JPH0928509A - Writing table device for chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chair writing table of high safety movable from a position for use to a storage position properly and in a short time via a simple operation, and not obstructing a person to stand up for an emergency escape. SOLUTION: A turning body 40 is mounted on a base body 20 with the first shaft 24 laid approximately horizontally, and a writing table support body 60 with a writing table 14 fixed thereto is mounted on the turning body 40 with the second shaft 42 laid in a direction orthogonal with the first shaft 24. Also, when the writing table support body 60 is collapsed to an approximately horizontal service position, upon the arrival of the turning body 40 at the prescribed service position, the projection 62 of the writing table support body 60 comes to be engaged with the groove 38 of the base body 20, thereby preventing the turning motion of the body 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair in which a memo pad is movably mounted in a substantially horizontal use position in front of a chair and a storage position on a side portion of the chair that does not obstruct seating. Regarding memo pad device.

[0002]

2. Description of the Related Art Conventionally, various devices of this kind have been proposed. For example, Japanese Utility Model Publication No. 47-41220,
Japanese Utility Model Publication No. 56-16122, Japanese Utility Model Publication No. 7-20899
There are some which are disclosed in Japanese Patent Application Publication No.

[0003]

However, in many conventional cases, it takes a lot of time and labor to move the memo pad from the use position to the storage position or in the opposite direction. Therefore, in the unlikely event of an earthquake or a building fire, when the occupant stands up from the chair in an emergency evacuation, the memo pad becomes an obstacle.

When moving the memo pad from the use position to the storage position, remove the hand from the memo pad as soon as possible,
I would like to use my hands for preparatory operations for leaving the seat, such as holding a coat or bag, but if I release my hand from the memo pad in the middle of putting it in the stored state, the memo pad may fluctuate or tilt. , It may not be stored properly or may hit your legs, which may interfere with your departure and delay it.

The object of the present invention is to solve the above-mentioned problems and to move the memo pad from the use position to the storage position or the opposite direction in a short time with certainty and easily, and by standing up from a chair, it is possible to perform an emergency. An object of the present invention is to provide a highly safe memo pad device for a chair that does not interfere with a person trying to evacuate.

[0006]

In order to achieve the above object, the present invention employs the following means. (1) In a memo pad device for a chair, which is mounted so as to be movable between a use position which is substantially horizontal in front of the chair and a storage position which is stored in a side portion of the chair, the memo pad is provided in a position on a side portion of the chair. A fixed base body, a rotary body pivotally attached to the base body with a substantially horizontal first shaft directed in the left-right direction, and rotatable about a predetermined use position and a non-use position, and a memo pad on the tip side. And a base end side which is pivotally attached to the rotating body with a second shaft which is orthogonal to the first axis and which is substantially parallel to a use position which is substantially perpendicular to the rotating body. A memo base support rotatable to a position, a memo base and a base provided between the memo base support and the base, the rotary body being in a use position with respect to the base, and the memo base and the memo base support being a rotary body. When they reach the use position with respect to each other, they engage with each other and block the rotation of the rotating body. And, and by Haneageru notes stand to the standing position, disengaged from each other, provided with rotation stopping means adapted to permit rotation of the rotating body.

(2) In the above item (1), the rotating means is
It has a function of preventing the memo pad support from rotating in the direction of the use position when the rotary body is disengaged from the use position.

(3) In the above item (1) or (2), the rotation stopping means has a protrusion protruding from the base end of the memo pad support,
A groove is provided in the base body so as to engage with the protrusion by rotating the memo pad support body to the use position with respect to the rotating body.

(4) In the above item (3), when the rotating body is disengaged from the use position, the protrusion is in sliding contact with the side surface of the base body to prevent the memo pad support from rotating in the use position direction. To do so.

(5) In the above item (3) or (4), each of the plurality of protrusions and grooves is comb-shaped.

(6) In any one of the above items (1) to (5), a protrusion is provided on one of the facing surfaces of the base body and the rotating body, and the first shaft is centered on the other facing surface. The arcuate groove having the arcuate shape is formed, and the arcuate groove into which the protrusion fits is provided, and the rotation range of the rotating body is restricted by the engagement of the protrusion and the arcuate groove.

(7) In the above item (6), a compression spring for urging the rotating body toward the use position is contracted between the protrusion and one end surface of the arcuate groove.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. This embodiment is an example in which the present invention is applied to a triple type connecting chair. 1 to 3, (2) and (2) are two legs on the left and right, and 3
The single chairs (4) are connected and placed. Each single chair
(4) has a rotatable seat (6) and a backrest (8), and has an elbow body (10) on both sides of the seat (6).

The memo pad device (12) of the present invention is attached to one elbow (10) (in this embodiment, the elbow on the right side of the seated person). The memo pad (14) of the memo pad device (12) is in a substantially horizontal use position in front of the single chair (4) (see FIGS. 6 to 8).
And a storage position (see FIG. 4) stored on the side of the single chair (4). 1 to 3 show three states of the memo pad (14) of the memo pad device (12).

One of the states is a stored state (stored position), and the memo pad (14A) has an elbow body as shown by a dotted line in FIG.
Suspended from the chair (4), below the side of the chair (4) (in the figure, elbow (10)
And the seat (6)).

The second is a state in which the memo pad (14) is rotated to the front position of the chair (4) and lifted up, and the memo pad (14) stands in its rotational direction (( 14B)). It is an intermediate state where it shifts to a use state.

The third is the use state shown by dotted lines in FIGS. 2 and 3, and the memo pad (14C) is an intermediate state in which the memo pad (14B) standing at the front position of the chair (4) is used. It is rotated inwardly of (4) and tilted down to be substantially horizontal so that a memo paper or the like can be placed.

The structure of the memo pad device 12 will be described in detail with reference to FIGS. (20) is a rectangular plate-shaped base body, such as a chair elbow (10) or leg (2),
It serves as a base for fixing the memo pad device (12) to a seat (6) or a stay (not shown) extended from the backrest (8) to the side of the chair. In this embodiment, the base body (20) is fixed to the upper part of the inner surface of the elbow body (10) on the right side of the seated person by a plurality of bolts or machine screws (22).

Reference numeral (40) is a plate-like rotating body, and is a base body (20).
It is rotatably and pivotally mounted so as to almost overlap the base body (20) by a substantially horizontal first shaft (24) which is press-fitted and fixed in the central portion of the base body and which is directed in the left-right direction.

Reference numeral (60) denotes a memo pad support, which is a rotating body (4
(0) is in the rotating vertical plane, the memo pad (14) is fixed to the tip side with screws, and the base end side is the rotating body (40).
And the second shaft (42) that is oriented almost at right angles to the first shaft (24).
It is pivotally attached to the rotating body (40) and can rotate to a standing position (FIGS. 9 and 10) that is substantially parallel to or flush with a use position (see FIGS. 6 to 8) that is substantially perpendicular to the rotation body (40). Is. The memo pad support body (60) and the memo pad (14) are integrally formed into a plate shape.

The relationship between these parts will be described in more detail. On the inner surface of the base body (20), a circular recess (26) concentric with the first shaft (24) fixed to the center thereof.
Is provided, and the ball bearing (28) fitted to the first shaft (24) is fitted therein. Furthermore, on the first axis (24),
Revolving body (40) and recess formed on the side surface of the revolving body (42)
The ball bearings (28) housed in the (44) are fitted together in an overlapping manner, and are retained by the first shaft (24) by the pressing plate (30) and the flat head screw (32). In this way, the rotating body (40) is sandwiched by the two ball bearings (28) and (28), and the load in the direction of the first axis (24) when tilting is increased by the two ball bearings (2).
8) It is received by (28) and can rotate smoothly with respect to the first shaft (24).

On the surface of the base body (20) on the inside of the chair (on the side of the rotating body (40)), an arcuate groove (34) centered on the first shaft (24) is provided outside the circular hole-shaped recess (26). Are formed. On the other hand, the rotating body
A prism-shaped protrusion (46) is provided on the surface of the substrate (40) on the base body (20) side. The protrusion (46) is fitted in the arcuate groove (34) of the base body (20), and the arcuate groove (34) is rotated as the rotating body (40) is rotated.
It slides inside. In addition, a coil spring (36), which is a compression spring, is installed in the circular groove (34).
It is contracted between the rear end face of (34) and the protrusion (46).
These arcuate grooves (34), protrusions (46), coil springs (3
6) etc., the first rotation restricting means for restricting the range of rotation of the rotating body (40) between the predetermined use position (FIGS. 5 to 9) and the non-use position (FIG. 4) is provided. Has been formed.

When the rotating body (40) reaches the use position where it is fully rotated clockwise as viewed from the inside of the chair, the rotating body (40)
The memo pad (14) that rotates with the (40) rises and reaches the position in front of the chair, and from that state, the memo pad support (60) can be brought into the use state by tilting it inside the chair. Of. On the contrary, when the rotating body (40) rotates counterclockwise when viewed from the inside of the chair, the memo pad (14) and the memo pad support (60).
Stably hangs down due to its weight, and becomes the stored state of (14A) in FIG. 3, and the elbow body (10) and the seat on the lower side of the chair (4)
It will be stored between (6). At this time, the coil spring (36) acts as a cushioning material against the fall of the memo pad (14).

On the upper part of the surface of the base body (20) on the side of the rotating body (40), there are provided three engaging grooves (38) facing in the up-down direction and arranged in the front-rear direction in a comb-like shape. There is. On the other hand, the memo pad support (60) has three projections (62) arranged in the front-rear direction on the end surface on the base end side. The protrusion (62) is a base
It is sandwiched between the surface of the (20) on the rotating body (40) side and the side surface (50) of the stopper (48) provided on the rotating body (40) with a slight gap. In addition, the three locking grooves (3
8) and the three protrusions (62) of the memo base support (60) are the rotating body (4
(0) is in the use position, the memo pad support (60)
When they are rotated to the use position, they are engaged with each other.

Due to the presence of the groove (38), the memo pad support (60) can be tilted inside the chair only when the rotating body (40) is in the use position. Also, memo table support (60)
When the rotating body (40) comes out of the use position, the projection (62)
By sliding on the side surface of the base body (20), it cannot be tilted toward the use position.

Further, the groove (38) of the base (20) and the memo pad support (6
By engaging with the protrusion (62) of (0), the rotation of the rotating body (40) with respect to the base body (20) is locked. For this reason, the memo pad (14) can stably maintain the state of the use position. The end face (52) of the stopper (48) serves as a stopper when the memo pad support (60) is tilted toward the inside of the chair and is in the use position, and the memo pad support (60) is falling. By receiving the inside surface of the chair at the base end of the
0) is kept almost horizontal.

The protrusion (62) of the memo pad support (60), the surface of the base body (20) on the side of the rotating body (40) and the groove (38), and the stopper (4) of the rotating body (40).
By 8), the second rotation restricting means for restricting the range of rotation of the memo pad support body (60) and the time when it can be rotated is formed. Further, the protrusion (62) of the memo pad support (60) and the base body (20)
The groove (38) forms a rotation stopping means for preventing the rotation of the rotating body (40).

(54) is a hole (5
The coil spring (58) inserted in (6) is a steel ball, which constitutes a moderation mechanism, and the steel ball (58) is formed in the recess provided on the end face of the memo base support (60) on the base end side. ) Is pressed to maintain the standing position of the memo pad support body (60) and the memo pad (14) with respect to the rotating body (40) in a stable manner. This is the protrusion (62) of the memo pad support (60) which constitutes the second rotation restricting means.
And the surface of the base body (20) on both sides of the rotating body (40) and the rotating body (4
Since there is a gap between the side surface (50) of the stopper (48) of (0), the memo pad support (60) and the memo pad (14) are rotatable (40).
Since it wobbles with respect to the rotating surface of, the wobbling is suppressed.

The memo pad device of the embodiment configured as described above
The operation of (12) will be described. When not in use, the memo pad (14)
As shown in FIGS. 3 and 4, the lower side of the chair (4) hangs down from the elbow body (10) and the base body (20) in a standing position with respect to the rotating body (40). It is stored in the storage position between the elbow body (10) and the seat (6).

In order to bring the memo pad (14) into the used state from the stored state, the seated person manually lifts the memo pad (14) upward and moves the rotating body (40) to the first position which is the use position. It is rotated up to the regulation upper limit of the rotation regulating means (FIGS. 3 and 5). Next, at this position, when the memo pad (14) is rotated so as to be tilted toward the inside of the chair, the memo pad (14) is released by the action of the second rotation restricting means and the rotating body rotation stopping means. However, the memo pad (14) is stably held in a substantially horizontal use position. This is a memo pad (1
It is the usage state of 4) (Figs. 1, 2, 6, 7, and 8).

To change the memo pad (14) from the use state to the unused storage state, the memo pad (14) in the use position is simply flipped up by hand. That is, when the memo pad (14) is flipped up to the upright position, the memo pad (14) is held at the upright position with respect to the rotating body (40) by the action of the second rotation restricting means, and at the same time, the protrusion is formed. (62) will come out of the groove (38),
The memo pad (14) and the memo pad support body (60) pivot downward together with the pivot body (40) due to their own weights, and immediately reach the storage position. In this case, the memo pad (14) descends without swaying by the action of the second rotation restricting means and the moderation mechanism, and the elbow body (10) and the seat (6) on the lower side of the chair (4). ) Is securely stored in a narrow space.

At this time, since the memo pad (14) does not sway, it does not hit the legs of the seated person or the seated person next to the connecting chair or the entrance of the storage place. What is important is that it is not necessary to hold the memo pad (14) by hand until it is stored. Further, even if the hand is released or pushed, since the first rotation restricting means has the cushioning spring in the arcuate groove portion, the device is not damaged and no impact noise is generated.

When an occupant tries to stand up from a chair in an emergency evacuation due to an earthquake or a fire in a building, he / she only has to flip up the memo pad so that he / she should keep his hand on the coat or bag. It can be used for preparatory operations for the seat and can leave the seat quickly.

[0034]

According to the present invention, since it is configured as described above, it has the following effects. (1) Since the rotation of the rotating body can be blocked or released only by rotating the memo pad with respect to the rotating body to the use position or the standing position, it is necessary to separately provide a locking means for the rotating body. And there is no need to perform that operation individually.
As a result, the memo pad can be moved from the use position to the storage position reliably and quickly with a simple operation of flipping up the memo pad, which disturbs people who stand up from a chair and evacuate in an emergency. Realize a memo pad device on a chair with high safety. In addition, since the attachment of the device is completed only by fixing the base body to the elbow body and the like, and there is no need to process a stopper or the like on the elbow body or the like, there is a cohesiveness as a memo pad device, and various elbow bodies, etc. Easy to install (Claim 1 and all other items).

(2) According to the second aspect of the invention, the rotating means has a function of preventing the memo pad support body from rotating in the direction of the use position due to the rotation body coming out of the use position. If the rotating body moves away from the use position,
Since the memo pad support is constrained to the standing position and does not inadvertently pivot to the use position, the pivot body and memo pad can be smoothly and reliably moved to the storage position.

(3) According to the third aspect of the present invention, the rotation stopping means has a protrusion protruding from the base end of the memo pad support and the memo pad support to the use position with respect to the pivot body. If it is provided with a groove provided in the base body so as to engage with the projection by rotating, the above structure is simple.
The effect of (1) can be obtained, and the manufacturing and processing are easy.

(4) When the rotating body is disengaged from the use position, the protrusion slides on the side surface of the base so that the memo pad support rotates in the use position direction. By preventing the above, the effect of the above (2) can be achieved with a simple structure.

(5) When the plurality of protrusions and the plurality of grooves are respectively formed in the shape of a comb as in the invention described in claim 5, the rotation stopping force of the rotating body and the strength of the rotation stopping means can be increased. In addition, even if one protrusion is lost, the rotation of the rotating body can be prevented by the engagement of the other protrusion and the groove, which is safe and good appearance. it can.

(6) According to a sixth aspect of the invention, a protrusion is provided on one of the facing surfaces of the base body and the rotating body, and the other facing surface has an arc shape centered on the first axis. When the arcuate groove into which the protrusion is fitted is provided and the rotation range of the rotating body is regulated by the engagement between the protrusion and the arcuate groove, the width of the entire device in the left-right direction is reduced. It can be made thin, and can be prevented from disturbing the seated person during storage.

(7) When the compression spring for urging the rotating body toward the use position is contracted between the protrusion and the one end surface of the arcuate groove as in the invention described in claim 7, the memo is obtained. Even if the table or the like is dropped from the standing position to the storage position by its own weight, the memo pad or the like is not damaged or a large impact sound is not generated due to the buffering action of the compression spring.

[Brief description of drawings]

FIG. 1 is a front view of a triple chair provided with an embodiment of a memo pad apparatus of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is also a side view showing a state where the memo pad is flipped up by a solid line and a state where the memo pad is in a storage position by a dotted line.

FIG. 4 is an enlarged side view when the memo pad is in the storage position.

FIG. 5 is an enlarged side view showing a state in which the rotating body is also rotated to the use position and the memo pad is in the standing position.

FIG. 6 is an enlarged side view when the memo pad is also in a use position.

FIG. 7 is an enlarged plan view when the memo pad is in the use position.

FIG. 8 is an enlarged rear view when the memo pad is also in a use position.

9 is an enlarged side view of the main part of FIG.

10 is a cross-sectional view taken along the line AA in FIG.

[Explanation of symbols]

 (6) seat (8) backrest (10) elbow body (12) memo pad device (14) memo pad (20) base (24) first shaft (34) arcuate groove of base (36) buffer spring ( 38) Groove (40) Rotating body (42) Second shaft (46) Projector (48) Rotating body stopper (52) End surface of rotating body stopper (60) Memo base support (62) Projection

Claims (7)

[Claims] 1. A memo pad device for a chair, wherein the memo pad is mounted so as to be movable between a use position which is substantially horizontal in front of the chair and a storage position which is housed in a side part of the chair. A base body fixed in a position, a rotating body pivotally attached to the base body with a substantially horizontal first shaft directed in the left-right direction, and rotatable about a predetermined use position and a non-use position, A memo pad is fixed, and the base end side is pivotally attached to the rotating body with a second shaft that is orthogonal to the first axis, and is substantially parallel to the use position that is substantially perpendicular to the rotating body. It is provided between the memo base support that is rotatable to the standing position and the memo base support and the base, the rotary body is in the use position with respect to the base, and the memo base and the memo base support are Rotate by engaging with each other by reaching the use position with respect to the rotating body And a rotation stopping means adapted to allow the rotation of the rotating body by separating the two from each other by preventing the rotation of the rotating body and flipping the memo pad up to the standing position. Memo stand device. 2. The rotating means has a function of preventing the memo pad support body from rotating in the direction of the use position when the rotation body is disengaged from the use position. A memo pad device for the chair described. 3. A rotation stopping means engages with a protrusion provided at a base end of the memo pad support, and the protrusion by pivoting the memo pad support to a use position with respect to the pivot member. 3. The chair memo pad device according to claim 1, further comprising a groove provided in the base body so as to fit together. 4. The method according to claim 3, wherein when the rotating body is disengaged from the use position, the protrusion slides on the side surface of the base to prevent the memo pad support from rotating in the use position direction. Chair memo pad device. 5. The chair memo pad device according to claim 3, wherein each of the plurality of protrusions and the plurality of grooves has a comb-like shape. 6. A circle in which a protrusion is provided on one of the facing surfaces of the base body and the rotating body, and the other facing surface has an arc shape centered on the first axis, and the protrusion is fitted to the circle. Provide an arcuate groove,
The chair memo pad device according to any one of claims 1 to 5, wherein the rotation range of the rotating body is regulated by the engagement between the protrusion and the arcuate groove. 7. Between the protrusion and one end face of the arcuate groove,
7. The memo pad device for a chair according to claim 6, wherein a compression spring for urging the rotating body toward the use position is contracted.