JP2585890Y2 - Quick connection terminal device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a quick-connecting terminal device for easily connecting electric wires, and more particularly to a disconnection structure for the terminal.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional quick-connecting terminal device in which electrical connection and mechanical fixing of an electric wire can be performed only by inserting a stripped end of the electric wire.
This is one in which an electric wire insertion hole 11 for inserting a stripped end of the electric wire 9 into the terminal chamber of the housing 1 is formed in the housing 1 and an electric fitting 2 is arranged in the terminal chamber. , The leading end of the wire 9 projecting in a direction oblique to the insertion direction of the wire 9
The lock spring 3 is integrally provided at the tip of the lock spring. If the tip of the wire 9 is inserted through the wire insertion hole 11, the wire 9
Penetrates into the terminal chamber while bending the locking spring 3.
The distal end of the locking spring 3 is locked to the electric wire 9 so that the electric wire 9 is mechanically fixed and is electrically connected to the current-carrying metal fitting 2.

In this case, the connection of the electric wire 9 is released by releasing the release hole 1 formed in the housing 1 in parallel with the electric wire insertion hole 11.
2, a release tool 5 such as a pin is inserted into the terminal chamber, and the locking spring 3 is pressed rightward in the figure to release the locking between the locking spring 3 and the electric wire 9. This is done by pulling out.

[0004]

However, in this case, since the release tool 5 presses the base of the locking spring 3, the locking spring 3 is flexed to release the lock when disconnecting the electric wire. Must strongly press the release tool 5, and a large force is required for the release operation. The release hole 12 is the wire insertion hole 1
Because it is parallel to 1 and the length of the locking spring 3 is short,
Since the release hole 12 and the electric wire insertion hole 11 are located close to each other, the electric wire 9 hinders the disconnection, making it difficult to insert the release tool 5 and pulling out the electric wire 9 in the unlocked state. It has become difficult.

The present invention has been made in view of the above points, and an object of the present invention is to provide a quick-connecting terminal device capable of extremely easily disconnecting an electric wire using a release tool. is there.

[0006]

According to the present invention, there is provided a locking spring for locking and fixing an electric wire inserted from an electric wire insertion hole formed in a housing at a tip thereof, and a release hole formed in the housing. In the quick-connecting terminal device for releasing the locking and fixing by pressing the locking spring by a releasing tool inserted from the above, the releasing hole includes a guide surface for inserting the releasing tool substantially parallel to the tip end of the locking spring, It is characterized in that it has a fulcrum that acts by levering the release tool.

[0007]

According to the present invention, since the release tool can be inserted almost in parallel with the tip of the lock spring, there is almost no resistance from the lock spring at the time of insertion, and the release tool is tilted after insertion. Only by using the fulcrum in the release hole, the tip of the locking spring can be bent by the principle of leverage, so that the force required for releasing the lock can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiment. In FIG. 2, reference numeral 1 denotes a housing formed of an insulating material. 3 are provided, and a wire insertion hole 11 and a release hole 12 are formed on one side wall. The wire insertion hole 11 is formed in parallel with the current-carrying fitting 2, and the locking spring 3 has a distal end directed toward the back of the terminal room and toward the current-carrying fitting 2 when viewed from the wire insertion hole 11, that is, the wire insertion hole Wire 9 from 11
Extends obliquely to the insertion direction of the wire 9, and by inserting the tip of the wire 9 from which the coating of the wire 9 has been stripped from the wire insertion hole 11,
The electric wire 9 moves toward the back while bending the locking spring 3, is locked at the tip of the locking spring 3, and is pressed against the electric fitting 2.

The electric wire 9 in this quick connection terminal device
Is released by inserting the pin-shaped release tool 5 from the release hole 12 and pulling out the electric wire 9 in a state where the locking spring 3 is bent, and the release hole 12 in FIG. a) As shown in (b), the outer surface side of the housing 1 is longer than the inner surface side facing the terminal chamber, has a long hole shape when viewed from the outer surface of the housing 1, and its longitudinal direction is the wire insertion hole. 11 and the longitudinal direction of the distal end of the locking spring 3, and the diameter of the opening at the portion facing the terminal chamber is only slightly larger than the diameter of the release tool 5. Further, the inner wall surface of the release hole 12 on the side remote from the wire insertion hole 11 becomes a guide surface 14 having an angle substantially equal to the inclination angle θ of the distal end portion of the locking spring 3 locked in the wire 9. ing.

In this embodiment, as shown in FIG. 1 (a), when the pin-shaped release tool 5 is inserted through the release hole 12, it is substantially parallel to the tip of the locking spring 3 in the locked state. At this time, the locking spring 3 hardly gives any resistance to the insertion operation until the distal end of the release tool 5 is located near the distal end of the locking spring 3. Thereafter, as shown in FIG. 1B, if the release tool 5 is inclined by moving the release tool 5 in the longitudinal direction of the release hole 12 toward the electric wire 9 as shown in FIG. The inner wall surface on the side serves as a fulcrum S for operating the release tool 5 by leverage, and the leading edge of the release tool 5 bends the tip of the lock spring 3 to engage the lock spring 3 with the electric wire 9. Release the suspension. At this time, since the lever 5 pushes the tip of the locking spring 3 in addition to utilizing the principle of leverage, the required force is extremely small. When the electric wire 9 is pulled out in the above-mentioned unlocked state, the connection of the electric wire 9 can be released, and since the releasing tool 5 is located at a position away from the electric wire 9, the releasing tool 5 is pulled out of the electric wire 9. There is no hindrance to operation. In the drawing, reference numeral 16 denotes a stopper for preventing the locking spring 3 from being excessively deformed and deformed when the connection is released using the release tool 5. As shown in FIG. 2 (c), if a locking groove 13 for holding a state in which the release tool 5 is bending the locking spring 3 is connected to the release hole 12,
Since the hand can be kept away from the release tool 5 when the electric wire 9 is pulled out, the disconnection operation is further facilitated.

In the embodiment shown in FIG. 3, the inner wall surface of the release hole 12 on the side of the wire insertion hole 11 is made parallel to the wire insertion hole 11, so that the housing 1 having the wire insertion hole 11 and the release hole 12 is formed. The figure shows that the manufacturing by molding is simplified. In this case, the fulcrum S is located at a corner of the inner wall surface of the release hole 12 on the wire insertion hole 11 side on the terminal room side. FIG. 4 shows a guide surface 14 for inserting the release tool 5 so that the inner wall surface of the release hole 12 on the side of the electric wire insertion hole 11 is substantially parallel to the distal end of the locking spring 3, and the fulcrum S is used as the release hole 12. Are positioned at corners on the outer surface side. Incidentally, the locking spring 3 in this embodiment is
The wire 9 is formed integrally with the current-carrying metal fitting 2 and has a U-shaped cross section so as to have a function of preventing the electric wire 9 from laterally shifting.

As shown in FIG. 5, the release hole 12 can be arranged on a wall surface of the housing 1 different from the wall surface on which the wire insertion hole 11 is located.

[0013]

As described above, in the present invention, in releasing the locking and fixing of the electric wire by the locking spring, the releasing tool can be inserted substantially in parallel with the tip of the locking spring. There is almost no resistance from the spring,
Moreover, the tip of the locking spring can be bent by the principle of leverage using the fulcrum in the release hole only by tilting the release tool after insertion, so that the force required for releasing the lock can be reduced. The disconnection of the electric wire using the release tool can be performed very easily.

[Brief description of the drawings]

FIG. 1 shows a release operation in one embodiment.
(a) is a cross-sectional view showing a state in which the release tool is inserted substantially parallel to the tip end of the lock spring, and (b) is a cross-sectional view showing a state in which the lock by the lock spring is released by the release tool.

2A is a cross-sectional view of the above, FIG. 2B is a side view, and FIG. 2C is a side view of another example.

FIG. 3 is a sectional view of another embodiment.

FIG. 4 is a sectional view of another embodiment.

FIG. 5 is a sectional view of still another embodiment.

FIG. 6 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 Lock spring 5 Release tool 9 Electric wire 11 Electric wire insertion hole 12 Release hole 14 Guide surface S Support point

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-82174 (JP, A) JP-A-58-101469 (JP, U) JP-A-1-73762 (JP, U) JP-A-5-102 43468 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) H01R 4/48

Claims (1)

(57) [Scope of request for utility model registration] 1. A lock spring for locking and fixing an electric wire inserted through an electric wire insertion hole formed in a housing at an end thereof, and a lock spring by a release tool inserted from a release hole formed in the housing. In the quick-connecting terminal device for releasing the locking and fixing by pressing, the release hole has a guide surface for inserting the release tool substantially parallel to the tip end of the locking spring, and has a fulcrum that acts by levering the release tool. A quick-connecting terminal device.