JP2010061840A - Low-profile connector for cable connection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for cable connection made to be low in height and thin while maintaining a connector function equivalent to or more than a conventional one. <P>SOLUTION: The low-profile connector for cable connection is provided with a planar connector housing 1 made of an insulative resin equipped with at least two cable insertion holes 10 into which at least two conductor cables K are inserted separately, a conductor plate 2 made of a metal plate arranged in a space formed inside the housing 1, and two cable pushing springs 3 arranged on the conductor plate 2 so as not to interfere with each other. Each of the cable pushing springs 3 contact with each of the conductor cables K inserted into the cable insertion holes 10 at three points to perform a pushing work and an anti-coming-off work to the conductor plate 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention mainly relates to a thin wire connector suitable for use in a building structure such as a house or a building. More specifically, the floor is made as low as possible when connecting the wires of the heater panel laid on a general household floor or connecting the wires to the electronic equipment laid on the office floor. The present invention relates to a thin wire connecting connector that can be arranged above and below a surface.

  Examples of the electric wire connecting connector arranged along the floor surface include one end side of a resin case formed in a rectangular parallelepiped shape and others as seen in, for example, JP-A-9-55239 (Patent Document 1). Three pairs of electric wire insertion holes for inserting two pairs of energization wires and one pair of ground wires are formed at a position shifted to the end side, and the three spaces formed therein have the above-mentioned Metal fittings for electrically connecting the wires inserted through the wire insertion holes are accommodated, and each metal fitting is inserted from the wire insertion hole on one end side of the case and the wire insertion hole on the other end side. In addition, a connector for connecting an electric wire having a structure in which two electric wire pressing springs for pressing a pair of electric wires against a metal fitting are attached is known.

  Moreover, as a connector for electric wire connection for connecting covered lead wires composed of a plurality of thin core wires, as seen in, for example, Japanese Utility Model Laid-Open No. 1-155263 (Non-patent Document 1), in plan view Two wire insertion holes for inserting two lead wires with lead wire terminals connected to the tip of the wire are formed adjacent to each other at one end of a resin case formed in a substantially rectangular parallelepiped shape. Two metal wires for housing metal fittings for electrically connecting the wires inserted through the wire insertion holes and individually pressing the lead wires respectively inserted from the two wire insertion holes into the metal fittings A connector for connecting electric wires in which pressing springs = connecting terminals are arranged back to back has already been known.

Each of these wire connection connectors is arranged with the flat surface of the metal fitting in the space formed inside the case, and the electric wire pressing spring is arranged along the flat surface of the metal fitting. The thickness of the resin case is reduced by adopting a structure in which the electric wire inserted from the electric wire insertion hole is pressed in the horizontal direction.
JP-A-9-55239 Japanese Utility Model Publication No. 1-155263

  However, in any of these prior arts, the material width of the wire pressing spring that contacts the wire inserted in the case and presses it against the pressure receiving surface of the metal fitting is the thickness of the case. Widely formed using a wide spring material in the same way as a wide wire pressing spring that has been used for a long time for bulky connectors or block-shaped connectors that do not need to be considered An electric wire pressing spring is used.

  For this reason, it is difficult to make the thickness of the entire case thinner than that shown in the figure, and there is no description suggesting such necessity or idea. This is due to the necessity of having to be able to reliably give a predetermined pressing action and retaining action to the inserted electric wire due to the nature of the product. I think that the.

  However, on the other hand, as described above, the connector can be installed as low as possible on the upper surface of the floor or the like, or can be reliably installed in a small space on the lower surface of the floor, etc. It is assumed that there are also potential demands.

  Therefore, the present inventors pay attention to this point, do not cause deterioration of the function, do not generate heat exceeding the allowable range defined in the JIS standard, and have a connector equivalent to or higher than the conventional product. Since it has been possible to develop a connector for electric wire connection that has functions and is made as thin as possible, the structure is proposed here.

  The configuration of the thin connector for connecting wires according to the present invention taken in order to solve this problem will be described with reference to the drawings used to describe the embodiment. The configuration according to claim 1 Is a flat connector housing 1 made of insulating resin having at least two electric wire insertion holes 10 into which at least two energization wires K are individually inserted, and a space a formed inside the housing 1. And the two electric wire pressing springs 3 arranged in a non-interfering state with each other, and each of the electric wire pressing springs 3 is connected to the electric wire insertion hole 10. It is made into the structure which contacts the electricity supply line K inserted from 3 in three places, and performs the press effect | action with respect to the electricity supply board 2, and the retaining action.

  Moreover, the structure of Claim 2 is a plate-shaped body in which the current-carrying plate 2 according to Claim 1 is made by plating a copper plate, a brass plate, an aluminum plate or other appropriate good conductor metal material in the width b direction. The electric wire receiving surface 21 is provided on both sides, and the electric wire pressing spring 3 is configured to press the conductive wire K at three locations against the electric wire receiving surface 21.

  Further, in the configuration according to claim 3, the electric wire pressing spring 3 according to claim 1 or 2 bends one continuous leaf spring and makes contact with the energizing line K at three places to perform pressing action. In this contact portion, one or two of the contact portions have a structure for preventing the electric wire from coming off.

  The thin connector for connecting electric wires according to claim 1 having such a structure has a structure of an electric wire pressing spring that presses an electric wire inserted into the connector housing from the electric wire insertion hole against the electric plate. The contact width at three locations is made to perform the pressing action and the wire retaining action at one or two of these contact locations, so the material width of the wire pressing spring, that is, It is possible to sufficiently increase the pressing action on the conducting wire and the retaining action by the width w of the wire pressing spring, and the width w of the wire pressing spring can be set within a range having a predetermined pressing force when inserting the wire. This has the remarkable advantage that it can be made as small as possible without causing excessive resistance pressure. Therefore, at least the entire thickness of the housing can be reduced by the reduced width of the reduced wire pressing spring, and it can be mounted or placed at the lowest thickness on the floor or the like. It can have the effect that it can be used.

  In the connector according to claim 2, the energization plate is formed of a plate-like body in which the energization performance is improved by performing metal plating on a copper plate, a brass plate, an aluminum plate or other appropriate conductor metal material. With good performance, the electric wire can be pressed at three locations on the electric wire receiving surfaces formed on both sides in the width b direction, and the height of the electric wire receiving surface can be minimized as well as the width of the electric wire pressing spring. In this respect, the thickness of the entire housing can be reduced.

  In the connector according to claim 3, the electric wire pressing spring is formed by bending a single continuous leaf spring, and the electric wire is brought into contact with the conducting wire at three locations to perform a pressing action. Since it has a structure that prevents the wire from coming off at one or two locations, as with the conventionally known two-point contact spring structure, if the spring thickness is reduced, the pressing force on the wire decreases and heat is generated during energization. If it becomes easier or the spring thickness is increased, the pressing force against the electric wire can be increased, but the resistance at the time of inserting the electric wire increases and the problem that the insertion of the electric wire becomes difficult does not occur, and the spring resistance at the time of inserting the electric wire is unnecessary. It is easy to insert the electric wire without increasing, and the inserted electric wire can be surely pressed against the energizing plate on average, and stable energizing performance can be exhibited. One in which it is possible to exhibit the results.

  In carrying out the present invention, if the side view shape perpendicular to the horizontal width b of the electric wire receiving surfaces 21 erected on both sides in the horizontal width b direction of the energization plate 2 is a circular arc cross section, The current-carrying portion t of the metal terminal T connected to the tip of the electric wire is preferable in that it can easily come into contact with and be received by a circular or arcuate section.

  In forming the connector housing 1, the electric wire insertion hole 10 may be disposed opposite to one end side and the other end side of the housing 1, and the two electric wires are adjacent to each other on one end surface of the housing 1. You may implement as a structure in which the insertion hole 10 is formed. In the former case, not only one set of current plates 2 in the housing 1 but also a plurality of sets are provided, and a plurality of sets of wire insertion holes 10 corresponding to the number of sets are formed on each end face to connect the plurality of wires. In the latter case, a plurality of energization plates 2 can be installed in the transverse direction so as to be used for multi-line energization, or the shaft with reference to the end face where the wire insertion hole 10 is not formed. Formed symmetrically for conducting two sets of electric wires, or placing three on a horizontal or triangular shape on a horizontal plane, four in a positive shape, or more in the circumferential direction for conducting multiple wires You can also

As the structure of the wire pressing spring 3, as summarized in FIG. 10 to be described later, in the plan view shape, the wire is inclined from the wire insertion side to the inner back side, and the leading edge that contacts the wire is bite into the wire. The blade-shaped contact portion formed with the wire and the wire pressing portion that forms the contact surface with the electric wire in an arc shape and exclusively performs the pressing action on the electric wire. It can implement as a structure which contacts and presses an electric wire in a place.

  The connector referred to in the present invention may be a single wire or a set of multiple thin wires. In the case of a single wire, it can be used by directly inserting it into the connector. In addition to this single wire, especially in the case of multiple thin wires, it is formed in a round cross section, square shape, flat plate shape, etc. It is preferable to use the metal terminal T having the energized part t connected to the tip so that the energized part t is in contact with the wire pressing spring 3.

  Embodiments of the present invention will be described below together with illustrated examples. 1 to 9 are views showing a connector according to a first embodiment of the present invention, in which FIG. 1 is a perspective view showing an overall outline, FIG. 2 is a perspective view in which a housing body and a lid are separated, and FIG. 4 is an exploded perspective view of the internal metal fitting, FIG. 4 is an assembled perspective view of the internal metal fitting, FIG. 5 is a front view of the housing, FIG. 6 is a right side view of the housing, and FIG. Is a cross-sectional view taken along line AA in FIG. 7, and FIG. 9 is a cross-sectional view taken along line BB in FIG.

  As shown in FIGS. 1, 2, 7 and the like, the connector shown in the embodiment includes a housing 1 formed in a flat plate shape having a housing body 1A and a lid body 1B formed in a horizontally long rectangular shape in plan view. For example, it is a connector for connecting an electric wire which is formed of a synthetic resin material having excellent insulating properties and heat resistance, such as polycarbonate resin, and has a metal body for contact inside.

  As shown in FIGS. 1, 2 and 5, the housing 1 has an engagement protrusion 12 projecting from both side surfaces along the longitudinal direction of the housing body 1A and an engagement suspended from the corresponding side surface of the lid 1B. The hole 11 is engaged and integrated. In particular, as can be seen in FIGS. 2 and 7, this housing 1 is inserted into each of the diagonal lines between one end side and the other end side in the longitudinal direction, and one electric wire is opened toward the inside of the housing 1. In this structure, the holes 10 are formed to face each other.

  In the housing 1, a space a for mounting a metal fitting having a horizontally long rectangular shape along the outer shape of the housing 1 is formed, and the planar view shape is the same as the planar shape of the space a in the space a. A current-carrying plate 2 made of a metal plate formed into a shape is internally provided.

  This energization plate 2 uses, for example, a horizontally long rectangular metal plate obtained by applying tin plating to a copper plate to improve the energization performance. The vertical width b shown in FIG. As shown in FIG. 9, both side edge portions of the lateral width b) are distinguished from the width w to rise upward to form the rising walls 21 and 21, and the cross-sectional shape is circular. Bending in an arc shape and using a single wire directly, or improving the degree of contact with this single wire or the current-carrying part t having a circular cross section at the terminal T connected to the tip of the multi-strand thin wire assembly wire It is.

  Referring to FIG. 7 in detail, the current-carrying plate 2 is arranged with two wire pressing springs 3 in a symmetrical posture in the left-right direction and the up-down direction so as not to interfere with each other apart in the left-right direction. I'm allowed. These electric wire pressing springs 3 are formed by bending one continuous leaf spring, and the entrance side spring portions 31 close to the respective electric wire insertion holes 10 and 10 are in contact with the electric wires, It is formed so as to incline from the wire insertion hole 10 side toward the inner back side, and the intermediate spring portion 32 on the inner back side is bent in a curved shape and comes into contact with the electric wire at an arc portion, The inner side spring part 33 on the inner side is formed so as to incline in the same inclination direction as the inlet side spring part 31. In addition, the code | symbol 13 in this FIG. 7 shows the cavity part for reduction of a raw material.

  The thus configured electric wire pressing spring 3 contacts the energizing wire K inserted from the electric wire insertion hole 10 at three locations of the entrance side spring portion 31, the intermediate spring portion 32, and the back side spring portion 33. The energizing wire K is pressed toward the rising wall 21 of the energizing plate 2. Among these, the intermediate spring portion 32 mainly acts to press the energizing wire K against the energizing plate 2, and the other entrance side spring portion 31 and the back side spring portion 33 are connected to the energizing plate 2 of the energizing wire K. It has a structure that performs the retaining action at two locations simultaneously with the pressing action.

  Thus, the electric wire pressing spring 3 is formed by bending a single continuous leaf spring into a special shape, and is in contact with the conducting wire K inserted through the electric wire insertion hole 10 at three locations. While acting against the rising wall 21 of the energizing plate 2 and preventing the electric wires from coming off at the two front and rear, it is possible to use a material having a narrow width w. Although the insertion of the energization line K can be easily performed with little resistance, it is possible to achieve a sufficient pressing action on the energization plate 2 and a reliable retaining action of the electric wire.

  The thin connector for connecting wires shown in this embodiment having such a structure is not limited to a specific size, but the approximate dimensions are described as follows for reference. Length dimension of housing 1 = 46 mm, width dimension = 16 mm, thickness = 4.6 mm, length dimension of current plate 2 = 34 mm, width dimension = 8.2 mm, thickness = 0.4 mm, electric wire The width w of the pressing spring 3 is 1.8 mm and the thickness is 0.3 mm.

  FIG. 10 shows a plan shape of another embodiment structure of the electric wire pressing spring 3 formed by bending a continuous plate spring. (A) and (b) of the same figure, like the wire pressing spring 3 of the first embodiment, has a structure in which the conducting wire K is prevented from coming off at two places and only the pressing action is carried out at one place. In the case of (a), the retaining action is performed by the entrance side spring portion 31 and the intermediate spring portion 32, and in the case of (b), the intermediate spring portion 32 and the back side spring portion 33 are performed. It was made to let you. Also, (c) to (f) show an example of a structure in which the energizing line K is prevented from being detached at one place and only pressed at two places. Among these, (c) and (f) (D) is a structure in which the retaining action is performed only by the entrance side spring part 31 and only the pressing action is performed by the intermediate spring part 32 and the back side spring part 33. Only the intermediate spring portion 32 and the one shown in (f) are provided with the back side spring portion 33 only to prevent the removal.

  11 is a plan view of the portion corresponding to FIG. 7 showing the connector of the second embodiment, and FIG. 12 is a plan view of the portion corresponding to FIG. 7 showing the connector of the third embodiment. In the connector of the second embodiment shown in FIG. 11, the two current plates 2 in the connector shown in the first embodiment are installed in parallel in the housing, and two wires can be connected with one connector. It is what I do.

  Further, in the connector of the third embodiment shown in FIG. 12, it is assumed that three current-carrying plates 2 in the connector shown in the first embodiment are installed in parallel in the housing, and this connector has three lines. It is possible to perform electric wire connection, two electric wire connections, and one earth wire connection.

  FIG. 13 is a plan view showing the open state of the connector of the fourth embodiment. The connector of this embodiment is shown on the right side in the drawing on one end surface of the housing 1 formed in a substantially square shape in plan view. Two electric wire pressing springs 3 having a structure in which two electric wire insertion holes 10 are formed adjacent to each other end face and having the same structure as that shown in the first embodiment in the inner space a thereof. Are back-to-back, with a structure in which a single energizing plate 2 is mounted so as to be symmetrical in the vertical direction in the so-called figure.

  In addition, the conducting wire K shown in the embodiment is a conducting wire in which a plurality of thin wires are assembled, and is inserted directly into the connector housing 1 and has a round cross section at the tip of the plurality of thin wires k before insertion. The metal terminal T having the energized part t is connected, and the energized part t is left and insulated with a resin cover c, and inserted into the housing 1 so that the energized part t comes into contact with the wire pressing spring 3 for use. It is what I did. The other structure is the same as that of the first embodiment.

Although specific illustrations are omitted, in the case of the connector of this embodiment as well, in the case of the second embodiment and the third embodiment, two or three energizing plates 2 are arranged in parallel in the lateral direction. It is possible to implement it as a two-line or three-line energizing connector. In addition, the connector shown in FIG. 13 can be reversed in the left-right direction, and can be implemented for two-line energization in which the connector is reversed in an axially symmetrical manner with reference to the left end face in the figure. It may be arranged for three lines, four may be arranged in a + -shape for four lines, or a larger number may be arranged in the circumferential direction for multiple lines.

  Although the embodiments considered to be representative of the present invention have been described above, the thin connector for electric wire connection referred to in the present invention is not limited only to the structure of these embodiments, and the above-mentioned constituent requirements referred to in the present invention. In addition, the present invention achieves the object of the present invention and can be implemented with appropriate modifications within a range having effects.

  The thin connector for connecting electric wires referred to in the present invention is thin and not bulky as compared with the conventional connector, so it can be arranged along the top and bottom of various floors of buildings, etc. It seems that it will be used greatly.

The perspective view which shows the external shape of the connector of 1st Example. The perspective view which isolate | separated the housing main body and the cover body. The exploded perspective view of an internal metal fitting. The assembly perspective view of an internal metal fitting. The front view of a housing. The right view of a housing. The top view which removed the cover body of the housing. Sectional drawing along the AA line in FIG. Sectional drawing along the BB line in FIG. The top view which shows the other structure of an electric wire press spring. The top view of the open state which shows the connector of 2nd Example. The top view of the open state which shows the connector of 3rd Example. The top view of the open state which shows the connector of 4th Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 10 Electric wire insertion hole 11 Engagement hole 12 Locking protrusion 1A Housing main body 1B Cover body 2 Current supply plate 21 Electric wire receiving surface 3 Electric wire press spring 31 Entrance side spring part 32 Intermediate spring part 33 Back side spring part a Space b Horizontal width K Conducting wire

Claims (3)

A flat-plate connector housing (1) made of insulating resin having at least two wire insertion holes (10) for individually inserting at least two conductive wires (K);
A current plate (2) made of a metal plate disposed in a space (a) formed inside the housing (1);
The energizing plate (2) comprises two wire pressing springs (3) arranged in a non-interfering state with each other,
Each of the electric wire pressing springs (3) comes into contact with the conducting wire (K) inserted from the electric wire insertion hole (10) at three locations, and performs a pressing action and a retaining action on the energizing plate (2). A thin connector for electric wire connection.   The current plate (2) is a plate made by plating a copper plate, brass plate, aluminum plate or other appropriate good conductor metal material with metal plating, and has a wire receiving surface (21) on both sides in the width (b) direction, The thin connector for connecting an electric wire according to claim 1, wherein the spring (3) has a structure for pressing the conducting wire (K) at three points against the electric wire receiving surface (21).   The wire pressing spring (3) bends one continuous leaf spring and comes into contact with the conducting wire (K) at three locations to perform the pressing action. The thin connector for connecting electric wires according to claim 1 or 2, wherein the electric wire is prevented from coming off at two locations.

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