JP2009189598A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair which is combined with a desk in a school or a lecture room of a company to constitute a system for a lecture, and allows at least a seat body to be slid and moved forward and backward, wherein the amount of backward sliding movement of the seat body can easily be adjusted. <P>SOLUTION: The chair includes the seat body 5 supported in a forward and backward slidable manner by a sliding mechanism 6 at the upper end of a leg post 4, wherein the backward sliding-moving amount of the seat body by the sliding mechanism is adjusted at a multi-step by a stopper mechanism 12. In particular, in the sliding mechanism, a receiving body 17 provided on the lower surface of the seat body 5 slides and moves back and forth with respect to a supporting body 15 provided at the upper end of the leg post, and the receiving body is resiliently biased forward with respect to the supporting body. The stopper mechanism 12 has a structure allowing a contact stopper member 44 mounted to the receiving body to stop by coming in contact with a part of a supporting body, so that the mounting position of the contact stopper member can be changed forward and backward to multi-levels. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a chair, and more particularly to a chair constituting a lecture system in combination with a desk in a lecture room of a school or a company.

  Patent Document 1 discloses a chair that is developed for use in a classroom of a school or a company, and has a base fixed to the floor and can be rotated back and forth around the lower end with respect to the base. And a seat body supported by a guide means provided at the upper end of the pedestal so as to be slidable back and forth. At least one of the base and the pedestal includes the leg. A pedestal urging member for urging the column to always rotate forward is provided, and the guide means urges the urging member to always slide forward with respect to the pedestal. A chair provided with a body biasing member is disclosed.

  This type of chair can be moved forward and retracted so that the backrest comes close to or abuts the tabletop when not seated, and the seat is slid forward so that it does not get in the way when passing or cleaning. The seat portion of the seat body can be pulled back to a use position that is substantially horizontal during use and can be seated. Here, if the backrest constituting the seat is highly rigid and does not displace backwards even if the seated person leans, the backrest and the rear It is possible to arrange the chair and the desk as designed so that a sufficient space can be secured between the top of the desk.

However, a seat that does not swing back and forth because the rigidity of the backrest portion is too high is not good for sitting comfort. Therefore, it is desirable that the seat body is configured such that the backrest portion swings back and forth elastically with respect to the seat portion, but in that case, between the backrest portion and the top plate of the back desk when seated. There is a risk of pinching your fingers. Therefore, in general, a sufficient interval is secured so as not to interfere with the top plate of the back desk in anticipation of the displacement of the backrest. However, depending on the distance between the front and back desks, there may be more space than necessary between the backrest of the chair and the top plate of the back desk. If the front / rear stroke of the seat is constant, the seating posture cannot have a sufficient margin. In other words, it is impossible to design optimally as a lecture system.
JP 2006-122460 A

  Therefore, in view of the situation described above, the present invention intends to solve a chair that constitutes a lecture system in combination with a desk in a lecture room of a school or a company, at least a seat that slides back and forth. Thus, it is to provide a chair capable of easily adjusting the amount of sliding movement of the seat body to the rear.

  In order to solve the above-mentioned problem, the present invention is a chair provided with a seat body supported at the upper end portion of the pedestal so as to be slidable back and forth by a slide mechanism, and the slide mechanism slides backward by the slide mechanism. The chair is characterized in that the amount is adjusted in multiple stages by a stopper mechanism (claim 1).

  Here, the slide mechanism is configured such that the support provided on the lower surface of the seat body slides back and forth with respect to the support provided on the upper end of the pedestal, and elastically attaches the support to the support forward. The stopper mechanism has a structure in which a stopper member attached to the receiver is in contact with a part of the support, and the attachment position of the stopper member is changed in multiple stages. It is preferable that it becomes possible (Claim 2).

  Further, the slide mechanism is provided with long sliders on both the left and right sides of the support provided at the upper end of the pedestal, and the slider can be slid on both the left and right sides of the receiver provided on the lower surface of the seat. The stopper member is provided with a stopper piece projecting on both sides of the main body substrate, and a plurality of pairs of through holes formed on both sides of the main body substrate. More preferably, the fixing member is detachably screwed to the receiver using a pair of through holes selected, and the sliders are fixed by positioning the both stopper pieces in the support rail. (Claim 3).

  It is more preferable that a buffer cap is fitted on both stopper pieces of the stopper member, the cap is positioned in the support rail, and the slider is stopped.

  The chair of the invention according to claim 1 as described above is a chair provided with a seat body supported at the upper end portion of the pedestal so as to be slidable back and forth by a slide mechanism, and the seat body is moved backward by the slide mechanism. Since the amount of slide movement is adjusted in multiple stages by the stopper mechanism, the amount of slide movement to the rear of the seat body can be easily adjusted, so that a lecture system can be combined with a desk in a school or corporate lecture room. Even in the case of the configuration, the slide movement amount can be optimally set according to the interval between the front and rear desks.

  According to a second aspect of the present invention, the slide mechanism is configured such that the receiver provided on the lower surface of the seat body slides back and forth with respect to the support provided at the upper end of the pedestal, and the receiver is moved relative to the support. The stopper mechanism has a structure in which a stopper member attached to the receiver stops against a part of the support body, and the attachment position of the stopper member is changed back and forth. Since it can be changed in multiple stages, when the seat is slid backward against the elastic biasing force when seated, the stopper member attached to the receiver stops against a part of the support. The above-mentioned rearward movement can be reliably controlled, and the amount of slide movement to the rear of the seat body can be easily adjusted by simply changing the mounting position of the stopper member, which is optimal for various usage modes. Can be set to

  According to claim 3, sliders provided on the left and right sides of the support are slidable on the support rails provided on the left and right sides of the receiver, and both stopper pieces of the stopper members attached to the receiver on the left and right sides are provided. Since the structure is designed to stop the slider against both sliders, the right and left balance is good, and the rearward movement can be reliably controlled. Since it has a simple structure in which a plurality of pairs of through holes are formed on both sides of the substrate, it is inexpensive and highly reliable.

  According to the fourth aspect of the present invention, a shock absorbing cap is fitted to both stopper pieces of the stopper member, the cap is positioned in the support rail, and the slider is stopped. Can prevent damage to the slider and increase durability.

  Next, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 shows an embodiment in which a lecture system used in a classroom of a school or a company is constructed by combining a chair that can be tilted back and forth that employs the present invention and a desk. Is a desk, 3 is a base body, 4 is a pillar, 5 is a seat, 6 is a slide mechanism, 7 is a seat, and 8 is a backrest.

  The chair 1 of the present embodiment includes a base body 3 fixed to the floor surface F, a vertically long pedestal 4 pivotally attached to the base body 3 so as to be able to tilt back and forth around the lower end, and the pedestal. The seat 5 is supported by a slide mechanism 6 provided at the upper end of 4 so as to be slidable back and forth, and the seat 5 is integrally provided at the upper rear end of the seat 7 and elastically swings in the front-rear direction. Possible backrest 8. The pedestal 4 is always elastically biased so as to tilt forward, and the seat body 5 is also always elastically biased so as to slide forward.

  The desk 2 used in combination with the chair 1 includes a top plate 9 that is horizontally long in a plan view, and a pair of left and right support legs 10 and 10 that support the top plate 9 from below. The attachment body 11 solidified by welding or the like at the lower end of each support leg 10 is firmly fixed to the floor surface F with anchor bolts (not shown), so that each support leg 10 is obliquely forward with respect to the floor surface F in a side view. It stands upright in an inclined shape. These desks 2 are lined up at a predetermined interval in the front and rear. A plurality of chairs 1,... Are installed between the desks 2 and 2 arranged in the front and rear with a predetermined interval on the left and right. The floor surface F has a staircase shape, and the height of the top plate 9 and the seat body 5 of the chair 1 increases as it goes rearward.

  Here, in order to maximize the capacity of the lecture room, the distance between the front chair 1 and the rear desk 2 is set to a minimum, but when the backrest 8 of the front chair 1 tilts backward. In addition, it is necessary to secure a gap S between the rear end of the backrest 8 and the front end of the top plate 9 of the rear desk 2 so that it is not finger-filled. In addition, the space | interval of the front and back desks 2 and 2 is variously set from the narrowest aspect in order to ensure the largest accommodating number of people to the aspect which has the allowance which ensured sufficient passage and the front and back space. Therefore, in the present invention, the sliding movement amount of the seat body 5 to the rear by the slide mechanism 6 can be adjusted in multiple stages by the stopper mechanism 12. When the chair 1 is not seated, the chair 1 is tilted forward and the seat 5 is slid to the front end and approaches the desk 2, and there is sufficient space between the chair 2 and the back desk 2. A passage can be secured.

  As shown in FIG. 2, the chair 1 according to the present invention attaches the seat body 5 to a slide mechanism 6 provided at the upper end portion of the pedestal 4 via an attachment member 13, and the slide mechanism 6 and the attachment. The member 13 is covered with a cover 14. And the said seat body 5 shape | molds a plywood in three dimensions, forms the seat part 7 and the backrest part 8 integrally, and the backrest part 8 rocks | fluctuates back and forth elastically with respect to this seat part 7. It is configured to do.

  In more detail, the chair 1 which concerns on this invention is demonstrated based on FIGS. The slide mechanism 6 is provided with long sliders 16, 16 on the left and right sides of the support 15 provided at the upper end of the pedestal 4, and the sliders 16, 16 on the left and right sides of the receiver 17 provided on the lower surface of the seat body 5. 16 is provided with support rails 18 and 18 slidable along the support rail 18, and an auxiliary rail 19 having an upper plate 19 </ b> A and a lower plate 19 </ b> B is provided along the support rail 18. The rollers 20, 20 that are elastically urged to the left and right sides of the support 15 so as to be swingable up and down are allowed to roll within the auxiliary rail 19, and the rollers 20 are supported by the seat 5 and the backrest. 8 is elastically urged in a direction in which it tilts forward, and is in pressure contact with the upper plate 19A or the lower plate 19B of the auxiliary rail 19. The slider 16 may be a plurality of short sliders arranged in the front-rear direction.

  As shown in FIG. 3 to FIG. 10, posture control members 21 and 22 provided with rollers 20,... The member 21 is elastically biased against the support 15 so that the rollers 20, 20 are pressed against the lower plate 19 </ b> B of the auxiliary rail 19, and the posture control member 22 on the rear side has the rollers 20, 20 connected to the auxiliary rail 19. The support 15 is elastically biased so as to be in pressure contact with the upper plate 19A.

  More specifically, as shown in FIGS. 3 and 4, the support body 15 is formed with flange portions 24, 24 on the left and right upper edges of the box-shaped main body portion 23, and the flange portions 24, 24 are laterally formed. Sliders 16 and 16 are fitted so as to protrude. The main body 23 of the support 15 has side plates 26, 26 bent upward on both sides of the bottom plate 25, and the flange portions 24, 24 are bent outward at the upper edges of the side plates 26, 26. Further, the fixing plate 27 is fixed to the upper part between the both side plates 26, 26, and the upper ends of the leg posts 4 are fitted into the openings 28, 28 formed in the bottom plate 25 and the fixing plate 27 and welded. It is connected. Here, in this embodiment, the leg column 4 is tiltable forward and backward with respect to the base body 3 and elastically biased in the forward tilt direction. The leg column 4 is fixed to the base body 3. It doesn't matter.

  The front posture control member 21 is a front-viewed U-shape having a connecting plate 29 and standing plates 30, 30 along the bottom plate 25, both side plates 26, 26 of the main body 23, and a compatible raising plate 30. , 30 are attached to the outer side of the front end portion, and the rear portions of the co-raising plates 30, 30 are attached to the side plates 26, 26 of the main body portion 23 so as to be vertically swingable by horizontal support shafts 31, respectively. Compression springs 32 and 32 are interposed between the bottom plate 25 and the connection plate 29 of the main body 23 at a position forward of the support shaft 31. On the other hand, the posture control member 22 on the rear side has a U-shaped in a front view having a connecting plate 33 and rising plates 34, 34 along the bottom plate 25 and the side plates 26, 26 of the main body portion 23. , 34 can be mounted on the outer side of the rear end portion thereof, and the front and rear center portions of the co-raising plates 34, 34 can be vertically swung on the side plates 26, 26 of the main body portion 23 by horizontal support shafts 35, respectively. Further, compression springs 36 and 36 are interposed between the bottom plate 25 and the connecting plate 33 of the main body 23 at a position forward of the support shaft 35. In this embodiment, a helical spring is used as the compression springs 32 and 36 so that the compression springs 32 and 36 can be mounted in a narrow space. However, a leaf spring or a rubber sheet is used, or a bottom plate 25 of the main body 23 is used. When a sufficiently wide space can be secured between the connecting plates 29 and 33, a normal compression coil spring may be used. Furthermore, although a tension coil spring may be used, in that case, it is provided on the opposite side to the compression spring with respect to the support shaft.

  Further, as shown in FIGS. 3 and 8, the receiver 17 has an attachment plate 37 for attaching to the lower surface of the seat body 5 via the attachment member 13 at the upper portion. Both side plates 38, 38 are fixed downward on both sides, a space for receiving the support 15 is formed between the side plates 38, 38, and the slider 16 is slid on the inner surface side of the side plates 38, 38. A rail member 39 having rails 18 and 18 integrally provided on both sides is fixed, and an auxiliary rail 19 for rolling the rollers 20. Specifically, a rail member 39 having support rails 18 and 18 having U-shaped cross-sections with inward concave grooves is fixed to a position along the lower surface of the mounting plate 37 at the upper end on the inner surface side of the side plate 38. The slider 16 is slidably received in the concave groove of the support rail 18 so as to be slidable back and forth. Further, the lower plate 19B of the auxiliary rail 19 is formed by bending inwardly at the lower edge of the side plate 38, and the lower plate of the support rail 18 is formed as the upper plate 19A of the auxiliary rail 19, An auxiliary rail 19 is configured to receive and roll the rollers 20,.

  Further, the portions near the center of the connecting plates 29 and 33 of the front and rear posture control members 21 and 22 form notches 40 and 40 for receiving the leg posts 4, respectively. Then, as shown in FIGS. 8 to 10, the sliders 16 and 16 are slidably engaged with the support rails 18 and 18, and the rollers 20 and 20 on both sides are inserted into the auxiliary rails 19, respectively. A front plate 41 standing at the front end of the bottom plate 25 of the support 15 and a hanging end at the rear end of the mounting plate 37 of the receiver 17 at positions on both sides of the pedestal 4 between the bottom plate 25 and the fixed plate 27. A pair of tension coil springs 43, 43 having end portions engaged with the rear plate 42 are disposed, and the receiving body 17 (seat body 5) is always elastically biased forward with respect to the support body 15. ing. Here, it is preferable that the elastic biasing direction by the tension coil spring 43 and the sliding direction by the slider 16 and the support rail 18 are substantially matched to realize a smooth operation.

  As shown in FIG. 9, the seat body 5 is normally located in the forefront by the elastic biasing force of the tension coil springs 43, 43. In this state, the both side rollers 20 and 20 of the front posture control member 21 press the lower plate 19B of the auxiliary rail 19 by the elastic biasing force of the compression springs 32 and 32, and both side rollers 20 and 20 of the rear posture control member 22 20 presses the upper plate 19A of the auxiliary rail 19 by the elastic urging force of the compression springs 36, 36, and is elastically urged in a direction in which the seat body 5 and the backrest 8 are inclined forward. Then, when sitting on the seat body 5, if it is pulled backward while holding the upper end portion of the backrest portion 8, the seat body 5 resists the elastic biasing force of the tension coil springs 43, 43 as shown in FIG. 10. And move backward.

  Next, the stopper mechanism 12 will be described with reference to FIGS. The stopper mechanism 12 is a front portion of the receiving body 17, and a main body substrate 45 of the stopper member 44 is attached between the support rails 18 and 18 so that the front and rear positions can be changed, and on both sides of the main body substrate 45. Each of the protruding stop pieces 46 and 46 is positioned inside the corresponding support rails 18 and 18 to stop the sliders 16 and 16. Specifically, a cap 47, 47 made of a synthetic resin or a synthetic rubber for buffering is fitted to each of the stopper pieces 46, 46 of the stopper member 44. The caps 47 and 47 can be omitted. However, in order to prevent the sliders 16 and 16 from being damaged, it is preferable to fit the cap 47 to the stopper piece 46.

  More specifically, the main body substrate 45 of the stopper member 44 has a rectangular shape in plan view, and has through holes 48 formed at three locations, the center of both side portions and the front and rear end portions, respectively. The abutting pieces 46 and 46 are projected from a position eccentric from the front and rear center. On the other hand, the receiver 17 is formed with a pair of left and right mounting holes 49 and 49 so as to penetrate the mounting plate 37 and the rail member 39. The stopper member 44 is positioned on the lower surface of the rail member 39, the stopper pieces 46, 46, that is, the caps 47, 47 are positioned in the support rails 18, 18, and any of the through holes 48,. A pair is selected, the positions of the selected through holes 48 and 48 and the mounting holes 49 and 49 are aligned, fixing screws 50 and 50 are inserted into both, and nuts 51 and 51 are screwed and attached. Here, two or more pairs of the through holes 48, 48 are provided in the main body substrate 45. However, if a large number of the through holes 48, 48 are provided, the front and rear dimensions of the main body substrate 45 become long, and depending on the position where the stopper member 44 is attached, It is preferable to provide three pairs as in this embodiment.

  Since the slide mechanism 6 and the stopper mechanism 12 are configured in this manner, the seat body 5 and the receiving body 17 are slid rearward against the support body 15 against the elastic biasing force of the coil springs 43 and 43. Then, as shown in FIG. 10, the caps 47, 47 of the stopper member 44 stop against the sliders 16, 16, and the movement stops. As shown in FIG. 6, the stopper member 44 can be attached at three front and rear positions by selecting three pairs of front and rear through holes 48, 48, whereby the positions of the stopper pieces 46, 46 are 3 Can be changed on the street. Furthermore, as shown in FIG. 7, the position of the stopper pieces 46, 46 can be changed to three different positions from the above-mentioned positions by attaching the stopper member 44 so as to be reversed. Accordingly, by providing the stopper pieces 46, 46 at positions eccentric with respect to the front-rear center of the main body substrate 45, six positions can be set. In other words, the amount of sliding movement of the seat body 5 to the rear can be adjusted in multiple stages by changing the way in which the stopper member 44 is attached.

  The mounting member 13 has outward flange portions 53, 53 stepped downward on both sides of the substrate 52, and both sides of the mounting plate 37 of the receiver 17 are joined to the lower surface of the substrate 52. The spacers 55,... Projecting from the four corners of the upper surface of the substrate 52 are connected to the lower surface of the seat portion 7 of the seat body 5 with screws (not shown). Here, by using the spacers 55,..., It is possible to connect even if the lower surface of the seat portion 7 of the seat body 5 is curved.

  The cover 14 is a bowl-shaped bowl that is made of synthetic resin and is integrally formed and opened upward. The cover 14 has an opening 56 for receiving the pedestal 4 on the lower surface, and steps 57 and 57 in the middle of both sides. Yes. And the step part 57,57 of the said cover 14 is attached with the screw | thread 58, ... from the downward direction in the state joined to the flange part 53,53 of the said attachment member 13. FIG. Here, a gap is formed between the upper edge 59 of the cover 14 and the lower surface of the seat portion 7 so that no finger can enter, and the cover 5 is deformed even when the seat body 5 is deformed when seated. 14 so that no abnormal noise is generated.

  Further, as shown in FIGS. 3, 4, 9 and 10, a protrusion 60 is formed on the rear side of the fixing plate 27 constituting the main body 23 of the support 15, and a synthetic rubber is formed on the protrusion 60. When the shock absorber 61 made of a material is fitted and the seat body 2 is slid to the front end by the elastic force of the tension coil spring 43, the rear plate 42 hangs down on the rear end of the receiver 17 on the shock absorber 61. Is to be stopped. Accordingly, when the seat body 5 suddenly stands up from the seating state where the seat body 5 is located at the rear end and becomes free, even if the seat body 5 slides forward vigorously by the elastic force of the tension coil spring 43. Since the rear plate 42 is abutted against the buffer 61, the impact is reduced and no collision noise is generated.

It is a partial side view of the system for lectures using the chair concerning the present invention. It is a disassembled perspective view of the chair which concerns on this invention. It is a disassembled perspective view which shows a slide mechanism. It is a disassembled perspective view which shows a support body and a posture control member. It is a partial exploded perspective view which shows a receiver and a stopper mechanism. It is a fragmentary sectional view which shows the attachment state of a stop member. It is a fragmentary sectional view which shows the attachment state of the locking member reversed front and back. It is a vertical front view of the slide mechanism in the assembled state. Similarly, it is a longitudinal side view of the slide mechanism in a state where the seat body is located in the forefront. It is a vertical side view of the slide mechanism in a state where the seat is also located at the rear end.

Explanation of symbols

1 chair, 2 desks,
3 base body, 4 pedestal,
5 Seat, 6 Slide mechanism,
7 seats, 8 backrests,
9 top plate, 10 support legs,
11 Mounting body, 12 Stopper mechanism,
13 mounting member, 14 cover,
15 support, 16 slider,
17 receiving body, 18 support rail,
19 auxiliary rails, 20 rollers,
21 posture control member, 22 posture control member,
23 body part, 24 flange part,
25 bottom plate, 26 side plate,
27 fixing plate, 28 opening,
29 Connecting plate, 30 Standing plate,
31 spindles, 32 compression springs,
33 connecting plate, 34 raising plate,
35 spindles, 37 mounting plates,
38 side plate, 39 rail member,
40 notches, 41 front plate,
42 rear plate, 43 tension coil spring,
44 stopper member, 45 body substrate,
46 stop piece, 47 cap,
48 through holes, 49 mounting holes,
50 fixing screws, 51 nuts,
52 substrate, 53 flange,
54 screws, 55 spacers,
56 openings, 57 steps,
58 screws, 59 top edge,
60 protrusions, 61 shock absorbers,
F floor, S gap.

Claims (4)

  A chair provided with a seat body supported at the upper end of the pedestal so as to be slidable back and forth by a slide mechanism, wherein the sliding movement amount of the seat body to the rear by the slide mechanism is adjusted in multiple stages by a stopper mechanism. Characteristic chair.   The slide mechanism is configured such that a support provided on the lower surface of the seat body slides back and forth relative to a support provided on the upper end of the pedestal, and elastically biases the support forward with respect to the support. The stopper mechanism has a structure in which a stopper member attached to the receiver stops against a part of the support body, and the attachment position of the stopper member can be changed in multiple stages. The chair according to claim 1.   The slide mechanism is provided with long sliders on both the left and right sides of the support provided at the upper end of the pedestal, and support rails on which the slider can be slid on the left and right sides of the receiver provided on the lower surface of the seat body. The stopper member is provided with a stopper piece projecting on both sides of the main body substrate, and a plurality of pairs of through holes formed on both sides of the main body substrate. The chair according to claim 2, wherein the pair of through-holes selected is used to detachably screw the receiver, and both the stopper pieces are positioned in the support rail to stop the slider. . The chair according to claim 3, wherein a buffering cap is fitted to both stopper pieces of the stopper member, the cap is positioned in the support rail, and the slider is stopped.

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