40results about How to "High trigger sensitivity" patented technology

The invention relates to a key and a keyboard thereof. The key comprises a base plate, a key cap, a support device and a spring-back device, wherein the base plate is equipped with a trigger elastic arm and a trigger switch; the support device comprises a first support component and a second support component; the first support component is pivoted with the key cap and is in sliding connection with the base plate; the second support component is pivoted with the base plate and is in sliding connection with the key cap and is pivoted with the first support component in a crossing form; one of the first support component and the second support component is in contact with the elastic arm; the spring-back device is arranged between the key cap and the base plate and is used for driving the key cap to return; when the key cap is pressed by an external force, one of the first support component and the second support component relatively outward slides so as to drive the elastic arm to trigger the trigger switch; when the external force is released, the key cap is driven by the spring-back device to move back to the un-pressed position; one of the first support component and the second support component relatively inward slides so as to drive the elastic arm to separate from the trigger switch. The key provided by the invention can solve the problems of pressing hand feel of the key and the service life of the elastic component in the prior art.

A 1.55 μm single-photon coherent laser radar system device relates to the application field of laser technology. For the existing lidar, the detection method needs to improve the detection sensitivity, improve the detection distance capability of the seeker, improve the ability to obtain multi-dimensional information of the target, and improve the anti-jamming and target recognition capabilities. The present invention applies GM-APD focal plane detection to laser pulse coherent technology, adopts a Gm-APD heterodyne coherent scheme, and selects short-wave infrared wavelengths. This detection scheme has higher imaging detection sensitivity than coherent detection systems, and can simultaneously acquire The three-dimensional distance value of the target, the plane profile intensity value and the Doppler target velocity value can obtain more accurate target information differences under the three-dimensional angle of space, provide reliable three-dimensional space data for target recognition, tracking, etc., and have strong anti-interference in heterodyne detection On the basis of the ability, the detection sensitivity is improved to the single photon level, which is suitable for the field of weak light detection of long-range non-cooperative targets.

The invention discloses an elevator speed governor which comprises a rope sheave part, a machine frame and a ratchet wheel fixedly connected with the machine frame. The rope sheave part comprises a rope sheave, a centrifugal rod and a main rod. The middle of the main rod is fixedly installed in the center of the rope sheave, the rope sheave is installed on the machine frame through a bearing, and the rope sheave and the ratchet wheel are concentric; the two ends of the main rod are both provided with a centrifugal rod in a hinged mode, the portions, on the two sides of the center of the rope sheave, of the main rod are both provided with a self-locking hydraulic rod, the other end of each self-locking hydraulic rod is connected with the middle of the centrifugal rod, and a ratchet is fixedly connected with the end, away from the main rod, of the centrifugal rod and corresponds to the ratchet wheel.

The invention provides a novel protection design of a POS safety detecting switch. The POS safety detecting switch POS machine shell demounting-preventing part, a demounting-preventing conductor, a demounting monitoring switch and the demounting-preventing detecting bonding pad of a POS machine mainboard, wherein the demounting monitoring switch is located on the demounting-preventing detecting bonding pad; the demounting-preventing conductor comprises a conductive part and a sheet-shaped conductive elastic part, one end face of the sheet-shaped elastic part is a power connection face, the other end face of the sheet-shaped elastic part is a pressure-bearing face, and the conductive part is fixed on the power connection face of the elastic part through an insulating structure; when the demounting-preventing conductor is mounted on the demounting-preventing detecting bonding pad, the pressure-bearing face of the elastic part contacts with the POS machine shell demounting-preventing part, the elastic part deforms under the pressure of the POS machine shell demounting-preventing part to allow the conductive part on the elastic part to contact with the demounting monitoring switch so as to allow the demounting monitoring switch to be in a not-triggered state; when the pressure-bearing face of the elastic part does not bear pressure, the elastic part recovers to allow the conductive part to be separated from the demounting monitoring switch so as to trigger the demounting monitoring switch. By the novel protection design, the demounting monitoring function of a POS machine can be intensified, and illegal demounting can be prevented.

The invention provides household door and window glass with an anti-theft function, and relates to the technical field of anti-theft, the household door and window glass comprises a top piece, the top piece is of an H-shaped plate-shaped structure, the two sides of the rear portion of the top piece are of arc-shaped structures, the top piece is embedded into an embedding groove and a connecting groove, a connecting rod is arranged behind the top piece, and the connecting rod is connected with the top piece. Clamping grooves of wedge-shaped structures are formed in the inner sides of the connecting rods, and the connecting rods are inserted into the guide holes and the circular holes of the auxiliary rods. When knocked in use, a main body vibrates, a round rod pushes a triggering piece made of rubber, the triggering piece is pushed to be bent, a clamping plate is separated from the interior of a wedge-shaped groove of a connecting rod, a spring on the outer side of a stress rod is stressed and stretches, a connecting plate is stressed, a jacking piece is pushed through the connecting rod, and the jacking piece makes contact with a thief; according to the anti-theft door and window glass, the problem that the door and window glass cannot automatically trigger a pushing structure when encountering large vibration, and the thief cannot be pushed away is solved.

The upward travel protector for lift includes a clamping mechanism, a triggering mechanism and a resetting mechanism, and is held inside one box hinged to the pedestal. The power spring drives one end of the cam body to generate rotation moment, and cam surface presses the braking board to realize braking; the motion of the eccentric wheel and the rod generates reverse rotation torque to make the protector release; and the triggering force is reduced with the lever and the control board in special structure. The present invention can brake lift in case of accident overspeed during upward traveling. The present invention operates mechanically and has safe and reliable braking, greatly reduced triggering force, timely and accurate triggering, and compact structure. The present invention is also suitable for the braking of other system with steel cable.

The invention discloses an automatic tension adjusting system for an elevator wire rope. The system comprises a first cross beam (1), wherein first sliding chutes (2) are formed in the first cross beam (1), first high-strength springs (3) are arranged in the first sliding chutes (2), a first moving beam (4) is fixed on the first high-strength springs (3), and a lower pulley block (6) consisting of multiple lower pulleys (5) is arranged on the first moving beam (4); a pulley upper beam (7) is arranged above the first cross beam (1), an upper pulley block (9) consisting of multiple upper pulleys (8) is arranged on the pulley upper beam (7), and the upper pulley block (9) and the lower pulley block (6) are wound with the elevator wire rope (10). The automatic tension adjusting system for the elevator wire rope has the characteristics of high trigger sensitivity, quick response and rapid tension compensation, and further, the system can supply higher lifting power with smaller travel change so as to effectively tension the wire rope.

The invention relates to a key and a keyboard thereof. The key comprises a base plate, a key cap, a supporting unit and a spring-back unit. The base plate includes a triggering elastic arm and a triggering switch. The support unit comprises a first support piece and a second support piece, the first support piece is pivoted to the key cap and connected to the base plate in a slidable manner, the second support piece is pivoted to the base plate, connected to the key cap in the slidable manner, and pivoted to the first support piece in an intersected manner, and one of the first and second support pieces abuts against the triggering elastic arm. The spring-back device is arranged between the key cap and the base plate to drive the key cap to return to an original position. When the key cap is pressed by an outside force, one of the first and second support pieces slides outwardly relatively so that the triggering elastic arm triggers the triggering switch. When the outside force is released, the spring-back device drives the key cap to move back to a not-pressed position, one of the first and second support pieces slides inwardly relatively so that the triggering elastic arm is separated from the triggering switch. According to the invention, the sensitivity and pressing feeling of the key are improved, circuit damage is avoided and the service life is prolonged.

The invention discloses an electronic device, comprising a casing, a transmission mechanism and an induction button; wherein: the casing is provided with an inner cavity, the transmission mechanism comprises a first rack, a second rack and a gear mechanism, the first rack, the second rack The rack, the gear mechanism and the sensing button are all arranged in the inner cavity, the gear mechanism is rotatably arranged in the inner cavity, the casing includes a pressing area, the first rack is connected with the inner surface of the pressing area, and the first rack is connected to the gear The mechanism is meshed, the second rack is meshed with the gear mechanism, and the second rack is connected with the induction button; when the pressing area is subjected to external force, the first rack drives the gear to rotate, and the second rack rotates with the gear mechanism Movement occurs to drive the sensing button to switch from the first state to the second state. The above solution can solve the problem of low trigger sensitivity of the sensing button in the background art.

The invention discloses an automatic fishing device and an automatic fishing rod with the same. A take-up pulley of the automatic fishing device is assembled with an automatic take-up mechanism, the take-up pulley is arranged on an automatic machine seat, the upper automatic machine seat is provided with a directional clip, and the front automatic machine seat is sequentially provided with a trigger mechanism, an alignment mechanism and an automatic rod I; the automatic rod I and the directional clip are rotationally arranged on the automatic machine seat; one end of the automatic rod I is matched with the tooth end of a large ratchet wheel in the automatic take-up mechanism, while the other end is matched with the trigger mechanism; and one end of the directional clip is matched with the tooth end of a small ratchet wheel. The upper end of the automatic machine seat in the automatic fishing device of the automatic fishing rod is provided with a diverter which is connected with a rod handle, while the lower end is provided with a positioning rod. The automatic fishing device has the advantages of simple operation, safety, reliability, high trigger sensitivity, prevention of direction limit of a line taken away by a fish and high fishing rate; and the automatic fishing rod provided with the automatic fishing device has the advantage of preventing winding.

The invention discloses a multi-position wall switch, relates to the technical field of switches and is intended to solve the problem that a multi-position wall switch of the prior art has poor key sensitivity and is easily triggered by mistake. The multi-position wall switch of the invention comprises a fixing frame provided with a fixing port, a PCB (printed circuit board) is fixed in the fixing port, a front panel covers the fixing frame, the front panel is larger than the fixing port in area, the multi-position wall switch also comprises a plurality of switch keys, each switch key is correspondingly provided with a backlight module including a backlight panel fixed to the front panel, the arrangement range of the backlight panels on the front panel is wider than the projection range of the fixing port on the front panel. The multi-position wall switch is intended to provide improved key sensitivity and prevent mistaken trigger.