JPH054223Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] A connector that is easy to assemble and has a locking mechanism that prevents it from coming off, especially when attaching a locking member to a connector, especially when attaching a locking member to an interface connector (for input/output external connection). The purpose of the connector is to provide a connector that can easily attach a locking member with a pre-formed retaining part without using any tools, and the locking member has a wire with a diameter wider than the diameter of the round wire at its two ends. The retaining part is formed by crushing a round wire, and the case member has a keyhole-shaped lock installation hole consisting of a circular opening part and a rectangular opening part, and the locking part has a lock mounting hole in the shape of a keyhole, and the two tips of the locking member A receiving portion is formed by two cut-out strainer portions facing each other with an interval narrower than the gap, and the lock mounting holes of the two cut-out strainer portions are arranged such that the direction of the long axis of the rectangular opening portion is The configurations are such that they are formed differently from each other.

[Industrial application field]

The present invention relates to an interface connector (for input/output external connection), and more particularly to a connector having a locking mechanism that is easy to assemble and difficult to remove, in which means for attaching a locking member to the connector.

As an interface connector, it is equipped with a spring lock (wire lock) that has a simple structure and operation and has a stable removal prevention function to prevent the cable from coming off or loosening due to frequent insertion/removal operations or external force applied to the cable. is widely used.

The present invention provides a locking mechanism that can be easily installed with one touch without the need for special tools when assembling the wire lock into a connector body, and that is difficult to dislodge due to unexpected external force after being assembled.

[Conventional technology]

FIG. 2 is a diagram showing a conventional interface connector.

In the figure, 1' is a connector to be mounted on the device, and 2' is a mating connector connected to a cable and inserted into the device-side connector 1'.

Reference numeral 11 denotes an insulator, on which a mounting portion 11b to the device and the like are formed, and a plurality of contacts 11a are provided.

A case member 13 is formed by drawing a metal plate, and is placed over the front surface of the insulator 11 and integrated by caulking or the like to form a connector body.

On both sides of the case member 13, there are a pair of cut-out portions 13a and 13b having lock mounting holes 13c.
are provided facing each other, and the round wire of the spring material is approximately Ω.
It rotatably supports a lock member 14 formed in the shape of a letter.

After the mating connector 2' is inserted,
When the locking member 14 is rotated in the direction of the arrow in the figure, the locking member 14 is rotated as shown by the dotted line 14' in the figure.
The constriction of the mating connector 2' engages with the lock engaging part 21 of the mating connector, and the mating connector 2' is fastened to prevent it from coming off from the device side connector 1'.

[Problem that the invention attempts to solve]

By the way, the lock part 14 is made of a round wire (wire) made of spring material and is easily deformed elastically. Therefore, especially in the unfastened state shown in the figure in which the lock part 14 protrudes from both sides of the connector body, it may fall off from the connector body due to an unexpected external force. It was hot.

Therefore, after inserting the tip of the lock member 14 into the lock mounting hole 13c of the cut-out portions 13a and 13b, it is crushed to form a retaining portion 14a wider than the diameter of the lock mounting hole 13c as shown in the figure. I started to do that.

However, since the round wire that is crushed is a material with excellent spring characteristics (that is, has a high spring limit value), a large force is required to plastically deform it by crushing, and furthermore, after it is inserted into the connector body, Since a retaining portion is formed, it has been difficult to prepare a crushing tool that can be processed efficiently in a limited space. Therefore, there are problems in that it is not possible to form a sufficient retaining portion or that it takes a lot of man-hours.

Additionally, it is difficult to prepare the connector body and the locking member separately and for the customer to easily attach the locking member if necessary, so it is necessary to prepare two types of connectors: one with a lock and one without a lock. It was not possible to standardize parts.

Furthermore, if the locking member is damaged and needs to be replaced at a site where the device is used, the entire connector must be replaced, which is uneconomical.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector in which a locking member having a pre-formed retaining portion can be easily attached without using any tools.

[Means for solving problems]

The above-mentioned conventional problems are as follows: The lock member has a retaining part wider than the diameter of the round wire formed at its two ends by crushing the round wire, and the case member has a circular opening part. a receiving part that has a keyhole-shaped lock mounting hole with a rectangular opening in contact with the circumference of the lock member, and is made up of two cut-out parts facing each other at a distance narrower than the distance between the two tips of the lock member; According to the connector of the present invention, the lock mounting holes of the two cut-out strainer portions are formed such that the long axes of the rectangular opening portions have different directions from each other. resolved.

[Effect]

The retaining part at the tip of the locking member is formed as a single item before it is assembled into the connector, so there is no restriction on machining space, and special tools and machine tools can be used.
It can be formed with high efficiency and precision.

When assembling the lock member into the connector body, squeeze the ends of both retaining parts so as to sandwich the tweezers, align them with the lock mounting holes on the inside of the two opposing cutout parts, and then do the same as when tightening the lock. Just rotate it.

In other words, the lock member rotates while pressing the inner surface of both cut-out strainers with its tip, and during rotation, the crushing surface only rotates at an angle that coincides with the long axis direction of the rectangular hole opening of the lock mounting hole. The retainer is inserted into the lock mounting hole. At this time, since the long axes of the rectangular openings of the two opposing lock mounting holes have different orientations, the lock members are inserted one side at a time and attached to the connector body at a rotation angle that matches each orientation. .

After installation, the lock member is constantly pressing against the inner surface of the facing cut-out strainer, so during normal rotation operation (lock fastening operation), it passes through the rotation position where the crushing surface and the long axis of the lock installation hole coincide. However, it won't come off. At other rotational positions, the retaining portion functions in the same manner as in the conventional example, and performs a retaining action.

〔Example〕

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

FIG. 1 is an exploded view of the locking portion of the connector according to the present invention, and the parts not shown are the same as the conventional connector shown in FIG.

In the figure, reference numeral 1 denotes a connector main body, which is made up of an insulator 11 on which a plurality of contacts (not shown) are arranged, and a case member 13 made of a metal plate material.

On both sides of the case member 13, a lock receiving part 13e is formed, which has cut-out parts 13a and 13b that are bent at right angles and stand up from the upper surface of the case (only one is shown in the figure). Both cut-out strainer parts 13a and 13b face each other with a distance b apart,
Lock mounting hole 1 in the shape of a so-called keyhole, with a circular opening connected to a rectangular opening in the center.
3c and 13d are provided.

Reference numeral 14 denotes a locking member, which is shown before being attached to the connector main body 1, and is made of a round spring wire formed into a substantially Ω-shape. The two ends of the lower side of the Ω-shape bent in opposite directions are separated by a distance a that is larger than the facing interval b of the two cutout portions on the case member 13, and are crushed. Flat plate-shaped retaining parts 14a and 14b, which are wider than the diameter of the round wire part, are formed in the same plane.

Regarding the dimensions of the lock mounting holes 13c and 13d, the diameter of the circular opening portion is larger than the diameter of the round wire of the lock member, and the retaining portions 14a and 14 are larger than the diameter of the round wire of the lock member.
The width of the rectangular opening is smaller than the collapsed width of b.
Slightly larger than the flattened thickness of the retaining parts 14a, 14b of the lock member, the maximum diameter of the circular opening plus the length of the rectangular opening is the same as that of the retaining parts 14a, 14.
They are each formed to be slightly larger than the collapsed width of b. Further, the orientation of the rectangular opening is different between the two lock mounting holes 13c and 13d, for example, one
C is formed to be in the 10 o'clock direction, and the other 13d is in the 2 o'clock direction.

Next, in order to attach the locking member 14 having the above structure to the lock receiving part 13e of the connector main body, the tips of both retaining parts are squeezed together so as to sandwich the tweezers, and then All you have to do is align it with the lock mounting holes 13c and 13d and then rotate it in the direction of the arrow in the figure. That is, by rotation in the A direction, one of the retaining portions 14a is inserted at an angle where its crushing surface and the long axis of the lock mounting hole 13c coincide, with the crushing width passing through the maximum diameter and expanding outward, Also, by rotating in direction B, the other retaining part 1
4b is similarly inserted into the lock mounting hole 13d.

In addition, in this embodiment, a case has been described in which the crushing surfaces for preventing the lock member from coming out are the same plane, and the direction of the long axis of the lock mounting hole on the receiving side is different, but conversely, the crushing surfaces are formed by twisting each other, A similar effect can be obtained even if the lock mounting holes are formed in the same direction.

[Effect of idea]

As described above, according to the present invention, it is possible to provide a connector in which a locking member, in which a locking portion is formed in advance, can be attached to the connector main body with a simple operation, thereby reducing the number of man-hours for assembling the connector. The economic effects of speeding up repairs and standardizing parts are significant.

[Brief explanation of drawings]

FIG. 1 is an exploded view of a locking portion of a connector according to the present invention, and FIG. 2 is a diagram showing a conventional interface connector. In the figure, 1...connector body, 1', 2'...
... Connector, 11 ... Insulator, 11a ... Contact, 13 ... Case member, 13a, 13b ...
Cut-out part, 13c, 13d...Lock mounting hole,
13e...Lock receiving part, 14...Lock member,
14a, 14b...removal preventing portion, 21...lock engaging portion.

Claims (1)

[Scope of Claim for Utility Model Registration] A connector in which a lock member 14 made of a round wire made of a spring material and formed into a substantially Ω-shape is rotatably attached to a case member 13 of a connector body 1, The member 14 has retaining parts 14a and 14b wider than the diameter of the round wire at its two tips.
is formed by crushing a round wire, and the case member 13 has a keyhole-shaped lock mounting hole 13 consisting of a circular opening portion and a rectangular opening portion.
A lock receiving portion 13e is formed of two cut-out portions 13a and 13b which are opposite to each other with a spacing narrower than the spacing between the two tips of the locking member 14, The connector is characterized in that the lock mounting holes 13c and 13d on the two cut-out portions 13a and 13b are formed such that the long axes of the rectangular openings have different orientations.