KR20010070930A - Harness plug for plug socket with breaker - Google Patents

Abstract

PURPOSE: To provide an electric outlet that allows the recovery operation of a branch breaker to be carried out then and there, and has a harness plug that improves workability. CONSTITUTION: Three electric outlet units 30 and one breaker unit 40 are stored in a container 1. The electric outlet units 30 expose their surf aces in which plug insertion holes are formed through three exposing windows 21a-21c formed in the container 1. The breaker unit 40 exposes its handle 42 to the surface in which the exposing windows 21a-21c formed in the container 1. The breaker unit 40 functions as a branch breaker and the handle 42 can be used for recovery operation without going to the installation location of a distribution panel when the breaker unit 40 is tripped. An operation handle 77b is installed in a harness plug 70, so that the cores of a cable 60 can simply be disconnected by operating the operation handle 77b and thereby, workability is improved.

Description

Harness plug for outlet with breaker {HARNESS PLUG FOR PLUG SOCKET WITH BREAKER}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harness plug for breaker attachment outlets used in indoor wiring systems in which wiring spaces are formed by so-called pre-access floors.

Recently, a large number of electric devices such as computers, word processors, and copiers are used in offices, and so-called wiring floods in which a plurality of wires are laid are a problem.

In order to solve this kind of problem, a pre-access floor has been conventionally used in which a flooring material is laid at an appropriate interval on the flooring material and a space between the flooring material and the flooring material is a wiring space.

In the indoor wiring system using the free access floor, the main circuit for power from the branch breaker built in the distribution board is wired in the wiring space between the floor ground material and the flooring material, and installed in a proper place on the trunk line. It is contemplated to detachably connect a wiring mechanism such as an outlet to the branch connection portion of the branch connection device.

That is, the trunk line is wired at the time of laying the flooring material, and the wiring mechanism is connected to the branch connection device near the place where the wiring mechanism is installed.

This configuration has the advantage that only the flooring material between the wiring device and the branch connection device needs to be removed and can be easily installed when changing the position of the wiring device of the already installed indoor wiring system, adding or deleting the wiring device. have.

In the conventional harness plug connected to the branch connection part of the branch connection device, a recess in which the branch connection part of the branch connection device is coupled is formed on the front surface of the housing, and the plurality of core wires of the cable connected to the recess part respectively. The tip of the two plug blades is to be removed, and the plug blades are fitted to the female contacts installed inside the branch connection device to make electrical connections.

However, in this type of harness plug, the core of the cable is connected to the base end of the plug blade to connect the cable. Therefore, it is cumbersome to replace the cable when the length of the cable does not match. In addition, since no rating or the like is displayed, it is difficult to know the rating of the harness plug, the breaker with a breaker, etc. at the time of construction or maintenance of the wiring, and there is also a problem of poor workability.

The present invention has been made in view of the above problems, and an object thereof is to provide a harness plug for a breaker with a socket having improved workability.

1 is a cross-sectional view showing an embodiment.

Figure 2 is an exemplary view showing a state connected to the breaker attachment outlet through a cable.

3 is a perspective view showing a state in which the harness plug in the embodiment is connected to a joint box.

4A and 4B are explanatory diagrams showing attachment and detachment of a harness plug to a joint box in the embodiment;

5 is a perspective view showing a configuration example of an indoor wiring system using an embodiment.

(Explanation of symbols on the main parts of drawing

1: gas 30: outlet unit

40: breaker unit 55: card

60 cable 70 harness plug

71: housing 71a: body

71b: cover 72: main part

73: plug blade 74: Rocce

75: wire insertion hole 76: lock spring

77: release button block 77b: operation handle

79: mounting portion 80: joint box

In order to achieve the above object, the present invention provides a branch connection device for wiring a power trunk in a wiring space formed between a floor ground material and a floor material laid at a suitable interval on the floor ground material, and installed at a suitable place on the trunk line. A cable having a plurality of core wires connected to an outlet unit in a body of a breaker with a breaker used in an indoor wiring system for forming a wiring network by detachably connecting a wiring mechanism to a branch connection of A harness plug that detachably couples to the branch connection portion, and the insertion hole of the plug in the outlet unit and the operation handle in the breaker unit are provided on the front side of the body, and the harness plug is fitted into the branch connection portion. A recess is formed on the front side of the housing, and a plurality of core wires of the cable are respectively formed in the recess. The front end portions of the plurality of plug blades connected to the end face face each other, and at the rear end of the housing, a cable insertion hole for inserting the core wires of the cable is formed, and the contact is made in contact with the core wire of the cable inserted at the cable insertion hole. A piece is formed in the base end of each said plug blade, and the several lock spring which elastically clamps a core wire between these contact pieces, and this lock spring are removed from a contact piece. And a release button for releasing the elastic pinching state of the core wire, wherein the operation handle for manipulating the release button is exposed on the surface of the housing, and the correspondence relationship between the breaker unit and the outlet unit is easy to understand. The breaker can be easily checked by the breaker unit, and when it is blocked, the return operation can be performed in the field without having to go to the place where the distribution board is placed. can do.

If the length of the cable does not match and the replacement is necessary, the cable can be easily disconnected by operating the operation handle, and the core of the replaced cable can be inserted only at the wire insertion hole to connect the lock spring with the contact piece. Since the core wire is elastically sandwiched between them, the cable can be connected, so that the reconnection work can be facilitated, and the cable can be easily detached from the harness plug by operating the operation handle.

In addition, the display unit for indicating the electrical characteristics and the use is formed on the side of the housing of the harness plug, it is easy to know the correspondence relationship between the breaker unit and the outlet unit, and can easily check the blocking state by the breaker unit. In addition, in case of disconnection, return operation can be performed in the field without going to the place where the distribution panel is placed.

In addition, the display unit can inform information necessary for electrical wiring, such as electrical characteristics and use of the breaker attachment socket having a harness plug.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described with reference to drawings.

2, the harness plug 70 is connected to the front-end | tip part of the cable 60, and the bushing 67 is arrange | positioned at the intermediate part of the cable 60. As shown in FIG.

In addition, the bushing 67 is fixed to the cable 60 in a form wound around the outer periphery of the cable 60, and by pressing a part of the hook 68, the winding force to the cable 60 is relaxed to thereby release the cable 60. It is configured to move to the desired position.

In other words, the bushing 67 is configured to have an elastic force in the direction of reducing the inner diameter and to be supported by the cable 60 by frictional force, and to press the hook 68 against the elastic force to enlarge the inner diameter.

In the bushing 67, the mounting groove 69 is formed in the site | part from the base | substrate 1 rather than the hook 68 over the whole pole.

This mounting groove 69 has a width approximately equal to the thickness of the flooring material 90 (see FIG. 5), which will be described later.

The harness plug 70 of the present invention, which is connected to the front end of the cable 60 withdrawn from the base 1 of the breaker attachment outlet, is a joint box 80 as a branch connection device used in the indoor wiring system described in the prior art. It is connected to be able to take in and take away).

As shown in FIG. 3, the harness plug 70 has a recess 72 formed on the front surface of the housing 71 that engages with the connector 84, which is a branch connection portion of the joint box 80, and the recess 72. In the inside, a plurality of plug blades 73 to which a plurality of core wires of the electric wire are respectively connected are disposed so that the tip faces the opening of the recess 72.

The housing 71 of the harness plug 70 is composed of a body 71 a and a cover 71 b as shown in FIG. 1.

The body 71a is formed in a substantially box shape with an upper surface and a front surface open, the inside of which is separated into a front and rear space by a partition wall, and the connector portion 84 of the joint box 80 is inserted by an element formed in front. An element 72 is formed.

The partition wall is provided with a fixing part for pressing and fixing the three plug blades 73. When the plug blade 73 is mounted on the fixing part, the tip of the plug blade 73 is disposed in the element 72 side by side. .

The inner space behind the body 71a is further divided into two compartments formed by two rows of partition walls formed along the longitudinal direction of the body 71a, and the plug blades 73 are accommodated in each compartment.

At the rear end of the body 71a, three recesses serving as the wire insertion holes 75 are formed in a state of being engaged with the cover 71b.

Each recess has a diameter of the inside of the wire insertion port 75, and is formed in a shape capable of reliably positioning the core wire of the cable 60 inserted into the wire insertion port 75.

The plug blade 73 is formed in a plate shape with a conductive material, and the base is bent so as to contact one inner surface of each compartment, and the cable 60 is arranged on the lower surface in the transverse direction at least on the cover 71b side of the base. The contact piece 73a which the core wire of () contact | connects is formed.

In the lower surface of the central portion of the plug blade 73, a pair of temporary fixing pieces 73b, which are temporary fixing parts for positioning and temporarily fixing the body 71a, are formed.

As shown in FIG. 1, ribs 58 protrude from the bottom surface corresponding to the temporary fixing pieces 73b of the respective sections separated by the partition wall of the body 71a, and the ribs 58 are temporarily formed. The fixed piece 73b is press-fitted in the click formed in the opposing inner end, and the plug blade 73 is temporarily fixed to the body 71a.

A temporary fixing piece consisting of protrusions having a click formed at both ends is formed on the plug blade 73, and ribs formed of two rows of ribs are formed on the inner bottom surface of the body 71a, and the temporary fixing pieces are coupled between the ribs. You may do so.

By the way, of the three plug blades 73, the plug blade to which the grounding core wire of the cable 60 is connected is long or protrudes so that it may protrude slightly ahead of other plug blades.

This is because when the other plug blade is connected to the female contact of the joint box 80, first, the plug blade to which the ground wire is connected is first connected to the female contact of the joint box 80. This is to ensure that the blade is separated last, to ensure safety.

A core wire of the cable 60 is burnt on the contact piece 73a between the contact piece 73a of the respective plug blades 73 and the rear end of each section divided into three sections of the body 71a. The lock spring 76 that is sexually pressed is disposed.

The cover 71b is formed in a substantially box shape in which a lower surface and a front surface of the inner structure are substantially the same as the body 71a, and an insertion hole 48 through which the fixing rivets 47 are inserted into two upper surfaces. ) Is formed, and the insertion hole formed in the body 71a corresponding to the insertion hole 48 and the insertion hole 48 is inserted with a fixed rivet 47 to caulk the tip to cover the body 71a. 71b) is mounted.

On the inner bottom surface of the element of the cover 71b which forms the recessed portion 72 together with the element of the body 71a, the harness plug 70 fitted into the reverse insertion prevention groove of the connector portion 84 of the joint box 80 is provided. A projection 78 as a misconnection prevention portion formed along the insertion direction of the cross section is formed, thereby preventing the reverse insertion or incorrect connection of the joint box 80 having different ratings or uses.

In this type of harness plug 70, in order to prevent separation from the joint box 80, as shown in FIGS. 4A and 4B, the locking groove 85 formed in the joint box 80 may be locked and separated. A lock body 74 formed of a material having flexibility such as a synthetic resin to be engaged is provided, and the lock body 74 is provided on the cover 71b side.

In the conventional harness plug, the same body as that of the lock body 74 is formed on the body side. However, since the shape of the harness plug is increased, the lock body 74 is provided only on the cover 71b side in this embodiment. ), The harness plug 70 is downsized.

In order to attach the lock body 74 to the cover 71b, a central portion of the upper surface of the cover 71b is concave to form a mounting portion 79 of the lock body 74. An opening is formed in the part corresponding to the element of this mounting part 79, and the locking click 74a of the lock body 74 protrudes in the recessed part 72 in this opening. And the fixed part which fixes the lock body 74 is formed in the rear part of this opening.

Here, in the lock body 74, an L-shaped fixing piece having an approximately L-shaped cross section is disposed downward from the center lower surface, and two fixed click pieces 74c elastically locked to the cover 71b are disposed on the lower surface of the fixing piece downward.

Moreover, the engaging piece which elastically engages in the cover 71b is formed in the upper surface of the front end surface in which the locking click 74a was formed.

Moreover, the slipper 74d which consists of several protrusions formed in the horizontal direction is formed in the upper surface operated with a finger at the time of unlocking of the lock body 74. As shown in FIG.

In the mounting portion 79 of the cover 71b on which the lock body 74 is mounted, an insertion hole for inserting the fixed click piece 74c into the fixed portion is formed, and the fixed click piece 74c is hooked to the insertion hole. The lock body 74 is attached to the mounting portion 79 by fitting.

The rear portion of the fixing portion is larger than the pressing operation portion 74d of the lock body 74 so that the pressing operation portion 74d can be pressed by a finger.

That is, when the pushing operation part 74d of the lock body 74 is pushed downward, the locking click 74a side rotates upwards by using the fixed piece 74b as a support point, and the locking click 74a of the joint box 80 will rotate. It is separated from the locking groove 85 of the connector portion 84, so that the harness plug 70 can be separated from the joint box (80).

The lock body 74 is attached to the mounting portion 79 as follows.

First, the fixed click piece 74c of the lock body 74 is inserted into the insertion hole, and then the elastic piece 74b is placed on the fixed part such that the rear end face is engaged with the rear step part of the fixed part. The click formed in the front surface of the lower part of the click piece 74c is fixed to the cover 71b by engaging with the opening edge inside the insertion hole.

Here, in the present embodiment, the distance from the rear end surface of the fixing piece 74b to the front surface of the base of the fixed click piece 74c is greater than the distance between the step portion at the rear end of the fixing part and the opening edge in front of the insertion hole. The spacing is made slightly larger, and the elastic force is applied to the transverse piece of the fixing piece 74b forward by the step portion of the fixing part, so that the fixed click piece 74c is securely engaged.

Moreover, when a projection part is formed in the back of the partition of the body 71a, and the cover 71b which temporarily fixed the lock body 74 is covered by the body 71a, the partition of the cover 71b corresponding to the partition of the body 71a will be carried out. And the lower portion of the fixed click piece 74c are sandwiched between the protrusion and the protrusion so that the lock body 74 is fixed.

That is, in the present embodiment, the fixed piece 74b and the fixed click piece 74c become the fixed parts of the lock body 74, and the fixing part and the insertion hole elastically unevenly engage the fixed parts of the lock body 74 to lock the body. It becomes a temporary fixing part which temporarily fixes 74, and becomes a clamping part which clamps the said fixing part of the lock body 74, when a partition and a projection part have couple | bonded the body 71a and the cover 71b.

By the way, when covering this cover 71b to the body 71a, it respond | corresponds to the quick-conect part of the electric wire (core wire of the cable 60) which consists of the lock spring 76 and the contact piece 73a. The release button block 77 is stored there.

The release button block 77 releases each lock spring 76 from the corresponding contact piece 73a at the same time to release the elastic pinching state of the core wire, and to one end of the release portion 77a. And an operation handle 77b extending from the exposed portion formed on the rear end of the cover 71b and exposed to the surface of the cover 71b. The operation handle 77b is formed to a size capable of manual operation.

When the operation handle 77b is pressed, the release portion 77a is rotated by the pressing operation of the operation handle 77b, the lock spring 76 is bent in the direction away from the contact piece 73a, and the elastic stop state of the core wire is Is released.

1 and 4A and 4B, the recessed portion 54 is formed on the surface of the cover 71b corresponding to the element, and the card 55 describing the rating of the breaker attachment outlet, etc. 54, the transparent cover 56 formed at both edges of the engaging grooves formed at both end surfaces of the recessed portion 54 and the engaging piece which can be engaged with the engaging portion so as to be detachable, covers the card 55. Since it is attached to, the rating of the breaker with the harness plug 70 having the harness plug 70 can be easily read from the card 55.

In the harness plug 70, the body 71a and the cover 71b are fixed with two fixed rivets 47, and the rear end of the cover 71b is formed with a flat surface.

Next, the joint box 80 into which the harness plug 70 is inserted will be described. As shown in Figs. 3 and 4A and 4B, the joint box 80 has a connector portion 84 inserted into the recessed portion 72 of the harness plug 70 on the insertion side, and the connector portion ( A plurality of female contacts each receiving the plug blade 73 of the harness plug 70 inserted from the plug blade insertion hole 86 formed on the front surface of the structure 84 is provided inside.

As shown in Fig. 3, the housing 87 of the joint box 80 is composed of a body 87a and a cover 87b, and forms insertion holes for passing a fixed rivet through four places on the upper surface of the cover 87b. Doing.

In response to the insertion hole, a insertion hole for inserting a fixed rivet is also formed in the body 87a. The tip of the fixed rivet inserted into the insertion hole is caulked to cover the body 87a with a cover 87b. have.

The body 87a is formed in a substantially box shape opened on the upper surface, and the front accommodating portion, which is an inserting portion in a state of being engaged with the cover 87b, is formed by two rows of partition walls formed along the longitudinal direction of the body 87a. It is divided into four compartments, and a female contact is stored in each compartment.

The partition wall is formed over the entire length of the female contact point from the front housing portion to the rear side. And the front part corresponding to each division is provided with the recessed part used as a plug blade insertion opening.

Also, in the case of the joint box 80, the main portion serving as the wire insertion opening for inserting the core wires 83a, 83b, 83c of the cable 83 between the lock spring and the contact piece at the rear end of the body 87a. Forming.

Each recess has a narrow diameter inside the wire insertion hole, and is formed in a shape capable of reliably positioning the core wire inserted into the wire insertion hole.

The inner structure of the cover 87b is formed in substantially the same structure as that of the body 87a. When the cover 87b is covered on the body 87a, the cover 87b corresponds to the fastening portion of the wire made of the lock spring and the contact piece. A release button block is stored.

The release button block includes a release portion for releasing each lock spring from the corresponding contact piece at the same time to release the elastic pinching state of the core wire, and an extension portion extending from one end of the release portion to cover the opening formed at the rear end of the cover 87b. It consists of an operation handle 88 exposed to the surface of 87b, and the operation handle 88 is formed in the size which can be operated by hand. When the operation handle 88 is pressed, the release portion is rotated by the pressing operation of the operation handle 88, and the lock spring is bent in the direction away from the contact piece to release the elastic locking state of the core wire.

In this way, when the wire connection to the joint box 80 and the harness plug 70 has a fastening structure having a release function, when the length of the cable does not match and replacement is required, the cable can be easily operated by operating the release button block 77. 60) can be removed, and by simply inserting the replaced core of the cable from the wire insertion hole, the core wire is elastically clamped between the lock spring and the contact piece, so that the cable can be connected and the reconnection can be easily performed. Thus, the cable replacement work can be made very simple.

The harness plug 70 is connected to the joint box 80 in the direction of the recessed portion 72 of the harness plug 70 and the connector portion 84 of the joint box 80 so that the protrusion 78 is fitted into the reverse insertion prevention groove. By fitting the harness plug 70 into the joint box 80, the plug blade 73 is inserted into the plug blade insertion hole 86 so that each plug blade 73 is connected to the female contact point. At this time, the locking click 74a of the lock body 74 is engaged with the locking groove 85, thereby preventing departure.

And when removing the harness plug 70 from the joint box 80, the pressing operation part 74d of the lock body 74 is pressed, and the locking click 74a of the lock body 74 and the locking groove of the connector part 84 are carried out. The locking state with (85) is released, and the harness plug 70 is pulled back.

When performing wiring construction using the breaker attachment outlet connected to the harness plug 70, as shown in FIG. 5, the unit dimensions of a substantially square unit are placed on the support leg 92 which is installed on the floor support material 91. By mounting a plurality of floorings 90, a pre-access floor is constructed, and the space between the floor coverings 91 and the floorings 90 is used as a wiring space.

In this wiring space, the trunk line 83 connected to the main breaker 82 of 50 to 60A stored in the distribution panel 81 is wired. In addition, the joint box 80 is connected to the trunk line 83 at appropriate intervals.

Here, by connecting the harness plug 70 to the connector portion 84 of the joint box 80, the breaker attachment outlet attached to the mounting surface 5 can be connected to the trunk line 83.

As the joint box 80, in addition to providing two connector portions 84 as shown in FIG. 3, those provided with four connector portions 84 may be used. In the joint box 80, the wire insertion hole for connecting the trunk line 83 and the connector portion 84 for connecting the harness plug 70 are formed on the same surface. In this joint box 80, the coupling relationship with the harness plug 70 is the same as described above.

According to the invention of claim 1, when the length of the cable does not match and the replacement is necessary, the cable can be easily disconnected by operating the operation handle, and only by inserting the core wire of the replaced cable at the wire insertion hole, The core wire is elastically sandwiched between the contact piece to allow the cable to be connected, to facilitate the reconnection work, and the cable can be easily separated from the harness plug by operating the operation handle.

According to the invention of claim 2, since the operation handle can be operated by hand, the cable can be easily separated from the harness plug without using a special tool.

According to the invention of claim 3, the display unit displayed on the side of the harness plug housing has an effect that the information necessary for the electrical wiring such as the electrical characteristics and the use of the breaker attachment outlet connected to the harness plug can be informed.

Claims (3)

Branch of the branch connection device installed in the wiring space formed between the floor ground material and the floor ground material at a suitable distance from the floor ground material, and installed in a suitable place on the trunk line. In the construction of the harness plug which is detachably connected to the branch connection part, it is provided at the end of the cable connected to the breaker attachment outlet used in the indoor wiring system in which the wiring network is formed by detachably connecting the wiring mechanism to the connection part. The recessed portion to which the branch connection part fits is formed in the front surface of the housing, in which the core parts of the cable face the leading ends of the plurality of plug blades connected to the proximal end, and the rear end of the housing Cable insertion ports for inserting the core wires respectively are formed, and contact pieces contacting the core wires of the cable inserted in the cable insertion ports are formed at the base end of each of the plug blades, and the core wires are elastically disposed between these contact pieces. And a plurality of lock springs for pinching, and a release button for removing the lock springs from the contact pieces to release the elastic pinching state of the core wire, and exposing an operation handle for operating the release button to the surface of the housing. A harness plug for a breaker with an outlet, characterized in that it is made. The harness plug for a breaker-attached outlet according to claim 1, wherein the operation handle of the harness plug is formed to a size capable of hand operation. A harness plug for a breaker with a breaker, characterized in that the display unit further displays an electrical characteristic or use on the side of the harness plug housing.