JPH0590822U - Wire connection device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a compact electric wire connecting device that facilitates the wiring work, avoids an insufficient wiring state. [Structure] Main body 1 having wire insertion hole 3 and wire insertion hole 3
An electric wire housed in the main body 1 that has a pressed portion 9 that is pressed by the tip of the electric wire 8 that is inserted into the And a connection tool 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to an electric wire connecting device for connecting electric wires.

[0002]

[Prior Art]

 A first conventional example (for example, Japanese Utility Model Laid-Open No. 60-026176) is shown in FIGS. That is, in this conventional example, the quick connection terminal 71 is provided inside the terminal block 70, and the electric connection is made simultaneously with the mechanical connection by inserting the electric wire 72 into the electric wire insertion hole 73.

A second conventional example (for example, Japanese Utility Model Laid-Open No. 63-037075) is shown in FIG. That is, in this conventional example, the electric wire 72 is mechanically held and electrically connected by the operating lever 74 after the electric wire 72 is inserted. The same applies to JP-A-3-49771. A third conventional example (for example, Japanese Utility Model Laid-Open No. 63-178066) is shown in FIGS. 14 and 15. That is, in this conventional example, the electric wire 72 moves the V-shaped spring 77 from the narrow storage position 75 to the wide regular storage position 76 by the electric wire 72, and the V-shaped spring 77 is opened at the regular storage position 76. To electrically and mechanically connect to the electric wire 72.

[0004]

[Problems to be solved by the device]

 However, in the first conventional example, since the wire pressing force of the quick-connect terminal 71 is generally strong, the wire insertion force at the time of inserting the wire is large, the workability of connection is poor, and a problem such as insufficient insertion is caused. .. If screw terminals are used instead of quick-connect terminals, the workability of wiring will be significantly impaired, and there may be problems such as insufficient tightening of screws or loosening of screws.

In the second conventional example, the operation lever 74 is not sufficiently rotated, and the electric wire pressing portion of the operation lever 74 is deformed due to heat or long-term deterioration. The physical connection is also lost, and there is a risk of discontinuity and fire. The third conventional example has a drawback that the V-shaped spring 77 needs to be moved, and a space for the movement is required, which is large. As an example similar to this conventional example, there is also a utility model Japanese Utility Model Laid-Open No. 64-034760.

[0006] Therefore, an object of the present invention is to provide a wire connecting device which is easy to wire connecting, can avoid an insufficient wire connecting state, and is compact.

[0007]

[Means for Solving the Problems]

 An electric wire connecting device according to claim 1 has a main body having an electric wire insertion hole, a pressed portion which is operated by being pressed by a tip of an electric wire inserted into the electric wire insertion hole, and is interlocked with the operation of the pressed portion. And an electric wire connector housed in the main body having a conductive portion that comes into contact with the electric wire.

According to a second aspect of the present invention, in the first aspect, the pressed portion is a reversing spring, and the conductive portion is driven by the pressed portion to come into contact with the electric wire. The electric wire connecting device according to claim 3 is the rotary cam according to claim 1, wherein the pressed portion is rotated by being pressed by the electric wire, and the conductive portion is opened by the pressed portion and the pressing portion. Has a sandwiching piece for sandwiching the electric wire.

The electric wire connecting device according to a fourth aspect is the electric wire connecting device according to the first aspect, wherein the pressed portion has an inner diameter smaller than an outer diameter of the electric wire and is pressed on the same axis line by the electric wire in a restored state. This is a coil spring whose inner diameter is made larger than the outer diameter of the electric wire, and also serves as the conductive portion.

[0010]

[Action]

 According to the electric wire connecting device of claim 1, when the electric wire is inserted into the electric wire insertion hole of the main body, the conductive portion does not come into contact with the electric wire until the pressed portion of the electric wire connecting tool is pressed by the tip of the electric wire, and the connected state is established. However, when the electric wire presses the pressed part, the conductive part comes into contact with the electric wire due to the operation of the pressed part, and the electric wire is properly connected. Therefore, as compared with the conventional example, the wiring work is easier, the insufficient connection state can be avoided, and the size can be reduced.

According to the electric wire connecting device of the second aspect, in the first aspect, the pressed portion is an inversion spring, and the conductive portion is driven by the pressed portion to come into contact with the electric wire. With a simple structure, the same effect as that of claim 1 is provided. According to the electric wire connecting device of claim 3, in the claim 1, the pressed portion is a rotating cam which is rotated by being pressed by the electric wire, and the conductive portion is opened by the pressed portion and is pressed. Since the holding piece for holding the electric wire by the rotation of the portion is provided, it has the same effect as that of claim 1 with a simple configuration.

According to a fourth aspect of the present invention, there is provided the electric wire connecting device according to the first aspect, wherein the pressed portion has an inner diameter smaller than an outer diameter of the electric wire and is pressed on the same axis line by the electric wire in a returning state. It is a coil spring whose inner diameter becomes larger than the outer diameter of the electric wire when it is compressed, and also serves as the conductive part.Therefore, in the connected state, the inner peripheral surface of the coil spring wraps around the outer circumference of the electric wire. The electric contact portion has multiple points, so that the contact reliability is high and the simple construction has the same effect as that of claim 1.

[0013]

【Example】

 A first embodiment of the present invention will be described with reference to FIGS. That is, this electric wire connecting device has the main body 1 and the electric wire connecting device 2. The main body 1 has an electric wire insertion hole 3 into which the electric wire 8 is inserted. The main body 1 is formed in a box shape composed of a body 4 and a cover 5, and a pair of electric wire insertion holes 3 is formed in one side wall of the joint portion, and a pair of load side connection grooves 6 is formed in the other side wall thereof. An accommodating groove 7 for accommodating the electric wire connecting device 2 is formed between the accumulator 3 and the load side connecting groove 6, and recesses 13 and 14 are further formed in the accommodating groove 7. The cover 5 and the body 4 are fixed by any fixing means (not shown).

The electric wire connector 2 has a pressed portion 9 that is operated by being pressed by the tip of the electric wire 8 inserted into the electric wire insertion hole 3, and contacts the electric wire 8 in conjunction with the operation of the pressed portion 9. It has a conductive part 10 and is housed in the main body 1. The pressed part 9 is formed integrally with the contact spring 15 using an inversion spring as an example. The contact spring 15 has a substantially U-shaped fixed portion 11 and a substantially L-shaped tilting piece 12 extending from one end of the fixing portion 11. A bent step 16 is formed on the side of the fixed portion 11 and is formed by cutting and bending across the bent step 16. A slit 13 is formed in the L-shaped bent portion of the tilting piece 12, and a contact piece 17 is bent at the tip.

The conductive portion 10 is a thin leaf spring as an example. The conductive portion 10 is penetrated by the slit 13, receives the contact piece 17 at the tip portion, and bends the recessed portion 18 that contacts the electric wire 8. In this electric wire connector 2, the fixing portion 11 is fitted and fixed in the concave portion 14 of the groove 7 of the body 4, the end 20 of the conductive portion 10 is exposed from the groove 6 of the base 4, and the electric wire on the load side is exposed in this exposed portion. (Not shown) is connected by soldering or the like.

In the electric wire connector 2, an electric wire holding spring 19 formed by bending a leaf spring into a substantially J shape is positioned inside the electric wire insertion hole 3, and is locked to the electric wire 8 inserted in the electric wire insertion hole 3. .. 1A shows a state in which the electric wire 8 is not inserted, and the pressed portion 9 is provided so as to bulge toward the electric wire insertion side. FIG. 3B shows a state in which the electric wire 8 is inserted and engaged with the electric wire holding spring 19 but the pressed portion 9 is not pressed, and the conductive portion 10 is not in contact with the electric wire 8. FIG. 7C shows a state in which the pressed portion 9 is pressed by the tip of the electric wire 8. The reversing action of the pressed portion 9 causes the tilting piece 12 to tilt forward, and the contact piece 17 presses the conductive portion 10. And the surface of the recess 18 is in contact with the electric wire 8.

When disconnecting the electric wire 8, the electric wire holding spring 19 can be pressed to unlock the electric wire 8, and the electric wire 8 can be removed. The reversing spring of the pressed portion 9 can also be automatically returned. Alternatively, the cover 5 may be removed and the electric wire 8 may be removed. According to this embodiment, when the electric wire 8 is inserted into the electric wire insertion hole 3 of the main body 1, the conductive portion 10 does not contact the electric wire 8 until the pressed portion 9 of the electric wire connector 15 is pressed by the tip of the electric wire 8. Although the connection state is not established, when the electric wire 8 presses the pressed portion 9, the operation of the pressed portion 9 causes the conductive portion 10 to come into contact with the electric wire 8 and the electric wire 8 is in the normal connected state. Therefore, as compared with the conventional example, the wiring work becomes easier, the insufficient connection state can be avoided, and the size can be reduced. In other words, there is no danger of heat generation or ignition due to imperfect connection, and the equipment works safely because it does not operate. Moreover, such an effect can be achieved with a simple configuration.

A second embodiment of the present invention is shown in FIGS. 4 to 7. That is, the electric wire connecting device is a rotating cam in which the pressed portion 9 is pressed by the electric wire to rotate, and the conductive portion 10 is opened by the pressed portion 9 and the electric wire 8 is clamped by the rotation of the pressed portion 9. It has a clamping piece 28. The pressed portion 9 has a shaft 22 passing through a through hole 21 formed in the cover 5, and an operating portion 24 having a driver locking groove 30 formed at an end of the shaft 22 is rotatably fitted in the through hole 21. A cam piece 23 projects radially from the shaft 22 inside. The pressed portion 9 is rotatably fitted in the through hole 21 and is housed in the housing groove 7 of the base 4, but the shaft 22 is displaced from the center line of the wire insertion hole 3.

The conductive portion 10 is formed in a U shape so as to surround the cam piece 23, and a load side connecting portion 25 extends from an intermediate portion thereof, while forming a wire contact portion 26 that contacts the wire 8 at both ends. is doing. The conductive portion 10 is accommodated in the accommodating groove 7 of the base 4, the electric wire contact portion 26 faces the electric wire insertion hole 3, the load side connecting portion 25 is exposed from the load side connecting groove 6, and is soldered to the electric wire 29 on the load side. Etc. are connected. Further, the conductive portion 10 has a U-shaped leaf spring 27 that is inclined inward, and holds both sides of the holding piece 28 to urge the holding piece 28 in a direction to narrow the holding piece 28. The leaf spring 27 is housed in the bottom of the housing groove 7, and the holding piece 28 is inserted therein. Further, the cam piece 23 is inserted between the sandwiching pieces 28 and stretched in the longitudinal direction of the cam piece 23 to open the sandwiching piece 28 as shown in FIG.

The electric wire 8 is connected by pressing the cam piece 23 with the tip of the electric wire 8 as shown in FIG. 7A and rotating the pressed portion 9 as shown in FIG. 7B. The holding piece 28 is narrowed by the leaf spring 27, and is held in contact with the electric wire 8 by the electric wire contact portion 26, thereby electrically and mechanically connecting. The conductive portion 10 can be opened again by rotating the cam piece 23 so as to bend the electric wire 8 by rotating the driver locking groove 30 with a driver or the like, thereby removing the electric wire 8 from the conductive portion 10. be able to.

Therefore, this embodiment has the same effect as that of the first embodiment. The leaf spring 26 may be another spring means. A third embodiment of the present invention is shown in FIGS. That is, in this wire connecting device, when the pressed portion 9 has the inner diameter D smaller than the outer diameter d of the wire 8 in the returned state, the wire 9 is pressed by the wire 8 and compressed, so that the inner diameter D is outside the wire 8. The coil spring is larger than the diameter d and also serves as the conductive portion 10. In the embodiment, a conical portion 32, which is arranged in the storage groove 7 of the base 4 and has an inner diameter facing the inner side of the wire insertion hole 3 and larger than the outer diameter d of the electric wire 8, is formed. The department is configured to meet the above conditions. In the embodiment, which constitutes an electric wire connector, the main body 1 has the electric wire insertion holes 3 at both ends thereof, the partition 31 at the center of the housing groove 7, and the pressed portion 9 which also serves as the conductive portion 10. The pair of tip portions are connected by a connecting portion 33, and each pressed portion 9 is housed in the housing groove 7 so that the connecting portion 33 straddles the partition portion 31.

When the electric wire 8 is inserted through the electric wire insertion hole 3, it enters the conical portion 32 of the pressed portion 9 until it reaches a portion where the inner diameter D is smaller than the outer diameter d of the electric wire 8 in the returned state. The electric wire 8 is in a non-contact state. When the electric wire 8 is further inserted, the tip of the electric wire 8 hits a portion where the inner diameter D of the pressed portion 9 is smaller than the outer diameter d of the electric wire 8 and is pressed to push the electric wire 8 as shown in (a) to (b) of FIG. The pressing portion 9 is compressed. The pressed portion 9 has a large inner diameter D due to compression, but is insufficiently inserted while the inner diameter D is smaller than the outer diameter d of the electric wire 8. When the pushing force of the electric wire 8 is released in this state, the pressed portion 9 is compressed. The electric wire 8 is pushed out by the force.

When the pressed portion 9 is further compressed to increase the inner diameter D and becomes larger than the outer diameter d of the electric wire 8, the pressed portion 9 is fitted to the outer diameter d of the electric wire 8 as shown in FIG. As the inner diameter D of the pressed portion 9 becomes smaller than the outer diameter d of the electric wire 8 at this time, the electric wire 8 is wound around the outer periphery of the electric wire 8. They will come into contact and will be in an electrically and mechanically connected state. On the other hand, if the cover 4 is removed and the pressed portion 9 is compressed, the electric wire 8 can be removed.

As described above, in the connected state, the inner peripheral surface of the coil spring, which is the pressed portion 9, is wound around the outer periphery of the electric wire 8, so that the number of electric contact portions is increased and the contact reliability is improved. It is also ultra-compact and can be manufactured at low cost.

[0025]

[Effect of the device]

 According to the electric wire connecting device of claim 1, when the electric wire is inserted into the electric wire insertion hole of the main body, the conductive portion does not come into contact with the electric wire until the pressed portion of the electric wire connecting tool is pressed by the tip of the electric wire, and the connected state is established. However, when the electric wire presses the pressed part, the conductive part comes into contact with the electric wire due to the operation of the pressed part, and the electric wire is properly connected. Therefore, as compared with the conventional example, there is an effect that the wiring work becomes easier, the insufficient connection state can be avoided, and the size can be made compact.

According to the electric wire connecting device of the second aspect, in the first aspect, the pressed portion is a reversing pin, and the conductive portion is driven by the pressed portion to come into contact with the electric wire. With a simple structure, the same effect as claim 1 is obtained. According to the electric wire connecting device of claim 3, in the claim 1, the pressed portion is a rotating cam which is rotated by being pressed by the electric wire, and the conductive portion is opened by the pressed portion and is pressed. Since it has a sandwiching piece for sandwiching the electric wire by the rotation of the portion, it has the same effect as claim 1 with a simple configuration.

According to a fourth aspect of the present invention, in the first aspect, in the first aspect, the pressed portion has an inner diameter smaller than an outer diameter of the electric wire and is pressed on the same axis line by the electric wire in a returning state. It is a coil spring whose inner diameter becomes larger than the outer diameter of the electric wire when it is compressed, and also serves as the conductive part.Therefore, in the connected state, the inner peripheral surface of the coil spring wraps around the outer circumference of the electric wire. The number of electrical contact portions is multipoint, the contact reliability is high, and the simple structure has the same effect as the first aspect.

[Brief description of drawings]

FIG. 1 is an explanatory view of a process of connecting an electric wire according to a first embodiment of the present invention.

FIG. 2 is an external perspective view of a wire connection device.

FIG. 3 is an exploded perspective view thereof.

FIG. 4 is an external perspective view of a second embodiment.

FIG. 5 is a plan view with the cover removed.

FIG. 6 is an exploded perspective view.

FIG. 7 is an explanatory diagram of a process of connecting electric wires.

FIG. 8 is an exploded perspective view of a third embodiment.

FIG. 9 is a plan view with a cover removed.

FIG. 10 is an explanatory diagram of an electric wire connection process.

FIG. 11 is a perspective view of a first conventional example.

FIG. 12 is an internal front view of the connection state.

FIG. 13 is a sectional view of a second conventional example.

FIG. 14 is a cross-sectional view of a third conventional example before an electric wire is inserted.

FIG. 15 is a sectional view of the electric wire connection state.

[Explanation of symbols]

 1 Main body 2 Electric wire connecting tool 3 Electric wire insertion hole 9 Pressed portion 10 Conductive portion

Claims (4)

[Scope of utility model registration request] 1. A main body having an electric wire insertion hole, and a pressed portion which is operated by being pressed by the tip of the electric wire inserted into the electric wire insertion hole, and which contacts the electric wire in conjunction with the operation of the pressed portion. An electric wire connecting device comprising: an electric wire connecting tool having a conductive part and housed in the main body. 2. The wire connecting device according to claim 1, wherein the pressed portion is a reversing spring, and the conductive portion is driven by the pressed portion to come into contact with the electric wire. 3. The pressed portion is a rotary cam which is rotated by being pressed by the electric wire, and the conductive portion is a leg which is opened by the pressed portion and which holds the electric wire by the rotation of the pressed portion. The electric wire connecting device according to claim 1. 4. The pressed portion has an inner diameter smaller than an outer diameter of the electric wire in a returned state, and is pressed by the electric wire on the same axis line to be compressed so that the inner diameter is smaller than an outer diameter of the electric wire. The electric wire connecting device according to claim 1, wherein the electric wire connecting device is also a coil spring which also becomes larger.