JPH0411988B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a terminal block device used for connecting wiring.

"Conventional technology" Terminal block devices used for conventional wiring connections include:
There is one shown in FIG. That is, horizontal piece 1
A terminal screw 104 is attached to the horizontal piece 101 of a conductive washer 103, which is made by connecting a vertical piece 102 to the end of the horizontal piece 101 and a terminal screw 104, so that it can rotate but cannot move forward or backward, and the washer 103 is attached to the lower part of the vertical piece 102. A coil spring 105 is compressed and slidably provided on an insulating terminal block 106, and screw holes 107, 1 are provided.
The terminal plate 108 with 07 engraved thereon is attached to the terminal screw 10.
4, 104 and supported by the terminal block 106. Washer 10 of coil spring 105
The coil spring 1 having protrusions 111 is attached to the lower part of the vertical piece 102 of No. 3 as shown in FIG.
05 is externally fitted, or as shown in FIG. 13, a horizontal receiving plate 112 is provided at the lower end and a coil spring 105 is brought into contact with the lower surface of the receiving plate 112.

The horizontal piece 101 of the washer 103 is urged upward by a coil spring 105 to create a gap between the lower end of the terminal screw 104 and the upper surface of the terminal plate 108 to facilitate insertion of the crimp terminal at the tip of the wiring. Wiring can be attached to the terminal plate 108 by simply placing the terminal screw 104 on the terminal plate 108 in the screw hole 107, pushing down the terminal screw 104 against the biasing force of the coil spring 105, and screwing it into the screw hole 107.

"Problem to be solved by the invention" The terminal block 106 has a terminal screw 104, a washer 103,
To attach the coil spring 105 and the terminal plate 108, as shown in FIG.
An operator manually fits the coil spring 105 onto the protrusion 111 at the lower end of the terminal block 106, and then attaches the washer 103 to the center support piece 116 of the terminal block 106 and the guide rib 117.
vertical piece 102 in the guide groove 118 formed between
Next, attach the terminal board 108 to the side support pieces 119, 119 and the center support piece 116 of the terminal block 106.
This is done by placing it on the center support piece 116 and fitting it into the support groove 121 formed between the center support piece 116 and the support piece 120 located above. In this way, in order to attach the coil spring 105 to the lower end of the vertical piece 102 of the washer 103, it can only be fitted onto the protrusion 111 manually, making it impossible to assemble the terminal block device with an automatic machine and making automation impossible. It was possible. Also, the first
As shown in FIG. 3, if the lower end of the vertical piece 102 of the washer 103 is formed on the receiving plate 112, the coil spring 105 cannot be held in a fixed position.

"Means and Effects for Solving the Problems" Therefore, in view of the above circumstances, the present invention provides an inclined surface for guiding coil spring insertion at the lower end of the vertical piece of the washer, in order to enable automatic assembly of the terminal block device. The washer with the terminal screw attached is assembled into the terminal block, the terminal block is attached, and then the coil spring is pushed in along the guide slope. Insert into the groove.

"Embodiments" The present invention will be described in detail based on embodiments shown in FIGS. 1 to 10. The ones in Figures 1 to 6 are for positioning using the inner diameter part of the coil spring.
The ones shown in Figures 1 to 10 are for positioning using the outer diameter portion of the coil spring.

First, those in FIGS. 1 to 6 will be explained. The washer 1 has a horizontal piece and a vertical piece 3 connected to the end of the horizontal piece 2,
Furthermore, a receiving piece 4 is connected to the lower end of the vertical piece 3 and is made of a conductive material such as metal.

The bottom surface of the receiving piece 4 is formed with an inclined surface 6 that opens wide at the point where the coil spring 5 first comes into contact and gradually narrows in the direction in which the coil spring 5 is inserted, so that the coil spring 5 can be easily inserted.
Grooves 7, 7 for fixing are carved. The grooves 7, 7 may be omitted on the entrance side and may be provided only on the insertion back side if necessary. A terminal screw 8 is attached to the horizontal piece 2 of the washer 1 so that it can rotate but cannot move forward or backward.

The terminal block 11 made of an insulator such as synthetic resin is connected to the second,
As shown in Figures 3 and 4, the side support piece 1 has engaging steps 13, 13 inwardly from the vertical substrate 12.
4, 14, a center support piece 15, and a support piece 16 are provided respectively, and a support groove 17 is provided between the center support piece 15 and the support piece 16. Further, guide ribs 18, 18 are arranged on both sides of the center support piece 15, and a guide groove 19,
form 19.

Note that the hatching portion at the lower end corner of the vertical piece 3 of the washer 1 shown in FIG. 1 may not be provided depending on the structure of the terminal block 11.

For assembly, first, as shown in FIG. 3, the vertical piece 3 of the washer 1 with the terminal screw 8 mounted thereon is fitted into the guide groove 19 of the terminal block 11. Next, attach the terminal plate 22 with screw holes 21, 21 to the central support piece 1.
5. Place it on the side support pieces 14, 14, engage the steps 13, 13 at both ends, and fit into the support groove 17. Subsequently, the coil spring 5 is pushed in along the upper surface of the horizontal board 23 of the terminal block 11 and the inclined surface 6 of the receiving piece 4. Then, the coil spring 5 is guided by the inclined surface 6 and goes into the back while contracting, and eventually the wire of the uppermost terminal of the coil spring 5 fits into the grooves 7, 7 as shown in FIG. 4, and the coil spring 5 is attached. fixed in position. In this manner, the coil spring 5 can be fixed by simply pushing it into the terminal block 11 from the front direction, so that the terminal block device can be automatically assembled by an automatic machine.

Incidentally, the inclined surface at the lower end of the vertical piece 3 of the washer 1 is not limited to that in the above embodiment, and is shown in FIGS. 5 and 6.
As shown in the figure, the guide piece 2 is inclined at the lower end of the vertical piece 3.
1 and 22, and a cut-out 23 or a protrusion 24 for locking the upper end of the coil spring 5 may be provided.

7 to 10 illustrate positioning using the outer diameter portion of the coil spring 5. In FIG. 7, a support piece 31 is provided at the lower end of the vertical piece 3 of the washer 1, one end is formed as an inclined surface 32 for guiding the insertion of the coil spring 5, and the outer diameter part of the coil spring 5 is engaged with the lower surface of the support piece 31. A stepped portion 33 is formed. In FIG. 8, a curling piece 34 is formed on the other end side of the support piece 31 so as to further hold the outer diameter portion of the coil spring 5, although it is the same as in FIG. 7. In FIG. 9, a circular protrusion 35 capable of supporting the outer diameter portion of the coil spring 5 is formed upward on the support piece 31, and the coil spring 5 is supported there. In FIG. 10, a vertical support piece 41 is provided at the lower end of the vertical piece 3 of the washer 1,
An inclined surface 42 for guiding the insertion of the coil spring 5 is formed on the tip side of the lower surface, and a holding groove 4 for supporting the outer diameter portion of the coil spring 5 is formed on the lower surface of the vertical support piece 41.
3 to hold the coil spring 5 there.

``Effects of the Invention'' As described above, the present invention forms an inclined surface for guiding coil spring insertion at the lower end of the vertical piece of the washer, and also cuts a groove for fixing the coil spring, so that the coil spring can be mounted on the front side of the terminal block. Since the terminal block device can be installed by simply pushing it in, it becomes possible to automatically assemble the terminal block device using an automatic machine.

[Brief explanation of drawings]

Fig. 1 is a side view of a specific embodiment of the present invention, Fig. 2 is a front view showing a washer with a terminal screw attached, a coil spring, and a terminal plate assembled into a terminal block, and Fig. 3 is a coil spring. FIG. 2 is a cross-sectional view showing a state in which the coil spring has begun to be installed, FIG. 4 is a vertical cross-sectional view showing a state in which the coil spring has been installed, and FIG. 5 is a perspective view of the main parts of another embodiment of the washer.
FIG. 6 is a perspective view of the main parts of another embodiment of the washer, and FIG.
Figures 10 to 10 are a perspective view and a side view of a washer that holds the outer diameter portion of a coil spring, respectively. Figure 11 is a perspective view showing how to assemble a conventional terminal block device. Figure 12 is a diagram showing how to attach a terminal screw to a conventional washer. FIG. 13 is a side view showing the installed state, and a perspective view of the main parts of another conventional washer. 2...Horizontal piece, 3...Vertical piece, 1...Washer, 8
...Terminal screw, 5...Coil spring, 11...
...Terminal block, 21...Screw hole, 13...Terminal board, 6
... Inclined surface for guiding coil spring insertion, 7...
Groove for fixing the coil spring.

Claims (1)

[Claims] 1. A terminal screw is attached to the horizontal piece of a washer consisting of a horizontal piece and a vertical piece connected to the end of the horizontal piece so that it can rotate but cannot move forward or backward, and the washer is compressed with a coil spring at the bottom of the vertical piece to form a terminal block. In a terminal block device in which a terminal block is slidably provided on a washer and has a screw hole carved therein and is supported on a terminal block with the screw hole facing the terminal screw, a coil spring is inserted into the lower end of the vertical piece of the washer. A terminal block device characterized in that a guide slope is formed and a coil spring fixing groove is carved.