JP2005245868A - Chair with table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple-structured and highly operable chair with a table permitting stacking the table as folded at a low position and stably storing a large number of chairs in a storage space with limited height. <P>SOLUTION: The table 17 is mounted above a leg body 1 on one side supporting a seat 8 in such a way that the table can be moved to a horizontal use position A in the upper front of the seat 8 or to a first folding position C1 where the table is inclined outer-downward. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a chair with a table on which a small table is foldably mounted, and in particular, a chair with a table that enables stacking, in which a plurality of chairs with a table having the same structure and shape are stacked and accommodated. About.

  As a conventional chair with a table that can be folded, the table (including the memo stand and the table board) is lifted up in the almost horizontal use position with the axis facing the front and back arranged on the armrest. In general, it is attached to the folded position so as to be rotatable (see, for example, Patent Documents 1 to 3).

In addition, there is also one that enables stacking in which a plurality of chairs with tables having the same structure and shape are stacked and accommodated in a state where each table is raised to the folded position (see, for example, Patent Document 4). ).
Japanese Utility Model Publication No. 58-80060 Japanese Utility Model Publication No. 58-95756 Japanese Utility Model Publication No. 58-187347 Japanese Utility Model Publication No. 56-41580 (FIGS. 6 and 7)

  However, as described in Patent Document 4, a conventional chair with a table that can be stacked stacks in a state in which the table is raised, so that the overall height is increased and the height is restricted. A large number of chairs cannot be accommodated in the space, and the stability is poor.

  In view of the above-mentioned problems of the conventional technology, the present invention is capable of stacking a table in a folded state at a low position, so that a large number of chairs can be stabilized in a storage space whose height is limited. The object of the present invention is to provide a table chair with a simple structure and good operability.

  Another object of the present invention is to provide a chair with a table that can move an armrest together with a table from an original use position to an appropriate position for stacking.

According to the present invention, the above problem is solved as follows.
(1) A table is mounted on one side upper part of a leg that supports the seat so as to be movable between a use position that is substantially horizontal in the front upper direction of the seat and a folding position that is inclined outward and downward.

(2) In the above paragraph (1), a pivot that faces substantially in the front-rear direction is fixed to the upper part of one side of the leg, and the table is used on this pivot, and the folding position in which the pivot is inclined outward and downward from the pivot. And pivot as pivotable.

(3) In the above item (1), a first pivot fixed in the upper part of the leg and facing in the front-rear direction is pivotally attached to a second pivot that is directed in the vertical direction, and a table is pivotally attached to the second pivot. As a result, the table is pivoted upward from the use position about the first pivot, and the folding position is centered on the second pivot that is directed substantially in the left-right direction from the flip-up position, and vice versa. Can be rotated.

(4) In the above item (3), the elastic pressure that holds the second pivot elastically at the angular position of the second pivot relative to the first pivot when the table is located at the folding position between the first pivot and the second pivot. A holding means is provided.

(5) In any one of the above items (1) to (4), a table support shaft facing forward and an armrest support shaft facing backward are formed on the upper end portion of the support rod extending forward and upward from one side portion of the leg. The table is mounted on the table support shaft, and the armrest is mounted on the armrest support shaft.

(6) In the item (5) subordinate to the above item (4), the armrest is tilted toward the substantially horizontal use position and outward and downward on the armrest support shaft provided above the leg and facing substantially in the front-rear direction. It is attached to the folding position to be rotatable.

(7) In any of the above items (1) to (6), a plurality of chairs with a table, wherein the legs are shaped to expand downward when viewed from the front or side, and have the same structure and shape. Are stacked in the vertical direction, at least a part of the lower leg is fitted into the upper leg from below.

  According to the first aspect of the present invention, when the table is in the folded position, the table hangs outward and downward, and in this state, a plurality of table chairs having the same structure and shape are arranged in the vertical direction. By stacking, the upper and lower tables can approach each other in parallel without interfering with each other, and a large number of chairs can be stably stacked in a housing space whose height is limited.

According to the second aspect of the present invention, it is possible to easily move the table from the use position to the folding position by simply rotating the table outward, and to simplify the structure.
Further, since the table hangs outward and downward from the pivot when in the folding position, the table can be folded at a position lower than that of the conventional pivot to be raised and stopped, and stability is increased.

According to the third aspect of the present invention, the table is lifted upward from the use position about the first pivot, and then rotated from the lift position to the folding position about the first pivot. It is possible to move between the use position and the folding position without protruding so much outward from the width.
Therefore, there is no risk that the table will come into contact with the table or armrest of the adjacent seat while the table is moving, and it is safe.

  According to the fourth aspect of the present invention, the table can be prevented from moving loosely from the folding position or the flip-up position, and the operator can be notified of the optimum stop position of the table. In addition, since the table can be prevented from excessively rotating, it is possible to eliminate the risk that the table protrudes outward from the width of the chair and abuts against a table, an armrest or the like in the adjacent seat, which is safe.

  According to the fifth aspect of the present invention, the table and the armrest can be supported in a well-balanced manner without interfering with each other by the single support rod, and the structure can be simplified.

  According to the sixth aspect of the invention, the armrest can be moved to the folding position inclined outward and downward like the table, so that the armrest does not hinder stacking and the height is limited. A large number of chairs can be stacked in the accommodated storage space.

  According to invention of Claim 7, stacking as the whole chair is attained by making a leg into such a structure with the support structure of a table.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 12 show a first embodiment of the present invention.
As shown in FIGS. 1 to 3, the leg body (1) of this chair is composed of a pair of left and right front legs (2) and (2) tilted backward and a pair of left and right forward tilted legs arranged on the outside thereof. It is formed by connecting the upper ends of the rear legs (3) and (3) to each other with connecting rods (4) facing in the left-right direction and connecting members (5) and (5) coupled to both ends thereof. Yes.

In this example, the rear legs (3) and (3) are arranged outside the front legs (2) and (2), and the leg (1) is shaped to expand rearward in plan view. Conversely, the front legs (2) and (2) may be disposed outside the rear legs (3) and (3), and the leg body (1) may be shaped to expand forward in plan view.
Further, casters (not shown) may be attached to the lower ends of the front legs (2) and the rear legs (3) as necessary.

The upper back of the pair of left and right dorsal fins (6) and (6) extending rearward and upward along the extension line of the front legs (2) and (2) from the right and left connecting members (5) and (5) 7) Both sides are supported.
The rear part of the seat (8) is pivotally attached to the rear part of the left and right connecting members (5) and (5) with a shaft (not shown) facing in the left-right direction. Between the use position which is in contact with the upper surface of the connecting rod (4) and is substantially horizontal, and the lift-up position where it stops in contact with the front surface of the backrest (7) as shown in FIG. It can be rotated around the center.

  On the other hand (on the left in FIG. 1 in this example), the upper end of the cylindrical support rod (9) extending forward and upward along the extension line of the rear leg (3) from the connecting member (5) is shown in FIG. In the following, a support cap (10) made of aluminum light alloy, other metal, or hard synthetic resin material as shown in FIG. 6 is fitted, and at the front end of the support cap (10), A table support shaft (11) facing inward slightly from the front is provided, and an armrest support shaft (12) facing slightly outward from the rear is provided at the top. The orientation of the table support shaft (11) and the armrest support shaft (12) in the support cap (10) in plan view is preferably the same as the orientation of the rear leg (3) in plan view.

The armrest support shaft (12) has an armrest (13) with a substantially horizontal use position as shown by solid lines in FIGS. 2 and 3 and a rear portion at the front as shown by imaginary lines in FIGS. It is attached so as to be able to rotate at a folding position that inclines so as to be biased outward from the part and that inclines outward and downward as viewed from the front.
Since the specific mounting structure of the armrest (13) to the armrest support shaft (12) is not directly related to the present invention, a detailed description is omitted, but for example, a patent application related to the prior application of the applicant of the present application. It is preferable to have a structure as described in the specification and drawings attached to the application of 2003-305377 (JP 2005-2005).

The table support shaft (11) constitutes a first pivot (hereinafter, referred to as a first pivot (11)) slightly inclined so that the rear portion is biased outward from the front portion (hereinafter referred to as the first pivot (11)). 11) includes a shaft hole (15) provided in a diameter-expanded step (14a) (see FIG. 5) at the lower end of the second pivot (14) facing in a direction perpendicular to the upper direction (FIG. 7 and FIG. 8). Is pivoted.
On the outer periphery of the pivot fitting portion between the first pivot shaft (11) and the second pivot shaft (14), the second pivot shaft (14) is attached to the front end of the first tube portion (16) fitted on the first pivot shaft (11). An exterior body (16) in which a bottomed second cylindrical portion (16) for receiving and supporting the enlarged diameter step portion (14a) is continuously provided is fitted.

  The second pivot (14) is formed in a bracket (20) fixed with a screw (19) to the lower surface of the top plate (18) of the table (17), and is directed in the vertical direction in FIGS. The shaft hole (21) is pivotally fitted through the bush (22).

Thus, the table (17) having the top plate (18) and the bracket (20) has a use position (A) that is substantially horizontal at the front upper side of the seat (8), as shown by solid lines in FIGS. From the first pivot axis (11) as the center, as shown by the imaginary line in FIGS. 1 to 3, it is also shown by the imaginary line over the intermediate position (B1) that is almost directly above or slightly inclined inward. In addition, it is possible to turn to the lifting position (B2) inclined upward and upward, and from the intermediate position (B1) or the lifting position (B2), centering on the second pivot axis (14) facing substantially in the horizontal direction at that time, As shown by imaginary lines in FIGS. 1 to 3, the first folding position (C1) that is inclined outwardly and downward from the position of the first pivot (11), or substantially the first folding position as also indicated by imaginary lines. From the position of the pivot (11) to the second folding position (C2) that is directed downward or inclined inward and downward. , It can be substantially 180 ° rotational backward.
When positioned at the first folding position (C1) and the second folding position (C2), the table (17) is suspended from the first pivot (11) so that the rear part is biased outward from the front part. doing.

  When the table (17) is located at the use position (A), it is preferable that the upper surface of the top plate (18) is substantially level with the upper surface of the armrest (13) when it is at the use position. However, the top surface of the top plate (18) may be lower than the top surface of the armrest (13) so that it is convenient for operating the mouse of the personal computer.

  As shown in FIGS. 5 to 9, particularly FIGS. 8 and 9, the table (17) around the first pivot (11) is rotated between the first pivot (11) and the second pivot (14). First restricting means (23) is provided for restricting the moving range to a range from the use position (A) to the flip-up position (B2).

In this example, the first restricting means (23) is a slit (24) cut so as to reach the shaft hole (15) from the inner surface to the lower surface of the enlarged diameter step portion (14a) of the second pivot (14). ), And a diameter-increased head (26a) that is screwed into the screw hole (25) provided at the front end of the first pivot (11) and that is provided at the base end of the male screw (26a). 26b) is provided with a headed screw (26) adapted to fit into the slit (24), and when the table (17) is in the use position (A) as shown in FIG. When the upper end of the slit (24) comes into contact with the upper surface of 26b) and prevents the table (17) from tilting downward, as shown in FIG. 9, when the table (17) reaches the flip-up position (B2), The lower end of the slit (24) is in contact with the lower surface of the enlarged head (26b) to prevent the table (17) from rotating further outward.
A work hole (27) for attaching / detaching the head screw (26) to / from the first pivot (11) is provided at the bottom of the second cylindrical portion (16b) of the exterior body (16).

  As shown in FIGS. 5 and 7 to 9, the rotation range of the table (17) around the second pivot (14) is set at an intermediate position between the second pivot (14) and the bracket (20). A second regulating means (28) is provided for regulating the range from (B1) or the flip-up position (B2) to the first folding position (C1) or the second folding position (C2).

  In this example, the second restricting means (28) is provided at the upper end of the shaft hole (21) on the upper surface of the bracket (20), and a fan-shaped inwardly protruding portion (inwardly projecting in the centripetal direction) 29a) is provided with an enlarged stepped hole (29), and a part of the substantially circular outer periphery is formed with an outward projection (30a) projecting outward in a fan shape and drilled in the center. The stop plate (30) fitted into the square shaft (14b) projecting from the upper end of the second pivot (14) and the stop plate (30) with the spring washer (32) And a holding plate (33) that presses against the upper end surface of the second pivot (14), and a set screw (34) that fixes the holding plate (33) to the upper end surface of the square shaft (14b).

  The centripetal angles of the inward projecting portion (29a) and the outward projecting portion (30a) are each 90 °, and the table (17) is located at the use position (A), the intermediate position (B1) or the lifting position (B2). When one side end surface of the inward projection (29a) of the bracket (20) is in contact with one side end surface of the outward projection (30a) of the stop plate (30), the table (17) When the forward rotation is prevented and the table (17) is rotated approximately 180 ° rearward from these positions to reach the first folding position (C1) or the second folding position (C2), the bracket (20 ), The other side end surface of the inward projection (29a) abuts the other side end surface of the outward projection (30a) of the stop plate (30), preventing further rotation of the table (17). It has come to be.

  As shown in FIGS. 5 to 7 and 10, the table (17) is first folded between the support cap (10) to which the first pivot (11) is fixed and the exterior body (16). There is provided a pressure retaining means (35) for resiliently retaining the table (17) at these positions via the second pivot (14) when located at the position (C1) and the second folding position (C2). ing.

  In this example, the elastic holding means (35) includes two concave strips (36) facing the axial direction provided on the outer periphery of the cylindrical portion (10a) coaxial with the first pivot (11) of the support cap (10). (36) and, as shown in FIG. 10, are disposed in a substantially semicircular arc-shaped recess (37) provided on the inner surface of the first cylindrical portion (16a) of the exterior body (16), and both ends face outward. The bent portions (38a) and (38a) are respectively engaged with axially engaging grooves (39) and (39) provided on both sides of the concave portion (37) on the inner surface of the first cylindrical portion (16a). In addition, a leaf spring in which an inward projection (38b) formed by bending the center portion inwardly in a V shape can selectively engage with the two recesses (36), (36) ( 38), and when the table (17) reaches the first folding position (C1), the inwardly protruding portion (38b) of the leaf spring (38) engages with one of the recesses (36). When the table (17) reaches the second folding position (C2), the inward projection (38b) engages with the other recess (36). The Rukoto, has a table (17) to be able to repression held in their position.

In order to use this chair, as shown by solid lines in FIGS. 1 to 3, the table (17) is seated on the armrest (13) in the use position and the seat (8) in the use position. ) Is a use position (A). In this state, the seated person can write using the table (17).
At the time of taking off and seating, the table (17) is rotated to the flip-up position (B2), or is further rotated to the first folding position (C1) or the second folding position (C2). In this state, the table (17) does not hinder take-off and seating.

When it is desired to stack the chairs during storage, as shown by imaginary lines in FIGS. 1 to 3, the armrests (13) of each chair are set to the folding position and the table (17) is set to the first folding position (C1). 11), as shown in FIG. 11, the upper front and rear legs (2) and (3) straddle the lower front and rear legs (2) and (3), and the upper connection member (5 ) And stack multiple chairs.
At this time, since each table (17) is located at the first folding position (C1) and is inclined outward and downward, the upper and lower tables (17) and (17) do not interfere with each other and are parallel to each other. It is possible to approach a large number of chairs stably in a storage space with a limited height.
Further, by setting the armrest (13) in the folded position, the armrest (13) does not become an obstacle when each chair is stacked on another chair.

  When nesting is desired when the chair is stowed, each table (17) is slightly rotated from the first folding position (C1) to the second folding position (C2) from the above-mentioned stacking state. 4, the seat (8) is rotated to the flip-up position as shown in FIG. 4, and the left and right rear legs (3) and (3) of the front chair that expands rearward as shown in FIG. The front chair table (17) and armrest (13) are inclined so that the front legs (2), (2) of the rear chair are fitted from behind and the rear part is biased outward from the front part. ) And a plurality of chairs are overlapped in the front-rear direction so that the table (17) and the armrest (13) of the back chair are located at a position slightly inward and backward.

  At this time, each table (17) and armrest (13) are located at the second folding position (C2) and the folding position, respectively, and are inclined so that the rear part is biased outward from the front part. The tables (17) and (17) and the armrests (13) and (13) do not interfere with each other, and the rear table (17) and the armrest ( 13) can approach each other in parallel, and can stably nest a large number of chairs in a housing space in which the length in the front-rear direction is limited.

  Nesting can also be performed with each table (17) positioned at the first folding position (C1). In this case, each table (17) protrudes outward from the chair. ) Is preferably set as the second folding position (C2).

  In the above embodiment, both nesting and stacking can be performed. However, when it is not necessary to perform nesting, for example, as in the second embodiment shown in FIGS. A pivot (40) facing in the front-rear direction is fixed to the front surface of a support cap (10) provided at the upper end of a support rod (9) extending so as to be inclined forward and upward from the member (5), The table (41) on this pivot (40), as shown by a solid line, is in a position where it is almost horizontal in front of the seat (8), and as shown by an imaginary line, the folding position is inclined outward and downward. It is also possible to just pivot on and move.

  As shown in FIG. 15, the restricting means (42) for restricting the rotation range of the table (41) has the same configuration as the second restricting means (28) described above, and is provided on the outer peripheral surface of the pivot (40). A substantially sector-shaped outward projection (43) is provided, and an inward projection is formed on the inner surface of the enlarged diameter groove (45) provided on the inner surface of the bearing portion (44) of the table (41) to which the pivot (40) is fitted. When the table (41) is in the use position, one side end surface of the inward projection (46) is placed on one side end surface of the outward projection (43). Abutting to prevent downward rotation of the table (41), and when the table (41) rotates counterclockwise in FIG. 15, for example, 240 to 250 ° to reach the folding position, The other side end surface of the inward projection (46) abuts on the other side end surface of the outward projection (43) to prevent further rotation of the table (41).

  Other configurations are the same as those in the first embodiment, and the same reference numerals as those in the first embodiment are used for the same components, and detailed description thereof is omitted.

  Also in the second embodiment, the table (41) is placed in the folding position indicated by an imaginary line, and a plurality of chairs are stacked up and down so that the upper and lower tables (41) and (41) do not interfere with each other and are parallel to each other. The chairs can be stably stacked in a housing space with a limited height, and the same effects as described above as the effects of claims 1 and 2 can be achieved. be able to.

It is a front view of the 1st Embodiment of this invention. Similarly, it is a plan view. Similarly, it is a side view. Similarly, it is the side view made into the state at the time of nesting. Similarly, it is an exploded perspective view of an armrest and a mounting member of a table. Similarly, it is a side view of a support cap. Similarly, it is a longitudinal side view when longitudinally cut along a vertical plane including the center line of the first pivot when the table is in the use position. Similarly, it is a longitudinal front view along the VIII-VIII line of FIG. Similarly, it is a longitudinal front view of the same part as FIG. Similarly, it is an enlarged vertical front view along line XX in FIG. Similarly, it is a side view when two chairs are stacked. Similarly, it is a side view when two chairs are nested. It is a front view of the 2nd Embodiment of this invention. Similarly, it is a plan view. Similarly, it is an enlarged vertical front view along the XV-XV line of FIG.

Explanation of symbols

(1) Leg
(2) Front legs
(3) Rear legs
(4) Linkage
(5) Connecting member
(6) Backpack
(7) Backrest
(8) Seat
(9) Support rod
(10) Support cap
(10a) Tube part
(11) Table support shaft (first pivot)
(12) Armrest support shaft
(13) Armrest
(14) Second axis
(14a) Expanded step
(14b) Square axis
(15) Shaft hole
(16) Exterior body
(16a) 1st tube part
(16b) Second tube part
(17) Table
(18) Top plate
(19) Screw
(20) Bracket
(21) Shaft hole
(22) Bush
(23) First regulation means
(24) Slit
(25) Screw hole
(26) Headed screw
(26a) Male thread
(26b) Expanded head
(27) Working hole
(28) Second regulatory means
(29) Expanded stepped hole
(29a) Inward projection
(30) Stop plate
(30a) outward projection
(31) Square hole
(32) Spring washer
(33) Presser plate
(34) Set screw
(35) Repression holding means
(36) concave
(37) Recess
(38) Leaf spring
(38a) outward bending
(38b) Inward projection
(39) Engagement groove
(40) Axis
(41) Table
(42) Regulatory means
(43) Outward protrusion
(44) Bearing
(45) Expanded groove
(46) Inward projection
(A) Use position
(B1) Intermediate position
(B2) Splashing position
(C1) First folding position
(C2) Second folding position

Claims (7)

  A table mounted on one side upper part of a leg supporting the seat so as to be movable between a use position that is substantially horizontal in the front upper part of the seat and a folding position that is inclined outward and downward. With chair.   A pivot that is directed substantially in the front-rear direction is fixed to one upper part of the leg, and the table is pivotally attached to the pivot so as to be rotatable between a use position and a folding position that is inclined outward and downward from the pivot. Item 1. A chair with a table according to item 1.   By pivotally attaching a second pivot that faces up and down to a first pivot that is fixed to the upper part of one side of the leg and facing in the front-rear direction, the table is pivoted from the use position by pivotally attaching the table to the second pivot. 2. A flip-up position rotated upward about the first pivot axis, and a folding position about the second pivot axis, which is directed substantially in the left-right direction from the flip-up position, and rotatable in the opposite direction. Chair with table.   4. The pressure retaining means for resiliently retaining the second pivot at an angular position of the second pivot relative to the first pivot when the table is in the folded position, between the first pivot and the second pivot. Chair with table.   A table support shaft facing forward and an armrest support shaft facing backward are provided at the upper end of the support rod extending forward and upward from one side of the leg, and the table is attached to the table support shaft and supported by the armrest. The chair with a table in any one of Claims 1-4 which mounted | wore the armrest on the axis | shaft.   6. A table according to claim 5, wherein an armrest is mounted on an armrest support shaft provided above the leg body in a substantially front-rear direction so as to be rotatable between a substantially horizontal use position and a folding position inclined outward and downward. With chair.   When the legs are shaped to expand downward when viewed from the front or side, and a plurality of chairs with tables having the same structure and shape are stacked in the vertical direction, at least a part of the lower legs are The chair with a table according to any one of claims 1 to 6, wherein the chair is fitted into the upper leg body from below.

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