JPH0339091Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an attachment/detachment structure for an infant chair, particularly a table attached to the ends of armrests formed on both sides of the seat.

[Prior art and its problems]

A frame (guard frame) formed in a planar U-shape or U-shape is attached so that the tips of the armrests provided on both sides of the seat are connected, and this allows the infant to use the seat of an infant chair or stroller. Alternatively, a table consisting of a plate-shaped body of an appropriate width can be removably attached to the chair so as to protrude forward from the line connecting the tips of the armrests. It has been common practice and well-known practice to allow seated infants to use the table to eat, play games, and handle toys and other play equipment while seated on the table. .

However, the attachment/detachment mechanism employed in conventionally known tables and protective frames is such that a pipe for fitting is protruded at an appropriate length near both ends of the frame in contact with the armrest. The tip of the pipe for use is configured to fit into a fitting hole formed in the armrest.

A spring with a U-shaped side surface and a small protrusion for locking protrudes from the tip is fitted inside the tip of the pipe that is inserted into the fitting hole. The small protrusion that protrudes from the tip of the spring is configured to protrude outward by a predetermined length from a small through hole formed in the pipe.

When the fitting pipe is inserted into the armrest, the small projection protruding outward from the tip of the pipe fits into the locking hole drilled in the armrest, and Further, the tip of the protrusion is configured to protrude outside the locking hole.

When removing the table or protective frame, fit into the locking hole formed in the armrest, and press the protruding part of the locking protrusion whose tip protrudes outside the locking hole with your fingertips. The locking protrusion is retracted to the inside of the locking hole, and then the table is removed by pulling it forward.

It had such a structure.

It has been pointed out that due to the above structure, the conventional structure has the following inconveniences. That is, (1) when removing the table or protective frame (guard) from the armrest, make sure that it is inserted into the fitting hole formed in the armrest and that the tip protrudes to the outside of this fitting hole. The locking protrusion (U
Since you have to press the protruding tip of the spring (which protrudes from the tip of the letter-shaped spring) directly with your fingertips to release it, you have to feel for the protruding part when performing the operation.
When performing pressing operations, strong force is required at the fingertips,
The disadvantage is that it tends to cause pain at the fingertips.

(2) When performing the release operation, you must directly touch the protruding tip of the locking protrusion that protrudes from the tip of the spring and release the lock while pressing it. The region into which the locking protrusion is fitted is limited to a place where a fingertip can be inserted for pressing the locking protrusion, which has the drawback of being accompanied by many restrictions in terms of structural design.

(3) Since a large amount of force is required to remove the locking protrusion that is locked to the armrest, it is not suitable for handling by women or girls who are inexperienced in operating it.

This is the drawback.

[Purpose of invention]

In view of the above-mentioned circumstances, the present invention aims to provide a structure for attaching and detaching a table for a child's chair, which can be operated with one touch not only when attached to the armrest of the table but also when detached.

Another object of the present invention is to provide an infant chair that is easy to operate to release the lock and is configured such that the locking protrusion can be easily released even with a small force. This is intended to provide a table attachment/detachment structure.

[Key points of the idea]

The present invention is a table attachment/detachment structure in which a fitting pipe that protrudes an appropriate length from the tip of the back of the table is removably fitted into a fitting hole formed at the tip of the armrest of the infant chair. A spring having a locking protrusion of an appropriate length protruding from the tip thereof is fitted and housed near the tip of the fitting pipe, and the locking protrusion is formed in the fitting pipe. It is constructed so that it can always protrude to the outside through the through hole, and the protruding locking protrusion can be engaged with a locking receiving hole formed in the fitting hole of the armrest. The spring is made by fixing the base part to the outside of the fitting pipe, and connecting the push button to the tip of the elastic support arm extending from the base. The present invention has devised a table attachment/detachment structure for a child's chair, which is configured so that the locking protrusion protruding from the tip of the spring can freely come out and go in and out of the through-hole part of the fitting pipe. This is the main point.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The infant chair generally designated by A has the upper ends of front legrests 2 and rear legrests 3 pivoted to the lower sides of a pair of armrests 1 and 1, each of which has an inverted U-shaped cross section. It is constructed so that it can be folded freely, and a seat floor part 4 and a back rest part 5 are attached to the inside surrounded by the armrests 1, 1 so as to form an L-shape on the side.

Reference numeral 6 denotes a table that is detachably attached to the ends of the armrests 1, 1, and is made of synthetic resin or other material into a plate shape with an appropriate width and planar shape. ,1
A fitting pipe 7 is provided on the lower surface of both ends on the side that is in contact with the
7 is installed.

The above-mentioned fitting pipes 7, 7 are formed to protrude from the tip of the table 6 by a small amount of length, and this protruding portion is configured to serve as a fitting portion for the armrest 1.

71, 71 are screws for fixing the pipe 7 to the table 6.

Reference numeral 8 denotes a locking protrusion that is attached so that its tip can freely protrude and retract from the through hole 72 portion drilled in the fitting pipe 7, and is attached to a spring 73 with a U-shaped cross section provided inside the pipe 7. The locking protrusion 8 portion is always urged to protrude to the outside of the pipe 7 by the elastic force.

Reference numeral 9 denotes an opening operation body in which a pressing protrusion 93 provided at its tip is inserted through another through hole 74 formed in the fitting pipe 7 and comes into contact with an intermediate portion of the spring 73.

The opening operating body 9 described above is formed using a synthetic resin having an appropriate hardness, and the base 91
A thin band-shaped support arm 92 with elasticity is formed to protrude from the support arm 92, and furthermore, at the tip of this support arm 92, an operation button 94 with a pressing protrusion 93 protruding from the lower surface is continuously provided. It is integrally formed.

The band-shaped support arm 92 described above is configured to have elasticity so that the tip of the protrusion 93 inserted through the through hole 73 will not press the surface of the spring 73 unexpectedly.

Note that the shape of the spring 73 described above is not limited to the U-shape, and any suitable shape such as a plate spring may be freely used as long as the locking protrusion 8 portion can be lifted upward. I can do it.

Reference numeral 11 denotes a fitting hole drilled in the tip end of the armrest 1 in order to fit the fitting pipe 7 of the table 6, and the fitted pipe 7 is formed on the inner lower surface of the fitting hole 11. A receiving hole 12 is recessed into which the locking protrusion 8 protruding from the housing is fitted.

The fitting hole 11 is a cylindrical fitting hole that matches the cross-sectional shape of the fitting pipe 6, and a shallow groove is formed in the lower edge of the fitting hole 11 along its length. (not shown) is preferably formed so that the locking protrusion 8 can slide along this groove portion.

[Manipulation of ideas]

The present invention configured as described above is used in the following manner.

(1) When attaching the table 6 to the armrest 1, simply fit the fitting pipes 7 attached near both ends of the lower surface of the table 6 into the fitting holes 11 drilled in the end end of the armrest 1. Installation can be done with extremely simple operations.

Note that the fitting pipe 7 has a locking protrusion 8 attached to its tip so that it can freely move in and out, so when the above-mentioned fitting operation is performed, the locking protrusion 8 is attached as the fitting pipe 7 enters. is automatically fitted into the receiving hole 12 portion formed on the bottom of the fitting hole 11, and the two are completely integrated, and the table 6 is firmly secured without being separated from the armrest 1. can be retained.

(2) If you want to remove the table 6 attached to the armrest 1, press the tip of the release button 9 attached to the bottom of the fitting pipe 7, and the press button formed on the tip will release. Protrusion 91
presses a part of the spring 73, thereby biasing the spring 73.

The movement of the spring 73 into the pipe due to pressure deviation involves retraction of the locking protrusion 8 formed at the tip of the spring, so that the locking protrusion 8 protruding outside the pipe and the fitting hole 11 are moved into the pipe. The engagement with the formed receiving hole 12 is released, and as a result, the table 6 can be removed.

[Effect of idea]

The effects of the present invention configured as described above are as follows.

(1) If you want to attach the table 6 to the chair body (the armrest 1 part), the ends of the fitting pipes 7 attached near both ends of the bottom surface of the table 6 can be attached to the fitting holes formed in the armrest 1. It is only necessary to insert the pipe 7 into the pipe 11, and the installation can be easily carried out by a one-touch operation of inserting the pipe 7 into the pipe 7.

Moreover, in the fitting pipe 7 fitted into the fitting hole 11, the locking protrusion 8 portion protruding from the outer surface near the tip of the pipe is connected to the receiving hole 12 portion recessed in the fitting hole 11. Since they are automatically fitted, the fitting is maintained extremely firmly and can be prevented from coming off accidentally.

(2) If you want to remove the table 6, press the push operation button 94 formed at the tip of the opening operation body 9 attached to the fitting pipe 7, and the button 94 will be protruded from the bottom surface. The pressing protrusion 93 presses the middle part of the spring 73 so as to bias it, and the locking protrusion 8 attached to the tip of the spring 73 also comes to be recessed inward of the pipe. .

Recessing of the locking protrusion 8 causes the locking with the receiving hole 12 to be released, so that the table 6 can be easily removed.

Particularly, in the present invention, the table 6 is held with both hands, and the operation buttons 93, 93 of the opening operation bodies 9, 9 attached to the fitting pipe 7 are pressed by the fingertips of both hands holding the table 6. Therefore, it has an excellent feature that the table can be easily removed by just one action of pressing the operation buttons 93, 93.

(3) According to the present invention, the locking protrusion 8 protrudes from the tip of the spring 73 when performing the opening operation.
Since there is no need to press directly with a fingertip or the like, there is no need to worry about damaging the fingertip portion during the opening operation unlike in the conventional structure.

(4) Furthermore, according to the present invention, when removing the fitting pipe 7, the opening operation can be performed without directly touching the locking protrusion 8. It is also possible to select the location where the receiving hole 12 is formed (for fitting the hole) even in a narrow position where it is difficult to insert the tip of a finger, increasing the degree of freedom in structural design. .

(5) Since the structure is extremely simple, it is simple enough that even women and girls who are not familiar with operating machines can easily operate it, and the simple structure also reduces manufacturing costs. It has characteristics.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention, and shows the first embodiment.
The figure is a perspective view showing the table attached to a child's chair, Figure 2 is a perspective view taken from the bottom of the table to show the main parts, Figure 3 is an enlarged sectional view showing the waist, and Figure 4 is It is an enlarged sectional view with a part omitted showing a state where it is attached to an infant chair. A...Children's chair, 1...Armrest, 11...
Fitting hole, 12... Receiving hole, 6... Table, 7...
...Mating pipe, 71...Fixing screw, 72,
74... Through hole, 74... Spring, 8... Locking protrusion, 9... Opening operation body, 91... Base, 92...
...Support arm, 93...Protrusion, 94...Operation button.

Claims (1)

[Scope of Claim for Utility Model Registration] A table in which a fitting pipe protruding an appropriate length from the tip of the back of the table is removably fitted into a fitting hole formed at the tip of the armrest of an infant chair. In the attachment/detachment structure, inside near the tip of the fitting pipe,
A spring having a locking protrusion of an appropriate length protruding outward is fitted and housed at the tip, and the locking protrusion is designed so that it can always protrude outward through a through hole drilled in the fitting pipe. The locking projection protruding outward from the through hole of the fitting pipe is capable of engaging with a locking receiving hole formed in the fitting hole formed in the armrest, On the outside near the tip of the fitting pipe, a button for pressing operation with a pressing protrusion formed on the lower surface is connected to the tip of a supporting arm extending from the base with elasticity. At the same time, the base part of the button for opening operation is fixed, and the pressing protrusion formed on the lower surface of the button for pressing operation comes into contact with the spring through the through hole drilled in the fitting pipe. When the pressing button is pressed, the spring is biased, whereby the locking protrusion protruding from the tip of the spring can freely come out and go out from the through hole of the fitting pipe. A table attachment/detachment structure of an infant chair configured to allow the table to be attached and detached.