JPH0375991B2 - - Google Patents

Abstract

PURPOSE:To use the naked wire portion of a sheathed wire itself to be connected as a direct connection pole by forming a space for accepting an L-shaped bend of the naked wire portion on the side of a fitting member. CONSTITUTION:Inserting a wire K with its front end sheath removed through an insertion hole 11 of a connector body 1, the front end surface s' of a naked wire s is inserted as far as it comes into contact with the inner surface of a contact wall 15 of a front end side 19 through a space in the connector body 1 and a fitting body 2 is press-fit into a space 14 in the body 1. The naked wire portion s is bent in an L-shape in the space by the press-fit force and with the lower part of the fitting body 22 and, at the same time, is forced to be placed in a space 23 formed with both of the bodies 1 and 2 so that the front end portion is made to project on the bottom side of the connector body 1 for serving as an output terminal. This makes it possible to use the sheathed wire itself directly as the output terminal of the connector.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention relates to an electric wire connector used for connecting multiple lead wires to various electrical devices, and the present invention relates to an electric wire connector that is used to connect multiple lead wires to various electrical devices, and in which the ends of the electric wires are also connected inside the connector. The present invention also relates to a terminalless electric wire connector in which the electric wire itself is directly used as a terminal member without using a connecting terminal, and the electric wire insertion direction is bent in a direction perpendicular to the output direction.

<Prior art> Conventionally, this type of electric wire connector generally receives a crimp-connected terminal such as a pin terminal at the tip of an electric wire, and has a metal terminal for making an electrical connection. (usually made of copper) with a buried terminal.

Particularly, in the case of electric wire connectors for L-shaped connection in which the insertion direction and the output direction of electric wires are perpendicular to each other, metal terminals for receiving electric wire terminals have been indispensable.

<Problems to be Solved by the Invention> Therefore, the conventional electric wire connector of this type receives the terminal crimp-connected to the end of the electric wire as described above, and has a metal terminal for making an electrical connection thereto. Since it was buried inside the connector body, it was necessary to manufacture this metal terminal, and the process of inserting it into the connector body was required, resulting in high manufacturing costs. . In addition, a terminal for attachment to the end of the electric wire is required, and the attachment thereof is required, which unavoidably increases the overall cost.

Therefore, in order to solve such conventional problems, the present invention does not embed any metal terminals in the connector body, and therefore does not require the manufacture of terminals for embedding, and also does not require any means for embedding. This is an electric wire connector that does not require any lead wire, and the covered electric wire itself as a lead wire can be used directly as an output terminal of the connector.

Therefore, even if the coating is peeled off for a predetermined length of the bare wire portion of the end of the covered wire,
Due to the expansion and contraction of the covering itself, the length of the bare wire portion often becomes longer or shorter. Even if the length of the bare wire portion is irregular, the present invention can
The amount of protrusion of the bare electric wire portion protruding from the bottom surface of the connector can always be reliably kept at a constant length.

<Means for Solving the Problems> The structure of the present invention for achieving the object will be explained using FIGS. 1 to 5 corresponding to the embodiments. An electric wire connector consisting of a connector main body 1 in which a plurality of insertion holes 11... of an end part k are arranged in parallel on the base end side 10, and a fitting body 2 that can be fitted and fixed to the connector main body 1. , the connector body 1 has a stopper portion 12 on the back side of the insertion hole 11 in the wire insertion direction, which allows the bare wire s portion of the covered wire K with the sheath removed to pass therethrough, but prevents the covered portion k from passing through. A contact wall 15 is formed on the front end side 19 of the main body to which the front end surface s' of the bare electric wire s comes into contact, and the inner surface of the contact wall 15 and the front end side 19 of the stopper part 12 are formed. There is a space 13 between the surface 12' and the fitting body 2 that allows the bare wire s to move downward.
The fitting body 2 has a structure in which a through hole consisting of a cavity 14 into which the body 2 is fitted is provided, and the fitting body 2 is connected to an upper half 21 that fits into the cavity 14 and a lower surface thereof, and fits into the space 13. The base end side 1 of the lower half part 22 is structured such that the lower half part 22 is
Between the part facing 0 and the surface 12' of the distal end side 19 of the stopper part 12 of the connector body 1,
The structure is such that a gap 23 is formed that allows the bare wire s portion of the covered wire K to be bent into an L-shape when the two bodies 1 and 2 are in the fitted position.

The connector of the present invention also has a structure in which the fitting body 2 is separate from the main body 2, and the fitting body is fitted into the space and the hollow portion without rotation as shown in the embodiments described later. I am doing it.

<Operation> Since the present invention has such a structure, the electric wire K whose tip has been stripped of its coating is inserted through the insertion hole 11 of the connector body 1, and the tip surface s' of the bare electric wire s is inserted into the connector body. This pressure is removed by inserting the fitting body 2 through the space 13 of the main body 1 until it comes into contact with the inner surface of the contact wall 15 of the distal end side 19, and then press-fitting the fitting body 2 into the gap 14 of the main body 1. The input causes the lower half 22 of the fitted body 2 to bend the bare wire s into the space 13 into an L-shape, and at the same time forcefully bends the bare wire s into the gap 23 formed by these bodies 1 and 2. The terminal is positioned so that its tip portion protrudes toward the lower surface of the connector main body 1, and functions as an output terminal.

Since the fitting body 2 is linearly inserted into the through hole, there is no fear of applying force to push back or shift the bare wire.

<Examples> Examples of the present invention will be described below based on the drawings.

1 to 5 are diagrams showing a first embodiment of the present invention, in which FIG. 1 is an isolated overall perspective view, and FIG.
The figure is a cross-sectional view of the center with the electric wire inserted, and FIGS. 3 to 5 are longitudinal cross-sectional views taken along the center line of the electric wire K over time. This is an embodiment in which the fitting body 2 and the fitting body 2 are formed separately.

Both the connector main body 1 and the fitting body 2 are injection molded from synthetic resin material, and the connector main body 1 is formed into a flat rectangular shape, and is biased toward the proximal end side 10 from the approximately central portion of the connector main body 1. Insertion holes 11 for inserting three electric wires K arranged in parallel along the longitudinal direction are formed, and a bare electric wire s is formed on the tip side 19.
A contact wall 1 of a predetermined width for abutting the tip end surface s′ of
5, a rectangular through hole in plan view is formed from the center portion to the contact wall 15 in the thickness direction (in the vertical direction in the figure), and the upper half thereof is fitted with a fitting described later. The upper half 21 of the combined body 2 is used as the cavity 14 to be fitted, and the lower half is the lower half 2 of the combined body 2.
2 is provided as a space 13 into which the holder 2 is inserted. Further, between the base end side 10 of the through hole and the inner back side of the wire insertion hole 11, there is a stopper portion 12 that prevents the covered end k of the wire K from passing through. A small hole is formed to allow it to pass through.

Furthermore, on both sides of the bottom of the through hole in the longitudinal direction, engagement recesses 1 are engaged with engagement protrusions 24, 24 formed protrudingly on both sides of the lower end of the fitting body 2 in the longitudinal direction.
6 and 16 (see FIGS. 1 and 7).

Further, protrusions 17 with hooks 17, 17 for fitting into a printed circuit board P as an electrical connection body, which will be described later, are formed protruding from the lower end portions on both sides in the longitudinal direction of the main body 1.

The fitted body 2 also includes an upper half 21 that fits into the cavity 14 and a lower half 2 that fits into the space 13.
2 are connected in a series to form a substantially rectangular block body, and the portion facing the base end side 10 of the main body 1 has a width corresponding to the diameter width of the bare electric wire s, and the upper half has a width corresponding to the diameter width of the bare electric wire s. Three gaps 23 each having an arc shape and a straight lower half are cut into a groove shape.

As shown in FIG. 2, the covered wires K are inserted into the three insertion holes 11 of the wire connector main body 1 having such a structure, and the bare wires s are inserted.
The lower half of the fitting body 2 is inserted into the gap 14 as shown in FIGS. At the same time, as shown in FIG. As shown in the figure, the bare wire s is bent downward, the bent portion of the bare wire s is accommodated in the gap 23 formed in the fitting body 2, and the tip of the bare wire s is connected to the connector body 1. protrude downward.

In this way, by fitting the fitting body 2 to the connector body 1, a plurality of electric wires K
. . . are connected with a connector with the connection pole in a direction perpendicular to the insertion direction.

Therefore, the tip of the bare wire s is connected to the connector body 1.
It is used as a connection pole that protrudes downward from the base of the space 13.

Next, in order to attach the connector to which the electric wires have been connected in this way to the printed circuit board P as an electrical connection body, as shown in FIGS. The locking protrusions 17, 17 are connected to the locking holes H, H of the printed circuit board P.
(See Fig. 7) and lock it. At this time, each bare electric wire s protruding downward from the connector main body 1 automatically fits into the connection hole h of the printed circuit board P, and a portion thereof protrudes from the back side (lower surface in the figure). Electrical connection is made by soldering this protruding portion to the printed wire p on the back side of the printed circuit board.

The printed circuit board P connected to the electric wire K in this way is used by being attached to a chassis S for a required device, as shown in FIG. 9, for example.

The embodiment shown in FIGS. 10 to 12 is based on the second
This shows an embodiment, and the general shape of the connector body 1 is formed into a flat rectangular shape as in the case of the connector body 1 shown in the first embodiment, and three electric wires are connected from the central part to the base end side 10. An insertion hole 11 for inserting the K-covered end K is formed, and a gap 14 having a rectangular upper half in the thickness direction is formed between the abutting wall 15 formed on the distal end side 19 and the center portion; The central part of the lower half of the wire insertion hole 11 connected to each of the wire insertion holes 11 is penetrated downward by a width equal to the diameter of the bare wire s from which the covering of the wire K is peeled off. The remaining part is formed into a short fence-like bottom plate, the base end of which is connected to the bare electric wire s.
A stopper portion 12 is formed to allow the coated wire K to pass through, but to block the process of the coated wire K, thereby restricting the movement of the coated wire K toward the distal end side. Also,
On the surface of the distal end side 19 of the stopper portion 12, a first
As is clear from FIG. 1, a gap 23 that accommodates half the diameter of the bare electric wire s is formed in a straight line.

The fitted body 2 includes a rectangular upper half 21 that fits into the cavity 14, and three lower halves protruding in the shape of geta teeth that fit into the spaces 13 individually formed below the upper half 21. As shown in FIG. 11, the portion located on the proximal end side of the lower half portion 22 has an arcuate upper portion and a straight lower portion. A gap 23 having a depth half the diameter of the bare wire s is formed, and the gap 23 originally formed in the main body 1 when fitted to the main body 1 is formed.
are combined to form a gap 23 that allows the bare wire s portion. Further, the main body portion 21 has a structure in which engaging protrusions 24, 24 that engage with engaging recesses 16, 16 formed in the main body 1 are formed on both sides in the longitudinal direction.

By completely fitting the thus formed fitting body 2 into the cavity 14 of the main body 1 as shown in the arrow shown in FIG. 11 as shown in FIG. L with the wire s part facing downward.
The bare electric wire s is bent into a shape, and the bare electric wire s is placed in a sandwiched position within the gaps 23 and 23 formed in the two bodies 1 and 2, and one end thereof is made to protrude downward from the main body 1.

By doing this, the connection of the electric wires K... to the connector is completed.

In this way, the space 13 formed in the connector body 1 may be an independent space for each electric wire K, so that the bare electric wire S portion protrudes downward at the correct position on the connector body 1. It goes without saying that the entire space does not necessarily have to be a series of spaces 13 as in the case of the first embodiment, as long as it has a structure in which the spaces 13 are connected.

The embodiment shown in FIG. 13 shows the third embodiment, in which the through hole formed in the connector body 1 is
Both the gap 14 in the upper half and the space 13 for bending the bare electric wire s in the lower half are made narrow with a width corresponding to the diameter width of the bare electric wire s, and each bare electric wire s is positioned therein. The holes 14' are formed individually in each section, and the fitting body 2 also has these holes 14'.
It has a narrow piece-like shape that can be individually fitted into each of the holes 14', and is press-fitted and fixed into each of the holes 14' individually.

The present invention may be implemented as a fitting body 2 that individually moves each of the electric wires K downward in this way.

The embodiment shown in FIG. 14 is a fourth embodiment, in which the outline of the connector body 1 and the fitting body 2 are formed in the same manner as in the third embodiment shown in FIG. 13. At the distribution stage, the connector body 1
In order to prevent the individual mating bodies 2... from separating, each mating body 2... is moved to a height position where the lower end surface of each mating body 2... does not interfere with the insertion of the bare wire s into the connector body 1. ... are press-fitted into each hole 14' of the main body 1.

This applies not only to the fitted body 2 formed into individual pieces as in the case of the third embodiment, but also to the fitted body 2 formed integrally as in the case of the first embodiment. For example, in the case of the first embodiment, the fitting body 2 may be partially fitted into the connector main body 1 as shown in FIG. It's okay.

In this case, the effort of aligning and fitting the fitting body 2 into the cavity 14 can be omitted, and the electric wire K can be connected to the connector body 1.
Since it is only necessary to press the fitting body 2 immediately after inserting it, there is an advantage that it can be used conveniently.

The reference examples shown in FIGS. 15 to 18 are first and second reference examples, respectively, in which a part of the second embodiment is further modified. This is a reference example in which a part of the unit 2 is connected to form an integral structure. That is, the 15th,
In the first reference example shown in FIG. 16, the connector main body 1 and the fitting body 2 are made of a thin wall that can be bent freely between the upper edge corner of the cavity 14 of the main body 1 and the proximal upper edge of the fitting body 2. The bent portion 25 has an integral structure connected in series, and the fitting body 2 is press-fitted into the cavity 14. Therefore, the bent portion 25 in the reference example is formed on the abutting wall 1 on the distal end side 19 of the main body 1.
It is also possible to have a structure in which the upper edge of the inner surface of 5 and the upper edge of the distal end side of the fitting body 2 are connected.

Further, the reference example has a structure in which a gap 23 is formed on the connector main body 1 side to allow the bent position of the bare wire s portion.

In this way, the gap 23 that allows the bent position of the bare wire s portion according to the present invention may be formed on the fitting body 2 side (first embodiment) or on the main body 1 side (first reference example). Alternatively, it may be formed by partially distributing it to both bodies 1 and 2 (second embodiment).

Further, in the present invention, the connector body 1 and the fitting body 2 are fitted and fixed by the engagement between the engagement recess 16 and the engagement protrusion 24 shown in the first embodiment.
It is possible to use frictional resistance by press-fitting the bodies 1 and 2 as in this embodiment, or to fit and fix them by other means.

17 and 18 show a second reference example, in which the fitting body 2 is bendably connected via a thin bending portion 25' at the upper end position of the proximal end side 19 of the connector body 1. It has a one-piece structure.

Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structure of these embodiments. It can be implemented with appropriate modification within the scope of achieving the following effects.

<Effects of the Invention> As is already clear from the above description, the present invention has the following effects:
Since the connector does not use any terminals such as metal terminals or connectors, and the bare wire part of the wire itself is used directly as the connection pole, only the connector body is synthesized during manufacturing. Since it can be manufactured from resin materials, it is extremely easy to manufacture and can be mass-produced at low cost.There is no need to embed or embed the terminal during molding or any subsequent assembly process. Costs can be significantly reduced. In addition, there is no need to connect connection terminals to the ends of the electric wires used, so
Since the manufacturing of the terminal and the process of connecting it to the end of the electric wire are not necessary, the overall cost can be further reduced. In addition, the wire insertion direction and the output pole side are arranged at right angles, and the bare wire portion is directly bent, so even if an external force is applied to the wire in the withdrawal direction, it will not easily come out, and the vertical The thickness in the width direction can be made thinner, making it possible to connect electric wires to narrow spaces.

In particular, in the present invention, the length of the bare wire portion from which the wire coating has been peeled off varies, and even if the length of the bare wire portion is uneven, the amount of protrusion of the end portion of the bare wire toward the lower end of the connector is always kept at a constant length. We have come to expect the remarkable effect of being able to make them stick out while aligned.

[Brief explanation of drawings]

1 to 5 are diagrams showing a first embodiment of the present invention, in which FIG. 1 is an overall perspective view showing a separated state, FIG. 2 is a central cross-sectional plan view of the connector body,
Figures 3 to 5 are respectively central vertical sectional side views showing the connection state over time, Figure 6 is a central vertical sectional side view showing the connection state to the printed circuit board, and Figures 7 and 8 are the central vertical sectional side views showing the connected state over time. 9 is a side view showing an example of use, and FIGS. 10 to 12 are partially cutaway perspective views showing the second embodiment, and the center of the separated state and connected state. The vertical side view, Figures 13 and 14 are the 3rd and 4th views, respectively.
Figure 1 A perspective view and a partially cutaway perspective view showing an embodiment.
Figures 5 and 16 and Figures 17 and 18 are the first,
FIG. 7 is a vertical cross-sectional side view of the central portion of the electric wire in a separated state and a connected state, respectively, showing a second reference example. In the figure, 1 is the connector body, 2 is the fitting body, 10
11 is the insertion hole, 12 is a part of the stopper,
13 is a space, 14 is a void, 15 is a contact wall, 1
9 is the tip side, 21 is the upper half, 22 is the lower half, 23
K is the gap, K is the covered wire, k is the covered end, s is the bare wire, and s' is the tip surface.

Claims (1)

[Claims] 1. Consists of a connector main body 1 in which a plurality of insertion holes 11 for the covered end k of a covered electric wire K are arranged in parallel on the base end 10 side, and a fitting body 2 that can be fitted and fixed thereto, A stopper part 12 is formed on the connector body 1 to allow only the bare wire s to pass through and to block the covered part k.
Between the stopper portion and the contact wall 15 on the side of the main body tip 19, there is a space 13 that allows the bare wire s portion to move downward, and a gap 14 that receives the upper half of the fitted body.
A through hole is provided between the surface of the lower half of the fitting body 2 on the proximal end 10 side and the surface of the stopper portion of the connector body 1 on the distal end 19 side. In a connector in which a gap portion 23 is formed to allow L-shaped bending of the bare wire s portion in the mating position, the connector main body 1 and the mating body 2 are separate bodies, and the connector body 1 and the mating body 2 are not inserted into the abutment wall 15. A terminalless electric wire connector characterized in that the tip end surface of the bare electric wire s is brought into contact with the front end surface of the bare electric wire s before the L-shaped bending. 2. The terminalless electric wire connector according to claim 1, wherein the connector body 1 and the fitting body 2 are fitted and fixed by engagement between the engagement recess 16 and the engagement protrusion 24. 3. The terminalless electric wire connector according to claim 1, wherein the fitting and fixing of the connector body 1 and the fitting body 2 is achieved by frictional resistance caused by press-fitting the fitting body 2 into the connector body 1. 4. The terminalless electric wire connector according to claim 1, wherein the fitting body 2 is formed into a piece-like shape as a narrow unit body that individually bends a plurality of bare electric wires s into an L-shape.