JP3435569B2 - Wire connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention consists of a single line for indoor wiring from a distribution board to a terminal outlet in various buildings such as houses and buildings. The present invention relates to a single-wire connector for use when connecting or branching a plurality of wire cables. 2. Description of the Related Art Conventionally, as a connector for connecting a single-wire cable having a relatively thick single wire having a diameter of 1 to 2 mm as a conductor and mainly used for wiring behind a ceiling or in a wall, a single wire is simply inserted. The connection between electric wires and cables can be performed by one-touch operation described in, for example, JP-A-7-22.
No. 084, as already proposed by the present applicant. This type of electric wire connector generally has a structure corresponding to the use of a plurality of electric wires, such as one for two wires for connecting only two electric wires, and another for three or four wires. At the same time, the inserted wire is pressed against the conductive plate for conduction, and when an external force is applied to the inserted wire in the pull-out direction, it bites into the wire to prevent accidental removal. The structure has an electric wire pressing claw that functions to prevent movement. [0003] The structure of such a connector is a closed-end rectangular cylindrical container body formed of a synthetic resin material, and a metal fitting provided inside the container body, which has a plurality of wire pressing claws. A metal fitting, a conductive plate made of a good conductor, and a lid made of a synthetic resin fitted and fixed to the opening of the container body, the lid having a plurality of wire guide holes for guiding the tip of the wire. A wire guide hole of the lid, between a plurality of wire pressing claws mainly including metal fittings housed in the container body and a conductive plate similarly housed facing the distal end of the wire pressing nail. A plurality of wire passage guide holes penetrating the wire pressing claw are formed at respective positions corresponding to and the wire inserted from the wire guide hole passes through the wire passage guide hole and then enters while bending the wire pressing claw. After the insertion is completed, the wire is The pressing contact against the external force to be pull out the wire, to prevent the end portion of the wire pressing pawl is moved in the direction pulling the wire cuts into the wire. The wire pressing claws are manufactured by press working so that a plurality of sets have an integrated structure corresponding to the number of wires to be connected. [0004] In the conventional electric wire connector according to the above description, since a number of electric wire pressing claws corresponding to the number of electric wires to be used have an integral structure, when a plurality of electric wires are inserted, an electric wire is inserted. When the pressing claw is deformed and the contact resistance is reduced, or when the deformation is increased, the container body may be damaged. Furthermore,
To make wire insertion smooth and efficient, the positional relationship between the wire passage guide hole and the wire guide hole of the lid, and the dimensional relationship between the inner size of the container body and the outer size of the integrated wire pressing claw, are precisely determined. The precision machining of a difficult-to-machine spring material has the disadvantage of increasing the fabrication cost. Furthermore, it is necessary to prepare electric wire pressing claws having different numbers of claws for each type of electric wire to be used, which has a problem to be solved in that the production cost and the component management cost increase. Accordingly, the present invention provides a method of using an electric wire pressing member of the same shape which is easy to manufacture, by the number of electric wires individually, and a plurality of electric wire pressing members arranged and contacting one conductive plate having a simple shape. An object of the present invention is to provide an electric wire connector that solves the problems of the conventional example by adopting a method of housing in a container body. The structure of the present invention for achieving the object will be described with reference to the reference numerals in the drawings showing the embodiments. The structure of the electric wire connector according to the present invention is as follows. An electric wire connector for inserting a plurality of single-wire electric wires from the same direction and electrically connecting the electric wires to each other, comprising: a container body 1 having a bottomed rectangular cylindrical shape formed of a synthetic resin material; Metal fittings having two electric wire pressing claws 21 and 22
A plurality of hard metal wire pressing bodies 2 manufactured individually ;
One conductive plate 3 made of a good conductive metal material, and a synthetic resin lid fitted and fixed in a space 11 facing the opening of the container body 1, and a plurality of guides for guiding the front end of the electric wire. consists of the wire guide hole 41 a with a lid 4 which, the individual wires pressing member 2, a first vertical position with bare wire passage hole 2h at positions corresponding to the wire guiding hole 41 of the lid 4 A wall 2a, a second wall 2b in a horizontal posture extending shortly forward from an upper end thereof, a third wall 2c in a horizontal posture extending long forward from below the first wall 2a, and stand up from the rear end. A fourth wall 2d in a vertical position, and a fifth wall 2e extending forward from an upper end thereof;
b is bent in a U-shape in a double-layered manner at a first bent portion 2f directed downward, and is again bent at a second bent portion 2g near the first wall 2a, and a first inclined wall directed obliquely downward and forward. 2i is formed, and a first wire pressing claw 21 is formed at the tip thereof, and the front end of the fifth wall 2e in the horizontal posture enters under the second wall 2b and the portion 2j is formed.
And a second inclined wall 2k whose front end side is directed obliquely downward and forward is formed, and a second wire pressing claw 22 is formed at the tip end of the second inclined wall 2k. The conductive plate 3 is manufactured separately from these.
Third wall of the horizontal posture in a plurality of pressed wire pressing bodies 2
2c, it is arranged as a common plate, and has a structure in which a bare electric wire k is inserted into its upper space s. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with an example of a wire connector used for two wires.
The container body 1 and the lid 4 are molded into a predetermined shape using a synthetic resin such as polycarbonate or hard vinyl chloride. In the container body 1, a bottom space 12 for storing a combination member of the conductive plate 3 and the wire pressing body 2 is formed on the back bottom side, and the bottom space 12 positions the combination member. There are three partition walls 14 projecting toward the inside of the container. A cavity 11 for accommodating the lid 4 is formed from the end of the bottom cavity 12 to the opening of the container via the step. An engagement hole 13 is formed in a side wall of the space 11 to engage with a locking claw 43 provided on the lid 4. A locking claw 43 is provided on the side surface of the lid 4, and a recess 44 for accommodating a bundle of wires facing the inside of the container is formed. The wire guide holes 41 penetrate through the bottom surface of the recess 44. The opening edge has a conical surface in order to smoothly insert the electric wire k around the electric wire guide hole 41 and the side surface of the recess 44. The wire pressing body 2 is formed by using a single band made of a steel material such as SUS, and is molded and hardened as follows. That is, the electric wire pressing body 2 has a first wall 2a in a vertical posture having a bare electric wire passage hole 2h at a position corresponding to the electric wire guide holes 41 of the lid 4, and a first wall 2a in a horizontal posture extending shortly forward from the upper end thereof. A second wall 2b, a third wall 2c in a horizontal position extending forward from below the first wall 2a, a fourth wall 2d in a vertical position rising from the rear end, and extending forward from the upper end thereof. 5th wall 2e, the 2nd wall 2b of the horizontal posture is the 1st bent part 2f which goes to the lower part.
At the first wall 2a.
Is bent again at the second bent portion 2g near the front wall, a first inclined wall 2i which is directed obliquely downward and forward is formed, and a first wire pressing claw 21 is formed at the tip end thereof, and the fifth wall 2e in the horizontal posture is formed. The front end of the second wall 2b enters below the second wall 2b, and is bent back into a U-shape at the portion 2j to form a second inclined wall 2k with the front end directed obliquely downward and forward. An electric wire pressing claw 22 is formed. The conductive plate 3 is made of a good conductive metal plate such as copper. In the first representative embodiment, the metal plate is simply cut into a square having a predetermined size. This one conductive plate 3 has a plurality of wire pressing members 2...
Are arranged on the third wall 2c in the horizontal position as a common plate to form a combination member composed of the conductive plate 3 and the wire pressing body 2, and the space 12 of the container main body 1 is formed in the state of the combination member. Housed inside. In the housed state, the wire pressing body 2 is disposed between the partition walls 14 and the conductive plate 3
Are housed between the end surface of the partition wall 14 and the bottom wall 15 of the container body 1 with the third wall 2c in the horizontal posture interposed therebetween, and the upper surface thereof and the electric wire pressing claws 21 and 22 at the two locations are accommodated. To form an upper space s, and the bare electric wire k is inserted into the space. The conductive plate 3 may be a single plate, but may be a corrugated plate or a roll of a good conductive metal to form a plurality of grooves 3.
1 is formed in parallel and has a shape in which it is in surface contact with the side surface of the bare wire k, so that the contact resistance can be reduced and the current carrying capacity can be increased. Further, since the conductive plate 3 has a simple structure and does not require precision processing, it can be manufactured at extremely low cost.
In addition, it is possible to improve corrosion resistance by plating the entire surface with tin. In assembling the electric wire connector, a combination member composed of the conductive plate 3 and the electric wire pressing body 2 is housed in the bottom space 12 of the container body 1. The storage direction and the storage position are determined by the bottom wall 15 and the partition wall 14 of the container body 1, and the gap between the three partition walls 14 and the wire pressing body 2
The third wall 2c in the horizontal posture, the fourth wall 2d in the vertical posture that subsequently rises, and the fifth wall 2 that extends forward from the upper end thereof.
The insertion direction is uniquely determined in relation to the respective width dimensions of the wall 2e, and the first and second wire pressing claws 21 and 22 at the ends of the wire pressing body 2 face the insertion direction of the bare wire k. The work can be completed without any caution or skill in the work. In the electric wire connection operation, when the bare electric wire k is inserted into the container body 1, the tip of the bare electric wire k becomes the first inclined wall 2 i and the second inclined wall 2 having the spring elasticity of the electric wire pressing body 2. 2k is pushed open and penetrated, pressed by the conductive plate 3 by the wire pressing claws 21 and 22 and brought into line contact or surface contact with the surface of the conductive plate 3, and other bare wires similarly inserted into the connector. It is electrically connected to the electric wire k via the conductive plate 3. The wire pressing claw 21 inclined in the direction along the insertion direction of the bare wire k strongly bites into the surface layer of the bare wire k when an external force is applied to the bare wire k in the pull-out direction, and the bare wire k from the connector is formed. Prevent escape. Therefore, the connection work can be easily and reliably completed without error by anyone. Further, since the connector of the present invention has a structure in which the electric wire connector is completed only by combining the four types of parts as described above, the manufacture thereof is extremely easy, and a structurally skilled person is required. It can be easily assembled without it. In addition, only the wire guide hole 41 of the lid 4 and the bare wire passage hole 2h of the wire pressing body 2 serve as a guide when inserting the wire, and since there is no other component having a guiding action that is positioned relative to each other. The precision of each part is not so much required and is therefore easy and inexpensive to manufacture. Further, in order to cope with the number of electric wires to be connected, the basic structure of the container body 1, the lid 4, and the conductive plate 3 is expanded in accordance with the number of electric wires, and the electric wire pressing body 2 is common. Because of this, parts management is easy. Therefore, productivity can be improved and profits can be secured. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall exploded perspective view illustrating the structure based on the manufacturing method of the first embodiment, FIG. 2 is a longitudinal side sectional view of an electric wire connector, FIG. 3 is a front view thereof, and FIGS. Is a perspective view of the container body 1, a perspective view of the lid 4, FIG. 6 is a perspective view of the conductive plate 3, and FIGS. 7 to 9 are perspective views, front views, and side views of the wire pressing body 2. The electric wire connector according to the first embodiment of the present invention interconnects two electric wires, and the container body 1 and the lid 4 are made of polycarbonate resin. Lid 4 of the present embodiment
In the bottom of the recess 44, two wire guide holes 41 are formed. In the wire guide hole 41, a conical surface 42 is formed in an upper opening in order to facilitate wire insertion. Surfaces 45 are respectively formed. The conductive plate 3 has a simple structure in which one copper plate is cut into a rectangle. The electric wire pressing body 2 is made of SUS, and is formed by processing a single band into a predetermined shape in which it is developed, and then bending it. The core wire of the bare electric wire k is pressed against the conductive plate 3 to contact and restrain. Wire pressing claws 21 and 22 to be formed are formed. The wire pressing claws 21 and 22 terminate obliquely in the direction along the wire insertion direction, and bite into the contact surface of the wire to prevent movement when the bare wire k is to be pulled out. The structure after assembly is as shown in the side sectional view of FIG.
Also, the state where the bare electric wire k is inserted is shown by a virtual line (dashed line) in FIG. FIG. 10 is a perspective view showing a use state of the first embodiment. FIG. 11 is a front view showing the second embodiment, which is an electric wire connector for connecting three electric wires. The internal structure is the same as in the first embodiment. FIG. 12 is a front view showing the third embodiment, which is an electric wire connector for connecting four electric wires. still,
Although not shown, the same structure can be expanded to provide an electric wire connector for connecting more electric wires. FIGS. 13 and 14 are plan views showing a fourth embodiment. The perspective view of FIG. 13 shows the conductive plate 3 used in the fourth embodiment. The groove 31 corresponding to the side surface is formed in parallel to form a waveform.
By using the conductive plate of this structure, the bare wire and the conductive plate are in surface contact, the contact area increases, the contact resistance decreases, and the capacity of the wire connector can be increased with the same external dimensions. At the same time, it is possible to extend the life of the contact portion. Further, since this embodiment is designed to connect three electric wires, three concave grooves 31 are formed in the conductive plate 3 and have a front shape as shown in FIG. The dimensions of the partition wall 14 of the main body 1 are adapted to the equivalent apparent thickness of the conductive plate 3. Although illustration is omitted, a plurality of grooves 31 are generally formed in the conductive plate 3.
Is formed, it is possible to implement an electric wire connector corresponding to a plurality of electric wire connections, and it goes without saying that they are included in the technical scope of the present invention. Although the embodiments which are considered to be representative of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, but includes the above-mentioned constitutional requirements according to the present invention, and The present invention can be carried out with appropriate modification within the range of achieving the object of the invention and having the following effects. For example, it goes without saying that the material of each part is changed to another equivalent material, and the conductive plate is formed as an integrated rolled product, or an air circulation port for discharging hot air is formed at the bottom of the container body 1, Arbitrary modifications such as forming the container body 1 and the lid 4 opaque or transparent can be performed. As is clear from the above description, the electric wire connector of the present invention has a structure in which the electric wire connector is completed only by combining four types of parts. Since good electrical connection can be made to other wires via the conductive plate only by inserting the single wire, the wire connection operation can be easily and reliably completed by anyone without error. Also, once external force is applied to the wire after the connection is completed,
The wire pressing claws formed at both ends of the wire pressing body inclined in the direction of insertion of the wire strongly bite into the surface layer of the wire and prevent the wire from coming out of the connector. Further, since the electric wire is pressed against the conductive plate by the two electric wire pressing claws, the contact resistance between the electric wire and the conductive plate is extremely low, and the occurrence of accidents such as heat generation and fire due to poor contact can be prevented. Since the conductive plate is formed integrally by cutting one sheet metal, and each wire is individually and strongly pressed by an individual wire pressing body, the pressing force of the wire pressing body and the action on the wires are reduced. It is not deformed by external force. Therefore, it is possible to prevent an increase in contact resistance or detachment of the electric wire due to a decrease in the pressing force of the spring, and to keep the connection resistance between the plurality of electric wires low as a whole. Also, since the wire pressing body is common,
Easy to manage, increase productivity and secure profits
Can be Further, since the container body is not damaged by the deformation, it is possible to prevent waste of the container material and contribute to holding down the manufacturing cost, and it is possible to expect an effect that the profit can be secured. is there.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall exploded perspective view illustrating the structure of a first embodiment based on a manufacturing method. FIG. 2 is a longitudinal side sectional view showing the first embodiment. FIG. 3 is a front view of the same. FIG. 4 is a perspective view of the container body. FIG. 5 is a perspective view of the lid. FIG. 6 is a perspective view of the same conductive plate. FIG. 7 is a perspective view of the same wire pressing body. FIG. 8 is a front view of the same wire pressing body. FIG. 9 is a perspective view of the wire pressing body. FIG. 10 is a perspective view showing the state of use. FIG. 11 is a front view showing a second embodiment. FIG. 12 is a front view showing a third embodiment. FIG. 13 is a perspective view of a conductive plate according to a fourth embodiment. FIG. 14 is a front view showing a fourth embodiment. DESCRIPTION OF SYMBOLS 1 Container main body 11 Vacancy 12 Bottom cavity 13 Engagement hole 14 Partition wall 15 Bottom wall 2 Electric wire pressing body 21 First electric wire pressing claw 22 Second electric wire pressing claw 3 Conductive plate 31 Groove 4 Lid 41 Wire guide hole 42 Conical surface 43 Locking claw 44 Recess 45 Conical surface k Bare wire s Vacant space

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H01R 4/48 H01R 4/00

Claims (1)

(57) [Claim 1] An electric wire connector for inserting a plurality of single-wire electric wires from the same direction and electrically connecting each other to each other, and having a bottomed rectangular cylindrical shape formed of a synthetic resin material And a metal fitting provided inside the container body (1), comprising a plurality of individually manufactured hard metal having two electric wire pressing claws (21) and (22). Wire pressing body (2) , one conductive plate (3) made of a good conductive metal material, and a space (1) facing the opening of the container body (1).
1) a lid made of synthetic resin fitted and fixed to 1) and having a plurality of wire guide holes (41) for guiding a tip end of the wire.
(4), the individual wire pressing body (2), the lid body
At the location corresponding to the wire guide hole (41) in (4), the bare wire passage hole (2
h), a first wall (2a) having a vertical posture, a second wall (2b) having a horizontal posture extending shortly forward from an upper end thereof, and a long wall extending forward from below the first wall (2a). A third wall (2c) extending in a horizontal position, a fourth wall (2d) rising in vertical position from a rear end thereof, and a fifth wall extending forward from an upper end thereof.
(2e), wherein the second wall (2b) in the horizontal posture is folded in a U-shape in a double-layered manner at a first bent portion (2f) directed downward, and is near the first wall (2a). At the second bent portion (2g) of the first inclined wall (2
i) is formed, a first wire pressing claw (21) is formed at the tip thereof, and the front end of the fifth wall (2e) in the horizontal posture is the second wire pressing claw (21).
A second inclined wall (2k) which enters under the wall (2b) and is folded in a U-shape at that portion (2j) to form a second inclined wall (2k) whose front end is directed obliquely downward and forward, and a second electric wire is provided at the end thereof The third wall (2c) having the horizontal posture in the plurality of individually-manufactured wire pressing bodies (2) has a structure in which a pressing claw (22) is formed, and the one conductive plate (3) is is arranged as a common plate on the bare wire into its upper space (s) (k)
An electric wire connector with a structure to be inserted.