JP6997649B2 - buckle - Google Patents

Description

The present invention relates to a buckle used to connect and separate two separable bands and strings in bags, clothes, shoes, safety belts, seat belts, accessories and the like.

Buckles such as those mentioned above are widely used in our daily lives. Particularly recently, a type that is often used is a type in which a male member having a protrusion like a crab claw is inserted into a box-shaped female member to be connected, or a male member is pulled out from the male member to be separated. For example, the following inventions pertaining to the applicant's application fall under this category.

JP 2000-79005 Japanese Patent Application Laid-Open No. 2001-346612 (Patent No. 3790094) WO2011 / 115267 (Patent No. 5763050)

The buckle of the above type has a female member in one hand and a male member in the other hand, and connects and separates the two. Normally, that's not a problem, but if one hand is lost or injured, or even a healthy person can't use it because one hand is occupied, it is convenient to be able to operate it with only the remaining other hand.

It is an object of the present invention to provide a buckle that can be used with one hand.

The present invention is buckles 1, 1A, 1B composed of two parts, a female member 2, 2A and a male member 3, 3A that can be attached to and detached from the female member 2, 2A. The guide projection 32 has a base portion 33 for supporting the front portion at the rear portion, and the engaging projection 31 has a tip portion 311 and a laterally protruding bulging portion 312, and the bulging portion thereof. It has a step portion 314 provided at the rear end of the 312 and a leg portion 315 provided behind the step portion 314, and the female member 2 is connected to the box-shaped portion 20 and the box-shaped portion 20. , The box-shaped portion 20 has a base portion 21 that supports the box-shaped portion 20, the box-shaped portion 20 has a tip opening 22 that fits with the male member 3 at the tip, and the bulging portion 312 is engaged with the side portion. In a device having a pair of a locking opening 24 and a side wall 23 that engages with the step portion 314, and further having an upper surface 25 and a lower surface 26, either the upper surface 25 or the lower surface 26 of the female member 2 is provided. The position where the guide protrusion 32 of the male member 3 is vertically inserted, the first slits 251,251A, 251B are provided, and the leg portion 315 of the male member 3 is inserted in the vertical direction. The female member 2 is vertically inserted into the box-shaped portion 20 through the first slits 251,251A, 251B and the second slits 255, 255A, 255B. It is characterized by being able to.

According to another aspect of the present invention, the tip of the rear end side upper surface 252A of the cut first slit 251A forms a protrusion 253A toward the passage side, and a small protrusion 324A is formed on the tip 323A of the guide protrusion 32A. Is formed, and the protrusion 253A and the small protrusion 324A can be engaged with each other (claim 2).

According to still another aspect of the present invention, the width of the cutting edge portion 325B of the guide protrusion 32B of the male member 3B is longer than the width of the guide protrusion 32B of the other portion, and the female member is said to have the first width. The width of the most advanced portion 2511B of the 1 slit 251B is longer than the width of the first slit 251B of the other portion (claim 3).

According to the invention of claim 1, the male member 3 can be inserted not only into the tip opening 22 of the female member 2 from the lateral direction but also into the first slit 251 and the second slit in the vertical direction from above. become able to. In other words, as a method of connecting the male member 3 to the female member 2, two methods of inserting from the horizontal direction and from the vertical direction can be selected.

According to the second aspect of the present invention, once the tip 323A of the guide protrusion 32A is inserted into the first slit 251A, the protrusion 253A and the small protrusion 324A are engaged with each other, and then the male member 3A rear end side is lowered with that as a fulcrum. By pushing down to, the entire male member 3A can be inserted into the female member 2. That is, the male and female members are connected only by first fixing the tip of the male member 3A and then pushing down the rear end side, so that the connection becomes easy.

According to the third aspect of the present invention, not only the engaging projection 31B of the male member 3B is fixed at the locking opening 24B of the female member 2B, but also the guide projection 32B of the male member 3B is also the first slit of the female member 2B. Since it is fixed at the tip of the male and female members, the connection between the male and female members becomes extremely strong.

It is a perspective view of the buckle which concerns on Example 1. FIG. It is (a) front view, (b) left side view, (c) bottom view, (d) right side view, (e) top view, (f) cross-sectional view of the male member of the same Example. It is (a) front view, (b) left side view, (c) bottom view, (d) right side view, (e) top view, (f) cross-sectional view of the female member of the same Example. (A) and (b) are cross-sectional views showing how to engage the male and female members of the same embodiment, and (c) is a front view of the combined state. (A), (b) and (c) are cross-sectional views showing a method of engaging the male and female members of the second embodiment, and (d) is a bottom view of the combined state. It is (a) bottom view and (b) cross-sectional view of the female member of the same Example. It is (a) left side view, (b) front view, (c) front view, (d) cross-sectional view of the female member of the same Example. It is (a) front view and (b) central cross-sectional view of the male member of Example 3. FIG. It is (a) front view, (b) side view, (c) central cross-sectional view of the female member of the same Example. (A) and (b) are cross-sectional views showing how to engage the male and female members of the same embodiment, and (c) is a front view of the combined state.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 1, the buckle 1 is composed of two parts, a female member 2 and a male member 3 that can be attached to and detached from the female member 2. Both are entirely molded from synthetic resin.

<Male member 3>
The male member 3 has two engaging protrusions 31 like crab claws and one guide protrusion 32 at the front, and a rectangular base 33 at the rear to support the front.

At the tip of each engaging protrusion 31, a tapered tip portion 311 and a bulging portion 312 protruding in the lateral direction are formed. A horizontal portion 313 is formed inside the tip portion 311 and the bulging portion 312, and a step portion 314 is formed at the rear end of the bulging portion 312. Behind the step portion 314 is a narrow leg portion 315, which is connected to the base portion 33.

As shown in FIG. 2, the central guide protrusion 32 is provided with rectangular shallow recesses 321 and 322 from above and below. This is for decoration and reinforcement.

The base 33 is provided with a connecting portion 34 for connecting to a strap (not shown). As shown in FIG. 2 (f), the connecting portion 34 is provided with fixing rods 341 and 342 for fixing the strap.

<Female member 2>
The female member 2 has a flat box-shaped portion 20 at the front portion and a rectangular base portion 21 connected to and supported by the box-shaped portion 20.

The box-shaped portion 20 has a tip opening 22 for insertion that fits with the male member 3 at the tip, a pair of side walls 23 and a pair of locking openings 24 on the side portions, and further has an upper surface 25 and a lower surface 26. Here, the terms "upper surface" and "lower surface" are for convenience, and are relative to each other, where one is on the top and the other is on the bottom.

What is characteristic of the present invention is that the upper surface 25 of the female member 2 has the first slit 251 and the leg portion 315 of the male member 3 is in the vertical direction at the position where the guide protrusion 32 of the male member 3 is inserted in the vertical direction. The upper surface 25 of the female member 2 has the second slit 255 at the position where it is inserted into.

With such a configuration, the male member 3 can be inserted not only into the tip opening 22 of the female member 2 from the lateral direction, but also with respect to the first slit 251, the second slit 255, and the locking opening 24. You will be able to insert it vertically from above. In other words, as a method of connecting the male member 3 to the female member 2, two methods of inserting from the horizontal direction and from the vertical direction can be selected.

The base 21 is provided with a connecting portion 211 for connecting to a strap (not shown).

<Connecting / separating male and female members 2 and 3>
When the male member 3 is inserted into the tip opening 22 of the female member 2 and the male and female members 2 and 3 are joined from the lateral direction, the tip portion 311 of the engaging protrusion 31 enters, so that the bulging portion 312 is inside by the side wall 23. It is pushed toward and deforms. When the bulging portion 312 engages with the locking opening 24, the bulging portion 312 pushed inward is restored, exposed from the locking opening 24, and the stepped portion 314 is stopped by the side wall 23. The bond between the two is certain.

To release the connection between the male and female members, once push the bulging portion 312 of the male member exposed from the locking opening 24 of the female member inward with a finger to suppress the spring action of the engaging protrusion 31. The two will be separated.

When the male member 3 is pushed into the upper surface first slit 251, the second slit 255, and the locking opening 24 of the female member 2 to join the male and female members from the vertical direction, the guide protrusion 32 enters the first slit 251 as it is. The leg portion 315 of the engaging protrusion 31 sinks while expanding the side wall 23 (at this time, the bulging portion 312 opens slightly outward due to the reaction) and enters the second slit. When the coupling is completed, as shown in FIG. 4, the bulging portion 312 of the engaging protrusion 31 engages with the locking opening 24 of the female member, and the step portion 314 is stopped by the side wall 23, so that the coupling between the two is reliable. It will be something like that.

In order to release the connection between the male and female members, unlike the case of connection, when the male member 3 is taken out in the vertical direction from the vertical direction, the finger does not touch the male member 3, and the side wall 23 cannot be expanded by the finger. Therefore, it is extremely difficult. Therefore, as with the conventional buckle, the bulging portion 312 of the male member once exposed from the locking opening 24 of the female member is pushed inward with a finger to suppress the spring action of the engaging protrusion 31, and then both are used. Will be pulled apart.

5 to 7 show the buckle 1A of the second embodiment.

Since the second embodiment is generally similar to the first embodiment, in the second embodiment, the same parts as those in the first embodiment are designated by the same reference numerals with the letter “A”, and the description thereof will be omitted. The differences between the two are as follows.

(A) As shown in FIG. 5, the length of the first slit 251A of the second embodiment is shorter than the length of the first slit 251 of the first embodiment. That is, the length of the rear end side upper surface 252A of the first slit 251A of the second embodiment is long. Further, the tip of the upper surface 252A on the rear end side faces inward, forming a protruding portion 253A with a slight angle.
(B) As shown in FIG. 5, a small protrusion 324A is formed at the tip 323A of the guide protrusion 32A.

In the second embodiment, the male member 3A is tilted and once guided as shown in FIG. 5, instead of being vertically inserted into the female member 2 while keeping the male member 3 in the horizontal state as in the first embodiment. By inserting the tip 323A of the protrusion 32A into the first slit 251A (FIG. 5A), engaging the protrusion 253A with the small protrusion 324A, and then pushing down the rear end side of the male member 3A with that as a fulcrum. (FIG. 5 (b)), the entire male member 3A is inserted into the female member 2 (FIG. 5 (c)).

That is, the male and female members are connected only by first fixing the tip of the male member 3A and then pushing down the rear end side, so that the connection becomes easy.

8 to 10 show the buckle 1B of the third embodiment.

Since the third embodiment is generally similar to the first embodiment, in the third embodiment, the same parts as those in the first embodiment are designated by the same reference numerals with the letter "B", and the description thereof will be omitted. The differences between the two are as follows.

(A) As shown in FIG. 8, the tip width of the guide protrusion 32B of the male portion 3B material is widened toward the end, the tip end portion 325B is perpendicular to the longitudinal direction, and the width thereof is other than that. Slightly longer than the width of the part.
(B) As shown in FIG. 9, the length of the first slit 251B of the female member is shorter than that of the first embodiment, the cutting edge portion 2511B is perpendicular to the longitudinal direction, and the width thereof is other than that. Slightly longer than the width of the part.

In this Example 3, the male and female members are mainly connected from the vertical direction, and when they are separated from each other, the horizontal direction is used. That is, the male member 3B is pushed into the upper surface first slit 251B, the second slit 255B, and the locking opening 24B of the female member 2B to join the male and female members from the vertical direction. The guide protrusion 32B enters the first slit 251B as it is, and the leg portion 315B enters the second slit 255B while expanding the side wall 23B.

At that time, since the shapes of the cutting edge portion 325B of the guide protrusion 32B and the cutting edge portion 2511B of the first slit 251B are almost the same (see FIG. 10C), the position at the time of insertion is stable and the cutting edge portion 325B is inserted. As a fulcrum, it will be easy to fit in the correct position. Further, in the third embodiment, not only the bulging portion 312 of the engaging projection 31B but also the most advanced portion 2511B of the guide projection 32B is fixed, so that the connection between the male and female members becomes extremely strong.

Also in this embodiment, the male member 3B may be inserted into the tip opening 22B of the female member 2B to connect the male and female members 2B and 3B from the lateral direction depending on the width of the cutting edge portion 325B of the guide protrusion 32B. It is possible. In that case, it is a little difficult especially at the start of insertion, but it is easy because the bulging portion 312B is simply pressed from the left-right direction and pulled out when breaking the bond.

1,1A, 1B Buckle 2,2A, 2B Female member 20 Box-shaped part 21 Base part 211 Connection part 22 Tip opening 23 Side wall 24 Locking opening 25 Top surface 251,251A, 251B First slit 2511B Cutting edge part 252A Rear end side top surface 253A Protruding part 255 Second slit 26 Bottom surface 3,3A, 3B Male member 31 Engaging protrusion 311 Tip part 312 Protruding part 313 Horizontal part 314 Step part 315 Leg part 32, 32A, 32B Guide protrusion 323A Tip 324A Small protrusion 325B Cutting edge 33 Base 34 Connection 341,342 Fixed rod

Claims (3)

A buckle (1,1A, 1B) consisting of two parts, a female member (2,2A , 2B ) and a male member (3,3A , 3B ) that can be attached to and detached from the female member (2,2A, 2B).
The male member (3) has an engaging protrusion (31) and a guide protrusion (32 , 32A, 32B ) at the front portion, and has a base portion (33) at the rear portion for supporting the front portion.
The engaging protrusion (31) includes a tip portion (311), a bulging portion (312) projecting laterally, and a stepped portion (314) provided at the rear end of the bulging portion (312). , Has a leg (315) provided behind this step (314) ,
The female member (2) has a box-shaped portion (20) and a base portion (21) connected to the box-shaped portion (20) and supporting the box-shaped portion (20).
The box-shaped portion (20) has a tip opening (22) at the tip thereof that fits with the male member (3), and a locking opening (24) with which the bulging portion (312) engages with a side portion. A pair of side walls (23) that engage with the step portion (314) , and further having an upper surface (25) and a lower surface (26).
Either the upper surface (25) or the lower surface (26) of the female member (2)
The male member (3) has a first slit (251, 251A, 251B) at a position where the guide protrusion (32 , 32A, 32B ) is inserted in the vertical direction.
The male member (3) has a second slit (255, 255A, 255B) at a position where the leg portion (315) is inserted in the vertical direction .
Through the first slit (251,251A, 251B), the second slit (255, 255A, 255B) and the locking opening (24), the female member (2) is vertically oriented toward the box-shaped portion (20). Can be inserted from
A buckle (1,1A, 1B) characterized by this. The tip of the upper surface (252A) on the rear end side of the first slit (251A) forms a protrusion (253A) toward the passage side of the male member (3), and the tip of the guide protrusion (32A). A small protrusion (324A) is formed on (323A), and a small protrusion (324A) is formed.
The buckle (1A) according to claim 1, wherein the protrusion (253A) and the small protrusion (324A) are engaged with each other. The width of the most advanced portion (325B) of the guide protrusion (32B) of the male member (3B) is longer than the width of the guide protrusion (32B) of the other portion, and the first slit of the female member (32B). The buckle (1B) according to claim 1, wherein the width of the most advanced portion (2511B) of 251B) is longer than the width of the first slit (251B) of the other portion.

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