JPH0136304Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a screw holding device for a terminal block that allows connection and removal without touching the screws when wiring is connected to the terminal block.

"Prior Art" There are various types of conventional holding devices having this type of holding device.

As shown in FIG. 20, when attaching the connecting fittings 66 attached to the ends of the wiring 65 to the terminal block 60, in which the terminal screws 63 are screwed into the screw holes 62 provided on both sides of the terminal plate 61. , the terminal screw 63 had to be removed from the screw hole 62 once.

The terminal block 70 shown in FIG.
A support plate 74 is attached to the spring 75 so that it can move up and down.
The terminal screw 63 attached to the support plate 74 is removed from the screw hole 62 and held above the screw hole.

The terminal block 80 shown in FIG. 22 has a plurality of mounting holes at regular intervals in the longitudinal direction of a resin plate 81 made of a flexible material, and a terminal screw 63 is removably inserted into the mounting hole along with a spring washer and a plain washer. The screw hole 6 of the terminal board 61 installed and attached to the terminal block 80
It is located above 2.

In the terminal block 60 shown in "Problems to be Solved by the Invention", when attaching the connecting fitting 66, the terminal screw 63 is removed from the screw hole 62, the terminal screw 63 is inserted into the hole 67, and then the screw hole is screwed in again. 62, the work process becomes complicated,
When assembling the terminal block, install the terminal screw 63 in advance.
This required a step of screwing the terminal board into the screw hole 62 of the terminal board, which was inefficient.

In the terminal block 70, the terminal screw 63 has come out of the screw hole 62, so after inserting the terminal screw 63 into the hole 67 of the connection fitting 66, the terminal screw can be inserted into the screw hole 62 by simply pushing down and rotating the terminal screw with a screwdriver. The terminal screw 63 can be screwed together. In this case, the terminal screw 63
Although there is an advantage that the step of removing the screw from the screw hole 62 is not necessary, other parts such as the support plate 74 and the spring 75 are required. Furthermore, it is necessary to provide a notch hole 76 in the terminal plate 61 through which the support plate 74 is inserted, resulting in an increase in cost.

When connecting wiring to the terminal block 80, the terminal screw 63 can be screwed into the screw hole 62 and connected to the connecting fitting 66 by simply rotating it while pushing down the terminal screw 63 with a screwdriver, but once removed from the resin plate 81, the connecting fitting 6 can be connected.
In the case where the terminal screw 63 connected to the terminal block 6 is loosened and removed from the screw hole 62, and the connecting fitting 66 is connected again with the terminal screw 63, the same process as in the case of the terminal block 60 shown in FIG. 20 is required, This was inconvenient for reuse. Furthermore, in the conventional type, the terminal block and the resin plate were formed into a special shape, so the resin plate could not be used in a commercially available terminal block.

"Means for Solving Problems" The present invention eliminates the drawbacks of the conventional technology and allows connection fittings to be detachably attached to the terminal block using terminal screws without directly touching the terminal screws. The structure consists of a terminal block that accommodates terminal boards to which terminal screws are attached in spaces separated by partition walls, and a transparent or semi-transparent flexible resin plate,
Pairs of first mounting holes each having a plurality of notches radially provided on the inner peripheral edge in accordance with the mounting positions of the terminal screws are formed at regular intervals, and a partition wall of the terminal block is formed between the mounting holes. A transparent or semi-transparent upper cover part is provided on both sides of the elongated resin plate, and a transparent or translucent A second mounting hole is inserted into the resin plate made of a flexible material such that the second mounting hole is aligned with the first mounting hole.
Mounting holes are formed in a straight line at regular intervals, and triangular notches with a narrow opening end and a wide interior are formed on both sides of the longitudinal direction on the inner peripheral edge of each mounting hole, and on both sides in the direction perpendicular to these triangular notches. A plurality of notches are provided, and a fitting recess for supporting the terminal screw is provided at the lower end of each holding piece through the fold, and a fitting recess for supporting the terminal screw is provided between each mounting hole for engagement with the partition wall and the locking portion. The terminal screw is comprised of a pair of lower holding parts each having an engaging convex part, and a terminal screw is removably hooked into the first and second mounting holes.

"Function" Thread the neck of the terminal screw into the mounting hole in the upper cover part located above the pair of screw holes provided in the terminal board to connect the wiring, and the terminal screw into the mounting hole in the lower holding part. The upper cover part, which supports each terminal, and the lower holding part are mounted on the terminal block, so align the screw holes in the terminal board with the holes in the connection fitting, and rotate the terminal screws while pushing them down with a screwdriver. The connecting fitting can be connected by simply turning the terminal screw, and the original state can be restored by simply rotating the terminal screw in the opposite direction.

``Embodiment'' To explain the embodiment of the present invention with reference to the drawings, first, 41 is a terminal block having a space 44 partitioned by partition walls 42, 42 having a recessed part 43 in the upper middle part. A connecting plate 47 having screw holes 46 into which terminal screws 45 are screwed is mounted on both sides. Furthermore, hooking portions 48 are provided at the upper portions of both sides of each partition wall 42 by bending the corner portions and biting into them obliquely. The terminal screw 45 has a spring washer 50 and a flat washer 51 attached to the neck of the screw, as shown in FIG. 53 is formed.

Reference numeral 1 designates the upper cover portion, which is made of a transparent or semi-transparent flexible material such as an insulating plastic film or plastic plate, and is used by cutting it into the same length as the terminal block. This upper cover part 1 is provided with a recessed line 2 that engages with the recessed part 43 of the terminal block in the central part in the longitudinal direction, and between the flat surfaces 3, 3 located on both sides of this recessed line. Terminal block partition wall 4
A locking part 4 is formed in which the upper part of the lower holding part 2 comes into contact, and in this locking part 4, this locking part 4 is inserted through step parts 5 and 6 in order to accommodate an engaging convex part 12 of a lower holding part 11, which will be described later. A recessed portion 7 corresponding to the wall thickness of the mating convex portion is provided.
Furthermore, a first mounting hole 9 is provided approximately at the center of the flat surface 3, with a plurality of notches 8 radially formed on the inner peripheral edge. The circumferential surface of the first mounting hole 9 has a plurality of notches 8 so as to have further elasticity. Further, both longitudinal edges of the upper cover portion 1 are bent downward to provide hook pieces 10, 10 continuously in the longitudinal direction that have elasticity and are hooked to the hook portions 48 of the partition wall. There is.

11 is a lower holding part, and 2 parts are attached to one upper cover part.
It uses two lower holding parts, each of which is made of a long length of transparent or translucent flexible insulating plastic film or plastic plate. This lower holding part 11 is provided with engaging parts 12 that engage with the partition wall 42 of the terminal block at regular intervals, and the holding surfaces 13 that are connected to the lower part of the engaging parts are wider than the width of the engaging part. The lower holding part has folds 14 and 1 in the longitudinal direction and perpendicular direction, respectively.
Fitting recesses 16, 16 are provided at the lower end of the narrow holding piece 15 that protrudes through the terminal screw 45 so that the threaded portion 53 of the terminal screw 45 can be held and screwed together from both sides. Approximately in the center of this holding surface 13, one or more notches 18 are provided on each holding side at the inner peripheral edge of second mounting holes 17 provided at the same intervals as the upper cover portion, and an engaging portion This holding piece 1 is provided with a triangular notch 19 on the side where the opening end is narrow and the inside is widened.
5 and 15 have even more elasticity. In the figure, 20 is a name plate.

Next, the operation of this embodiment will be described. It is only necessary to attach the terminal boards 47 without the terminal screws 45 to the terminal blocks 41. Next, the threaded part 53 of each terminal screw 45 is screwed into the second mounting hole 17 of the lower holding part, and each engaging part 12 of this lower holding part is locked to the upper part of each partition wall 42. , the holding pieces 15, 15 on both sides of the upper cover part are engaged with the engaging parts 48, 48 of the respective partition walls, and the heads 52 of each terminal screw are engaged with the respective first mounting holes 9. In this case, the engaging part 12 of the lower holding part 11 fits into the recessed groove part 7 of the upper cover part and its position is restricted in the direction perpendicular to the longitudinal direction of the terminal block, and the upper cover part 1 is also recessed. The position of the terminal block in the longitudinal and perpendicular directions is regulated by the strip 2 and the hooking piece 10, and the centers of the first and second mounting holes 9 and 17 are made the same. In this case, the terminal screws 45 may be attached after attaching the lower holding part 11 and the upper cover part 1 to the terminal block.

As shown in FIGS. 11 and 12, the connection fittings 6
6, first align the screwdriver 49 with the screwdriver groove on the head of the terminal screw 45 and press down to open the first mounting hole 9 with a notch.
is pushed out by the head 52, and after the threaded portion 53 matches the screw hole 46, the head 52 passes through the first mounting hole 9 by rotating the screwdriver 49 and screwing the screw downward. (Figure 14). Furthermore, terminal screw 4
5 and screw it downward, the lower holding part 1
Because of the notch 18 and the triangular notch 19 in the second mounting hole 17 of the holding surface 13 of ), then the head 52 passes through the second mounting hole 17 and connects the connection fitting 66 to the terminal plate 4.
7 (Fig. 16).

Next, when removing the terminal screw 45 from the terminal board 47 in the state shown in FIG. are pushed upward and expanded (Fig. 17), and when the terminal screw is further rotated in the opposite direction, the head 52 passes through the second mounting hole 17 having the notch 18 and the triangular notch 19, and then the flat washer 51 to spread the holding pieces 15 to the left and right, and the fitting recesses 16 existing at the lower ends of the holding pieces 15, 15,
Since the threaded portion 53 of the terminal screw is held by the terminal screw 16, the terminal screw 45 is held by the lower holding portion 11 even if it is removed from the screw hole 46 of the terminal plate (FIG. 18). This first
While the lower holding part 11 is changing from the state shown in FIG. 8 to the state shown in FIG. 19, as shown in FIG. is lifted upward, and on the other hand, the flexible pieces X on both sides of the triangular notch 19 are brought down. At this time, the four locations at the tip of the flexible piece X also support the threaded portion 53.
Furthermore, by rotating the terminal screw 45, the head 52 is positioned on the upper surface of the holding surface 13 having the second mounting hole 17 (FIG. 19), and the lower end of the threaded portion 53 is located in the threaded hole 4.
6 and the connecting fitting 66 can be removed from the terminal screw 45. Then, by further rotating the terminal screw 45 in the opposite direction, the first mounting hole 9 with the notch is expanded, and the head 52 of the terminal screw is locked onto the upper cover part 1, returning to the original position (Fig. 11). ). Therefore, the terminal screw 45 can be rotated and reused without touching it. In this way, even if the terminal screw 45 comes off from the screw hole 46 of the terminal board, it can be positioned above the screw hole, which is convenient for reuse.

"Effects of the invention" The invention as described above has the following effects.

Each terminal screw is positioned over the screw hole of the terminal board by the upper cover part and the lower holding part, and the connecting fittings can be attached and detached by simply rotating them with a screwdriver. There is no need to touch the screws when removing.

When assembling the terminal block, there is no need to attach terminal screws to the screw holes in the terminal board, so the assembly work can be speeded up.

Even during wiring connection work, there is no need to take out the terminal screws from the screw holes in the terminal board, so the connection work on site can be performed extremely efficiently.

This can be done in a completely separate process from the terminal block production, so it can be combined later.

In the terminal block manufacturing process, the process of tightening the terminal screws is not necessary, so the manufacturing process can be shortened.

The upper cover part can be used as it is as a protective cover for the name plate, so there is no need for a cover.

After connecting the wiring to the terminal block, the upper cover part and the lower holding part can be removed as they are when they are no longer needed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially omitted plan view of the upper cover part, FIG. 2 is an enlarged plan view of the same, and FIG. 3 is a sectional view taken along the line A-A in FIG. Figure 4 is a cross-sectional view taken along line B-B in Figure 2, and Figure 5 is Figure 2C.
-C line sectional view, Fig. 6 is Fig. 2 D-D line sectional view,
Fig. 7 is a partially omitted plan view of the lower holding part, Fig. 8
The figure is an enlarged plan view of the same part, Figure 9 is a sectional view taken along the line E-E in Figure 8, Figure 10 is a plan view of the main part of the lower holding part when it is unfolded, and Figure 11 is a terminal block with terminal screws attached. Figure 12 is a cross-sectional view taken along line F-F in Figure 11, Figure 13 is a front view of the terminal screw,
Figures 14 to 19 are main part sectional views showing the attachment/detachment relationship between the terminal screw, the upper cover part, and the lower holding part;
0, 21, and 22 are sectional views showing conventional examples, respectively, and FIG. 23 is a plan view showing an example of a connecting fitting. DESCRIPTION OF SYMBOLS 1... Upper cover part, 4... Latching part, 8... Notch, 9... First mounting hole, 10... Latching piece, 11
. . . Lower mounting portion, 12 . . . Engaging convex portion, 16 .

Claims (1)

[Scope of utility model registration request] In a terminal block that accommodates terminal boards to which terminal screws are attached in spaces separated by partition walls, a transparent or semi-transparent flexible resin plate has a plurality of holes on its inner periphery in accordance with the mounting positions of the terminal screws. Pairs of first mounting holes each having radial notches are formed at regular intervals, and a locking portion that locks to the upper part of the partition wall of the terminal block is provided between the mounting holes, and On both sides of the elongated resin plate, there is an upper cover part provided with hook pieces to be hooked to both ends of the partition wall, and the resin plate made of a transparent or translucent flexible material has an upper cover part provided with the first mounting hole. Second mounting holes are formed linearly at regular intervals according to the positions of the mounting holes, and triangular notches with narrow opening ends and wide interiors are formed on both sides of the longitudinal direction on the inner peripheral edge of each mounting hole. A plurality of notches are provided on both sides in the direction perpendicular to the mounting hole, and a fitting recess for supporting the terminal screw is provided at the lower end of each holding piece through the fold, and between each mounting hole is provided a fitting recess for supporting the partition wall. and a pair of lower holding parts having an engaging convex part that engages with the locking part, and a terminal screw is removably held in the first and second mounting holes.