JP2010218792A - Plug-in electric-wire connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plug-in electric-wire connector capable of improving operability for insertion. <P>SOLUTION: The plug-in electric-wire connector 11 includes a spring piece 23, an electric-wire conductor 26 to make each of a plurality of electric wires 12 conductive, and a case member 16 to house these members. The connector 11 has a structure to press the electric wire 12 to the electric-wire conductor 26 by means of the spring piece 23, when the electric wire 12 is inserted between the spring piece 23 and the electric-wire conductor 26. Further, the connector 11 has a spring-piece push-up member 15 housed in the case member 16 together with the spring piece 23 and the electric-wire conductor 26. The spring-piece push-up member 15 is interposed between the end of the spring piece 23 and the electric-wire conductor 26 before the electric wire 12 is inserted, and is so formed in substantially U-shape in a side view as to be dented to the position of the connector deeper than the spring piece 23. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a plug-in type electric wire connector mainly used as a connection member of a residential indoor wiring cable.

  In FIG. 7, the conventional plug-type electric wire connector includes a pair of spring pieces 1, an electric wire conducting portion 3 that conducts two electric wires 2, and a case member (not shown) that accommodates them. (See, for example, Patent Document 1 below). The plug-type electric wire connector is configured such that when the conductor 4 of the electric wire 2 is inserted between the spring piece 1 and the electric wire conducting portion 3, the conductor 4 can be pressed against the electric wire conducting portion 3 by the spring piece 1. . Further, the conductor 4 can be retained and locked by the tip of the spring piece 1.

JP 2001-176576 A

  By the way, in the said prior art, until the connection is completed after the conductor 4 of the electric wire 2 contacts the spring piece 1, in other words, the conductor 4 of the electric wire 2 to a predetermined position inside the plug-in type electric wire connector. Until the conductor is inserted, the conductor 4 continues to receive the reaction force of the spring piece 1. Therefore, the operator must insert the electric wire 2 while continuing to apply a relatively large force, and cannot easily be inserted, which has a problem of affecting workability. . In addition, it is known that the electric wire insertion force is large as one of the causes of the insertion failure.

  This invention is made | formed in view of an above-described situation, and makes it a subject to provide the plug-in type electric wire connector which can aim at the improvement of the workability | operativity which concerns on insertion.

  The plug-in type electric wire connector according to the first aspect of the present invention, which has been made to solve the above-mentioned problems, includes a spring piece, an electric wire conducting portion that conducts conductors of a plurality of electric wires, and a case member that accommodates these. In the plug-type electric wire connector having a structure in which the conductor of the electric wire is pressed against the electric wire conducting portion by the spring piece when the electric wire conductor is inserted between the spring piece and the electric wire conducting portion. And a spring piece push-up member housed in the case member together with the electric wire conducting portion, and the spring piece push-up member deflects the spring piece and pushes it up before inserting the conductor of the electric wire in advance. A shape in which the distance between the tip of the spring piece and the electric wire conducting portion can be widened, and a shape that allows insertion of the conductor of the electric wire to a deeper position than the spring piece in the pushed-up state of the spring piece And it is characterized in that release of the push-up state of a predetermined length amount corresponding pushed to as the spring piece conductor tip of the wire is formed into a shape, to be made.

  According to the present invention having such characteristics, the electric wire is inserted without receiving a reaction force from the spring piece until the tip of the electric wire comes into contact with the spring piece push-up member. The tip of the wire contacts the spring piece push-up member when the conductor is inserted deeper than the spring piece, so that the length from the spring piece is the same as the length inserted deeper than the spring piece. The electric wire can be inserted without receiving a reaction force.

  The plug-in type electric wire connector according to a second aspect of the present invention is the plug-in type electric wire connector according to the first aspect, wherein the spring piece push-up member is in a state until the push-up state of the spring piece is released. It has the interposition part interposed between a spring piece and the conductor of the said electric wire, It is characterized by the above-mentioned.

  According to the present invention having such a feature, when the pushed-up state of the spring piece is released, the spring piece collides with the conductor of the electric wire. At this time, for example, a snapping sound is generated, so that it is possible for the operator to know audibly that the electric wire is being inserted. The magnitude of the impact sound may be adjusted by adjusting the thickness of the interposition part.

  The plug-in type electric wire connector according to claim 3 of the present invention is the plug-in type electric wire connector according to claim 1 or 2, wherein the case member is a movement that regulates a push-in movement amount of the spring piece push-up member. It has a quantity regulation part.

  According to the present invention having such a feature, the spring piece push-up member pushed in by the electric wire stops at a predetermined position inside the connector, that is, the position of the movement amount regulating portion. The spring piece push-up member is fixed in a state where the spring piece push-up member is pressed against the movement amount regulating portion by the electric wire.

  According to a fourth aspect of the present invention, there is provided the plug-in type electric wire connector according to the third aspect, wherein the case member is a resin part that is partially or entirely transparent.

  According to the present invention having such a feature, the state in which the conductor of the electric wire is pressed by the spring piece or the state in which the electric conductor of the electric wire is inserted to a predetermined position inside the connector is visually shown to the operator. It becomes possible to understand.

  According to the present invention described in claim 1, since the spring piece push-up member is provided, there is an effect that the range of receiving the reaction force from the spring piece at the time of inserting the electric wire can be made shorter than before. Therefore, there is an effect that workability can be improved. Further, the provision of the spring piece push-up member also brings about an effect that the insertion trouble can be reduced.

  According to the second aspect of the present invention, there is an effect that the operator can be audibly informed that the insertion of the electric wire is performed reliably. Therefore, there is an effect that insertion trouble can be reduced.

  According to the third aspect of the present invention, since the pushing movement amount of the spring piece push-up member is regulated, if the push-in is pushed until the spring piece push-up member stops, the electric wire is inserted to a predetermined position inside the connector. There is an effect that can be. Therefore, there is an effect that insertion trouble can be reduced. Moreover, according to this invention, there exists an effect that a spring piece raising member can be inserted | pinched between an electric wire and a movement amount control part, and this can be fixed. Therefore, there is an effect that the position of the spring piece push-up member inside the connector can be stabilized.

  According to the present invention described in claim 4, there is an effect that the operator can visually recognize the insertion state of the electric wire and the like. Therefore, there is an effect that insertion trouble can be reduced.

It is a figure which shows the insertion type electric wire connector of this invention, (a) is sectional drawing which shows the middle state of electric wire insertion work, (b) is sectional drawing which shows the completion state of electric wire insertion work. It is a figure which shows an insertion type electric wire connector, (a) is a perspective view which shows the state before performing an electric wire insertion operation | work, (b) is sectional drawing of (a) (For convenience, the part accommodated in the case main body is demonstrated. , Indicated by a solid line). It is a figure of each structural member of an insertion type electric wire connector, (a) is a perspective view of a spring member, (b) is a perspective view of an electric wire conduction member, (c) A perspective view of a spring piece pushing-up member, (d) is a perspective view. It is a perspective view of a case member (the part accommodated in the case main body is shown as a continuous line for convenience). It is sectional drawing which shows the middle state of an electric wire insertion operation | work. It is sectional drawing which shows the completion state of an electric wire insertion operation | work. It is explanatory drawing which concerns on the range which receives the reaction force from a spring piece, (a) is sectional drawing which shows the middle state of electric wire insertion work, (b) is sectional drawing of a comparative example. It is a perspective view which shows the principal part of the plug-in type electric wire connector of a prior art example.

  The plug-in type electric wire connector includes a spring piece, an electric wire conducting portion that conducts the conductors of a plurality of electric wires, and a case member that accommodates these. The insertion-type electric wire connector has a structure in which when the conductor of the electric wire is inserted between the spring piece and the electric wire conducting portion, the electric wire conductor is pressed against the electric wire conducting portion by the spring piece. The plug-in type electric wire connector further includes a spring piece push-up member that is accommodated in the case member together with the spring piece and the electric wire conducting portion. The spring piece push-up member is interposed between the tip of the spring piece and the electric wire conducting portion before the electric wire is inserted. The spring piece push-up member is formed in a substantially U-shape in side view that is recessed from the spring piece to the connector deep position.

  Hereinafter, embodiments will be described with reference to the drawings. 1 and 2 are views showing the plug-in type electric wire connector of the present invention. FIG. 3 is a diagram of each component of the plug-in type electric wire connector. Further, FIG. 4 is a cross-sectional view showing an intermediate state of the electric wire insertion work, FIG. 5 is a cross-sectional view showing a completed state of the electric wire insertion work, and FIG.

  1 and 2, the plug-in wire connector 11 of the present invention is mainly used as a connection member for a residential indoor wiring cable (referred to as an electric wire 12 in this specification), and includes a spring member 13. And an electric wire conducting member 14, a spring piece push-up member 15, and a case member 16. The plug-in type electric wire connector 11 of the present invention includes a spring piece push-up member 15 so that the workability of inserting the electric wire 12 can be improved as compared with the prior art. First, the above-described constituent members will be described (arrow P is defined as the vertical direction, arrow Q as the front-rear direction, and arrow R as the left-right direction).

  The electric wire 12 includes, for example, a relatively thick single wire conductor 17 (conductor) having a diameter of 1 mm to 2 mm and a covering portion 18 that covers the single wire conductor 17. A known wire is used for the electric wire 12. The electric wire 12 is processed so that the single wire conductor 17 is exposed at a predetermined length at this end.

  1 to 3, the spring member 13 is a metal member having excellent spring characteristics, such as stainless steel, and is formed into a shape as illustrated by punching and bending a metal plate (shape). Is an example). The spring member 13 is formed in a box shape having parallel upper and lower walls 19 and 20 and parallel front and rear walls 21 and 22 (the left and right walls are formed in a shape that does not exist). (See FIG. 3 (a)).

  A pair of spring pieces 23 arranged in the left-right direction are formed on the upper wall 19. The spring piece 23 is formed by bending a strip-shaped portion inward. The spring piece 23 is formed so that the base end portion is located on the rear wall 22 side and extends obliquely downward from here. The spring piece 23 has flexibility, and in the bent state, a predetermined reaction force (force to return to the original state) is generated. The spring piece 23 is formed so that the distance between the tip position and the lower wall 20 is shorter than the sum of the diameter of the single wire conductor 17 and the thickness of the wire conducting member 14 in a state where there is no bending.

  In this embodiment, since the two electric wires 12 are conductively connected, the number of the spring pieces 23 is two. The number of spring pieces 23 is determined in accordance with the number of wires 12 connected.

  In the rear wall 22, a pair of circular insertion holes 24 for inserting the single wire conductor 17 of the electric wire 12 is formed. The front wall 21 is formed with a pair of rectangular through holes 25 for allowing the spring piece push-up member 15 to protrude from the inside to the outside of the spring member 13. The lower wall 20 is formed on a flat surface both inside and outside.

  The electric wire conducting member 14 is a substantially conductive plate-like member having an electric wire conducting portion 26 that conducts the single-wire conductors 17 of the electric wires 12. The electric wire conducting portion 26 is formed in a substantially wave shape as shown in FIG. 3B in order to make the contact area with the single wire conductor 17 as large as possible. The wire conducting member 14 is formed to have a predetermined thickness. The wire conducting member 14 is formed in a shape that can be placed on the lower wall 20 of the spring member 13. When the electric wire conducting member 14 is placed on the lower wall 20, the rear end face comes into contact with the rear wall 22. A part of the spring piece push-up member 15 is in contact with the front end surface of the electric wire conducting member 14 (so that the backward movement of the spring piece push-up member 15 can be restricted).

  When the wire conducting member 14 as described above is not provided, the lower wall 20 of the spring member 13 can function as the wire conducting portion.

  The spring piece push-up member 15 is a resin component such as polycarbonate, for example, and is formed so as to be interposed between the tip of the spring piece 23 and the electric wire conducting portion 26 before the electric wire 12 is inserted. The spring piece push-up member 15 is formed in a shape that is substantially U-shaped in a side view that is recessed from the spring piece 23 to the connector back position. More specifically, the members are as follows.

  The spring piece push-up member 15 has a shape that allows the spring piece 23 to be bent and pushed up before insertion of the single conductor 17 of the electric wire 12 to widen the gap between the tip of the spring piece 23 and the electric wire conducting portion 26 in advance. Is formed. Further, the spring piece push-up member 15 is formed in a shape that allows the insertion of the single-wire conductor 17 of the electric wire 12 to the connector deeper position than the spring piece 23 when the spring piece 23 is pushed up. Further, the spring piece push-up member 15 is formed in such a shape that the push-up state of the spring piece 23 is released when pushed forward by a predetermined length at the tip of the single wire conductor 17.

  The spring piece push-up member 15 has a vertical wall and a horizontal wall extending backward from the upper end and the lower end of the vertical wall. The vertical wall is formed as a conductor contact portion 27 with which the tip of the single wire conductor 17 contacts. Further, the upper horizontal wall is formed as an interposition part 28 interposed between the spring piece 23 and the single wire conductor 17 until the pushed-up state of the spring piece 23 is released. Further, the lower horizontal wall is formed as a sliding contact portion 29 that slides on the lower wall 20 of the spring member 13. The end surface of the sliding contact portion 29 is in contact with the front end surface of the wire conducting member 14. The sliding contact portion 29 is formed with a shorter length than the interposition portion 28. A single wire conductor 17 is inserted between the interposition part 28 and the sliding contact part 29.

  The spring piece push-up member 15 is accommodated in the case member 16 together with the spring member 13 and the electric wire conducting member 14.

  The case member 16 is a resin component that serves as an exterior of the plug-in type electric wire connector 11, and includes a transparent case main body 30 and a cap 31 that fits into the case main body 30 (the cap 31 is , Transparent or non-transparent). The case body 30 is formed so that the rear part is opened, and a cap 31 is fitted into the opening part. A fitting recess 32 is formed in the upper wall and the lower wall of the case body 30. The cap 31 is formed with a fitting protrusion 33. The case main body 30 and the cap 31 are fitted by the engagement of the fitting recess 32 and the fitting protrusion 33. The fitting protrusion 33 is formed on the insertion cylinder portion 34 of the cap 31.

  The inside of the case body 30 is formed in a stepped shape. Specifically, in order from the opening portion to the back, the cap fitting portion 35, the spring member housing portion 36, and the back space 37 are formed in a stepped shape. The cap fitting part 35 is formed as a part into which the insertion cylinder part 34 of the cap 31 is inserted. The spring member accommodating portion 36 is formed as a portion that accommodates the spring member 13 and the wire conducting member 14. The back space 37 is the innermost part of the case main body 30 and includes a movement amount restricting portion 38 that restricts the amount of pushing movement of the spring piece push-up member 15. The movement amount restricting portion 38 is formed in a step shape.

  The cap 31 is formed with a pair of circular insertion holes 39 for inserting the single wire conductor 17 of the electric wire 12.

  Next, the assembly of the plug-in type electric wire connector 11 and the operation of inserting the electric wire 12 will be described based on the above configuration and structure.

  The electric wire conducting member 14 is placed on the lower wall 20 of the spring member 13, the spring piece push-up member 15 is attached to the spring member 13 so as to bend the spring piece 23 and push it up, and these are attached to the case body 30. When the cap 31 is fitted into the case main body 30, the assembly of the plug-in wire connector 11 is completed in the state shown in FIG.

  In FIG. 1A and FIG. 4, the insertion operation of the electric wire 12 is started by inserting the single-wire conductor 17 of the electric wire 12 into the connector through the circular insertion hole 39 of the cap 31. The electric wire 12 is inserted without receiving a reaction force from the spring piece 23 until the tip abuts against the spring piece push-up member 15. If the insertion of the electric wire 12 is continued, the spring piece push-up member 15 is pushed in by the electric wire 12, and the push-up state of the spring piece 23 is released in this process. At this time, the spring piece 23 collides with the single wire conductor 17 by making an impact sound such as, for example, (the operator can audibly know that the electric wire 12 has been inserted). Thereafter, the single wire conductor 17 receives the reaction force from the spring piece 23 and is pressed against the electric wire conducting portion 26.

  In FIG. 1B and FIG. 5, the spring piece push-up member 15 pushed by the electric wire 12 stops at a predetermined position inside the connector, that is, at the position of the movement amount regulating portion 38. Thereby, the insertion operation of the electric wire 12 is completed. The spring piece push-up member 15 is fixed in a state in which the spring piece push-up member 15 is pressed against the movement amount regulating portion 38 by the electric wire 12.

  In FIG. 6A, the tip of the single wire conductor 17 contacts the spring piece push-up member 15 (conductor contact portion 27) when the single wire conductor 17 is inserted from the tip of the spring piece 23 to the connector deep position. Therefore, the wire 12 can be inserted without receiving a reaction force from the spring piece 23 by the length A inserted behind the tip of the spring piece 23 (FIG. 6B). As shown in the comparative example), when the spring piece push-up member 15 does not exist, the reaction force is received from the range of the length B, that is, from the tip of the single wire conductor 17).

  As described above with reference to FIGS. 1 to 6, according to the plug-type electric wire connector 11 of the present invention, the spring piece push-up member 15 is provided. There is an effect that the range for receiving the force can be shortened by the length A as compared with the conventional case. Therefore, there is an effect that workability can be improved. In addition, by providing the spring piece push-up member 15, it is possible to reduce the insertion trouble.

  In addition, according to the plug-type electric wire connector 11 of the present invention, since an impact sound is heard during the insertion operation of the electric wire 12, it is audibly informed to the operator that the electric wire 12 has been inserted reliably. There is an effect that it can be understood. Therefore, there is an effect that insertion trouble can be reduced.

  Furthermore, according to the plug-type electric wire connector 11 of the present invention, the amount of pushing movement of the spring piece pushing-up member 15 is regulated by the movement amount regulating portion 38 of the case main body 30, so that the pushing is performed until the spring piece pushing-up member 15 stops. If it does so, there exists an effect that the single wire conductor 17 can be inserted to the predetermined position inside a connector. Therefore, there is an effect that insertion trouble can be reduced.

  Furthermore, according to the plug-type electric wire connector 11 of the present invention, since the movement amount restricting portion 38 is provided, the spring piece push-up member 15 is sandwiched between the single wire conductor 17 and the movement amount restricting portion 38 and fixed. There is an effect that can be done. Therefore, there is an effect that the position of the spring piece push-up member 15 inside the connector can be stabilized.

  Furthermore, according to the plug-in type electric wire connector 11 of the present invention, since the case main body 30 is transparent, there is an effect that the insertion state of the electric wires 12 can be visually recognized by the operator. Therefore, there is an effect that insertion trouble can be reduced.

  It goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 11 ... Plug-in type electric wire connector 12 ... Electric wire 13 ... Spring member 14 ... Electric wire conduction member 15 ... Spring piece pushing member 16 ... Case member 17 ... Single wire conductor (conductor)
DESCRIPTION OF SYMBOLS 18 ... Cover part 19 ... Upper wall 20 ... Lower wall 21 ... Front wall 22 ... Rear wall 23 ... Spring piece 24 ... Circular insertion hole 25 ... Rectangular through-hole 26 ... Electric wire conduction part 27 ... Conductor contact part 28 ... Interposition part 29 ... Sliding contact part 30 ... Case body 31 ... Cap 32 ... Fitting recess 33 ... Fitting projection 34 ... Inserting tube part 35 ... Cap fitting part 36 ... Spring member accommodating part 37 ... Back space 38 ... Movement amount restricting part 39 ... Circular insertion hole

Claims (4)

A spring piece, a wire conducting portion that conducts the conductors of the plurality of electric wires, and a case member that accommodates these, and when the conductor of the wire is inserted between the spring piece and the wire conducting portion, the spring In the plug-in type electric wire connector having a structure in which the conductor of the electric wire is pressed against the electric wire conducting portion by a piece,
It further includes a spring piece push-up member housed in the case member together with the spring piece and the wire conducting portion,
The spring piece push-up member has a shape in which the spring piece is bent and pushed up before insertion of the conductor of the electric wire so as to widen the gap between the tip of the spring piece and the electric wire conducting portion in advance, and the spring piece In the pushed-up state, the shape that allows insertion of the conductor of the electric wire to a position deeper than the spring piece, and when pushed by a predetermined length at the conductor tip of the electric wire, the pushed-up state of the spring piece is released. A plug-type electric wire connector characterized by being formed into a shape. In the plug-type electric wire connector according to claim 1,
The plug-in type electric wire connector, wherein the spring piece push-up member has an interposition part interposed between the spring piece and the conductor of the electric wire until the push-up state of the spring piece is released. In the plug-in type electric wire connector according to claim 1 or 2,
The said case member has the movement amount regulation part which regulates the pushing movement amount of the said spring piece pushing-up member. The plug-in type electric wire connector characterized by the above-mentioned. In the plug-type electric wire connector according to claim 3,
A part or all of the case member is a transparent resin part.

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