JPH0584039U - Plug-in connector - Google Patents

Abstract

(57) [Abstract] [Purpose] A plug-in connector that connects a wire to a holder to make an electrical connection with another wire so that the insertion status of the wire can be reliably recognized and determined. [Structure] A plug-in connector 10 is composed of a holder 11 made of a heat-resistant insulating synthetic resin material and a conductor 20 which holds an electric wire peeling portion 2 inside by pressure and holds the electric wire peeling portion 2 for electrical connection with another electric wire. A wire insertion state recognizing piece 40 in which the wire peeling portion electrically connected to the conductor is engaged and swung at a position corresponding to each wire peeling portion on the tip end side in the holder 11.
Are arranged so as to be substantially orthogonal to the wire insertion direction. A window 41 is formed in a part of the side surface of the holder so that the movement of the swinging end 40b of each of the recognition pieces can be confirmed from the outside of the holder.

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 are conventionally known, including, for example, Japanese Utility Model Publication No. 1-222828 and Japanese Utility Model Publication No. 1-29738.

[0003]

[Problems to be solved by the device]

 By the way, one of the requirements for the above-mentioned plug-in type connector is to make it possible to recognize and determine whether or not the connection by inserting the wire connection end into the holder is made securely. Sometimes.

That is, if the electric wire is not sufficiently inserted into the connector, not only the required certainty of the connection between the electric wires is impaired, but also a contact failure is likely to occur, which causes heat generation. There is also a risk of causing a fire accident. For this reason, in order to prevent such insertion errors, the connector holder has been made of a transparent synthetic resin material so that the connection status of the wires inside the holder can be visually confirmed. However, the transparent synthetic resin material is expensive, and it is desirable to form the holder with an opaque material if possible.

Further, as a work site for connecting electric wires using the above-mentioned plug-in connector, there are many dark places where illumination is generally insufficient, such as indoor ceilings. In many cases, the work of inserting electric wires in the field like this is done by groping, and even if the holder is made of the transparent synthetic resin material described above, the connection status of the electric wires inside the holder can be accurately measured. In some cases, it may be difficult to recognize, discriminate, and grasp, and it is desirable to take some measures to eliminate the above-mentioned problems in consideration of such points.

[0006]

[Means for Solving the Problems]

 In order to meet such demands, the plug-in connector according to the present invention is a conductor for performing electrical connection between electric wires by sandwiching the electric wire peeling portion between the electric conductive plate and the spring piece so as to hold the electric wire. The inside of the holder is made of a synthetic resin material with heat-resistant insulation so that it has a substantially housing shape. Inside the holder, the conductor is pressed and held at a position corresponding to each wire peeling part on the tip side of the wire insertion direction. The electrically connected wire stripping part is engaged to engage with the tip of the wire stripping part, and the wire insertion state recognition piece is placed in a state of being substantially orthogonal to the wire insertion direction. A window is formed in a part of the side surface of the holder so that the movement of the swinging end of the can be confirmed from outside the holder.

[0007]

[Action]

 According to the present invention, the coating at the insertion end of the wire to be connected is peeled off, the peeled part is inserted from the insertion port of the holder, and the conductor inside the holder presses it to hold it in place. When the inserted wire is pressed and held by the conductor, the tip of the peeling part of the wire engages with the corresponding recognition piece, and the recognition piece is inserted. By swinging in the direction, and confirming the swinging displacement state of this recognition piece from the outside of the holder through the window visually or with your fingertips, etc., make sure to confirm the insertion inside the holder as necessary. I can do it.

[0008]

【Example】

 1 to 7 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. 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.

As is clear from FIGS. 1 to 3, the plug-in connector, generally designated by reference numeral 10, has a holder 11 formed of a synthetic resin material having a heat insulating property so as to have a substantially housing shape. The holder 12 includes a cap 12 formed of a synthetic resin material having heat-resistant insulation similarly to the holder 11 so as to close the opening end of the holder 11 that is open to the wire insertion end side. Three electric wire insertion ports 13 are formed into which the peeling portions 2 of the electric wires 1 are appropriately inserted.

It should be noted that the cap 12 is integrally formed by being locked by an appropriate retaining means 15 while being fitted into the opening end of the holder 11. Further, the electric wire insertion port 13 formed in the cap 12 has a large diameter on the outer end side, and has a shape such that the electric wire 1 can be easily inserted.

Numeral 20 is arranged in 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). This conductor 20 is an electrical conductor for electrical connection, and this conductor 20 is apparent from FIGS. 4 and 5 (a), (b) and (c) and FIG. 6 (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.

Here, in the present embodiment, the conductive plate 21 described above has a plurality of (three) wire insertions, as is clear from FIGS. 4 and 5 (a), (b), (c) and the like. The first plate portion 23, in which the holes 23a are arranged in the left-right direction and arranged orthogonally to the electric wire inserting direction in the holder 11, and is bent so as to extend from the lower end edge thereof in the electric wire inserting direction. The formed second plate portion 24 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 A groove portion 26 is formed between the bent portion 25 and the bent portion 25 which serves as a locking portion for locking and holding a bent portion of the leaf spring 22 described later, and the other end of the first plate portion 23 from the wire peeling portion 2 side. It is composed of a bent portion 27 formed by bending.

Here, the tip end portion 27a of the bent portion 27 described above is made to conform to 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 that is integrally assembled to the conductive plate 21 having such a shape has the conductivity as shown in FIGS. 4 and 5 (a), (b), (c). The plate 21 is arranged parallel to the wire insertion side of the first plate portion 23, and upper and lower edge portions thereof are held between the bent portion with the second plate portion 24 and the bent portion 27. Between the fixing piece 30 having a hole portion 30a corresponding to the wire insertion hole 23a and the folded portion 25 which is formed by bending from the lower end edge thereof and extends parallel to the second plate portion 24 of the conductive plate. The bent piece 31 fitted and held in the groove portion 26 and the fixed piece 30 extend obliquely from the upper edge of the fixed piece 30 toward the bent piece 31 side, and the base end portion 32a thereof is bent to the bent portion 27 of the conductive plate 21. To the wire peeling portion 2 that is locked and retained and is inserted into each wire insertion hole 23a. It is composed of an inclined bent piece 32 having a press contact piece 33 to be pressed.

That is, as is apparent from FIG. 4 and the like, the leaf spring 22 has a substantially triangular shape in a side view, and is held by a 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. In addition, in FIG. 6C, reference numeral 34 is a slit that divides the inclined bent piece 32 into pressure contact pieces 33.

According to the above-mentioned configuration, the first plate portion 23, the second plate portion 24, the folded portion 25 and the bent portion 27 are fixed to the conductive plate 21 that is bent and formed. The leaf spring 22 formed by bending to have the piece 30, the bent piece 31, and the press contact piece 33 is fitted and held from the side orthogonal to the electric wire insertion direction, so that the conductive plate 21 is provided with the plate spring 22. The spring 22 is held together and both are integrally assembled, and both the conductive plate 21 and the plate spring 22 constituting the conductor 20 have strength, and the sum of these gives the conventional conductive plate and the conventional conductive plate. It is possible to secure the strength that can eliminate the problem of the deterioration of the electrical conductivity of the conductor composed of the crimped leaf spring.

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 arranged 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. This makes it possible to ensure the electrical connection and prevent it from coming off by an appropriate bite.

According to the present invention, in the plug-in connector 10 having the above-described structure, the electric conductor is provided in the holder 11 at a position corresponding to each wire peeling portion 2 on the tip side of the wire 1 in the insertion direction. A wire insertion state recognizing piece 40, which is oscillated by being engaged with the tip of the wire peeling portion 2 that is pressed and held electrically at 20 and is electrically connected, is arranged substantially orthogonal to the wire insertion direction. A window portion 41 for confirming the movement of the swinging end portion of each recognition piece 40 from the outside of the holder 11 is formed in a part of the side surface portion of the holder 11.

Here, the above-described recognition piece 40 is integrally formed with the holder 11 at the inner tip side portion of the holder 11 at one end through a thin hinge portion 40a, and the swinging end 40b is always shown in FIG. As is clear from (a), (b), and (c) of FIG. 7, when the wire stripping portion 2 is engaged, it is swayed when the wire stripping portion 2 is engaged in the holder 11 while being inclined. As is apparent from FIGS. 1 and 2 (a), the end 40b oscillates in the direction of inserting the electric wire, and this oscillating operation state can be visually confirmed from outside the holder 11 or by a fingertip or the like. ing.

For example, the visual confirmation is performed by confirming the position of the swinging end 40b of the recognition piece 40 in the window portion 41, or the protrusion visible from the window portion 41 by this swinging end 40b or its swinging operation. This can be done by coloring the portion 42 (described later) with a color different from the appearance of the holder 11. Further, the confirmation with the fingertip may be performed by touching the swinging end 40b of the recognition piece 40 such that the swinging end 40b slightly protrudes from the window 41 to the outside of the holder 11 when swinging. Of course, other than this, various appropriate confirmation means can be considered.

Reference numeral 42 denotes a projection portion that is provided near the swing end of the recognition piece 40 and projects toward the wire insertion port 13 side. 3 is a portion that performs a weight function for positioning the holder 11 in the window 41 of the holder 11 in an inclined state and a function as a locking portion for preventing the recognition piece 40 from falling off the holder 11. is there.

According to this structure, the coating at the insertion end of the electric wire 1 to be connected is peeled off, the peeled portion 2 is inserted from the insertion port 13 of the holder 11, and the conductor 20 provided inside the holder 11 is removed. When the electric wire 20 is pressed and held by the conductor 20, the electric wire 20 can be electrically connected to another electric wire 1 by pressing and holding the electric wire with the electric wire 20. As is apparent from the state of FIG. 2, the tip of the wire peeling portion 2 engages with the corresponding recognition piece 40, and the recognition piece 40 is oscillated in the inserting direction of the electric wire 1. By confirming the swinging displacement state from the outside of the holder 11 through the window portion 41 visually or with a fingertip, the insertion inside the holder 11 can be surely confirmed as necessary.

That is, as a reliable insertion state of the wire stripping portion 2 into the connector 10, as is apparent from FIG. 1, the tip of the wire stripping portion 2 is inserted up to the foremost end in the insertion direction of the holder 11. It is necessary. For this reason, the recognition piece 40 that can be engaged at a position where it can be confirmed that it has been inserted into this portion is provided in the holder 11 so as to be capable of swinging movement, and the operation state can be visually or externally viewed from the outside of the holder 11. It is configured so that it can be checked more easily by touching it with something like.

As is apparent from FIGS. 7A, 7B and 7C, the oscillating end 40b of the recognition piece 40 as described above is located substantially in the center of the window portion 41. In this state, it can be easily and properly molded by integrally molding the resin together with the holder 11. Moreover, as shown in FIGS. 1 and 3, the wire peeling portion 2 swings when engaged or disengaged. Getting things done is extremely easy.

FIG. 8 shows another embodiment of the present invention. In this embodiment, the recognition piece 40 is molded separately from the holder 11, and is assembled and arranged in the holder 11 in a required state. Shows the case. Here, reference numeral 44 in the drawing denotes a holding portion that can swing the base end portion 40c of the recognition piece 40 and that prevents the positional displacement in the holder 11 and locks and holds it. It is needless to say that the same action and effect can be obtained even in the case of the locking and holding part. With such a separate structure, the swinging operation state of the recognition piece 40 can be confirmed by rattling noise caused by shaking the plug-in connector 10 in addition to the embodiment described above. ..

It should be noted that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part can be appropriately modified or changed. For example, the conductor 20 provided in the holder 11 according to the present invention is not limited to the one having the structure of the embodiment described above, and various modified examples are conceivable. The point is that the peeling portion 2 of the electric wire 1 is inserted so that the electric wire structure can be electrically connected to the conductive plate by pressing and holding the electric wire 1 with the spring piece.

[0027]

[Effect of the device]

 As described above, according to the plug-in connector of the present invention, a synthetic resin material having heat resistance and insulation is provided in which a conductor for electrically connecting the wires by inserting the wire peeling portion is provided. The inside of the holder, which is formed into a substantially housing shape, engages the tip of the wire peeling part that is electrically connected by being pressed and held by a conductor at a position corresponding to each wire peeling part on the tip side of the wire insertion direction in the holder. By arranging the wire insertion state recognition piece that is rocked by this, it is arranged almost orthogonal to the wire insertion direction, and a window part that can confirm the movement of the rocking end of each recognition piece from the outside of the holder is installed. Since it is formed on a part of the side surface of the holder, despite the simple and inexpensive structure, the wire peeling part can be inserted from the insertion hole of the holder and held by pressing with a conductor so that other Can make electrical connection with electric wires When the inserted wire is pressed and clamped by the conductor instead of the scale, the tip of the peeling part of the wire engages with the recognition piece and swings the recognition piece in the holder in the wire insertion direction. By operating it, the deformed state of the recognition piece can be checked visually from the outside of the holder through the window or with your fingertips, etc., so that you can easily and easily check the wire insertion status inside the holder. It has a practically excellent effect that it can be reliably performed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of a plug-in connector according to an embodiment of the present invention with an electric wire inserted therein.

FIG. 2 shows an external view of the plug connector in FIG.
(a) is a plan view and (b) is an end view thereof.

FIG. 3 is a cross-sectional view of an essential part showing a normal state in which an electric wire is not inserted in the plug-in connector according to the present invention.

FIG. 4 is an enlarged cross-sectional view of an essential part of a conductor illustrated in the present invention.

5 shows a conductive plate in the conductor shown in FIG.
(a) is a sectional view, and (b) and (c) are left and right side views thereof.

6 shows a leaf spring in the conductor shown in FIG. 4,
(a) is a sectional view, and (b) and (c) are left and right side views thereof.

7A and 7B show an embodiment of a holder that characterizes the plug-in connector according to the present invention, in which FIG. 7A is a schematic plan view, FIG. 7B is a sectional view of a main part, and FIG.

FIG. 8 is a cross-sectional view of an essential part of a plug-in connector according to another embodiment of the present invention in a normal state in which an electric wire is not inserted.

[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 spring piece 23a electric wire insertion hole 40 recognition piece 40a hinge part 40b swinging end 40c base end part 41 window part 42 Protrusion 44 Holding part

Claims (1)

[Scope of utility model registration request] 1. An electric wire which is inserted by an electric conductor disposed in a holder formed of a synthetic resin material having a heat-resistant insulation property so as to have a substantially housing shape, and presses and holds the peeled portion of the electric wire to another electric wire. In a plug-in connector for connection with a cable, a conductor is pressed and held by a conductor in the holder at a position corresponding to each wire peeling portion inserted in the holder on the tip side in the wire inserting direction inside the holder to electrically connect. The wire insertion state recognition piece that is rocked when the tip of the wire peeling part connected to is engaged is arranged in a state substantially orthogonal to the wire insertion direction, and the rocking end portions of these recognition pieces are A plug-in connector, characterized in that a window portion for confirming movement from the outside of the holder is formed in a part of a side surface portion of the holder.