TWI543718B - Buckle - Google Patents

Description

buckle

The invention relates to a buckle capable of fastening and uncoupling a male member and a female member.

Conventionally, a buckle composed of a male member and a female member as disclosed in Japanese Patent Laid-Open Publication No. Hei.

According to the male member of the buckle disclosed in Patent Document 1, a pair of buckle arms which are symmetrical to each other and each of which has a locked portion at the front end are extended forward from the base of the member, and the center of each of the buckle arms is always provided. The rod-shaped center guide extends forward from the base.

On the other hand, the female member is provided with a flat cylindrical receiving portion having an insertion opening for one of the male members to be inserted into the buckle arm to accommodate the pair of fastening arms and the center guide rod therein. Moreover, the center of the accommodating portion is provided with a guiding protrusion, which can be inserted into the guiding groove provided on the center guiding rod to guide the central guiding rod to move correctly. Further, the inner side surface of the accommodating portion of the female member is formed with a locking portion engageable with the engaged portion of the male member.

The buckle having the above-described configuration is such that the male member and the female member are opposed to each other, and the male member is inserted into the female member to be coupled to each other and integrated into each other. During the insertion operation, each of the male members of the male member is engaged. The locking portion is not only guided by the guiding groove of the accommodating portion of the female member, but also the central guiding rod of the male member is guided by the guiding piece of the female member to be correctly positioned into the accommodating portion, so that the locking portion of the female member and the yang are The locked portions of the members are engaged with each other.

Patent Document 1: Japanese Patent Laid-Open Publication No. 2007-229307

However, in recent years, for example, even if the user is holding the baggage in one hand In this case, the one-handed buckle that can be connected (kicked) and separated (unbuckled) is strongly demanded by the user. According to the buckle disclosed in Patent Document 1, since the one-hand operation mechanism is not fully considered, the one-hand operation is often limited to a user who is dexterous and careful.

The present invention has been made in view of the above-mentioned facts, and has been completed by painstaking research and development, and its object is to provide a buckle with a one-handed operation mechanism that is reasonably designed and greatly improved in operability.

In order to solve the above problems, the buckle provided by the present invention comprises a male member extending from the base portion with a pair of fastening arms, and a female member having an insertion opening at one end for the insertion of the pair of fastening arms. And the base portion of the male member abuts against the one end portion of the female member when the male member is inserted into the female member, and the male member has the above-mentioned one Each of the side faces of the buckle arm is formed in a curved shape which is outwardly arched (raised) in an intermediate portion extending in the insertion direction of the pair of fastening arms, and when the pair of fastening arms are inserted into the insertion opening, A state in which the pair of buckle arms are temporarily locked to the female member is formed.

In the above buckle, the female member is preferably connected to the front panel, the back panel, and a pair of the two of the four panels of the front panel adjacent to the insertion opening and the two of the four panels of the back panel adjacent to the insertion opening. The insertion side connecting wall is formed by the front panel, the back panel, and the insertion side connecting wall being integrally formed with a lip; and when the pair of latch arms are inserted into the insertion port, the pair is inserted Each of the inner side surfaces of the connecting wall is slidably coupled to the outer side surface of the intermediate portion to form the temporary locking state.

In the above buckle, the male member has a pair of latching arms provided with a locking portion; and the female member has a locking portion capable of locking the latched portion to engage the pair of latching arms, And a guiding portion for guiding the above-mentioned locked portion to the locking portion, and forcing the front ends of the pair of fastening arms to flex and deform during the guiding process to be close to each other, and then separating outwards from each other; Preferably, the guiding portion is configured to continue to advance the pair of latch arms into the insertion slot after forming the temporary latching state At this time, the locked portion can be fastened to the portion where the locking portion is completely engaged.

In the above buckle, the guiding portion is preferably formed during the guiding process, and the front ends of the pair of fastening arms can be forced to approach each other, and the structure in which the insertion side connecting walls press the outer sides of the pair of fastening arms is released.

In the above buckle, the male member preferably has a connecting member for connecting the pair of fastening arms, and can be received in the female member in the connected state of the buckle; In the state, the connecting member is located at a position where the insertion port is closer to the base side.

1‧‧‧ buckle

2‧‧‧positive components

3‧‧‧Female components

21‧‧‧ base

22‧‧‧Bucking arm

22a‧‧‧Bevel

22b‧‧‧ Compliance

22S‧‧‧ buckle arm stop

23‧‧‧The locked part

23B‧‧‧Back convex

23F‧‧‧Front convex

24‧‧‧ buckle arm hole

24a‧‧‧ inner circumference

25‧‧‧Arch bridge (connecting member)

25a‧‧‧ base end

25b‧‧‧Intermediate

26‧‧‧Band Holder

27‧‧‧Based positioning ribs

28‧‧‧ front positioning ribs

3P‧‧‧ insertion port

31‧‧‧ front panel

31d‧‧‧Front side opening edge

31p‧‧‧ front side insert lip

32‧‧‧ Back panel

32d‧‧‧Back side opening edge

32P‧‧‧Side side insertion edge

32S‧‧‧ card edge

36‧‧‧Front side inner guide

36a‧‧‧ front side insertion slot

36S‧‧‧ card slot

37‧‧‧The inner side guide groove

38‧‧‧Baffle

39‧‧‧Band fixing department

A, B‧‧‧ operation hole

C‧‧‧ arc

SH‧‧‧ buckle arm through hole

WD‧‧‧Open side wall

WP‧‧‧ insertion side joint wall

WPa‧‧‧ Guide

The first figure is an embodiment of the buckle of the present invention, and a perspective view of the structure is seen from the front side thereof.

The second figure is a perspective view of the buckle of the same embodiment as shown in the above figure, and its configuration is seen from the back side.

Fig. 3 is a perspective view showing the male member of the same embodiment as viewed from the front side.

Fig. 4 is a perspective view showing the structure of the male member of the same embodiment as viewed from the back side.

Fig. 5 is a perspective view showing the structure of the female member of the same embodiment as viewed from the front side.

Fig. 6 is a perspective view showing the structure of the female member of the same embodiment as viewed from the back side.

Fig. 7 is a plan view showing a state in which the buckle of the same embodiment is in a coupled state, as viewed from the front.

Fig. 8 is a plan view showing the buckle of the same embodiment as viewed from the front side when the pair of buckle arms reach the closest state during the guiding process.

Fig. 9 is a perspective view showing an example of the buckle operation method of the same embodiment.

Fig. 10 is a perspective view showing another example of the buckle operation method of the same embodiment.

An embodiment of the buckle of the present invention will be described below with reference to the drawings. First, the overall structure of the buckle 1 in the connected state will be described with reference to the first and second drawings. The buckle 1 is composed of a male member 2 and a female member 3. The base portion 21 of the male member 2 of the buckle 1 is formed with a pair of flexible buckle arms 22 extending forward from the base portion 21. Further, the female member 3 of the buckle 1 is formed into a flat cylindrical shape, and has a front panel 31 which is unfolded in the flat direction and which is opposed to the first cylinder wall, and a back panel 32 which is a second cylinder wall. One of the cylindrical ends of the female member 3 (the right end of the first and second figures) forms an insertion opening 3P into which the pair of fastening arms 22 are inserted, and the other cylindrical end forms an opening 3D opposite to the insertion opening 3P. Hereinafter, the direction from the insertion port 3P to the opening port 3D is defined as the insertion direction; the direction in which the pair of buckle arms 22 are arranged side by side is defined as the left-right direction; and one of the front panels 31 of the buckle 1 is defined as the front side; the back of the buckle 1 is One of the faces of the panel 32 is defined as a back surface.

As shown in the third and fourth figures, the pair of left and right fastening arms 22 of the male member 2 are formed in a shape of a large head which is enlarged from the base end toward the front end when viewed from above the plane including the pair of fastening arms 22. The right outer side surface of the right side buckle arm 22 and the left outer side surface of the left side buckle arm 22 are formed from above the same plane, and a curved arm card respectively arched to the left and right outer sides is formed at a slightly central portion of the insertion direction. Stop 22S. In other words, the outer side faces of the pair of latch arms 22 form a curved surface, and the male member 2 including the pair of latch arms 22 has a push-out shape in which the front end is slightly pointed (ie, inwardly narrowed). With this configuration, when the male member 2 is inserted into the female member 3 by the pair of fastening arms 22, the side surface 22a of the narrow tip portion can function as a guiding surface of the pair of fastening arms 22, thereby The operability of the male member 2 when inserted into the female member 3 can be improved.

The front end portion of the buckle arm 22 having one of the outer shape is formed with a locked portion 23, and the locked portion 23 is protruded from the front surface of the buckle arm 22 as one of the first engaged portions. The portion 23F and the rear surface of the buckle arm 22 are formed as one of the second engaged convex portions and the rear convex portion 23B. The proximal end portions of the pair of latch arms 22 are respectively formed with a cross-sectional rhombus shape and the snap arm holes 24 extending in the extending direction of the latch arms 22 (ie, the insertion direction) are inserted through the latch arms 22. The male member 2 including the pair of buckle arms 22 is formed in a plan view, and the pair of buckle arms 22 are symmetrical to each other, and the two sides of the front surface are also symmetrical, that is, The configuration of the pair of fastening arms 22 as viewed from the face is exactly the same as the configuration of the pair of fastening arms 22 as viewed from the back. Thus, the relationship of the buckle arm holes 24 is provided on each of the pair of fastening arms 22, so that the strength of the buckle arms 22 can be ensured, and the male member 2 can be prevented from being cracked when formed by, for example, plastic molding. situation.

In addition, the front and rear sides of the proximal end portion of the buckle arm 22 are respectively provided with base positioning ribs 27, and the front and rear ribs 28 are respectively disposed on the front and back sides of the proximal end portion of the buckle arm 22. In the configuration of the positioning ribs 27, 28, when the male member 2 is inserted into the female member 3, the distance between the outer surface of the pair of fastening arms 22 and the inner surface of the female member 3, the positioning rib 27 at the base end and the front end The base portion and the front end portion of the pair of fastening arms 22 are formed to be the shortest. Therefore, in the state in which the female member 3 and the male member 2 are engaged and coupled, the male member 2 can be suppressed from being generated on the female member 3. The position of the buckle 1 in the thickness direction changes (loose).

The pair of fastening arms 22 have compliant faces 22b formed on the inner side faces of the base end sides, and the compliant faces 22b are formed to be received in the female member 3 when the male member 2 is inserted into the female member 3 to be integrated and integrated. In addition, it conforms to the surface of the front side insertion opening 31p and the back side insertion opening edge 32p of the female member 3 which will be described later. When the compliant surface 22b is guided by the front convex portion 23F and the rear convex portion 23B of the pair of fastening arms 22, the pair of fastening arms 22 are bent and deformed to approach each other to the nearest position, and the rim can be inserted into the front side. The 31p and the back side insertion edge 32p are overlapped. In this manner, the male member 2 is surrounded by the front edge of the base portion 21 and the inner side edges of the pair of latch arms 22 to form a space region in which the width in the left-right direction is narrowed from the base portion 21 toward the front end side.

Further, a pair of fastening arms 22 are formed on the opposite inner side faces of the compliant surface 22b to form a flexible band-shaped arch bridge 25 as a connecting member, and the pair of latch arms 22 are connected to each other. The arch bridge piece 25 is provided at a slightly intermediate portion of the pair of fastening arms 22, but at a distance closer to the base end side than the locked portion 23. The end portions 25a of the arch piece 25 are oppositely extended from the respective buckle arms 22. In detail, the end portion 25a of the arch bridge piece 25 connected to each of the buckle arms 22 is formed in a state in which the buckle arm 22 is not subjected to an external force (i.e., as shown in the third and fourth figures). The base end of the arm 22 is centered by the tangential direction of the arc C drawn by the connecting portion of the buckle arm 22 and the arch bridge 25; and the intermediate portion 25b of the arch bridge 25 is located at the center of the pair of the latch arms 22 toward the base 21 Bowed Bend the shape of the bulging. Therefore, when the pair of latch arms 22 are subjected to a force that forces the spacing of the pair of latch arms 22 to expand, the connection between the latch arms 22 and the arch bridge 25 is less likely to cause shear stress, so that the pair of latch arms 22 The mechanical strength and thus the mechanical strength of the male member 2 can be improved. Moreover, the curved intermediate portion 25b is also formed when the male member 2 and the female member 3 are integrally formed in a snap-fit manner, and the peak can be accommodated in the female member 3 so as not to obstruct the shape of the hand. Therefore, the male member 2 is configured to facilitate the formation of the above-mentioned space region. As the operation hole A of the holding hole. The operation hole A is viewed from above the plane containing the pair of buckle arms 22, and has a size for the finger to be inserted. Thus, if the male member 2 is formed, the user can insert the finger into the operation hole A and press the finger against the compliance surface. 22b and the arch bridge 25 force the male member 2 to move toward the front end of the buckle arm 22, that is, the insertion direction; conversely, if the base portion 21 is pressed with a finger, the male member 2 can be moved in the reverse direction of the insertion direction. Further, one end of the base portion 21 where the buckle arm 22 is not provided is provided with a belt fixing portion 26 for adjusting the length of the belt connected by the buckle 1 and fixing it.

As shown in the fifth and sixth figures, the front panel 31 of the female member 3 is formed in an X shape which is surrounded by four outer peripheral edges which are curved from the outer side to the inner side. The back panel 32 of the female member 3 is also formed in an X shape which is formed by four outer peripheral edges which are curved from the outer side to the inner side. The four sides of the front panel 31 constituting the female member 3 and the four sides of the back panel 32 are the front panel 31 by one of the insertion insertion ports 3P and the opening side connecting wall WP. The back panels 32 are connected to each other in one body. Further, the inner side surfaces of the pair of insertion side connecting walls WP form the guide surface WPa, and can be fitted to the outer surfaces of the base ends of the pair of fastening arms 22 in a coupled state in which the female member 3 and the male member 2 are engaged with each other. Further, the one end of the insertion direction of the female member 3 is formed with a rectangular insertion port 3P which is formed in a direction parallel to the insertion direction. The insertion opening 3P is formed by the front panel 31, the back panel 32 and the insertion side connecting wall WP. The opening formed by the frame. The other end of the insertion direction of the female member 3 is formed as an open port 3D which is formed by a frame side of the front panel 31, the back panel 32, and the open side connecting wall WD as viewed in a direction parallel to the insertion direction.

The opening edge of the insertion opening 3P of the female member 3 includes a front side insertion opening edge 31p formed on the front panel 31 at the insertion opening 3P end to form an arcuate curved portion, and an arc formed on the rear surface plate 32 at the insertion opening 3P end. Back side insertion opening of the curved portion Edge 32p.

The front side insertion opening edge 31p and the back side insertion opening edge 32p are respectively formed in an arcuate curved shape which is extended toward the opening 3D, that is, in the insertion direction, and is formed by the outer surface of the front panel 31 and the outer surface of the back panel 32. The upper and lower opposing planes are mutually overlapping. Further, from the same plane, the front panel 31 and the back panel 32 have a shape in which the front side insertion opening 31p and the back panel 32 are fitted to the pair of latch arms 22 and are accommodated.

In a state in which the female member 3 and the male member 2 are engaged and coupled to each other, the insertion opening 3P is formed to face and face symmetry with the plane including the pair of fastening arms 22, and the female member 3 and the male member 2 are coupled to each other. In the state of the outer surface of the positive facing panel 31, the front panel 31 is formed such that the pair of fastening arms 22 do not expose the outer edge of the insertion opening 3P formed by the front panel 31. In the same connection state, the front panel 31 is formed such that the pair of fastening arms 22 do not expose the outer edge of the insertion opening 3P formed by the back panel 32, as viewed from the plane facing the outer surface of the back panel 32.

(Refer to the first figure and the second figure)

According to the above configuration, in the state in which the female member 3 and the male member 2 are engaged and coupled, the entire buckle can improve the overall aesthetic appearance of the male member 2 and the female member 3. Further, the insertion opening 3P configured as described above is symmetrical with respect to the front end portion of the pair of fastening arms 22 by the insertion opening 3P of the female member 3, so that when the male member 2 is inserted into the female member 3, the pair of fastening arms 22 can be provided. It is easy to insert into the insertion port 3P.

On the other hand, the opening edge of the open port 3D of the female member 3 includes a front side opening edge 31d which is formed on the front panel 31 at the opening 3D end and which is recessed, and is formed on the back panel 32 at the open port 3D end. The back side opening edge 32d is recessed. In a state in which the male member 2 and the female member 3 are engaged and coupled to each other, the opening 3D is formed to be asymmetric with respect to a plane including the pair of fastening arms 22.

Specifically, the front side opening edge 31d is formed in a curved shape that is recessed toward the insertion port 3P side. Moreover, the entire outer shape of the front panel 31 is formed in a plane opposite to the outer surface of the front panel 31, and the front side insertion opening 31p and the front side opening edge 31d are just shaped to fit the pair of fastening arms 22 and are received. The shape is from the outer surface of the back panel 32 in a state in which the female member 3 is engaged with the male member 2 In the plan view, the pair of fastening arms 22 do not expose the shape of the outer edge of the opening 3D formed by the back panel 32 (see the first drawing and the second drawing). According to this configuration, in the state in which the female member 3 and the male member 2 are engaged and coupled, the entire buckle can improve the overall aesthetic appearance of the male member 2 and the female member 3.

The back side opening edge 32d also has a curved shape which is recessed toward the insertion opening 3P side like the front side opening edge 31d, and the back side opening edge 32d further has a locking edge 32S which is further recessed toward the insertion opening 3P side. . The locking edge 32S is viewed from a plane opposite to the outer surface of the back panel 32, has a bottom edge extending laterally to the left and right of the insertion opening 3P, and a side edge extending from the left and right ends of the bottom edge toward the insertion direction Composition. In a state in which the male member 2 and the female member 3 are engaged and coupled, the pair of fastening arms 22 are exposed from the edge of the opening 3D constituted by the back panel 32, as viewed from a plane opposite to the outer surface of the back panel 32. It is equivalent to the formation of the locking edge 32S.

Further, the back panel 32 is formed such that when the male member 2 and the female member 3 are engaged and coupled, the bottom edge and the side edge of the locking edge 32S can be locked to the pair of back convex portions 23B, and The shape in which the back surface convex portion 23B is exposed from the locking edge 32S (see the first drawing and the second drawing), therefore, the back surface of the pair of fastening arms 22 is provided in a state in which the male member 2 and the female member 3 are fastened and coupled to each other. The convex portion 23B is engaged with the bottom edge and the side edge of the locking edge 32S, and prevents the rear convex portion 23B from moving toward the insertion port 3P side. According to this configuration, since one of the open ports 3D functions as a locking portion for the back surface convex portion 23B, it is not necessary to separately form such a locking portion, so that the structure of the female member 3 is made simpler.

Further, the thickness of the back surface plate 32 at the locking edge 32S is thicker than that of the back surface convex portion 23B, and the back surface convex portion 23B is locked in the locked state of the locking edge 32S. That is, it does not protrude from the surface of the back panel 32. Therefore, the engagement state of the back surface convex portion 23B formed on the back surface of the pair of fastening arms 22 and the locking edge 32S formed by the back surface panel 32 is less likely to be interfered by the outside. As a result, it is possible to prevent the snap-fit connection of the male member 2 and the female member 3 from being tripped for unintended reasons.

The inner surface of the front panel 31 is formed with a front side inner guide groove 36 which is deep in the insertion direction as shown in the sixth drawing. The front side inner guide groove 36 constituting the guide portion has a groove width which is inserted from the front insertion opening edge 31p toward the opening opening 3D at a predetermined ratio. The groove 36a and the locking groove 36S which is extended from the end of the front side inner guide groove 36a toward the opening 3D side. The side wall of the groove constituting the locking groove 36S is formed so as to be vertically overlapped with the locking edge 32S from a plane opposite to the outer surface of the back plate 32, and when the male member 2 is inserted into the female member 3 to be engaged and engaged. The front convex portion 23F of the pair of fastening arms 22 is guided inwardly by the groove side wall of the front side inner guide groove 36a to the locking groove 36S, and when the male member 2 and the female member 3 are engaged and engaged, the pair of buckles The arm 22 is expanded by the elastic restoring force, and the front convex portion 23F is locked to the side wall of the groove of the locking groove 36S, so that the front convex portion 23F can be prevented from coming off and moved toward the insertion port 3P end.

Further, as shown in FIG. 5, the inner surface of the back panel 32 is formed with a back side inner guide groove 37 extending in the insertion direction. The inner side guide groove 37 constituting the guide portion is formed in a shape in which the groove width is gradually narrowed from the rear side insertion opening edge 32p to the locking edge 32S. The side wall of the groove constituting the rear side inner guide groove 37 is formed to be vertically overlapped with the front side inner guide groove 36a from a plane opposite to the outer surface of the back surface plate 32, and the male member 2 is inserted into the female member 3 for buckle. When the connection is made, the back surface convex portion 23B of the pair of fastening arms 22 is guided inwardly by the groove side wall of the back side inner guide groove 37 to the locking edge 32S. In other words, the front end portions of the pair of buckle arms 22 are forced to face each other in the process of being guided by the guide grooves 36, 37 as the male members 2 are inserted into the female member 3, and the convex portions 23F, 23B are guided by the guide grooves 36, 37. When the front convex portion 23F enters the locking groove 36S and the rear convex portion 23B enters the locking edge 32S, the locking projection 32S and the locking edge 32S are respectively locked by being elastically opened to each other.

In addition to the above-described insertion opening 3P and opening 3D, the female member 3 is formed with a pair of fastening arm insertion holes SH in a direction perpendicular to the insertion direction. One of the opening portions is formed in the direction of the direction parallel to the right and left direction, and is formed in a rectangular opening shape surrounded by the front panel 31, the back panel 32, the insertion side connecting wall WP, and the open side connecting wall WD. And the opening edges of the pair of buckle arm through holes SH are formed to correspond to the inner circumferential surface 24a of the buckle arm holes 24 of the pair of fastening arms 22. The pair of buckle arm through holes SH are formed in a state in which the female member 3 is engaged with the male member 2, and the buckle arm holes 24 of the pair of buckle arms 22 are exposed on the outer side of the female member 3, and the pair of buckle arm through holes SH The shape of the opening is plugged by the buckle arm 22, respectively. The shape of the inner circumferential surface 24a constituting the buckle arm hole 24 is the shape of the opening corresponding to the buckle arm through hole SH (see the first figure and The second figure) allows the female member 2 and the male member 3 of the buckle 1 to be functionally integrated, and also prevents foreign matter from intruding into the inside of the female member 3 from the pair of buckle arm through holes SH. Moreover, the opening edge of the buckle arm through hole SH is formed to be sufficient to force the pair of fastening arms 22 to be relatively close to each other such that the locking relationship between the surface convex portion 23F and the locking groove 36S and the relationship between the back surface convex portion 23B and the locking edge 32S are both released. The shape and the depth, that is, when the snap-fit connection of the male member 2 and the female member 3 is to be released, the outer side of the buckle arm 22 exposing the buckle arm through-hole SH is pressed inwardly by the hand to make the pair of buckle arms When the 22 faces are close to each other, the male member 2 can be retracted in the opposite direction of the insertion direction to release the snap-fit relationship.

Further, the inside of the female member 3 is located at the center in the left-right direction of the front side inner guide groove 36, and is formed with a partition plate 38 extending in the insertion direction, and is connected to the center in the left-right direction of the back side guide groove 37. The partition plate 36 serves to reinforce the front panel 31 and the back panel 32 of the female member 3 from being deformed by the external force surface. The end of the female member 3 in the insertion direction is provided with a belt fixing portion 39 for fixing one end of the flat belt to be connected by the buckle 1. In order to make the buckle 1 as lightweight as possible, the bottom surface of the belt fixing portion 39 is provided with a plurality of bottoms. hole. The inner edge of the belt fixing portion 39 and the front side opening edge 31d which is curved and concave from the insertion opening 3P are formed in the same shape as the operation hole A in the state in which the buckle 1 is engaged, and the insertion direction and the operation Hole A is opposite to operation hole B. Since the operation hole B which is symmetrical with the operation hole A is provided, the aesthetics and the operability of the functional integral feeling when the male member 2 and the female member 3 are engaged with each other can be improved.

As shown in the seventh figure, when one of the male members 2 is inserted into the insertion opening 3P in the insertion direction, the inclined surface 22a of the outer side of the buckle arm 22 is first brought into contact with the guiding surface WPa of the female member 3 and guided forward. Then, the front end of the pair of buckle arms 22 can enter the inside of the female member 3; then, the pair of front convex portions 23F provided on the front surface of the buckle arm 22 are guided to the locking groove 36S along the front side insertion groove 36a, and One of the back surface of the buckle arm 22 and the back surface convex portion 23B are guided to the open port 3D along the back side inner guide groove 37.

At this time, the buckle arm locking portions 22S of the respective outer side faces of the pair of latch arms 22 are formed in a shape that bulges toward the left and right sides, and the guide faces WPa of the pair of insertion side connecting walls WP are formed with a pair of buckles. The shape of the outer side of the base end of the arm 22 is matched, Therefore, when the pair of fastening arms 22 are inserted into the female member 3, the outer side surfaces of the pair of fastening arms 22 are forcibly guided by the guiding surface WPa, and the relative facing surface faces the amount of the self-guide surface WPa. Then, when the buckle arm locking portion 22S enters the position of the guide surface WPa, the pair of buckle arms 22 are forced to flex inwardly, and when the buckle arm locking portion 22S passes the guide surface WPa, the guide surface WPa is forced to buckle. The pressure of the arm locking portion 22S is released, and thereafter, the inward deflection of the pair of latch arms 22 is guided to follow the front side insertion groove 36a and the back side inner guide groove 37. Here, since the groove widths of the front side insertion groove 36a and the back side inner guide groove 37 are gradually narrowed from the insertion opening 3P toward the opening 3D at a predetermined ratio, when the pair of fastening arms 22 continue to penetrate into the inside, The front side insertion groove 36a and the back side inner guide groove 37 are forcibly guided, and the pair of fastening arms 22 are bent in the center in the left-right direction, that is, inwardly at a predetermined ratio, and enter the inner depth of the female member 3. . With this configuration, when the buckle arm locking portion 22S passes through the guide surface WPa, the force applied to the buckle arm 22 is gradually increased, and the buckle can be engaged by the engagement of the buckle arm locking portion 22S and the guide surface WPa. The arm 22 is temporarily fixed to the female member 3.

When the pair of fastening arms 22 continue to be inserted into the female member 3, the front convex portion 23F reaches the locking groove 36S, and the rear convex portion 23B reaches the opening 3D. At this time, the locking groove 36S is inserted into the groove on the front side. The terminal of 36a is expanded, and the locking edge 32S is extended at the end of the inner side guide groove 37. Originally, one of the inwardly deflecting arms 22 is in the shape of the locking groove 36S due to its elastic restoring force. The shape of the locking edge 32S is outwardly opened, so that the front convex portion 23F is engaged with the side wall of the groove of the locking groove 36S, and the front convex portion 23F is blocked and is difficult to retreat toward the insertion port 3P side; The portion 23B is engaged with the bottom edge of the locking edge 32S, and the back surface convex portion 23B is blocked and is difficult to retreat toward the insertion opening 3P side. Thus, the male member 2 and the female member 3 are engaged with each other to complete the connection.

In a state in which the male member 2 and the female member 3 are coupled to each other, the compliant surface 22b of the inner side of the buckle arm 22 and the arch bridge 25 are housed in the female member 3, and only one of the operation holes A of the male member 2 is provided. Parts are covered by the front panel 31 and the back panel 32 of the female member 3. However, in the present embodiment, the front side insertion opening edge 31p and the back surface insertion opening edge 32p are formed in an arc shape which is curved and recessed toward the opening 3D side, and the arch bridge piece 25 is formed at the top end of the intermediate portion 25b thereof. The convex portion 23F is caught in the locking groove 35S And the rear convex portion 23B is engaged with the locking edge 32S and does not enter the height of the female member 3. Therefore, although the operation hole A is partially covered by the front panel 31 and the back panel 32, the pair of buckle arms are retained from the facing side. The plane of 22 is the size of the opening for the degree of finger insertion. The operation hole A having the above-described configuration keeps the size of the finger insertion operation from the time when the male member 2 is inserted into the female member 3 to be engaged with each other, and the male member 2 can be pushed into the female position by the finger inserted into the operation hole A. Inside the member 3.

Further, as shown in FIG. 8, just before the front panel 31 and the back panel 32 reach the locking groove 36S and the opening 3D, respectively, the pair of latch arms 22 are in the closest state. In the present embodiment, at this time, the compliant surface 22b of the pair of latch arms 22 overlaps the front side insertion edge 31p and the rear insertion edge 32p as viewed from a plane opposite to the plane including the pair of button arms 22. And the pair of buckle arms 22 also enter a state of being relatively close together, in other words, the lateral width between the compliant faces 22b is in a narrowest state, in which case, if the compliant face 22b is still outside the female member 3 At this time, the finger inserted into the operation hole A is pressed by the compliant surface 22b. However, according to the configuration of the buckle 1, since the two compliant faces 22b are immersed in the inside of the female member 3 when the relative width is relatively close, that is, they are not exposed, the fingers inserted into the operation hole A are not pressed by the compliant surface 22b. After that. When the male member 2 is pressed into the female member 3 by the compliant surface 22b, the male member 2 can be smoothly advanced to the position where the front convex portion 23F and the rear convex portion 23B are respectively engaged with the locking groove 36S and the locking edge 32S. As a result, the male member 2 can be press-fitted into the female member 3 by the pressing of the compliant surface 22b but without the finger being pressed by the compliant surface 22b.

(Method of operation)

Hereinafter, please refer to the ninth and tenth drawings for explaining the operation method of the buckle 1 of the present invention: a perspective view showing an example of a buckle operation method according to the ninth and tenth drawings, in more detail, the ninth The figure shows a perspective view of an intermediate process in which the operation hole B of the female member 3 is not used to press the male member 2 into the female member 3 so as to be engaged with each other, and the tenth diagram shows the operation hole B using the female member 3 to press the male member 2 A three-dimensional schematic view of an intermediate process of pressing the female member 3 to engage each other.

First, the operation method of not pressing the operation hole B of the female member 3 to press the male member 2 into the female member 3 will be described in detail with reference to the ninth embodiment.

As shown in the ninth figure, when the operation method is started, the index finger should be inserted into the operation hole A of the male member 2 to hold the male member 2. At this time, the finger pad of the index finger should be inserted into the operation hole A facing the arch bridge piece 25. Then, the male member 2 is held by the index finger so that one of the male members 2 is aligned with the insertion arm 3P of the female member 3, and the middle finger and the female finger are used to clamp the peripheral portion of the strap fixing portion 39 of the female member 3. Then, the male member 2 is pressed into the insertion opening 3P of the female member 3 by the finger portion of the index finger against the intermediate portion 25b of the arch bridge piece 25 and the inner side surface of each of the buckle arms 22, and then the male member is continued. 2, when the female member 3 is pressed into the female member 3, the convex portions 23F, 23B of the male member 2 are guided into the guide grooves 36, 37 of the female member 3, and finally, the front convex portion 23F is engaged with the locking groove 36S. The back surface convex portion 23B is engaged with the locking edge 32S, and the male member 2 and the female member 3 are connected to each other.

Next, the operation method of pressing the operation hole B of the female member 3 to press the male member 2 into the female member 3 will be described in detail with reference to the tenth embodiment.

As shown in the tenth figure, at the beginning of this operation method, the index finger is first inserted into the operation hole A of the male member 2 to hold the male member 2. At this time, the finger pad of the index finger should be inserted into the operation hole A facing the arch bridge piece 25. Then, after the male member 2 is held by the index finger, one of the male members 2 is aligned with the insertion port 3P of the female member 3, and in this state, the thumb is inserted into the female member 3 with the finger pad facing the opening 3D. The operation hole B is operated to hold the female member 3; then, the male member 2 is pressed into the female member 3 by the middle portion 25b of the arch bridge 25 and the compliant surface 22b of the inner side of each of the buckle arms 22 by the index finger. In the mouth 3P, when the male member 2 is continuously pressed into the female member 3, the convex portions 23F, 23B of the male member 2 are guided into the guide grooves 36, 37 of the female member 3, and finally, the front convex portion The portion 23F is engaged with the locking groove 36S, and the back surface convex portion 23B is engaged with the locking edge 32S, and the male member 2 and the female member 3 are connected to each other. Thus, the operation of the operation hole B of the female member 3 can also connect the male member 2 to the female member 3. Therefore, the degree of freedom of the operation method can be increased, and as a result, the operability of the buckle can be further improved.

The above operation method is completed by one-hand operation, and the intermediate portion 25b of the arch bridge 25 is designed to be in the front locking groove 36S, and the apex of the back locking edge 32S is just immersed in the female member 3, therefore, the pressure is Arch bridge piece 25 to operate male member 2 When the convex fingers 23F and 23B complete the locking action, the index finger contacts the front side insertion opening edge 31p and the back side insertion opening edge 32p, so that the user (operator) can sense the male member 2 by tactile sensation. The female member 3 has completed the snap-fit connection.

Next, the operation method when the male member 2 and the female member 3 are disengaged is explained. When the male member 2 and the female member 3 are to be unwound, first, the forefinger and the thumb of the thumb are used to expose the buckle arm through hole SH of the female member 3. After the outer side faces of the respective buckle arms 2 are clamped from both sides, the respective buckle arms 22 are pressed inwardly to separate the convex portions 23F and 23B from the original engagement position, and the respective buckle arms 22 are kept in the insertion direction while maintaining the pressed state. Push in the opposite direction. By this action, the pair of latch arms 22 tend to expand outward in a direction away from each other due to the elastic force, and since the front convex portion 23F has been pressed against the insertion groove 36a and the rear convex portion 23B of the front side guide groove 36, When the side wall of the groove of the guide groove 37 is pressed, the state in which the front convex portion 23F and the locking groove 36S are engaged and the state in which the rear surface convex portion 23B and the locking edge 32S are engaged can be released. At this time, there is a tendency that the outward elastic expansion tendency of the buckle arm 22 is such that the groove width is gradually narrowed from the insertion port 3P to the opening port 3D by the guide grooves 36, 37, so that the pair of buckle arms 22 are subjected to the elastic force. The reaction force, that is, the opposite direction of the insertion direction from the side wall of the groove of each of the guide grooves 36, 37, and the guiding action of the guide grooves 36, 37, causes the male member 2 to move in the opposite direction of the insertion direction, the male member 2遂It can be detached from the female member 3, so that the operability at the time of unbuckling can be improved.

When the fastening state is released, the index finger is inserted into the operation hole A of the male member 2. At this time, the index finger nail should face the arch bridge piece 25, and then the index finger pad is pressed against the base portion 21 of the male member 2 in the opposite direction of the insertion direction. When the toggle arm 22 of the male member 2 is disengaged, the snap member 22 of the male member 2 can be disengaged from the insertion opening 3D of the female member 3, and the snap-fit of the male member 2 and the female member 3 is completely disengaged, and the operation ends.

Here, the outer shape of the male member 2 formed by the outer side faces of the pair of fastening arms 22 is formed into a slightly pointed shape, and the inclined surface 22a constituting the tip end portion is formed to be more oblique than the outer side facing the insertion direction. Therefore, the force acting on the inclined surface 22a is effectively converted into the force in the insertion direction. Therefore, the outer side of the buckle arm 22 is bent by the index finger and the thumb so as to insert the male member 2 in the opposite direction of the insertion direction. The force necessary for the introduction can be reduced, and as a result, the operability of the male member 2 and the female member 3 can be improved.

As described in detail above, according to the buckle of the embodiment, the following effects can be obtained:

(1) The male member 2 has a space defined by the front edge of the base portion 21 and the opening of the inner side edge of the pair of buckle arms 22 toward the front end side of the buckle arm 22, and the space area is defined by the arch bridge 25 When the male member 2 is engaged with the female member 3, the positive member 2 is partially covered by the front panel 31 and the back panel 32, but the composition is inserted. The front side insertion opening edge 31p and the back side insertion opening edge 32p of the opening edge of the opening 3P are formed to be expanded and arched toward the opening 3D end so as to accommodate the size of the finger foot insertion, and the user can insert the finger into the operation hole A. On the other hand, the snap connection and the disengagement of the male member 2 and the female member 3 are handled by one hand, so that the operability of the buckle can be improved.

(2) When the compliant surface 22b of the pair of latch arms 22 and the arch bridge piece 25 are engaged with the stopper groove 36S and the back surface convex portion 23B are engaged with the locking edge 32S, they may be incorporated into the female member 3. According to this configuration, when the male member 2 is inserted and the convex portions 23F and 23B reach the engagement position, the finger inserted into the operation hole A of the male member 2 comes into contact with the front side insertion opening edge 31p and the back side insertion opening edge 32p. The user can sense the tactile connection of the male member 2 and the female member 3 by the touch.

(3) The compliant surface 22b of the pair of buckle arms 22 is formed during the guiding process of the buckle arm 22 by the guide grooves 36, 37. When the pair of buckle arms 22 are brought close to each other, the front edge 31p and the back side can be inserted with the front side. The side insertion edge 32p overlaps. When the width of the compliant surface 22b formed in the opposite direction is the narrowest, the compliant surface 22b does not protrude outside the female member 3, so that the finger inserted into the operation hole A can be prevented from being pressed by the second compliant surface 22b. At the same time, the male member 2 can also be pressed into the female member 3 by the compliant surface 22b to surely perform the fastening operation.

(4) The female member 3 is formed with an operation hole B surrounded by the belt fixing portion 39 and the front side opening edge 31d which is bent and recessed toward the insertion opening 3P, and the operation hole B is viewed from the plane facing the surface plate 31, Symmetrical to the operating hole A of the buckle 1 in the connected state Relative shape. According to this configuration, the aesthetic appearance by the functional integration of the male member 2 and the female member 3 can be increased.

(5) Further, the operation hole B is like the operation hole A, and is formed to be able to accommodate the insertion of the finger. Therefore, the male member 2 and the female member 3 can be engaged and connected by the operation hole B of the female member 3, so that Increasing the degree of freedom of operation when the male member 2 and the female member 3 are snap-fitted together can further improve the operability of the buckle 1.

(6) An arch bridge piece 25 as a connecting member is provided between the pair of buckle arms 22, and has a higher strength of the buckle arm 22 than a member not provided with the arch bridge piece 25, and further The mechanical strength of the male member 2 is enhanced.

(7) The arch bridge piece 25 has an intermediate portion 25b that is bent and bulged toward the base portion 21, and the intermediate portion 25b is formed such that the front surface convex portion 23F can be engaged with the stopper groove 36S and the rear surface convex portion 23B is engaged with the locking edge 32S. At the same time, the apex thereof can be incorporated into the shape of the female member 3, that is, before the convex portions 23F, 23B reach the locking position, one portion of the arch bridge 25 is still at the outer position of the insertion opening 3P, and therefore, the operation hole is utilized. When the male member 2 is pressed into the female member 3, the male member 2 can be surely pressed into a position where the respective convex portions 23F and 23B are surely locked.

(8) The outer side surfaces of the pair of buckle arms 22 are formed such that the front end portion is curved inwardly and inwardly so that the male member 2 formed by the outer side surface is formed into a tip shape, and is configured by the inclined surface 22a having the tip end portion. The force necessary for pushing the male member 2 in the reverse direction of the insertion direction can be reduced, so that the operability of the buckle can be improved.

Furthermore, the above embodiment may be implemented in the following aspects:

‧ In the above embodiment, although the arch bridge piece 25 is provided as a connecting member to connect the pair of buckle arms 22, the arch bridge piece 25 may not be provided. In this case, the pair of buckle arms 22 should have sufficient flexibility and at the same time It is necessary to have sufficient mechanical strength against external forces.

In the above embodiment, the intermediate portion 25b of the arch bridge 25 is formed so that the apex can be incorporated into the female member 3 when the front convex portion 23F is engaged with the stopper groove 36S and the rear convex portion 23B is engaged with the locking edge 32S. The shape is changed, and the design is such that when the convex portions 23F and 23B are in the engaged state, the apex of the intermediate portion 25b is exposed to the outside of the insertion opening 3P. According to this configuration, the effects as in the above (1) to (5) can still be obtained.

In addition, the arch bridge piece 25 is formed to be bent toward the opening 3P side, and the apex of the intermediate portion 25b may be configured to be in the female member 3 before the convex portions 23F and 23B enter the engagement position. In this case, for example, the compliant surface 22b of the pair of latch arms 22 can be formed to be overlapped with the respective insertion edges 31p and 32p when the buckle 1 is engaged, and the same is true when the male member 2 and the female member 3 are fastened to each other. The male member 2 can be inserted into the position where the convex portions 23F and 23B reach the locking position, and at the same time, the user can perceive the feeling when the fastening connection is completed. In such a configuration, the partition plate 38 provided in the female member 3 should be considered not to interfere with the advance and retreat of the arch bridge piece 25.

In the above embodiment, the female member 3 is provided with an operation hole B into which the finger can be inserted. The operation member B of the female member 3 is not used to connect the male member 2 and the female member 3, as explained in the operation method of the above embodiment. Therefore, the operation hole B of the female member 3 may not be provided, and the effect as described above (1) to (3) can still be obtained. Moreover, the degree of freedom in designing the female member 3 can also be improved.

In the above embodiment, the compliant faces 22b of the pair of latch arms 22 are formed to overlap the front side insertion edge 31p and the back side insertion edge 32p when the buckle arms 22 reach the closest position to each other during the guiding process. shape. If the design is changed so that the pair of buckle arms are closest to each other during the guiding process, and the compliant surface 22b has been immersed (received) in the female member 3, the effects of (1) to (3) can also be obtained.

‧ Further, not limited to the above configuration, if the compliant surface 22b of the pair of latch arms 22 is formed when the pair of latch arms 22 are closest to each other, they may be exposed to the outside of the female member 3, and when configured, the same can be obtained ( 1) ~ (2) effect.

‧ One of the above embodiments has the inner side surface of the buckle arm 22 facing each other from the plane facing the plane containing the pair of buckle arms 22, and can be inserted into the front side of the female member 3 in the coupled state. The rim 31p and the compliant surface 22b of the back side insertion opening edge 32p, which can be seen from the seventh figure, form a slope which is inclined in the insertion direction of the male member 2. However, the compliant surface 22b is not limited to such a configuration, and it is not necessary to form a parallel surface to the insertion direction, for example, to form a surface perpendicular to the insertion direction. According to this configuration, the effect as in the above (1) can still be obtained.

One of the above embodiments forms a mutual direction on the outer side of the buckle arm 22 For the deflection, the male member 2 formed on the outer side surface is tapered at the tip end. If the design is changed so that the outer side faces of the pair of fastening arms 22 are formed, for example, without being bent, but the tip end is tapered in a straight line, the effects of the above (1) to (7) can be obtained.

In the above embodiment, the front end of the pair of latch arms 22 is provided with a front convex portion 23F and a rear convex portion 23B as locking portions, and a locking groove for locking the front convex portion 23F is provided inside the female member 3, respectively. The locking edge 32S of the 36S and the locking back surface convex portion 23B is used as a locked portion, and is engaged with each other to complete the fastening connection of the buckle. However, the present invention is not limited to this configuration. When the locked portion is relocated to the outer side surface of the pair of buckle arms 22, a locking portion is provided inside the buckle arm through hole SH to lock the locked portion. The buckle connection can also be used. With this configuration, the front panel 31 and the back panel 32 of the female member 3 can have the same shape. Therefore, when the male member 2 and the female member 3 are engaged and engaged, the functions of the male member 2 and the female member 3 can be improved. The aesthetic sense of the sense of sexuality.

In the above-described embodiment, the buckle 1 is configured such that the female member 3 and the male member 2 are formed by the front side insertion edge 31p and the front edge of the base portion 21 when the snap member is coupled. However, the operation hole A formed when the female member 3 and the male member 2 are engaged and engaged by the front side insertion edge 31p and the front edge of the base portion 21 may be added to the front side of the base member 21, and a pair of buckle arms may be added. The base end side edges of the inner side of 22 are enclosed. In other words, it is possible to provide a buckle in which the female member 3 and the male member 2 have been engaged and engaged when the base end portions of the pair of fastening arms 22 are to be housed in the female member 3.

1‧‧‧ buckle

2‧‧‧positive components

3‧‧‧Female components

21‧‧‧ base

22‧‧‧Bucking arm

22a‧‧‧Bevel

22b‧‧‧ Compliance

22S‧‧‧ buckle arm stop

23F‧‧‧Front convex

24‧‧‧ buckled hole

24a‧‧‧ inner circumference

25‧‧‧Arch piece

25b‧‧‧Intermediate

26‧‧‧Band Holder

27‧‧‧Based positioning ribs

28‧‧‧ front positioning ribs

3D‧‧‧Open mouth

3P‧‧‧ insertion port

31‧‧‧ front panel

31p‧‧‧ front side insert lip

31d‧‧‧Front side opening edge

32‧‧‧ Back panel

36a‧‧‧ front side insertion slot

36S‧‧‧ card slot

38‧‧‧Baffle

39‧‧‧Band fixing department

A, B‧‧‧ operation hole

WD‧‧‧Open side wall

WP‧‧‧ insertion side joint wall

WPa‧‧‧ Guide

Claims (4)

The buckle is composed of a male member extending from the base with a pair of fastening arms, and a female member having an insertion opening at one end for inserting the pair of fastening arms; the female member is composed of a front panel, a back panel and a pair of insertion side connecting walls that connect the two of the four sides of the front panel adjacent to the insertion opening and the two of the four backs of the back panel that are adjacent to the insertion opening; and the male member is inserted into the male member The base member of the male member abuts against the one end portion of the female member when the female member is coupled to each other; wherein the male member has a side surface formed by the pair of latch arms The intermediate portion extending in the insertion direction of the pair of fastening arms has a curved shape that is outwardly arched (bumped), and when the pair of fastening arms are inserted into the insertion opening, until the intermediate portion passes through the insertion edge The outer side surface of the pair of fastening arms is pressed by the inner side surface of the insertion side connecting wall of the insertion opening edge portion before the insertion side connecting wall inner side surface of the portion The pair of latch arms are close to each other, whereby a state in which the male member is temporarily locked to the female member is formed before reaching the connected state, and when an external force is applied to the pair of latch arms, the intermediate portion is configured to pass The insertion action after the insertion side edge portion of the insertion side connecting wall inner side surface is such that the inner side surface of the insertion side connecting wall of the insertion opening edge portion is weakened by the inner side surface, and the transmission is increased as described above. The external force of the pair of buckle arms is such that the intermediate portion is temporarily locked by the inner side surface of the insertion side connecting wall. The buckle according to claim 1, wherein the male member has a pair of buckle arms provided with a locking portion; the female member has a locking portion to lock the pair a locking portion of the buckle arm, and a guiding portion for guiding the locking portion to the locking portion, and forcing the front ends of the pair of buckle arms to flex and deform in the guiding process, and then collapsing outwards Guide portion; In the guiding process, when the pair of fastening arms are in the closest state, the inner side surface may be completely accommodated in the female member; and the guiding portion is disposed after the temporary locking state is formed, and the continuation is continued. When the pair of latch arms advance into the insertion port, the locked portion can be fastened to the portion where the locking portion is completely engaged. The buckle according to claim 2, wherein the guiding portion is formed during the guiding process, and the front ends of the pair of fastening arms can be forced to approach each other, and the insertion side connecting wall is released from the pair of fastening arms The structure of the compression on the outside. The buckle according to any one of the preceding claims, wherein the male member has a connecting member for connecting the pair of latching arms, and in the connected state of the buckle And being receivable in the female member; and in the temporary fastening state, the connecting member is located at a position where the insertion port is closer to the base portion side.