JPH0558723B2 - - Google Patents

Description

A back metal round attachment fixture for a school bag, characterized by comprising a cover 25 having a cover 25.

[Detailed description of the invention]

<Field of Application for Work> The present invention relates to a back metal round attachment for a school bag, and particularly to a back metal round attachment that allows adjustment of the attachment interval at the upper end of a backpack belt.

<Prior Art> Normally, in a school bag, the distance between the upper ends of the school bag carrying belt is adjusted in accordance with the growth of the child. Conventionally, this type of adjustable round back mount for school bags has been equipped with a round back mount at the top and an arc-shaped plate spring at the bottom, as seen in Japanese Utility Model Application Publication No. 13018/1983. It is known that a pair of sliders are slidably inserted between the base and the cover of the fixture, and the back metal round is rotatably fitted and attached to the back metal round mounting portion. In this type of product, in order to fix the position of the back metal circle, that is, the position of the slider, it is common to have a locking protrusion on the slider and a plurality of engagement recesses on the cover. .

<Problems to be Solved by the Invention> In the above-mentioned prior art, the convex part of the slider and the concave part of the cover are engaged by the leaf spring at the bottom of the slider to position the back metal circle. To adjust the spacing, push down the round back mounting part of the slider that protrudes from the sliding window of the cover against the leaf spring to push down the entire slider, release the engagement between the convex part and the concave part, and then Positioning is performed by sliding the slider left and right while maintaining the depressed state and engaging it in an appropriate engagement recess.

By the way, in the adjustment operation described above, the slider is pushed down and slid against the biasing force of the leaf spring, so a considerable amount of force is required for the operation, and children may feel pain in their hands and fingers during operation. The disadvantage was that it was difficult to

In addition, there is a risk of the skin of your fingers getting caught between the window and the slider during the operation, and since the adjustment is made by engaging the locking protrusion and the engagement recess, the adjustment interval can only be adjusted in stages. There was also the inconvenience of not being able to do so.

Furthermore, there was a problem in that the sliders could only be adjusted one at a time, and the same operation had to be repeated twice for the pair of left and right sliders.

<Means for Solving the Problems> In view of the problems such as the poor operability of the back metal round attachment for school bags based on the above-mentioned prior art, the present invention provides a method in which reverse screws are carved on the left and right sides in the base and cover. A slide screw with an operation dial formed in the center is rotatably provided, a slider is screwed into each reverse thread of the slide screw, and a gold round holder having a back metal round attachment part is connected to the slider. This is an attempt to solve the above-mentioned problems.

<Function> In this invention having the above configuration, a part of the operation dial of the slide screw protrudes from the operation window of the cover, and the back metal circle attachment part of the metal circle holder penetrates and projects from the slide window, so that the operation dial cannot be operated by hand. When the slider is rotated by the slider, the sliders that are screwed into the slider slide in opposite directions to each other, and the distance between the back metal round attachment part that is integrated with the slider is adjusted at once.

<Example> Next, an example of the present invention will be described below with reference to the drawings.

Fig. 1 is a diagram of the completed assembly, showing the two bears with the position of the back gold circle adjusted, Fig. 2 is various cross-sectional views thereof, and Fig. 3 is an exploded view.

In FIG. 3A, reference numeral 1 denotes a base, which has two storage sections 2 for storing a slider and a metal circle holder, which will be described later. As is clear from the side view, the storage section 2 is a slider storage section 3 with a partially bulged part.
and a metal round holder storage part 4, and has a slit 5 in the lateral direction at the upper part. Note that 6 is a hole for a mounting screw.

FIG. 3B shows the gold round holder sliding bed 7, which has grooves 8 formed on its surface to facilitate sliding, and bearing portions at both ends of the upper portion for supporting slide screws, which will be described later. 9 is provided. A pair of sliding beds 7 are prepared.

FIG. 3C shows a gold round holder 10, which, as is clear from the side view, is made of a plate-shaped body, and a part of its lower part has a metal round mounting part 11 that protrudes upward. is installed protrudingly. Further, a slider holding recess 12 is formed in the upper part, and an engagement hole 13 is bored in the bottom of the recess 12 . A pair of the metal round holders 12 are also prepared.

FIG. 3D shows the slider 14,
As is clear from the side sectional view, the gold round holder 1
It consists of a lower columnar body 15 having a width dimension that fits within the recess 12 of 0, and a semi-cylindrical head 16. A female screw portion 17 is formed at the center of the cross section to engage with a screw of a slide screw, which will be described later.
At the bottom of 5, there is an engagement hole 1 of the gold round holder 10.
A protrusion 18 that engages with 3 is bored. A pair of sliders 14 are also prepared, and the female threaded portion 1
In No. 7, the directions of the screws are opposite to each other, and one side has a right-hand thread, and the other side has a left-hand thread.

A slide screw 20 is shown in FIG. 3E, and an operation dial 21 is formed in the center of the slide screw 20.
Threads 22 and 23 are formed with opposite thread directions.

A cover 25 is shown in FIG. 3F, and the cover 25 has an operation window 26 in the upper center thereof, and slide windows 27, 27 extending in the left-right direction on both sides of the lower part. There is. In addition,
Reference numeral 28 denotes a mounting screw hole, which is located in a position corresponding to the mounting screw hole 6 of the base 1.

The assembled state of each of the above members will be explained based on FIG. 2.

Kanemaru holder sliding floor 7 inside the storage section 2 of the base 1
are stored respectively. As is clear from FIG. 2D, the upper part of the sliding bed 7 has a gold round holder
0 is placed thereon, and can be slid left and right as shown in FIG. 2A. At this time, the gold circle mounting portion 11 of the metal circle holder 10 protrudes from the slit 5 of the base 1. A slider 14 is housed in the slider holding recess 12 of the metal round holder 10, and the two are integrated by the protrusion 18 at the bottom engaging in the engagement hole 13 of the metal round holder 14. .

The slider 14 includes the slide screw 20
The slide screws 20 are screwed into left and right reverse screws 22 and 23, respectively, and the slide screws 20 are connected to the support portion 9 of the sliding floor 7.
is rotatably supported.

Then, the cover 25 is placed over these, but at this time, a part of the operation dial 21 of the slide screw 20 protrudes from the operation window 26 of the cover 25, and the gold-round mounting portion 11 of the metal-round holder 10 is attached to the base 1. protrudes from the slit 5 of the cover 25, and further protrudes from the slide window 27 of the cover 25 (the second
(See Figure D). A metal ring 30 is loosely fitted into the metal ring mounting portion 11, as shown in FIG.

The back metal round mount thus assembled is attached to the back plate of a school bag (not shown) with screws through the mounting holes 28 and 6 of the cover 25 and base 1. In addition, 31 is a hanging fitting.

In the above configuration, when adjusting the interval between the gold circles 30 and 30, when the operation dial 21 of the slide screw 20 is rotated, the slider 1 is screwed into the left and right screws 22 and 23 of the slide screw 20, respectively.
0 and 10 slide in opposite directions to narrow or widen the gap. (See Figure 1) <Effects> As described above, according to the present invention, a gold-round holder having a metal-round mounting portion is connected to a slider, and the slider is screwed into a slide screw having screws in opposite directions. This provides an excellent effect in that the interval between the metal circles, that is, the attachment position of the backpack belt can be adjusted by the simple operation of rotating the slide screw.

Furthermore, the operation does not require any special force as in the prior art, and only requires turning the operation dial with the fingers. Therefore, even children can easily perform the adjustment work themselves. can.

In addition, the screw structure of the slider and slide screw allows adjustment at any position.
Another advantage is that it is extremely adaptable to the child's body position.

[Brief explanation of the drawing]

The figure shows an embodiment of the invention.
The figure shows a completed assembled view, A shows a narrowly adjusted state, B shows a widely adjusted state, Figure 2 shows a sectional view, A is a plan sectional view, B is a XX sectional view of A, and C is a sectional view taken along the line XX of A. Y-Y sectional view, D is Z-Z sectional view, Figure 3 is an exploded view, A is a base plan view and side view, B is a plan view and side view of Kanamaru holder sliding floor, C is A plan view and a side view of the gold round holder, D a side view and a cross-sectional view of the slider, E a plan view of the slide screw, and F a plan view of the cover. DESCRIPTION OF SYMBOLS 1... Base, 2... Storage part, 5... Slit, 7... Kanemaru holder sliding floor, 10... Kanemaru holder, 12... Recessed part for holding slider, 13...
...Engagement hole, 14...Slider, 17...Female thread, 18...Protrusion, 20...Slide screw, 21
...Operation dial, 22, 23...Reverse screw, 25
...Cover, 26...Operation window, 27...Sliding window.

Claims (1)

[Claims] 1. It is rotatably provided in a base 1 attached to the outer surface of the back plate of the school bag, and has reverse screws 22 and 23 carved from the center to the left and right, and an operation dial 21 is provided in the center. The formed slide screws 20; sliders 14, 14 that are screwed onto the screws 22, 23 and are slidable within the base 1; and a back metal round mounting portion that is connected to the sliders 14, 14 and is slidable. Kanamaru holder 1 with 11
0, 10, and an operation window 26 which is detachably attached to the base 1 and from which the operation dial 21 projects to the outside.
Back metal circle mounting part 1 of the above metal circle holders 10, 10
1 and 11 protrude through the sliding windows 27 and 27.