JP2013094301A - Buckle with locking mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lightweight buckle with a locking mechanism facilitating manufacture and capable of preventing release of engagement due to application of a pushing pressure directly acting on an operation plate.SOLUTION: This buckle includes a sliding piece on the buckle body, the sliding piece being movable on the upper part of the operation plate of the buckle in the horizontal direction. When the sliding piece is on a connecting shaft, a band is configured to approach to the buckle but not to retreat therefrom. When the sliding piece has moved to one end side of the operation plate, swinging of the operation plate is restricted. When the sliding piece has moved to the other end side of the operation plate, the engagement between the buckle and the band is released.

Description

The present invention relates to a buckle for locking a band or belt having an engagement groove, and particularly for products that require a relatively strong fastening force, such as athletic shoes, competition shoes, snowboard shoes, and protector locking belts. For the buckle.

Conventionally, a buckle is known in which an engagement groove is provided in a band (or belt), a hook of a buckle is elastically engaged with the groove, and the locked state can be released at any time.
In Japanese Patent No. 3989555 (Patent Document 1), the inventors of the present invention are an easy-to-manufacture and lightweight synthetic resin buckle that includes an opposing bottom plate, a ceiling frame, and both side plates that connect the two, and the interior is related. A buckle body which is a space for inserting a band having a mating groove, an engagement claw which is horizontally installed on the inner side of the ceiling frame and can be engaged with the engagement groove of the band on the lower surface of the one end, and the other end An operation plate having an upper surface as a pressing portion, and connecting the operation plate to two opposite sides of the ceiling frame at the intermediate point between the engaging claw and the pressing portion. A synthetic resin buckle that is freely swingable as a synthetic resin provided with a pair of hooking projections on the outer surface of the band and the ceiling frame, and the band can be pulled to the buckle body with a fingertip of one hand. Proposed buckle made.

  The synthetic resin buckle is very excellent in function and is optimal as a headband buckle for helmets, but in order to improve the operability in engagement / release of the operation plate, a connecting shaft that supports the operation plate is used. When it is thinned, when this is applied to a product that requires a relatively strong fastening force, such as athletic shoes, a strong force acts in the direction of pulling the band away from the buckle when the band and the buckle are locked. There was a possibility that the connecting shaft was damaged.

On the other hand, as a cap having air permeability, one having a vent hole in a cap body, one using a mesh material for part or all of the cap body fabric, and the like are known.
In the method of providing a vent hole in the cap body, several vent holes having a diameter of about 1 mm to 5 mm are provided at appropriate positions on the cap body. However, since the vent hole is small, sufficient air permeability to ensure a refreshing feeling is ensured. I couldn't. In addition, if a mesh material is used for a part of the fabric of the cap body, breathability can be secured, but since the sunlight is directly applied to the part using the mesh material, the wearer has a sufficient refreshing feeling. I can't feel it. Furthermore, when the cap body is provided with vent holes or a mesh material is used as part of the cap body fabric, the appearance of the cap body is not good.

  In addition, in the patent No. 4005109 (Patent Document 2), the present inventors have a light and simple configuration as a band and buckle slide adjuster particularly suitable for use as clothing and the like, and the buckle portion is not conspicuous. As a slide adjuster having an appearance, a band and a buckle that engage with a hook-like engagement claw formed in a serrated engagement groove formed on the outer surface of the band and in which the band is accessible to the buckle but cannot be retracted. In the slide adjuster of the present invention, the buckle comprises a bottom plate, a ceiling frame, and both side plates connecting the two, and a buckle main body having a band insertion space inside, and is horizontally installed inside the ceiling frame, and has a bottom surface at one end. And an operation plate having an engaging claw engageable with the engaging groove of the band and having the other end as a pressing portion for releasing the engagement. And the support plate is supported by a connecting shaft that connects the both side plates at an intermediate point between the engaging claw and the pressing portion, thereby allowing the operation point to swing around the intermediate point, and the outer surface of the band. The pressing portion is provided with a pair of latching projections capable of pulling the buckle and the band with the fingertips of one hand, and the latching projections with respect to the operation plate extending from the connecting shaft to the latching projections The member which provided the member which regulates that the pressing force of a perpendicular direction acts directly on a part other than is proposed in the buckle main part.

  Since this slide adjuster is provided with a regulating member, there is no risk of inadvertent or sudden unlocking, but it is not necessary to unlock the pressing force that acts directly on the pressing part or the latching protrusion. It cannot be prevented. Further, when pulling out the buckle from the band, there is a problem that the operation is complicated because the buckle has to be pulled out while pressing the pressing portion.

Japanese Patent No. 3982955 Japanese Patent No. 4005109

It is an object of the present invention to provide a buckle with a lock mechanism that can prevent disengagement even against a pressing force that directly acts on the operation plate, in addition to being lightweight and easy to manufacture. Is.
In addition, the present invention enables easy engagement locking and disengagement only by operating the slide piece, and when the slide piece is on the connecting shaft, the band can freely approach the buckle by the action of the slide piece. Since it is impossible to move backward, there is no need to form the connecting shaft with an elastic material or use a spring for the connecting shaft, and the material of the connecting shaft can be freely selected to provide a stronger buckle. It is intended.

  The present invention relates to a buckle in which an engagement claw of a buckle can be engaged with a serrated engagement groove formed on the outer surface of the band, and the buckle includes a bottom plate, a ceiling frame, and both side plates that connect the both. And a control body having an engaging claw that is horizontally installed inside the ceiling frame and engageable with the engaging groove of the band. A slide piece that is movable in the horizontal direction at the upper part of the operation plate in a buckle that is swingable about the intermediate point as a fulcrum by supporting the operation plate with a connecting shaft that connects the two side plates at the intermediate point. Is installed on the buckle body, and when the slide piece is on the connecting shaft, the band is accessible to the buckle but cannot be retracted, and the slide piece is moved to one end side of the operation plate. Before Rocking the operation plate is restricted, in a state where the slide piece is moved to the other end side of the operation plate, wherein the engagement is released.

It is preferable that a latching portion is provided on the slide piece.
It is preferable that a latching portion is provided on the ceiling frame so that the buckle and the band can be drawn with a fingertip of one hand.

  It is preferable that a slide groove for guiding the movement of the slide piece and for determining the position of the slide piece in the upper part of the operation plate is provided inside the ceiling frame.

  The present invention relates to a buckle in which the engagement claw of the buckle is engaged with a serrated engagement groove formed on the outer surface of the band, and the band can be retracted but cannot be retracted in the locked state. The buckle is composed of an opposing bottom plate, a ceiling frame, and both side plates that connect the two, and a buckle main body having a band insertion space inside, and is horizontally installed inside the ceiling frame. An operation plate having an engaging claw engageable with the groove and having the other end as a pressing portion for releasing the engagement. In a buckle that is swingable with the intermediate point as a fulcrum by being supported by a connecting shaft to be connected, a rotating piece whose length in one direction is longer than the length in a direction perpendicular thereto is placed on one end of the operation plate. It is installed so that it can rotate 90 degrees, and the rotating piece A shelf that receives at least one end in the longitudinal direction from the ceiling frame side is formed on the ceiling frame, and the swing of the operation plate is restricted in an engaged state between the shelf and one end of the rotating piece. It is characterized by being.

  The present invention relates to a buckle in which the engagement claw of the buckle is engaged with a serrated engagement groove formed on the outer surface of the band, and the band can be retracted but cannot be retracted in the locked state. The buckle is composed of an opposing bottom plate, a ceiling frame, and both side plates that connect the two, and a buckle main body having a band insertion space inside, and is horizontally installed inside the ceiling frame. By comprising an elastic piece having an engaging claw that can be engaged with the groove and a pressing piece that is installed on the both side plates and presses the elastic piece from both sides, and the pressing piece is taken with the fingertip of one hand In the buckle that is capable of releasing the engagement between the engagement groove and the engagement pawl by repelling the elastic piece, a rotating piece having a length in one direction longer than a length in a direction perpendicular thereto is provided on the elastic piece. And can be rotated by 90 degrees, and the rotating piece A shelf that receives at least one end in the longitudinal direction from the ceiling frame side is formed on the ceiling frame, and the elastic piece is restricted from being elastic in an engaged state between the shelf and one end of the rotating piece. It is characterized by being.

The buckle of the present invention can prevent disengagement even against a pressing force that directly acts on the operation plate.
In addition, the present invention enables easy engagement locking and disengagement only by operating the slide piece, and when the slide piece is on the connecting shaft, the band can freely approach the buckle by the action of the slide piece. Since it is impossible to move backward, there is no need to form the connecting shaft with an elastic material or use a spring for the connecting shaft, and the material of the connecting shaft can be freely selected to provide a stronger buckle. Can do. Therefore, this buckle is optimally applied to products that require a relatively strong fastening force such as athletic shoes.

1 is a perspective view of a buckle 10. FIG. FIG. 6 is a longitudinal sectional side view of a main part showing a lock mechanism by a rotating piece 60. 3 is a longitudinal sectional side view of a main part showing an engaged state of a buckle 10 and a band 30. It is a perspective view of other embodiment of the buckle.

Hereinafter, embodiments of a buckle with a lock mechanism according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a buckle 10. In these drawings, the buckle 10 is a flat plate comprising a bottom plate 11, a ceiling frame 12 facing the bottom plate 11, and side plates 13 and 13 connecting the bottom plate 11 and the ceiling frame 12. The main body is constituted by the cylindrical buckle body 14. The buckle body 14 is opened in the band sliding direction as insertion holes 15, 15, and the inside thereof becomes an insertion space 16 of the band 30 having an engagement groove described later.

  In the present embodiment, the length of the bottom plate 11 in the longitudinal direction (the sliding direction of the band) is made longer than the length of the ceiling frame 12 in the longitudinal direction, whereby the connected body of the buckle 10 (that is, an athletic shoe band or the like). The band can be easily inserted and the band can be inserted smoothly. Further, the same effect can be obtained by configuring the ceiling frame 12 with a flat plate and extending the ceiling frame 12 facing the one end portion 20 </ b> A of the operation plate 20 horizontally in the direction opposite to the operation plate 20.

  On the inner side of the ceiling frame 12, an operation plate 20 having a size that fits in the ceiling frame 12 is horizontally installed. An engaging claw 21 (see FIG. 2 to be described later) that can engage with the engaging groove of the band 30 protrudes from the lower surface of the one end portion 20 </ b> A of the operation plate 20. By making the operation plate 20 slightly lower than the ceiling frame 12, it is possible to prevent the one end portion 20A or the other end portion 20B of the operation plate 20 from being inadvertently pushed down.

A connecting shaft 25 is formed at an intermediate portion in the longitudinal direction of the operation plate 20, and this connecting shaft 25 is supported on the upper inner walls of the side plates 13 and 13.
In this embodiment, the cross section of the connecting shaft 25 is rectangular, but it can be circular, elliptical, or other various cross sectional shapes. It is desirable that the connecting shaft 25 pivotally supports the operation plate 20 and is made as thin as possible in order to ensure smooth operability. Just do it. Note that the connecting shaft 25 is not limited to the side plates 13 and 13, and even if connected to two sides of the facing ceiling frame 12, the connecting shaft 25 can exhibit the same operation as described below.

  Slide grooves 17 and 17 for sliding the slide piece 40 are formed on the side plates 13 and 13 of the buckle 10. FIGS. 1B and 1C are perspective views showing a state in which the slide piece 40 moves along the slide grooves 17 and 17. On the surface of the slide piece 40, a latching portion 42 is provided so as to protrude upward. Although the latching part 42 does not necessarily need to be provided in the slide piece 40, the slide operation of the slide piece 40 can be made easy by providing this. In the present embodiment, the slide piece has a rectangular shape, but it does not have to be rectangular.

Next, the operation of the buckle 10 will be described with reference to FIG. FIG. 2A is a longitudinal sectional side view of the main part showing an engaged state of the buckle 10 and the band 30.
In FIG. 2A, the band 30 is inserted into the insertion space 16 of the buckle 10, and the engagement claw 21 of the buckle 10 is engaged with the engagement groove 31 formed on the outer surface of the band 30. The engagement groove 31 has a sawtooth cross-sectional shape in the sliding direction, that is, a tapered surface that gradually becomes deeper in the traveling direction of the band 30 and a wall surface that rises substantially perpendicularly from the deepest position.

When the slide plate 40 is positioned on the connecting shaft 25, the band 30 is moved into the insertion space 16 from the insertion port 15 on the other end 20 </ b> B side (left side in FIG. 2) of the operation plate 20. The upper surface of the operation plate 20 comes into contact with the engaging claw 21 of the operation plate 20 and moves forward while pushing up one end portion 20A of the operation plate 20 (see FIG. 2 (2)). Adjusted.
In this state, as shown in FIG. 2 (1), since the engaging claw 31 is engaged with and locked with the predetermined engaging groove 12, the band 30 can be advanced with respect to the buckle 10, but is retracted. It is impossible.

Next, the lock mechanism by the slide piece of this invention is demonstrated.
As described above, FIG. 2 (1) shows the locked state of the engaging groove 31 of the band 30 and the engaging claw 21 of the buckle 10. At this time, the slide piece 40 is positioned on the connecting shaft 25. When the vertical pressing force acts on the other end 20B of the operation plate 20, the engagement is released.
Here, if the slide piece 40 is slid along the slide grooves 17 and 17 toward the one end portion 20 </ b> A of the operation plate 20 as shown in FIG. 1 (2), the rotation of the operation plate 20 is restricted by the slide piece 40. In this state, the other end 20B does not move even if it is pushed. FIG. 2 (3) shows the locked state of the other end 22B.
In the present embodiment, the lower surface of the slide piece 40 is set to contact the upper surface of the one end portion 20A of the operation plate 20, but the lower surface of the slide piece 40 does not necessarily contact the upper surface of the one end portion 20A of the operation plate 20. The distance between the lower surface of the slide piece 40 in the locked state and the upper surface of the one end portion 20A of the operation plate 20 is such that the rotation of the operation plate 20 is regulated so that the engagement claw 21 does not come off the engagement groove 31. Just do it.

Another embodiment of the buckle will be described with reference to FIG.
In the present embodiment, a concave hooking portion 42 is provided on the slide piece 40.
In addition, a projecting latching portion is provided on the ceiling frame 12, which makes it possible to draw the buckle and the band provided with the latching portion on the outer surface with one fingertip. .

  The buckle 10 can be made of a synthetic resin, and the connecting shaft 25 can be made of metal to increase the strength. Thereby, damage to the connecting shaft can be prevented when a strong force acts in the direction of separating the band 30 from the buckle 10.

Next, a lock mechanism using a rotating piece will be described with reference to FIG. In the buckle 10 of the present invention, the other end portion 20 </ b> B of the operation plate 20 is a pressing portion 22.
In the present embodiment, the rotating piece 50 has a length in the insertion direction of the band 30 that is longer than a length perpendicular to the band 30, and is provided on the one end portion 20 </ b> A of the operation plate 20 by a rotating shaft so as to be rotatable 90 degrees. It has been. If 90 degree rotation is ensured, there is no special restriction on the shape of the rotation piece 50.

  The ceiling frame 12 is formed with an inclined surface 62 such that a shelf 60 that receives the end of the rotating piece 50 in the longitudinal direction from the ceiling frame 12 side gradually descends to a 90 ° rotation position. The shelf 60 may be of a size that can support the rotating piece 50 from the ceiling frame 12 side.

FIG. 4 (1) shows the locking state of the engagement groove 31 of the band 30 and the engagement claw 21 of the buckle 10. At this time, the rotating piece 50 is engaged with the shelf 60 of the ceiling frame 12. When the pressing force in the vertical direction acts on the pressing portion 22 without being in the state, the engagement between the buckle 30 and the band 10 is released.
When the turning piece 50 is turned from this state, both ends of the turning piece 50 in the longitudinal direction move along the inclined surface 62 from the ceiling frame 12 side toward the bottom plate 11, and move to the one end 20 </ b> A of the operation plate 20. The engaging claw that is positioned is pushed down and meshes strongly with the engaging groove 31 of the band 30. FIG. 4 (2) is a longitudinal sectional side view of the main part showing this strong locked state.

Subsequently, a buckle using a rotating piece and an elastic piece will be described.
In the present invention, the buckle is mainly composed of a flat and cylindrical buckle body including a bottom plate, a ceiling frame facing the bottom plate, and a side plate connecting the bottom plate and the ceiling frame. The buckle body is opened with the band sliding direction as an insertion opening, and the inside thereof becomes a band insertion space having an engagement groove to be described later.
Inside the ceiling frame of the buckle in the present invention, an elastic piece of a size that fits in the frame is installed horizontally. An engaging claw that can engage with the engaging groove of the band is provided on the lower surface of one end of the elastic piece.

  The side plate is provided with pressing pieces that are pressed from both sides of the elastic piece. The end surface of the pressing piece is opposed to the opposing side of the elastic piece with an inclined surface, and the gap between the pressing piece and the elastic piece is narrowed as the angle of the inclined surface approaches the bottom plate. Further, instead of forming the end surface of the pressing piece as an inclined surface, the end surface of the elastic piece is opposed to the opposing side of the pressing piece with an inclined surface, and the angle of the inclined surface approaches the bottom plate as the angle increases. You may form so that the clearance gap with an elastic piece may spread.

Then, the effect | action of the said buckle is demonstrated.
When the band is inserted into the insertion space from the insertion port on the other end side of the elastic piece, the upper surface of the band comes into contact with the engagement claw of the elastic piece and moves forward while pushing up one end of the elastic piece. The band approach / separation position is adjusted.
In this state, since the engaging claw is engaged with and locked with the predetermined engaging groove, the band can be advanced with respect to the buckle but cannot be retracted.

Next, to retract the band from the buckle or pull it out, if you take the pressing piece with the fingertip of one hand, the elastic piece will rise along the inclined surface of the pressing piece (or elastic piece). Since the engaging claw is lifted and the engaging claw is detached from the engaging groove, the band can be freely slid. When the finger is released from the pressing piece, the pressing piece returns to the original position due to the elasticity of the synthetic resin, so that the elastic piece also returns to the original horizontal state.
The lock mechanism using the rotating piece is the same as the lock mechanism in the buckle provided with the above-described operation plate, and thus description thereof is omitted.

  In the present invention, the ceiling frame 12 is not necessarily limited to one having four sides. About the side facing the one end 20A of the operation plate 20, this can be omitted when the buckle is reduced in weight and size.

The buckle 10 of the present invention can incorporate the elements disclosed in Patent Document 1 and Patent Document 2 described above. For example, instead of the connecting shaft 25, a connecting side (not shown) that connects the upper edge portion of the operation plate 20 and the upper portion of the ceiling frame 12 may be used.
Moreover, in order to make it easy to restore the operation plate 20 to a horizontal state, a connecting member (see FIG. 1 or FIG. 3) that connects the one end portion 20A of the operation plate 20 to the ceiling frame 12 or the like facing the end plate 20 may be provided. . Further, a band presser (not shown) for preventing the band 30 from lifting can be provided in the insertion space 16.

110 Buckle 11 Bottom plate 12 Ceiling frame 13 Side plate 14 Buckle body 16 Insertion space 17 Slide groove 20 Operation plate 20A One end portion 20B of the operation plate The other end portion 21 of the operation plate 21 Engaging claw 25 Connecting shaft 30 Band 31 Engaging groove 40 Slide piece 50 Rotating piece 60 Shelf 62 Inclined surface

  The present invention relates to a buckle for locking a band or belt having an engagement groove, and particularly for products that require a relatively strong fastening force, such as athletic shoes, competition shoes, snowboard shoes, and protector locking belts. For the buckle.

Conventionally, a buckle is known in which an engagement groove is provided in a band (or belt), a hook of a buckle is elastically engaged with the groove, and the locked state can be released at any time.
In Japanese Patent No. 3989555 (Patent Document 1), the inventors of the present invention are an easy-to-manufacture and lightweight synthetic resin buckle that includes an opposing bottom plate, a ceiling frame, and both side plates that connect the two, and the interior is related. A buckle body which is a space for inserting a band having a mating groove, an engagement claw which is horizontally installed on the inner side of the ceiling frame and can be engaged with the engagement groove of the band on the lower surface of the one end, and the other end An operation plate having an upper surface as a pressing portion, and connecting the operation plate to two opposite sides of the ceiling frame at the intermediate point between the engaging claw and the pressing portion. A synthetic resin buckle that is freely swingable as a synthetic resin provided with a pair of hooking projections on the outer surface of the band and the ceiling frame, and the band can be pulled to the buckle body with a fingertip of one hand. Proposed buckle made.

  The synthetic resin buckle is very excellent in function and is optimal as a headband buckle for helmets, but in order to improve the operability in engagement / release of the operation plate, a connecting shaft that supports the operation plate is used. When it is thinned, when this is applied to a product that requires a relatively strong fastening force, such as athletic shoes, a strong force acts in the direction of pulling the band away from the buckle when the band and the buckle are locked. There was a possibility that the connecting shaft was damaged.

  In addition, in the patent No. 4005109 (Patent Document 2), the present inventors have a light and simple configuration as a band and buckle slide adjuster particularly suitable for use as clothing and the like, and the buckle portion is not conspicuous. As a slide adjuster having an appearance, a band and a buckle that engage with a hook-like engagement claw formed in a serrated engagement groove formed on the outer surface of the band and in which the band is accessible to the buckle but cannot be retracted. In the slide adjuster of the present invention, the buckle comprises a bottom plate, a ceiling frame, and both side plates connecting the two, and a buckle main body having a band insertion space inside, and is horizontally installed inside the ceiling frame, and has a bottom surface at one end. And an operation plate having an engaging claw engageable with the engaging groove of the band and having the other end as a pressing portion for releasing the engagement. And the support plate is supported by a connecting shaft that connects the both side plates at an intermediate point between the engaging claw and the pressing portion, thereby allowing the operation point to swing around the intermediate point, and the outer surface of the band. The pressing portion is provided with a pair of latching projections capable of pulling the buckle and the band with the fingertips of one hand, and the latching projections with respect to the operation plate extending from the connecting shaft to the latching projections The member which provided the member which regulates that the pressing force of a perpendicular direction acts directly on a part other than is proposed in the buckle main part.

  Since this slide adjuster is provided with a regulating member, there is no risk of inadvertent or sudden unlocking, but it is not necessary to unlock the pressing force that acts directly on the pressing part or the latching protrusion. It cannot be prevented. Further, when pulling out the buckle from the band, there is a problem that the operation is complicated because the buckle has to be pulled out while pressing the pressing portion.

Japanese Patent No. 3982955 Japanese Patent No. 4005109

It is an object of the present invention to provide a buckle with a lock mechanism that can prevent disengagement even against a pressing force that directly acts on the operation plate, in addition to being lightweight and easy to manufacture. Is.
In addition, the present invention enables easy engagement locking and disengagement only by operating the slide piece, and when the slide piece is on the connecting shaft, the band can freely approach the buckle by the action of the slide piece. Since it is impossible to move backward, there is no need to form the connecting shaft with an elastic material or use a spring for the connecting shaft, and the material of the connecting shaft can be freely selected to provide a stronger buckle. It is intended.

  The present invention relates to a buckle in which an engagement claw of a buckle can be engaged with a serrated engagement groove formed on the outer surface of the band, and the buckle includes a bottom plate, a ceiling frame, and both side plates that connect the both. And a control body having an engaging claw that is horizontally installed inside the ceiling frame and engageable with the engaging groove of the band. A slide piece that is movable in the horizontal direction at the upper part of the operation plate in a buckle that is swingable about the intermediate point as a fulcrum by supporting the operation plate with a connecting shaft that connects the two side plates at the intermediate point. Is installed on the buckle body, and when the slide piece is on the connecting shaft, the band is accessible to the buckle but cannot be retracted, and the slide piece is moved to one end side of the operation plate. Before Rocking the operation plate is restricted, in a state where the slide piece is moved to the other end side of the operation plate, wherein the engagement is released.

It is preferable that a latching portion is provided on the slide piece.
It is preferable that a latching portion is provided on the ceiling frame so that the buckle and the band can be drawn with a fingertip of one hand.

  It is preferable that a slide groove for guiding the movement of the slide piece and for determining the position of the slide piece in the upper part of the operation plate is provided inside the ceiling frame.

  The present invention relates to a buckle in which the engagement claw of the buckle is engaged with a serrated engagement groove formed on the outer surface of the band, and the band can be retracted but cannot be retracted in the locked state. The buckle is composed of an opposing bottom plate, a ceiling frame, and both side plates that connect the two, and a buckle main body having a band insertion space inside, and is horizontally installed inside the ceiling frame. An operation plate having an engaging claw engageable with the groove and having the other end as a pressing portion for releasing the engagement. In a buckle that is swingable with the intermediate point as a fulcrum by being supported by a connecting shaft to be connected, a rotating piece whose length in one direction is longer than the length in a direction perpendicular thereto is placed on one end of the operation plate. It is installed so that it can rotate 90 degrees, and the rotating piece A shelf that receives at least one end in the longitudinal direction from the ceiling frame side is formed on the ceiling frame, and the swing of the operation plate is restricted in an engaged state between the shelf and one end of the rotating piece. It is characterized by being.

  The present invention relates to a buckle in which the engagement claw of the buckle is engaged with a serrated engagement groove formed on the outer surface of the band, and the band can be retracted but cannot be retracted in the locked state. The buckle is composed of an opposing bottom plate, a ceiling frame, and both side plates that connect the two, and a buckle main body having a band insertion space inside, and is horizontally installed inside the ceiling frame. By comprising an elastic piece having an engaging claw that can be engaged with the groove and a pressing piece that is installed on the both side plates and presses the elastic piece from both sides, and the pressing piece is taken with the fingertip of one hand In the buckle that is capable of releasing the engagement between the engagement groove and the engagement pawl by repelling the elastic piece, a rotating piece having a length in one direction longer than a length in a direction perpendicular thereto is provided on the elastic piece. And can be rotated by 90 degrees, and the rotating piece A shelf that receives at least one end in the longitudinal direction from the ceiling frame side is formed on the ceiling frame, and the elastic piece is restricted from being elastic in an engaged state between the shelf and one end of the rotating piece. It is characterized by being.

The buckle of the present invention can prevent disengagement even against a pressing force that directly acts on the operation plate.
In addition, the buckle provided with the slide piece can be easily locked and released only by operating the slide piece. When the slide piece is on the connecting shaft, the band is attached to the buckle by the action of the slide piece. Because it is accessible but cannot be retracted, there is no need to form the connecting shaft from an elastic material or use a spring for the connecting shaft, and the material of the connecting shaft can be freely selected to provide higher strength. A buckle can be provided.
Therefore, this buckle is optimally applied to products that require a relatively strong fastening force such as athletic shoes.

1 is a perspective view of a buckle 10. FIG. 3 is a longitudinal sectional side view of a main part showing an engaged state of a buckle 10 and a band 30. It is a perspective view of other embodiment of the buckle. FIG. 6 is a longitudinal sectional side view of a main part showing a lock mechanism by a rotating piece 60.

Hereinafter, embodiments of a buckle with a lock mechanism according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a buckle 10. In these drawings, the buckle 10 is a flat plate comprising a bottom plate 11, a ceiling frame 12 facing the bottom plate 11, and side plates 13 and 13 connecting the bottom plate 11 and the ceiling frame 12. The main body is constituted by the cylindrical buckle body 14. The buckle body 14 is opened in the band sliding direction as insertion holes 15, 15, and the inside thereof becomes an insertion space 16 of the band 30 having an engagement groove described later.

  In the present embodiment, the length of the bottom plate 11 in the longitudinal direction (the sliding direction of the band) is made longer than the length of the ceiling frame 12 in the longitudinal direction, whereby the connected body of the buckle 10 (that is, an athletic shoe band or the like). The band can be easily inserted and the band can be inserted smoothly. Further, the same effect can be obtained by configuring the ceiling frame 12 with a flat plate and extending the ceiling frame 12 facing the one end portion 20 </ b> A of the operation plate 20 horizontally in the direction opposite to the operation plate 20.

  On the inner side of the ceiling frame 12, an operation plate 20 having a size that fits in the ceiling frame 12 is horizontally installed. An engaging claw 21 (see FIG. 2 to be described later) that can engage with the engaging groove of the band 30 protrudes from the lower surface of the one end portion 20 </ b> A of the operation plate 20. By making the operation plate 20 slightly lower than the ceiling frame 12, it is possible to prevent the one end portion 20A or the other end portion 20B of the operation plate 20 from being inadvertently pushed down.

A connecting shaft 25 is formed at an intermediate portion in the longitudinal direction of the operation plate 20, and this connecting shaft 25 is supported on the upper inner walls of the side plates 13 and 13.
In this embodiment, the cross section of the connecting shaft 25 is rectangular, but it can be circular, elliptical, or other various cross sectional shapes. It is desirable that the connecting shaft 25 pivotally supports the operation plate 20 and is made as thin as possible in order to ensure smooth operability. Just do it. Note that the connecting shaft 25 is not limited to the side plates 13 and 13, and even if connected to two sides of the facing ceiling frame 12, the connecting shaft 25 can exhibit the same operation as described below.

  Slide grooves 17 and 17 for sliding the slide piece 40 are formed inside the ceiling frame 12 of the buckle 10. FIGS. 1B and 1C are perspective views showing a state in which the slide piece 40 moves along the slide grooves 17 and 17. On the surface of the slide piece 40, a latching portion 42 is provided so as to protrude upward. Although the latching part 42 does not necessarily need to be provided in the slide piece 40, the slide operation of the slide piece 40 can be made easy by providing this. In the present embodiment, the slide piece has a rectangular shape, but it does not have to be rectangular.

Next, the operation of the buckle 10 will be described with reference to FIG. FIG. 2A is a longitudinal sectional side view of the main part showing an engaged state of the buckle 10 and the band 30.
In FIG. 2A, the band 30 is inserted into the insertion space 16 of the buckle 10, and the engagement claw 21 of the buckle 10 is engaged with the engagement groove 31 formed on the outer surface of the band 30. The engagement groove 31 has a sawtooth cross-sectional shape in the sliding direction, that is, a tapered surface that gradually becomes deeper in the traveling direction of the band 30 and a wall surface that rises substantially perpendicularly from the deepest position.

When the slide piece 40 is positioned on the connecting shaft 25, the band 30 is moved into the insertion space 16 from the insertion port 15 on the other end 20 </ b> B side (left side in FIG. 2) of the operation plate 20. The upper surface of the operation plate 20 comes into contact with the engaging claw 21 of the operation plate 20 and moves forward while pushing up one end portion 20A of the operation plate 20 (see FIG. 2 (2)). Adjusted.
In this state, as shown in FIG. 2 (1), since the engaging claw 21 is engaged with and locked with the predetermined engaging groove 31 , the band 30 can be advanced with respect to the buckle 10, but it is retracted. It is impossible.

Next, the lock mechanism by the slide piece of this invention is demonstrated.
As described above, FIG. 2 (1) shows the locked state of the engaging groove 31 of the band 30 and the engaging claw 21 of the buckle 10. At this time, the slide piece 40 is positioned on the connecting shaft 25. When the vertical pressing force acts on the other end 20B of the operation plate 20, the engagement is released.
Here, if the slide piece 40 is slid along the slide grooves 17 and 17 toward the one end portion 20 </ b> A of the operation plate 20 as shown in FIG. 1 (2), the rotation of the operation plate 20 is restricted by the slide piece 40. In this state, the other end 20B does not move even if it is pushed. FIG. 2 (3) shows the locked state of the other end 20B .
In the present embodiment, the lower surface of the slide piece 40 is set to contact the upper surface of the one end portion 20A of the operation plate 20, but the lower surface of the slide piece 40 does not necessarily contact the upper surface of the one end portion 20A of the operation plate 20. The distance between the lower surface of the slide piece 40 in the locked state and the upper surface of the one end portion 20A of the operation plate 20 is such that the rotation of the operation plate 20 is regulated so that the engagement claw 21 does not come off the engagement groove 31. Just do it.

Next, in order to retract or pull out the band 30 from the buckle 10, as shown in FIG. 1 (3), the slide piece 40 is placed on the other end 20B side of the operation plate 20 along the slide grooves 17 and 17. As shown in FIG. 2 (4), when the slide is made, the operation plate 20 rotates around the connecting shaft 25, so that the engaging claw 21 located on the opposite side is lifted, and the engaging claw 21 is engaged with the engaging groove Since it deviates from 31, band 30 can be slid freely. When the slide piece 40 is slid along the slide grooves 17 and 17 onto the connecting shaft 25, the operation plate 20 returns to the original horizontal state.

Another embodiment of the buckle will be described with reference to FIG.
In the present embodiment, a concave hooking portion 42 is provided on the slide piece 40.
In addition, a projection-like latching portion 18 is provided on the ceiling frame 12, which makes it possible to draw the buckle and the band provided with the latching portion on the outer surface with one fingertip. Become.

  The buckle 10 can be made of a synthetic resin, and the connecting shaft 25 can be made of metal to increase the strength. Thereby, damage to the connecting shaft can be prevented when a strong force acts in the direction of separating the band 30 from the buckle 10.

Next, a lock mechanism using a rotating piece will be described with reference to FIG.
In the buckle 10 of the present invention, the other end portion 20 </ b> B of the operation plate 20 is a pressing portion 22.
In the present embodiment, the rotating piece 50 has a length in the insertion direction of the band 30 that is longer than a length perpendicular to the band 30, and is provided on the one end portion 20 </ b> A of the operation plate 20 by a rotating shaft so as to be rotatable 90 degrees. It has been. If 90 degree rotation is ensured, there is no special restriction on the shape of the rotation piece 50.

  The ceiling frame 12 is formed with an inclined surface 62 such that a shelf 60 that receives the end of the rotating piece 50 in the longitudinal direction from the ceiling frame 12 side gradually descends to a 90 ° rotation position. The shelf 60 may be of a size that can support the rotating piece 50 from the ceiling frame 12 side.

FIG. 4 (1) shows the locking state of the engagement groove 31 of the band 30 and the engagement claw 21 of the buckle 10. At this time, the rotating piece 50 is engaged with the shelf 60 of the ceiling frame 12. When the pressing force in the vertical direction acts on the pressing portion 22 without being in the state, the engagement between the buckle 30 and the band 10 is released.
When the turning piece 50 is turned from this state, both ends of the turning piece 50 in the longitudinal direction move along the inclined surface 62 from the ceiling frame 12 side toward the bottom plate 11, and move to the one end 20 </ b> A of the operation plate 20. The engaging claw that is positioned is pushed down and meshes strongly with the engaging groove 31 of the band 30. FIG. 4 (2) is a longitudinal sectional side view of the main part showing this strong locked state.

Subsequently, a buckle using a rotating piece and an elastic piece will be described.
Inside the ceiling frame of the buckle in the present invention, an elastic piece of a size that fits in the frame is installed horizontally. An engaging claw that can engage with the engaging groove of the band is provided on the lower surface of one end of the elastic piece.

  The side plate is provided with pressing pieces that are pressed from both sides of the elastic piece. The end surface of the pressing piece is opposed to the opposing side of the elastic piece with an inclined surface, and the gap between the pressing piece and the elastic piece is narrowed as the angle of the inclined surface approaches the bottom plate. Alternatively, the end face of the elastic piece may be opposed to the opposite side of the pressing piece with an inclined surface so that the gap between the pressing piece and the elastic piece increases as the angle of the inclined surface approaches the bottom plate. .

Then, the effect | action of the said buckle is demonstrated.
When the band is inserted into the insertion space from the insertion port on the other end side of the elastic piece, the upper surface of the band comes into contact with the engagement claw of the elastic piece and moves forward while pushing up one end of the elastic piece. The band approach / separation position is adjusted.
In this state, since the engaging claw is engaged with and locked with the predetermined engaging groove, the band can be advanced with respect to the buckle but cannot be retracted.

Next, to retract the band from the buckle or pull it out, if you take the pressing piece with the fingertip of one hand, the elastic piece will rise along the inclined surface of the pressing piece (or elastic piece). Since the engaging claw is lifted and the engaging claw is detached from the engaging groove, the band can be freely slid. When the finger is released from the pressing piece, the pressing piece returns to the original position due to the elasticity of the synthetic resin, so that the elastic piece also returns to the original horizontal state.
The lock mechanism using the rotating piece is as described above.

  In the present invention, the ceiling frame 12 is not necessarily limited to one having four sides. About the side facing the one end 20A of the operation plate 20, this can be omitted when the buckle is reduced in weight and size.

The buckle 10 of the present invention can incorporate the elements disclosed in Patent Document 1 and Patent Document 2 described above. For example, instead of the connecting shaft 25, a connecting side (not shown) that connects the upper edge portion of the operation plate 20 and the upper portion of the ceiling frame 12 may be used.
Moreover, in order to make it easy to restore the operation plate 20 to a horizontal state, a connecting member (see FIG. 1 or FIG. 3) that connects the one end portion 20A of the operation plate 20 to the ceiling frame 12 or the like facing the end plate 20 may be provided. . Further, a band presser (not shown) for preventing the band 30 from lifting can be provided in the insertion space 16.

10 Buckle 11 Bottom plate 12 Ceiling frame 13 Side plate 14 Buckle body 16 Insertion space 17 Slide groove 20 Operation plate 20A One end portion 20B of the operation plate 21 Other end portion 21 of the operation plate Engagement claw 25 Connection shaft 30 Band 31 Engagement groove 40 Slide piece 50 Rotating piece 60 Shelf 62 Inclined surface

Claims (6)

A buckle capable of engaging the engagement claw of the buckle with a serrated engagement groove formed on the outer surface of the band,
The buckle includes a bottom plate, a ceiling frame, and both side plates connecting the two, and a buckle main body having a band insertion space therein, and is horizontally installed inside the ceiling frame. And an operation plate having an engaging claw that can be engaged with the mating groove. The operation plate is supported by a connecting shaft that connects the two side plates at an intermediate point to be swingable about the intermediate point. In the buckle,
A slide piece that can move horizontally on the upper part of the operation plate is installed on the buckle body, and when the slide piece is on the connecting shaft, the band is accessible to the buckle but cannot be retracted, The swing of the operation plate is restricted when the slide piece is moved to one end of the operation plate, and the engagement is released when the slide piece is moved to the other end of the operation plate. A buckle characterized by that.   The buckle according to claim 1, wherein a latching portion is provided on the slide piece.   The buckle according to claim 1, wherein a hooking portion is provided on the ceiling frame so that the buckle and the band can be drawn with a fingertip of one hand.   The slide groove for guiding the movement of the slide piece and determining the position of the slide piece in the upper part of the operation plate is provided inside the ceiling frame. Buckle. A buckle that engages with an engagement claw of a buckle in a serrated engagement groove formed on the outer surface of the band, and in the locked state, the band is accessible to the buckle but cannot be retracted,
The buckle includes a bottom plate, a ceiling frame, and both side plates connecting the two, and a buckle main body having a band insertion space therein, and is horizontally installed inside the ceiling frame. An operating plate having an engaging claw engageable with the mating groove and having the other end as a pressing portion for releasing the engagement; In the buckle that can swing around the intermediate point by supporting it with the connecting shaft connecting
A rotating piece whose length in one direction is longer than the length in a direction perpendicular thereto is rotatably installed on one end portion of the operation plate, and at least one end portion in the longitudinal direction of the rotating piece. Is formed on the ceiling frame, and swinging of the operation plate is restricted in an engaged state between the shelf and one end of the rotating piece. Buckle to do. A buckle that engages with an engagement claw of a buckle in a serrated engagement groove formed on the outer surface of the band, and in the locked state, the band is accessible to the buckle but cannot be retracted,
The buckle includes a bottom plate, a ceiling frame, and both side plates connecting the two, and a buckle main body having a band insertion space therein, and is horizontally installed inside the ceiling frame. It is composed of an elastic piece having an engaging claw that can be engaged with the mating groove, and a pressing piece that is installed on the both side plates and presses the elastic piece from both sides, and the pressing piece is taken with the fingertip of one hand. In the buckle that can release the engagement between the engagement groove and the engagement claw by repelling the elastic piece by
A rotating piece whose length in one direction is longer than the length in a direction perpendicular thereto is rotatably installed on the elastic piece, and at least one end in the longitudinal direction of the rotating piece is attached to the ceiling frame. A buckle characterized in that a shelf received from the side is formed on the ceiling frame, and the elastic piece is restricted from being elastic in an engaged state between the shelf and one end of the rotating piece.