KR200304619Y1 - Supporting bracket for the seat and back of chair - Google Patents

Abstract

The present invention relates to an improvement of a bracket for assembling a seat plate and a back plate of a chair, and in particular, the angle of the back plate is smoothly made without noise and at the same time, the back plate can be separated from the seat plate for easy storage and transportation. .

In order to achieve the above object, the present invention constitutes a bracket for assembling the seat plate and the back plate of the chair, and the support plate 220 is inserted into the support shaft bar 320 of the connection plate 300 to the bottom surface of the main body 200 so that the lifting plate 220 is guided. ) Fixed and installed, the guide plate 221 is configured on the gripping plate 220, the guide hole 221 is configured to be curved to support the support shaft 320 coupled to the connecting plate 300 without lifting guide To the rear end of the connecting plate 300, the back holder 400 is to be assembled to be detachable.

Description

Supporting bracket for the seat and back of chair}

The present invention relates to an improvement of the seat plate and the back support bracket of the chair, and in particular, the angle of rotation of the back plate constituting the chair can be smoothly made and the back plate can be separated from the seat to facilitate storage and transportation. I did it.

Chairs have been provided with chairs of various configurations depending on the purpose and function. In particular, chairs for office chairs are provided with chairs capable of adjusting the height of the seat and the angle of the back depending on the product.

The angle adjustment of the back plate is made by the rotation angle adjustment of the connection plate installed to be movable to the support shaft bar on the bottom of the body of the bracket and the rotation angle adjustment is made by the back angle adjustment knob installed on one side of the connection plate.

In other words, if you rotate the back angle adjustment knob to one side, the working shaft is pushed to one side, and the gap between the plurality of clamping plates inserted in the working shaft is relaxed, so it is possible to adjust the angle required by pushing or pulling the back in the above state. When the adjustment is completed, the back angle adjusting knob is put back so that the backing plate is fixed by the spring clamped by the spring.

At this time, the connecting plate is supported by a support shaft rod on the fixing piece of the bracket, and the guide plate is formed in the narrowing plate fitted to the working shaft bar, but the guide hole is drilled in parallel straight form.

Therefore, when the back angle is adjusted, the connecting plate is lifted and rotated around the support shaft, and the operating shaft is moved along the guide hole formed in the narrow plate.

However, the connecting plate is rotated about the support shaft bar, but the guide hole formed in the pincer plate is bored in a straight line, where the operating shaft bar installed in the connecting plate according to the rotation angle of the connecting plate is located in the guide pin of the pin plate. Since it is different, the washers located between the pins are eccentrically positioned based on the guide holes of the pins.

Therefore, the area in contact with the washer and the narrowing plate is reduced by that much, so that the support of the solid back plate cannot be made, and thus, the angle of the back plate is deformed when the back plate is fixed or pushed or pulled by an external force.

In the above, the washer sandwiched between the sandwich plates is made of metal, so that the noise is not only generated when the angle of the back plate is adjusted.

In addition, the chair is conventionally used as a means for fixing the back plate to the seat plate to be integrally welded to one side of the connecting plate installed to the angle adjustable bracket on the bracket, and the back plate is fastened and fixed as the back plate assembly is completed If it is difficult to separate the configuration is occupied a large volume during storage and transportation, handling is inconvenient, there was a disadvantage that the logistics cost increases.

In addition, as a means for fluidly connecting the connecting plate to the bracket to press the bracket so that the fixing piece is composed integrally, the connecting plate is positioned between the fixing piece and then connected to the support shaft rod to secure the rotation operation of the connecting plate There was a drawback that noise occurs due to friction between metals.

The present invention not only makes the operation for adjusting the angle of the back plate from the seat plate of the chair smoothly, but also makes it possible to fix it firmly after setting the angle. And to facilitate transportation and at the same time reduce the volume to reduce the logistics cost.

In order to achieve the above object, the present invention constitutes a bracket for supporting the seat plate and the back of the chair, and connects the connecting plate for angle adjustment of the back plate to the bottom of the bracket so as to adjust the angle, and guides the rotation of the connecting plate. The guide plate is formed by drilling the pincer plate, but the guide hole is configured to be curved to match the rotation radius of the connecting plate, and the back plate fixing for assembling the plate is to be fastened to be assembled and fixed at one end of the connecting plate.

1 is a perspective view of the present invention, the state view from the bottom

2: Bottom view of the present invention

3: Side configuration diagram of the use state of the present invention

4 is a main cross-sectional configuration of the present invention

5 is a cross-sectional view of the main part of the present invention, a state in which the connecting plate is rotated downward

6 is a cross-sectional view of a portion of the present invention sandwiched plate assembled

7 is a bottom perspective view of the subject innovation body

8 is an exploded perspective view of the main part of the present invention

<Description of the symbols for the main parts of the drawings>

(100)-bracket (200)-body

(210)-Protrusion (211)-Fixed

(212)-Support (213)-Through

(214)-Height Adjusting Knob (215)-Resin Holder

(220)-The Grip Plate (221)-The Protagonist

(222)-Fixed (224)-Anchor

(300)-connection plate (310)-locking groove

(311)-Priority (312)-Support

(313)-Bending Pieces (314)-Public

(315)-fixing piece (320)-operating shaft

(321)-Head (322)-Thread

(323)-Nut (324)-Compression Spring

(325)-Washer (326)-Support

(327)-support body (328)-screwman

(329)-Jam (330)-Tilt Angle Adjuster

(331)-Connection (332)-Shaft Pin

(333)-Ground 1 (334)-Ground 2

(400)-back mount (410)-connection

(411)-Joining Holes (412)-Tightening Bolts

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a bottom perspective view of the back and seat plate support bracket 100 to be provided in the present invention, Figure 2 is a bottom configuration of the support bracket 100 of the present invention largely the main body 200 and the connecting plate 300 ) And the climbing stand (400).

The main body 200 is fastened and fastened to the bottom surface of the seat plate 510 of the chair 500 as shown in FIG. 3, and the back plate fixing unit 400 is assembled with the back plate 520, and the back plate fixing unit 400 has a main body. It is configured prefabricated to the connection plate 300 is configured to be connected to the rotation angle adjustable to 200 and will be described in more detail their configuration.

The main body 200 constituting the bracket 100 is configured as follows.

That is, as shown in Figure 7 by pressing the iron plate of a certain thickness to configure the main body 200, to constitute a protruding portion 210 protruded downward in the center of the main body 200, the fixing piece 211 on both sides of the front projection 210 This integrally downward projection, the front surface of the fixing piece 211, the support piece 212 is protruded upward, the through portion 213 is formed between the support piece 212.

One side of the protrusion 210 is connected to the height adjustment knob 214 to configure the height of the seat plate 510 using the height adjustment knob 214 when the chair 100 is used, and on the front of the protrusion 210 The downwardly fixed fixing piece 211 is forcibly inserted into the resin holder 215 made of synthetic resin to be fixed.

In the through part 213 formed between the support pieces 212, a plurality of sandwich plates 220 formed with guide holes 221 are fitted to each other, and a fixing piece 222 configured at one side of the sandwich plate 220 is disposed between the through portions 213. In the above state, the shaft bar 224 is inserted into one side of the support piece 212 to allow the through hole 223 of the fixing piece 222 to penetrate and then fit into the other support piece 212 to be fixed.

The support shaft bar 216 is fixed to the resin holder 215 fitted to the fixing piece 211 of the main body 200.

In the above state, as shown in FIGS. 1 and 4, the connecting plate 300 is positioned on the bottom surface of the main body 200, and the engaging groove 310 configured at the distal end of the connecting plate 300 has a fixing piece 211 of the main body 200. The coupling plate 220 fixed to the support piece 212 of the main body 200 through the through part 311 formed in the center of the connecting plate 300 so as to be coupled and fixed on the support shaft rod 216 installed therebetween. do.

The support 312 is formed at one side of the through part 311, the bending piece 313 is formed at both sides of the connecting plate 300, and the hole 314 is drilled in the bending piece 313. However, the position of the through hole 314 is matched with the guide hole 221 drilled in the pinch plate 220, and the fixing piece 315 is welded to the position of the through hole 314 of the one side bending piece 313.

In the above state, as shown in Figure 6, the operating shaft rod 320 composed of the head portion 321 and the screw portion 322 into the through hole 314 of the bending piece 313, the operating shaft rod 320 is a plurality of pinched plates After passing through the guide hole 221 configured in (220) and then the threaded portion 322 configured at the end of the operating shaft rod 320 to pass through the through hole 314 of the other bending piece 313, to the threaded portion 322 By fastening and fastening the nut 323, the head 321 is positioned in the through hole 314 of the one side bending piece 313.

At this time, the compression spring 324 is sandwiched between the support piece 312 formed on one side of the through part 311 and the head 321 of the operation shaft rod 320, and between the pinching plates 220, which are made of resin. Install the washer 325 by inserting the support piece 326 and the support pipe 327 between the nut 323 and the sandwich plate 220 to the threaded portion 322 of the operating shaft rod 320, the support piece 326 is one side of the sandwich plate 220, the support tube 327 is in contact with the nut 323 side.

In the above state, the connection part 331 of the back angle adjusting knob 330 is positioned on the fixed piece 315 welded to one side of the connecting plate 300, and then the shaft pin 332 is inserted into the fixed pin (332). 315) and the back angle adjustment knob 330 of the connecting portion 331 and the fixing piece 315 in order to be installed through the axial pin 332 as the axis of the back angle adjustment knob 330 is configured to rotate freely.

The end of the connecting portion 331 is in contact with the side of the head portion 321 of the operation shaft rod 320, the end of the connecting portion 331 to form a first ground plane 333 and the second ground plane 334, The first ground plane 333 and the second ground plane 334 are configured to have a different distance from the shaft pin 332.

In other words, the first ground plane 333 and the second ground plane 334 is the side of the head 321, so that the first ground plane 333 is closer to the second ground plane 334 around the shaft pin 332 The angle of the back plate 520 is adjusted or fixed depending on the selection it makes contact with.

The guide hole 221 of the gripping plate 220 fixedly installed on the support piece 212 of the main body 200 has a rotation radius of the support shaft bar 320 of the connecting plate 300 rotating the support shaft bar 216 in an axis. Consistent curvature ensures smooth operation.

In the center of the rear end portion of the connecting plate 300 rotatably connected to the support shaft rod 216 as shown in FIG. 8, a screw hole 328 is formed, and the engaging pieces 329 are inwardly directed to both bent pieces 313. It is composed of protrusions.

The rear end of the connecting plate 300 by inserting the connecting portion 410 of the back plate fixing 400 so that the connecting portion 410 is supported by the engaging piece 329 of the two bending pieces 313 and then coupled to the opening 410 The fastening bolt 412 is inserted into the ball 411 to be screwed to the screw hole 328, so that the back plate 400 is configured to be assembled or detachable to the connecting plate 300.

Reference numeral 530 is an assembly hole, and 531 is a fastening hole.

The present invention configured as described above, the seat plate 510 is installed on the upper surface of the main body 200 constituting the bracket 100 as shown in FIG. 3, and the back plate 520 is fixedly installed on the back plate 520 and the main body 200. In the assembly hole 530 configured in the center of the protrusion 210, the support shaft 531 constituting the chair 500 is inserted and used as in the prior art.

However, the chair 500 of the present invention not only makes the angle adjustment of the back plate 520 smoothly without noise, but also separates the back plate 520 from the seat plate 510 during storage and transportation of the assembled chair 500. By minimizing the number of items can be stored or transported in the same space to minimize the logistics cost.

First, the angle adjustment of the back plate 520 is as follows.

When the back plate 520 is rotated to the rear in the state in which the back plate 520 is upright, as shown in FIGS. 3 and 4, it is operated as follows.

That is, when the back plate angle adjusting knob 330 configured to be connected to the fixing piece 315 of the connecting plate 300 is pulled upward, the end of the connecting portion 321 is rotated downward with the shaft pin 332 as the second axis. Since the ground plane 334 pushes the head 321 side of the working shaft 320 forward, the working shaft 320 is pushed to one side to compress the compression spring 324.

As described above, as the operating shaft bar 320 is pushed to one side, the distance between the support piece 312 and the nut 323 screwed to the end of the operating shaft bar 320 is widened, and the support piece 312 and the nut ( When the interval between the 323 is widened, the gap between the pinching plate 220 and the washer 325 is relaxed while the gap between the pinching plate 220 and the resin washer 325 compressed by the compression spring 324 is relaxed. Is reduced.

When the angle of the back plate 520 is to be adjusted in the above state, the back plate 520 may be pushed back to be removed.

When the back plate 520 is pushed backward, the connecting plate 300 rotates downwardly as shown in FIG. 5 with the support shaft rod 216 fitted to the resin holder 215 of the fixing piece 211.

When the connecting plate 300 rotates downward, the operating shaft rod 320 fitted to the bending piece 313 of the connecting plate 300 is smoothly rotated and guided along the guide slot 221 of the pinching plate 220. One of the technical points.

When explaining the above process in more detail, the guide hole 22 drilled in the pinch plate 220 is drilled in the same surface as the radius of rotation of the operating shaft rod 320 is inserted into the bending piece 313 of the connecting plate 300 in any position Either way, the operating shaft 320 is always located in the center of the guide hole 221, so that it does not come into contact with the pinching plate 220 is a smooth rotation operation is made.

In addition, the washer 325 sandwiched between the plurality of sandwich plates 220 is made of a resin so that noise is not generated during the rotation operation of the connecting plate 300, so that a quiet angle adjustment is made.

In the above, the connecting plate 300 lifts and rotates the support shaft bar 216 fitted to the fixing piece 211 of the main body 200 to the shaft, but the support shaft rod 216 is inserted into the fixing piece 211 by a resin holder ( 215 is inserted into the back plate 520, even if the connecting plate 300 is rotated to adjust the angle operates smoothly without noise.

When the angle adjustment of the back plate 510 is completed as described above, when the back angle adjustment knob 330 pulled upward is lowered, the first ground surface 333 configured at the connection part 331 of the back angle adjustment knob 330 is operated. The head 321 of the shaft 320 is in contact with.

In this case, since the distance between the first ground plane 333 and the shaft pin 332 is shorter than the distance between the second ground plane 334 and the shaft pin 332, the support shaft 320 is driven by the holding force of the compression spring 324. The head 321 is moved by the distance between the first ground plane 333 and the second ground plane 334.

As described above, when the operating shaft rod 320 is moved toward the head portion 321 by the holding force of the compression spring 324, the support piece 312 and the end of the operating shaft rod 320 of the connecting plate 300 As the distance from the assembled nut 323 is narrowed, the sandwich plate 220 is compressed by the support piece 312 of the connecting plate 300 and the support piece 326 fitted to the operation shaft bar 320, and at the same time, the sandwich plate 220 is pressed. The washer 325 located between the 22 is also compressed together to increase the grip.

When the pinching plate 220 and the washer 325 are touched with each other, the friction force is increased, so that the operating shaft rod 320 is fixed from the pinching plate 220, and thus the flow of the connecting plate 300 is prevented so that the back plate 520 is prevented. It is firmly fixed.

At this time, the operating shaft rod 320 inserted into the connecting plate 300 is always located in the center of the guide slot 221 of the pinching plate 220, and the washer 325 fitted to the operating shaft rod 320 is also based on the guide slot 221. It is located in the center and maintains an even ground plane across the front to promote friction, thus providing a solid support.

Separation and assembly of the back plate 520 is made as follows.

That is, to store the chair 500 or to separate the back plate 520 from the chair seat 510 in order to minimize the volume during transportation from the connecting plate 300 assembled to the main body 200 constituting the bracket 100 The backing mount 400 can be easily removed.

That is, as shown in FIGS. 4 and 5, by unfastening the fastening bolts 412 that fasten the connecting plate 300 and the back plate fixing unit 400 from the screw holes 328, the back plate 520 is pulled backwards. Since the back plate fixing unit 400, which has been fixed 520, is completely separated from the connecting plate 300, the seat plate 510 and the back plate 520 are separated, thereby minimizing the volume of the chair 500, and thus, the chair ( When storing or transporting 500), it is possible to store and transport more products in the same space, thereby reducing logistics costs.

If you want to assemble for use after separation, the back plate 520 connecting the back plate 520 is sandwiched between the engaging pieces (329) formed in the rear end of the connecting plate 300 and then drilled on the back plate 400 When the fastening bolt 412 is inserted into the coupling hole 411 to be screwed into the screw hole 328 formed in the connecting plate 300, the assembling of the back plate 520 is simply completed on one side of the seat plate 510.

In addition, the main body 200 constituting the bracket 100 of the present invention has a protrusion 210 which is assembled with the support shaft 531 of the chair 500 at the center of the bracket 100 so as to protrude integrally. Not only is it beautiful in appearance, it is also expected to be solidly assembled.

In particular, it is possible to prevent waste of time and manpower in the production, as compared to the configuration of a separate protrusion by the conventional welding method.

As described above, in the present invention, when constructing a chair configured to adjust the angle of the back plate, the guide shaft of the pincer plate for the angle adjustment guide of the back plate is rotated up and down along the guide hole in the same manner as the rotation radius of the operating shaft rod. This makes it possible to expect the high quality of the product because it not only operates smoothly without noise and makes solid support when adjusting the angle, and also the back plate is easily separated from the seat plate so that more product can be stored in the same space during storage and transportation. It can be transported, so that the logistics cost can be reduced.

Claims (2)

In constituting the bracket for assembling the seat plate and the back of the chair, the operation shaft bar 320 of the connecting plate 300 is fitted to the guide hole 221 on the bottom of the main body 200 constituting the bracket 100 to guide the lifting and lowering The pinching plate 220 is fixedly installed, but the guide slot 221 of the pinching plate 220 is configured to be curved in the same manner as the rotation radius of the support shaft bar 320, and the back plate fixing unit 400 is formed at the rear end of the connecting plate 300. The seat plate and back support bracket of the chair, characterized in that the assembly is detachable through the fastening bolt (412). The method of claim 1, wherein the engaging piece 329 protrudes from the inner side of the bent piece 313 formed at the rear end of the connecting plate 300, and the connecting part 410 of the back plate fixing 400 to the engaging piece 329. The seat plate and back support bracket of the chair, characterized in that the assembly plate 300 is assembled with the fastening bolt 412 through the coupling hole 411 formed in the connecting portion 410.