JPH0510499Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Technical field of the invention) This invention relates to a connector used to connect conduit conduits through which electric wires are inserted, for example, when wiring indoors in a building. In particular, the present invention relates to a connector locking device that can strongly lock a connector and a conduit.

(Prior Art) When wiring indoors in a building, electric wires are inserted into conduits. In this case, a connector is required to change direction or extend the conduit itself.

Figure 5 shows a conventional connector device, with conduit 1
It is equipped with a locking means for zero. Conduit 10
is flexible and has a bellows shape. A presser tube 12 is attached to the outer periphery of the electric conduit 10. This presser tube 12 is molded from synthetic resin, and is integrally molded with a ring-shaped disk presser portion 12a through which the electric conduit 10 is freely inserted. Furthermore, a threaded portion 12b is formed on the inner periphery of the other axial end of the presser tube 12.

Next, a lock component 13 is attached to the outer periphery of the conduit 10. This lock part 13 has a cylindrical ring shape in appearance and has a flange 13a at one end in the axial direction, and a plurality of slots are formed halfway from the other end. An engaging protrusion 13b is formed with a bend.

Next, the lock part 13 and the conduit 10 are
It is inserted into the main body cylinder 14. Lock part 13 here
The flange 13a is engaged with the opening edge of the cylinder body 14,
Further insertion is restricted. The main body tube 14 is also molded from synthetic resin, and has a threaded portion 14b formed on the outer periphery of its opening edge. The inner threaded portion 12b of the presser cylinder 12 is tightened onto this threaded portion 14b. When the presser tube 12 is tightened, the presser portion 12a of the presser tube 12 is
The flange 13a of the lock component 13 is sandwiched together with the opening edge of the main body cylinder 14, and the lock component 13 is fixed.

Therefore, the lock component 13 has its engaging protrusion locked in the recess of the conduit 10, and the conduit 10 is prevented from coming off.

(Problems to be solved by the invention) According to the above conventional connector device, the conduit 10
When installed as shown in Figure 5, a tensile strength of about 70 kg is required in the direction of arrow A in the figure. However, the strength of the above-mentioned materials is relatively low, and improvement in this point is desired.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector locking device that can increase the locking strength of a locking member such as a conduit through simple means.

[Structure of the invention] (Means for solving the problem) This invention provides a structure in which the flange of a lock part is clamped and tightened by the opening edge of the cylinder body and the presser part formed in the presser cylinder. The relationship between the flange and the opposing surface of the presser portion is such that the relationship is such that the flange moves away from the flange as it moves toward the central axis.

(Function) By the above means, the locked member is inserted into the presser tube in a state in which the engaging protrusion of the locking component is engaged with the locked member inserted into the main body tube via the presser tube and the locking member. Even if the lock is pulled in the direction of detachment from the lock, the flange is pressed against the inclined surface, causing the locking protrusion to further bite into the locked member, further increasing the locking strength. It will be strengthened.

(Example) An example of this invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of this invention, and the difference from the conventional one shown in FIG. 3 is the shape of the presser portion 12a of the presser tube 12. In addition, in the case of this embodiment, in order to improve the work efficiency of installing and positioning the conduit 10 and the lock part 13, a slot 131 is provided in a part of the ring shape in the axial direction (see Fig. 2a). is fully formed and can be opened against elastic forces. The normal engagement state between the conduit 10 and the lock component 13 is designed such that the plurality of engagement protrusions 13b bite into the recesses of the conduit 10, as shown in FIG. Since the other parts are the same as those of the apparatus shown in FIG. 3, the explanation will focus on the different parts with reference numerals.

The shape of the presser portion 12a of the presser tube 12 of the present invention is as follows:
A surface 121 of the holding portion 12a facing the flange portion 13a is formed to be inclined in a direction away from the flange portion 13a as it goes toward the central axis direction (FIGS. 1 and 2).
(see figure a).

Therefore, as shown in FIG. 2b, when a tensile force is generated on the conduit 10 in the direction of the arrow A, the tensile force also acts on the lock part 13 in the same direction.
Here, the flange portion 13a is connected to the inclined surface 1 of the presser portion 12a.
21. For this reason, the more the pulling force is applied in the direction of arrow A, the more the direction of the force is changed, and the engagement protrusion 13b is moved in the direction of arrow B.
A force is applied in the direction, that is, in the direction of biting into the conduit 10, and the locking strength of the conduit 10 is further strengthened.

Note that this invention is not limited to the above embodiments. In the above example, a piece of locking component is
There are 12 pieces, but this number is even smaller, with 2 pieces.
Alternatively, sufficient strength was obtained even when using one with three missing pieces. This means that even if some of the lock parts are missing, they can be used, and the yield can be improved. Furthermore, although the lock parts are molded from synthetic resin, they may also be made from metal.
Furthermore, in the above description, the electric conduit 10 is exemplified as the member to be locked, but the present invention is not limited to this, and the outer sheath may be an electric wire itself made of synthetic resin. Further, the effect was even greater when the tip of the engagement protrusion was shaped into a triangular tapered tooth shape.

Further, in the above embodiment, on the inner periphery of the cylinder body 14,
Furthermore, a small diameter portion 141 is formed that protrudes in the direction of the central axis, and by configuring it in this way, the tip of the conduit tube 10 comes into contact with this, eliminating rattling in the axial direction and protecting the internal wires. It is effective for

Furthermore, the flange 1 of the lock component 13 in the present invention
The relationship between 3a and the surface 121 of the presser tube 12 may be as shown in FIG.

That is, even if the collar portion 13a is configured to be inclined with respect to the surface 121 of the presser tube 12, the same effect as in the above embodiment can be obtained.

Further, in the above embodiment, the lock part 13 is provided with a slot 131. Since this slot 131 had a narrow width, there was no problem in the engagement protrusion 13b biting into the electric conduit 10. However, as shown in FIG.
It is convenient when forming the engaging protrusion 13b.
When it bites into the pipe, it causes rattling and weakens the biting effect. Therefore, in such a case, if a filler piece 141 as shown in FIG. 4 is provided on the open end surface of the main body cylinder 14 where the flange 13a faces and is inserted into the slot 131, the biting effect can be reduced. It won't hurt.

Effect of the Invention As described above, the invention provides a connector locking device which can increase the locking strength of a locked member such as an electric conduit by simple means.

[Brief explanation of the drawing]

Fig. 1 is a configuration explanatory diagram showing one embodiment of this invention, Fig. 2 is an explanatory diagram showing a part of Fig. 1, and Figs. 3 and 4 show other embodiments of this invention. The explanatory drawing, FIG. 5, is a sectional view showing a conventional connector device. 12... Presser barrel, 13... Lock parts, 14...
...Body tube, 12a...Press portion, 121...Face, 1
3a...flange portion, 13b...engaging protrusion.

Claims (1)

[Claims for Utility Model Registration] Appearance is cylindrical ring-shaped and has a flange at one end in the axial direction,
A lock part in which a plurality of slots are formed halfway from the other end side, and an engaging protrusion bent in the direction of the central axis is formed at the tip of each piece thus formed; a main body cylinder into which a part is inserted coaxially and the flange part is locked to an opening edge; In order to sandwich the flange of the lock part with the opening edge, it integrally includes a ring disc part extending from the opening edge toward the central axis, and the ring disc part is attached to the flange part. a holding cylinder whose surface facing the flange has an inclined surface in a direction that moves away from the flange toward the axis; and a locking member inserted into the main body cylinder via the holding cylinder and the lock part. Even if the locked member is pulled in the direction of detachment from the presser cylinder with the engaging protrusion of the locking part locked, the engaging protrusion will not move because the collar is pressed against the inclined surface. A locking device for a connector, characterized in that the locking device is configured to further cut into the member to be locked.