JPS5816629B2 - Terminal box for wire connection - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a terminal box for connecting electric wires that is provided to supply electricity to a controlled object, such as a solenoid valve, and more specifically, the present invention relates to a terminal box for connecting electric wires that is provided to supply electricity to a controlled object, such as a solenoid valve. A terminal accommodating space is formed which opens into the circuit board, and the circuit accommodating space is equipped with a circuit board equipped with circuit elements, the terminal accommodating space is equipped with terminal fittings for power connection, and the circuit board is equipped with a circuit board equipped with circuit elements. This invention relates to a terminal box for connecting electric wires to which a socket contact for connection is attached.

In conventional terminal boxes for connecting electric wires, the terminal fittings and the circuit board are attached to the box body separately, and then the terminal fittings and the circuit elements are connected. The disadvantage was that the work was very complicated and required a lot of manpower.

Therefore, the present invention aims to eliminate the above-mentioned drawbacks.
By simply attaching the terminal fittings to the box body, the circuit board can also be attached to the box body at the same time.
Moreover, it is an object of the present invention to provide a terminal box for connecting electric wires in which the terminal fittings can be easily attached to and removed from the box body.

The drawings showing the embodiments of the present application will be described below.

This embodiment is symmetrical in FIGS. 1, 2, and 4, and only one side will be described.

In Figs. 1 to 5, 1 is a box body, and in this embodiment, an outer box body 2 with one side open, and two inner box bodies 3, 3 fitted in the outer box body 2 so as to be removable. It is composed of.

Alternatively, these inner boxes 3, 3 may be formed integrally with the outer box 2 by opening the bottom of the outer box 2.

The box body is molded from a resin material such as plastic.

In the outer box body 2, reference numeral 4 denotes a storage space for storing the inner box body 3, and the interior thereof is divided by guide partitions 5, 5.

Reference numeral 6 denotes an electric wire port provided on the side wall, through which a power line (not shown) is passed from the outside into the storage space 4.

This wire port 6 may be provided on the bottom wall or a cover plate to be described later.

7.7 is an insertion hole for inserting the plug pins 9, 9 of a controlled object 8, for example, a solenoid (wet type, dry type, or housing type) in a solenoid valve, as shown in the imaginary line; It is drilled deep into the side wall.

Reference numeral 10 denotes a mounting hole provided in the bottom wall, into which a mounting screw 11 for fixing the outer box body 2 to the controlled object 8 is inserted.

Next, the planar shape of the inner box body 3 matches the storage space 4 so that the inner box body 3 can be positioned laterally within the storage space 4 of the outer box body 2.

In this inner box body 3, 12 is a relatively large circuit storage space that opens at the bottom in FIG. 4.5, and 13.13 is a relatively small terminal storage space that also opens at the top. .13 and the circuit storage space 12 are formed in communication with each other in the vertical direction.

Reference numeral 14 denotes a fitting hole into which a light-transmitting rod (to be described later) is fitted, and the upper end thereof is open to the upper surface, and the lower end thereof is open to the circuit storage space 12.

15. 15 is formed so as to protrude from both sides into the terminal storage space 13 as shown in FIGS. 10 to 13, with a gap sufficient to allow a terminal nut (described later) to enter the lower side of the terminal seat of the terminal fitting described later. The lower receiver is a portion that receives a portion of the terminal nut to prevent the terminal nut and terminal seat from falling off.

16. 16 is an upper receiver which is also located directly above the terminal seat and protrudes from both sides as shown in FIGS. 10 to 13 into the terminal storage space 13, and receives a part of the terminal seat. This prevents the terminal seat from lifting up, that is, from bending upward.

Alternatively, these upper receiver portions 16 and 16 may be omitted by providing rigidity to the terminal fitting.

The lower receiver section 15.15 and the upper receiver section 16.16 are similarly formed in the other terminal storage space 13.

Reference numeral 17.17 denotes a cutout portion formed on the side of the gap between the lower receiver portion 15.15 and the terminal seat, and a sixth It is left open as shown in the diagram.

Reference numeral 18 denotes a notch formed at a position facing the insertion holes 7, 7 of the outer box body 2, and allows the circuit storage space 12 to communicate with the insertion holes 7, 7.

19. As shown in FIG. 7, a board holding protrusion is formed to protrude into the circuit storage space 12, and receives a circuit board to be described later and holds it in position.

Next, 20 is a printed board exemplified as a circuit board housed in the circuit storage space 12, with an electric element 21 as a circuit element on the upper surface and printed wiring (not shown) on the lower surface.
are provided respectively.

The planar shape of the flint board 20 matches the circuit housing space 12 so that it can be positioned laterally within the circuit housing space 12.

22('' is a light emitter provided on the top surface of the printed board 20,
The electric element 21 is wired so that it emits light when energized.

As the light emitting body 22, any one that emits light when energized can be used, such as a filament lamp, a neon lamp, a light emitting diode, and a liquid crystal.

Reference numerals 23 and 23 denote a pair of terminal fittings established on the printed board 20.

In this terminal fitting 23, 24 is a terminal post integrally connected to the printed board 20, 25 is a terminal seat bent at right angles from the tip of the terminal post 24, and both constitute a terminal piece 26.

This terminal seat 25 has a through hole 27 bored therein.

A through hole 30 is also formed in a terminal nut 28 placed against the lower surface of the terminal seat 25 and a wire presser 29 29 placed against the upper surface of the terminal seat 25.

Alternatively, this presser foot 29 may be omitted.

A terminal screw 31 passes through the through hole 27, 30 and is screwed into the terminal nut 28.

Reference numeral 32.32 is an escape window formed by cutting out the portion of the terminal seat 25 and the terminal post 24 that overlaps with the portion 15.15 in projection, and when the terminal seat 25 is not attached to the terminal nut 28, the terminal seat 25 is placed on the lower side. The receiver has terminal storage space 1 without interfering with part 15.15.
It can be inserted and removed within 3.

In the terminal fitting 23, after the terminal piece 26 is inserted into the terminal storage space 13 from below, the terminal seat 25 and the lower receiver
, insert the terminal nut 28 from the side into the gap between
Thereafter, the wire presser 29 is applied and the terminal screw 31 is screwed into the terminal nut 28 to be assembled.

Next, reference numeral 33.33 denotes a socket contact provided on the lower surface of the printed board 20, which is located in the notch 13 of the inner case 3 and inserted into the insertion hole 7 of the outer case 2. Plug pin 9 inserted into γ,
The tip of No. 9 is inserted.

This socket contact 33°33 is the plug pin 9,9
Its cross-sectional shape is U-shaped as shown in FIG. 14, so that it can be inserted thickly upwards while being inserted.

Similarly, these socket contacts 33, 33 are connected to the terminal fittings 23, 23 via the electric element 21.

34 is a transparent rod inserted into the insertion hole 14 of the inner box body 3;
Stopper 34 formed and provided as shown in the figure
It is positioned at a.

One end of this light-transmitting rod 34 is located at a display window of a cover plate, which will be described later, and the other end faces the light-emitting body 22.

The light-transmitting rod 34 is made of any light-transmitting material such as glass or plastic.

The higher the refractive index of this material, the more preferable it is.

Further, the shape of the light-transmitting rod 34 may be changed so that the illuminated portion of the end face is made into a figure or character to display not only a light but also a pattern, an arrow, or the like.

A cover plate 35 is removably attached to the upper surface of the outer box body 2 with a mounting screw 36 so as to cover the storage space 4, and a display window 37 is formed at a position facing the transparent bar 34.

This cover plate 35 is made of any transparent or translucent material such as plastic.

In addition, the display window 37 may be configured with a through hole and one end of the light-transmitting rod 34 may be inserted into the through hole. In this case, the cover plate 3
5 may be made of an opaque material.

38 is Patsukin.

When assembling the above structure, the printed board 20 is first provided with the desired electrical elements 21, light emitters 22, socket contacts 33, 33, and terminal pieces 26, 26 in a mass production factory.

Next, insert the terminal pieces 26, 26 into the terminal storage space 1 of the inner box body 3.
3.13 respectively, and the printed board 20 is inserted into the circuit storage space 12 of the inner box body 3 until its upper surface abuts the board holding protrusion 19.19.

This causes the terminal strips 26, 26 to connect to their terminals e2s, 2
The terminal nut 2 is connected between the s and the lower receiver parts 15, 15...
8. Terminal storage space 1 with sufficient clearance to insert 28.
3.13, and other printed boards 20 and the like are stored in the circuit storage space 12.

After that, the terminal seat 25.25 and the lower receiver are connected to the part 15.15.
Insert the terminal nuts 1-28 and 28 respectively into the gaps between them, and apply the wire holders 29 and 29 to the upper surface of the terminal seats 25 and 25, respectively, and then press these wire holders 29 and 29. Pass the terminal screw 31.31 through the through hole 30°30 and the through holes 27, 27 of the terminal seat 25.25, and then insert the terminal nut 28°28.
Screw together.

As a result, the terminal pieces 26.26 are prevented from being pulled out downward as the terminal nuts B8, 28 are received by the lower receiver portions 15.15.

Therefore, the printed board 20 is integrally fixed to the inner box body 3 via the terminal pieces 26, 26, and there is no need to separately fix the printed board 20 to the inner box body 3.

After that, the inner box body 3 is inserted into the storage space 4 of the outer box body 2 attached to the controlled object 8 in a drawer type and stored therein,
Further, a transparent rod 34 is inserted into the insertion hole 14 of the inner box body 3.

The outer case 2 may be attached to the controlled object 8 after the inner case 3 is inserted into the outer case 2.

Thereafter, the plug pins 9, 9 of the controlled object 8 are inserted into the insertion holes 7.7 of the outer box body 2.

By inserting the plug pins 9, 9, the plug pins 9, 9
The tip of the socket contact 33.33 is inserted into the socket contact 33.33.

On the other hand, the power line is guided from the outside of the outer box body 2 through the wire port 6 into the storage space 4, and the end of the power line is guided from the cutout part 17.17 of the inner box body 3 to the terminal storage space 13.13. Terminal seat 25.25 of connection fitting 23.23 Holder 29.29
After that, the terminal screw 31.31 is tightened to crimp the end of the power line to the terminal seat 25.25.

Thereby, the power line is electrically connected to the plug pins 9, 9 via the electric element 21 in the middle.

Inserting the plug pins 9 and 9 and connecting the power line,
Since the printed board 20 equipped with complicated electric elements 21 is housed in the inner box body 3, even a machine shop with little electrical knowledge can easily and quickly perform the process.

Thereafter, a cover plate 35 is attached to the upper surface of the outer box body 2 using attachment screws 36.

Next, when this is used, when power is supplied to the power line, a special current controlled by the electric element 21 flows through the plug pins 9, 9 of the controlled object 8, and the controlled object 8 is actuated.

Further, when power is supplied to the plug pins 9, 9 as described above, the light emitter 22 emits light at the same time.

This light appears on the display window 37 of the cover plate 35 through the transparent bar 34.

Therefore, even from outside the terminal box, this display window 37
It is convenient to be able to confirm whether the controlled object 8 is energized by looking at the light emitted from the control object 8.

In this case, most of the light that enters the light-transmitting rod 34 from the light-emitting body 22 is totally reflected within the light-transmitting rod 34 and appears in a spread state in the display window 37, so that the light can be seen very brightly and , it looks as if the light emitting body 22 is in the display window 3T, so it can be seen very easily.

In addition, in the case of the above-mentioned configuration, if a terminal box for power connection is required due to differences in the electrical specifications of the controlled object 8, such as AC/DC conversion, changes in the light emitter, presence or absence of contact protection, etc. These requirements can be met very easily by preparing in advance various inner boxes housing circuit boards equipped with circuit elements that meet those requirements.

(Similarly, it is also sufficient to prepare various types of circuit boards as described above.

) That is, remove the cover plate 35 and connect the power line to the terminal fitting 23.2.
3, then pull out the inner box body 3 upwards, insert a new inner box body in its place, and then connect the power line to the new terminal fitting and attach the cover plate 35. I can do it.

In the above case, since the cross-sectional shape of the socket contactor 1-33.33 is formed in a U-shape that opens downward as shown in FIG. The inner box body 3 can be replaced while the inner box body 3 remains inserted, and the replacement can be easily performed with less manpower.

Furthermore, since the cross-sectional shape of the socket contacts 33, 33 is U-shaped as described above, even if there is a slight misalignment between the socket contacts 33, 33 and the plug pins 9, 9, the contact between the two will be poor. In addition, it is possible to eliminate problems caused by twisting, and even when the inner box body 3 is inserted and removed, the electrical connection can be stabilized.

The above also applies to repairs and inspections.

As described above, in the present invention, the circuit storage space of the box body is provided with a circuit board having circuit elements, and the terminal storage space of the box main body is provided with terminal fittings for power connection, and the circuit board is provided with a terminal fitting for power connection. A socket contact for connecting the controlled object is attached to the box, and the socket contact is exposed on the surface of the box body. 1 When using this, insert the plug pin of the controlled object into the socket plug and By simply connecting the power line to the terminal fitting, a special current controlled by the circuit element can be passed to the controlled object, and even those with little electrical knowledge can use it casually and easily.

In addition, even if a circuit board with circuit elements is provided in addition to the terminal fittings for connecting the power supply and the socket contacts for connecting the controlled object as described above, the circuit storage space and the terminal storage space The terminal fitting is composed of a terminal post, a terminal piece, a terminal nut, and a terminal screw, and the terminal post is integrally connected to the circuit board and is fitted into the terminal storage space from the circuit storage space side. In the terminal housing space, a receiving part is formed projecting from both sides at a distance sufficient to allow the terminal nut to enter the lower side of the terminal piece, and the terminal piece has a part projecting overlapping with the receiving part. is removed, and when a terminal nut is inserted from the side into the gap between the terminal piece and the receiver, the terminal fitting is prevented from being removed from the terminal storage space, and the circuit board and the box body are integrally attached. When assembling, the terminal fittings and circuit board are arranged in the terminal storage space and circuit storage! The terminal fitting and the circuit board can be simultaneously inserted into the box body by an extremely simple operation of inserting the terminal nut into the gap formed between the terminal piece and the receiver part. It has the advantage of being easy to assemble and requires less effort.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and Fig. 1 is a plan view of the terminal box, Fig. 2 is a plan view of the terminal box with the lid removed, and Fig. 3 is a plan view of the terminal box with the lid removed.
The figure is the right side view of figure 2, and figure 4 is the IV-IV of figure 1 and figure 2.
Line sectional view, Figure 5 is an enlarged view of the main part of Figure 4, Figures 6 and 7.
The figure is a partially cutaway perspective view of the terminal block case that forms part of the box body, Figure 8 is a perspective view of the translucent rod, and Figure 9 is a perspective view showing the terminal fittings, circuit elements, and circuit board. An exploded perspective view showing
Fig. 101 is a plan view of the terminal storage space with terminal screws and wire holders omitted, Fig. 11 is a sectional view along the cutting blade line in Fig. 10, Fig. 12 is a sectional view along the ■-■ line, and Fig. 13 The figure is a cross-sectional view taken along the line ■-■, and FIG. 14 is a cross-sectional view taken along the line ■-■ of FIG. 11...Box body, 12...Circuit storage space, 13...One terminal storage space, 15...
The lower receiver is part (the receiver is part), 20... Printed board (
circuit board), 21... electrical element (circuit element),
23...Terminal fitting, 24...Terminal pillar,
25...Terminal seat, 28...Terminal nut, 31...Terminal screw, 32...Escape window, 33...Socket contact .

Claims (1)

[Claims] 1 A box body is provided, in which a circuit storage space opening on one side and a terminal storage space opening on the other side are formed, and a circuit board equipped with a circuit element is placed in the circuit storage space and the terminal storage space is opened on the other side. In a terminal box for connecting electric wires, each space is provided with a terminal fitting for connecting a power source, and a socket contact for connecting a controlled object is attached to the circuit board, the circuit storage space and the terminal storage space are separated. The terminal fitting is formed in a continuous shape and is composed of a terminal post, a terminal seat bent from the terminal post, a terminal nut that is applied to the lower surface of the terminal seat, and a terminal screw that is screwed into the terminal nut. ,
The terminal post of the terminal fitting is integrally connected to the circuit board and inserted into the terminal storage space from the circuit storage space side, and the terminal post is inserted into the terminal storage space under the terminal piece with the terminal fitting stored in the terminal storage space. The receiver part is formed to protrude from both sides with a gap sufficient for the terminal nut to enter, and the receiver part is formed to protrude from both sides, and the receiver part is formed with a part so that the terminal fitting can be extracted without the terminal nut in the terminal piece. The part that overlaps projectively is excised,
A terminal box for connecting electric wires, wherein the terminal piece and the receiver are open on the side between the parts so that a terminal nut can be inserted from the side between them.