JPH11290156A - Writing table accomodating device for chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent a writing table and a chair from broken by comprising a writing table lock fitting which is engaged with the writing table positioned near an accomodating position which is extended in the lateral direction of the chair, for locking the rotation of the writing table around a first axis while permitting the rotation of the same around a second axis. SOLUTION: A writing table supporting arm 15 is connected with an upper end of a support 6 of a chair 1 rotatably around a first axis A extended in the lateral direction of the chair 1 by a shaft 7. A writing table mounting bracket 17 is connected with the writing table supporting arm 15 rotatably around a second axis B perpendicularly intercrossing the first axis A through two pins, and an almost L-shaped writing table 18 is fixed to the writing table mounting bracket 17. A writing table lock fitting 22 which is engaged with the writing table 18 for locking the rotation of the writing table 18 around the first axis A while permitting the rotation of the writing table 18 around the second axis B, is fixed to an upper front face of the support 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus used for a chair and for storing a memo table when not in use.
The present invention relates to a memo table storage device suitable for use as a movable chair that can be moved up and down between a stepped deployment position and a shelf-shaped storage position.

[0002]

2. Description of the Related Art As a memo table storage device for a chair, for example, a device disclosed by the present applicant in Japanese Utility Model Laid-Open Publication No. Sho 62-66540 has been known. It is used for a chair that can be turned upside down, and pivots around a first axis extending in the left-right direction of the chair on a column that stands upright beside the seat of the chair and supports the elbow of the chair. A memo table support arm movably connected to the memo table support member, and a memo table mounting member rotatably connected to the memo table support arm about a second axis orthogonal to the first axis. A memo table mounting bracket, a memo table fixed on the memo table mounting bracket, and always rotating the memo table mounting bracket around the second axis B so that the memo table extends in the left-right direction of the chair. A torsion spring as an elastic member for urging the chair, and the chair The memo table is fixed to the lower part of the chair and attached to the memo table mounting bracket on the back side of the memo table, thereby holding the memo table at the storage position extending in the left-right direction of the chair in front of the support column and below the seat. And a permanent magnet.

In such a memo table storage device for a chair,
When using the memo table, the occupant removes the memo table located in the storage position from the permanent magnet and rotates the memo table mounting bracket around the second axis while resisting the urging force of the torsion spring. The memo table is extended forward while moving the memo table and the memo table support arm together with the memo table and the memo table mounting bracket is moved to the first axis until the upper surface of the elbow portion inclined slightly backward and the second axis are parallel to each other. When pivoted around, the torsion spring pivots the memo table mounting bracket about the second axis by the urging force, and the memo table is placed on the upper surface of the elbow and extends in the left-right direction of the chair. Move to the use position. Then, when the memo table is not used, the occupant stands the memo table approximately vertically while rotating the memo table mounting bracket around the second axis while resisting the biasing force of the torsion spring. The memo support is rotated by rotating the memo support support arm together with the memo support and the memo support mount bracket forward around the first axis until the longitudinal direction of the extending support and the second axis are parallel to each other. When the torsion spring is turned down, the torsion spring rotates the memo table mounting bracket around the second axis by the biasing force to position the memo table in the storage position, and the permanent magnet
The memo table is held in its storage position by sucking the memo table mounting bracket on the back side of the memo table.

Therefore, according to the memo table storage device for a chair, when the memo table is used, the memo table can be deployed at the use position extending on the upper surface of the elbow and extending in the left-right direction of the chair. When not in use, the memo stand can be held in a storage position extending down the front of the column and extending in the left-right direction of the chair below the seat.

[0005]

In the above-mentioned conventional memo table storage device for chairs, there is no problem if the memo table is attracted and held by the permanent magnet at the storage position, but the memo table is supported when not in use. After dropping forward, there is a case where the memo table hits something and does not fully rotate around the second axis, and is in a state where it is not attracted and held by the permanent magnet. When the chair is moved forward to the shelf-like storage position, the memo table becomes its own weight as the chair falls forward.
Around the axis of the chair, and comes out of the front of the chair, and is caught between the floor and the chair in the state where the chair is left, and the memo table and the chair may be damaged.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a memo table storage device for a chair which advantageously solves the above-mentioned problems, and a memo table for a chair according to the present invention. The storage device is a memo stand that is rotatably connected to a support that stands upright beside a seat of a chair and supports an elbow of the chair around a first axis extending in the left-right direction of the chair. A supporting member, a memo table mounting member rotatably connected to the memo table supporting member around a second axis orthogonal to the first axis, and a memo table fixed to the memo table mounting member; An elastic member that constantly urges the memo table attachment member to rotate around the second axis so that the memo table extends in the left-right direction of the chair. Extends in the left-right direction of the chair in front of the support and below the seat A memo table hook that engages with the memo table located near the storage position and allows the memo table to rotate around the second axis while allowing the memo table to rotate around the first axis. A stopping means is provided.

In such a memo table storage device for a chair,
When using the memo table, the occupant first rotates the memo table mounting member around the second axis while resisting the urging force of the elastic member, and moves the memo table out of its storage position to the front, and then the elbow portion When the memo table support member is rotated about the first axis together with the memo table and the memo table mounting member until the upper surface is parallel to the second axis, the elastic member causes the memo table mounting member to be biased by the biasing force. By rotating the memo table around the second axis, the memo table is placed on the upper surface of the elbow portion and located at the use position extending in the left-right direction of the chair. Then, when the memo table is not used, the occupant first raises the memo table approximately vertically from its use position while rotating the memo table mounting member around the second axis while resisting the urging force of the elastic member, and then The memo table support member is rotated forward about the first axis together with the memo table and the memo table mounting member until the longitudinal direction of the column and the second axis are parallel to lower the memo table to the front of the column. Then, the elastic member rotates the memo table attaching member about the second axis by the urging force to position the memo table in the storage position. Even if the memo table cannot be completely rotated to the storage position, the memo table locking means engages with the memo table located near the storage position, and the second axis of the memo table. Rotation around the first axis of the memo table is stopped while allowing rotation around the memo table.

Therefore, according to this memo table storage device for a chair, when the memo table is used, the memo table can be deployed to the use position extending on the upper surface of the elbow and extending in the left-right direction of the chair. When the table is not in use, the memo table can be lowered to the front of the column and stored in the storage position extending in the left-right direction of the chair below the seat, and even if the memo table is strictly rotated to the storage position described above. Even when the memo table is not fully moved, the memo table engaging means engages with the memo table located in the vicinity of the storage position and rotates around the second axis of the memo table for re-moving to the use position. The rotation of the memo table is prevented while the rotation of the memo table is prevented around the first axis line. As it falls forward, the memo table is under its own weight around the first axis. Rotates to be obtained to prevent the exits in front of the chair, memo table and chairs can be reliably prevented from being damaged.

In the memo table storage device for a chair according to the present invention, the memo table hooking means is, for example, protrudingly provided on a front surface of a connecting pipe of the connecting chair, and the memo table is located near the storing position on the first axis. When trying to rotate around, it may come into contact with the end surface of the member protruding from the back side of the memo table or the inner surface of the square hole drilled on the back side of the memo table. And when the memo table attempts to rotate around the first axis from near the storage position, the memo table may be configured as a contact portion that comes into contact with an end surface of the memo table. With a simpler configuration, it is possible to engage with a memo table located near the storage position and to prevent the memo table from rotating around the first axis. Here, the contact portion may be provided, for example, by fixing a component to the upper front side of the column, or may be provided by forming a convex portion on the upper front side of the column.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Here, FIG. 1 is a side view showing an embodiment of a memo table storage device for a chair according to the present invention applied to a movable chair for a movable seat, and FIG. 2 is a memo for a chair of the embodiment. FIG. 3 is a front view showing the table storage device, FIG. 3 is a plan view showing the chair memo table storage device of the embodiment, and FIG. 4 is an exploded perspective view showing the chair memo table storage device of the embodiment. The symbol 1 in the figure is
Shown is a flippable chair for the moving bleachers.

As shown in FIGS. 1 to 3, a plurality of chairs 1 are connected by connecting pipes 2 to form a connected chair. Each chair 1 has a seat 3, a back 4, and an elbow. Part 5
And a column 6 erected on the connecting pipe 2 on the left and right sides of the seat 3. Here, the seat 3 is shown in FIGS.
2 and 3 is pivotally supported by the columns 6 on both sides so as to be rotatable between a use position tilted slightly downward as shown for the chair 1 and an upright position shown for the chair 1 in the center of FIGS. At the same time, when not in use, it is raised by the spring (not shown) to the above-mentioned upright position, and the elbow 5 is provided with the central part of the upper end of the column 6 as shown in FIG. 1 is rotatably supported by a column 6 through a shaft 7 inserted in a direction in which the axis extends in the left-right direction of the chair 1, and the rear end thereof is shown in FIGS.
As shown in FIG. 3, it is rotatably connected to the back part 4 via a pin 8 inserted therethrough. As shown in FIG. 1, the back 4 is supported by a support shaft 12 of a chair raising / lowering mechanism 11 on a floor 10 via a link member 9 integrally projecting from the lower end thereof.
The connecting pipe 2 is also connected to another supporting shaft 14 of the chair raising and lowering mechanism 11 on the floor 10 via a leg member 13 integrally projecting from the lower end thereof. It is connected and supported.

Thus, the back 4, the elbow 5, the column 6, and the chair raising / lowering mechanism 11 of each chair 1 are combined with the chair raising / lowering mechanism 11.
Are connected to each other by four pivots, namely, two support shafts 12 and 14, a shaft 7 located at the center of the elbow 5, and a pin 8 located at the rear end of the elbow 5. The chair raising and lowering mechanism 11 has a support shaft 14
By rotating by 90 °, the plurality of chairs 1 constituting the above-mentioned connected chair are integrated into a standing position shown by a solid line in FIG. 1 and a falling position shown by a dashed line for the right chair 1 in FIG. Can be moved between
When the seat portion 3 and the back portion 4 are combined and extend horizontally, the elbow portion 5 and the support column 6 also extend horizontally and become extremely thin, and when the movable viewing seat is moved to the shelf-shaped storage position, The chairs 1 can be sufficiently accommodated between the steps of the floor base 10.

By the way, as shown in FIG. 4, the memo table storage device of this embodiment provided on the chair 1
A memo support arm 15 serving as a memo support member, which is rotatably connected to the upper end of the support 6 by the shaft 7 around a first axis A extending in the left-right direction of the chair.
As a memo table attachment member rotatably connected to the memo table support arm 15 via two pins 16 around a second axis B intersecting at right angles to the first axis A. Outline L
A memo pad mounting bracket 17 having a character shape, a substantially L-shaped memo table 18 which is fixed on the memo table mounting bracket 17 and is slightly larger than the memo table mounting bracket 17, and a lower pin 16 in FIG. Is disposed on the second axis B in the vicinity, and constantly urges the memo table mounting bracket 17 to rotate around the second axis B so that the memo table 18 extends in the left-right direction of the chair 1. A torsion spring 19 as an elastic member and a memo table mounting bracket 17 fixed to the front surface of the connecting pipe 2 and located on the back side of the memo table 18 are attracted, so that the memo table 18 is positioned at the center in FIG. A permanent magnet 20 shown in the chair 1 and held in a storage position extending in the left-right direction of the chair 1 in front of the column 6 and below the seat 3, which is also fixed to the front surface of the connecting pipe 2 and has a memo table 18. A rubber stopper 21 that abuts against the back surface of the Eteiru.

Further, as shown in FIGS. 1 to 4, the memo table storage device of this embodiment engages with the memo table 18 located in the vicinity of the storage position and rotates around the second axis B of the memo table 18. A memo table stopper 22 serving as a memo table hooking means is fixed to the upper front surface of the column 6 to allow the memo table 18 to rotate around the first axis A while allowing the memo table to rotate. Here, the memo stand stopper 22 has a plate shape bent into an L-shape, and its upper portion 22a projects substantially horizontally forward from the upper front surface of the column 6, thereby. When the memo table 18 rotates around the second axis B from near the storage position, the memo table 18 does not come into contact with the memo table 18. However, when the memo table 18 tries to rotate about the first axis A from near the storage position, The upper part 22a is in contact with the end face 18a of the memo table 18 which is located upward near the storage position. And the first of the note table 18
About the axis A.

As shown in FIG. 4, an end portion 22b of the upper portion 22a of the memo stand stopper 22 farther from the seat 3 is provided.
Are bent slightly upward. This is because when the memo table 18 is rotated around the second axis B toward the storage position, the memo table 18 and the memo table are mounted until the longitudinal direction of the column 6 is parallel to the second axis B. Even when the memo table support arm 15 together with the bracket 17 is not fully rotated forward around the first axis A, the upper portion 22a and the memo table 18 can be brought into contact with each other by leaving the end 22b upward. This is because the memo table 18 can be smoothly moved to the storage position by avoiding it.

In the memo table storage device of this embodiment, when the memo table 18 is used, the occupant of the chair 1 first moves the memo table 18 held in the storage position by the permanent magnet 20 to the storage position. The memo table mounting bracket 17 is rotated around the second axis B while the memo table mounting bracket 17 is rotated against the urging force of the torsion spring 19, and then the memo table 18 is extended forward. When the memo table support arm 15 is rotated about the first axis A together with the memo table 18 and the memo table mounting bracket 17 until the upper surface of the portion 5 is parallel to the second axis B, the torsion spring 19 rotates the memo table mounting bracket 17 around the second axis B by the urging force, and
The chair 1 is placed on the upper surface of the elbow 5 and extends in the left-right direction of the chair 1. When the memo table 18 is not used, the occupant first mounts the memo table mounting bracket against the torsion spring 19.
The memo pad 18 stands upright while rotating the rotator 17 around the second axis B, and then the memo pad until the longitudinal direction of the column 6 extending substantially vertically and the second axis B become parallel. Note table support arm 15 with 18 and note table mounting bracket 17
When the memo table 18 is lowered to the front of the support column 6 by rotating the memo table 18 forward about the first axis A, the torsion spring 19 causes the memo table mounting bracket 17 to move the memo table mounting bracket 17 by the urging force. Rotate it around to place the memo table 18 in the storage position, and the permanent magnet 20 holds the memo table 18 in its storage position by attracting the memo table mounting bracket 17 located on the back side of the memo table 18. I do. Even if the memo table 18 cannot be fully rotated to the storage position, the memo table rotation stopper 22 is engaged with the memo table 18 near the storage position at its upper portion 22a, and the memo table 18 is moved to the use position. The rotation of the memo table 18 around the first axis A is prevented while the memo table 18 is allowed to rotate around the second axis B for the second movement to the second position.

Therefore, according to the memo table storage device for a chair of this embodiment, when the memo table 18 is used, the memo table 18 is
Can be deployed to the use position extending in the left-right direction of the chair 1 on the upper surface of the chair 1. When the memo stand 18 is not used, the memo stand 18 is lowered to the front of the support 6 and the chair 1 can be held at the storage position extending in the left-right direction, and even if the memo table 18 cannot be fully rotated to the storage position, the memo table rotation stopper 22 is located near the storage position. The chair 1 is hung on the memo stand 18 to be positioned and stops the rotation of the memo stand 18 around the first axis A, so that the chair 1 can be moved to the shelf-like storage position. 1
When the chair 1 is tilted forward as shown in the middle right, the memo table 18 can be prevented from rotating around the first axis A by its own weight and coming out of the chair 1 as the chair 1 falls forward. And notepad
It is possible to reliably prevent the 18 and the chair 1 from being damaged.

Further, according to the memo table storage device for a chair of this embodiment, the memo table is projected from the vicinity of the storage position to the first position from the vicinity of the storage position as the memo table latching means is projected forward on the upper portion of the column 6. When the user tries to rotate around the axis A,
Since the memo stand rotation stopper 22 is provided so as to be in contact with the memo stand 18a, the memo stand 18 is engaged with the memo stand 18 located in the vicinity of the storage position in a simple configuration, and the memo stand 18 rotates around the first axis A. Movement can be locked.

Although the present invention has been described with reference to the illustrated examples, the present invention is not limited to the above examples. For example, the memo table hooking means integrally forms a convex portion on the upper front side of the column 6. For example, when the upper portion 22a of the memo pad rotation stopper 22 protrudes forward for a sufficiently long time, and the memo pad engaging means reliably performs the engaging function, It is also possible to omit a permanent magnet for attracting and holding.
The memo table storage device of the present invention can be applied to any chair that can be turned upside down, even if it is not a chair for a movable spectator seat.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a memo table storage device for a chair according to the present invention, which is applied to an upside down chair for a movable spectator seat.

FIG. 2 is a front view showing the memo table storage device for a chair of the embodiment.

FIG. 3 is a plan view showing the memo table storage device for a chair of the embodiment.

FIG. 4 is an exploded perspective view showing the memo table storage device for a chair of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chair 3 Seat part 5 Elbow part 6 Prop. 15 Memo table support arm 17 Memo table mounting bracket 18 Memo table 19 Torsion spring 20 Permanent magnet 22 Memo table rotation stopper A A 1st axis B 2nd axis

Claims (2)

[Claims] 1. A first pillar (6), which stands on a side of a seat (3) of a chair (1) and supports an elbow (5) of the chair, extends in the left-right direction of the chair. A memo table support member (15) rotatably connected around the axis (A) of the memo table; and a memo table support member rotatable about a second axis (B) orthogonal to the first axis. A connected memo table mounting member (17), a memo table fixed to the memo table mounting member (18), and a memo table mounting member which is always extended so that the memo table extends in the left-right direction of the chair. And a resilient member (19) for rotationally biasing around a second axis (B), comprising: a chair memo table storage device; The memo stand (18) located near the extended storage position
Memo table hooking means () that locks the memo table around the first axis (A) while allowing the memo table to rotate about the second axis (B). 22) A memo table storage device for a chair, characterized by comprising: 2. The memo table hooking means is provided so as to protrude forward from an upper portion of the column, and when the memo table attempts to rotate around the first axis (A) from near the storage position. The storage device for a memo table for a chair according to claim 1, characterized in that it is a contact portion (22) that comes into contact with an end surface of the memo table.