JPH04123730A - knob device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a push-and-turn knob device for controlling switches and the like.

Conventional technology Conventionally, in this type of knob device, when the drive shaft is pushed and moved through the knob body, the radial pin provided on this shaft separates from the groove formed in the controlled part such as a switch. death,
Subsequent rotation operations were allowed. That is, unless the knob body is pushed, the controlled section cannot be controlled by rotating the knob body.

However, with the above configuration, the user's body may come into contact with the knob body and cause it to rotate unexpectedly, for example, when the controlled part turns on or off the electric heater. In devices that perform this type of heating, there is a risk that the heater may generate heat without you noticing, causing burns or even a fire. Additionally, equipment with cutters posed a risk of injury.

The present invention solves these conventional problems and provides a knob device with further improved safety.

Means for Solving the Problems In order to achieve the above object, the present invention provides a drive shaft that is allowed to be operated in the rotational direction by pushing and moving the drive shaft in the axial direction, and a target that is controlled by the rotational direction operation of the drive shaft. A control section, a knob body attached to the drive shaft, a stopper button attached to the outer periphery of the knob body so as to be freely protrusive and retractable in the radial direction, and a stopper button that protrudes toward the controlled section; The stopper button is provided with an elastic member that biases the button, and a movement regulating body that is disposed to face the protruding portion of the stopper button when it is in a free state.

Effects According to the present invention, when the stopper button is in the free state, the protruding portion thereof faces the movement regulating body, so that the knob main body cannot be pushed.

When controlling the controlled portion, the stopper button is moved back in the radial direction, and the protruding portion and the movement regulating body are placed in a non-opposing relationship. At this point, the knob body can be pushed and moved, and the controlled section can be controlled by what is called a push-and-turn operation.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 4, a controlled part 2 such as a switch fixed to a mounting plate 1 of a device is controlled to open and close contacts, etc. by rotation of a drive shaft 3. As shown in FIGS. This drive shaft 3 is of a so-called push-and-rotate type, and is set so that when it is pushed toward the controlled portion 2, a rotation stopper mechanism is opened and the drive shaft 3 can rotate there. The general configuration of the rotation stopper mechanism is such that a pin protrudes in the radial direction of the tip of the drive shaft 3, and a groove into which the pin fits is formed in the controlled portion 2.

Therefore, even if a rotational force is merely applied to the drive shaft 3, its rotation is prevented by the engagement between the pin and the groove. When the drive shaft 3 is pushed, the pin is removed from the groove and rotation becomes possible.

Reference numeral 4 denotes a substantially dish-shaped motion regulating body, which has a protrusion 6 protruding toward the outer periphery from a part of the annular rising peripheral wall 5 and engages with a hole 7 of the mounting plate 1 to prevent rotation and prevent the controlled part 2 from rotating. It is attached to.

A cap-shaped knob body 8 attached to the tip of the drive shaft 3
has a mounting hole 9 in its peripheral wall 10.

11 is a stopper button provided on the peripheral wall 10 of the knob main body 8 through the mounting hole 9 so as to be freely retractable;
It is biased toward the outer circumference by an elastic member 12 such as a leaf spring. A protrusion 13 is formed from the stopper button 11. This protrusion 13 is the stopper button 11
When in the free state, that is, at the outermost biased position,
It is set to correspond to the annular rising peripheral wall 5 of the movement regulating body 4.

Reference numeral 14 indicates a display board that displays the operation status of the knob body 8.

In the above configuration, the control operation of the controlled portion 2 first involves pressing the stopper button 11 in the dipping direction against the elastic member 12 . Here, the protruding portion 13 of the stopper button 11 is not opposed to the annular rising peripheral wall 5 of the movement regulating body 4. Therefore, the drive shaft 3 can be pushed and rotated by pushing the knob body 8.

The stopper button 11 does not need to be continuously pressed once the knob body 8 is pressed, and the protrusion 13 thereof slides on the inner surface of the annular rising peripheral wall 5 as the knob body 8 rotates.

As described above, in this embodiment, unless the stopper button 11 is pressed, the control operation of the controlled section 2 by the knob body 8 is not possible.

5 and 6, a plurality of recesses 15 are formed on the inner surface of the annular rising peripheral wall 5 of the movement regulating body 4 to change the contact pressure of the protrusion 13, so that a click is felt when the knob body 8 rotates. can have. Furthermore, what is shown in FIGS. 7 and 8 is a rising peripheral wall 5 of the movement regulating body 4.
The rotational resistance of the knob main body 8 is reduced by making it arcuate instead of annular.

Effects of the Invention As described above, according to the present invention, since the knob body cannot be pushed around unless the stopper button is pressed, there is no malfunction of the knob body even if a part of the body touches it unconsciously. Inadvertent heat generation of the heating element or rotation of the cutter through the controlled part does not occur, and as a result, an extremely safe device can be provided.

[Brief explanation of drawings]

Fig. 1 is a front view of a knob device showing an embodiment of the present invention, Fig. 2 is a cross-sectional view, Fig. 3 is a top view of the movement regulating body, Fig. 4 is a perspective view of the stopper button, and Fig. 5 is another one. 6 is a top view of the movement regulating body, FIG. 7 is a sectional view showing still another embodiment, and FIG. 8 is a top view of the movement regulating body. 2... Controlled part, 3... Drive shaft, 4... Motion regulating body, 8... Knob body, 11... Stopper button, 13... Projection part. Name of agent: Patent attorney Akira Okaji and 2 other names. 5

Claims (1)

[Claims] A drive shaft that is allowed to operate in the rotational direction by pushing and moving in the axial direction, a controlled part that is controlled by operating the drive shaft in the rotational direction, a knob body attached to the drive shaft, and a knob body of the knob body. A stopper button is attached to the outer periphery so as to be freely protrusive and retractable in the radial direction and has a protrusion toward the controlled part, an elastic material that biases the stopper button in the outer circumferential direction, and a protrusion of the stopper button in the free state. A knob device comprising a motion regulating body arranged to face each other.