JP3225237U - Chair - Google Patents

Abstract

A chair that moves smoothly and has good stability and comfort.
A chair support holder (2) is provided above a base (1). The seat 4 is pivotally attached to the backrest 3, and a lower guide roller 442 is provided behind the seat 4, and a front guide roller 451 is provided in front of the seat 4. Second and third guide slots 54 and 55 are provided behind and in front of the operation plate 51 of the operation holder 5, respectively. The lower guide roller 442 can move within the first and second guide slots 24 and 54, and the third guide slot 55 can be joined with the front guide roller 45. Both ends of the first operating rod 7 are pivotally connected to the support holder 2 and the seat 4, respectively. When the first operating rod 7 contracts, the lower guide roller 442 is located at the rear part of the first and second guide slots 24 and 54, the front guide roller 45 is located at the rear part of the third guide slot 55, and 4 can be moved backward and simultaneously, the front end can be lifted.
[Selection diagram] Fig. 1

Description

  The present invention relates to a chair, which mainly relates to a combination structure of a chair that moves smoothly and has good stability and comfort.

  Conventional chairs are designed to have a backrest with adjustable back tilt to improve sitting comfort. One example of the conventional structure shown in FIG. 8 mainly includes a base 1 ', a seat 2', and a backrest 3 ', and an armrest frame 11' and a guide bar 12 'are fixed above and at the center of the base 1', respectively. It is connected. In addition, a slide bush 21 'that can be connected to the guide bar 12' by a sleeve is provided in front of the seat 2 ', and a pivot portion 22' is provided at the rear end of the seat 2 '. A pivot 31 'is provided at the bottom end of the backrest 3', which is pivotally connected to the pivot 21 'of the seat 2', and a pivot 32 'is provided at the center, and the base 1' is provided. Is pivotally connected to the rear end of the upper armrest frame 11 '. The backrest 3 'and the seat 2' can have a small seating angle, and the backrest 3 'can be inclined backward. At the same time, the seat 2 'moves forward in conjunction with it, and the slide bush 21' is moved to the front part of the guide bar 12 ', so that the backrest 3' and the seat 2 'can be adjusted to a large reclining angle.

  However, in the above-mentioned structure, the seat 2 'simply moves forward in conjunction with the backrest 3' at the time of reclining, and since the rising angle θ1 is small, the seat 2 'supports most of the weight of the body at the time of reclining. However, there was a disadvantage that the comfort was not so good. In addition, with this structure, the angle of the backrest 3 'cannot be controlled independently, and there is a disadvantage that the applicability is low.

  Further, in another example of the conventional chair structure shown in FIG. 9, a legrest 51 'is mainly provided with a base 4', a seat 5 ', and a backrest 6', and a leg rest 51 'is provided in front of the seat 5'. 'Is provided with a spring 52' joined to the base 4 '. The backrest 6 'and the seat 5' have a fixed joining angle, and are provided with a pivoting portion 61 'to be pivotally connected to the base 4'. When the occupant reclines the backrest 6 ', the backrest 6' and the seat 5 'are rotated by the pivot 61', and the spring 52 'is pulled to limit the rearward tilt angle of the backrest 6', and the seat 5 ' , The elevation angle θ2 in the direction parallel to the ground is greatly increased. Thereby, most of the weight of the user at the time of reclining is applied to the backrest 6 ', so that the reclining has good comfort as if it were turned over by weightlessness.

  However, in the above-described design, when the backrest 6 'is tilted backward, the seat 5' is correspondingly deflected backward, and the center of gravity largely moves to the rear part of the base 4 ', and the center of gravity of the entire chair becomes unstable. There was a possibility of falling over. Further, since the rising angle θ2 of the seat 5 ′ is much larger than the angle at which an ordinary person lies on his back, there is a disadvantage that the comfort is not good. Furthermore, since the joining angle of the backrest 6 'and the seat 5' is fixed, the angle of the backrest 3 'cannot be controlled independently, and there is a drawback that the applicability is low.

  It is an object of the present invention to provide a chair that moves smoothly and has good stability and comfort.

The chair of the present invention includes a base, a support holder, a backrest, a seat, a working holder, and a first working rod.
The support holder is provided above the base and includes at least one support plate perpendicular to the ground. A first guide slot is provided on the rear side of the support plate, and the first guide slot has an inclined slot portion inclined downward from the front to the rear.

  The seat is pivotally attached at the rear to the backrest so that the backrest can adjust the backward tilt angle, at least one lower guide roller is provided at a position corresponding to the first guide slot at the rear, and at least at the front. One front guide roller is provided.

  The actuation holder is provided below the seat and comprises an actuation plate provided on the side of at least one support plate. A second guide slot and a third guide slot are provided behind and in front of the working plate, respectively. The second guide slot corresponds to the inclined slot portion of the first guide slot, and is provided on one side of the first guide slot to move the lower guide roller in the first guide slot and the second guide slot. The third guide slot has a different inclination from the second guide slot, and can be connected to the front guide roller.

  Both ends of the first operating rod are pivotally connected to the support holder and the seat, respectively. When the first operating rod is extended, the lower guide roller can be located at the front part of the first guide slot and the second guide slot, and the front guide roller can be located at the front part of the third guide slot. Can be. When the first operating rod is contracted, the lower guide roller can be located at the rear part of the first guide slot and the second guide slot, and the front guide roller can be located at the rear part of the third guide slot. can do. The first operating rod can move the seat further rearward, and at the same time lower the rear end, and can perform an operation of lifting the front end of the seat upward.

  Preferably, a lower slot portion is provided downwardly behind the inclined slot portion of the first guide slot. The operation holder is pivotally connected to the support holder, and when the first operation rod moves the lower guide roller of the sheet to move to the lower slot portion, the rear end of the sheet lowers and the operation holder can be rotated. And so that the front end of the sheet is lifted upward.

  Preferably, it further includes a second operating rod. The bottom end of the backrest is pivotally connected to the back of the seat, and both ends of the second operating rod are respectively connected to the backrest and the seat, and the second operating rod can adjust the tilt angle of the backrest. .

  Preferably, a footrest provided with a link mechanism is further included. The link mechanism is pivotally connected to the seat, and can be folded when moved forward and unfolded when moved backward, corresponding to the seat.

  Preferably, it further includes at least one spring. The spring is joined with the support holder and the working holder.

  In the present invention, when the first operating rod is extended, the footrest is in a folded state, and is used for normal seating. At this time, the backrest can be controlled by the second operating rod and adjusted to an appropriate rearward tilt angle, and the backrest angle is not affected by the seat position, and has good comfort and applicability in normal sitting. .

  According to the present invention, the first operating rod can be contracted, and the seat can be interlocked to move backward corresponding to the operation holder, and at the same time, the link mechanism of the footrest can cooperate to expand forward. It is. The inclined slot portion of the first guide slot has a rear end provided lower than a front end. This reduces the force on the buttocks by lowering the rear end of the seat until the front elevation angle of the seat is greater than the elevation angle before the seat moves rearward, allowing the seated center of gravity to face backwards and leaning against the backrest. The backrest can be adjusted with the second actuation rod as needed. This improves sitting comfort and applicability.

  According to the present invention, the first operating rod can be contracted, and the lower guide roller can be moved to the position of the lower slot of the first guide slot. Further, the operation holder can be rotated in conjunction with it, and the front end of the seat can be raised to a larger elevation angle than when the lower guide roller is at the position of the inclined slot. At this time, the second actuation rod can tilt the backrest backward to a good reclining angle, and the pressure on the buttocks can be directed backward to distribute evenly on the back and waist, thereby improving comfort, and reducing the foot during reclining. By lifting, the circulation of blood flow can be further promoted, and the comfort and effect of relaxing can be improved.

FIG. 2 is an exploded perspective view of the present invention. FIG. 3 is an assembly view of the present invention, showing a state where a seat has moved forward. FIG. 3 is a plan view of the present invention, showing a state in which the seat has moved forward. FIG. 3 is a side view of the present invention, showing a state where a seat has moved forward. FIG. 4 is a side view of the present invention, showing a state in which the sheet moves rearward when the lower guide roller is at the rear end of the inclined slot portion, the rear end is lowered, and the front end is raised. FIG. 3 is a perspective view of the present invention, showing a state in which a sheet moves backward, a rear end is lowered, and a front end is raised when a lower guide roller is in a lower slot portion. FIG. 3 is a side view of the present invention, showing a state in which the seat has moved backward, the rear end has been lowered, and the front end has been raised. It is the schematic of the conventional chair. FIG. 3 is a schematic view of another conventional chair.

  The pivot members at each pivot position are not shown in the following drawings. Please refer to FIG. The chair of the present invention includes a base 1, a support holder 2, a backrest 3, a seat 4, an operating holder 5, a footrest 6, a first operating rod 7, and a second operating rod 8. The base 1 has a chassis 11, which has upright columns 12.

  The support holder 2 is provided above the column 12 of the base 1, and has a horizontal column 21 that is horizontal to the ground, and is combined with the column 12. A first pivot portion 22 is provided above the horizontal column 21, and a support plate 23 is provided on each side of the horizontal column 21 in a direction perpendicular to the ground. The two support plates 23 have a symmetric structure, and a first guide slot 24 is provided on the rear side of each support plate 23. An inclined slot portion 241 is provided on the front side of the first guide slot 24, and the inclined slot portion 241 has a downward inclination from the front to the rear, and a lower slot portion 242 is oriented downward at the rear end of the inclined slot portion 241. It is provided bent. The top edge of the first guide slot 24 is parallel to the top edge of the support plate 23. Further, a second pivoting portion 25 is provided below the front side of each support plate 23, and a lower convex column 26 is provided inside each support plate 23.

  A third pivot portion 31 is provided below both sides of the backrest 3, and a fourth pivot portion 32 is provided below the backrest 3.

  The seat 4 includes two side bars 40, and a front bar 41 and a rear bar 42 are provided on the front side and the rear side of the two side bars 40, respectively. The rear ends of the two side bars 40 are provided with fifth pivot portions 43 which are pivotally connected to the third pivot portions 31 of the backrest 3, respectively. Two rear guide posts 44 are provided at positions of the rear bar 42 corresponding to the two support plates 23 of the support holder 2, and each rear guide post 44 includes two plate bodies 441 parallel to each other. A lower guide roller 442 and an upper guide roller 443 movable along the top edges of the first guide slot 24 and the support plate 23 are provided at a lower position and an upper position between the two plate bodies 441, respectively. . The front bar 41 is provided with two front guide plates 45 facing downward, and each of the two front guide plates 45 is provided with a front guide roller 451. Further, two sixth pivot portions 46 are provided in front of the front bar 41, and a seventh pivot portion 47 is provided behind the front bar 41. An eighth pivot portion 48 is provided on the side bar 40 toward the center of the seat 4. A ninth pivot 49 is provided behind the front bar 41.

  The working holder 5 is provided below the seat 4 and comprises two parallel working plates 51, each of which is provided beside the two support plates 23. The two operation plates 51 are connected by a connecting rod 52, and below each operation plate 51, a tenth pivot portion 53 pivotally connected to the second pivot portion 25 of the support plate 23 is provided. A second guide slot 54 and a third guide slot 55 are provided behind and in front of the operation plate 51, respectively. The length of the second guide slot 54 substantially corresponds to the inclined slot portion 241 of the first guide slot 24, and is provided on one side of the first guide slot 24. The third guide slot 55 is provided substantially horizontally with respect to the ground. The operation plate 51 and the support plate 23 are sandwiched between two plate plates 441 of the rear guide post 44, and simultaneously move the lower guide roller 442 in the first guide slot 24 and the second guide slot 54, and The upper guide roller 443 can move at the top edge of the support plate 23. Further, the third guide slot 55 is joined to the front guide roller 451 of the sheet 4 and moves the front guide roller 451 within the third guide slot 55. An upper convex column 56 is provided inside the operation plate 51. The upper convex column 56 and the lower convex column 26 are joined to a spring 57, and the wobble of the operation holder 5 is prevented by the tension of the spring 57, and the stability of the operation holder 5 is improved. An eleventh pivot portion 58 is provided above each of the front sides of the two operation plates 51.

  The footrest 6 includes a link mechanism 61 that can contract and expand in accordance with the operation of the seat 4. The link mechanism 61 includes two twelfth pivot portions 62 that are pivotally connected to the two eleventh pivot portions 58 of the operation plate 51, and two thirteenth pivot portions that are pivotally connected to the sixth pivot portion 46 of the seat 4. There is provided a mounting portion 63 and a fourteenth pivot portion 64 pivotally connected to the seventh pivot portion 47 of the seat 4.

  The first actuating rod 7 may be an electric rod or another telescopic rod body. At both ends of the first operating rod 7, a fifteenth pivot part 71 and a sixteenth pivot part 72, which are respectively pivoted with the first pivot part 22 of the support holder 2 and the ninth pivot part 49 of the seat 4, are provided. Each is provided.

  The second actuation rod 8 may be a motorized rod or another telescopic rod body. At both ends of the second operating rod 8, a 17th pivot portion 81 and an 18th pivot portion 82 respectively pivotally provided with the eighth pivot portion 48 of the seat 4 and the fourth pivot portion 32 of the backrest 3, respectively. Is provided.

  In the present invention, when the first operating rod 7 is extended, the seat 4 is at a position moved forward corresponding to the operating holder 5, and the front guide roller 451 is moved to the third guide slot 55 of the operating holder 5. , The lower guide roller 442 can be positioned at a front portion of the first guide slot 24 of the support holder 2 and the second guide slot 54 of the operation holder 5. At this time, the front elevation angle of the seat 4 is θ3, and the footrest 6 is in a folded state and is used for normal seating. At this time, the backrest 3 can be controlled by the second operating rod 8 to be adjusted to an appropriate rearward inclination angle, and the angle of the backrest 3 is not affected by the position of the seat 4, so that the comfort and the comfort in normal sitting can be improved. It has applicability.

Please refer to FIG. 1 and FIG. According to the present invention, the first operating rod 7 can be contracted, and the seat 4 can be interlocked to move backward corresponding to the operating holder 5, and the front guide roller 451 can be moved to the rear end of the third guide slot 55. Can be moved to parts. The lower guide roller 442 can move to the rear part of the inclined slot portion 241 of the first guide slot 24, the upper guide roller 443 can move to the rear part of the top of the support plate 23, and the sheet 4 moves rearward. , The link mechanism 61 of the footrest 6 can be linked and deployed forward.
The inclined slot portion 241 of the first guide slot 24 has a rear end provided lower than a front end. Therefore, as shown in FIG. 4, the elevation angle θ4 of the front end of the seat 4 is larger than the elevation angle θ3 before the seat 4 moves backward, and the seat 4 leans against the backrest 3 with the center of gravity of the seat 4 facing backward. Thus, the force applied to the buttocks can be reduced, and the backrest 3 can be adjusted with the second operating rod 8 for the backward tilt angle as needed. This improves sitting comfort and applicability.
When the above-mentioned sheet 4 moves rearward, the front guide roller 451 and the third guide slot 55 are joined to the front, and the lower guide roller 442, the first guide slot 24, and the second guide slot 54 are joined to the rear at the same time. Are joined, it is possible to provide good operation stability. In addition, since the lower guide roller 442 and the upper guide roller 443 can sandwich the first guide slot 24 of the support plate 23 and the top edge of the support plate 23, good support strength and operational stability can be provided.

  Please refer to FIG. 6 and FIG. The present invention can further contract the first operating rod 7 and move the lower guide roller 442 to the position of the lower slot 242 of the first guide slot 24. Further, when the operation holder 5 rotates in conjunction with the positions of the second pivot portion 25 and the tenth pivot portion 53, and the lower end guide roller 442 of the front end of the sheet 4 is at the position of the inclined slot portion 241. Can be raised to an elevation angle θ5 larger than the angle θ4. At this time, the second operating rod 8 tilts the backrest 3 backward to a good reclining angle, the pressure on the buttocks is directed backward, and the pressure is distributed evenly on the back and waist, so that the comfort can be improved. By lifting the feet, the circulation of blood flow can be further promoted, and the relaxing comfort and effect can be improved.

  As described above, the present invention can improve the reclining comfort, and can improve the sitting comfort by adjusting the angle of the backrest as needed during normal sitting. In the present invention, the footrest may not be provided in front of the seat. The embodiments described above are illustrative of the present invention, and do not limit the present invention. All modifications that can provide equivalent effects based on the spirit of the present invention fall within the scope of the present invention.

  Although a detailed description has been given using specific embodiments, many modifications and changes can be made without departing from the technical scope of the present invention, and the scope of the present invention is determined by the claims for utility model registration. Can be

DESCRIPTION OF SYMBOLS 1 Base 11 Chassis 12 Column 2 Support holder 21 Horizontal column 22 First pivot portion 23 Support plate 24 First guide slot 241 Inclined slot portion 242 Lower slot portion 25 Second pivot portion 26 Lower convex column 3 Backrest 31 Third pivot Attachment part 32 Fourth pivot part 4 Seat 40 Side bar 41 Front bar 42 Rear bar 43 Fifth pivot part 44 Rear guide post 441 Plate body 442 Lower guide roller 443 Upper guide roller 45 Front guide plate 451 Front part Guide roller 46 Sixth pivot part 47 Seventh pivot part 48 Eighth pivot part 49 Ninth pivot part 5 Operating holder 51 Operating plate 52 Connecting rod 53 Tenth pivot part 54 Second guide slot 55 Third guide Slot 56 Upper convex column 57 Spring 58 Eleventh pivot part 6 Footrest 61 Link mechanism 62 Twelfth pivot part 63 Thirteenth pivot Part 64 Fourteenth pivot part 7 First operating rod 71 Fifteenth pivot part 72 Sixteenth pivot part 8 Second operating rod 81 Seventeenth pivot part 82 Eighteenth pivot part 1 'Base 11' Armrest frame 12 ' Guide bar 2 'Seat 21' Slide bush 22 'Pivot 3' Back 4 'Base 5' Seat 51 'Leg rest 52' Spring 6 'Back 61' Pivot

Claims (10)

Base and
A support plate provided above the base and perpendicular to at least one ground, a first guide slot is provided on a rear side of the support plate, and the first guide slot is downwardly directed from front to back. A support holder having an inclined slot portion,
With the backrest,
A rear portion is pivotally connected to the backrest so that the backrest can adjust a rearward tilt angle, at least one lower guide roller is provided at a position corresponding to the first guide slot at the rear, and at least one is provided at the front. A sheet provided with one front guide roller,
An operating plate is provided below the seat and is provided on at least one side of the support plate, and a second guide slot and a third guide slot are provided at a rear side and a front side of the operating plate, respectively. The second guide slot corresponds to the inclined slot portion of the first guide slot, and is provided on one side of the first guide slot, and connects the lower guide roller to the first guide slot and the second guide slot. An actuation holder, which is moved within two guide slots, and wherein the third guide slot has a different inclination from the second guide slot and can be joined with the front guide roller;
Both ends are a first operating rod pivotally connected to the support holder and the sheet, respectively, and when the first operating rod is extended, the lower guide roller is configured to move between the first guide slot and the second guide slot. The front guide roller may be located at a front portion of the third guide slot, and the lower guide roller may be located at the first position when the first operating rod is contracted. The front guide roller may be located at a rear portion of the third guide slot, and may be located at a rear portion of the first guide slot and the second guide slot. A first operating rod capable of lowering a rear end and capable of raising the front end of the seat upward;
A chair comprising: A lower slot portion is provided downwardly behind the inclined slot portion of the first guide slot,
The actuation holder is pivotally connected to the support holder;
Further, when the first operating rod moves the lower guide roller of the sheet to the lower slot portion in conjunction with the lower guide roller, the rear end of the sheet is lowered, and the operating holder can be rotated, and the sheet of the sheet can be rotated. The chair according to claim 1, characterized in that the front end is operated to lift upward. A second operating rod,
A bottom end of the backrest is pivotally connected to a rear of the seat;
The end of the second operating rod is pivotally connected to the backrest and the seat, respectively, and the backward tilt angle of the backrest can be adjusted by the second operating rod. Chair.   The seat further includes a footrest having a link mechanism, wherein the link mechanism is pivotally connected to the seat, and is capable of being folded forward when moved forward and unfolded when moved backward corresponding to the seat. The chair according to claim 1, characterized in that:   The chair of claim 1, further comprising at least one spring, wherein the spring is joined to the support holder and the actuation holder.   The seat includes two side bars, and a front bar and a rear bar are connected to each other on the front side and the rear side of the two side bars, respectively, and the support holder of the rear bar is provided. At least one rear guide post is provided at a position corresponding to the support plate, and each of the rear guide posts includes two plate bodies parallel to each other and capable of sandwiching the support plate and the operating plate. The chair according to claim 1, wherein the lower guide roller is provided at a lower position between the two plate members. A top edge of the first guide slot is parallel to a top edge of the support plate;
Further, an upper guide roller is provided at a position above the lower guide roller between the two plate bodies, and the upper guide roller can move along a top edge of the support plate. The chair according to claim 6, wherein: The support holder includes a horizontal column that is horizontal to the ground, a first pivot portion is provided above the horizontal column, and is provided on both sides of the horizontal column in a direction perpendicular to the ground. The lower slot portion is provided downward at a rear end of the inclined slot portion of the first guide slot, and a second pivot portion is provided below a front side of the support plate. Is provided,
The seat includes two side bars, and a front bar and a rear bar are connected to each other on the front side and the rear side of the two side bars, respectively, and the support holder of the rear bar is provided. Two rear guide posts are provided at positions corresponding to the two support plates, and each of the rear guide posts includes two plate members that are parallel to each other and that can sandwich the support plate and the operation plate. The lower guide roller is provided at a lower position between the two plate bodies, and the front bar is provided with two front guide plates facing downward, each of which can be joined to the front guide roller, A ninth pivot is provided behind the front bar,
The actuation holder comprises an actuation plate provided in two parallel and each side of the two support plates, wherein the two actuation plates are connected by a connecting rod, and below each actuation plate the A tenth pivot portion pivotally connected to the second pivot portion of the support plate;
At both ends of the first operating rod, there are provided a fifteenth pivot part and a sixteenth pivot part, which are respectively pivoted with the first pivot part of the support holder and the ninth pivot part of the seat. The chair according to claim 1, wherein the chair is provided. A second operating rod,
In addition, a third pivot portion is provided below both sides of the backrest, and a fourth pivot portion is further provided below the backrest,
At the rear ends of the two side bars of the seat, a fifth pivot portion is provided, which is pivotally connected to the third pivot portion of the backrest, respectively. A pivot portion is provided facing the center of the seat,
At both ends of the second operating rod, there are provided a seventeenth pivot part and an eighteenth pivot part, which are respectively pivoted with the eighth pivot part of the seat and the fourth pivot part of the backrest. And
A top edge of the first guide slot is parallel to a top edge of the support plate;
An upper guide roller movable along a top edge of the support plate is provided above the rear guide post,
The chair according to claim 8, wherein the third guide slot is parallel to the ground. Further including a footrest,
The front bar of the seat is provided with two sixth pivots and one seventh pivot,
The link mechanism of the footrest includes two twelfth pivot portions pivotally connected to the two eleventh pivot portions of the operation plate, and two thirteenth pivot portions pivotally connected to the sixth pivot portion of the seat. The chair according to claim 8, further comprising a pivot portion and a fourteenth pivot portion pivotally connected to the seventh pivot portion of the seat.

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