JPS645832Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a power terminal block, a pull-type switch,
This relates to a wiring block that integrates a small ball socket, etc.

[Prior art]

Figures 1 and 2 show a 4-stage flashing type lighting fixture for conventional fluorescent lamps with 4 straight tubes (4 lights - 2 lights - miniature bulb - off)
An example is shown below, but in these cases, the instrument body 1
There is a power supply terminal block 4 near the power supply hole 2 provided near the center of the power supply hole 2, which connects the indoor electrical wiring 3 introduced into the appliance body 1 through the power supply hole 2, and a power supply terminal block 4 located a little away from there. Pull-type switch 5 for switching
A total of three wiring parts, ie, a small bulb socket 6 and a small bulb socket 6, were arranged in a scattered manner, and these wiring parts were connected by three internal wirings 7 between their respective terminals by soldering.

In the case of such a device, it is necessary to manufacture the power terminal block 4, switch 5, miniature bulb socket 6, and internal wiring 7, respectively, or to connect the respective terminals with the internal wiring 7. It has disadvantages in that it requires many parts and time, such as the time and effort needed to attach it to the device body 1, and the time and effort required to arrange the wiring 7 inside the device to look good.

[Summary of the idea]

This idea was created in view of these drawbacks,
A conductive metal fitting integrally formed on a pair of power supply terminals connected to the indoor electrical wiring, and a switch and a miniature bulb socket are separately connected, and the switch and a miniature bulb socket are connected with other conductive metal fittings different from those conductive metal fittings. These electrically conductive metal fittings that are to be connected are installed in one main body, and the depth of the switch drive unit that connects and disconnects the switch, the cylindrical unit that houses and holds this switch drive unit, and the miniature socket are made constant. The opening of the main body is closed off by the back cover, which has protrusions for each, reducing the number of components and simplifying assembly. This reduces the number of wires inside the instrument, simplifying assembly and improving the appearance. It is an object of the present invention to provide a wiring block which can improve the reliability of switches and miniature sockets by improving the heat dissipation effect.

[Example of idea]

An embodiment of this invention is shown and explained in FIGS. 3 to 6.

In the figure, 8 is the assembled wiring block;
Reference numeral 9 denotes a main body (hereinafter simply referred to as the main body) of the wiring block 8, which is formed of an insulating material and has a substantially box shape with one side open. Reference numeral 10 denotes a pair of indoor electrical wiring insertion holes, which are bored at one end side of the upper surface of the main body 9.
Reference numeral 11 denotes tool insertion holes, each of which is bored in the vicinity of the indoor electrical wiring insertion hole 10. A terminal chamber 12 is provided on the back side of the indoor electrical wiring insertion hole 10 and the tool insertion hole 11, and is approximately rectangular in shape, with a cut 13 provided at one corner. Reference numeral 14 denotes a switch operation hole, which is bored in the upper surface of the main body 9 at the approximate center, and is connected to the switch chamber 1 on the back side.
Connects to 5. Reference numeral 16 denotes a cylindrical portion having a stepped portion 17, which projects from the center of the switch chamber 15, and the center of the cylindrical portion is the switch operation hole 14.

Reference numeral 18 denotes a plurality of partition walls provided radially at the base of the cylindrical portion 16, which are of low height and are used to position and isolate the conductive metal fitting 36, the first fixing piece 43, and the second fixing piece 45, which will be described later. be. Reference numeral 19 denotes a miniature ball mounting hole, which is bored into a cylindrical shape from the upper surface approximately midway between the tool insertion hole 11 and the switch operation hole 14 of the main body 9, and has a screw 20 protruding from its inner surface for screwing the base of the miniature ball. At the same time, a groove 21 through which the side piece 42 is passed is provided. 2
2 are three load wiring insertion holes on the top surface of the main body 9,
The other end facing the indoor electrical wiring insertion hole 10 is bored. Reference numeral 23 indicates a plurality of protrusions for positioning and fixing metal fittings provided at key points on the inner surface of the main body 9, and reference numeral 24 indicates a plurality of mounting screw holes. Reference numeral 25 denotes a pair of mounting flanges on the left and right sides of the main body 9. Reference numeral 26 denotes a pair of U-shaped notches provided oppositely on both shorter sides of the main body 9.

A back cover 27 is made of an insulating material and closes one side of the main body 9 that is open. Reference numeral 28 denotes a hollow cylinder with a bottom provided on the back cover 27, and its center axis is the same as that of the switch operation hole 14. Reference numeral 29 denotes a pair of sliding grooves that are provided in communication with and facing each other on the inner surface of the cylindrical portion 28 . Reference numeral 30 denotes a center piece receiving projection provided on the inner and outer surfaces of the back cover 27, which has the same central axis as the miniature ball mounting hole 19. 31 is a retaining protrusion provided on the outer surface of the back cover 27; 32 is a plurality of metal fitting holding protrusions provided on the inner surface of the back cover 27; 33 is a pair of metal retaining protrusions provided on both short sides of the back cover 27; It is a U-shaped notch. 34 is a plurality of mounting holes provided in the back cover 27, and 35 is a pair of left and right mounting flanges of the back cover 27.

Reference numerals 36 and 37 denote a pair of conductive metal fittings, which are formed by punching and bending from a conductive plate material, and each has a power terminal 3 at one end.
8, and a terminal portion 39 for soldering is provided near this. 40 is a ring-shaped switch input terminal formed at the other end of the conductive metal fitting 36; 41 is the conductive metal fitting 3;
This is a load common terminal formed at the other end of 7. 42
is a side piece for a miniature ball that is provided by partially extending the side surface of the conductive metal fitting 37. 43 is the first switch
The fixed piece is formed by punching and bending a conductive plate material, and one end is inserted into a predetermined partition wall 18 and the other end is extended to form a first load terminal 44. Reference numeral 45 denotes a second fixing piece of the switch, which is formed by punching and bending a conductive plate material, and has one end inserted into a predetermined partition wall 18 and the other end extended to form a second load terminal 46. 47 is a tongue piece that self-locks the load wiring (not shown), and is connected to the load common terminal 4.
1, are provided near the first load terminal 44 and the second load terminal 46, respectively. Reference numeral 48 denotes a third fixing piece of the switch, which is formed by punching and bending a conductive plate material, and has one end inserted into a predetermined partition wall 18 and the other end extended to form a middle piece 49 for a miniature ball. Reference numeral 50 denotes a fixing pawl formed by cutting and bending in a figure-eight shape, and one or more of these are provided on each metal fitting, and each metal fitting is attached to the main body 9 by biting and fitting into the protrusion 23 provided on the inner surface of the main body 9. It is something. Reference numeral 51 denotes a rotor, which is formed by punching and bending an elastic conductive plate material into a substantially ring shape. Two hooking claws 52 are cut diagonally on the upper surface of the rotor, and two hooking claws 52 are cut diagonally from the outer circumference in the opposite direction to the hooking claws 52. Book sliding piece 53
It is cut and bent to protrude. Reference numeral 54 denotes a drive plate made of insulating material and formed into a substantially disk shape, with a rectangular through hole 55 bored in the center of the upper surface, a groove 56 around this, and a fitting hole 57 in the center of the lower surface. A plurality of serrated steps 58 are provided around the periphery. Reference numeral 59 denotes an operation plate, which is made of a steel plate and has a substantially T-shape, the vertical axis of which is twisted by a predetermined angle. 6
0 is a coil spring. Rotor 51, drive plate 5
4. The operation plate 59 and the coil spring 60 constitute a switch drive section 65. A pair of locking springs 61 are formed by bending a plate spring material. 62 is a plurality of mounting screws.

Next, their assembly and operation will be explained.

First, as shown in FIG. 5, the conductive metal fittings 36, 37, the first fixing piece 43, and the second
A fixed piece 45 and a third fixed piece 48 are incorporated. The terminal 38 is inserted into the terminal chamber 12 through the cut 13, and the ring-shaped switch input terminal 40 is inserted into the stepped portion 17 of the cylindrical portion 16.
Above, the load common terminal 41, the first load terminal 44, and the second load terminal 46 are placed on the load wire insertion hole 22. The side piece 42 is located from the groove 21 to the side surface of the miniature ball attachment hole 19, and the middle piece 49 is located at the center of the bottom side. These five conductive metal fittings are attached to the main body 9 by biting and fitting the fixing claws 50 provided thereon into the protrusions 23. The locking spring 61 is inserted into the terminal chamber 12.

Next, the sliding piece 53 of the rotor 51 is attached to the fixed piece 43,
Place it on the switch input terminal 40 while fitting it into the cylindrical part 16 toward the 45 and 48 sides.

Next, the coil spring 60 is inserted into the vertical shaft portion thereof, and the tip of the vertical shaft portion of the operation plate 59 whose one end is fixed at the horizontal shaft portion is passed through the through hole 55 from the groove 56 side of the drive plate 54. The other end of the coil spring 60 is fitted into the groove 56. rotor 51, drive plate 54,
The operation plate 59 and the coil spring 60 are the switch drive unit 6
5 is assembled, and the tip of this operation plate 59 is inserted into the switch operation hole 14 of the main body 9. From this state, the horizontal shaft portion of the operation plate 59 is fitted into the sliding groove 29 of the back cover 27, and the coil spring 60 is inserted into the cylindrical portion 28.
The mounting screw 62 is passed through the mounting hole 34 and the back cover 27 is screwed into the mounting screw hole 24 so as to close the opening of the main body 9.
The tip of the vertical shaft portion of the operation plate 59 is the switch operation hole 1
More prominent than 4.

In the wiring block 8 assembled in this way, the power terminal 38 and the locking spring 61 form a self-locking terminal section on the back side of the indoor electrical wiring insertion hole 10, and the indoor electrical wiring is inserted into the wiring block 8. The indoor electrical wiring 3 inserted through the hole 10 is locked and locked. To release this, a screwdriver-like object is inserted through the tool insertion hole 11, and the locking spring 61 is pushed and deformed to allow the indoor electrical wiring 3 to escape. In the switch part, when the operation plate 59 protruding from the switch operation hole 14 is pulled and released once, the horizontal axis portion of the operation plate 59 descends along the sliding groove 29, and the coil spring 6
Automatically rises due to the elasticity of 0. During this descent,
The drive plate 54 rotates due to the twist machined on the vertical axis of the operation plate 59, but the vertical surface of the serrated step 58 catches the tip of the hook 52 and the rotor 51 rotates together with it, so that no sliding occurs. The moving piece 53 also rotates. When ascending, the drive plate 54 rotates in the opposite direction, but the catch pawl 52 slides on the slope of the serrated step 58, and shortly before the operation plate 59 reaches the highest point, it touches the vertical surface of the next serrated step 58. Since the rotor 51 falls to the side, the rotor 51 remains in the rotated position, and only the drive plate 54 rotates in the opposite direction. Drive plate 5
The movement in number 4 is something that goes back and forth within a certain angle. As the rotor 51, which is electrically connected to the switch input terminal 40, rotates in sequence through such an operation,
The sliding piece 53 is the first fixed piece 43 and the second fixed piece 45,
Next, the circuit is disconnected and connected by sliding contact with only the first fixed piece 43, then only the third fixed piece 48, and then only the conductive metal fitting 36 (which are not energized because they have the same polarity).

The load common terminal 41, the first load terminal 44, the second load terminal 46, and their tongue pieces 47 are located on the back side of the load wiring insertion hole 22, and are of a non-reusable type (one that cannot be removed after accepting the wire once). It forms a self-locking terminal section.

The miniature ball attachment hole 19 is screwed into the base of the miniature ball using a screw 20 to hold it, and the side piece 42 contacts the side of the base and the middle piece 49 contacts the top of the base to establish an electrical connection. In this way, a bean ball socket is formed. When attaching the miniature ball, the middle piece receiving protrusion 30 receives the middle piece 49 to prevent the miniature ball cap from entering beyond a certain distance, and also receives it on the instrument body 1 so that the distance does not change due to deformation of the back cover 27. It is something. The retaining protrusion 31 is attached to the mounting collar 25, 3.
When it is attached to the instrument body 1 at step 5, it fits into a hole (not shown) provided in the instrument body 1 to prevent it from easily coming off, and serves as a stopper. Conductive metal fittings 3
Soldering terminal portions 39 provided at 6 and 37 are exposed through a U-shaped notch 33 of the back cover 27. This was designed so that an electric wire (not shown) for electrical connection could be connected to a ceiling hook (not shown) provided on the main body 1, and the notch 26 in the main body 9 It is for inserting electric wires.

In the above embodiment, the switch input terminal 40 of the conductive metal fitting 36 is shown as a ring, but the shape, size, and material of this part can be changed as long as it makes safe and reliable contact with the rotor 51. It's not something I'm particular about. Furthermore, the terminal section for connecting the indoor electrical wiring 3 and the load wiring (not shown) has been illustrated and explained using a self-locking terminal structure using a locking spring 61 and a tongue piece 47. For example, as shown in FIG. A nut-tightening type terminal structure using a terminal screw 63 and a nut 64 as shown in FIG. 1 is acceptable, and the terminal structure is not limited in any way.

[Effect of idea]

As explained above, this idea has a pair of power terminals that are directly connected to the indoor electrical wiring at one end of the main body, and the power terminals and the conductive metal fittings are integrally formed.
Connect one of the conductive metal fittings as a switch input terminal, connect the other conductive metal fitting as a side piece to the miniature bulb socket, and connect the middle piece of the switch and the miniature bulb socket with another conductive metal fitting different from the above-mentioned conductive metal fitting. Connect and install the required load terminal on the other end of the main unit.
Since they are assembled into individual wiring blocks, the total number of component parts is 15, which is a 40% reduction compared to the 25 components of the conventional three wiring components, which is a difference of 10 points. This makes it easier to manage parts and simplify assembly. In addition, conventionally, three wiring components and three internal wirings are prepared, and it is possible to reduce the time and effort required to assemble the device, such as the time and effort required to connect the respective terminals and the time and effort required to attach the device to the device body. Additionally, since the interior of the appliance is organized accordingly, the appearance becomes much better.

Furthermore, the screw hole provided in the main body for screwing the miniature ball cap is a through hole, and the position of the miniature ball cap is determined by the receiving protrusion on the back cover that comes into contact with the instrument body, so the screw hole described above is formed. There is no need for a slide core in the mold for this purpose, making manufacturing easier and improving accuracy. In addition, since the inner piece receiving protrusion of the miniature ball socket is provided on the inner and outer surfaces of the back cover, even if the miniature bulb is screwed in with strong force, this protrusion will come into contact with the instrument body and receive it, so the back cover itself will not be damaged. Since there is no need to add extra thickness and the thickness can be made thinner, soft and unbreakable materials can be used.

Furthermore, since the total current for multiple lights flows through the power terminals and switch parts, the conductive metal fittings in this wiring block are larger than the conventional individual parts, which have small conductive metal fittings. Since the surface area has also increased, the heat dissipation effect is correspondingly greater, which has the effect of keeping temperature rises low and increasing reliability.

Furthermore, since a soldering terminal portion is provided, even if an outlet component such as a hook ceiling is attached to the appliance body, electricity can be supplied to the appliance.

[Brief explanation of the drawing]

Figures 1 and 2 show an example of a conventional lighting fixture for four straight fluorescent lamps, with Figure 1 being a side view showing how it is mounted on the ceiling, and Figure 2 being a perspective view with main parts cut away. be. Figures 3 to 6 show an embodiment of the wiring block of this invention, with Figure 3 being a top view and Figure 4 being a top view.
The figure is a vertical sectional view taken along the line A-A shown in Figure 3, Figure 5 is an internal view of the main body with some parts removed and shows the arrangement of conductive metal fittings, etc., and Figure 6 is an exploded perspective view. It is a diagram. FIG. 7 is a sectional view showing the power supply terminal structure of another embodiment. In the figure, 1 is the appliance body, 3 is the indoor electrical wiring, 5 is the switch, 8 is the wiring block, 9 is the main body, 19 is the miniature ball mounting hole, 27 is the back cover, 36, 37
38 is a conductive metal fitting, 38 is a power terminal, 39 is a soldering terminal part, 48 is a third fixing piece, 61 is a locking spring, 6
3 is a terminal screw, and 64 is a nut. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A wiring block body attached to the device body and having an opening at the bottom and a through screw hole into which a miniature ball cap is screwed, a pair of power terminals attached to the inner wall surface of this wiring block body, and this power terminal. The wiring block has a conductive metal fitting constituting a switch terminal and a ball socket terminal that are electrically connected to the wiring block, and a cylindrical part that closes an opening of the wiring block body and houses and holds a switch drive part of which the switch terminal is a part. and a back cover having a receiving protrusion that comes into contact with the device body to position the miniature ball socket in the depth direction.