JPH0637589Y2 - Main branch connector - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trunk branch connector suitable for branch-connecting a large number of electric appliances, typically lighting appliances, inside a building or the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 11, the wiring work of a large number of lighting fixtures (S) in a building has been a "crossover wiring" (W) from fixture to fixture, that is, one fixture is placed above the ceiling. After connecting to the power supply side of the device, use the connector for branching provided in the appliance, or if there is no connector, cut the wire and remove the insulating coating while disconnecting the branch wire from the appliance. It was customary to repeatedly perform the work of pulling out, returning to the ceiling and connecting to the next fixture for all of the lighting fixtures.

In this conventional method, it is not uncommon for the work efficiency to be low, and in the case where the wire connection in the previous device is poor, it is impossible to energize the subsequent device.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a power supply trunk line for sharing a power supply to a large number of electric appliances in a certain area, typically a lighting apparatus, through the area, An object of the present invention is to provide a trunk line branch connector that can independently and easily carry out branch wiring to individual lighting fixtures without disconnecting.

[0005]

The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 to 7 corresponding to the embodiments. The present invention has a bottom plate (11) and an inner lid (12). ) And lid (13)
A branch wire insertion port (14) is formed between the bottom plate (11) and both ends of the inner lid (12), and between the both ends of the inner lid (12) and the upper lid (13). A plurality of partition walls (41) in the direction (Y) from one side end (10a) of the housing to the other side end (10b) inside the housing (10) in which the power feeding main line through hole (15) is formed. ,(Four
1) The current carrying holder (40) is provided upright, and between the adjacent partition walls (41), (41) of the holder, a plurality of branch electric wires are electrically connected to each power feeding main line to conduct electricity. While the body (20) is housed respectively, conductively contact the lower surface of the upper plate (20a) of the current-carrying body (20), the base (33) is supported by the current-carrying body (20), and Connection springs (30), (30) for pressing are held on the bottom plate (11) to prevent the withdrawal of each branch electric wire or on the lower plate (20b) of the electric conductor located on the upper surface of the bottom plate (11). The first tip portion (31) of the connection spring is curved in the insertion direction of each bare wire end of the branch wire cables (B1) and (B2), and the second tip portion (32) is inclined in the insertion direction. A contact board (21) is conductively joined to the upper surface of the upper plate (20a) of the electric conductor (20) which is formed into a biting shape and is made of a rigid metal, and the upper surface of the board (21). Is a single line (K1), (K2), (K3) of the power supply trunk cable (K).
A contactor (22) having a substantially U-shaped cross section is erected to have a pair of tongues (22a), (22a) whose contact surfaces extend in the direction (Y) so as to elastically clamp the core wire (E) of And a structure in which electric wire pressing bodies (16) and (16) are vertically provided from the rear surface of the upper lid (13) on both sides of the contactor, thereby providing a trunk line branch connector. .

It is desirable that the connection spring provided on the lower side of the upper plate of the current-carrying member be formed by bending an appropriate spring metal plate such as brass or spring steel. The contact provided on the upper side of the current-carrying upper plate is such that the distance between the tongues is slightly smaller than the diameter of the core wire of the power feeding trunk line before the power feeding trunk line is inserted, and the upper edge of the contact piece is reversed outward. It is desirable to open in a letter shape.

The connector of the present invention is a two-wire type in which a power feeding main cable composed of two single wires is mounted, or a three-wire type in which a power feeding main cable composed of three single wires is mounted (one of which is a ground wire). Or a single-phase three-wire type), and may be a single-line type. In any case, the number of branch electric wires taken out from each single power feeding main wire is two or one.

[0008]

In the use of the main branch connector of the present invention, first, the outer layer insulating material of the power feeding main cable is peeled off, and a plurality of single wires with the inner layer insulating material are aligned with each other. Then, the inner layer insulating material is cut off. Then, open the top lid of the housing, put each single wire of the feeding main line with the insulating coating remaining only on the side surface against the above-mentioned "8" -shaped opening edge of the elastic contactor with a U-shaped cross section, and push it back by its elasticity. The single wires are pushed down by appropriate means such as a driver to the extent that they do not come apart. As a result, the inner layer insulation remaining on the side of each single wire
(F) rises upward and the bare core wire (E) makes “line contact” with the contact on both sides (see FIG. 7). After that, when the upper lid of the housing is closed, the core wire is held in a state of being pinched by the contactor by the electric wire pressing body vertically provided from the upper lid.

Next, each single wire end portion of the branch electric wire cable in which the insulating coating is peeled off to make it bare is to resist the elastic force of the connection spring and the spring and the bottom plate, or the lower plate of the electric conductor located on the upper surface thereof. By inserting between the two, it is possible to make an electrical connection to the current-carrying body with one touch via the spring. The second tip portion of the connection spring bites into the bare single wire of the branch electric wire, so that the connected state is firmly maintained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 6, a synthetic resin housing
A cavity is formed over the bottom plate (11), the inner lid (12) and the upper lid (13) which form (10), and a plurality of partition walls (41), (4
The current holder (40) in which (1) is erected is tightly fitted.
The bottom plate (11) and the inner lid (12) are positioned by the pin (12a) and joined by, for example, an adhesive, but the inner lid (12) and the upper lid (13)
Can be opened and closed by elastically fitting the lower end enlarged portion of the downward engaging leg (13a) of the upper lid into the jaw portion (12b) of the engagement hole (12a) on the side surface of the inner lid.

[0011] Single lines (K1) and (K
2) and (K3) are electrically conductive to the two single wires (B11), (B21) and (B12), (B22) and (B13), (B23) of the branch wire cables (B1) and (B2), respectively. An electric conductor (20) connected to the is housed between the adjacent partition walls (41) and (41) of the holder (40). The base (33) of the connection spring (30), which is held by the hooking piece (20c) on the bottom surface of the current carrying body and fixed in position by the stopper (20d), has its base (33) attached to the bottom surface of the upper plate (20a) of the current carrying body (20). In order to prevent conductive wires (B11), (B12), etc., from coming out of contact with each other in an electrically conductive manner, the first tip (31) is curved in the insertion direction of the bare wire of the single wire, and the second tip is bent.
The shape (32) is inclined in the insertion direction and bites into it.

On the other hand, the current-carrying body made of a rigid metal
A contact substrate (21) is electrically conductively joined to the upper surface of the upper plate (20a) of the (20), and a core wire (E) such as a feeder main cable single wire (K1) is attached to the upper surface of the substrate (21). A pair of tongues (22
A contact (22) having a substantially U-shaped cross section having a) and (22a) is erected, and the wire pressing bodies (16), ( 16) is installed vertically.

The partition wall (41), and thus the current carrying body (20), of the housing (10) having the branch wire insertion port (14) at the lower end of both ends and the power feeding trunk line through port (15) at the upper part. It is arranged in the direction (Y) from the one end (10a) to the other end (10b), and the inner surface of the tongue piece (22a) of the contact (22) is also in the same direction (Y). .

In use, the upper lid (13) is opened, and the inner layer coating (F) on the upper and lower surfaces is striped and partially cut, that is, the length covering the two contacts (22), (22) is cut off. A single wire of the feeder line of the chisel is pushed into the contactor (22) from above. As a result, as the residual coating is “twisted” upward and “rolled up”, the core wire (E) of the single wire “line contacts” the contactor on both sides, as shown in FIG. Even if the load on the cables (B1) and (B2) is about 20 amps, power can be supplied without fear of heat generation at the contact portion. After that, when the upper lid (13) is closed, the pressing body (16) further pushes down the power feeding main line slightly, and the state in which the main line is lifted thereafter is prevented.

After such installation of the power supply trunk line or before, the bare single wires (B11) of the branch wires are inserted into the insertion ports (14).
If it is strongly pushed in from, the core wire is electrically connected to the current-carrying body in a non-pullable manner by the cooperative action of the first tip part (31) and the second tip part (32) of the connection spring (30), and therefore the power feeding trunk line. Will be connected with.

The connector of the present invention thus completed the branch connection
(C) is arranged and fixed between the base (T) of the ceiling and the ceiling lining (U) below the base (T) as shown in FIGS. That is, the flat portion of the fastener (A) is placed on the upper lid (13), and the J-shaped notches (J) and (J) opened in opposite directions are fitted to the screw rod (N) on both legs of the fastener. Turn it as shown by the arrow (M).

The screw rod (N) is lined from the ceiling base (T).
(U) is for suspending, and a large number of lighting fixtures (S), (S) are attached to the lower surface of the lining (U). In this way, the conventional crossover wiring (W) as shown in FIG. 11 becomes unnecessary, and the disadvantage thereof is eliminated.

The present invention is not limited to the above embodiment,
For example, instead of the single holder (40) with the above four partition walls,
Three unit holders of the same shape each with a pair of side walls (3
(In the case of a wire type) is accommodated in the hollow portion of the housing in a parallel state, or the cross-sectional shape of the main part of the contactor (22) excluding the upper edge is formed into a literal "U" shape. And so on.

[0019]

As is apparent from the above description, according to the present invention, a current carrying member is provided inside the housing, a contactor is brought into contact with the upper surface thereof, and a connection spring is brought into contact with the lower surface thereof. With this structure, it is not necessary to cut the power supply main line, and the inner layer coating of each of the constituent single wires is in a "line contact" state with the connector by stripping and removing only the upper and lower surface parts in a striped manner.
In other words, it can be connected to withstand a high load, and the branch wire can be connected to the trunk line and fixed to the connector at the same time simply by inserting the bare end strongly, so that many lighting fixtures in buildings etc. It becomes possible to carry out the wiring work to etc. with high efficiency.

Moreover, since no crossover wiring is required, even if any one of the lighting fixtures has a poor contact, it does not affect other lighting fixtures. Further, the core diameters of the feeder main line and each branch electric wire have a considerably large allowable range due to the spring elasticity of the contactor and the contact spring, so that there are advantages that the number of types of connectors to be prepared can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded vertical sectional view of a connector according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the same assembled state.

FIG. 3 is a 3-3 in FIG. 2 showing a usage state in the case of a three-wire system.
Sectional drawing along the line.

FIG. 4 is a sectional view taken along line 3-3 of FIG.

5 is an exploded perspective view of the connector of FIG.

6 is a cross-sectional view taken along line 6-6 in FIG.

FIG. 7 is a sectional view corresponding to FIG. 6 in the same assembled state.

FIG. 8 is a front view of the connector of FIG. 1 attached to a building member.

9 is a sectional view taken along line 9-9 of FIG.

FIG. 10 is a front view schematically showing a wiring state using the connector of FIG.

FIG. 11 is a front view schematically showing a conventional wiring state.

[Explanation of symbols]

 (10) Housing (11) Bottom panel (12) Inner lid (13) Upper lid (14) Branch wire insertion port (15) Power feed through hole (16) Wire pressing body (20) Current carrying body (20a) Upper plate (21) Contact board (22) Contact (22a) Tongue (30) Connection spring (31) First tip (32) Second tip (33) Base (40) Holder (41) Partition (C) Connector (S) Lighting equipment (B1) Branch wire cable (B2) Branch wire cable (B11) Branch wire single wire (B12) Branch wire single wire (B13) Branch wire single wire (B21) Branch wire single wire (B22) Branch wire Single line (B23) Branch line single line (K) Power feeding main line cable (K1) Power feeding main line single line (K2) Power feeding main line single line (K3) Power feeding main line single line

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eizo Date 4-83-3 Shibaura, Minato-ku, Tokyo Kandenko Co., Ltd. (72) Inventor Yasushi Kaminaga 4-83-3 Shibaura, Minato-ku, Tokyo Stocks Company Kandenko

Claims (1)

[Scope of utility model registration request] 1. A bottom board (11), an inner lid (12), and an upper lid (13), and a branch wire insertion port (14) is formed between both ends of the bottom board (11) and the inner lid (12). And a housing in which a power feeding main line through hole (15) is formed between both ends of the inner lid (12) and the upper lid (13).
Inside (10), from one end (10a) of the housing to the other end
There is provided a current carrying holder (40) in which a plurality of partition walls (41), (41) in the direction (Y) toward (10b) are erected, and the adjacent partition walls (41), (41) of the holder are An electric conductor (20) for conductively connecting a plurality of branch electric wires to each feeding main line is housed in each space, and conductively contacts the lower surface of the upper plate (20a) of the electric conductor (20). The base (33) is supported by the electric conductor (20), and the connection springs (30) and (30) for pressing the branch wires (11) in a state of preventing the branch wires from being pulled out are held. The first tip portion (31) of the connection spring is curved in the direction of inserting the bare wire end portions of the branch wire cables (B1) and (B2), and the second tip portion (32) is in the insertion direction. The upper plate (20) of the current-carrying body (20) that is inclined and bites into it and is made of a rigid metal is used.
The contactor board (21) is conductively joined to the upper surface of (a), and each single wire (K1) of the feeder main cable (K),
(K2), (K3) core wire (E) is sandwiched by a U-shaped cross-section having a pair of tongues (22a), (22a) extending in the direction (Y) in order to elastically press A trunk branch connector characterized in that a child (22) is provided upright, and electric wire pressing bodies (16) and (16) are vertically provided from the back surface of the upper lid (13) on both sides of the contact.