JPS6042426Y2 - switch - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a switch for setting the time of a digital clock.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a fan base having a support 3 protruding from its upper end on which a fan motor 2 is pivotally supported in a vertically movable manner. It is equipped with a digital clock 4 that controls the time and displays the time.

The clock 4 has a decorative plate 6 that closes the front opening 5 of the pillar 3.
A display unit 7 that displays time and the like is fixed to the base plate 6, a clock board 8 that incorporates a counter such as an LSI that is screwed to the lower end of the decorative plate 6, and an initial operation of the counter that is incorporated in the board 8. It consists of a switch 9 for making settings.

The display section 7 and the watch board 8 are connected by a connection cord 10.

The decorative plate 6 has a pair of holding pieces 11 formed at the upper end of the plate.
is guided and held by a rib 12.12 stretched inside the support column 3, and a mounting piece 13.13 protruding from the end of the plate is attached to a boss 15.15 suspended from the base 1 with a screw 14.14. The decorative plate 6 is fixed to the base 1 by screwing.

The switch 9 includes a switch frame 16 integrally formed with the base 1, and an operation piece 17 pivotally supported by the frame 16.
and a switch board 1 integrally formed with the clock board 8.
8 and more.

The frame body 16 has a cylindrical portion 19 hanging therefrom, from which the operating portion 20 of the operating piece 17 protrudes, and a pivot notch 21 formed at the lower end of the cylindrical portion 19 is provided with the operating portion 20 . A pivot shaft 22.22 protruding from the piece 17 is pivotally supported.

Further, the operation piece 17 is formed with quarter-disc-shaped protrusions 23, 23 that come into contact with the switch board 18 when the operation part 20 is pressed from above, and the circular arcs of the protrusions 23, 23 are formed on the operation piece 17. When the operating piece is rotated and tilted, the edge of the base plate 18
It moves while in contact with and serves as a rotation guide.

The switch board 18 has a movable contact piece 24 and a fixed contact piece 2.
5 are fixed, and the movable contact piece 24 has one end fixed and is open with the fixed end side as a fulcrum so that the other end is always located apart from the fixed contact piece 25.

Therefore, the movable contact piece 24 always has an elastic force in a direction away from the fixed contact piece 25.

The operation piece 17 utilizes the elastic force of the movable contact piece 24 to push up the abutting portion 26 of the operation piece 17 with the movable contact piece 24, thereby causing the pivot shaft 22, 22 of the operation piece 17 to move upwardly.
is held in the pivot notch 21, and the operation piece 17 is held in a state before it is rotated and tilted.

The switch board 18 is mounted on a post 27 hanging from the base 1 so that it does not bend due to the pressure of the operating piece 17.
It is fixed with screws 28.

Next, the action will be explained.

The switch 9 is assembled by inserting the operating piece 17 into the cylindrical portion 19 of the switch frame 16 from below and then attaching the pivot shaft 22.
, 22 in the pivot notch 21, the switch board 18 may be fixed to the frame 16.

Therefore, assembly can be performed very easily and work efficiency is improved.

Furthermore, since the elasticity of the movable contact piece 24 is used to return the operation piece 17 to the state before it was rotated and tilted, there is no need for a special return spring, and the number of parts can be reduced.

Furthermore, in this embodiment, the switch frame 16 is attached to the base 1.
Since the switch board 18 is formed integrally with the clock board 8, the switch 9 can be assembled at the same time as the clock 4 is assembled into the base 1, which further improves work efficiency. .

Moreover, when the main switch 9 is pressed from above,
The protrusions 23, 23 come into contact with the board 18 and the contacts do not close, and in order to close the contacts, the operation piece 17 must be pushed diagonally from above and rotated. The contacts do not close, preventing erroneous operation.

As described above, in the present invention, the operation piece of the switch is inserted from below so as to protrude from the through hole formed in the switch frame, and the pivot formed on the operation piece is inserted into the pivot notch formed on the frame. An elastic movable contact piece whose one end is attached to a switch board which is pivotally supported and fixed to the frame body presses the operation piece upward, and when the operation piece is pressed from above, it comes into contact with the switch board. A quarter-disc shaped protrusion is integrally formed on the operating piece to prevent it from being pushed in and to guide the operating piece when it is rotated and tilted, so the switch can be opened and closed by pushing the operating piece diagonally upward. It is necessary to rotate and tilt the operation piece, which prevents a hand or the like from accidentally touching the operation piece and causing an erroneous operation.

In addition, the switch can be assembled by simply inserting the operating piece from below the frame and fixing the board to the frame, and since the operating piece is pushed up with a movable contact piece, the operating piece is biased. It is not necessary to use a special elastic body, and the number of parts is reduced and assembly work efficiency is improved, which has great practical effects.

[Brief explanation of the drawing]

Figure 1 is a side view of a fan incorporating a switch of the proposed structure, Figure 2 is a front view of the same, Figure 3 is a partial sectional view, Figure 4 is an exploded sectional view of the same part as Figure 3, and Figure 5. Figure 6 is a plan view of the operating piece, Figure 7 is a sectional view of the switch, and Figure 8 shows the switch in its operated state. FIG. 9...Switch, 17...Operation piece, 1
6... Switch frame body, 19... Cylindrical part (
Through hole), 22.22... Axis, 21...
・Pivot notch, 18...Switch board, 24...
...Movable contact piece, 23.23...Protrusion piece.

Claims (1)

[Scope of utility model registration request] An operating piece of the switch is inserted from below so as to protrude from a through hole formed in the switch frame, and a pivot formed in the operating piece is pivotally supported in a pivot notch formed in the frame; An elastic movable contact piece whose one end is attached to a switch board fixed to the frame body presses the operating piece upward, and when the operating piece is pressed from above, it comes into contact with the switch board and prevents the pushing. A switch in which a quarter-disk shaped protrusion is integrally formed on the operating piece to guide the operating piece when rotating and tilting it.