A work machine control system includes an operational input portion that accepts an input operation to change a position of acceptance, maintains the position of acceptance when there is no input operation accepted, and provides an operation command in accordance with change in position of acceptance, an operational force providing portion that provides a plurality of operational forces in correspondence with an amount of change of the position of acceptance, a transmission portion that changes a speed of rotation provided from a drive source to transmit resultant rotation to a drive wheel, and a controller that controls the transmission portion based on a travel speed of the drive wheel in accordance with the operation command.

A work machine operation apparatus that appropriately provides an operational feeling to an operator is provided. A base includes a plurality of first holes each having a first dimension. The base includes a plurality of second holes each having a second dimension different from the first dimension. An interval at which two adjacent first holes are arranged is different from an interval at which two adjacent second holes are arranged. A contact portion is in contact with the base. The contact portion can move relatively to the base and can selectively be engaged with any one of the plurality of first holes and the plurality of second holes. A biasing portion applies to the contact portion, biasing force in a direction in which the contact portion is brought in contact with the base. Upon accepting an input operation, an operational input portion moves the contact portion relatively to the base.

A rotational operation unit includes a rotational operation member that is rotatable, an annular magnet configured to integrally rotate with the rotational operation member, and a magnet holding member configured to rotatably hold the magnet and including an undulated portion configured to generate a click sense as the rotational operation member rotates. The magnet includes a positioner configured to determine a position relative to the magnet holding member.

An input device includes: an operation part being slidable in a first direction along a reference plane and in a second direction along the reference plane; and a slide detector detecting that the operation part slides. The slide detector includes a rocking body and a rocking motion detector, the rocking body is inclined with respect to the reference plane in accordance with a sliding movement of the operation part, and the rocking motion detector detects that the rocking body is inclined.

An operation device includes a scroll wheel, a portion of which projects from an opening of an operation surface. The scroll wheel is configured to be rotated by an operator. The scroll wheel includes a ring member that is formed by a light transmissive member, which is configured to transmit light. The operation device includes: a light source that is configured to generate light for nighttime illumination; a wheel illumination light guide member that is configured to guide the light, which is outputted from the light source, to the scroll wheel; and a metal film that is formed at an inner peripheral surface of the ring member.

An operation device includes a scroll wheel, a portion of which projects from an opening of an operation surface. The scroll wheel is configured to be rotated by an operator. The scroll wheel includes a ring member that is formed by a light transmissive member, which is configured to transmit light. The operation device includes: a light source that is configured to generate light for nighttime illumination; a wheel illumination light guide member that is configured to guide the light, which is outputted from the light source, to the scroll wheel; and a metal film that is formed at an inner peripheral surface of the ring member.

Disclosed herein is a leakage protector, which includes a housing. A base plate and a brush are arranged in the housing. A first conducting strip and a second conducting strip spaced apart are arranged on the base plate. The brush is provided with contact pins to contact the first conducting strip and the second conducting strip, respectively. The second conducting strip can generate different analog voltages, and the first conducting strip is configured to transmit different analog voltages to a microprocessor. A user can drive the brush to move through an actuating part, and set the power-on time of the leakage protector in one step.

A control device capable of providing rotational damping through a magnetic force is provided directly at the base of an electronic product and includes a supporting member, an adjusting member, and two magnetic members. The supporting member is provided at the base. The adjusting member is rotatably provided on the supporting member. The adjusting member has a bottom portion corresponding to a switch pre-installed in the base. The adjusting member further has a head portion outside the base. The two magnetic members are provided on the supporting member and the adjusting member respectively. The two magnetic members generate a magnetic force therebetween and thereby change the rotational damping between the supporting member and the adjusting member.

A control device capable of providing rotational damping through an elastic force is provided directly at the base of an electronic product and includes an adjusting member and an elastic member. The adjusting member is rotatably provided at the base. The adjusting member has a bottom portion corresponding to a switch provided in the base. The adjusting member further has a head portion outside the base. The elastic member is provided between the adjusting member and the base. The elastic force of the elastic member acts between the head portion of the adjusting member and the base to change the rotational damping to which the adjusting member is subjected.

Base assemblies for knob on display (KoD) devices and related systems and devices are disclosed. A base assembly for a KoD device includes a base portion for positioning between one or more electrode pads and a touch screen of a touch screen device. The base portion includes electrically insulating material. The base portion further includes an exterior surface to face the touch screen, an interior surface to face the one or more electrode pads, and extender pads including electrically conductive material. The extender pads extend through the base portion from the interior surface to the exterior surface.