JP3532383B2 - Chair side part mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair in which a memo stand or an armrest, which is formed separately from a chair body, can be attached to and detached from the chair body. The present invention relates to a mounting device for a side part such as a memo stand or an armrest. 2. Description of the Related Art When chairs are used in recent multipurpose halls, for example, only chairs with armrests are individually arranged according to the type of gathering and the relationship between the size of the room and the number of people. It is used in various forms, such as setting up, arranging chairs without armrests in a connected state, arranging a table in front of the chair, arranging chairs with a memo table without using a table. As described above, when trying to use different chairs according to the purpose of use, circumstances, and the like, various chairs such as a chair without a memo table, a chair with a memo table, or a chair without an armrest or a chair with an armrest are available. Often needed. [0004] However, this is not only uneconomical but also requires labor for exchanging chairs. For example, it is necessary to detachably attach a memo table to a chair body. What is possible is desired. [0005] As this type of device, there is a device in which a lower portion of a column supporting a memo table is screwed to an upper portion of one of legs provided on the left and right sides of a seat (Japanese Utility Model Application Laid-Open No. 56-5155).
No. 9), Japanese Utility Model Application Laid-Open No. 6-38714, Japanese Utility Model Application Laid-Open No. 8-24081, and the like. It is known that a memo table can be attached to a chair body by inserting a horizontal insertion rod extending inward from a lower end. In the former case, the memo table can be securely and securely attached to the chair body, but there is a problem that it takes time to mount and remove the memo table. On the other hand, in the latter case, mounting and dismounting of the memo table can be performed in a short time, but if the fitting accuracy of the mounting rod and the insertion rod is poor, rattling tends to occur, and conversely, the fitting is tight. Instead of rattling, it was necessary to attach and detach the memo table to and from the chair body, and it was difficult to attach the memo table to many chair bodies. Further, when the number of times of attaching and detaching the memo table to and from the chair body is increased, the mounting rod and the insertion rod are worn out, which causes a problem of rattling. According to the present invention, in order to solve such a problem, the side parts can be easily attached to and detached from the chair body in a simple operation and in a short time, and the attached side parts can be securely mounted.
It is an object of the present invention to provide a device for mounting a side part of a chair without rattling. According to the present invention, there is provided an apparatus for mounting a side part of a chair, wherein a horizontal support rod is extended from a lower end to a support for supporting the side part of the chair. With
A horizontal telescopic rod which is elastically inserted into the support rod and is always elastically urged by a spring in the extension direction is extended , and an upper plate and a lower part are provided at predetermined positions of the support rod or the support near the support. Board
A first engagement portion having also a predetermined position of the extendable rod
Forming a second engagement portion having upper and lower plates, said supporting rod
And insert the telescopic rod inward from the outside of the chair,
The second engagement portion is provided at two fixed portions provided on the chair.
After engaging with one of the fixed parts, counter the elastic biasing force.
Contracting the telescopic rod with respect to the supporting rod,
The first force is released by releasing the force of the telescopic rod in the contraction direction.
Of the two fixed portions to the other fixed portion
By engaged, front with respect to the fixed portion of the two locations
The first engagement portion and the second engagement portion are formed by elasticity of the spring.
The strut can be fixed to the chair by being brought into pressure contact with the stretching force of the telescopic rod by an urging force. Due to this feature, when attaching or removing a side part such as a memo table or an armrest to the chair body, a telescopic rod that is telescopically fitted to a support rod extending from the lower end of the column supporting the memo table is used. By expanding and contracting, the first
The engaging portion and the second engaging portion can be easily engaged with or released from at least two fixing portions of the chair, respectively. Further, when the memo table is attached to the chair body, the first engagement portion and the second engagement portion are engaged with at least two fixed portions by the elastic urging force of the telescopic rod in the extending direction. To the chair itself,
It is held without rattling. Also, the first and second engagement portions
The upper plate and the lower plate are engaged with the fixing portion.
As a result, the first and second engaging portions are reliably prevented from deviating in the vertical direction.
Is done. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a first embodiment of the present invention as a memo table as a side part of a chair. Is shown, 2 is a seat plate, 3 is a backrest, and 4 and 5 are front and rear leg rods, respectively. As shown in particular in FIG. 2, the upper part of the left and right front and rear leg rods 4 and 5 of the chair 1 is connected by a connecting member 7 having a horizontal portion 6 which is horizontal in the front and rear direction. Two connecting rods 8 extending in the left-right direction on the back surface of the seat plate 2 are provided on the front and rear upper inner surfaces of the connecting members 7 on both sides of the chair 1.
8 'are connected to each other. Further, front and rear rods 10, 10 for connecting the both connecting rods 8, 8 'are attached to predetermined positions of the connecting rods 8, 8'. A substantially L-shaped support member 9 for supporting the backrest 3 is fixed to the left and right upper portions of the seat plate 2 of the connecting rods 8 and 8 '. Further, between the support member 9 and the horizontal portion 6 of the connecting member 7, a hole S for inserting a support rod of a memo table to be described later is provided.
Is formed. The memo table 11 is removably mounted on the right side of the chair 1 by a memo table mounting device 12 shown in FIG. The memo table mounting device 12 includes a column 13 for supporting the memo table 11, a first L-shaped engagement member 14 attached to a lower portion of the column 13, and a vertical plate 14a of the first engagement member 14. Support rod 1 attached inward from the side
5 and a telescopic rod 16 which is telescopically inserted into the support rod 15 and a second engaging member 17 attached to the tip of the telescopic rod 16. Incidentally, on the first engagement member 14
A reinforcing plate 18 is fixed to the upper surface of the plate 14b . A guide pin 20 is slidably fitted in a long groove 19 formed on the upper and lower surfaces of the support rod 15 at a predetermined position of the telescopic rod 16. This guide pin 20
Thereby, the movement of the telescopic rod 16 in the extension direction due to the elastic bias of the spring 21 inserted into the support rod 15 is restricted, and the telescopic rod 16 is prevented from deviating from within the support rod 15. Next, a method of mounting the memo table mounting device 12 configured as described above to the chair 1 will be described with reference to FIGS. 4A to 4C. First, as shown in FIG. Then, the telescopic rod 16 and the support rod 15 are inserted inward from the outside of the hole S, that is, toward the seat plate. Next, as shown in FIG. 4B, after the second engaging portion 17 at the tip of the telescopic rod 16 is engaged with the front and rear rods 10 as a fixing member, the telescopic rod 16 The spring 21
The first engaging portion 1 while contracting against the elastic biasing force of
4 is aligned so as to engage the horizontal portion 6. When the force in the contracting direction of the telescopic rod 16 shown in FIG. 4C is released, the telescopic rod 16 is extended by the elastic biasing force of the spring 21, and the first engaging part 14 is moved to the horizontal part 6. , The second engaging portion 17 engages with the front and rear rods 10 respectively. The vertical plates 14a, 17a of the first and second engagement portions 14, 17
Is strongly pressed against the horizontal part 6 and the front and rear rods 10 by the stretching force of the elastic rod 16 due to the elastic urging force of the spring 21, so that the support rod 15 and the elastic rod 16 are It is held between the front and rear rods 10. The first and second engaging portions 14 and 17 are provided with upper and lower plates 14b and 17b and lower and upper plates 14c and 17c.
The deviation of the second engagement portions 14 and 17 in the vertical direction is reliably prevented. Therefore, as shown in FIG.
Can be easily and securely attached to the chair 1 via the memo table attaching device 12. When removing the memo stand 11 from the main body of the chair 1, the above steps are reversed, and a force in the contraction direction is applied to the telescopic rod 16 to engage the horizontal portion 6 with the first engagement portion 14. It is only necessary to release and then release the engagement between the front and rear rods 10 and the second engaging portion 17. As described above, the memo table mounting device 12 of the present invention.
Since the engaging portion can be easily engaged with or released from a predetermined portion of the chair simply by extending and retracting the extendable rod 16 with respect to the support rod 15, the memo table 11 can be easily attached to and detached from the chair 1. It is possible to ensure that there is no rattling or the like. FIG. 6 shows a modification of the memo table mounting device 12. In the above-described embodiment, the support rod 15 and the telescopic rod 16 are attached so as to be inserted into the hole S. In this manner, the lower end of the support 13 is attached to the lower plate 14c of the first engagement portion 14 and supported. The rod 15 and the telescopic rod 16 can be attached without being inserted into the hole S. FIG. 7 shows another embodiment of the present invention. As described above, not only the memo table but also the armrest 21 and the like are provided via the mounting device 12 used in the above-described embodiment.
It can be easily attached to and detached from the chair 1. Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention. For example, the positions of the two fixing members are arbitrary, and at least two members separated from each other may be located on any of the chairs. The present invention has the following effects. According to the present invention, when a side part such as a memo table or an armrest is attached to or detached from the chair body, it is telescopically fitted to a support rod extending from a lower end of a column supporting the memo table. By expanding and contracting the telescopic rod,
The engaging portion and the second engaging portion can be easily engaged with or released from at least two fixing portions of the chair, respectively. Further, when the memo table is attached to the chair body, the first engagement portion and the second engagement portion are engaged with at least two fixed portions by the elastic urging force of the telescopic rod in the extending direction. To the chair itself,
It is held without rattling. Also, the first and second engagement portions
The upper plate and the lower plate are engaged with the fixing portion.
As a result, the first and second engaging portions are reliably prevented from deviating in the vertical direction.
Is done. [0028]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a chair to which a memo table mounting device as a first embodiment of the present invention is applied. FIG. 2 is a left side view of FIG. FIG. 3 is an enlarged plan view of a main part of the memo table mounting device. 4 (a) to 4 (c) are enlarged views of a main part showing a method of attaching / detaching the memo table attaching device of FIG. 3 to / from a chair. FIG. 5 is a front view showing a state where the memo table attaching device is attached to a chair. FIG. 6 is a front view of a chair showing a modified example of the memo table mounting device as another embodiment of the present invention. FIG. 7 is a perspective view of a chair showing an armrest mounting device according to another embodiment of the present invention. [Description of Signs] 1 Chair 2 Seat plate 3 Backrest 4 Front leg rod 5 Rear leg rod 6 Horizontal part (fixing member) 7 Connecting member 8, 8 'Connecting rod 9 Supporting member 10 Front and rear rod (fixing member) 11 Note table ( 12 side note) 12 memo table support device 13 support column 14 first engagement portion 14a, 17a vertical portion 14b, 17b upper plate 14c, 17c lower plate 15 support rod 16 telescopic rod 17 second engagement portion 18 reinforcing plate 19 long groove 20 Guide pin 21 Spring 22 Armrest (side part)

Claims (1)

(57) [Claim 1] A horizontal support rod extends from a lower end to a support column for supporting a side part of a chair,
A horizontal telescopic rod which is elastically inserted into the support rod and is always elastically urged by a spring in the extension direction is extended , and an upper plate and a lower part are provided at predetermined positions of the support rod or the support near the support. Board
A first engagement portion having also a predetermined position of the extendable rod
Forming a second engagement portion having upper and lower plates, said supporting rod
And insert the telescopic rod inward from the outside of the chair,
The second engagement portion is provided at two fixed portions provided on the chair.
After engaging with one of the fixed parts, counter the elastic biasing force.
Contracting the telescopic rod with respect to the supporting rod,
The first force is released by releasing the force of the telescopic rod in the contraction direction.
Of the two fixed portions to the other fixed portion
By engaged, front with respect to the fixed portion of the two locations
The first engagement portion and the second engagement portion are formed by elasticity of the spring.
Side parts of the mounting device of the chair, characterized in that to be able to secure the front <br/> Symbol strut against the chair by pressing with the stretching force of said stretching rod by the biasing force.