KR101198053B1 - Seat folding type chair and seat folding unit - Google Patents

Abstract

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a seat-standing chair having a low number of parts and easy assembly.
[Solution] One sheet 2, one leg 3, leg side bracket 5, seat side bracket 6, front and rear two pairs of link members and sheet 2 And a seat swing support means (7) which constitute a four-section link by the legs and the legs (3) to support the seat to swing between an approximately horizontal use position and an approximately vertical standing position, One of the front and rear two pairs of link members is one common link member 8 common to two left and right pairs, and the other one of the two front and rear two set link members constitutes two left and right two link members, respectively. And a one-shaped link member 9 having two link portions 9a to be combined with one shaft portion 9b for coupling the sheet-side ends of the link portions to each other. 1st bearing parts 6a and 2c are formed in back surface 2c, respectively, and a seat side The racket 6 is mounted on the rear surface 2c of the seat, so that the first bearing portion 6a of the seat side bracket moves the shaft portion 9b of the U-shaped link member 9 to the first bearing portion 2d of the rear surface of the seat. ) Is to close between.

Description

Seat standing chair and seat standing unit {SEAT FOLDING TYPE CHAIR AND SEAT FOLDING UNIT}

The invention relates to a chair combined with a student desk, such as a school, a conference hall, a theater chair, a viewing chair of a stadium, a chair for various work such as a drawing system, a chair for a vehicle such as a train, or a public facility such as a station or a park. The seat-standing chair used as various chairs, such as a stool, and the seat standing unit used for the seat-standing chair.

As a conventional seat-standing chair, for example, it is known that the applicant of the present application has disclosed in Patent Document 1, and the seat-standing chair is installed in a plurality of rows in combination with a desk in a classroom or an auditorium. Four sections are formed by two pairs of left and right link members, which are connected to the legs through the leg side brackets and connected to the lower surface of the seat of the front seat through the seat side brackets. The seat swings the seat of the front seat in a pendulum shape, with the seat virtually centered obliquely upward in front of the seat between the approximately horizontal use position and the approximately vertical standing position, and the standing position from the use position. It is supported between the leg side bracket and the left and right link members while supporting the back to move up toward By the spring lip, and is always urging the sheet toward a standing position.

This configuration allows the seat standing chair to follow the movement of the seat to the seating and standing motion of the person in a natural posture, so that the person can be detached and seated smoothly, and the seat is standing in the use position. Compared with the conventional seat standing chair which moves forward toward the position, even if the seat and desk are in the same position in the use position, the seat and the desk in the middle position between the use position and the stand position are wider. As a result, when a person is seated and wakes up, the body can be caught in an unnatural posture between the seat and the desk like a conventional seat standing chair.

Japanese Patent Laid-Open No. 4-367622

By the way, the inventors of the present application further researched the conventional seat-standing chair and found room for improvement as follows. That is, in the conventional seat-standing chair, in order to impart pendulum-shaped movement to the seat, the link members and the support members are supported by the four-member links formed of two left and right link members to support the seats. There is a problem that the number of parts of dedicated parts such as the shaft member and the bearing member increases, leading to a high manufacturing cost.

In addition, since it is necessary to interlock the left and right four links in order to smooth the movement of the seat, the left and right link members are fixed to a common shaft member inserted into the seat side or leg side brackets at the time of assembly of the chair. There was also a problem that the labor of assembly increased.

The present invention advantageously solves the problems of the conventional seat-standing chair, wherein the seat-standing chair of the present invention is provided with one seat, one leg, and a leg side bracket attached to the leg. Left and right together with the seat and the leg by means of two sets of left and right link members connecting one end to the leg and connecting the other end to the seat via the seat side bracket mounted on the back of the seat. A pendulum consisting of two four-section links, the pendulum having the four center links virtually centered at an upwardly obliquely forward position of the sheet between the approximately horizontal use position and the approximately vertical standing position. A sheet having a sheet rocking support means which swings in a shape and supports the back to move upward from the use position toward the standing position. In the standing chair, either one of the front and rear two pairs of link members of the seat swing support means is one common link member common to the left and right two pairs, and the front and rear two pairs of the front and rear seat swing support means The other of the link members integrally includes two link portions that respectively constitute the two right and left two link members, and one shaft portion extending in the left and right directions of the sheet to engage the sheet side ends of the link portions. It is one コ -shaped link member which has a 1st bearing part in each of the said seat side bracket and the back surface of the said sheet, The said seat side bracket is mounted in the back surface of the said sheet | seat, and the 1st bearing part of the said seat side bracket The shaft portion of the U-shaped link member is sandwiched between the first bearing portion on the rear surface of the sheet.

In addition, the seat standing unit for a seat standing chair of the present invention connects one end to the leg through a leg side bracket mounted on the leg, a seat side bracket mounted on the rear surface of the seat, and the leg side bracket. And two sets of left and right link members in the front and rear two pairs connecting the other end to the seat through the seat side bracket, and the two left and right link members in the two front and rear pairs together with the seat and the leg. The left and right two four-section links are formed, and the four-section links are used as the virtual center, with the sheet being approximately obliquely upward in front of the sheet between the approximately horizontal use position and the approximately vertical standing position. A seating machine for seat standing chairs which swings in the shape of a pendulum and supports the back to move upward from the use position toward the standing position. In the unit, any one of the front and rear two pairs of link members of the sheet swing support means is one common link member common to the left and right two pairs, and the front and rear two pairs of link members of the sheet swing support means. The other one of which has two link portions which respectively constitute the two right and left two link members and one shaft portion integrally extending in the left and right directions of the sheet and engaging the sheet side ends of the link portions. A shaped link member, wherein a first bearing portion is formed on each of the seat side bracket and the back surface of the seat, the seat side bracket is mounted on the back surface of the seat, and the first bearing portion of the seat side bracket is The shaft portion of the male link member is sandwiched between the first bearing portion on the rear surface of the seat.

According to the above-mentioned seat standing unit for seat standing chairs and seat standing chairs of the present invention described above, two pairs of left and right link members are formed by one set of front and rear two sets of two right and left four sections of the seat swing support means. Since it consists of a common link member and one U-shaped link member, the number of parts of dedicated parts, such as those link members and the shaft member and bearing member which support | supports it, can be reduced, and manufacturing cost of a chair can be made low.

In addition, it is necessary to interlock the four right and left links in order to smooth the movement of the sheet, and one common link member and one U-shaped link member in which the sheet side ends of the two link portions are coupled to the shaft portion, Since both the left and right four links are interlocked, at the time of assembling the chair, one common link member is connected to the back surface of the seat by the seat side bracket, and one U-shape is formed at the first bearing portion of the seat side bracket. Since the shaft portion of the link member only needs to be sandwiched between the first bearing portion on the rear surface of the seat, the labor of assembly can be reduced, and the manufacturing cost of the chair can be reduced in this respect as well.

Further, in the seat standing chair of the present invention, a second bearing portion is formed on the seat side bracket and the back surface of the seat, respectively, and the seat side bracket is mounted on the back surface of the seat, It is good also as a 2 bearing part clamping the support shaft formed in the said sheet side edge part of the said common link member with the 2nd bearing part of the back surface of the said sheet | seat. According to such a structure, since the support shaft formed in the seat side edge part of the common link member can also be connected to the back surface of a seat only by clamping between the 2nd bearing parts of the back surface of a sheet | seat in the 2nd bearing part of a seat side bracket. In this respect, the manufacturing cost of the chair can be reduced.

Moreover, in the seat standing chair of this invention, the standing spring which the one end part was hooked to the said common link member is inserted through the said support shaft, and the inside of the seat side bracket to the screw member inserted through the said seat side bracket from the outside. While the nut is screwed on, the rotation is restricted by the seat side bracket, the movement in the extension direction of the screw member is guided, and the other end of the standing spring may be caught by the nut. According to this configuration, the seat can be automatically returned to the standing position by the standing spring when the seated person leaves the seat, and the weight of the seat is different depending on the presence or absence of the pad, and the screw member is rotated to extend the nut to extend the screw member. Since the strength of the return force of the standing spring can be adjusted by moving in the direction, the strength of the return force of the standing spring can be easily set to an appropriate strength according to the weight of the sheet.

In the seat-standing chair of the present invention, the seat is frame-molded, and the seat-standing chair further includes one frame-shaped backrest, and the bracket which the backrest is integrally has on the leg. In combination, the backrest may be fixed to the leg. According to this structure, since the sheet is molded, the first bearing portion or the second bearing portion can be integrally formed on the back surface of the sheet, and since the backrest is also molded, the bracket can be integrally formed on the backrest. By reducing the number of points, the manufacturing cost of the chair can be reduced.

In the seat-standing chair of the present invention, an engaging hole is formed in the leg, and at least one of the leg side bracket and the bracket of the backrest is engaged with the engaging hole in the leg side bracket or the backrest. It may have a temporary holding member for temporarily holding the bracket of the. According to this structure, since the mounting member, such as a bolt, can be attached while temporarily holding the leg of the leg side bracket or the backrest to the leg by engaging the temporary holding member with the engaging hole of the leg, the leg to the leg Mounting of the side brackets and backrests can be facilitated.

In the seat-standing chair of the present invention, a foot having a width of 1/3 to 1/4 of the width of the seat may be fixed to the lower end of the leg. According to such a structure, since the foot is fixed to the floor surface, the stiffness of the legs in the lateral direction is increased, so that when a plurality of chairs are installed side by side, there is no need to form a penetrating member connecting the chairs to each other. By reducing the number of parts and the labor of assembly, the manufacturing cost of the chair can be reduced.

1 is a front view showing an embodiment of a seat-standing chair of the present invention in a state in which it is combined with a horizontally long desk.
Fig. 2 is a plan view showing the seat-standing chair of the above embodiment in combination with a horizontally long desk.
3 is a side view showing the seat-standing chair of the embodiment in a state combined with a horizontally long desk.
Fig.4 (a), (b) is a side view and a bottom view which show the shape of the seat of the seat standing chair of the said Example.
Fig.5 (a), (b), (c) are the top view, the back view, and the side view which show the shape of the backrest of the seat standing chair of the said Example.
It is a side view which shows the seat standing unit of the seat standing chair of the said Example in the state attached to the seat | seat.
7 is a side view showing the seat standing unit of the seat standing chair of the embodiment alone.
(A), (b), (c), (d), (e) are the top view, front view, side view, back view, and bottom view which show the shape of the leg side bracket of the seat standing chair of the said Example. to be.
9 (a), 9 (b) and 9 (c) are a plan view, a side view and a bottom view showing the shape of the seat side bracket of the seat standing chair of the embodiment.
Fig. 10 is an exploded explanatory view showing a method of connecting the common link member and the U-shaped link member to the leg side bracket of the seat standing chair of the embodiment.
Fig. 11 is a plan view showing a method of connecting the common link member and the U-shaped link member to the seat side bracket of the seat standing chair of the embodiment.
12 is an exploded explanatory view showing a configuration of a restoring spring to be attached to the leg side bracket of the seat standing chair of the embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail by the Example based on drawing. 1, 2 and 3 are front, plan and side views respectively showing one embodiment of the seat standing chair of the present invention in combination with a horizontally long desk. In the same manner as the conventional example described above, chairs are provided in a plurality of rows in combination with a horizontally long desk in a classroom, an auditorium, or the like.

Here, the seat of the front row (left of Fig. 2, 3) is fixed to the floor surface F while the desk 23 is fixed to the floor surface F alone, and the seat standing chair 1 is combined with the desk 23 in the rear row. The seat in the middle row (center in FIGS. 2 and 3) is fixed to the floor surface F, and the seat standing chairs 1 combined with the desks 23 in the rear row are lined up and down on the floor surface F. The seat of the last row (right side in FIGS. 2 and 3) is a seat standing chair with the desk 23 combined with the seat standing chair 1 of the front seat fixed to the floor surface F. (1) is fixed to the floor surface (F) alone, the seat standing chair (1) combined with the desk 23 and the seat standing chair (1) alone differ only in the configuration of the upper end of the leg. The other parts are similarly configured.

That is, the seat standing type chair 1 of this embodiment uses one seat 2, one backrest 3, and one leg 4, both in combination with the desk 23 and alone. Equipped. Further, the seat standing chair 1 of this embodiment has a leg side bracket 5 attached to the leg 4 and a seat side bracket 6 attached to the back surface 2c of the seat 2. And a seat standing unit 7 as a sheet swing support means, and the seat standing unit 7 forms the sheet 2 by two left and right four-section links, and the sheet 2 is centered in FIG. 3. Between the approximately horizontal use position shown in the chair 1 of the chair and the substantially vertical standing position shown in the chair 1 of FIG. 3 in FIG. And it supports so that a back may move up toward the said standing position from the said use position.

Fig.4 (a), (b) is a side view and a bottom view which respectively show the shape of the sheet | seat 2 of the seat standing chair 1 of the said Example, and the sheet | seat 2 here injects synthetic resin It is formed by molding, and has a sheet surface 2a having a deeper round shape according to a human body than a conventional sheet of plywood, and has a rib 2b for supporting the sheet surface 2a. (2c), and the ribs 2b of the rear surface 2c each have a semicircular first bearing portion 2d and an upper half portion as viewed from the side where the central axis extends in the left and right direction of the sheet 2, respectively. 2 bearing part 2e is formed. Moreover, the rib 2b of the back surface 2c is the two elasticity which is not shown in contact with the U-shaped link member mentioned later when the sheet | seat 2 moves to the said use position, and keeps the sheet | seat 2 in the use position. Two stopper support parts 2f which are rectangular recesses for fixing the stopper are also formed.

5 (a), 5 (b) and 5 (c) are a plan view, a rear view and a side view respectively showing the shape of the backrest 3 of the seat standing chair 1 of the embodiment, wherein the backrest 3 is shown here. Fig. 6A is a product formed by injection molding a synthetic resin, which has a support surface 3a having a deep round shape along a human body, and a rib for supporting the support surface 3a. 3b) and the back surface 3e which integrally has the bracket 3c couple | bonded with the rib 3b, and the columnar temporary holding | maintenance protrusion 3d as a temporary holding member which protrudes back from the inside of the bracket 3c. ), And the rib 3b of the back surface 3e extends horizontally along a plurality of sheets like a fin for heat dissipation.

6 and 7 are side views showing the state in which the seat standing unit 7 of the seat standing chair 1 of the above embodiment is attached to the seat 2 and each alone, wherein the seat standing unit 7 is here. In addition to the leg side bracket 5 and the seat side bracket 6, one common link member 8 and one U-shaped link member 9 for constituting the two left and right four-section links described above are provided. Have

(A), (b), (c), (d) and (e) are the top view, the front view, the side view, the back view, and the bottom view which respectively show the shape of the leg side bracket 5, Here, The leg side bracket 5 of the present invention is formed by casting an aluminum alloy, and on the front side, two points for the support shaft mounting portion 5a for the U-shaped link member 9 and two points for the common link member 8. Has a bearing portion 5b, and has a leg mounting portion 5c having a U-shaped cross section on the back side thereof, and a rest spring 10 shown in FIGS. 6 and 7 in the leg mounting portion 5c. 5d for attaching the screw, an opening 5e for projecting the return piece 11 mounted on the restoring spring 10 to the front side, and a temporary holding screw 12 as the temporary holding member shown in FIGS. 6 and 7. A screw portion 5f for attaching the recess is formed.

(A), (b) and (c) are the top view, the side view, and the bottom view which show the shape of the sheet | seat side bracket 6, Here, the sheet | seat side bracket 6 is injection-molded synthetic resin. 1st bearing part 2d and 2nd bearing of the back surface 2c of the said sheet | seat 2 in the state which this seat side bracket 6 fixed to the predetermined position of the back surface 2c of the sheet | seat 2 The semi-circular first bearing portion 6a and the second bearing of the lower half, respectively, as viewed from the side in which the central axis extends in the left and right directions of the seat 2, respectively forming circular bearings respectively facing the portion 2e. It has the part 6b, and has the arc-shaped press part 6c which functions with the 1st bearing part 6a, and hold | maintains the axial part 9b of the U-shaped link member 9. As shown in FIG.

In addition, the seat side bracket 6 has a screw hole 6d through which the standing force adjusting screw 13 shown in FIGS. 6 and 7 is inserted as a screw member, and the seat side bracket 6 in the screw hole 6d. ) The nut 14 for screwing in the standing force adjusting screw 13 inserted from the outer side (lower side in FIG. 9 (b)) and the inner side (upper side in FIG. 9 (b)) of the seat side bracket 6. The nut guide groove 6e for moving along the standing force adjusting screw 13 while regulating the rotation thereof, and one end 15a of the standing spring 15 shown in FIGS. 6 and 7 are adjacent to the guide groove 6e. The spring end guide groove 6f for moving along the standing force adjusting screw 13 and the seat side bracket 6 to the rear surface 2c of the seat 2 while keeping it in a locked state with respect to the nut 14. It has six bolt holes 6g for making.

6, 7 and 10, the common link member 8 is formed by flatly deforming one end of a straight round pipe, and is formed at the sheet side end 8a which is an end of the deformed side. The support shaft 16 is inserted through the through hole, and the support shaft 16 is engaged with the second bearing portion 6b of the seat side bracket 6, and the leg side end portion 8b, which is the other end, It is arranged between the bearing portions 5b at the two points of the leg side brackets 5 together with the spacers 17 and formed in the through holes formed at the bearing portions 5b and the spacers 17 and the leg side ends 8b, respectively. It is inserted into the leg side bracket 5 by the support shaft 18 screwed in and passed. In addition, two standing springs 15 each formed of a coil spring are inserted through the support shaft 16 protruding to both sides of the sheet-side end 8a via a sleeve 19, and these standing springs 15 The one end 15a of the hook is caught by the nut 14, and the other end 15b is hooked by a latching hole formed at each of a plurality of points on both sides of the sheet side end 8a.

In addition, as shown in FIGS. 6, 7 and 11, the U-shaped link member 9 is bent in a U-shaped round pipe to form two link portions 9a and the sheet 2 in the left and right directions. It is formed so as to have one shaft portion 9b that extends and engages the sheet 2 side ends of the link portions 9a integrally, and by welding the sleeve to both ends of the round pipe, the opposite side to the shaft portion 9b. The bearing part 9c of two points was formed in the edge part, and as shown in FIG. 10, the leg side bracket 5 carries the support shaft 21 which passed through the bushing 20 through these bearing parts 9c via the bush 20. As shown in FIG. While being pinched to the leg side bracket 5 by being screwed into two support shaft mounting portions 5a at two points, the shaft portion 9b is the first bearing portion of the seat side bracket 6 as shown in FIG. 6a) is pressed in and retained between the arc-shaped presses 6c. .

As shown in FIG. 6, when the sheet | seat standing unit 7 of such a structure is attached to the predetermined position of the back surface 2c of the sheet | seat 2 with the fixing screw, the sheet | seat side bracket 6 The first bearing portion 6a of the pinch is held so that the shaft portion 9b of the U-shaped link member 9 can freely rotate between the first bearing portion 2d of the rear surface 2c of the seat 2. In addition, the 2nd bearing part 6b of the seat side bracket 6 makes the support shaft 16 formed in the seat side edge part 8a of the common link member 8, the back surface 2c of the sheet 2; ) Is sandwiched so as to be freely rotatable between the second bearing portion 2d.

6 and 7, the base of the restoring spring 10 which consists of a leaf spring as shown in FIG. 12 is attached to the back side screw part 5d of the sheet | seat side bracket 6, The The opening of the seat side bracket 6 so that the return piece 11 mounted with the screw 11a at the distal end of the restoring spring 10 can contact the common link member 8 and return the seat 3 to the standing position. The felt 11b sticks to the front side from 5e, and the surface of the return piece 11 is stuck so that generation | occurrence | production of the noise at the time of the contact with the common link member 8 may be suppressed.着)

And the seat standing chair 1 of this embodiment fixes and mounts the leg side bracket 5 of the seat standing unit 7 by the fixing screw in the predetermined position of the leg 4, and the bracket of the backrest 3 is mounted. It is comprised by fixing by fixing screw to the predetermined position above the mounting position of the seat standing unit 7 of the leg 4 with 3c, and at the time of their attachment, the screw part of the back side of the seat side bracket 6 The back portion 3e of the backrest 3 is inserted with the head portion of the temporary holding screw 12 attached to the 5f into an engagement hole (not shown) formed in the leg 4 and squeezed to the edge sheet of the hole. The temporary holding projections 3d of the < RTI ID = 0.0 >) < / RTI > ) And the backrest 3 are temporarily held in a predetermined position. In addition, at the lower end of the leg 4, a substantially shielded foot 22 having a width of 1/3 to 1/4 of the width of the seat 2 is fixed.

The seat standing chair 1 of this embodiment connects one end to the leg 4 via the leg side bracket 5 attached to the leg 4 of the seat standing unit 7, and the seat 2. The sheet 2 and the two pairs of front and rear link members 8 and 9 in a front and rear two pairs connecting the other end to the seat 2 via the seat side bracket 6 attached to the rear surface 2c of Since the left and right two four-section links together with the legs 4 are supported, and the four-section links are used to support the sheets 2, the sheet 2 is generally between the approximately horizontal use position and the approximately vertical standing position. (2) It swings in the pendulum shape obliquely upward from the front position and moves toward the standing position from the use position, and moves rearward upward.

In addition, the standing position is easy for a person to push down the seat 3 with the buttocks, and the restoring spring 10 makes the return piece 11 of its tip end contact with the common link member 8 so as to contact the seat 3. It is established in the state slightly extended forward, and in this seat standing unit 7, the seat 2 is further pushed back against the restoring spring 10 by pressing the seat 2 backward from the standing position. ), The passage between the desk 23 and the seat 2 can be widened, and when the seat 2 is stopped pressing backward, the seat 2 is pushed back by the restoring spring 10 to Return to the standing position.

Therefore, according to the seat-standing chair 1 and the seat-standing unit 7 of this embodiment, since the movement of the seat 2 can be followed in the seating and standing motion of the person in a natural posture, the person is smooth. The seat 2 and the desk 23 in the use position, as compared to a conventional seat standing chair, which can be separated and seated, and further, the seat 2 moves forward from the use position to the standing position. Even when the intervals are the same, the distance between the seat 2 and the desk 23 at the intermediate position between the use position and the standing position is widened, so that a normal seat standing chair is used when a person is seated and stands up. As shown in FIG. 2, the human body can be eliminated in an unnatural body posture between the seat 2 and the desk 23.

Furthermore, according to the seat-standing chair 1 and the seat-standing unit 7 of this embodiment, two pairs of left and right link members are formed by two pairs of front and rear, which constitute two right-and-left four-row links of the seat standing unit 7. By constructing two common link members 8 and one U-shaped link member 9, the number of parts of the dedicated parts such as the link members 8 and 9 and the shaft members and bearing members supporting them are reduced, and the chair The manufacturing cost of (1) can be made low. In addition, as described above, since the front and rear two pairs of link members are constituted by one common link member 8 and one U-shaped link member 9, between the front and rear two pairs of link members and the left and right two pairs. The gap between the link members of the jaw, i.e., between the common link member 8 and the U-shaped link member 9 can be sufficiently large, so that a finger or You can almost or completely eliminate the possibility of things getting stuck.

In addition, in order to smooth the movement of the sheet, it is necessary to interlock the four right and left links, so that one common link member 8 also has shaft portions (2) side ends of the two link portions 9a. Since the one U-shaped link member 9 coupled with 9b) also interlocks the right and left four-section links, when the chair 1 is assembled, one common link member 8 is attached to the seat-side bracket 6. By connecting to the back surface 2c of the sheet 2 by means of the sheet, the shaft 9b of the one U-shaped link member 9 is connected to the sheet (in the first bearing portion 6a of the seat-side bracket 6). Since it only needs to be sandwiched between the 1st bearing part 2d of the back surface 2c of 2), the effort of assembly can be reduced and the manufacturing cost of the chair 1 can also be made cheap at this point.

In the seat-standing chair 1 and the seat-standing unit 7 of this embodiment, the second bearing portions 6b, 2e are formed on the seat-side bracket 6 and the back surface 2c of the seat 2, respectively. The seat side bracket 6 is attached to the rear surface 2c of the seat 2, and the second bearing portion 6b of the seat side bracket 6 is the seat 2 side end of the common link member 8. Since the support shaft 16 formed in the 8a can also be connected to the back surface 2c of the sheet 2 only by sandwiching it between the second bearing portion 2e of the back surface 2c of the sheet 2. In this respect, the manufacturing cost of the chair 1 can be reduced.

In addition, according to the seat standing chair 1 and the seat standing unit 7 of this embodiment, a standing spring 15 whose one end 15b is fastened to the common link member 8 is inserted into the support shaft 16. A nut 14 screwed inside the seat side bracket 6 to the standing force adjusting screw 13 passed through and inserted into the seat side bracket 6 from the outside is attached to the seat side bracket 6. The rotation is regulated and the movement in the extension direction of the standing force adjusting screw 13 is guided, and the other end 15a of the standing spring 15 is hung on the nut 14, so that the standing spring is at the seat of the seated person. The sheet 2 can be automatically returned to the standing position by the 15, and the weight of the sheet 2 is different depending on the presence or absence of the pad, and the nut 14 is rotated by rotating the standing force adjusting screw 13. The standing spring 15 by moving in the extension direction of the standing force adjusting screw 13. It can adjust the intensity of the return force, to facilitate the intensity of the return force of the standing spring 15, it can be set to a proper intensity according to the weight of the sheet (2). And in the seat standing chair 1 of this embodiment, the standing spring 15 is arrange | positioned inside the seat side bracket 6, and the seat 2 side edge part of the common link member 8 from the standing spring 15 is carried out. Since the load of the standing spring 15 was reduced by giving return torque to 8a, the standing spring 15 can be made more compact than before.

In addition, according to the seat standing chair 1 of this embodiment, the seat 2 is frame-molded, and the seat standing chair 1 is further provided with one backrest 3, which is frame-shaped, and is provided with a backrest. The back surface of the sheet 2 is formed by mold-forming the sheet 2 at the point where the bracket 3c which the 3 has integrally is coupled to the leg 4 and the back 3 is fixed to the leg 4. The first bearing portion 2d or the second bearing portion 2e can be integrally formed in 2c, and since the backrest 3 is also frame-molded, the bracket 3c can also be integrally formed in the backrest 3. Therefore, the manufacturing cost of the chair 1 can be reduced by reducing the number of parts.

Moreover, according to the seat standing chair 1 of this embodiment, the engaging hole is formed in the leg 4, and the bracket 3c of the leg side bracket 5 and the backrest 3 is connected to the said engaging hole. Since the temporary holding screw 12 and the temporary holding protrusion 3d are provided as temporary holding members which are held and temporarily hold them, the temporary holding screw 12 and the temporary holding protrusion 3d are hooked on the legs 4. Since the fitting member such as a bolt can be mounted while the leg side bracket 5 or the bracket 3c of the backrest 3 is temporarily held on the leg 4 by engaging with the alignment hole, the leg 4 The mounting work of the leg side bracket 5 or the backrest 3 to the side can be made easy.

And according to the seat standing chair 1 of this embodiment, the foot 22 of the substantially shield type which has the width of 1/3-1/4 of the width of the seat 2 in the lower end of the leg 4 is provided. In this fixed installation point, the stiffness of the leg 4 is increased by fixing the foot 22 to the floor surface F, so that the plurality of chairs 1 are installed side by side. Since there is no need to form a penetrating member connecting the chairs to each other, it is possible to reduce the number of parts and the labor of assembling, thereby reducing the manufacturing cost of the chair 1.

In addition, as shown in FIG. 3, when the chair 1 is comprised solely, a cap is formed in the upper end of the leg 4, and when the chair 1 is combined with the desk 23, the leg ( 4) Fix the top plate (天 板) 24 to the upper end of it.

As mentioned above, although demonstrated based on the example of illustration, this invention is not limited to the above-mentioned example, It can change suitably within the description range of a claim, For example, the common link member 8 and a U-shape The link member 9 can be replaced with the back and forth, and the material of each member can also be changed suitably as needed. Moreover, the desk combined with the chair 1 can also be changed into the thing of the narrow single person in the long desk 23 over multiple seats of an example of illustration.

In this way, according to the seat standing unit for seat standing chairs and seat standing chairs of the present invention, two sets of left and right link members in one pair of front and rear, which constitute two left and right four sections links of the seat swing support means, Since the link member and one U-shaped link member are constituted, the number of parts of the link member and the dedicated parts such as the shaft member and the bearing member supporting the link member can be reduced to reduce the manufacturing cost of the chair.

In addition, it is necessary to interlock the left and right four links in order to smooth the movement of the sheet. As a result, one common link member and one U-shaped link member in which the sheet-side ends of the two link portions are coupled to each other in the shaft portion Since the left and right four-section links are interlocked, at the time of assembling the chair, one common link member is connected to the rear surface of the seat by the seat side bracket, and one U-shape is formed at the first bearing portion of the seat side bracket. Since the shaft portion of the link member only needs to be sandwiched between the first bearing portion on the rear surface of the seat, the labor of assembly can be reduced, and the manufacturing cost of the chair can be reduced in this respect as well.

According to the seat standing unit of the present invention, by assembling the seat standing unit in advance, it is possible to easily manufacture a seat standing chair equipped with seats of different specifications on an order basis in a short period of time.

1: seat standing chair 2: seat
2a: sheet surface 2b: rib
2c: back side 2d: first bearing part
2e: 2nd bearing part 2f: stopper support part
3: backrest 3a: support surface
3b: rib 3c: bracket
3d: temporary holding protrusion 3e: back
4: Leg 5: Leg Side Bracket
5a: support shaft mounting portion 5b: bearing portion
5c: leg mounting portion 5d: thread portion
5e: opening 5f: thread
6 seat side bracket 6a first bearing part
6b: 2nd bearing part 6c: pressing part
6d: screw hole 6e: nut guide groove
6f: spring end guide groove 6g: bolt hole
7: seat standing unit 8: common link member
8a: sheet side end 8b: leg side end
9: co-shaped link member 9a: link portion
9b: shaft portion 9c: bearing portion
10: restoring spring 11: return piece
11a: screw 11b: felt
12: temporary holding screw 13: standing force adjusting screw
14: nut 15: standing spring
15a: one end 15b: the other end
16 support shaft 17 spacer
18: support shaft 19: sleeve
20: bush 21: support shaft
22: foot 23: desk
24: top plate F: floor surface

Claims (7)

1 sheet (2)
With one leg (4),
Before and after connecting one end to the leg via the leg side bracket 5 mounted on the leg, and the other end to the seat via the seat side bracket 6 mounted on the back surface 2c of the seat. By two pairs of right and left two pairs of link members 8 and 9, together with the sheet and the leg, two left and right four row links are formed, and the four sections are used for the sheet, and the sheet is horizontally used position And a seat swing support means for oscillating in a pendulum shape at an imaginary center at an obliquely upward position between the upright position of the seat and the upright position of the seat, and moving the back upwardly from the use position to the standing position. In the seat standing chair 1 to say,
Any one of said front and back two sets of link members of the said sheet | seat swing support means is one common link member 8 common to the said left and right two sets,
The other of the front and back two pairs of link members of the sheet swing support means includes two link portions 9a constituting the two left and right two link members, respectively, and extend in the left and right directions of the sheet. It is one U-shaped link member 9 which integrally has one shaft part 9b which couples the said sheet side edge parts of a part,
First bearing portions 6a, 2d are formed on the seat side bracket 6 and the back surface 2c of the seat 2, respectively.
The seat side bracket 6 is mounted on the back surface 2c of the seat 2, so that the first bearing portion 6a of the seat side bracket is adapted to the shaft portion 9b of the U-shaped link member 9, The seat standing chair, which is sandwiched between the first bearing portion (2d) on the rear surface of the seat. The method of claim 1,
Second bearing portions 6b and 2e are respectively formed on the seat side bracket 6 and the back surface 2c of the seat 2,
The seat side bracket 6 is attached to the back surface 2c of the seat 2, so that the second bearing portion 6b of the seat side bracket is formed at the seat side end of the common link member 8. A standing chair is characterized in that the support shaft (16) is sandwiched between the second bearing portion (2e) on the rear surface of the seat. The method of claim 2,
A standing spring (15) having one end (15b) is inserted into the support shaft (16) through the common link member (8),
The nut 14 screwed on the inside of the seat side bracket to the screw member 13 inserted through from the outside to the seat side bracket 6 is regulated by the seat side bracket and the rotation of the screw member The movement in the extension direction is guided,
The other end 15a of the standing spring is hung on the nut. The method of claim 1,
The sheet 2 is molded in a mold,
The seat standing chair (1) is further provided with one backrest (3) molded in a frame,
A seat standing chair, characterized in that the bracket (3c) which the backrest has integrally is coupled to the leg (4) so that the backrest is fixed to the leg. The method of claim 4, wherein
The leg 4 is provided with engaging holes,
At least one of the leg side bracket 5 and the bracket 3c of the backrest has a temporary holding member 12, 3d that is engaged with the engaging hole and temporarily holds the leg side bracket or the bracket of the backrest. Seat standing chair, characterized in that. The method of claim 1,
A leg standing chair having a foot 22 having a width of 1/3 to 1/4 of the width of the seat is fixed to the lower end of the leg. A leg side bracket 5 attached to the leg 4,
A seat side bracket 6 attached to the back surface 2c of the seat 2,
Two sets of left and right link members (8, 9) connected to one end to the leg via the leg side bracket (5) and to the other end to the other end to the seat via the seat side bracket (6). And
The right and left two pairs of link members in the front and rear two pairs constitute the two left and right four-section links together with the seat and the leg, and the four-section links form the sheet, and the sheet stands vertically with the horizontal use position. Seat standing unit for seat-standing chairs which swings in a pendulum shape at an imaginary center at an oblique upper position between the positions at an angle to the front of the seat, and supports to move rearwardly upward from the use position to the standing position (7 ),
Any one of said front and back two sets of link members of the said sheet | seat swing support means is one common link member 8 common to the said left and right two sets,
The other of the front and back two pairs of link members of the sheet swing support means includes two link portions 9a constituting the two left and right two link members, respectively, and extend in the left and right directions of the sheet. It is one U-shaped link member 9 which integrally has one shaft part 9b which couples the said sheet side edge parts of a part,
First bearing portions 6a, 2d are formed on the seat side bracket 6 and the back surface 2c of the seat 2, respectively.
The seat side bracket 6 is mounted on the back surface 2c of the seat 2, so that the first bearing portion 6a of the seat side bracket is adapted to the shaft portion 9b of the U-shaped link member 9, The seat standing unit for a standing chair according to any one of claims 1 to 6, which is sandwiched between the first bearing portion (2d) on the rear surface of the seat.

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