157 results about "Reset button" patented technology

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, which comprises a reset button, a tripping rod, a tripper, a control module and a switch contact system. When the reset button is at the hasp position or the release position, the switch contact system is switched on or switched off; a switch moving contact mechanism of the switch contact system comprises a contact support, a switch moving contact and a switch moving contact spring; in the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to enable the switch moving contact to be in initial contact with the switch static contact, and then the contact support and the switch moving contact are driven to move relatively to enable the switch moving contact spring to store energy; in the process that the reset button moves to the tripping position, the switch moving contact spring releases energy to enable the switch moving contact and the contact support to recover limiting fit; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

During operation, an electronic device may receive, associated with a computer, a packet or a frame that includes a dynamic power reset pattern, where the dynamic power reset pattern specifies temporal pattern of power resets. Then, the electronic device may detect multiple power resets, where a given detected power reset in the detected power resets involves activation of a power reset button in the electronic device. Moreover, the electronic device may compute a detected power reset pattern, where the detected power reset pattern includes a detected temporal pattern of detected power resets. Next, the electronic device may compare the dynamic power reset pattern and the detected power reset pattern. Furthermore, based at least in part on a result of the comparison, the electronic device may at least selectively provide, to the computer, the result of the comparison.

The invention provides an electrical button, which has a accommodating groove with a accommodating cavity, an elastic fixing member and a rigid pressing member are arranged on the accommodating groove; the elastic fixing member has an upper ring cover and a lower ring cover, forming a first clamping groove; the upper ring cover and the lower ring cover The outer periphery of the ring cover is connected by the cap wall, and the lower end of the cap wall is clamped in the connecting groove of the side wall of the receiving groove; the outer periphery of the lower end of the cap wall is provided with an upper fixing edge and a lower fixing edge to form a second clamping groove; The first clamping plate in the first clamping groove, the first clamping plate is provided with a pressing plate; the first clamping plate is provided with a guide post, and the lower end of the guide post is provided with a moving contact; the bottom surface of the receiving cavity is provided with a first static contact and the second static contact; the outer guide post is provided with an elastic piece, the upper end of the elastic piece is provided with an upper fixed end, and the lower end is set with a lower fixed end; the upper fixed end is clamped in the upper fixing groove of the first clamping plate, and the lower fixed end is clamped Connected to the lower fixing groove in the receiving cavity. The invention realizes double reset through the cap wall and the elastic member, so as to avoid the push button from being dead; the sealing performance is good, and dust and water are prevented from entering.

The utility model relates to the technical field of relay verification, in particular to a portable time relay verification circuit and device. Comprising a timer, a first intermediate relay, a second intermediate relay, a first selection switch, a second selection switch, a third selection switch, a direct current voltmeter, a power switch, a start button, a reset button, a power indicating lamp and a power module. According to the utility model, through different combinations of the three selection switches, verification of eight different types of time relays is realized by using the two intermediate relays, the structure is simple, the integration is good, the cost is low, and the verification capability of the time relay during the ship navigation period is improved.

The invention discloses a PLC-based optical cable sheath bump on-line detection alarm method and system, and the method comprises the steps: presetting a permissible outer diameter error, enabling an optical cable sheath to enter a bump test device center through a cable stabilizing device after the optical cable sheath is extruded and cooled, resetting the optical cable through a meter length reset button when the optical cable is normal and meets the requirements, and providing a trigger signal to obtain a standard size, effective optical cable detection is started, the defect detector feeds back data of the detected cable diameter to the field PLC in real time, the data is compared with a permitted error range limit value for calculation, a bulge alarm pulse is sent out when the data exceed an upper limit, a narrow-neck alarm pulse signal is sent out when the data is smaller than a lower limit, then the data are transmitted to the main control PLC through the field PLC, the meter counting length is locked, and the defect position is determined; and complete data of the whole optical cable is reserved. Through the mode, the instantaneous defects on the surface of the optical cable can be captured in real time, missing detection caused by response lag or overlarge sampling interval is avoided, accurate synchronization of defect positions and meter counting information is achieved, and accurate and comprehensive quality monitoring under high-speed production is guaranteed.

The utility model relates to the field of low-voltage electric appliances, in particular to a power supply control mechanism, a reset button of the power supply control mechanism is in hasp fit with a tripping rod and in transmission fit with a tripper, a control module is electrically connected with the tripper through a connecting circuit, and a switch contact system is connected in series in the connecting circuit; when the reset button is at the hasp position / tripping position, the switch contact system is switched on / off; in the switch contact system, a switch moving contact mechanism is linked with a reset button, and a switch static contact is provided with a first position and a second position. In the process that the reset button moves to the hasp position, the switch moving contact mechanism is firstly driven to move to make initial contact with the switch static contact located at the first position, and then the switch static contact is driven to move to the second position through the switch moving contact mechanism. When the reset button moves to the tripping position, the switch static contact is reset to the first position; according to the power supply control mechanism, the current-carrying capability and the arc-resistant capability of the switch contact system are good.

Provided is a pneumatic fast-push game console, which includes an upper housing, a rubber ring belt, and a lower housing. When the game console is in use, a user presses a pressing plate with a finger to block a ventilation hole; in addition, the upper housing and the lower housing are pressed, the air pressure in a closed cavity is increased, so that reset buttons recessed into the cavity are reset, which enables each reset button to be rapidly reset. In the reset operation or when being pressed, the game console has no unsmoothness or jam in the reset operation that would be caused due to friction, and a good game experience is offered.

The invention relates to the technical field of power system energy storage equipment testing, in particular to a small and medium-sized industrial and commercial energy storage cabinet twin-trawling testing system which comprises a main loop, a secondary control loop and an anti-countercurrent detection unit, the main loop comprises double testing loops and four sets of alternating current contactors, and multi-machine twin-trawling testing frameworks such as one-to-one, one-trawling-two and one-trawling-three can be flexibly combined; independent switching between grid connection and grid disconnection is supported, the secondary control loop comprises a button with a lamp and a grouping reset button, and the countercurrent prevention detection unit detects the energy flow direction in real time through an intelligent electric meter and a current sensor and has a mains supply charging function. According to the test system, through a double-loop parallel test architecture and a multi-machine flexible combination design, the system can be synchronously butted with multiple energy storage cabinets to carry out parallel test, the test efficiency can be improved, and a safety system with anti-countercurrent detection, rapid mode switching and precise control protection guarantees the test safety; the arrangement of the standardized terminal and the button with the lamp simplifies the operation difficulty, and reduces the test threshold.

The technical scheme belongs to the technical field of circuit breakers, and particularly relates to a button tripping structure of a circuit breaker, which comprises a shell, a short-circuiting device, a tripper and a testing mechanism, the testing mechanism forms a loop to attract an armature after being electrified, the tripping structure is arranged in the shell and is linked with the testing mechanism, and the button tripping structure comprises a reset button, a linkage rod, an elastic piece and the armature. The reset button slides at a button opening in the side wall of the shell and is provided with a clamping part; the other end of the linkage rod penetrates through the through hole of the shell and is connected with the short-circuiting device; the elastic piece abuts against the reset button and the inner wall of the shell, so that the reset button tends to move towards the linkage rod, the armature is hinged to the interior of the shell, a lock catch protrusion is arranged and can be switched between a first position and a second position around a shaft, at the beginning, the armature is opened at the first position, and a clamping part of the lock catch protrusion limits the reset button. When the circuit breaker is released, the lock catch protrusion is released from the clamping portion, the elastic piece pushes the reset button to slide to the button opening, the linkage rod moves along with the reset button to release the circuit breaker, and releasing is smooth and efficient.

The invention discloses a multi-nozzle switching coaxial extrusion type biological 3D printer device which comprises an operation base table, a printing supporting frame, a three-axis movement system, a multi-nozzle switching system and a coaxial slurry extrusion system, and the three-axis movement system is installed above the operation base table according to space movement during printing work; the multi-nozzle switching system is installed on an upper supporting plate of the printing supporting frame. The coaxial slurry extrusion system is fixed through an upper supporting plate and a lower supporting plate of the printing supporting frame. An emergency stop knob, a manual discharge button, a reset button and a start-stop button are arranged on the operation base station; supporting legs are installed at the bottom of the operation base table, and anti-skid gaskets are installed on the lower portions of the supporting legs. The invention further discloses a using method of the multi-nozzle switching coaxial extrusion type biological 3D printer device. The device has the advantages of being high in printing precision, wide in biological material selection range, capable of achieving multi-material concurrent printing, capable of meeting the printing requirement of high-viscosity materials and the like, meanwhile, the proper number of nozzles can be switched and selected according to the layer number requirement of inner and outer layers of coaxial printing, then at most five-layer printing is achieved, and the requirements of various customer groups are met.

1. The name of the design product: self-service car washing integrated electric control box. 2. The use of the design product: to centrally install, manage and protect the core control unit of the car washing site (including network controller, TTS voice broadcaster), electrical accessories (circuit breaker, leakage protector, etc.) and external device interface (for connecting camera, roller shutter door control box, display screen, reset button, etc.). It provides power distribution and control, short circuit and leakage protection, network communication, voice prompt and remote management functions for all devices, and is the key hardware carrier to realize intelligent and networked operation of car washing sites. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The application discloses a kind of forming filter rod box traceability device and method, wherein method includes: starting reproduction, pressing reset button, when manual filling is completed, start disc unloading machine, second proximity switch is at low potential, generates disc unloading machine material signal, the disc unloading machine material signal triggers a track double stacker dispatching system distribution tray, and the information of filter rod transmitter group, tray, physical location and forming machine group is obtained according to the task list of track double stacker dispatching system by control system;The controller reads out the information of filter rod box about to enter disc unloading machine by second electronic tag reader, obtains the position of filter rod box in tray;The controller obtains the number of filter rod box in the filter rod box that is emitted in tray and the number of filter rod in the filter rod box that is emitted by photoelectric switch.The technical content disclosed by the application can quickly locate the specific position of defective filter rod box in which tray and forming machine.

The application discloses a grounding fault circuit breaker with automatic monitoring function, comprising a grounding fault circuit breaking module, an automatic monitoring circuit and an automatic and manual leakage detection circuit. After a reset button RESET is pressed and a test button TEST is pressed, when the tripping time of the grounding fault circuit breaker exceeds a set threshold, the MCU determines that the breaking is overtime, a discontinuous voltage is output from the 5th pin of the MCU, and at this time, a life termination alarm lamp R presents a flashing red alarm lamp. Compared with the prior art, the application solves the problem that the existing grounding fault circuit breaker cannot monitor whether the tripping time is normal.

This invention discloses an engineering machinery with a tilting ladder and a control method for the tilting ladder. The engineering machinery includes: a mechanical body, a ladder rotatably mounted on the mechanical body, and a surround view system. The mechanical body is equipped with a first controller and a second controller. The first controller is used to acquire information from an upward or downward limit sensor, parking lights, and gear position, and determines whether to disable the upward or downward self-reset button and activate the surround view system based on the acquired information. The second controller responds to a no-obstacle signal sent by the surround view system and a signal indicating that the downward or upward self-reset button has been activated, controlling the ladder to tilt down to a preset distance from the ground or tilt upward. This invention fully considers the situation of obstacles encountered in the ladder's movement area and the ladder's adaptability to different ground heights, improving the safety of the ladder's tilting operation and reducing the risk of damage during the downward tilting process.

The application provides a relay protection secondary circuit plunger voltage measurement training device, which comprises a portable training device body and a control circuit arranged in the training device body; the control circuit comprises a tripping circuit for simulating a tripping state and a closing circuit for simulating a closing state; in the simulation circuit, an intermediate relay is connected in series with an auxiliary contact of a reset button, two micro switches are connected in series at the upper and lower ends of the plunger respectively; the reset button and the micro switch connected in series at the upper end of the plunger are connected with one end of a change-over switch, the other end of the change-over switch is connected with a negative pole of a power supply through an intermediate relay coil, the intermediate relay and the micro switch connected in series at the lower end of the plunger are connected with a positive pole of the power supply. The application can realize portable training, and can help operation personnel to clearly master the plunger potential of the protection device of the circuit breaker under different conditions, and help to prevent the plunger misoperation and omission from the source.

The application discloses a small integrated portable relay protection test teaching device and a use method thereof. The device comprises a box body, a reset button and a reclosing mode switching handle are arranged on the front side of the box body, a rectifier bridge and a line differential protection device are arranged in the box body, the operation surface and the display surface of the line differential protection device are located on the front side of the box body, a bottom protection plate is arranged at the bottom of the box body, a plurality of universal wheels are arranged at the bottom of the bottom protection plate, a front protection plate is hingedly connected to the bottom protection plate and arranged on the front side of the box body, a rear protection plate is hingedly connected to the bottom protection plate and arranged on the rear side of the box body, a top protection plate is arranged above the box body, the front side of the top protection plate is hingedly connected to the front protection plate, and the rear side of the top protection plate is hingedly connected to the rear protection plate. A first positioning assembly is arranged between the front protection plate and the top protection plate. A second positioning assembly is arranged between the top protection plate and the rear protection plate. A connecting mechanism in a separated state is arranged between the box body and the front protection plate. The device has the advantages of being not prone to faults and convenient to use.

The utility model relates to the technical field of excitation systems, in particular to an automatic field suppression device and an excitation system, comprising a primary excitation power supply which is electrically connected with a generator rotor according to a current output direction; the de-excitation loop comprises a de-excitation switch and a de-excitation resistor which are sequentially connected between the positive electrode and the negative electrode of the primary excitation power supply, and the de-excitation resistor is connected with the generator rotor in parallel; and the overvoltage protection loop is connected in parallel with the de-excitation resistor and comprises an overvoltage jumper and an overvoltage resistor which are connected in sequence. According to the utility model, the primary excitation power supply, the field suppression circuit and the overvoltage protection circuit are used in cooperation, overvoltage protection can be provided for the field suppression circuit, the reset button is used in cooperation with the remote / local control module, manual reset is realized, and the problem of remote and local control switching is solved.

The utility model discloses a magnetic release module and an isolating switch, and the magnetic release module comprises a fixed plate, a release and a reset button. The release is fixed on the fixed plate; an actuating piece of the release comprises an actuating position and a reset position, and when the release is actuated, the actuating piece of the release moves from the reset position to the actuating position; at least part of the reset button is exposed on the fixing plate, the reset button is movably arranged and is associated with an actuating piece of the release, and a user operates the reset button to move so that the actuating piece can return to a reset position from an actuating position; according to the invention, modular installation is facilitated, and the reset of the release meets some special requirements.

The utility model discloses a portable power transformer wiring group and polarity tester, which comprises a box body, an electrical element and a tester, the electrical element is provided with primary side self-reset buttons SB1, SB2 and SB3, secondary side self-locking buttons SB4, SB5 and SB5, a switch, a power supply and a direct current millivoltmeter, the primary side outside the tester is provided with terminals A, B and C phases, and the secondary side outside the tester is provided with terminals A, B and C phases. The secondary side is provided with a terminal a, a terminal b and a terminal c, the phase a and the phase b are connected with the positive electrode and the negative electrode of a direct-current millivoltmeter through an SB4, the phase b and the phase c are connected with the positive electrode and the negative electrode of the direct-current millivoltmeter through an SB5, and the phase a and the phase c are connected with the positive electrode and the negative electrode of the direct-current millivoltmeter through an SB6; according to the tester, external primary side and secondary side wiring terminals can be simplified, measurement can be carried out only by connecting specific terminals, the wiring complexity is reduced, the test efficiency is improved, and the equipment applicability is improved.

A portable, open-type clamp-on non-invasive ammeter device (1) is capable of determining the production status of industrial machines by acquiring and analyzing current measurement samples. Data and parameters are analyzed and transmitted via the Internet by an embedded printed circuit board (PCB) and its components (48). Production status refers to the activities the machine is currently engaged in. Users can pre-define a list of production status names and enter their corresponding current threshold limits. The device (1) is responsible for comparing current measurements with these pre-determined threshold limits to determine the latest production status of the monitored machine. Among its many features, the device (1) includes: a reset button (20), a status light (21), a power input port (19), a plastic housing (18), a PCB (48), and an ADC. Optional features include an mountable adhesive or magnetic base (49) and a rechargeable battery.

The utility model discloses a flow accumulation device, and relates to the technical field of measurement. The device comprises a flow meter, a programmable logic controller (PLC), a selection switch and a reset button, the flow meter comprises a flow meter body and a differential pressure transmitter, the PLC comprises a power supply unit, a central processing unit, a timer, an analog quantity input unit and a switching value input unit, the flow meter body is electrically connected with the differential pressure transmitter, and the switching value input unit is electrically connected with the central processing unit. The differential pressure transmitter is electrically connected with the analog input unit, the analog input unit is electrically connected with the central processing unit, the selection switch is electrically connected with the switching value input unit, the reset button is electrically connected with the switching value input unit, the switching value input unit is electrically connected with the timer, and the timer is electrically connected with the central processing unit. The power supply unit is electrically connected with the central processor, the timer and the switching value input unit respectively; through the selection switch, the timer and the like, the accumulation time can be selected according to use requirements, and due to the fact that the accumulation time is short, the measurement accuracy is improved, and the applicability is better.

The utility model discloses a robot head structure, which belongs to the technical field of robots, and adopts the scheme that the robot head structure comprises a head shell, a bracket in the head shell and a neck connecting piece rotating seat, a storage battery is arranged in the support, a main circuit board is arranged on the front face, an auxiliary circuit board with a key assembly is arranged at the top end, and the main circuit board is electrically connected with a display screen, double microphones, a camera assembly and a loudspeaker on the back face of the support. Arm motors on the two sides of the lower end of the support are in shaft connection with arms, a head motor in the middle is in shaft connection with a driving gear, the driving gear is meshed with an incomplete gear on a hinge shaft of the rotating seat, and mesh holes and a functional groove with a Type-C interface and a reset key are formed in the back face of a head shell. The technical effects that the structure is compact, the head rotates accurately, the actuator can be replaced by the arms, the interactive experience is excellent, and the expansibility is high are achieved.

The utility model discloses a rubber vulcanizing device for producing a rubber sealing element, which belongs to the technical field of rubber vulcanizing, and comprises an operation table, the top of the operation table is provided with a display screen, a start button, a reset button, a shear button and an alarm lamp, by arranging the shearing assembly, residues at the corners of the rubber sealing element can be accurately removed within a short time, compared with manual operation, the rubber sealing element processing device is higher in running speed and more accurate in action, the processing work of a large number of products can be rapidly completed, meanwhile, the shearing assembly is arranged, and the processing efficiency of the rubber sealing element processing device is greatly improved. According to the rubber sealing element shearing device, the shearing of corner residues of each rubber sealing element can reach the unified standard and precision requirement, through the arrangement of the processing assembly, rapid heating can be achieved, rubber can reach the temperature condition needed by vulcanization more rapidly, rapid cooling can be achieved after vulcanization is completed, and the vulcanization period of the single rubber sealing element is shortened.

The utility model relates to a cable on-off universal detection device. The cable on-off universal detection device comprises a device shell, a PLC control panel, a standard connector, a device main switch, a display screen and a core wire definition and control button. A PLC controller, a multi-way switch module and a resistance acquisition module are arranged on the PLC control panel, the PLC controller is connected with two rows of core wire definition and control buttons positioned on the panel, the core wire definition and control buttons comprise a plurality of digital buttons, a confirmation button, a return button, a start button, a stop button and a reset button, and the number of the digital buttons is more than one. The definition module is used for defining corresponding relations of core wires at two ends of the multi-core cable; the multi-way switch module is used for realizing switching of multiple groups of measuring channels, the resistance acquisition module is used for measuring a resistance value, and the PLC is used for completing data processing and displaying a result on the display screen through the communication module. According to the utility model, the due on-off relationship of the core wires at the two ends of the multi-core cable can be self-defined, and the problems of long time consumption, low efficiency and the like of multi-core cable on-off detection are solved.

The utility model relates to an intelligent detection device for activation and delayed disconnection of a storage battery of an urban railway vehicle. The intelligent detection device comprises a power supply, a power switch, a signal acquisition module, a timing module, a digital display screen and a reset button which are connected in sequence, the power supply is used for supplying power to the detection device; the power switch is used for controlling on-off of a power supply; the signal acquisition module is used for acquiring a vehicle power-off signal; the timing module is used for timing the vehicle power-off signal acquisition process; the digital display screen is used for displaying delay time of activation and outage of the vehicle storage battery; and the reset button is used for resetting the numerical value displayed by the data display screen. The intelligent detection device for the activation time-delay disconnection of the storage battery of the urban railway vehicle can accurately measure the activation time-delay disconnection time of the storage battery of the urban railway vehicle, so that the test accuracy is improved, and the production efficiency is improved.

The invention discloses a false touch prevention power strip which comprises a socket body, a protection shell, a double-action unlocking mechanism and a limiting mechanism. The protection shell is connected with the socket body through the reset spring, and after the plug is pulled out after use is finished, the protection shell completely wraps the socket body again under the action of the reset spring. The double-action unlocking mechanism is divided into a sliding reset button and a traditional power supply self-locking reset button. During use, the sliding button is moved to the top end of the power supply self-locking reset button, then the sliding button is pressed down, and the power supply unlocking operation can be completed, so that the personal safety of a user can be effectively protected, and electric shock and water seepage accidents are avoided. And meanwhile, switching between a double-action unlocking mode and a single-action unlocking mode is achieved through the limiting mechanism, and convenience in daily use is improved.

This invention provides a fire detection and protection device for semiconductor CVD equipment, comprising a housing, a fire detection module, a control module, and an alarm module. The housing is mounted on one side of the control cabinet. The fire detection module includes a fire detector. The control module includes a self-locking relay, a time-delay relay, and a reset button. The alarm module includes an audible and visual alarm. The fire detector is disposed within the control cabinet, the self-locking relay and the time-delay relay are disposed within the housing, and the reset button and the audible and visual alarm are disposed on the housing. An AC contactor is provided in the control cabinet. The closing and opening of the normally open contacts of the AC contactor controls the on / off state of the main power supply of the control cabinet. The control module controls the energization and de-energization of the coil of the AC contactor based on the fire detector, thereby controlling the on / off state of the main power supply of the control cabinet. This invention improves the fire hazard prevention and control capabilities of semiconductor CVD equipment.

1. Name of the product in this design: Curve color adjustment settings area of ​​the graphical user interface for image editing of electronic devices. 2. Intended use of this design: for use in an electronic device. 3. The key design feature of this product lies in the graphical user interface on the screen. 4. The picture or photo that best illustrates the key points of the design: Main view of Design 1. 5. Design 1 is designated as the basic design. 6. Purpose of the graphical user interface: The main views of Design 1 to Design 7 are image editing interfaces used to edit images; the lower half of the interface displays the editing curve, and users can adjust the curve by sliding the color points on the curve to edit the image; the four circles on the left above the curve represent four colors, and clicking them allows you to select the color to be edited; the two icons on the right represent deleting color points and resetting, respectively; the button above the reset button is the comparison button. Design 1's main view is the editing interface for the original image. Design 2's main view shows the interface for image editing using the first color point from left to right. Design 3's main view shows the interface when editing is completed using the first color point from left to right, and when editing the image using the second color point. Design 4's main view shows the interface when editing the image using the first, third, and fourth color points from left to right, and then using the second color point for image editing. Design 5's main view shows the interface when editing is completed using the first color point from left to right, and when editing the image using the fourth color point. Design 6's main view shows the interface when editing is completed using the first color point from left to right, and when editing an image using the third color point. The main view of Design 7 shows the interface when editing is completed using the first two color points from left to right, and when editing the image using the third color point. 7. From the main view of Design 1 to the main view of Design 7, the partial appearance design of the product is requested to be protected. The dotted lines in the drawings do not form the part for which protection is requested.

The application discloses a high-precision small font high-frequency inductor silk screen automatic machine and a production process thereof, and relates to the technical field of automatic label printing machines. The high-precision small font high-frequency inductor silk screen automatic machine and the production process thereof comprise a base, and the top of the base is provided with a control box, a vibration disc feeding module, an eight-station material taking and layout module and a part position correction module. The control box is used for turning on a power switch through a total power knob. After the whole machine is reset for 3 seconds, a start button is pressed, and the machine can enter an automatic state, start automatic operation or step operation, and be paused or stopped through a stop knob. The reset button is used for removing a fault alarm of the machine, and the whole machine is reset for 3 seconds. The emergency stop switch is used for emergency braking. The touch screen is used for operation, display and parameter setting. Different working states can be represented through different color warning signal lamps, and the machine has high practicability.

The utility model provides a self-reset type key protection cover, which comprises a mounting base connected with an equipment surface and provided with a through groove in the middle, and a working button is arranged in the through groove; the rotating shaft is arranged on one side surface of the mounting base; the torsional spring is arranged on the rotating shaft, one end of the torsional spring is clamped with the mounting base, and the other end of the torsional spring is connected with a protective cover; and one end of the protective cover is rotationally connected with the rotating shaft, and the key protective cover is used for solving the technical problems that the unfolding angle of the conventional key protective cover is controlled through the friction force of the rotating shaft, the protective cover is automatically opened in a vibration environment, and the misoperation cannot be prevented.