JPH0122513Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Purpose of the invention (Field of industrial application) The present invention relates to the improvement of locks for school bags.

<Concerning the Prior Art> Fig. 1 is a plan view of a conventional school bag lock, and its configuration is a Daruma body 1 having band attachments 3 at both ends of the main body 1 for attaching backpack bands 2 (indicated by imaginary lines). A spring (not shown) that interacts with the twist 5 and a latch piece 6 are attached to the main body 1, and a magnet (not shown) that attracts the latch piece 6 to the main body is provided on the back of the main body 1. Attach the stopper 6 to the end of the lid of the school bag, attach the main body 1 to the bottom of the school bag, and attach the band.
3 is configured so that a backpack band 2 can be attached to it.

<Problems with the Prior Art> As described above, the mounting position and the mounting width of the backpack strap 2 are determined by the size (horizontal length) of the lock body 1. Moreover, this horizontal length is almost the same for each manufacturer, and when this is attached to a school bag, the original width will remain the same regardless of the size of the child using it. Therefore, as children grow older, everyone has experienced that the movements of carrying a school bag on one's back or taking it off one's shoulders become extremely unnatural.

<Technical issues of the present invention> In view of the above, the present invention is designed to adjust the length of the backpack band 2 as the child grows (it is well known that the band has holes for adjusting the length). Not only that, but also the attachment width of the band 2 can be adjusted so that children can easily put on and take off the school bag.

(2) Regarding the structure of the invention, <Means for solving the problem> Daruma mounting portions 7 are formed by providing Daruma slide grooves 10 at both ends of the schoolbag lock body 1, and a flange is provided at the other bottom. The rivet 9 of the daruma 4, which is integrally constructed with the daruma 4' having the shank 8 and its mounting rivet 9, is connected to the daruma slide groove 1.
The mounting rivet 9 is configured to be able to slide left and right in the Daruma slide groove 1, and the Daruma mounting portion 7 and the Daruma 4 can be locked together.
Insert into Daruma 0 and insert Daruma 4 into Daruma slide groove 1
The Daruma mounting part 7 is configured to be slidable left and right under the guidance of 0, and the Daruma mounting part 7 and Daruma
4 are provided with engaging slide stop portions that stop or enable sliding of the Daruma 4 by mutually locking or releasing the lock, and the Daruma 4 is prevented from sliding. By sliding left and right by the length of the groove 10, the strap attachment width of the school bag can be adjusted.

<About action> Since the present invention has the above structure, Dharma 4
Rotate to release the engagement between the Daruma 4 and the Daruma mounting part 7, and move the Daruma 4 to the left and right.The mounting rivet 9 will slide left and right in the Daruma slide groove 10, allowing the band to be attached 3. The attached band 2 slides, and the band attachment width can be adjusted to either wide or narrow. Also, by rotating the Daruma and engaging both engagement slide stops, the Daruma 4 will be engaged in the slid position. It can be stopped.

<Example> Next, the structure and operation of the drawings which are examples will be explained.

Figure 2 is an explanatory plan view showing an embodiment of the lock of the present invention.Band attachment 3 and Daruma for attaching the backpack band 2
Remove one side of 4 and attach the attachment part 7 of Daruma 4.
The structure of is clarified. The daruma attachment part 7 is formed at both ends of the main body 1 as a concave part with two circles having a diameter slightly larger than the diameter of the tsuba 8 of the daruma 4 with their arcs partially intersecting. There is. Daruma slide grooves 10 are provided at appropriate lengths on lines connecting the centers of the circles so that the mounting rivets 9 of the Daruma 4 can be moved freely left and right.

The tsuba 8 of the Daruma 4 is notched parallel to the target position and with a distance that allows it to freely pass through the intersection of the arcs of the Daruma attachment part 7, and 11 is the notch. Other Tsuba 8 that are not missing
The part is the engagement slide stop part 11' in Daruma 4.
form. Further, the intersection of the circular arcs of the Daruma mounting portion 7 forms an engagement slide stop portion 7' of the Daruma mounting portion 7. 13 is a screw hole for attaching a school bag.

Next, FIG. 3 is a front explanatory view of the present invention, with a portion shown in cross-section.

That is, the Daruma 4 has its mounting rivet 9 inserted into the slide groove 10, a washer 14 is supported at the tip of the rivet 9 by a nut 15, and the Daruma 4's flange 8 and the washer 14 are connected to the Daruma mounting portion. 7 so that it can rotate and slide. Of course, the slide groove 10 has a width that allows the rivet 9 to slide freely.

In the figure, H indicates the maximum installation width of the backpack band 2, and H
1 is its minimum installation width, and H2 is the sliding width of the daruma 4 (therefore 3, rivets 9, etc.).

In addition, in the present invention, the technical content of sliding the Daruma 4 is constructed as shown in the drawing, but the point is that the attachment width H of the backpack band 2 can be configured to be wide or narrow by sliding the Daruma 4. Of course, there is no need to limit yourself to the technique of this embodiment, especially if you use Dharma 4.
Since the slide shown in FIG. 1 is a slide of the mounting rivet 9, engaging slide stop portions may be formed in the mounting rivet 9 and the Daruma slide groove 10, respectively.

<Function> Since the present embodiment has the above-described configuration, when the child carrying the school bag is still small, by holding the band attachment 3 and rotating the daruma 4, the daruma 4 will rotate together with the rivet 9. From, Tsuba 8
Align the parallel notch line 11 of the Daruma 4 with the circular arc crossing part of the Daruma mounting part 7, that is, the engagement slide stop part 7'.
If you move the rivet 9 toward the center of the main body 1,
The Daruma 4 slides inside the Daruma slide groove 10, and the Daruma 4 slides on the upper surface of the Daruma mounting portion 7. If Daruma 4 moves, if Daruma 4 is rotated by 3, Daruma 4 will no longer move in the original direction. That is, the engagement slide stop portion 7'
The engaging slide stop portion 11' is engaged with the Daruma.
4 slide is stopped. If the left and right Daruma 4 are simultaneously slid to this position, the backpack band 2 can be used at the minimum width position.
In addition, as the child grows, or the shoulder straps become larger due to thick winter clothing, and it becomes difficult to put the school bag on and off, slide the Daruma 4 into the outer arc (installation recess). Then, the backpack band 2 becomes wide and attached, so that the child can easily put it on and take it off.

(3) Effects As described above, when using the lock for school bags according to the present invention, the attachment width of the backpack band 2 can be adjusted to suit the physique of the child or the thickness of seasonal clothing, making it easier to carry the child on his or her back. It has the great advantage of being extremely easy to install.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory plan view showing an example of a conventional school bag lock. Fig. 2 is an explanatory plan view showing an embodiment of the present invention, showing the structure of the lock body with the band attachment and one daruma removed, and Fig. 3 is a partially sectional view showing the structure of the lock body. FIG. 1... Lock body, 2... Back strap, 3... Band attachment, 4... Daruma, 4'... Daruma, 7
...Daruma mounting part, 7'...Engagement slide stop part,
8...Tsuba (of Daruma), 9...Mounting rivets,
10... Daruma slide groove, 11... Notch part (of the mounting rivet), 11'... Engagement slide stop part, 12... Lid of school bag, 14... Washer,
15...Natsuto.

Claims (1)

[Scope of utility model registration request] In the lock for school bags in which the attachment parts of Daruma for band attachment are provided on both ends of the main body, Daruma
A Daruma slide groove 10 of an appropriate length is provided in the mounting portion 7, and the mounting rivet 9 of the Daruma 4 is configured such that the Daruma 4' and its mounting rivet 9 can rotate simultaneously. At the same time, the Daruma mounting part 7 and the Daruma 4 are configured so that they can be locked, and the Daruma 4 is held on the Daruma mounting part 7, and the Daruma
A lock for a school bag, characterized in that the band attachment width can be adjusted by sliding left and right.