The invention is a high temperature control knob that is installed on the power control knob stem of an existing appliance to prevent a material being heated from reaching a predetermined maximum temperature (e.g., the burning point temperature for oil), and thereby preventing an undesired event (e.g., a fire). The high temperature control knob comprises an alignment means having at least one stop that is adjustable about a set of temperature markings containing the predetermined maximum temperature, and may further comprise a dial with an arm that mounts of the power control knob stem. The at least one stop may be aligned to the predetermined maximum temperature by rotating the alignment means about the power control knob stem and tightening a fixing means to hold the alignment means in place. The arm of the dial contacts the at least one stop preventing the appliance from exceeding the predetermined maximum temperature.

One or more examples relate to a knob-on-display. An apparatus of such a knob-on-display includes a touch surface, a dome switch pad, a dome switch, a rotation electrode pad, and an electrically conductive structure. The touch surface may include an electrically conductive material, the touch surface movable to a released position and to a depressed position. The dome switch may include an electrically conductive material. The dome switch may be physically mounted to and electrically connected to the dome switch pad. The rotation electrode pad may be in engagement proximity to a touch sensor of a touch screen device in both the released position and the depressed position. The electrically conductive structure may be physically and electrically connected to the dome switch pad and the rotation electrode pad, the electrically conductive structure defining a continuous electrically conductive path from the rotation electrode pad, through the dome switch, to the electrically conductive material of the touch surface in both the released position and the depressed position.

A longitudinal switch for an electric contact locking and position changing system was designed to position securely the movable switch elements (7), which are urged by springs (5) and a rack (1) and toothed gear (8) mechanism for moving a vertical shaft (9), acting upon fixed elements (contacts) (16) of an electrically insulating rail surface (15). Positions are changed by turning a control button (39) and the toothed gear (8), causing the vertical shaft (9) to rotate, thus moving the rack (1) and causing the movable elements (7) to slide on the semicircular surface (17) of the fixed elements (16), overcoming the force of the springs (5) and compressing them. Once the gap between the fixed elements (16) is located, the springs (5) push back, keeping the movable elements (7) locked and ensuring the effective electric contact with the electric current passing through these points of contact.

A rotational operation type switch includes a frame; a rotational operation button rotatably supported on the frame for rotational operation; a switching contact mechanism disposed below the operation button to face the operation button; and an operation mechanism disposed between the operation button and the switching contact mechanism, to switch the switching contact mechanism in conjunction with the rotational operation of the operation button. The switching contact mechanism includes a printed circuit board, a plurality of fixed contact electrodes disposed on the printed circuit board and spaced a predetermined distance away from each other, and a movable contact having a disc spring shape and disposed bridging between the plurality of fixed contact electrodes. The movable contact deforms to contact and separate from the fixed contact electrodes and switches an electrical connection between the fixed contact electrodes.

A rotational operation type switch includes a frame; a rotational operation button rotatably supported on the frame for rotational operation; a switching contact mechanism disposed below the operation button to face the operation button; and an operation mechanism disposed between the operation button and the switching contact mechanism, to switch the switching contact mechanism in conjunction with the rotational operation of the operation button. The switching contact mechanism includes a printed circuit board, a plurality of fixed contact electrodes disposed on the printed circuit board and spaced a predetermined distance away from each other, and a movable contact having a disc spring shape and disposed bridging between the plurality of fixed contact electrodes. The movable contact deforms to contact and separate from the fixed contact electrodes and switches an electrical connection between the fixed contact electrodes.

A technology for making the heat load on an electronic component attached to a target object smaller than before is provided. The electronic component includes a main body, the main body including an electronic component unit adapted to generate an electrical signal and click feeling in accordance with rotation of an engaged portion, a shaft support having a cylindrical portion to be inserted into a through-hole formed in the target object, and a retaining member; and a control shaft made of metal and capable of rotating the engaged portion, the control shaft being inserted into the cylindrical portion after a reflow soldering process of the target object is completed, and being engaged with the engaged portion. The control shaft inserted into the cylindrical portion is retained by the retaining member.

A technology for making the heat load on an electronic component attached to a target object smaller than before is provided. The electronic component includes a main body, the main body including an electronic component unit adapted to generate an electrical signal and click feeling in accordance with rotation of an engaged portion, a shaft support having a cylindrical portion to be inserted into a through-hole formed in the target object, and a retaining member; and a control shaft made of metal and capable of rotating the engaged portion, the control shaft being inserted into the cylindrical portion after a reflow soldering process of the target object is completed, and being engaged with the engaged portion. The control shaft inserted into the cylindrical portion is retained by the retaining member.

A control knob for an appliance includes a base having an axially-operated switch. An outer control assembly is rotationally and axially operable with respect to the base. An inner display assembly is rotationally fixed with respect to the base and axially fixed with respect to the outer control assembly. The inner display assembly is biased toward an extended state and is axially operable to a selection state that engages the axially operated switch.

A switch unit includes a switch body and a switch base. The switch body is subjected to a pull-up operation from a normal position to an operated position. The switch base supports the switch body such that the switch body is pivotable about an axis parallel to a first direction extending. The switch body includes an aesthetic wall disposed to extend along an opening, and an operation wall extending toward an inner side relative to the aesthetic surface from one side at an outer edge of the aesthetic wall, the one side extending in the first direction. The operation wall is located inward of an arc centered on the axis, the arc passing through the one side extending in the first direction. A shielding wall intersecting the first direction is provided at at least one of both side edges of the operation wall in the first direction.

A switch unit includes a switch body and a switch base. The switch body is subjected to a pull-up operation from a normal position to an operated position. The switch base supports the switch body such that the switch body is pivotable about an axis parallel to a first direction extending. The switch body includes an aesthetic wall disposed to extend along an opening, and an operation wall extending toward an inner side relative to the aesthetic surface from one side at an outer edge of the aesthetic wall, the one side extending in the first direction. The operation wall is located inward of an arc centered on the axis, the arc passing through the one side extending in the first direction. A shielding wall intersecting the first direction is provided at at least one of both side edges of the operation wall in the first direction.