JPH0436653Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field of the Present Invention> The present invention relates to a buckle molded in one piece from plastic that releasably locks an insert such as a belt.

<Prior art and its drawbacks> (Figures 11 and 12) Conventionally, for example, in bags, sports bags, shoes, etc., in order to close the lid of the bag to the main body of the bag, a device has been fixed to the lid of the bag, etc. A method is used in which the tip of the belt is inserted and locked into a buckle fixed to the main body of a bag or the like.

FIGS. 11a and 11b show conventional examples of this type.

That is, in these figures, 1 is a plastic belt, on one side of which is provided with a sawtooth-shaped locking groove 2 that becomes deeper toward the tip 1a side, and with a locking hole 3 at one end that can be used to hold a bag, etc. It is fixed to a lid part 4a of a sports bag, shoes, etc. with a fastener 5.

6 is a metal buckle for inserting and locking the belt 1, and side plates 7 are provided on both sides of the bottom plate 7c of the main body 7.
a, 7b are erected, and a shaft 8 is mounted on these side plates 7a, 7b.
is constructed, and a rotary lid 9 is rotatably attached to this shaft 8. This rotating lid 9 is biased by a spring 10 wound around the shaft 8 to rotate in a direction in which a claw portion 9a at one end contacts the bottom plate 7c.

This buckle 6 can be attached to a bag, sports bag,
It is fixed to a body 4b of a shoe or the like with a fastener 12.

Therefore, as shown in FIG. 11b, when the lid part 4a is closed and the belt 1 is inserted into the buckle 6 from the tip 1a, it will come into contact with the claw part 9a at one end of the rotating lid 9, and the spring 10 will be attached. It enters while pushing up the claw portion 9a side against the force, and is locked by the claw portion 9a in any locking groove 2 of the belt 1, and the belt 1 becomes unable to retreat.

To remove belt 1 from buckle 6,
Push the other end 9b of the rotating lid 9 against the biasing force of the spring 10 as shown by the arrow in FIG.
Release the lock between a and the locking groove 2 and pull out the belt 1.

However, since the above-mentioned buckle 6 is made of metal, the number of component parts is large, the assembly work is complicated and time-consuming, and the cost is high.
Also, since it is metal, it rusts, and you cannot choose your favorite color, among other drawbacks.

In addition, with this buckle 6, in order to pull out the belt 1, the rotating lid 9 is pushed from the surface side of the buckle 6.
If your bag, sports bag, shoes, etc. are soft,
The operation of removing the belt 1 was troublesome because the bag, sports bag, and shoes themselves were dented.

Furthermore, since the rotary lid 9 is pushed from the front side of the buckle 6, there is a drawback that if an external force is applied to the front side of the buckle 6, for example in a crowded train, the belt 1 may come off without permission.

FIG. 12 shows another conventional example of this type of buckle. In FIG. 12, numeral 13 is a buckle integrally molded from plastic.

The buckle 13 of this conventional example has an insertion hole 14, and a locking claw 1 extends from the bottom wall portion 13a to the upper surface near the tip.
A locking piece 15 having a shape 5a is provided to protrude at an angle toward the front wall portion 13b. Then, from the tip of the locking piece 15, as shown in FIG. 12b, the locking piece 15
Operation protrusions 16 having a U-shaped cross section are provided to protrude upward on both sides in the width direction of the buckle 13, and cutouts 1 provided above both side walls 13c, 13c of the buckle 13 are provided.
It is exposed upwards from 7 and 17.

Therefore, as shown in FIG. 12c, when the belt 1 is inserted into the insertion hole 14 with its locking groove 2 facing downward, the locking piece 15 of the buckle 13 is pushed down against its elastic restoring force. The locking pawl 15a is locked in any locking groove 2 of the belt 1, and the belt 1
will be unable to leave.

To remove the belt 1 from the buckle 13, push the operating protrusion 16 from the front wall 13b side of the buckle 13 toward the bottom wall 13a of the buckle 13 against the elasticity of the locking piece 15 to lock it. The locking claw 15a of the piece 15 and the locking groove 2 of the belt 1 are released, and the belt 1 is pulled out from the insertion hole 14.

Since the buckle 13 is made of integrally molded plastic, the cost is low and it can be selected in any color of your choice.

However, in this buckle 13, the locking piece 15 extends from the bottom wall 13a of the buckle 13 to the front wall 1.
Since the buckle 13 is protruded toward the 3b side, the bulk of the buckle 13 becomes high, which has the disadvantage that it protrudes from the mounting surface of a bag, sports bag, shoes, etc. by that amount.

Also, for the same reason, belt 1 is buckle 13.
Since the main body 4 of the bag, sports bag, shoes, etc.
There was a drawback in that b and the lid part 4a could not be closed tightly.

Also, in this buckle 13, the belt 1 is pulled out by pressing the operating protrusion 16 from the front wall 13b side of the buckle 13 toward the main body 4b side, so if the bag, sports bag, shoes, etc. Because of the dent, it is troublesome to pull out the belt 1, and there is also the disadvantage that external force is applied to the front surface of the buckle 13, causing the belt 1 to come off without permission.

In addition, in the buckle 13 in FIG. 12, the belt 1
can move up and down (as shown in Figure 12) within the insertion hole, so the belt 1 swings around and the belt 1 is moved by an external force.
There was a drawback that when the belt 1 was pushed downward, the belt 1 would loosen or come off.

<Purpose of the present invention> The present invention corrects these drawbacks and does not become bulky.
In addition, the inserts such as belts are tightly secured to the bottom wall without wobbling, and
The object of the present invention is to provide a buckle integrally molded from plastic that can be reliably released from the locked state and will not loosen or come off due to external force.

<Embodiments of the present invention> (Figures 1 to 8) Hereinafter, embodiments of the present invention will be described based on the drawings.

1 to 8 show an embodiment of the present invention.

In the figure, reference numeral 20 denotes a buckle integrally molded from plastic, which is composed of opposing parallel bottom wall portions 21, a locking plate portion 22, a crosspiece portion 23, and opposing parallel side wall portions 24, 24. The insertion hole 25 is provided with a hole 25.

Countersinks 21a are provided at both ends of the bottom wall portion 21 in the longitudinal direction.
21a is provided, and mounting holes 26, 26 are provided in the countersunk holes 21a, 21a.

Both ends of the side wall portion 24 excluding the center portion 24a in the longitudinal direction are thick portions 24b and 24c whose width and height are set larger than that of the center portion 24a, and one of the thick portions 24b and 24b has a The other thick part 24
Operation parts 27, 27 are provided to protrude toward c, 24c.

The operating parts 27, 27 include thin, elastically deformable plate parts 27a, 27a, and abutting parts 27b, 27b that protrude inward at their tips and have tapered parts 27b', 27b' at their inner upper ends. ing. The lower end surface 27b'' of this contact portion 27b is set at the same height as the upper end surface 24a' of the central portion 24a of the side wall portion 24, or at a slightly higher position.

Ribs 2 are provided on the inner walls of the opposing side walls 24, 24.
Guide grooves 8 and 28 are protrudingly provided between the ribs 28 and the bottom wall 21 for holding and guiding the flat plate-shaped both ends 43 and 43 of the belt 41 inserted into the insertion hole 25. 29, 29 are formed. The upper end surfaces of these ribs 28, 28 are connected to the side wall portion 2.
4, 24 center portions 24a, upper end surfaces 24 of 24a
a', 24a', and the distance between the lower end surfaces of the ribs 28, 28 and the bottom wall portion 21 is set to be slightly larger than the thickness of the side end portion 43 of the belt 41.

The locking plate portion 22 is connected to the upper end of the thick wall portions 24b, 24b of the side wall portions 24, 24, and
3 are continuously provided from the upper ends of the thick portions 24c, 24c.

As shown in FIGS. 4 and 5, on the back surface of the tip of the locking plate portion 22, it is locked in a serrated ratchet type locking groove 42 (shown in FIGS. 6 and 7) of the belt 41. A locking pawl 22a is provided that projects toward the base. The distance between the tip 22a' of the locking pawl 22a and the bottom wall 21 is the distance between the inner part 42a of the locking groove 42 of the belt 41 to be inserted and the lower surface 41a of the belt 41.
The distance is set slightly larger than the distance between the

Further, as shown in FIGS. 4 and 5, a base portion 22b having tapered portions 22b' on both sides protrudes from both widthwise ends of the back surface of the front end side of the locking plate portion 22. As shown in FIGS.

<Operation of the above embodiment> As shown in FIG. 7b, the buckle 20 is attached to the main body 44b of a bag, sports bag, shoe, etc. using fixing devices 45, 45 through the attachment holes 26, 26 of the bottom wall 21. Fix it. Also, place the belt 41 with the locking groove 42 side facing up and attach it to the mounting hole 4 at one end.
At steps 6 and 46, it is fixed to the lid 44a of a bag, sports bag, shoe, etc. using fixing devices 47, 47.

Buckle 20 from the tip 41b of the belt 41
The both ends 43, 4 of the belt 41 are inserted into the insertion hole 25 of
3 into the guide grooves 29, 29, the back surface 41a of the belt 41 is in contact with the bottom wall 20a of the buckle 20, and the top surface is in contact with the locking piece 22.
The belt 41 is inserted into contact with the locking pawl 22a of the belt 41, pushing up the locking piece 22, and as shown in FIGS. Return is prevented. Therefore, if the belt 41 is pushed in until the lid part 44a is fully closed to the main body 44b, the belt 41 and the buckle 20
As a result, the lid portion 44a is maintained in a sufficiently closed state.

In order to loosen or pull out the belt 41, the contact portions 27b, 27b of the operating portions 27, 27 on both sides of the buckle 20 are pushed inward with fingers. Then, as shown in FIGS. 8a and 8b, the contact portions 27b,
The tapered parts 27b' and 27b' of the locking plate part 22 are connected to the tapered parts 2 of the stand parts 22b and 22b on both sides of the locking plate part 22.
2b', 22b' and is further pushed inward, the locking plate portion 22 is elastically deformed upward and the locking pawl 22a is disengaged from the locking groove 42 of the belt 41.
Therefore, the belt 41 can be loosened or removed from the buckle 20.

In this way, the belt 41 has its side ends 43,
43 is held within the guide grooves 29, 29,
The belt 41 does not swing up and down within the insertion hole 25. Therefore, even if the belt 41 is pushed by an external force, it does not move up or down, so the belt 41 will not loosen or come off. Further, as shown in FIG. 8b, when the locking plate part 22 is pushed upward by the operating parts 27, 27 to move or pull out the belt 41 to the right, the belt 41 is moved upward from the bottom wall part 21. When it floats up, it gets caught in the locking claw 22a and its movement is hindered, but the ribs 28, 28 prevent the belt 41 from moving.
Since both sides of the belt 41 are held and the lower surface 41a of the belt 41 is in close contact with the bottom wall portion 21, there is no such problem.

Note that the lower surface 27b'' of the abutting portion 27b is connected to the side wall portion 24.
is at the same height as or slightly above the upper end surface 24a' of the central part 24a, so that when the operating part 27 is pushed inward, the abutting part 27b touches the side wall part as shown in FIG. 8a. 24, the locking piece 22 can be pushed upward even if the elastic return force of the locking piece 22 is set to be sufficiently strong. Further, since the contact portion 27b does not come into contact with the belt 41, the movement of the belt 41 is not hindered.

In addition, as shown in FIGS. 6, 7, and 8, the belt 4
If a longitudinal groove 48 is provided on the back surface 41a of 1, as shown in FIG. It fits within the groove 48 of this belt 41. Therefore, the thickness of the bottom wall portion 21 of the buckle 41 can be set small, and the bulk of the buckle 20 can be further reduced.

<Other embodiments of the present invention> (Figures 9 and 10) Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations of the above embodiments.
Of course, various modifications are possible in the configuration of each part. For example, in the embodiment described above, the rib 28 is provided from the inlet side to the middle of the outlet side of the belt, but it may also be provided only on the outlet side. , or may be provided only in the middle part, or the side wall part 2
4 may be provided over the entire length in the longitudinal direction, or may be provided only on one side wall instead of on both side walls.

In addition, as shown in FIG.
7b may be located below this crosspiece 30.

In addition, instead of the guide grooves 29, 29, as shown in FIG. Provide this belt 4
The protrusion 3 of the buckle 20 is attached to the guide grooves 48, 48 of 1.
1 and 31 may be inserted.

Note that this buckle can also be used, for example, to lock an insert having a single locking groove instead of a belt having a plurality of locking grooves.

<Effects of the present invention> Since the buckle of the present invention is constructed as described above, it has the following effects.

(b) Conventionally, the belt was loosened or pulled out by applying force from the front side of the bag, sports bag, etc. at right angles, but this operation was uncertain because the bag, sports bag, etc. would dent when force was applied. However, with the buckle of this invention, the belt is loosened or pulled out by applying force from both sides in a direction parallel to the attachment surface of the bag, sports bag, shoe, etc. This allows the belt to be loosened or removed reliably, regardless of whether the bag, sports bag, shoes, etc. are soft.

(b) For the same reason, the belt will not loosen or come off on its own due to other external forces from the front side of bags, sports bags, shoes, etc. In addition, since the belt is loosened by pressing the operating parts 27, 27 inward from both sides, the belt will not loosen or come off on its own even if an external force is applied from the side in only one direction. .

(c) Since the belt is operationally locked in close contact with the bottom wall of the bag, the buckle does not become bulky, and the lid can be closed in close contact with the bag body.

(d) Since it is constructed of integrally molded plastic, it is cost-effective and does not rust.
Also, you can freely choose the color.

(e) Since a guide part is provided in the insertion hole to hold and guide the side end of the belt, the belt will not dangle in the buckle, so the belt will not loosen or come off due to external force. Further, as shown in FIG. 8b, when the belt 41 is moved or pulled out to the right by pushing up the locking plate part 22 using the operation parts 27, 27, the belt 41 is moved to the bottom wall part 2.
When the belt 41 lifts upward from 1, it gets caught in the locking pawl 22a and its movement is hindered, but both sides of the belt 41 are held by the guide part, and the lower surface 41a of the belt 41 comes into close contact with the bottom wall part 21. Therefore, the operation of loosening or pulling out the belt 41 will not be hindered at all.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a partially cutaway perspective view, Figure 3 is a plan view, Figure 4 is a cross-sectional view of Figure 3, Figure 5 is a cross-sectional view of Figure 3, and Figure 6 is a cross-sectional view of Figure 3.
The figure is a perspective view showing the state in which the belt is inserted and locked in the buckle in Figure 1, and Figure 7a is the A--
A sectional view, FIG. 7b is a BB sectional view in FIG. 6, and FIGS. 8a and 8b are sectional views with the operating portion pushed in. FIG. 9 is a perspective view showing another embodiment of the present invention, and FIG. 10 is a sectional view showing another embodiment of the present invention. FIG. 11a is a perspective view showing a conventional buckle, and FIG. 11b is a sectional view showing the state in use. Fig. 12a is a perspective view showing another conventional buckle, Fig. 12b is a sectional view taken along line B-B in Fig. 12a, Fig. 12c is a sectional view taken along C-C, and Fig. 12d shows a state in which the operating protrusion is pressed down. FIG. 20... Buckle, 21... Bottom wall part, 21a...
... countersink, 22 ... locking plate part, 22a ... locking claw,
22b...base part, 22b'...tapered part, 23...
... Crosspiece section, 24 ... Side wall section, 24a ... Center section, 2
4b...thick part, 24c...thick part, 25...insertion hole, 26...mounting hole, 27...operation part, 27a
... Plate portion, 27b... Contact portion, 27b'... Taper portion, 28... Rib, 29... Guide groove, 30...
…Sill, 31…Protrusion.

Claims (1)

[Claims for Utility Model Registration] Side wall portions 24, 24 are provided on both sides of the bottom wall portion 21, facing each other and parallel to each other.
A locking plate portion 22 having base portions 22d, 22d connected to its upper end is opposed to the bottom wall portion 21 so that its tip side can be elastically deformed with the base portion 22d as a fulcrum in a direction substantially perpendicular to the bottom wall portion 21. The through hole 25 is formed by the opposing bottom wall portion 21 and the locking plate portion 22 and the opposing both side wall portions 24, 24, and the through hole 25 is provided parallel to each other. Guide portions for holding and guiding both side portions of the belt are provided on the inner walls of the side wall portions 24, 24 so as to be inserted through the belt in contact with the bottom wall portion 21, and on the inner wall near the tip of the locking plate portion 22, The distance between the tip 22a' and the bottom wall 21 is the same as that of the insertion hole 2.
5 is set to be slightly larger than the distance between the bottom surface of the belt and the inner part of the locking groove of the belt inserted with both sides held by the guide part, so that the belt cannot be returned to one side. A locking pawl 22a that locks the locking plate 22 is provided in a protruding manner, and tapered portions 22b', 22b' are provided on both sides of the locking plate portion 22 so as to become narrower toward the bottom wall portion 21. , the both side wall parts 24, 24, the both side wall parts 24, 24,
The tapered portions 22b', 2 on both sides of the locking plate portion 22 are elastically deformed inward using 4 as a fulcrum.
2b' and deforms the tip of the locking plate part 22 in a direction away from the bottom wall part 21;
27, and when the belt is inserted into the insertion hole 25 with its both sides held by the guide part, the elasticity of the locking plate part 22 causes the locking pawl 22a to fit into the belt's locking groove. The belt is locked in one direction irreversibly, and by pressing the operating parts 27, 27 inward from both sides against their elasticity,
The operating parts 27, 27 are brought into contact with the tapered parts 22b', 22b' on both sides of the locking plate part 22, and the locking plate 22 is deformed in a direction away from the bottom wall part 21 against its elasticity. A buckle integrally molded from plastic, characterized in that the locking claw 22a and the locking groove of the belt are released from the locking state by moving the locking claw 22a to the locking groove of the belt.