KR20170020412A - Folding type chair - Google Patents

Abstract

The present invention relates to a foldable chair, and more specifically, to a foldable chair allowing each leg to be fixed in its place when the chair is unfolded for use, thereby maintaining a stable state, and unfolded to allow less occupied volume thereof when the chair is stored, thereby allowing convenience of use. According to the present invention, a pair of hubs positioned on both sides of the foldable chair are arranged in a front-rear direction. A center support frame is coupled and installed between the hubs. The front hub has free ends coupled to and installed on both left and right sides thereof to be in contact with the floor when a front leg frame is unfolded, and the rear hub has free ends coupled to and installed on both left and right sides thereof to be in contact with the floor when a rear leg frame is unfolded. The rear hub is positioned higher than the front hub to allow the center support frame to be positioned slantwise. Front pole frames are installed on both left and right sides of the front hub, respectively, and rear poll frames are installed on both left and right sides of the rear hub, respectively. A seat fabric is coupled to free ends of the front and rear pole frames to allow a user to sit on the seat fabric.

Description

Folding type chair

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a foldable chair, and more particularly, to a foldable chair that can be stably held in place when the folded chair is opened and used.

In general, folding furniture including folding chairs, folding tables, etc. are generally developed and used in various forms. Among them, the supporting members on both sides are fixed to each other by a horizontal frame, A lower frame which is to be a bridge for a lower position of the frames and an upper frame which is installed for fixing the seat to an upper position are installed to be coupled to each other, A portable chair of the Korean Registered Patent Publication No. 10-1176740 and a "folding furniture" of the U.S. Patent No. 5,709,428 are known to be configured to be foldable by combining seats for sitting in a frame.

These prior arts have a structure in which a plurality of upper and lower frames, which are commonly coupled to the support members on both sides so as to be detachably coupled to each other, are formed in the form of a cylindrical pipe and are simply coupled to the support member together with the elastic string The user is in contact with the lower frame and the floor surface when the user is seated on the seat and a load or an external force is applied to these frames or when these frames and the supporting members are not engaged with each other in a proper position Since the position is unstable, the posture of the user who seated is also unstable, which is not only inconvenient to use but also causes the chair to fall and cause safety accidents.

Particularly, the "portable chair" of the Korean Registered Patent Publication No. 10-1176740 has a structure in which the hub is located on both the left and right sides and the center support frame is horizontally coupled between the hubs, The frame is located in the forward and backward direction. The leg frame is of the same length and is short, so there is a sense of stability when standing upright. However, when the front pole frame of the seat cloth is placed on the leg, If the backrest frame and the rear pawl frame are concentrated, the load is concentrated. Accordingly, when the load is concentrated on the rear leg frame and the rear pawl frame and the sufficient strength is not ensured, And the hub is damaged. .

In addition, since the structure in which the hub, the center support frame, the leg frame, and the pawl frame are combined with each other and the form in which the seat cloth is engaged is difficult to change structurally, there are many restrictions to solve the above- There is no separate part to be performed, and the user is inconvenienced in use.

1. Registered Patent Registration No. 10-1176740 (Published on Aug. 23, 2012) 2. U.S. Patent Publication No. 5,709,428 (Patent Date: 1990. 01. 20.) 3. Domestic Registered Design Bulletin No. 30-0808131 (Date of Notification: 2015.07.30.) 4. U.S. Patent Application Laid-Open Publication No. 2006/0061146 (published on Mar. 23, 2006). 5. U.S. Patent Application Laid-Open Publication No. US2012 / 0104807 (published on May 3, 2012).

The present invention has been accomplished in order to solve such a conventional problem, and has the following purpose.

The present invention is directed to a hub structure for a vehicle wherein a pair of hubs positioned on both sides are arranged in the forward and backward directions, a central support frame is coupled between the hubs, a front hub frame is coupled to both the left and right sides, The center frame is inclined so that the position of the rear hub is positioned higher than the position of the front hub, and when the pole frame and the seat cloth are engaged with the hub, the load The distribution is balanced in all directions, front, rear, left, and right so that the user can use it more safely, the parts can be prevented from being damaged by biased load, The length of the leg frame and the length of the pole frame are made equal to each other, As is the wish to reduce.

It is another object of the present invention to provide an armrest which can be used comfortably as well as being easy to use, and can be conveniently used by taking up little space in a folded state after use.

In order to achieve this object, a pair of hubs positioned on both sides are arranged in the front-rear direction, a central support frame is disposed between the hubs, and a free end The rear hub is connected to both sides so as to abut on the floor, and when the rear leg frame is extended to the rear hub, the free ends are connected to the bottom so as to be in contact with the floor, and the position of the rear hub is positioned higher than the position of the front hub, And a front pole frame is installed on both sides of the front hub, and a rear pole frame is provided on both sides of the rear hub on both sides of the rear hub. A sheet cloth is joined to the free ends of the front and rear pole frames, A folding chair is provided in which the user can sit.

Wherein the front and rear leg frames are joined to each other so that the opening grooves of the front and rear hubs can be folded or unfolded around the hinge portions and the communication holes and the communication grooves are formed in a straight line in a direction crossing the opening grooves, The front and rear pillar frames are engaged with the opening and back grooves so that the front and rear pillar frames are not folded by the front and rear pillar frames and moved in place The foldable chair is configured to be firmly fixed.

The front and rear hubs are each formed with leg frame opening grooves, and elastic rods (3) installed in a state of being connected to each other so as to be elastically pulled between the front and rear hubs and the front and rear leg frames An opening groove of the front and rear hubs and a joining portion of the frame are formed with an open groove inclined face portion and a frame inclined face portion corresponding thereto, respectively.

In addition, an inclined guide groove is formed between the first guide groove and the second guide groove in the opening groove of the front and rear hubs, thereby providing a foldable chair in which the opening groove and the frame are easily and smoothly operated when separated. do.

Further, a separate rear center pole frame is provided on the rear hub so as to be located at a position between the rear pole frames provided on the rear hub, and a seat cloth is joined to the free ends of the front and rear pole frames and the rear center pole frame, A folding chair is provided in which the user can sit.

According to the present invention, a pair of hubs positioned on both sides are arranged in the front-rear direction, a central support frame is disposed between the hubs, the front hub frame is coupled to both the left and right sides, The rear support frame is disposed at a position higher than the position of the front hub so that the center support frame is inclined. When the pole frame and the seat cloth are engaged with the hub, The load distribution is balanced in all directions of the front, rear, left, and right so that the user can use it more safely, the parts can be prevented from being damaged by biased loads, and the hub and the center support frame Due to specific features, the lengths of the leg frame and the pole frame are made equal to each other, thereby improving productivity and workability It is possible to reduce the manufacturing cost by improving the configuration and to perform the role of the armrest so as to have ease of use as well as comfort and to be able to utilize less space in a folded state after use And has an excellent effect.

1 is an exploded perspective view showing a preferred example of the present invention,
Fig. 2 is a perspective view of the coupled state of Fig. 1,
Fig. 3 is a side view showing only the frame excluding the sheet cloth in Fig. 2,
Fig. 4 is an enlarged view of a main part of the present invention,
Fig. 5 is a longitudinal sectional view of the main part of Fig. 4,
6 is a perspective view showing a state in which the frame is folded about the frame in a state in which the sheet cloth is separated,
7 is an exploded perspective view showing another example of the present invention,
8 is a perspective view of the coupled state of Fig. 7,
Fig. 9 is a side view showing only the frame excluding the sheet cloth in Fig. 8,
10 is an exploded perspective view showing another example of the present invention,
11 is a perspective view of the coupled state of Fig. 11,
Fig. 12 is a side view showing only the skeleton excluding the sheet cloth in Fig. 11,
FIG. 13 is a longitudinal sectional view showing a part of the hub of the example shown in FIGS. 10 to 12,
Fig. 14 is an operational state diagram of Fig. 13,
15 is a perspective view showing a state in which the frame is folded around the frame in a state in which the sheet cloth is separated,
16 is a perspective view of a coupled state as another example of the present invention.

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

According to a preferred embodiment of the present invention, a pair of front and rear hubs (1, 2), which are commonly located on both sides, are arranged in the front-rear direction and a center support frame And when the front leg frame 4 is extended to the front hub 1, the free legs are engaged with both the left and right sides so as to abut the floor. When the rear leg frame 5 is extended to the rear hub 2 And the center support frame 3 is positioned so as to be inclined so that the front hub 1 and the rear hub 2 are positioned higher than the position of the front hub 1, And a rear pole frame 7 is provided on both the left and right sides of the rear hub 2 and the front pole frame 6 and the rear pole frame 7 are fixed to the free ends of the front and rear pole frames 6 and 7, The seat cloth 8 is provided so as to be coupled to the seat cloth 8, Offers made folding chairs.

At this time, the front and rear hubs 1 and 2 are formed by injection molding or casting, and the center support frame 3, the leg frames 4 and 5, and the pole frames 6 and 7 are made of excellent strength The front and rear hubs 1 and 2 and the central support frame 3 are fixedly coupled to each other.

4 and 5, the opening grooves 12 and 22 of the front and rear hubs 1 and 2 may be folded or unfolded around the hinge portions 10 and 20, And the rear leg frames 4 and 5 are connected to each other and the communication holes 14 and 24 and the communication grooves 16 and 26 are formed in a straight line in the direction crossing the opening grooves 12 and 22 Rear and front poles 4 and 5 are provided in the communication holes 14 and 24 and the communication grooves 16 and 26 in a state in which the front and rear leg frames 4 and 5 are spread around the hinge portions 10 and 20, The front and rear leg frames 4 and 5 are folded by the front and rear pawl frames 6 and 7 by engaging the frames 6 and 7 across the opening grooves 12 and 22, So that it can be firmly fixed without moving in place. That is, even if the front and rear leg frames 4 and 5 in the unfolded state are intended to be folded in place through the opening grooves 12 and 22 around the hinge portions 10 and 20, The front and rear leg frames 4 and 5 are prevented from being folded in a state in which the front and rear leg frames 7 and 7 cross the opening grooves 12 and 22, The front and rear leg frames 4 and 5 are separated from the communication grooves 16 and 26 and the communication holes 14 and 24 so that the open grooves 12 and 22 are opened, So that it can be folded around the hinge portions 10 and 20.

When the ends of the free legs of the front and rear leg frames 4 and 5 are positioned in contact with the floor by connecting the shoWs 40 and 50 having excellent elasticity and high friction coefficient, So that it can be safely used.

Next, the front and rear pole frames 6 and 7 are engaged with the communication holes 16 and 26 of the front and rear hubs 1 and 2 and the communication holes 14 and 24, respectively, (24), and the other end portion is separated from the coupling groove (80) of the sheet cloth (8), and the other end portion is separated from the coupling groove So as to function as a seat back sheet. Of course, the front and rear pole frames 6 and 7 and the front and rear hubs 1 and 2 may be integrally separated from each other so that they can be separated or combined with each other, It is also possible to constitute a structure in which the pole frames 6 and 7 and the front and rear hubs 1 and 2 are separated from each other with elastic ropes interposed therebetween.

At this time, the sheet cloth 8 can be manufactured by designing the user comfortably by sewing using a weaving sheet, and the pawl engaging groove 80 can be manufactured using a cloth, It can be manufactured in various ways such as making a sewing work in one state.

7 to 9, in the present invention, as shown in Fig. 7 to Fig. 9, the central engaging groove 28 of the rear hub 2 is located at a position between the rear pole frames 7, And a sheet cloth 8 'is joined to the free ends of the front and rear pole frames 6 and 7 and the rear center pole frame 9 to form a sheet cloth 8' (8 ') is configured to allow the user to sit on the folding chair (8').

In this case, when the rear center pawl frame 9 is coupled with the seat cloth 8 ', the backrest and the headrest can be additionally configured to support the backrest and the backrest, The rear pawl frames 6 and 7 can be configured to act as supports for the support of the armrests or armrests in addition to the role of the support of the backrest or the support of the backrest with the rear central pawl frame 9, It is possible to realize various types of folding chairs according to the design of the sheet cloth 8 'and the various mutual configurations of the rearward pole frame 6, 7 and the rear central pawl frame 9 corresponding thereto.

Next, as a modification of the technical construction for coupling the front and rear leg frames 4, 5, the front and rear pole frames 6, 7 and the front and rear hubs 1, 2 to each other, The following description will focus on the example shown in Fig.

In this case, the front and rear hubs 1 and 2 are provided with leg frame opening grooves 42 and 52 corresponding to the opening grooves 12 and 22 of the hubs 1 and 2 shown in Figs. And an elastic string 30 installed to be connected to the front and rear hubs 1 and 2 so as to be elastically pulled between the front and rear leg frames 4 and 5, And the open groove sloping section 42a (42a) is formed on the joint portions 44 (54) between the open grooves 42 and 52 of the front and rear hubs 1 and 2 and the frames 4 and 5, 52a and the frame slanting sections 4a, 5a corresponding thereto are formed.

At this time, between the first guide grooves 42b and 52b and the second guide grooves 42c and 52c in the open grooves 42 and 52 of the front and rear hubs 1 and 2, ) 52d are connected to each other so that the opening grooves 42, 52 and the frames 4, 5 are easily separated and engaged.

Of course, the front and rear pole frames 6 and 7 adopt a technique in which the elastic grooves 30 are connected to the open grooves 62 and 72 formed in the front and rear hubs 1 and 2, The configuration can be made.

16 is a perspective view showing another example of the present invention. In this case, the head pillar 90 is separately joined to the end portion of the rear central pawl frame 9, (90).

The present invention thus constructed can be used as follows.

When the chair of the present invention is used, the front and rear leg frames 4 and 5 are folded and the front and rear pole frames 6 and 7 and the sheet cloths 8 and 8 ' Or unfolded or combined.

1 to 6, the front and rear leg frames 4 and 5 are engaged with the hinge portions 1 and 2 in a state where the central support frame 3 and the front and rear hubs 1 and 2 are engaged with each other, 10 and 20 in the opening grooves 12 and 22 and then through the communication holes 14 and 24 to engage the front and rear pole frames 6 and 7, The front and rear leg frames 4 and 5 are positioned such that the shoes 40 and 50 are positioned on the floor and the pawl joints 4 and 5 of the seat cloth 8 are engaged with each other, When the groove 80 is coupled with the free ends of the front and rear pole frames 6 and 7, the operation of unfolding the chair is completed and the user can sit on the seat cloth 8 and use it as a chair.

10 to 15, in the state where the central support frame 3 and the front and rear hubs 1, 2 are engaged, the front and rear leg frames 4, The front and rear legs 1 and 2 and the front and rear leg frames 4 and 5 are engaged with each other so that the front and rear hubs 1 and 2 are coupled to each other by the elastic straps 30, And the opening portions 42 and 52 of the front and rear hubs 1 and 2 and the engaging portions 44 and 54 of the frames 4 and 5 are engaged with each other, The inclined end faces 42a and 52a and the corresponding frame inclined end faces 4a and 5a are structurally formed so that the open end inclined end faces 42a and 52a and the corresponding frame inclined end faces The portions 4a and 5a are engaged with each other while facing each other, so that mutual engagement is always performed at the correct position.

In the open grooves 42 and 52 of the front and rear hubs 1 and 2, an inclined guide groove 42d (52d) is formed between the first guide grooves 42b and 52b and the second guide grooves 42c and 52c. The first and second guide grooves 42b and 52b and the second guide grooves 42c and 52c when the open grooves 42 and 52 and the frames 4 and 5 are separated from each other, And the inclined guide grooves 42d and 52d, the frame 4 and the frame 5 can be engaged.

Of course, the front and rear pole frames 6 and 7 and the rear center pole frame 9 are engaged with the open grooves 62, 72 and 92 formed in the front and rear hubs 1 and 2, But they can be pulled and engaged with each other by the elastic string 3.

After the hub 1 and the various frames 4, 5, 6, 7, and 9 are fitted and unfolded, the front and rear leg frames 4, When the shoe 40 or 50 is positioned on the floor and the pole coupling grooves 80 of the sheet cloth 8 and the free ends of the front and rear pole frames 6 and 7 are engaged with each other, So that the user can sit on the sheet cloth 8 and use it as a chair.

7 to 9, when the rear central pawl frame 9 is adopted, the rear central pawl frame 9 is joined to the central engaging groove 28 of the rear hub 2, The cloth 8 'can be used as a chair by joining together the free ends of the pawl frames 6, 7 and 9.

At this time, a pair of hubs 1 and 2 to be positioned on both sides are disposed in the front-rear direction and the center support frame 3 is coupled between the hubs 1 and 2. The front hub 1 The front leg frame 4 is coupled to both the right and left sides and the rear leg frame 2 is connected to both the left and right sides of the rear leg frame 2. The position of the rear hub 2 is smaller than the position of the front hub 1 7 and 9 and the seat cloths 8 and 8 'which are engaged with these hubs 1 and 2 are arranged in such a manner that the center support frame 3 is located at a high position The center of gravity moves further forward than in the conventional chair, and the load distribution is distributed to the front, rear, left, and right sides of the chair by the correlation between the leg frames 4 and 5 and the pole frames 6, 7, , The balance is maintained in all directions so that the user can use it more safely.

In addition, it is possible to prevent the problem of parts breakage due to uneven load, which is a problem in the conventional chair, in the present invention in advance, and it is possible to prevent the problem that the hub 1 (2) The lengths of the leg frames 4 and 5 and the pole frames 6 and 7 are made equal to each other, thereby reducing the manufacturing cost due to the improvement in productivity and workability.

Further, the present invention improves some of the configurations of the pawl frames 7, 9 and the sheet cloths 8, 8 'so as to serve as an armrest, so that it can be comfortably used as well as convenient. (8) and (8) and the pole frames (6) (7) and (9) are separated and the pole frames (6), (7) and (9) are separated from the hub When the leg frames 4 and 5 are folded about the hinge portions 10 and 20 after the folding, the space occupied by these constituent members can be minimized and stored, So that it can be conveniently used.

1: front hub 2: rear hub,
3: central support frame, 4: front leg frame,
4a, 5a: frame inclined cross-section, 5: rear pole frame,
6: front pole frame, 7: rear pole frame,
8, 8 ': sheet cloth, 9: rear central pole frame,
10, 20: a hinge portion, 12, 22, 42, 52, 62, 72, 92:
14, 24: communicating hole, 16, 26: communicating groove,
28: central joining groove, 30: elastic string,
40, 50: shoe, 42a, 52a: opening groove inclined end face portion,
42b, 52b: first guide groove, 42c, 52c: second guide groove,
42d, 52d: an inclined guide groove, 80: a pole coupling groove,
90: Headrest

Claims (2)

A pair of front and rear hubs 1 and 2 to be positioned on both sides are disposed in the front and rear direction and a central support frame 3 is coupled between the front and rear hubs 1 and 2, And the rear leg frame 2 is connected to both the left and right sides so that the free end contacts the floor when the rear leg frame 5 is extended. The center hub 3 is inclined so that the rear hub 2 is located higher than the position of the front hub 1 so that the front hub frame 1 is supported by the front pole frame 6 And a rear pawl frame 7 is provided on both the left and right sides of the rear hub 2 and a sheet cloth 8 is attached to the free ends of the front and rear pawl frames 6, A configuration is made so that the user can sit on the cloth 8,
The front and rear hubs 1 and 2 are provided with the leg frame opening grooves 42 and 52 and the front and rear hubs 1 and 2 are fixed to the front and rear leg frames 4 and 5, And an elastic string (30) installed in a state of being connected to each other so as to be pulled out of the body,
The open groove slope section 42a (52a (52a)) is formed in the engagement groove 44 (54) between the open groove 42 (52) of the front and rear hubs 1 and 2 and the frame 4 And the frame slanting face sections 4a and 5a corresponding to the slanting face sections 4a and 5a are formed. The method according to claim 1,
An inclined guide groove 42d is formed between the first guide grooves 42b and 52b and the second guide grooves 42c and 52c in the opening grooves 42 and 52 of the front and rear hubs 1 and 2. [ (52d) are connected to each other so that the opening grooves (42) and (52) and the frames (4) and (5) are easily and smoothly operated when separated.

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