JP3189417U - Chair - Google Patents

Abstract

Provided is a chair in which the position and angle of each support surface can be adjusted, and the posture when a user sits can be changed as appropriate.
A chair including a support frame unit and a seat surface unit supported by the support frame unit, the seat surface unit including a seat surface portion supporting a seated person's buttocks from below. And a waist pad portion 32 formed so as to extend upward from the rear end of the seat surface portion 31, and the seat surface portion 31 is relative to the support frame unit 2 about the horizontal direction that is the width direction of the chair. A chair that is pivotally attached to the support frame unit 2 so as to be swingable together with the waist pad 32.
[Selection] Figure 2

Description

  The present invention relates to a chair, and more particularly to a chair capable of adjusting the angle of a seating surface.

  Many chair backs can be reclined to adjust the angle to the seat. However, such a backrest is usually formed in a straight plate shape, but the back of the person is somewhat curved, so it does not match the shape of the person's back and the back is firmly There is a problem that I cannot support.

  Thus, for example, Patent Document 1 discloses a chair in which the backrest is configured so that the degree of freedom in adjusting the position and angle is further increased and the support to the back portion is further stabilized. FIG. 1 shows a chair 1 according to the patent document, and the chair 1 is formed in a substantially L shape so as to protrude in the horizontal direction from the seat surface portion 13 to the back side and then bend upward in the vertical direction. A support member 11 and a backrest 12 provided on the support member 11 so as to support the back of the user are provided. The backrest portion 12 extends substantially in the left-right direction so as to be orthogonal to the support material 11, an intermediate portion thereof is fixed to the support material 11, and a bow formed in a bow shape whose left and right ends warp forward. And a backrest 123, 123 provided near the left and right ends of the arcuate bar 121, respectively.

  In such a configuration, the arched bar 121 is slidable with respect to the support member 11 in the vertical direction, and each backrest 123 is slidable with respect to the arched bar 121 in the horizontal direction. In addition, since each backrest 123 is rotatable with respect to the arcuate rod 121, the position and angle of each backrest 123 relative to the user's back can be adjusted to support the user's back and waist. Can be strengthened.

Taiwan registered utility model No. M294262

  However, in the conventional chair, if the user sits down for a long time, he / she keeps the same posture during that time. For example, the muscles of the back and waist are stiff and cause pain.

  The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to make each support surface of the chair with respect to the human body including the buttocks and the waist part movable so that the position of each support surface is It is an object of the present invention to provide a chair that can adjust the angle when the user is sitting and change the posture when the user is sitting, and can move the body while the user is sitting.

As means for achieving the above object, the present invention provides the following means.
That is, a chair comprising a support frame unit and a seat surface unit supported by the support frame unit, the seat surface unit comprising: a seat surface portion that supports a seated person's buttocks from below; A waist rest portion formed so as to extend upward from the rear end, and the seat surface portion together with the waist rest portion with respect to the support frame unit with respect to the left-right direction that is the width direction of the chair. Provided is a chair characterized in that it is pivotably attached to the support frame unit so that it can swing.

  The chair further includes an upper leg support unit supported by the support frame unit so as to be able to support an upper leg of a seated person positioned in front of the seat surface unit, and the upper leg support unit includes: And two upper leg support portions provided at positions corresponding to the left and right upper legs of the seated person, and the two upper leg support parts slide relative to the support frame unit along the left and right direction. It is preferable that each is configured as possible.

  And a backrest unit that supports the back of the seated person from behind and is pivotally attached to the support frame unit so as to swing with respect to the support frame unit about the left-right direction as an axis. It is preferable to provide.

  Moreover, it is possible to expand and contract, and it is preferable to further include a backrest unit provided in the backrest unit so as to contact the back of the seated person.

  Furthermore, it is preferable that an elbow rest unit provided in the backrest unit is provided so as to support the arm portion of the seated person, and the elbow rest unit is configured to be movable up and down with respect to the backrest unit.

  Furthermore, in the chair, the elbow rest unit has left and right ends and is connected to the backrest unit so as to be vertically movable with respect to the backrest unit, and left and right arm portions of the seated person And two elbow rest members rotatably mounted near the left and right ends of the connecting member so as to swing in the left-right direction with respect to the connecting member. preferable.

  The support frame unit includes two front legs that are spaced apart from each other, two rear legs that are spaced apart from each other, and either the left or right side in the left-right direction. A first driving member that is provided on the connecting plate and that drives the swing of the seat surface portion. And a first power source that provides power to the first drive member and is provided on the connecting plate.

  Further, the support frame unit has an upper plate provided so as to connect the two front legs below the upper thigh support unit, and the upper plate has an upper surface in the left-right direction. Two sliding grooves extending in an arc along the left-right direction are formed at intervals, and the two upper thigh support portions of the upper thigh support unit are respectively provided with a support plate and the support It is preferable to have a sliding projection provided on the plate so as to project downward and slidably fitted in the sliding groove of the upper plate.

  Further, the backrest unit supports a second drive member rotatably attached to the vicinity of the upper end of the rear leg, and a back of the seated person, and is attached to the support frame unit with the left-right direction as an axis. A backrest plate coupled to the second drive member so as to be able to swing relative to the second drive member; and a second power source provided to the support frame unit for supplying power to the second drive member. It is good to have further.

  Furthermore, the elbow rest unit is provided on the backrest plate at a distance from each other in the left-right direction and two third drive members that drive the vertical movement of the connecting member, It is preferable to further include a third power source for supplying power to the driving member.

  Further, the backrest unit further includes two accommodating portions formed to be recessed from a surface of the backrest plate facing the seated person, and the backrest unit can be expanded and contracted. And an air sac accommodated in each of the accommodating portions, and a pump unit provided on the backrest plate and arranged to be able to expand and contract each air sac. preferable.

  In addition, the said waist support part is good to be formed in the substantially inverted trapezoid shape by the front view.

  According to the above means, the seat surface portion and the waist rest portion of the seat surface unit are configured to be swingable, and by the swing, the position of the seat surface portion relative to the buttocks and the waist portion of the seat occupant and the position of the waist rest portion relative to the seat occupant Since the angle can be changed, it is possible to provide a chair that can move the body while the occupant is sitting, and can appropriately change the posture when the occupant is sitting.

It is a perspective view which shows the conventional chair which can adjust the position and angle of a backrest. It is a perspective view showing one embodiment of a chair concerning the present invention. FIG. 3 is a side view of the chair shown in FIG. 2 viewed from the side and partially seen through. It is a side view which shows the state which the seat surface unit inclined forward in one Embodiment of the chair which concerns on this invention. It is a side view which shows the state which the seat surface unit inclined backward in one Embodiment of the chair which concerns on this invention. FIG. 3 is a top view of the chair shown in FIG. 2 as viewed from above and partially seen through. It is a figure which shows the state by which the upper leg support unit and the elbow rest unit were developed in FIG. It is a side view which shows the one use condition of the chair which concerns on this invention. It is a side view which shows another use condition of the chair which concerns on this invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.
2 and 3 show an embodiment of a chair according to the present invention, in which FIG. 2 is a perspective view showing the entire embodiment, and FIG. 3 is a side showing a use state by a seated person 9. FIG.

  The chair according to the present embodiment includes a support frame unit 2 serving as a grounding side, a seat surface unit 3 that is supported by the support frame unit 2 and mainly supports the buttocks of the seated person 9 from below, and a front of the seat surface unit 3. The upper thigh support unit 4 supported by the support frame unit 2 so as to be able to support the upper thigh of the seated person 9, and the support frame unit 2 is rotatably attached to the seated person 9. The backrest unit 5 that supports the back from behind, the backrest unit 6 that is provided on the side of the backrest unit 5 that faces the seated person 9 so as to abut against the back of the seated person 9, and the arm of the seated person 9 And an elbow rest unit 7 provided on the backrest unit 5. Hereinafter, each unit will be described in detail.

(Support frame unit 2)
The support frame unit 2 includes two front legs 21 and 21 that are spaced apart from each other and two rear legs 22 and 22 that are provided with a sense of each other to support the chair, A connection that connects the vicinity of the upper ends of one front leg 21 and one rear leg 22 on the same left or right side in the left-right direction (that is, the same in the following) (left and right in the drawing). It has the board 23 and the upper board 24 which is located under the upper leg support unit 4 and has connected the two front legs 21, 21 to each other. As shown in FIGS. 6 and 7, the upper plate 24 has two sliding grooves 241 and 241 spaced from each other in the left-right direction on the upper surface thereof. These are formed so as to extend in an arc shape generally along the left-right direction.

(Seat unit 3)
The seat surface unit 3 includes a seat surface portion 31 formed in a plate shape extending horizontally so as to support the buttocks of the seat occupant 9 from below, and a seat surface portion so as to be able to contact the waist of the seat occupant 9 from behind. 31 and a waist pad portion 32 formed so as to extend upward from the rear end of 31. The seat surface portion 31 is pivotally attached so as to be pivotally supported between the two rear legs 22 and 22 of the support frame unit 2 near the rear end thereof, and is attached to the support frame unit 2 with the left-right direction as an axis. On the other hand, it can swing together with the waist pad 32. Further, the seat surface unit 3 is provided on the connecting plate 23 of the support frame unit 2 and is configured to be able to drive the swinging of the seat surface portion 31; A first power source 33 is provided on the connecting plate 23 and applies power to the first drive member 34 to drive the swing.

  In the present embodiment, as shown in FIG. 3, the first drive member 34 is formed as a cam having a protruding end at one place on the circumference, and the first power source 33 rotates the cam. The position is adjusted so that the projecting edge pushes up the seat surface portion 31 from below, and the seat surface portion 31 is the forward tilt position shown in FIG. 4, the rear tilt position shown in FIG. 5, and the position therebetween. It can be swung between the horizontal position shown in FIG. However, the first drive member 34 may be any member that can drive the swinging of the seat portion 31, and is not limited to the cam configuration as described above. For example, a pneumatic or hydraulic piston can be used. Since the seat surface portion 31 and the waist pad portion 32 of the seat surface unit 3 are configured to be swingable as described above, the swing of the seat surface portion 31 and the waist pad portion 32 with respect to the buttocks and the waist of the seated person 9 is caused by the swing. The contact condition, specifically the contact angle and contact strength can be adjusted. Further, in the present embodiment, as shown in FIG. 2, the waist pad portion 32 is formed in a substantially inverted trapezoidal shape when viewed from the front.

(Upper leg support unit 4)
FIG. 6 is a top view of the chair shown in FIGS. 2 and 3 as seen from above and partially seen through. As shown in FIGS. 3 and 6, the upper leg support unit 4 is provided at positions corresponding to the left and right upper legs so that the left and right upper legs of the seated person 9 can be supported from below. There are two upper leg support portions 41, 41. The two upper thigh support portions 41 and 41 each have a support plate 411 and a sliding protrusion 412 provided so as to protrude from the lower surface of the support plate 411. The sliding protrusion 412 is slidably fitted into one of the two sliding grooves 241 and 241 of the upper plate 24 of the support frame unit 2.

  With this configuration, each of the upper thigh support portions 41 and the support frame unit 2 substantially along the left-right direction are in the closed position shown in FIG. 7 is slidable between the open position shown in FIG. 7 (the position where the two upper thigh support portions 41, 41 are separated). Since the two upper thigh support portions 41, 41 of the upper thigh support unit 4 are configured to be slidable as described above, the seated person 9 remains seated and the upper thigh portion is supported. The upper thigh can be moved in the left-right direction.

(Backrest unit 5)
As shown in FIGS. 2 and 3, the backrest unit 5 includes a second drive member 51 that is rotatably provided near the upper end of the rear leg 22 of the support frame unit 2, and the seater 9. It has a backrest plate 52 connected to the second drive member 51 so as to be positioned above the waist pad portion 32 of the seat unit 3 so that the back portion can be supported from behind. The second drive member 51 can rotate relative to the rear leg 22 to drive the backrest plate 52 so as to swing relative to the support frame unit 2 about the left-right direction. Further, the support frame unit 2 is provided with a second power source 53 that supplies power to the second drive member 51 for driving the backrest plate 52 as described above. Moreover, the backrest unit 5 has two accommodating portions 521 formed to be recessed from the surface of the backrest plate 52 facing the seated person 9, and the two accommodating portions 521 are provided at intervals on the left and right. ing. Since the backrest plate 52 of the backrest unit 5 is configured to be swingable as described above, the seated person 9 takes a backward tilting posture so as to lower the head backward, for example, as shown in FIG. You can stretch your back.

(Elbow rest unit 7)
FIG. 7 is a diagram illustrating a state in which the upper leg support unit 4 and the elbow rest unit 7 of the chair are deployed in the present embodiment. As shown in FIG. 3 and FIG. 7, the elbow rest unit 7 connects two elbow rest members 72, 72 that respectively support the left and right arms of the seated person 9, and connects each elbow rest member 72 to the backrest unit 5. And a third drive member 73 provided on the backrest plate 52 at intervals in the left-right direction. The connecting member 71 extends in a bar shape in the left-right direction, and is connected to the third drive member 73 so as to be movable up and down with respect to the backrest unit 5. Each elbow rest member 72 is elongated in a bar shape in the front-rear direction, and is pivotably attached to both the left and right ends of the connecting member 71 so as to swing in the left-right direction with respect to the connecting member 71. In addition, the backrest plate 52 is provided with a third power source 74 that supplies power for moving the connecting member 71 up and down to the third drive member 73. Since each elbow rest member 72 of the elbow rest unit 7 is configured to be movable up and down with respect to the backrest unit 5 as described above, the height of the elbow rest member 72 with respect to the seating surface is adjusted according to the needs of the seated person. can do. Since each elbow rest member 72 is configured to be swingable with respect to the connecting member 71 as described above, the seated person 9 sits and the arm portion is supported by each elbow rest member 72. The arm can be moved as it is. For example, a pneumatic or hydraulic piston can be used as the third drive member 73.

(Back support unit 6)
As shown in FIGS. 2 and 3, the backrest unit 6 can be expanded and contracted, and two air bags 61 are accommodated in the respective accommodating portions 521 of the backrest plate 52. 61, and a power source (not shown) so that each air sac 61 can be expanded and contracted by sending and sucking air to each air sac 61. And a pump unit 62 arranged and configured.

  The effects of the chair according to the present invention configured as described above will be specifically described below. As shown in FIG. 3, the chair according to the present invention can be used as a normal chair for the seated person 9, and the third driving member 73 is controlled to move the connecting member 71 up and down. Thus, the left and right elbow rest members 72 can be adjusted to an appropriate height. Further, by operating the first power source 33 and rotating the first drive member 34, the seat surface portion 31 and the waist rest portion 32 of the seat surface unit 3 are tilted forward as shown in FIG. In this state, for example, the waist of the seated person 9 is pushed and the posture is slightly bent forward. At this time, the second power source 53 of the backrest unit 5 is further operated to swing the backrest plate 52 forwardly by the second drive member 51 and each air bag 61 of the backrest unit 6 is moved. When inflated, the center of the back of the seated person 9 is pushed by the air sac 61 from behind, so that the seated person 9 can be stretched in the back and stretched, and the abdomen of the seated person 9 The muscles around the waist can be stretched (see FIG. 8).

  When the back is stretched and the chest is stretched as described above, both the arms and legs of the seated person 9 are naturally open, but the upper leg support units 41 of the upper leg support unit 4 and Since each elbow rest member 72 of the elbow rest unit 7 can slide or rotate (swing) to the deployed position as shown in FIG. 7, the seated person 9 is supported by both arms and both legs. The postures of both arms and legs can be changed as described above. Furthermore, the reason why the waist pad portion 32 of the seat surface unit 3 has a substantially inverted trapezoidal shape as described above is to make it correspond to the shape of the pelvis of the human body. It can abut firmly. Further, from the state shown in FIG. 8, the first drive member 34 is rotated to return the seat surface portion 31 and the waist rest portion 32 of the seat surface unit 3 to the horizontal state shown in FIG. 3, and When the backrest plate 52 is returned to the horizontal state by the second drive member 51 and the air sac 61 of the backrest unit 6 is contracted, it can be returned to the state shown in FIG.

  FIG. 9 is a side view showing another use state of the chair according to the present invention. In this state, only the backrest plate 52 is inclined backward while the seat surface portion 31 is kept horizontal. Since the backrest plate 52 is independently driven by the second power source 53 and the second drive member 51 in this way and can swing back and forth around the support frame unit 2 side, the back of the seated person 9 can be pushed. The upper body of the seated person 9 can be moved back and forth. Thus, the seated person 9 can not only change the posture of the upper body while sitting, but also can perform strength training by moving the abdominal and back muscles. For example, if the backrest plate 52 is swung so that the upper body of the seated person 9 is tilted backward as shown in FIG. 9, the abdominal and thigh muscles (for example, quadriceps) of the seated person 9 can be extended. In addition, if each air sac 61 of the backrest unit 6 is inflated as shown in FIG. 9 with the backrest plate 52 tilted backward, the back of the wearer 9 can be pushed and the chest can be stretched. At this time, the seat portion 31 and the waist pad portion 32 can be tilted backward together with the backrest plate 52.

  In addition, each support plate 411 of the left and right upper thigh support portions 41 and 41 and the two left and right elbow support members 72 and 72 of the elbow support unit 7 do not swing or slide by themselves with power. The seat 9 moves when force is applied to the arm or leg of the seated person 9. Therefore, when the chair according to the present invention is used, the seated person 9 swings the elbow rest members 72 and 72 with both arms and both legs supported while both arms and both thighs are supported. It is possible to move within the range and the sliding range of each support plate 411, and it is possible to perform strength training of the arms and legs.

  Further, a first power source 33 that drives the swinging of the seat portion 31 and the waist pad portion 32, a second power source 53 that drives the swinging of the backrest plate 52, and a first power source that drives the vertical movement of the elbow rest member 72. The power source 74 and the pump unit 62 that drives the expansion and contraction of the air sac 61 are integrated and controlled by a single controller (not shown), respectively, so that they can be activated individually or have predetermined operations. You may make it each start according to a program. Since such a control method is well known in the technical field, a detailed description is omitted here.

  In summary, the chair according to the present invention includes the seat surface portion 31 and the waist support portion 32 of the seat surface unit 3, the support plates 411 of the upper leg support unit, the back plate 52 of the backrest unit 5, and the air of the back support unit 6. Since the sac 61 and each elbow rest member 72 of the elbow rest unit are configured to be movable as described above, the seated person 9 can move each part of the body such as the back, legs, and arms while sitting. . Thereby, the posture when the seated person sits can be changed as appropriate, and the seated person can move the body while sitting and perform stretching, strength training, and the like.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to this, It cannot be overemphasized that it can change variously in the range which does not deviate from the summary.

  According to the chair of the present invention, a seated person can move his / her upper body, both arms and both thighs while sitting, that is, he can perform strength training and stretching without sitting on the body while sitting. Therefore, it can be used as a rehabilitation chair, for example.

2 Support frame unit 21 Front leg 22 Rear leg 23 Connecting plate 24 Upper plate 241 Sliding groove 3 Seat surface unit 31 Seat surface portion 32 Lumbar support portion 33 First power source 34 First drive member 4 Upper leg support unit 41 Upper leg Supporting part 411 Supporting plate 412 Sliding projection 5 Backrest unit 51 Second drive member 52 Backresting plate 521 Housing part 53 Second power source 6 Backrest unit 61 Air sac 62 Pump unit 7 Elbow rest unit 71 Connecting member 72 Elbow rest Member 73 Third drive member 74 Third power source 9 Seated person

Claims (12)

A chair comprising a support frame unit and a seat surface unit supported by the support frame unit,
The seat surface unit includes a seat surface portion that supports a seated person's buttocks from below, and a waist rest portion that is formed to extend upward from the rear end of the seat surface portion,
The seat surface portion is pivotally attached to the support frame unit so as to be able to swing together with the waist rest portion with respect to the support frame unit with a horizontal direction that is a width direction of the chair as an axis. And a chair. An upper leg support unit supported by the support frame unit so as to be able to support the upper leg of the seated person located in front of the seat surface unit;
The upper thigh support unit has two upper thigh support portions provided at positions corresponding to the left and right upper thighs of the seated person, and the two upper thigh support portions are arranged along the left and right direction with the support frame. The chair according to claim 1, wherein the chair is configured to be slidable with respect to the unit.   A backrest unit that supports the back of the seated person from behind and is pivotally attached to the support frame unit so as to be able to swing with respect to the support frame unit about the left-right direction as an axis. The chair according to claim 2.   The chair according to claim 3, further comprising a backrest unit that can be inflated or contracted and is provided on the backrest unit so as to abut against the back of the seated person.   An elbow rest unit provided in the backrest unit so as to support an arm portion of a seated person is further provided, and the elbow rest unit is configured to be movable up and down with respect to the backrest unit. Item 5. The chair according to item 4. The elbow rest unit is
A connecting member having left and right ends and connected to the backrest unit so as to be vertically movable with respect to the backrest unit;
Two elbows that support the left and right arms of the seated person and are pivotally mounted near the left and right ends of the connecting member so as to swing in the left-right direction with respect to the connecting member, respectively. The chair according to claim 5, further comprising a placing member. The support frame unit includes two front legs provided at a distance from each other, two rear legs provided at a distance from each other, and the left and right sides in the left-right direction on the same side. A connecting plate connecting the front leg and the rear leg;
The seating surface unit is provided on the connecting plate and drives the swing of the seating surface portion, and supplies power to the first driving member. The chair according to claim 6, further comprising: a first power source provided on the chair. The support frame unit has an upper plate provided so as to connect the two front legs below the upper thigh support unit;
The upper plate is formed on its upper surface with two sliding grooves extending in a circular arc shape along the left-right direction at intervals in the left-right direction,
The two upper thigh support portions of the upper thigh support unit are provided so as to protrude downward on the support plate and the support plate, respectively, and are slidably fitted in the sliding grooves of the upper plate. The chair according to claim 7, further comprising a sliding protrusion.   The backrest unit supports a second drive member rotatably attached to the vicinity of the upper end of the rear leg, and a back of the seated person, with respect to the support frame unit about the left-right direction as an axis. A backrest plate coupled to the second drive member so as to be capable of swinging, and a second power source provided to the support frame unit for providing power to the second drive member. The chair according to claim 7 or 8, characterized by comprising:   The elbow rest unit is provided on the backrest plate at a distance from each other in the left-right direction, and two third drive members that drive the vertical movement of the connecting member, and each of the third drive members The chair according to claim 9, further comprising a third power source that provides power to the chair. The backrest unit further includes two accommodating portions formed to be recessed from a surface facing the seated person of the backrest plate,
The backrest unit can be inflated or shrunk, and is provided on the backrest plate while being inflated or shrunk while being provided on the backrest plate. 11. A chair according to claim 9 or 10, characterized in that it has a pump unit arranged so as to be able to do so.   The chair according to any one of claims 1 to 11, wherein the waist rest portion is formed in a substantially inverted trapezoidal shape when viewed from the front.

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