JPH0223009Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a board mounting device for equipment.

[Background technology]

Conventionally, as shown in FIGS. 6 and 7, board mounting legs 42 are erected on the top surface 41 of a mini-contactor 40 so that the mini-contactor can be mounted on a printed circuit board on which electronic components are mounted. Ta.

However, devices such as electronic thermal devices in which adjustment knobs, display sections, test buttons, reset buttons, etc. are provided on the top surface have a drawback that the above structure cannot be mounted on a printed circuit board.

[Purpose of invention]

The purpose of this invention is to provide a board mounting device for equipment that can be mounted on a board with the bottom side of the equipment facing the board.

[Disclosure of invention]

The apparatus for attaching a board to a device of this invention holds a device provided with a terminal screw on its upper surface, a conductive plate corresponding to the terminal screw, and forms a connecting portion on the upper end thereof to be tightened to the terminal screw, and connects the lower end to the electrically conductive plate. It is equipped with a terminal block that is used as a board mounting leg that protrudes from the bottom surface of the device. That is, the terminal block is electrically and mechanically attached to the device using terminal screws, and mounted on the board with legs that protrude from the bottom of the device. Therefore, the bottom side of the device can face the board, making it possible to apply it to electronic thermal devices and the like, as well as to existing devices.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 5. In the figure, 1 is an electronic thermal and 2 is a terminal block. The electronic thermal relay 1 has a plurality of terminal screws 3 arranged in rows on both sides of the top surface, a current adjustment dial 4, a drip indicator lamp 5, a reset button 6, and a test trip button 7 in the center of the top surface, and symmetrical positions at the bottom of both sides. A base mounting tongue piece 8 is protruded, and a mounting hole 9 is formed in the center thereof. Further, a derail mounting portion 10 is provided at the center of the lower part of both side surfaces. The internal structure of this electronic thermal is such that overcurrent is detected by CT and compared with a reference value to control the switching means, but the details are omitted.

The terminal block 2 has a predetermined number of through holes 12 formed in the width direction of the plate-shaped holder 11, and an opening 13 formed in the side surface of the upper end. Further, at both ends of the holding body 11, a dovetail tenon 14 is formed on one side, and a dovetail groove 1 is formed on the other side.
form 5. The conductive plate 16 is in the form of a vertically long strip, and its upper end is bent horizontally, and a notch 17 is formed at the edge to form a connecting portion 18 . Further, the lower end portion is narrowed to form a leg 21 so as to be inserted into a hole 20 of the printed circuit board 19. This conductive plate 16 is press-fitted into the through hole 12, the connecting portion 18 is positioned in the opening 13, and the legs 21 protrude from the lower surface of the holder 11.

This terminal block 2 is fixed to the electronic thermal terminal 1 by inserting the notch 17 of the connecting portion 18 between the terminal holder 22 of the terminal screw 3 and the terminal plate 23, and tightening the terminal screw 3. At this time, the legs 21 protrude below the bottom surface of the electronic thermal thermal 1 as shown in FIG. 2 due to dimensions. Then, attach the leg 21 to the hole 20 of the printed circuit board 19.
It is mounted on the printed circuit board 19 by inserting it into the board and soldering it.

Reference numeral 24 denotes an auxiliary block for attaching to the terminal screw 3a at the upper part of the attachment hole 9 of the electronic thermal 1. That is, the holder 11' is made shorter than the length of the holder 11 in the vertical direction so that the lower part of the conductive plate 16' protrudes larger, and the conductive plate 1
6' is passed through the mounting hole 9, and the leg 21' is mounted on the printed circuit board 19. Further, in order to securely fix the holding body 11', a dovetail groove 15' and a dovetail tenon 14' are formed on both sides of the holding body 11', and the dovetail tenon 14' is engaged with the dovetail groove 15 of the holding body 11. .

With this configuration, in addition to mounting using the mounting tongue piece 8 and the mounting portion 10, it is possible to mount the electronic thermal thermal 1 on the printed circuit board 19 with the bottom surface facing the printed circuit board 19, and in addition, the adjustment knobs 4, etc. on the top surface can be mounted on the printed circuit board 19. does not interfere with the functions of It can also be applied to the board mounting of various devices such as existing static overcurrent relays having terminal screws 3 arranged in rows on the top surface. Furthermore, the number of conductive plates of terminal block 2 is set to a predetermined value,
By forming tenons 14, 14' and dovetail grooves 15, 15' on both ends of the holders 11, 11', connection is possible, so it can be used commonly for models with different numbers of terminals. The terminal screw 3a on the upper part of the terminal screw 3a also allows the leg 21' to be taken out without any problem. Therefore, for example, the terminal block 2 alone can be applied to a mini contactor without a mounting tongue, and the combination of the terminal block 2 and the auxiliary block 24 can be applied to control devices such as electronic thermal relays and static overcurrent relays. can be shared.
In addition, in this invention, the board is printed circuit board 1.
The present invention is not limited to 9, and any substrate on which electronic components are mounted may be used.

[Effect of idea]

According to this invention, the device can be mounted in a general manner, and it can also be mounted on an electronic component mounting board without changing the normal mounting orientation of the device. This has the effect of being applicable to equipment.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of this invention, Fig. 2 is a sectional view of the device mounted on a board, Fig. 3 is an exploded perspective view of the terminal block, Fig. 4 is a plan view of the electronic thermal device, and Fig. 4 is a plan view of the electronic thermal device. 5 is a side view thereof, FIG. 6 is a half-sectional plan view of a conventional mini-contactor, FIG. 7 is a longitudinal sectional view, and FIG. 8 is a left side view thereof. 1...Electronic thermal (device), 2...Terminal block, 3, 3a...Terminal screw, 8...Mounting tongue piece,
9... Mounting hole, 16, 16'... Conductive plate, 18...
...Connection part, 21, 21'...leg.

Claims (1)

[Claims for Utility Model Registration] (1) A device having a terminal screw provided on its upper surface, holding a conductive plate corresponding to the terminal screw, forming a connecting part to be tightened to the terminal screw at the upper end thereof, and forming a connecting part to be tightened to the terminal screw at the lower end thereof. A board mounting device for a device, comprising a terminal block serving as a board mounting leg that protrudes from a lower surface of the device. (2) The board of the device according to claim 1, wherein a base mounting tongue protrudes from the lower side of the device, and the legs of the terminal block pass through the mounting holes of the tongue. Mounting device.