JPH0584038U - Plug-in connector - Google Patents

Abstract

(57) [Abstract] [Purpose] The plug is configured so that the electric conductivity of the electric conductor that electrically connects the electric wire to be inserted in the plug-in connector can be maintained. [Structure] A conductor 20 that constitutes the plug-in connector 10 together with the holder 11 is constituted by a conductor plate 21 and a leaf spring 22 attached to the conductor plate 21 for wire pressure contact. The conductive plate 21 includes a first plate portion 23 having a wire insertion hole 23a and a second plate portion 24 which is bent from one edge of the first plate portion 23 in the wire insertion direction.
The bent portion 27 is formed by bending the other end edge of the plate portion. The leaf spring 22 is a fixed piece 3 held by the conductive plate 22.
0, the bent portion 31, and the inclined bent portion 3 having the pressure contact piece 33
It is formed by bending with 2. The bent piece of the leaf spring is locked and held by the locking portion provided on the second plate portion, and the base end portion 32a of the inclined bent portion is held and held by the bent portion of the conductive plate.

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 heat-resistant insulating material. Have With such a plug-in connector, anyone can easily perform the wiring work by peeling off the coating on the wire connection end to be connected and simply inserting the peeled part from the insertion port of the holder. For example, those having various structures have been conventionally known, including Japanese Utility Model Publication No. 1-2228.

[0003]

[Problems to be solved by the device]

 By the way, one of the requirements for the above-mentioned plug-in connector is that the peeling part, which is the wire connection end, can be easily inserted into the holder, and the plug can be securely prevented from coming out after it is inserted. In addition, there is a pressure contact structure by the conductor of the wire that can secure a contact area by the pressure contact at the peeling end of the wire with the conductor in this state and make an electrical connection with high reliability.

That is, as such a conductor, conventionally, a conductor formed of a copper material or the like and a leaf spring having a spring piece for pressing the peeled portion of the electric wire against the conductor plate has been used. There is. However, in the case of the conventionally known conductors, it is easy to insert the wire peeling part to be inserted, the accuracy of the electrical connection by securing the contact area and contact pressure, and the removal of the inserted wire peeling part. Nothing that can satisfy both prevention measures has been proposed yet.

In particular, when fixing the base end portion of the leaf spring to the above-described conductive plate, generally, a plurality of wire insertion holes are formed in one plate portion of the conductive plate that is bent and formed to have, for example, an L shape. The base end of the leaf spring is fixed by piercing and providing a caulking piece on the outer edge side of the leaf spring, and inserting the protrusion provided on a part of it through the hole formed in the leaf spring side and caulking these. Often fixed to the conductive plate by caulking.

However, in the case of a conductor made of a conductive plate and a leaf spring by such caulking, an electric wire is inserted into the electric wire insertion hole of the conductive plate, and a leaf spring is press-contacted to the insertion end side of the electric 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 with the wire insertion hole and the caulking part are deformed in the direction in which the tip of the leaf spring separates from the wire and reduces the pressure contact force, resulting in electrical conductivity. It deteriorated.

Further, in such a conventional conductor, the tip end side of the leaf spring is easily lifted up from the conductive plate depending on the crimping state of the fixed portion by crimping, whereby the leaf spring and the electric wire receiving portion of the conductive plate are The gap between them becomes 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.

Further, the angle formed between the conductive plate and the tip side of the leaf spring caulked and fixed to the conductive plate in this manner is an important point for easy insertion of the wire and reliable prevention of the wire from coming off. is there. That is, if the angle between the conductive plate that constitutes the conductor and the spring piece is set to a small value 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, and If the above-mentioned angle is set to a large value so that the spring piece can be bited into the wire well and that it can be reliably prevented from slipping out, the wire is inserted between the conductive plate that constitutes the conductor and the spring piece. However, the contact area cannot be secured and the electrical connection performance is impaired, and it is desirable to take some measures that can satisfy both of these requirements.

[0009]

[Means for Solving the Problems]

 In order to meet such a demand, the plug-in connector according to the present invention is a conductive connector for connecting with another wire by pressing and holding the peeled part of the wire which is arranged in the holder and inserted from the wire insertion hole. A first plate part having a plurality of wire insertion holes formed side by side in the lateral direction, a second plate part formed by bending one end edge of the body toward the wire insertion direction, and the first plate. A conductive plate composed of a bent portion bent from the other edge of the portion in the wire insertion direction, and held by the first plate portion, the second plate portion and the bent portion, and held in the wire insertion hole. The leaf spring is composed of a fixing piece having corresponding holes, a bent portion, and a plate spring bent and formed on an inclined bent portion having a plurality of pressure contact pieces pressed against the wire peeling portion. Locks and holds the bent piece with the locking part provided on the second plate part Causes the inclined bent portion proximal end portion of the plate spring, which is constituted so as to hold in a state of racking the bent portion of the conductive plate.

[0010]

[Action]

 According to the present invention, a bent plate formed of a fixed piece, a bent piece, and a pressure contact piece is used, unlike a bent conductive plate formed of a first plate section, a second plate section, and a bent section. The spring is fitted and retained from the side orthogonal to the wire insertion direction to integrally assemble them, so that both the conductive plate and the leaf spring that make up the conductor have strength, and By the combination, it is possible to secure the strength capable of eliminating the problem of the deterioration of the electrical conductivity of the conventional conductor including the conductive plate and the leaf spring crimped thereto.

[0011]

【Example】

 1 to 5 show one 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. In addition, as these electric wires 1, generally, single-core electric wires are used, and the insertion end of each of them into the connector, which is a connection end, is formed by peeling the insulating coating 1a, as is well known. It is prepared as the peeling unit 2.

The plug-in type connector indicated by reference numeral 10 as a whole has a heat-resistant insulating property so as to have a substantially housing shape, as is clear from FIGS. 4 and 5 (a), (b), (c) and the like. The holder 11 is made of a synthetic resin material having a heat-resistant insulating material and has the same heat-resistant insulation as the holder 11 so as to close the opening end of the holder 11 on the wire insertion end side. The cap 12 is provided with three electric wire insertion ports 13 into which the peeling portion 2 of the electric wire 1 is 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 can be easily inserted.

Further, reference numeral 16 in the drawing is formed by a substantially U-shaped cut formed on one side surface of the holder 11 and is extended in the inserting direction in correspondence with each wire peeling portion 2 inserted into the holder 11 and is elastic. A deformable piece for recognizing the state of inserting an electric wire. The tip of each piece of the recognition piece 16 is engaged with the tip of the electric wire separating portion 2 which is electrically connected by being pressed and held by the conductor 20 inside the holder 11. An engagement portion 16a that elastically deforms the recognition piece 16 to the outside of the holder 11 is provided. By doing so, when the electric wire peeling portion 2 is inserted into the holder 11 through the insertion port 13 and is pressed and held by the conductor 20, as is clear from the state shown in FIG. 5 (a) and FIG. The tip of the peeling portion 2 of the electric wire 1 engages with the engaging portion 16a on the tip end side of the recognition piece 16, and the recognition piece 16 is elastically deformed toward the outside of the holder 11 to be visually or fingertiply visible from the outside of the holder 11. You can check the insertion with etc.

Reference numeral 20 denotes an inner 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). This conductor 20 is an electrical conductor for electrical connection, and this conductor 20 is also apparent from FIGS. 1 and 2 (a), (b) and (c) and FIGS. 3 (a), (b) and (c). As described above, the conductive plate 21 formed by bending a conductive plate material such as a tin plate or the like into a required shape and the conductive plate 21 integrally attached to and held by a part of the conductive plate 21. And a leaf spring 22 for holding the electric wire peeling portion 2 in pressure contact with the electric wire and holding the electric wire peeling portion 2 to electrically connect to another electric wire.

According to the present invention, the above-mentioned conductive plate 21 is composed of a plurality of (three) (a), (b), (c) in FIGS. 1 and 2, and further as is apparent from FIG. Individual) wire insertion holes 23a are arranged in the left-right direction and extend in the holder 11 in the wire insertion direction from a first plate portion 23 arranged orthogonally to the wire insertion direction. The second plate portion 24 that is bent and formed as described above, and the second plate portion 24 that functions as an electric wire receiving portion that is folded back from the tip of the second plate portion 24 to the electric wire peeling portion 2 side and contacts the electric wire peeling portion 2 The groove portion 26 is formed between the bent portion 25 and the plate portion 24, and the folded portion 25 serves as a locking portion that locks and holds the bent portion of the leaf spring 22 described later, and the electric wire from the other end of the first plate portion 23 to the electric wire. It is composed of a bent portion 27 that is bent and formed on the peeling portion 2 side.

Here, the tip portion 27 a of the bent portion 27 described above is made to match the bending shape of the pressure contact piece 33 (described later) on the side of the leaf spring 22 that elastically deforms when the wire peeling portion 2 is inserted. It is formed in a shape so that the pressure contact piece 33 can be pressed against the wire peeling portion 2 side with a predetermined pressure contact force. Reference numeral 28 in the drawing denotes a reinforcing rib formed by stamping on the first plate portion 23 along the vertical direction.

On the other hand, the leaf spring 22 integrally assembled with the conductive plate 21 having such a shape is apparent from FIGS. 1 and 3 (a), (b) and (c), and further from FIG. As described above, the conductive plate 21 is arranged in parallel with the electric wire insertion side of the first plate portion 23, and the upper and lower edge portions thereof are held between the bent portion with the second plate portion 24 and the bent portion 27. The fixing piece 30 having a hole portion 30a corresponding to the wire insertion hole 23a, and the bent portion 25 which is bent from the lower end thereof and extends parallel to the second plate portion 24 of the conductive plate. Between the bent piece 31 fitted and held in the groove portion 26 between the fixed piece 30 and the bent piece 31 extending obliquely from the upper edge of the fixed piece 30 toward the bent piece 31 side, the base end portion 32a thereof is connected to the conductive plate 21. It is locked and held by the bent portion 27 and is inserted into each wire insertion hole 23a. It is composed of an inclined bent piece 32 having a press contact piece 33 pressed against the electric wire peeling portion 2.

That is, as is apparent from FIG. 1 and the like, the leaf spring 22 has a substantially triangular shape in a side view, and is held by the conductive plate 21 formed in a shape to hold it. Since the base end portion 32a of the inclined bending piece 32 that constitutes the pressure contact piece 33 to 2 is held and held by being held by the bent portion 27 of the conductive plate 21, compared to the conventional fixing structure by caulking. Deformation that is likely to occur due to the acting force due to the insertion of the peeling portion 2 is prevented, and the pressure contact piece 33 is always in pressure contact with the wire peeling portion 2 with a required strength, so that electrical conductivity can be maintained. Reference numeral 34 in the drawing is a slit that divides the inclined bent piece 32 into pressure contact pieces 33.

Therefore, according to the above-described configuration, the conductive plate 21 bent to have the first plate portion 23, the second plate portion 24, the folded portion 25, and the bent portion 27 is provided. The leaf spring 22, which is bent to have the fixing piece 30, the bending piece 31, and the pressure contact piece 33, is fitted and held in the conductive plate 21 from the side orthogonal to the wire insertion direction. The leaf springs 22 are held together to assemble them together, and both the conductor plate 21 and the leaf springs 22 constituting the conductor 20 are made to have strength, and the sum of these makes the conventional conductor plate and that It is possible to secure the strength capable of eliminating the problem of the deterioration of the electrical conductivity of the conductor composed of the leaf springs that are crimped.

Further, in such a configuration, the fixing piece 30 portion of the leaf spring 22 is arranged along the first plate portion 23 of the conductive plate 21, and the upper and lower ends thereof are provided at the second plate portion 24. The pressure contact piece 33, which is pressed and held by the bent portion and the bent portion 27, and whose base end portion 32a is held by the bent portion 27, is prevented from being deformed by an external force caused by inserting the wire peeling portion 2. Therefore, it is possible to meet the demands of reliable electrical connection and prevention of disconnection by proper bite.

It should be noted that the present invention is not limited to the structure of the above-described embodiment, and the shape and structure of each part can be appropriately modified and changed. For example, the holder 11 and the cap 12 forming the connector 10 can be modified. Various modifications are conceivable as the shape and structure. Further, in the above-described embodiment, the bent portion 31 of the leaf spring 22 is provided along the second plate portion 24 of the conductive plate 21, and is retained in the groove portion 26 by the folded portion 25. However, the present invention is not limited to this, and an appropriate locking portion may be provided on the second plate portion 24, and the second plate portion 24 may be configured to be locked and held by the locking portion.

[0023]

[Effect of the device]

 As described above, according to the plug-in connector of the present invention, a plurality of electric conductors are provided, which are arranged in the holder and hold the electric wire peeling portion inserted from the electric wire insertion hole by pressing and holding the electric wire peeling portion. From the first plate portion in which the insertion holes are formed side by side in the lateral direction and the second plate portion bent from one end edge thereof toward the wire insertion direction, and the other end edge of the first plate portion Fixed with a conductive plate consisting of a bent portion that is bent and formed in the wire insertion direction, and a hole portion that is held and held by the first plate portion, the second plate portion, and the bent portion and that corresponds to the wire insertion hole And a bent portion, and a leaf spring bent and formed on an inclined bent portion having a plurality of pressure-contacting pieces pressed against the wire peeling portion, and the bent piece of the leaf spring is The locking part provided on the second plate part holds and holds this Since the base end portion of the inclined bent portion of the spring is held by being held by the bent portion of the conductive plate, the conductive plate that constitutes the conductor can be formed despite the simple and inexpensive structure. Both the plate spring and the leaf spring are made to have strength, and the combination of these eliminates the problem of the deterioration of the electrical conductivity of the conductor due to the conventional conductive plate and the plate spring crimped thereto. There are various practically excellent effects that the electric connection of the electric wire can be performed in a required state, and the requirements for the reliability of the electric connection and the prevention of disconnection by an appropriate bite can be satisfied.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing, in an enlarged manner, a conductive plate and a conductor made of a leaf spring, showing an embodiment of a plug-in connector according to the present invention.

2 shows the conductive plate in FIG. 1, (a) is a sectional view,
(b), (c) are the left and right side views.

FIG. 3 shows the leaf spring in FIG. 1, (a) is a sectional view,
(b), (c) are the left and right side views.

FIG. 4 is a sectional view of an essential part showing a state in which an electric wire is inserted in the plug-in connector according to the present invention.

5A and 5B show a normal state in which an electric wire is not inserted in the plug-in connector according to the present invention, FIG. 5A is a sectional view of a main part, FIG. 5B is a schematic plan view thereof, and FIG. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 electric wire 1a coating 2 electric wire peeling part 10 insertion type connector 11 holder 12 cap 13 insertion port 20 electric conductor 21 conductive plate 22 plate spring 23 first plate part 23a electric wire insertion hole 24 second plate part 25 folded part 26 groove part 27 Bending part 30 Fixing piece 30a Hole part 31 Bending piece 32 Inclined bending piece 32a Base end part 33 Pressure contact piece

Claims (1)

[Scope of utility model registration request] 1. A plug for connecting another wire by holding a peeled portion of the wire inserted from the wire insertion hole by a plate spring and a conductive plate that constitutes a conductor arranged in a holder. In the mold connector, the conductive plate includes a first plate portion in which a plurality of wire insertion holes are formed side by side in a lateral direction, and a second plate bent from one end edge thereof toward the wire insertion direction. And a bent portion that is bent and formed in the wire insertion direction from the other end edge of the first plate portion, and the leaf spring includes a first plate portion and a second plate portion of the conductive plate. In order to be held and held by the bent portion, a fixed piece having a hole portion corresponding to the wire insertion hole, a bent portion, and an inclined bent portion having a plurality of pressure contact pieces pressed against the wire peeling portion are provided. The leaf spring is bent and formed, and the bent piece of the leaf spring is the second piece. It is characterized in that it is retained by a retaining portion provided on the plate portion, and the inclined bent portion of this leaf spring is held in a state that its base end portion is held by the bent portion of the conductive plate. Plug-in type connector.