JP2003102516A - Link device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain proper strength for reduction in size and weight. SOLUTION: In the link device which has a plate piece-like insertable body 2 to be inserted engagedly into the body 1 thereof for linking one end to the other end of a cord A or the like, an convex-concave part 19 is so arranged to be protruded and recessed across the thickness of the insertable body 2. The convex-concave part 19 keeps the insertable body 2 from bending against external forces applied across the thickness thereof under the linked state of the insertable part 2 engaged with the link device body 1. Thus, sufficient strength can be obtained across the thickness of the link device despite attempts to make it thinner for reduction in the size and weight of the link device as a whole. The convex-concave part 19 may be formed longitudinally in the direction of inserting the insertable body 2 thereby further increasing the strength in the direction of bending as caused by the external forces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting tool that can engage and disengage a chin strap such as a helmet.

[0002]

2. Description of the Related Art FIGS. 4 (a) and 4 (b) are plan views showing an example of a conventional connector, and FIG. 4 (c) is a side sectional view of the same connector. As shown in FIGS. 4A to 4C, the conventional connecting tool includes a connecting tool body 100 and an inserting / removing body 108.

The connecting device main body 100 is provided with a pair of engaging portions 103 supported between the upper and lower plates 101 so as to be swingable about each support shaft 102. Each engagement portion 103 has an operation protrusion 103 a protruding on each side of the upper and lower plates 101. Further, each engaging portion 103 has a hook-shaped engaging claw 104 at one swing end 103b.
The hook-shaped tips of No. 4 face each other. Further, each engaging portion 103 is always biased so as to be separated from each other, with a spring member 105 interposed at a facing portion on the side of the other swing end 103c. That is, the one swing end 103 b of the engaging portion 103 is engaged with the engaging claw 1 by the spring member 105.
04 will always be biased closer. Further, the other swing end 103c of each engaging portion 103 is regulated in a range separated by each regulating member 106 provided between the upper and lower plates 101. In addition, the engaging portion 10 in the upper and lower plates 101
An annular insertion portion 107 to which one of strings (not shown) and the like is attached is provided on the other swing end 103c side of 3.

The insertion / removal body 108 is formed into a plate piece, and has an engagement piece 109 which is inserted between the engagement claws 104 of the engagement portions 103 and engages with each other. Further, an annular insertion portion 110 to which the other such as a string (not shown) is attached is provided on the side of the insertion / removal body 108 opposite to the engagement claw piece 109.

As shown in FIG. 4 (a), the above-mentioned conventional connector has the engaging claw piece 109 of the insertion / removal body 108 and the connector body 10.
Between the upper and lower plates 101 of 0, the engaging claws 10 of the respective engaging portions 103
By being inserted between four, the engaging claw pieces 109 are engaged with the engaging claws 104 that are close to each other by the spring member 105.
As a result, the insertion / removal body 108 is connected to the connector main body 100, and the one and the other strings attached to the insertion portions 107 and 110 are connected to each other.

Further, as shown in FIG. 4B, by pushing each operation projection 103a inward, each engagement portion 103
The engaging claws 104 are separated from each other against the biasing force of the spring member 105. As a result, the engagement between the engagement claw 104 and the engagement claw piece 109 is released, and the insertion / removal body 108 becomes free with respect to the connector main body 100. Then, with the operation protrusions 103a being pressed inward, the connecting body 100 is removed from the insertion / removal body 10.
By pulling out 8 the one and the other strings are separated.

[0007]

However, in the above-mentioned conventional connecting tool, the upper and lower plates 101 and the inserting / removing body 108 are provided.
The strength is obtained by increasing the thickness of. This increases the size of the entire connecting device and increases the weight. Contrary to this, when it is desired to reduce the size and weight, the upper and lower plates 101
Also, the thickness of the insert / removal body 108 becomes thin and strength cannot be obtained. In particular, when the above-mentioned connecting tool is adopted for connecting the chin strap of the helmet, when the helmet is about to be detached from the head, one and the other strings are pulled around the connecting tool as a fulcrum. At this time, the insertion / removal body 108 is bent in the thickness direction.

Therefore, in order to solve the above-mentioned problems, it is an object of the present invention to provide a connector which can obtain a predetermined strength in terms of size reduction and weight reduction.

[0009]

In order to achieve the above object, a connector according to claim 1 according to the present invention comprises a connector body,
A connector having a plate piece-shaped insertable member that is insertably engageable with the connector main body, wherein a concavo-convex portion that is uneven in the thickness direction of the insertable member is provided. .

According to a second aspect of the present invention, there is provided the connector according to the first aspect, wherein the uneven portion is formed in a longitudinal shape in an insertion direction of the insertion / removal body.

According to a third aspect of the present invention, in the connecting tool according to the first or second aspect, the insertion / removal body is provided with an insertion portion to which a string is attached, and the insertion portion. A locking member for arranging the string to adjust the length thereof is arranged, and an uneven portion that is uneven in the thickness direction of the locking member is provided.

According to a fourth aspect of the present invention, there is provided the connector according to any one of the first to third aspects, wherein the engaging claws facing each other in the accommodating portion are swingably supported so as to be separable from each other. A connector main body capable of being pushed from the outside of the accommodating portion so as to separate the engaging claws, and inserted into the accommodating portion,
The insertion / removal body having engagement claw pieces that engage between the engagement claws, and the second twisted portion in the middle of both arms extending through the first twisted portion. A spring that is provided in the accommodating portion of the connector body and that urges the engaging claws closer to each other by the wide-angle urging force of the both arm portions by the first twisting portion. A member and a support portion provided inside the housing portion of the connector main body for abuttingly supporting each tip of both arm portions of the spring member, and the both arm portions by the first twisting portion. When the engaging claw pieces are disengaged from the engaging claws separated by the pushing operation against the wide-angle biasing force, the second twisting is performed while the distal ends of the both arm parts are supported by the supporting part. It is characterized in that the engaging claw piece is pushed out of the accommodating portion by the first twisted portion that is moved by being wide-angled through the portion.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an example of a connector according to the present invention, and FIG. 2 is a perspective view showing a use state of the connector.

As shown in FIGS. 1 and 2, the connector is
It is made of light metal such as stainless alloy or aluminum alloy, or hard synthetic resin material.
It has and. The connector main body 1 forms a space that forms a housing 5 between the upper and lower plates 3 and 4. In the accommodation part 5,
A pair of engaging portions 7 supported so as to be swingable around each support shaft 6 is provided. In the present embodiment, each support shaft 6 is formed of a fixing member such as a rivet that integrates the upper and lower plates 3 and 4, and the engaging portion 7 of the engaging portion 7 is inserted between the fixing holes 3a and 4a of the upper and lower plates 3 and 4. It is loosely inserted in the shaft hole 7a. Each engaging portion 7 is a support shaft 6
A hook-shaped engaging claw 8 is provided on one swinging end 7b through. The engaging claws 8 have hook-shaped tips facing each other. Further, the other swing end 7 via the support shaft 6 of each engaging portion 7
An operation protrusion 9 protruding from the upper and lower plates 3 and 4 (accommodation portion 5) is provided on the side portion on the c side.

A spring member 10 is provided in the accommodating portion 5 and between the other swinging portions 7c of the engaging portions 7.
The spring member 10 is made of a composite of torsion coil springs,
It has both arm portions 10b extending through the first twisted portion 10a. A second twisted portion 10c is provided in the middle of both arms 10b. An annular portion 10d is formed at the tip of each of the arm portions 10b.

The spring member 10 causes the other swinging end 7c of each engaging portion 7 to move to the side between the engaging portions 7 by the wide-angle biasing force of the both arm portions 10b by the first twisting portion 10a. Then, the engaging claws 8 are pushed toward each other and urged so that the engaging claws 8 come close to each other. The upper and lower plates 3 and 4 are provided with a regulating member 11 that abuts on the other swing end 7c of the engaging portion 7 spread by the spring member 10 to regulate the swing range. Further, by pushing each operating projection 9 against the wide-angle biasing force of both arms 10b by the first twisting portion 10a, each engaging claw 8 is separated.

Further, on the upper and lower plates 3 and 4, on the other swing end 7c side of the engaging portion 7, an annular insertion portion 12 to which one of the strings A is attached is fixed as shown in FIG. ing. A part of the insertion portion 12 faces the accommodation portion 5, and the spring member 1
The front ends (annular portions 10d) of both arm portions 10b of 0 form a support portion 13 that abuts and supports. The support portion 13 has the engagement portion 7
It has a protrusion 13b at the center of a flat surface 13a facing toward.
Each tip of both arm portions 10b of the spring member 10 (annular portion 10d)
Are arranged so as to contact the flat surface 13a and sandwich the projection 13b. In addition, the insertion portion 12 is inserted into the fixing hole 12a of the insertion portion 12 while the fixing member 14 such as a rivet that integrates the upper and lower plates 3 and 4 is inserted into the fixing holes 3b and 4b of the upper and lower plates 3 and 4, respectively. And then fixed.

The insertion / removal body 2 is formed into a plate piece and has an engaging claw piece 16
have. The engaging claw pieces 16 have hook-like tips extending on both sides so that the engaging claw pieces 16 are inserted into the housing part 5 of the coupling tool body 1 and engage between the engaging claws 8 of the engaging parts 7. It has a substantially arrow shape. Further, as shown in FIG. 2, an annular insertion portion 17 to which the other end of the string A is attached is provided on the side of the insertion / removal body 2 which is opposite to the engagement claw piece 16. This insertion part 17
A locking member 18 is provided at the end of the string A so that the other end of the string A can be wound around to adjust the length.

Further, on both sides of the insertion portion 17, there are uneven portions 19
Is provided. The uneven portion 19 is formed in the thickness direction of the insertion / removal body 2 by pressing the plate-shaped thickness.
The concave-convex portion 19 is formed as a concave portion on the front side of the insertion / removal body 2 shown in FIG. 1, and is formed as a convex portion on the back side of the insertion / removal body 2. The irregularities may be upside down.

Further, the locking member 18 is formed by annularly forming a plate body having a predetermined thickness so that the insertion portion 17 can be passed through. The locking member 18 is provided with a retaining portion 18a formed by bending both ends of the plate body so as not to deviate from the insertion portion 17. Further, the locking member 18 has a structure shown in FIGS.
As shown in, the uneven portion 20 is provided. Uneven portion 2
0 is molded in the thickness direction of the locking member 18 by pressing the thickness of the plate forming the locking member 18. In addition,
The concavo-convex portion 20 is the locking member 18 shown in FIGS.
Is formed as a convex portion on the front side and is formed as a concave portion on the back side. The irregularities may be upside down.

The operation of the connector will be described. Figure 3 (a)
(B) is a top view which shows operation | movement of a coupling tool. This Figure 3
In (a) and (b), the upper plate 3 is removed.

First, the insertion / removal body 2 is inserted into the connector body 1. When the insertion / removal body 2 is inserted into the accommodation portion 5 of the connector main body 1, the engagement claw pieces 16 are inserted between the engagement claws 8 so as to push the engagement claws 8 apart, as shown in FIG. The engaging claw piece 16 and each engaging claw 8 are engaged with each other as shown in FIG. Each engaging claw 8
Is urged by the spring member 10 in the approaching direction, the engaging claw piece 16 does not come out of engagement with each engaging claw 8. As a result, one and the other of the string A shown in FIG. 2 are connected.

The spring member 10 includes the first twisted portion 1
Each engaging portion 7 is caused by the wide-angle biasing force of both arms 10b by 0a.
Spread the other end 7c of the side to the side. As a result, the support shaft 6
The engaging claws 8 are urged toward each other via. Further, in the spring member 10, the annular portion 10d at the tips of the both arm portions 10b is supported by the support portion 1 by the wide-angle biasing force of the second twisted portion 10c.
The projection 13b is sandwiched between the flat surface 13a and the flat surface 13a.

Next, the insertion / removal body 2 is removed from the connector body 1.
When the operation protrusion 9 of each engaging portion 7 is pushed inward, the engaging claws 8 are separated from each other against the biasing force of the spring member 10, and the engaging claws 8 and the engaging claw pieces 16 are engaged. Is solved. The spring member 10 is
As shown in FIG. 3B, when the operation projection 9 is pushed, it is crushed by the other end 7c side of each engaging portion 7 which swings in the approach direction. At this time, in the spring member 10, the first twisted portion 10a is brought into contact with the tip of the engaging claw piece 16, and the annular portion 10d at the tip of both arms 10b is supported by the support portion 1.
By sandwiching the protrusion 13b while abutting on the flat surface 13a of No. 3, the second twisted portion 10c has a wide angle, and the first twisted portion 10a is moved between the engaging claws 8. And
The moved first twisted portion 10a pushes the tip of the engaging claw piece 16 that is disengaged from each engaging claw 8. As a result, the engaging claw piece 16 is pushed out of the accommodating portion 5 and the insertion / removal body 2 is detached from the connector main body 1.

The above-described connecting device is provided with the composite spring member 10 having the first twisted portion 10a and the second twisted portion 10c between the upper and lower plates 3 and 4. This spring member 10
Is a torsion coil spring, so the connector body 1
Miniaturization (thin). It is possible to reduce the weight.

Further, it is assumed that an external force is applied to the connecting tool via the string A while the connecting tool body 1 and the insertion / removal body 2 are connected. In particular, when the above-mentioned connecting tool is adopted for connecting the chin strap of the helmet, when the helmet is about to come off the head, one and the other string A is pulled around the connecting tool as a fulcrum. At this time, since the insertion / removal body 2 is formed with the uneven portion 19 and the engaging member 18 is formed with the uneven portion 20, there is no bending in the thickness direction. As described above, the above-described connecting device is made smaller (thinner) and lighter in weight as described above, and the uneven portion 19 provides sufficient strength in the thickness direction.

Further, in the above-mentioned connecting tool, each operation projection 9
By pushing inwardly, the engagement between the engaging claws 8 on the coupling tool body 1 side and the engaging claw pieces 16 on the insertion / removal body 2 side is released. At the same time, the engaging member 1 is engaged by the spring member 10.
6 is pushed out from the connector main body 1 and the insertion / removal body 2 is detached from the connector main body 1. In this way, the above-described connecting device is reliably separated by one operation of the operation protrusion 9 without using both hands.

In the above-described embodiment, the insertion / removal body 2
The connector in which the insertion / removal body 2 is pushed out by the spring member 10 from the connector body 1 when the engagement is released has been described, but the invention is not limited to this. In this case, for example, in a commonly used connector having a plate piece insertion / removal body that is insertably engageable with the connector main body, a concavo-convex portion that is uneven in the thickness direction of the insertion / removal body is provided. Any configuration will do.

[0029]

As described above, in the connector according to the present invention, the concavo-convex portion is formed even when an external force in the thickness direction is applied to the insertion / removal body in the connected state where the insertion / removal body is engaged with the connection tool body. It doesn't bend because it exists. As a result, sufficient strength can be obtained in the thickness direction even if the connector is thin in order to reduce the size and weight of the entire connector. Further, if the uneven portion is formed in a longitudinal shape in the insertion direction of the insertion / removal body, the strength can be further increased in the bending direction due to the external force.

Further, the insertion / removal body is provided with an insertion portion to which the cords are attached, and the insertion member is provided with a locking member which allows the lengths of the cords to be hung and adjusted. By providing the uneven portion which is uneven in the thickness direction of the member, the strength of the insertable body can be further increased.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an example of a connector according to the present invention.

FIG. 2 is a perspective view showing a usage state of the connecting tool.

3A and 3B are plan views showing the operation of the connecting device.

4A and 4B are plan views showing an example of a conventional connecting tool. (C) A side sectional view of the conventional connecting tool.

[Explanation of Codes] 1 ... Connecting body, 2 ... Inserting / removing body, 5 ... Housing part, 8 ... Engaging claw, 10 ... Spring member, 10a ... First twisting part, 10b
... Arms, 10c ... Second twisted parts, 13 ... Support parts, 16
... engaging claw pieces, 17 ... insertion portion, 18 ... locking member, 19 ... uneven portion, 20 ... uneven portion.

Continued front page    (72) Inventor Shunsuke Okano             41, 5 Komagaya, Habikino, Osaka             Okano Works F-term (reference) 3B090 BD00 BD04                 3B107 DA19

Claims (4)

[Claims] 1. A connector having a connector main body and a plate-shaped inserter / ejector insertable into the connector main body so as to be engageable with the connector main body. A connecting tool characterized by being provided with. 2. The connector according to claim 1, wherein the uneven portion is formed in a longitudinal shape in the insertion direction of the insertion / removal body. 3. The insertion / removal body is provided with an insertion part to which a string is attached, and the insertion part is provided with a locking member that hangs the string and allows the length to be adjusted. The connector according to claim 1 or 2, further comprising an uneven portion that is uneven in the thickness direction of the locking member. 4. A coupling tool that swingably supports engagement claws facing each other inside the accommodation part so as to be able to come into contact with and separate from each other, and that can be pushed from outside the accommodation part so as to separate the engagement claws from each other. A main body, an insertion / removal body that is inserted into the accommodation portion and has engaging claw pieces that engage with each other between the engaging claws, and both arm portions that extend through the first twisting portion A second twisted portion is provided in a middle portion of the connection member, the second twisted portion is provided, and the second twisted portion is provided in the housing portion of the connector body, and the engagement is performed by the wide-angle biasing force of the both arm portions by the first twisted portion. A spring member that biases the claws toward each other, and a support portion that is provided in the housing portion of the connector main body and that abuts and supports the distal ends of both arm portions of the spring member. When the engaging claw pieces are disengaged from the engaging claws separated by the pushing operation against the wide-angle biasing force of the both arm parts by the one twisting part, The engaging claw pieces are moved to the outside of the accommodating section by the first twisting section that is moved by widening the angle of both arms while the tips are supported by the supporting section through the second twisting section. The connector according to any one of claims 1 to 3, wherein the connector is extruded to the outside.