A click mechanism for a switch includes a button that is operable by a user, a click generation surface formed on the button or a body to which the button is coupled, an urging mechanism, and a pusher pushed against the click generation surface by the urging force of the urging mechanism and slidable on the click generation surface in response to operation of the button. The pusher is configured to apply tactile force to the button when sliding on the click generation surface. The click generation surface includes at least one groove.

The invention relates to a switch for an electrical device, in particular for an electrical tool, comprising a slide control (20) for setting a rotational speed of the electrical device, a switch housing, and at least one circuit board (30) arranged in the switch housing for holding electrical components of the slide control. According to the invention, a movably supported operating element (21.4) of the slide control is inserted into a contact chamber (12) of the switch housing in a sealed manner through a first feed-through (11) and is led out of the contact chamber in a sealed manner through a second feed-through (44.1) in all adjustment positions of the operating element. Thus, a switch that ensures reliable function even under ambient conditions of high contamination is provided.

The invention relates to a switch for an electrical device, in particular for an electrical tool, comprising a slide control (20) for setting a rotational speed of the electrical device, a switch housing, and at least one circuit board (30) arranged in the switch housing for holding electrical components of the slide control. According to the invention, a movably supported operating element (21.4) of the slide control is inserted into a contact chamber (12) of the switch housing in a sealed manner through a first feed-through (11) and is led out of the contact chamber in a sealed manner through a second feed-through (44.1) in all adjustment positions of the operating element. Thus, a switch that ensures reliable function even under ambient conditions of high contamination is provided.

In a power seat operation device, a micro switch is attached inside a dial that is rotatably provided to a side face of a power seat. An opening is formed inside the dial, with an operation portion of a knob to operate the micro switch inserted through the opening. There is accordingly a possibility that liquid might infiltrate into the dial, however a channel is formed inside the dial by the dial and the knob. The channel lets liquid flow downward to the lower side of the micro switch so as to discharge the liquid to outside the dial in cases in which liquid has infiltrated into the dial through the opening in a state in which the opening is positioned at the upper side of the micro switch. The channel is partitioned from the micro switch, enabling flow of liquid to the micro switch to be prevented or suppressed.

In a power seat operation device, a micro switch is attached inside a dial that is rotatably provided to a side face of a power seat. An opening is formed inside the dial, with an operation portion of a knob to operate the micro switch inserted through the opening. There is accordingly a possibility that liquid might infiltrate into the dial, however a channel is formed inside the dial by the dial and the knob. The channel lets liquid flow downward to the lower side of the micro switch so as to discharge the liquid to outside the dial in cases in which liquid has infiltrated into the dial through the opening in a state in which the opening is positioned at the upper side of the micro switch. The channel is partitioned from the micro switch, enabling flow of liquid to the micro switch to be prevented or suppressed.

A method of non-rotatably securing a target to a shaft extending along a longitudinal axis within an enclosed proximity switch assembly is described. The target support at least one target magnet and a hub having a body portion extending along the longitudinal axis. The body portion includes an outer surface and a shaft aperture extending along the longitudinal axis, and further includes at least one threaded body aperture extending from the outer surface to the shaft aperture. The shaft is inserted into the shaft aperture, and a set screw is inserted into one of the body apertures. A torque is applied to the set screw to threadably engage the set screw with the one of the body apertures such that a distal end of the set screw contacts an outer surface of the shaft. The set screw is sealed within the body aperture with a high-temperature potting.

A method of non-rotatably securing a target to a shaft extending along a longitudinal axis within an enclosed proximity switch assembly is described. The target support at least one target magnet and a hub having a body portion extending along the longitudinal axis. The body portion includes an outer surface and a shaft aperture extending along the longitudinal axis, and further includes at least one threaded body aperture extending from the outer surface to the shaft aperture. The shaft is inserted into the shaft aperture, and a set screw is inserted into one of the body apertures. A torque is applied to the set screw to threadably engage the set screw with the one of the body apertures such that a distal end of the set screw contacts an outer surface of the shaft. The set screw is sealed within the body aperture with a high-temperature potting.

A rotary switch (4) comprising a switch body (8) which identifies an inner space (10) which rotatably houses a shaft (12) operatively connected to an actuator device external to the switch (4), a distribution valve (32) positioned outside said inner space (10), a pneumatic connector (36) and at least one control means (40), such as a solenoid, operatively connected to the pneumatic connector (36), arranged in the inner space (10). The control means (40) is operatively connected to the external device, the distribution valve (32) is operatively connected to the control means (40) by means of the pneumatic connector (36). Advantageously, the pneumatic connector (36) defines at least one connection channel (44) placing the distribution valve (32) in fluidic connection with the control means (40), wherein inside the connection channel (44) at least one anti-explosion means (52) is inserted, positioned coaxially to the connection channel (44) so as to reduce the through cross-section (56) thereof by a predefined length of the connection channel (44), said through cross-section (56) being confined on an outer circular crown of the connection channel (44), delimited between an inner side wall (60) of the connection channel (44) and an external lateral wall (64) of the anti-explosion means (52).

A rotary switch (4) comprising a switch body (8) which identifies an inner space (10) which rotatably houses a shaft (12) operatively connected to an actuator device external to the switch (4), a distribution valve (32) positioned outside said inner space (10), a pneumatic connector (36) and at least one control means (40), such as a solenoid, operatively connected to the pneumatic connector (36), arranged in the inner space (10). The control means (40) is operatively connected to the external device, the distribution valve (32) is operatively connected to the control means (40) by means of the pneumatic connector (36). Advantageously, the pneumatic connector (36) defines at least one connection channel (44) placing the distribution valve (32) in fluidic connection with the control means (40), wherein inside the connection channel (44) at least one anti-explosion means (52) is inserted, positioned coaxially to the connection channel (44) so as to reduce the through cross-section (56) thereof by a predefined length of the connection channel (44), said through cross-section (56) being confined on an outer circular crown of the connection channel (44), delimited between an inner side wall (60) of the connection channel (44) and an external lateral wall (64) of the anti-explosion means (52).

Rotary switches and associated methods. A rotary switch can include one or more arcuate passages which are prone to ingress of particulate or liquid contaminants. A gasket, a rib, and/or a lubricant reservoir can be provided in the arcuate passages for blocking ingress of contaminants to an interior of the switch.