JP2014042653A - Flip-up seat type chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flip-up seat type chair capable of being stored as a semi-finished product and being flexibly adapted to manufacturing of products of various sizes with different widths.SOLUTION: In a flip-up seat type chair, a seat frame 13 configuring a seat together with a seat plate 12 includes: a pair of side seat frames 20 each extending in the front/back direction of a chair; and a front seat frame 22 and a rear seat frame 21, which are detachably attached to the pair of side seat frames 20 and extend in the width direction of the chair. Further, components, devices and the like configuring a flip-up mechanism for the chair are provided in a concentrated manner on the side seat frames 20 and also detachably provided on a seat support shaft 33. When manufacturing flip-up type chairs of various sizes with different widths, members detachably provided on the side seat frames 20 and the seat support shaft 33 are set as common components, and the seat plate 12, the front seat frame 22, the rear seat frame 21, the seat support shaft 33 and a rear cover 30 are changed to the ones with a desired width before assembling.

Description

  The present invention relates to a flip-up chair that is installed in a theater, a movie theater, a stadium, or the like, and is configured such that a seat is turned upright from a horizontal state when leaving the seat.

  Conventionally, in theaters, movie theaters, stadiums, etc., many chairs can be arranged on a fixed floor area, and the back side of the seat is rotatably supported by the chair body so that it can easily walk between the front and back of the chair, When the chair is not seated, a flip-up chair that is configured so that the seat can be raised from a horizontal state and the space between the front and back of the chair can be widened is used.

  For example, as shown in Patent Document 1, the seat-up type chair is formed by integrally forming a seat frame into a rectangular shape with four front and rear, left and right plate frames by bending a metal, and a seat support is provided at the rear portion of the seat frame. The shaft penetrates in the left-right direction, and both ends of the penetrated seat support shaft are fixed to the legs on both sides of the chair. Then, a spring is interposed between the seat support shaft and the seat frame, and the spring is always applied by the spring so that the seat frame rotates around the seat support shaft and the seat stands up. At the same time when the user leaves the seat, the front portion of the seat jumps up and stands up.

  Further, the seat frame of the flip-up chair configured as described above includes a lower limit stopper portion for stopping the seat at a lower limit rotation position which is a substantially horizontal seating position, and a non-facing seat that faces obliquely upward. Devices such as a rotation angle restricting member having an upper limit stopper portion that stops at the upper limit rotation position that is the seating position, and a damper mechanism that gently raises the seat against the biasing force of the spring can be attached. ing.

JP 2010-46253 A

  By the way, in theaters, movie theaters, stadiums, and the like, various upswing chairs with different dimensions, particularly widths, are installed according to the space and needs. As described above, the seat frame is integrally formed in a square shape with the four front, rear, left, and right plate frames, and the member for attaching the spring and the rotation angle regulating member, or the component constituting the damper mechanism is the seat support shaft, It is welded to the plate frames before and after the seat frame.

  Therefore, in the seat-up type chair of Patent Document 1 configured as described above, when manufacturing seat-up type chairs of various dimensions having different widths, the seat frames corresponding to the respective dimensions are formed by bending each time. In addition, it is necessary to weld the processed seat frame and seat support shaft with a spring, a rotation angle regulating member, a damper mechanism, etc., resulting in a large manufacturing burden and difficult product inventory. There is.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to make it possible to stock semi-finished products and to flexibly cope with the production of various dimensions having different widths. The aim is to provide a raised chair.

  In order to solve such a problem, the seat-up type chair (chair 1) according to the present invention has a seat (seat 10) that is seated from a substantially horizontal state when leaving the seat, as described in claim 1. A seat-up chair that is configured to stand up by rotating about a support shaft (seat support shaft 33), and a seat frame (seat frame 13) that supports a seating portion (seat plate 12) of the seat. ), A pair of side seat frames (side seat frame 20) extending in the front-rear direction, and a front seat frame (front seat frame 22) and rear seat extending in the lateral width direction detachably attached to the pair of side seat frames. The gist of the present invention is that the parts and devices that are configured with a frame (rear seat frame 21) and constitute a seat flip-up mechanism are collectively provided on the side seat frame.

  Accordingly, in the present invention configured as described above, when manufacturing a flip-up type chair having various dimensions with different widths, it is not necessary to form a seat frame corresponding to each dimension by bending, and the front seat frame. And it can cope very easily only by changing the length of the back seat frame.

  In addition, the side seat frame in which the parts and devices that constitute the seat flip-up mechanism are gathered is provided as a common part even when manufacturing seat-up chairs of various dimensions with different widths. Since it can be used, it can be stocked as a semi-finished product, which simplifies the manufacturing process and enables mass production. As a result, manufacturing cost can be reduced and manufacturing delivery time can be shortened. That is, the seat-up type chair according to the present invention can be stocked as a semi-finished product, and has a remarkable effect that it can flexibly cope with the manufacture of various dimensions having different widths.

  By the way, it may be difficult in terms of structure to provide all the parts and devices constituting the seat flip-up mechanism in the side seat frame. In such a case, the following is preferable. That is, the invention according to claim 2 is the seat-up type chair according to claim 1, wherein a part of the parts and devices constituting the seat-up mechanism is detachable from the seat support shaft. The gist is that it is provided.

  Therefore, in the present invention configured as described above, when manufacturing a seat-up type chair having various dimensions with different widths, the parts and devices constituting the seat-up mechanism that is detachably provided on the seat support shaft are shared. As a result, it is possible to deal with it by replacing only the seat support shaft.

  Here, the components constituting the seat flip-up mechanism may be as follows. In other words, the invention according to claim 3 is the seat-up type chair according to claim 2, wherein the component constituting the seat-up mechanism is constantly applied with an urging force for raising the seat. A member (coil spring 34), one of the side seat frames (the left seat frame 20), a first fastening member (bracket 35) for fastening one end of the biasing member, and the seat support shaft Is provided with a second fastening member (latching member 57) detachably provided on the seat support shaft for pivotably fastening the other end of the biasing member as the seat rotates. It is the gist.

  Alternatively, the parts constituting the seat flip-up mechanism may be as follows. That is, the invention according to claim 4 is the seat flip-up type chair according to claim 3, wherein the parts constituting the seat flip-up mechanism are configured to resist the biasing force of the biasing member. Is a buffer member (damper 36) that gently springs up, and a third fixing member that fixes one end of the buffer member to one or the other of the side seat frames (the left seat frame 20 or the right seat frame 20). (Bracket 37) and a fourth fixing member detachably provided on the seat support shaft, which rotatably attaches the other end of the buffer member to the seat support shaft as the seat rotates. The gist is that a member (fastening member 59) is provided.

  Therefore, in the inventions according to claims 3 and 4, the urging member and the buffer member as parts constituting the seat flip-up mechanism can be easily attached to the side seat frame and the seat. It can be detachably attached to the support shaft. The urging member according to claim 3 and the buffering member according to claim 4 may be configured by a single gas spring having both functions (biasing and buffering functions).

  Moreover, when the components which comprise the seat flip-up mechanism are provided, the following configuration is preferable. That is, the invention according to claim 5 is the seat-up type chair according to any one of claims 2 to 4, wherein at least one of the pair of side seat frames is provided with the rotation of the seat. Anti-rotation members (rotation prevention members 44a and 44b) for restricting the angle are provided, and the seat support shaft has upper limit stoppers (stoppers 45a and 45b) and lower limit stoppers (stoppers 45a and 45b) that engage with the rotation prevention members. ) Is detachably provided, and when the user is seated on the seat, the rotation prevention member abuts on the lower limit stopper, and the seat is stopped at the lower limit rotation position which is a substantially horizontal use position. On the other hand, when the user leaves the seat and the seat jumps and stands up, the rotation preventing member comes into contact with the upper limit stopper, and the seat is in the upper limit rotation position that is a non-use position that faces obliquely upward. To stop The gist.

  Therefore, in the present invention configured as described above, when the parts constituting the seat flip-up mechanism are provided, the rotation preventing member is provided on the side seat frame, and the upper limit stopper and the lower limit stopper are attached to and detached from the seat support shaft. By providing it freely, the rotation angle of the seat can be regulated to a desired angle, which is preferable. The upper limit stopper and the lower limit stopper may be provided integrally with each other, or may be provided separately.

  As in the invention described in claim 6, the upper limit stopper or the lower limit stopper described in claim 5 is the second fixing member described in claim 3 or the fourth fixing member described in claim 4. It is good to serve as well. According to this structure, the upper limit stopper or the lower limit stopper and the second fixing member or the fourth fixing member do not need to be separately detachably provided on the seat support shaft. The mounting work on the shaft is extremely easy, and the number of parts is reduced, so that inventory management is facilitated.

1 is an overall perspective view of a flip-up chair 1 according to the present embodiment. It is a disassembled perspective view of the seat-up type chair 1 concerning this embodiment. It is a four-plane figure of the seat 10 simple substance concerning this embodiment.

It is a three-view figure of the state in which the seat board 12 and the cushion 11 which comprise the seat 10 concerning this embodiment were assembled | attached. It is a four-plane figure of the seat board 12 concerning this embodiment.

It is a three-view figure of the seat frame 13 single-piece | unit which comprises the seat 10 concerning this embodiment. It is a disassembled perspective view of the seat plate 12 and the seat frame 13 concerning this embodiment. It is explanatory drawing which shows the state which attaches the bush 42 and stopper 45a, b to the seat support shaft 33 concerning this embodiment.

It is a perspective view which shows a state when attaching the seat board 12 concerning this embodiment to the seat frame 13. FIG. FIG. 4 is an enlarged CC sectional view in the vicinity of the left locking piece 12a in FIG. 3A and an enlarged DD sectional view in the vicinity of the locking piece 12b in FIG.

1. Configuration of Chair 1 A mode for carrying out the present invention will be described below with reference to the drawings. First, the overall configuration of the chair 1 will be described with reference to FIG. FIG. 1 is an overall perspective view of the chair 1. The chair 1 of this embodiment is roughly divided into a seat 10 on which a user is seated, a backrest 3, and a side member 5 that supports the seat 10 and the backrest 3.

  As shown in FIG. 1, the chair 1 is supported by the left and right side members 5 so that the rear side of the seat 10 is pivotable, and when the chair 1 is not seated on the chair 1, the seat 10 is automatically raised from a horizontal state (see FIG. 1). The chair 1 is a flip-up chair that can be moved from the state of the left chair 1 to the state of the right chair 1 and the distance between the front and back of the chair 1 can be increased. The side member 5 has a fixed portion 6 fixed to the floor or the ground with an anchor bolt or the like, and an upper portion of the side member 5 is an armrest portion 7. In addition, the side member 5 provided between the chairs 1 is used as the side member 5 for both the chairs 1. In FIG. 1, two chairs 1 are illustrated, but this number is not limited.

  Next, the configuration of the seat 10 will be described. FIG. 2 is an exploded perspective view of the chair 1. In the drawing, the cushion 11, the right side member 5 and the backrest 3 constituting the seat 10 are not shown. 3 is a four-view diagram of the seat 10 alone, FIG. 4 is a three-view diagram of the seat plate 12 and the cushion 11 constituting the seat 10, and FIG. 5 is a four-view diagram of the seat plate 12 alone. 6 is a three-sided view of the seat frame 13 constituting the seat 10, and FIG. 7 is an exploded perspective view of the seat plate 12 and the seat frame 13.

  The seat 10 is configured by assembling the cushion 11, the seat plate 12, the seat frame 13, and the back cover 30 shown in FIG. 2. First, the seat plate 12 assembled on the back side of the cushion 11 will be described. . The entire seat plate 12 is formed of an elastic member such as synthetic resin in a substantially rectangular shape, and is attached to the back surface side of the cushion 11 so as to support the cushion 11 as shown in FIG.

  As shown in the drawing, the seat plate 12 is provided with a plurality of grooves 14 that are formed in an arc shape so as to form a large number of concentric circles, and is provided symmetrically on the front end. A downward projecting plate 15 that supports (see FIG. 3) is provided in a projecting manner. In FIG. 5, (A) shows the seat plate 12 from the front side, (B) shows the seat plate 12 from the back side, (C) shows from the right side of (B), and (D) shows (B) The case where it sees from the back side is each shown, Moreover, in FIG. 5 (A)-(C), the upper surface of a paper becomes front and the downward direction becomes back. 4A to 4C conform to FIGS. 5B to 5D.

  Here, on the back side of the seat plate 12, there are four locking pieces 12a and 12b that are open in a substantially L shape and projecting downward, as shown in FIGS. It is arranged and provided. These locking pieces 12a, b have a function of locking the seat plate 12 to the seat frame 13 by locking to an engaging projection piece 20a and a folded piece 21a of the seat frame 13 described later. The pair of locking pieces 12b are provided in parallel on the rear side of the back surface of the seat plate 12 and a pair of locking pieces 12b.

  Further, as shown in FIGS. 2 and 7, the seat plate 12 is provided with notches 16a and 16b that are notched in a substantially rectangular shape at positions corresponding to the locking pieces 12a and 12b. The locking pieces 12a and 12b extend in a horizontal direction outward from the rectangular vertical piece 18a that vertically falls from the inner side of the four sides of the notches 16a and b, and from the lower end of the rectangular vertical piece 18a. The rectangular horizontal piece 18b is formed in an L shape, and the notches 16a and 16b are formed slightly larger than the rectangular horizontal piece (see FIGS. 4 and 5 and FIG. 10 described later). In the figure, reference numeral 17 is for fastening the seat plate 12 and the seat frame 13 with the tapping screws 24 (see FIGS. 3 and 6) after fixing the seat plate 12 to the seat frame 13 with the locking pieces 12a and 12b. This is a mounting hole. The mounting holes 17 are formed in the left and right edges on the front side of the seat plate 12 so as to substantially face the locking pieces 12b.

  Next, the structure of the seat frame 13 which becomes the principal part of this embodiment is demonstrated. As shown in FIG. 2, the seat frame 13 includes a pair of side seat frames 20 extending in the front-rear direction, and a front seat extending in the left-right direction (the lateral width direction of the chair 1) connecting the pair of side seat frames 20. The frame 22 and the rear seat frame 21 are formed in a rectangular shape with a large opening at the top and bottom (see FIGS. 6A and 7), and the side seat frame 20, the front seat frame 22 and the rear constituting the seat frame 13 The seat frame 21 is made of a metallic material. In FIG. 6, (A) shows the case where the seat frame 13 is viewed from the front side, (B) is a cross-sectional view taken along the line AA in (A), and (C) is B in (A). -B sectional drawing is shown, and in Drawing 6 (A)-(C), the upper part of a paper surface becomes the front and the lower part becomes the back. 3A to 3C are similar to FIGS. 6A to 6C, and FIG. 3D is a right side view of FIG.

  The front seat frame 22 is formed of a thin metal plate in a substantially U-shape that is shorter than the rear seat frame 21 in the vertical direction, and both ends of the folded pieces 22a and b facing inward of the seat frame 13 folded up and down. Are provided with attachment holes 23 for fixing to the side seat frame 20 with tapping screws 25 (see FIGS. 3 and 6). Further, a rounded surface 22 c is formed at the upper corner of the front seat frame 22, and the rounded surface 22 c is provided in accordance with the shape of the protruding plate 15 of the seat plate 12.

  The rear seat frame 21 which is longer in the vertical direction than the front seat frame 22 is formed in a substantially U-shape with a thin metal plate in the same manner as the front seat frame 22, and goes inward of the seat frame 13 folded up and down. At both ends of the folded pieces 21a, 21b, mounting holes 19 are formed for fastening to the side seat frame 20 with tapping screws 26 (see FIGS. 3 and 6). The above-described locking piece 12b of the seat plate 12 is locked to the folded piece 21a that is folded back on the upper side of the rear seat frame 21.

  The side seat frame 20 is formed of a metal plate that is thicker than the front seat frame 22 and the rear seat frame 21 and is formed in an elongated trapezoidal shape having a taper shape toward the front. A rectangular plate-like engagement protrusion 20a protruding inward is provided. The engaging protrusions 20a are adapted to be engaged and locked with the locking pieces 12a of the seat plate 12 described above from the front side. In addition, the front end side of this engagement protrusion 20a is formed in a taper shape so that the engagement piece 12a can be easily fitted.

  On the front side of the side seat frame 20, a front seat frame mounting portion 27 is formed which bulges inwardly of the seat frame 13 and fits with an end portion of the front seat frame 22. A mounting hole 28 that overlaps with the mounting hole 23 of the frame 22 is formed. Further, a receiving plate 29 is formed at the lower end of the front seat frame mounting portion 27 so as to extend stepwise toward the lower rear side and engage with the back cover 30 to lock the front end side of the back cover 30. ing.

  In addition, a rectangular plate-shaped fixing plate 31 protruding inward from the upper end of the side seat frame 20 is provided behind the front seat frame mounting portion 27. A mounting hole 32 is formed to overlap the mounting hole 17 of the plate 12 and fasten the seat plate 12 and the seat frame 13 with a tapping screw 24 (see FIGS. 3 and 6).

  In addition, a bracket 35 is provided behind the fixed plate 31 so as to protrude relatively wide in the vertical direction toward the inward direction of the seat frame 13 and to lock one end of a coil spring 34 described later. The bracket 35 is a member provided only on one side seat frame 20, and the other side seat frame 20 projects inward of the seat frame 13 at a position facing the bracket 35. A bracket 37 that locks one end of a damper 36, which will be described later, protrudes (the damper 36 is not shown in FIG. 7).

  On the other hand, at the rear end of the side seat frame 20, a substantially U-shaped rear seat frame mounting portion 38 that fits with the end portion of the rear seat frame 21 is formed. A mounting hole 39 that overlaps with the mounting hole 19 of the rear seat frame 21 is formed. Further, a fixing plate 41 for fastening the rear end side of the back cover 30 with a tapping screw 40 (see FIG. 3) is formed on the front side of the lower end of the rear seat frame mounting portion 38.

  In addition, a circular rotation hole 43 is formed in front of the rear seat frame mounting portion 38 so as to pass through a seat support shaft 33 which will be described later and to be fitted with a bush 42 which receives the seat support shaft 33. The rotation hole 43 is fitted to the bush 42 so that the side seat frame 20 can rotate around the bush 42.

  Further, at the periphery of the rotation hole 43, a rotation prevention member 44a is provided on the upper side and a rotation prevention member 44b is provided on the lower side so as to face each other with the rotation hole 43 interposed therebetween. The rotation blocking members 44a and 44b are members that restrict the rotation angle of the seat 10 by engaging with stoppers 45a and 45b attached to a seat support shaft 33 described later.

  The seat support shaft 33 is formed of a metal material in the shape of a square pipe, and attachment holes 51 for attaching stoppers 45a and 45b are formed on both ends thereof as shown in FIG. FIG. 8 is an explanatory diagram showing a state in which the bush 42 and the stoppers 45a and 45b are attached to the seat support shaft 33. Further, in FIG. 8, the mounting hole 51 on the right side of the seat support shaft 33, the bush 42, and the stoppers 45a and 45b are not shown.

  The stoppers 45a and 45b are made of a material such as metal. The stopper 45a is provided above the seat support shaft 33 and the stopper 45b is provided below the seat support shaft 33 so as to straddle the seat support shaft 33. ing. The stoppers 45a and 45b are provided with a mounting hole 52 and a female screw hole 50 that overlap with the mounting hole 51 of the seat support shaft 33. That is, the stoppers 45a and 45b are attached as shown in FIG. The bolt 53 is screwed through the hole 52 and the female screw hole 50 to be attached to the seat support shaft 33.

  The stopper 45a located on the upper left side of the seat support shaft 33 is integrally provided with a latching member 57 (see FIGS. 2 and 7) for pivotally mounting the rear end of the coil spring 34 on the right side surface thereof. That is, the coil spring 34 is fixed to the bracket 35 of the left side seat frame 20 whose front end is rotatable with a nut 58 and the rear end of a stopper 45a attached to the non-rotatable seat support shaft 33. The latch member 57 is fixed to the latch member 57 so as to be rotatable. In order to pivotally attach the rear end of the coil spring 34 to the hooking member 57, for example, a mounting hole is formed in the hooking member 57, and the hooking hole of the coil spring 34 is formed in the mounting hole. The rear end portion may be hooked.

  Here, the rear end of the coil spring 34 is above and on the rear side of the axis CL (the one-dot chain line in FIGS. 7 and 8) passing through the rotation axis of the left seat frame 20, that is, the center of the rotation hole 43 and the seat support shaft 33. It is fastened. By attaching the coil spring 34 in this way, as shown in the right chair 1 in FIG. 1, the coil spring 34 is in an initial state when the seat 10 is flipped up and stood up (the coil spring 34 stands up. 1), and is in a biased state (coil spring 34) when it is horizontal when the seat 10 is not lifted up, as shown in the left chair 1 of FIG. Is sufficiently stretched to the extent necessary to flip up the seat 10), thereby functioning as a biasing member so as to apply a biasing force to keep the seat 10 standing.

  On the other hand, the stopper 45a located on the upper right side of the seat support shaft 33 is integrally provided with a fastening member 59 (see FIG. 2) for pivotally mounting the rear end of the damper 36 on the left side surface thereof. In other words, the damper 36 is rotatably fixed to a bracket 37 of the right seat frame 20 whose front end is rotatable, and a stopper 45a attached to the non-rotatable seat support shaft 33 is fixed to the rear end thereof. Attaching member 59 is rotatably attached.

  Here, the rear end of the damper 36 is fixed on the lower side and the front side of the axis CL passing through the rotation axis of the left seat frame 20, that is, the center of the rotation hole 43 and the seat support shaft 33. The damper 36 is a known hydraulic damper device including a cylinder and a piston rod. In this embodiment, the damper 36 is attached in this manner, so that the damper 36 is the left chair 1 in FIG. As shown in Fig. 1, when the seat 10 is in a horizontal position where the seat 10 is not lifted up, the protruding amount of the piston rod from the cylinder is the shortest, and as shown in the right chair 1 in FIG. In some cases, the amount of protrusion of the piston rod from the cylinder gradually increases with the rotational movement, thereby functioning as a buffer member so that the seat 10 is gently lifted against the urging force of the coil spring 34.

  The bush 42 is formed of a resin material in a circular shape, and a through hole 54 having the same shape as the seat support shaft 33 is formed therein. In other words, the bush 42 fits the seat support shaft 33 in the through hole 54. The seat support shaft 33 is attached by penetrating them together. In addition, two locking pieces 55 projecting in the outer peripheral direction are provided on the inner side surface of the bush 42 so as to face each other with the through hole 54 interposed therebetween (see FIGS. 2 and 8). When the bush 42 is fitted into the rotation hole 43 of the side seat frame 20, the locking piece 55 is in contact with the side surface of the side seat frame 20 to prevent the bush 42 from slipping through the rotation hole 43. It is a member.

  As shown in FIG. 2, the back cover 30 is formed in a substantially rectangular shape with synthetic resin or the like so as to close the lower side of the opened seat frame 13, and receiving plates 29 of the side seat frame 20 are provided at both front ends thereof. A locking piece 60 that protrudes upward to engage with the boss 61 and a boss 61 that is fastened by a fixing plate 41 of the side seat frame 20 and a tapping screw 40 (see FIG. 3) project upward from both ends on the rear side. Yes. That is, the back cover 30 is attached to the side seat frame 20 by fastening the boss 61 with the fixing plate 41 and the tapping screw 40 while being engaged with the receiving plate 29 by the locking piece 60. ing.

  The side member 5 is made of a metallic material, and as shown in FIG. 2, a bearing member 63 that receives the end of the seat support shaft 33 projecting in the direction of the seat 10 and fits the seat support shaft 33 projects. It is installed. Further, the side member 5 presses the seat support shaft 33 fitted to the bearing member 63 from above, and fixes the seat support shaft 33 so as to sandwich the seat support shaft 33 with the bearing member 63, and the upper plate 64. And a cover member 65 attached to the bearing member 63. The bearing member 63, the upper plate 64, and the cover member 65 are provided with female screw holes 67 and mounting holes 68 and 69 that are overlapped with each other. The holes 68 and 69 are screwed with bolts 66 to be fixed to the side member 5.

2. Assembly of Chair 1 Next, the case of assembling the chair 1 configured as described above will be described with reference to FIGS. 9 is a perspective view showing a state where the seat plate 12 is attached to the seat frame 13, and FIG. 10 is an enlarged CC cross-sectional view of the vicinity of the locking piece 12a on the left side of FIG. It is expanded DD sectional drawing of the latching piece 12b vicinity of (A).

  First, to assemble the chair 1, as shown in FIG. 8, the mounting holes 51 of the stoppers 45 a and b and the female screw holes 50 are overlapped on the mounting holes 51 of the seat support shaft 33, and the mounting holes 51 and 52. The bolts 53 are screwed into the female screw holes 50 to attach the stoppers 45a and 45b to both end sides of the seat support shaft 33. Then, from the outside of both ends of the seat support shaft 33 to which the stoppers 45a and 45b are attached, the bush 42 is fitted through the seat support shaft 33 through the through holes 54 of the bush 42 and attached to the seat support shaft 33. At this time, the bush 42 is attached to the seat support shaft 33 such that the bush 42 is pushed in until the inner surface abuts against the right side surface of the stoppers 45a and 45b.

  Next, the left end of the front seat frame 22 is fitted to the front seat frame mounting portion 27 of the left seat frame 20, and the mounting hole 23 of the front seat frame 22 is overlaid on the mounting hole 28 of the side seat frame 20. The front seat frame 22 is attached to the left seat frame 20 by screwing a tapping screw 25 (see FIGS. 3 and 6). Next, the left end of the rear seat frame 21 is fitted to the rear seat frame mounting portion 38 of the left seat frame 20, and the mounting hole 19 of the rear seat frame 21 is overlapped with the mounting hole 39 of the left seat frame 20. 19, the tapping screw 26 (see FIGS. 3 and 6) is screwed to attach the rear seat frame 21 to the left seat frame 20. The order of assembling the front seat frame 22 and the rear seat frame 21 to the left seat frame 20 may be changed.

  Next, the left bush 42 attached to the seat support shaft 33 is rotatably fitted in the rotation hole 43 of the left seat frame 20, and the seat support shaft 33 penetrates the left seat frame 20 with its left end penetrating outward. Attach as shown. At this time, the seat support shaft 33 is attached to the left seat frame 20 so as to be pushed in until the locking piece of the bush 42 contacts the inner surface of the left seat frame 20. The seat support shaft 33 may be assembled to the left seat frame 20 and then the front seat frame 22 and the rear seat frame 21 may be assembled to the left seat frame 20.

  Next, according to the above assembly procedure, the seat support shaft 33 is attached to the right seat frame 20, and then the front seat frame 22 and the rear seat frame 21 are attached to the right seat frame 20. As a result, the seat frame 13 is pivotally supported by the seat support shaft 33 so as to be rotatable around the bush 42. Note that the seat support shaft 33, the front seat frame 22, and the rear seat frame 21 may be attached to the right seat frame 20 before the left seat frame 20.

  The above-described procedure for assembling the seat frame 13 may be as follows. That is, the left and right side seat frames 20, the front seat frame 22 and the rear seat frame 21 are assembled to complete a rectangular frame on the outer periphery of the seat frame 13, and then the seat support shaft 33 to which the bush 42 is attached is attached to the left and right side seat frames 20. By passing through the rotation hole 43 and finally attaching the stoppers 45a and 45b to the seat support shaft 33, the bushing 42 is fixed to the seat support shaft 33 and fitted into the rotation hole 43 so as to be rotatable. The frame 13 may be assembled.

  Next, the coil spring 34 is fixed to the latch member 57 provided at the left stopper 45a at the rear end thereof so as to be rotatable with the rotation of the seat frame 13, and the front end of the coil spring 34 is fixed to the left seat frame 20. The bracket 35 is fixed to the bracket 35 with a nut 58 so as not to rotate. Next, the damper 36 is fixed to the fixing member 59 provided at the right end stopper 45a at the rear end thereof so that the damper 36 can rotate as the seat frame 13 rotates, and the front end thereof is attached to the bracket of the right seat frame 20. It is fixed to 37 so that it can rotate. As a result, the coil spring 34 is provided so as to be rotatable about the fastening location of the retaining member 57 and the damper 36 is pivotable about the fastening location of the fastening member 59. In addition, the assembly order of the coil spring 34 and the damper 36 to the seat frame 13 may be changed.

  Next, as shown in FIG. 9 (in FIG. 9, the cushion 11 is not shown), the seat plate 12 assembled on the back side of the cushion 11 is connected to the left and right center of the seat plate 12. The seat plate 12 is directed to the seat frame 13 so that the stop pieces 12a and 12b are located in front of the engaging protrusion 20a of the seat frame 13, and the seat plate 12 is slid from the front to the rear as indicated by the arrow A. Move to do.

  Then, as shown in FIG. 10, the L-shaped locking pieces 12a and 12b projecting downward on the back side of the seat plate 12 and the engaging protrusions 20a and the folding pieces 21a of the seat frame 13 are formed. Is engaged, that is, the engaging protrusion 20a and the folded piece 21a are fitted into the gap (rectangular vertical piece 18a portion) between the rectangular horizontal piece 18b and the seat plate 12 body, and the engaging protruding piece 20a and the folded piece 21a are fitted. Is sandwiched between the rectangular horizontal piece 18b and the seat plate 12 main body.

  At this time, when the seat plate 12 is slid from the front to the rear with respect to the seat frame 13, the rectangular vertical piece 18 a of the locking piece 12 b comes into contact with the folded piece 21 a and the projection plate 15 comes into contact with the front seat frame 22. That is, the locking pieces 12 b (rectangular vertical pieces 18 a) and the protruding plate 15 have a function as positioning means for the seat plate 12 when the seat plate 12 is attached to the seat frame 13. Furthermore, since the front end side of the engaging protrusion 20a is formed in a tapered shape so that the engaging piece 12a can be easily fitted, the seat frame 13 can be simply slid in one direction. It can be very easily attached to the seat frame 13 with one touch.

  Next, when the engaging protrusions 20a and the folded pieces 21a are fitted to the locking pieces 12a, b, the mounting holes 32 of the fixing plate 31 of the seat frame 13 and the mounting holes 17 of the seat plate 12 are superposed. The seat plate 12 is fastened to the seat frame 13 by screwing the tapping screws 24 (see FIGS. 3 and 6) into the mounting holes 32 and 17. As a result, the seat plate 12 is firmly fixed to the seat frame 13.

  Next, when the seat plate 12 is fixed to the seat frame 13, the locking piece 60 of the back cover 30 is engaged with the receiving plate 29 of the seat frame 13, and the boss 61 of the back cover 30 is connected to the fixing plate 41 of the seat frame 13. The back cover 30 is attached to the seat frame 13 by fastening with the tapping screw 40. Thereby, the seat 10 is assembled. The order of assembling the seat plate 12 and the back cover 30 to the seat frame 13 may be changed.

  Next, when the seat 10 is assembled by assembling the seat plate 12 and the back cover 30 to the seat frame 13, both ends of the seat support shaft 33 protruding left and right from the seat frame 13 are fitted to the bearing members 63 of the side member 5. The upper plate 64 is disposed above the fitted seat support shaft 33, the seat support shaft 33 is sandwiched between the bearing member 63, and the cover member 65 is directed to the bearing member 63 so as to cover the upper plate 64 in this state. Accordingly, the bearing member 63, the upper plate 64, the female screw hole 67 of the cover member 65, and the mounting holes 68, 69 are overlapped and screwed with the bolt 66. Thereby, the seat 10 is assembled to the side member 5 and the assembly of the chair 1 is completed.

  Thus, when the user sitting on the chair 1 leaves the seat, the seat 10 stands up from the horizontal state by the urging force of the coil spring 34. That is, the coil spring 34 is caused by an urging force when restoring from a sufficiently extended urging state when the seat 10 is in a horizontal state to an initial state slightly extending when the seat 10 is in a standing state. The seat 10 is rotated and flipped up. At this time, the damper 36 cushions the urging force of the coil spring 34 and gently raises the seat 10.

  As shown in FIGS. 2, 7, and 8, when the user is seated on the chair 1, the rotation prevention member 44 a of the seat frame 13 contacts the rear surface of the stopper 45 a on the upper side of the seat support shaft 33. , The rotation prevention member 44b of the seat frame 13 abuts against the front surface of the lower stopper 45b of the seat support shaft 33, thereby stopping the seat 10 at the lowermost rotation position which is a substantially horizontal use position, When the seat 10 jumps and stands up, the rotation prevention member 44 a of the seat frame 13 contacts the rear surface of the stopper 45 b on the lower side of the seat support shaft 33, and the rotation prevention member 44 b of the seat frame 13 contacts the seat support shaft 33. The seat 10 is brought into contact with the front surface of the upper stopper 45a, and thereby the seat 10 is stopped at an upper limit rotation position that is a non-use position facing diagonally forward and upward.

  When changing the width of the chair 1, the chair 1 is disassembled in the reverse order of the assembly procedure described above, and the cushion 11, the seat plate 12, the front seat frame 22, the rear seat frame 21, the seat support shaft 33, the back What is necessary is just to make it replace | exchange and assemble the cover 30 to the thing of desired width.

3. Effects of the present embodiment As is clear from the above description, the seat-up type chair 1 according to the present embodiment includes a seat frame 13 and a pair of side seat frames 20 extending in the front-rear direction. Since it is composed of a front seat frame 22 and a rear seat frame 21 that are detachably attached to the side seat frame 20 and extend in the left-right direction (the lateral width direction of the chair 1), the seat-up type chairs of various dimensions with different widths are manufactured. In this case, it is not necessary to bend the seat frames corresponding to the respective dimensions by bending, and it can be dealt with very easily only by changing the lengths of the front seat frame 22 and the rear seat frame 21.

  Further, in the seat frame 13, parts, devices, and the like constituting the flip-up mechanism of the seat 10 are provided in a concentrated manner on the side seat frame 20, and are detachably provided on the seat support shaft 33. That is, the front seat frame mounting portion for attaching the front seat frame 22 to the side seat frame 20 that can be used as a common part in the seat frame 13 even when manufacturing the flip-up type chairs of various dimensions having different widths. 27, a receiving plate 29 for attaching the back cover 30, a fixing plate 41, an engaging protrusion 20a for attaching the seat plate 12, a fixing plate 31, a bracket 35 for attaching the coil spring 34, and a damper 36 for attaching A bracket 37, a rear seat frame mounting portion 38 for mounting the rear seat frame 21, a rotation hole 43 for mounting the seat support shaft 33, and rotation preventing members 44a and 44b for restricting the rotation angle of the seat 10 are gathered in advance. Is provided.

  On the other hand, the front seat frame 22 and the rear seat frame 21 that cannot be used as a common part are only plate frames formed in a substantially U-shape, and no parts or devices are attached, and are also used as common parts. The seat support shaft 33 that is not capable of being mounted is detachably provided with a bush 42 that receives the seat support shaft 33 and is rotatably fitted to the rotation hole 43, and stoppers 45a and 45b that regulate the rotation angle of the seat 10. In addition, the stoppers 45a and b are integrally provided with a locking member 57 for pivotally mounting the coil spring 34 and a locking member 59 for pivotally mounting the damper 36.

  Therefore, the seat-up type chair 1 according to the present embodiment configured as described above is related to the manufacture of the seat-up type chairs of various dimensions having different widths. The bush 42, the stoppers 45a, 45b, the latching member 57, and the fastening member 59 that are detachably provided on the side seat frame 20 and the seat support shaft 33, which are common parts provided in a collective manner, are stocked as semi-finished products. This simplifies the manufacturing process and enables mass production. As a result, the manufacturing cost can be reduced and the manufacturing delivery time can be shortened.

  That is, the seat-up type chair 1 according to this embodiment can be stocked as a semi-finished product member, and has a remarkable effect that it can flexibly cope with the manufacture of various dimensions having different widths.

  As mentioned above, although the seat-up type chair 1 concerning embodiment of this invention has been demonstrated based on drawing, a specific structure is not limited to what was shown in embodiment, The summary of this invention is shown. Any changes or additions within a range that does not deviate are also included in the present invention.

  For example, in the above-described embodiment, the coil spring 34 is used as an urging member that constantly applies the urging force of the seat 10, and the damper 36 is used as a buffer member that gently raises the seat 10 against the urging force of the coil spring 34. Although shown, this is not limited, and other urging members and buffer members having the same function may be used.

1 ... chair, 3 ... backrest,
5 ... side member, 6 ... adhering part,
7 ... armrests, 10 ... seats,
11 ... Cushion, 11a ... Front hanging part,
12 ... Seat plate, 12a, 12b, 55, 60 ... Locking piece,
13 ... seat frame, 14 ... groove,
15 ... Projection plate, 16a, 16b ... Notch,
17, 19, 23, 28, 32, 39, 51, 52, 68, 69 ... mounting holes,
18a ... rectangular vertical piece, 18b ... rectangular horizontal piece,
20 ... side seat frame, 20a ... engagement protrusion,
21 ... rear seat frame, 21a, 22a, 22b ... folded piece,
22 ... Front seat frame, 22c ... Earl surface,
24, 25, 26, 40 ... tapping screws, 27 ... front seat frame mounting part,
29 ... backing plate, 30 ... back cover,
31, 41 ... fixed plate, 33 ... seat support shaft,
34 ... Coil spring, 35, 37 ... Bracket,
36 ... damper, 38 ... rear seat frame mounting part,
42 ... Bush, 43 ... Rotating hole,
44a, 44b ... rotation blocking member, 45a, 45b ... stopper,
50, 67 ... female screw holes, 53, 66 ... bolts,
54 ... Through hole 57 ... Hanging member,
58 ... nuts, 59 ... fastening members,
61 ... Boss, 63 ... Bearing member,
64: upper plate, 65: covering member.

Claims (6)

When the user leaves the seat, the seat is a flip-up chair that is configured to stand up from a substantially horizontal state by rotating around a seat support shaft.
A pair of side seat frames extending in the front-rear direction, and a front seat frame and a rear seat frame extending in the lateral width direction detachably attached to the pair of side seat frames. Consisting of
A seat-up type chair characterized in that parts and devices constituting a seat-up mechanism are gathered and provided on the side seat frame.   2. The seat-up type chair according to claim 1, wherein a part of the parts and the device constituting the seat-up mechanism is detachably provided on the seat support shaft. The component constituting the seat flip-up mechanism is an urging member that applies an urging force to stand up the seat at all times,
A first fastening member that fastens one end of the biasing member to one of the side seat frames,
The seat support shaft is provided with a second fastening member that is detachably provided on the seat support shaft that pivotably fastens the other end of the biasing member as the seat rotates. The flip-up chair according to claim 2, wherein the chair is a flip-up chair. The component constituting the seat flip-up mechanism is a buffer member that gently lifts the seat against the biasing force of the biasing member,
A third fastening member for fastening one end of the buffer member to one or the other of the side seat frames;
The seat support shaft is provided with a fourth fastening member that is detachably provided on the seat support shaft that pivotably fastens the other end of the buffer member as the seat rotates. The flip-up chair according to claim 3, wherein the chair is a flip-up chair. At least one of the pair of side seat frames is provided with a rotation preventing member that regulates a rotation angle of the seat,
The seat support shaft is detachably provided with an upper limit stopper and a lower limit stopper that engage with the rotation preventing member,
When a user is seated on the seat, the rotation preventing member abuts on the lower limit stopper, and the seat is stopped at the lower limit rotation position which is a substantially horizontal use position,
On the other hand, when the user leaves the seat and the seat jumps and stands up, the rotation prevention member comes into contact with the upper limit stopper, and the seat is stopped at the upper limit rotation position that is an unused position facing diagonally forward and upward. The seat-up type chair according to any one of claims 2 to 4, characterized in that:   The upper limit stopper or the lower limit stopper according to claim 5 also serves as the second fastening member according to claim 3 or the fourth fastening member according to claim 4. .

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