JP4234618B2 - Chair - Google Patents

Description

  The present invention relates to a chair in which a seat plate can be rotated between a substantially horizontal use position and a substantially vertical storage position.

2. Description of the Related Art Conventionally, chairs that can rotate this type of seat plate are widely used because they are convenient for folding storage and nesting storage. That is, a seat plate is rotatably attached between the left and right rear legs, and the seat plate can be rotated between a use position and a storage position (see, for example, Patent Document 1).
JP 2001-128775 A

  However, in the folding chair as described in Patent Document 1, when the seat plate is rotated to the use position, not only the impact sound is generated due to the collision between the seat plate and the connection rod, but also the connection rod and the seat plate. There was a risk of scratching the back side. Also, in the case of so-called nesting storage in which each seat plate is rotated upward to store a plurality of chairs having the same structure in the front-rear direction, the surface of the seat plate of the front chair collides with a connecting rod or the like. There is a risk that the surface of the seat plate may be scratched or the cushioning property of the cushion material provided on the surface may deteriorate.

  In view of the above-mentioned problems of the prior art, the present invention can alleviate the impact between the seat plate and the connecting rod when used, and the seat plate and the connecting rod are damaged when nesting. It is an object of the present invention to provide a chair that can prevent the above-described problem and can simplify the structure.

According to the present invention, the above problem is solved as follows.
(1) A seat plate is pivotably attached to a seat plate support rod provided in the left and right direction, and the seat plate is brought into contact with a connecting rod provided at a front portion of the seat plate support rod in use. In the chair that is rotated upward during storage, the same plurality of portions that are in contact with each other when the seat plate in the connecting rod is in the use position and in which the seat plate is positioned in the upward storage position A cushioning material is provided at a portion where the seat plate of the front chair abuts during nesting for storing the chairs in front and back.

(2) In the above item (1), the buffer material is formed of a substantially C-shaped elastic body, and the buffer material is detachably fitted to the connecting rod.

(3) In the above item (1) or (2), a reinforcing rod is attached to the back surface of the seat plate, and the reinforcing rod is brought into contact with the cushioning material attached to the connecting rod.

(a) According to the first aspect of the present invention, since the cushioning material is attached to the contact portion of the connecting rod with which the seat plate abuts, the impact between the seat plate and the connecting rod when rotated to the use position. This reduces the impact noise and prevents the seat plate and connecting rods from being scratched.When nesting, the cushioning material comes into contact with the seat plate of the front chair, and the impact at the time of contact is reduced. It can alleviate and suppress impact noise and prevent the seat plate and the connecting rod from being damaged, and can also prevent the cushion of the cushion material from deteriorating.
Moreover, since the above two functions can be achieved with a single cushioning material, the number of parts can be reduced and the structure can be simplified.

(b) According to the invention described in claim 2, since the shock absorbing material is formed of an elastic body having a substantially C-shaped cross section, and the shock absorbing material is detachably fitted to the connecting rod, the shock absorbing material is worn and damaged. Can be easily replaced.

(c) According to the invention of claim 3, since the reinforcing rod attached to the back surface of the seat plate is brought into contact with the cushioning material, the seat plate does not directly contact the cushioning material. Abrasion and damage can be prevented, and the reinforcing rod also acts as a buffer, so that the buffering effect is further improved and the impact on the seat plate can be mitigated.

FIG. 1 is a side view of a chair according to an embodiment of the present invention, FIG. 2 is a side view when the chair is folded, and FIG. 3 is a perspective view of the chair when the chair is folded.
As shown in the figure, the chair (A) includes a leg (2) with casters (1), a backrest (3), and a seat plate (4).

  The leg (2) is tilted backward with its upper end fixed to the front of the rear heel (2a) (2a) near the upper end of the pair of left and right rear heels (2a) (2a). A pair of left and right foreheads (2b) and (2b), left and right foreboards (2b) and 2b, seat plate support rods (2c) facing in the left and right direction, and front connection rods ( 2d). The seat plate is rotatably supported by the seat plate support rod (2c). When used, the seat plate abuts on the connecting rod (2d) as shown in FIG. 1, and when folded, as shown in FIG. It rotates to come into contact with or close to the backrest (3).

The seat plate (4) includes a seat plate (6) having a seat frame portion (5) facing downward on the outer periphery, a cushion material (7) attached to the surface side of the seat plate (6), and a seat plate ( 6) a low-sized reinforcing rib (8) attached vertically and horizontally on the back side and a pair of high-sized reinforcing ribs (9) attached to the left and right outer sides.
On the back surface of the seat plate (4), two left and right reinforcing rods (10) facing the front and rear direction are attached opposite to the reinforcing rib (9).

  4 is an exploded perspective view of the reinforcing rod, FIG. 5 is a longitudinal side view of the reinforcing rod, FIG. 6 is a view taken along the line VI in FIG. 5, and FIG. FIG.

  The reinforcing rod (10) is made of an elastic hard synthetic resin material, and has a main body (10a) having a square cross section that gradually decreases in thickness toward the tip (left end in FIG. 5). As shown in FIG. 4, a side protruding edge (10b) is formed on the upper edge of both side surfaces, a front protruding edge (10c) and a lower protruding edge (10d) are formed on both front and rear ends, respectively, A shallow recess (10e) (see FIG. 5) and a plurality of mounting holes (10f) are formed. The reinforcing rod (10) is screwed to the boss (6a) of the seat plate (6) with a set screw (not shown) inserted from the mounting hole (10f).

  As shown in FIG. 4, the metal cover member (12) includes a side plate (12a) having a shape along the side protruding edge (10b), the front protruding edge (10c), and the rear protruding edge (10d) of the reinforcing rod (10). The metal cover member (12) is fitted in the recess (10e) of the main body (10a) of the reinforcing rod (10) and has a set screw (11), and the main body (10a). It is fixed to. Thereby, both the side surfaces and the back surface of the main body portion (10a) of the reinforcing rod (10) are covered and reinforced by the metal cover member (12).

  As shown in FIGS. 4 and 5, a U-shaped bearing hole (13) having an opening (13a) on the back side of the seat plate (15) is formed at the base of the reinforcing rod (10). . The opening (13a) of the bearing hole (13) faces the reinforcing rib (9), and a seat plate support rod (2c) is held between the bearing hole (13) and the reinforcing rib (9). Thus, the seat plate (4) can be rotated around the seat plate support rod (2c).

  As shown in FIGS. 5 and 6, a slit (14) communicating with the front and back is formed at the base (rear part) of the reinforcing rod (10) so as to intersect the bearing hole (13). On both side walls of the slit (14), first elastic ribs (15) are formed facing the back side of the seat plate (5) and are raised in the vertical direction. A second elastic rib (16) extending substantially parallel to the longitudinal direction of the reinforcing rod (10) is formed at a position substantially perpendicular to 15). A pin (17) projects from the outer peripheral surface of the seat plate support rod (2c) so as to enter the slit (14).

  As shown in FIG. 2, when the seat plate (5) is rotated upward, the first elastic rib (15) gets over the pin (17) while contacting it, and as shown in FIG. The pin (17) falls into the concave groove (18) between the first elastic rib (15) and the rear wall of the slit (14) by the moderation action. Thus, the seat plate (5) is stably held in the storage position facing upward by the engagement between the pin (17) and the first elastic rib (15), and does not move from the position.

  When the chair is used, as shown in FIG. 1, the seat plate (5) is rotated to a substantially horizontal use position, and the lower surface of the reinforcing rod (10) is brought into contact with the front connecting rod (2d). At this time, as shown in FIG. 5, the second elastic rib (16) gets over the pin (17) and engages the lower surface of the pin (17). Therefore, for example, the seat plate (5) is prevented from jumping up when standing up from the chair. However, since the seat plate (5) is placed on the front connecting rod (2d) by its gravity when stationary, the second elastic rib (15) is not necessarily provided.

  In the above embodiment, the elastic ribs (15) and (16) are formed on both side surfaces of the slit (14), but only one side may be used. Further, although the reinforcing rod (10) is also used as the reinforcing rod of the seat plate (4), the present invention is not limited to this. For example, a member dedicated to support is used such as the seat frame (5) or the seat plate (6). A structure fixed to an arbitrary location may be used.

  The coupling rod (2d) is provided with cushioning materials (19) at locations where the reinforcing rod (10) hits when the seat plate (4) is rotated to the use position, in the illustrated example, at two locations. The buffer material (19) has a substantially C-shaped cross section made of a synthetic resin material, and is detachably fitted to the connecting rod (2d) using its elasticity.

  As shown in FIG. 1, when the seat plate (4) is rotated to the use position, the reinforcing rod (10) collides with the connecting rod (2d) via the cushioning material (19), so that the impact sound is reduced. At the same time, the connecting rod (2d) and the reinforcing rod (10) are prevented from being damaged.

  FIG. 8 is a side view when a plurality of chairs having the same structure are nested by rotating the seat plate (4) to the storage position. When nesting the chairs, the surface (seat surface) of the seat plate (4) of the front chair (A1) collides with the connecting rod (2d) of the rear chair (A2) via the cushioning material (19). Therefore, the impact sound can be reduced, and the connection rod (2d) and the seat plate (4) can be prevented from being damaged, and the cushion of the cushion material (7) can be prevented from deteriorating.

  In the above embodiment, the seat plate (4) is prevented from coming into direct contact with the cushioning material (19), so that the seat plate (4) can be prevented from being worn or damaged, and the synthetic resin reinforcing rod ( 10) also plays a role of buffering, and the buffering effect is further improved. However, a sufficient effect can be expected even when the back surface of the seat plate (4) is in direct contact with the cushioning material (19).

It is a side view of the use condition of one Embodiment of this invention. Similarly, it is a side view at the time of folding. Similarly, it is the perspective view which looked at the chair at the time of folding from the front. Similarly, it is an exploded perspective view of a support member. Similarly, it is a vertical side view of the support member. Similarly, it is a VI arrow view of FIG. Similarly, it is an enlarged perspective view showing a part of a circle VII in FIG. Similarly, it is a side view at the time of nesting.

Explanation of symbols

(A) (A1) (A2) Chair
(1) Casters
(2) Leg
(2a) Rear end
(2b) outpost
(2c) Seat plate support rod
(2d) Linkage
(3) Backrest
(4) Seat plate
(5) Seat frame
(6) Seat plate
(6a) Boss
(7) Cushion material
(8) Reinforcement rib
(9) Reinforcement rib
(10) Reinforcing rod
(10a) Main unit
(10b) Side protruding edge
(10c) Front protruding edge
(10d) Rear protruding edge
(10f) Mounting hole
(11) Set screw
(12) Metal cover member
(13) Bearing hole
(13a) Opening
(14) Slit
(15) First elastic rib
(16) Second elastic rib
(17) Pin
(18) Concave groove
(19) cushioning material

Claims (3)

A seat plate is pivotally attached to a seat plate support rod provided in the left and right direction, and the seat plate is brought into contact with a connecting rod provided at the front portion of the seat plate support rod during use. In chairs that are sometimes pivoted upwards,
When the seating plate in the connecting rod comes into contact with the use position, the front chair is used for nesting in which a plurality of identical chairs in which the seating plate is positioned in the upward storage position are stacked one after another. A cushion characterized in that a cushioning material is provided at a portion where the seat plate abuts.   The chair according to claim 1, wherein the cushioning material is formed of a substantially C-shaped elastic body, and the cushioning material is detachably fitted to the connecting rod. The chair according to claim 1 or 2, wherein a reinforcing rod is attached to the back surface of the seat plate, and the reinforcing rod is brought into contact with a cushioning material attached to the connecting rod.

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