JP2006136570A - Chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chair with an excellent appearance by forming a handle without notching a back board or the like. <P>SOLUTION: To a back frame 2 formed by connecting the upper ends of a pair of left and right backrest support rods 4 erected from both side parts of the rear end of a leg frame 1 supporting a seat 8 by a horizontal connecting rod 5, the back board 11 is attached so as to cover the front surface of the horizontal connecting rod 5. By separating the center part of the horizontal connecting rod 5 from the upper end part rear surface of the back board 11 to the rear part, the part is turned to the handle 27. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a chair having a handle on an upper portion of a backrest.

  As a conventional chair of this type, for example, as shown in FIG. 8, the center of the upper end of the back plate or the back cushion (b) constituting the backrest (a) is cut out in a substantially U shape and opened. There is one in which a chair can be carried by using the center part of the downward U-shaped back frame (d) above the notch (c) as a handle (e).

  In the conventional chair as described above, since the upper end of the back plate or back cushion (b) is notched and opened, not only the appearance of the back plate or back cushion is poor, but also the handle (e) is exposed. Therefore, the overall appearance of the backrest is also bad.

  The present invention has been made in view of the above problems, and can form a handle without notching a back plate or the like, and prevents the handle from being exposed from the front of the backrest, thereby improving the appearance of the backrest. The object is to provide a chair that can be improved.

According to the present invention, the above problem is solved as follows.
(1) A back frame is formed on the back frame formed by connecting the upper ends of a pair of left and right back support ridges standing from both sides of the rear end of the leg frame that supports the seat with a horizontal connection rod. It is attached so as to cover the front surface of the connecting rod, and the central portion of the horizontal connecting rod is separated rearward from the rear surface of the upper end of the back plate.

(2) In the above item (1), at least the upper end portion of the back plate is curved in a circular arc shape in plan view toward the rear, and the horizontal connecting rod is gradually moved from the left and right ends toward the center portion from the rear surface of the back plate. Curve backwards to separate.

(3) In the above item (2), cover pieces whose rear ends are in contact with the front surfaces of both side portions of the lateral connection rod are projected rearward on the left and right rear surfaces excluding the central portion at the upper end of the back plate. A gap formed between the plate and the lateral connection rod is closed.

(4) In the above item (3), the horizontal connecting rod is made of a round bar, and the rear end of the cover piece protruding slightly below the upper end of the back plate is brought into contact with the center of the front surface. Let

(5) In the above item (3) or (4), the rear end of the upper piece of the mounting bracket having an inverted L shape when viewed from the side is fixed to the front surface of the horizontal connecting rod below the cover piece. Screw the downward piece that hangs down from the front edge to the rear surface of the back plate.

(6) In the above item (5), the periphery of the downward piece is covered with a cylindrical cover connected to the cover piece, and the screw is fixed by attaching a cap to the rear opening of the cylindrical cover. Cover the head.

According to the first aspect of the present invention, the handle can be formed without notching the upper end of the back plate, so that the appearance of the backrest is improved.
Moreover, since the handle is formed behind the upper end of the back plate, the handle is not exposed from the front of the backrest, and the appearance is further improved.

  According to the second aspect of the present invention, the upper end portion of the back plate and the lateral connection rod are opposed to each other in a streamline shape in a plan view. There is no aesthetics.

According to the invention described in claim 3, since the gap between the back plate and the lateral coupling rod is closed by the cover piece except for the handle at the center, the appearance from above is improved.
Moreover, since the cover piece is in contact with the front surface of the horizontal connecting rod, the upper end portion of the back plate is reinforced, and there is no possibility that the cover plate will be greatly bent backward.
Further, since the cover piece is integrally projected on the rear surface of the back plate, a cover as a separate member is not required, and the gap between the lateral connection rods can be obtained simply by attaching the back plate to the back frame. Can be easily blocked.

According to the fourth aspect of the present invention, the handle becomes easy to grasp, and the upper end of the back plate and the lateral connection rod are matched in a curved manner in a plan view, so that the beauty is increased.
Moreover, since the cover piece protrudes slightly below the upper end of the back plate, there is no profound feeling.

According to invention of Claim 5, the upper end part of a backplate can be stably attached in the state which formed the clearance gap for handling between them in the horizontal connection rod.
In addition, since the mounting bracket is located below the cover piece, the mounting bracket is not exposed from above, and the appearance is good.

  According to the sixth aspect of the present invention, the downward piece and the head of the screw are also covered with the cylindrical cover and the cap and are not exposed to the outside, so that the appearance is further improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of the chair of the present invention, FIG. 2 is a plan view, and FIG. 3 is an exploded perspective view.

  The chair frame consists of a pair of left and right leg frames (1), (1) joined in a substantially mouth shape when viewed from the side, and a back frame (2) connected to the upper end of the vertical frame (1a) at the rear of them. ).

  The rear vertical frame (1a) and the upper end of the front vertical frame (1b) in the left and right leg frames (1) are joined together by horizontal frames (3) and (3) fixed to their facing surfaces. ing. The leg frame (1) is made of a stainless material or the like having a flat rectangular tube-shaped cross section.

  The lower end of the front vertical frame (1b) and the rear end of the horizontal frame (1c) connected to the upper end are respectively the inner surface of the front end of the base frame (1d) and the rear vertical frame (1a). Combined to the side. Accordingly, as shown in FIG. 2, the horizontal dimension between the side edges of the front vertical frame (1b) and the horizontal frame (1c) is larger than the horizontal dimension of the rear vertical frame (1a) and the base frame (1d). And the upper and lower leg frames (1) are prevented from interfering with each other when stacking the chair.

  The back frame (2) is a pair of left and right backrest support rods (1) that stand integrally from the upper ends of the vertical frames (1a) at the rear of the left and right leg frames (1). 4) It is composed of (4) and a horizontal coupling rod (5) coupled to the opposed surfaces of their upper ends.

  The horizontal connecting rod (5) is made of a round bar material such as stainless steel, and the central portion excluding both end portions thereof is curved in an arc shape so as to protrude rearward in a plan view.

  Since the lateral connection rod (5) is formed on both side ends, bolts (7) inserted from the outside of the cylindrical mounting portion (4a) at the upper end of the backrest support rod (4) are inserted into the screw holes (6). By screwing, it is fixed to the opposing surfaces of the two backrest support ridges (4).

  On the upper surface of the horizontal frame (1c) and the rear horizontal frame (3) in the left and right leg frames (1), the front end is curved in a downward arc along the upper front of the front vertical frame (1b). A resin seat plate (8) is placed.

  The front and back lower surfaces of the seat plate (8) are supported by left and right support plates (9) and (9) fixed to the opposing surfaces of the horizontal frame (1c) in the left and right leg frames (1), and both supports It is fixed by a plurality of screws (10) screwed onto the lower surface of the seat plate (8) from below the plate (9) (see FIG. 2).

  A back plate (11) made of synthetic resin is attached to the front surface of the back frame (2), and the back frame (2) and the back plate (11) form a backrest.

  The back plate (11) has a central portion that is curved in a gentle arc shape toward the rear, and on the rear surfaces of both end portions, as shown in FIG. A ridge piece (12) that abuts on the inner surface of the left and right backrest support rods (4) having a flat rectangular tube-shaped cross section, and a lateral end portion of the backrest support rod (4) on the outer side. Short ribs (13) that are in contact with or close to the front surface project in a rearward direction along the vertical direction in parallel with each other.

  The ridge piece (12) has a substantially U-shape when viewed from the rear, and is continuously formed on the rear surface of the lower end of the back plate (11).

  The left and right ridges (12) are fitted between the inner side surfaces of the left and right backrest support ridges (4), so that the seat plate (11) is positioned in the left and right direction and moved in the left and right direction. Is prevented.

  A pair of surface fasteners having a required length in the vertical direction is formed on the concave portion (14) formed by the ridge piece (12) and the rib (13) and on the front surface of the backrest supporting rod (4) facing the concave portion (14). (15) (16) is bonded, and when the back plate (11) is attached to the back frame (2), the hook and loop fasteners (15) and (16) are hooked together, and both sides of the back plate (11) The end is in close contact with the front surface of the backrest support ridge (4).

  As shown in FIG. 3 and FIG. 5, an upward concave holding groove (17) is formed at the lower ends of the left and right protruding strips (12). Yes.

  The left and right holding grooves (17) are provided with support shafts (18) projecting inwardly on inner surfaces facing each other at the lower ends of the left and right backrest support rods (4) when the back plate (11) is attached. 18) is fitted from the top. Therefore, the lower part of the back plate (11) can be easily attached to the back frame (2) even if the lateral coupling rod (5) of the back frame (2) is fixed in advance.

  Near the center of the rear surface of the upper end of the back plate (11), as shown in FIGS. 3, 6 and 7, two mounting bosses (19) and (19) are projected rearwardly. Is covered with a cylindrical cover (20) formed integrally with the back plate (11) and having a rear surface opened. On the side edge of the upper end of the cylindrical cover (20), horizontal cover pieces (21, 21) are integrally formed toward the outer side of the back plate (11).

  The left and right cover pieces (21) have a smaller front-rear dimension on the outer end side and are gradually widened toward the inner end, and the rear end surface is back to the back frame (2) as shown in FIG. When the plate (11) is attached, it is a curved surface that matches the bent shape so as to come into contact with the front surface of the lateral coupling rod (5).

  Behind the left and right mounting bosses (19), on the front surface near the center of the horizontal connecting rod (5) is a rear side of the upper piece (22a) of the mounting bracket (22) having an approximately inverted L-shaped cross section when viewed from the side. The ends are fixed by welding so that they face forward.

  In order to form the backrest by attaching the backplate (11) to the back frame (2), first, the two protrusions on the rear surface of the backplate (11) between the opposing faces of the left and right backrest support rods (4) ( 12) is fitted, and the holding grooves (17) at the lower ends of both side portions of the back plate (11) are fitted from above to the support shaft (18) protruding from the lower end of the back support rod (4).

  When the back plate (11) is strongly pressed backward in this state, the hook and loop fasteners (15) and (16) are hooked and temporarily fixed, so that the back plate (11) does not fall forward.

  Moreover, even if both sides of the back plate (11) are deformed due to heat distortion after molding and a gap is formed between the front surface of the back support rod (4), the surface fastener (15) ( 16) brings both sides into close contact with each other, so that the appearance is improved and the back plate (11) does not rattle or float back and forth.

  Next, as shown in FIG. 6, the left and right mounting brackets (22) attached to the horizontal connecting rod (5) have the downward facing pieces (22b) connected to the left and right mounting bosses (19) of the back plate (11). The screw (24) that is in contact with the rear surface and inserted from the through hole (23) of the downward piece (22b) is screwed into the screw (25) to be formed on the mounting boss portion (19) and tightened.

  As a result, a backrest having a shape in which the rear surface of the upper end portion of the back plate (11) is separated from the front side of the lateral coupling rod (5) is formed, and as shown in FIG. The end abuts against the front surface of the horizontal connecting rod (5), and the gap formed between the rear surfaces of the left and right sides of the back plate (11) and the horizontal connecting rod (5) is closed.

  In addition, a hand-insertable handle is provided between the opposing surfaces of the left and right cover pieces (21) and between the opposing surfaces of the central front part of the lateral connection rod (5) and the central rear part of the back plate (11). The chair can be carried by forming the space (26) and using the central portion of the lateral connection rod (5) as the handle (27).

  The handle (27) is located behind the back plate (11) and is not visible from the front of the chair, so the appearance is good, and the handle (27) is cut off at the upper end of the back plate (11) as in the past. Since it is not necessary to form, the appearance of the backrest is also improved.

  The head of the screw (24) for fixing the back plate (11) and the downward piece (22b) of the mounting bracket (22) are synthetic resin having a substantially U-shaped cross section as shown in detail in FIG. The cap (28) made of metal is inserted into the cylindrical cover (20), and the inwardly engaging claws (28b) formed at the front ends of the left and right side pieces (28a) are By being elastically engaged with the front edges of both side ends of (22b), it is covered well.

  Further, as shown in FIG. 6, the upper piece (22a) of the mounting bracket (22) is also covered from above by the left and right horizontal cover pieces (21) so as not to be exposed to the outside.

It is a side view of the chair of this invention. Similarly, it is a partially cutaway plan view. Similarly, it is an exploded perspective view. FIG. 4 is an enlarged cross-sectional plan view taken along line IV-IV in FIG. 1. Similarly, it is a VV line expansion transverse plane view. FIG. 5 is an enlarged vertical side view taken along line VI-VI in FIG. 2. It is the VII-VII line crossing top view of FIG. It is a perspective view of the principal part of the conventional chair.

Explanation of symbols

(1) Leg frame
(1a) (1b) Vertical frame
(1c) Horizontal frame
(1d) Base frame
(2) Back frame
(3) Horizontal frame
(4) Back support
(4a) Cylindrical mounting part
(5) Horizontal connection rod
(6) Female thread hole
(7) Bolt
(8) Seat plate
(9) Support plate
(10) Screw
(11) Back plate
(12) Projection strip
(13) Rib
(14) Recess
(15) (16) Hook fastener
(17) Holding groove
(18) Support shaft
(19) Mounting boss
(20) Cylindrical cover
(21) Cover piece
(22) Mounting bracket
(22a) Upper piece
(22b) Downward strip
(23) Through hole
(24) Screw
(25) Female thread
(26) Hand space
(27) Handle
(28) Cap
(28a) Side piece
(28b) Locking claw

Claims (6)

  A back frame is formed on the back frame formed by connecting the upper ends of a pair of left and right backrest support rods standing from both sides of the rear end of the leg frame supporting the seat with a lateral connection rod. A chair characterized in that it is attached so as to cover the front surface, and the central portion of the horizontal connecting rod is separated rearward from the rear surface of the upper end portion of the back plate, thereby making this portion a handle.   At least the upper end portion of the back plate is bent in a circular arc shape when viewed from the rear, and the horizontal connecting rod is bent backward from the left and right ends toward the center portion so as to be gradually separated from the rear surface of the back plate. The chair according to claim 1.   A cover piece with the rear end abutting against the front of both sides of the horizontal connecting rod is projected rearward on the left and right rear surfaces excluding the central portion at the upper end of the back plate, and formed between the back plate and the horizontal connecting rod. The chair according to claim 2, wherein the gap is closed.   4. The chair according to claim 3, wherein the horizontal connecting rod is made of a round bar, and the rear end of the cover piece projecting slightly below the upper end of the back plate is brought into contact with the substantially central portion of the front surface thereof.   The rear end of the upper piece of the mounting bracket having an inverted L shape in side view is fixed to the front surface of the horizontal connecting rod below the cover piece, and the downward piece hanging from the front end of the upper piece is attached to the rear face of the back plate. The chair according to claim 3 or 4, wherein the chair is screwed. 6. The screw head is covered by covering the periphery of the downward piece with a cylindrical cover connected to the cover piece and fastening a cap to the rear opening of the cylindrical cover. Chairs.

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