JPH11121069A - Terminal block structure - Google Patents

Abstract

(57) [Summary] [Problem] The manufacturer can save the man-hour for screw tightening.
Even with a terminal block structure having a large number of connection terminals, the manufacturing cost can be reduced, and on the user side,
Provided is a terminal block structure capable of greatly improving the workability without the screw loosening work and only the tightening work. SOLUTION: A screw holding member 10 is provided on a terminal block main body 1, and a plurality of screw mounting portions 12 are provided on the screw holding member 10 and a strip-shaped member main body 10A.
To the hole 1 larger than the diameter of the head 18A of the terminal screw 18.
3, an insertion portion 14 for inserting the terminal screw 18 from the outside of the screw holding member 10 into the hole portion 13, and a peripheral portion of the hole portion 13 formed at a predetermined interval in the circumferential direction to hold the terminal screw 18. The holding claw 15 was used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, a power supply,
The present invention relates to a terminal block structure used for connection with an electronic device that receives power supply from the power supply.

[0002]

2. Description of the Related Art As a conventional terminal block structure of this type,
As shown in FIG. 8, a connection terminal 30 for power supply connection and a plurality of connection terminals 31 for device connection to which various electronic devices to be supplied with power from this power supply are connected to one terminal block main body 32. It is a configuration provided. And connection terminals 30, 3
Reference numeral 1 denotes a configuration in which a square screw washer 36 is rotatably mounted on the terminal screw 35.

That is, as shown in FIGS. 8 and 9, a plurality of terminal blocks 33 are separated from each other by insulating ribs 34 at predetermined intervals in the left-right direction on the terminal block main body 32. A screw hole 38 is formed in a base portion 33A made of metal of these terminal block portions 33.
Connection terminals 30 and 31 are screwed to the terminal block 33.

When the terminal block is to be shipped, all the connection terminals 30 and 31 are fastened to the screw holes 38 with a torque driver. When the terminal block is used, all the connection terminals 30 and 31 are connected. After loosening the connection terminal 31 with a screwdriver, a lead wire from a power supply is connected to the connection terminal 30 for power supply connection, lead wires of various electronic devices are connected to the connection terminals 31 for connecting a plurality of devices, and the connection terminal is again connected. 30, 31
Was tightened with a screwdriver.

In this case, the crimp terminal 39 of the terminal of the lead wire is used.
Is a U-shaped one as shown in FIG. 9, the connection terminals 30 and 31 are inserted into the loosened connection terminals 30 and 31, and the connection terminals 3
The terminals 0 and 31 are tightened by a screwdriver and crimped by the screw washer 36 and the base 33A of the terminal block 33. When the crimp terminal 39 of the terminal of the lead wire is round (O-type), the connection terminal 30 is connected. , 31 are removed from the screw holes 38 and the crimp terminals 39
The terminal screws 35 are inserted into the screw holes 38 of the terminal block 33 again with a torque screwdriver, and the screw washers 36 and the base 33A of the terminal block 33 are screwed. Then, the crimp terminal 39 is crimped.

[0006]

However, in the conventional terminal block structure, the terminal screws 35 of the connection terminals 30 and 31 for power supply connection and equipment connection are loosened or removed, and after wiring, the connection terminals are again reconnected. Since the terminal screws 35 of the connection terminals 30 and 31 need to be tightened, the screwdriver man-hour is required on the manufacturer side, and the manufacturing cost is reduced to the number of terminals in the terminal block structure having a large number of connection terminals 30 and 31. There is a problem that the work is performed in proportion to the increase, and the user has to loosen and tighten the screws a lot, and the workability is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the number of screw tightening steps on the manufacturer side and to provide a terminal block having a large number of connection terminals. Even with the structure, the terminal block structure that can reduce the manufacturing cost and provide only the tightening work without the user's loosening work on the user side, which can greatly improve the workability. Is to do.

[0008]

In order to achieve the above object, a terminal block structure according to the first aspect of the present invention is provided with a plurality of terminal block sections provided on a terminal block body, and provided on these terminal block sections. A screw hole is formed in the base portion, and a connection terminal is rotatably mounted on the terminal screw with a screw washer. When wiring, the connection terminal is screwed with the terminal screw into the screw hole to form the terminal block. In the terminal block structure adapted to be attached to the portion, a screw holding member is provided on the terminal block main body, and the connection terminal can be detachably attached to the screw holding member without screwing the terminal screw into the screw hole. It is characterized by holding.

With this configuration, on the manufacturer side, the terminal block structure is shipped in a state where the terminal screw is not screwed into the screw hole of the terminal block portion and the connection terminal is held by the screw holding member. Therefore, the man-hour for screw tightening can be omitted on the manufacturer side, and the manufacturing cost can be reduced even with a terminal block structure having a large number of connection terminals.

On the user side, the terminal screw of the connection terminal held by the screw holding member is set with a tool (torque) by aligning the crimp terminal of the terminal of the lead wire along the base of the plurality of terminal blocks. Using a screwdriver), push the terminal screw into the terminal block, screw the terminal screw into the screw hole, attach the connection terminal to the terminal block, and crimp the crimp terminal. Since only this is done, workability is improved.

Further, since the connection terminal is held by the screw holding member, there is no danger of the connection terminal being lost. In addition, the connection terminal is not completely removed from the terminal base portion, and the connection terminal is round (O-shaped). ) Can be attached crimp terminal
The workability can be greatly improved.

In order to achieve the above object, a terminal block structure according to a second aspect of the present invention is the terminal block structure according to the first aspect, wherein the screw holding member is provided in a strip-shaped member main body. In addition to holding the connection terminal, a screw mounting portion is provided to release the holding of the terminal screw by pressing the terminal screw with a tool and move the terminal screw to the screw hole side.

With this configuration, on the manufacturer side, the terminal block structure is shipped in a state where the terminal screw is not screwed into the screw hole of the terminal block portion and the connection terminal is held by the screw holding member. Therefore, the man-hour for screw tightening can be omitted on the manufacturer side, and the manufacturing cost can be reduced even with a terminal block structure having a large number of connection terminals.

On the user's side, the terminal screw of the connection terminal held by the screw holding member is set with a tool (torque) by aligning the crimp terminal of the terminal of the lead wire along the bases of the plurality of terminal blocks. Using a screwdriver), push the terminal screw into the terminal block, screw the terminal screw into the screw hole, attach the connection terminal to the terminal block, and crimp the crimp terminal. Since only this is done, workability is improved.

Further, since the connection terminal is held by the screw holding member, there is no danger of the connection terminal being lost. In addition, the connection terminal is not completely removed from the terminal base, and the connection terminal is round (O-shaped). ) Can be attached crimp terminal
The workability can be greatly improved.

In order to achieve the above object, a terminal block structure according to a third aspect of the present invention is the terminal block structure according to the second aspect, wherein the screw mounting portion is provided on a head of the terminal screw. A hole portion having a diameter larger than a diameter, an insertion portion for inserting the terminal screw from the outside of the screw holding member into the hole portion, and a terminal screw formed at a peripheral portion of the hole at a predetermined interval in a circumferential direction. And a holding claw portion for holding the holding member.

With this configuration, on the manufacturer side, the terminal block structure is shipped in a state where the terminal screws are not screwed into the screw holes of the terminal block portion and the connection terminals are held by the screw holding members. Therefore, the man-hour for screw tightening can be omitted on the manufacturer side, and the manufacturing cost can be reduced even with a terminal block structure having a large number of connection terminals.

On the user side, the terminal screw of the connection terminal held by the screw holding member is set with a tool (torque) by aligning the crimp terminal of the terminal of the lead wire along the base of the plurality of terminal blocks. Using a screwdriver), push the terminal screw into the terminal block, and the terminal screw pushes out the retaining claw and moves to the screw hole side. Unlike crimping the terminals, there is no work to loosen the screws and only the tightening work, so that the workability is improved.

In order to achieve the above object, a terminal block structure according to a fourth aspect of the present invention is the terminal block structure according to the third aspect, wherein the base of the holding claw is made thin.

With this configuration, not only can the function and effect similar to the function and effect of the third aspect of the invention described above be provided,
When the terminal screw of the connection terminal held by the screw holding member is pushed into the terminal base using a tool (torque screwdriver), the terminal screw pushes out the holding claw, but the base of the holding claw is thin. Because of this, the holding claws can be pushed and spread more reliably.

According to a fifth aspect of the present invention, there is provided a terminal block structure according to the first or second aspect.
Alternatively, in the terminal block structure according to claim 3 or 4, the screw holding member also functions as a cover.

With this configuration, it is possible to not only achieve the same operation and effect as the operation and effect of the first aspect of the present invention,
The screw holding member can be used as a cover for the terminal block.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a disassembled state in which a part of a terminal block portion in a terminal block structure according to the present invention is omitted.
4 is a perspective view of a terminal block in the terminal block structure, FIG. 3 is a cross-sectional view of the terminal block in the terminal block structure with a part thereof omitted, and FIG.
FIG. 2 is a plan view of the terminal block structure in which a screw holding member is partially omitted.

The terminal block structure according to the present invention includes a terminal block body 1 which is a synthetic resin molded product.
The terminal block forming portion of the vertical wall portion 2 and the left side of the vertical wall portion 2,
It has side walls 3A and 3B connected to the right end, and is located between the side walls 3A and 3B in this terminal block forming portion.
At predetermined intervals in the left-right direction, a plurality of terminal block portions 4
Adjacent parts are separated by insulating ribs 5 and provided. A metal base 6 is formed on these terminal blocks 4, and a screw hole 7 is formed on the surface of the base 6, and a terminal portion (not shown) of the base 6 is It protrudes into the terminal block main body 1 and comes into contact with a printed circuit board (not shown) housed in the terminal block main body 1.
On the opposing surfaces of the left and right side walls 3A and 3B, slit-shaped engagement holes 8 are formed, respectively.

As shown in FIG. 1, the screw holding member 10 has a strip-shaped member main body 10A made of resin (nylon), and the left and right ends of the member main body 10A have engaging projections. 11 protrudes. A plurality of screw mounting portions 12 are formed on the surface of the member body 10A at predetermined intervals in the left-right direction. These screw mounting portions 12 are provided with a predetermined interval in the circumferential direction at a circular hole 13, an insertion portion 14 extending from the side edge 10 a of the member body 10 </ b> A to the hole 13, and a peripheral edge of the hole 13. And the holding claw 15 formed in the above. A concave portion 16 is formed at the base of the holding claw portion 14 so that the holding claw portion 14 is easily bent, and is thinned.

The diameter D1 of the hole 13 is larger than the diameter D2 of the head 18A of the connection terminal 17, and the diameter D3 of the circle a formed by the tip of the holding claw 14 is smaller than the diameter D2 of the head 18A. I have.

The connection terminal 17 has a structure in which a square screw washer 19 is rotatably mounted on a terminal screw 18.

The screw holding member 10 engages the engaging projections 11 provided on the left and right ends thereof with the engaging holes 8 of the left and right side walls 3A and 3B of the terminal block main body 1, and It is attached to the main body 1. In this case, the hole 13 of the screw mounting portion 12 is located immediately above the screw holes 7 of the plurality of terminal block portions 4.

Then, the screw mounting portion 1 of the screw holding member 10
2, a connection terminal 17 is detachably mounted. That is, as shown in FIG. 3, the connection terminal 17 is configured such that the shaft portion 20 between the head portion 18 </ b> A of the terminal screw 18 and the screw washer 19 is inserted into the hole portion 13 from the insertion portion 14 to hold the head portion 18 </ b> A. Part 14
It is mounted on the screw mounting portion 12 so as to be hooked on the screw. Therefore, the terminal screw 18 of the connection terminal 17 is held by the screw holding member 10, and the terminal screw 18 is located at the top of the screw hole 7 without being screwed into the screw hole 7 of the terminal block 4. . Note that, of the connection terminals 17, those on the end side of the terminal block main body 1 are connection terminals for power supply connection,
Others are connection terminals for connecting devices.

Therefore, the terminal block structure on the manufacturer side is such that the terminal screw 18 is not screwed into the screw hole 7 of the terminal block 4 and the connection terminal 17 is held by the screw holding member 10. Will be shipped.

When wiring is performed on the terminal block structure on the user side, the following is performed. That is, the crimp terminal (U-shaped crimp terminal and round (O-shaped) crimp terminal) 39 of the terminal of the lead wire is arranged along the base 6 of the plurality of terminal blocks 4, and the screw holding member 10 The terminal screw 18 of the connection terminal 17 held by the terminal screw 18 is pushed into the terminal base part 4 side by using a torque driver (not shown) as a tool, so that the terminal screw 18 pushes out the holding claw part 14 and The crimp terminal 39 is crimped by the screw washer 19 and the base 36 of the terminal block 4 by screwing into the screw hole 7.

In this way, all the connection terminals 17 are screwed into the screw holes 7 of the terminal block 4, and the remaining screw holding member 10 is used as it is as a cover.

In the embodiment described above, the terminal block structure on the manufacturer side is such that the terminal screw 18 is
Since the connection terminals 17 are shipped in a state where they are held by the screw holding members 10 without being screwed into the screw holes 7, the manufacturing side of the manufacturer can save a large number of screw tightening steps, and a large number of connection terminals 17 can be provided. , The manufacturing cost can be reduced.

On the user's side, the crimp terminal 39 of the terminal of the lead wire is arranged along the base 6 of the plurality of terminal blocks 4 so that the terminal of the connection terminal 17 held by the screw holding member 10 is connected. Screw 18 using a torque screwdriver
When the terminal screw 18 is pushed into the terminal block 4 side, the terminal screw 18 spreads the holding claw section 14 and moves to the screw hole 7 side. In order to crimp the crimp terminal 39 with the base portion 36, there is no work to loosen the screws and only the tightening work, so that the workability is improved.

Further, the connection terminal 1 is provided by the screw holding member 10.
Since the connection terminals 17 are held, there is no danger of the connection terminals 17 being lost, and the round (O-type) crimp terminals 29 can be used without completely removing the connection terminals 17 from the terminal block 4.
Can be attached, and the workability can be greatly improved.

Further, the terminal screw 18 of the connection terminal 17 held by the screw holding member 10 is pushed into the terminal block 4 side by using a tool (torque screwdriver).
Although the terminal screw 18 pushes and spreads the holding claw 15, the base of the holding claw 15 is made thin, so that the holding claw 15 can be pushed and spread more reliably.

[0037]

As described above, according to the terminal block structure of the present invention, on the manufacturer side, the terminal block structure can be connected without the terminal screws being screwed into the screw holes of the terminal block portion. Since the terminal is shipped while being held by the screw holding member, the manufacturing side can reduce the man-hour for screw tightening and can reduce the manufacturing cost even in a terminal block structure having a large number of connection terminals. .

On the user's side, the terminal screw of the connection terminal held by the screw holding member is set with a tool (torque) by fitting the crimp terminal of the terminal of the lead wire along the bases of the plurality of terminal blocks. Using a screwdriver), push the terminal screw into the terminal block, screw the terminal screw into the screw hole, attach the connection terminal to the terminal block, and crimp the crimp terminal. Since only this is done, workability is improved.

Further, since the connection terminal is held by the screw holding member, there is no danger of the connection terminal being lost. Further, the connection terminal is not completely removed from the terminal base portion, and the connection terminal is round (O-shaped). ) Can be attached crimp terminal
The workability can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disassembled state in which a part of a terminal block portion in a terminal block structure according to the present invention is omitted.

FIG. 2 is a perspective view of a terminal block in the terminal block structure.

FIG. 3 is a cross-sectional view of the terminal block structure in the terminal block structure with a part thereof omitted;

FIG. 4 is a plan view of the terminal block structure in which a part of a screw holding member is omitted.

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a cross-sectional view of a state before screwing of a terminal screw held by a screw holding member.

FIG. 7 is a sectional view of the terminal screw in a screwed state.

FIG. 8 is a perspective view of a conventional terminal block structure.

FIG. 9 is a perspective view of a disassembled state of the terminal block portion in the terminal block structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Terminal block main body 4 Terminal block part 6 Base part 7 Screw hole 10 Screw holding member 10A Member main body 12 Screw mounting part 13 Hole part 14 Insertion part 15 Holding claw part 17 Connection terminal 18 Terminal screw 18A Head 19 Screw washer 1

Claims (5)

[Claims] 1. A terminal block body comprising a plurality of terminal block portions, a screw hole formed in a base portion provided on each of the terminal block portions, and a connection terminal rotatably mounted on a terminal screw with a screw washer. In a terminal block structure in which the connection terminal is screwed into the screw hole and attached to the terminal block during wiring, the terminal block main body is provided with a screw holding member; A terminal block structure, wherein a holding member holds the connection terminal detachably without screwing the terminal screw into the screw hole. 2. The screw holding member, which holds the connection terminal in a strip-shaped member main body, releases the holding of the terminal screw by pressing the terminal screw with a tool, and fixes the terminal screw with the screw. 2. The terminal block structure according to claim 1, wherein a screw mounting portion for moving to a hole side is provided. 3. The screw mounting portion includes: a hole having a diameter larger than a diameter of a head of the terminal screw; an insertion portion for inserting the terminal screw into the hole from outside the screw holding member; 3. The terminal block structure according to claim 2, comprising a holding claw portion formed at a peripheral portion at a predetermined interval in a circumferential direction and holding the terminal screw. 4. The terminal block structure according to claim 3, wherein a base of said holding claw portion is made thin. 5. The terminal block structure according to claim 1, wherein the screw holding member also serves as a cover.