JP2001283950A - Power source terminal board and lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a power source terminal board that can reduce fluctuations in pushing operation force of the release lever which is formed integrally with a body. SOLUTION: The power source terminal board comprises a box 21, having a wall 35 where a plurality of wire insertion holes are opened and a quick connection terminal built in the box and clipping wires inserted in each wire insertion hole. The terminal comprises a pair of inclined chain-locking pieces 84b, 84c capable of elastic deformation. The power source wire release levers 45, 46, formed integrally with the wall, comprise a terminal push portion 48 crossing over the chain locking pieces of the hetero-pole quick connection terminal at the top end of the arm 47. The terminal push portion 48 comprises a pair of terminal contact projections 48a, which make contact with the chain- locking pieces and an engaging projection 48b positioned between these. A guide projection 71 is provided at the inner face of a cover 26. When the lever 45, 46 are pushed to the inside, the engaging projection 48c makes contact with the inclined guide face 71a of the projection 71 from the other side and prevents the terminal push portion 48 from deforming in line with the inclined chain locking pieces 84b, 84c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply terminal block for relaying a power supply line and wiring in a fixture, and to a lighting fixture such as a fluorescent lighting fixture provided with the terminal block.

[0002]

2. Description of the Related Art A power supply terminal block is housed in a synthetic resin housing.
A pair of quick connection terminals for the positive and negative electrodes of the power supply are built in, and a quick connection terminal for ground is built in. The body of the housing is provided with wire insertion holes individually corresponding to each quick connection terminal, and the core wires of the wires inserted into these insertion holes are:
By being pinched between the wire receiving portion of each quick-connecting terminal corresponding to the insertion point and the elastically deformable lock piece obliquely opposed thereto, it is connected to the corresponding quick-connecting terminal. .

[0003] The power supply terminal block is provided with release means for removing the electric wire connected as described above as necessary. Among these releasing means, there is known a releasing means provided with a releasing lever which is formed integrally with the wall portion of the body where each electric wire insertion hole is opened and which can be elastically deformed by being pushed by a tool such as a screwdriver. . This type is excellent in that the number of parts is small and the configuration is simple.

The release levers are provided so as to be in a straight line facing each other, and are provided on both upper and lower surfaces of a terminal pressing portion having free ends thereof so as to press a locking piece of a quick connection terminal. A projection and a pushing tool receiving projection that curves in the width direction of the release lever are formed respectively.

The lock piece of the conventional quick-connecting terminal has an elastically deformable lock piece main part provided obliquely with respect to the electric wire receiving part, and protrudes from the tip of this main part in the longitudinal direction of the lock piece. And the lever receiving projection which is not easily deformed. When the electric wire is released, the lever receiving projection, which is the free end of the locking piece, is pushed by the terminal contact projection of the release lever, and the locking piece is released. Are elastically deformed. However, in this configuration, there is an inconvenience that the release stroke required for the release lever formed integrally with the body is large,
As a result, the stress applied to the release lever is large,
The release lever is likely to be excessively deformed due to the release operation and is likely to be damaged.

In order to solve such a problem, the present inventor has proposed a configuration in which the slanted locking piece of the quick-connecting terminal does not have the lever receiving convex portion, and has an intermediate portion in the longitudinal direction of the locking piece. We have developed a power supply terminal block that can release the electric wire by pushing the part with the terminal contact projection that is integrally provided from the release lever, but it has been found that there is still room for improvement.

That is, in this configuration, the terminal contact projection protruding from the back surface of the terminal pressing portion of the release lever integrally formed with the synthetic resin body is brought into contact with the oblique lock piece of the quick connection terminal. In order to elastically deform the lock piece, the terminal contact protrusion is elastically deformed so as to follow the inclination of the lock piece around its base as the pushing of the lock piece proceeds. Due to this deformation, it is difficult to accurately apply the pushing operation force of the release lever to the lock piece, and the pushing operation force varies to be almost insufficient. Therefore, in some cases,
There is a possibility that the release lever may be forcibly pushed and operated, resulting in deformation or breakage.

On the other hand, there is no restriction on the configuration in which the longitudinally intermediate portion of the oblique lock piece is pushed by the release lever to release the electric wire as described above, but generally, the lock piece of the quick connection terminal is excessively pushed in. In the conventional power supply terminal, in order to prevent it from being damaged, a stopper convex portion facing the back side of the lock piece at a predetermined distance is provided integrally with a synthetic resin cover connected to the body. The stopper protrusion restricts the elastic deformation of the lock piece.

However, since the variability in the dimensions of the quick-connecting terminal and the stopper convex portion of the cover is inevitable, the amount of pressing of the release lever required when releasing the electric wire is accordingly required.
That is, there is a problem that the pushing operation force varies.

[0010]

SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply terminal block and a lighting fixture which can reduce the variation in the pushing operation force of a release lever formed integrally with a body.

[0011]

According to a first aspect of the present invention, there is provided a power supply terminal block comprising a body and a cover connected to the body, wherein the body is provided with a positive electrode. Power supply side wire insertion hole, positive electrode power supply side wire insertion hole, negative electrode power supply side wire insertion hole, negative electrode power supply side wire insertion hole, ground supply wire insertion hole, and ground feed wire The wall has a wall portion with an insertion hole formed therein, and a terminal pressing portion provided on a back surface thereof with a terminal contact protrusion and an engagement protrusion protruding in the cover direction, respectively, at the tip of the arm portion. A cover having a pair of power line release levers integrally formed on the wall, and a pair of ground line release levers integrally formed on the wall portion having a terminal pressing portion at the tip of the arm portion. Is the power line release lever. A housing having a guide portion that engages with the engagement projection from the side opposite to the arm portion of the power line release lever when the child pushing portion is pushed in and supports the projection; Part and a pair of elastically deformable lock pieces that are obliquely arranged facing these wire receiving parts,
The distal ends of the lock pieces close to the wire receiving portion are individually opposed to the two electric wire insertion holes for the positive electrode, and the positive electrode is placed on the intermediate portion between the base end and the distal end of the lock piece. Positioning the terminal contact protrusion of the power line release lever of the power line release lever, the positive electrode quick connection terminal built in the housing, a pair of wire receiving portions, and elastically disposed obliquely opposed to these wire receiving portions. Having a pair of deformable locking pieces, the tip ends of the locking pieces adjacent to the wire receiving portion are individually opposed to the two wire insertion holes for the negative electrode, and the base ends of the locking pieces. A terminal contact projection of the power line release lever for the negative electrode is positioned on an intermediate portion between the front end portion, and a quick connection terminal for the negative electrode built in the housing, a pair of wire receiving portions, and these wires A pair of elastically deformable lock pieces that are obliquely arranged to face the receiving portion, The front end of the lock piece adjacent to the lock portion is individually opposed to the two wire insertion holes for grounding, and the ground wire release lever is provided on an intermediate portion between the base end and the front end of the lock piece. And a grounding quick-connecting terminal built in the housing with the terminal pressing portion positioned.

In the present invention and each of the following inventions, the body and the cover forming the housing are both formed of an electrically insulating material, for example, a synthetic resin, preferably nylon or the like. Further, in the present invention and each of the following inventions, each quick connection terminal is formed of a conductive material, for example, a metal, preferably a copper alloy having a spring property such as a phosphor bronze plate, and is inserted and connected. It has a rounded free end that does not prevent the drawn out of the electric wire, and even if other lock pieces that mainly carry out the electrical connection with the wire core between the wire end and the wire receiving portion are added. Also, the portion having the wire receiving portion and the portion having the lock piece may be integrated,
They may be formed separately, and in the case of separate molding, it is preferable to connect them by riveting or welding. Further, in the present invention and each of the following inventions, the pair of release levers for the power supply and the ground may be provided so as to face each other in a straight line.

According to the first aspect of the present invention, when the electric wire sandwiched between the electric wire receiving portion of the quick connection terminal and the tip of the oblique locking piece is removed, the release formed integrally with the body. The terminal pushing portion of the lever is pushed by a pushing tool such as a screwdriver, and the release lever is pushed at the base of the arm portion at the fulcrum. Along with that, the terminal contact protrusion of the terminal pushing part pushes the longitudinal middle part of the locking piece of the quick-connecting terminal facing it,
Since the locking piece is elastically deformed to move the tip end away from the wire receiving portion, the restraint of the wire between the locking piece and the wire receiving portion can be released, and the wire can be pulled out.

As described above, the middle portion in the longitudinal direction of the lock piece is pushed by the terminal pressing portion of the release lever integrally formed with the body, so that the electric wire is released more than when the distal end of the lock piece is pushed to release the electric wire. The release stroke of the release lever required to perform the operation can be reduced.

When the power line release lever is pushed in to release the power line connected to the power line quick connection terminal as described above, the power line release lever is pushed in as described above, The terminal pushing part of the power line release lever straddling the locking piece of the positive and negative pole quick-connecting terminal and making contact with the terminal contacting projection, the locking piece of the positive and negative pole quick-connecting terminal with its root as a fulcrum. Try to deform to follow the inclination of.
However, with such a deformation, the engaging protrusion of the terminal pressing portion engages with the guide portion of the cover on the side opposite to the arm portion of the power supply line release lever, and the stopper of the terminal pressing portion acts by the stopper action of the guide portion. The release operation of the power supply line can be performed while preventing the deformation.

According to another aspect of the present invention, there is provided a power supply terminal block including a power supply side wire insertion hole for a positive electrode, a power supply side wire insertion hole for a positive electrode, and a power supply for a negative electrode. A wall portion is provided with a supply-side wire insertion hole, a power supply-side wire insertion hole for a negative electrode, a wire supply hole for ground supply, and a wire insertion hole for ground feed, respectively. A pair of power line release levers having a terminal pushing portion having a surface formed on the back surface at the tip of the arm portion are integrally formed, and a terminal pushing portion having a terminal contact / separation surface formed on the back surface is formed at the tip of the arm portion. A body formed integrally with a pair of ground wire release levers and a cover connected to the body, a pair of wire receiving portions bent from the substrate portion, and opposed to these wire receiving portions. Elastically deformable at an angle Having a pair of locking pieces, the tip end of the locking piece adjacent to the wire receiving portion is individually opposed to the two wire insertion holes for the positive electrode, and the base end and the tip of the locking piece. Positioning the terminal pressing portion of the power supply line release lever for the positive electrode on the intermediate portion between the positive electrode quick connection terminal built in the housing, and a pair of wire receiving portion bent from the substrate portion and It has a pair of elastically deformable locking pieces that are obliquely arranged facing these wire receiving portions, and the leading ends of the locking pieces close to the wire receiving portions are inserted into the two wire insertion holes for a negative electrode. While individually facing each other, the terminal pressing portion of the power line release lever for the negative electrode is positioned on the intermediate portion between the base end and the distal end of the lock piece, and the A quick connection terminal, a pair of wire receiving portions bent from the substrate portion, and a pair of these wire receiving portions. Having a pair of elastically deformable lock pieces that are disposed obliquely and individually opposing the distal ends of the lock pieces close to the wire receiving portion to the two wire insertion holes for grounding, Positioning the terminal pushing portion of the ground wire release lever on an intermediate portion between the base end and the tip portion of the lock piece, and a grounding quick connection terminal built in the housing, A terminal contact of the terminal pressing portion opposing the wall portion side of the substrate portion of at least one of the positive electrode and negative electrode quick connection terminals and the wall portion of the substrate portion of the ground quick connection terminal. It is characterized in that a lever support portion is provided, the separation surface of which is brought into and out of contact with.

According to the second aspect of the present invention, when the electric wire sandwiched between the electric wire receiving portion of the quick-connecting terminal and the tip of the slanted locking piece is removed, the release formed integrally with the body. The terminal pushing portion of the lever is pushed by a pushing tool such as a screwdriver, and the release lever is pushed at the base of the arm portion at the fulcrum. Along with this, the terminal pressing part pushes the longitudinal middle part of the locking piece of the quick-connecting terminal facing it, elastically deforms the locking piece and moves the tip end away from the wire receiving part. The constraint of the electric wire between the receiving portion and the receiving portion can be released, and the electric wire can be pulled out.

As described above, the intermediate portion in the longitudinal direction of the lock piece is pushed by the terminal pressing portion of the release lever formed integrally with the body, so that the electric wire is released more than when the distal end of the lock piece is pushed to release the electric wire. The release stroke of the release lever required to perform the operation can be reduced.

When the power supply line release lever is pushed in to release the power supply line connected to the power supply line quick connection terminal as described above, the power supply line release is released to an extent sufficient to remove the power supply line. Immediately after the lever is pushed in, the terminal contacting / separating surface of the terminal pushing portion of the power line release lever hits the lever supporting portion of the substrate portion of the power line quick-connecting terminal, and further pushing is performed by the power line speeding terminal. Obstructed by connection terminals. Similarly,
When pushing the ground wire release lever and pulling out the ground wire connected to the ground wire quick connection terminal as described above,
When the ground wire release lever is pushed in enough to remove the ground wire, immediately after that, the contact surface of the terminal pushing part of the ground wire release lever comes into contact with the lever support part of the board of the quick connection terminal for ground. In this case, further pushing is prevented by the quick connection terminal for grounding. Therefore, the pushing stroke of each release lever is defined as the height between the contact portion of the terminal pressing portion of the lever with the lock piece and the terminal contact / separation surface, and the pushing operation force of these release levers is reduced. Variation can be reduced.

According to a third aspect of the present invention, in the power supply terminal block, a lock piece stopper facing the back surface of the lock piece of the ground wire quick-connecting terminal is protruded from the back surface of the cover.

According to the present invention, when the ground wire release lever is pushed in to elastically deform the locking piece of the ground wire quick-connecting terminal in the direction toward the back side of the ground wire, the ground wire is released only when necessary. Immediately after the lock piece is elastically deformed, the lock piece comes into contact with the lock piece stopper, so that further excessive pushing of the ground wire release lever can be prevented.

According to a fourth aspect of the present invention, there is provided a lighting apparatus, comprising: a chassis having a power supply line lead-in hole; a power supply terminal block according to any one of the first to third aspects fixed to the chassis; A lamp socket electrically connected to the terminal block and attached to the chassis; and a lamp attached to the lamp socket.

According to the fourth aspect of the present invention, there is provided a power supply terminal block capable of reducing the variation in the pushing operation force of the release lever formed integrally with the body, or a power supply terminal block capable of preventing excessive pushing of the ground wire release lever. , A high-quality lighting fixture can be provided.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, reference numeral 11 denotes a fluorescent lamp lighting fixture which is installed, for example, buried in the ceiling, and has a chassis 12 whose lower surface is open. A pair of lamp sockets 13 is provided at each end of the chassis 12 in the longitudinal direction.
Is mounted, and a straight tube-shaped fluorescent lamp 14 is mounted over the lamp socket 13 facing the longitudinal direction of the chassis.

On the back of the ceiling wall 11a of the chassis 11,
A power supply terminal block 15 is mounted between the two fluorescent lamps 14, and a lighting device (not shown), for example, an electronic ballast is mounted. Power terminal block 15
Is connected to a power line (not shown) that is drawn into the chassis 11 from behind the ceiling through a power line lead hole 16 formed in the ceiling wall 11a. Further, the power supply terminal block 15 is connected to the lighting device via a load wire (not shown) (wiring within the fixture), and is connected to the lamp socket 13 on one end in the longitudinal direction of the chassis 11 via a load wire (not shown). . or,
The lighting device is connected to a lamp socket 13 at the other end in the longitudinal direction of the chassis 11 via another load line (not shown). A central reflector 17 having a V-shaped cross section that covers the power supply terminal block 15, the lighting device, and each load line is attached to the ceiling wall 11a between the two fluorescent lamps 14.

Next, the power supply terminal block 15 will be described with reference to FIGS. This power terminal block 15 is shown in FIGS.
A housing 21 made of nylon resin shown in FIG.
As shown in FIG. 14 and the like, a pair of quick-connecting terminals 22 and 23 for the positive electrode and the negative electrode of the power supply line formed by bending a single piece of phosphor bronze plate having spring properties as shown in FIG. And a ground quick-connecting terminal 24 formed by bending a single phosphor bronze plate having spring properties. The quick connection terminals 22 and 23 have the same structure.

The housing 22 includes a body 25 shown in FIG.
And a cover 26 connected to the body 25 as shown in FIGS. These are assembled by hooking a plurality of claws 27 integrally projecting from the outer surface of the side wall of the body 25 into claw receiving holes 28 provided corresponding to the side walls of the cover 26 as shown in FIGS. Have been.
As shown in FIGS. 9 to 11 and the like, the cover 26 has one screw through hole 29 and a pair of positioning projections 30. The cover 26 is provided so that the positioning protrusion 30 is formed on the ceiling wall 11.
A metal screw (not shown) is inserted and positioned in a pair of holes (not shown) formed in the hole (a), and is screwed through a terminal block mounting hole (not shown) formed in the ceiling wall 11a and a screw through hole 29 opposed thereto. Thereby, it is fixed to the back surface of the ceiling wall 11a with the one screw. As will be described later, the screw is screwed to the quick connection terminal 24, and the chassis 11 can be grounded via this screw.

The body 25 has a container shape in which the surface to which the cover 26 is attached is open, and the inside thereof is formed with a first terminal accommodating chamber 32 by a partition rib 31 integrally formed as shown in FIG. The first terminal receiving chamber 32 is separated from the second terminal receiving chamber 33 by one end.
4 are provided integrally.

A wall portion of the body 25 opposite to the cover 26;
That is, the wall portion 35 facing downward in a state where the power terminal block 15 is fixed to the chassis 12 is divided into the power line insertion surface portion 35a and the ground line insertion surface portion 35b by the step 36. The ground wire insertion surface 35b is lower on the chassis 12 side than the power line insertion surface 35a when viewed from below,
Thereby, both insertion surfaces 35a and 35b can be identified by groping.

The power supply line insertion surface portion 35a has a power supply side electric wire insertion hole for a positive electrode (hereinafter, referred to as a first power line insertion hole).
41 and the power supply side wire insertion hole for the positive electrode
It is called a first feed power line insertion hole. ) 42 are respectively opened, and a power supply side electric wire insertion hole (hereinafter, referred to as a second power supply line insertion hole) 43 for the negative electrode is arranged alongside the first power supply line insertion hole 41 and a first feed power supply. A power supply-side electric wire insertion hole for a negative electrode (hereinafter, referred to as a second power supply line insertion hole) 44 is formed in the line insertion hole in line with 42.

Further, the first and second power supply line insertion holes 41 and 43 adjacent to each other are formed in the power supply line insertion surface portion 35a.
First and second feed power supply line insertion holes 4 adjacent to each other
2 and 44, a pair of power supply line release levers (hereinafter abbreviated as release levers) 45 and 46 are formed integrally with each other. These levers 45 and 46 have the same configuration, are both formed having an arm portion 47 and a terminal pressing portion 48, and are provided in a point-symmetric arrangement in opposite directions. The root of one end of the arm portion 47 is integrally connected to the power line insertion surface portion 35a, and the other end of the arm portion 47 is integrally connected to the central portion of the terminal pushing portion 48 in the longitudinal direction. , 46 are substantially T-shaped in plan view.

The release levers 45 and 46 can be elastically deformed with the base of the arm 47 as a fulcrum, and a gap g for allowing this deformation is provided as shown in FIGS. 3 and 8. , 46 are provided on the power supply line insertion surface 35a along the periphery other than the base. The arm portions 47 of the release levers 45 and 46 provided symmetrically as described above are
As shown in FIGS. 3 and 8, the terminal pushing portions 48 of the release levers 45 and 46 are also provided in parallel with each other and obliquely. The terminal pushing portion 48 is a quick connection terminal 22, 2 for positive and negative electrodes, which will be described in detail later.
3 (see FIG. 4). At a portion where the terminal pressing portion 48 and the arm portion 47 supporting the terminal pressing portion 48 are integrally connected, a pressing tool receiving portion 49 formed of a concave portion is provided.

As shown in FIG.
The terminal pressing portion 48 of FIG. 6 integrally has terminal contact protrusions 48a protruding in the direction of the cover 26 on the back surfaces of both ends in the longitudinal direction, respectively.
An engaging projection 48b projecting in the direction is integrally provided. The engagement projection 48b is located between quick-connecting terminals 22 and 23, which will be described later, which are arranged side by side and adjacent to each other, and has a longer projection length than the pair of terminal contact projections 48a. Therefore, the terminal pressing portion 48 is substantially T-shaped (see FIG. 4). The engagement projection 48b is formed so as to be tapered toward its distal end. The concave back surface between the one terminal contact protrusion 48a and the engagement protrusion 48b is used as a terminal contact / separation surface 48c.

As shown in FIGS. 2 and 3, etc., the ground wire insertion surface portion 35b is provided with a wire insertion hole 51 for supplying the ground and a wire insertion hole 52 for feeding the ground. A pair of ground wire release levers 53 and 54 (hereinafter simply referred to as release levers) are formed integrally between the holes 51 and 52.

The release levers 53 and 54 have the same configuration, are both formed with an arm portion 55 and a terminal pressing portion 56, and are provided in line-symmetrical arrangement in opposite directions. The root of one end of the arm 55 is integrally connected to the ground wire insertion surface 35b, and the other end of the arm 55 is integrally connected to a portion where the terminal pressing portion 56 and the projection 57 are connected. The release levers 53 and 54 can be elastically deformed with the base of the arm 55 as a fulcrum, and a gap g for allowing this deformation is provided as shown in FIGS. 3 and 8. The ground wire insertion surface portion 35b is provided along the periphery other than the base.

At a portion where the terminal pressing portion 56 and the arm portion 55 supporting the terminal pressing portion are integrally connected, a pressing tool receiving portion 58 formed of a concave portion is provided. Double release lever 5
Each of the terminals 3 and 54 integrally has a terminal contact protrusion 56a projecting toward the cover 26 on the back surface of the terminal pressing portion 56. The back surface of the terminal pressing portion 56 corresponding to the periphery of the base of the projection 56a is used as a terminal contact / separation surface 56c.

Further, the side wall 61 of the portion where the width of the body 25 is reduced is used as a load line insertion surface portion. 2, a pair of load line insertion holes 62 for the positive electrode and a pair of load line insertion holes 63 for the negative electrode are formed in the wall portion 61. These insertion holes 6
The load line 3 is inserted into the load line 3 from the horizontal direction. In FIG. 2, reference numeral 64 denotes a release line for release of the load line, which is provided in the vicinity of the load line insertion holes 62 and 63.

As shown in FIGS.
On the back surface (inner surface), a pair of guide protrusions 71 as a guide portion, a pair of terminal pressing ribs 73 as a terminal pressing portion, a terminal supporting rib 74 as a lock piece stopper, a terminal supporting rib 77 and the like are provided. , Are provided integrally toward the wall 35 side. The pair of guide projections 71 and the pair of terminal pressing ribs 73 are connected to the pair of stopper projections 72 via cross-shaped ribs. The terminal support ribs 74 are provided on the side opposite to the guide projections 71 and the terminal holding ribs 73 with the screw holes 29 therebetween.

As shown in FIG. 6, a pair of guide projections 71
Is formed at a position facing the engagement projection 48b of the release levers 45 and 46, and has a diagonal engagement surface 71a at the tip. When the release levers 45 and 46 are pushed in, the guide surface 71a is provided with an engagement protrusion 48b that moves in the pushing direction, and the release levers 45 and 46
Is provided for engaging and supporting from the side opposite to the arm portion 47 of the terminal contact projection 48a and the engagement projection 48b, and furthermore, the terminal pressing portion 48 having the same. 23 is prevented from falling down along the inclination of a lock piece described later.

As shown in FIG. 5, a pair of terminal holding ribs 7 are provided.
Numeral 3 is formed at a position facing the quick-connecting terminals 22 and 23, and is provided to support these quick-connecting terminals 22 and 23 from the cover 26 side. As shown in FIG. 7, the terminal support rib 74 is formed at a position facing the quick connection terminal 24, and a locking piece 94 of the terminal 24 described later is formed.
b, 94c are used to prevent excessive elastic deformation. Corners on both sides in the width direction of the distal end of the rib 74 are formed with slopes, respectively, and lock pieces 94b, 94c to be described later.
The area of contact with the lock tablet 9
When the supporting members 4b and 94c are supported, the possibility that the lock pieces 94b and 94c are bent around the corners is reduced. Further, the terminal pressing rib 77 is formed at a position facing the quick connection terminal 24, and the terminal 24 is covered with the cover 2.
It is provided for supporting from the 6 side.

As shown in FIGS. 12 and 14, the quick connection terminals 22 and 23 for the power supply line are composed of a board portion 81, first and second electric wire receiving portions 82 and 83, and a first lock plate 84. , A second locking plate 85, a third wire receiving portion 86, and a pair of load wire locking pieces 87. The first and second electric wire receiving portions 8 of the end surface of the substrate portion 81 on the first locking plate 84 side.
The horizontal end face portion located on the side 2, 83 is used as a lever support portion 81a.

First and second electric wire receiving portions 82 and 83
Is formed by bending both sides in the longitudinal direction of the board portion 81 to one surface side of the board portion 81 at substantially right angles, and the third wire receiving portion 86 is connected to the board portion 81 from the tip of the second wire receiving portion 83.
Is bent to the opposite side. The first lock plate 84 is bent from one side of the other two sides of the substrate portion 81 different from the two sides to the one surface side, and the second lock plate 85 is the other side of the other two sides. To the one side.

The first lock plate 84 has a base portion 84a connected to the substrate portion 81, and is obliquely folded in opposite directions from both sides of the base portion 84a.
2 or the lock piece 8 which is close to and opposed to the second electric wire receiving portion 83
4b and 84c. Similarly, the second lock plate 85 also has a base portion 85a connected to the substrate portion 81, and is obliquely folded in opposite directions from both sides of the base portion 85a, and the tip of the inclination is the first wire receiving portion 82 or the second wire lock portion. The lock pieces 85b and 85c are formed in close proximity to and facing the wire receiving portion 83. Lock pieces 84b, 84c and lock pieces 85
Each of b and 85c is elastically deformable with the base 84a or 85a as a fulcrum. The locking pieces 84b and 84c mainly mechanically prevent a power line (not shown) from coming off, and sandwich the power line between the first and second electric wire receiving portions 82 and 83. The locking pieces 85b and 85c are The power supply line is sandwiched between the first and second electric wire receiving portions 82 and 83 for electrical connection with the power supply line.

The third electric wire receiving portion 86 has a second
It has a third locking plate 86a substantially parallel to the electric wire receiving portion 83 and bent toward the other surface side of the substrate portion 81. The third lock plate 86a has the pair of lock pieces 87 attached thereto.
Is cut and raised diagonally.

The pair of quick connection terminals 22 and 23 having the above configuration
The first terminals are accommodated in the first terminal chamber 32 in parallel with each other at positions determined by various ribs provided therein. In this housed state, the two-speed connection terminals 22, 2
3 are pressed in the direction of the wall 35 of the body 25 by the terminal pressing ribs 73 of the cover 26 individually corresponding thereto.

Further, in the accommodated state, as shown in FIG. 5, the front end of the locking piece 84b of the quick connection terminal 22 on the positive electrode side faces the first power line insertion hole 41 and the locking piece 8
4 c is opposed to the first feed power line insertion hole 42.
In addition, the tip portions of the pair of lock pieces 87 face the pair of load line insertion holes 62 for the load line, and also face the release holes 64 near the pair. Similarly, although not shown, the distal end of the locking piece 85b of the quick connection terminal 23 on the negative electrode side faces the second power supply line insertion hole 43, and the distal end of the locking piece 85c is connected to the second feed power supply line insertion hole 44. Oppose. In addition, the tip portions of the pair of lock pieces 87 face the pair of load line insertion holes 63 for the load line, and also face the release holes 64 in the vicinity thereof.

Also, the locking piece 84 of the double-speed connection terminals 22 and 23
b, at the intermediate portion between the tip of 85b and the base 84a,
As shown in FIG. 5, the terminal contact projections 48a of the terminal pushing portions 48 of the one release lever 45 for the power supply line are respectively in contact with each other, and similarly, the tip ends of the lock pieces 84c, 85c of the two-speed connection terminals 22, 23 are connected. Although not shown, the terminal contact protrusions 48a of the terminal pushing portions 48 of the other release lever 46 for the power supply line abut on intermediate portions between the base portions 84a. Also, both release levers 45,
The engagement protrusion 48 b of the cover 46 faces the distal end of the guide projection 71 of the cover 26 at a predetermined distance. Further, as shown in FIG. 4, the lever support portion 81a of one of the quick connection terminals 22 places a predetermined distance S1 on the terminal contact / separation surface 48c of the terminal pressing portion 48 straddling the different polarity quick connection terminals 22 and 23. Face each other.

As shown in FIG. 13, the quick connection terminal 24 for the ground wire includes a board portion 91, first and second wire receiving portions 92 and 93, one lock plate 94, and a screw receiving tongue. Piece 9
5 is provided. Of the end surfaces of the board portion 91 on the lock plate 84 side, the horizontal end surface portions located on the first and second electric wire receiving portions 82 and 83 are used as stopper end surfaces 91a.

First and second electric wire receiving portions 92 and 93
Are formed at substantially right angles from both sides in the longitudinal direction of the substrate portion 91 to one surface side of the substrate portion 91. The lock plate 94 is bent from one side of the other two sides of the substrate portion 91 different from the two sides to the one surface side, and the screw receiving tongue 95 is the other of the other two sides of the substrate portion 91. Is bent from the side to the side opposite to the one surface side. The screw receiving tongue piece 95 has a screw hole 95a into which the screw (not shown) is screwed.

The lock plate 94 is formed by bending a base 94a connected to the substrate 91 and obliquely in opposite directions from both sides of the base 94a. Lock piece 94 facing close to part 93
b, 94c. Lock tabs 94b, 94
Reference numeral c designates a mechanically retaining and electrically connecting ground wire (not shown) to hold the ground wire between the first and second wire receiving portions 92 and 93.

The quick-connecting terminal 24 having the above-described structure is provided in the second terminal accommodating chamber 33 with various ribs provided inside the second terminal accommodating chamber 33 with the screw receiving tongue piece 95 positioned on the opening side of the body 25. It is located and housed. In this accommodated state, the quick connection terminal 24 is pressed toward the wall 35 of the body 25 by a terminal holding rib 77 integrally formed on the back surface of the cover 26 correspondingly.

Further, in the accommodated state, as shown in FIG. 7, the tip of the locking piece 94b faces the wire insertion hole 51, and the tip of the locking piece 94c fits in the wire insertion hole 52.
The terminal support ribs 74 face the back surfaces of the pair of lock pieces 94b and 94c at a predetermined interval. The terminal contact protrusions 56a of the terminal pushing portions 56 of the ground release levers 53, 54 abut on the intermediate portions between the tips of the lock pieces 94b, 94c and the base 94a, respectively.
Further, the protrusions 57 of the release levers 53 and 54 are provided with the cover 26.
The stopper projections 72 face each other at a predetermined interval. Further, the lever supporting portion 91a of the quick connection terminal 24 is provided on the terminal contact / separation surface 56c of the terminal pressing portion 56 of the release levers 53 and 54.
Oppose each other at a predetermined distance S2 (in FIG. 4, only the relationship with one release lever 53 is shown and represented).

In each of the first and second power supply line insertion holes 41 and 42 of the power supply terminal block 15 having the above-described configuration, a positive or negative core wire of a power supply line such as an F cable drawn from behind the ceiling is inserted. These core wires are individually connected to the corresponding quick connection terminals 22 and 23. When a power supply line for feeding is required, the positive or negative core wire of the power supply line is connected to the first and second cores.
, And these core wires are individually connected to the corresponding quick-connecting terminals 22 and 23.

In these cases, one core wire is connected to the quick connection terminal 2.
The second lock plate 85b of the second lock plate 85 is passed between the first lock plate 84 and the first wire receiving portion 82 while elastically deforming the lock piece 84b of the second lock plate 84 toward the back side. While being elastically deformed in the direction of the back side thereof,
Between the lock pieces 84b, 85b and the first
It is sandwiched between the electric wire receiving portion 82. Similarly, the other core wire further passes through between the second wire receiving portion 83 while elastically deforming the locking piece 84c of the first locking plate 84 of the quick-connecting terminal 23 toward the back side thereof, and then further. While elastically deforming the lock pieces 85c of the second lock plate 85 toward the back side thereof, the lock pieces 85c pass between the second wire receiving portion 82 and the
c, 85c and the first electric wire receiving portion 82.

In addition, the core wire of the supply ground wire is inserted into the wire insertion hole 51 of the power supply terminal block 15, and if a ground feed is required, the feed ground wire is inserted into another wire insertion hole 52. And these are connected to the quick connection terminal 24. In this case, the core wire of the supply ground wire passes between this and the first electric wire receiving portion 92 while elastically deforming the locking piece 94a of the quick connection terminal 24 toward the back side thereof,
Similarly, the core wire of the feeding ground wire passes between the second wire receiving portion 93 while elastically deforming the locking piece 94b of the quick connection terminal 24 toward the back side thereof. And are sandwiched between them.

In releasing the ground wire, immediately after the lock pieces 94b and 94c are elastically deformed as necessary for the release, the lock pieces project from the rear face of the cover 25 in opposition to the rear faces of the lock pieces 94b and 94c. Lock stopper 74 provided
Since the lock pieces 94b and 94c come into contact with each other,
It is possible to prevent the ground wire release levers 53 and 54 from being pushed in. Therefore, the ground wire can be released while preventing the ground wire release levers 53 and 54 from being excessively pushed in, and the locking pieces 94b and 94c of the ground wire quick connection terminal 24 can be prevented.
Can be prevented.

By the way, in order to remove the electric wire which is quickly connected to the power supply terminal block 15 as described above, if the object is a power supply line for supply, the release lever 45 should be turned by a tool such as a screwdriver. The power supply line may be pulled out while pushing in. If the power supply line is a feed power supply line, the power supply line may be pulled out while pushing in the release lever 46 with a tool such as a screwdriver. If the wire to be removed is a supply ground wire, pull out the ground wire while pushing the release lever 53 with a tool such as a screwdriver. Similarly, if the feed wire is a feed ground wire, It is sufficient to pull out the ground wire while pushing the release lever 54 with a tool such as a screwdriver. In order to release the connection of the electric wire connected to the power terminal block 15 as described above, the power supply line on the supply side must be screwed. The power supply line on the supply side may be pulled while pushing the sharpened tip of the release tool against the terminal pressing portion 48 of the release lever 45 and pushing the same. The power supply line on the feed side may be pulled while the part is pressed against the terminal pressing part 48 of the release lever 46. Further, with respect to the supply side ground wire, the supply side ground wire may be pulled while pushing the tip of the tool against the terminal pressing portion 56 of the release lever 53 and pushing the same. It is sufficient to pull the ground wire on the feed side while pushing the tip of the tool against the terminal pushing portion 56 of the release lever 54 and pushing it.

By the pushing operation, the release lever 4 for power supply is released.
5 is pushed in while being elastically deformed around the base of the arm part 47 while being elastically deformed, a pair of terminal contact projections 48 a projecting from the back surface of the terminal pressing part 48 are formed obliquely to the quick connection terminals 22 and 23 for the power supply line. While individually pressing the lock pieces 84b and elastically deforming them toward the cover 26, the lock pieces 84b and
Since the space between the electric wire receiving portion 82 is opened, the supply-side power supply line can be pulled out. Similarly, by the pushing operation, the other release lever 46 for the power supply is pushed in while being elastically deformed around the base of the arm 47 as a fulcrum. But,
While individually pressing the oblique locking pieces 84c of the power supply quick-connecting terminals 22 and 23 to elastically deform them toward the second locking plate 85,
Since the space between the lock piece 84c and the second electric wire receiving portion 83 is opened, the power supply side power supply line can be pulled out.

Also, by the pushing operation, the ground release lever 53 is pushed in while being elastically deformed around the base of the arm portion 55 as a fulcrum, so that a single terminal contact projection projecting from the back surface of the terminal pushing portion 56. 56a pushes the oblique lock piece 94b of the quick-connecting terminal 24 for the ground wire and presses the cover 26
Since the space between the lock piece 94b and the first wire receiving portion 92 is opened while being elastically deformed to the side, the supply-side ground wire can be pulled out. Similarly, by the pushing operation, the ground release lever 54 is pushed while being elastically deformed around the base of the arm portion 55 as a fulcrum.
A single terminal abutting projection 56a projecting from the back surface of the second wire pushes the slanted locking piece 85c of the quick connection terminal 24 for the ground wire to elastically deform the cover 26 side. Since the space between the receiving portion 93 and the receiving portion 93 is opened, the sending-side ground wire can be pulled out.

In releasing the electric wires connected as described above, the middle portions of the lock pieces 84b, 84c, 85b, 85c in the longitudinal direction are released by the release levers 45 or 46 or the terminal pressing portions 48 or 56 of 53 or 54. In other words, when the lock pieces 84b, 84c, 85b, and 85c are pushed on the base 84a or 85a or 94a side rather than the tip ends, the wire is released by pushing the tip of the lock pieces as in the related art. Rather, the release stroke of the release levers 45, 46, 53, 54 required to release the electric wire can be reduced. Therefore, the release levers 45, 46, 5
3, 54 does not bend excessively, and its deformation and breakage can be prevented.

By the way, the quick connection terminals 22 and 23 of the positive and negative poles
The terminal pushing portions 48 of the release levers 45, 46, which abut the terminal contact protrusions 48a on the adjacent lock pieces 84b, 85b or 84c, 85c, when the power supply line is released, are quickly connected. The terminal contact protrusion 48a and the terminal pressing portion 48 having the same are to be deformed so as to follow the lock pieces 84b, 85b or 84c, 85c of the lock pieces 22, 23. However, an engagement projection 48b is provided on the back surface of the terminal pressing portion 48 and located between the quick-connecting terminals 22 and 23 and protrudes toward the cover 26.
Since the guide projection 71 is provided on the back surface of the cover 26 so as to face the cover 26, the deformation can be prevented.

That is, as described above, when the terminal pushing portion 48 is pushed in and the terminal pushing portion 48 advances to a certain extent, the engaging projection 48 b comes into contact with the inclined guide surface 71 a of the guide convex portion 71. The guide surface 71a is engaged with the engagement protrusion 48b from the side opposite to the arm portion 47, and supports the protrusion 48b while guiding the protrusion 48b in a direction opposite to the direction in which the deformation is to be performed.

By the stopper function of the guide convex portion 71, the terminal pressing portion 48 can be prevented from being deformed around the tip of the arm portion 47 as a fulcrum. Therefore, loss of the pushing operation force of the release levers 45 and 46 due to deformation is eliminated, and variation in the pushing operation force of the release levers 45 and 46 can be reduced. As a result, the pushing operation force is accurately applied to the lock pieces 84b, 85b or 84c, 85c, and the power line can be reliably released without pushing the release levers 45, 46 more than necessary. Further, since the release levers 45 and 46 do not need to be pushed more than necessary, breakage due to excessive deformation of the terminal pushing portion 48 can be prevented.

When the release levers 45 and 46 are pushed in as described above to remove the power supply line connected to the power supply line quick connection terminals 22 and 23 as described above, the power supply line may be removed. When the release levers 45 and 46 are pushed in to a sufficient extent, immediately after that, the separation dimension S1 disappears, and the terminal contact / separation surface 48c of the terminal pressing portion 48 of the release levers 45 and 46 is connected to one of the quick connection terminals 22. Lever support part 81a of substrate part 81
In this case, further pushing is prevented by the quick connection terminal 22.

That is, the pushing stroke of the release levers 45 and 46 is determined by the separation dimension S1, and the release levers 45 and 46 are not excessively pushed.
Therefore, it is possible to reduce the variation in the pushing operation force of the release levers 45 and 46 when the power supply line is released. with this,
The pushing operation force is accurately applied to the lock pieces 84b, 85b or 84c, 85c, and the release lever 4 is unnecessarily released.
Since the power supply line can be reliably released without pushing in the terminals 5 and 46 and the release levers 45 and 46 are not pushed in more than necessary, breakage of the terminal pushing portion 48 due to excessive deformation can be prevented.

Similarly, as described above, the release levers 53, 5
When the release levers 53 and 54 are pushed in to a sufficient degree to pull out the ground wire when the ground wire connected to the ground wire quick-connecting terminal 24 is to be pulled out as described above by pushing the push-in terminal 4, the release lever 53 is pressed. Immediately after that, the separation dimension S2 disappears, and the terminal contact / separation surface 56 of the terminal pressing portion 56 of the release levers 53, 54.
c touches the lever support portion 91 a of the substrate portion 91 of the quick connection terminal 24, and further pressing is prevented by the quick connection terminal 24.

That is, the pushing stroke of the release levers 53 and 54 is defined by the separation dimension S2, and the release levers 53 and 54 are not pushed too much.
Therefore, it is possible to reduce the variation in the pushing operation force of the release levers 53 and 54 when releasing the ground wire. Accordingly, the pushing operation force is accurately applied to the lock pieces 94b, 94c.
In addition, the ground wire can be reliably released without pushing the release levers 53 and 54 more than necessary, and the release levers 53 and 54 are not pushed more than necessary, so that the damage due to the excessive deformation can be prevented. Can be prevented.

[0069]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, the terminal pressing portion of the release lever formed integrally with the body for releasing the connected power supply line has a positive and negative bipolar quick connection terminal when the power supply line is released. Deformation of the lock piece along the inclination of the lock piece is prevented by the engagement between the engagement projection of the terminal pressing portion and the guide portion of the cover, so that the operation force of the power line release lever is lost due to the deformation. And the variation in the pushing operation force of the power line release lever can be reduced. Thus, it is possible to provide a power supply terminal block that can apply the pushing operation force to the lock piece accurately and release the electric wire reliably without excessively pushing the power supply release lever.

According to the second aspect of the present invention, by using the quick connection terminal built in the housing as a stopper, the pushing stroke of the release lever for the power supply line and the grounding wire can be reduced by the terminal of the lever. Since it can be specified as the height dimension between the contact part of the push part with the lock piece and the terminal contact / separation surface,
Variations in the pushing operation force of each release lever formed integrally with the body for releasing the electric wire can be reduced. Thereby, the pushing operation force is properly applied to the lock piece,
It is possible to provide a power supply terminal block capable of surely releasing an electric wire without excessively pushing each release lever.

According to the third aspect of the present invention, when the ground wire is released, the locking wire stopper provided on the cover can release the ground wire while preventing the ground wire release lever from being excessively pushed in, and can release the ground wire. It is possible to provide a power supply terminal block in which the lock piece of the wire quick-connecting terminal does not loosen.

According to the fourth aspect of the present invention, there is provided a power supply terminal block capable of reducing the variation of the pushing operation force of the release lever formed integrally with the body, or a power supply terminal block capable of preventing excessive pushing of the ground wire release lever. Since it is provided, a high-quality lighting fixture can be provided.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a fluorescent lamp lighting apparatus including a power supply terminal block according to an embodiment of the present invention, with a part cut away.
FIG. 2B is a cross-sectional view of the lighting device of FIG.

FIG. 2 is a perspective view showing a power supply terminal block according to one embodiment of the present invention.

FIG. 3 is an exemplary front view showing the power supply terminal block shown in FIG. 2;

FIG. 4 is a sectional view of the power supply terminal block shown along the line EE in FIG. 3;

FIG. 5 is a sectional view of the power supply terminal block shown along the line AA in FIG. 3;

FIG. 6 is a cross-sectional view of the power supply terminal block shown along the line BB in FIG. 3;

FIG. 7 is a cross-sectional view of the power supply terminal block shown along the line CC in FIG. 3;

FIG. 8 is a rear view of a body provided in the power supply terminal block of FIG. 2;

FIG. 9 is an exemplary perspective view showing a cover included in the power supply terminal block shown in FIG. 2;

FIG. 10 is an exemplary rear view of a cover included in the power terminal block shown in FIG. 2;

FIG. 11 is a sectional view of the cover shown along the line HH in FIG. 10;

FIG. 12 is an exemplary perspective view showing a power supply line quick connection terminal included in the power supply terminal block of FIG. 2;

FIG. 13 is a perspective view showing a quick connection terminal for a ground wire included in the power supply terminal block of FIG. 2;

FIG. 14A is a plan view of the quick connection terminal of FIG. 12; (B)
13 is a side view of the quick connection terminal of FIG. (C) is a front view of the quick connection terminal of FIG. (D) is a rear view of the quick connection terminal of FIG.
(E) is a bottom view of the quick connection terminal of FIG. 12.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Lighting fixture 12 ... Chassis 13 ... Lamp socket 14 ... Fluorescent lamp 15 ... Power supply terminal block 16 ... Power supply line lead-in hole 21 ... Housing 22 ... Quick connection terminal (for power supply line positive electrode) 23 ... Quick connection terminal (power supply line negative electrode) 24) Quick connection terminal (for grounding) 25 ... Cover 26 ... Body 35 ... Body wall 41 ... Power supply side wire insertion hole (first power line insertion hole) 42 ... Power supply side wire insertion hole (first Feed power line insertion hole) 43 Power supply side wire insertion hole (second power line insertion hole) 44 Power supply side wire insertion hole (second feed power line insertion hole) 45, 46 Power line release lever 47 Arm Portion 48: Terminal pressing portion of power line release lever 48a: Terminal contact projection 48b: Engagement projection 48c: Terminal contact / separation surface 51: Ground supply wire insertion hole 52: Ground feed wire insertion hole 53, 54: Ground wire Release lever 5 ... Arm part 56 ... Terminal pushing part of ground wire release lever 56a ... Terminal contact protrusion 56c ... Terminal contact / separation surface 71 ... Guide convex part (guide part) 71a ... Guide surface 81 ... Substrate part 81a ... Lever support part 82 ... No. 1 wire receiving portion 83 ... second wire receiving portion 84a, 85a ... base portion 84b, 85b ... lock piece 84c, 85c ... lock piece 91 ... substrate portion 91a ... lever support portion 92 ... first wire receiving portion 93 ... second Wire receiving portion 94a: base portion 94b: lock piece 94c: lock piece

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Satoshi Watanabe 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo F-term in Toshiba Lighting & Technology Corporation (reference) 5E086 CC03 CC21 DD03 DD22 HH02 JJ14 LL04 LL08 LL20

Claims (4)

[Claims] 1. A body comprising a body and a cover connected to the body, wherein the body includes a power supply side wire insertion hole for a positive electrode, a power supply side wire insertion hole for a positive electrode, and a power supply side wire for a negative electrode. The insertion hole and the power supply side wire insertion hole for the negative electrode, the wire insertion hole for ground supply and the wall portion in which the wire insertion hole for earth feed is opened, and,
A pair of power line release levers integrally formed on the wall portion having a terminal pressing portion provided on the back surface with a terminal contact projection and an engagement projection respectively protruding in the cover direction, and The arm has a pair of ground wire release levers integrally formed on the wall portion with a terminal push portion at the tip of the arm portion, and the cover is pushed by the terminal push portion of the power wire release lever. A housing having a guide portion that engages with the engagement protrusion from the side opposite to the arm portion of the power line release lever and supports the protrusion; and a pair of wire receiving portions and these wire receiving portions. It has a pair of elastically deformable lock pieces arranged diagonally opposite to each other, and the tip ends of the lock pieces close to the wire receiving portion are individually opposed to the two wire insertion holes for a positive electrode. On the intermediate portion between the proximal end and the distal end of the lock tab. With the terminal contact protrusion of the power supply line release lever for the pole positioned, a positive electrode quick connection terminal built in the housing, a pair of wire receiving portions and a diagonally arranged opposed to these wire receiving portions. A pair of elastically deformable lock pieces, wherein the tip ends of the lock pieces close to the wire receiving portion are individually opposed to the two electric wire insertion holes for a negative electrode, and the base of the lock pieces is Positioning the terminal contact protrusion of the power line release lever for the negative electrode on the intermediate portion between the end and the tip portion, the negative electrode quick connection terminal built in the housing, a pair of wire receiving portions, It has a pair of elastically deformable locking pieces that are obliquely arranged facing these wire receiving parts, and the tip ends of the locking pieces close to the wire receiving parts are inserted into the two wire insertion holes for grounding. Grounding wires on the intermediate part between the base end and the front end of the lock piece. By positioning terminal pushing portion of the removal lever, the power terminal block, characterized in that anda ground speed imaging terminal incorporated in the housing. 2. A power supply side wire insertion hole for a positive electrode, a power supply side wire insertion hole for a positive electrode, a power supply side wire insertion hole for a negative electrode, a power supply side wire insertion hole for a negative electrode, and a ground supply wire. A pair of power supplies having a wall portion in which an insertion hole and a wire insertion hole for ground feed are respectively formed, and a terminal pushing portion having a terminal contact / separation surface formed on the back surface at the end of the arm portion on the wall portion. A wire release lever is integrally formed, and a body having a pair of ground wire release levers integrally formed with a pair of ground wire release levers having a terminal pressing portion having a terminal contact / separation surface formed on the back surface at the tip of the arm portion. A housing comprising a connected cover, a pair of wire receiving portions bent from the substrate portion, and a pair of elastically deformable lock pieces arranged obliquely opposite to the wire receiving portions, Tip of the lock piece close to the wire receiving part While individually opposing the two electric wire insertion holes for the positive electrode, the terminal pressing portion of the power line release lever for the positive electrode is located on the intermediate portion between the base end and the distal end of the lock piece, A positive electrode quick-connecting terminal built in the housing, a pair of electric wire receiving portions bent from the substrate portion, and a pair of elastically deformable lock pieces that are obliquely disposed to face the electric wire receiving portions; Then, the distal ends of the lock pieces adjacent to the wire receiving portion are individually opposed to the two electric wire insertion holes for the negative electrode, and on the intermediate portion between the base end and the distal end of the lock pieces. Positioning the terminal pushing portion of the power line release lever for the negative electrode, the quick connection terminal for the negative electrode incorporated in the housing, a pair of wire receiving portions bent from the substrate portion, and facing the wire receiving portions. The electric wire having a pair of elastically deformable lock pieces arranged obliquely A front end portion of the lock piece adjacent to the locking portion is individually opposed to the two electric wire insertion holes for grounding, and a ground wire release lever is provided on an intermediate portion between a base end and a front end portion of the lock piece. And a grounding quick-connecting terminal built in the housing, wherein the wall portion side of at least one of the positive and negative electrode quick-connecting terminals is disposed. A power supply terminal block, further comprising a lever support portion provided on a side of the wall of the substrate of the grounding quick connection terminal, the terminal contacting / separating surface of the terminal pressing portion facing the terminal connecting / separating surface. 3. The power supply terminal block according to claim 1, wherein a lock piece stopper facing the back surface of the lock piece of the ground wire quick-connecting terminal protrudes from the back surface of the cover. . 4. A chassis having a power supply line lead-in hole, the power supply terminal block according to any one of claims 1 to 3, fixed to the chassis, and electrically connected to the power supply terminal block. A lighting fixture, comprising: a lamp socket attached to the chassis; and a lamp attached to the lamp socket.