JP2003151656A - Terminal block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems that: the number of parts and a variety of material are large; size reduction is difficult; assembly and disassembly are troublesome; it is impossible to temporary fix a cable 70 to enhance connection efficiency; and costs for manufacturing parts, assembly, and connection are high. SOLUTION: A terminal block comprises: terminal stands 11 erected on a printed circuit board; terminal screws 13 screwed into female screw parts of the terminal stands 11; slides 12 with washer to which the terminal screws 13 are mounted; and support means 14 supporting the slides 12 with washer. Each support means 14 further comprises: two guide members 14c, 14d guiding the slides 12 with washer in an insertion direction; and a holding member 14g disposed between the guide members 14c, 14d to hold the slide 12 with washer between the guide members 14c, 14d. When the slide 12 with washer is pressed between the guide members 14c, 14d and the holding member 14g, the holding member 14g is opened rearward by elasticity so that the support means 14 temporarily supports the slide 12 with washer at a predetermined height to hold the terminal screw 13 to be capable of being screwed into the female screw.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal block, and more particularly to a terminal block incorporated in, for example, an input / output terminal unit of a control device.

[0002]

2. Description of the Related Art FIG. 6 is a side sectional view schematically showing a conventional terminal block of this type, and 61 in the figure shows a terminal stand. The terminal stand 61 is formed by bending it into a substantially inverted U-shape when viewed from the side, using brass or the like having conductivity. A hole 61d is formed substantially in the center of the terminal stand upper portion 61a, and a female screw (not shown) is engraved in the hole 61d. The terminal screw 63 is screwed into the female screw. A leg portion 61e extends from the lower portion 61c of the terminal stand, and the terminal stand 61 is erected and mounted on a printed wiring board (not shown) or the like via the leg portion 61e. Slider with washer 62 in the terminal stand 61
The washer-equipped slide lower portion 62c is disposed, and the washer-equipped slide 62 is formed by bending a brass plate or the like into a substantially U shape in a side view. A terminal screw 63 is rotatably attached to the approximate center of the washer-side slide upper portion 62a. A compression coil spring 64 formed of spring steel or the like is interposed between the washer-side slide lower portion 62c and the terminal stand lower portion 61c, and the coil-spring 64 always urges the washer-side slide 62 upward. It is like this. Around the terminal stand 61, the washer-equipped slide 62, and the like, a housing 65 partitioned by a synthetic resin into a large number of rectangular cylinders is disposed.
2, an opening portion 65b is formed at a predetermined position opposite to 2, and the ring-shaped crimp terminal-equipped cable 7 is passed through the opening portion 65b.
The ring terminal 71 of 0 can come in and out. A guide groove 65c is vertically formed at a predetermined position of the corner portion of the housing 65, and a stopper 65d is formed at the top of the guide groove 65c. On the other hand, a guide piece 62d is formed at a corner portion of the washer-side slide upper portion 62, and the guide piece 62d is inserted into the guide groove 65c. These terminal stands 6
1, a washer-equipped slide 62, a terminal screw 63, a compression coil spring 64, a casing 65, and the like constitute a terminal block 60.

When assembling the terminal block 60 constructed as described above, the washer-equipped slide 6 to which the terminal screw 63 is mounted is mounted.
After inserting the second lower portion 62c into the terminal stand 61, the coil spring 64 is interposed between the washer-side slide lower portion 62c and the terminal stand lower portion 61c. Terminal stand front wall 6
These are inserted in the lower part of the housing 65 with 1b facing forward. The guide piece 62d is the stopper 65d of the guide groove 65c.
The terminal block 60 is assembled by abutting against. The terminal screw 63 is supported at a predetermined height by the biasing force of the coil spring 64 via the washer-equipped slide 62, and the ring terminal 71 of the cable 70 with a ring-shaped crimp terminal is mounted between the lower portion of the terminal screw 63 and the terminal stand upper portion 61a. Space to insert is secured (this state is called self-up). Although not shown, after mounting a plurality of terminal blocks 60 at predetermined positions on the printed wiring board via the leg portions 61e, by mounting a case covering them except the opening portion 65b on the printed wiring board, The device is manufactured.

When connecting the cable 70 with a ring-type crimp terminal to the terminal block 60 thus constructed, an opening 65 is formed.
The cable 70 with a ring-type crimp terminal is inserted from b, the center of the ring terminal 71 is aligned with the center of the hole 61d, and then the terminal screw 63 is pushed down using a cross screwdriver (not shown) or the like. Then, the washer-equipped slide 62 descends against the biasing force of the coil spring 64, and the tip of the terminal screw 63 is inserted into the ring terminal 71. Next, when the terminal screw 63 is rotated clockwise, the terminal screw 63 is screwed into the female screw of the hole 61d, and the lower surface of the slide upper portion 62a with a washer and the upper portion of the terminal stand 61a.
The ring terminal 71 is sandwiched by the upper surface and is mechanically connected to the ring terminal 71, and is electrically connected to the circuit of the printed wiring board.

When the terminal block 60 thus constructed is disassembled, when the housing 65 is pulled up, the washer-equipped slide 62 and the coil spring 64 are separated from the terminal stand 61 and scattered.

[0006]

In the above-described terminal block 60, since the housing 65 is provided, the occupied area tends to be large, and it is difficult to reduce the size. In addition, the number of parts such as the housing 65 and the coil spring 64 and the types of materials forming them are large, and the manufacturing cost is high and the manufacturing is easy. In addition, it is difficult to stably store the coil spring 64 and the washer-equipped slide 61 in the terminal stand 61 until they are inserted into the housing 65.
Assembly and disassembly is troublesome. In addition, the cable 70 is provided with an opening
It is necessary to rotate the terminal screw 63 by using a screwdriver or the like each time it is inserted into the cable 5b and connect / fix it. Therefore, it is possible to temporarily connect a plurality of cables 70 and simultaneously connect / fix them. It was difficult and the work efficiency was poor.

The present invention has been made in view of the above problems. The number of parts and the types of materials can be reduced, the size can be reduced, and the assembling and disassembling can be facilitated, and the cable can be temporarily fixed. It is an object of the present invention to provide a terminal block which enables the connection efficiency to be improved and, as a result, the cost for manufacturing, assembling and connecting the parts to be reduced.

[0008]

Means for Solving the Problems and Effects Thereof In order to achieve the above object, a terminal block (1) according to the present invention comprises a terminal stand erected on a substrate and a female screw portion of the terminal stand. A terminal screw, a slide with a washer to which the terminal screw is attached, and a supporting means for supporting the slide with a washer, wherein the supporting means includes the slide with a washer in an insertion direction. The washer is composed of at least two guide members for guiding and a holding member which is arranged between the guide members and holds the slide with washer between the guide members, and the washer is provided between the guide member and the holding member. When the attached slide is pushed in, the holding member is elastically opened rearward so that the supporting means temporarily supports the washer-attached slide at a predetermined height, and the terminal screw is held so as to be screwed into the female screw. It is characterized that it is so is. According to the terminal block (1) described above, an elastic member is used for the supporting means, and the at least two guide members and the holding member are integrally formed, thereby reliably supporting the washer-equipped slide. It is possible to reduce the size and facilitate the assembling / disassembling, and as a result, it is possible to significantly reduce the cost for manufacturing and assembling the parts.

Further, in the terminal block (2) according to the present invention, in the terminal block (1), the slide with washer is held by the tapered surface formed on the holding member and the slide with washer. It is characterized in that it is formed by an engagement hole that engages with the tapered surface. According to the terminal block (2) described above, when the tapered surface is inserted into the engagement hole, the terminal screw can be self-up through the washer-equipped slide, while the terminal screw is rotated while being pushed down. With this, the slide with washer descends along the tapered surface, and the terminal screw can be securely screwed into the terminal stand. Also, the length of the terminal screw,
Alternatively, by adjusting the height of the tapered surface, when the terminal screw is pushed down, the terminal screw passes through the ring terminal of the cable and is positioned on the terminal stand, and the cable is automatically temporarily fixed. You can After that, a large number of the cables can be easily connected to a large number of the terminal stands in one step, and the connection cost can be reduced.

Further, the terminal block (3) according to the present invention is provided with a terminal stand which is erected on the substrate, a terminal screw which is screwed into an internal thread portion of the terminal stand, and a washer to which the terminal screw is attached. A terminal block comprising a slide and a support means for supporting the slide with washer, wherein the support means is composed of at least two support members having a predetermined distance and a support piece formed on the top thereof. On the other hand, when the slide with washer is formed in a cam shape and the slide with washer is pushed between the supporting means, the supporting members are elastically opened in the lateral direction, and the supporting means moves the slide with washer to a predetermined position. It is characterized in that it is temporarily supported at a height, and the terminal screw is held so as to be screwed into the female screw. According to the terminal block (3) described above, an elastic member is used for the supporting means, and the at least two supporting members and the supporting piece are integrally formed, and thus the terminal block (1) is substantially the same as the terminal block (1). In addition to being able to obtain the effect of, the cam supports the slide with washer at a predetermined height,
The terminal screw can be surely self-upped.
Further, since the support members are opened laterally, the depth dimension can be made smaller than that of the terminal block (1).

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a terminal block according to the present invention will be described below with reference to the drawings. It should be noted that components having the same functions as those of the conventional example are designated by the same reference numerals. FIG. 1 is a perspective view schematically showing a terminal block according to the embodiment (1), and for the sake of easy understanding, only one terminal stand is shown. FIG. 2 shows the embodiment (1).
2A and 2B are schematic diagrams showing a self-up state of a terminal block (for one) according to the present invention, where (a) is a plan view and (b) is a sectional view taken along line BB in (a). FIG. 3 shows the embodiment (1).
It is a side sectional view showing a screwed state of a terminal block (for one) according to. The terminal stand 11 is formed by bending into a substantially Π shape in a side view using conductive copper or the like, and its surface is subjected to tin plating or the like to prevent the occurrence of corrosion. . A hole 11d in which a female screw (not shown) is formed is formed in the substantial center of the terminal stand upper portion 11a, and the terminal screw 13 is screwed into this female screw. Terminal stand front wall portion 11b and rear wall portion 11c
Leg portions 11e are extended from the respective terminals, and the terminal stand 11 is erected and mounted on a printed wiring board (not shown) or the like via the leg portions 11e.
A plurality of terminal stands 11 are installed side by side (Fig. 1).

A base 14a is provided on the rear side of each terminal stand 11.
And the base 14a is attached to the rear wall 11c of the terminal stand using the adhesive 14b or the like, or is attached to the printed wiring board. Base 1
A plurality of sets of two guide members 14c and 14d each having a predetermined length are erected at a predetermined position on 4a, and guide grooves 14e and 14f are provided in each guide member 14c and 14d.
Are formed in the vertical direction. Each guide member 14c, 1
A holding member 14g is erected between 4d,
A tapered surface 14h is formed at a predetermined position on the front surface of the holding member 14g. These bases 14a, guide members 14c,
The supporting means 14 is configured to include 14d, the holding member 14g, the tapered surface 14h, and the like. The supporting means 14 is integrally formed of an elastic synthetic resin material such as POM (polyoxymethylene) and has a holding member 14g.
Is elastic so that it can bend backwards.

A slide 1 with a washer is mounted on the terminal stand 11.
2 is provided, and the washer-equipped slide 12 is formed by bending it into a hook shape in a side view using brass or the like. A terminal screw 13 is rotatably mounted on the slide upper part 12a with washer substantially at the center thereof. The slide rear wall portion 12b is a guide member 14
It is inserted between c and 14d and the holding member 14g,
Due to the elasticity of the holding member 14g, the holding member 14g is constantly pressed against the guide members 14c and 14d via the tapered surface 14h, and is vertically slidable along the guide grooves 14e and 14f. An engagement hole 12c is formed at a predetermined position of the slide rear wall portion 12b, and the tapered surface 14h is formed in the engagement hole 12c.
Is engaged with the terminal screw 1 through the slide 12 with washer.
3 is held at a predetermined height. These terminal stand 11, slide with washer 12, terminal screw 13,
The terminal block 10 according to the embodiment (1) is configured to include the supporting means 14 and the like.

Although not shown, after mounting the terminal block 10 at a predetermined position on the printed wiring board through the leg portions 11e, the case which covers the terminal stand upper portion 11a front side and the terminal screw 13 upper side is covered with the printed wiring board. When mounted on top, the terminal device is manufactured.

When connecting the ring terminal 71 of the cable 70 with the ring crimp terminal to the terminal block 10 thus constructed, first, the slide rear wall portion 12b with a washer is connected to the guide member 1.
It is pushed between 4c and 14d and the holding member 14g. When the tapered surface 14h is engaged with the engagement hole 12c, the washer-equipped slide 12 is temporarily supported, and a predetermined space having a height H is secured between the terminal screw 13 and the terminal stand upper portion 11a (FIG. 2). Ring terminal 7 of cable 70 in this space
1 is inserted, the center of the ring terminal 71 is aligned with the center of the hole 11d, and then the terminal screw 13 is pushed down using a cross screwdriver (not shown) or the like. Then, the holding member 14g bends backward, the washer-equipped slide 12 descends, and the tip of the terminal screw 13 is inserted into the ring terminal 71. Next, the terminal screw 13
Is rotated clockwise, the terminal screw 13 is attached to the female screw of the hole 11d.
As they are screwed together, the ring terminal 71 is sandwiched by the lower surface of the washer-side slide upper portion 12a and the upper surface of the terminal stand upper portion 11a to be mechanically connected and electrically connected to the circuit of the printed wiring board (Fig. 3).

When disassembling the terminal block 10 constructed as described above, the holding member 14g is pushed backward to bend the terminal screw 1
When 3 is released from the screw of the terminal stand 11a and then pulled up, the washer-equipped slide 12 is removed from the support means 14.

As is clear from the above description, in the terminal block 10 according to the embodiment (1), an elastic member such as POM is used for the supporting means 14, and two guide members 14c and 14d and a holding member 14g are provided. By integrally forming, the slide 12 with a washer can be reliably supported, downsizing can be achieved, and the assembling / disassembling can be facilitated. As a result, the parts manufacturing / assembling cost can be reduced. Can be significantly reduced.

Further, when the tapered surface 14h is inserted into the engagement hole 12c, the terminal screw 13 can be self-upped through the washer-equipped slide 12, while the terminal screw 13 is pushed down and rotated to rotate the washer-equipped slide 12. Is lowered along the tapered surface 14h, and the terminal screw 13 can be securely screwed into the terminal stand upper portion 11a.

In the terminal block 10 according to the embodiment (1), both the guide members 14c and 14d are two and the holding member 14g is one, but the number of them is not limited to this. However, in another embodiment, the number of guide members may be three or more, and the number of holding members may be two or more.

FIG. 4 shows a terminal block (1) according to the embodiment (2).
FIG. 3 is a side cross-sectional view schematically showing the individual parts), where the solid line shows the self-up state and the alternate long and short dash line shows the temporarily fixed state. The length of the terminal screw 23 is set so that the lower portion of the terminal screw 23 contacts the terminal stand upper portion 11a when the engagement hole 12c formed in the washer-equipped slide 12 is disengaged from the tapered surface 14h. Since other configurations are substantially the same as those shown in FIGS. 1 to 3, detailed description of the configurations will be omitted here. The terminal stand 20 according to the embodiment (2) is configured by including the terminal stand 11, the washer-equipped slide 12, the supporting means 14, the terminal screw 23 and the like.

In the terminal block 20 constructed as described above, the length of the terminal screw 23 is adjusted. When the ring terminal 71 is set on the terminal stand 11, the terminal screw 23 is pushed down and the engaging hole is formed. When 12c is disengaged from the tapered surface 14h, the terminal screw 23 passes through the ring terminal 71 and is positioned on the terminal stand 21, so that the cable 70 can be automatically temporarily fixed. After this, a large number of cables 70
Can be easily connected to a large number of terminal stands 11, and the connection cost can be reduced.

In the embodiment (2), the terminal screw 23
However, the height of the tapered surface 14h may be adjusted in another embodiment, and substantially the same effect as that of the embodiment (2) can be obtained.

FIG. 5 shows a terminal block (1) according to the embodiment (3).
FIG. 1 is a perspective view schematically showing a main part of the
Reference numeral 1 denotes a terminal stand which is substantially the same as that shown in FIGS. A base 34a is disposed behind the terminal stand 11, and two support members 34c and 34d are provided upright at predetermined positions on the base 34a. Support members 34c, 3
Support pieces 34e and 34f are formed on 4d, and
A guide groove 34g is formed in each of 4e and 34f so as to face each other. These bases 34a, support members 34c, 3
4d, supporting pieces 34e, 34f, etc., to constitute the supporting means 34, and the supporting means 34 is integrally formed using an elastic member such as POM. And the support member 34
C and 34d are always urged in the lateral direction (arrow C in the figure) by elasticity, and can be opened in the opposite direction.

A slide 3 with a washer is mounted on the terminal stand 11.
2 is disposed, and the washer-equipped slide 32 is formed into a hook shape in a side view by using a brass plate or the like. A terminal screw 13 is rotatably attached to the center of the slide upper portion 32a with washer. The slide rear wall portion 32b is formed in a substantially rhombic shape, and thereby the cam 32c is configured. The rear wall portion 32b of the slide is the guide groove 3 of the supporting means 34.
4g, and the elasticity of the support means 34 and the cam 3
While the slide 32 with washer is held at a predetermined height by means of 2c, it can be slid up and down when a force is applied to the terminal screw 13. Since other configurations are substantially the same as those shown in FIGS. 1 to 3, detailed description of the configurations will be omitted here. The terminal stand 30 according to the embodiment (3) is configured to include the terminal stand 11, the washer-equipped slide 32, the terminal screw 13, the supporting means 34, and the like.

In the terminal block 30 thus constructed, an elastic member is used as the supporting means 34, and two supporting members 34c,
Since 34d and the support pieces 34e and 34f are integrally formed, substantially the same effect as the terminal block 10 shown in FIGS. 1 to 3 can be obtained, and the slide 32 with a washer is predetermined by the cam 32c. The terminal screw 13 can be surely self-upped by being supported at the height of. In addition, the support member 34
Since c and 34d open laterally, the depth dimension can be made smaller than that of the terminal block 10,
It can be miniaturized.

In the terminal blocks 10, 20 and 30 according to the embodiments (1) to (3), the supporting means 14 and 34 are used.
Although the case where a synthetic resin material such as POM is used has been described above, the supporting means 14 and 34 are not limited to POM at all, and an elastic member having an insulating property may be used, for example, a metal material coated with an insulating film. It may be one that has been made.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an embodiment (1) of a terminal block according to the present invention, and for the sake of clarity, only one terminal stand is shown.

2A and 2B are schematic diagrams showing a self-up state of a terminal block (one unit) according to the embodiment (1), where (a) is a plan view and (b) is a line BB in (a). A cross-sectional view is shown.

FIG. 3 is a side cross-sectional view showing a screwed state of the terminal block (one piece) according to the embodiment (1).

FIG. 4 is a side sectional view schematically showing a terminal block (one unit) according to the embodiment (2), in which a solid line shows a self-up state and a chain line shows a temporarily fixed state.

FIG. 5 is a perspective view schematically showing a main part of a terminal block (for one) according to the embodiment (3).

FIG. 6 is a side sectional view schematically showing a conventional terminal block.

[Explanation of symbols]

10 terminal block 11 terminal stand 11d hole 12 slide with washer 13 terminal screws 14 Supporting means 14c, 14d guide member 14g holding member

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 5E077 BB02 BB11 BB26 BB31 CC22                       DD01 DD13 JJ20 JJ21                 5E086 CC13 CC26 DD06 DD09 DD12                       DD42 LL02 LL12 LL14 LL16                       LL17

Claims (3)

[Claims] 1. A terminal stand erected on a substrate, a terminal screw screwed into an internal thread portion of the terminal stand, a slide with a washer to which the terminal screw is attached, and a slide with the washer are supported. A terminal block comprising a support means, wherein the support means is arranged between at least two guide members for guiding the slide with washer and the guide member, and between the guide members. A holding member for holding the slide with washer, and when the slide with washer is pushed between the guide member and the holding member, the holding member is elastically opened rearward so that the supporting means slides with the washer. Is temporarily supported at a predetermined height, and the terminal screw is held so as to be screwed into the female screw. 2. The holding slide of the washer is held by a tapered surface formed on the holding member and an engagement hole that engages with the tapered surface formed on the washer slide. The terminal block according to claim 1. 3. A terminal stand erected on a substrate, a terminal screw screwed into an internal thread portion of the terminal stand, a slide with a washer to which the terminal screw is attached, and a slide with the washer are supported. A terminal block having a support means, wherein the support means is composed of at least two support members having a predetermined spacing and a support piece formed on the tops of the support members, and the slide with washer is a cam. When the slide with washer is formed into a shape and is pushed between the support means, the support members are elastically opened laterally, and the support means temporarily supports the slide with washer at a predetermined height, and the terminal screw Is adapted to be retained by the female screw so that it can be screwed.