JPH0766834B2 - Through terminal block - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block used for connecting electrical wiring, and more particularly to a through terminal block.

[Prior art and its problems]

2. Description of the Related Art Conventionally, various terminal blocks have been proposed as electric parts for orderly connecting a large number of complicated electric wirings and are provided for the convenience of users.

By the way, in this type of terminal block, the through-hole terminal block is usually provided with a plurality of terminal portions B provided with pressure-proof walls on the terminal block body A as shown in FIG. A cylindrical terminal metal fitting E is arranged as shown in FIG. 3 and terminal screws D, D are screwed onto the upper and lower ends of each terminal metal fitting E. The cylindrical terminal fitting E and the core member F for screwing the set screw to the B and both end mounting portions C are arranged in advance and then molded, which is so-called insert molding.

Therefore, each mold is required in accordance with the number of terminals (the number of terminals) of the terminal block, and the cost of the insert molding itself is high and there are many molding processes, so that the manufacturing is troublesome and the manufacturing cost increases. .

[Means for solving problems]

Therefore, in the present invention, the terminal block body is provided with a plurality of terminal portions having pressure resistant walls, terminal fittings as through conductors are arranged in these terminal portions, and terminal screws are screwed onto the upper and lower end portions of each terminal fitting. In the through terminal block, the whole terminal block body is divided into an upper body and a lower body, and a terminal fitting insertion hole is provided in each terminal portion of the upper body, while the terminal fitting insertion hole of the lower body is formed. The terminal fitting housing holes are provided at the positions corresponding to and the terminal fittings are loaded and arranged in these housing holes, and the terminal fittings loaded in the fitting holes are inserted into the terminal fitting insertion holes of the upper main body and both upper and lower bodies. By adopting a configuration in which the two are combined via a connecting means, not only the manufacturing is facilitated but also the cost is reduced.

In this case, as a concrete means for connecting the lower body and the upper body, as long as the number of poles (the number of terminals) is specified, both ends of the lower body and the upper body can be connected with a screw or an appropriate screw. It may be fixed with a tightening tool, but as a suitable and versatile means, according to the present invention, a mounting hole provided at a predetermined position of the upper body and an elastic member projecting at a position corresponding to the mounting hole of the lower body are provided. And a mounting claw portion having. Further, at this time, if the mounting holes of the upper main body are provided so as to face both sides of each terminal portion and the mounting claw portions of the lower main body are provided so as to project on both sides of the accommodation hole, the desired number of poles can be appropriately accommodated. It is possible because it is possible.

For the terminal fittings, use tubular terminal fittings that have narrow necks at the upper and lower ends of the tubular terminal fitting body. If the stepped portions are formed and the neck portions of the tubular terminal fittings are brought into contact with these stepped portions, the terminal fittings can be reliably positioned and fixedly held.

[Action]

The through terminal block according to the present invention includes a lower body having a desired number of poles (the number of terminals) and an upper body having a number of poles which is two more than the lower body, and is preliminarily mounted in each accommodation hole of the lower body. Insert a part (exposed portion) of the inserted terminal metal fitting into the terminal metal fitting insertion hole of the upper main body, combine these upper and lower main bodies through the connecting means, and further attach terminal screws to the upper and lower ends of each terminal metal fitting. Since they can be assembled by screwing, cost can be reduced by facilitating manufacturing.

〔Example〕

Next, a preferred embodiment of the through terminal block according to the present invention will be described in detail below with reference to the accompanying drawings.

1 to 5, the through terminal block according to the present invention is
For example, a terminal block main body 14 made of an insulating material such as phenol resin is provided, and the terminal block main body 14 is composed of an upper main body 10 and a lower main body 12 which are formed by vertically splitting the whole.

That is, the upper main body 10 has a plurality of terminal portions 20 arranged along the longitudinal direction of the substrate 16 via the pressure resistant wall 18 and has a metal fitting insertion hole 22 having a predetermined diameter at the center of each terminal portion 20, Further, rectangular mounting holes 24, 24 are formed on both sides of the position where each terminal portion 20 rises from the board 16.

On the other hand, the lower main body 12 is provided with similar pressure resistant walls 28 at positions corresponding to both longitudinal ends of the base plate 26 and the pressure resistant walls 18 of the upper main body 10. Further, a receiving hole 32 for the tubular terminal fitting 30 is provided at a position corresponding to each metal fitting insertion hole 22 on the base 26, and a mounting claw which itself has elasticity at a position corresponding to the mounting holes 24, 24. The parts 34, 34 are provided so as to face each other.

In this case, the tubular terminal fitting 30 has, for example, a thread groove inside the hexagonal tubular body 36 made of brass plated with nickel.
It is constructed by engraving 38 and providing small-diameter neck portions 40, 40 at both upper and lower ends of this cylindrical body 36, while the upper body 10
Steps 42 are formed at predetermined locations in the metal fitting insertion hole 22 of the lower body 12 and the metal fitting receiving hole 32 of the lower main body 12, and the bases of the small-diameter necks 40, 40 of the tubular terminal fitting 30 are formed by these steps 42. The dimensions are set so as to abut (see FIG. 3).

Further, in the accompanying drawings, reference numeral 44 is the base of the lower body 12.
26 is an auxiliary pressure-resistant wall projecting at the same position as the pressure-resistant wall 28 above, and these auxiliary pressure-resistant walls 44 are the substrate 16 of the upper main body 10.
It is fitted in a mounting groove 46 (see FIG. 4) formed immediately below the pressure resistant wall 18 and has a function of maintaining a predetermined pressure resistant performance required between the respective terminal portions.

The through terminal block according to the present invention configured as described above is provided with the lower main body 12 having a desired number of poles (the number of terminals) and the upper main body 10 having the number of poles larger than the lower main body 12 by two. The cylindrical terminal fitting 30 is placed in each accommodation hole 32 of the lower body 12, and the mounting claws 34, 34 of the lower body 12 are fitted into the mounting holes 24, 24 of the upper body 10 by utilizing its elasticity. Then, the terminal block body 14 is formed by uniting the upper and lower body bodies 10 and 12, and when the terminal block body 14 is formed in this way, terminal screws 48 and 48 are provided at both ends of each tubular terminal fitting 30. It is screwed and the remaining metal fitting insertion holes 22, 2 at both ends of the upper body 10
It is used by arranging a set screw 52 on the 2 via a cosmetic sleeve 50.

At this time, in the tubular terminal fitting 30, as is apparent from FIG. 3, the bases of the small-diameter neck portions 40, 40 come into contact with the step portions 42 formed in the fitting insertion hole 22 and the fitting receiving hole 32, respectively. Moreover, since the upper main body 10 and the lower main body 12 are united, they are firmly held, and therefore inconvenience such as rattling at the time of screwing the terminal screw 48 can be prevented as much as possible.

Further, FIG. 6 shows that mounting members 54, 54 also functioning as cosmetic sleeves are arranged in the remaining metal fitting insertion holes 22, 22 at both ends of the upper main body 10, and a cover member 56 is attached to these mounting members 54, 54. It is another embodiment of the mounted penetration terminal block according to the present invention, but in this case, not only the same effect as the above-mentioned embodiment is exhibited, but also adhesion of dust or the like to each terminal portion can be preferably prevented. It is a thing.

Further, FIG. 7 shows still another embodiment of the through terminal block according to the present invention, which uses, for example, a plate-shaped terminal fitting 58 formed by bending a nickel-plated brass plate material as the terminal fitting. However, in this case as well, the same effect as the above-described embodiment is obtained, and the upper body 10 and the lower body 12 are also provided.
Since the amount of material used for the terminal block body 14 composed of and the terminal fitting 58 itself can be simplified, the manufacturing cost can be further reduced and the weight can be reduced.

〔The invention's effect〕

As described above, the through terminal block according to the present invention is different from the conventional through terminal block in that the entire terminal block main body is divided into an upper body and a lower body, and the upper body and the lower body are separately formed. Since it is sufficient to cut the main body according to the desired number of poles (number of terminals) and combine them, it is not necessary to individually prepare the molding dies according to the number of poles, and the structure can be simplified, which facilitates manufacturing. Therefore, as compared with the through terminal block of the conventional example, the manufacturing cost can be reduced to about half and various advantages can be obtained.

The preferred embodiment of the through terminal block according to the present invention has been described above, but the present invention is not limited to this embodiment. For example, if the number of poles can be specified in advance, the mounting hole and the mounting claw portion can be specified. It is needless to say that various design changes can be made without departing from the spirit of the present invention, for example, by alternately or reversely providing the upper body and the lower body, or by appropriately omitting the number thereof to further simplify the structure. .

[Brief description of drawings]

1 is a front view of a preferred embodiment of the through terminal block according to the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is III-I of FIG.
II line enlarged sectional view, FIG. 4 is a IV-IV line sectional view of FIG.
Fig. 5a is a perspective view of the through terminal block shown in Fig. 1, and Fig. 5b is Fig. 5a.
FIG. 6 is a perspective view of an upper main body and a lower main body of the through terminal block shown in FIG. 6, FIG. 6 is a front view showing another embodiment of the through terminal block according to the present invention, and FIG. 7 is a further view of the through terminal block according to the present invention. FIG. 8 is a sectional explanatory view corresponding to FIG. 3 of another embodiment, and FIG. 8 is a partially sectional front view of a conventional through terminal block. 10 ... Upper body, 12 ... Lower body, 14 ... Terminal block body, 16 ... Board, 18 ... Pressure barrier, 20 ... Terminal part, 22 ... Metal fitting insertion hole,
24 ... Mounting hole, 26 ... Base, 28 ... Pressure-resistant wall, 30 ... Cylindrical terminal fitting, 32 ... Housing hole, 34 ... Mounting claw part, 36 ... Hexagonal cylinder, 38
… Screw groove, 40… Narrow neck, 42… Step, 44… Auxiliary pressure wall,
46 ... Mounting groove, 48 ... Terminal screw, 50 ... Decorative sleeve, 52 ... Set screw, 54 ... Mounting member, 56 ... Cover member, 58 ... Plate-shaped terminal fitting.

Claims (4)

[Claims] 1. A terminal block main body is provided with a plurality of terminal portions having pressure resistant walls, terminal fittings as through conductors are provided in these terminal portions, and terminal screws are respectively screwed to the upper and lower end portions of each terminal fitting. In the through terminal block formed by combining, the whole terminal block body is divided into an upper body and a lower body, and a terminal fitting insertion hole is provided in each terminal part of the upper body, while the terminal fitting insertion of the lower body is made. The terminal metal fitting housing holes are provided at the positions corresponding to the holes, and the terminal metal fittings are loaded and arranged in these housing holes. A penetrating terminal block, characterized in that the main body is united through a connecting means. 2. The connecting means for the upper and lower main bodies comprises a mounting hole provided at a predetermined position of the upper main body and an elastic mounting claw portion projecting at a position corresponding to the mounting hole of the lower main body. The through terminal block according to claim 1, wherein 3. A mounting hole according to claim 2, wherein the mounting holes are formed on both sides of each terminal portion of the upper body so as to face each other, and the mounting claw portions project from both sides of each accommodation hole of the lower body. Through terminal block described in. 4. The terminal fitting comprises a tubular terminal fitting having a tubular neck formed with a narrow neck at both upper and lower ends of the terminal fitting body, while a fitting insertion hole in the upper body and a fitting receiving hole in the lower body. 4. A step portion is formed at a predetermined location of the cylindrical terminal fitting, and the base of the thin neck portion of the tubular terminal fitting is configured to abut these step portions. The through terminal block according to any of the above.