JPH08182577A - Mounting device for accessory for chair - Google Patents

Abstract

PURPOSE: To support a memo table, etc., by easily performing loading/unloading work and without generating backlash and to improve the rigidity of a mounting part. CONSTITUTION: Plural brackets 7, 7 are provided vertically in line on a memo table frame 4 which supports the memo table, and hinges 25 enabling to disassemble are constituted by hanging the brackets 7, 7 on brackets 6, 6 on a chair frame 2 side with connecting pins 6a, 6b. The brackets 7, 7 are brought into contact with the memo table frame 4 so as to be wound across the chair frame 2 by slewing the frame 4 centering about the connecting pins 6a, 6b, and moreover, the memo table frame 4 is connected to the chair frame 2 with a connecting means 16 in the state in which it is brought into contact with the chair frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching accessories such as a memo pad and an armrest to a chair. More specifically, the present invention relates to a mounting device for mounting accessories such as a memo pad and an armrest so as to be detachable with one touch.

[0002]

2. Description of the Related Art Conventionally, to attach accessories such as a memo pad and an armrest to a chair, a frame of the accessory (called a chair frame) is welded or riveted to a frame of the chair (called a chair frame). It is common to fix it completely or attach it detachably by screwing as described in Japanese Utility Model Publication No. 55-2821. In addition, there is a frame such as a memo pad which is provided with an elastic locking piece so that it can be easily attached to and detached from a chair (Jitsuko Sho 55-14).
72).

[0003]

However, when fixing the accessory frame to the chair frame by welding or the like, it is possible to increase the mounting rigidity, but on the other hand, it becomes impossible to remove the accessory. Become. For this reason, there is a problem that it becomes an obstacle when accessories such as a memo pad are not used or when chairs are folded or stacked to be tied up.

Further, when the accessory is detachably attached by a method such as screwing, the accessory itself can be attached and detached, but a tool such as a screwdriver is required, and there is a disadvantage that the attachment and detachment work takes time. . Moreover, there is a risk that the screws will be lost when accessories such as a memo pad and armrests are removed, and the management thereof will be troublesome.

Further, in the case of the one which can be easily attached and detached like Japanese Utility Model Publication No. 55-1472, there is no problem such as hindering when the chair is tied up, but the elastic portion is not bent when the memo pad or armrest is used. Or, a clearance in design is required for attachment / detachment, and rattling easily occurs. In addition, since the rigidity of the mounting portion becomes small, it becomes easy for the memo pad to be detached or broken when a large force is applied to it.

The present invention provides a device for attaching a chair accessory, which can easily remove and attach accessories with one touch and can support without rattling. The purpose is to do.

[0007]

In order to achieve the above object, the present invention is a device for removably attaching accessories such as a memo pad and an armrest to a chair, wherein each of the chair frame and the accessory frame is attached. A bracket that protrudes in the radial direction is provided, and the brackets are detachably connected by connecting pins parallel to each frame to support the accessory frame so that it can pivot about the connecting pin, while rotating the accessory frame. And a connecting means for connecting the accessory frame and the chair frame in a state of being abutted so as to be wound around the chair frame.

In the apparatus for mounting a chair accessory of the present invention, a plurality of brackets are provided vertically at the mounting portions of the chair frame legs and the accessory frame arranged in parallel with each other. The bracket on the side of the accessory frame is overlapped on the bracket on the side, and the connecting pin provided on one of the brackets is hooked on the mating bracket to be horizontally pivotally connected.

In the attachment device for a chair accessory of the present invention, the accessory frame is provided with a connecting plate which projects in a direction substantially opposite to the bracket of the frame and surrounds the chair frame between the bracket and the bracket. The chair frame and the accessory frame are connected by the connecting means via the connecting plate.

Further, in the chair accessory attaching device of the present invention, the connecting plate is provided at a position between the plurality of brackets of the accessory frame.

[0011]

[Operation] Therefore, when attaching accessories such as a memo pad to a chair, after connecting the bracket on the accessory frame side to the bracket on the chair frame side through the connecting pin, the accessory frame is centered around this connecting pin. If you swivel the side, the bracket and accessory frame will wrap around the chair frame and will fit tightly together. Therefore, if the accessory frame and the chair frame are connected by the connecting means, the accessory frame is fixed to the chair frame without rattling. Also, to remove the accessory, if you disconnect the connecting means and rotate the accessory frame in the opposite direction to the installation, the bracket on the accessory frame side that surrounded the chair frame will be released and the chair frame will be removed. release.
Therefore, if the bracket of the accessory frame and the bracket of the chair frame are disconnected by moving the accessory frame, the accessory is removed from the chair.

According to the second aspect of the invention, the accessory frame can be horizontally swiveled by simply placing the bracket on the accessory frame side over the bracket on the chair frame side and hooking the connecting pin. The brackets of the accessory frame and the chair frame are released from each other by lifting the accessory frame.

According to the third aspect of the present invention, the chair frame is surrounded by the bracket and the connecting plate which project from the accessory frame in opposite directions. Therefore, when the accessory frame pivots around the connecting pin, the accessory frame comes into contact with the chair frame so as to wind around the chair frame, and the chair frame is surrounded and fixed so as to bite between the bracket and the connecting plate.

Further, in the case of the invention of claim 4, since the accessory frame wound around the chair frame is fastened to the chair frame by pulling the connecting plate between the brackets, the rattling of the accessory frame is caused. It has less flicker and tilt.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 to 4 show an embodiment in which the present invention is applied to an attachment device for a memo pad for a chair. Mounting device 5 of this embodiment
As shown in FIG. 1, the frame 4 of the memo pad 3, which is an accessory, is detachably attached to the leg portion of the frame 2 of the chair 1. The mounting position of the memo pad 3 or other accessories is not limited to this position, and the mounting position and orientation of the back support frame, leg lateral frame, etc. are selected as necessary.

As shown in FIG. 2, this memo pad mounting device 5 includes two sets of disassembleable hinges 25, 25 including a chair frame 2 and a memo pad frame (accessory frame) 4 and a pair of connecting means 16. It consists of and. The decomposable hinges 25, 25 are chair frame side brackets fixed to the chair frame 2 (hereinafter referred to as chair side brackets) 6.
And a bracket 7 on the memo pad frame side (hereinafter referred to as a memo pad bracket) fixed to the memo pad frame 4 facing the chair bracket 6 and a connecting pin 6a and a hole 7a for detachably connecting these brackets. Composed by and
The chair frames 2 and 4 are arranged vertically side by side. The connecting pin 6a may be provided on any bracket side.

The chair side bracket 6 is fixed to the leg portion of the chair frame 2 so as to protrude substantially horizontally, for example, by welding or the like, and has sufficient mechanical strength to support the load applied to the memo pad 3. ing. On the upper surface of the chair side bracket 6, a connecting pin 6a protruding upward is integrally formed. On the other hand, the memo pad side bracket 7 is fixed to the attachment position of the memo pad frame 4 so as to protrude substantially horizontally by, for example, welding. A hole 7a into which the connecting pin 6a is rotatably fitted is provided at a position corresponding to the connecting pin 6a at the tip of the memo pad bracket 7. By fitting the hole 7a into the connecting pin 6a of the chair side bracket 6, the memo pad side bracket 7 can be hooked on the chair side bracket 6. The bracket 7 on the memo pad side is supported by the chair side bracket 6 so as to be horizontally rotatable around the connecting pin 6a. Here, at least the inner surface of the memo pad bracket 7 that abuts the chair frame 2 is between the chair frame 2 and the chair frame 2 when the memo pad frame 4 is swung around the connecting pin 6a. It has a curved shape that does not form a space for pinching fingers or the like and is in close contact with the chair frame 2 in the widest possible range.

In the case of this embodiment, the connecting means 16 are arranged vertically as shown in FIG.
It is installed between 5 and 25. This connecting means 16 is
In the case of this embodiment, the lock mechanism 8 is attached to the chair frame 2 and the connecting plate 9 is fixed to the memo pad frame 4. As shown in FIG. 3, the lock mechanism 8 includes a case 10 that is attached downward to the chair frame 2, a lock pin 11 that vertically penetrates the case 10, and a lock pin 11 that is housed in the case 10 to keep the lock pin 11 at all times. Coil spring 1 pressed downward
2 and a lever 13 used as a knob for lifting the lock pin 11. The case 10 is fixed to the leg portion of the chair frame 2 by using the bracket 26. Also, at the upper end of the lock pin 11, the lever 1
3 is attached by tightening with a cap nut 14. The lever 13 also serves as a retainer for the lock pin 11. Therefore, when the lever 13 is pulled up, the lock pin 11 is pulled up against the spring force of the coil spring 12. Then, from this state, the lever 1
3 is released, the lock pin 11 re-engages the coil spring 1
It moves forward by the spring force of 2, and its lower end projects from the case 10. Also, the lock pin 11 compresses the coil spring 12 and moves up even when an upward force is applied to the tip of the lock pin 11. Reference numeral 15 in the drawing is a spring washer.

The connecting plate 9 has such a length that when the bracket 7 is turned and brought into contact with the chair frame 2, the tip end portion of the connecting plate 9 is arranged below the lock pin 11. The connecting plate 9 has a slope portion 9b that is bent obliquely downward at the tip portion. The slope portion 9b pushes up the lock pin 11 of the lock mechanism 8 when the connecting plate 9 moves below the spring mechanism 8. Further, at a position adjacent to the slope portion 9b of the connecting plate 9, a hole 9a into which the lock pin 11 of the lock mechanism 8 is inserted.
Is provided. Therefore, when the connecting plate 9 enters under the lock mechanism 8, the lock pin 11 is automatically pushed up by the slope portion 9b and then the lock pin 1 is inserted into the hole 9a.
Inset 1. The connecting plate 9 is fixed to the memo pad frame 4 by welding or the like so as to project substantially horizontally. Further, the connecting plate 9 is provided on the chair frame 2 when the memo pad frame 4 is attached to the chair frame 2.
It is preferable to have a curved shape as shown in FIG. 2 in order not to form a gap for sandwiching a finger or the like between them and to be in close contact with the frame 2 in as wide a range as possible. Here, the connecting plate 9 is curved in the direction opposite to the bracket 7 on the memo pad side, and the connecting plate 9 and the bracket 7 on the memo pad side are substantially U-shaped when viewed from above as shown in FIG. ing. Therefore, the memo pad frame 4 is connected to the connecting pin 6a.
When it is swung around the chair frame 2 and wrapped around the chair frame 2,
The chair frame 2 is pressed between the upper and lower memo pad side brackets 7, 7 against the brackets 7, 7 by a connecting plate 9 to hold them.

Next, based on FIG. 4, the chair 1 and the memo pad 3 are attached.
The case of attaching will be described.

First, the memo pad side brackets 7, 7 are hooked on the connecting pins 6a, 6a of the chair side brackets 6, 6 to assemble the decomposable hinges 25, 25, and then the memo pad is centered around the connecting pin 6a. Frame 4 with arrow C in the figure
It is horizontally swung in the CW direction, and the tip of the connecting plate 9 is moved below the lock mechanism 8 fixed to the chair frame 2. At this time, the bracket 7, the memo pad frame 4, the connecting plate 9, and the chair frame 2 are wound around and abut. On the other hand, the connecting plate 9 advances in the direction of the arrow CCW while pushing up the lock pin 11 of the lock mechanism 8 with the slope portion 9b when it enters under the lock mechanism 8. Then, when the tightening position on the memo pad frame 4 side, for example, the inner surface of the bracket 7 and the connecting plate 9 hits the chair frame 2, the lock pin 11 enters the hole 9 a of the connecting plate 9, and the chair frame 2 is inserted through the connecting plate 9. And the memo pad frame 4 are connected. As a result, in this state, the chair frame 2 bites between the memo pad bracket 7 and the connecting plate 9. Therefore, the memo pad frame 4 and the chair frame 2 are integrated without rattling, and the memo pad 3 is firmly attached to the chair 1. The load applied to the memo pad 3 is supported by the chair frame 2 via the brackets 7 and 6 that form the two sets of hinges 25 and 25. Further, when an upward force is applied to the memo pad 3, the connecting plate 9 contacts the lower surface of the case 10 of the lock mechanism 8, and the bracket 7 is connected to the connecting pin 6.
It prevents the a from coming off and prevents the memo pad 3 from being pulled out from the chair 1.

On the other hand, when removing the memo pad 3 from the chair 1, the lever 13 of the lock mechanism 8 is pulled up and the lock pin 11 is pulled out from the hole 9a of the connecting plate 9.
As a result, the memo base frame 4 can be horizontally swung in the opposite direction, that is, in the CW direction, and the connecting plate 9, the memo base frame 4, and the bracket 7 are opened to be unwound from the chair frame 2. Then, by lifting the memo pad frame 4, the connecting pin 6 a of the bracket 6 of the chair frame 2 removes the bracket 7 and the memo pad 3 is removed from the chair 1.

Reference numeral 23 in the drawing denotes a seat portion 24 of the chair 1.
It is a horizontal frame that supports the. Most of the memo pad attachment device 5 is preferably arranged so as to be hidden under the seat portion 24 and the frame 23 of the chair 1 for aesthetic and safety reasons.

FIG. 5 shows another embodiment of the memo pad attachment device. The memo pad attachment device 5 of this embodiment has hinges 25, 25 that can be disassembled with a connecting means 16 that hooks and connects a pin.
And are arranged side by side vertically.
The decomposable hinges 25, 25 have substantially the same structure as the hinge of the mounting device 5 shown in FIG. 2, and a detailed description thereof will be omitted.

In the case of this embodiment, one bracket of the chair frame 2, for example, the upper bracket 17 is a connecting pin 17.
A concave portion 17b is provided in addition to a and constitutes a part of the connecting means 16. Further, the bracket of the memo pad frame 4 which constitutes the hinge 25 that can be disassembled with the bracket 17 fixed to the chair frame 2 also serves as a connecting plate.
The bracket 18 is shaped like a letter.

The U-shaped plate 18 is used for the memo pad frame 4
It is fixed so as to protrude substantially horizontally by, for example, welding. The bracket portion 18 of this U-shaped plate 18
At least the inner surfaces of the a and the connecting plate portion 18c that come into contact with the chair frame 2 do not form a space for pinching a finger or the like when the memo pad frame 4 is attached to the chair frame 2 and are as wide as possible. In frame 2
It has a curved shape that adheres to the. A hole 18b is provided near the tip of the bracket portion 18a. This hole 18b is connected to the connecting pin 1 of the chair side bracket 17.
The bracket portion 18a can be hooked on the chair-side bracket 17 by fitting the bracket portion 18a on the chair-side bracket 17. The bracket portion 18a can be horizontally rotated about the connecting pin 17a while being hooked on the chair side bracket 17.

On the other hand, the connecting plate portion 18c of the U-shaped bracket 18 projects and curves in the opposite direction to the bracket portion 18a, and when the memo pad frame 4 is horizontally swiveled and attached to the chair frame 2, FIG. As shown in FIG. 3, the chair frame 2 is held so as to bite into the other portion between the bracket portion 18a and the connecting plate portion 18c.

Further, at the tip of the connecting plate portion 18c,
A rotatable channel-shaped hook member 19 is attached. The hook member 19 includes a connecting plate portion 18c.
It is fixed to a shaft 20 rotatably attached to and can rotate with respect to the connecting plate portion 18c. A torsion coil spring 21 is provided around the shaft 20. One end of the torsion coil spring 21 has a connecting plate portion 1
8c and the other end is connected to the hook member 19, respectively. The torsion coil spring 21 presses the hook member 19 toward the bracket portion 18a (hereinafter referred to as the closing direction). Further, near the tip of the hook member 19,
A rotatable stopper pin 22 is attached. The stopper pin 22 penetrates the hook member 19 in the vertical direction, and when the memo pad frame 4 is attached to the chair frame 2, the stopper pin 22 gets over the end of the chair-side bracket 17 and recesses 17.
The chair side bracket 17 and the memo pad side bracket portion 18c are fixed by being fitted into b. The hook member 19 and the chair side bracket 17 connect the connecting means 1 to each other.
6 are configured. Reference numeral 19a in the drawing is a knob when the hook member 19 is rotated.

Next, the operation of attaching the memo pad 3 to the chair 1 using this memo pad attachment device will be described with reference to FIG.

In the case of this memo pad mounting apparatus, first, the memo pad frame 4 is lifted up and the bracket portion 18a of the U-shaped bracket 18 is placed on the brackets 17 and 6 of the chair frame 2 as in the embodiment of FIG. Then, the bracket 7 is hooked with the connecting pins 17a, 7a, respectively, to assemble the disassembleable hinges 25, 25. After that, the hook member 19 is opened in the direction away from the bracket portion 18a against the spring force of the torsion coil spring 21, and then the connecting pin 17 is opened.
Horizontally the memo pad frame 4 centered on a and 6a CCW in the figure
Turn in the direction. Then, the U-shaped bracket 18 and the bracket 7 are pressed so as to be wound around the chair frame 2, and then the hook member 19 is hooked in the recess 17b of the chair side bracket 17 to be fixed. The hook member 19 is rotated in the closing direction by the elastic force of the torsion coil spring 21 to fit the stopper pin 22 into the recess 17b of the chair side bracket 17. Then, the torsion coil spring 21 presses the hook member 19 in a direction in which the hook member 19 is always closed, and the stopper pin 22 causes the recess 1 to move.
7b to prevent coming off.

In this state, the chair frame 2 is in contact with the lower bracket 7 and is held so as to bite between the bracket portions 18a of the U-shaped bracket 18 and the connecting plate portion 18c. 4 is fixed to the chair frame 2 without rattling, and the memo pad 3 is firmly attached to the chair 1. The load applied to the memo pad 3 is mainly through the U-shaped bracket 18, the memo pad bracket 7, and the chair brackets 17 and 6 to the chair frame 2
Supported by. Further, since the channel-shaped hook member 19 sandwiches the chair-side bracket 17 in the vertical direction even when an upward force is applied to the memo pad 3, the bracket portion 18a and the memo pad bracket 7 are connected to the chair-side bracket 1.
It does not come off from the connecting pins 17a and 6a of 7,6,
The memo pad 3 is never pulled out from the chair 1.

When the memo pad 3 is removed from the chair 1, the knob 19a of the hook member 19 is picked and rotated in the opening direction to remove the stopper pin 22 from the recess 17b of the chair bracket 17. As a result, the memo pad frame 4 can be rotated horizontally, and like the memo pad mounting device 5 of the embodiment shown in FIG.
The bracket 7 on the memo pad side can be removed from the brackets 17 and 6 on the chair side.

The above-described embodiments are examples of preferred embodiments of the present invention, but the present invention is not limited to these and various modifications can be made without departing from the scope of the present invention. For example, in this embodiment, the chair side brackets 6, 1
7 is provided with connecting pins 6a and 17a, while the memo base bracket 7 and the bracket portion 18a of the U-shaped bracket 18 are provided.
Although the holes 7a and 18b are provided in the bracket, holes may be provided in the chair side brackets and the connecting pins may be provided in the memo pad side brackets.

In this embodiment, the memo pad frame 4 is hooked on the chair frame 2 at two upper and lower positions, but the memo pad frame 4 is set at three or more positions.
It may be configured to be hooked on.

Further, in this embodiment, the memo pad frame 4
Although the bracket 7 and the U-shaped bracket 18 on the side of the memo pad frame 4 are brought into direct contact with the chair frame 2 when attaching to the chair frame 2, these contact portions may be covered with resin or the like. When covering, it is possible to prevent noise caused by the contact between the memo pad bracket 7 and the chair frame 2 and not damage the pipe, and use elastic deformation of the covering member. Thus, the frame 4 can be more firmly brought into contact with the chair frame 2. As a method of attaching the covering member, a method of fitting a ring-shaped member to the outer peripheral surface of the chair frame 2 or a member having a U-shaped cross section on the side surfaces of the memo pad bracket 7 and the bracket portion 18a. A fitting method is preferable.

Further, in this embodiment, the memo base frame 4 is mainly used.
The main explanation was made on the case where the chair frame 2 is attached to the leg portion of the chair frame 2 and horizontally swiveled around the vertical axis. However, the invention is not particularly limited to this, and the chair frame 2 is attached to a laterally arranged portion or the like. The memo pad frame 4 may be pivoted in a vertical plane about the horizontal axis for attachment / detachment. For example, as shown in FIG. 7, a bracket 6'provided with an opening 26 is projected upward on a horizontal frame 23 that crosses the legs, and the connecting pin 7a of the bracket 7 of the memo pad frame 4 is placed on the bracket 6 '. A hinge 25 configured to be inserted and hooked is formed. Here, the connecting pin 7a penetrates between the two sets of brackets 7 and 1
It is composed of book axes. Further, the lock mechanism 8 constituting the connecting means 16 is fixed to the lateral frame 23 at a position substantially opposite to the hinge 25, for example, about 270 °. Therefore, the memo pad frame 4 includes the bracket 7,
By simply inserting the connecting pin 7a penetrating 7 into the bracket 6'of the horizontal frame 23 from the opening 26, the connecting pin 7a is pivotably supported by the horizontal frame 23. Then, since the memo pad frame 4 turns in the CCW direction in the figure by its own weight, the tip side of the connecting plate 9 moves to the lock mechanism 8 and is automatically fixed by the lock pin 11. When removing the memo pad 3,
When the lever 13 of the lock mechanism 8 is pulled forward to remove the lock pin 11, and then the memo pad frame 4 is swung slightly in the CW direction and lifted, the connecting pin 7a is disengaged from the bracket 6'of the horizontal frame 23 and the hinge 25 Is decomposed. That is, the memo pad 3 is removed from the chair 1.

Further, in each of the above-described embodiments, the connecting plate 9 protruding from the memo pad frame 4 on the opposite side of the bracket 7.
Alternatively, although the case where the connecting plate portion 18c is provided has been mainly described, the present invention is not particularly limited to this, and the connecting plate may not be provided in some cases. For example, as shown in FIG. 8, the locking mechanism 8 of the connecting means 16 may be directly fixed to the memo pad frame 4 by welding or the like, and the connecting plate 9 ′ may be attached to the chair frame 2 side.

[0039]

As is apparent from the above description, in the attachment device for a chair accessory of the present invention, the chair frame and the accessory frame are provided with brackets protruding in the radial direction, and the brackets are attached to each other. While the accessory frame is supported detachably by connecting pins in parallel with each frame to support the accessory frame so that it can be swiveled around the connecting pin, the accessory frame is swiveled and comes in contact with the chair frame so as to be wound around the chair frame. Since it has a connecting means for connecting the product frame and the chair frame, the accessory frame can be wrapped around the chair frame by simply turning the accessory frame after overlapping the brackets of each frame and connecting them with the connecting pins. The frame is fixed to the chair frame. Moreover, by uncoupling the connecting means, the memo pad mounted so as to be wound around is separated from the chair frame so that it can be unraveled and easily removed. Therefore, it is easy to remove and attach accessories such as a memo pad. On the other hand, since the accessory frame and the bracket are wrapped around the chair frame and tightened without any gap, the rattling of the accessory can be prevented, and the mounting rigidity can be significantly improved.

According to the second aspect of the present invention, the brackets of the accessory frame are mounted on the brackets of the chair frame and hooked together to connect the two frames so that they can be pivoted. Since the memo pad can be easily attached to the chair simply by turning the product frame, the attaching / detaching operation becomes easier.

Further, according to the invention of claim 3, the chair frame is surrounded and fixed by the bracket and the connecting plate protruding from the accessory frame in the opposite directions, so that the mounting rigidity is further enhanced.

Further, according to the invention of claim 4, since the accessory frame wound around the chair frame is fastened to the chair frame by pulling the connecting plate between the brackets, the rattling of the accessory frame occurs. It has less flicker and tilt.

[Brief description of drawings]

FIG. 1 is a perspective view of a chair showing a place of use of a mounting device for a chair accessory according to the present invention.

FIG. 2 is an exploded perspective view showing a first embodiment of a mounting device for a chair accessory to which the present invention is applied.

FIG. 3 is a cross-sectional view showing a spring mechanism of the attachment device for the chair accessory of FIG.

FIG. 4 is a cross-sectional view of the attachment device for a chair accessory taken along the line IV-IV in FIG.

FIG. 5 is an exploded perspective view showing a second embodiment of the attachment device for a chair accessory to which the present invention is applied.

6 is a sectional view of the attachment device for the chair accessory of FIG. 5, corresponding to the sectional view of FIG. 4;

FIG. 7 is a cross-sectional view showing an embodiment applied to a case where the present invention is attached to a horizontal frame.

FIG. 8 is a cross-sectional view showing another embodiment of the attachment device for the chair accessory of the present invention.

[Explanation of symbols]

 1 chair 2 chair frame 3 memo pad (accessory) 4 memo pad frame (accessory frame) 5 memo pad mounting device 6, 17 chair side bracket 7 memo pad bracket 9 connecting plate 11 locking pin 16 connecting means 17b connecting means Constituting recess 18 U-shaped bracket 18a Bracket part 18b Hole 18c Connecting plate part 19 Hook member

Claims (4)

[Claims] 1. A device for removably attaching accessories such as a memo pad and an armrest to a chair, wherein each frame of the chair and the frame of the accessory are provided with a bracket protruding in a radial direction and the brackets are attached to each other. While the attachment frame is supported detachably by a connecting pin parallel to the frame so as to be rotatable about the connecting pin, the accessory frame is rotated and brought into contact with the chair frame so as to be wound around the chair frame. A mounting device for a chair accessory, comprising a connecting means for connecting the accessory frame and the chair frame in a state. 2. A plurality of each of the brackets are arranged vertically at a leg portion of the chair frame and at a mounting portion of an accessory frame arranged in parallel with the leg portion of the chair frame. The attachment device for a chair accessory according to claim 1, wherein a connecting pin provided on one of the brackets is hooked on a mating bracket so that the brackets can be horizontally swiveled. 3. The accessory frame is provided with a connecting plate which projects in a direction substantially opposite to the bracket of the frame and surrounds the chair frame between the bracket and the bracket.
The chair accessory mounting device according to claim 1 or 2, wherein the chair frame and the accessory frame are connected by a connecting means via the connecting plate. 4. The apparatus for mounting a chair accessory according to claim 3, wherein the connecting plate is provided between the plurality of brackets of the accessory frame.