JPH09330643A - Fuse-incorporative terminal board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize an electronic apparatus and facilitate the replacement of fuses by dividing the desired number of terminals into head section terminals and leg section terminals, and arranging the fuses between both divided terminals. SOLUTION: A holder 10 fitted with a lead terminal 11 is inserted from below a connection section void section, and the fixed window 22 on the side face of the holder 10 is fitted and fixed to a fixed lug. A holder terminal 8 fits a clip 17 and a spring 18 into a fuse clip section. A tubular fuse 1 for an electronic apparatus is inserted into the fuse clip section and is held by the clip 17. A terminal screw 14 is temporarily fitted to a female screw section 15 at the upper section of the holder terminal 8. The holder terminal 8 is inserted into the connection section void section, and a positioning step section 16 is arranged at the position where it is matched with a positioning lug.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block which can be used in electronic control equipment such as a control panel and has a built-in fuse, and was developed mainly for one-piece type terminal blocks and two-piece type terminal blocks.

[0002]

2. Description of the Related Art Electronic control equipment such as a control panel is provided with terminal blocks for various inputs and outputs. In recent terminal blocks, the demand for multi-functional elements has increased, and terminal uses with surge absorbers, terminal blocks with relays, terminal blocks with disconnectors, terminal blocks with fuses, etc. Separately, subdivision has progressed.

[0003] The present invention relates to an improvement of a terminal block with a fuse. As shown in the plan view of FIG. 5, the terminal block with a fuse has several desired terminals in the terminal block 3,
The fuse 1 is to be connected. The fuse 1 is arranged by the fuse holder 2 and a fuse clip (not shown) separately from the terminal block 3 on the side of the normal terminal block 3 (upper side in FIG. 8). Is the current situation. In the example shown in FIG. 5, two fuses 1 are arranged on a row of terminal blocks 3.

[0004]

This requires a space for arranging the fuse 1 separately from the space for arranging the terminal block 3, which is against the demand for downsizing electronic control devices such as a control panel. In addition, this space has become an obstacle in the use of many connecting block terminal blocks. Therefore, the present invention eliminates the space for arranging the fuse 1 outside the terminal block 3 by integrating the connection part of the terminal block 3 and the fuse holder 2, and embeds the fuse in the terminal block base to realize a miniaturized control. An object of the present invention is to provide a terminal block in which a fuse can be built, which makes it possible to manufacture electronic control devices such as boards.

Further, if the fuse 1 is embedded in the terminal block 3, it becomes difficult to replace the fuse 1 which needs to be replaced for its intended purpose. The fuse 1 which needs to be replaced can be easily replaced from the head terminal side such as a terminal screw, so that the above problem can be solved more completely.

[0006]

Means for Solving the Problems The present invention is, as means for solving the above-mentioned problems, firstly, in a terminal block in which a terminal is embedded as a connecting part in an empty space for a connecting part of a terminal block base, A terminal block in which a fuse can be built-in, characterized in that a desired number of terminals are divided into a head terminal and a leg terminal, and a fuse is arranged between the head terminal and the leg terminal (claim 1). Further, a two-piece type terminal block using this means is claimed.
It is.

Secondly, in the empty space for the connecting portion of the terminal block base,
In a terminal block with embedded terminals as connecting parts, divide the desired number of terminals into head terminals and leg terminals, and make the head terminals from a conductive material with a fuse clip part where a fuse can be attached and detached. The leg terminal side is composed of a holder whose inside is a fuse receiver and a lead terminal which is projected to the outside from the contact part of the fuse of the holder. A terminal block capable of containing a fuse is provided (claim 3). Further, the present invention is applied to a two-piece type terminal block using this means.

Thirdly, the detachable holder terminal is sized so as to have a clearance between the detachable holder terminal and the empty space for the connecting portion of the terminal block base or the upper terminal block, and the detachable key is detachably inserted into the clearance from above. The present invention provides a terminal block in which a fuse can be built in, characterized in that the holder terminal is fixed to the empty space for the connecting portion (Claim 5).

Fourthly, there is provided a disconnection confirmation terminal which is in contact with the holder terminal and projects below the terminal block base or below the lower terminal block, and the terminal block capable of incorporating a fuse according to claim 3 to claim 5. Is provided (claim 6).

[0010]

Embodiments of the present invention will be described below with reference to the drawings. Examples of the present invention include a one-piece type terminal block and a two-piece type terminal block. Figure 1,
2, 5 and 7 show the first embodiment of the one-piece type terminal block, and FIGS. 3, 4 and 6 show the second embodiment of the two-piece type terminal block. . However, the two-piece type terminal block has the same configuration as the one-piece type terminal block if only the upper terminal block is observed.

First, the first embodiment of the one-piece type terminal block will be described. FIG. 1 is a cross-sectional view of a one-piece type terminal block capable of incorporating a fuse according to the present invention. In the present invention, a special terminal with a fuse is embedded as a connecting part 6 in a vacant part 5 for a connecting part of a terminal block base 4. It is a terminal block.

The details of the terminal base 4 are shown in the sectional view of FIG. The terminal block base 4 is made of an insulating material such as a plastic resin, and the connecting portion vacant portions 5 are formed according to the number of terminals. In FIG. 4, only the empty space 5 for the connecting portion in the upper stage of the two-stage terminal block is shown, but it goes without saying that it also exists in the lower stage. A holder terminal positioning protrusion 12 is formed on the upper inner side of the connecting portion empty portion 5, and a holder fixing protrusion 13 is formed on the lower inner side.

The connecting portion 6 mounted on the connecting portion empty portion 5 is
As shown in the side view of FIG. 2, the terminal is divided into a head terminal 61 and a leg terminal 62, and the tubular fuse 1 for electronic equipment is arranged between the head terminal 61 and the leg terminal 62. Yes, the details are shown in the exploded perspective view of the connecting portion 6 in FIG.

The head terminal 61 is made of a conductive material (for example, brass) as the holder terminal 8, and has a fuse clip portion 7 for attaching and detaching the electronic device tubular fuse 1 attached and detached to the lower inside thereof. There is. On the other hand, an upper portion of the holder terminal 8 is formed with a female screw portion 15 for mounting the terminal screw 14 penetrating to the fuse clip portion 7. Fuse clip portion 7 and female screw portion 15
Appears in FIG. Incidentally, reference numeral 16 in FIG. 3 denotes a positioning step portion in the connection portion empty portion 5 of the holder terminal 8 and corresponds to the positioning protrusion 12.

As shown in FIG. 3, the fuse clip portion 7 is provided with a bias for ensuring the reliability of the connection between the clip 17 for holding the electronic device tubular fuse 1 and the electronic device tubular fuse 1. Equipped with a spring 18 for giving. As shown in FIG. 1, a clip 17 is provided in the fuse clip portion 7 with a certain clearance, and the head of the clip 17 is attached to the terminal screw 14 within the range.
When the male screw portion 19 is pressed, the electronic device cylindrical fuse 1 can be clamped by the fuse clip portion 7.

As shown in FIG. 1, the size of the holder terminal 8 is such that it has a clearance between it and the empty space 5 for the connecting portion of the terminal block base 4, and the detachable key 20 can be detachably attached to the clearance. The holder terminal 8 is fixed to the connection portion empty portion 5 of the terminal base 4 by inserting the holder terminal 8 from above (the same direction as the operation direction of the terminal screw 14).

The leg terminal 62 of the connecting portion 6 is composed of a holder 10 whose inside is a fuse receiver 9 and a lead terminal 11 which is projected to the outside from a fuse contact portion of the holder 10. The holder 10 is formed of the same insulating material as the terminal block base 4, and constitutes a part of the terminal block base 4 after being incorporated into the terminal block base 4.

A fixing window 22 for fixing the holder 10 to the terminal base 4 is formed on the side plate of the holder 10. The inner fuse receiver 9 of the holder 10 and the fuse clip portion 7 of the holder terminal 8 described above.
And serve as a fuse holder.

The connection portion 6 is provided with a disconnection confirmation terminal 21 which is in contact with the holder terminal 8 and projects downward to the position of the terminal block base 4. The groove 23 in the drawing formed on the side surface of the holder 10 is a mounting groove for the disconnection confirmation terminal 21. Since the disconnection confirmation terminal 21 is in direct contact with the head terminal 61, when the fuse 1 is disconnected, it can be detected.

Hereinafter, the assembling of the terminal block base 4 of the connecting portion 6 into the empty space 5 for connecting portion will be described. First, the leg terminal 62 is provided inside the holder 10 by the lead terminal 11
1 is inserted into the through hole 24 in FIG. 1 so that the lower end portion thereof projects out of the holder 10. The lead terminal 11
The holder 10 in which the is mounted is inserted from below the empty space 5 for the connecting portion, and the fixing window 22 on the side surface of the holder 10 is inserted into the fixing protrusion 13.
Attach and fix so that it fits snugly.

On the other hand, in the holder terminal 8, a clip 17 and a spring 18 are attached to the inside of the fuse clip portion 7 at the lower inner side, and then the electronic device tubular fuse 1 is inserted into the fuse clip portion 7 to make the clip 17
Holds the electronic device tubular fuse 1. Further, the terminal screw 14 is attached to the female screw portion 15 on the upper part of the holder terminal 8.
Temporarily attach.

The holder terminal 8 equipped with the electronic-device tubular fuse 1 is inserted into the empty space 5 for the connecting portion, and the positioning step portion 16 is aligned with the positioning protrusion 12. As a result, the holder terminal 8 is positioned at a predetermined position, and the other end of the electronic device tubular fuse 1 is positioned inside the fuse receiver 9 of the holder 10. After that, insert the detachable key 20 into the clearance between the holder terminal 8 and the connection empty portion 5,
Fix the holder terminal 8.

In this state, the electronic device tubular fuse 1 is connected to the clip 17 and the head of the lead terminal 11 and is pressed and held by the spring 18.
When the terminal screw 14 is further tightened, the male screw portion 19 of the terminal screw 14 presses the head portion of the clip 17 to clamp the electronic device tubular fuse 1. Of course, the clamped tubular fuse 1 for an electronic device can be replaced at any time by pulling out the attach / detach key 20 and pulling out the holder terminal 8. At this time, the detachable key 20
The operation can be performed from the same direction as the attachment / detachment of the terminal screw 14.

Next, a second embodiment relating to the two-piece type terminal block 32 will be described. As shown in the exploded view of FIG. 4, the two-piece type terminal block 32 has an upper terminal block 33 and a lower terminal block 34 which are detachably separated, and if only the upper terminal block 33 is taken, it is a one-piece type terminal block structure. Above all, there is no big difference.

However, in the second embodiment, the lower terminal block 34 is contacted with the male part and the upper terminal block 33 is contacted with the female part with the contact part. Therefore, there is a slight difference in the shape of the lower end part of the leg terminal 11. Get out. That is, the terminal 35 for the lower terminal block
As shown in FIGS. 3 and 4, since both the upper contact piece 36 and the lower lead terminal 37 are formed in a male shape, the lower end of each terminal of the upper terminal block 33 is connected to the female contact portion 3.
It is supposed to be 8. Therefore, the lead terminal 11 does not protrude from the bottom surface of the upper terminal block 33. The relationship between the terminal used in the two-piece type terminal block 32 and the fuse 1 is as shown in FIG.

Further, in the second embodiment, the holder 39 is also formed by the same edge as the terminal base 4, but a slightly different one is used. That is, the holder 10 in the first embodiment constitutes a part of the terminal block base 4 after being incorporated into the terminal block base 4, but the holder 39 in the second embodiment is inside the terminal block base 4. It is attached to.

Although the embodiment of the present invention has been described as a screw type terminal block, the present invention is not limited to this, and it goes without saying that a tab type terminal block or a cage clamp type terminal block may be used. .

[0028]

According to the present invention, firstly, the terminals of the upper terminal blocks of the one-piece type terminal block and the two-piece type terminal block are divided into a head terminal 61 and a leg terminal 62, and between the head terminal and the leg terminal. Since the fuse 1 is arranged on the terminal block base 4, the space for arranging the fuse separately from the terminal block is not required, and it is possible to supply the terminal block with a fuse that enables the production of a compact electronic control device. Further, in order to secure a fuse space in the terminal base 4, it is possible to install an arbitrary number at a desired location,
The terminal block with a fuse has high versatility (claims 1 and 2).

Secondly, the head terminal 61 is the holder terminal 8 made of a conductive material in which the fuse clip portion 7 capable of detachably holding the fuse 1 is formed, and the leg terminal terminal 62 side, the inside is the fuse receiver 9 The holder 10 and the lead terminal 11 projecting outward from the fuse contact portion of the holder 10 hold the fuse 1 by the holder terminal 8 and the holder 10, so that only the fuse 1 can be replaced. (Claims 3 and 4).

Thirdly, according to a fifth aspect, the holder terminal 8 has a clearance between the holder terminal 8 and the empty space 5 for the connecting portion of the terminal base 4, and the detachable key 20 is detachably mounted on the clearance. By further inserting and fixing the holder terminal 8, the holder terminal 8 can be easily inserted and removed by operating the detachable key 20, and the replacement work of the fuse 1 can be facilitated. Also, since the detachable key 20 can be operated from above, the operability is special.

Fourthly, as in claim 6, by providing the disconnection confirmation terminal 21 which is in contact with the holder terminal 8 and projects below the terminal base 4, the disconnection of the fuse 1 can be easily identified. Became.

[Brief description of drawings]

[Figure 1] Cross-sectional view of a one-piece type terminal block with a built-in fuse

FIG. 2 is a side view showing the connecting portion.

FIG. 3 is a sectional view of a two-piece type terminal block in which a fuse can be incorporated.

FIG. 4 is a front explanatory view of a notch of the two-piece terminal block.

FIG. 5 is an exploded perspective view showing a connection portion of a one-piece type terminal block.

FIG. 6 is an exploded perspective view showing a connecting portion of a two-piece type terminal block.

FIG. 7 is a sectional view of the base of the one-piece type terminal block.

FIG. 8 is an explanatory plan view showing a fuse arrangement in a conventional control board terminal block portion.

[Explanation of symbols]

 1. . . . . Fuse 2. . . . . Fuse holder 3. . . . . Terminal block 4. . . . . Terminal block base 5. . . . . Space for connection 6. . . . . Connection part 7. . . . . Fuse clip section 8. . . . . Holder terminal 9. . . . . Fuse receiving 10, 39. Holder 11, 37. Lead terminal 12. . . . Positioning protrusion 13. . . . Fixed protrusion 14. . . . Terminal screw 15. . . . Internal thread 16. . . . Positioning step 17. . . . Clip 18. . . . Spring 19. . . . Male thread 20. . . . Detachable key 21. . . . Disconnection confirmation terminal 22. . . . Fixed window 23. . . . Mounting groove 24. . . . Through hole 32. . . . Two-piece terminal block 33. . . . Upper terminal block 34. . . . Lower terminal block 35. . . . Terminal for lower terminal block 36. . . . Contact piece 61. . . . Head terminal 62. . . . Leg terminal

Front page continued (72) Inventor Makoto Kawamura 1-1, Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (72) Inventor Yoshihisa Kato 3-74 Tamagawa, Chofu-shi, Tokyo Morimatsu (72) Inventor Yoshifumi Oshima 8 Morimatsu Co., Ltd., 8-share company, 3-74, Tamagawa, Chofu-shi, Tokyo

Claims (6)

[Claims] 1. A terminal block having a terminal as a connecting part in which a terminal is embedded in a space for a connecting part of a terminal block base, wherein a desired number of terminals are divided into a head terminal and a leg terminal, and the head terminal and the leg part. A terminal block with a built-in fuse characterized by arranging a fuse between terminals. 2. A terminal block comprising an upper terminal as a connecting portion and an upper terminal embedded in a space for a connecting portion of an upper terminal block base of a two-piece type terminal block, wherein a desired number of upper terminals are divided into a head terminal and a leg terminal. However, a terminal block with a built-in fuse is characterized in that a fuse is arranged between the head terminal and the leg terminal. 3. A fuse clip portion, into which a desired number of terminals to be embedded in a space for a connecting portion of a terminal block base is divided into a head terminal and a leg terminal, and the head terminal can be detachably held by a fuse. The holder terminal is made of a conductive material, and the leg terminal side is composed of a holder that has a fuse inside and a lead terminal that projects outside from the contact area of the fuse of the holder. A terminal block with a built-in fuse, which holds the fuse with a holder and a holder. 4. A desired number of terminals to be embedded in a space for a connecting portion of an upper terminal block base of a two-piece type terminal block is divided into a head terminal and a leg terminal, and the head terminal can be detachably held by a fuse. A detachable holder terminal made of a conductive material with a fuse clip part, and the leg terminal side is the contact part between the holder and the fuse of the holder where the inside is the fuse receiver and the contact part of the lower terminal block terminal. A terminal block with a built-in fuse, characterized in that the fuse is held by a holder terminal and a holder. 5. A detachable holder terminal is sized to have a clearance between it and a space for a connecting portion of a terminal base, and a detachable key is detachably inserted into the clearance from above to connect the holder terminal. The terminal block in which a fuse can be built in according to claim 3 or 4, wherein the terminal block is fixed to an empty space. 6. A terminal block capable of incorporating a fuse according to claim 3, further comprising a disconnection confirmation terminal which is in contact with the holder terminal and projects downward from the terminal block base.