 and 9).

  Here, a portion where one end in the length direction of the backrest connecting rod 25 in the swing lever 17 is pivotally attached is set as a backrest acting point portion 17c.

The swing lever 17 is connected to the footrest frame 14 via a footrest connecting rod 26.
Specifically, one end in the length direction of the footrest connecting rod 26 is pivotally attached to a substantially middle equivalent portion of the swing lever 17 between the fulcrum portion 17a and the backrest acting point portion 17c. is doing. Further, the other end portion of the footrest coupling rod 26 is pivotally attached to the seat surface frame coupling portion 22d provided in the horizontal link mechanism device 22 of the footrest member 14A (FIGS. 3, 6, and 9). reference).

  Here, a portion where one end of the footrest connecting rod 26 in the swing lever 17 is pivotally attached is set as a footrest operating point portion 17d.

Further, when the standing auxiliary chair 11 is a chair type, the swing lever 17 is opposed to a predetermined portion on the lower surface of the seat frame constituting portion 13f and is positioned between the support portion 17a and the force point portion 17b. An elastic member 30 is provided at the site to be operated (see FIGS. 3 and 9).
Here, the part which the said elastic member 30 has is set to the raising part 17e.

  Incidentally, the elastic member 30 can be made of, for example, rubber, urethane, etc., and the rocking lever 17 can be pushed up so that the seat frame 13 can be pushed up with the pair of rocking levers 17 being connected. It is welded.

  Further, the force point portion 17b, the backrest action point portion 17c, the footrest action point portion 17d, and the push-up portion 17e described above have a ratio of the length to the fulcrum portion 17a of about 3: 2: 2: 1, respectively. The swing lever 17 is arranged so that the length between the force point portion 17b and the fulcrum portion 17a is the longest.

The backrest connecting rod 25 is pivotally attached to the surface on which the pair of swing levers 17 are not opposed to each other. On the other hand, the footrest connecting rod 26 is pivoted between the pair of swing levers 17 (see FIG. 9).
Thereby, when the swing lever 17 swings, the backrest connecting rod 25 does not interfere with the footrest connecting rod 26 and the telescopic portion 21b.

The standing assistance chair 11 in the present embodiment is assumed to have the above-described configuration, and hereinafter, functions and effects exhibited when the standing assistance chair 11 is changed from the chair shape to another posture will be described.
First, when the standing auxiliary chair 11 according to the present embodiment adopts the reclining posture from the above-described chair-type posture, the telescopic portion 21b in the telescopic means 21 is contracted.
At this time, as shown in FIG. 10, the force point portion 17b of the swing lever 17 is pulled in the contraction direction of the expansion / contraction portion 21b of the expansion / contraction means 21, so that the swing lever 17 is centered on the fulcrum portion 17a. Rotates counterclockwise.

If the rocking lever 17 rotates counterclockwise as described above, the backrest action point 17c of the rocking lever 17 is moved downward in the forward direction through the backrest connecting rod 25 and the lower end of the backrest frame 12. The backrest frame 12 tilts backward (see the enlarged view in FIG. 10) because the swinging lever coupling bracket 12a is pulled.
On the other hand, the footrest frame 14 is gradually projected forward through the parallel link mechanism device 22 as the footrest action point 17d rotates.

  Finally, in the reclining posture, as shown in FIGS. 11A and 11B, the backrest portion can be tilted backward in a range of 20 ° to 80 °, for example, and the footrest member 14A. The rear end side is arranged at substantially the same height as the seat surface member 13A, and the front side is slightly inclined forward with respect to the seat surface member 13A.

As described above, the standing assistance chair 11 in the present embodiment changes the postures of the backrest member 12 and the footrest member 14 to postures corresponding to the reclining posture in conjunction with the contraction operation of the one expansion / contraction means 21. be able to.
Moreover, the distance between the fulcrum part 17a and the force point part 17b in the swing lever 17 is the distance between the backrest action point part 17c and the fulcrum part 17a, and the footrest action point part 17d and the fulcrum part 17a. It is formed to be longer than the distance between. By using the swing lever 17 as described above, the backrest frame 12 and the footrest frame 14 can be efficiently interlocked based on the contraction force of the expansion / contraction means 21 using the principle of leverage. .

  Next, the function and effect of the standing assistance chair 11 in this embodiment when changing from the initial chair-type posture to a posture capable of standing assistance will be described. Next, the expansion / contraction part 21b in the expansion / contraction means 21 is gradually extended from the initial state. As a result, the force point portion 17b of the swing lever 17 is pushed up by the distal end portion of the telescopic portion 21b, so that the swing lever 17 tries to rotate clockwise around the fulcrum portion 17a.

  When the swing lever 17 rotates as described above, first, the push-up portion 17e (elastic member 30) of the swing lever 17 facing the seat frame 13 contacts the seat frame configuration portion 13f. However, since the expansion / contraction part 21b further extends, as shown in FIG. 12, the seat frame forming part 13f is pushed up via the push-up part 17e.

  At this time, as described above (see FIG. 8), the seat surface frame 13 is restrained by the first support rod 19a and the second support rod 19b. The face frame 13 draws a trajectory that tilts forward and assists the rising motion.

  Further, the standing auxiliary chair 11 in this embodiment is pivotally attached in a state where the expansion / contraction means 21 is substantially erected on the lower side with respect to the seat member 13A. For this reason, the expansion / contraction part 21b in the expansion / contraction means 21 can extend in the direction in which the seat surface member 13A is pushed up directly from the lower side of the seat surface toward the rear side and obliquely upward.

  For this reason, it is possible to push up the seating frame 13 very strongly, and further, by pushing up the seating frame 13 via the swinging lever 17, the direction in which the seating frame 13 is pushed up is changed. It is possible to push up after converting to the clockwise rotation direction.

  In other words, the rotation direction of the swing lever 17 substantially coincides with the direction in which the seat frame 13 tilts forward, so that the seat frame 13 can be further pushed up.

  Further, the backrest frame 12 is inclined while maintaining a substantially vertical position with respect to the substantially same seating surface frame 13 as that of the chair type. This is because the backrest action point portion 17c pushes the lower end portion of the backrest frame 12 to the rear side via the backrest connecting rod 25 as the swing lever 17 rotates clockwise.

  For this reason, since the backrest frame 12 also tilts forward in conjunction with the seat frame 13 during the conversion to a posture that can support standing, the backrest member 12A further supports the back of the person trying to stand up. Can help with standing up.

  On the other hand, as for the foot support portion, as the swing lever 17 rotates clockwise, the horizontal link mechanism device 22 is pulled backward via the foot support connecting rod 26. The evacuation state can be maintained.

  In addition, the trajectory in which the seat member 13A tilts forward at the time of conversion to the standing assist posture not only simply tilts forward, but also draws a trajectory that tilts forward while moving forward to some extent. For this reason, the seating surface member 13A can draw a trajectory that is in line with the actual rising operation of tilting forward while pushing the person who is going to stand up forward.

  At the same time, since the seat member 13A tilts forward while drawing such a trajectory, the horizontal link mechanism device 22 is not excessively pulled down to the lower side of the seat member 13A by the footrest connecting rod 26. There is no possibility that the horizontal link mechanism device 22 interferes with the expansion / contraction means 21 or the like during the standing assist posture.

  The armrest member 16 also tilts forward integrally with the seating frame 13 when the seating frame 13 tilts forward. In other words, the seated person takes a middle waist posture in the process of standing up, but even in such a posture, the armrest member 16 is inclined at an inclination angle at which the person who is going to stand up easily touches. For this reason, for example, even when an elderly person such as an elderly person stands upright, the armrest member 16 can easily receive weight. Therefore, it becomes easy to stand up using the reaction force received from the armrest member 16, and can stand up in a balanced manner.

  As described above, the standing-up auxiliary chair 11 basically has one motor and one corresponding to it in any posture change from a chair-type posture to a standing-up posture or a posture capable of standing up. This can be done by the expansion / contraction means 21.

In order to return from the reclining posture or the standing assistance posture to the chair-type posture, the expansion / contraction means 21 basically performs the reverse operation to the above.
Incidentally, the standing auxiliary chair 11 includes a rubber member 15a capable of absorbing an impact at a lower end portion of the side plate frame 15 that abuts against the base 18 (see an enlarged view of a main part in FIG. 8). Therefore, the seat member 13A, the side plate 15A, and the like that are integrally tilted forward with respect to the base 18 do not collide with the base 18 vigorously when returning to the chair-type posture.

Further, in the correspondence between the above-described embodiment and the configuration of the present invention, the base 21b side of the expansion / contraction means 21 of this embodiment corresponds to one end side of the expansion / contraction means 21 of the present invention. The distal end portion of the expansion / contraction means 21b of the expansion / contraction means 21 corresponds to the other end side of the expansion / contraction means 21,
The backrest connecting collar 25 corresponds to the backrest interlocking means,
The push-up part 17e corresponds to the bearing surface action point part,
The footrest connecting rod 26 corresponds to the footrest interlocking means,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained as described above.

The external view of the reclining stand-up auxiliary chair which concerns on a present Example. The side view of the standing assistance chair which can be reclining which concerns on a present Example. Explanatory drawing which shows the internal structure of the standing-up auxiliary chair which can be reclining which concerns on a present Example. The rear view (a) of the backrest frame of the reclining stand-up auxiliary chair which concerns on a present Example, AA sectional drawing (b) in Fig.4 (a). The top view (a) of the seating surface frame of the reclining stand-up auxiliary chair which concerns on a present Example, AA sectional drawing (b) in Fig.5 (a). Explanatory drawing which shows the principal part in the front side of the standing support chair which can be reclining which concerns on a present Example. The top view which shows the principal part structure below with respect to a seat surface frame. Explanatory drawing which shows the structure of the reclining stand-up auxiliary chair which concerns on the present Example seen from the AA cross section in FIG. Explanatory drawing which shows the structure of a rocking lever vicinity. Explanatory drawing which shows the internal structure of the standing assistance chair which can be reclined based on a present Example at the time of a reclining attitude | position change. The external view (a) and side view (b) of the reclining stand-up auxiliary chair which concern on the present Example which takes a reclining attitude | position. Explanatory drawing which shows the internal structure of the reclining stand support chair which concerns on a present Example at the time of standing support posture change. The external view (a) of the reclining stand-up auxiliary chair which concerns on the present Example which takes a stand-up assistance posture, and a side view (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Reclinable standing auxiliary seat chair 12A ... Backrest member 13A ... Seat surface member 14A ... Foot rest member 17 ... Swing lever 16 ... Armrest member 17a ... Supporting point part 17b ... Power point part 17c ... Backrest action point part 17d ... Foot support action point portion 17e ... Push-up portion 18 ... Base 22 ... Extension / contraction means 21a ... Base portion in extension / contraction means 22 ... Parallel link mechanism device 25 ... Backrest connection rod 26 ... Foot support connection rod 30 ... Elastic member

Claims (5)

A reclining standing chair that comprises a seat surface member and a backrest member, is configured in a chair-type posture, and can be reclined, or can be converted into a standing assistance posture, and can be reclined.
A swing lever is pivotally attached to the lower side of the seat member,
One end portion side of the expansion / contraction means is pivotally attached to a base having a lower side with respect to the seat member, and the other end side of the expansion / contraction means is swingable so that the swing lever can swing. Pivot on the moving lever,
It is configured via backrest interlocking means so that when the telescopic means is contracted between the swing lever and the backrest member, the backrest member tilts backward,
A reclining stand-up auxiliary chair configured through seating surface interlocking means so that when the telescopic means is extended between the swing lever and the seating surface member, the seating surface member tilts forward. In the swing lever, the pivoting part with the seat member is set as a fulcrum part, the pivoting part with one end side of the expansion / contraction means is set as a force point part, and the backrest interlocking means Set the pivoting part with the backrest action point, set the part of the seating surface interlocking means to the seating action point part,
The fulcrum part, the force point part, the backrest action point part, and the seating surface action point part, the distance between the fulcrum part and the force point part is the distance between the fulcrum part and the backrest action point part, The reclining stand-up auxiliary chair according to claim 1, wherein each of the swing levers is configured in a relative positional relationship so as to be longer than a distance between the fulcrum portion and the seating surface acting point portion. The seat surface interlocking means is composed of an elastic member capable of absorbing an impact,
2. The seating surface acting point portion is a portion of the swing lever that opposes the back surface of the seating surface member so as to be able to push up the seating surface member, and is configured at a rear side portion of the fulcrum portion. Or the reclining stand-up auxiliary chair according to claim 2. A foot support member capable of supporting the foot portion is provided on the front side,
When the parallel link mechanism device pivotally attached to the back side of the foot support member is pivotally attached to the front side of the seat member, the parallel link mechanism device and the swing lever are contracted by the telescopic means. The reclining stand-up auxiliary chair according to any one of claims 1 to 3, wherein the footrest member is connected via footrest interlocking means so as to protrude forward. The reclining stand-up auxiliary chair according to any one of claims 1 to 4, wherein an armrest member that can be tilted forward together with the seat surface member is formed on both right and left sides of the seat surface member.

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