JP3045243U - Shoulder strap - Google Patents

Abstract

(57) [Problem] To provide a thin backpack attachment capable of attaching and detaching the upper ends of a pair of backpacks with substantially one touch. SOLUTION: A thin container-shaped main body (1) is provided on a bag main body (R).
Attach 0). The inside of the main body (10) is partitioned right and left by a central vertical partition (12), and locking window holes (13a, 13a) are provided in both side walls (13, 13). At the top of a pair of band detachable pieces (20) removably inserted into the left and right body parts (10a, 10b) from the upper opening (11) of the main body (10), a mounting frame part (21) for a backpack belt (30). Is provided with a forked branch insertion portion (22) at the bottom. One leg (22a)
Into a straight rod shape along the partition (12), and the other foot (22
b) is a locking window (13) when inserted into the main body (10).
The upper part is provided with a locking step (23a) in a portion conforming to a).
A locking claw (23) is provided so that the lower end is bent so as to gradually approach the one foot (22a) side.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a shoulder strap attachment for attaching a shoulder strap to a shoulder bag such as a school bag or a rucksack, and more particularly to a shoulder strap attachment for detachably attaching an upper end of a pair of shoulder straps to a central portion of an upper part of a backrest of the shoulder strap. It is about.

[0002] Since the backpack of a backpack is a part to which a large load is applied, it is usually firmly fixed to the back of the bag so that it cannot be removed. However, in recent years, the purpose has been to make it possible to use the bag as both a carrying bag and a carrying bag, to make it easy to replace the carrying bag when the carrying bag is damaged, and to expand the application range of fashion by changing the carrying bag appropriately. Attempts have been made to make this backpack removable.

[0003] Fig. 3 shows a conventionally known embodiment in which a backpack is made detachable. Eggplant rings 31a and 31b are attached to both ends of one backpack 30a. The bottom rings 32a and 32b with which the eggplant rings 31a and 31b are engaged are attached, and the upper ring 33 through which the back belt 30a passes is attached to the upper center of the back plate R1 of the bag body R. The back strap 30a engages the eggplant ring 31a at one end with one bottom ring 32a, passes the other end through the upper ring 33, and engages the eggplant ring 31b at the tip with the other bottom ring 32b. It is made to do.

However, the above-mentioned conventional method has a problem that one eggplant ring 31b has to be passed through the upper ring 33, and the operation of attaching and detaching the backpack 30a is complicated. Also, in this conventional method, the back strap 30a is supported substantially at one point by the upper ring 33, and the back strap 30a is folded back by the upper ring 33 as shown in the drawing. There is a problem that it becomes cramped when it is carried on the shoulder, and that the bag body R is not stable on the back.

[0005] Therefore, as a solution to the above problem, a device shown in FIG. 4 has been proposed. In this conventional example, eggplant rings 31a and 31b are attached to both ends of one backpack 30a, and bottom rings 32a and 32b with which the eggplant rings 31a and 31b are engaged are attached to the left and right sides of the bag body R. This is the same as the conventional example. A pair of triangular rings 33a and 33b are vertically stacked on the upper center of the back plate R1 of the bag body R, and two overlapping sides thereof are pivotally connected by mounting pieces 33c. Note that the lower triangular rings 33b are not allowed to rotate above the upper triangular ring 33a.

[0006] One method of wearing the backpack belt 30a in this conventional example will be described. First, the eggplant rings 31a, 31b at both ends of the backpack belt 30a are engaged with the bottom rings 32a, 32b first. Then, approximately the middle of the backpack 30a is folded in half, and the upper triangular ring 33a is caused to raise its lower part (the lower part is turned forward in FIG. 4). Insert inside. Next, both the upper triangular ring 33a and the lower triangular ring 33b are raised, and the lower triangular ring 33b is inserted into the back of the two-folded portion of the backpack belt 30a from the lower end side. Then, as shown in the figure, the central portion of the backpack 30a is held by the triangular rings 33a and 33b.

Therefore, in the conventional example shown in FIG. 4, the upper part of the backpack 30a is supported at approximately two points by two pairs of oblique sides of the two triangular rings 33a, 33b, so that the backrest is not cramped, It has the advantage that the body is stable on the back.

However, the conventional example shown in FIG. 4 has a problem that attaching and detaching the upper part of the back strap 30a to the two triangular rings 33a and 33b is unexpectedly complicated, and the two triangular rings 33a and 33b have a problem. The front ends of the triangular rings 33a and 33b, which have been moved up and down, are not in good shape, and have been moved up (the lower part is rotated in the forward direction in FIG. 4 so as to be substantially perpendicular to the back plate R1). In addition, there is a problem that the user may feel uncomfortable when hitting the back.

[0009]

[Problems to be solved by the invention]

 Therefore, the present invention has been made to solve the above-mentioned problem, and has as its object to provide a thin backpack attachment which can attach and detach the upper ends of a pair of backpacks with almost one touch.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the configuration of the present invention is to form a main body 10 to be attached to the bag main body R into a thin container shape having an opening 11 at an upper portion, and the inside of the main body 10 is divided into left and right body parts by a partition 12 in the central vertical direction. Partitions 10a and 10b are provided, and locking window holes 13a and 13a are provided in both side walls 13 and 13 of the main body 10, and are detachably inserted into the right and left body parts 10a and 10b through the upper opening 11 of the main body 10. The attachment frame 21 of the back strap 30 is provided on the upper part of the band attachment / detachment pieces 20, 20 made of a pair of flexible synthetic resin materials, and the forked branch insertion part 22 is provided on the lower part. The one-side foot piece 22a of the base 22 is formed into a straight rod shape along the partition wall 12, and the other-side foot piece 22b is locked when the forked branch insertion portion 22 is inserted into the main body 10 at a lower portion thereof. The upper part is engaged with the part that fits the window 13a. The widthwise outward projection L3 of the one foot 22a protrudes outward at the stepped portion 23a to be larger than the widthwise inner projection L2 of the partition wall 12 and the side wall 13, and the lower end side is the one foot 22a side. The locking claw 23 is provided so that the widthwise outer dimension L1 of the lower end and the one foot piece 22a is smaller than the widthwise inner dimension L2 of the partition wall 12 and the side wall 13. We have taken measures.

Therefore, the backpack strap mounting device of the present invention is fixed to the upper central portion of the back plate R 1 of the bag body R, the upper end of the backpack strap 30 is attached to the attachment frame 21 of the strap attaching / detaching piece 20, The insertion part 22 is inserted into the main body 10 (inside each of the body parts 10a and 10b of the main body 10). Then, the locking claw 23 of the other foot 22b is locked by the locking window 13a, and the upper end of each backpack 30 is connected to the bag body R.

To remove the backpack 30, the locking claw 23 locked in the locking window 13 a is pushed into the main body 10 with a finger. Then, since the locking of the locking claw portion 23 is detached, the back strap 30 can be detached from the bag main body R by pulling out the band attaching / detaching piece 20 from the main body 10.

According to the invention of claim 2, the main body 10 to be attached to the bag main body R is formed in a thin container shape having an opening 11 at an upper part, and the inside of the main body 10 is divided into left and right parts by a partition 12 in a central vertical direction. The main body 10 is partitioned into body parts 10a and 10b, and both side walls 13 and 13 of the main body 10 are provided with locking window holes 13a and 13a. Further, the locking window holes 13a and 13a of the front plate part 14 of the main body 10 are provided. 13a, a pair of flexible synthetic resin materials are provided which are provided with finger-hanging concave portions 15 and 15 which are curved inward in the portions adapted to 13a and which are removably inserted into the left and right body portions 10a and 10b through the upper opening 11 of the main body 10. Attachment frame 21 of back strap 30 is provided at the upper part of band attachment / detachment pieces 20, and bifurcated branch insertion part 22 is provided at the lower part. One side foot 22a of bifurcated branch insertion part 22 is attached to partition wall 12. It has a straight rod shape along At the lower part of the foot 22b, at the lower part thereof, when the forked branch insertion part 22 is inserted into the main body 10, the upper part of the part is fitted with the locking step hole 13a. The outer width L3 of the one-side foot piece 22a is larger than the inner width L2 of the partition wall 12 and the side wall 13, and the lower portion is bent so as to approach the one-side foot piece 22a sequentially. A locking claw portion 23 is provided in which the widthwise outer length L1 between the lower end and the one foot 22a is smaller than the widthwise inner length L2 between the partition wall 12 and the side wall 13, and the partition wall is further provided in the main body 10. A technical measure is provided in which opposing walls 16, 16 are provided on both sides of the front side 12 so that the lower portions of the one-side foot pieces 22a can be inserted therebetween.

Therefore, in addition to the above-described operation of the “claim 1”, the present invention's backpack strap mounting device is provided at a portion that fits into the locking window holes 13 a of the front plate portion 14 of the main body 10. Since the finger hook concave portions 15, 15 that are curved inward are provided, an effect is provided that when the locking claw portion 23 is pushed into the main body 10 when the band attaching / detaching piece 20 is attached / detached, the finger is easily hooked.

The main body 10 is provided with opposing walls 16, 16 on both sides of the partition wall 12, between which the lower portions of the one-side foot pieces 22 a can be inserted. Has the effect of resisting an external force that shifts its upper and lower sides in the left-right direction (FIG. 2).

According to a third aspect of the present invention, the main body 10 to be attached to the bag main body R is formed in a thin container shape having an opening 11 at an upper part, and the inside of the main body 10 is divided into left and right parts by a partition 12 in a central vertical direction. The main body 10 is partitioned into body parts 10a and 10b, and both side walls 13 and 13 of the main body 10 are provided with locking window holes 13a and 13a. Further, the locking window holes 13a and 13a of the front plate part 14 of the main body 10 are provided. 13a, a pair of flexible synthetic resin materials are provided which are provided with finger-hanging concave portions 15 and 15 which are curved inward in the portions adapted to 13a and which are removably inserted into the left and right body portions 10a and 10b through the upper opening 11 of the main body 10. An attachment frame 21 for a back strap 30 is provided on the upper part of the band detachable pieces 20, and a forked branch insertion part 22 is provided on a lower part thereof. When the book is inserted into the main body 10, the book Extending portions 24 that are in contact with the outer surface of the side wall 13 of the body 10 are respectively extended, and one foot 22a of the bifurcated branch insertion portion 22 is formed into a straight rod shape along the partition wall 12, and the other side is formed. When the fork 22b is inserted into the main body 10 at the lower part, the upper part of the foot piece 22b projects outward in a stepped manner at the locking step part 23a when the forked part 22 fits into the locking window hole 13a. The widthwise outer dimension L3 of the one foot piece 22a is larger than the widthwise inner dimension L2 of the partition wall 12 and the side wall 13, and the lower end is bent so as to approach the one foot piece 22a sequentially. A technical measure is adopted in which a locking claw portion 23 is provided in which the widthwise outer length L1 of the piece 22a is smaller than the widthwise inner length L2 of the partition wall 12 and the side wall 13.

Therefore, in the backpack strap attachment device of the present invention, the one-side foot piece 22a contacts the partition wall 12 and the extension portion 24 contacts the side wall 13, so that the band attachment / detachment piece 20 can be moved up and down in the same manner as described above. "FIG. 2" This exhibits an action against external force displaced in the left-right direction.

[0018]

[Embodiment of the invention]

 Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the figure, R is a bag main body, and R1 is a back plate that comes into contact with the back when carrying the bag main body R. The bag body R is assumed to be a school bag in the figure, but may be another bag such as a rucksack.

Reference numeral 10 denotes a main body of the back strap attaching device according to the present invention, which is attached to the bag main body R. The main body 10 is fixed to the center upper portion of the back plate R1 of the bag main body R by a conventionally known fixing means such as attaching with studs 50, 50.

The main body 10 is formed in a thin container shape having an opening 11 at an upper portion. The inside of the main body 10 is partitioned into left and right body parts 10 a and 10 b by a central vertical partition wall 12. The walls 13, 13 are provided with locking window holes 13a, 13a. That is, the main body 10 has a parallel front plate portion 14 and a rear plate portion 18 in which the gap is set to be relatively small in order to make the main body 10 thin, and both side surfaces 13, 13 connecting the front plate portion 14 and the rear plate portion 18 to each other. And an opening 11 is provided in the upper part.

In the illustrated embodiment, the main body 10 has a bottom portion 19, and the bottom portion 19 is provided with stud holes 17, 17, and the stud holes 17, 17 are provided with the studs 50, 50 (see FIG. 1) is inserted and attached to the bag body R. However, the positions of the attachment holes 50, 50 may be provided in other places that do not interfere with other mechanisms. Of course, other known fixing means may be used.

The partition 12 does not have to be provided in the main body from either the front plate portion 14 or the rear plate portion 18 to form a complete partition plate. The portion 14 and the back plate portion 18 are connected and provided, and are also used as reinforcing ribs of the main body 10.

Reference numerals 20, 20 denote a pair of band detachable pieces 20, 20 which are detachably inserted into the left and right body parts 10a, 10b from the upper opening 11 of the main body 10, respectively, and each of the band detachable pieces 20 is a flexible synthetic resin. An attachment frame portion 21 of the back strap 30 is provided at an upper portion, and a forked branch insertion portion 22 is provided at a lower portion.

The attachment frame portion 21 of the back strap 30 is provided with three cut grooves 21a, 21b, 21c in the illustrated example. Although not shown, the inside of each of the cut grooves 21a, 21b, 21c is formed by the back strap. 30 is sewn and folded back, and the amount of protrusion of the folded free end, in other words, the length of the backpack 30 can be adjusted. The upper end of the band 30 may be folded back through the cut groove 21a, and the folded and overlapped portion may be fixed by sewing or the like.

In the illustrated embodiment, the mounting frame portions 21 and 21 are inclined so that the horizontal direction in FIG. 2 is lowered downward, and as shown in FIG. The back straps 30 and 30 are sequentially spread toward the user's back when the bag body R is carried on the back so that the upper end thereof is inclined so that the upper end side faces outward. The mounting frame portion 21 is provided with a window hole 21d, and the window hole 21d is designed to use a space for inclining the mounting frame portion 21 as described above as a finger hook portion. When the attachment frame 21 is pulled out from the main body 10, a finger can be hooked on the window hole 21d.

Although not explicitly shown in the drawing, the mounting frame portion 21 is configured to be thicker than the inside thickness of the upper opening 11, and a bifurcated branch insertion portion 22 having a stepped thickness is provided below the mounting frame portion 21. The forked bifurcated insertion portion 22 is inserted into the main body 10 by a predetermined amount.

The one-side leg 22a of the forked branch insertion portion 22 is formed in a straight rod shape along the partition wall 12, and the other-side leg 22b is formed by connecting the forked branch insertion portion 22 to the main body 1 at the lower portion thereof. The upper part protrudes outward in a stepped manner with a locking step 23a at a position that fits into the locking window hole 13a when inserted into the partition window 0a. 12 and the side wall 13 are larger than the widthwise inner length L2, and the lower end side is bent so as to approach the one-side foot piece 22a side sequentially. And a locking claw portion 23 which is smaller than the widthwise inner length L2 between the inner wall and the side wall 13.

That is, the one-side foot piece 22a and the other-side foot piece 22b constitute a spring locking claw, and the one-side foot piece 22a is fixed to the fixed side, and the other-side foot piece 22b is connected to the spring arm side. It is made to become. Therefore, as the above-mentioned flexible synthetic resin material, a material having appropriate flexibility such as ABS resin can be used, but the one foot 22a on the fixed side is made thick, and furthermore, in the illustrated embodiment, it is reinforced. The wings 24 are connected to each other to reinforce them so that they are not easily deformed, and the other foot 22b, which is the spring arm side, is partially or thinly formed so as to have a large spring property. .

The one-side foot piece 22 a is formed in a straight bar shape along the partition 12 of the main body 10, and the forked branch insertion portion 22 is inserted into a predetermined position in the main body 10 by contacting the partition 12. It is made to be done.

The locking claw 23 of the other foot 22b is formed by engaging the stepped locking step 23a with the lower surface of the upper side 13b of the locking window 13a. The detachable piece 20 is prevented from falling off the main body 10. The locking claw portion 23 has an upper portion projecting outward in a stepped manner at a locking step portion 23a, and the widthwise outer dimension L3 (maximum width) of the protruding one-side foot piece 22a is determined by the partition wall. When it is inserted into the main body 10 so as to be larger than the widthwise internal length L2 of the inner wall 12 and the side wall 13, the one-side foot piece 22a is bent inward, and the locking step 23a is used for locking. When fitted to the window hole 13a, the locking claw portion 23 is pushed back into the locking window hole 13a by the spring force of the one foot 22a.

The locking step 23a may have a stepped rising surface that is horizontal in FIG. 2; however, in the present embodiment, the locking step 23a is inclined so that the outside faces upward, and conversely, The upper side of the window hole 13a is formed as an inclined surface which is directed downward as it goes inward so that the engagement is not easily released.

The locking claw 23 is bent so that the lower end thereof sequentially approaches the one-side foot 22 a side, and the widthwise outer length L 1 of the lower end and the one-side foot 22 a is determined by the partition wall 12 and the side wall 13. The width L2 is made smaller than the widthwise inner dimension L2, so that it can be easily inserted into the main body 10. In the illustrated embodiment, the one foot 22a is set to be long and the other foot 22b including the locking claw portion 23 is set short, and when the band attaching / detaching piece 20 is inserted into the main body 10, the one side is first set. The foot piece 22a is inserted, and then the lower end of the locking claw portion 23 is inserted, so that it is naturally guided to an appropriate position in the main body 10.

Next, in the invention of “Claim 2”, the main body 10 to be attached to the luggage main body R is formed in a thin container shape having an opening 11 at an upper part, and the inside of the main body 10 is divided into left and right sides by a central vertical partition 12. It is the same as described above that the body 10 is partitioned into body parts 10a and 10b, and the side walls 13 and 13 of the body 10 are provided with locking window holes 13a and 13a. The front plate portion 14 has finger-hanging concave portions 15, 15 which are curved inward at portions corresponding to the locking window holes 13 a, 13 a.

In other words, the locking claw 23 is pushed into the main body 10 with a finger to attach and detach the band attaching / detaching piece 20 inserted into the main body 10. The finger hanging recesses 15 and 15 are provided so as to be able to be pushed into a large area. In the illustrated embodiment, the finger catching recesses 15, 15 are also provided on the rear plate portion 18.

Further, the present invention is applied to the upper part of the band attaching / detaching pieces 20, 20 made of a pair of flexible synthetic resin materials which are detachably inserted into the left and right body parts 10 a, 10 b through the upper opening 11 of the main body 10. The attachment frame portion 21 of the backpack 30 and the forked branch insertion portion 22 provided at the lower portion are the same as in the first aspect.

Further, the one-side foot 22a of the forked branch insertion portion 22 is formed in a straight bar shape along the partition wall 12, and the other-side foot 22b is formed by connecting the forked branch insertion portion 22 at a lower portion thereof. The upper part of the portion that fits into the locking window hole 13a when inserted into the main body 10 protrudes outward in the form of a step at the locking stepped portion 23a, and the widthwise external method L3 with the one foot 22a is defined as the above. The width L2 of the partition 12 and the side wall 13 is larger than the widthwise inner length L2, and the lower portion is bent so as to sequentially approach the one-side foot 22a side. It is the same as in Claim 1 that a locking claw 23 that is smaller than the widthwise inner dimension L2 with the side wall 13 is provided.

In the present invention, opposing walls 16, 16 are provided in the main body 10 so as to oppose both sides of the partition wall 12 so that the lower portions of the one-side foot pieces 22 a can be inserted therebetween. . The opposing walls 16, 16 are for inserting one-side foot pieces 22a between the partition wall 12 and the one-side foot pieces 22a can be moved only in the vertical direction. When an external force that shifts the upper and lower sides in the left-right direction of FIG. 2 is applied, the external force prevents the other foot 22b from bending and the locking of the locking claw 23 from being detached.

Next, the invention of claim 3 is that the band detachable piece 20 is provided at the lower part of the band detachable pieces 20 instead of the opposed walls 16, 16 or together with the opposed walls 16, 16. The extension portions 24 that contact the outer surface of the side wall 13 of the main body 10 when inserted into the main body 10 are respectively extended. That is, since the one foot 22a is in contact with the partition wall 12 and the extending portion 24 is in contact with the outside of the side wall 13, an external force is applied to shift the band attachment / detachment piece 20 up and down as shown in FIG. In this case, the external force prevents the other foot 22b from bending and the locking of the locking claw 23 from being detached.

[0039]

[Effect of the invention]

 Since the present invention is as described above, it is possible to provide a backpack attachment capable of attaching / detaching the pair of backpacks 30, 30 by attaching / detaching the band attachment / detachment pieces 20, 20.

The band detachable pieces 20, 20 can be securely locked only by being inserted into the main body 10. When detaching, the band detachable pieces 20, 20 need only be pushed out by pushing the locking claw portion 23. It is possible to provide a good back strap attachment.

It should be noted that the backpacks 30 of the backpack are fixed at least at the upper ends thereof to the bag body R, and that the backpacks 30, 30 are sequentially widened toward the back. It is known that it is not cramped but desirable. However, in this case, since an external force in an oblique direction is applied in addition to the load in the vertical direction of the locking portion, the opposing wall 16 is provided in the device of the second aspect, and the extension portion is provided in the device of the third embodiment. 24 can provide a back strap attachment that can withstand this external force and that does not allow the locking claw 23 to move with excessive force to release the locking.

[Submission date] August 11, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents] [Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a shoulder strap attachment for attaching a shoulder strap to a shoulder bag such as a school bag or a rucksack, and more particularly to a shoulder strap attachment for detachably attaching an upper end of a pair of shoulder straps to a central portion of an upper part of a backrest of the shoulder strap. It is about.

[0002] Since the backpack of a backpack is a part to which a large load is applied, it is usually firmly fixed to the back of the bag so that it cannot be removed. However, in recent years, the purpose has been to make it possible to use the bag as both a carrying bag and a carrying bag, to make it easy to replace the carrying bag when the carrying bag is damaged, and to expand the application range of fashion by changing the carrying bag appropriately. Attempts have been made to make this backpack removable.

[0003] Fig. 3 shows a conventionally known embodiment in which a backpack is made detachable. Eggplant rings 31a and 31b are attached to both ends of one backpack 30a. The bottom rings 32a and 32b with which the eggplant rings 31a and 31b are engaged are attached, and the upper ring 33 through which the back belt 30a passes is attached to the upper center of the back plate R1 of the bag body R. The back strap 30a engages the eggplant ring 31a at one end with one bottom ring 32a, passes the other end through the upper ring 33, and engages the eggplant ring 31b at the tip with the other bottom ring 32b. It is made to do.

However, the above-mentioned conventional method has a problem that one eggplant ring 31b has to be passed through the upper ring 33, and the operation of attaching and detaching the backpack 30a is complicated. Also, in this conventional method, the back strap 30a is supported substantially at one point by the upper ring 33, and the back strap 30a is folded back by the upper ring 33 as shown in the drawing. There is a problem that it becomes cramped when it is carried on the shoulder, and that the bag body R is not stable on the back.

[0005] Therefore, as a solution to the above problem, a device shown in FIG. 4 has been proposed. In this conventional example, eggplant rings 31a and 31b are attached to both ends of one backpack 30a, and bottom rings 32a and 32b with which the eggplant rings 31a and 31b are engaged are attached to the left and right sides of the bag body R. This is the same as the conventional example. A pair of triangular rings 33a and 33b are vertically stacked on the upper center of the back plate R1 of the bag body R, and two overlapping sides thereof are pivotally connected by mounting pieces 33c. Note that the lower triangular ring 33b cannot be rotated above the upper triangular ring 33a.

[0006] One method of wearing the backpack belt 30a in this conventional example will be described. First, the eggplant rings 31a, 31b at both ends of the backpack belt 30a are engaged with the bottom rings 32a, 32b first. Then, approximately the middle of the backpack 30a is folded in half, and the upper triangular ring 33a is caused to raise its lower part (the lower part is turned forward in FIG. 4). Insert inside. Next, both the upper triangular ring 33a and the lower triangular ring 33b are raised, and the lower triangular ring 33b is inserted into the back of the two-folded portion of the backpack belt 30a from the lower end side. Then, as shown in the figure, the central portion of the backpack 30a is held by the triangular rings 33a and 33b.

Therefore, in the conventional example shown in FIG. 4, the upper part of the backpack 30a is supported at approximately two points by two pairs of oblique sides of the two triangular rings 33a, 33b, so that the backrest is not cramped, It has the advantage that the body is stable on the back.

However, the conventional example shown in FIG. 4 has a problem that attaching and detaching the upper part of the back strap 30a to the two triangular rings 33a and 33b is unexpectedly complicated, and the two triangular rings 33a and 33b have a problem. The front ends of the triangular rings 33a and 33b, which have been moved up and down, are not in good shape, and have been moved up (the lower part is rotated in the forward direction in FIG. 4 so as to be substantially perpendicular to the back plate R1). In addition, there is a problem that the user may feel uncomfortable when hitting the back.

[0009]

[Problems to be solved by the invention]

 Therefore, the present invention has been made to solve the above-mentioned problem, and has as its object to provide a thin backpack attachment which can attach and detach the upper ends of a pair of backpacks with almost one touch.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the configuration of the present invention is to form a main body 10 to be attached to the bag main body R into a thin container shape having an opening 11 at an upper portion, and the inside of the main body 10 is divided into left and right body parts by a partition 12 in the central vertical direction. Partitions 10a and 10b are provided, and locking window holes 13a and 13a are provided in both side walls 13 and 13 of the main body 10, and are detachably inserted into the right and left body parts 10a and 10b through the upper opening 11 of the main body 10. The attachment frame 21 of the back strap 30 is provided on the upper part of the band attachment / detachment pieces 20, 20 made of a pair of flexible synthetic resin materials, and the forked branch insertion part 22 is provided on the lower part. The one-side foot 22a of the fork 22 is formed in a straight rod shape along the partition wall 12, and the other-side foot 22b of the fork branch insertion part 22 is provided with the fork branch insertion part 22 at a lower portion thereof. 10 fits into the locking window hole 13a The upper portion protrudes outward in a stepped manner at the locking step portion 23a, and the widthwise outer length L3 of the one foot 22a becomes larger than the widthwise inner length L2 of the partition wall 12 and the side wall 13. The lower end is bent so as to sequentially approach the one-side foot piece 22a, and the outer width L1 between the lower end and the one foot 22a is smaller than the inner width L2 between the partition wall 12 and the side wall 13. The technical means provided with the claw part 23 was taken.

Therefore, the backpack strap mounting device of the present invention is fixed to the upper central portion of the back plate R 1 of the bag body R, the upper end of the backpack strap 30 is attached to the attachment frame 21 of the strap attaching / detaching piece 20, The insertion part 22 is inserted into the main body 10 (inside each of the body parts 10a and 10b of the main body 10). Then, the locking claw 23 of the other foot 22b is locked by the locking window 13a, and the upper end of each backpack 30 is connected to the bag body R.

To remove the backpack 30, the locking claw 23 locked in the locking window 13 a is pushed into the main body 10 with a finger. Then, since the locking of the locking claw portion 23 is detached, the back strap 30 can be detached from the bag main body R by pulling out the band attaching / detaching piece 20 from the main body 10.

According to the invention of claim 2, the main body 10 to be attached to the bag main body R is formed in a thin container shape having an opening 11 at an upper part, and the inside of the main body 10 is divided into left and right parts by a partition 12 in a central vertical direction. The main body 10 is partitioned into body parts 10a and 10b, and both side walls 13 and 13 of the main body 10 are provided with locking window holes 13a and 13a. Further, the locking window holes 13a and 13a of the front plate part 14 of the main body 10 are provided. 13a, a pair of flexible synthetic resin materials are provided which are provided with finger-hanging concave portions 15 and 15 which are curved inward in the portions adapted to 13a and which are removably inserted into the left and right body portions 10a and 10b through the upper opening 11 of the main body 10. Attachment frame 21 of back strap 30 is provided at the upper part of band attachment / detachment pieces 20, and bifurcated branch insertion part 22 is provided at the lower part. One side foot 22a of bifurcated branch insertion part 22 is attached to partition wall 12. It has a straight rod shape along The lower leg portion 22b of the forked branch insertion portion 22 has a lower portion, which has an upper portion at a portion adapted to the locking window hole 13a when the forked branch insertion portion 22 is inserted into the main body 10. The locking step 23a protrudes outward in a stepwise manner so that the widthwise outer length L3 of the one foot 22a is larger than the widthwise inner length L2 of the partition wall 12 and the side wall 13, and the lower portion is one side foot 22a. A locking claw portion 23 is formed, which is bent so as to approach the side sequentially, so that the widthwise outer dimension L1 between the lower end thereof and the one foot piece 22a is smaller than the widthwise inner dimension L2 between the partition wall 12 and the side wall 13. In the main body 10, technical means is provided in which opposing walls 16, 16 are provided on both sides of the partition wall 12 and between which the lower portions of the one-side foot pieces 22a can be inserted. is there.

Therefore, in addition to the above-described operation of the “claim 1”, the present invention's backpack strap mounting device is provided at a portion that fits into the locking window holes 13 a of the front plate portion 14 of the main body 10. Since the finger hook concave portions 15, 15 that are curved inward are provided, an effect is provided that when the locking claw portion 23 is pushed into the main body 10 when the band attaching / detaching piece 20 is attached / detached, the finger is easily hooked.

The main body 10 is provided with opposing walls 16, 16 on both sides of the partition wall 12, between which the lower portions of the one-side foot pieces 22 a can be inserted. Has the effect of resisting an external force that shifts its upper and lower sides in the left-right direction (FIG. 2).

According to a third aspect of the present invention, the main body 10 to be attached to the bag main body R is formed in a thin container shape having an opening 11 at an upper part, and the inside of the main body 10 is divided into left and right parts by a partition 12 in a central vertical direction. The main body 10 is partitioned into body parts 10a and 10b, and both side walls 13 and 13 of the main body 10 are provided with locking window holes 13a and 13a. Further, the locking window holes 13a and 13a of the front plate part 14 of the main body 10 are provided. 13a, a pair of flexible synthetic resin materials are provided which are provided with finger-hanging concave portions 15 and 15 which are curved inward in the portions adapted to 13a and which are removably inserted into the left and right body portions 10a and 10b through the upper opening 11 of the main body 10. An attachment frame 21 for a back strap 30 is provided on the upper part of the band detachable pieces 20, and a forked branch insertion part 22 is provided on a lower part thereof. When the book is inserted into the main body 10, the book Extending portions 24 that are in contact with the outer surface of the side wall 13 of the body 10 are respectively extended, and one side foot 22a of the forked branch insertion portion 22 is formed in a straight rod shape along the partition wall 12, and the forked branch is formed. The other foot 22b of the insertion portion 22 has a lower portion with a locking step at the lower portion where the forked branch insertion portion 22 fits the locking window hole 13a when the forked branch insertion portion 22 is inserted into the main body 10. 23a, the widthwise outer dimension L3 of the one foot 22a protruding outward in the width direction is larger than the widthwise inner dimension L2 of the partition wall 12 and the side wall 13, and the lower end is sequentially positioned on the one foot 22a. A technical means provided with a locking claw portion 23 which is bent so as to approach so that the widthwise outer dimension L1 of the lower end thereof and the one foot 22a is smaller than the widthwise inner dimension L2 of the partition wall 12 and the side wall 13 is provided. It was taken.

Therefore, in the backpack strap attachment device of the present invention, the one-side foot piece 22a contacts the partition wall 12 and the extension portion 24 contacts the side wall 13, so that the band attachment / detachment piece 20 can be moved up and down in the same manner as described above. "FIG. 2" This exhibits an action against external force displaced in the left-right direction.

[0018]

[Embodiment of the invention]

 Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the figure, R is a bag main body, and R1 is a back plate that comes into contact with the back when carrying the bag main body R. The bag body R is assumed to be a school bag in the figure, but may be another bag such as a rucksack.

Reference numeral 10 denotes a main body of the back strap attaching device according to the present invention, which is attached to the bag main body R. The main body 10 is fixed to the center upper portion of the back plate R1 of the bag main body R by a conventionally known fixing means such as attaching with studs 50, 50.

The main body 10 is formed in a thin container shape having an opening 11 at an upper portion. The inside of the main body 10 is partitioned into left and right body parts 10 a and 10 b by a central vertical partition wall 12. The walls 13, 13 are provided with locking window holes 13a, 13a. That is, the main body 10 has a parallel front plate portion 14 and a rear plate portion 18 in which the gap is set to be relatively small in order to make the main body 10 thin, and both side surfaces 13, 13 connecting the front plate portion 14 and the rear plate portion 18 to each other. And an opening 11 is provided in the upper part.

In the illustrated embodiment, the main body 10 has a bottom portion 19, and the bottom portion 19 is provided with stud holes 17, 17, and the stud holes 17, 17 are provided with the studs 50, 50 (see FIG. 1) is inserted and attached to the bag body R. However, the positions of the attachment holes 50, 50 may be provided in other places that do not interfere with other mechanisms. Of course, other known fixing means may be used.

The partition 12 does not have to be provided in the main body from either the front plate portion 14 or the rear plate portion 18 to form a complete partition plate. The portion 14 and the back plate portion 18 are connected and provided, and are also used as reinforcing ribs of the main body 10.

Reference numerals 20, 20 denote a pair of band detachable pieces 20, 20 which are detachably inserted into the left and right body parts 10a, 10b from the upper opening 11 of the main body 10, respectively, and each of the band detachable pieces 20 is a flexible synthetic resin. An attachment frame portion 21 of the back strap 30 is provided at an upper portion, and a forked branch insertion portion 22 is provided at a lower portion.

The attachment frame portion 21 of the back strap 30 is provided with three cut grooves 21a, 21b, 21c in the illustrated example. Although not shown, the inside of each of the cut grooves 21a, 21b, 21c is formed by the back strap. 30 is sewn and folded back, and the amount of protrusion of the folded free end, in other words, the length of the backpack 30 can be adjusted. The upper end of the band 30 may be folded back through the cut groove 21a, and the folded and overlapped portion may be fixed by sewing or the like.

In the illustrated embodiment, the mounting frame portions 21 and 21 are inclined so that the horizontal direction in FIG. 2 is lowered downward, and as shown in FIG. The back straps 30 and 30 are sequentially spread toward the user's back when the bag body R is carried on the back so that the upper end thereof is inclined so that the upper end side faces outward. The mounting frame portion 21 is provided with a window hole 21d, and the window hole 21d is designed to use a space for inclining the mounting frame portion 21 as described above as a finger hook portion. When the attachment frame 21 is pulled out from the main body 10, a finger can be hooked on the window hole 21d.

Although not explicitly shown in the drawing, the mounting frame portion 21 is configured to be thicker than the inside thickness of the upper opening 11, and a bifurcated branch insertion portion 22 having a stepped thickness is provided below the mounting frame portion 21. The forked bifurcated insertion portion 22 is inserted into the main body 10 by a predetermined amount.

The one-side foot 22a of the fork branch insertion portion 22 is formed in a straight rod shape along the partition wall 12, and the other-side foot 22b of the fork branch insertion portion 22 has a lower portion formed by the two legs. When the branch insertion portion 22 is inserted into the main body 10, the upper portion protrudes outward in a stepped manner with the locking stepped portion 23 a when the branch insertion portion 22 is inserted into the main body 10. The outward direction L3 becomes larger than the widthwise inner direction L2 between the partition wall 12 and the side wall 13, and the lower end is bent so as to approach the one-side foot 22a side sequentially, and the outer side in the width direction between the lower end and the one-side foot 22a. The locking claws 23 are provided so that the method L1 is smaller than the widthwise inner method L2 between the partition wall 12 and the side wall 13.

That is, the one-side foot piece 22a and the other-side foot piece 22b constitute a spring locking claw, and the one-side foot piece 22a is fixed to the fixed side, and the other-side foot piece 22b is connected to the spring arm side. It is made to become. Therefore, as the above-mentioned flexible synthetic resin material, a material having appropriate flexibility such as ABS resin can be used, but the one foot 22a on the fixed side is made thick, and furthermore, in the illustrated embodiment, it is reinforced. The wings 24 are connected to each other to reinforce them so that they are not easily deformed, and the other foot 22b, which is the spring arm side, is partially or thinly formed so as to have a large spring property. .

The one-side foot piece 22 a is formed in a straight rod shape along the partition 12 of the main body 10, and the bifurcated branch insertion portion 22 is inserted into a predetermined position in the main body 10 by being in contact with the partition 12. It is made to be inserted.

The locking claw 23 of the other foot 22b is formed by engaging the stepped locking step 23a with the lower surface of the upper side 13b of the locking window 13a. The detachable piece 20 is prevented from falling off the main body 10. The locking claw portion 23 has an upper portion projecting outward in a stepped manner at a locking step portion 23a, and the widthwise outer dimension L3 (maximum width) of the protruding one-side foot piece 22a is determined by the partition wall. When it is inserted into the main body 10 so as to be larger than the widthwise internal length L2 of the inner wall 12 and the side wall 13, the one-side foot piece 22a is bent inward, and the locking step 23a is used for locking. When fitted to the window hole 13a, the locking claw portion 23 is pushed back into the locking window hole 13a by the spring force of the one foot 22a.

The locking step 23a may have a stepped rising surface that is horizontal in FIG. 2; however, in the present embodiment, the locking step 23a is inclined so that the outside faces upward, and conversely, The upper side of the window hole 13a is formed as an inclined surface which is directed downward as it goes inward so that the engagement is not easily released.

The locking claw 23 is bent so that the lower end thereof sequentially approaches the one-side foot 22 a side, and the widthwise outer length L 1 of the lower end and the one-side foot 22 a is determined by the partition wall 12 and the side wall 13. The width L2 is made smaller than the widthwise inner dimension L2, so that it can be easily inserted into the main body 10. In the illustrated embodiment, the one foot 22a is set to be long and the other foot 22b including the locking claw portion 23 is set short, and when the band attaching / detaching piece 20 is inserted into the main body 10, the one side is first set. The foot 22a is inserted, and then the lower end of the locking claw 23 is inserted, so that it is naturally guided to an appropriate position in the main body 10.

Next, in the invention of “Claim 2”, the main body 10 to be attached to the luggage main body R is formed in a thin container shape having an opening 11 at an upper part, and the inside of the main body 10 is divided into left and right sides by a central vertical partition 12. It is the same as described above that the body 10 is partitioned into body parts 10a and 10b, and the side walls 13 and 13 of the body 10 are provided with locking window holes 13a and 13a. The front plate portion 14 has finger-hanging concave portions 15, 15 which are curved inward at portions corresponding to the locking window holes 13 a, 13 a.

In other words, the locking claw 23 is pushed into the main body 10 with a finger to attach and detach the band attaching / detaching piece 20 inserted into the main body 10. The finger hanging recesses 15 and 15 are provided so as to be able to be pushed into a large area. In the illustrated embodiment, the finger catching recesses 15, 15 are also provided on the rear plate portion 18.

Further, the present invention is applied to the upper part of the band attaching / detaching pieces 20, 20 made of a pair of flexible synthetic resin materials which are detachably inserted into the left and right body parts 10 a, 10 b through the upper opening 11 of the main body 10. The attachment frame portion 21 of the backpack 30 and the forked branch insertion portion 22 provided at the lower portion are the same as in the first aspect.

Further, the one leg 22a of the forked branch insertion portion 22 is formed in a straight rod shape along the partition wall 12, and the other foot 22b of the forked branch insertion portion 22 is formed at a lower portion thereof. When the bifurcated branch insertion portion 22 is inserted into the main body 10, a portion that fits into the locking window hole 13 a has an upper portion projecting outward in a stepped manner with a locking step portion 23 a, and the one side foot 22 a is formed. The widthwise outer method L3 is larger than the widthwise inner method L2 between the partition wall 12 and the side wall 13, and the lower portion is bent so as to approach the one-side foot piece 22a side by side, and the width direction between the lower end thereof and the one-side foot piece 22a. It is the same as in claim 1 that the outer projection L1 is provided with a locking claw 23 which is smaller than the inner projection L2 in the width direction of the partition wall 12 and the side wall 13.

In the present invention, opposing walls 16, 16 are provided in the main body 10 so as to oppose both sides of the partition wall 12 so that the lower portions of the one-side foot pieces 22 a can be inserted therebetween. . The opposing walls 16, 16 are for inserting one-side foot pieces 22a between the partition wall 12 and the one-side foot pieces 22a can be moved only in the vertical direction. When an external force that shifts the upper and lower sides in the left-right direction of FIG. 2 is applied, the external force prevents the other foot 22b from bending and the locking of the locking claw 23 from being detached.

Next, the invention of claim 3 is that the band detachable piece 20 is provided at the lower part of the band detachable pieces 20 instead of the opposed walls 16, 16 or together with the opposed walls 16, 16. The extension portions 24 that contact the outer surface of the side wall 13 of the main body 10 when inserted into the main body 10 are respectively extended. That is, since the one foot 22a is in contact with the partition wall 12 and the extending portion 24 is in contact with the outside of the side wall 13, an external force is applied to shift the band attachment / detachment piece 20 up and down as shown in FIG. In this case, the external force prevents the other foot 22b from bending and the locking of the locking claw 23 from being detached.

[0039]

[Effect of the invention]

 Since the present invention is as described above, it is possible to provide a backpack attachment capable of attaching / detaching the pair of backpacks 30, 30 by attaching / detaching the band attachment / detachment pieces 20, 20.

The band detachable pieces 20, 20 can be securely locked only by being inserted into the main body 10. When detaching, the band detachable pieces 20, 20 need only be pushed out by pushing the locking claw portion 23. It is possible to provide a good back strap attachment.

It should be noted that the backpacks 30 of the backpack are fixed at least at the upper ends thereof to the bag body R, and that the backpacks 30, 30 are sequentially widened toward the back. It is known that it is not cramped but desirable. However, in this case, since an external force in an oblique direction is applied in addition to the load in the vertical direction of the locking portion, the opposing wall 16 is provided in the device of the second aspect, and the extension portion is provided in the device of the third embodiment. 24 can provide a back strap attachment that can withstand this external force and that does not allow the locking claw 23 to move with excessive force to release the locking.

[Brief description of the drawings]

FIG. 1 is a partially omitted rear view of a backpack to which a backpack attachment of the present invention is attached.

FIG. 2 is a right half sectional front view showing an embodiment of the backpack strap attachment of the present invention.

FIG. 3 is a partially omitted rear view of a backpack to which a conventional backpack attachment is attached.

FIG. 4 is a partially omitted rear view of a backpack to which another conventional backpack attachment is attached.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Main body 10a Container part 10b Container part 11 Opening 12 Partition wall 13 Side wall 13a Locking window hole 14 Front plate part 15 Finger hooking concave part 16 Opposing wall 20 Band detachable piece 21 Mounting frame part 22 Forked branch insertion part 22a One foot piece 22b Other foot piece 23a Locking step 23 Locking claw 24 Extended part L1 Width outer method L2 Width inner method L3 Width outer method R Bag body

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[Procedure amendment]

[Submission date] August 11, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Name of the device]

[Utility model registration claims]

[Brief description of the drawings]

FIG. 1 is a partially omitted rear view of a backpack to which a backpack attachment of the present invention is attached.

FIG. 2 is a right half sectional front view showing an embodiment of the backpack strap attachment of the present invention.

FIG. 3 is a partially omitted rear view of a backpack to which a conventional backpack attachment is attached.

FIG. 4 is a partially omitted rear view of a backpack to which another conventional backpack attachment is attached.

DESCRIPTION OF SYMBOLS 10 Main body 10a Body part 10b Body part 11 Opening 12 Partition wall 13 Side wall 13a Locking window hole 14 Front plate part 15 Finger recessed part 16 Opposing wall 20 Band detachable piece 21 Mounting frame part 22 Forked branch insertion part 22a One side foot piece 22b The other side foot piece 23a Locking step portion 23 Locking claw portion 24 Extended portion L1 Width outside method L2 Width direction inside method L3 Width direction outside method R Bag body

Claims (3)

[Utility model registration claims] 1. A main body (10) to be attached to a bag main body (R) is formed in a thin container shape having an opening (11) in an upper part, and the inside of the main body (10) is separated by a central vertical partition (12). Partitions into container parts (10a, 10b), and locking window holes (13a, 13) in both side walls (13, 13) of the main body (10).
a), and a pair of strip attaching / detaching pieces (20, 20) made of a pair of flexible synthetic resin materials removably inserted into the left and right body parts (10a, 10b) through the upper opening (11) of the main body (10). ), An attachment frame portion (21) of the backpack (30) is provided at an upper portion, and a forked branch insertion portion (22) is provided at a lower portion, and one side foot (22a) of the forked branch insertion portion (22) is provided. Is formed in a straight rod shape along the partition wall (12), and when the forked branch insertion part (22) is inserted into the main body (10) at the lower part of the other foot piece (22b), The upper part is provided with a locking step (23) at a position corresponding to the stop window (13a).
In the step (a), the widthwise outward projection (L3) of the one foot piece (22a) protruding outward in a step-like manner is achieved by the partition wall (12) and the side wall (13).
And the lower end side is bent so as to gradually approach the one-side foot piece (22a) side, and the width-direction outer method (L1) between the lower end and the one-side foot piece (22a) is larger than the above. A carrying strap attachment provided with a locking claw (23) smaller than the widthwise inner dimension (L2) between the partition wall (12) and the side wall (13). 2. A main body (10) to be attached to a bag main body (R) is formed in a thin container shape having an opening (11) in an upper part, and the inside of the main body (10) is left and right by a central vertical partition (12). Partitions into container parts (10a, 10b), and locking window holes (13a, 13) in both side walls (13, 13) of the main body (10).
a), and a front plate (1) of the main body (10).
4) Inwardly curved finger hook concave portions (15, 15) are provided at portions corresponding to the locking window holes (13a, 13a), and left and right body portions (10a) are opened from the upper opening (11) of the main body (10). , 10b), a frame (21) for attaching a back strap (30) and a bifurcated portion at the bottom are formed on a pair of detachable pieces (20, 20) made of a flexible synthetic resin material which are detachably inserted into the respective sections. Each of the branch insertion portions (22) is provided, and one foot (22a) of the bifurcated branch insertion portion (22) is formed in a straight bar shape along the partition (12), and the other foot is formed. (22b) has a lower stepped portion (2b) at a lower portion thereof which is adapted to the locking window (13a) when the forked branch insertion portion (22) is inserted into the main body (10).
3a), the widthwise outward projection (L3) of the one foot piece (22a) is stepped outward in the width direction (L3), and the partition wall (12) and the side wall (1).
3), the lower end is bent so as to approach the one-side foot piece (22a) side sequentially, and the width-direction outer method (L1) between the lower end and the one-side foot piece (22a). Is the inner widthwise method (L
2) Providing a smaller locking claw portion (23); furthermore, the lower part of each one-side foot piece (22a) is inserted into the main body (10) while opposing both sides of the partition wall (12). Backing band mounting tool provided with opposing walls (16, 16). 3. A main body (10) to be attached to the bag main body (R) is formed in a thin container shape having an opening (11) at an upper portion, and the inside of the main body (10) is divided into left and right sides by a central vertical partition (12). Partitions into container parts (10a, 10b), and locking window holes (13a, 13) in both side walls (13, 13) of the main body (10).
a), and a front plate (1) of the main body (10).
4) Inwardly curved finger hook concave portions (15, 15) are provided at portions corresponding to the locking window holes (13a, 13a), and left and right body portions (10a) are opened from the upper opening (11) of the main body (10). , 10b), a frame (21) for attaching a back strap (30) and a bifurcated portion at the bottom are formed on a pair of detachable pieces (20, 20) made of a flexible synthetic resin material which are detachably inserted into the respective sections. A branch insertion portion (22) is provided, respectively. Further, a lower portion of the both band detachable pieces (20) is provided with a side wall of the body (10) when the band detachable piece (20) is inserted into the body (10). Extension (24) in contact with the outer surface of (13)
Each of the bifurcated branch insertion portions (22) is configured such that one foot (22a) of the bifurcated branch insertion portion (22) has a straight rod shape along the partition (12), and the other foot (22b) has At the lower part, when the bifurcated branch insertion part (22) is inserted into the main body (10), the upper part of the part that fits the locking window (13a) has a locking step (2).
3a), the widthwise outward projection (L3) of the one foot piece (22a) is stepped outwardly in the width direction (L3) to form the partition wall (12) and the side wall (1).
3) is larger than the widthwise inner method (L2), and the lower end is bent so as to gradually approach the one-side foot piece (22a) side, and the widthwise outer method (L1) of the lower end and the one-side foot piece (22a). Is the widthwise method (L) of the partition wall (12) and the side wall (13).
2) A shoulder strap attachment provided with a smaller locking claw portion (23).