JP3145808U - Folding chair back support bar structure - Google Patents

Abstract

An improved structure for a back support bar of a folding chair is provided.
A folding back support bar improvement structure mainly comprising a front foot bar, a rear foot bar, a cross support plate, an armrest support bar, a support horizontal bar, and a seat. A convex spherical block 111 is provided on the rear foot bar, the length of the front foot bar is shorter than that of the rear foot bar, and the cross support plate is installed between the foot bars. The armrest support bar is installed between the front foot bar and the rear foot bar, thereby strengthening the fixing of the entire structure. The seat is divided into a seat portion 31 and a backrest seat 32. The supporting horizontal bar includes a ring, a horizontal bar 22, and a fixing ring 23. The ring is fitted onto the hind leg bar, and one end of the horizontal bar. A convex block is provided on the base bar, and the fixing ring is installed at the other end of the horizontal bar, and another hind leg bar is fixed thereto.
[Selection] Figure 1

Description

  The present invention relates to a structure of a back support bar of a folding chair, and more particularly to an improved structure of a back support bar of a folding chair that can be applied to a vertical or horizontal folding chair and can strengthen the support force of front and rear foot bars.

As shown in FIG. 15, FIG. 16, FIG. 17, and FIG. 18, the structure of the conventional vertical folding chair is such that the front and rear foot bars (11) are independent of each other, and the two rear foot bars (11) are interposed between them. There is no support structure. Therefore, when the user sits on the folding chair, the seat (31) (FIG. 18) and the backrest (32) receive the weight of the user, and the forefoot bar (10) and the rear foot that connect the seat (31) and the backrest (32). The rod (11) receives pressure and tilts inward. The lower part of the front foot bar (10) and the rear foot bar (11) receives the weight of the seat (31), but the force is distributed to the armrest bar (13).
However, since there is no support structure between the two hind sticks (11), the weight received by the backrest (32) cannot be dispersed, and if used for a long time, it will be deformed by the weight, causing damage to the structure and safety. Because there was a concern in terms, it was necessary to improve.
JP 2002-360371 A JP-A-2005-279123

  In order to solve the drawbacks of the known structure, the present invention has a forefoot bar, a rear foot bar, a cross support plate, an armrest support bar, a seat, and a support horizontal bar, and is folded so as not to be deformed by the weight of the body weight even after long use The main object is to provide an improved structure for the back support bar of the chair.

In order to solve the above-mentioned problems, the present invention includes a front leg bar, a rear leg bar, a cross support plate, an armrest support bar, a support horizontal bar, and a seat, and the support horizontal bar is used for a rear leg bar of a chair that is folded vertically. By placing it sideways in between, the backrest seat of the chair receives pressure and deforms inward when the user sits down, thereby compressing the rear leg bar to prevent damage due to deformation, and
The support horizontal bar is a structure of a back support bar for a folding chair, which can be installed at any position between two rear leg bars.

  According to the present invention, by installing the support horizontal bar, the support force of the two rear foot bars is strengthened, and the backrest seat is prevented from being deformed inward due to pressure, so the overall structure is more secure It becomes that. Moreover, by installing a ring, a horizontal bar, and a fixed ring, it is not necessary to fold the added support horizontal bar by simply removing them when folding.

An embodiment of an improved structure of the back support bar of the preferred folding chair of the present invention will be described with reference to the drawings.
1, 2, 3, 4, 5, and 6 show a structure for improving a back support bar of a folding chair according to an embodiment of the present invention. It consists mainly of a front foot bar (10), a rear foot bar (11), a cross support plate (12), an armrest support bar (13), a support horizontal bar (20), and a seat (30). A convex spherical block (111) is provided on the rear foot bar (11), and the convex spherical block (111) can be installed at any position of the rear foot bar (11), and the support horizontal bar (20) The height of the is fixed. The length of the front foot bar (10) is shorter than that of the rear foot bar (11), and the cross support plate (12) is installed so as to intersect between the respective foot bars to form a joint to be folded. The armrest support bar (13) is installed between the front foot bar (10) and the rear foot bar (11) to support the entire structure.

  As shown in FIG. 6, the supporting horizontal bar (20) includes a ring (21), a horizontal bar (22), and a fixing ring (23), and the ring (21) is fitted to the hind leg bar (11). The joint concave tank (211) provided protruding from (21) is fitted with a joint convex block (221) provided at one end of the horizontal bar (22) to form a rotary joint. The horizontal bar (22) can be a round bar, an arch, a U-shape, or any other shape that fits the human body. The fixing ring (23) is installed at the other end of the horizontal bar (22), and is fitted and fixed to the rear foot bar (11). The support bar (20) can be installed at any position between the two hind legs (11).

  The seat (30) includes a sitting seat (31) and a backrest seat (32), and is installed through the front foot bar (10) and the rear foot bar (11).

  As shown in FIG. 2, when the folding chair is unfolded and used, the ring (21) is fitted to one hind leg bar (11) and applied to the convex spherical block (111). The retaining ring (23) is fitted to another hind leg bar (11) and is also applied to the convex spherical block (111), so that the entire structure of the support horizontal bar (20) is between the two hind leg bars (11). Installed in to form a reinforced support structure.

  4 and 5, when folding the folding chair, remove the fixing ring (23) from the hind leg bar (11) and rotate the horizontal bar (22) around the ring (21) to the back of the chair. When combined with the rear foot bar (11), the support horizontal bar (20) does not hinder the folding.

  FIG. 7 shows an embodiment of the present invention. Change the both ends of the support horizontal bar (20) shown in FIG. 6 into a cap (25) and a fixing cap (26), and fix it directly to the tip of the two hind leg bars (11). ).

  FIG. 8 shows a second embodiment of the present invention. The double ring cap support horizontal bar (27) shown in FIG. 7 is installed at the tip of the two hind leg bars (11) of the vertical folding chair. The armrest support bar (13) is not installed, Increase the sitting width and angle.

  FIG. 9 shows a third embodiment of the present invention. A bifurcated cap (24) is installed at the tip of the hind leg bar (11) and is fitted to the armrest support bar (13) and the horizontal bar (22), respectively. By connecting the horizontal bar (22) to the fixed cap (26), the armrest support bar (13) and the horizontal bar (22) are formed in an L shape, so that the user can use the armrest support bar (13) or the horizontal bar. (22) You can sit leaning against it.

  FIG. 10 is a schematic diagram of the three-dimensional structure of the conventional structure 2. A folding chair having a folding-type foot support (40). The folding type foot support (40) has two support bars (41) each having an X-shaped cross support device (42) in the center, and is folded or opened together with the entire structure. FIG. 11 shows a fourth embodiment of the present invention. The support bar (20) can be fitted to the bottoms of the two support bars (41) of the foot support (40) instead of the X-shaped cross support device (42) of FIG.

  12, 13, and 14 show a fifth embodiment of the present invention. The support horizontal bar (50) includes a ring (51), a horizontal bar (52), and a connection part (53). The ring (51) is provided with a joining tank (511) and is fitted to the rear foot bar (11). A joint convex block (521) is provided at one end of the horizontal bar (52) and connected to the joining tank (511) of the ring (51) to form a rotatable joint. The connecting part (53) is installed at the other end of the horizontal bar (52), and the other end is connected to the second horizontal bar (52) and then connected to the second ring (51). Mates with foot bar (11).

  FIGS. 19 and 20 are a three-dimensional schematic diagram and a three-dimensional structure folding diagram of the conventional structure three. A folding chair that folds horizontally. It includes an outer frame (60) with a square shape, two U-shaped seat frames (61), and two back bars (62). The two seat frames (61) are positioned between the two outer frame frames (60) and have a structure that can be crossed and opened sideways. The two back bars (62) are respectively installed on the two outer frame frames (60). FIG. 21 shows a sixth embodiment of the present invention. Install the seat (63) between the two seat frames (61), and install the support bar (20) structure shown in FIG. 6 of the present invention between the two back bars (62). Then, the lateral support force of the two back bars (62) is strengthened.

As described above, the embodiment of the present invention mainly comprises a forefoot bar, a rear foot bar, a cross support plate, an armrest support bar, a seat, and a support horizontal bar, and the support horizontal bar is a ring, a horizontal bar, and a fixed ring. The seat includes a sitting seat and a backrest seat.
Therefore, the advantage 1 is that by installing one support horizontal bar between the two hind leg bars of the present invention, the support force of the two hind leg bars is strengthened, so that the backrest seat receives pressure. This prevents the inner structure from being deformed inward, and the overall structure becomes more solid.
Advantage 2 is that the ring of the present invention is fitted to the rear foot bar, and then the horizontal bar and the fixing ring are connected, and the fixing ring is further fitted to another rear foot bar. Therefore, when the folding chair is folded, only the fixing ring is taken, and the support horizontal bar does not hinder the folding chair.
Of course, the present invention is not limited to the above-described embodiment as long as the features of the present invention are not impaired.

It is a three-dimensional view of the present invention. It is a frame structure development view of the present invention. It is a skeleton structure folding view of the present invention. It is a support horizontal bar folding operation | movement figure of this invention. It is a support horizontal bar folding operation | movement two figure of this invention. It is a support bar structure exploded view of the present invention. 1 is a schematic diagram of an embodiment of the present invention. It is Example 2 schematic diagram of this invention. 3 is a schematic diagram of a third embodiment of the present invention. It is conventional structure two-dimensional structure schematic. 4 is a schematic diagram of an embodiment of the present invention. FIG. 5 is an exploded view of a support bar structure according to an embodiment of the present invention. FIG. 6 is a schematic diagram of the fifth embodiment of the present invention. FIG. 5 is a schematic diagram showing a fifth embodiment of the present invention. It is a frame structure development view of a conventional structure. It is a skeleton structure folding diagram of a conventional structure. It is the schematic diagram which shows the force which a conventional structure receives. It is the schematic diagram 2 which shows the force which a conventional structure receives. It is the three-dimensional structure schematic of the conventional structure three. It is a three-dimensional fold-down diagram of conventional structure three. It is the structure schematic of Example 6 of this invention.

Explanation of symbols

10 Forefoot stick
11 hind stick
111 Convex spherical block
12 Cross support plate
13 Armrest bar
20 Supporting horizontal bar
21 rings
211 Joining tank
22 Horizontal bar
221 Convex convex block
23 Retaining ring
24 bifurcated cap
25 cap
26 Retaining cap
27 Double ring cap support horizontal bar
30 seats
31 Sitting seat
32 Backrest seat
40 Foot support
41 Support bar
42 X-type cross support device
50 Supporting horizontal bar
51 rings
511 Bonding tank
52 Horizontal bar
521 Convex convex block
53 Connection parts
60 Outer frame
61 Seat frame
62 Back Stick
63 seats

Claims (5)

Including front leg bar, hind leg bar, cross support plate, armrest support bar, support horizontal bar, seat,
The support horizontal bar is installed horizontally between the rear leg bars of the chair that is folded vertically, so that when the user sits down, the backrest seat of the chair receives pressure and deforms inward, thereby compressing the rear leg bar. To prevent damage due to deformation, and
The structure of a back support bar for a folding chair, wherein the support bar can be installed at any position between two rear leg bars. A convex spherical block is provided at any position of the rear leg bar, the front leg bar is shorter than the rear leg bar, the armrest support bar is installed between the front leg bar and the rear leg bar, and
The support bar is provided with a ring, a horizontal bar, and a fixing ring, and the ring is fitted to the rear leg bar.
The ring is provided with a joining tank 211, a joint convex block is provided at one end of the horizontal bar,
By installing the fixing ring at the other end of the horizontal bar and fitting it to the rear leg bar, the support horizontal bar can be moved and folded while being positioned between the rear leg bars, and ,
2. The structure of a back support bar for a folding chair according to claim 1, wherein the seat includes a seat part and a back part, and is installed through the front leg bar and the rear leg bar.   3. The structure of the back support bar of the folding chair according to claim 2, wherein the horizontal bar can be formed in various shapes such as an arch shape, a bar shape, a U-shape, or other shapes conforming to human body engineering.   3. The folding device according to claim 2, wherein both ends of the support horizontal bar can be changed into a cap and a fixing cap, and a double ring cap support horizontal bar is formed to directly fix the ends of the two rear leg bars. The structure of the back support bar of the chair.   The support horizontal bar can be a joint structure composed of a ring, a horizontal bar, and a connecting part. The ring is provided with a joining tank, and a joining convex block is provided at one end of the transverse bar, and the joining tank is provided in the ring. 2. The structure of a back support bar break of a folding chair according to claim 1, wherein the structure is connected to a rotary joint to form a rotatable joint.

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