JPH0526672Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a rotary operation switch device, and specifically, the invention is a rotary operation switch device for controlling energization in electric circuits such as rotary switches, rotary variable resistors, and timers. This relates to a switch device used in

(b) Prior art As a technology prior to this invention, the Utility Model Publication No. 54-26480
The operating lever mounting device described in the publication and the actual public service in 1983
There is a scale plate mounting device described in the -9810 publication.

The operating lever mounting device regulates the rotation range of the operating knob using a convex portion formed on the operating knob and a stopper on the inner surface of the recess formed in the frame into which the operating knob is inserted, and prevents the operating knob from rotating more than necessary. However, there was a problem that complicated the shape of the convex and concave parts.

The dial scale plate mounting device positions the dial scale plate using a protrusion formed on the frame, but the protrusion is exposed, leaving some problems in terms of appearance.

(c) Problems to be solved by the invention This invention solves the problems in the conventional technology,
To provide a rotary operation type switch device having a simple structure, capable of reliably regulating the rotation range of an operation knob, and also positioning a display plate for confirming the operating position of the operation knob.

(d) Means for solving the problem The present invention consists of a switch body with a protruding rotary operating shaft, a frame housing the switch body, an operating knob attached to the rotating operating shaft protruding from the frame, and an operating knob. and a display plate attached to the frame so that the display is positioned around the frame, and a regulating portion for regulating the rotation range of the operating knob is formed in a portion facing the operating knob and the frame. The problem can also be solved by means of forming a positioning part on the display board that engages with the regulating part.

(e) Function The present invention prevents excessive force from being applied to the switch body by regulating the rotation range of the operating knob using a regulating section, and uses the regulating section formed on the frame for positioning the display board. This allows alignment of the display board and the operation knob to be performed with a simplified structure.

(F) Embodiment The present invention is implemented using a rotary operation switch device 2 that controls the rotational speed and time of an electric fan 1.
This will be explained based on the drawings.

FIG. 4 is a perspective view of the electric fan 1, which is supported by a synthetic resin base 4 with a support 3 protruding from it, a synthetic resin back plate 5 that closes the bottom opening of the base 4, and the upper part of the support 3. It consists of a fan main body 6. A cord storage lid 7 is integrally formed on the back plate 5 with a thin hinge 8 so as to be openable and closable. A fitting and holding part 9 is formed on the periphery of the back plate 5, the periphery of the base 4 is inserted and held in the fitting and holding part 9, and the back plate 5 is fixed to the base 4 with screws. The fitting of the base 4 to the fitting holding portion 9 has a fitting force equivalent to temporary fixing.

Switch body 10 of rotary operation type switch device 2
The rotary operation shaft 11 protrudes. Rotary operation axis 1
1 with the operating knob 12, the electric motor of the electric fan main body 6 is sped up and stopped by appropriately switching the switch contacts of the switch body 10.
The switch body 10 has an "off" button to stop the electric motor.
position, and the “strong” position where the motor operates at high speed.
There is a "low" position in which low-speed operation is performed, and a time set position in which low-speed operation is performed for an arbitrary period of time, ie, up to three hours in the embodiment. When the rotary operation shaft 11 is rotated to the left from the "off" position, the position is switched between the "strong" position and the "weak" position. However, if the rotary operating shaft 11 is rotated further to the left than the "weak" position, the switch body 10 will be damaged. "cut"
When the rotary operation shaft 11 is rotated to the right with respect to the position, an appropriate time up to three hours is set depending on the rotation range, and at the same time, the electric motor is operated at a low speed. After being set at the time set position, the rotary operating shaft 11 rotates counterclockwise over time and returns to the "off" position. If the rotary operating shaft 11 is rotated further to the right from the 3 hour set position, the switch body 10 will be damaged.

The switch body 10 is provided with a mounting piece 13 having a screw insertion hole. The mounting piece 13 is prevented from moving in the lateral direction by a positioning support rib 14 vertically provided on the base 4 as a frame of the switch device 2.
A boss 15 is vertically provided on the base 4, and the mounting piece 13 is held between the boss 15 and a protrusion 16 of the back plate 5, and is fixed with a screw 17 that is screwed into the boss 15 from the protrusion 16. The rotation operation shaft 11 is a through hole 1 formed in the base 4.
It stands out from 8. The through hole 18 is formed in a size that allows the connection cylindrical shaft 19 of the operation knob 12 to be inserted, and the connection cylindrical shaft 19 is press-fitted onto the rotary operation shaft 11 and is prevented from rotating by the pin 20 of the rotary operation shaft 11. .
The cross-sectional view shown in FIG. 3 shows the state in which the device is held between the base 4 and the back plate 5 and the operating knob 12 is attached.

The operating knob 12 is formed into a disk shape with a relatively large diameter, and a pointer portion 21 for indicating the setting state of the switch body 10 is formed in a part of its periphery. The base 4 has a pointer section 21 indicating the setting state of the switch body 10.
A donut-shaped display board 22 is attached for displaying images. The display board 22 is attached with adhesive, and a recess 23 is formed on the upper surface of the base 4 on which the display board 22 is attached. Base 4 corresponding to the peripheral step of the recess 23
A reinforcing annular rib 24 is formed on the inner surface, and sink marks caused by the reinforcing annular rib 24 are not noticeable at the stepped portion of the peripheral edge of the recess 23. A support notch 26 for the power supply cord 25 is formed in the reinforcing annular rib 24 . The display board 22 has "off", "strong", "weak", "1", "2" and "3".
form the display. In the assembled state, the inner peripheral portion of the display board 22 overlaps with the operation knob 12.

A protruding regulating portion 27 for regulating the rotation range of the operating knob 12 is formed in a portion of the base 4 covered by the operating knob 12. In this embodiment, the regulating portion 27 is formed of a pair of pin-shaped protrusions to regulate clockwise and counterclockwise rotation, but the same may be applied to protrusions having a single width. However, by forming a pin-shaped protrusion as in the example, it can be formed with a simple effort such as drilling a hole in a mold, and it is difficult to cause sink marks, preventing deformation of the protrusion due to sink marks, and the amount of synthetic resin can be reduced. It also requires less.

The display board 22 is formed with a hole-like positioning part 28 into which the regulation part 27 is inserted, and the regulation part 27 also serves as a protrusion for positioning the display board 22 on the base 4. .

A protruding regulating portion 29 is formed on the inner surface of the operating knob 12 . When the operating knob 12 is rotated to the right or left, the regulating portion 29 abuts against the regulating portion 27, thereby preventing further rotation and preventing damage to the switch body 10.

It should be noted that the implementation structure of the present invention is not limited to the above-mentioned embodiments, but can be implemented in various ways without departing from the structural effects. For example, various shapes can be considered for the shape of the operating knob 12, the shapes and formation positions of the regulating portions 27 and 29 formed on the operating knob 12 and the base 4. Also, for positioning the display board 22 on the base 4, the regulating part 27 also serves as a hole, but the regulating part 27 does not need to be a through hole.
Any protrusion or notch inserted between the two may be used.

(g) Effects of the invention This invention uses the regulating part of the frame body that regulates the rotation of the operating knob to also position the display board, thereby simplifying the structure, preventing damage to the switch device, and making it easier to move the display board during assembly. Easy to install.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a plan view of the counterclockwise rotation state, Fig. 2 is a plan view of the clockwise rotation state, Fig. 3 is a sectional view of main parts, and Fig. 4 is a perspective view. Fifth
6 is a sectional view of the base, and FIG. 7 is a plan view of the display board. 2...Rotary operation switch device, 4...Base (frame body), 11...Rotary operation shaft, 12...Operation knob, 22...Display board, 27, 29...Regulation section, 2
8...Positioning section.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A switch body with a protruding rotary operating shaft, a frame housing the switch body, an operating knob attached to the rotating operating shaft protruding from the frame, and a display around the operating knob. and a display plate attached to the frame so that the operating knob and the frame face each other, a regulating part for regulating the rotation range of the operating knob is formed in a part where the operating knob faces the frame, and the regulating part is engaged with the regulating part formed on the frame. A rotary operation switch device that has a positioning part formed on the display board. 2. The rotary operation type switch device according to claim 1, wherein the operating knob and the regulating portion formed on the frame are formed of protrusions. 3. The rotary operation type switch device according to claim 1 or 2, wherein the positioning part formed on the display board is formed by a through hole into which the regulating part of the frame is inserted.