JPH0324087Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a locking device for a school bag lid and a device for attaching a backpack strap.

[Conventional technology]

For the back strap of the school bag, connect the base end of the long string to
Attached to the back plate of the school bag body,
The base ends of the small strings are attached to the bottom plate of the school bag body, and the tips of the long strings and small strings are connected to each other.

Further, the school bag lid has an engagement piece provided at the tip of the extension piece that is locked to the bottom plate of the school bag body.

Furthermore, attachment of at least one end of the backpack strap and locking of the school bag lid are specifically performed on a main lock plate fixed to the bottom plate of the school bag body.

[The problem that the idea aims to solve]

The main plate of the lock is made of metal or synthetic resin, and more specifically the locking mechanism that locks the rotary body so-called Daruma ring to which the base end of the small string is attached, and the engagement piece of the schoolbag lid. Operators, so-called knobs, etc., are arranged so as to protrude from the upper surface of the lock main plate, and the upper surface of the lock main plate itself is shaped with appropriate heights and is not flush.

For this reason, the main body of the school bag cannot be kept upright in a stable state, and there is an inconvenience in that the main body of the school bag must be placed horizontally or supported with one hand to take in and take out stored items.

The purpose of the present invention is to eliminate such inconvenience and to make it possible to easily stand up the school bag body.

[Means to solve the problem]

The structure of the present invention adopted to achieve the above object is as follows.

Lock main plate a installed on the bottom plate 2 of the school bag body 1
Knapsack band attachment parts 13, 13 are formed on the left and right sides of the central locking part 12.

The lock base part 12 has an extension piece 4 of the school bag lid 3.
A locking mechanism d that locks the engaging piece 5 fixed to the tip of the
is being constructed.

In addition, the left and right shoulder strap mounting base parts 13, 1
Rotating bodies b, b, which are rotatably provided with mooring rings 8, 8 to which the base ends of the small straps 7, 7 of the backpack bands c, c are attached, are pivotally supported on the rotating bodies 3.

Above left and right shoulder strap mounting base parts 13, 13
The top surface is flush.

Furthermore, the upper surfaces of the locking base part 12, the locking mechanism d, and the rotating bodies b, b are flush with the upper surfaces of the backpack band attachment base parts 13, 13, or are at least lower than that.

[Effect]

In this way, the main lock plate a installed on the bottom plate 2 of the school bag body 1 makes the upper surfaces of the left and right shoulder strap attachment bases 13, 13 flush with each other, and the lock base part 12, the locking mechanism d, and the rotation Since the upper surfaces of the bodies b and b are flush with or at least lower than the upper surfaces of the backpack band attachment parts 13, 13,
The school bag body 1 can be stably erected with the main lock plate a facing downward.

〔Example〕

The illustrated embodiment will be described in detail below.

a is a lock main plate installed on the bottom plate 2 of the school bag body 1, its left and right extension pieces 10, 10 are bent horizontally toward the inside of the lock main plate a, and screws (not shown) are inserted into through holes 11, 11. (not shown) is fixedly installed on the bottom plate 2 by caulking or the like (FIGS. 5 and 6 A).

Reference numeral 5 denotes an engagement piece fixed to the tip of the extension piece 4 of the school bag lid 3. By locking this engagement piece 5 to the main lock plate a, the school bag lid 3 is maintained in a closed state.

The main lock plate a has shoulder strap mounting parts 13, 1 on the left and right sides of the central locking part 12, with the upper surface flush with each other.
3, and this mounting base part 13,
The rear surface of the lock plate 13 forms left and right mounting surfaces 6, 6 which form an angle of approximately 120° with the bottom surface of the lock main plate a, that is, the bottom plate 2 of the school bag body 1.

Furthermore, the left and right mounting surfaces 6, 6 are in a state of being enlarged toward the left and right outwards.

Reference numerals b and b denote rotary bodies commonly referred to as daruma, which are rotatably and laterally slidably provided on the left and right mounting surfaces 6, 6, and their detailed configuration is as follows.

The left and right mounting surfaces 6, 6 have horizontally elongated holes 14, 14, into which shaft rods 15, 15 are loosely fitted.

16 is a saucer body fitted to the shaft rod 15; 17 is a cover body which is also fitted to the shaft rod 15 and the saucer body 16; these pair of saucer body 16 and cover body 17 are connected to the rotating body; b.

The rotating bodies b, b are set such that their upper surfaces are flush with or at least lower than the upper surfaces of the backpack band attachment bases 13, 13.

Reference numeral 18 denotes a coil spring that is wound and fitted around the shaft rod and interposed between the saucer body 16 and the cover body 17, and presses the saucer body 16 against the mounting surface 6, and also pushes the cover body 17 against the shaft rod 15. This causes the inner end flange 19 of the shaft rod 15 to come into pressure contact with the inner edge surface of the horizontally elongated hole 14.

Reference numerals 20 and 21 are small unevennesses provided to engage with each other between the inner edge surface of the horizontally elongated hole 14 and the opposing surface of the inner end flange 19. During the pressure welding, the engagement of these small unevennesses 20 and 21 causes the rotating body to b is locked at the position without being able to slide laterally.

However, when the shaft 15 is pushed inward against the coil spring 18 of the lock main plate a, the small unevenness 20, 21
The mesh can be easily released (Fig. 4), and as it is,
The rotating body b can be slid laterally along the horizontally elongated hole 14, and by stopping the pushing, it can be locked in that position again.

Reference numeral 8 denotes a mooring ring attached to the cover body 17 of the rotating body b so that it can be rotated up and down; c is a shoulder strap consisting of a long string 22 and a small string 7; the base end of the small string 7 is attached to the mooring ring 8; ing.

When we look at the situation in which both free ends of the small string 7 and the long string 22 that overlaps and connects with the body 9 come into contact with the body 9 when carrying the school bag with the above configuration, we can see that the small string 7 is The end surfaces 7', 7' are positioned one above the other, and the flat surface is brought into contact with the flank portion of the body 9 (FIG. 6B).

Next, the configuration of the locking mechanism d that locks the engagement piece 5 of the school bag lid 3 will be explained.

23 is the window hole 12' of the lock base part 12 of the lock main plate a.
A bottom box 2 whose top opening 23' is aligned with the bottom box 2
Reference numerals 4 and 25 denote an operating piece and a locking piece housed in the bottom case 23. The operating piece 24 is compressed by a spring 26 and protrudes upward through the top opening 23' and the window hole 12'. The piece 25 is urged by a spring 27 to be biased rearward (to the right in FIGS. 7 and 8).

The upper surfaces of these operating pieces 24 and locking pieces 25 are set to be flush with or at least lower than the upper surfaces of the backpack band attachment bases 13 and 13.

The locking piece 25 normally has an engaging claw edge 2 on a protruding edge 24' having a triangular cross section of the operating piece 24 in an upwardly protruding state.
5', the lock is held in the unlocked position against the above-mentioned bias (FIG. 7).

When the operating piece 24 is pushed down against the spring 26, the engagement is released, and the locking piece 25 is biased rearward by the force of the spring 27, and the horizontal protrusion 28 is pushed into the upper surface opening 23' and the window hole 12. ' (Fig. 8).

On the other hand, the engagement piece 5 of the school bag lid 3 has an engagement hole 5' that can be fitted into and removed from the locking piece 25 and the operating piece 24 when they are in the unlocked position.

Therefore, the engaging piece 5 is positioned on the lock base part 12 by fitting the engaging hole 5' into the locking piece 25 and the operating piece 24, and pressing down the operating piece 24, the locking piece 25 When the is placed in the closed position, the horizontal protrusion 28 engages with the engagement hole 5'.
Since the engaging piece 5 is engaged with the edge of the engaging piece 5, it is no longer possible to remove the engaging piece 5 (FIG. 8). In this state, the operation piece 24
This continues even when the operating piece 24 is caused to protrude upward by releasing the pressing force on the button (FIG. 8).

However, when the locking piece 25 is pushed forward (to the left in Figs. 7 and 8) against the biasing force of the spring 27, the joint pressure between the protruding edge 24' and the engaging claw edge 25' causes the locking piece to be operated once. While the piece 24 is slightly lowered against the spring 26, the locking piece 25 moves to its original position, and as the operating piece 24 is raised by the spring 26, it is again held at the unlocked position (Fig. 7). ). Therefore,
The engagement piece 5 can be freely removed.

29, 29 are inside the lock base part 12, and the bottom case 2
With permanent magnets placed on the left and right sides of 3,
The engagement piece 5 is attracted to the upper surface of the lock base portion 12 when the lock piece 25 is in either the open or closed position. In addition, the engaging piece 5 in the adsorbed state has its tip 5'' protruding into the recess 30 on the rear side of the lock base portion 12, and when it is to be removed, it can be easily operated by grasping its tip 5''. I have made it possible.

Note that the angle formed between the attachment surface 6 of the rotating body b and the bottom plate 2 of the school bag body 1 is not necessarily limited to about 120 degrees as in the above embodiment. That is, the angle is 90° as shown in Figure 9.
It can be set to approximately 150° as shown in Figure 10, approximately 130° as shown in Figure 11, etc., and the range is
Any angle of 90° or obtuse angle is sufficient.

[Effect of idea]

As is clear from the above, according to the device of the present invention, the main body of the school bag can be held upright with the main lock plate facing downward, and therefore, the stored items can be taken in and out by opening the top surface of the main body of the school bag while in the upright state. This can be easily carried out through the bag, and eliminates the inconvenience of having to support it with one hand or placing it horizontally to take in and out the stored items.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Figure 1 is a plan view, Figure 2 is a rear view, Figure 3 is a side view, and Figure 4 is a side view.
The figure is an enlarged sectional view of the rotating body part, Figure 5 is a perspective view of the school bag attached to the school bag, Figure 6 A and B are explanatory views of the school bag in use in Figure 5, and Figures 7 and 8 are The enlarged sectional views of the locking mechanism portion and FIGS. 9 to 11 are side views of other embodiments, and in particular, FIG. 9 shows the locking mechanism in a state where it is attached to the bottom plate of the school bag body. 1... School bag body, 2... Bottom plate, a... Lock main plate, 12... Lock base, 13... Back strap attachment base, 3... School bag lid, 4... Extension piece, 5... Attachment Joint piece, d... Locking mechanism, c... Carrying band, 7... Small string, 8... Mooring ring, b...
…Rotating body.

Claims (1)

[Scope of utility model registration request] The main lock plate installed on the bottom plate of the school bag body forms a lock base in the center, and a shoulder strap attachment base on the left and right sides of the lock base, and is fixed to the lock base at the tip of the extension piece of the school bag lid. A locking mechanism is installed to lock the engaging pieces, and a rotary body is pivotably supported on the left and right band mounting bases, and a mooring ring for attaching the base ends of the small straps of the backpack band is provided so as to be rotatable up and down. Also, the upper surfaces of the left and right shoulder strap attachment bases are flush with each other, and the upper surfaces of the locking base, the locking mechanism, and the rotating body are flush with the upper surfaces of the left and right backpack strap attachment bases. or at least lower than that.