JPH0236229Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an improvement of a plug used for suspending a lighting fixture in a wiring duct.

<Prior art and its problems> As is clear from FIGS. 38 to 40, in the conventional plug, the plug body 1 itself also serves as a rotating operation grip, and the connection terminal 3 with the wiring duct 2 and the falling A prevention locking claw 4 is integrated.
Then, hold the plug body 1 with one hand, use the fingertips of the other hand to pull down the locking lever 5 for preventing return rotation, and rotate the plug body 1 approximately 90 degrees to prevent it from falling into the duct 2. When the duct 2 is attached to the duct 2, the conductive wire 6 and the connecting terminal 3 of the duct 2 are electrically switched on.

However, in this case, it is necessary to form the plug body 1 into a large cylindrical shape so that the plug body 1 can be held in a large cylindrical shape, and the hanging length h extending from the duct 2 must be determined to be quite long. As a result, for example, when the plug is used as a small lighting fixture for spot illuminating products displayed in a show case, the plug becomes unbalanced and large compared to the lighting equipment, resulting in an extremely unsightly appearance. In addition, since the locking lever 5 for preventing return rotation is in a position where it moves up and down, it must be pressed upward by a built-in spring (not shown). There are some problems that are difficult to deal with quickly and lightly.

<Means for solving the problem> The present invention is intended to solve this problem, and for this purpose, a horizontal arm is used as one side,
A hollow box-type plug body is formed into an overall inverted L-shaped profile when viewed from the side, with the shaft tube hanging down from the base end as the other side, and the body is fitted into the top surface of the opening of the plug body in a closed state. A pair of left and right connecting terminals whose base ends are locked and fixed to both left and right sides of the holder and whose switch tongues are bent laterally outward from the tip, and The arm of the plug body is provided with an opening/closing operation lever that is fitted through the arm of the plug body so that it can rotate freely around the vertical center line so as to be located between the left and right sides in the middle. A pair of claw plate egress/retraction ports and a terminal egress/removal port are opened, and a cam protrusion is provided at the upper end of the operating lever that can press a midway portion of both terminals, and a cam protrusion that can protrude and retract from the claw plate egress/retraction port. While providing a locking claw plate, a handle plate is also provided at the lower end of the lever that can be aligned with the lower surface of the arm of the plug body, so that the handle plate extends laterally outward from the arm of the plug body. When the lever is rotated approximately 90 degrees around the vertical center line, the locking claw plate of the lever will retract from the claw plate opening of the arm, and both terminals will retract from the terminal opening of the arm. However, when the lever is rotated approximately 90 degrees in the opposite direction so that the handle plate is aligned with the arm of the plug body, both terminals switch due to the pressing force of the cam protrusion of the lever. The device is characterized in that when the tongue piece is exposed from the terminal exit/recess port of the arm, the locking claw plate of the lever is also exposed from the claw plate exit/recess port of the arm at the same time.

<Example> Hereinafter, the specific configuration of the present invention will be described in detail based on the illustrated example.As is clear from the general views of Figs. A hollow box-shaped plug body A with an inverted L-shaped profile, an elongated terminal holder B that covers the top of its opening, a pair of left and right connecting terminals C that are held on both sides of the holder B, and In order to cause the terminals C to protrude and retract from both sides of the plug body A, it is assembled from an operating lever D that opens and closes from the lower part of the body A, and the pair of terminals C connects to the conductive wire 10 of the wiring duct E. It is intended to be used as an electrical connection.

That is, first, as extracted from FIGS. 9 to 18, the plug body A has a shaft cylinder 11 located on one side of the generally inverted L-shape, and a shaft cylinder 11 corresponding to the other side. It consists of a pair of left and right halves A1 and A2 each having a horizontal arm 12 that extends continuously and integrally from the upper end, and a shaft cylinder 11 and an arm 12 of both halves A1 and A2.
However, both of them are molded from a hard synthetic resin material and have an L-shaped cross section with a constant width facing each other.

13 is the shaft cylinder 11 in the left half body A1
This is a supporting protrusion that projects horizontally from approximately the center of the support protrusion, and has a screw hole 14 bored therein. 15 is a bag hole opened in the shaft cylinder 11 of the right half body A2 so as to match the screw hole 14;
16 is arm 1 in the left half body A1 as well.
It is also a key protrusion protruding laterally and horizontally from the protruding tip of No. 2, and this is also provided with a screw hole 17. Reference numeral 18 denotes a hole formed through the arm 12 of the right half body A2 so as to match the screw hole 17, and these holes 15,1
Both halves A1, A2 are fitted and fixed by a pair of front and rear screws 19, 20 screwed into screw holes 14, 17 from 8.

Then, in the fitted and fixed state,
Coupled with the fact that both arms 12 have an L-shaped cross section facing each other as described above, both halves A
As a result, a terminal holder receiving recess S is defined in the upper position of 1 and A2 in the form of a frame that is elongated and opened in the front-rear direction in plan view. In that case,
Both the support protrusion 13 and the key protrusion 16 hit the inner wall surface of the right half body A2 from the left half body A1, beyond the fitting surface Y-Y of both half bodies A1 and A2. As is clear from the diagram, it extends horizontally and horizontally.

Reference numeral 21 denotes a bearing groove that is installed in the half-way part of the arm 12 in both halves A1 and A2 so as to face each other correctly, and has a semicircular shape in plan view. Reference numeral 22 is a claw plate inlet/outlet located directly above the groove 21 and cut out in the vertical wall surface of both arms 12. Reference numeral 23 is a step-like notch continuous to the claw plate inlet/outlet 22. This is a terminal exit/exit opening opened in the vertical wall surface of the arm 12, and the two types of exit/exit openings 22 and 23 are exactly opposite to each other.

In addition, 24 is the shaft cylinder 1 in both half bodies A1 and A2.
1 is a mouthpiece receiving groove provided at the lower end of the
A connection pipe 25 for suspending a lighting fixture F as illustrated in FIG. 19 and for electrical wiring to the lighting fixture F is fitted into this.

Next, the terminal boulder B is also made of a hard synthetic resin material and is formed into a substantially rectangular shape in plan view as shown in FIGS. 20 to 26, and matches the receiving recess S of the plug body A. Reference numeral 26 denotes a square block projecting downward from the base end of the holder B, and a recess 27 that engages with the support protrusion 13 of the plug body A is provided on the lower surface of the square block. Reference numeral 28 designates a pair of left and right terminal receiving notches cut out on both sides of the square block 26, into which the base end of the connecting terminal C is locked and fixed.

Further, from the tip of the terminal holder B, an inverted T-shaped steady rest piece 29 also protrudes downward, and a key groove 30 cut out in the steady rest piece 29 is inserted into the key of the plug body A. It is adapted to be engaged with the protrusion 16. That is, the boulder B is positioned and locked to the support protrusion 13 and the key protrusion 16 of the plug body A at both front and rear end positions, and is held between the two halves A1 and A2 from the left and right directions. That's why.

The left and right pair of connection terminals C are pressed from a copper plate or other metal plate into a substantially symmetrical shape as shown in Figures 27 to 32, and have locking tongues bent inward at right angles from their base ends. 31 is the above holder B
It is inserted and fixed into the receiving notch 28 of. On the other hand,
The tip of the terminal C is in a position to abut against the steady rest piece 29 of the holder B, and a switch tongue piece 32 is bent outward from the tip at a right angle in the opposite direction. This corresponds to allowing the terminal to protrude and retract from the terminal protrusion and retraction opening 23 of the plug body A.

33 is a cord connecting tongue protruding downward from the middle part of the terminal C, and this is connected to the above-mentioned lighting fixture F.
The wiring cord 34 will be connected. In this case, the protruding position of the cord connecting tongue piece 33 is phase-changed in the front-rear direction with respect to both terminals C, so that it does not interfere with the support protrusion 13 of the plug body A during assembly. (See Figure 37).

Further, an opening/closing operation lever D is inserted between the opposing connection terminals C, and the lever D pushes the middle portions of the terminals C in opposing lateral directions. That lever D is the 33rd to 3rd
As extracted in Fig. 6, the rotation shaft 35 is supported in a penetrating state by the bearing groove 21 of the plug body A, and the rotation shaft 35 crosses the both claw plate egress/recess openings 22 of the plug body A from its upper end. As shown in FIG.
It consists of a handle plate 38 that extends horizontally and extends horizontally so as to fit the handle plate 2.

The locking claw plate 36 is approximately rectangular in plan view with rounded short sides, and the cam protrusion 37 is shaped into a small rectangle extending long in the same direction XX. On the other hand, the handle plate 38 is shaped into a substantially elliptical shape that extends long and narrow along a direction perpendicular to the longitudinal direction XX of the claw plate 36 and the cam protrusion 37 when viewed from above.

The cam protrusion 37 is inserted in the correct positional relationship between the two connecting terminals C, and the claw plate 36 is located at the lower level of the claw plate ejection opening of the plug body A. From 22 onwards, it is designed to function properly and smoothly. Furthermore, the handle plate 38 has a contour that can match the arm 12 of the plug body A, and faces the lower surface of the arm 12 so as to be matched with the arm 12 of the plug body A.

According to the above configuration, as is clear from FIG. 37, the terminal holder B, which has the connecting terminal C in contact with both the left and right sides, is connected to the support protrusion 13 of the plug body A and the key protrusion at both front and rear end positions. 16, and the claw plate 36 of the operating lever D is supported through the bearing groove 21 in a state where it crosses the claw plate recess opening 22 of the plug body A.
By simply fitting and fixing the two halves A1 and A2 of the plug body A to each other using a pair of front and rear screws 19 and 20, the entire plug can be easily and stably brought into the assembled state shown in Figs. 1 to 8. It is possible to finish the terminal C and its boulder B.
In addition, there is no risk of the operating lever D falling off, and there is no risk of it becoming loose.

<Function> When the plug of the present invention is installed and used in the wiring duct E, as shown in FIG. The rotation shaft 35 is rotated about 90 degrees around the vertical center, so that the locking claw plate 36 comes out from the claw plate opening 22 of the plug body A, and the pair of left and right connecting terminals C also comes out from the terminal of the plug body A. The plug is inserted into the duct E from below through the opening 23, keeping both plugs recessed inside.

After insertion, the operating lever D is moved in the direction of the arrow in FIG. 8 so that the handle plate 38 projecting laterally outward is properly aligned with the arm 12 of the plug body A, as is clear from FIG. It rotates about 90 degrees. By doing so, the locking claw plate 36 and the cam protrusion 37 are also rotated together around the vertical center line, and the claw plate 36 is exposed laterally and outwardly from the claw plate opening 22 of the plug body A. As a result, the plug engages with the groove rail 39 of the duct E, and the plug is attached so that it cannot fall.

At the same time, the pair of left and right terminals C are also pressed outward in the opposite direction at their midpoints by the cam convex elements 37 for the above-mentioned rotation, and the switch tongues 32 at the tips are expanded as well. It is exposed through the terminal outlet 23 of the plug body A, and is electrically connected to the conductive wire 10 of the duct E.

When the plug is installed, the plug body A
Since the arm 12 of the plug is buried in the duct E, and the handle plate 38 of the operating lever D is properly aligned with the lower surface of the arm 12, the hanging height H of the plug from the duct E is substantially Only the lower half of the shaft tube 11 is exposed above, making it significantly shorter and smaller, and also providing a good-looking appearance in terms of proportion to the small lighting fixture F.

In addition, when removing the plug from the wiring duct E, it is sufficient to rotate the handle plate 38 of the operating lever D in the opposite direction to the direction of the arrow above from the state shown in FIG. 6 to the state shown in FIG. Needless to say.

<Effects of the invention> As described above, the wiring plug for a lighting device according to the invention has an overall shape when viewed from the side, with the horizontal arm 12 as one side and the shaft tube 11 hanging from the base end as the other side. A hollow box-shaped plug body A formed in an inverted L-shaped profile, an elongated terminal boulder B fitted in a closed state on the top of the opening of the plug body A, and a slender terminal boulder B on both left and right sides of the holder B. The base end is locked and fixed, and the switch tongue piece 32 is interposed between the pair of left and right connecting terminals C bent laterally outward from the tip end, and the left and right midway parts of both terminals C. The arm 12 of the plug body A is provided with an opening/closing operation lever D that is fitted through the arm 12 of the plug body A so as to be rotatable around the vertical center line. In addition to opening the mouth 22 and the terminal retracting port 23, a cam protrusion 37 is provided at the upper end of the operating lever D that can press the midway portions of both terminals C, and a cam protrusion 37 that can protrude and retract from the claw plate retracting port 22. A locking claw plate 36 is provided, and a handle plate 38 is also provided at the lower end of the lever D, which can be aligned with the lower surface of the arm 12 of the plug body A. When the lever D is rotated approximately 90 degrees around the vertical center line so as to extend laterally outward, the locking pawl plate 36 of the lever D is released from the pawl plate recess opening 22 of the arm 12, and Both terminals C are the same arm 12
Insert both terminals from the terminal opening 23, and turn the lever D in the opposite direction about 90 degrees so that the handle plate 38 is aligned with the arm 12 of the plug body A.
When the lever D is rotated, the switch tongues 32 of both terminals C are pushed into the terminal protrusion opening 23 of the arm 12 by the pressing force of the cam protrusion 37 of the lever D.
Since the locking claw plate 36 of the lever D is also exposed from the claw plate opening 22 of the arm 12 at the same time as the lever D is exposed from the lever D, the problem of the prior art described at the beginning can be reliably solved. This is particularly effective in maintaining the overall size balance and creating a good appearance, especially when a small lighting fixture is used for hanging.

In addition, it is sufficient to simply insert the plug body A into the wiring duct E from below and turn the operating lever D about 90 degrees around the vertical center line, which not only provides excellent installation operability, but also Nevertheless, since the lever D is of the horizontal rotation type, there is no risk of it accidentally falling off from the duct E. Furthermore,
Since it can be easily assembled from the plug body A, the terminal holder B, the terminal C, and the lever D, it can be said to be suitable for practical use and is highly mass-producible.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the assembled state of the plug according to the present invention, Figs. 2 to 5 are a bottom view, side view, front view, and rear view, and Figs. 6 and 7 are 6-6 in Fig. 3.
Each enlarged sectional view along the line and the line 7-7, FIG.
FIG. 9 is an enlarged sectional view showing the extended and rotating state of the operating lever corresponding to the figure; FIG. 9 is a side view showing one half of the plug body;
The figures are the same top view, bottom view, and front view.
The figure is a sectional view taken along the line 13-13 in Fig. 9, Fig. 14 is a side view of the other half, Figs. 18-18 line sectional view in the figure, FIG. 19 is a side view showing how the lighting fixture is suspended from the plug, FIG. 20 is a side view showing the terminal holder extracted, and FIGS. 21 to 23 are plan views, The bottom view and front view, Figures 24 and 25 are 24-2 in Figure 20.
4 line and 25-25 line, Fig. 26 is a sectional view taken along line 26-26 in Fig. 21, Fig. 27 is a slope view showing one connecting terminal extracted, Fig.
30 is a side view and a top view, FIG. 30 is a perspective view showing the other connection terminal, FIGS. 31 and 32 are a side view and a top view, and FIG. 33 is a side view showing the operating lever. Figures 34 and 35 are a top view and a bottom view, Figure 36 is a sectional view taken along line 36-36 in Figure 34, Figure 37 is a connection terminal for the plug body,
FIGS. 38 to 40 are a side view showing the assembled arrangement of the terminal holder and the operating lever in an open state, and FIGS. 38 to 40 are a front view, a side view, and a plan view showing a conventional plug. A...Plug body, B...Terminal holder, C...
... Connection terminal, D ... Opening/closing operation lever, E ... Wiring duct, F ... Lighting equipment, H ... Hanging length,
A1, A2... Half body, 10... Conductive wire, 11
...Axis cylinder, 12...Arm, 19, 20...Screw, 21...Bearing groove, 22...Claw plate inlet,
23... Terminal recess port, 28... Terminal receiving notch, 31... Locking tongue piece, 32... Switch tongue piece,
33... Cord connection tongue piece, 35... Rotation shaft, 36
...Latching claw plate, 37...Cam protrusion, 38...Handle plate, 39...Groove rail.

Claims (1)

[Claims for Utility Model Registration] A hollow box-shaped box having an overall inverted L-shaped profile when viewed from the side, with the horizontal arm 12 as one side and the shaft tube 11 hanging down from the base end as the other side. A plug body A, an elongated terminal holder B that is fitted into the top of the opening of the plug body A in a closed state, and a base end that is locked and fixed to both left and right sides of the holder B, and a switch that can be connected from the tip end. The tongue piece 32 is attached to the arm 12 of the plug body A around the vertical center line so that the tongue piece 32 is interposed between the left and right pair of the connecting terminals C bent laterally outward and the left and right midway portions of both terminals C. It is equipped with an opening/closing operation lever D which is rotatable and fitted in a penetrating state, and allows the arm 12 of the plug body A to open a pair of left and right claw plate recess ports 22 and a terminal retract port 23, and is operated. The upper end of the lever D is provided with a cam protrusion 37 capable of pressing the intermediate portions of both terminals C, and a locking claw plate 36 capable of projecting and retracting from the claw plate protrusion/retraction opening 22. A handle plate 38 that can be aligned with the lower surface of the arm 12 of the plug body A is protruded from the lower end, and the lever D is moved vertically so that the handle plate 38 protrudes laterally outward from the arm 12 of the plug body A. When the lever D is rotated about 90 degrees around the center line, the locking pawl plate 36 of the lever D comes out from the pawl plate recess opening 22 of the arm 12, and both terminals C also come out of the arm 12.
Insert both terminals from the terminal opening 23, and turn the lever D in the opposite direction about 90 degrees so that the handle plate 38 is aligned with the arm 12 of the plug body A.
When the lever D is rotated, the switch tongues 32 of both terminals C are pushed into the terminal protrusion opening 23 of the arm 12 by the pressing force of the cam protrusion 37 of the lever D.
This wiring plug for a lighting device is characterized in that the locking claw plate 36 of the lever D is also exposed from the claw plate opening 22 of the arm 12 at the same time when the lever D is exposed from the hook plate 36.