KR101874855B1

KR101874855B1 - Easy To Assemble Chair

Info

Publication number: KR101874855B1
Application number: KR1020170011806A
Authority: KR
Inventors: 김석준; 박도형
Original assignee: 주식회사 한성교구
Priority date: 2017-01-25
Filing date: 2017-01-25
Publication date: 2018-07-05

Abstract

The present invention relates to a chair having a seat, legs coupled to a bottom of the seat, and a frame fastener for coupling the seat and the legs. A front groove (11) and a rear groove (12) are formed on a seat bottom surface (10-1), a guide groove (14) is formed laterally at a rear of the front groove (11), and the legs are provided with a front frame (21) and a rear frame (22) which are positioned in the front groove (11) and the rear groove (12), respectively. The frame fastener (30) includes: a hook (32) having an inner surface forming a frame receiving portion (31) for enclosing the front frame (21) and an outer surface slidably moving in contact with the front groove (11); and a guide protrusion (33) inserted into the guide groove (14) to slidably move.

Description

{Easy To Assemble Chair}

The present invention relates to a chair capable of easily assembling a leg and a seat. More particularly, to a chair which can be easily assembled to firmly fix a leg to a seat of a chair without using a mechanical element such as a bolt or a screw.

Generally, a chair assembles legs and sheets separately made into a single finished product. Such assemblies may be made at the factory, but may be made directly by the consumer. Therefore, it is necessary to assemble the legs and the seat of the chair easily with a small number of workings without a separate tool.

In general, when assembling a leg and a seat of a chair, an assembly method of fixing the leg by screwing to the underside of the chair seat is used in many cases, and as in Patent Registration No. 10-0725428 (entitled " The prior art is well known.

However, in this conventional technique, since a plurality of screws must be fastened in order to fix the legs to the bottom of the seat, there is a problem that the assembling time is excessively long. In addition, it is not easy to adjust the frame fixing position or the screw tightening position of the leg precisely. There is a problem that assembly failure occurs a lot and it is difficult for unskilled people to work.

Other conventional techniques for assembling the legs and the seat of a chair include forming engagement pieces that fit into the seat and the leg, respectively. For example, Japanese Utility Model Laid-Open No. 20-2009-0007622 And the joining structure of the stool).

The method of assembling using the coupling piece is advantageous in that even a non-expert can easily work, and there is no error in the joint position of the leg and the seat. However, it is not easy to increase the attachment strength of the coupling piece attached to the frame or the seat of the leg There is a problem that defects such as breakage of the binding pieces themselves frequently occur during use.

Korean Patent Registration No. 10-0725428 (Registered on May 30, 2007.) Korean Registered Patent No. 10-1326079 (Registered on Jul. 28, 2009)

The present invention provides a means for easily setting a frame of a chair leg to a specified fixed position on the bottom of a seat in order to assemble a chair leg and a seat, So as to solve the problems of the prior art.

A chair which is easy to assemble according to the present invention is a chair having a seat, a leg coupled to the seat bottom, and a frame fixing means for connecting the seat and the leg, wherein the seat has a front groove and a rear groove on the front and rear sides, A frame having a front frame and a rear frame for positioning the chair legs respectively in the front groove and the rear groove, And a slider which is inserted into the guide groove and slidably moves is formed on the inner surface of the frame receiving portion, which surrounds the front frame, and the outer surface of the slider which contacts the front groove.

The front fastening groove is formed in the front groove of the seat bottom surface, and the frame fastening hole is formed with a recessed portion which is recessed at a portion where the frame fastening groove is brought into contact with the front fastening flange. It is preferable that the groove is provided with a raised rear stopping protrusion at a position where the rear frame is located.

In addition, a latching bar may protrude from the rear groove of the seat bottom surface, and a latching hole may be formed in the rear frame to receive the latching bar.

Since the legs and the seat can be assembled by manually inserting the frame fastener without using any screws or bolts, the chair which is easy to assemble according to the present invention can be easily handled and the working time can be greatly shortened . In addition, it is possible to prevent the occurrence of phenomena such as thread loosening during use, and it is also possible to easily separate the seat and the leg when necessary.

Further, since grooves are formed on the bottom surface of the seat in which the frame of the leg is seated, the present invention has an effect that an assembly position of the leg and the seat can be easily held by the non-expert.

1 is an exploded perspective view of the present invention.
2 is an assembled state bottom view of the present invention.
3 is a cross-sectional view taken along the line A-A 'in Fig.
4 is an external perspective view of the frame fastener of the present invention.
5 is a perspective view of the inner structure of the frame fastener of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated or reduced for convenience in order to more clearly understand the structure of the present invention.

The terms used for describing the present invention are terms defined in consideration of the functions of the present invention. However, since these terms can be expressed in other terms depending on the intention or custom of the designer or the user, the definition of these terms used in the present invention should be made in consideration of the contents described throughout the specification.

It should be noted that the terms "top", "bottom", "front", "back", "left", "right", "front", "forward", "rear" The term is based on the orientation of the disclosed figure (s). However, since the components of the embodiments of the present invention can be positioned in various orientations, directional terms are used for illustrative purposes and not limitation.

In the case where the constituent elements used in the present invention are referred to as being 'connected', 'coupled' or 'contracted', the 'connected', 'coupled' or 'contracted' As used herein.

In the following description, well-known functions or constructions are not described in detail since they would unnecessarily obscure the gist of the invention.

Fig. 1 is an exploded perspective view of a seat 10 of a chair according to an embodiment of the present invention, a frame 20 extended from a leg 25, and a frame fixing hole 30 in an exploded perspective view. The leg 25 of the present embodiment shown in the figure includes the upper frame 20 and is divided into C-shaped legs when viewed from the side.

1, the frame 20 on the leg 25 of the present embodiment has a front frame 21 formed to be long in the left and right direction, a pair of rear frames 22 in the form of a short length, . And the rear frame 22 is disposed substantially parallel to the front frame 21. [

The pair of rear frames (22) and the front frame (21) are connected by a pair of side frames (24). 1, the side frame 24 extends from both ends of the front frame 21 and extends to the middle portion of the rear frame 22. The frames of this embodiment can be constructed of metal hollow pipes.

As shown in Figs. 1 and 3, the front frame 21 is circular in cross-section, while the rear frame 22 is rectangular in an elliptical shape. The shape of the cross section of the rear frame 22 may be circular, but a rectangular shape is advantageous in order to obtain an action effect of preventing deviation in the back groove 12 of the seat bottom surface 10-1, which will be described later.

In the rear frame 22, a locking hole 23 is formed. The engaging hole 23 is formed at a position corresponding to the engaging rod 18 provided in the back groove 12 described later.

The sheet 10 of this embodiment is preferably made of synthetic resin based material, and in this case, it is easy to form the shape of the bottom surface of the sheet integrally by using the injection molding method.

As shown in Fig. 1, a front groove 11 and a rear groove 12 are formed on the seat bottom surface 10-1 on the front side and on the rear side, respectively.

The front groove 11 is formed long in the left and right direction so as to sufficiently accommodate the front frame 21 described above. The cross-sectional shape of the front groove 11 preferably has a shape corresponding to the cross-sectional shape of the front frame 21 as shown in FIG.

As shown in FIGS. 1 and 2, a pair of front latching jaws 16 are formed at predetermined lengths on the front side of the front groove 11. And a space 15 between the pair of front latching jaws 16 spaced apart.

The front latching jaw 16 is formed at a position corresponding to the fixing position of the frame fixing hole 30 to be described later. 2 and 3, the front latching jaw 16 is fitted to the recessed latching portion 36 of the frame fixing hole 30, which will be described later, as shown in Fig. 2 and Fig. 3 And serves to fix the frame fastener 30.

The seat bottom surface 10-1 at a position facing the front side engagement protuberance 16 at the opposite side of the opening of the front groove 11 has an inclined surface shape that increases in height toward the rear side. The inclined surface may be formed by deforming into a vertical surface or a horizontal surface as necessary.

The guide groove 14 is formed in the inclined surface and serves to guide the guide protrusion 33 of the frame fixing hole 30 described later to be inserted and slid.

The guide groove 14 is formed to be long in the left and right direction. Preferably, both ends of the guide groove 14 in the longitudinal direction are prevented from falling to the outside of both ends of the front latching jaw 16.

A pair of rear grooves 12 are formed on the rear side of the seat bottom surface 10-1 of the present invention. The rear grooves 12 are symmetrically arranged in the right and left directions, and the longitudinal direction thereof is substantially parallel to the longitudinal direction of the front grooves 11.

A retaining bar (18) protrudes from the rear groove (12). The latching rod 18 is preferably formed of a small metal rod, and it can be installed in such a manner that one end is embedded when the sheet is injected or a screw is formed at one end of the rod and inserted into the sheet.

The rear grooves 12 are formed at the front side protrusions 17 respectively. The rear hooking jaw 17 protrudes in the direction of the opening surface of the rear groove 12 and serves to prevent the rear frame 22 from being caught by the lower portion after assembly as shown in FIGS. 2 and 3 .

The pair of back grooves 12 are connected to each other by the side grooves 13 near the left and right end portions of the front grooves 11, respectively. Therefore, when the leg is assembled, the rear frame 22 and the side frame 23 described above are positioned in the rear groove 12 and the side groove 13.

It is preferable that the rear groove 12 and the rear frame 22 and the side groove 13 and the side frame 23 are formed in the same shape so that they are brought into close contact with each other. This is to prevent the frames from shaking in the grooves after assembly and to obtain the effect that the load is evenly dispersed.

Fig. 4 and Fig. 5 show the structure of the frame fastener 30 seen from the front and the rear.

According to the present embodiment, the frame fastening openings 30 are provided as a pair and are divided into right and left portions so as to be respectively engaged with the pair of front fastening legs 16 as shown in FIG.

The frame fastener (30) has a generally rectangular body surface (39). The body surface (39) has a hook portion (32) curved at one end toward the inside in a curved shape, and an inclined portion (35) is formed at the other end side toward the inside.

3, the hook portion 32 is formed in the shape of a hook having a frame receiving portion 31 for enclosing the front frame 21 inwardly. The outer surface of the hook portion 32 is formed in the front groove 11).

A guide protrusion (33) inserted into the guide groove (14) and slidable is protruded in the shape of a rectangular parallelepiped at the upper end of the inclined portion (35).

On the other hand, in the chair of the present invention, there may occur a phenomenon that the frame fastener 30 inserted into the front frame 21 slightly moves in the longitudinal direction of the front frame 21 due to vibration or other factors during use. In order to prevent such a phenomenon, it is preferable to dispose the elastic piece 37 so as to protrude inwardly of the hooking portion 32.

5, the resilient piece 37 is formed in the form of a plate extending from an end inside the hook 32, and a contact protrusion 38 protruding toward the front frame 21 is provided at the end thereof.

In addition, the frame fixing hole 30 may be provided with a through hole penetrating the body surface 39 and the guide projection 33. That is, the body surface 39 may be provided with a through-hole inlet 34, and the guide protrusion 33 may be provided with a through-hole outlet 34-1 so as to face the bottom surface of the guide groove 14.

The process of assembling the chair of the present invention is very simple and follows.

The frame 20 extending from the upper portion of the leg 25 shown in Fig. 1 is inserted into the grooves formed in the seat bottom surface 10-1.

At this time, the positions and shapes of the front groove 11, the side groove 13 and the back groove 12 correspond to the shape of engagement and the shape of the outer periphery of the front frame 21, the side frame 24 and the rear frame 22 Because of the design, the seat and legs are set in position without any adjustments.

In this state, a part of the rear frame 12 is positioned inside the rear hooking jaw 17 as shown in Fig.

When the seat bottom face 10-1 and the frame 20 are set, the guide protrusion 33 of the right frame fixing hole 30-2 shown in FIG. 1 is inserted into the guide groove 14 of the seat, 32 are pushed into the clearance space 15 so that the front frame 21 is accommodated in the frame receiving portion 31 so as to be received therein.

In this state, the right frame fastener 30-2 is pushed to the right along the arrow direction shown in Fig. 2 to move to the front fastening protrusion 16 portion. At this time, as shown in FIG. 3, the latching part 36 and the front latching jaw 16 are firmly fixed to each other and tightly fixed. When it is necessary to disassemble it later, the right frame fastener 30-2 is pushed to the left to move it to the clearance space 15, and then it is withdrawn in the reverse order of the above.

The left frame fixture 30-1 can be engaged and disengaged in the same manner.

As described above, once the frame fastener 30 is installed, the rear frame 22 does not come out of the rear groove 12 without the attachment of a separate fastener.

That is, as shown in Fig. 3, the front frame 21 does not come out of the front groove 11 by the frame fastener 30. Therefore, the rear frame 22 rotates in the direction indicated by the dotted circle with the front frame 21 as the central axis, and a force is exited from the rear groove 12. However, 22). In particular, since the rear frame 22 has a rectangular cross-sectional shape, it is difficult to escape from the engagement of the rear catching jaws 17, as compared with a circular shape.

In addition, when the rear groove 12 further includes a locking bar 18 passing through the rear frame 22, the locking bar 18 prevents the rear frame 22 from rotating, The rear frame 22 can be fixed.

The action of the elastic piece 37 of the frame fastener 30 is as follows.

2, the elastic piece 37 is slid on the outer peripheral surface of the front frame 21 when the frame fastener 30 is moved in the direction of the arrow. However, after the frame fastener 30 is fixed at the front latching jaw 16, the contact protrusion 38, which receives the elastic force of the elastic piece 37, is in a state of pushing the front frame 21, It is possible to prevent a phenomenon that the frame fixing hole 30 is dislocated in place.

On the other hand, if a screw or the like is passed through the through hole inlet 34 of the frame fixing hole 30 and the through hole outlet 34-1 so as to be stuck on the bottom surface of the guide groove 14, Can be permanently prevented.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention should be understood only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention if they are apparent to those skilled in the art.

10: Sheet 10-1: Seat bottom
11: front groove 12: rear groove
13: side groove 14: guide groove
15: Free space 16: Front jaw
17: rear jaw jaw 18:
20: frame
21: front frame 22: rear frame
23: Retaining hole 24: Side frame
25: Bridge
30: Frame fastener
31: frame receiving portion 32: hook portion
33: guide projection 34: through-hole entrance
35: inclined portion 36:
37: Elastic piece 38: Contact projection
39: body surface

Claims

A chair, a seat, and a leg coupled to the seat bottom and a frame fastener for joining the seat and the leg,
The seat 10 is provided with a front groove 11 and a rear groove 12 on the front and rear sides of the seat bottom surface 10-1 and a guide groove 14 is formed on the rear side of the front groove 11 Respectively,
The legs are formed with a frame 20 having a front frame 21 and a rear frame 22 for positioning the front and rear grooves 11 and 12, respectively,
The frame fastener 30 includes a hook 32 having an inner surface forming a frame receiving portion 31 surrounding the front frame 21 and an outer surface contacting and sliding with the front groove 11, And a guide projection (33) inserted into the guide groove (14) and slidable is formed in the guide groove (14).

The method according to claim 1,
The front side groove 11 of the seat bottom surface 10-1 is formed with a front side engagement protuberance 16 protruded at a position where the frame fixing hole 30 is provided,
The frame fixing hole 30 is formed with an engaging portion 36 which is recessed at a portion to be brought into contact with the front engaging protrusion 16,
And a rear fastening protrusion (17) protruding from a rear frame (22) is formed in a rear groove (12) of the seat bottom surface (10-1).

The method according to claim 1,
A latching bar 18 is protruded from the rear groove 12 of the seat bottom face 10-1 and a latching hole 23 is formed in the rear frame 22 to receive the latching bar 18 Wherein said chair comprises: