JP2010108664A - Terminal block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem with a conventional terminal block that attachment/detachment operations of a wire terminals are complicated and the terminal block is made larger by instruction plates which display connecting destinations, etc. <P>SOLUTION: The terminal block 10 has at least two rows of terminal screw rows in parallel in which a plurality of terminal screws 12 connecting with the wire terminals are arranged in the longitudinal direction of an insulating base of a rectangular shape. In this case, the insulating base is provided with a locking member for putting the instruction plates 14 in locked states when the instruction plates 14 formed on the horizontal width on which top sections of respective terminal screws 12 of rows of the terminal screws on one side are exposed while the top sections of respective terminal screws 12 composing another side of the rows of terminal screws are covered are attached to be slidable between the rows of terminal screws and the instruction plates 14 are slid in one direction of the rows of terminal screws. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a terminal block, and more particularly to a terminal block in which a plurality of terminal screws connected to electric wire terminals are arranged in at least two rows in the long side direction of a rectangular insulating base.

As a terminal block connected to a plurality of electric wire terminals, for example, a terminal block proposed in Patent Document 1 below is known.
Such a terminal block is shown in FIG. In the terminal block 100 shown in FIG. 14A, a plurality of terminal screws 104, 104,... Are connected in two rows in the long side direction of the rectangular insulating base 102.
Since the connection destinations of the respective wire terminals connected to the plurality of terminal screws 104, 104,... Arranged in this way are important at the time of wiring and repair, the terminal block 100 has the structure shown in FIG. As shown in b), a name plate 106 for displaying the connection destinations of the terminal screws 104, 104,.
The name plate 106 is a rectangular plate-like body, and one end portion on the long side is inserted into a groove 110 formed in a partition portion 108 provided in an intermediate portion of the terminal screw row arranged in two rows. The other end side is bent.
For this reason, normally, as shown in FIG. 14B, the other end portion side of the name plate 106 is covered with a cover 112 attached to the insulating base 102 so as to cover one side of the terminal screw row. It has been bent.
On the other hand, when the cover 112 is removed from the insulating base 102, as shown in FIG. 14 (c), the name plate 106 is erected by its elastic force, and the heads of the terminal screws 104, 104,. Therefore, the attaching / detaching operation of the electric wire terminal can be easily performed by the driver.
Japanese Utility Model Publication No. 2-104573

According to the terminal block 100 shown in FIG. 14, it is possible to provide a name plate 106 that displays the connection destinations of the terminal screws 104, 104,..., And the name plate 106 obstructs the work when attaching and detaching the electric wire terminal. do not become.
However, in the terminal block 100 shown in FIG. 14, it is necessary to make the width of the partition part 108 provided in the center part so that the groove 110 into which the one end part on the long side of the name plate 106 is inserted can be formed. . For this reason, the insulating base 102 is enlarged and the terminal block 100 is enlarged.
Moreover, in the terminal block 100, in order to hold | maintain the state which bent the other end part side of the name plate 106, the cover 112 is required and the number of parts of the terminal block 100 increases. Furthermore, when attaching / detaching the electric wire terminal, the cover 112 needs to be attached / detached from the insulating base 102, and the electric wire terminal attaching / detaching operation becomes complicated.
Therefore, the present invention eliminates the problems of the conventional terminal block that makes the attaching and detaching work of the electric wire terminal complicated by attaching a name plate that displays the connection destination etc. An object of the present invention is to provide a terminal block that can be easily attached and detached and that can be miniaturized.

As a result of studying to achieve the above-mentioned object, the present inventors have found that the name plate provided on the head of the terminal screw so as to be slidable along the short side of the insulating base is disposed on one side in two rows. When the head of each terminal screw row of the terminal screw row is covered, the width of the terminal screw row of the other side terminal screw row is formed so as to be exposed, and the name plate slides on one side of the terminal screw row. When the name plate is in the locked state, it has been found that the insulation base can be miniaturized and the electric wire terminal can be easily attached and detached, and the present invention has been achieved.
That is, the present invention is a terminal block in which at least two rows of terminal screws arranged with a plurality of terminal screws connected to the wire terminals are provided in parallel in the long side direction of the rectangular insulating base. The insulating base has a width that exposes the head of each terminal screw of the other terminal screw row when the head of each terminal screw that constitutes one side of the terminal screw row is covered. The name plate is mounted so as to be slidable between the terminal screw rows, and when the name plate slides to one side of the terminal screw row, a lock member is provided to lock the name plate. It is in the terminal block characterized by being.

In such a terminal block according to the present invention, one end of the nameplate formed on each of the side plates on the short side of the insulating base is slidably inserted into one of the concave grooves shorter than the concave groove. When the name plate slides to one side of the terminal screw row on the inner wall surface of at least one of the concave grooves formed in the side plate through the slit-shaped through hole into which the end of the name plate can be inserted. By forming a convex portion that locks the name plate, the name plate slid to one side of the terminal screw row can be easily locked, and the name plate is placed in the direction of the other terminal screw row. By applying force, the name plate can be easily slid in the direction of the other terminal screw row.
In addition, a part of the inner wall surface is formed on an inclined surface so that the other side of the end portion of the name plate can be inserted from an oblique outer side of the insulating base into the through hole formed in one of the side plates. By inserting each of the end portions of the name plate into the groove of the plate and forming a stopper portion so that the name plate slidably mounted on the insulating base is not pulled out from the through hole, It is possible to effectively prevent the nameplate slidably mounted on the insulating base.
Furthermore, the end on one side of the name plate is pushed down by pushing down the end on one side of the name plate in which the end on the other side is inserted from the diagonally outer side of the insulating base into the through hole formed in one of the side plates. By forming the name plate with a plate material that can be bent in a curved shape so that the name plate can be inserted into the recessed groove formed on the other side plate, the name plate can be easily mounted on the insulating base.

Further, in the terminal block according to the present invention, a concave portion into which the end portion on the long side of the name plate is inserted into each end portion of the overhang portion formed on the both side plates on the long side of the insulating base at a predetermined interval. By forming, the slide width of the name plate can be reliably regulated.
In addition, as the insulating base, a connection type insulating base formed by sequentially combining a plurality of block portions can be suitably used.

According to the terminal block according to the present invention, the name plate on which the connection destinations of the terminal screws constituting the terminal screw row are slidably mounted on the insulating base, and the name plate is provided in at least two rows of the insulating base. When sliding so as to cover the heads of the terminal screws on one side of the terminal screw row, the heads of the terminal screws of the other terminal screw row are exposed.
Moreover, the name plate slid to one side of the terminal screw row is in a locked state, so that the electric wire terminal can be easily attached to and detached from each terminal screw on the other side of the terminal screw row.
In this way, the name plate is slidably mounted on the insulating base, so there is no need to provide a partition with a width that allows the name plate to be mounted between the two rows of terminal screws. The terminal block can be downsized.

An example of a terminal block according to the present invention is shown in FIG. The rectangular resin insulating base forming the terminal block 10 shown in FIG. 1 has a plurality of intermediate blocks between the resin left block 10a (L block 10a) and the right block 10c (R block 10c). 10b, 10b,... Is an articulated type insulating base integrated.
Such an insulating base is provided with two rows of terminal screw rows provided in parallel with a plurality of terminal screws 12, 12,. A partition wall having the same width as the partition wall partitioning the terminal screws 12, 12 constituting the terminal screw row is formed between the terminal screw rows.
Furthermore, overhanging portions 13, 13,... Are formed at predetermined intervals on the side surface in the long side direction of the insulating base.
On the name plate 14 slidably mounted on the terminal base, the connection destinations of the terminal screws 12, 12... Are displayed. When the name plate 14 is slid to one side of the terminal screw row as shown in FIG. 14 (a), the width of the heads of the terminal screws 12, 12,. Is formed.
For this reason, as shown in FIG. 1B, when the name plate 14 slides on the other terminal screw row, the heads of the terminal screws 12, 12,... Of the one terminal screw row are exposed.
In addition, a groove into which the tip of the driver is inserted is formed in each head of the terminal screws 12, 12,.

As shown in FIG. 2A, the terminal block 10 shown in FIG. 1 has openings 16, 16,... For inserting / removing electric wire terminals on the side surface on the long side.
Further, as shown in FIGS. 2A and 2B, the end portions of the name plate 14 are slidably inserted into the L block 10a and the R block 10c as side plates on the short side of the insulating base. Grooves 18 and 18 are formed. Of the concave grooves 18, 18, the concave groove 18 formed in the R block 10 c communicates with a slit-like through hole 20 that is shorter than the concave groove 18 and can be inserted with the name plate 14. . The through hole 20 is opened on the side surface of the R block 10c.
As shown in FIG. 3, the lower surface of the inner wall surface of the through hole 20 is formed as an inclined surface. As will be described later, the other side of the end portion of the name plate 14 is inclined with respect to the insulating base. Can be inserted from the outside. Further, the through hole 20 is prevented so that the name plate 14 having one end slidably inserted into the concave groove 18 of the R block 10c to which the through hole 20 is communicated is not extracted from the through hole 20. A stopper portion 22 is formed on the outlet side.
In this manner, the name plate 14 having the end portions inserted into the concave grooves 18 and 18 formed in the L block 10a and the R block 10c is arranged in two rows without being extracted from the through hole 20. Can slide to one side of terminal screw row.

Further, as shown in FIG. 4, the grooves 18 and 18 formed in the L block 10a and the R block 10c are formed so that the end portions of the grooves 18 and 18 are narrower than the center portion. Further, a convex portion 24a is formed at the central portion on the upper surface side of the inner wall surface of the concave groove 18, and convex portions 24b and 24b are formed on the lower surface side of the inner wall surface in the vicinity of both end portions of the concave groove 18 formed narrow. ing.
For this reason, when the name plate 14 slides to one side of the terminal screw row, the end portion of the name plate 14 slides toward the end portion formed in a narrow width of the concave groove 18, and enters the central portion of the concave groove 18. It is sandwiched between the formed convex portion 24a and the convex portion 24b formed on the end side of the concave groove 18 to be locked.
As described above, the name plate 14 in the locked state does not slide even when the insulating base is tilted. Therefore, the head of each terminal screw 12 of the exposed terminal screw row is rotated by a screwdriver. The attachment / detachment work from the opening 16 of the terminal can be easily performed.
The locked state of the name plate 14 can be easily released by applying a force to the name plate 14 in the direction of the other terminal screw row, and the name plate 14 is slid in the direction of the other terminal screw row, Similarly, it can be in a locked state.
In addition, convex part 24a, 24b, 24b may be formed only in the inner wall surface of the one side of the ditch | groove 18,18.

As shown in FIG. 3, the R block 10 c is formed with a through hole 20 communicating with the groove 18, and a lower surface of the inner wall surface of the through hole 20 is formed as an inclined surface.
Furthermore, the name plate 14 is formed of a plate that can be easily bent into a curved shape. For this reason, as shown in FIG. 5 (a), after inserting the other end of the name plate 14 from the diagonally outer side of the insulating base, one side of the name plate 14 is shown in FIG. 5 (b). The name plate 14 can be slidably mounted on the insulating base by pushing down the end on the side and bending it into a curved shape and inserting it into the groove 18 formed in the L block 10a.
Further, when removing the name plate 14 from the insulating base, the name plate 14 is bent in a curved shape with a screwdriver or the like so as to extract the end portion of the name plate 14 inserted into the groove 18 of the L block 10a. Thus, the name plate 14 can be easily detached from the insulating base.

Each of the intermediate blocks 10b, 10b,... Forming the insulating base shown in FIGS. 1 to 5 has overhangs 13 and 13 formed on both side surfaces thereof as shown in FIG. Concave portions 30, 30 into which the end portions on the long side of the name plate 14 are inserted are formed at the tip portions of the overhang portions 13, 13. The recessed widths 30 and 30 can also regulate the slide width of the name plate 14.
A pair of terminal screws 12, 12 are attached to the intermediate block 10 b, and a box 26 is screwed to each of the terminal screws 12, 12. A plate-shaped energization plate 28 fixed to the casing of the intermediate block 10b is inserted into the boxes 26, 26.
As shown in FIGS. 9A and 9B, the boxes 26 and 26 are screwed into the screw portion 12 b of the terminal screw 12, so that the boxes 26 and 26 are moved up and down by rotating the head portion 12 a of the terminal screw 12. Then, the electric wire terminal inserted from the opening 16 can be gripped between the energizing plate 28 and the inner wall surface of the box 26.

A front view of the box 26 is shown in FIG. 8 (a), and a left side view thereof is shown in FIG. 8 (b). Further, a top view of the box 26 is shown in FIG. 8C, and a cross-sectional view taken along plane AA of FIG. 8C is shown in FIG.
As shown in FIG. 8B, the box 26 is formed by bending a metal strip into a square shape, and plate-like portions 26a and 26b are laminated in two layers on the upper side. As shown in FIG. 8D, a cylindrical portion 26c having a spiral formed therein is formed at the center of the laminated lower layer side plate-like portion 26a. A part of the plate-like portion 26 a on which the cylindrical portion 26 c is formed is placed on the tip surface of the plate-like portion that bends the metal strip to form the side surface of the box 26. Further, the laminated plate-like portion 26a on the upper layer side is formed in an Ω shape so that the side surface of the tubular portion 26c can be wrapped as much as possible, as shown in FIG. For this reason, when the electric wire terminal is gripped between the energizing plate 28 and the inner wall surface of the box 26 by the terminal screw 12, the stress applied to the tubular body 26c can be received by the entire box 26, and one of the boxes 26 can be received. It is possible to prevent a situation where stress concentrates on the part and deforms.

FIG. 9A shows a front view of the intermediate block 10b to which the pair of terminal screws 12 and 12 and the boxes 26 and 26 are attached, and FIG. 9B shows a top view thereof. Further, a right side view of the intermediate block 10b is shown in FIG. 9C, and a rear view thereof is shown in FIG. 9D. FIG. 10 is a cross-sectional view taken along the plane BB shown in FIG.
Projections 36, 36, 36 are formed in the vertical direction on the central partition 38 formed at the central portion on the one surface side of the intermediate block 10 b. Recesses 32 and 32 into which the terminal screw 12 and the box 26 are inserted are formed across the central partition portion 38, and the middle of the energization plate 28 is inserted in the middle of the central partition portion 38. A groove 34 for positioning is formed.
As shown in FIG. 9 (b), an upper partition portion 42 in which a notch portion 40 into which the screw portion 12 b of the terminal screw 12 is inserted is formed, as shown in FIG. The head 12a is placed.
Further, the ridges 43 and 43 are provided above the upper partition portion 42, and the head 12 a of the terminal screw 12 is sandwiched between the upper partition portion 42 and the ridges 43 and 43, so that the terminal screw 12 can be prevented from falling.
In addition, protrusions 44a, 44b, and 44c are also formed at the lower end of the intermediate block 10b that forms the bottom surfaces of the recesses 32 and 32, respectively. Of these protrusions 44a, 44b, 44c, the protrusion 44c formed at the center is shorter than the protrusions 44a, 44b formed on the outer peripheral side of the intermediate block 10b.
Of the protrusions 44a and 44b, the protrusion 44a and the protrusion 44b, and the protrusion 44b and the protrusion 44c are connected and reinforced by the connecting portion 45.
A notch 16a that forms the opening 16 is formed on the side surface of the intermediate block 10b.

On the other surface side of the intermediate block 10b, as shown in FIG. 9D, projecting plates 46, 46 project at substantially the same height as the upper partition 42. The tips of the projecting plates 46, 46 are curved so as to be concave on the other surface side of the intermediate block 10b.
Further, as shown in FIGS. 9D and 10, recesses 48, 48, 48 into which the protrusions 36, 36, 36 of the other intermediate block 10b are inserted are opened on the other surface side of the intermediate block 10b. In addition, recesses 50a, 50b, 50c into which the protrusions 44a, 44b, 44c are inserted are opened.
Of the recesses 50a, 50b, and 50c, the projections 44a and 44b, and the projections 44b and 44c are connected between the recesses 50a and 50b, and between the recesses 50b and 50c. A concave groove 51 into which the connecting portion 45 is inserted is formed.
After the terminal screw 12, the box 26, and the current plate 28 are attached to the intermediate blocks 10b and 10b in predetermined positions as shown in FIG. 6, the intermediate blocks 10b and 10b are integrated as shown in FIG. .
At this time, the protrusions 36, 36, 36 formed on one of the intermediate blocks 10b, 10b and the protrusions 44a, 44b, 44c are replaced with the corresponding recesses 48, 48, 48 formed on the other intermediate block 10b. And are inserted into the recesses 50a, 50b, 50c.
By integrating the intermediate blocks 10b and 10b, as shown in FIG. 11, the protruding plate 46 of the other intermediate block 10b enters the notch 40 of one upper partition 42 of the intermediate blocks 10b and 10b, and the terminal The screw portion 12b of the screw 12 is positioned.
As shown in FIG. 6, the head 12 a of the terminal screw 12 is positioned between the upper partition portion 42 and the protrusion 43 by mounting the terminal screw 12 in a predetermined position.

As shown in FIG. 11, an L block 10a shown in FIGS. 12 (a) and 12 (b) and a block body shown in FIGS. 13 (a) and 13 (b) are integrated into a block body in which a predetermined number of intermediate blocks 10b, 10b,. Integrate with R block.
The L block 10a and the block body are integrated by combining the protrusions 36, 36, 36 and the protrusions 44a, 44b, 44c of the intermediate block 10b forming one end of the block body with the corresponding L block 10a. This is done by inserting into the corresponding recesses 48, 48, 48 and recesses 50a, 50b, 50c formed.
In the L block 10a, a notch 52 into which a fixing screw is inserted when the terminal block 10 is mounted is formed near the center. For this reason, the recess 50c formed in the L block 10a is shallower than the recesses 50a and 50b, as shown in FIG. The protrusion 44c of the intermediate block 10b inserted into the recess 50c of the L block 10a is formed shorter than the other protrusions 44a and 44b.

Further, the integration of the R block 10c and the block body corresponds to the concave portions 48, 48, 48 and the concave portions 50a, 50b, 50c formed in the intermediate block 10b forming the other end of the block body. This is done by inserting the protrusions 36, 36, 36 formed on the block 10c and the protrusions 44a, 44b, 44c.
Also in the R block 10c, a notch 52 into which a fixing screw is inserted when the terminal block 10 is mounted is formed near the center.
Further, as shown in FIG. 13B, the protrusions 44a, 44b, 44c formed on the R block 10c are formed independently from each other, and the protrusions 44a, 44b are longer than the protrusion 44b. Is formed.
As described above, the insulating base forming the terminal block 10 shown in FIG. 1 is formed by three types of blocks, ie, an L block 10a, an intermediate block 10b, and an R block 10c made of resin. It can be adjusted by the number of blocks 10b.
In the above description, a terminal block composed of an articulated insulating base formed by integrating a plurality of resin blocks has been described. However, the present invention is similar to the terminal block shown in FIG. The present invention can also be applied to a terminal block made of an insulating base formed by molding.

It is a front view which shows an example of the terminal block which concerns on this invention. FIG. 3 is a side view, left side view, and right side view of the terminal block shown in FIG. 1. It is a fragmentary sectional view of the terminal block shown in FIG. It is a partial expanded sectional view of the terminal block shown in FIG. It is explanatory drawing explaining the procedure which mounts a name plate on the terminal block shown in FIG. It is explanatory drawing explaining the state of the terminal screw 12 with which the intermediate | middle block 10b which forms the terminal block shown in FIG. It is explanatory drawing explaining the terminal screw 12 and the box 26 shown in FIG. It is explanatory drawing explaining the box 26 shown in FIG. It is the front view, top view, side view, and back view of the intermediate block 10b which forms the terminal block shown in FIG. It is a longitudinal cross-sectional view of the intermediate block 10b. It is explanatory drawing explaining the state which integrated the intermediate blocks 10b and 10b. It is the side view and bottom view of L block 10a which form the terminal block shown in FIG. It is the side view and bottom view of R block 10c which form the terminal block shown in FIG. It is explanatory drawing explaining the conventional terminal block.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Terminal block 10a L block 10b Intermediate block 10c R block 12 Terminal screw 13 Overhang | projection part 14 Name plate 16 Opening part 18 Groove 20 Through-hole 22 Stopper part 24a, 24b Protrusion part 26 Box 28 Current supply board 30 Concave part

Claims (6)

A terminal block in which at least two rows of terminal screws arranged with a plurality of terminal screws connected to the electric wire terminals are provided in parallel in the long side direction of the rectangular insulating base,
The insulating base is formed to have a width that exposes the heads of the terminal screws of the other terminal screw row when the heads of the terminal screws constituting the one side of the terminal screw row are covered. A name plate is slidably mounted between the terminal screw rows,
The terminal block is provided with a lock member that locks the name plate when the name plate slides to one side of the terminal screw row. A concave groove into which an end portion of the name plate is slidably inserted is formed in each of both side plates on the short side of the insulating base, and one of the concave grooves is shorter than the concave groove and A slit-shaped through hole into which the end of the name plate can be inserted is communicated,
A convex portion that locks the name plate when the name plate slides to one side of the terminal screw row is formed on at least one inner wall surface of the concave groove formed in the side plate. The terminal block described.   In the through hole formed in one of the side plates, a part of the inner wall surface is formed on an inclined surface so that the other side of the end portion of the name plate can be inserted from an oblique outer side of the insulating base, Each of the end portions of the name plate is inserted into the recessed grooves of both side plates, and a stopper portion is formed so that the name plate slidably mounted on the insulating base does not come out from the through hole. The terminal block according to claim 1 or claim 2.   One end of the name plate is pushed down by inserting the other end of the insulating base into the through hole formed on one side of the side plate, and the other end of the name plate is The terminal block according to claim 3, wherein the name plate is formed of a plate material that can be bent in a curved shape so that the name plate can be inserted into a recessed groove formed in the side plate of the device.   5. A recess into which the end on the long side of the name plate is inserted is formed at each end of the projecting portion formed at predetermined intervals on both side plates on the long side of the insulating base. The terminal block according to any one of the above.   The terminal block according to claim 1, wherein the insulating base is a connection-type insulating base formed by sequentially combining a plurality of block portions.

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