JP3958558B2 - Articulated chair - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connecting chair in which a plurality of seat plates are attached to two front and rear support rods supported by left and right legs.
[0002]
[Prior art]
A connecting chair in which a plurality of seats are attached to two front and rear support rods is disclosed in, for example, Japanese Utility Model Publication No. 5-25495.
[0003]
[Problems to be solved by the invention]
In this known connecting chair, a plurality of seat plates are attached to the two front and rear support rods, but the interval between the support rods is relatively short, so that the stability of the seat plate is poor, and the seat plate attachment The strength had to be maintained by increasing the thickness of the bracket.
[0004]
In view of the above-described problems, an object of the present invention is to provide a robust connecting chair having a stable seat plate.
[0005]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A pair of front and rear support rods facing in the left-right direction are attached to the upper part of the legs arranged with a space between the left and right, and a pair of left and right brackets facing in the front-rear direction are mounted on these support rods. In the connecting chair having a plurality of seat plates attached thereto, seat plate attachment portions are provided at the front and rear ends of each bracket, and the attachment portions to the front and rear support rods of each bracket are provided at the front and rear seats of the bracket. so as to be close to the plate mounting unit, large cities spacing of the front and rear support bars and the connecting portion connecting the other supporting rod on the end of the previous SL support rod, and a horizontal rod oriented in the longitudinal direction in the leg , sandwiched by a sandwiching member that faces the front-rear direction is disposed thereabove, in two places close to the supporting rod in the inside of the front and rear support bars, fastened by fastening means and the clamping member and a horizontal rod.
[0006]
(2) In the above item (1), a recess for removing the meat is provided on the lower surface of the clamping member, and a head of a set screw for connecting the support rod and another support rod is fitted in the recess. To do.
[0007]
(3) In the above item (1) or (2), a semicircular fitting groove into which the support rod is fitted is provided on the upper surface of the horizontal rod in the leg , and the short portion provided in the center of the bottom of the fitting groove. A vertical threaded screw hole in which a projection having a size is fitted into a through hole provided at the end of a support rod, and the through hole is formed in a connecting rod provided at the end of another support rod. It is consistent with, you coupled by threaded set screw from above.
[0008]
( 4 ) In any one of the above items (1) to ( 3 ) , a plurality of support rods are connected in the left-right direction to form front and rear support rods, and they are connected to the leg in three or more locations in the left-right direction. Support by.
[0009]
(5) In any of the above items (1) to (4), a table is attached adjacent to the seat plate at an appropriate position in the left-right direction of the front and rear support rods.
[0010]
(6) In any one of the above items (1) to (5), the front and rear leg rods are provided so as to expand downward in the front-rear direction from the front and rear end portions of the horizontal rod.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view of a connecting chair according to an embodiment of the present invention.
This connecting chair is composed of front and rear leg rods (1a) (1a) that extend downward and a horizontal rod (1b) that connects the upper ends of both leg rods (1a) (1a). It has one leg (1). These three legs (1) support both ends and the middle part, for example on the two front and rear support rods (2a) (2b) made of steel pipes facing in the left-right direction. Seat plates (3) with backrest (4 in the illustrated example) are attached.
[0012]
FIG. 2 is an exploded perspective view showing the right end portion of the connecting chair together with optional parts.
As is clear from this figure, the horizontal rod (1b) of the leg (1) is sufficiently longer in the front-rear direction than the conventional leg, and the total length of the seat plate (3) in the front-rear direction. Of sufficient length to reach a substantial length of the. A semi-cylindrical fitting groove (4) extending in the left-right direction is formed at both front and rear ends of the upper surface of the horizontal rod (1b).
[0013]
Two hollow support rods (2a) and (2b) extending in the left-right direction and fitted in the front and rear fitting grooves (4) are provided at the front and rear ends of a plurality of brackets (5) facing in the front-rear direction. The near lower surface is fixed by welding from above. As shown in FIG. 3, the bracket (5) is a metal member having a U-shaped cross-section, and a recessed groove (6) is formed in the mounting portion of the support rods (2a) and (2b). It is fitted and welded to the flanges (2a) and (2b).
The welding position of the bracket (5) to the support rods (2a) and (2b) is a position corresponding to the left and right sides of the seat plate (3).
[0014]
Further, as shown in FIGS. 2 and 3, the front and rear ends of the bracket (5) protrude forward and backward from the support rods (2a) and (2b), and the screw insertion holes (7 ) Is drilled.
[0015]
With the set screw (8) inserted into the screw insertion hole (7), the front and rear portions of the lower surface of the seat plate (3) are fixed to the front and rear portions of the bracket (5).
[0016]
Cushion bodies (9) and (10) are mounted on the seat portion and the backrest portion of the seat plate (3), respectively.
[0017]
As shown in FIGS. 3, 4 and 5, the ends of the support rods (2 a) and (2 b) (and the central portion are not shown) are mounted on the upper surface of the leg (1). It is fixed in place.
A vertical through hole (11) is formed at the end of the support rod (2a) (2b). On the other hand, in the center of the bottom of each fitting groove (4) in the leg (1), a short projection (12) having a size capable of fitting into the through hole (11) is provided.
[0018]
Opposing the horizontal rod (1b) of the leg (1), a clamping member (13) is disposed above the support rods (2a) (2b). The sandwiching member (13) shown in the figure is a die-cast member having a U-shaped downward cross section, and a semicircular fitting groove (fitting to the support rods (1a) and (1b) is provided at both front and rear ends of the lower surface thereof. 14) is provided.
[0019]
6 is an enlarged side view showing the connecting portion (15) with the support rods (2a) and (2b) in the leg, and FIG. 7 is a longitudinal front view taken along the line VII-VII in FIG.
[0020]
As shown in FIG. 6, the connecting portion (15) of the leg with the support rod (2a) (2b) is composed of a lower member formed by the horizontal rod (1b) of the leg (1) and a clamping member above it. And an upper member formed by (13). The upper surface other than the fitting groove (4) in the horizontal rod (1b) of the leg (1) as the lower member is flush with the upper surface other than the fitting groove (14) in the clamping member (13) as the upper member. The support rods (2a) and (2b) are fitted into the fitting grooves (4) and (14), and the support rods (2a) and (2b) are supported by the horizontal rod (1b) and the clamping member (13). ) Is held so that the upper surface of the horizontal rod (1b) and the lower surface of the clamping member (13) are slightly separated by a distance (d) and are parallel to each other.
[0021]
Further, on the lower surface of the sandwiching member (13) other than the fitting groove (14) and the upper surface of the leg (1) other than the fitting groove (4) in the horizontal rod (1b), the peripheral portion is left and the meat is removed. Recesses (16) and (17) are formed.
Further, a convex portion (18) facing downward is projected at the center in the front-rear direction of the peripheral edge portion of the lower surface of the clamping member (13). The height of the projection (18) is the same as or slightly smaller than the distance (d).
[0022]
Between the protrusion (18) on the lower surface of the clamping member (13) and each fitting groove (14) which is an attachment portion of the support rod (2a) (2b), a screw hole (19) (19 ) And a through hole (20) facing upward and downward is formed on the upper surface of the horizontal rod (1b) of the leg (1) facing each other. By tightening the set screw (21), which is the fastening means inserted more, into the screw hole (19), the horizontal rod (1b) and the clamping member (13) are connected to both the support rods (2a) (2b). It can be fastened at two locations close to the.
[0023]
In assembly, the through hole (11) at the end of the support rod (2a) (2b) to which the plurality of brackets (5) are welded is used as the projection (12) of the horizontal rod (1b) in the leg (1). And the fitting groove (14) of the clamping member (13) is fitted to the upper part of the support rod (2a) (2b), and the horizontal rod is located near the support rod (2a) (2b). From below (1b), the set screw (21) is inserted into the through hole (20) (FIGS. 4 and 6) and screwed into the screw hole (19) (FIG. 3).
[0024]
At this time, the upper surface of the horizontal rod (1b) and the lower surface of the clamping member (13) are in contact with each other at the convex portion (18) at the center in the front-rear direction, and the others are separated by a slight distance (d). The tightening force by the set screw (21) acts on the front and rear support rods (2a) and (2b) separately with a half-length moment arm with the central convex part (18) as a fulcrum. The force to be applied is halved compared to the case where there is no convex portion (18), and an unreasonable stress is not applied to the horizontal rod (1b) and the sandwiching member (13).
An end cap (22) (FIG. 5) is attached to the open end of the support rod (2a) (2b).
[0025]
The above steps are easy to work if they are performed upside down with respect to FIG. The intermediate leg (1) is attached in the same manner.
[0026]
Next, as shown in FIG. 2, a set screw (8) is inserted from below the screw insertion holes (7) at both front and rear ends of the bracket (5), and is inserted into the seat plate (3). By attaching the seat plate (3). A seat cushion (9) and a backrest cushion (10) are attached to the seat plate (3).
[0027]
As an option, as shown in FIG. 2, a holding member (25) having a support (24) having an armrest (23) on the upper part, or a support (27) having a tablet (table) (26) on the upper part, was provided. The clamping member (28) can be used in place of the clamping member (13). In these cases, since the clamping members (25) and (28) are long in the front-rear direction, the support of the columns (24) and (27) is stabilized.
[0028]
As shown in FIGS. 2, 8, and 9, instead of inserting the end cap (12) into the open end of the support rods (2a) and (2b), another support rod (29) is extended here. Can be set. A connecting rod (30) is attached to the end of the support rod (29), for example, by welding (31), and a through screw hole (32) in the vertical direction formed in the connecting rod (30). Is matched with the through hole (7) at the end of the support rod (2a) (2b) engaged with the protrusion (12), and a set screw (33) is screwed in from above to connect.
Thus, if the support rod (29) is extended and the leg (1) is attached to the appropriate position, the seat plate (3) can be added.
[0029]
Similarly, if the table support rod (34) shown in FIG. 2 is attached, the joint table (35) can be attached to the side of the seat plate (3).
[0030]
Furthermore, as shown in FIG. 2, it is the same as the above-mentioned clamping member (13) at a plurality of positions in the left and right direction of the two supporting rods (2a) and (2b) (only one is illustrated in the figure). The upper member (36) has the same structure as the above-described horizontal rod (1b), and the upper member (36) and the lower member (37) whose upper and lower shapes are symmetrical to each other, both support rods (2a) ( 2b) is provided to hold the connecting member (38) for connection to another connecting chair (furniture), and either the upper member (36) or the lower member (37) (here, the upper member) By connecting an intermediate member (39) connected to a similar clamping member (38) provided on another connecting chair (not shown) disposed back to back to the member (36)), two rows of connecting chairs are obtained. It can be connected back to back.
[0031]
【The invention's effect】
According to the invention of claim 1 to 3 wherein the stability of the seat plate well, robust coupling the chair is obtained. Further, if the support rod is extended in this way and the legs are attached at appropriate positions, the seat plate can be added.
[0032]
According to invention of Claim 4 , an armrest, a table, etc. can be installed in a connection chair easily and firmly.
[0033]
According to the fifth aspect of the present invention, a so-called joint table can be provided on the side of the seat plate, and a luggage or the like can be placed on the table and used conveniently.
[0034]
According to invention of Claim 6, a stable connection chair can be formed.
[Brief description of the drawings]
FIG. 1 is a perspective view of a connecting chair according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing the right end portion of the connecting chair together with optional parts.
FIG. 3 is an exploded perspective view of the vicinity of the right end portion of the connecting chair as seen from the front lower side.
4 is an enlarged exploded perspective view showing a part of the portion shown in FIG. 3 further enlarged. FIG.
FIG. 5 is an enlarged longitudinal sectional front view showing a state where the parts shown in FIG. 4 are assembled.
FIG. 6 is also an enlarged side view of the upper part of the leg.
7 is an enlarged longitudinal front view taken along line VII-VII in FIG. 6;
8 is an enlarged exploded perspective view similar to FIG. 4 when another support rod is extended at the end of the support rod of the portion shown in FIG.
FIG. 9 is an enlarged longitudinal sectional front view showing a state where the parts shown in FIG. 8 are assembled.
[Explanation of symbols]
(1) Leg
(1a) Leg
(1b) Horizontal rod (lower member)
(2a) (2b) Support rod
(3) Seat plate
(4) Mating groove
(5) Bracket
(6) Concave groove (support hook mounting part)
(7) Screw insertion hole (seat plate mounting part)
(8) Set screw
(9) (10) Cushion body
(11) Through hole
(12) Protrusion
(13) Holding member (upper member)
(14) Mating groove
(15) Connecting part
(16) (17) Recess
(18) Convex
(19) Screw hole
(20) Through hole
(21) Set screw (fastening means)
(22) End cap
(23) Armrest
(24) Prop
(25) clamping member
(26) Tablet (table)
(27) Prop
(28) Holding member
(29) Support rod
(30) Connecting rod
(31) Welding
(32) Screw through hole
(33) Set screw
(34) Table support rod
(35) Joint table
(36) Upper member
(37) Lower member
(38) Holding member
(39) Intermediate member

Claims (6)

A pair of front and rear support rods facing in the left-right direction are attached to the upper part of the legs that are spaced apart from each other on the left and right, and a plurality of left and right pairs of brackets facing in the front-rear direction are mounted on these support rods. In the connecting chair to which the seat plate is attached, the seat plate attaching portions are provided at the front and rear ends of the brackets, and the attachment portions to the front and rear support rods of the brackets are the front and rear seat plate attaching portions of the bracket. A connecting portion in which the distance between the front and rear support rods is increased and another support rod is connected to the end portion of the support rod, and a horizontal rod facing in the front-rear direction on the leg, and above that The connecting member characterized in that the holding member and the horizontal rod are clamped by the clamping means at two positions close to the supporting rods inside the front and rear support rods, sandwiched by the disposed clamping members facing in the front-rear direction. Chair. The connecting chair according to claim 1 , wherein a recess for removing the meat is provided on the lower surface of the clamping member, and a head of a set screw for connecting the support rod and another support rod is fitted in the recess . A semicircular fitting groove into which the support rod is fitted is provided on the upper surface of the horizontal rod in the leg, and a short protrusion provided at the bottom center of the fitting groove is provided at the end of the support rod. Fits into the hole, and further matches the through hole with the vertical through screw hole drilled in the connecting rod provided at the end of another support rod, and then connects by screwing a set screw from above The connecting chair according to claim 1 or 2. The connecting chair according to any one of claims 1 to 3 , wherein the holding member is provided with a support for supporting an armrest or a table.   The connection chair according to any one of claims 1 to 4, wherein a table is attached adjacent to the seat plate at appropriate positions in the left-right direction of the front and rear support rods.   The connecting chair according to any one of claims 1 to 5, wherein the front and rear leg rods are provided so as to expand downward in the front-rear direction from the front and rear ends of the horizontal rod.

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