JP2000200634A - Terminal strip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To greatly reduce wiring cost by mounting an additional terminal strip with additional terminal fittings having a plurality of conductor connecting points to a main terminal strip in a single operation if a plurality of conductors are wired to the common terminals of the main terminal strip, for connecting the common terminals to the additional terminal fittings with short plates so that the common terminals can be added without machining new mounting holes or the like in a printed wiring board or the like. SOLUTION: A terminal strip includes a main terminal strip 2 having a plurality of terminal fittings 2a fixed in alignment to a mainbody 2b formed with an insulator, the mainbody 2b having an engagement hole 2e in the side face 2d, and an additional terminal strip 3 having additional terminal fittings 14 with a plurality of conductor connecting points 14a integrally formed thereon fixed to an additional block 3b formed with an insulator and an engagement member 3e integrally formed on the side face 3d of the additional block 3b so as to be engaged with the engagement hole 2e for ensuring mounting on the mainbody 2b in a single operation, wherein common terminal fittings 2t, 2u used as electrically common terminals out of the terminal fittings 2a can be electrically collected to the additional terminal fittings 14 with short plates 8, 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal board, and more particularly to an additional terminal having a plurality of conductor connection points when it becomes necessary to wire a plurality of conductors to a common terminal (common terminal) of a main terminal board. Simply attach the extension terminal board with metal fittings to the main terminal board with one touch, and connect the common terminal and the additional terminal fittings with a short plate, without making new mounting holes on the printed wiring board etc. The present invention relates to an epoch-making terminal board in which the number of common terminals can be increased and work costs can be significantly reduced.

[0002]

2. Description of the Related Art Terminal boards are generally and widely used as input / output contacts for printed wiring boards, programmable controllers, switchboards, and the like. It can be selected and used depending on the application.

[0003] However, for example, in a programmable controller, a common (common) contact is often provided at a rate of one for every 4, 8, or 16 bits, and a plurality of common terminals of a terminal board connected to the programmable controller are provided. In order to wire a conductor, another terminal board and a jumper wire must be prepared, the terminal board must be mounted on a board or the like, and then relayed by a jumper wire. there were.

Conventionally, when the number of conductors to be connected to the common terminal is variously different, it is necessary to form a mounting hole corresponding to each terminal board at a mounting position of an additional terminal board. was there.

[0005] For this reason, development of a terminal board configured so that common terminals can be easily added without taking the trouble of additional work such as additional mounting points has been awaited.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a plurality of terminal fittings in an electrically independent state. The main terminal board, which is fixed to the main body of the main terminal board made of an insulator in an aligned state and the lead terminals are arranged on each terminal fitting, and the additional terminal fittings integrally formed with a plurality of conductor connection points are used as insulators. An extension terminal board fixed to an extension block consisting of: a common terminal used as an electrically common terminal among the terminal fittings and the extension terminal fitting are electrically connected by a short plate, By making it possible to attach an extension terminal board to the main body with one touch, it is possible to extend the extension with the common terminal securely fixed without performing any additional processing on the mounting location such as a printed wiring board. This is to greatly reduce the material cost and working cost.

Another object of the present invention is to provide, in addition to the above structure, an engaging hole formed in a side surface of a main body of the main terminal board, and an engaging piece engaging with the engaging hole is provided on a side surface of an additional block of the additional terminal board. Is formed integrally with the main terminal board so that the additional terminal board is engaged with the main terminal board in at least one place so that the additional terminal board can be attached with one touch and securely.

Still another object is to provide, in addition to the above configuration, an engaging piece for engaging with the back surface of the main body of the main terminal board, which is integrally formed on the back face of the extension block of the additional terminal board. And the extension terminal board should be engaged in at least two places. Once the engagement has been made, even if the screw for fixing the shorting plate is loosened at the time of wiring of the conductor, etc. The purpose is to ensure that the engaged state is maintained without the terminal board coming off.

Another object of the present invention is to provide, in addition to the above-described structure, a concave portion formed in a side surface of the main body, and at least one convex portion having a shape conforming to the concave portion of the main body and at least one abutting side surface of the main body for a predetermined length. The two protrusions are integrally formed on the side of the extension block of the extension terminal board, so that the positioning when the extension terminal board is attached to the main terminal board is ensured, and the backlash after installation is generated. Is to prevent.

[0010]

In summary, the present invention (claim 1) comprises a main terminal board in which a plurality of terminal fittings are fixed in alignment with a body made of an insulator, and a plurality of conductor connection points. An additional terminal board formed by fixing the additional terminal fitting formed on the extension block made of an insulator, and a common terminal fitting and an additional terminal fitting used as an electrically common terminal among the terminal fittings are connected by a short plate. It is electrically connected so that an additional terminal board can be attached to the main body with one touch.

The present invention (Claim 2) provides an additional terminal in which a plurality of terminal fittings are fixed to a main body made of an insulator in an aligned state, and a plurality of conductor connection points are integrally formed. A common terminal fitting used as an electrically common terminal among the terminal fittings, comprising an extension terminal board which is fixed to the extension block made of an insulator and is engaged with the main body so that the extension terminal board can be securely attached with one touch. And an additional terminal fitting are electrically connected by a short plate.

Further, the present invention (claim 3) provides a main terminal board having a plurality of terminal fittings fixed to a body made of an insulator in an aligned state and having an engagement hole formed in a side surface of the body, and a plurality of conductive wires. An additional terminal board in which a connection terminal integrally formed is fixed to an expansion block made of an insulator, and an engagement piece that engages with an engagement hole is integrally formed on a side surface of the expansion block. A common terminal fitting used as an electrically common terminal among the terminal fittings and the additional terminal fitting are electrically connected by a short plate so that at least one place is engaged when the additional terminal board is attached. It is characterized by having comprised.

The present invention (claim 4) provides a main terminal board in which a plurality of terminal fittings are fixed to a main body made of an insulator in an aligned state and an engaging hole is formed in a side surface of the main body, and a plurality of conductive wires. An additional terminal fitting integrally formed with connection points is fixed to an additional block made of an insulator, and an engagement piece that engages with an engagement hole and an engagement piece that engages with a protrusion of the main body of the extension block. An additional terminal board integrally formed on each of the side surface and the back surface is provided, and the common terminal metal and the additional terminal metal used as an electrically common terminal among the terminal metal are electrically connected by a short plate, At least two positions are engaged when the additional terminal board is attached.

According to the present invention (claim 5), a plurality of terminal fittings are fixed in an aligned state to a main body made of an insulator in an electrically independent state, and a lead terminal is provided on each of the terminal fittings. The main terminal board having an engaging hole and a concave portion formed on a side surface of the main body, and an additional terminal fitting integrally formed with a plurality of conductor connection points are fixed to an additional block made of an insulator. An engaging piece that engages with the projection, a projection that is shaped to fit into the recess of the main body, and at least one protrusion that contacts the side surface of the main body for a predetermined length are integrally formed on the side surface of the extension block. An additional terminal board integrally formed on the back surface of the additional block is provided with an engagement piece that engages with the projection of the main body, and a common terminal fitting used as an electrically common terminal among the terminal fittings, Extension board and short plate Become electrically connected I and is characterized by being configured so as to made reliable positioning during installation of the additional terminal board.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings. A terminal board 1 according to the present invention includes a main terminal board 2 and an additional terminal board 3 in FIGS.

The main terminal board 2 comprises a plurality of terminal fittings 2a which are electrically independent and fixed to a main body 2b made of an insulator in an aligned state, and a lead terminal 9 is provided on each terminal fitting 2a. An engaging hole 2e and a concave portion 2f are formed on a side surface 2d of the main body 2b.

The main body 2b is made of, for example, a modified polyphenylene ether of a heat-resistant and flame-retardant grade, and has mechanical properties which are hardly dependent on temperature and humidity and excellent insulation properties. In particular, the reason why such a material having excellent insulation properties is used is that it can cope with a large current with a margin.

A hole 2g for supporting the pin 6a of the cover 6 is formed in the side surfaces 2d and 2h of the main body 2b.
The front surface 2i is formed with a projection 2j that the short plate 8 contacts when the short plate 8 is attached. Body 2b
A contact 2m with the lead terminal 4 is buried in the bottom surface 2k, and the contact 2m is electrically connected to each terminal fitting 2a. As shown in FIG. 6, a concave portion 2s and a projection 2v required for mounting the additional terminal board 3 are formed near the side surface 2d of the rear surface 2r of the main body 2b.

The terminal fitting 2a serves as an electrical connection point of the conductive wire 5, and is manufactured by, for example, bending a brass plate and press-fitting it into the main body 2b of the main terminal board 2. As shown in FIG. 9, the terminal fittings 2a are arranged in two upper and lower stages on the main body 2b without overlapping each other. This is to make it possible to wire the conductor 5 to all the terminal fittings 2a from the same direction while keeping the length of the main terminal board 2 in the longitudinal direction short.

Also, as shown in FIG.
The arrangement of “a” is shifted from the arrangement of the lower terminal fittings 2a by half the width of the terminal fitting 2a. This is because, as shown in FIG. 5, the lead terminals 9 connected to the terminal fittings 2a are arranged in an orderly manner without overlapping. Each terminal fitting 2a
Are provided with screws 18 for connecting the conductors 5, respectively, and the screws 18 are provided on the holding plate 1 for holding the conductors 5.
8a is attached.

As shown in FIG. 9, the lead terminal 4 is formed integrally with, for example, a resin-made coupler 10, and the main body 2b
The lead terminal 4 comes into contact with the contact point 2m by being fitted into the contact member 2 so that the terminal fitting 2a and the lead terminal 4 are electrically connected to each other. Also, the tip 4a of the lead terminal 4
Is formed in a stepped shape so as to be one step narrower.
This is a shape for stopping at an appropriate depth when the lead terminal 4 is inserted into a through hole (not shown) of the printed wiring board 13. In this embodiment,
The lead terminal 4 is bent in an L-shape, but is not limited to this, and may be a straight line.

As shown in FIG. 9, a bracket 11 and a bracket 12 are integrally formed with the coupler 10,
The bracket 11 has nuts 11a, 11b and 11c.
Are formed, and nuts 12a, 12
b and 12c are respectively formed.

The body 2b and the coupler 10 are fixed by fastening two screws 5n attached to the body 2b and the nuts 11a and 12a, respectively. As shown in FIG. 7, the screw 5n is prevented from coming off by, for example, an E-ring 2p.

The nut 11b is 90
° formed in different directions. This is because, as shown in FIG. 13, when the terminal board 1 is mounted on the printed wiring board 13 or the like, either one can be selected according to the mounting direction of the terminal board 1. The same applies to the nuts 12b and 12c.

As shown in FIGS. 9 and 12, the extension terminal board 3 has an extension terminal fitting 14 integrally formed with a plurality of conductor connection points 14a fixed to an extension block 3b made of an insulator. An engaging piece 3e that engages with the engaging hole 2e; a convex portion 3f that is shaped to fit the concave portion 2f of the main body 2b;
At least one protrusion 3c abutting over a predetermined length with the side surface 2d of the main body 2b is integrally formed on the side surface 3d of the extension block 3b. And is integrally formed on the back surface 3r of the main body 2b so that it can be attached to the main body 2b with one touch and securely.

The extension block 3b is connected to the main body 2 of the main terminal board 2.
The extension block 3b is formed with the same material as that of the extension block 3b.
Hole 3g for supporting 6a is formed. Holes 3i are formed on the side surfaces 3d and 3h of the extension block 3b to engage with the projections 16b of the cover 16 when the cover 16 is closed.

As shown in FIG. 12, the terminal fitting 14 has, for example, three conductor connection points 14a formed integrally with each other. For example, a brass plate is bent to form one horizontal portion 14b and three connection portions 14a. It is manufactured so that a pair of vertical portions 14c is formed. Holes 14d into which the screws 19 for connecting the conductor 5 are inserted are formed at the conductor connection points 14a of the horizontal portion 14b, respectively, and hook-like projections 14e for retaining are formed at the vertical portion 14c. .

The terminal fittings 14 are press-fitted one by one into the upper and lower stages of the extension block 3b.
A nut (not shown) corresponding to the screw 19 is integrally formed in b in advance. A holding plate 9 a for holding the conductive wire 5 is attached to the screw 19. The mounting of the nut is not limited to the integral molding to the extension block 3b. The nut may be fixed to the terminal fitting 14, or a thread may be formed on the terminal fitting 14 so as to have the function of the nut. It may be.

The arrangement of the terminal fittings 14 is different from that of the main terminal board 2, and the upper and lower stages have the same phase. This is because there is no lead terminal in the additional terminal board 3, and it is not necessary to consider the arrangement of the lead terminals.

The upper terminal fitting 14 is electrically connected to the common terminal fitting 2t used as common among the upper terminal fittings 2a of the main terminal board 2 by the short plate 9, and the lower terminal fitting 14 is connected to the main terminal board 2. 2 of the lower terminal fitting 2a, a common terminal fitting 2u used as a common and a short plate 8
Are electrically connected to each other and become common terminals. In the present embodiment, the lengths of the short plates 8 and 9 are different from each other in the drawing, but the present invention is not limited to this. For example, the short plates 8 and 9 may have the same length, and the common terminal fittings 2t and 2u and the upper and lower additional terminals What is necessary is just to be able to electrically connect with the metal fittings 14, respectively. In addition, the number of the conductor connection points 14a is three at one extension terminal fitting 14, but the number is not limited thereto, and may be four, six, or eight, for example.

The present invention is configured as described above,
Hereinafter, the operation will be described. When the coupler 10 is fitted into the main terminal board 2 and fixed with the screw 5n, the lead terminal 4 comes into contact with the contact 2m of the main terminal board 2 and becomes electrically conductive.
The main terminal board 2 is ready for use.

When the additional terminal board 3 is added, the projection 3f of the additional terminal board 3 and the recess 2f of the main terminal board 2 are fitted together so that the engaging pieces 3s engage with the recesses 2s. Then, the projection 3c comes into contact with the side surface 2d, and the engagement piece 3e is engaged with the engagement hole 2e to be in a state of tight contact. At this time, the engaging piece 3s engages with the concave portion 2s along the protrusion 2v, so that the additional terminal board 3 does not shift upward from the protrusion 2v, and the engaging piece 3e is firmly inserted into the engaging hole 2e. Engage. The actual addition work is a simple one-touch operation. Then, the common terminal fitting 2u and the lower additional terminal fitting 14 are connected by the short plate 8,
Further, by connecting the common terminal fitting 2t and the upper additional terminal fitting 14 with the short plate 9, each of them is electrically connected, and in this embodiment, three common terminals are added.

13 and 14 when the terminal board 1 is used.
As shown in FIG. 7, the main terminal board 2 is connected to the printed wiring board 13 attached to the slot 20 by soldering in the same manner as the other electronic components 21, and the brackets 11 and 12 are fixed by screws 22. And an additional terminal board 3 having as many conductor connection points 14a as necessary.
Is attached to the main terminal board 2 according to the above procedure, and the crimping terminals 5
The conductive wire 5 to which a is attached is wired to each terminal fitting 2a and the additional terminal fitting 14. Removal of the extension terminal board 3 is as simple as installation.
Can be replaced at any time.

The terminal fittings 2a and the additional terminal fittings 14 are arranged in two stages, upper and lower, so that they can be wired so that the conductive wires 5 come out in the same direction, and if the cover 6 and the cover 16 are closed, It is possible to prevent a short circuit or a fire accident due to accumulation of dust or the like (not shown).

[0035]

As described above, according to the present invention, a plurality of terminal fittings are fixed to the main terminal board body made of an insulator in an aligned state while being electrically independent of each other, and lead terminals are provided on each terminal fitting. Main terminal board, and an additional terminal board formed by fixing an additional terminal fitting integrally formed with a plurality of conductor connection points to an additional block made of an insulator. The common terminal and the additional terminal used as a simple terminal are configured to be electrically connected by a short plate, and the additional terminal board can be attached to the main body with one touch. This has the effect that the common terminal can be added in a state where it is securely fixed without applying the same, and as a result, there is the effect that material costs and work costs can be greatly reduced.

In addition to the above configuration, an engaging hole is formed in a side surface of the main body of the main terminal board, and an engaging piece engaging with the engaging hole is integrally formed on a side surface of the additional block of the additional terminal board. Therefore, since the additional terminal board is engaged with the main terminal board at at least one location, there is an effect that the terminal board can be attached with one touch and securely.

Further, in addition to the above configuration, the engaging piece for engaging with the back surface of the main body of the main terminal board is formed integrally with the back face of the additional block of the additional terminal board. Is engaged in at least two places, so once it is engaged, even if the screw for fixing the shorting plate is loosened during wiring of the conductor, etc., the extended terminal board is securely engaged without coming off. Is maintained.

Further, in addition to the above configuration, a concave portion is formed on the side surface of the main body, and a convex portion having a shape adapted to the concave portion of the main body and at least one projection portion abutting the side surface of the main body for a predetermined length. Since the extension terminal board is integrally formed on the side surface of the extension block, positioning when attaching the extension terminal board to the main terminal board can be ensured, and rattling after installation can be prevented. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a terminal board.

FIG. 2 is a front view of a terminal board.

FIG. 3 is a plan view of a terminal board.

FIG. 4 is a side view of the terminal board.

FIG. 5 is a bottom view of the terminal board.

FIG. 6 is a rear view of the terminal board.

FIG. 7 is a partially broken bottom view of the main terminal board.

FIG. 8 is a side view of the main terminal board.

FIG. 9 is an exploded perspective view of the terminal board.

FIG. 10 is a partial longitudinal sectional front view of the terminal board showing an engaged state between the main terminal board and the additional terminal board.

FIG. 11 is a partial cross-sectional plan view of the terminal board showing an engaged state between the main terminal board and the additional terminal board.

FIG. 12 is an exploded perspective view of an additional terminal board.

FIG. 13 is a perspective view of the terminal board showing a state where the terminal board is attached to a printed wiring board.

FIG. 14 is a perspective view of the terminal board showing a state where the terminal board is attached to a printed wiring board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal board 2 Main terminal board 2a Terminal fitting 2b Main body 2d Side surface 2e Engagement hole 2f Depression 2r Back surface 2t Common terminal fitting 2u Common terminal fitting 3 Additional terminal board 3b Additional terminal block 3c Projection 3e Engagement piece 3f Projection 3h Side 3r Back surface 3s Engagement piece 4 Lead terminal 8 Short plate 9 Short plate 14 Additional terminal fitting 14a Conductive wire connection point

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference)

Claims (5)

[Claims] A main terminal board in which a plurality of terminal fittings are fixed to a main body made of an insulator in an aligned state, and an additional terminal fitting in which a plurality of conductor connection points are integrally formed. An additional terminal board fixed to the main body, wherein the common terminal fitting used as an electrically common terminal among the terminal fittings and the additional terminal fitting are electrically connected to each other by a short plate, and one-touch with the main body. A terminal board characterized in that the additional terminal board can be attached thereto. 2. A main terminal board in which a plurality of terminal fittings are fixed to a main body made of an insulator in an aligned state, and an additional terminal fitting in which a plurality of conductor connection points are integrally formed. An additional terminal board which is fixed to the main body and which can be attached by one-touch by engaging with the main body, wherein the common terminal metal used as an electrically common terminal among the terminal metal and the additional terminal metal are short-circuited. A terminal board characterized by being configured to be electrically connected by a terminal board. 3. A main terminal board in which a plurality of terminal fittings are fixed to a main body made of an insulator in an aligned state and an engagement hole is formed in a side surface of the main body, and a plurality of conductor connection points are integrally formed. An additional terminal board in which the additional terminal fitting is fixed to an additional block made of an insulator, and an engagement piece for engaging with the engagement hole is integrally formed on a side surface of the additional block. Among the metal fittings, a common terminal metal used as an electrically common terminal and the additional terminal metal are electrically connected by a short plate, and at least one portion is engaged when the additional terminal board is attached. Terminal board characterized by the above-mentioned. 4. A main terminal board in which a plurality of terminal fittings are fixed to a main body made of an insulator in an aligned state and an engagement hole is formed in a side surface of the main body, and a plurality of conductor connection points are integrally formed. The additional terminal fitting is fixed to an additional block made of an insulator, and an engagement piece that engages with the engagement hole and an engagement piece that engages with the protrusion of the main body are provided on the side surface and the back surface of the additional block. An additional terminal board integrally formed with each other, wherein the common terminal metal used as an electrically common terminal among the terminal metal and the additional terminal metal are electrically connected by a short plate, A terminal board characterized in that at least two places are engaged when the terminal board is mounted. 5. A plurality of terminal fittings, each of which is electrically independent and fixed to a body made of an insulator in an aligned state, and a lead terminal is provided on each of the terminal fittings. A main terminal board in which a concave portion is formed, and an engaging piece that fixes an additional terminal fitting integrally formed with a plurality of conductor connection points to an additional block made of an insulator and engages with the engaging hole. A protrusion having a shape conforming to the recess of the main body and at least one protrusion that abuts on the side surface of the main body for a predetermined length are respectively formed integrally with the side surface of the extension block, and are engaged with the protrusions of the main body. An additional terminal board integrally formed on the back surface of the additional block, and a common terminal metal used as an electrically common terminal among the terminal metal and the additional terminal metal are connected by a short plate. Electrically connected A terminal board characterized in that the positioning of the additional terminal board during mounting is ensured.