JPH11235208A - Buckle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buckle with an automatic lock mechanism, which is constituted of two pieces, enables re-locking and is extremely thin with a simple structure. SOLUTION: A male member 10 is provided with a pair of connecting arms 13 having flexible shaft parts 14, engagement bodies 16, engagement parts 17 and abutting parts 20, a pair of lock arms 22 having the flexible shaft parts 24, lock pieces 25, lock releasing buttons 27, lock end parts 23 and lock step parts 28 and base parts 11. Then, a female member 30 is constituted of a cylindrical part 33 provided with an inserting port 34 having a slope part 55, a pair of window-shaped opening parts 40 having engagement receiving parts 41 and an opening part 53 having a lock releasing button lock part 54, a pair of repulsive parts 50 having holding parts 51 and the base part 31. Then, the male member 10 is inserted to the female member 30 and, only by this, automatic locking is attained simultaneously with connection. When the lock releasing buttons 27 are depressed, locking is easily released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin buckle with a lock, and more particularly, to a belt or the like provided with a lock device that has a small number of parts and is thin, but is hard to be unlocked and easy to relock. The present invention relates to a buckle used for connection of the buckle.

[0002]

2. Description of the Related Art Conventionally, in a buckle for connecting a belt, when a male member and a female member are in a connected state, a locking mechanism for locking the connected state is prevented in order to prevent the buckle from being separated by an unexpected external force being applied. A buckle has been proposed.

As an example of such a buckle, Japanese Utility Model Laid-Open No.
And JP-A-4-221502. In these buckles, the male member includes a pair of flexible arms having an engagement claw, and the female member includes a tubular portion having an engagement portion that can be engaged with the engagement claw. Is provided with a lock mechanism for locking the connection between the male member and the female member.

This lock mechanism has a lock member having a pair of leg pieces capable of preventing the pair of flexible arms from being bent inward during connection, and the pair of leg pieces are provided inside the flexible arm. The flexible arm is slidable between a lock position for preventing bending of the flexible arm and an unlocking position for enabling bending of the flexible arm inward. Then, the lock member is manually operated to the lock position to lock the connection state between the male member and the female member, and the lock member is manually operated to the unlock position to perform the separation operation of the male member. I was

On the other hand, for example, Japanese Utility Model 5-2
There is an automatic locking buckle that automatically locks the connection state at the same time as the connection between the male member and the female member as proposed in JP-A-0992.

This buckle is composed of a male member 60 and a female member 65 as shown in FIG. The male member 60 has a through hole 62 that opens in a plate-shaped insertion portion 61 perpendicular to the insertion axis X, and a block 63 that is movable in the insertion axis X direction is provided in the through hole 62. . Female member 65
Is an elastically deformable hook 66 having a claw 67 at its tip.
And flexible pieces 68, 68 which restrict the insertion amount of the insertion portion 61 of the male member 60 and which are bent further in the insertion direction and resilient when inserted deeper.

According to this buckle, when connecting the male member 60 and the female member 65, the distal end 61a of the insertion portion 61 of the male member 60 comes into contact with the claw 67 of the female member 65, and the hook 66
While elastically deforming outward. At this time, when the distal end portion 61a passes through the pawl 67, the pawl 67
Is pushed in the anti-insertion direction, and the claws 67 enter the through holes 62. Then, the distal end portion 61a and the claw 67 are engaged with each other, so that the male member 60 and the female member 65 are connected to each other.

In order to separate the connected male member 60 and female member 65, the male member 60 is inserted deeper into the female member 65. Due to this deep insertion, the flexible pieces 68, 68 are pushed by the distal end portion 61a of the insertion portion 61 to bend and generate an elastic force in the anti-insertion direction. Also, as the insertion portion 61 enters, the block 63 enters below the claw 67, and the block 63
Due to the resilience of the rubber member 6, it is held between the female members 65.

When the male member 60 is pulled out in the opposite direction,
The block 63 is inserted into the through-hole 62 while being
Relative to the tip 61a. By further withdrawal, the pawl 67 moves from above the block 63 to above the distal end portion 61a, and the insertion portion 61 is withdrawn and separated from the female member 65.

However, such a conventional buckle requires a lock member different from the male member and the female member, or a separate component such as a block in order to form the lock mechanism. Therefore, the number of parts constituting the buckle becomes at least three or more, and the material cost increases, and there is a problem that the assembling work is required. In addition, there is a problem that the cost of the mold for forming the component parts increases and the product price becomes high.

Furthermore, in the former two buckles, the connecting operation is complicated, and sometimes the lock may be forgotten. Further, in the latter buckle, if the male member is excessively inserted into the female member with a strong force, there is a problem that the block immediately enters the lower portion of the claw 67 and becomes separable, and the buckle is separated without being connected. . Further, when the separation is forgotten during the separation operation, there is a problem that the connection and the lock cannot be performed unless the separation is completed and then reinserted.

In order to solve the above problem, the present inventor has disclosed in Japanese Patent Application No. 9-16237 a special lock mechanism part which is unnecessary and can be constituted by two points, so that the production cost can be reduced and the connection and connection can be reduced. A buckle with an automatic lock mechanism that can be automatically locked at the same time and that can be re-locked even once unlocked has been proposed.

The structure comprises a connectable male member 70 and a female member 90. The male member 70 includes a pair of flexible arms 73 having an engaging body 74, an engaging claw 77 and a lock portion 80, and a locking member. An elastic projection 8 having a lock piece 85 and an engagement step 88 that can be opposed to the end 83 and the lock section 80.
7 and a lock arm 82 in which the lock piece 85 can take a lock position and an unlock position.

The female member 90 has a cylindrical shape having a pair of windows 100 through which the engaging members 74 of the inserted pair of flexible arms 73 can be exposed, and a pair of engaging portions 101 that can engage with the engaging claws 77. Part 93, a flexible part 110 having a locking part 111 engageable with the locking end 83 and capable of holding the inserted lock arm 82 at the lock position or the unlock position, and a flexible part 110 of the inserted lock arm 82. An engagement opening 114 where the elastic projection 87 is exposed and can be engaged with the engagement step 88, and a push-up projection formed on the inner surface of the tubular portion 93 and capable of holding the lock piece 85 and the lock 80 in a non-relative state. A buckle characterized by comprising a ridge (115).

[0015]

However, in the invention having the above structure, as shown in FIG. 31, a lock piece 85 and a lock portion 80 formed on the inner surface of the cylindrical portion 93 are held in a non-relative state. The push-up ridge 115 is provided as an indispensable constituent element, and the female member 90 is provided with a concave portion 113 around an engagement opening for pressing an elastic protrusion for unlocking in accordance with the push-up ridge 115. Has a problem that a predetermined thickness is required for these parts, which hinders the thickness of the buckle from being smaller than the predetermined thickness.

Further, there is a problem that a mechanism for maintaining the locked state is complicated and the structure cannot be simplified.

The present invention solves the above-mentioned problems, and does not require a separate locking mechanism component, and can be configured at two points.
The buckle has an automatic lock mechanism that can be automatically locked at the same time as the connection and can be re-locked once the lock is released. It is an object of the present invention to provide a buckle that can be used extremely widely because it can be made extremely thin to about 1/2, and the structure can be simplified, so that production cost can be further reduced.

[0018]

In order to achieve this object, a buckle according to claim 1 is an interconnectable buckle comprising a male member and a female member, wherein the female member is provided with an engaging member. The male member includes a pair of flexible connecting arms disposed on the same plane, and the male member is inserted into the female member near the distal ends of the pair of connecting arms. An engagement portion engageable with the engagement receiving portion is provided, and the pair of connection arms are elastically deformed in a direction of approaching each other by being inserted into the cylindrical portion, so that the engagement is performed. The mating portion and the engaging portion are engaged with each other, and the pair of connecting arms are formed so as to be elastically deformed in a direction of approaching each other so that the engagement can be released, and the male member is connected to the pair of connecting arms. The pair of connecting arms are disposed between the arms. A lock arm having flexibility provided with a lock release button arranged at a predetermined distance from the surface, a lock piece is provided near the tip of the lock arm, and the lock arm is provided with the pair of lock arms. Disengaging the connection by elastically deforming the connecting arms in the direction of approaching each other is prevented by bringing the lock pieces into contact with each other, and the lock arm is moved from the locked position where the buckle cannot be disconnected. To a lock release position, which is a position at which the base of the buckle is bent so that the connection arm and the lock piece do not come into contact with each other to enable the buckle to be disconnected.
The lock piece is formed so as to be movable, and the male member is inserted into the cylindrical portion of the female portion, so that the lock release button of the lock arm contacts one surface of the inner wall of the cylindrical portion, and The pair of connecting arms are pressed against the other surface of the cylindrical portion facing the other, and the lock arm is elastically deformed, whereby the lock piece is moved to the release position, and the engaging portion is When engaged with the engagement receiving portion, the lock arm enters the opening provided in the tubular portion so that the lock release button of the lock arm opens outward, and the inner wall of the female portion is provided. And the lock piece is moved to the lock position by the elastic force of the lock arm itself.

In the buckle according to this configuration, the male member and the female member are only used to insert the male member into the female member, and the connection is performed with one touch without any operation and the lock is automatically performed. State. To release the connection, just press the lock release button to release the lock.

Further, the mechanism is simple, there is no waste, and the thickness of the buckle is extremely thin.

In the buckle according to the second aspect, in addition to the configuration of the buckle according to the first aspect, the tip of the male member is connected to the inner bottom of the tubular portion of the female member when the male member is connected to the female member. A resilient portion is provided, which is capable of contacting and biasing the male member in a direction opposite to the insertion direction.

In the buckle according to this configuration, since the male member can be urged by the resilient portion in the discharging direction opposite to the inserting direction at the time of connection, there is no play during connection.

In the buckle according to the third aspect, the buckle according to the first aspect is provided.
Or, in addition to the configuration of the buckle according to claim 2, a lock end for locking the lock piece at the lock position is provided at a tip of the lock arm, and the engaging portion is provided at the elastic portion. A holding portion engageable with a toe portion is provided, and the holding portion can hold the locking end at the lock position by an elastic force of the resilient portion during connection, and the engaging portion is When engaged with the engagement receiving portion, the lock release button of the lock arm enters an opening provided in the cylindrical portion that is open to the outside, and the lock release button from the inner wall of the female portion extends from the inner wall. When the pressing is released, the lock piece is moved to the lock position by the elastic force of the lock arm itself, the locking end is held by the holding portion to hold the lock position, and the lock of the lock arm is locked. By pressing the release button, Engagement with the locking position of the serial holding portion, characterized in that the possible release.

In the buckle according to this structure, the locked state can be reliably maintained by locking the locking end portion with the holding portion of the resilient portion in the state automatically locked by the structure of claim 1. You can do it.

Further, even with this structure, the number of parts is
There is no increase from two points.

Further, while maintaining the locked state, it is possible to release the lock very quickly and easily only by pressing the lock release button.

In the buckle according to the fourth aspect, the buckle according to the second aspect is provided.
Or, in the buckle according to claim 3, when the engagement portion is engaged with the engagement receiving portion, the lock release button of the lock arm enters the opening that opens outward. The locking portion is released from the inner wall of the female portion, the lock piece is moved to the lock position by the elastic force of the lock arm itself, and the locking step portion provided at the end of the lock release button insertion opening side. Is held in a locked position by engaging with a lock release button locking portion provided on the periphery of the opening on the insertion port side, and the lock is released by pressing the lock release button of the lock arm. The engagement between the stop portion and the lock release button locking portion at the locked position can be released.

In the buckle according to this configuration, similarly to the buckle according to the third aspect, the locked state is automatically maintained only by inserting the male member into the female member. Nor use.

In addition, since the holding portion according to the third aspect can be provided at the same time, the locked state can be maintained more reliably and the locked state is not accidentally released.

Further, not only can the locked state be reliably maintained, but the locked state can be released with a single touch by simply pressing the lock release button. This can be released by simply pressing the lock release button even if the holding portion described in claim 3 is provided.

In the buckle according to the fifth aspect, the buckle according to the second aspect is provided.
In addition to the configuration of the buckle according to any one of claims 4 to 6, an angle formed between the lock release button engaging portion of the female member and the outer surface of the cylindrical portion is formed at an acute angle, and the engagement of the male member is formed. The angle between the stop portion and the outer surface of the lock release button is an acute angle corresponding to the angle between the lock release button engagement portion of the female member and the outer surface of the tubular portion, and By the member being urged by the resilient portion,
The locking step portion and the lock release button locking portion face each other and are locked to hold the locked position.

In the buckle according to this configuration, the opening and the locking step are engaged by utilizing the urging force of the resilient piece, and the lock is maintained with a simple structure.

In the buckle according to the sixth aspect, the buckle according to the third aspect is provided.
In addition to the configuration of the buckle according to any one of claims 5 to 5, the resilient portion is a surface orthogonal to the insertion axis direction of the cylindrical portion, and each of both ends in the longitudinal direction of the cylindrical portion as a base, A pair of elastic members extending inward in a cantilever manner, wherein the holding portion is formed in a groove shape extending substantially in parallel with a longitudinal direction of the resilient portion. It is characterized by.

In the buckle according to this configuration, since the elasticity of the material of the buckle itself is used, the urging force can be applied to the male member without requiring a metal spring or the like for separately generating an urging force.

In the buckle according to the seventh aspect, the buckle according to the third aspect is provided.
In addition to the configuration of the buckle according to any one of Claims 5 to 5, the resilient portion is a surface orthogonal to the insertion axis direction of the cylindrical portion, and the respective side walls are formed in the longitudinal direction of the cylindrical portion. It is stretched in a belt shape so as to be connected, and the holding portion is formed in a groove shape extending substantially parallel to the longitudinal direction of the resilient portion.

In the buckle according to this configuration, since the elasticity of the material of the buckle itself is used, a biasing force can be applied to the male member without requiring a metal spring or the like for separately generating a biasing force. Instead, the strength can be significantly increased by connecting.

In the buckle according to the eighth aspect, the buckle according to the first aspect is provided.
In addition to the configuration of the buckle according to any one of claims 7 to 7, the locking end is provided on the resilient portion at the rear end of the lock release button of the lock arm or on the lock arm side of the cylindrical portion rear wall. It is characterized in that a spacer consisting of a projection is provided so as to abut.

With the buckle according to this configuration, it is possible to prevent an accident in which the locking end is inadvertently inserted near the resilient portion.

In the buckle according to the ninth aspect, the buckle according to the first aspect is provided.
In addition to the configuration of the buckle according to any one of claims 8 to 8, the lock arm is inclined toward the engagement opening from the insertion axis direction, and the lock release button has a flat inner wall formed flat. The locking step is slid and urged by the elastic force of the lock arm so as to enter the engagement opening.

In the buckle according to this configuration, the inner wall of the tubular portion can be made flat, so that the thickness of the buckle can be made extremely thin and the structure can be made very simple. Further, on the other hand, the lock release button of the lock arm can be reliably inserted into the opening.

In the buckle according to the tenth aspect, in addition to the configuration of the buckle according to any one of the first to ninth aspects, a part of the periphery of the insertion opening of the female member can be inserted into the lock arm. The opening is expanded by making the cylindrical portion thinner so as to facilitate the opening.

In the buckle according to this configuration, when inserting the male member into the female member, the lock release button that is not on the same plane as the connecting arm can be easily inserted into the cylinder.

In the buckle according to the eleventh aspect, in addition to the configuration of the buckle according to any of the second to tenth aspects, the lock release button is pressed from the lock position to the lock release position. When the unlocking button is pressed by the resilient portion and moved to the insertion port side, the male member is moved in the direction opposite to the insertion direction so that the unlocking button cannot return to the opening. It is characterized by being formed to be movable.

In the buckle according to this configuration, once the lock is released, the lock can be held at the unlocked position, and even if the lock is released, if the connected state is not released, the buckle can be grasped again to easily lock again.

[0045]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 19 show an embodiment of the present invention. This buckle comprises a male member 10 and a female member 30 as shown in FIG. ,
It has a pair of connecting arms 13 having an engaging body 16, an engaging portion 17, and a contact portion 20, a flexible shaft portion 24, a lock piece 25, a lock release button 27, a locking end portion 23, and a locking step portion 28. A pair of lock arms 22 and a base 1 supporting them
And the female member 30 is provided with an insertion port 3 having a slope portion 55.
4, a pair of window-shaped openings 40 having an engagement receiving portion 41, a cylindrical portion 33 having an opening 53 having a lock release button locking portion 54, and a pair of resilient portions 50 having a holding portion 51; ,
And a base 31.

In this description, the near side in FIG. 1 is referred to as the front side, and the other side in FIG. 1 is referred to as the back side. FIG.
As shown in FIG. 5, the insertion direction of the male member 10 is X, and the flexible direction of the connecting arms 13, 13 perpendicular to the insertion direction is Y. Then, as shown in FIG. 2, the flexible direction of the lock arm 22 orthogonal to the X direction and the Y direction is defined as the Z direction.

The material of the buckle of the present embodiment is a nylon resin. As the material, other than nylon resin, various materials can be used according to the application, but a high-strength synthetic resin material having a material itself having spring elasticity, for example, a so-called engineering plastic such as polycarbonate and polyacetal is preferable. . The buckle according to the present embodiment can be implemented not only with resin but also with metal material or the like. Further, the present invention can be implemented even when a plurality of materials are combined.

As shown in FIG. 1, the male members 10 are symmetrically formed on both sides of the base 11 having the belt mounting portion 12 on the same plane which is substantially parallel to each other and extends in the direction of the insertion axis X so as to face each other. A pair of connecting arms 13, 13 and a lock arm 22 extending in the insertion axis X direction from the center of the base 11 between the connecting arms 13, 13.

Each of the connecting arms 13, 13 has an engaging body 16 projecting outward at the tip end thereof and having an inwardly tapered slope toward the outside. A step-shaped engaging portion 17 is formed at the end of the flexible shaft portion 14. Further, a contact portion 20 is provided inside the distal end portion of the engagement body 16.
Is provided.

In the present embodiment, the contact portion 20 is provided as shown in FIG.
As shown in FIGS. 2 and 4, the engagement body 16 is provided so as to extend from the distal end and protrude inward, and has a substantially V-shaped cross section tapered inward. At the tip of the engagement body 16, the outer surface of the contact portion 20 is formed in a curved shape that is continuous with the outer surface of the engagement body 16. The connecting arm 13 is connected to the cylindrical portion 33 at the time of connection.
By the side wall 35, when being separated, it is pinched by a finger and elastically deformed by the pressing of the engaging body 16 in the Y direction, and is bent inward along the Y axis in FIG.
It is formed so as to be elastically restored to the original shape shown in FIGS.

The lock arm 22 has, at its tip, a locking end 23 projecting in the X direction, which is the direction of the insertion axis, and a wing-like projection orthogonal to the insertion axis X in the side direction. It has lock pieces 25, 25 opposed to the contact portions 20, 20 at predetermined intervals, respectively, and a lock release button 27 provided on a predetermined side (lower side in FIG. 2).
The flexible shaft portion 24 is elastically deformable in a direction substantially perpendicular to the elastic deformation direction of the connecting arms 13 (the direction of arrow Z in FIG. 2).
Are formed.

Further, a slope is formed so as to continue from the rear side of the lock release button 27 to the locking end 23, so that the locking end 23 is formed so as to protrude to the most distal end of the male member.

The lock release button 27 is connected to one surface of the flexible shaft portion 24 of the lock arm 22 and the lock pieces 25 and 2.
5, the engaging step 28 is provided with a pressing surface of the lock release button 27 on a surface facing the base 11 opposite to the insertion direction of the lock release button 27. And an acute angle of about 45 °.

The female member 30 has a belt connecting portion 32 on one side of the base portion 31 and a cylindrical portion 33 having an insertion port 34 on the other end, and is provided on the base portion 31 side of the cylindrical portion 33. Is provided with resilient portions 50, 50 which are symmetrically flexible like double doors,
An engagement opening 54 is formed in the front wall 36 of the cylindrical portion 33, and a slope 55 is formed inside the rear wall 37.

The cylindrical portion 33 has side walls 35, 35 whose inner surfaces face each other with an inclined surface diverging toward the insertion opening 34.
The front wall 36 and the rear wall 37 which face each other substantially in front and rear are formed in a flat rectangular tube shape.

As shown in FIG.
The window-like openings 40, 40 penetrating in the Y-axis direction are provided to face each other, and the window-like openings 4 of the side walls 35, 35 are provided.
The edge closer to 0,40 is the engaging portion 1 of the male member 10 to be inserted.
Engaging portions 41, 41 engageable with 7, 17 are formed. Note that the window-like openings 40, 40 are partially
6, a recess is formed in the rear wall 37 side.

In the present embodiment, the resilient parts 50, 50
As shown in FIGS. 6 and 7, cantilevers extend from both sides of the base 31 in the Y direction of FIG. 1 in a cantilever shape and face each other. Each free end has a belt as shown in FIG. A holding portion 51 that extends substantially parallel to the extension direction of the connecting portion 32, is formed in a groove shape as shown in FIG. 6, and is engageable with the locking end portion 23 of the lock arm 22 is provided. And the spring unit 50
Is formed so as to be elastically deformable in the insertion axis X direction.

The opening 53 is formed near the base 31 of the rear wall 37 so as to open in a U-shape with the base 31 open.

The slope portion 55 is provided inside the periphery of the insertion opening 34 of the cylindrical portion 33 on the side of the front wall 36, and is formed so that a part of the front wall 36 is tapered toward the insertion opening 34. The insertion opening 34 is formed so as to enlarge the insertion opening 34, and has a shape that does not hinder the insertion of the lock release button 27 when the male member 10 is inserted into the tubular portion 33. The slope portion 55 is formed by cutting the front wall 36 into a rectangular shape as viewed from the front as shown in FIG. 11 and a triangular shape as viewed from the side as shown in FIG.

Next, the operation of the buckle configured as described above will be described.

First, the connection between the male member 10 and the female member 30 will be described. When the male member 10 and the female member 30 are separated, the connecting arms 13 and 13 and the lock arm 2
2. The resilient pieces 50, 50 are in the normal positions shown in FIGS. 1 to 7, respectively, as described in the configuration of the present embodiment.

As shown in FIGS. 8 and 9, FIGS. 17A and 17B, and FIGS. 18A and 18B, the connecting arms 13 and 13 and the lock arm 22 of the male member 10 are connected to the female member. 30 and is inserted into the cylindrical portion 33 in the direction of the insertion axis X.

In the following, the parts which act simultaneously symmetrically to the left and right will be described on only one side, and the description on the other side will be omitted.

When the connecting arm 13 and the lock arm 22 are inserted through the insertion opening 34,
Of the lock arm 22 abuts on the inclined surface 55. In this case, X
When entering along the direction, depending on the thickness of the buckle,
After the lock arm 22 has entered, the back side of the connecting arm 13 may be hooked on the rear end of the insertion slot 34. In this case, the male member 10 and the female member 30 are slightly recessed on the rear side. If it is inserted while being bent, it can be inserted without being caught. The elasticity of the lock arm 22 can be increased if the same material is used as the distance between the pressing surface of the lock release button 27 and the plane including the connecting arms 13 and 13 increases. 33 makes insertion difficult. Therefore, in the present embodiment, the slope portion 55 is provided only on the front wall 36 side, but the slope portion 56 may be provided on the rear wall 37 side as shown in FIG. If the inclined portion 57 is provided and the inclined portion 57 is provided, it becomes easier to insert the male member 10 into the female member 30, so that a thinner buckle can be obtained.

If the central axis of the male member 10 is inserted obliquely with respect to the central axis of the female member during this insertion, the outer surface from the engaging body 16 to the engaging portion 17 (outside of the contact portion 20). The inclination of the male member 10 is corrected as it is inserted together with the converging slope of the male member 10 (including the side surface) and the flared slope of the side walls 35, 35, so that the male member 10 enters the proper insertion posture.

As shown in FIGS. 10, 17 (C) and 18 (C), as the insertion of the male member 10 proceeds, the inner surfaces of the side walls 35, 35 gradually move the engaging bodies 16, 16 of the connecting arms 13, 13. To inward to elastically deform the connecting arms 13, 13, and between the connecting arms 13, 13, that is, the contact portions 20, 20.
The distance approaches. Further, the lock release button 27 of the lock arm 22 slides on the slope portion 55, and due to the slope of the slope portion 55, the lock arm 22 is gradually elastically deformed in the arrow z direction, and the lock piece 25 approaches the front wall 36 side. And
11 and 17 due to the bending of the connecting arm 13 in the direction of the arrow Y and the bending of the lock arm 22 in the direction of the arrow z.
(D), the lock portion 20 and the lock piece 2 as shown in FIG.
5 overlaps with each other so that the insertion of the male member 10 proceeds.

12 to 16, FIGS. 17 (E) to (I), FIG.
As shown in (E) to (I), as the insertion proceeds, the locking end 23 first reaches the resilient portion 50 and presses it (FIG. 19).
(E)).

Next, the engaging portion 17 reaches the engaging receiving portion 41, the engaging body 16 enters the window-like opening 40, and the connecting arms 13, 13 are moved by their own resilient force as indicated by arrows in FIG. It opens vigorously outward in the direction, and the engaging bodies 16
Are exposed to the outside at the window-like openings 40, 40 (FIGS. 12, 17 (E), 19 (E)) and enter a connected state. Therefore, it is recognized that the connection is completed without visual confirmation. At this stage, the engaging portions 17, 1 of the engaging bodies 16, 16 are provided.
There is a gap between 7 and the engagement receiving portions 41, 41, which have not yet been completely locked.

Further, the insertion of the male member 10 proceeds, and in the next stage, the locking step 28 reaches the opening 53, the lock arm 22 is released from the pressing force by the front wall 36, and (Figs. 13-14, 17 (F)-)
(G), FIGS. 19 (F) to (G)). The lock release button 27 is exposed through the opening 53.

In the next step, the locking end 23 is moved to the deepest part of the resilient part 50 so as to slide on the grooved slope of the holding part 51 of the resilient part 50 and is fixed (FIG. 19G). ).

In the next stage, the male member 10 is pushed back in the direction opposite to the insertion direction by the resiliency of the resilient portion 50, and the engaging step 28 is brought into contact with the lock release button locking portion 54. It is touched and faced and locked. Also, window-shaped openings 40, 4
0 and the engagement portions 17, 17 of the connecting arms 13, 13 are closely engaged with each other, and can withstand a large load.
The lock state is established at the lock position (corresponding to FIG. 4) opposite to 0, and the connection between the male member 10 and the female member 30 is completed. At this time, the free ends of the resilient portions 50, 50 connect the locking end 23 of the lock arm 22 to the holding portions 51, 50.
With the holding of the locking arm 51, the locking position is stably held (FIG. 19).
(I)).

That is, by a series of these operations, the male member 10 and the female member 30 are automatically brought into the connection locked state at the same time as the connection with one touch.

In this state, the male member 10 is connected to the female member 3
When the engaging body 16 is pressed inward in order to separate from the zero, the connecting arm 13 bends inward, and accordingly, the contact portion 20 moves inward, and the inner end of the contact portion 20 is locked. It contacts the outer end of the piece 25. This allows the connecting arm 1
3 is prevented from being bent inward, and the engaging portion 17 and the engaging portion 41 are prevented.
Is in a state where it cannot be released from the engaged state. Accordingly, the engagement release is prevented, and the connection between the male member 10 and the female member 30 is locked.

The male member 10 and the female member 30 are engaged with the engaging portion 17 and the engaging portion 41 and the engaging step 28 and the engaging opening 54 at a total of three places. Engage the two members 1
High tensile strength is maintained between 0 and 30. The engaging step 28 at the distal end of the lock arm 22 and the lock release button engaging portion 54 are engaged on the insertion axis X-ray, so that a twisting motion is generated between the male member 10 and the female member 30. Even if an external force acts, the connected state can be stably maintained.

In order to separate the male member 10 and the female member 30 from the connected state, first, press the lock release button 27 of the male member 10 exposed at the engagement opening 54 of the female member 30 inward (arrow). (Z direction) (FIG. 17 (F), FIG. 19).
(F)). As a result, the locking step portion 28 presses the lock release button locking portion 54 in the Z direction, so that the locking step portion 23, that is, the entire male member 10 moves in the insertion direction X along the slope of the lock release button locking portion 54. And move toward the back of Z.
Therefore, the lock arm 22 elastically deforms and bends, and the locking end portion 23 presses the slope of the holding portion 51 in the Z direction, so that the elastic portion 50 is further elastically deformed in the insertion direction and slides in the rear direction. , The lock arm 22 includes an engagement step 28.
Is disengaged from the lock release button locking portion 54 to release the engagement between them, and the male member 10 then substantially reverses the moving direction, and the elastic force of the elastic portion 50 in the direction opposite to the insertion direction X. Pushed back by. Therefore, even if the locking step 28 attempts to move in the X front direction by the elastic force of the lock arm 22, the locking release button 27 is pushed back to a position where it does not already engage with the lock release button locking part 54, It is no longer possible to enter the opening 53. If the lock arm 22 is in this state, the lock piece 25 approaches the front wall 36 side, and is in the unlocked position in a non-relative state with the contact portion 20.

In this state, the male member I0 and the female member 3
0 indicates that the engagement portion 17 and the engagement portion 41 are still in a connected state, and if the separation is forgotten during the separation operation, the male member 10 is moved into the female member 30 in this state. Perform push-in operation. By the pushing operation, the male member 10 slightly moves in the insertion axis X direction, and the locking end 23 of the lock arm 22 is
The spring 50 is pressed in that direction. Due to this pressing, the resilient portion 50 is elastically deformed, whereby the engagement between the locking end 23 and the locking portion 51 is released, and the lock arm 22 elastically returns to the front along the Z axis. At this time, the lock arm 2
2 returns to the lock position with a click sound,
The holding portion 51 of 0 resiliently presses the locking end portion 23 in the locked state, and returns to the connection locked state shown in FIGS. 16, 17 (I) and 19 (I) in which the holding end portion 23 is held. That is, it can be easily re-locked by grasping and returning.

In order to release the connection, when the locks 22 are further pressed from the unlocked state in a state where the lock arms 22 are in the unlocked position in a direction to approach each other, the connection arms 13, 13 are pressed. Is bent inward, and the contact portions 20, 20 move inward. At this time, the contact portions 20, 20 are in a non-relative state to the lock pieces 25, 25, and the contact portions 2
0, 20 and the lock pieces 25, 25 overlap each other so that the engagement portions 17, 17 and the engagement receiving portions 41, 4 are finally reached.
1 is released (FIGS. 11 and 17 (F)).

The elastic return force of the resilient portion 50, the tapered slope of the outer surface of the engaging body 16 and the elastic return force of the flexible arm 13, the inclined surface of the inner surface of the side wall 35, and the elastic return force of the lock arm 22. The male member 10 is urged in the withdrawal direction to be separated from the female member 30 by cooperating with the gradually increasing gradient of the projecting height of the slope portion 55 and the like. During this separation, the position of the lock piece 25 in the direction of the arrow Z is controlled by the inclined surface 55, the lock arm 22 and the flexible arm 13 elastically return to the original shape, and the elastic portion 50 also elastically returns to the original shape.

When the back wall 37 of the female member 30 is mounted so as to be positioned on the body side of the wearer at the time of using the buckle, the elastic projection 27 for unlocking operation is unexpectedly moved by the wearer's motion or the like. An external force is prevented from being applied, and the connection lock state between the male member 10 and the female member 30 is stably held.
Also, an unlock button 2 serving as an operation button for unlocking
Since 7 is located on the back wall 37 of the buckle, the locked state of the connection cannot be seen from the outside, which is advantageous for crime prevention.

Further, when separating the buckle,
It can be easily separated by using only three fingers of one hand. That is, the lock release button 27 can be pressed with the index finger, and at the same time, the connection arms 13 and 13 can be pressed with the thumb and middle finger, and the buckle can be quickly unlocked and separated with one hand. .

Although the present invention has been described based on one embodiment, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made without departing from the gist of the present invention. Can be easily inferred.

For example, as shown in FIG. 20, the locking portion 17 and the locking receiving portion 41 for connection are formed such that the engaging receiving portion 41 has a pair of window-shaped openings 40 formed in the female member 30. , Female member 3
And a flexible pressing arm 45 extending substantially parallel to the insertion axis direction X of the male member 10 from the insertion port 34 side outside the cylindrical portion 33 and covering the window-shaped opening 40. A pressing portion 46 is provided at the distal end of the pressing arm 45 so as to protrude so as to be able to enter the window-shaped opening 40, and the pressing portion 46 is a locking projection elastically locked to the periphery of the window-shaped opening 40. 48, and the engaging portion 17 is provided with the window-shaped opening 4
The hook portion is a hook-shaped portion that can be locked to zero, and the pressing portion 47 presses the engaging portion 17 when the pressing arm 45 is pressed so that the connection is released. It is preferred.

Further, as shown in FIG.
A pair of window-shaped openings 40 pierced in the female member 30,
The female member 30 is connected substantially parallel to the insertion axis direction X of the male member 10 so as to connect the insertion port 34 outside the cylindrical portion 33 of the female member 30 to the female base portion 31 and covers the window-shaped opening 40. A flexible pressing band 47 formed as described above, the pressing band 46 includes a pressing portion 46 protrudingly provided so as to be able to enter the window-like opening 40, and an engagement disposed at the distal end of the connecting arm 13. The portion 17 has a hook shape that can be locked in the window-shaped opening portion 40 and the pressing band 4
The pressing portion 46 may press the engaging portion 17 to release the connection by pressing the 7.

In this embodiment, the lock arm 22 is inclined by about 2 ° to the front side with respect to the insertion axis of the male member, but these angles are determined by the cylindrical portion 33 and the lock release button 2.
7, the lock arm 22 may be parallel to the direction of the insertion axis X. In short, the lock arm 22 and the connecting arms 13, 13 may be used.
Can be inserted into the tubular portion 33, and the lock piece 25 may be in the unlocked position in the tubular portion 33, and may be in any form as long as it is arranged so as to be in the locked position when connected.

The resilient portion 50, the locking step portion 28, and the lock release button locking portion 54 are not always necessary, and may have no locking means as shown in FIG. As long as the lock release button 27 enters the opening 53 and the lock piece 25 moves to the lock position, the lock state is maintained unless the lock release button 27 is pressed by the elastic force of the lock arm 22 itself. It cannot be released.

Further, even if only the resilient portion 50 is provided, it is possible to prevent rattling at the time of connection.
Even if 0 is not provided for locking the lock arm 22,
There is a point to provide.

Of course, either the holding of the locked position by the locking end 23 and the holding portion 51 or the holding of the locked position by the locking step 28 and the lock release button locking portion 54 is provided with the locked position. Needless to say, the effects of the present invention can be obtained even with the use of such a material.

For example, as shown in FIG.
8 and locking end 2 without locking button locking portion 54
3 and the holding section 51 may be used to hold the locked state. Alternatively, as shown in FIG. 28, the locking step section 28 and the lock release button do not have the locking end 23 and the holding section 51. The locked state may be held only by the locking portion 54.

It is needless to say that if both the structures are provided and the locked state is held as in the present embodiment, the holding can be surely ensured.

Further, a saw-toothed unevenness which increases the frictional force on both or one of the locking step portion 28 and the lock release button locking portion 54 or a roughened surface increases the frictional force. It may lock.

Similarly, the holding portion 51 of the resilient portion 50 may be formed by providing the resilient portion 50 with the groove-shaped holding portion 51 or by providing the resilient portion 50 with a protruding portion.

As shown in FIGS. 1 and 25 near the distal end of the lock arm 22, a parallel protrusion may be provided at the position where the lock release button 27 is pressed down, and a non-slip 29 may be provided. In the present embodiment, in order to release the lock, the lock release button is pressed down while moving in the direction of the base portion of the female member 30 against the urging force of the resilient portion. The operability is improved by providing.

The resilient portion 50 may be a cantilever like a pair of double doors as in this embodiment, or may be a continuous band as shown in FIG. Although not shown, it may be provided projecting from the front wall 36 or the rear wall 37. In short, any shape may be used as long as the urging force can be effectively applied to the tip of the male member when the buckle is connected.

If the shape of the resilient portion 50, the male member 1
If the leading end of the lock arm 22 does not come into contact with the resilient portion 50 and is fixed at an undesired position, an appropriate spacer 26 can be provided on the back side of the lock arm 22. . The spacer 26 may be provided on the rear wall side of the distal end of the lock arm as in this embodiment, or may be provided on the rear wall, and its shape is not limited as long as the lock arm can be guided. .

When the resilient portion 50 is formed as a pair of cantilever beams as in the present embodiment as shown in FIG. 7, a space is formed at the center, and this space is used to make use of the space as shown in FIG. It is desirable to provide a columnar reinforcing member 52 so as to connect the front wall 36 and the rear wall 37. With this reinforcing material 52,
It is possible to increase the strength of the cylindrical portion.

In the present embodiment, the slope portion 55 is formed in a plane. However, the function of the present invention is exhibited by the shapes of the lock piece 25, the contact portion 20, and the cylindrical portion 33 as a whole. Needless to say, it can be appropriately modified.

In addition, the connecting arm 13, which constitutes the present invention,
All parts such as the lock arm 25 and the cylindrical portion 33 can be changed in shape, material, size, etc. so that the present invention can be carried out more appropriately without departing from the gist of the present invention. Needless to say.

[0099]

According to the buckle according to the first aspect, since the buckle is automatically locked only by inserting the male member into the female member, the buckle can be easily locked even by a first-time user without troublesome operation, and can be locked. This has the effect of not forgetting to do it. Once locked, there is also the effect that the locked state is maintained and the lock is not accidentally released. Further, when the lock is released, there is also an effect that the lock can be released with one touch only by pressing the lock release button. And, while having such an effect, the number of parts of the buckle is composed of only two points of the male member and the female member, and the number of parts can be extremely reduced and the structure can be simplified, so that the production cost can be reduced. I can do it. And, from the small number of parts and the efficient internal space efficiency, there is an effect that an extremely thin buckle can be obtained while having the above functions. for that reason,
When the lock release button is attached to the pants belt or the like with the body side, the lock mechanism is not visible from the outside, and the flat back wall is visible, so that the lock is not detected by others. Further, the lock release button is not carelessly operated.

According to the buckle according to the second aspect, in addition to the effect of the buckle according to the first aspect, since the resilient portion is provided, there is an effect that rattling during connection is eliminated.

According to the buckle according to the third aspect, in addition to the effect of the buckle according to the second aspect, the locked state is held by the locking end and the holding portion, and it is possible to prevent undesired unlocking. On the other hand, when the lock is released, there is also an effect that the lock can be released by one touch only by pressing the lock release button.

According to the buckle of the fourth aspect, in addition to the effect of the buckle of the second or third aspect, the locking state is maintained because the locking step portion and the lock release button locking portion are provided. There is an effect that can be. Furthermore, the locking end and the holding portion according to claim 3 can be provided together, so that the lock can be more securely held. Even in this case, the lock is released only by pressing the lock release button, and the locked state can be released by an extremely simple operation.

According to the buckle of the fifth aspect, in addition to the effect of the buckle of the third or fourth aspect, a simple and reliable locking mechanism utilizing the urging force of the elastic portion. There is an effect that can be.

According to the buckle according to the sixth aspect, in addition to the effect of the buckle according to any one of the third to fifth aspects, a separate part is required because the resilient portion can be formed as a part of the female member. However, there is an effect that a biasing force can be applied to the male member. Further, there is an effect that the locking end portion can be reliably held by the groove-shaped holding portion.

According to the buckle according to the seventh aspect, in addition to the effect of the buckle according to any one of the third to fifth aspects, since the resilient portion is formed in a belt shape, the cantilever is provided. There is an effect that it is more advantageous in terms of strength and durable than those having a shape.

According to the buckle of the eighth aspect, in addition to the effect of the buckle of the first or seventh aspect, there is an effect that the locking end portion can be prevented from being undesirably caught near the resilient portion. is there.

According to the buckle of the ninth aspect, in addition to the effect of the buckle of the first or eighth aspect, there is an effect that the lock release button of the lock arm can be securely inserted into the opening. .

According to the buckle according to the tenth aspect, in addition to the effect of the buckle according to the first or ninth aspect, when the male member is inserted into the female member, the lock is not coplanar with the connecting arm. There is an effect that the button can be easily inserted into the cylinder.

According to the buckle of the eleventh aspect, in addition to the effect of the buckle of the second to tenth aspects, even if the lock is released once, the connected state can be maintained in the unlocked state. Also, there is an effect that relocking becomes possible only by pressing the male member against the female member.
Therefore, even if the lock is released once, it can be re-locked without disconnecting it.For example, if the lock cannot be separated in any case during use such as a parachute harness, even if the lock is released for some reason It is possible to relock the buckle without separating it.

[Brief description of the drawings]

FIG. 1 is a front view of a buckle according to a first embodiment of the present invention in a separated state.

FIG. 2 is a side view of the male member of FIG.

FIG. 3 is a longitudinal sectional view of a lock arm of the male member shown in FIG. 1;

FIG. 4 is a front view of the male member of FIG. 1 as viewed from the distal end side.

FIG. 5 is a side view of the female member shown in FIG. 1;

FIG. 6 is a longitudinal sectional view of the female member shown in FIG. 1;

FIG. 7 is a view of the female member of FIG. 1 as viewed from an insertion port side.

FIG. 8 is a front view 1 showing a buckle connecting process of the first embodiment.

FIG. 9 is a front view 2 showing a buckle connecting process of the first embodiment.

FIG. 10 is a front view 3 showing a buckle connecting process of the first embodiment.

FIG. 11 is a front view 4 showing a buckle connecting process of the first embodiment.

FIG. 12 is a front view 5 showing a buckle connecting process of the first embodiment.

FIG. 13 is a front view 6 showing a buckle connecting process of the first embodiment.

FIG. 14 is a front view 7 showing a process of connecting the buckle according to the first embodiment.

FIG. 15 is a front view 8 showing a buckle connecting process of the first embodiment.

FIG. 16 is a front view 9 showing a buckle connecting process of the first embodiment.

17 (A) to 17 (I) are diagrams showing changes in the connection arm and the lock arm in FIGS. 8 to 16 as viewed from the tip of the male member.

FIGS. 18A to 18D are side views showing changes in the connection arm and the lock arm in FIGS.

19 (E) to 19 (I) are diagrams showing changes in the connection arm and the lock arm in FIGS. 12 to 16 as viewed from the side.

FIG. 20 is a front view showing an engagement portion of the buckle according to the second embodiment.

FIG. 21 is a cutaway front view of an engagement portion of a buckle according to a third embodiment.

FIG. 22 is a female member showing the first resilient portion as viewed from the direction of the insertion opening.

FIG. 23 is a female member viewed from the direction of the insertion opening, showing the second elastic portion.

FIG. 24 is a front view of the buckle showing a third elastic portion and a locking end portion.

FIG. 25 is a partial cross-sectional view of the vicinity of a lock arm distal end showing a locking end, a lock release button, a locking step, and the like according to the present embodiment.

FIG. 26 is a partial cross-sectional view 1 showing the action of the spacer near the tip of the lock arm.

FIG. 27 is a partial cross-sectional view 2 showing a modification of the distal end portion of the lock arm.

FIG. 28 is a partial cross-sectional view 3 showing a modification of the tip end of the lock arm.

FIG. 29 is a partial cross-sectional view 4 showing a modification of the distal end portion of the lock arm.

FIG. 30 is a reference diagram 1 showing a conventional automatic lock buckle.

FIG. 31 is a reference diagram 2 showing a conventional auto-lock buckle.

FIG. 32 is a reference diagram 3 showing a conventional buckle of an automatic lock.

FIG. 33 is a view showing a modified example of the insertion port 34 and the lock arm 22.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Male member 11 Base part 12 Belt mounting part 13 Connecting arm 14 Flexible shaft part 16 Engaging body 17 Engaging part 20 Contact part 22 Lock arm 23 Locking end part 24 Flexible shaft part 25 Lock piece 27 Lock release button 28 Engagement step part 30 Female member 31 Base part 33 Cylindrical part 34 Insertion opening 35 Side wall 36 Front wall 37 Back wall 40 Window-like opening 41 Engagement receiving part 50 Resilient part 51 Holding part 53 Opening 54 Unlocking Button locking part 55 Slope

[Procedure amendment]

[Submission date] February 15, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Buckle

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin buckle with a lock, and more particularly, to a belt or the like provided with a lock device that has a small number of parts and is thin, but is hard to be unlocked and easy to relock. The present invention relates to a buckle used for connection of the buckle.

[0002]

Conventionally, in the buckle of the belt coupling, when the male and female members is in the connected state, in order to prevent the unexpected external force is Tsu pressurized <br/> Wa buckle separated, the connected state A buckle provided with a lock mechanism for locking the buckle has been proposed.

As an example of such a buckle, Japanese Utility Model Laid-Open No.
And JP-A-4-221502. In these buckles, the male member includes a pair of flexible arms having an engagement claw, and the female member includes a tubular portion having an engagement portion that can be engaged with the engagement claw. Is provided with a lock mechanism for locking the connection between the male member and the female member.

This lock mechanism has a lock member having a pair of leg pieces capable of preventing the pair of flexible arms from being bent inward during connection, and the pair of leg pieces are provided inside the flexible arm. The flexible arm is slidable between a lock position for preventing bending of the flexible arm and an unlocking position for enabling bending of the flexible arm inward. Then, the lock member is manually operated to the lock position to lock the connection state between the male member and the female member, and the lock member is manually operated to the unlock position to perform the separation operation of the male member. I was

On the other hand, for example, Japanese Utility Model 5-2
There is an automatic locking buckle that automatically locks the connection state at the same time as the connection between the male member and the female member as proposed in JP-A-0992.

This buckle is composed of a male member 60 and a female member 65 as shown in FIG. The male member 60 has a through hole 62 that opens in a plate-shaped insertion portion 61 perpendicular to the insertion axis X, and a block 63 that is movable in the insertion axis X direction is provided in the through hole 62. . Female member 65
Is an elastically deformable hook 66 having a claw 67 at its tip.
And flexible pieces 68, 68 which restrict the insertion amount of the insertion portion 61 of the male member 60 and which are bent further in the insertion direction and resilient when inserted deeper.

According to this buckle, when the male member 60 and the female member 65 are connected, the distal end of the insertion portion 61 of the male member 60 comes into contact with the claw 67 of the female member 65, and the hook 66 is elastically moved outward. Enter while deforming. At this time, when the distal end portion passes through the claw 67, the claw 67 pushes the block 63 in the anti-insertion direction, and the claw 67 enters the through hole 62. And
The male member 60 and the female member 65 are connected with each other by engagement of the distal end portion and the claw 67, and the state is maintained and a locked state is established.

In order to separate the connected male member 60 and female member 65, the male member 60 is inserted deeper into the female member 65. Due to this deep insertion, the flexible pieces 68, 68 are pushed by the distal end portion of the insertion portion 61 to bend and generate a resilient force in the anti-insertion direction. Further, as the insertion portion 61 enters, the block 63
Enters the lower portion of the claw 67, and the block 63 is held by the female member 65 due to the elasticity of the hook 66.

When the male member 60 is pulled out in the opposite direction,
The block 63 is inserted into the through-hole 62 while being
Relative to the tip side. By further withdrawal, the pawl 67 moves from above the block 63 to above the distal end portion , and the insertion portion 61 is pulled out of the female member 65 and separated therefrom.

However, such a conventional buckle requires a lock member different from the male member and the female member, or a separate component such as a block in order to form the lock mechanism. Therefore, the number of parts constituting the buckle becomes at least three or more, and the material cost increases, and there is a problem that the assembling work is required. In addition, there is a problem that the cost of the mold for forming the component parts increases and the product price becomes high.

Furthermore, in the former two buckles, the connecting operation is complicated, and sometimes the lock may be forgotten. In the latter buckle, the male member is
If too much is inserted into the female member 65 , the block 6
3 enters the lower part of the claw 67 and becomes separable, and there is a problem that the buckle is separated without being connected. Further, when the separation is forgotten during the separation operation, there is a problem that the connection and the lock cannot be performed unless the separation is completed and then reinserted.

In order to solve the above problem, the present inventor has disclosed in Japanese Patent Application No. 9-16237 a special lock mechanism part which is unnecessary and can be constituted by two points, so that the production cost can be reduced and the connection and connection can be reduced. A buckle with an automatic lock mechanism that can be automatically locked at the same time and that can be re-locked even once unlocked has been proposed.

The structure is as shown in FIGS. 31 and 32.
To consist male member 70 and female member 90. connectable male member 70, the engaging body 74 and the engaging portion 77 and the abutment
A pair of connecting arms 73 having a portion 80 and a locking end 83
And a lock piece 85 and a lock that can be relative to the contact portion 80
It has a lock release button 87 with a stop step portion 88, and a lock arm 82 of the lock piece 85 may take a locked position and an unlocked position.

The female member 90 has a pair of window-like openings 10 through which the engaging members 74 of the pair of connecting arms 73 inserted can be exposed.
0 and a pair of engagement receiving portions 101 engageable with the engagement portion 77.
A cylindrical portion 93 having a locking end portion 83 engageable with the holding
A resilient portion 110 having a portion 111 and capable of holding the inserted lock arm 82 at a locked position or an unlocked position;
Lock release button 87 is an exposed vital locking stepped portion 88 engageable with the opening 114 of the inserted locking arms 82,
A buckle characterized by comprising a push-up ridge 115 formed on the inner surface of the cylindrical portion 93 and capable of holding the lock piece 85 and the contact portion 80 in a non-relative state.

[0015]

However [0005] In the present aspect, as shown in FIGS. 31 and 32,
A lock piece 85 formed on the inner surface of the cylindrical portion 93 and a contact portion
A push-up ridge 115 for holding the non-relative state of the lock 80 is provided as an essential component, and a recess 113 around an engagement opening for pressing an elastic protrusion for unlocking in accordance with the push-up ridge 115. Therefore, the female member 90 needs a predetermined thickness for these portions, and this has a problem that the thickness of the buckle is prevented from being smaller than the predetermined thickness.

Further, there is a problem that a mechanism for maintaining the locked state is complicated and the structure cannot be simplified.

The present invention solves the above-mentioned problems, and does not require a separate locking mechanism component, and can be configured at two points.
The buckle has an automatic lock mechanism that can be automatically locked at the same time as the connection and can be re-locked once the lock is released. It is an object of the present invention to provide a buckle that can be used extremely widely because it can be made extremely thin to about 1/2, and the structure can be simplified, so that production cost can be further reduced.

[0018]

In order to achieve this object, a buckle according to claim 1 is an interconnectable buckle comprising a male member and a female member, wherein the female member is provided with an engaging member. The male member includes a pair of flexible connecting arms disposed on the same plane, and the male member is inserted into the female member near the distal ends of the pair of connecting arms. The engagement portions engageable with the engagement receiving portions are provided, respectively, and the pair of connecting arms are inserted into the cylindrical portion and elastically deformed by a side wall in a direction in which they are brought closer to each other. A receiving portion and the engaging portion are engaged with each other, and the pair of connecting arms are formed so as to be elastically deformed in a direction of approaching each other so that the engagement can be released, and the male member includes the pair of connecting arms. Between the pair of connecting arms. A lock arm having a lock release button disposed at a predetermined distance from the top, a flexible lock arm, and a lock piece is disposed near the tip of the lock arm; and the lock arm is connected to the pair of connection arms. Disengaging the connection by elastically deforming the arms in the direction of approaching each other is prevented by bringing the lock pieces into contact with each other, so that the buckle cannot be released from the locked position. The lock piece is movably formed at a lock release position which is a position at which a base portion is bent so that the connection arm and the lock piece are not brought into contact with each other and the connection of the buckle is enabled, and the male member is wherein by being inserted into the tubular portion of the female member, the lock release button of the lock arm abuts on one side of the inner wall of the tubular portion, and the pair of connecting arms When the lock arm is elastically deformed, the lock piece is moved to the release position, and the engagement portion is engaged with the engagement receiving portion. when engaged, the lock release button of the locking arm enters the opening provided in the tubular portion so as to open toward the outside, releasing the pressure from the inner wall of the female member Then, the lock piece is moved to the lock position by the elastic force of the lock arm itself.

In the buckle according to this configuration, the male member and the female member are only used to insert the male member into the female member, and the connection is performed with one touch without any operation and the lock is automatically performed. State. To release the connection, just press the lock release button to release the lock.

Further, the mechanism is simple, there is no waste, and the thickness of the buckle is extremely thin.

In the buckle according to the second aspect, in addition to the configuration of the buckle according to the first aspect, a buckle in front of the female member is provided.
On the inner bottom portion of the cylindrical portion, a resilient portion is provided, which is capable of abutting against the tip of the male member when connected to the male member and biasing the male member in a direction opposite to the insertion direction. I do.

In the buckle according to this configuration, since the male member can be urged by the resilient portion in the discharging direction opposite to the inserting direction at the time of connection, there is no play during connection.

In the buckle according to the third aspect, the buckle according to the second aspect is provided.
In addition to the configuration of the buckle described above, a lock end for locking the lock piece to the lock position is provided at a tip of the lock arm, and the resilient portion includes the lock end. An engaging holding portion is provided, and the holding portion can hold the locking end portion in the lock position by an elastic force of the resilient portion at the time of connection, and the engaging portion is configured to receive the engagement receiving portion. when engaged in part, said lock release button of the locking arm enters the opening provided in the tubular portion which is open towards the outside, the pressing force from the inner wall of the female member The lock is released and the lock piece is moved to the lock position by the elastic force of the lock arm itself, the locking end is held by the holding portion to hold the lock position, and the lock release button of the lock arm By pressing the locking end and the holding Characterized in that it said releasing engagement with the locking position of the.

In the buckle according to this configuration, in the state automatically locked by the structure according to claim 2, the locked state can be reliably maintained by locking the locking end portion with the holding portion of the resilient portion. You can do it.

Further, even with this structure, the number of parts is
There is no increase from two points.

Further, while maintaining the locked state, it is possible to release the lock very quickly and easily only by pressing the lock release button.

In the buckle according to the fourth aspect, the buckle according to the second aspect is provided.
Or, in the buckle according to claim 3, when the engagement portion is engaged with the engagement receiving portion, the lock release button of the lock arm enters the opening that opens outward. , wherein the locking piece by the elastic force of the lock arm itself is released the pressure from the inner wall of the female member is moved to the locking position, provided on the lock release button insertion opening side end locking step Part of the opening
The held in locked position by engaging the lock release button locking portion provided on the periphery of the insertion port side, and said engaging step portion by pressing the lock release button of the locking arm characterized in that it said releasing engagement with the locking position of the lock release button locking portion.

In the buckle according to this configuration, the buckle according to claim 2 or
As in the case of the buckle according to the third aspect, the locked state is automatically maintained only by inserting the male member into the female member, and again, no other parts are used.

[0029] Moreover, since it is possible to comprise simultaneously holding unit according to claim 3, further reliably be maintained locked state, is not to accidental release of the locked state.

Further, not only can the locked state be reliably maintained, but the locked state can be released with a single touch by simply pressing the lock release button. This can be released by simply pressing the lock release button even if the holding portion described in claim 3 is provided.

In the buckle according to the fifth aspect, the buckle according to the second aspect is provided.
Or in addition to the buckle arrangement according to any one of claims 4, wherein the lock release button locking portion and the tubular portion inner surface and the angle of the female member is formed at an acute angle, the engagement of the male member ledge portion and the angle between the outer surface of the lock release button, a sharp corresponding to said lock release button locking portion and the angle between the cylindrical portion surface of the female member, the male By the member being urged by the resilient portion,
The locking step portion and the lock release button locking portion face each other and are locked to hold the locked position.

In the buckle according to this configuration, the opening and the locking step are engaged by utilizing the urging force of the resilient piece, and the lock is maintained with a simple structure.

In the buckle according to the sixth aspect, the buckle according to the third aspect is provided.
Or in addition to the configuration of the buckle according to claim 5, wherein the spring-section, the tubular portion of a perpendicular surface of the insertion axis direction of the tubular portion longitudinal ends as base respectively A pair of elastic members extending inward in a cantilever manner, wherein the holding portion is formed in a groove shape extending substantially parallel to the longitudinal direction of the resilient portion. It is characterized by the following.

In the buckle according to this configuration, since the elasticity of the material of the buckle itself is used, the urging force can be applied to the male member without requiring a metal spring or the like for separately generating an urging force.

In the buckle according to the seventh aspect, the buckle according to the third aspect is provided.
In addition to the configuration of the buckle according to any one of Claims 5 to 5, the resilient portion is a surface orthogonal to the insertion axis direction of the cylindrical portion, and the respective side walls are formed in the longitudinal direction of the cylindrical portion. It is stretched in a belt shape so as to be connected, and the holding portion is formed in a groove shape extending substantially parallel to the longitudinal direction of the resilient portion.

In the buckle according to this configuration, since the elasticity of the material of the buckle itself is used, a biasing force can be applied to the male member without requiring a metal spring or the like for separately generating a biasing force. Instead, the strength can be significantly increased by connecting.

In the buckle according to the eighth aspect, the buckle according to the first aspect is provided.
In addition to the configuration of the buckle according to any one of claims 7 to 7, the locking end is provided at a rear end of a lock release button of the lock arm or at a lock arm side of the cylindrical portion rear wall.
A spacer comprising a projection is provided so that the portion comes into contact with the resilient portion.

With the buckle according to this configuration, it is possible to prevent an accident in which the locking end is inadvertently inserted near the resilient portion.

In the buckle according to the ninth aspect, the buckle according to the first aspect is provided.
In addition to the configuration of the buckle according to any one of claims 8 to 10, the lock arm is inclined toward the opening from the insertion axis direction, and the lock release button is formed flat.
The locking step is urged by the elastic force of the lock arm so as to slide on the inner wall of the cylindrical portion and to enter the opening .

In the buckle according to this configuration, the inner wall of the tubular portion can be made flat, so that the thickness of the buckle can be made extremely thin and the structure can be made very simple. Further, on the other hand, the lock release button of the lock arm can be reliably inserted into the opening.

The buckle according to claim 10, in addition to the configuration of the buckle according to any one of claims 1 to 9, a portion of the periphery of the insertion opening of the female member, the insertion of the locking arm an opening in the thin cylindrical portion so as to facilitate characterized in that it is extended.

[0042] In the buckle according to this configuration, it is possible to insert the male member to the female member, to easily insert the lock release button is not on the connecting arm and flush to the cylindrical portion.

In the buckle according to the eleventh aspect, in addition to the configuration of the buckle according to any of the second to tenth aspects, the lock release button is pressed from the lock position to the lock release position. when the lock release button is moved to the insertion port side is pressed against the resilient portion, the lock release button opposite direction returning said male member so becomes impossible and the direction of insertion into the opening Characterized by being formed so as to be movable.

In the buckle according to this configuration, once the lock is released, the lock can be held at the unlocked position, and even if the lock is released, if the connected state is not released, the buckle can be grasped again to easily lock again.

[0045]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 19 show an embodiment of the present invention. This buckle comprises a male member 10 and a female member 30 as shown in FIG. ,
It has a pair of connecting arms 13 having an engaging body 16, an engaging portion 17, and a contact portion 20, a flexible shaft portion 24, a lock piece 25, a lock release button 27, a locking end portion 23, and a locking step portion 28. A pair of lock arms 22 and a base 1 supporting them
1, the female member 30 is provided with an insertion opening 34 having a slope portion 55 , a pair of window-shaped openings 40 having an engagement receiving portion 41, and an opening 53 having a lock release button locking portion 54. A pair of resilient portions 50 having a shape portion 33 and a holding portion 51
And a base 31.

In this description, the near side in FIG. 1 is referred to as the front side, and the other side in FIG. 1 is referred to as the back side. FIG.
As shown in FIG. 5, the direction of the insertion axis of the male member 10 is X, and the direction of flexibility of the connecting arms 13, 13 perpendicular to the direction of the insertion axis is Y. Then, as shown in FIG. 2, the flexible direction of the lock arm 22 orthogonal to the X direction and the Y direction is defined as the Z direction.

The material of the buckle of the present embodiment is a nylon resin. As the material, other than nylon resin, various materials can be used according to the application, but a high-strength synthetic resin material having a material itself having spring elasticity, for example, a so-called engineering plastic such as polycarbonate and polyacetal is preferable. . The buckle according to the present embodiment can be implemented not only with resin but also with metal material or the like. Further, the present invention can be implemented even when a plurality of materials are combined.

As shown in FIG. 1, the male members 10 are symmetrically formed on both sides of the base 11 having the belt mounting portion 12 on the same plane which is substantially parallel to each other and extends in the direction of the insertion axis X so as to face each other. A pair of connecting arms 13, 13 and a lock arm 22 extending in the insertion axis X direction from the center of the base 11 between the connecting arms 13, 13.

Each of the connecting arms 13, 13 has an engaging body 16 projecting outward at the tip end thereof and having an inwardly tapered slope toward the outside. A step-shaped engaging portion 17 is formed at the end of the flexible shaft portion 14. Further, a contact portion 20 is provided inside the distal end portion of the engagement body 16.
Is provided.

In the present embodiment, the contact portion 20 is provided as shown in FIG.
As shown in FIGS. 2 and 4, the engagement body 16 is provided so as to extend from the distal end and protrude inward, and has a substantially V-shaped cross section tapered inward. At the tip of the engagement body 16, the outer surface of the contact portion 20 is formed in a curved shape that is continuous with the outer surface of the engagement body 16. The connecting arm 13 is connected to the cylindrical portion 33 at the time of connection.
By the side wall 35, when being separated, it is pinched by a finger and elastically deformed by the pressing of the engaging body 16 in the Y direction, and is bent inward along the Y axis in FIG.
It is formed so as to be elastically restored to the original shape shown in FIGS.

As shown in FIGS. 1, 3, and 4, the lock arm 22 has a locking end 23 projecting in the X direction, which is the insertion axis direction, at the tip end thereof, and a side perpendicular to the insertion axis X. Abutting portion 2 having a generally triangular shape and projecting in the direction of a wing.
Lock arms 25, 25 opposed to each other at a predetermined interval from 0, 20 and a lock release button 27 provided on a predetermined side (lower side in FIG. 3 ).
The flexible shaft portion 24 is formed so as to be elastically deformable in a direction substantially perpendicular to the elastic deformation direction of FIG.

Further, a slope is formed so as to continue from the rear side of the lock release button 27 to the locking end 23, so that the locking end 23 is formed so as to protrude to the most distal end of the male member 10 . .

The lock release button 27 is connected to one surface of the flexible shaft portion 24 of the lock arm 22 and the lock pieces 25 and 2.
Than one side of 5 is formed to project in a stepped, the insertion direction of the lock release button 27 opposite the surface facing the base portion 11, engaging stepped portion 28, the pressing surface of the lock release button 27 And an acute angle of about 45 °.

The female member 30 has a belt connecting portion 32 on one side of the base portion 31 and a cylindrical portion 33 having an insertion port 34 on the other end, and is provided on the base portion 31 side of the cylindrical portion 33. Is provided with resilient portions 50, 50 which are symmetrically flexible like double doors,
An opening 53 is formed in the front wall 36 of the cylindrical portion 33, and a slope 5 is formed inside the front wall 36 around the insertion port 34.
5 are formed.

The cylindrical portion 33 has side walls 35, 35 whose inner surfaces face each other with an inclined surface diverging toward the insertion opening 34.
The front wall 36 and the rear wall 37 which face each other substantially in front and rear are formed in a flat rectangular tube shape.

As shown in FIG.
The window-like openings 40, 40 penetrating in the Y-axis direction are provided to face each other, and the window-like openings 4 of the side walls 35, 35 are provided.
The edge closer to 0,40 is the engaging portion 1 of the male member 10 to be inserted.
It forms a 7, 17 engageable with the engaging receiving portion 41, 41. Note that the window-like openings 40, 40 are partially
6, a recess is formed in the rear wall 37 side.

In the present embodiment, the resilient parts 50, 50
As shown in FIGS. 6 and 7, each of the base portions 31 extends in a cantilever shape from both sides of the base portion 31 in the Y direction of FIG. 1 and faces each other. 6 and is provided with a holding portion 51 which is formed in a groove shape as shown in FIG. 6 and can be engaged with the locking end portion 23 of the lock arm 22. The free end of the resilient portion 50 is formed so as to be elastically deformable in the insertion axis X direction.

The opening 53 is formed near the base 31 of the front wall 36 so as to open in a U-shape with the base 31 open.

The slope portion 55 is provided inside the periphery of the insertion opening 34 of the cylindrical portion 33 on the side of the front wall 36, and is formed so that a part of the front wall 36 is tapered toward the insertion opening 34. The insertion opening 34 is formed so as to enlarge the insertion opening 34, and has a shape that does not hinder the insertion of the lock release button 27 when the male member 10 is inserted into the tubular portion 33. The slope portion 55 is formed by cutting the front wall 36 into a rectangular shape as viewed from the front as shown in FIG. 11 and a triangular shape as viewed from the side as shown in FIG.

Next, the operation of the buckle configured as described above will be described.

First, the connection between the male member 10 and the female member 30 will be described. When the male member 10 and the female member 30 are separated, the connecting arms 13 and 13 and the lock arm 2
2. The resilient pieces 50, 50 are in the normal positions shown in FIGS. 1 to 7, respectively, as described in the configuration of the present embodiment.

As shown in FIGS. 8 and 9, FIGS. 17A and 17B, and FIGS. 18A and 18B, the connecting arms 13 and 13 and the lock arm 22 of the male member 10 are connected to the female member. 30 and is inserted into the cylindrical portion 33 in the direction of the insertion axis X.

In the following, the parts which act simultaneously symmetrically to the left and right will be described on only one side, and the description on the other side will be omitted.

When the connecting arm 13 and the lock arm 22 are inserted through the insertion opening 34,
Of the lock arm 22 abuts against the inner surface of the side wall 35.
The lock release button 27 abuts on the slope portion 55. In this case, depending on the thickness of the buckle, when the lock arm 22 is advanced along the X direction, the connection arm 1
3 may be hooked on the rear end of the insertion port 34, in which case the male member
If the female member 30 is inserted while being bent, it can be inserted without being caught. The lock release button 27
As the distance between the pressing surface of the lock arm 22 and the plane including the connecting arms 13 and 13 increases, the resilience of the lock arm 22 can be increased if the same material is used.
Insertion becomes difficult. Therefore, in the present embodiment, the slope portion 55 is provided only on the front wall 36 side, but the slope portion 56 may be provided on the rear wall 37 side as shown in FIG. If the inclined portion 57 is provided and the male member 10 is more easily inserted into the female member 30, a thinner buckle can be obtained.

If the center axis of the male member 10 is inserted obliquely with respect to the center axis of the female member 30 at this time, the outer surface (the contact portion 20
Of the male member 10 as it is inserted together with the tapered slope of the male member 10 (including the outer surface of the male member 10).
Is corrected and the vehicle enters the proper insertion posture.

As shown in FIGS. 10, 17 (C) and 18 (C), as the insertion of the male member 10 proceeds, the inner surfaces of the side walls 35, 35 gradually move the engaging bodies 16, 16 of the connecting arms 13, 13. To inward to elastically deform the connecting arms 13, 13, and between the connecting arms 13, 13, that is, the contact portions 20, 20.
The distance approaches. The lock release button 27 of the lock arm 22 slides on the slope 55, and the slope of the slope 55 causes the lock arm 22 to gradually move in the arrow Z direction (see FIG. 2).
Then , the lock piece 25 approaches the rear wall 37 side. Then, the connecting arm 13 is moved in the direction of arrow Y (see FIG. 1).
11) and the bending of the lock arm 22 in the direction of the arrow Z , the contact portion 20 and the lock piece 25 pass each other as shown in FIGS. 11, 17 (D) and 18 (D). And the insertion of the male member 10 proceeds.

12 to 16, FIGS. 17 (E) to (I), FIG.
As shown in (E) to (I), as the insertion proceeds, the locking end 23 first reaches the resilient portion 50 and presses it (FIG. 19).
(E)).

Next, the engaging portion 17 reaches the engaging receiving portion 41, the engaging body 16 enters the window-like opening 40, and the connecting arms 13, 13 are moved by their own resilient force as indicated by arrows in FIG. It opens vigorously outward in the direction, and the engaging bodies 16
Are exposed to the outside of the window-like openings 40 , 40 (FIG. 12, FIG. 1).
7 (E), FIG. 19 (E) ) The connection state is entered. Therefore, it is recognized that the connection is completed without visual confirmation. At this stage, the engaging portions 17, 17 of the engaging bodies 16, 16
There is a gap between the engagement receiving portions 41, 41, and it is not completely locked yet.

Further, the insertion of the male member 10 proceeds, and in the next stage, the locking step 28 reaches the opening 53, the lock arm 22 is released from the pressing force by the front wall 36, and (Figs. 13-14, 17 (F)-)
(G), FIGS. 19 (F) to (G)). The lock release button 27 is exposed through the opening 53.

In the next step, the locking end 23 is moved to the deepest part of the resilient part 50 so as to slide on the grooved slope of the holding part 51 of the resilient part 50 and is fixed (FIG. 19G). ).

[0072] In the next step, by the elastic force of the resilient portion 50, the male member 10 is pushed back in the insertion direction and the opposite direction, the locking stepped portion 28 is brought to the lock release button locking portion 54 It is touched and faced and locked. Also, window-shaped openings 40, 4
0 and the engagement portions 17, 17 of the connecting arms 13, 13 are closely engaged with each other, and can withstand a large load.
The lock state is established at the lock position (corresponding to FIG. 4) opposite to 0, and the connection between the male member 10 and the female member 30 is completed. At this time, the free ends of the resilient portions 50, 50 connect the locking end 23 of the lock arm 22 to the holding portions 51, 50.
In the state where it is held at 51 , it almost recovers from elastic deformation, and the locked position is stably held in a state where the locking end 23 of the lock arm 22 is pressed or not (FIG. 19).
(I)).

That is, by a series of these operations, the male member 10 and the female member 30 are automatically brought into the connection locked state at the same time as the connection with one touch.

In this state, the male member 10 is connected to the female member 3
When the engaging body 16 is pressed inward in order to separate from the zero, the connecting arm 13 bends inward, and accordingly, the contact portion 20 moves inward, and the inner end of the contact portion 20 is locked. It contacts the outer end of the piece 25. This allows the connecting arm 1
3 deflection of the inwardly is prevented, the engaging portion 17 and the engagement receiving portion 4
Reference numeral 1 denotes a state where the engagement state cannot be released. Accordingly, the engagement release is prevented, and the connection between the male member 10 and the female member 30 is locked.

[0075] Also, the male member 10 and female member 30, the engagement between the engaging portion 17 and the engagement receiving portion 41, and a locking stepped portion 28
The two members 1 are engaged at a total of three positions, namely, engagement with the opening 53.
High tensile strength is maintained between 0 and 30. Incidentally, the engaging step portion 28 and the lock release button engaging portion 54 of the lock arm 22 tip, so it engages the insertion axis X line, to produce a twisting movement between the male member 10 and female member 30 Even if an external force acts, the connected state can be stably maintained.

In order to separate the male member 10 and the female member 30 from the connected state, first, the lock release button 27 of the male member 10 exposed at the opening 53 of the female member 30 is pressed inward (in the direction of arrow Z) with the fingertip. (Refer to FIG. 2) ) (FIG. 17 (F), FIG. 19 (F)). As a result, the locking step 28 presses the lock release button locking section 54 in the Z direction, so that the locking step 28, that is, the entire male member 10 is inserted in the insertion direction X along the slope of the lock release button locking section 54. Susumu no to. Therefore, lock arm 2
2 is elastically deformed and bent, and the slope of the holding portion 51 is locked to the locking end 2.
3 slides toward the back while further elastically deformed in the insertion direction of the elastic portion 50 by pressing in the Z-direction, the locking arm 22, locking stepped portion 28 is disengaged from the lock release button locking portion 54 The engagement between the two is released, and the male member 10
Next, the moving direction is substantially reversed, and the elastic member 50 is pushed back in the direction opposite to the insertion direction X by the elastic force of the elastic portion 50. for that reason,
Even if the locking step 28 attempts to move forward due to the resiliency of the lock arm 22, it is pushed back to a position where it does not already engage with the unlocking button locking portion 54, so that the unlocking button 27 is no longer in the opening. 53 cannot be entered. If the lock arm 22 is in this state, the lock piece 25 approaches the front wall 36 side, and is in the unlocked position in a non-relative state with the contact portion 20.

In this state, the male member 10 and the female member 3
0 and is still in a connected state in which the engaging portion 17 and the engagement receiving portion 41 is engaged, when discouraged separated during the separation operation, the male member 10 of the female member 30 in this state Perform push-in operation. By the pushing operation, the male member 10 slightly moves in the insertion axis X direction, and the locking end portion 23 of the lock arm 22 is moved.
Presses the resilient portion 50 in that direction. Elastic portion 50 is elastically deformed by the pressing, whereby the engagement end 23 and the coercive
The engagement with the holding portion 51 is released, and the lock arm 22 elastically returns in the front direction along the Z axis. At this time, the lock arm 22 returns to the lock position with a click sound, and the holding portion 51 of the resilient portion 50 elastically presses and holds the locking end portion 23 in the locked state, as shown in FIGS. I), and returns to the connection locked state shown in FIG. That is, it can be easily re-locked by grasping and returning.

In order to release the connection, when the locks 22 are further pressed from the unlocked state in a state where the lock arms 22 are in the unlocked position in a direction to approach each other, the connection arms 13, 13 are pressed. Is bent inward, and the contact portions 20, 20 move inward. At this time, the contact portions 20, 20 are in a non-relative state to the lock pieces 25, 25, and the contact portions 2
0, 20 and the lock pieces 25, 25 overlap each other so that the engagement portions 17, 17 and the engagement receiving portions 41, 4 are finally reached.
1 is released (FIGS. 11 and 17 (F)).

The elastic return force of the resilient portion 50, the tapered gradient of the outer surface of the engaging body 16 and the elastic return force of the connecting arm 13, the inclined surface of the inner surface of the side wall 35, the elastic return force of the lock arm 22, The male member 10 is urged in the withdrawal direction and separated from the female member 30 by cooperating with the gradually increasing gradient of the projecting height of the slope portion 55 and the like. In this separation the way, the lock piece 25 is located in the direction of arrow Z by the slope portion 55 is controlled by elastic return the lock arm 22 and the connecting arm 13 is in the original form,
The resilient portion 50 also elastically returns to its original shape.

[0080] In addition, at the time of buckle use, prior to the female member 30
If wall 36 is mounted so as to be positioned on the body side of the wearer, the locking solutions for unlocking the movement or the like of the wearer
An unexpected external force is prevented from being applied to the release button 27, and the connection lock state between the male member 10 and the female member 30 is stably maintained. In addition, if the unlock button 27, which is an operation button for unlocking, is attached to the body side, it is not possible to see the connection lock state from the outside, which is advantageous for crime prevention.

Further, when separating the buckle,
It can be easily separated by using only three fingers of one hand. That is, the lock release button 27 can be pressed with the index finger, and at the same time, the connection arms 13 and 13 can be pressed with the thumb and middle finger, and the buckle can be quickly unlocked and separated with one hand. .

Although the present invention has been described based on one embodiment, the present invention is not limited to the above-described embodiment, and various modifications and changes can be made without departing from the gist of the present invention. Can be easily inferred.

[0083] For example the second embodiment of the I <br/> urchin shown in FIG. 20, the locking portion 17 and the engagement receiving portion 41 for connecting the engagement receiving portion 41, puncture the female member 30 A pair of window-like openings 40 provided, and a window-like opening 40 substantially parallel to the insertion axis direction X of the male member 10 from the insertion port side outside the cylindrical portion of the female member 30.
The and a pressing arm 45 flexible that extends to cover, the distal end portion of the pressure arm 45 includes a pressing portion 47 which is entered can be projected from the window-like opening 40, the pressing portion 47 Has a locking projection elastically locked to the periphery of the window-like opening 40, and the engaging portion 17 has a hook-like shape that can be locked to the window-like opening 40 disposed at the tip of the connecting arm 13. When the pressing arm 45 is pressed, the pressing portion 47
If the connection is released by pressing 7, it is preferable to carry out the present invention.

Further, as in the third embodiment shown in FIG. 21, the engagement receiving portion is formed by a pair of window-shaped openings 40 formed in the female member 30 and the female member 30. The insertion direction X of the male member is set so as to connect the insertion port side outside the cylindrical portion 33 and the female base portion.
And a flexible pressing band 46 formed so as to cover the window-shaped opening 40 substantially in parallel with the window-shaped opening 40. It comprises a section 47, the engaging portion 17 disposed at the distal end of the connecting arm 13
Has a hook shape that can be locked to the window-shaped opening 40, and the pressing portion 47 presses the pressing band 46 so that the engaging portion 1
The connection may be released by pressing the button 7.

In this embodiment, the lock arm 22 is inclined by about 2 ° to the front side with respect to the insertion axis of the male member, but these angles are determined by the cylindrical portion 33 and the lock release button 2.
7, the lock arm 22 may be parallel to the direction of the insertion axis X. In short, the lock arm 22 and the connecting arms 13, 13 may be used.
Can be inserted into the tubular portion 33, and the lock piece 25 may be in the unlocked position in the tubular portion 33, and may be in any form as long as it is arranged so as to be in the locked position when connected.

The resilient portion 50, the locking step portion 28, and the lock release button locking portion 54 are not always necessary, and may have no locking means as shown in FIG. As long as the lock release button 27 enters the opening 53 and the lock piece 25 moves to the lock position, the lock state is maintained unless the lock release button 27 is pressed by the elastic force of the lock arm 22 itself. It cannot be released.

Further, even if only the resilient portion 50 is provided, it is possible to prevent rattling at the time of connection.
Even if 0 is not provided for locking the lock arm 22,
There is a point to provide.

Of course, either one of holding the locked position by the locking end portion 23 and the holding portion 51 and holding the locked position by the locking step portion 28 and the lock release button locking portion 54 is provided as the locked position. Needless to say, the effects of the present invention can be obtained even with the use of such a material.

For example, as shown in FIG.
8 and locking end 2 without locking button locking portion 54
3 and the holding section 51 may be used to hold the locked state. Alternatively, as shown in FIG. 28, the locking step section 28 and the lock release button do not have the locking end 23 and the holding section 51. The locked state may be held only by the locking portion 54.

It is needless to say that if both the structures are provided and the locked state is held as in the present embodiment, the holding can be surely ensured.

Further, a saw-toothed unevenness which increases the frictional force on both or one of the locking step portion 28 and the lock release button locking portion 54 or a roughened surface increases the frictional force. It may lock.

Similarly, the holding portion 51 of the resilient portion 50 may be formed by providing the resilient portion 50 with the groove-shaped holding portion 51 or by providing the resilient portion 50 with a protruding portion.

As shown in FIGS. 1 and 25 near the distal end of the lock arm 22, a parallel protrusion may be provided at the position where the lock release button 27 is pressed down, and a non-slip 29 may be provided. In the present embodiment, in order to release the lock, the lock release button 27 is pressed down while moving in the direction of the base portion of the female member 30 against the urging force of the resilient portion 50. The operability is improved by providing the stopper 29.

The resilient portion 50 has a cantilever shape such as a pair of double doors as in the present embodiment, and has a continuous shape like a first resilient portion shown in FIG. It may be in the form of a band, or may be provided projecting from the front wall 36 or the rear wall 37 (not shown). In short, any shape may be used as long as the urging force can be effectively applied to the tip of the male member when the buckle is connected.

If the shape of the resilient portion 50, the male member 1
If the distal end portion of the lock arm 22 is disengaged from the elastic portion 50 and is fixed at an undesired position, FIG.
An appropriate spacer 26 may be provided on the back side of the lock arm 22 as shown in FIG. This spacer 26
It may be provided on the back wall side of the tip of the lock arm as in the present embodiment, or may be provided on the back wall 37. The shape of the lock arm is not limited as long as it can be guided.

When the resilient portion 50 is formed as a pair of cantilever beams as in the present embodiment as shown in FIG. 7, a space is formed in the center portion . It is desirable to provide a columnar reinforcing member 52 so as to connect the front wall 36 and the rear wall 37 such as the second elastic portion shown.
The reinforcing member 52 makes it possible to increase the strength of the tubular portion 33 .

In the present embodiment, the slope portion 55 is formed in a plane. However, the function of the present invention is exhibited by the shapes of the lock piece 25, the contact portion 20, and the cylindrical portion 33 as a whole. Needless to say, it can be appropriately modified.

In addition, the connecting arm 13, which constitutes the present invention,
All parts such as the lock arm 25 and the cylindrical portion 33 can be changed in shape, material, size, etc. so that the present invention can be carried out more appropriately without departing from the gist of the present invention. Needless to say.

[0099]

According to the buckle according to the first aspect, since the buckle is automatically locked only by inserting the male member into the female member, the buckle can be easily locked even by a first-time user without troublesome operation, and can be locked. This has the effect of not forgetting to do it. Once locked, there is also the effect that the locked state is maintained and the lock is not accidentally released. Further, when the lock is released, there is also an effect that the lock can be released with one touch only by pressing the lock release button. And, while having such an effect, the number of parts of the buckle is composed of only two points of the male member and the female member, and the number of parts can be extremely reduced and the structure can be simplified, so that the production cost can be reduced. I can do it. And, from the small number of parts and the efficient internal space efficiency, there is an effect that an extremely thin buckle can be obtained while having the above functions. for that reason,
When the lock release button is attached to the pants belt or the like with the body side, the lock mechanism is not visible from the outside, and the flat back wall is visible, so that the lock is not detected by others. Further, the lock release button is not carelessly operated.

According to the buckle according to the second aspect, in addition to the effect of the buckle according to the first aspect, since the resilient portion is provided, there is an effect that rattling during connection is eliminated.

According to the buckle according to the third aspect, in addition to the effect of the buckle according to the second aspect, the locked state is held by the locking end and the holding portion, and it is possible to prevent undesired unlocking. On the other hand, when the lock is released, there is also an effect that the lock can be released by one touch only by pressing the lock release button.

According to the buckle of the fourth aspect, in addition to the effect of the buckle of the second or third aspect, the locking state is maintained because the locking step portion and the lock release button locking portion are provided. There is an effect that can be. Furthermore, the locking end and the holding portion according to claim 3 can be provided together, so that the lock can be more securely held. Even in this case, the lock is released only by pressing the lock release button, and the locked state can be released by an extremely simple operation.

According to the buckle according to the fifth aspect, in addition to the effect of the buckle according to any of the second to fourth aspects, a simple and reliable locking mechanism utilizing the urging force of the elastic portion is provided. There is an effect that can be done.

According to the buckle according to the sixth aspect, in addition to the effect of the buckle according to any one of the third to fifth aspects, a separate part is required because the resilient portion can be formed as a part of the female member. However, there is an effect that a biasing force can be applied to the male member. Further, there is an effect that the locking end portion can be reliably held by the groove-shaped holding portion.

[0105] According to the buckle of claim 7, in addition to the effects of the buckle according to any one of claims 3 to 5, since the elastic portion is formed in a belt shape, cantilever This is advantageous in that it is more advantageous in terms of strength and durable.

[0106] According to the buckle of claim 8, in addition to the effects of the buckle according to any one of claims 1 to 7, so that the hook leg in the vicinity of the elastic part is not caught undesirably There is an effect that can be.

[0107] According to the buckle of claim 9, it is possible to claim 1 in addition to the effects of the buckle according to any of claims 8 to enter the reliable opening the lock release button of the locking arm This has the effect.

[0108] According to the buckle of claim 10, in addition to the effects of the buckle according to any one of claims 1 to 9, when inserting the male member into the female member, the connecting arm on the same plane There is an effect that a lock release button that cannot be provided can be easily inserted into the cylinder.

According to the buckle according to the eleventh aspect, in addition to the effect of the buckle according to any one of the second to tenth aspects , even if the lock is once released, the connection state is still in the unlocked state. Since it can be maintained, there is also an effect that relocking becomes possible only by pressing the male member against the female member. Therefore, even if the lock is released once, it can be re-locked without disconnecting it.For example, if the lock cannot be separated in any case during use such as a parachute harness, even if the lock is released for some reason It is possible to relock the buckle without separating it.

[Brief description of the drawings]

FIG. 1 is a front view of a buckle according to a first embodiment of the present invention in a separated state.

FIG. 2 is a side view of the male member of FIG.

FIG. 3 is a longitudinal sectional view of a lock arm of the male member shown in FIG. 1;

FIG. 4 is a front view of the male member of FIG. 1 as viewed from the distal end side.

FIG. 5 is a side view of the female member shown in FIG. 1;

FIG. 6 is a longitudinal sectional view of the female member shown in FIG. 1;

FIG. 7 is a view of the female member of FIG. 1 as viewed from an insertion port side.

FIG. 8 is a front view 1 showing a buckle connecting process of the first embodiment.

FIG. 9 is a front view 2 showing a buckle connecting process of the first embodiment.

FIG. 10 is a front view 3 showing a buckle connecting process of the first embodiment.

FIG. 11 is a front view 4 showing a buckle connecting process of the first embodiment.

FIG. 12 is a front view 5 showing a buckle connecting process of the first embodiment.

FIG. 13 is a front view 6 showing a buckle connecting process of the first embodiment.

FIG. 14 is a front view 7 showing a process of connecting the buckle according to the first embodiment.

FIG. 15 is a front view 8 showing a buckle connecting process of the first embodiment.

FIG. 16 is a front view 9 showing a buckle connecting process of the first embodiment.

17 (A) to 17 (I) are diagrams showing changes in the connection arm and the lock arm in FIGS. 8 to 16 as viewed from the tip of the male member.

FIGS. 18A to 18D are side views showing changes in the connection arm and the lock arm in FIGS.

19 (E) to 19 (I) are diagrams showing changes in the connection arm and the lock arm in FIGS. 12 to 16 as viewed from the side.

FIG. 20 is a front view showing an engagement portion of the buckle according to the second embodiment.

FIG. 21 is a cutaway front view of an engagement portion of a buckle according to a third embodiment.

FIG. 22 is a female member showing the first resilient portion as viewed from the direction of the insertion opening.

FIG. 23 is a female member viewed from the direction of the insertion opening, showing the second elastic portion.

FIG. 24 is a front view of a buckle showing a second elastic portion and a locking end portion.

FIG. 25 is a partial cross-sectional view of the vicinity of a lock arm distal end showing a locking end, a lock release button, a locking step, and the like according to the present embodiment.

FIG. 26 is a partial cross-sectional view 1 showing the action of the spacer near the tip of the lock arm.

FIG. 27 is a partial cross-sectional view 2 showing a modification of the distal end portion of the lock arm.

FIG. 28 is a partial cross-sectional view 3 showing a modification of the tip end of the lock arm.

FIG. 29 is a partial cross-sectional view 4 showing a modification of the distal end portion of the lock arm.

FIG. 30 is a reference diagram 1 showing a conventional automatic lock buckle.

FIG. 31 is a reference diagram 2 showing a conventional auto-lock buckle.

FIG. 32 is a reference diagram 3 showing a conventional buckle of an automatic lock.

FIG. 33 is a view showing a modified example of the insertion port 34 and the lock arm 22.

DESCRIPTION OF SYMBOLS 10 Male member 11 Base part 12 Belt mounting part 13 Connecting arm 14 Flexible shaft part 16 Engagement body 17 Engaging part 20 Contact part 22 Lock arm 23 Locking end part 24 Flexible shaft part 25 Lock piece 27 lock release button 28 locking stepped portion 30 female member 31 the base portion 33 the cylindrical portion 34 insertion opening 35 side wall 36 front wall 37 rear wall 40 window-like opening 41 engaging receptacle 50 resiliently unit 51 holding portion 53 Opening 54 Lock release button locking part 55 Slope

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 ──────────────────────────────────────────────────続 き Continuing from the front page (71) Applicant 594181712 Keiji Minoba 4455 Nakanoho, Takegi-cho, Bugi-gun, Gifu (71) Applicant 597013582 Hirohisa Shibata 34-2, Marutsubo, Aizuma-cho, Chiryu-shi, Aichi (72) Inventor Mimi Tokuda Raw 1-18-18 Sekinoue, Seki City, Gifu Prefecture (72) Inventor Yoshiko Tokuda 1-18-2 Sekinoue, Seki City, Gifu Prefecture (72) Masako Araki 103, Ozakiyama 1-chome, Midori-ku, Nagoya City Room 103, Chatre Midorigaoka 72) Inventor Keiji Minoha 4455 Nakanoho, Takegi-cho, Bugi-gun, Gifu Prefecture (72) Inventor Hirohisa Shibata 34-2 Marutsubo, Aizuma-cho, Chiryu-shi, Aichi Prefecture

Claims (11)

[Claims] 1. An interconnectable buckle comprising a male member and a female member, wherein the female member includes a tubular portion having an engagement receiving portion, and the male member is disposed on the same plane. A pair of flexible connecting arms, and near the distal ends of the pair of connecting arms, engaging portions that can be inserted into the female member and engage with the engaging receiving portions are provided, respectively. The pair of connecting arms are inserted into the cylindrical portion and elastically deformed in a direction of approaching each other by a side wall so that the engagement receiving portion and the engaging portion are engaged with each other. The male member is disposed between the pair of connecting arms, and is formed so as to be elastically deformed in a direction of approaching to release the engagement.
A lock arm having flexibility provided with a lock release button arranged at a predetermined distance from a plane on which the pair of connecting arms are arranged, and a lock piece is arranged near a tip of the lock arm. ,
The lock arm releases the connection by elastically deforming the pair of connection arms in a direction to approach each other,
From the lock position, which is a position where the lock piece is prevented from contacting to disable the disconnection of the buckle, the base of the lock arm is bent to prevent the connection arm from contacting the lock piece. The lock piece is movably formed at a lock release position where the buckle can be disconnected, and the male member is inserted into the cylindrical portion of the female portion to lock the lock arm. The release button abuts one surface of the inner wall of the cylindrical portion, and the pair of connecting arms abuts and is pressed against the other opposing surface of the cylindrical portion, and the lock arm is elastically deformed. When the lock piece is moved to the lock release position, and the engagement portion is engaged with the engagement receiving portion, the lock release button of the lock arm opens outward. The lock piece enters the opening provided in the cylindrical portion, the pressing of the female portion from the inner wall is released, and the lock piece is moved to the lock position by the elastic force of the lock arm itself. And buckle. 2. The buckle according to claim 1, wherein the male member abuts on the inner bottom of the cylindrical portion of the female member at the time of connection with the male member, and the male member is in a direction opposite to the insertion direction. A buckle characterized by having a resilient portion that can be biased to the buckle. 3. The buckle according to claim 2, wherein a lock end for locking the lock piece at the lock position is disposed at a tip of the lock arm, and the elastic portion has A holding portion that can be engaged with the locking end portion is provided, wherein the holding portion can hold the locking end at the lock position by an elastic force of the resilient portion at the time of connection; When the lock receiving button is engaged with the engagement receiving portion, the lock release button of the lock arm enters an opening provided in a cylindrical portion that is open to the outside, and from the inner wall of the female portion, Is released, and the lock piece is moved to the lock position by the elastic force of the lock arm itself,
The locking end portion is held by the holding portion to hold the lock position, and by pressing the lock release button of the lock arm, the locking end portion and the holding portion are locked in the locked position. A buckle characterized in that the engagement of the buckle can be released. 4. The buckle according to claim 2, wherein the lock release button of the lock arm opens outward when the engagement portion is engaged with the engagement receiving portion. After entering the opening, the pressing of the female portion from the inner wall is released, the lock piece is moved to the lock position by the elastic force of the lock arm itself, and the insertion port side end of the lock release button. The lock step provided on the lock arm is held in the locked position by engaging with a lock release button lock provided on the periphery of the opening on the insertion port side, and the lock release of the lock arm is performed. A buckle wherein the engagement between the locking step and the lock release button locking part at the locked position can be released by pressing a button. 5. The buckle according to claim 2, wherein an angle formed between the lock release button engaging portion of the female member and the outer surface of the cylindrical portion is formed to be an acute angle, The angle formed by the locking step of the male member and the outer surface of the lock release button is an acute angle corresponding to the angle formed by the lock release button locking portion of the female member and the outer surface of the tubular portion. The male member is urged by the resilient portion, so that the locking step and the unlocking button locking portion face and lock, and hold the lock position. Buckle to do. 6. The buckle according to claim 3, wherein the resilient portion is a surface orthogonal to an insertion axis direction of the cylindrical portion and both ends in a longitudinal direction of the cylindrical portion. A pair of elastic members extending inwardly in a cantilever manner with the portions as base portions, wherein the holding portion extends substantially parallel to a longitudinal direction of the resilient portion. A buckle characterized by being formed in a groove shape. 7. The buckle according to claim 3, wherein the resilient portion is a surface orthogonal to an insertion axis direction of the cylindrical portion and extends in a longitudinal direction of the cylindrical portion. A buckle which is stretched in a belt shape so as to connect the respective side walls, and wherein the holding portion is formed in a groove shape extending substantially in parallel with a longitudinal direction of the resilient portion. 8. The buckle according to claim 1, wherein the locking end is provided at a rear end of the lock release button of the lock arm or at a lock arm side of a rear wall of the tubular portion. A buckle provided with a spacer formed of a protruding portion so as to abut on the resilient portion. 9. The buckle according to claim 1, wherein the lock arm is inclined toward the engagement opening from an insertion axis direction, and the lock release button is formed flat. The locking step is urged by the elastic force of the lock arm so as to slide on the inner wall of the cylindrical portion and to enter the engagement opening. 10. The buckle according to claim 1, wherein a part of a peripheral edge of an insertion opening of the female member has a thin cylindrical portion so that the lock arm can be easily inserted. A buckle characterized by having an extended opening. 11. The buckle according to claim 2, wherein when the lock release button is pressed from the lock position to the lock release position, the lock release button is released. The male member is formed so as to be movable in the direction opposite to the insertion direction so that the male member is pressed by the part and moved to the insertion port side, and the lock release button cannot be returned to the opening. Buckle to do.