JP3795057B1 - Chair with exercise assist function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair having an exercise aid function that can be used as a chair and can perform appropriate exercise by repeating the operation while assisting the user to sit on or stand up on the chair. provide.
A link spring device 20 having a link mechanism formed by combining a plurality of link members 201 to 204 crossed in an X shape, and connecting shafts 19a and 19b positioned so as to face each other. The link spring device 20 is formed on the bottom surface of the chair 1 by connecting the members at a plurality of locations with elastic members 220.
[Selection] Figure 1

Description

  The present invention relates to a chair having an exercise assisting instrument function, and more specifically, a chair having an exercise assisting instrument function including a link spring device having a link mechanism configured by connecting a plurality of X-shaped link members in series. About.

  Japan's aging is progressing rapidly, and it is said that one in six is an elderly person over 65 years old. In general, many elderly people suffer from weakness of the hips and joint pain. For this reason, there is a vicious circle in which daily life is gradually inconvenienced, and the inconvenience causes further away from exercise and further reduction in motor function. Therefore, various exercise equipments have been developed and provided in order to solve such problems.

  In view of these circumstances, the present inventor has developed an exercise assisting device that can easily perform bending and stretching exercises that match the physical strength of the user and that is highly safe, and has developed an international application (International Publication No. 03/084210 pamphlet ( In addition to patent document 1)), a patent application (Japanese Patent Application No. 2005-166657) was filed in order to provide a smaller and more compact exercise aid.

  However, elderly people who can exercise flexion and extension using such exercise assistive devices are limited to those who are relatively healthy and not weakened in energy and physical strength, and many elderly people do such exercise. The current situation is that you can't even do anything. Such elderly people spend all day sitting on a chair as their living standards improve. Sitting on a chair for a short period of time is one of the simplest ways to rest, but if it takes a long time, the back and waist may be adversely affected and adversely affected. . Sitting on a chair for a long time is very painful for healthy people, especially in the case of elderly people whose physical freedom is difficult.

  In such a situation, various proposals have been made to eliminate such a burden on the elderly. For example, Japanese Patent Application Laid-Open No. 8-670 (Patent Document 2) discloses a chair having a function of assisting the standing up operation when standing up from the chair. Specifically, when the seated person sits with his feet on the floor, the seated board is raised in a horizontal state, and when the seated person's buttocks level is equal to or higher than the knee level, the seat board Is lifted, and the seated person can easily stand up by raising the seat plate in front of the pivot centered on the front.

  In addition, as such a chair, the seat is supported by a link mechanism or the like so as to be movable up and down, and a spring means such as a gas spring is connected to the seat and the seat is raised by the spring force. It has been known. For example, in Japanese Patent Application Laid-Open No. 8-112314 (Patent Document 3), a seat and a base are connected by a link that rotates in conjunction with the up-and-down movement of the seat, and expands and contracts in conjunction with the rotation of the link. And a spring means for applying a repulsive force in the direction of raising the seat portion is connected to the link, and the distance between the line of action of the repulsive force of the spring means and the rotation center of the link is changed to A stand-up auxiliary chair provided with a rotational force adjusting means for adjusting the rotational force of the link due to the repulsive force is disclosed.

  Japanese Unexamined Patent Application Publication No. 2004-267410 (Patent Document 4) discloses an inexpensive height-adjustable chair that can be manually adjusted by the user himself / herself. Specifically, a seat portion on which a user sits, a pantograph-like lifting mechanism that supports the seat portion so as to be lifted and lowered, a height adjustment mechanism that is driven when the height of the lifting mechanism is adjusted, and a lifting mechanism The height adjustment mechanism is a speed reduction means that slides and drives one link arm on the seat part side of the elevating mechanism to adjust the height, and is a friction member in a steady state. A speed reducing means for supporting the link arm so as not to slide by force, a speed increasing means connected to the speed reducing means for increasing and transmitting a manual driving force to the speed reducing means, and an operation lever connected to the speed increasing means. And an operation lever provided to extend to the side of the seat portion, so that the user sitting on the seat portion operates the operation lever and the driving force effectively increases the speed increasing means. Is transmitted to the deceleration means via the When the height of the seat is adjusted and the height adjustment operation is not performed, the link of the lifting mechanism is supported by the speed reduction means by the friction force of the speed reduction means, and the height of the seat surface is adjusted. It is to be maintained.

International Publication No. 03/084101 Pamphlet JP-A-8-670 Special opening and closing 8-112314 gazette JP 2004-267410 A

However, the chairs disclosed in Patent Documents 2 and 3 described above all have a function of assisting the user in getting up, and the action of the user sitting on the chair or standing up is regarded as exercise. I don't see the idea of repeating the movements and performing moderate exercise.
Further, the chair disclosed in Patent Document 4 simply allows the user to adjust the height position, and does not show any viewpoint of exercise.

  On the other hand, the exercise assisting tool disclosed in Patent Document 1 and Japanese Patent Application No. 2005-166657 is an exercise assisting tool for assisting the user in performing bending and stretching exercises, and sits on it for a long time. It wasn't something to spend.

  By the way, the inventor of the present invention recalls a link spring device in which the entire link mechanism works as if it is a single spring, rather than simply moving the link mechanism up and down as in the prior art. A patent application was filed to provide a link spring device capable of elastically supporting an object placed on the upper portion of the link mechanism.

  Therefore, by using this link spring mechanism, it can be used as a chair, and it is possible to perform an appropriate exercise by repeating it while assisting the user to sit on or stand up on the chair. An object is to provide a chair having an exercise assisting device function.

  Another object of the present invention is to provide a chair that is small and compact, and has an exercise assisting device function that can easily adjust the auxiliary force and adjust the lift position.

In order to solve the above-mentioned problem, the invention according to claim 1 assists the operation by applying a force to push up the user's buttocks from below when the user sitting on the chair moves up from the chair. A link spring device having a link mechanism formed by combining a plurality of link members crossed in an X-shape in a chair having an exercise assisting device function that is arranged so that the link mechanisms are opposed to each other. The link spring device formed by connecting the connecting shafts to each other by elastic members at a plurality of locations is disposed on the bottom surface of the chair , and the link spring device includes an upper limit stopper and / or a lower limit stopper, Thus, the length of the lift stroke and / or the height of the chair can be adjusted .

  A force that pushes upward by the link spring device acts on the seat of the chair, but when the user sits on the chair, the link spring device is pushed down by the weight of the user and sits at a predetermined height position Be able to. On the other hand, when the user sitting on the chair moves up, the weight (weight) applied to the seat portion decreases, so that the seat portion is lifted so as to support the user's buttocks by the force of the link spring device. As a result, the user can easily perform the standing-up motion, so that the user feels that his / her legs and legs are strengthened and induces the consciousness of himself / herself to stand up. Needless to say, this movement is a bending / extending movement, and by repeating this movement, the rising movement gradually becomes difficult.

  In order to solve the above-mentioned problems, a second aspect of the present invention is the chair provided with the exercise assisting device function according to the first aspect, wherein the link spring device links the two link plates in an X shape. A link unit is formed by forming a member and arranging a pair of link members so as to face each other, connecting intersections of link members by a central axis, and connecting end portions of link plates by a connection shaft. Forming a link mechanism that can be expanded and contracted by connecting a plurality of connecting shafts on the upper side of the link unit and a connecting shaft on the lower side of the other link unit. Thus, it is characterized in that it is constructed by laying an elastic member that urges the connecting shafts positioned at two or more locations in the direction of extending the link mechanism. As a result, the link spring device acts as a single spring as a whole and also serves as a structure that supports the seat portion of the chair.

In order to solve the above-mentioned problems, a third aspect of the present invention is the chair having the exercise assisting device function according to the first or second aspect , wherein the link spring device includes a lifting spring pressure adjusting mechanism, whereby the chair The ascending / descending pressure is adjustable.

In order to solve the above-mentioned problem, the invention according to claim 4 is a chair having an exercise assisting device function according to any one of claims 1 to 3 , further comprising an armrest, The armrest portion is characterized in that it can be flipped forward.

In order to solve the above-mentioned problem, the invention according to claim 5 is the chair provided with the exercise assisting device function according to claim 4, wherein the armrest is disposed so as to follow up and down of the chair. Features.

In order to solve the above-mentioned problem, the invention according to claim 6 is the chair having the exercise assisting device function according to any one of claims 1 to 5 , wherein when the user moves up, The seat portion is configured to be inclined so as to support the posture of the user while contacting the user's buttocks with a predetermined pressing force.

In order to solve the above-mentioned problem, the invention according to claim 7 is the chair provided with the exercise assisting device function according to any one of claims 1 to 6 , wherein the link spring device is one of the weight of the user. It is characterized by being pushed up with a force of / 2 to 3/4.

In order to solve the above-mentioned problem, the invention according to claim 8 is a chair having the function of assisting exercise according to any one of claims 1 to 7 , wherein the movable range of the link spring device is limited. It is provided with a safety stopper limited to the range, and is provided with a safety stopper that enables safe use as a chair and enables bending and stretching movement within the limited range.

  As described above, according to the chair having the function of assisting exercise according to the present invention, the entire link spring device acts as if it is a single spring and also functions as a structure so that it can support the seat. No support means is required. Therefore, there is an effect that it is possible to provide a chair provided with an exercise assisting device function with a simple mechanism and few failures.

  Moreover, according to the chair provided with the exercise assisting device function according to the present invention, the lifting stroke length and height of the chair and the lifting pressure can be adjusted, so that the bending and stretching exercises suitable for the user's body can be performed. There is an effect that can be done.

  Furthermore, according to the chair provided with the exercise assisting device function according to the present invention, the armrest is configured to reverse forward, so that it can be held in a natural position when standing up and perform a smooth rising motion. There is an effect that can be.

  Hereinafter, a first embodiment of a chair having an exercise assisting device function according to the present invention will be described with reference to the drawings. FIG. 1 is a side view of a first embodiment of a chair having a function of assisting exercise according to the present invention. First, the chair 1 provided with the exercise assisting device function shown in FIG. 1 is generally configured to include a seat portion 10, a link spring device 20, and a pedestal 30.

The seat portion 10 includes a base portion 109, a seat portion 105 disposed on the upper side of the base portion 109, a backrest portion 101 attached via a support column 101a, and an armrest attached via a support column 107a. Part 107.
The backrest portion 101 is attached so as to be slidable in the vertical direction along the support column 101a, and can be fixed at a predetermined height position by the knob 101b.
In addition, an inclination mechanism 105a is provided on the back side of the seat portion 105, which is a portion on which the user sits, and when nobody is seated and no load is applied to the seat portion 105, an elastic mechanism (not shown) is used. As indicated by the phantom line 1, the backrest 101 side of the seat 105 is biased so as to be inclined while being raised. Accordingly, when the user performs an operation of getting up from the chair 1, the seat portion 105 is inclined by an elastic mechanism (not shown) and follows the movement of the user's buttocks. Therefore, since the seat part 105 is always located in the vicinity of the user's buttocks, the user can immediately sit on the seat part 105 even in the middle of the standing-up operation, and safety and safety are ensured.

  The armrest portion 107 is formed having a lower step portion 117b fixed to the support column 107a, and an upper step portion 117a that is movably attached to the upper side of the lower step portion 117b by a hinge 117c. Thereby, the upper stage part 117a can be tilted forward with respect to the hinge 117c (see FIG. 1). Therefore, since the user can put his hand on the upper step portion 117a of the armrest portion 107 which is inverted and protrudes long forward, a smooth rising operation can be performed.

  A link spring device 20 is disposed under the base portion 109. As shown in FIG. 5, the link spring device 20 is generally configured by connecting a plurality of link units 201 to 204 described later, and each link unit 201 to 204 is formed as follows. . That is, as shown in FIG. 4, two link members 211a and 211b formed by crossing two link plates 215a and 215b in an X shape are arranged so as to face each other as a pair, and each link member 211a , 211b, the intersections of the link plates 215a and 215b are connected to each other by a central shaft 217, and the link plates 201 and 215b are connected to each other by the connecting shafts 219a and 219b. To 204 are formed.

  The connection shaft on the upper side of the link unit 202 is shared with the connection shafts 219b and 219b on the lower side of the link unit 201 arranged on the upper side, and the other link units 203 and 204 are connected in the same manner. The shafts 219b and 219b are shared. In this manner, a plurality of link units 201 to 204 are connected in the vertical direction, thereby forming an elastic link mechanism. And the elastic member which urges | biases the connection shafts 219a and 219a and the connection shafts 219b and 219b which are arrange | positioned so that it may respectively oppose in the direction (arrow direction of FIG. 4) of extending a link mechanism in at least two or more places. 220 and 220 are constructed.

  The link plates 215a and 215b are formed, for example, by making a steel plate into an elongated and thin plate shape. Holes 216b and 216b are formed in the vicinity of both ends, and a hole 216a is formed in the center. Yes. Accordingly, the link plates 215a and 215b are provided with holes in at least three places. Of course, the material and shape of the link plates 215a and 215b are not limited to this, and can be formed of an appropriate material having rigidity.

  The central shaft 217 that connects the hole portions 216a of the pair of link members 211a and 211b is formed of a round bar-like member. On the other hand, the connecting shafts 219a and 219b that connect the respective hole portions 216b of the pair of link members 211a and 211b are also configured by round bar-like members. By appropriately adjusting the lengths of the central shaft 217 and the connecting shafts 219a and 219b and the lengths of the link plates 215a and 215b, a stable link spring device 20 having a relatively large mounting area can be obtained. The link spring device 20 can be used. The expansion and contraction of the link spring device 20 can be made smoother by interposing a ball bearing or the like on the central shaft 217 and the connecting shafts 219a and 219b.

  The link mechanism that can be expanded and contracted is formed as described above, and the connecting shafts 219a and 219a and the connecting shafts 219b and 219b that are positioned so as to face the link units 201 to 204 in the horizontal direction. The elastic members 220, for example, a spring, preferably a tension coil spring, are laid on each other so as to be biased in the direction in which the link mechanism is extended (the direction of the arrow in FIG. 5). The elastic member 220 is disposed so as to connect at least two connecting shafts 219a and 219b in the vertical direction. Of course, it is also possible to arrange one or a plurality of elastic members 220 on one connecting shaft 219a, 219a.

  The link spring device 20 formed in this way performs a specific movement not seen in conventional springs. That is, when no object is placed on the upper part of the link spring device 20, a force acts in the direction in which the elastic member 220 pulls the connecting shafts 219a and 219a, so that the shape is extended upward as a whole (see FIG. 5). ).

  When a load is applied to the upper portion of the link spring device 20, the link members 211a and 211b move in a direction in which the connecting shafts 219a and 219a gradually move away from each other against the tensile force of the elastic member 220. When further weight is applied, the height of the link plates 215a, 215b gradually decreases while further expanding. The lower link unit 202 moves in the same manner so as to follow this movement, and further moves in the same manner as the lower link units 203 and 204. At this time, since the link spring device 20 receives the tensile force of the tension spring which is the elastic member 220, when the load is applied to the upper part or released, the entire link spring device 20 is as if it is a single spring. Operates to flexibly accept your weight.

  When the load is further applied, the link spring device 20 is further lowered, but it should be noted that the force to support the load is weakened when the link mechanism is lowered to a certain height position. That is, the link spring device 1 gradually shrinks while supporting a strong force load at a certain height, but when the height is compressed to a predetermined height position, the link spring device 1 is now weaker than the force applied so far. The link mechanism can be compressed by force. In this regard, in the case of a normal push spring, when a load is applied from a state where no load is applied, it can be initially compressed with a small load, but the repulsive force gradually increases as the force is gradually reduced. In this way, the link spring device 1 has a completely opposite effect on the load as compared to the conventional push spring.

This point will be described with reference to FIGS. FIG. 7 is a front view of one link unit of the link spring device 20, and shows a state in which the angle between the link plates is 60 °. At this time, the tension spring as an elastic member installed on the connecting shaft has an initial tension of 0.235, a spring constant of 0.016 kg / mm, and a stroke of 70 to 140 mm. The spring tension is F, the link unit lift is W, the distance between the lower connecting shaft and the central axis is X, and the intersection of the vertical line from the central axis and the line connecting the lower connecting shaft. If the distance from the connecting shaft to one of the connecting shafts is Y, the ascending force W is W = FX / 2Y.
Specifically, the tensile force F is calculated as follows.
F = (2Y−spring free length) × spring constant + initial tension That is, F = (2 × 37.5−70) × 0.016 + 0.235
= 0.315 kg
It becomes.
And ascending force W is W = FX / 2Y,
W = 0.315 × 64.952 / 2 × 37.5
= 0.2728kg
It becomes.
Moreover, if F is set to 5 kg, W will be 4.3301 kg.

  Similarly, when the angles formed by the link plates are 80 °, 100 °, 120 °, and 140 °, the ascending force W is 0.3919 kg, 0.4000 kg, 0.3445 kg, 0, respectively. 2494kg. Thus, it can be seen that the ascending force W gradually increases as the angle between the link plates gradually increases, but gradually decreases after a predetermined angle.

  In this way, the link spring device 20 supports the load applied abruptly at first with a strong force and works so that the force gradually attenuates. Therefore, in addition to the chair having the assisting function assisting device of the present invention, In addition, for example, it can be used as a lifting device or a shock absorber. Further, since the link spring device 20 itself functions as a structure, an object can be placed directly on the upper portion without providing a support mechanism.

  Further, the chair 1 includes an upper limit stopper mechanism 40, a lower limit stopper mechanism 50, and a spring pressure adjustment mechanism 60 for adjusting the vertical movement range. First, as shown in FIG. 12, the upper limit stopper mechanism 40 is provided on a mounting base 401 disposed on the back surface of the base 109, and roughly includes a four-joint link 410 having joints 411 to 414, The rotating shaft 420 is rotatably supported by the bearings 427a and 427b, and a handle 419 that rotates the rotating shaft 420 is included. Intersection 411a of node 411 and node 414 and intersection 411b of node 412 and node 413 of the four-bar link 410 are respectively screwed so as to move in opposite directions in the axial direction by rotation of the rotation shaft 420. It is connected to 421a and 421b. The intersection 411c between the node 411 and the node 412 is fixed to the fixing portion 417 so as not to move, and the intersection 411d between the node 413 and the node 414 which is the diagonal of the intersection 411c is slightly made of hard rubber or the like. A stopper member 425 having elasticity is attached.

  A handle 419 is attached to the rotating shaft 420, and the moving bodies 421 a and 421 b move on the rotating shaft 420 by rotating the handle 419. As a result, when the handle 419 is turned, the moving bodies 421a and 421b move in a direction toward or away from each other. However, since the intersection 411c of the four-node link 410 is fixed, the four-node link 410 has an intersection 411d. Moves so as to extend downward in FIG. The bearings 427a and 427b that rotatably support the rotating shaft 420 are configured to move in the vertical direction in FIG. 12 as the intersection 411d moves, and the four-bar link 410 is formed at a desired position. A fixing mechanism (not shown) for fixing so as not to move is also provided. On the other hand, if the handle 419 is rotated in the opposite direction, the moving bodies 421a and 421b move away from each other, so that the four-bar link 410 contracts and the intersection 411d moves upward in FIG. To do. Thereby, the four-bar link 410 can be fixed at a position indicated by a solid line and a virtual line in FIG.

  On the other hand, as shown in FIGS. 13A and 13B, the mounting base 401 is provided with a guide member 430 having a gap 430a formed in the longitudinal direction thereof. The upper end 219e of the link plate 215a constituting the 211a is slidably attached to the gap 430a of the guide member 430, and the upper end 219f of the link plate 215b is fixed to the attachment base 401. Although not shown, the link member 211b side of the link unit 201 is similarly formed.

  According to the upper limit stopper mechanism 40 having such a configuration, when the handle 419 is turned to operate the four-joint link 410 and the stopper member 425 is fixed at a desired position, the link spring device 20 is moved up and down. The upper end 219e of the link plate 215a that contacts the stopper member 425 in the middle of the ascending process, cannot move any further, and the ascending position of the link spring device 20 is restricted. In this manner, the height position of the seat portion 10 can be adjusted by appropriately adjusting the position of the stopper member 425.

  Next, the lower limit stopper mechanism 50 will be described. As shown in FIG. 14A, two lower limit stopper mechanisms 50 are provided on the mounting base 31 of the base 30. That is, the illustrated lower limit stopper mechanism 50 is generally formed by attaching stopper portions 51 a, 51 b, 51 c having different lengths to the side surface of the cylindrical main body 51 for each direction of an angle of 45 °. . The main body 51 can be rotated in either the left or right direction with the central axis as the rotation center, and the stopper portions 51a, 51b, 51c are link plates of the link member 241a constituting the lowermost link unit 204. It can be fixed at a position facing the connecting shaft 219b attached to the lower side of 245b.

  On the other hand, the lower end 245h of the link plate 245a of the link member 241a is fixed to the mounting base 31. Further, the mounting base 31 is provided with a guide member 530 in which a gap portion 530a is formed in the longitudinal direction thereof, and a lower side end portion 245g of the link plate 245b constituting the link member 241a of the link unit 204 is a guide member. It is slidably attached to the gap portion 530a of 530. Although not shown, the link member 241b side of the link unit 204 is formed in the same manner. Accordingly, if the main body 51 is rotated and fixed so that the stopper portions 51a, 51b, 51c having desired lengths are opposed to the connecting shaft 219b, the link spring device 20 is contracted and lowered to lower the lowermost link unit 204. The connecting shaft 219b attached to the lower end portion 245g of the link plate 245b constituting the contact plate abuts against the stopper portion (the stopper portion 51b in FIG. 14A) and is prevented from further movement. Thereby, the height position of the lower part side of the seat part 10 can be adjusted. In the present embodiment, since the stopper portions 51a, 51b, and 51c are provided at three locations, three-stage height adjustment can be performed. In addition, by cooperating the upper limit stopper mechanism 40 and the lower limit stopper mechanism 50, the seat portion 10 can be fixed at a predetermined height position and used as a normal chair. In this case, a fixing mechanism for the link spring device 20 may be provided separately to stop the operation of the link spring device 20.

  Next, the spring pressure adjusting mechanism 60 will be described. As shown in FIGS. 14 (a) and 14 (b), the spring pressure adjusting mechanism 60 rotates the crankshaft 610 provided on the mounting base 33 on the base 30 and the crankshaft 610, and fixing means (not shown). And a handle 619 provided with the above. As best shown in FIG. 14 (b), the crankshaft 610 has one end of each of the four elastic members 220 attached to a position eccentric from the center of rotation. The opposite end of the elastic member 220 is attached to the connecting shaft 219b. Accordingly, when the handle 619 is turned, the distance between the end position of the elastic member 220 and the end position on the side attached to the connecting shaft 219b changes as the crankshaft 610 rotates. Vary the pull length. Accordingly, the ascending pressure of the link spring device 20 can be adjusted by rotating the handle 619 and fixing it by a fixing means (not shown) at a desired position and appropriately adjusting the strength of the elastic member 220 (FIG. 15 ( a) (b)).

  Next, operation | movement of the chair 1 mentioned above is demonstrated easily. First, the height positions above and below the seat portion 10 are adjusted based on the height and weight of the user. That is, the handle 419 of the upper limit stopper mechanism 40 is turned to operate the four-bar link 410 and fix it at a predetermined position. Further, the main body 51 of the lower limit stopper mechanism 50 is rotated to adjust the desired stopper portions 51a, 51b, 51c so as to face the connecting shaft 219b. Further, the handle 619 of the spring pressure adjusting mechanism 60 is turned to adjust the rising pressure as an assisting force for assisting the bending / extending motion. In this case, it is preferable that the rising pressure of the link spring device 20 is pushed up by a force that is approximately half the weight of the user. This is because if the pressure is lower than that, the assisting force of the user's standing motion is not exhibited so much. However, it may be necessary to adjust the level of the rising pressure according to the strength of the lower limb muscle strength or physical condition of the user. However, even in that case, it is preferable that the maximum rising pressure is 3/4 or less of the weight of the user. This is because if the auxiliary force more than that is applied, the body may be suddenly pushed upward by the repulsive force of the link spring device 20, which is dangerous.

  When the chair 1 is adjusted, the user sits on the seat portion 10 and performs a standing up motion, that is, a bending / extending motion. When the user moves up, the link spring device 20 causes the rising pressure to act on the buttocks of the seat portion 10 to push up the user's body. As a result, the user's standing up operation is assisted and the user can stand up easily. Further, the seat portion 105 is always tilted so as to be positioned near the user's buttocks by the tilt mechanism 105a, so that the seat portion 105 is always positioned near the user's buttocks and the user is in the middle of the rising motion. Even so, it is possible to immediately sit on the seat portion 10 and to perform bending and stretching exercises extremely safely. Needless to say, the chair 1 itself can be used as a chair without performing such bending and stretching movements.

  Next, a second embodiment of a chair having an exercise assisting device function will be described with reference to the drawings. FIG. 16: is a side view in 2nd embodiment of the chair provided with the exercise assistance tool function based on this invention. The basic configuration of the chair 1 having the exercise assisting device function shown in FIG. 16 is substantially the same as the chair having the exercise assisting device function of the first embodiment. The link spring device 20, a pedestal 30, an upper limit stopper mechanism 40 (not shown), and a lower limit stopper mechanism 50 ′ having a mechanism different from that of the first embodiment are configured. In addition, about the structure similar to 1st embodiment, suppose that the same code | symbol as the chair 1 mentioned above is attached | subjected, and description of the part is abbreviate | omitted. 16 to 18, the upper limit stopper mechanism 40 is omitted.

  FIG. 18 shows an enlarged view of the lower limit stopper mechanism 50 ′ provided in the chair 1 in the present embodiment. First, the lower end portion 245h of the link plate 245a of the link member 241a constituting the link unit 204 located at the lowermost portion of the link spring device 20 is fixed to the mounting base 31. In addition, the mounting base 31 is provided with a guide member 530 in which a gap portion 530a is formed in the longitudinal direction, and a lower side end portion 245g of the link plate 245b of the link member 241a constituting the link unit 204 is a guide member. It is slidably attached to the gap portion 530a of 530. A plate-like member 270 is provided at the lower end 245g of the link plate 245b. On the other hand, a plurality of screw hole portions 540 are arranged on the side surface of the mounting base 31 in a line with a predetermined interval. Although not shown, the link member 241b side of the link unit 204 is formed in the same manner. Then, screw members (not shown) are attached to two positions of the screw hole portion 540, and at this time, the plate-like member 270 is positioned between two screw members (not shown). Then, the plate member 270 can appropriately adjust the lower limit position of the link spring device 20 whose movement range is limited by a screw member (not shown). For example, in FIG. 18, when a screw member (not shown) is attached to the screw hole 540 closest to the lower side end 245h of the link plate 245b and the left screw hole 540 adjacent to the left (state of FIG. 18). Then, the movement of the plate-like member 270 is restricted within that range. Then, if a screw member (not shown) is attached to the rightmost screw hole 540 in FIG. 18, the link spring device 20 can be lowered to the lowest level.

  By the way, in FIG. 18, when the plate-like member 270 is a plate-like member having elasticity and the symbol “540” is a protrusion 540, the adjacent protrusions are bent while the plate-like member 270 is bent when a load is applied to the link unit 204. Accordingly, the load is applied to the force of the elastic member 220, so that the link spring device 20 can also function as a pressure adjusting mechanism. Moreover, it can also comprise so that the raising pressure of the link spring apparatus 20 may be adjusted by replacing | exchanging the plate-shaped member 270 to what was provided with the appropriate elastic force. The chair 1 in this embodiment is different in that the armrest 107 is attached to a support column 107a attached to the base 30. There is an advantage that the structure of the seat portion 10 is simplified by erecting the armrest portion 107 from the pedestal 30.

  Next, a third embodiment of the chair provided with the exercise assisting device function will be described with reference to the drawings. FIG. 19 is a side view showing a third embodiment of the chair provided with the exercise assisting device function according to the present invention. The illustrated chair 1 includes a safety stopper 70 that limits the movable range of the link spring device 20 to a limited narrow range. In addition, the chair 1 of this embodiment is equipped with the structure similar to the chair 1 of 1st or 2nd embodiment mentioned above except the safety stopper 70. FIG. Therefore, those configurations are denoted by the same reference numerals, and description thereof is omitted here.

  First, detailed views of the safety stopper 70 are shown in FIGS. The illustrated safety stopper 70 is disposed on a safety stopper mounting portion 720 provided on the rear side of the chair 1 and adjacent to the mounting base 31 provided on the pedestal 30. As best shown in FIG. 20, the safety stopper 70 is schematically shown as a knob 701 for operating the safety stopper 70, a shaft portion 703 fixed to the knob 701, and a lower end of the shaft portion 703. A link joint portion 705 that is movably connected to the portion and attached to the stopper pedestal 709, and a movement restriction stopper 710 that is attached to the link joint portion 705 and moves up and down with the fulcrum 705a as a fulcrum. 702 and 702 are supported upright. As shown in FIG. 21, the knob 701 is formed in a horizontally long ring shape so that the user can hold it and move it up and down. The shaft portion 703 is a metal bar member and transmits the vertical movement of the knob 701 to the link joint portion 705. The movement restricting stopper 710 controls the amount of movement of the connecting shaft 219b attached to the lower side end 245g of the link plate 245b constituting the lowermost link unit 204 of the link spring device 20. That is, the movement restricting stopper 710 is connected to the link joint portion 705 by the arm portion 711 constituting the movement restricting stopper 710, and is moved downward by pushing down the knob 701, and is located on the left side of the connecting shaft 219b in FIG. This restricts the movement of the connecting shaft 219b. That is, since the connecting shaft 219b located on the opposite side is fixed, the link spring device 20 is restricted from moving in the vertical direction. Thereby, since the movement of the chair 1 in the vertical direction is restricted, the chair 1 can be safely used as an ordinary chair.

  On the other hand, the mounting position of the stopper pedestal 709 can be changed. That is, a plurality of mounting holes 723 and 723 are provided in the safety stopper mounting portion 720 to which the stopper base 709 is mounted. The attachment position can be changed by fastening a fastening member such as a screw, so that the reaching position of the movement restricting stopper 710 can be changed. Accordingly, if the position of the stopper pedestal 709 is arranged at a position where there is no gap between the movement restricting stopper 710 and the connecting shaft 219b, the movement of the link spring device 20 is completely restricted. Does not happen. In contrast, if the mounting position of the stopper pedestal 709 is arranged at a position where a gap is generated between the movement restricting stopper 710 and the connecting shaft 219b, the connecting shaft 219b can be moved by that amount, so that the link spring device 20 can be moved. Will also move up and down slightly. Thereby, the link spring device 20 can be moved within an extremely limited range and can be bent and stretched. For example, if the position of the safety stopper 70 is adjusted to limit the ascending / descending range of the link spring device 20 to 100 mm or less, even when the chair is being used, the body moves unconsciously back and forth and right and left, If the movement of stretching or stretching the back is performed, the chair 1 is pushed up to support the user's buttocks within the limited range of lifting, so that the lower limb is continuously performed by continuously performing the movement (for example, small bending and stretching movements). The muscular strength training can be performed, and the feeling of fatigue when sitting on the chair 1 can be reduced.

  As mentioned above, although preferable embodiment of the chair provided with the exercise assistance tool function which concerns on this invention was described, this invention is not limited to the above-mentioned embodiment, In the range of the technical idea, it becomes variously different forms. These different forms will be described below. The upper limit stopper mechanism 40 and the lower limit stopper mechanism 50 are operated by turning the handles 419 and 519, respectively. In addition, the lower limit stopper mechanism 50 is provided with three stopper portions 51a, 51b, and 51c to enable three-stage height adjustment, but this is not necessary if the side surface of the main body 51 is formed in a spiral shape with a gradually increasing diameter. The height of the stage can be adjusted.

  As described above, according to the chair having the exercise assisting device function according to the present invention, the mechanism is simpler and less troublesome than the conventional one, and it is possible to perform bending and stretching exercises that are safe and suitable for the user's body. Therefore, it is very effective not only for elderly people whose legs have deteriorated but also for people and students of middle-aged and elderly people who maintain and improve their lower limb strength and who sit in a chair for a long time.

It is a side view of 1st embodiment of the chair provided with the exercise assistance tool function which concerns on this invention. It is a front view of the chair of FIG. It is a top view of the chair of FIG. It is a perspective view of a link unit. It is a perspective view which shows the unweighted state of a link spring apparatus. It is a perspective view which shows the state by which the link spring apparatus was compressed. It is a figure which shows the raising force when the angle of a link unit is 60 degrees. It is a figure which shows the raising force when the angle of a link unit is 80 degrees. It is a figure which shows the raising force when the angle of a link unit is 100 degrees. It is a figure which shows the raising force when the angle of a link unit is 120 degrees. It is a figure which shows the raising force when the angle of a link unit is 140 degrees. It is a bottom view which shows an upper limit stopper mechanism. (A) and (b) are side views which show an upper limit stopper mechanism. (A) is a base part provided with a lower limit stopper mechanism and a spring pressure adjusting mechanism, and (b) is a front view thereof. (A) and (b) are side views showing a lower limit stopper mechanism and a spring pressure adjusting mechanism. It is a side view of 2nd embodiment of the chair provided with the exercise assistance tool function which concerns on this invention. It is a front view of the chair of FIG. It is an enlarged view of another lower limit stopper mechanism. It is a side view which shows 3rd embodiment of the chair provided with the exercise assistance tool function which concerns on this invention. It is a side enlarged view of a safety stopper. It is a back enlarged view of a safety stopper.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chair 10 Seat part 30 Base 31 Attachment base 33 Attachment base 40 Upper limit stopper mechanism 50, 50 'Lower limit stopper mechanism 51 Main body 51a, 51b, 51c Stopper part 60 Spring pressure adjustment mechanism 70 Safety stopper 101 Backrest part 105 Seat part 105a Inclination mechanism 107 Armrest part 109 Base parts 201, 202, 203, 204 Link units 211a, 211b Link members 215a, 215b Link plates 219a, 219b Connecting shaft 220 Elastic member 401 mounting base 410 Four-bar link 419 Handle 425 Stopper member 430 Guide member 530 Guide member 530a Cavity 540 Projection 610 Crankshaft 619 Handle 701 Knob 703 Shaft 705 Link joint 710 Movement restriction stopper 720 Safety stopper attachment

Claims (8)

In a chair with an exercise assisting device function that assists the operation by applying force by pushing up the user's buttocks from below when the user sitting on the chair makes an action of standing up from the chair,
A link spring device having a link mechanism formed by combining a plurality of link members crossed in an X shape, and connecting shafts positioned so as to face each other of the link mechanisms are connected to each other by elastic members at a plurality of locations. The link spring device formed by doing so is disposed on the bottom surface of the chair, and the link spring device is provided with an upper limit stopper and / or a lower limit stopper, thereby increasing and lowering the stroke length and / or the height of the chair. A chair provided with an exercise assisting function, characterized in that can be adjusted . In the chair provided with the exercise assistance tool function according to claim 1,
The link spring device is
A link member is formed by crossing two link plates in an X-shape, and a pair of the link members are arranged to face each other, and the intersections of the link members are connected by a central axis and the links Link units are formed by connecting the vicinity of the ends of the plates with connecting shafts, and a plurality of connecting units are provided so that the connecting shaft on the upper side of the link unit and the connecting shaft on the lower side of the other link unit are shared. The link mechanism that can be expanded and contracted is formed, and an elastic member that urges the connecting shafts positioned so as to face each other in at least two locations in a direction in which the link mechanism is extended is constructed. A chair with an exercise aid function characterized by that. In the chair provided with the exercise assistance tool function according to claim 1 or 2,
The link spring device includes a lifting / lowering spring pressure adjusting mechanism, whereby the lifting / lowering pressure of the chair can be adjusted. In the chair provided with the exercise assistance tool function according to any one of claims 1 to 3,
Furthermore, it is comprised with an armrest, The armrest part of the said armrest is made to be reversible to the front side, The chair provided with the exercise tool function characterized by the above-mentioned. In the chair provided with the exercise assistance tool function according to claim 4 ,
The armrest is disposed so as to follow up and down of the chair, and the chair has a function of assisting exercise. In the chair provided with the exercise assistance tool function according to any one of claims 1 to 5,
The seat portion of the chair is configured to tilt so as to support the posture of the user while contacting the user's buttocks with a predetermined pressing force when the user stands up. A chair with an exercise aid function. In the chair provided with the exercise assistance tool function according to any one of claims 1 to 6,
The link spring device is configured to push up with a force of 1/2 to 3/4 of the weight of the user. In the chair provided with the exercise assistance tool function according to any one of claims 1 to 7,
Provided with a safety stopper that limits the movable range of the link spring device to a limited narrow range, and enables a safe use as a chair, and a safety stopper that enables bending and stretching movement within the limited range. A chair equipped with an exercise aid function characterized by

Images