JPH0619521U - buckle - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a buckle in which the holding force for supporting the belt is increased and the holding state of the belt is not released carelessly. [Structure] The buckle 10 is composed of a base portion 12 and a belt pressing portion 14, and the base portion 12 is formed in a substantially U-shape and pivotally supports the belt pressing portion 14.
The operation cam 42 of the belt pressing portion 14 has a locking cam portion 44.
And a recess 70 is formed in the bottom surface 50 so as to face the locking cam portion 44. Accordingly, when the belt 22 is clamped, the base portion 12 and the belt pressing portion 14 are engaged with each other by the attachment / detachment piece 58, and the belt 22 is clamped by the locking cam portion 44 and the concave portion 70 and clamped in a curved state. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a buckle that holds a belt between a base portion that supports the belt and a belt holding portion that is rotatably supported by the base portion.

[0002]

[Prior art]

 Conventionally, a buckle as a fastening tool such as a belt has been manufactured so as to have a structure and a function according to the purpose of use of the buckle.

However, in the conventional buckle, if the locking force at the time of tightening the belt or the like is increased so as to maintain an accurate tightened and locked state, releasing the buckle or inserting / removing the belt or the like becomes complicated. Further, it has a drawback that the structure is complicated and the buckle itself is bulky. In addition, it is difficult to maintain the locked state of the belt when the buckle is made thin and compact by facilitating the insertion / removal operation of the belt or the release of the buckle, and the belt is unexpectedly pulled out and loosened. Had a tendency.

In order to address this, for example, a buckle disclosed in Japanese Utility Model Laid-Open No. 63-140207 has been proposed.

As shown in FIG. 5, the buckle 100 is composed of a buckle body 102 molded by injection blow and a stopper piece 104. The belt 106 is sandwiched between the buckle body 102 and the stopper piece 104. It has become.

As shown in FIG. 6, the buckle body 102 is provided in parallel with the side plates 108 that face each other with the bottom plate 110 in between, the mounting shaft 112 that spans the side plates 108, and the mounting shaft 112. The engaging shaft 126 is integrally formed. In addition, each side plate 108 is formed with a shaft hole 114 that axially supports the shaft rod 118, and tapered grooves 116 are provided on the opposite surfaces of the upper edges of the side plates 108 toward the shaft hole 114. ing.

Further, the substantially L-shaped stopper piece 104 has shaft rods 118 formed at both ends of the bearing portion 120, which are axially supported by the shaft hole 114 through the tapered grooves 116. An operating plate portion 122 extends from the bearing portion 120, and a locking cam portion 124 is integrally provided from the bearing portion 120 in a direction directly intersecting with the operating plate portion 122. By inserting the shaft rod 118 of the stopper piece 104 into the shaft hole 114 through the tapered groove 116, the bearing portion 120 is axially supported by the shaft hole 114, and the elasticity of the facing side plate 108 is increased. It is urged by force and the shaft support state is maintained.

By the way, as shown in FIG. 7, in the belt locking operation by the buckle 100, the operation plate portion 122 resists the biasing force of the side plate 108 in the direction of the engaging shaft 126 (arrow Y in FIG. 7). By rotating the locking cam portion 124 in the direction), the locking cam portion 124 rotates in the direction of the bottom plate 110 and presses the belt 106 so as to be sandwiched by the bottom plate 110. Therefore, even when an external force is applied to the slackening direction of the belt 106 (arrow F1 direction in FIG. 7) or an external force is applied to the operation plate 122 in the clockwise direction (opposite to the arrow Y direction in FIG. 7), It is possible to maintain the sandwiched state.

[0009]

[Problems to be solved by the device]

 However, in the buckle 100 described above, the belt 106 presses the surface of the belt 106 placed on the flat bottom plate 110 against the bottom plate 110 by the locking cam portion 124 to sandwich it. In other words, the belt 106 is sandwiched between the bottom plate 110 and the locking cam portion 124 by point contact.

Therefore, in order to securely lock the belt 106, it is necessary to apply the pressing force of the locking cam portion 124 at a right angle to the surface of the bottom plate 110. Therefore, if the pressing position of the locking cam portion 124 is set to be slightly deviated, the pressing force decreases, which causes the belt 106 to come loose.

When a large external force is applied to the belt 106 in the F2 direction (the arrow F2 direction in FIG. 7), the operation plate portion 122 rotates in the direction opposite to the Y direction against the urging force, There is a possibility that the locked state of the belt 106 may be released. Further, the rotation of the operation plate portion 122 is further facilitated because the operation plate portion 122 does not have a stopper function.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a buckle in which the holding force for holding a belt is increased and the holding state of the belt is not released carelessly.

[0013]

[Means for Solving the Problems]

 The invention according to claim 1 is a buckle having a base portion for supporting a belt, and a belt pressing portion rotatably supported by the base portion for sandwiching the belt with the base portion. A convex portion provided on any one of the belt pressing portions and protruding toward the other; and a concave portion provided on the base portion or the belt pressing portion and pressed by the convex portion to sandwich the belt in a curved shape. Is provided.

According to a second aspect of the present invention, there is provided an attaching / detaching means provided on the opposite side of the shaft supporting portion of the base portion and the belt holding portion to detachably engage the base portion and the belt holding portion. Is characterized by.

[0015]

[Action]

 In the buckle of the present invention as set forth in claim 1, by rotating the belt pressing portion pivotally supported on the base portion toward the base portion, the convex portion of the belt pressing portion enters into the concave portion formed on the base portion, and the convex portion is formed. The belt is sandwiched between the recess and the recess.

As a result, the sandwiched belt is pressed by the convex portion and enters the concave portion in a bent state. In other words, since the belt is in surface contact over the entire inner surface of the recess, the frictional force becomes large and a reliable gripping force can be obtained.

In the buckle of the present invention as set forth in claim 2, when the belt is clamped between the convex portion and the concave portion, the base portion and the belt pressing portion are detachably engaged by the attaching / detaching means.

With this, the outer end portions of the belt pressing portion and the base portion are engaged with each other by the attaching / detaching means, so that the locked state of the belt is not accidentally released.

[0019]

【Example】

 An embodiment of the buckle of the present invention will be described with reference to FIGS.

As shown in FIG. 1, the buckle 10 is composed of a base portion 12 made of acetal resin (homopolymer) and a belt holding portion 14, and the belt 22 is held between the base portion 12 and the belt holding portion 14. It is supposed to be done.

The base portion 12 is provided with side walls 18 facing each other with the bottom portion 16 interposed therebetween, and is formed in a substantially U-shape. On the outer surface of each side wall 18, a plurality of rectangular slip-fastening portions 68 are projected at regular intervals. Opposing guide walls 20 are formed on the bottom portion 16 in parallel with the side walls 18, and a belt 22 is inserted between the guide walls 20. Further, a taper surface that gradually widens outward is formed at one end of the guide wall 20 so that the belt 22 can be easily inserted between the guide walls 20.

As shown in FIGS. 2 and 4, an axial groove 32 for die cutting is provided in the inner surface of the side wall 18 in the width direction, and a tip end thereof has a semicircular shape and an axial rod 38 described later. A shaft hole 31 for pivotally supporting the shaft is formed. Further, an inner corner portion of the upper edge 28 of the side wall 18 is cut out to form a tapered groove 30.

As shown in FIG. 1, a substantially quadrangular attachment / detachment bar 34 is laid across the end of the side wall 18, and a central portion in the longitudinal direction of the attachment / detachment bar 34 has an upper outer side. A curved notch 36 is formed in an oblique direction.

As shown in FIG. 3, the belt pressing portion 14 is composed of a locking cam portion 44 and an operating piece 42 and is substantially L-shaped. The locking cam portion 44 projects from the bearing portion 40 in a direction orthogonal to the operation piece 42. The locking cam portion 44 is narrowed from the bearing portion 40 toward the front end thereof and has a substantially wedge shape, and as shown in FIG. 4, the width of the locking cam portion 44 is between the guide walls 20. It is smaller than the width dimension. A shaft rod 38 is projectingly provided at both ends in the width direction of the bearing portion 40 of the belt pressing portion 14, and is pivotally supported in the shaft hole 31. Further, the shaft rod 38 is provided with an oblique cutout portion 48 extending outward from the central portion.

As a result, the cutout portion 48 of the shaft rod 38 is brought into surface contact with the inside of the tapered groove 30 of the base portion 12, and the shaft rod 38 is pressed toward the shaft groove 32 (in the direction of arrow A in FIG. 4), whereby the shaft rod is pressed. 38 is fitted in the shaft hole 31 so that the belt pressing portion 14 can be rotatably supported.

As shown in FIG. 1, the bottom surface 50 on which the belt 22 is supported is formed with a curved concave portion 70 that curves outward. The recess 70 is formed at a position facing the tip of the locking cam portion 44 when the belt 22 is clamped, and the locking cam portion 44 can clamp the belt 22 in a curved state.

As shown in FIGS. 1 and 2, a detachable piece 58 as a detachable means having a substantially U-shape in a side view jutting out in a cantilever manner from both ends in the width direction near the tip of the operation piece 42. There is. The attachment / detachment piece 58 is folded back from the bent portion 60 toward the tip flat plate portion 56 of the operation piece 42, and elastically deformed in the longitudinal direction of the operation piece 42 and the operation piece 42 with the bent portion 60 and the trunk portion 54 as fulcrums. It is possible. Further, a protrusion 66 that protrudes in parallel with the operation piece 42 is formed at the tip of the attachment / detachment piece 58. As a result, when the belt pressing portion 14 is rotated in the Y direction (arrow Y direction in FIG. 2) toward the base portion 12, the bending portion 60 and the trunk portion 54 are elastically deformed, and the protrusion 66 passes through the attachment / detachment bar 34. After that, it elastically returns and the upper surface of the projection 66 is locked to the lower surface of the attachment / detachment bar 34.

Further, a hanging plate 62 that connects the tip end portions of the pair of detachable pieces 58 is provided. The front end portion 62A of the hanging plate 62 projects outward from the front end flat plate portion 56. As a result, the front end portion 62A of the hanging plate 62 is pressed by the finger to elastically deform the attachment / detachment piece 58 so that the engagement state between the protrusion 66 and the attachment / detachment bar 34 can be released.

Next, the operation of this embodiment will be described. In the buckle of this embodiment, as shown in FIG. 3, by rotating the belt pressing portion 14 pivotally supported on the base portion 12 toward the base portion 12 in the Y direction, the locking cam portion of the belt pressing portion 14 is rotated. 44 enters the concave portion 70 formed in the base portion 12, and the belt 22 is sandwiched between the locking cam portion 44 and the concave portion 70. At this time, the base portion 12 and the belt pressing portion 14 are engaged with each other by the detachable piece 58.

As a result, the sandwiched belt 22 is pressed by the locking cam portion 44 and enters the concave portion 70 in a bent state. In other words, since the belt 22 makes surface contact over the entire inner surface of the recess 70, the frictional force is increased and a reliable clamping force is obtained. Further, since the outer end portions of the belt pressing portion 14 and the base portion 12 are engaged with each other by the attachment / detachment piece 58, the locked state of the belt 22 is not inadvertently released.

In the buckle of this embodiment, the bottom surface 50 has a plurality of recessed portions 70, and the locking cam portions 44 corresponding to the plurality of recessed portions 70 are formed on the operation piece 42, so that the belt 22 has a continuous wavy shape. It may be sandwiched. Further, in this embodiment, the locking cam portion 44 has a substantially wedge shape and the concave portion 70 has a curved shape so that the belt 22 is sandwiched between the locking cam portion 44 and the concave portion 70 in a curved shape. The shape is not limited, and may be any shape that allows the belt 22 to be sandwiched between the surfaces.

Further, in the buckle of the present embodiment, the substantially U-shaped attachment / detachment piece 58 is elastically deformed to engage the base portion 12 and the belt pressing portion 14, but the attachment / detachment piece 58 has a different shape. Including, it is not limited to the structure.

[0033]

[Effect of device]

 Since the buckle of the present invention has the above-mentioned configuration, it has an excellent effect that the holding force for supporting the belt is increased and the holding state of the belt is not released carelessly.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a buckle according to the present invention does not clamp a belt.

FIG. 2 is a cross-sectional view showing a state in which the buckle of FIG. 1 is cut along the longitudinal direction of the belt.

FIG. 3 is a cross-sectional view showing a state in which the buckle of FIG. 1 holds the belt and is cut along the longitudinal direction of the belt.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a perspective view showing a state in which a buckle according to a conventional example holds a belt.

FIG. 6 is an exploded perspective view showing the buckle of FIG.

7 is a cross-sectional view showing a state in which the buckle of FIG. 5 is cut along the longitudinal direction of the belt.

[Explanation of symbols]

 10 Buckle 12 Base 14 Belt Holding Part 22 Belt 44 Locking Cam Part (Convex Part) 58 Attachment / Detachment Part (Detachment Means) 70 Recess

Claims (2)

[Scope of utility model registration request] 1. A buckle comprising: a base for supporting a belt; and a belt retainer rotatably supported by the base and sandwiching the belt with the base, the buckle comprising the base or the belt retainer. A convex portion provided on either one of the convex portions and projecting toward the other, and a concave portion provided on the base portion or the belt pressing portion to press the convex portion to sandwich the belt in a curved shape are provided. Buckle to be. 2. The attaching / detaching means provided on the opposite side of the shaft supporting portion of the base portion and the belt pressing portion to detachably engage the base portion and the belt pressing portion. Buckle described in.