JP2006304907A - Fabric-made legless chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fabric-made legless chair with a seat made of a general cloth of which the height is arbitrarily adjustable by a simple mechanism and operation. <P>SOLUTION: A seat cloth reversing guide bar 15 and a bar retaining bracket 16 with three pairs of retaining grooves 17 are installed on a vertical frame sections 11 at front and back of a leg frame 10 on the left side at certain intervals from the lower side. A long seat cloth 20 with a retaining bar 21 fixed on one end while the other end is fixed on a upper horizontal frame section 14 of a leg frame 13 on the right side is lead inside from the outside of a leg frame 10 through the seat cloth reversing guide bar 15 from an upper horizontal frame section 12 on the left leg frame 10. The retaining bar 21 is then retained on the retaining grooves 17 of any of the bar retaining bracket 16 and a seat is formed between the upper horizontal frame sections 12, 14 on both sides at a height corresponding to the length of the seat cloth 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement of a cloth chair in which a seat portion is formed of cloth such as pan cloth.

  As is well known, in a conventional cloth chair, both ends of the seat cloth are fixed to each upper horizontal frame portion extending forward and backward between the upper portions of a pair of front and rear vertical frame portions constituting the left and right leg frames. (For example, see Patent Documents 1 and 2).

Therefore, although the conventional cloth seat chair has a simple structure, there is a problem that it is difficult to obtain a comfortable sitting position because the seat height is fixed.
Japanese Patent No. 3087852 Japanese Patent Publication No. 6-16730

  In view of the problem of the sitting position due to the fixing of the seat height as described above, which is recognized for a conventional cloth chair, the present invention allows the seat height to be arbitrarily set with a simple structure and operation as a cloth chair. The challenge is to provide something that can be adjusted.

  According to the present invention, the above-described problem is, firstly, as described in claim 1 of the present invention, in the lower part of the pair of front and rear vertical frames of the left and right leg frames, Attach each end of the extending seatcloth reversing guide bar, and a plurality of pairs of front and rear bar latching brackets with a vertical spacing between the seatcloth reversing guide bar of the vertical frame and the upper horizontal frame. Attach and attach a long cushion with a latching bar at one end between the upper horizontal frame part of the left and right other leg frame and the selected bar latching bracket pair. Fixing the leg frame to the upper horizontal frame part, guiding the turning through the upper horizontal frame part of one of the left and right leg frames and the cushion reverse guide bar, and hanging the bar latch bar to the selected bar latch bracket pair To a cloth chair that is tensioned or relaxed through a stop To resolve I.

  In the cloth seat chair according to the first aspect of the present invention, the length of the seat cloth extending between the upper horizontal frame portions of the left and right leg frames can be changed by changing the bar latch bracket pair for latching the latch bar. Change the height of the seat.

  Further, according to the present invention, secondly, as described in claim 2 of the claims, the problem is that the middle part of the pair of front and rear vertical frame parts of the left and right leg frames is The front and rear ends of the cushion winding shaft extending horizontally can be rotatably supported, and the rotation of the cushion winding shaft can be restrained by at least one front and rear ends of the cushion winding shaft and the vertical frame facing the one end. A pin-lock means is provided, and the long seat cloth is placed between the seat cloth winding shaft and the upper horizontal frame portion of the other leg frame on the left and right sides, and the upper horizontal frame portion of the left and right leg frames on each end. This is solved by a cloth chair that is stretched in a tensioned or relaxed state through fixing to the frame part and turning guidance through the upper horizontal frame part of one of the left and right leg frames.

  In the cloth chair according to claim 2, the rotation of the cushion winding shaft extends between the upper horizontal frame portions of the left and right leg frames in a state where the restraining of the rotation of the cushion winding shaft by the pin lock means is released. Adjust the seat height by changing the length of the cushion.

  According to the cloth seat chair according to the present invention as set forth in claim 1, the height of the seat is arbitrarily adjusted by simply changing the bar latch bracket pair for latching the latch bar fixed to the seat cloth. In addition to being easy to use and having a simple structure, it can be provided at a low cost.

  According to the cloth chair of the present invention as set forth in claim 2, the height of the seat can be adjusted only by the rotation restraint of the winding shaft of the pin lock means, the rotation restraining release operation and the rotation operation of the seat cloth winding shaft. It is easy to use and has a simple structure, so it can be provided at low cost.

  A preferred embodiment of a cloth chair according to the present invention will be described below with reference to the drawings.

  First, FIG. 1 schematically shows a first embodiment, which is an embodiment of the cloth chair according to claim 1, and is spaced from the lower side to the vertical frame portion 11 before and after the left leg frame 10. Then, a seat cloth reversing guide bar 15 and a plurality of pairs (three pairs in the drawing) of a square block bar retaining bracket 16 with eccentric retaining grooves 17 are attached by screw fastening, and the other end is attached to the right side. A long seat cloth 20 fixed to the upper horizontal frame portion 14 of the leg frame 13 and having a latch bar 21 fixed to one end thereof is passed through the seat horizontal reversing bar 15 from the upper horizontal frame portion 12 of the left leg frame 10. After guiding from the outside of the frame 10 to the inside, the latching bar 21 is inserted into the latching groove 17 of the arbitrary bar latching bracket 16 and latched, and the left and right upper horizontal frame parts 12, 14 to form a seat having a height corresponding to the length of the seat cloth 20. It is.

  In this embodiment, the height of the seat between the left and right upper horizontal frame portions 12 and 14 can be adjusted in a plurality of stages by changing the pair of front and rear bar latch brackets 16 that latch the latch bar 21.

  As shown in FIG. 1, the eccentric latching groove 17 of the bar latching bracket 16 has a shape that extends forward and backward in the lateral width direction of the vertical frame portion 11 when attached to the vertical frame portion 11 of the leg frame 10. However, the position of the latching groove 17 with respect to the vertical frame portion 11 is arbitrary. For example, as shown in FIG. The groove 19 may be formed so that the central portion in the width direction of the vertical frame portion 11 extends back and forth.

  Next, FIG. 3 shows a second embodiment which is an embodiment of the cloth chair according to claim 2, and an intermediate portion in the vertical direction of the vertical frame portion 11 before and after the left leg frame 10. Further, the front and rear ends of the cushion winding shaft 25 are supported, and a handle 26 with a screw-type lock pin 27 extending to the front end of the cushion winding shaft 25 so as to be able to move forward and backward is fixed to the front end portion of the cushion winding shaft 25. A lock pin hole 28 into which the lock pin 27 that constitutes the pin lock means can be inserted and removed together with the lock pin 27 is formed at the opposite portion of the vertical frame 11 to the lock pin 27, and the other end is the upper part of the right leg frame 13. The long seat cloth 20 fixed to the horizontal frame portion 14 is guided to the seat cloth winding shaft 25 through the upper horizontal frame portion 12 of the leg frame 10 and one end thereof is fixed to the seat cloth winding shaft 25 a plurality of times. It consists of a wound structure, between the left and right upper horizontal frame parts 12, 14, Forming a seat height corresponding to the length of the fabric 20.

  In this embodiment, the height of the seat between the upper horizontal frame portions 12 and 14 is set by the rotation of the cushion winding shaft 25 via the handle 26 in a state where the lock pin 27 is removed (removed) from the lock pin hole 28. By winding or unwinding the cloth 20, it can be adjusted in multiple steps.

  FIG. 4 shows a modification of the pin lock means, in which a lock pin hole 31 extending in the diametrical direction is provided at the end protruding from the vertical frame 11 at the rear end of the cushion winding shaft 25, while the vertical frame 11, a lock pin bracket 32 adjacent to the projecting end of the cushion winding shaft 25 is fixed, and a screw type lock pin 30 that can be inserted into and removed from the lock pin hole 31 of the cushion winding shaft 25 is attached to the lock pin bracket 32. The rotation of the seat cloth winding shaft 25 is stopped and released through insertion / removal of the lock pin 30 with respect to the lock pin hole 31.

  In addition to the above, the cloth seat chair according to the present invention can be implemented in various forms such as a lock pin hole of the pin lock means having a screw hole shape or a non-screw (no screw) type lock pin. However, it is not limited to the above form.

It is a perspective view of 1st embodiment of the cloth seat chair concerning this invention. It is a partial expansion perspective view which shows the modification of the bar latch bracket in 1st embodiment. It is a perspective view of 2nd embodiment of the cloth seat chair concerning this invention. It is a partial enlarged side view which shows the modification of the pin lock means in 2nd embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Leg frame 11 Vertical frame part 12 Upper horizontal frame part 13 Leg frame 14 Upper horizontal frame part 15 Seat cloth inversion guide bar 16 Bar latch bracket 17 Suspension groove 18 Bar latch bracket 19 Suspension groove 20 Seat cloth 21 Suspension Bar 25 Seat wrapping shaft 26 Handle 27 Lock pin 28 Lock pin hole 30 Lock pin 31 Lock pin hole 32 Lock pin bracket

Claims (2)

  At the bottom of a pair of front and rear vertical frames on one of the left and right leg frames, each end of a seat cloth reversing guide bar that extends horizontally back and forth is attached. A pair of front and back bar latch brackets are installed in pairs, spaced apart vertically, and a long seat cloth with a latch bar fixed to one end is attached to the upper horizontal frame of the other left and right leg frames. Between the left and right leg brackets and the upper horizontal frame of the other leg frame at the other end, and the upper horizontal frame part and the seat cushion inversion guide bar of the left and right leg frames A cloth chair that is stretched in a tensioned or relaxed state through turning guidance through a bar and a latch of a bar latch bar to a selected bar latch bracket pair.   The front and rear ends of the seatcloth winding shaft extending horizontally in the front and rear are rotatably supported at the middle portion of the pair of front and rear vertical frame portions of the left and right leg frames, and at least one end portion of the front and back of the seatcloth winding shaft A pin lock means that can prevent the rotation of the cushion winding shaft is provided on the vertical frame facing one end, and the long seat cloth is placed between the cushion winding shaft and the upper horizontal frame of the other leg frame on the left and right. In addition, in a tensioned or relaxed state, the seat cloth winding shaft at each end and the other left and right leg frames are fixed to the upper horizontal frame portion, and the turning is guided through the upper horizontal frame portions of the left and right leg frames. A stretcher chair.

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