JP2004065773A - buckle - Google Patents

Abstract

An object of the present invention is to provide a buckle that can solve the problem of damage and durability of an insertion piece.
A male member and a female member into which the male member is inserted and locked. The male member 10 includes a male member main body 11, an elastically deformable insert 15 formed on the male member main body, a locked surface 18 formed on the insert, and an insert formed on the insert. And an operation unit 17 for elastically deforming the piece. The female member 20 is engaged with the female member main body 21, the insertion hole 23 formed in the female member main body, into which the insertion piece of the male member is inserted, and the locked surface of the insertion piece formed in the insertion hole. A locking surface 27 for locking the male member to the female member, and an opening 25 for exposing the operating portion of the male member to the outer surface when the locked surface of the insertion piece is locked to the locking surface. Have. The opening is cut out from the side wall 21A toward the inside of the front and back walls 21B and 21C, and protrudes into the side wall side opening edge at the side wall side opening edge 26B in the peripheral wall of the female member in which the insertion hole is formed. The projection 28 is provided.
[Selection] Fig. 2

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a buckle including a male member and a female member. More specifically, the present invention relates to a buckle used for connecting and separating both ends of one string-like member or two strings-like members.
[0002]
[Background Art]
A buckle is used as a means for connecting and separating both ends of one string-like member or two strings-like members.
A conventional buckle includes a plug and a socket into which the plug is inserted and locked. The plug includes a plug body and a pair of insertion pieces formed parallel to each other on both sides of the plug body. An insertion guide surface is formed at a distal end portion of each insertion piece, and an operation portion and a locked surface are formed at the base end side of the insertion piece with respect to the insertion guide surface. The socket includes a socket body and an insertion hole formed in the socket body and into which a plug is inserted. In the insertion hole, a contact portion is formed on the inlet side to abut the insertion guide surface of the insertion piece to elastically displace the insertion piece in a direction substantially perpendicular to the insertion direction (inside each other). At the same time, a locking surface for locking the locked surface and an opening for exposing the operating portion of the insertion piece are formed on the back side in the insertion direction from the contact portion.
[0003]
In such a configuration, in order to lock the plug in the socket, the insertion piece of the plug is inserted into the insertion hole of the socket. Then, since the insertion guide surface formed at the tip of each insertion piece abuts on the contact portion of the socket, each insertion piece is inserted while being elastically deformed inside each other. Eventually, when the locked surface of each insertion piece exceeds the locking surface formed on the socket, each insertion piece that has been elastically deformed inward returns to the outside elastically. The stop surface is locked to a locking surface formed on the socket. In this state, the operating part of the plug is exposed to the outer surface from the opening of the socket.
In order to remove the plug from the socket, the operating portions of the plug exposed on the outer surface from the opening of the socket are pressed inward each other, and the insertion piece is elastically deformed inward. Then, the locked surface of each insertion piece is disengaged from the locking surface formed on the socket. In this state, when the plug is pulled out of the socket, the plug comes off the socket.
[0004]
[Problems to be solved by the invention]
By the way, in the conventional buckle, the opening of the socket where the operation part of the plug is exposed is cut out from the side wall toward the inside of the front and back walls of the peripheral wall of the socket, and in particular, the opening on the side wall is larger than the inside. In addition, the front and back walls were formed in an inclined shape.
Therefore, when pressing the operating parts of the plug exposed from the opening of the socket to each other when removing the plug from the socket, the pressing finger enters the opening deeper than necessary and the plug insertion piece This resulted in large elastic deformation.
As a result, there is a problem that the insertion piece of the plug is damaged (broken) or a problem remains in durability.
[0005]
An object of the present invention is to solve such problems and to provide a buckle that can solve the problems of damage and durability of the insertion piece.
[0006]
[Means for Solving the Problems]
The buckle according to the present invention includes a male member and a female member into which the male member is inserted and locked. The male member includes a male member main body and an elastically deformable insertion formed in the male member main body. A piece, a locked surface formed on the insertion piece, and an operating portion formed on the insertion piece to elastically deform the insertion piece, wherein the female member is a female member body, An insertion hole formed in the member main body, into which the insertion piece of the male member is inserted, and engaged with the locked surface of the insertion piece formed in the insertion hole to lock the male member to the female member. A locking surface, and an opening for exposing an operating portion of the male member to an outer surface when the locked surface of the insertion piece is locked to the locking surface, wherein the male member is a female member. In a state where the male member and the female member are released from the opening of the female member in a state where the male member and the female member are The opening is cut out from the side wall toward the inside of the front and back walls of the peripheral wall of the female member main body in which the insertion hole is formed, and the side wall side opening edge is formed in the side wall side opening. It is characterized by having a protruding projection.
[0007]
In such a configuration, in order to lock the male member to the female member, the insertion piece of the male member is inserted into the insertion hole of the female member. Then, the locked surface of the insertion piece is locked to the locking surface of the female member, and the male member is inserted and locked to the female member.
In this state, that is, in a state where the male member is inserted and locked to the female member, the male member is removed from the female member by pressing the operating portion of the male member exposed from the opening of the female member. And release the locked state between the female member. At this time, when the operating portion of the male member is pressed, since the projection is formed in the opening of the female member, the finger to be pressed hits the projection and does not penetrate deep into the opening. The problem of piece damage and durability can be solved. That is, since the insertion piece of the male member is not elastically deformed more than necessary, the damage of the insertion piece is small and the durability can be improved.
[0008]
In the above, it is preferable that the protrusion is formed in a curved shape that is continuous from the cut edge of the front and back walls and is continuous with the side wall.
According to such a configuration, since the protruding portion is formed in a curved surface shape that is continuous from the notch edge of the front and back walls to the side wall, even if the finger abuts on the protruding portion, the finger is concentrated in one place. No oppression. In addition, since the projection has a curved shape, it is possible to prevent the projection from being damaged.
[0009]
Further, the locking surface is provided at an opening edge of the side wall-side opening edge near the entrance of the insertion hole, and the protrusion is provided at an entrance side of the insertion hole of the side wall-side opening edge. Is desirably provided at the opening edge on the opposite side.
According to such a configuration, of the side wall side opening edge, the locking surface is provided on the side wall side opening edge near the entrance of the insertion hole, and the projection is formed on the side wall side opening edge opposite to the insertion side of the insertion hole. When the operation portion of the male member is pressed by a finger to release the locked state between the male member and the female member, the portion near the locking surface of the operation portion is pressed by the belly of the finger because the portion is provided. Therefore, even if the pushing amount of the finger is small, the locked state between the male member and the female member can be released.
[0010]
The male member includes a pair of insertion pieces projecting in parallel from each other on both sides of the male member main body, and the locked surface and the operation unit are provided outside each of the insertion pieces, respectively. The female member preferably has the locking surface and the opening on both side walls of the male member main body.
According to such a configuration, since the male member is provided with the pair of insertion pieces having the locked surface and the operation portion on the outside, the tip of the pair of insertion pieces is inserted in the female member. The locked surfaces formed on the female member are locked to the locking surfaces of the female member, respectively, so that the male member can be locked to the female member in a stable state. Also, when the male member is detached from the female member, the operating portions formed on the outside of the pair of insertion pieces may be pressed inward to each other, so that the male member is easily detached from the female member.
[0011]
Preferably, the male member and the female member are each integrally formed of a synthetic resin.
According to such a configuration, since the male member and the female member are each integrally formed of a synthetic resin, they can be mass-produced at low cost.
[0012]
Preferably, the male member and the female member each have a string mounting hole for inserting and locking the string-shaped member.
According to such a configuration, since the male member and the female member are provided with the string mounting holes, respectively, the male member and the female member are simply inserted and locked in the string mounting holes. The string-shaped member can be easily connected and fixed to the member. Therefore, it is excellent in usability.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 4 show a buckle according to the present embodiment. As shown in FIG. 1, the buckle 1 of the present embodiment is for connecting and separating the ends 2 and 3 of the string-shaped member, and is similar to a male member 10 integrally formed of a synthetic resin. And a female member 20 into which the male member 10 is inserted and locked. The material of the male member 10 and the female member 20 is not limited to a synthetic resin, but may be other materials such as a metal.
[0014]
As shown in FIGS. 2 and 3, the male member 10 includes a male member main body 11, a pair of elastically deformable insertion pieces 15 projecting from both sides of the male member main body 11 in parallel with each other, and One guide piece 19 is provided between the insertion pieces 15 so as to project in parallel with them.
The male member main body 11 has, at the center, a string attachment hole 12 into which the end portion 2 of the string-like member is inserted and locked, and a contact portion 14 that contacts both sides of the joint surface 20A of the female member 20 on both sides. Is formed. A connecting bar 13 is provided in the middle of the string mounting hole 12, and the connecting bar 13 divides the string mounting hole 12 into two string mounting holes 12A and 12B so that the length of the string member can be adjusted. Has become.
[0015]
The insertion piece 15 includes a narrow elastic arm portion 15A integrally formed from both sides of the male member main body 11, and a bulging portion 15B bulging at the tip of the elastic arm portion 15A. Outside the bulging portion 15B, an insertion guide surface 16 bulging outward from the distal end toward the base end, an operation portion 17 that gradually curves outward continuously from the insertion guide surface 16, and Locked surfaces 18 that are formed at a substantially right angle or at an acute angle inward from the operation portion 17 are formed in order.
The guide piece 19 is formed so that the thickness is gradually reduced from the male member main body 11 toward the intermediate portion, and then gradually increased from the intermediate portion toward the tip. A rectangular space 19A is formed on the back side of the guide piece 19. This saves material.
[0016]
The female member 20 includes a female member main body 21 as shown in FIGS. 2 and 3.
The female member main body 21 has a string attachment hole 22 into which the end 3 of the string-like member is inserted and locked, and penetrates through the string attachment hole 22 from the joint surface 20A with the male member 10 to form a male member. An insertion hole 23 into which the insertion piece 15 and the guide piece 19 of the member 10 are inserted is formed. The joint surface 20A (joint surface with the male member 10) of the female member 20 is formed in an arc shape in which a central portion is depressed inward.
The inlet side walls of the insertion hole 23 are gradually inclined inward toward the back, and when the insertion piece 15 is inserted, it comes into contact with the insertion guide surface 16 and the insertion piece 15 is moved in the insertion direction. And is formed as a contact portion 24 that is elastically deformed in a direction substantially orthogonal to the contact portion. Openings 25 for exposing the operation portion 17 of the male member 10 to the outer surface are formed on the inner side walls of the insertion hole 23 beyond the contact portion 24.
[0017]
The opening 25 is cut out from the side wall 21A toward the inside of the front and back walls 21B and 21C in the peripheral wall of the female member main body 21 in which the insertion hole 23 is formed. Specifically, it is formed in a concave curved shape from the side wall side opening edge 25A to the inside of the front and back walls 21B, 21C. Of the side wall side opening edges 25A and 25B, the side wall side opening edge 25A near the entrance of the insertion hole 23 engages with the locked surface 18 of the insertion piece 15 to lock the male member 10 to the female member 20. A locking surface 27 is provided, and a protrusion 28 protruding into the side wall side opening is provided on a side wall side opening edge 25B opposite to the entrance side of the insertion hole 23.
[0018]
The protrusion 28 is formed in a curved shape that is continuous from the notch edge 25C of the front and back walls 21B and 21C and is continuous with the side wall 21A. Specifically, it is formed into a curved shape that gradually rises toward the side wall side opening edge 25A from the notch edge 25C of the front and back walls 21B, 21C toward the outside, and then smoothly continues to the side wall 21A. The height of the projection 28 (L1 in FIG. 3), that is, the distance L1 from the deepest position of the notch edge 25C of the front and back walls 21B and 21C to the tip of the projection 28 in the insertion direction of the male member 10 is: The height is set so that a finger pressing the operation unit 17 does not enter a gap between the projection 28 and the insertion guide surface 16 of the insertion piece 15 and the operation unit 17.
In a state where the male member 10 is inserted and locked to the female member 20, the outermost surface of the operation portion 17 is located inside a contour line connecting the side wall 21 </ b> A of the female member main body 21.
[0019]
In such a configuration, in order to lock the male member 10 to the female member 20, the insertion piece 15 of the male member 10 is inserted into the insertion hole 23 of the female member 20. Then, the insertion guide surface 16 formed at the tip of the insertion piece 15 comes into contact with the abutment portion 24 of the female member 20, so that the insertion piece 15 moves in a direction (inward) substantially orthogonal to the insertion direction. It is inserted while being elastically deformed. Eventually, when the locked surface 18 of the insertion piece 15 exceeds the locking surface 27 of the female member 20, the elastically deformed insertion piece 15 elastically returns to its original state. The locking surface 18 is locked to the locking surface 27 of the female member 20. Thereby, the male member 10 can be locked to the female member 20.
[0020]
To remove the male member 10 from the female member 20, the distal end operating portion 17 of the insertion piece 15 protruding from the opening 25 of the female member 20 is pressed inward. Then, since the insertion piece 15 of the male member 10 is elastically deformed inward, that is, the locked surface 18 is separated from the locking surface 27, when the male member 10 is pulled out from the female member 20 in this state, The male member 10 can be removed from the female member 20.
At this time, when the operation section 17 of the male member 10 is pressed inward, the pressing finger hits the projection 28 and does not enter deeply into the opening 25 as shown in FIG. Therefore, since the insertion piece 15 of the male member 10 is not elastically deformed more than necessary, damage and breakage of the insertion piece 15 are small, and durability can be improved.
[0021]
Further, the fact that the pressing finger hits the projection 28 and does not penetrate deeply into the opening 25 does not cause the finger to be caught between the operating portion 17 of the male member 10 and the opening 25 of the female member 20. For example, when the male member 10 is detached from the female member 20 and the force of the finger pressing the operating portion 17 of the insertion piece 15 is momentarily released or reduced, the insertion piece 15 attempts to elastically return to the outside. I do. At this time, even if the insertion piece 15 elastically returns to the outside, the pressing finger does not penetrate deeply into the opening 25 due to the projection 28, so that the operating portion 17 of the male member 10 and the opening 25 There is no danger of pinching a finger between them.
[0022]
According to the present embodiment, the following operation and effect can be expected.
(1) The opening 25 formed in the female member 20 is cut out from the side wall 21A toward the inside of the front and back walls 21B and 21C in the peripheral wall of the female member main body 21 in which the insertion hole 23 is formed, and Since the side wall-side opening edge 25B is provided with the projection 28 projecting into the side wall-side opening, when the operating member 17 of the male member 10 is pressed when the male member 10 is detached from the female member 20, the finger to be pressed becomes a protrusion. 28, it does not penetrate deep into the opening 25, that is, since the insertion piece 15 of the male member 10 is not elastically deformed more than necessary, the damage to the insertion piece 15 is small and the durability is high. Can also be improved.
[0023]
(2) Since the finger to be pressed does not penetrate deep into the opening 25 by the protrusion 28, there is no possibility that the finger is pinched between the operating part 17 of the male member 10 and the opening 25 of the female member 20. That is, when the male member 10 is detached from the female member 20, the force of the finger pressing the operating portion 17 of the insertion piece 15 is momentarily removed or reduced, and the insertion piece 15 elastically returns outward. However, even if the insertion piece 15 elastically returns to the outside, the pressing finger does not penetrate deeply into the opening 25 due to the protrusion 28, so that the operating portion 17 of the male member 10 and the opening There is no danger that a finger will be caught between the finger 25.
[0024]
(3) Since the projection 28 is formed in a curved shape that is continuous from the notched edges 25C of the front and back walls 21B and 21C of the female member main body 21 and is continuous with the side wall 21A, a finger contacts the projection 28. Even if it touches, the finger is not intensively pressed at one place, and since it has a curved surface, it is possible to prevent the protrusion 28 from being damaged.
[0025]
(4) Of the side walls 25A and 25B constituting the opening 25, a locking surface 27 is provided on the side wall opening edge 25A near the entrance of the insertion hole 23, and is opposite to the entrance side of the insertion hole 23. Since the projection 28 is provided on the side wall side opening edge 25B of the side, when the operation part 17 of the male member 10 is pressed by a finger to release the locked state between the male member 10 and the female member 20, Since the belly presses the portion of the operation unit 17 near the locking surface 27, the locked state between the male member 10 and the female member 20 can be released even if the amount of pushing of the finger is small.
[0026]
(5) Since the male member 10 is provided with the pair of insertion pieces 15 having the locked surface 18 and the operation portion 17 on the outside, when the male member 10 is inserted into the female member 20, the pair of insertion pieces 15 Since the formed locked surfaces 18 are locked to the locking surfaces 27 of the female member 20, respectively, the male member 10 can be locked to the female member 20 in a stable state. Also, when removing the male member 10 from the female member 20, the operating members 17 formed outside the pair of insertion pieces 15 may be pressed inward to each other, so that the male member 10 is easily removed from the female member 20. .
[0027]
(6) Since the male member 10 and the female member 20 are each integrally formed of a synthetic resin, they can be mass-produced at low cost.
(7) Since the male member 10 and the female member 20 are provided with the string mounting holes 12 and 22 for inserting and locking the string members, respectively, the string members are inserted and locked in the string mounting holes 12 and 22. By simply doing so, the string-shaped member can be easily connected and fixed to the male member 10 and the female member 20. Therefore, it is excellent in usability.
(8) In the state where the male member 10 is inserted and locked to the female member 20, the outermost surface of the operation portion 17 is located inside the contour connecting the side wall 21 </ b> A of the female member main body 21, that is, Since the operating portion 17 of the male member 10 does not protrude from the outer surface of the female member main body 21, it is possible to prevent a string or a belt from being caught.
[0028]
The present invention is not limited to the buckle having the structure described in the above embodiment, but includes the following modifications.
In the above embodiment, the opening 25 formed in the female member 20 is formed in a concave curved shape from the side wall-side opening edge 25A toward the inside of the front and back walls 21B and 21C, but the shape of the opening 25 is not limited to this. The shape is not limited, and another shape may be used. For example, as shown in FIG. 5, from the side wall side opening edges 25A, 25B to the inside of the front and back walls 21B, 21C, gradually incline linearly and parallel to each other (toward the string attachment hole 22 side of the female member 20). , May be rhombic. In this way, the projections 28 can be simultaneously formed on the side wall side opening edge 25B only by forming the rhombus-shaped opening 25.
[0029]
The height L1 of the protrusion 28 may be such that a finger pressing the operation unit 17 does not enter the gap between the protrusion 28 and the insertion guide surface 16 of the insertion piece 15 and the operation unit 17. However, as shown in FIG. 5, it is desirable to appropriately determine the length L2 between the side walls 25A and 25B of the opening 25 in accordance with the size L2. In other words, the protrusions are set so that the dimension L2 between the side wall side opening edges 25A and 25B is a size corresponding to the size of the finger to be pressed, that is, a size such that the finger hits (straddles) the side wall side opening edges 25A and 25B. It is desirable to determine the height L1 of the portion 28.
[0030]
In the above embodiment, the insertion guide surface 16 is formed at the tip of the insertion piece 15, but the insertion guide surface 16 may not be at the tip of the insertion piece 15 and may be at an intermediate position.
In the above embodiment, the locking surface 27 is formed on the side wall side opening edge 25A of the opening 25. However, the position of the locking surface 27 is not limited to this, and may be provided at a location different from the opening 25. .
[0031]
In the above embodiment, the number of the insertion pieces 15 is two, but may be one, or three or more.
For example, FIG. 6 shows a buckle in which the insertion piece 15 is one. In the case of this example, only one opening 25 formed in the female member 20 is formed on one side. Even with such a configuration, the effects (1), (2), (3), (4), (6), (7), and (8) of the above embodiment can be expected.
[0032]
The buckle according to the above embodiment can be used for any purpose such as bags, but is particularly suitable for use that does not come off under a certain tensile force or more.
In the above embodiment, the male member 10 and the female member 20 are molded (injection molding or injection compression molding) using a synthetic resin. However, the present invention is not limited to this.
[0033]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the damage of an insertion piece is small and a buckle excellent in durability can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a buckle according to the present invention.
FIG. 2 is an exploded perspective view of a male member and a female member in the embodiment.
FIG. 3 is a sectional view showing a locked state between the male member and the female member in the embodiment.
FIG. 4 is a diagram showing a state when the locked state between the male member and the female member is released in the embodiment.
FIG. 5 is a sectional view showing an example in which the shape of the opening is changed in the embodiment.
FIG. 6 is a sectional view showing a modification of the buckle according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Buckle, 2, 3 ... End part, 10 ... Male member, 11 ... Male member main body, 12 ... String attachment hole, 15 ... Insertion piece, 17 ... Operation part, 18 ... Locked surface, 20 ... Female member , 21 ... female member body, 21A ... side wall, 21B, 21C ... front and back wall, 22 ... string attachment hole, 23 ... insertion hole, 25 ... opening, 25A, 25B ... side wall side opening edge, 25C ... front and back wall side cut Chipped edge, 27: locking surface, 28: protrusion.

Claims (6)

A male member 10 and a female member 20 into which the male member 10 is inserted and locked;
The male member 10 includes a male member main body 11, an elastically deformable insertion piece 15 formed on the male member main body 11, a locked surface 18 formed on the insertion piece 15, An operating portion 17 formed on the piece 15 to elastically deform the insertion piece 15;
The female member 20 includes a female member main body 21, an insertion hole 23 formed in the female member main body 21, into which the insertion piece 15 of the male member 10 is inserted, and the insertion piece 23 formed in the insertion hole 23. A locking surface 27 which engages with the locked surface 18 of the plug 15 and locks the male member 10 to the female member 20, and the locked surface 18 of the insertion piece 15 is locked on the locking surface 27. In the buckle 1 having an opening 25 that exposes the operating portion 17 of the male member 10 to the outer surface when
The opening 25 is cut out from the side wall 21A to the inside of the front and back walls 21B and 21C in the peripheral wall of the female member main body 21 in which the insertion hole 23 is formed, and the side wall side opening edge 25B is formed. A buckle provided with a projection 28 protruding into the side wall side opening. A male member 10 and a female member 20 into which the male member 10 is inserted and locked;
The male member 10 includes a male member main body 11, an elastically deformable insertion piece 15 formed on the male member main body 11, a locked surface 18 formed on the insertion piece 15, An operating portion 17 formed on the piece 15 to elastically deform the insertion piece 15;
The female member 20 includes a female member main body 21, an insertion hole 23 formed in the female member main body 21, into which the insertion piece 15 of the male member 10 is inserted, and the insertion piece 23 formed in the insertion hole 23. A locking surface 27 which engages with the locked surface 18 of the plug 15 and locks the male member 10 to the female member 20, and the locked surface 18 of the insertion piece 15 is locked on the locking surface 27. An opening 25 for exposing the operating portion 17 of the male member 10 to the outer surface when
In a state where the male member 10 is locked to the female member 20, the operation portion 17 of the male member 10 exposed from the opening 25 of the female member 20 is pressed to lock the male member 10 and the female member 20. In the buckle 1 that releases the state,
The opening 25 is cut out from the side wall 21A to the inside of the front and back walls 21B and 21C in the peripheral wall of the female member main body 21 in which the insertion hole 23 is formed, and the side wall side opening edge 25B is formed. A projection 28 protruding into the side wall side opening,
The buckle is characterized in that the protruding portion is formed in a curved shape that is continuous from the notch edge 25C of the front and back walls and is continuous with the side wall 21A. The locking surface 27 is provided on the opening edge 25A near the entrance of the insertion hole 23 among the side wall side opening edges 25A and 25B, and the protrusion 28 is provided on the side wall side opening edge 25A and 25B. The buckle according to claim 1, wherein the buckle is provided on an opening edge 25 </ b> B of the insertion hole 23 on a side opposite to an entrance side. The male member 10 includes a pair of insertion pieces 15 protruding in parallel with each other on both sides of the male member main body 11, and the locked surface 18 and the operating portion 17 are provided on both side walls 21 </ b> A of the male member main body 21. Are provided respectively,
4. The buckle according to claim 1, wherein the female member 20 includes the locking surface 27 and the opening 25 on both sides of the insertion hole 23. 5. The buckle according to any one of claims 1 to 4, wherein the male member 10 and the female member 20 are each integrally formed of a synthetic resin. The buckle according to any one of claims 1 to 5, wherein the male member (10) and the female member (20) have string mounting holes (12, 22) for inserting and locking the string-shaped member.

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