JPH07313212A - Connector - Google Patents

Abstract

PURPOSE:To improve safety and durability by inserting the tip side of an insert piece in a space of the forward end inside of a receiver, facing the tip part of the insert piece to a refuge part of a movable member, and facing a locking projection of a fixed member in a locking hole of the insert piece. CONSTITUTION:In the case of connecting an insert piece 1 to a receiver 1, the tip side of the insert piece 2 is inserted in the space of the receiver 1. When the tip of the insert piece 2 is brought into contact with the contacting surface of a contact part 41 of a movable member 4, and the insert piece 2 is further inserted, a movable member 4 is moved backward against the energizing force of a spring 5 interposed in a fixed member 3. Whereupon, the tip side of the insert piece 2 is slid on the taper surface of the contact pat 41 and floated, so that the forward end part of the insert piece 2 is faced to a refuge part 42 formed on the movable member 4. At this time, a flange formed on the insert piece 2 is also faced to the refuge part 42, and a locking projection 32 fixed to the fixed member 3 is faced in a locking hole 22 formed on the insert piece 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting tool used for connecting both ends of a belt-shaped belt which is approached from both directions, and more particularly, a belt-shaped belt such as a chin belt in a helmet or a seat belt in a vehicle. The present invention relates to an improvement of a connecting tool for connecting a wire.

[0002]

2. Description of the Related Art Conventionally, there have been various proposals for a connecting tool used for connecting both front end portions of a belt-shaped belt which is approached from both directions. Inconvenience is pointed out.

First, regarding safety, that is, regarding maintenance of a predetermined connection state, there are some cases where the connection state is easily released depending on the action direction of the force, and a structural defect has been pointed out. There is something.

In addition, there are some which cannot easily recognize an abnormal state that is not surely in a predetermined connected state when using it.

That is, in many cases, the conventional connector of this type is configured to judge whether or not the predetermined connection state is established by the impact sound at the time of the connection, and therefore the impact sound is generated. If there is no recognition of listening, its use may be continued in an incompletely connected state.

[0006] Next, regarding the durability, it is only intended to improve the durability of each constituent member itself that constitutes the connecting tool, and therefore, for example, a metal is often used for forming the constituent member. As a result, there is the inconvenience of causing unnecessary weight increase.

Further, in many cases, the structure is complicated in order to ensure safety, and as a result, the number of components is increased, and accordingly, the number of assembling steps is increased and the product cost is reduced. There is an inconvenience.

The present invention was devised in view of the above-mentioned circumstances, and an object thereof is to easily secure predetermined safety and durability and to reduce the product cost. It is an object of the present invention to provide a connector which is easy to use and can be expected to be improved in its versatility, and which is optimal for use when connecting a belt strap such as a chin strap belt in a helmet or a seat belt in a vehicle.

[0009]

In order to achieve the above-mentioned object, the basic structure of the present invention is provided with a receiving body having a space inside the distal end side which communicates with the insertion port of the distal end, and the above-mentioned insertion member. An inserting piece having a tip side that is present in the space through the insertion opening, and the inserting piece and the receiving side body are connected by an inserting operation of the inserting piece to the receiving side body. In a connecting tool formed so that the inserting piece and the receiving side body are separated by a manual operation with respect to the side body, the receiving side body has a fixed side member having a belt connecting portion for connecting the belt-like belt to the base end portion. , A movable side member that is movably interposed on the tip side of the fixed side member in the extending direction of the belt-like belt, and fixed between the movable side member and the tip side of the fixed side member to fix the movable side member A spring that urges in the forward direction toward the tip of the side member,
The insertion side and the space are formed by the tip side of the fixed side member and the movable side member, and the movable side member manually inserts the insertion piece into the receiving side body and the movable side member. It is formed so as to move in the backward direction toward the base end of the fixed side member against the biasing force of the spring while being inserted into the fixed side member at the time of operation, and the insertion piece is a belt-shaped belt at the base end part. A belt connecting portion that connects the front end side, a locking hole formed in the central portion on the front end side, and flanges formed on both outer side portions on the front end side, and the front end surface of the insertion piece is a rounded surface. The end face of the flange insertion piece facing the base end side is formed into a rounded surface, and the fixed side member is fixedly mounted at the central portion on the tip end side and protrudes into the space. Movable side part that has a locking protrusion that is present in the stop hole A contact portion disposed in the space for abutting the tip rounded surface of the insertion piece, a retracting portion disposed in the space for allowing the tip portion of the insertion piece and the flange to exist, and A guide protrusion that is disposed in the space and is adjacent to the rounded surface of the flange that is present in the retreat portion, and the contact portion has a tapered surface that makes sliding contact with the rounded surface of the tip of the insertion piece. In addition, the guide projection has a taper surface which is in substantially the same direction as the guide projection in opposition to the taper surface of the abutting portion and which is in sliding contact with the rounded surface of the flange.

Further, preferably, when the tip end side of the insertion piece inserted into the tip end side of the receiving side body is in a floating state with its base end side as the center of rotation, the engagement existing in the engagement hole. It is assumed that the protrusion tends to be prevented from departing from the locking hole.

[0011]

Therefore, when the tip end side of the inserting piece is inserted into the space inside the tip end side of the receiving side body, the tip end of the inserting piece comes into contact with the contact portion of the movable side member constituting the receiving side body. Then, when the insertion piece is further inserted under the corresponding contact state, the movable side member is retracted against the biasing force of the spring under the state where the movable side member is interposed by the fixed side member constituting the receiving side body.

When the movable member is retracted by a predetermined stroke amount, the tip end side of the insertion piece comes into a state where the tip rounded surface of the insertion piece slides on the tapered surface of the contact portion and floats up. As a result of the ascending, the tip end portion of the insertion piece is present in the retracting portion formed on the movable member.

When the tip of the insert piece is exposed to the retracted portion, the flange formed on the insert piece is also exposed to the retracted portion, and at this time, the fixed locking projection is attached to the fixed member. Is present in the formed locking hole.

When the tip of the insertion piece is present in the retracted portion, the contact of the tip of the insertion piece with the abutting portion is released, so that the movable member having the corresponding contact portion is the spring. It moves in the forward direction, which is the return direction, with the urging force.

As a result, the retracting portion, in which the distal end portion of the insertion piece is present, is closed by the lower contact portion,
The deviation of the tip of the insertion piece from the retracting portion is prevented,
Therefore, at this time, the disengagement of the locking hole and the locking projection is prevented, and the connection between the receiving body and the insertion piece is realized.

In the connected state, that is, when the tip end side of the insertion piece is inserted inside the tip end side of the receiving body, the insertion piece has its base end side as the center of rotation and its tip end side. When it is brought into a floating state, the engagement state between the engagement protrusion existing in the engagement hole and the engagement hole tends to be more difficult to be released.

On the other hand, when the movable side member constituting the receiving side body is forcibly moved in the backward direction by manual operation when the receiving side body and the insertion piece are connected, the movable side member is fixed. It retracts against the biasing force of the spring while being inserted into the side member.

At this time, with a slight movement of the movable member, the tapered surface of the guide projection formed on the movable member is brought into contact with the rounded surface of the flange of the insert piece.

With the further movement of the movable side member following the above, when the guide projection pushes down the flange downward, and the movable side member retreats to a predetermined stroke amount,
The guide projection pushes the flange downwards greatly.

At this time, since the abutting portion of the movable member is also retracted, the locking hole and the locking projection are projected in such a manner that the locking projection existing in the locking hole is released from the locking hole. When the engagement with and is released, the tip of the insertion piece existing in the retreat portion is moved out of the retreat portion by the movement of the lower contact portion.

At this time, since the movable member is urged by the spring to move in the forward direction,
The tip rounded surface of the insertion piece slides on the tapered surface of the contact portion and can be pushed down.

The inserting piece 2 with its tip abutted against the abutting portion is moved forward by the movable member or an external force is applied to the inserting piece to pull it out from the receiving body. By doing so, it becomes possible to extract from the receiving side body, that is, to separate the insertion piece and the receiving side body.

The front end sides of the belt-shaped belts from both directions are connected to the respective belt connecting portions of the base end portion of the fixed side member and the base end portion of the insertion piece that form the receiving side body.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 and 2, a connector according to an embodiment of the present invention comprises a receiving body 1 and an inserting piece 2 as shown in FIGS. In other words, the insertion piece 2 is connected to the receiving side body 1 by the inserting operation, and the receiving side body 1 is separated by the manual operation.

It is to be noted that the receiving body 1 and the insertion piece 2 have the structure shown in FIG.
As shown in the phantom diagram inside, belt belt B from both directions
Are connected.

The receiving body 1 is formed so as to have a space 1a (see FIG. 2) inside the so-called main body portion on the tip side which is the right side in FIGS. 1 and 2, and the space 1a is the tip. It is set so as to communicate with the insertion port 1b formed in (see FIG. 2).

Basically, the receiving side body 1 is shown in FIGS.
As shown in FIG. 5, the fixed side member 3, the movable side member 4, and the spring 5 (see FIG. 3) are assumed to be included. Therefore, the plurality of so-called parts are assembled while the spring 5 is so-called built-in, and are integrated by an appropriate means such as the use of an adhesive.

Further, in the receiving body 1, the fixed side member 3 and the movable side member 4 form the space 1a and the insertion port 1b.

To explain a little, the fixed member 3 has a belt connecting portion 31 for connecting the belt-like belt B to the base end portion which is the left end portion in FIGS. 3 and 4, and in FIG. 3 and FIG. Is formed so as to form the so-called main body portion on the front end side of the receiving side body 1 together with the movable side member 4 on the right side front end side.

The belt connecting portion 31 has a hole 31a through which the belt belt B is inserted.

The fixed-side member 3 has a locking projection 32 (see FIG. 3) which is fixed to the central portion on the tip end side thereof and is projected into the space 1a.

The locking projections 32 are the insertion pieces 2 described later.
A so-called stopper portion is formed between and, and in this embodiment, it is set to a so-called flat-arranged triangular pyramid shape, and a so-called mountain portion is projected into the space 1a, The so-called bottom portion is set to face the base end side of the fixed-side member 3.

By the way, the fixed side member 3 is set so as to incline the bottom portion 33 on the tip end side thereof at a gentler angle than the base end side thereof. It is set so as to substantially match the inclination of the so-called mountain portion (see FIG. 3).

Further, in the fixed side member 3, it is assumed that there is a gap S between the bottom portion 33 and the locking projection 32 that is slightly larger than the so-called wall thickness dimension of the insertion piece 2, and the insertion piece 2 It is set so as to enable so-called removal and insertion (see FIG. 12).

The movable side member 4 is provided on the tip side of the fixed side member 3 so as to be movable in the extending direction of the belt-shaped belt B, and the inserting operation of the inserting piece 2 into the receiving side body 1 is performed. At the time of operation and during the manual operation of the receiving body 1, the fixed side member 3 is in the retracted direction against the urging force of the spring 5 while being inserted in the fixed side member 3, that is, the fixed side that is the left side in FIGS. 3 and 4. Member 3
It is set to move (backward) in the direction toward the base end of.

Therefore, the movable-side member 4 has the space 1
It has an abutting portion 41 (see FIGS. 3 and 1), a retracting portion 42 (see FIG. 3), and a guide protrusion 43 (see FIGS. 4 and 1), which are arranged in a.

The abutting portion 41 is for abutting the tip of the inserting piece 2 inserted into the space 1a (see FIG. 5), and is abutting surface 42a for abutting the tip of the inserting piece 2.
(Refer to FIG. 3).
Taper surface 42 formed so as to lack the side corner
b (see FIG. 3) is also included.

When the abutting portion 41 is retracted by the movement of the movable side member 4 when the insertion piece 2 is pushed further into the space 1a, the tapered surface 42b is moved toward the tip side of the insertion piece 2. It functions so as to guide the evacuation unit 42 side.

The retracting portion 42 is set so that the so-called tip portion of the inserting piece 2 is present so as to maintain the connection state between the receiving body 1 and the inserting piece 2, and the space 1a is formed. It is set in a so-called space part that communicates with.

The guide projections 43 allow the insertion piece 2 to be separated from the receiving body 1, that is, the retracting portion 4 described above.
It is provided mainly for the purpose of letting out the so-called tip portion of the insertion piece 2 existing in 2 from the retracting portion 42.

However, the guide projections 43 are also designed so as not to obstruct the insertion of the insertion piece 2 into the space 1a and the extraction of the insertion piece 2 from the space 1a.

That is, as shown in FIG. 4, the guide protrusion 43 has a tapered surface 43 a which is required when the so-called tip portion of the insertion piece 2 existing in the retreat portion 42 is to be removed from the retreat portion 42. And a guide surface 43b for facilitating the insertion / removal of the insertion piece 2 into / from the space 1a.

The tapered surface 43a is set so as to be substantially in the same direction as the tapered surface 41b of the contact portion 41, and the guide surface 43b coincides with the inclination of the bottom portion 33 of the fixed side member 3. Is set to.

A gap S between the guide surface 43b and the bottom portion 33, which is slightly larger than the so-called wall thickness dimension of the insertion piece 2, is formed in the same manner as between the locking projection 32 and the bottom portion 33. Is being formed.

Needless to say, the spring 5 is arranged between the movable side member 4 and the tip side of the fixed side member 3 to move the movable side member 4 in the forward direction, that is, in the right direction in FIG. It is set so as to bias in the direction toward the tip of the fixed-side member 3.

In the illustrated example, the spring 5 coincides with the moving direction of the movable-side member 4, that is, the extending direction of the belt-shaped belt B, at the central portion of the movable-side member 4, as shown in FIG. One end side is housed in the concave portion 4a (see FIG. 1) formed so as to be locked, and the other end side forms a locking protrusion 32 in the fixed side member. For this reason, it is said that it is housed and locked in the recess 32a that appears on the so-called back side.

On the other hand, the insertion piece 2 has the tip end, which is the left side in FIGS. 1 and 2, at the insertion opening 1 of the receiving body 1.
It is formed so that it can be made to exist in the space 1a in the receiving body 1 via the b.

That is, the insertion piece 2 has a belt connecting portion 21 (see FIG. 1) for connecting the belt-like belt B to the base end portion which is the right end portion in FIGS. 1 and 2. It has a locking hole 22 formed in the central portion on the tip side and a pair of flanges 23 formed on both outer portions on the tip side.

The insertion piece 2 has a rounded surface 2a (see FIG. 2) at the tip end surface thereof and the flange 23
The rear end face, that is, the end face facing the base end side of the insertion piece 2 is a rounded surface 23a.

The locking hole 22 is formed by the fixed member 3 described above.
Needless to say, it is sufficient if the engaging projection 32 is formed to have a size allowing the presence of the engaging projection 32, but unless the durability of the inserting piece 2 is reduced, it contributes to the reduction of the weight of the inserting piece 2. As described above, it is preferable to be formed large.

Further, in the illustrated example, it is assumed that the upper surface on the tip side of the flange 23 is cut off in a tapered surface shape. However, when the insertion piece 2 is formed to be slightly thin as a whole, the tapered surface is formed. The connecting member according to this embodiment formed as described above does not need to be omitted.
The connected state and the separated state are set as follows.

First, when the insertion piece 2 is connected to the receiving body 1, as shown in FIG. 5, the tip side of the insertion piece 2 is inserted into the space 1a of the receiving body 1.

At this time, the tip of the insertion piece 2 is the receiving body 1.
When the abutting surface 41a of the abutting portion 41 of the movable side member 4 constituting the above is abutted, and the insertion piece 2 is further inserted under the corresponding contact state, the movable side member 4 constitutes a receiving body. Under the state of being interposed in the fixed side member 3, it retreats against the biasing force of the spring 5 (see FIG. 3).

When the movable member 4 retracts to a predetermined stroke amount, as shown in FIG.
The tip rounded surface 2a of the insertion piece 2 slides on the tapered surface 41b of the contact portion 41 and floats up (moves in the direction shown by the arrow in FIG. 6), and as a result of this floating up, As shown in FIG. 7, the tip end portion of the insertion piece 2 is exposed to the retreat portion 42 formed on the movable member 4.

When the tip of the insert piece 2 is exposed to the retracting portion 42, the flange 23 formed on the insert piece 2 is also exposed to the retracting portion 42. At this time, as shown in FIG. The locking projection 32 fixed to the fixed member 3
Will be present in the locking hole 22 formed in the insertion piece 2.

Further, the tip end of the insertion piece 2 has a retracting portion 42.
Of the insertion piece 2 is released from contact with the contact portion 41, and therefore the movable member 4 having the contact portion 41 is moved forward by the biasing force of the spring 5 in the forward direction. Moving.

As a result, the retracting part 42, in which the tip of the inserting piece 2 is present, is closed by the lower contact part 41, and the tip of the inserting piece 2 from the retracting part 42 is closed. The deviation is prevented, and therefore, at this time, the deviation of the locking projection 32 from the inside of the locking hole 22 is prevented, and the connection between the receiving body 1 and the insertion piece 2 is realized.

Further, in the above-mentioned connected state, that is, in the state in which the tip end side of the insertion piece 2 is inserted inside the tip end side of the receiving body 1, the insertion piece 2 has its base end side as the center of rotation. When the tip end side is lifted up, the locking projection 32 existing in the locking hole 22 tends to be prevented from deviating from the locking hole 22.

That is, considering the normal usage of the belt-shaped belt B, the base end of the receiving body 1 and the base end of the insertion piece 2 are in the so-called downward direction as shown by the left and right arrows in FIG. The situation is being pulled.

Therefore, in the connector according to this embodiment, the insertion piece 2 inserted into the receiving body 1 has its base end side as the center of rotation and its tip end side in the space 1a. Therefore, it becomes a state of being lifted up, and therefore, the locking projections 32 are always arranged in the locking holes 22.

As a result, the base end of the receiving body 1 and the insertion piece 2
As the proximal ends of the locking projections 32 are pulled downward as shown by the left and right arrows in FIG. 8, the locking projection 32 is prevented from deviating from the locking hole, and the coupling tool The connected state during use will be permanently guaranteed.

Therefore, although not shown, for example, when the connecting tool is used as a buckle for a seat belt in a vehicle, the inserting piece inserted in the receiving body 1 must be used during the use. The tip end side of 2 becomes a state of being lifted up in the space 1a with its base end side as the center of rotation, and as a result, the coupling tool is in the separated state unless the external force acts unnecessarily, that is, the coupling. It cannot be released.

Further, in the connector according to this embodiment, unless the inserting piece 2 inserted in the receiving body 1 is fixed at a predetermined position, that is, the engaging piece formed on the inserting piece 2 is locked. Locking projection 3 fixed to fixed member 3 of receiving body 1 in hole 22
Unless 2 is distributed, the insertion piece 2 cannot be connected to the receiving body 1, and the locking projection 32 is not formed by being biased by the biasing member to project or retract.
In a so-called incompletely connected state in which the locking projections 32 are not arranged in the locking holes 22, the insertion piece 2 easily comes out of the receiving body 1, and the incompletely connected state remains. The use of the connector is not continued.

Next, when the insertion piece 2 is separated from the receiving side body 1, as shown in FIG. 9, the movable side member 4 is manually retracted to the fixed side member 3 in the backward direction. Spring 5
(See Fig. 8) Forced movement against the biasing force.

At this time, even if the movable side member 4 slightly moves,
The tapered surface 43 of the guide projection 43 formed on the movable member 4
a is a rounded surface 23 on the flange 23 of the insert piece 2
It comes into contact with a.

With the further movement of the movable member 4 following the above, as shown in FIG. 10, when the guide protrusion 43 pushes the flange 23 downward, the movable member 4 is retracted to a predetermined stroke amount. As shown in FIG. 11, the guide protrusion 43 pushes the flange 23 downward.

At this time, the contact portion 4 of the movable member 4
Since 1 is also retracted, as shown in FIG. 12, the locking projection 32 of the fixed-side member 3 existing in the locking hole 22 of the insertion piece 2 is released from the locking hole 22. At the same time, the tip of the insertion piece 2 existing in the retreat portion 42 is escaped from the retreat portion 42 by the movement of the lower contact portion 41.

At this time, since the movable member 4 is urged by the spring 5 so as to move in the forward direction, the tip rounded surface 2a of the insertion piece 2 moves toward the tapered surface 41b of the contact portion 41. It will slide and be pushed down.

Then, the insertion piece 2 in a state in which the tip is in contact with the contact portion 41 is arranged so that the movable side member 4 is advanced or the insertion piece 2 is pulled out from the receiving body 1. Since the external force acts, it is extracted from the receiving body 1, that is, the insertion piece 2 and the receiving body 1 can be separated.

Therefore, when the connecting tool is used as a buckle of a chin belt in a helmet H, for example, as shown in FIG.
By setting the insertion piece 2 into the use state in which the insertion piece 2 is inserted from below, the insertion piece 2 is removed from the reception side body 1 only when the movable side member 4 of the reception side body 1 is lifted up. It will be issued.

That is, even if there is an external force acting on the movable member 4 from the upper helmet H side in the direction of pushing the movable member 4 downward, the insertion piece 2 is removed from the receiving body 1 by the external force action from above. It will not be extracted.

As a result, assuming, for example, that a driver operating a motorcycle using the helmet H is thrown to the ground in a fall accident, the helmet H is normally used.
The head of the driver who wears the helmet is in a situation where the top of the helmet H slides in the traveling direction.

Therefore, in this situation, even if an external force is applied to the movable member 4 from the helmet H side, the connected state of the connecting tool is not released, and the helmet H is detached from the head of the fallen driver. There is no risk of

When the connecting tool is used as a buckle for the chin strap of the helmet H, the inserting piece 2 is inserted in the receiving body 1 in an incomplete state as described above. In this state, the weight of the belt-shaped belt B acts on the insertion piece 2, so that the insertion piece 2 will fall out from the inside of the receiving body 1. It will be easy to recognize.

As described above, the constituent material of the connecting tool is basically free, and when the connecting tool is used as a buckle for the chin strap of the helmet H, its weight is reduced. For this purpose, it may be entirely formed of a synthetic resin material, but it is preferably formed wholly or partially of a metal material to ensure its durability.

Further, according to the structure of the present invention, the connector may be used as a buckle of a seat belt in a vehicle other than the above-mentioned applications, or as a so-called connector of belt-like belts B. Of course good things.

[0077]

As described above, according to the present invention, when the insertion piece is inserted into the space inside the receiving side body to bring it into the connected state, it is fixed to the fixed side member constituting the receiving side body. Unless the stop projection is placed in the locking hole formed in the insert piece, it will not be in a completely connected state, and the lock projection will not cause frictional resistance to the insert piece existing in the space inside the receiving side body. Since the insertion piece is easily removed from the receiving body, the use of the insertion piece cannot be continued in an incompletely connected state.

Further, according to the present invention, when the insertion piece is pulled out from the receiving side body, the movable side member constituting the receiving side body is moved in a predetermined direction by the action of an external force other than manual operation, that is, retracted. It will not be separated unless it is done.

Therefore, when the connecting tool is used as a buckle for a chin strap in a helmet, for example, it is set in a usable state in which the inserting piece is inserted from below into the receiving body arranged above. As a result, in the case of the incompletely connected state, the insertion piece will come out of the receiving body, and the use in the incompletely connected state cannot be continued.

When the connecting tool is used as a buckle for a chin strap of a helmet, the inserting piece is pulled out from the receiving body only when the movable side member of the receiving body is lifted up. Therefore, assuming, for example, that a driver operating a motorcycle using a helmet is thrown to the ground in a fall accident, the head of the helmet-ridden driver is usually Since the top of the vehicle slides in the direction of travel, even if an external force is applied to the movable side member from the helmet side, the connected state of the connecting tool will not be released, and the head of the driver who fell over. There is no risk of the helmet being detached from.

According to the present invention, in the case where the insertion piece inserted into the receiving side body makes the distal end side float up in the space inside the receiving side body with the base end side as the center of rotation. The locking projections tend to be arranged deeper in the locking holes formed in the insertion piece, and the connection state between the insertion piece and the receiving side body becomes more reliable.

Therefore, when the connecting device is used as a buckle for a seat belt in a vehicle, for example,
During its use, the tip side of the insertion piece inserted into the receiving body is always in a state of being lifted up in the space with its base side as the center of rotation, and as a result, unnecessary external force is exerted. Unless this is done, the connector will not be in a separated state, which will provide extremely high safety.

Further, according to the present invention, the locking projection and the guide projection of the movable side member of the fixed side member constituting the receiving side body are integrally fixed to the fixed side member or the movable side member, respectively. As compared with the case where the locking projections and the guide projections are formed as movable members as in the related art, it becomes easier to improve the strength and the number of parts can be easily reduced.

Furthermore, according to the present invention, when the receiving side body and the insertion piece are made of a synthetic resin material, the overall weight can be reduced, and the receiving side body and the insertion side piece can be reduced. When the pieces are selectively or entirely made of steel, the durability can be easily improved.

As a result, according to the present invention, the predetermined safety and durability can be easily ensured, the product cost can be easily reduced, and the versatility thereof can be expected to be improved. There is an advantage that it is most suitable for use when connecting a belt-like belt such as a chin belt or a seat belt in a vehicle.

[Brief description of drawings]

FIG. 1 is a plan view showing a connection tool according to an embodiment of the present invention in a separated state.

FIG. 2 is a front view of the same.

FIG. 3 is a vertical cross-sectional view of the receiving body along the line X1-X1 in FIG.

FIG. 4 is a vertical cross-sectional view of the receiving body along the line X2-X2 in FIG.

FIG. 5 is a vertical cross-sectional view showing a state in which the insertion piece is shallowly inserted in the receiving body.

FIG. 6 is a longitudinal sectional view showing a state in which the insertion piece is deeply inserted into the receiving side body.

FIG. 7 is a vertical cross-sectional view showing a state in which the receiving body and the insertion piece are connected to each other.

FIG. 8 is a vertical sectional view showing a connected state of the same.

FIG. 9 is a vertical cross-sectional view showing a state in which a movable side member of the receiving side body is retracted with a small stroke.

FIG. 10 is a vertical cross-sectional view showing a state in which a movable side member of the receiving side body is retracted with a large stroke.

FIG. 11 is a vertical cross-sectional view showing a state in which the receiving body and the insertion piece can be separated.

FIG. 12 is a vertical cross-sectional view showing a state where the same is separable.

FIG. 13 is a perspective view showing a state in which the connector is used as a buckle for a chin strap of a helmet.

[Explanation of symbols]

 1 Receiving side body 1a Space 1b Insertion port 2 Insertion piece 2a R-face 3 Fixed-side member 4 Movable-side member 5 Spring 21 Belt connecting part 22 Locking hole 23 Flange 23a Rear surface 31 Belt connecting part 32 Locking protrusion 41 This Contact part 41b Tapered surface 42 Retreat part 43 Guide protrusion 43a Tapered surface B Belt

Claims (2)

[Claims] 1. A receiving body having a space communicating with the insertion opening of the distal end inside the distal end side, and an insertion piece having the distal end side present in the space through the insertion opening. It is formed so that the inserting piece and the receiving body are connected by the inserting operation of the inserting piece to the receiving body, and the inserting piece and the receiving body are separated by manual operation on the receiving body. In the connector, the receiving side body has a fixed side member having a belt connecting portion for connecting the belt-shaped belt to a base end portion thereof, and a tip end side of the fixed side member movably in the extending direction of the belt-shaped belt. A movable side member; and a spring which is arranged between the movable side member and the tip side of the fixed side member and biases the movable side member in the forward direction toward the tip of the fixed side member. The tip side and the movable side member form the insertion opening and the space, and , The base end of the fixed side member against the biasing force of the spring under the state of being inserted into the fixed side member when the movable side member inserts the inserting piece into the receiving side body and when the movable side member is manually operated. It is formed so as to move in the backward direction toward, and the insertion piece has a belt connecting portion for connecting the belt-like belt to the base end portion, a locking hole formed in the center portion on the tip side, and both of the tip side. A flange formed on the outer side, and the front end surface of the insertion piece is a rounded surface and the end surface of the flange facing the base end side of the insertion piece is a rounded surface. The side member is fixedly provided in the central portion on the tip end side thereof and has a locking projection protruding into the space and existing in the locking hole, and the movable side member is disposed in the space. The contact part that contacts the rounded surface of the tip of the insertion piece and the space inside the space. A saving unit for the congregation of the tip and the flange of the insert inclusive piece,
A guide protrusion that is arranged in the space and is adjacent to the rounded surface of the flange that is present in the retreat,
The abutting part has a taper surface for slidingly contacting the rounded surface of the tip of the insertion piece, and the guide projection is in substantially the same direction as the tapered surface of the abutting part so as to make sliding contact with the rounded surface of the flange. A connector having a face 2. The engagement protrusion engaging in the engagement hole when the tip end side of the insertion piece inserted into the tip end side of the receiving body floats up with its base end side as the center of rotation. 2. A connector according to claim 1, characterized in that the deviation from the inside of the stop hole tends to be prevented.