JPH0672164U - Plug-in connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the leaf spring member and the conductive plate that form the plug-in connector, improve the workability and the assemblability, and enable reliable electrical connection. [Structure] An electric conductor 20 for connecting to another electric wire by inserting the electric wire peeling portion 2 is composed of a conductive plate 21 and a plate-shaped spring member 22 having an elastically deformable tongue piece 24. The leaf spring member is formed by bending the hook-shaped hooking portion 23 at one end, forming the strip-shaped tongue portion on the other end side, and folding this portion back to the hook-shaped hooking portion side. The conductive plate 21 is bent in a substantially L shape, the hook-shaped hooking portion is hooked on one end portion 30, and the bending portion 32 for holding the folded portion 25 of the spring member is bent and formed on the other end portion 31. There is.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a plug-in connector that can easily and properly connect to another wire simply by inserting one end of the wire.

[0002]

[Prior art]

 This type of plug-in connector has a structure in which a conductor consisting of a conductive plate for connecting wires to each other and a spring piece for pressing the wires against the conductive plate is installed inside a holder made of a heat-resistant insulating material. Have

According to such a plug-in connector, anyone can easily carry out the wiring operation by peeling off the coating of the wire connection end to be connected and simply inserting the peeled portion from the insertion opening of the holder. Thus, for example, those having various structures have been conventionally known, including Japanese Utility Model Publication No. 1-2228.

[0004]

[Problems to be solved by the device]

 By the way, one of the requirements for the above-mentioned plug-in connector is that it has a simple structure and is easy to assemble, and that the peeling part, which is the wire connection end, can be easily inserted into the holder. At the same time, there is a pressure contact structure by the conductor of the electric wire that reliably prevents the electric wire from coming out after it is inserted, and can perform the electrical connection by the pressure contact connection at the peeling end of the electric wire with high reliability in this state.

That is, as such a conductor, conventionally, a conductor composed of a conductive plate made of a copper material or the like and a plate spring having a spring piece for pressing the electric wire peeling portion against the conductive plate is used. However, conventional conductors are not only simple in structure and easy to assemble, but also easy to insert the wire peeling part to be inserted, and secure the electrical connection by ensuring the contact area and contact pressure. Nothing has been proposed yet that can both prevent the detached part of the inserted electric wire from coming off.

In particular, when fixing the base end portion of the leaf spring to the conductive plate, if a plurality of wire insertion holes are bored in one plate portion of the conductive plate that is bent to have an L shape, for example. At the same time, a caulking piece is provided on the outer edge of the leaf spring, and the protrusion provided on a part of the caulking piece is caulked through the hole formed on the leaf spring side. Many are attached and fixed.

However, in the case of the conductor made of the conductive plate and the leaf spring by the crimping, the wire is inserted into the wire insertion hole of the conductive plate, and the leaf spring is press-contacted to the insertion end side of the wire. Then, when a force is applied to the wire receiving part of the conductive plate and the tip of the leaf spring when it is electrically connected, this causes the part of the conductive plate that has the wire insertion hole or the leaf spring to be caulked. As a deforming force is applied to the part, the part of the conductive plate that has the wire insertion hole and the caulking part deforms in the direction in which the tip of the leaf spring separates from the wire and reduces the pressure contact force, resulting in deterioration of electrical conductivity. Will end up.

Further, in such a conventional conductor, depending on the caulking state of the fixed portion by caulking, the tip side of the leaf spring is easily lifted up from the conductive plate, so that the electric wire receiving portion of the leaf spring and the electric conducting plate is The gap between them is larger than the diameter of the electric wire, and even if the electric wire is inserted, it is difficult to prevent the leaf spring from biting into the electric wire and preventing it from coming off.

In addition, the angle formed between the tip of the leaf spring crimped and fixed to the conductive plate and the conductive plate is important for easy insertion of the electric wire and reliable prevention of disconnection. Is. That is, if the angle formed between the conductive plate forming the conductor and the spring piece is set to be small in consideration of the pluggability of the wire and the reliability of the electrical connection, the function of preventing the wire from coming off by the spring piece is impaired. On the other hand, if the above-mentioned angle is set to a large value so that the spring piece can bite into the electric wire well and prevent the spring piece from coming off securely, the spring plate will be inserted between the conductive plate that constitutes the conductor of the electric wire and the spring piece. It becomes difficult to insert, and the contact area cannot be secured, and the electrical connection performance is impaired.

For this reason, a conductive plate bent into a substantially U-shape and a plate spring having a substantially “<” shape installed and arranged inside thereof are used, and one plate portion of this plate spring is It is placed along the inner surface of one side of the conductive plate, and the other plate is extended with an inclination toward the other side.When the peeling part of the wire is inserted, the bending angle of this plate spring A structure has been proposed in which the wire peeling portion is pressed against the inner surface of the other side of the conductive plate by its repulsive force by elastically deforming the wire so as to form an acute angle.

However, with such a structure, although the structure and assembly of the conductive plate and the leaf spring are easy, there is a problem in obtaining the required pressure-contact-holding state of the wire peeling portion. That is, when the wire peeling part is inserted and the leaf spring is bent at an acute angle, the repulsive force also acts on the bent one side of the conducting plate to open the U-shaped conducting plate, As a result, it is not possible to maintain the crimping and holding state of the wire peeling part due to the plate band, and it is not possible to ensure the reliability of the electrical connection of the wire, and also the wire cannot be prevented from coming off. However, it is desirable to take some measures to eliminate these problems.

The present invention has been made in view of such circumstances, and uses a plate-shaped spring member and a conductive plate formed by a simple bending process and simply combines them. For the purpose of obtaining a plug-in connector that can configure a conductor that can electrically connect the stripped portion of the wire and can securely hold the stripped portion of the wire under pressure and ensure the reliability of the electrical connection. There is.

[0013]

[Means for Solving the Problems]

 In order to meet such a demand, the plug-in connector according to the present invention has a plurality of tongue pieces each having a hook-shaped hooking portion formed by bending at one end and a strip shape at the other end. A plate-shaped spring member whose tongue portion is bent toward the hook-shaped hooking portion through the folded-back portion, and a hook-shaped hooking portion which is entirely bent and formed in a substantially L shape. And a conductive plate having a bent portion that is bent inward so as to hold and hold the folded portion at the other end, and the other end of the conductive plate. By inserting the peeling part of the wire from the multiple wire insertion holes formed in the plate part on the side of the plate, the conductive plate is pressed and held between the plate part on one end side and the elastically deformed tongue piece. Constitutes an electric conductor for connection with the electric wire.

In addition to the above-described structure, the plug-in connector according to the present invention is such that one end of the plate-shaped spring member is formed into a strip shape, and a hook-shaped hooking portion is formed every other one. The remaining portion is configured as a second tongue piece that is pressed against the peeled portion of the wire.

[0015]

[Action]

 According to the present invention, a plate-shaped spring member having a hook-shaped hooking portion at one end and a plurality of tongue pieces formed in a strip shape with a folded-back portion at the other end side, and the hook-shaped hooking portion at one end The conductive plate, which is hooked on the other end and bent at the other end so as to hold the folded portion, can be formed by a simple bending process, and can be integrally assembled by a simple assembling work. The plurality of tongue pieces of the spring member are configured as electric wire pressure contact pieces that are elastically deformed by the insertion of the electric wire peeling portion when the folded portion is held and held by the bent portion of the conductive plate. It can be electrically connected to the electric wire peeling portion by sandwiching it by pressure with the plate portion on the one end side.

Further, according to the present invention, one end of the plate-shaped spring member is formed in a strip shape, and a second tongue piece pressed against the wire peeling portion is formed between every other hook-shaped hooking portion. Therefore, the electrical connection with the stripped portion of the wire can be performed more reliably.

[0017]

【Example】

 1 to 4 show an embodiment of a plug-in connector according to the present invention. In these drawings, the embodiment shows a type in which three electric wires 1 are connected. As the electric wires 1, single-core electric wires are generally used, and the connecting ends of the respective connectors, which are connectors, are prepared as peeling portions 2 by peeling the insulating coating 1a, as is well known. .

As is clear from FIGS. 1 (a) and 1 (b), the plug-in type connector indicated by reference numeral 10 is made of a synthetic resin material having a heat-resistant insulating property so as to have a substantially housing shape. Like the holder 11, the formed holder 11 and the cap 12 made of a synthetic resin material having heat-resistant insulation so as to close the opening end of the holder 11 on the wire insertion end side are closed. The cap 12 is provided with three electric wire insertion ports 13 into which the peeling portions 2 of the electric wires 1 are appropriately inserted.

It should be noted that the cap 12 is engaged with the opening end of the holder 11 by an appropriate retaining means 15 and is integrally formed. Further, the electric wire insertion port 13 formed in the cap 12 is formed in a substantially trumpet shape having a large diameter on the outer end side, and the electric wire 1 is easily inserted.

Reference numeral 20 denotes an internal space 14 formed by being closed by a cap 12 in the holder 11, and holds each electric wire peeling portion 2 by pressing and holding the electric wire peeling portion 2 with another electric wire (not shown). As is clear from FIGS. 1 to 4, this conductor 20 is an electric conductor for electrical connection. For example, a conductive plate material such as a tin plate or the like is folded into a substantially L shape. Electrically connecting to another wire by pressing the wire stripping part 2 between the bent conductive plate 21 and a part of the conductive plate 21 integrally held and held. And a plate-shaped spring member 22 for carrying out.

Further, according to the present invention, the plate-like spring member 22 described above has a hook-like hooking portion 23 formed at one end thereof by bending as shown in FIGS. 1, 2 and 4. It has a plurality of strip-shaped tongue pieces 24 on the end side, and the tongue-piece forming portion is bent and formed toward the hook-shaped hooking portion 23 via the folded-back portion 25. Here, reference numeral 26 in the figure denotes three electric wire insertion holes formed in parallel with the base end portion erected from the hook portion 23, and 27 is a notch forming the tongue piece 24.

As is clear from FIGS. 1, 3 and 4, the conductive plate 21 is entirely bent and formed in a substantially L shape, and is formed at one end (the tip of one plate 30). The hook portion 23 of the plate-like member 22 is hooked and locked, and the folded portion 25 is held inward at the other end (the end of the other plate portion 31). A bent portion 32 that is bent is formed. Here, reference numeral 33 in the drawing denotes an electric wire insertion hole into which the electric wire peeling portion 2 formed in parallel with the other plate portion 31 is inserted.

Further, in such a conductive plate 21, one plate portion 30 is bulged at a position which does not correspond to the wire insertion hole 33, as is clear from FIGS. 3 (a) to 3 (d). By forming it, a ridge portion 30a for forming a guide groove (not shown in FIG. 1) for guiding the electric wire peeling portion 2 is formed.

According to such a conductive plate 21, by sequentially inserting the wire stripping portions 2 from the plurality of wire insertion holes 33 formed in the other plate portion 31, one of the conductive plate 21 and the other plate portion 30 is formed. The elastically deformed plate-shaped spring member 22 is pressed and held between the tongue piece 24 and the other electric wire 1.

That is, according to the conductor 10 having the above-described configuration, a plate in which a plurality of tongue pieces 24 are formed in a strip shape with the hook-shaped hooking portion 23 at one end and the folded-back portion 25 at the other end side. The spring member 22 and the hooked hook 23 are hooked on the one end 30, and the other end 31 is bent so as to hold the folded portion 25. It can be formed by machining and is integrally assembled by a simple assembly operation.

The plurality of tongue pieces 24 of the plate-shaped spring member 22 are elastically deformed by the insertion of the electric wire peeling portion 2 when the folded-back portion 25 is held and held by the bent portion 32 of the conductive plate 21. It is configured as a pressure contact piece, and is held in pressure contact with one plate portion 30 of the conductive plate 21, so as to be clear from the other wire peeling portion 2 as is clear from FIGS. Can be electrically connected.

Here, the hook-shaped hook portion 23 of the plate-shaped spring member 22 on the tip of one plate portion 30 of the conductive plate 21 is provided between the step portion 11 a formed on the bottom portion of the holder 11 and the cap 12. When assembled with the conductive plate 21, it is assembled integrally without being disengaged.

In particular, in the above-described configuration, the plate-shaped spring member 22 has one end hooked by the hook-shaped hook portion 23 to the tip of one plate portion 30 of the conductive plate 21, and the strip-shaped spring member on the other end side. The folded portion 25, which extends obliquely on one plate portion 30 of the conductive plate 21 into which the electric wire peeling portion 2 is inserted, holds the tongue portion by the bent portion 32 formed at the tip of the other plate portion 31. The conductive plate 21 is stably assembled and held.

That is, in such a configuration, when the electric wire peeling portion 2 is inserted into the conductor 20 arranged in the holder 11, as shown in FIG. 1B, the plate-shaped spring member 2 2 The tongue piece 24 of the electric wire bites into the electric wire peeling portion 2 as an electric wire pressure contact piece in a state of giving an elastic force to the electric wire peeling portion 2, and presses the electric wire peeling portion 2 onto one plate portion 30 of the conductive plate 21 for electrical connection It is possible to secure the condition and prevent it from coming out.

At this time, in the plate-shaped spring member 22, one end of the plate-shaped spring member 22 is hooked and locked to the hook-shaped hooking portion 23, and the folded-back portion 25 having the strip-shaped tongue piece 24 on the tip side, The bent portion 32 formed at the other end of the conductive plate 21 can stably hold and retain the tongue piece 24 regardless of the swing displacement.

In the above-described embodiment, the wire insertion hole 26 is formed on the base end side of the plate-shaped spring member 22, and the wire peeling portion 2 is inserted through the hole 26 as well. Although configured, this insertion hole 26 may be omitted. In this way, the holder 11 can be downsized and the compact plug-in connector 10 can be obtained. Further, the hook portion 23 hooked on one end of the conductive plate 21 of the plate spring member 22 described above is sandwiched between the inner side walls in the holder 11 and also by the step portion 11a and the cap 12. , Is stably assembled and held, and is maintained in a state of being integrally assembled with the conductive plate 21.

FIGS. 5 to 7 show another embodiment of the plug-in connector according to the present invention. In the plate-shaped spring member 22 in the above-described embodiment, apart from the tongue piece 24 serving as the wire pressure contact piece, A notch 41 is also formed in the end portion on the side where the hook portion 23 is formed to form a strip shape. Then, every other strip-shaped portion is formed by bending the hook-shaped hooking portion 23, and the remaining strip-shaped portions are formed as extending pieces obliquely downward. It is configured as a second tongue piece 40 that is pressed against.

When such a configuration is adopted, as is clear from FIG. 5, (a) and (b) of FIG. 6 and (a), (b), (c) and (d) of FIG. The second tongue piece 40 obtained by a simple bending process can also obtain the electric wire pressure contact function, and not only can the electric connection with the electric wire peeling portion 2 be performed more reliably, but also this tongue piece formation. The opening for can also be used as an electric wire insertion portion, which has the advantage of simplifying the configuration.

It should be noted that the present invention is not limited to the structure of the embodiment described above, and the shapes and structures of the conductive plate 21 and the plate-shaped spring member 22 forming the conductor 20 can be appropriately modified or changed. Then, various modifications are conceivable as the shape and structure of the holder 11, the cap 12, and the like that form the connector 10, for example.

For example, as shown in FIG. 8, the shape of the plate-shaped spring member 22 is a strip-shaped tongue piece that extends obliquely upward from the hook 23 and has a folded-back portion 25 on the tip side thereof. The shape formed by forming 24 may be sufficient. In this case, the wire insertion hole 26 may be formed in a portion that is inclined obliquely. Further, it goes without saying that such an electric wire insertion hole 26 may be a round hole or a square hole as shown in FIGS. 9A and 9B.

[0036]

[Effect of device]

 As described above, according to the plug-in connector of the present invention, the hook-shaped hook portion is formed by bending at one end and the strip-shaped tongue pieces are formed at the other end side, and the tongue thereof is provided. A plate-shaped spring member whose one portion is bent toward the hook-shaped hooking portion through the folded-back portion, and a whole of which is bent substantially in an L-shape and which has the hook-shaped hooking portion at one end. A conductive plate that is hooked and locked and that has a bent portion that is bent inward to hold and hold the folded portion at the other end is connected to another electric wire. Since it is configured, despite the simple and inexpensive structure, the conductive plate and the plate-shaped spring member that make up the conductor are simplified, and the electrical connection between the wires can be easily performed by a simple bending process and combination work. To obtain a conductor that can Moreover, the tongue of the plate-shaped spring member bites into the stripped portion of the wire with the required pressure contact force, and after obtaining the pressure contact state, the electric wire can be electrically connected with the conductor in the required state, and the electrical connection is made. There are various practically excellent effects that can satisfy the demands of the certainty of the above, and the prevention of the slippage by proper biting.

According to the plug-in connector of the present invention, in addition to the above-described configuration, one end of the plate-shaped spring member is formed in a strip shape, and the hook-shaped hooking portion is formed every other one. In addition, since the rest is configured as a second tongue that is pressed against the stripped portion of the wire, in addition to the above-mentioned advantages, the function of preventing disconnection by electrical connection with the stripped portion of the wire and biting is further enhanced. There is an advantage that it can be surely exhibited.

[Brief description of drawings]

FIG. 1 shows an embodiment of a plug-in connector according to the present invention, in which (a) shows a state in which an electric wire is not inserted, and (b) shows
FIG. 4 is a sectional view of an essential part showing a state in which an electric wire is inserted.

FIG. 2 shows a plate-shaped spring member in a plug-in type connector according to the present invention, (a) is a sectional view of a main part, (b) is a side view thereof, and (c) is a plan view.

3A and 3B show a conductive plate in a plug-in type connector according to the present invention, wherein FIG. 3A is a front view, FIGS. 3B and 3C are side views thereof, and FIG.

FIG. 4 is a schematic exploded perspective view showing a configuration of a main part of a conductive plate and a plate-shaped spring member that constitute a conductor of the plug-in connector according to the present invention.

FIG. 5 is a schematic perspective view of a leaf spring member according to another embodiment of the present invention.

6A and 6B are sectional views showing the overall structure of the plug-in connector according to the embodiment shown in FIG. 5, in which FIG. 6A is a state in which no electric wire is inserted, and FIG. 6B is a sectional view in which essential parts are shown. Is.

7A and 7B show an assembled state of a conductive plate and a plate-shaped spring member in a plug-in connector according to the present invention, wherein FIG. 7A is a schematic front view, FIG. 7B and FIG. Is a schematic plan view.

FIG. 8 is a schematic sectional view showing still another embodiment of the present invention.

FIG. 9 is a schematic perspective view showing a modified example of the present invention in (a) and (b).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire 2 Electric wire peeling part 10 Plug-in connector 11 Holder 12 Cap 13 Insert port 20 Conductor 21 Conductive plate 22 Plate spring member 23 Claw-like hooked part 24 Tongue piece 25 Folded part 26 Wire insertion hole 27 Cut 30 Plate part 31 Plate portion 32 Bent portion 33 Electric wire insertion hole 40 Second tongue piece 41 Notch

Claims (2)

[Scope of utility model registration request] 1. A hook-shaped hooking portion is formed at one end by bending, and a plurality of strip-shaped tongue pieces is formed at the other end side, and these tongue-piece portions are provided with the hook-up portion through the folding-back portion. A plate-shaped spring member bent toward the hook-shaped hooking part, and a plate-shaped spring member entirely bent and formed into a substantially L-shape, and the hook-shaped hooking part of the plate-shaped spring member is hooked and locked at one end. And a conductive plate having a bent portion that is bent inward so as to hold and hold the folded portion of the plate-shaped spring member at the other end, and the other end side of this conductive plate By inserting the peeling part of the electric wire from the plurality of electric wire insertion holes formed in the plate part of the plate, the conductive part is pressed and held between the plate part on the one end side of the conductive plate and the elastically deformed tongue piece. A plug-in connector, characterized in that a conductor for connecting with is configured. 2. The plug-type connector according to claim 1, wherein one end of the plate-shaped spring member is formed into a strip shape, and a hook-shaped hooking portion is formed every other portion, and the rest is formed into a peeling portion of the electric wire. A plug-in connector characterized in that it is configured as a second tongue piece to be pressed against.