JP7099043B2 - Buckle for size adjustment band - Google Patents

Description

The present invention relates to a buckle for locking a band or belt having an uneven portion, and more particularly to a buckle used together with a helmet head band, a watch band, a bag or shoe band or belt.

So far, there have been proposals for a buckle for locking a band or a belt having various uneven portions, a band with a buckle for a helmet having a buckle, and the like.

For example, the helmet buckle described in Patent Document 1 includes a holding portion located at one end of a band, a band locking member held by the holding portion and urged toward the holding portion, and a band locking. It is provided with a release member that is tiltably connected to the member. The other band end located between the holding portion and the band locking member is fastened between the holding portion and the band locking member by the urging by the band locking member. At this time, the bias against the band locking member is released by the operation of tilting the releasing member, and the position of the other band end portion is changed with respect to the band locking member, so that the size of the ring formed by the helmet headband is large. Is adjusted to the size of the head.

The buckle of Patent Document 1 is composed of three members, a holding portion, a band locking member, and a releasing member, and the invention of Patent Document 2 was made for the purpose of reducing these members. Patent Document 2 discloses a buckle having a first resin member corresponding to the holding portion of Patent Document 1 and a second resin member that also serves as a band locking member and a releasing member of Patent Document 1. The second resin member has a resin spring in which the free end is hung on the fastening portion on the first resin member and the fixed end is supported by the shaft support portion on the first resin member, whereby the first resin member. The member and the second resin member can be urged in a direction in which they approach each other. Then, by tilting the second resin member relative to the first resin member with the fixed end of the spring resin as the center of tilt, the resin spring is urged in the gap between the first resin member and the second resin member. Releases the pressure on the fasteners.

Japanese Unexamined Patent Publication No. 2013-102839 JP-A-2017-82368A

An object of the present invention is to reduce the number of buckle members by a configuration different from that of Patent Document 2.

That is, in the present invention, the buckle body 4A integrally molded with the band 3 at the other end of the band 3 in order to fix one end of the band 3 having the uneven portions 1 and 2, and the buckle body 4A can be tiltably attached to the release. A buckle 4 having a member 4B, the buckle body 4A has an elastic member 7 having a free end 9 having an engaging portion 10 that is swingable at one end and can engage with the uneven portions 1 and 2, and a band 3. The first opening 19 through which the band 3 is inserted before passing through the engaging portion 10, the second opening 14 through which the band 3 is inserted after the band 3 has passed through the engaging portion 10, and the free ends 9 and the first. There is a first space 20 for inserting the release member 4B between the two openings 14, and a second space 21 where the contact space between the upper and lower surfaces of the elastic member 7 is a space into which the mold at the time of molding can be inserted. The member 4B is elastic between the ceiling plate 11 having the operation portion 16 at one end, the foot 18 connecting the bottom plate 17 facing the ceiling plate 11, the ceiling plate 11 and the bottom plate 17, and the operation portion 16 and the spring foot 18. A buckle having a free end 9 of a member 7 and an engageable release portion 15.

According to the present invention, it is possible to reduce the number of buckle members.

It is a perspective view which shows the buckle of one Embodiment of this invention. It is sectional drawing when the band is inserted into the buckle of FIG.

Hereinafter, the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of the buckle of the present invention. FIG. 2 is a cross-sectional view when the band is inserted into the buckle of FIG. The buckle 4 has a buckle body 4A and a release member 4B. The buckle body 4A is integrally molded with the other end of the band 3 in order to fix one end of the band-shaped band 3. As shown in FIG. 2, a large number of concave portions 1 and convex portions 2 extending in the band width direction are alternately formed on the surface of one end of the band 3 on the same side as the buckle 4.

The buckle body 4A has an inlet side wall 6A that connects a pair of side wall portions 6 formed in the band longitudinal direction at the bottom frame 5 and the edge portion of the bottom frame 5 in the band width direction and one end of the pair of side wall portions 6. As a result, a slot-shaped first opening 19 through which the band 3 is inserted is formed in the longitudinal direction of the band. The band 3 inserted into the first opening 19 is supported by the bottom frame 5. Further, it has an outlet side wall portion 6B connecting the other ends of the pair of side wall portions 6, and a slot-shaped second opening 14 through which the band is inserted is provided at the bottom frame 5, the pair of side wall portions 6 and the outlet side wall portion 6B. Is forming. The band 3 is supported by the bottom frame 5 after passing through the engaging portion 10.

A leaf spring-shaped elastic member 7 extending in the longitudinal direction of the band substantially parallel to the band 3 when the band 3 is inserted is provided between the pair of side wall portions 6. In this embodiment, one end of the elastic member 7 is connected to the pair of side wall portions 6 as the fixed end 8, but may be connected to the inlet side wall portion 6A. The other end of the elastic member 7 near the outlet side wall portion 6B is a free end 9 that can swing up and down.

The elastic member 7 has a substantially constant wall thickness over the entire length, and the wall thickness is such that even if the band 3 is strongly pulled in the band pulling direction, the engaging portion 10 cannot be easily lifted. Is set to. However, the wall thickness of the elastic member 7 does not have to be constant, and for example, the elastic member 7 may be formed so as to become thicker from the free end 9 toward the fixed end 8 to further improve the elastic force. The elastic member 7 may be formed so that the engaging portion 10 always presses the band 3 or the recess 1 and the engaging portion 10 engage with each other but do not generate a urging force to press the band 3. May be.

A certain gap is provided between the exit side wall portion 6B and the free end 9, and the release portion 4B is a first space 20 into which the release portion 4B can be inserted.
In the space in contact with the upper and lower surfaces of the elastic member 7, a second space 21 is formed so that the mold can be inserted before the release portion 4B is inserted.

An engaging portion 10 extending in the band width direction is formed on the lower surface of the free end 9, and when the band 3 is inserted along the first opening 19, the engaging portion 10 fits into any recess 1 on the upper surface of the band. The band 3 cannot be pulled out. From the viewpoint of ensuring this engaged state, the engaging portion 10 is preferably a locking claw.
A rectangular release member 4B for releasing the band 3 is arranged inside the pair of side wall portions 6, the inlet side wall portion 6A, and the outlet side wall portion 6B. The release member 4B has a ceiling plate 11 and a bottom plate 17 facing the ceiling plate 11, and a pair of spring legs 18 connecting the ceiling plate 11 and the bottom plate 17. One end of the ceiling plate 11 is an operation unit 16. In this embodiment, the operation unit 16 has a shape in which the edge portion in the width direction of the upper band is projected so that a finger can be easily caught.

The pair of spring legs 18 extend downward from the edge of the lower surface of the ceiling plate 11 in the band width direction and are connected to the bottom plate 17. The position of the pair of spring legs 18 in the band longitudinal direction is preferably a position away from the operation unit 16 so that the operation unit 16 can be easily pulled up, and is preferably the other end 12 of the ceiling plate 11 or its vicinity.
The spring foot 18 may be linear, but it is preferable that the spring foot 18 is curved so as to be dented toward the operation unit 16 so that the operation unit 16 can be easily pulled up.
In the present embodiment, in order to prevent the ceiling plate 11 from shaking in the upward direction, the lower surface of the other end 12 has a shape protruding downward with a constant width in the width direction of the band, and is formed on the inner surface of the outlet side wall 6B. It is supported by the other end support portion 13 which is provided and protrudes horizontally with a constant width in the band width direction.

On the lower surface of the ceiling plate 11 between the operation portion 16 and the spring foot 18, a substantially L-shaped release portion 15 that can engage with the free end 9 of the elastic member 7 is formed in the width direction of the band. A portion of the release portion 15 that engages with the L-shaped free end 9 extends along the lower surface of the free end 9 of the elastic member 7 to the vicinity of the engaging portion 10. When the operation portion 16 is pulled up, the release portion 15 is lifted, and the free end 9 of the elastic member 7 is further lifted. As a result, the engaging portion 10 is disengaged from the recess 1 of the band 3, and the band 3 is released from locking.

In the release member 4B, the bottom plate 17 is inserted in the A direction from the first space 20 surrounded by the free end 9 of the elastic member 7, the pair of side wall portions 6 and the outlet side wall portion 18, and the other end portion 12 is supported by the other end portion 12. It is brought into contact with the portion 13 and placed on the bottom frame 5. By doing so, the space surrounded by the bottom frame 5 and in contact with the lower surface of the elastic member 7 in the second space 21 is blocked, and the hair band when wearing the helmet is prevented from being caught.

As shown in FIG. 2, the concave portion 1 and the convex portion 2 formed in the band 3 are serrated in a cross section along the longitudinal direction of the band. That is, the surface of the convex portion 2 toward the band extraction direction is substantially vertical, and the surface toward the band insertion direction is an inclined surface. Correspondingly, in the cross-sectional shape of the locking claw 10, the surface facing the band pulling direction is an inclined surface, and the surface facing the band insertion direction is a substantially vertical surface. As a result, when the band 3 is inserted into the buckle 4, the inclined surface of the engaging portion 10 slides along the inclined surface of the convex portion 2, the elastic member 7 is lifted, and the engaging portion 10 gets over the convex portion 2. .. On the contrary, when the band 3 is pulled out from the buckle 4, the vertical surface of the engaging portion 10 comes into contact with the vertical surface of the convex portion 2, and the elastic member 7 is not lifted, so that the band 3 is prevented from coming off.

The shapes of the concave portion 1 and the convex portion 2 of the band 3 and the engaging portion 10 of the elastic member 7 are not limited to the above structure and can be variously deformed. For example, the recess 1 of the band 3 may be a large number of holes formed in the band 3 at regular intervals, in which case the engaging portion 10 fits into the holes, for example, the tip is rounded. It may be a rod-shaped protrusion. Further, the cross-sectional shape of the concave portion 1 and the convex portion 2 may be a waveform such as a sine wave shape or a triangular wave shape, and in that case, the engaging portion 10 may have a claw shape or a complementary shape to each of them.

The material of the buckle body 4A and the release member 4B is not limited, but sufficient strength and elastic force can be ensured by molding using a general resin such as polyethylene or polypropylene.

1 Band recess 2 Band convex 3 Band 4 Buckle 4A Buckle body 4B Release member 5 Bottom frame 6 Side wall 6A Entrance side wall 6B Exit side wall 7 Elastic member 8 Fixed end 9 Free end 10 Engagement part 11 Ceiling plate 12 The other end 13 The other end support 14 The second opening 15 The release part 16 The operation part 17 The bottom plate 18 The spring foot 19 The first opening 20 The first space 21 The second space

Claims (1)

A buckle body (4A) integrally molded with the band (3) at the other end of the band (3) in order to fix one end of the band (3) having the uneven portions (1, 2).
A buckle (4) having a release member (4B) that is tiltably attached to the buckle body (4A).
The buckle body (4A) is
An elastic member (7) and a band (3) having a free end (9) having an engaging portion (10) that can swing at one end and can engage with the uneven portion (1, 2) are engaged with the engaging portion (10). ), The first opening (19) through which the band (3) is inserted, and
A second opening (14) through which the band (3) is inserted after the band (3) has passed through the engaging portion (10).
The contact space between the upper and lower surfaces of the first space (20) and the elastic member (7) for inserting the release member (4B) between the free end (9) and the second opening (14) inserts the mold during molding. It has a second space (21), which is a space that can be created.
The release member (4B) is
Operation with a ceiling plate (11) having an operation unit (16) at one end, a bottom plate (17) facing the ceiling plate (11), and a spring foot (18) connecting the ceiling plate (11) and the bottom plate (17). A buckle having a free end (9) of an elastic member (7) and an engageable release portion (15) between a portion (16) and a spring foot (18).

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