461results about "Contact mechanisms" patented technology

A backlight module is configured to illuminate at least one key cap. The backlight module includes a light emitting unit, a light guide plate and a lighting board. The light guide plate has a light guide plate hole for accommodating the light emitting unit. The lighting board has at least one pair of pads connected to the light emitting unit respectively. The lighting board includes a first reflective layer surrounding the light emitting unit and at least partially covering the at least one pair of pads. Each of the at least one pair of pads has a plurality of branches and at least one hollow area. The at least one hollow area overlaps with at least one part of the light emitting unit. At least one lighting area is located between the at least one pair of pads.

A lighting board for supporting at least one keycap is provided. The lighting board includes a substrate having an insulation surface, a plurality of openings penetrating through the substrate, and a plurality of coupling members disposed on the substrate and configured to directly or indirectly connect the at least one keycap, a lighting circuit disposed on the insulation surface at a side opposite to the coupling members, an illuminant electrically connected to the lighting circuit, and a protective layer disposed on the insulation surface and covering the lighting circuit.

A backlight module for a lighting keyboard having a specific function key comprises a lighting board, a light guide panel and a shielding sheet. The shielding sheet, the light guide panel and the lighting board are stacked from top to bottom. The lighting board has first and second light emitting units. The light guide panel has first and second light guide holes. The first light emitting unit is in the first light guide hole. The second light emitting unit is in the second light guide hole. The shielding sheet has a blocking portion. The blocking portion overlaps in projection with the first light emitting unit and the second light emitting unit. The light guide panel has a light guide panel slot. The light guide panel slot overlaps in projection with the blocking portion and a boundary of a keycap projection area of the specific function key.

A push-button (100) includes a plunger sub-assembly (10) that comprises a translation-to-rotation converting part (5), a latch part (6) and a latch spring element (56). The latch spring element connects the latch part to the translation-to-rotation converting part so that rotation of the translation-to-rotation converting part caused by a user pressing the push-button drives the latch part into a position where said latch part abuts a relief portion in the internal surface of a casing (30) of the push-button. Such arrangement of the plunger sub-assembly avoids that numerous repeated locking operations damage to the latch part and / or relief portion. Lifetime of the push-button is thus increased.

An apparatus for use in a power delivery system, the apparatus comprising: a DC circuit breaker having first and second terminals and configured to automatically switch from a closed state to an open state during an overcurrent condition; a disconnector switch in series with the DC circuit breaker, the disconnector switch having a first terminal for connecting to a first polarity terminal of a DC power supply, a second terminal for connecting to a second polarity terminal of the DC power supply and a common terminal connected to the first terminal of the DC circuit breaker, the disconnector switch having at least a first position in which the first terminal is connected to the common terminal and a second position in which the second terminal is connected to the common terminal; and an interlock mechanism coupled to the DC circuit breaker and the disconnector switch, the interlock mechanism configured to disable the DC circuit breaker from automatically switching from the closed state to the open state during the overcurrent condition when the disconnector switch is in the second position.

An illuminated keyswitch structure includes a base plate, a keycap, and a light-emitting die package. The light-emitting die package is disposed to illuminate the keycap through the base plate. The light-emitting die package comprises a warm color temperature light-emitting die and a cold color temperature light-emitting die, and the light-emitting die package extends along an arrangement direction. Each of the two light-emitting dies has a short side arranged adjacent to each other, with a long side of each of the two light-emitting dies facing a same direction and configured proximate to each other. A gap between the two adjacent short sides of the two light-emitting dies is not greater than either one of the two adjacent short sides of the two light-emitting dies.

A backlit circuit board for supporting a keycap is provided. The backlit circuit board includes a substrate having a plurality of openings penetrating through the substrate and a plurality of coupling members disposed on the substrate and configured to directly or indirectly connect the keycap, a switch circuit disposed on the substrate and having switch pads for triggering a keyswitch signal in response to the keycap moving toward the substrate, a lighting circuit disposed on the substrate at a side opposite to the coupling members, and an illuminant electrically connected to the lighting circuit, wherein vertical projections of the switch pads and the illuminant fall within a range surrounded by the plurality of coupling members.

The invention provides a keyboard and electronic equipment. The keyboard comprises a shell, a circuit board and a plurality of keys, the circuit board is installed on the shell, the keys are installed on the circuit board, and each key comprises an unpressed state and a triggered state; the plurality of keys comprise a first key and a second key, and when the first key and the second key are both in an unpressed state, an included angle a between a first central axis and a second central axis is greater than or equal to 0 degree and smaller than or equal to alt; m1; wherein 0 degree lt; m1 is smaller than or equal to 10 degrees. At the moment, the top surface of the first key and the top surface of the second key are roughly the same in orientation. When the first key and the second key are both in the triggered state, the included angle between the first central axis and the second central axis is b, and b is larger than or equal to M1. At the moment, the top surface of the first key and the top surface of the second key face different directions. Therefore, the keyboard can conform to ergonomics, the hand feeling is good after long-term use, and the space utilization rate of the keyboard can be improved.

A laptop computer includes a body, a bracket disposed in the body, a latching member movably disposed on the bracket, a first key module detachably assembled onto the bracket, and a second key module disposed on the bracket. A part of the first key module is located on a moving path of the latching member. The latching member is adapted to be driven by an external force to push the part of the first key module away from the bracket.

A backlit circuit board for supporting a keycap is provided. The backlit circuit board includes a substrate having a plurality of ribs configured to define a plurality of openings penetrating through the substrate and a plurality of coupling members disposed on the substrate and configured to directly or indirectly connect the keycap, a lighting circuit disposed on the substrate at a same side as the coupling members and extending over the plurality of ribs, and an illuminant electrically connected to the lighting circuit and disposed on one of the plurality of ribs, wherein the illuminant vertically corresponds to a light impermeable region of the keycap, and a vertical projection of the light impermeable region at least partially overlaps the plurality of ribs.

The invention relates to the technical field of power supply equipment, and particularly discloses a grounding opening and closing device and method based on flexible tightening, and the device comprises a data collection module, a path planning module, a height self-adaption module, a vibration suppression module and a collaborative decision module. The data acquisition module is fused with a visual sensor through a laser radar to generate obstacle three-dimensional point cloud data and high-voltage switch cabinet positioning coordinates; the path planning module generates an obstacle avoidance path based on a genetic algorithm, encodes target coordinates, and drives the chassis of the mobile robot to autonomously avoid obstacles; the height self-adaptive module optimizes hydraulic parameters of the lifting platform, and the screw rod is combined to drive the sliding table module to perform closed-loop feedback so as to realize high-precision positioning of the grounding brake, and through optimization and closed-loop control of the multi-module genetic algorithm, the problems of low manual operation efficiency, insufficient equipment vibration suppression and poor positioning precision are solved; and high-efficiency positioning, low vibration and high safety of grounding switch opening and closing operation are realized in a complex power distribution environment.

Disclosed is a device comprising a housing that comprises components; a cover configured to be positioned on the housing to restrict access to the components when the cover is in the closed position; a capacitor and a fuse, the capacitor and fuse being dimensioned so that the fuse blows when the capacitor discharges through the fuse; a capacitor charging circuit configured to charge the capacitor when the device is powered up; a discharge circuit for discharging the capacitor through the fuse, said discharge circuit comprising a first switch cooperating with a part integral with the cover in order to prevent the discharging of the capacitor when the cover is in the closed position; and to allow the capacitor to discharge through the fuse when the cover is in the open position.

An electrically driven fastener structure includes a body, a fastening unit and a wire. The body has a first assembly portion. The fastening unit has a second assembly portion corresponding to the first assembly portion. The wire is adapted to pass a current and to pass through the first assembly portion or the second portion to form a magnetic switch using the first assembly portion or the second assembly portion, so as to drive the magnetic switch based on on or off or strong or weak of the current, or to drive the magnetic switch based on on or off or strong or weak of a magnetic force.

A safety switch for controlling the access to industrial machines or plants comprises a switching device (2) housing switching means and an actuator device (3) having an operating pin (8) to interact with the switching means upon the opening / closing of the access, a locking / unlocking mechanism (14) housed in the switching device (2) and provided with a locking pin (15) movable between a locking position and an unlocking position of the access, an operating pin (8) associated with the actuator device (3) to interact with the locking pin (15) to hold the actuator device (3) fastened to said switching device (2), which, in turn, houses a locking element with controlled deformation, mechanically connected to the locking pin (15) and sized to deform plastically upon the application on the locking pin (15) of a deformation stress higher than a predetermined threshold value.

An illuminant board includes a substrate, a circuit layer, a light guide plate, a plurality of microstructures and at least one illuminant. The substrate defines at least one key projection. The circuit layer is disposed on the substrate. The circuit layer includes at least one high-potential main conductive wire and at least one low-potential main conductive wire. The light guide plate is disposed opposite to the circuit layer. The microstructures are located between the light guide plate and the substrate. The illuminant is coupled to the circuit layer. The illuminant provides a luminous light inletting into the light guide plate, and a path of the luminous light is guided by the microstructures. The high-potential main conductive wire and / or the low-potential main conductive wire extend and pass through the key projection. Orthographic projections of the microstructures are located between the high-potential main conductive wire and the low-potential main conductive wire.

A backlight keyswitch includes a keyswitch body, a board connected to the keyswitch body, a backlight module and a membrane disposed between the keyswitch body and the board. The backlight module is disposed under the board and includes a backlight circuit board, a light-blocking sheet, a first reflecting ink layer, and a light guide plate disposed between the light-blocking sheet and the backlight circuit board. The first reflecting ink layer is formed on the light-blocking sheet and located above the backlight circuit board, for at least partially reflecting light emitted by the backlight circuit board back to an optical microstructure in the light guide plate to prevent center symbols of the keyswitch body from being too bright, such that light can be incident to the keyswitch body via scattering of the optical microstructure to increase brightness of side symbols of the keyswitch body.

A safety switch for controlling access to an industrial machine or plant comprises a switching device (2) accommodating a switching means and an actuator device (3), the switching device (2) having an operating pin (8) that interacts with the switching means when opening and closing the access; a locking / unlocking mechanism (14) accommodated within the switching device (2) and provided with a locking pin (15) movable between a locked position and an unlocked position of the access; and an operating pin (8) associated with the actuator device (3) and interacting with the locking pin (15) to hold the actuator device (3) in a state fixed to the switching device (2). The operating pin (8) further houses a locking element with controlled deformation mechanically connected to the locking pin (15), and the locking element with controlled deformation is sized to plastically deform when a deformation stress higher than a predetermined threshold value is applied to the locking pin (15).

An apparatus (5) includes a circuit breaker (10), a switch (20), a first signal line (30), a first current connection line (33), and a first power port (35). The circuit breaker (10) comprises a first circuit breaker terminal (11) and a second circuit breaker terminal (12). The switch (20) is embodied as a disconnector or contactor and comprises a first contact terminal (21) and a second contact terminal (22). The first signal line (30) is coupled to the circuit breaker (10) and to the switch (20). A first current connection line (33) is coupled to the first circuit breaker terminal (11) and to the first contact terminal (21). The first power port (35) is coupled to the first current connection line (33).

A lighting keyboard comprises a first key and a second key, with a gap region between them. A backlight module for the lighting keyboard comprises a lighting board having a light emitting unit, a light guide panel, and a shielding sheet having a light-reducing pattern corresponding to the first key, which are stacked from top to bottom. The backlight module has a colored material layer on the shielding sheet or the light guide panel and vertically overlapping with the gap region. A light of the light emitting unit is guided by the light guide panel to pass through the light-reducing pattern and form a first color light upward from an inner outlet of the first key, and further to pass through the colored material layer and form a second color light different from the first color light upward from an inner outlet and a boundary of the second key.

The invention relates to a safety switch (1) with an input / output structure and means for generating a switching signal. Depending on the switching signal, the operation of a system can be enabled. The input / output structure provides connection means for connecting a start button (5). Manual actuation of the start button (5) generates an acknowledgement signal for enabling the system. The connection means are automatically detected in the safety switch (1).

A key structure includes a base plate, a keycap, a connecting assembly, a protrusion and a limiting member. The connecting assembly includes a first frame and a second frame pivotally connected to each other. Two opposite ends of the first frame are movably connected to the base plate and the keycap, respectively, and two opposite ends of the second frame are movably connected to the base plate and the keycap, respectively, to drive the keycap upward and downward relative to the base plate. The protrusion is disposed on a sidewall of the first frame or a sidewall of the second frame. The limiting member corresponds in position to the protrusion. When the keycap is at a maximum height, the protrusion abuts against the limiting member.

A backlit-module-embedded illuminated keyswitch structure includes a baseplate, a mask film disposed below the baseplate and having a first coating configured to substantially reflect a light, a light guide sheet disposed at one side of the mask film and having a light source hole, a reflective layer disposed at one side of the light guide sheet opposite to the mask film and having an opening communicating with the light source hole, a top glue configured to connect the mask film and the light guide sheet around the light source hole, and a bottom glue configured to connect the light guide sheet and the reflective layer around the light source hole. The first coating covers the light source hole. In a stacked direction of the mask film, the light guide sheet, and the reflective layer, at least one of the top glue and the bottom glue overlaps the first coating.

A manual call point for a fire alarm system, the manual call point comprising: an operating element 18, wherein a physical movement of the operating element 18 will trigger an alarm condition of the manual call point; at least two switch devices 12, 14, 16. Each switch device 12, 14, 16 is arranged to complete or break a circuit in response to the physical movement of the operating element 18. At least one of the switch devices 12, 14, 16 is a contactless device 12, 14 and the corresponding circuit includes an electromagnetic circuit that is completed or broken without mechanical contact from the operating element 18.

The safety device comprises a safety switch and an actuator which are designed to be associated with the movable guard and interact with each other when the movable guard is opened and closed. The safety switch comprises a switching device designed to switch between an active state and an inactive state, a locking mechanism for locking the actuator in contact with the safety switch, a control unit connected to the locking mechanism, and the switching device for controlling the locking mechanism. The safety switch also includes a primary reset member for transmitting a primary reset signal to the control unit.

The invention relates to the technical field of power control, in particular to a linkage type three-phase phase selection circuit breaker switching system, which comprises a control device, an A-phase opening and closing operation mechanism, and a B-phase opening and closing operation mechanism and a C-phase opening and closing operation mechanism which are positioned on two sides of the A-phase opening and closing operation mechanism, an A-phase driving mechanism is arranged on the A-phase opening and closing operation mechanism; a first cam is arranged below the B-phase opening and closing operation mechanism, and a second cam is arranged below the C-phase opening and closing operation mechanism. A first synchronizing mechanism is arranged between the A-phase opening and closing operation mechanism and the first cam, and a second synchronizing mechanism is arranged between the A-phase opening and closing operation mechanism and the second cam; when a control device controls an A-phase driving mechanism to drive an A-phase opening and closing operation mechanism to perform closing / opening, a first cam and a second cam are simultaneously driven through a first synchronizing mechanism and a second synchronizing mechanism; therefore, the B-phase opening and closing operation mechanism and the C-phase opening and closing operation mechanism are switched on / off at the same time after the A-phase opening and closing operation mechanism is switched on / off within the specified delay time. And the reliability of the system is improved while the inrush current is effectively inhibited.

The utility model discloses a two-path signal neutral gear switch for an automobile, which comprises a switch shell, a plug assembly is arranged at the bottom end of the switch shell, a top rod is arranged at the top end of the switch shell, the plug assembly comprises a plug base and a plug assembly, and the plug assembly comprises four binding posts, a pair of static sheet supports, a pair of conductive springs and a double-plug moving sheet. A pair of binding posts is respectively connected with a static sheet support, a static sheet contact is installed on the static sheet support, the other pair of binding posts is respectively connected with a guide spring, a pair of red copper sheets and a pair of moving sheet contacts are arranged on the upper surface of the double-insertion moving sheet, a pair of conductive insertion rods are arranged on the lower surface of the double-insertion moving sheet, one end of each red copper sheet is connected with the corresponding moving sheet contact, and the other end of each conductive insertion rod is connected with the corresponding moving sheet contact. The other end of the red copper sheet is connected with the conductive insertion rod, the conductive insertion rod is connected with the top end of the conductive spring in an inserted mode, the movable sheet contact makes contact with the static sheet contact, the bottom end of the ejector rod is close to the upper surface of the double-insertion movable sheet, two paths of on-off signals which do not interfere with each other are sent out through communication of the pair of rigid contacts, and the situation of virtual connection of the contacts is avoided.

A key assembling structure comprises a scissor type connecting assembly and a bottom plate. The scissor-type connecting assembly comprises an inner frame and an outer frame which are arranged to swing relatively, the inner frame is provided with a first shaft, and the outer frame is provided with a second shaft. The bottom plate is arranged below the scissor type connecting assembly and is provided with a group of first clamping hooks corresponding to the first shaft and a group of second clamping hooks corresponding to the second shaft, and the group of first clamping hooks or the group of second clamping hooks comprise two edge clamping hooks and at least one auxiliary clamping hook; the clamping parts extend outwards and are used for being clamped with the two edge parts and the middle part of the corresponding first shaft or second shaft, and the middle part is arranged between the two edge parts.