JP3095221B1 - Terminal block - Google Patents

Abstract

An object of the present invention is to provide a terminal block with good workability that does not require a step of setting a test pin, which is a separate component, on a printed board in a conductivity / insulation test on the printed board. A terminal pin is provided on an upper surface of a housing.
3 are protruded. The terminal pins 13 fix the terminal block to the printed circuit board 23,
It is used as a test pin for holding the crocodile clip 25 when conducting an insulation test. At the tip of the terminal pin 13, in order to prevent the crocodile clip 25 from coming off,
It has a wide hook portion 13a. The hook portion 13a can enhance the reliability of the electrical connection between the crocodile clip 25 and the terminal pin 13. A closed circuit from the test power supply through the crocodile clip 25 and the terminal pin 13 to the load (various circuit components) on the printed circuit board 23 is stably formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a terminal block for electrically connecting an end of a wire inserted inside a main body (housing) to a terminal fitting provided inside the housing.

[0002]

2. Description of the Related Art Conventionally, as a terminal block for connecting an electric wire to a circuit on a printed circuit board, an end of the electric wire inserted from an opening of the main body is detachably sandwiched between a terminal fitting inside the main body and a leaf spring. A terminal block is known which electrically connects a wire and a pair of legs soldered to a printed circuit board.

[0003]

By the way, in the related art, the terminal block having the above-mentioned structure is provided on a printed circuit board, and the conductivity / insulation thereof is checked separately from the terminal block. The test pins are placed on a printed circuit board, and a circuit is accessed while the crocodile clip is sandwiched between the test pins. However, in the above method, there is a problem that the number of components increases because the test pins are required. Also, the test pin
Since a process of standing on a printed board is also required, there is a problem that the number of steps is large and workability is poor. Further, since the test pins are mounted on the printed circuit board, there is a problem that the circuit configuration of the printed circuit board is complicated.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a terminal block with good workability which does not require a step of setting a test pin, which is another component, on a printed circuit board in a conductivity / insulation test on the printed circuit board. is there.

Another object of the present invention is to provide a terminal block which does not require a complicated circuit configuration on a printed circuit board for conducting / insulating tests on the printed circuit board.

Further, another object of the present invention is to reduce the loss of the conductive material used in the manufacturing process, thereby reducing the waste of the conductive material and thereby reducing the cost. In providing a platform.

[0007]

The terminal block according to the present invention comprises:
The end of the wire inserted inside the main body is electrically connected to a terminal fitting provided inside the main body, and the base end side is integrally formed with the terminal fitting in a state electrically connected to the terminal fitting,
In addition, a terminal pin has a terminal pin protruding from a surface other than the bottom surface of the body to the outside of the body.

According to the above construction, the base end is formed integrally with the terminal while being electrically connected to the terminal.
Also, since the terminal side has a terminal pin projecting from the surface other than the bottom surface of the main body to the outside of the main body, the terminal pin can be used as a test pin for sandwiching a crocodile clip to conduct a conductivity / insulation test on a printed circuit board. . This eliminates the need for a step of placing a test pin, which is another component, on the printed circuit board, so that not only the number of components required for the test can be reduced, but also the workability in the test can be improved. Further, by using the terminal pins as test pins, unlike the conventional case where the conductivity / insulation test is performed using independent test pins,
There is also an advantage that the circuit configuration on the printed circuit board does not have to be complicated to set up the test pins.

[0009] The terminal pin is provided at a cut-off portion of a conductive material generated in a step of forming a terminal fitting from a predetermined conductive material, by removing a crocodile clip used in a conductivity / insulation test of a terminal block on a printed circuit board. Is cut and raised after processing for providing a wide hook portion capable of preventing the above.

In order to form the terminal pins as described above, a portion of the conductive material, which was conventionally discarded as a cut-off portion, is replaced with a crocodile clip used in a conductivity / insulation test of the terminal block on a printed circuit board. After a process of providing a wide hook portion that can prevent the detachment of the terminal fitting is performed, the cut portion is cut and raised, so that the terminal pin can be effectively used as a terminal pin integrated with the terminal fitting. Therefore, the cost does not increase due to the formation of the terminal pins, and unlike the case where the terminal pins are manufactured independently of the terminal fittings, the number of steps can be reduced. It is also possible to plan. Further, the wide hook portion can increase the reliability of the electrical connection between the crocodile clip and the terminal pin. That is, in the above-described conductivity / insulation test, a closed circuit from the test power supply through the crocodile clip and the terminal pin to the load (various circuit components) on the printed circuit board is stably formed.

The terminal block according to the preferred embodiment of the present invention further includes a pair of leg members protruding from the bottom of the main body to fix the main body to the printed circuit board. Further, the pair of leg members are formed integrally with the terminal fitting from a predetermined conductive material.

The end of the electric wire is electrically connected to the terminal fitting while being pressed against the terminal fitting by a spring member mounted inside the main body together with the terminal fitting. The main body is made of an insulating material, and has at least one or more protrusions or recesses on the side of the main body so that the plurality of main bodies are detachably connected to each other and can function integrally. . With this configuration, the terminal block having the above-described configuration can be used alone, in a set of two, in a set of five, in a set of ten, or in a set of ones according to various applications.
Since it is possible to set and use an arbitrary number according to the user's request, such as a set of 5 or a set of 20, it is possible to flexibly cope with various requests from the user. .

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view of a terminal block according to an embodiment of the present invention. FIG. 2 is a right side view of the terminal block shown in FIG.
FIG. 3 is a left side view of the terminal block shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along line AA 'of the terminal block shown in FIG.

As shown in FIG. 1, an electric wire insertion hole 3 communicating with a concave portion (indicated by reference numeral 15 in FIGS. 3 and 4) formed in the housing 1 is provided on the front upper portion of the housing 1 made of an insulating material. Is open. On the right side of the upper surface of the housing 1, the plate spring (indicated by reference numeral 19 in FIG. 4) mounted on the concave portion is bent upward from the terminal fitting main body (indicated by reference numeral 17 in FIGS. 3 and 4). A button mechanism 5 that is pressed to release the urging force on the portion (indicated by reference numeral 17a in FIG. 4) is protrudingly provided. In the button mechanism 5, the pressing force transmitting portion 5 a faces the concave portion through a through hole formed in the upper surface of the housing 1 so as to be able to advance and retreat. The button mechanism 5 has a shape as shown in FIG. 2 when viewed from the right side, and has a shape as shown in FIG. 3 when viewed from the left side.

At the center of the lower surface of the housing 1, a pair of leg members 7a and 7b (shown in FIG. 2 and FIG. 3 with two leg members 7a and 7b) made of a conductive material are inserted into the housing 1 through the recess. Each protrudes downward through a through hole formed in the lower surface. These leg members 7a and 7b are members for fixing the housing 1 to the printed board by inserting and soldering the through holes in the printed board (indicated by reference numeral 23 in FIG. 5). By soldering the leg members 7a and 7b to the printed circuit board, the circuit on the printed circuit board and the end of the electric wire inserted into the above-described recess through the electric wire insertion hole 3 are electrically connected via the terminal fitting body. Is done. The relationship between the leg members 7a and 7b and the terminal fitting main body will be described later in detail.

As shown in FIG. 3, the above-described recess 15 is opened on the left side surface of the housing 1. This recess 15
The terminal fitting body 17, which is composed of a large part of a substantially U-shaped groove-shaped conductive member, is detachable through the opening, and the upper and lower bent portions of the terminal fitting body 17 mounted in the recess 15. The leaf spring mounted in the space defined by the curved portion (indicated by reference numeral 17b in FIG. 4) has a shape that functions effectively.

Further, around the opening of the concave portion 15 on the left side surface of the housing 1, a plurality (in this embodiment, FIG.
4) cylindrical projections 9a, 9b, 9c, 9
d is formed. These cylindrical projections 9a to 9d are provided so that the housings 1 can be detachably connected to another housing having the same size and the same shape so that these housings can function integrally. It is. That is, the right side surface of another housing connected to the housing 1 is formed on the right side surface of the housing 1 as shown in FIG.
(4) cylindrical recesses 11a, 11
b, 11c and 11d are formed corresponding to the columnar projections 9a to 9d. By fitting the cylindrical projections 9a to 9d into the cylindrical recesses 11a to 11d, respectively, it is possible to connect another housing to the housing 1 in a detachable state.

Further, in the present embodiment, one terminal pin 13 is protruded from the upper surface of the housing 1. This terminal pin 1
Reference numeral 3 denotes a crocodile clip (reference numeral 25 in FIG. 5) for fixing the terminal block according to the present embodiment to a printed circuit board and performing a conductivity / insulation test on the printed circuit board, as described later.
This is used as a test pin for sandwiching The distal end of the terminal pin 13 has a wide hook portion 13a for preventing the crocodile clip from coming off. The hook portion 13a allows the crocodile clip and the terminal pin 13
The reliability of the electrical connection between them.

The terminal pin 13 has a shape as shown in FIG. 2 when viewed from the right side, and has a shape as shown in FIG. 3 when viewed from the left side. In the above-described conductivity / insulation test, by inserting a crocodile clip into the terminal pin 13, a load on the printed circuit board is supplied from a test power source through the crocodile clip, the terminal pin 13, the terminal fitting main body 17, and the pair of legs 7a and 7b. A closed circuit to (various circuit components) is formed stably. The relationship between the terminal pin 13 and the terminal fitting main body 17 will be described later in detail.

In this embodiment, the pair of leg members 7
a, 7b, and the terminal pin 13 are each formed by cutting and raising a substantially U-shaped groove-shaped conductive member that becomes the terminal fitting main body 17, respectively, so that the leg members 7a, 7
Both the terminal b and the terminal pin 13 are configured to be integrated with the terminal fitting main body 17. As described above, after mounting the leaf spring in the space defined by the upper bent portion and the lower bent portion, the terminal fitting body 17 closes the opening of the concave portion 15 with the substantially rectangular base 17c. Thus, it is mounted in the concave portion 15. As a result, in the mode shown in FIG. 3, the terminal pin 13 protrudes upward from the upper surface of the housing 1, and the pair of leg members 7a and 7b protrudes downward from the lower surface of the housing 1.

As shown in FIG. 4, the base of the terminal pin 13 is integrally connected to the above-mentioned upper bent portion 17a of the terminal fitting main body 17, while a pair of leg members 7a, 7b is provided.
Are integrally connected to the above-described lower bent portion 17b. The leaf spring 19 has an upper bent portion 17a at its oblique upper end.
Is biased in a direction to push upward from below. And
The tip of the pressing force transmitting portion 5a of the button mechanism 5 described above abuts on a portion of the leaf spring 19 near the oblique upper end. That is, the urging force of the leaf spring 19 can be nullified by pressing the button mechanism 5.

FIG. 5 is a sectional view when the terminal block shown in FIG. 1 is mounted on a printed circuit board and a conductivity / insulation test is performed.

In FIG. 5, the leg members 7a and 7b are fixed to the printed circuit board 23 by solders 21a and 21b, and an end 27a of the electric wire 27 inserted into the concave portion 15 from the electric wire insertion hole 3 is a leaf spring 19a. Upper bending part 1 by the urging force of
7a. Alligator clip 25, terminal pin 1
3. A closed circuit is formed from the test power supply (not shown) to the load (various circuit components) (not shown) on the printed circuit board 23 through the terminal fitting body 17 and the leg members 7a and 7b.

When the wire end 27a is inserted into the recess 15, the button mechanism 5 is kept pressed (that is, the urging force of the leaf spring 19 to the upper bent portion 17a is invalidated). The wire end 27 a is guided from the wire insertion hole 3 to the recess 15. After that, if you release the pressing operation,
Since the urging force of the leaf spring 19 becomes effective, the urging force causes the wire end 27a to be folded into the upper bent portion 17a and the leaf spring 19.
And is fixed in the recessed portion 15 while being sandwiched between them. Wire end 2 fixed to recess 15 in the manner described above
Also when removing the wire 7a, the pushing operation is released after the wire end 27a is pulled out with the button mechanism 5 kept pressed.

According to the above configuration, the terminal block 13 is used as a test pin for sandwiching the crocodile clip 25, and the conductivity / insulation test of the terminal block is performed on the printed circuit board 23, whereby the test as a separate component is performed. Since a step of setting pins (not shown) on the printed circuit board 23 is not required, the number of components required for the test can be reduced. In addition, workability in the above test can be improved.

Further, the terminal pin 13 is formed as a terminal pin 13 on a cut-off portion of a conductive material generated in the step of forming the terminal fitting main body 17 from the substantially U-shaped groove-shaped conductive member, that is, as described above. As described above, the cut-off portion of the conductive material is provided with a wide hook portion capable of preventing detachment of the alligator clip (indicated by reference numeral 25 in FIG. 5) used in the conductivity / insulation test of the terminal block on the printed circuit board 23. In order to form by cutting and raising by performing the processing of providing 13a, a portion of the conductive material which has been conventionally discarded as a cut-off portion is effectively used as the terminal pin 13 integrated with the terminal fitting main body 17. Can be. Therefore, the cost does not increase due to the formation of the terminal pin 13, and the terminal pin 1 is independent of the terminal fitting body 17.
Unlike the case of manufacturing the substrate 3, the number of man-hours can be reduced, so that the cost of the entire substrate unit for the user can be reduced. Further, by using the terminal pins 13 as test pins, unlike the conventional case where the above-described conductivity / insulation test is performed using independent test pins, the printed circuit board 23 is used to set the test pins.
There is also an advantage that the above circuit configuration does not have to be complicated.

Further, columnar projections 9a to 9d are formed on the left side of many housings including the housing 1, and cylindrical recesses 11a to 11d are formed on the right side. By fitting the cylindrical projections 9a to 9d into the cylindrical recesses 11a to 11d respectively, another housing can be detachably connected to the housing 1. Therefore, a large number of housings can be detachably connected to each other, and these many housings can function integrally. Therefore, the terminal block having the above-described configuration may be used alone or in a set of two, in a set of five, in a set of ten, in a set of 15, or in a set of twenty, depending on various applications. Since it can be used by setting it to an arbitrary number according to the user's request, there is an advantage that it can flexibly cope with various requests from the user.

It should be noted that the above-mentioned contents relate only to one embodiment of the present invention, and do not mean that the present invention is limited to only the above-described contents.

[0030]

As described above, according to the present invention,
In a conductivity / insulation test on a printed circuit board, it is possible to provide a terminal block with good workability that does not require a step of setting a test pin, which is another component, on the printed circuit board.

Further, according to the present invention, it is possible to provide a terminal block which does not require a complicated circuit configuration on a printed board for conducting / insulating tests on the printed board.

Further, according to the present invention, there is provided a terminal block capable of reducing waste of a conductive material used in a manufacturing process, thereby reducing waste of the conductive material and thereby reducing the cost. Can be provided.

[Brief description of the drawings]

FIG. 1 is a front view of a terminal block according to an embodiment of the present invention.

FIG. 2 is a right side view of the terminal block shown in FIG.

FIG. 3 is a left side view shown in FIG. 1;

FIG. 4 is a sectional view taken along line AA ′ of the terminal block shown in FIG. 1;

FIG. 5 is a diagram showing a terminal board shown in FIG. 1 mounted on a printed circuit board;
Sectional drawing at the time of conducting the conductivity / insulation test.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 3 Electric wire insertion hole 5 Button mechanism 5a Pressing force transmission part 7a, 7b Leg member 9a, 9b, 9c, 9d Cylindrical protrusion 11a, 11b, 11c, 11d Cylindrical recess 13 Terminal pin 13a Hook part 15 Concave 17 Terminal fitting Main body 17a Upper bent portion 17b Lower bent portion 17c Base 19 Leaf spring 21a, 21b Solder 23 Printed circuit board 25 Alligator clip 27 Electric wire 27a Electric wire end

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 4/48 H01R 9/00 H01R 9/22-9/28

Claims (5)

(57) [Claims] 1. A terminal block for electrically connecting an end of an electric wire inserted into a main body to a terminal fitting provided in the main body, wherein the terminal fitting is electrically connected to a base end side of the terminal fitting. A terminal pin protruding from a surface other than the bottom surface of the main body to the outside of the main body, wherein the terminal pin is formed in a step of forming the terminal fitting from a predetermined conductive material. The cut-off portion of the cut-off portion of the conductive material is provided with a process of providing a wide hook portion capable of preventing detachment of the crocodile clip used in the conductivity / insulation test of the terminal block on the printed circuit board. Stand. 2. The terminal block according to claim 1, further comprising a pair of leg members protruding from a bottom portion of the main body for fixing the main body to a printed circuit board. 3. The terminal block according to claim 1, wherein the pair of leg members are formed integrally with the terminal fitting from the predetermined conductive material. 4. The terminal block according to claim 1, wherein the end of the electric wire is pressed against the terminal fitting by a spring member adhered inside the main body together with the terminal fitting. And a terminal block electrically connected to the terminal fitting. 5. The terminal block according to claim 1, wherein the main body is made of an insulating material, and a plurality of main bodies are detachably connected to the main body side portion. A terminal block provided with at least one or more projections or depressions so that the plurality of main bodies can function integrally.