JPH0624131Y2 - F cable branch connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an F-cable branch connector suitable for branch-connecting a large number of electric appliances, typically lighting appliances, inside a building or the like.

<Prior Art> As shown in FIG. 10, conventionally, the wiring work of a large number of lighting fixtures (S) inside a building has been performed by "cross-wiring" (W) from fixtures to fixtures, that is, by fixing one fixture to the ceiling. After connecting to the power supply side on the back, use the branching connector provided in the device, or if there is no such connector, cut the wire and remove the insulating coating while branching from the device. It was customary to repeat the work of pulling out and returning it to the ceiling and connecting it to the next fixture for all of the lighting fixtures.

<Problems to be solved by the invention> In this conventional method, the work efficiency is low, and when the electric wire connection in the previous device is poor, it is rare that the subsequent device cannot be energized. There wasn't.

A branch line connector has been already proposed (for example, Japanese Utility Model Laid-Open No. 55-61978) which eliminates the need for such a crossover wiring and individually branches from a power feeding main line to each electric appliance.
However, in this proposal, a connector composed of many parts is connected while being assembled at a branching point on a construction site, and particularly when a portion far from the cut end of a long feeding main line is connected to the power feeding hole in the case of the connector. Since the main line must be penetrated, further improvement is desired not only in terms of wiring work efficiency but also in terms of connector manufacturing and supply.
Therefore, in the present invention, a large number of electric appliances in a certain area, typically a power supply trunk line for sharing power supply to a lighting fixture is passed through the area, and branch wirings from the trunk line to the individual lighting fixtures are provided. It is an object of the present invention to provide an F-cable branch connector that can be independently and simply manufactured, which is easy to manufacture and use, compact, and highly reliable in operation.

<Means for Solving the Problems> In order to achieve this object, an F according to an embodiment of the present invention.
In a cable branch connector, a current carrying body for conductively connecting a plurality of branch electric wires to respective power feeding trunk lines is housed inside a housing consisting of a bottom board, an inner lid and an upper lid, and a base portion for the current carrying body is provided. At least one connection spring that is supported and is conductively contacted with the back surface of the main body of the current-carrying member, and presses each branch electric wire to the bottom plate in a state of preventing the withdrawal of each branch electric wire. The first tip is curved in the insertion direction of the bare end of the branch electric wire, the second tip is inclined in the insertion direction and bites into it, and is formed of a rigid metal. At least one of the main body surfaces of the current-carrying body pressed against the bottom plate by the
From the part toward the upper lid, a contactor provided with an upward slit having a width corresponding to the core wire diameter of the feeding main line is erected.
A pair of electric wire pressing bodies are vertically provided from the back surface of the upper lid on both sides of the contact, and the distance between the lower end of the electric wire pressing body and the surface of the inner lid that receives the power feeding main line does not include the insulating material of the inner layer. It is characterized in that it corresponds to the outer diameter of the power supply trunk line to be removed.

An F-cable branch connector according to another embodiment of the present invention is an upper current-carrying body for conductively connecting a plurality of branch wires to respective feeder trunks inside a housing composed of a bottom plate, an inner lid and an upper lid. And a lower current-carrying body are housed, the rear surface of the main body of the upper current-carrying body and the rear surface of the main body of the lower current-carrying body are in conductive contact with each other, and the main body is made of a rigid metal and is held by the inner lid. From at least one part of the upper current carrying body, a contactor provided with an upward slit having a width corresponding to the core diameter of the feeding main line is erected from the at least one portion to the upper cover, and further, on both sides of the contactor, from the back surface of the upper cover. A pair of electric wire pressing bodies are provided vertically, and the distance between the lower end of the electric wire pressing body and the surface of the inner lid that supports the electric power feeding main line corresponds to the outer diameter of the electric power feeding main line without removing the inner layer insulating material. The body is also made of a rigid metal From the two parts of the upper electric conductor held by the inner lid, a contactor provided with a downward slit having a width corresponding to the core wire diameter of the branch electric wire is hung vertically toward the bottom plate, and the bottom plate is further provided on both sides of each contactor. A pair of electric wire pressing bodies are erected from the upper surface, and the upper end of the electric wire pressing body is
It is characterized in that a distance between the branch electric wire and the lower surface of the inner lid which supports the branch electric wire corresponds to the outer diameter of the branch electric wire in which the inner layer insulating material is not removed. That is, the second embodiment provides a connector having a structure in which the connection system of the power feeding trunk line in the first embodiment is also applied to a branch electric wire.

It is desirable that the connection spring is formed by bending a suitable springy metal plate such as brass or spring steel. It is preferable that the slit width of the contact on the side of the current-carrying body is the same as or slightly smaller than the core diameter of the power feeding main line.

The connector of the present invention is not limited to a two-wire type in which two power feeding main lines are attached or a three-wire type in which three power feeding main lines are attached (of which one line is often used as a ground line), but a single line type It may be of the formula. In any case, the number of branch electric wires taken out from each one main wire is one or more, preferably two.

<Operation> As described above, the F-cable branch connector of the present invention has the housing composed of the bottom plate, the inner lid, and the upper lid, and the inner lid has an energizing member and a connecting spring, or an upper energizing member and a lower energizing member.
It is characterized in that they are housed and held back to back with each other, so not only the structure is easy to manufacture, but also in use, it is necessary to insert the trunk into any hole by pressing down the trunk with the top lid removed. The work can be performed easily, simply and surely, such that the connection can be made without any operation and the bottom electric wire can be removed (first embodiment) or the branch electric wire can be connected without being removed (second embodiment) by pushing or the like. That is, in using it, first open the upper lid of the housing, peel off only the insulating material of the outer layer and cut off the insulating material of the inner layer, and connect the feeding main line to the current-carrying body (in the second embodiment, "the upper current-carrying body"). )) And place the upper lid on the lower limit position by force. As a result, the wire pressing body pushes the feeding main line into the slit, and the end surface of the opposing wall forming the slit breaks through the insulating material and is electrically connected to the internal core wire.

Next, in the connector according to the first embodiment, by inserting the end portion of the branch electric wire, in which the insulation coating is peeled off and bare, against the elastic force of the connection spring, it is inserted between the spring and the bottom plate. The electrical connection to the current-carrying body can be made with one touch via the spring. Since the second tip portion of the connection spring is engaged with the branch electric wire, the connection state is firmly maintained unless the release tool described later is operated. However, in the connector according to the second embodiment, the branch electric wire is also applied to the contact of the lower current-carrying body without removing the inner insulating coating, and the bottom board is forcibly pushed up to the upper limit position. Can be electrically connected.

<Embodiment> The present invention will be described in more detail with reference to an embodiment shown in the drawings.

As shown in (a) and (b) in FIG. 1, in the first embodiment shown in FIGS. 1 to 5, a synthetic resin bottom plate (11), an inner lid (12), and an upper lid (13). The housing (10) consisting of (1) and (2) contains a lower chamber (1
4) and the upper chamber (15) that houses a plurality of power supply trunk lines in which the outer layer insulation material has been removed but the inner layer insulation material has not been peeled off for each constituent single wire, the bottom plate (11) and the inner lid (12), respectively. ) And between the inner lid (12) and the upper lid (13).

Connect multiple branch lines (B1) and (B2) to the power supply trunk lines (K1) and (K
2) The current-carrying body (20) electrically conductively connected to the above housing (1)
It is stored in the upper chamber (15) of (0). The base portion (33) is supported by the electric conductor (20) and conductively contacts the back surface of the main body (21) of the electric conductor (20) to prevent the branch wires (B1) and (B2) from being pulled out. In this state, at least one connecting spring (30) that presses against the bottom plate (11) is held in the lower chamber (14).
The first tip portion (31) of the connection spring (30) has branch wires (B1), (B2).
Is curved in the insertion direction of the bare end, and the second tip portion (32) has a shape that is inclined in the insertion direction and bites into it.

On the other hand, the main body (21) is made of a rigid metal and the front side of the main body (21) is the inner lid (1
The current carrying body (2) pressed against the bottom plate (11) by the (2)
A contactor provided with an upward slit (23) having a width corresponding to the core wire diameter of the power feeding trunk lines (K1), (K2) ..., from at least one part of the surface of the body (21) of (0) toward the upper lid (13). (22) is erected, and further,
A pair of electric wire pressing bodies (16) and (16) are vertically provided from the upper lid (13) on both sides of the contactor (22) to receive the lower end of the electric wire pressing body (16) and a power feeding main line. Distance from the surface of the inner lid (12)
(T), the feeder trunk (K1), the inner layer insulation is not cut off,
Corresponds to the outer diameter of (K2).

The contact (22) is a vertical groove (12
Both sides are restrained by a) (see Fig. 2 (a)). Therefore, the electric conductor (20) is securely fixed inside the housing without fear of swinging in the lateral direction. On the other hand, since the connection spring (30) is also sandwiched between the outer stepped portion (12b) and the inner locking piece (12c) of the inner lid (12), there is no possibility of swinging laterally.
Then, the semicircular small projections (12e) projecting from the vicinity of the bottom of the vertical groove (12a) of the inner lid (12) in an opposing shape engage with the recesses (22a) of the same shape on the side surface of the contactor (22). Since it supports this, the contactor (20) does not sink due to the downward force received from the wire when the upper lid is pushed down, which will be described later.

In the figure, reference numeral (11a) is a bolt for fixing the inner lid (12) to the bottom plate (11), and reference numeral (12d) is a lock piece (13a) of the upper lid (13) that can be released and elastically locked. It is a retainer to do.

1 (a), (b), FIG. 2 (b) and FIGS. 5 (a), (b), reference numeral (40) indicates a release tool for the connection spring, which is a branch electric wire (B1). ), (B2) for pushing up the second tip portion (32) of the connection spring (30). In the normal state, the release tool is pressed against the shoulder portion (18) of the opening (17) of the bottom plate (11) by the spring (30). Therefore, when the release tool (40) is pushed up against the elasticity of the spring, the second tip portion (32) of the spring separates from the electric wire and the branch electric wires (B1), (B
2)… can be removed from the connector.

To take out a branch electric wire using the F cable branch connector of the present invention according to the first embodiment, first, the housing
Open the upper lid (13) of (10) (Fig. 1 (a), Fig. 3 (a), 5
(A)), the single wires (K1), (K2) of the power feeding trunk line where only the outer layer insulation material has been removed and are therefore still covered with the inner layer insulation material are connected to the contacts (22) of the current carrying body (20). Place each one and forcibly push down the top lid (13) to the lower limit position (arrow (a) in Fig. 1).
(Y)). Thereby, the electric wire pressing body (16) pushes each single wire of the feeding main line into the slit (23) of the contactor (22), and the opposite wall end faces (24), (24) forming the slit.
Will break through the insulating material and be electrically connected to the core wire inside. Next, the branch wire (B1) with the insulation coating removed,
By inserting the end portion of (B2) between the spring and the bottom plate (11) against the elasticity of the connection spring (30), the spring (30)
The electrical connection to the current-carrying body (22) can be made with one touch via the. This state is as shown in FIG. 1 (b), FIG. 3 (b) and FIG. 5 (b).

For each luminaire for each connector, but in the case of this example, the above operation may be performed for each pair of luminaires. The work is simple and reliable, and if some luminaires (S) have poor contact. Even if there is, there is no possibility that this will affect the continuity of the subsequent luminaire. Thus, the state after wiring is as shown in Fig. 4, and the symbol (C) in the figure
Shows the connector of the present invention.

In the connector of the second embodiment shown in FIG. 6,
The branch line can be connected in the same way as the power supply main line.
That is, the branch electric wire (1) is formed from a rigid metal and the main body (51) is held by the inner lid (12) from one or more parts, preferably from two parts, toward the bottom plate (11). A contactor (52) provided with a downward slit (53) having a width corresponding to the core wire diameters of B1) and (B2) is hung vertically. Further, on both sides of each contactor (52), from the upper surface of the bottom plate (11), 1 A pair of electric wire pressing bodies (19), (19) are provided upright, and the upper ends of the electric wire pressing bodies (19), (19) and the lower surface of the inner lid (12) for supporting the branch electric wire Since the interval between them corresponds to the outer diameter of the branch electric wire without removing the inner layer insulating material,
The branch wires (B1) and (B2) also have their internal insulation coating (B ') (Fig. 3).
Without removing (a), apply it to the contact (52) of the lower current-carrying body (50) in the same way as the power supply main line, and forcibly push the bottom plate (11) to the upper limit position to the slit (53). The electrical connection can be made. Further, the connection spring (30) in the first embodiment, in particular, the branch wire pullout preventing action by the second tip portion (32) thereof has a slit (B ') which is engaged with the inner coating (B') in the second embodiment. It is replaced by the electric wire restraint by 53).

In any of the above embodiments, as shown in FIG. 7 and FIG. 8, the holding hooks (f), (f) are provided upright on the upper lid (or lower lid) of the housing (10). And hanging bolts for ceiling
(T), a steel wire (T '), etc. are convenient because the connector (C) is sandwiched by the sandwiching hooks (f), (f) so that they can be easily supported. Further, as shown in FIG. 9, when a protrusion (H) having a small hole (h) for fixing the screw (i) is formed on the side of the housing (10), the connector (C) is formed. It can be fixed in place.

The present invention is not limited to each of the above-described embodiments, but may be modified, for example, by changing the shape and arrangement of each part so that the power feeding trunk line and the branch electric wire can be connected in directions orthogonal to each other.

<Effects of the Invention> According to the present invention, the upper chamber inside the housing is provided with an electric conductor whose bottom surface serves as a branch surface, and the lower chamber houses a connection spring in contact with the branch surface. With a simple structure in which the upper electrical conductor is provided in the chamber and the lower electrical conductor which is in constant conduction with the upper electrical conductor is provided in the lower chamber, it is not necessary to cut the power feeding main line, and the insulation of each of the constituent single wires is further achieved. It is extremely easy to take out the branch line from the main line and fix the main line and the branch line without removing the coating, so wiring work to many lighting fixtures in buildings etc. can be performed with high efficiency. become able to. Moreover, since no crossover wiring is required, even if any one of the lighting devices has a poor contact, it does not affect other lighting devices. Further, regarding the core diameter of each branch electric wire, there is a considerably large allowable range due to the spring elasticity of the contact spring, so that there are advantages such that the number of types of connectors can be reduced.

[Brief description of drawings]

FIG. 1 (a) is a vertical cross-sectional view of a connector according to an embodiment of the present invention, FIG. 1 (b) is a vertical cross-sectional view after a top lid is attached, and FIG. 2 (a) is a first cross-sectional view.
Sectional view taken along the line II-II in FIG. 2B, and FIG. 2B is FIG.
II-II-II line cross-sectional view in (B), Fig. 3 (A) is a perspective view of the three-wire system before use, and the same (B) is a perspective view after installation of the upper cover. FIG. 4 is a front view schematically showing a wiring state, FIG. 5 (a) is a sectional view taken along the line V--V in FIG. 1 (a), and FIG. 5 (b) is shown in FIG. 1 (b). Sectional views taken along line V-V-V, FIGS. 6A and 6B, which are vertical sectional views showing another embodiment and side views of essential parts, and FIGS. 7 to 9 show modifications of the housing, respectively. FIG. 10 is a front view schematically showing a conventional wiring state. In the figure, (10) is the housing, (11) is the bottom plate, (12) is the inner lid, and (1
3) is an upper lid, (16) and (19) are wire pressing bodies, (20) and (50) are current carrying bodies (upper and lower current carrying bodies), (21) and (51) are main bodies, and (22) and (22) 52)
Is a contact, (23) and (53) are slits, (30) is a connecting spring, and (3
1) is the first tip, (32) is the second tip, (33) is the base, (C)
Is a connector, (F) is a hook, (S) is a lighting fixture, (B1), (B
2) is a branch line, and (K1), (K2), and (K3) are single lines of the power feeding main line.

Front page continued (72) Inventor Masataka Takamizu 4-83-3 Shibaura, Minato-ku, Tokyo Kandenko Co., Ltd. (72) Inventor Yasushi Kaminaga 4-83-3 Shibaura, Minato-ku, Tokyo Kandenko Co., Ltd. Within (56) References Actually open 55-61978 (JP, U) Actually open 1-68662 (JP, U) Actually open 60-181862 (JP, U) Actually open 61-29473 (JP, U) Actual public Sho 56-5278 (JP, Y2)

Claims (2)

[Scope of utility model registration request] 1. An upward slit () having a width corresponding to the core wire diameter of the feeder trunks (K1), (K2), (K3) for connecting a plurality of branch conductors (B1), (B2) to the feeder trunks, respectively. A first electric conductor (20) having 24) is housed in the housing (10), abuts against the electric conductor, and is curved in the bare wire insertion direction of the branch electric wires (B1) and (B2).
In a connector in which at least one connecting spring (30) having a tip portion (31) and a second tip portion (32) inclined in the direction is also housed in the housing (10), the housing (10) is It consists of a bottom plate (11), an inner lid (12) and an upper lid (13).
The base portion (33) of (0) is held in the inner lid (12) of the housing together with the main body (21) in a back-to-back posture to the back surface of the main body (21) of the electric conductor (20), and the electric conductor (20) is directed upward. Slit (24) is top lid (13)
Fixed in a posture facing the
The wire pressing body (1
The distance between the lower end of 6) and the surface of the inner lid corresponds to the outer diameter of the feeder main line without inner layer insulating material removed, and the connection spring (30)
F cable branch connector characterized in that the bare ends of the branch wires (B1), (B2) are clamped between the front ends (31), (32) of the and the surface of the bottom plate (11). . 2. An upward slit () having a width corresponding to the core wire diameter of the feeder trunks (K1), (K2), (K3) for connecting a plurality of branch wires (B1), (B2) to the feeder trunks, respectively. Upper current carrying body (24) with 24)
And a lower current-carrying body (50) having downward slits (53) having a width corresponding to the core wire diameters of the branch electric wires (B1) and (B2) at two portions, in a connector housed in a housing (10). The housing (10) has a bottom plate (11), an inner lid (12) and an upper lid.
(13), the main body (21) of the upper electric conductor (20) and the main body (51) of the lower electric conductor (50) are held on the inner lid (12) of the housing in a back-to-back posture, and The upward slit (24) of the current-carrying body (20) is fixed in a posture facing the upper lid (13), and the wire pressing body hung from the back surface of the upper lid (13) toward the inner lid (12). The distance between the lower end of (16) and the surface of the inner lid corresponds to the outer diameter of the feeder main line without inner layer insulating material removed,
The distance between the upper end of the electric wire pressing body (19) erected from the upper surface of the bottom plate (11) toward the inner lid (12) and the lower surface of the inner lid is a branch electric wire (B1) in which the inner layer insulating material is not removed, An F cable branch connector characterized in that it is said to correspond to the outer diameter of (B2).