33 results about "Centrifugal switch" patented technology

The invention relates to the technical field related to intelligent production control, in particular to a powder spraying method and system for the surface of a slender pipe and a medium, and the method comprises the steps that the preprocessed slender pipe is placed on a workbench containing multiple assemblies, electrostatic spraying is conducted through a spray gun, powder feeding adjustment is conducted, the angle of a flow guide groove is dynamically adjusted according to parameter combination, and spraying uniformity is controlled in combination with rotating speed induction. The technical problems that dynamic parameter matching mechanisms for different pipe diameters and wall thicknesses are lacked, airflow changes in the inner space of a slender pipe are difficult to cope with, and uneven distribution of powder in the pipe is likely to be caused are solved, the coating thickness deviation is controlled by associating a spray gun mechanism with a pipe rotating assembly, and the spiral angle of a flow guide groove is dynamically adjusted along with friction torque; and the piezoelectric centrifugal switch is used for detecting the rotating speed fluctuation in real time, the spray gun displacement compensation and the powder feeding amount adjustment are automatically triggered to enable the powder to be distributed in the pipe, and the machining efficiency is improved on the basis that the powder spraying quality of the surface of the long and thin pipe is guaranteed.

The invention relates to the technical field of wind power gear box high-speed shaft sealing, in particular to a wind power gear box high-speed shaft non-contact zero-leakage combined sealing device which is used for sealing a gap between a high-speed shaft in a wind power gear box and a gear box high-speed shaft end cover. The sealing device comprises a sealing sleeve assembly, a centrifugal switch assembly, a magnetic fluid sealing assembly, an overflow valve assembly and an air guide pressure maintaining assembly. The sealing sleeve assembly and the centrifugal switch assembly form clearance sealing, the sealing sleeve assembly, the air guide pressure maintaining assembly and the magnetic fluid sealing assembly form air pressure sealing together, and the magnetic fluid sealing assembly forms magnetic fluid sealing. The high-speed shaft and the outer end cover of the wind power gear box are sealed together through the synergistic effect of gap sealing, air pressure sealing and magnetic fluid sealing. And meanwhile, pressure maintaining is conducted on a pressure maintaining ring cavity in the air guiding and pressure maintaining assembly through the overflow valve assembly, and lubricating oil leaked into the pressure maintaining ring cavity is discharged into the gearbox through the overflow valve assembly.

The invention discloses a centrifugal switch vibration signal acquisition and analysis method, and relates to the technical field of centrifugal switch testing, and the method comprises the steps: designing a vibration signal acquisition circuit frame which comprises a vibration sensor, a signal conditioning circuit, a band-pass filter, a high-speed data acquisition circuit and data processing software; establishing a signal conditioning circuit, wherein the signal conditioning circuit comprises a constant current source module, a signal blocking module, a buffering and amplifying module, a direct current bias level adjusting module and a low-pass filtering module; building a band-pass filter, and using an active second-order low-pass filter and an active second-order high-pass filter to improve the bandwidth of the band-pass filter; a high-speed data acquisition circuit is established, and a high-precision AD sampling chip is adopted to acquire data; analyzing the collected data through data processing software by using a wavelet transformation algorithm and a sliding window standard deviation algorithm to obtain a vibration signal starting moment; when the vibration signals are collected, the precision is high, and the vibration time is accurately judged.

The invention discloses a clothes dryer motor reverse and forward rotation control method and a clothes dryer, and relates to the technical field of clothes dryers, the clothes dryer motor reverse and forward rotation control method comprises a main winding, an auxiliary winding, a controller, a first relay, a second relay and a centrifugal switch, the main winding and a power source are connected in series, and the first relay, the auxiliary winding, the first relay, the centrifugal switch and the power source are electrically connected. And the controller is used for controlling the on-off of the first relay and the second relay so as to realize the exchange between the head end and the tail end of the secondary winding. Only the auxiliary winding column is always used as the starting winding, strict requirements for consistency of parameters of the main winding and the auxiliary winding in the prior art are not needed, the specification of the main winding can be flexibly matched, the quality control difficulty in the production process is reduced, and the production efficiency and the yield of the motor are improved.

The motor centrifugal switch comprises a positioning base and a positioning sleeve, a contact bracket body is fixedly connected between the two ends of the positioning base, a movable contact is fixedly connected to the middle of the contact bracket body, and fixed contacts matched with the movable contact are fixedly connected to the top and the bottom of the end, close to the movable contact, of the inner side of the positioning base. The outer side of the positioning sleeve is fixedly connected with linear sliding strips, the outer sides of the linear sliding strips at the same end are slidably connected with pressing plates, centrifugal assemblies are arranged at the two ends of the top of the positioning sleeve, and reset assemblies are arranged on the two sides of the top of the positioning sleeve and used for supporting the positions of the centrifugal assemblies. The centrifugal assembly comprises a central shaft rod, a centrifugal plate, a balancing weight, a through groove A, a linkage plate, a guide plate and a supporting shaft rod. Through overall structural cooperation, the connecting stability of all the components can be guaranteed, meanwhile, the components can be conveniently disassembled and assembled, and later maintenance is facilitated.

The invention relates to a mandrel structure for centrifugal switch testing and a testing method thereof, and aims to solve the technical problems that existing similar products are difficult to be used for rotating speed testing of a multi-contact centrifugal switch, the intelligent degree is low, big data analysis and processing capacity of a model is lacked, and a sensor and a camera are used cooperatively. A body of the structure is a plugging mandrel, a vibration sensor and an acoustic sensor are arranged at the plugging mandrel, a movable block is arranged in a movable groove of the plugging mandrel, one end of the movable block is hinged in the movable groove, and the other end of the movable block is warped outwards through a spring and extends out; the key point is that a hinge seat and a wrench seat are symmetrically arranged on two sides of the outer diameter of the machine body below the plugging mandrel, one end of the wrench rod is hinged and fixed on the hinge seat to rotate, the other end of the wrench rod is placed on the wrench seat when the wrench rod is reset after rotation, and a wiring terminal is fixedly arranged on the outer diameter of the wrench rod. One end of the middle of the inner side of the positive and negative wiring of the wiring terminal is higher than the wrench rod and is provided with a positioning column; and the wiring terminal is connected with an on-off switch in the machine body through a wire.

Disclosed herein is a flying ring and operations thereof. The flying ring may comprise LED strip(s) mounted around a rim, and a controller that automatic controls operation of the LED strip. The LED strip may be controlled using a centrifugal switch based on the flying disc having been thrown, rotating, and / or flying in the air. Players can adjust the color, light intensity, and / or display mode of the LED strip to increase the appeal when playing. The flying ring can be suitable both for use as an entertainment toy and for use in sports. The flying ring may have good impact resistance, good water resistance, floats on water, is easy to hold, and is safe for players. The LED strip(s) can include a plurality of LEDs including, but not limited to, three LEDs for, e.g., attractive flying lighting effects, to 3000 LEDs or more for, e.g., super high brightness.

In order to solve the problem that an existing centrifugal switch only rotates forwards, two microswitches are arranged on one side in a wire box body (2) in an overlapped mode, and the two microswitches are arranged on the other side in the wire box body (2) in an overlapped mode. A reversing cam (12) is installed between the two microswitches and the other two microswitches, the lower end of the reversing cam (12) is connected with the lower end of a reversing rod (1) arranged outside the wire box body (2) through a short shaft (14), the reversing cam (12) is further connected with a bottom plate (6) of the wire box body (2) through a reset spring (13), and the short shaft (14) is connected with the bottom plate (6) of the wire box body (2) through a support (20) and a positioning seat (9). And the upper end of the reversing rod (1) is in contact with a lifting disc on the centrifuge (10).

The embodiment of the invention provides a single-phase asynchronous motor. The single-phase asynchronous motor comprises a capacitor connected with a starting winding in series, and a centrifugal switch for controlling the connection mode of the capacitor and the starting winding, when the rotating speed of the motor is lower than the set rotating speed, the centrifugal switch enables capacitors formed by polar plates in the capacitors to be connected in parallel, and when the rotating speed of the motor is higher than the set rotating speed, the centrifugal switch enables partial capacitors formed by the polar plates in the capacitors to be connected in series, so that the capacitors have the function of high-capacity starting capacitors when the rotating speed is lower than the set rotating speed. When the rotating speed of the capacitor is higher than the set rotating speed, the capacitor has a small-capacity running capacitor function, only one capacitor is adopted to replace two capacitors in the prior art, and at least the function of saving the space of the motor is achieved.

This document discloses a frisbee and its operating method. The frisbee may include an LED light strip mounted around its edge and a controller for automatically controlling the operation of the LED light strip. A centrifugal switch can be used to control the LED light strip based on the frisbee being thrown, spinning in the air, and / or flying. Players can adjust the color, intensity, and / or display mode of the LED light strip to enhance its appeal during play. This frisbee is suitable for both recreational use and sports activities. The frisbee is designed for good impact resistance and water resistance, allowing it to float on water, is easy to hold, and is safe for the player. The LED light strip may include multiple LEDs, including but not limited to three LEDs, to achieve, for example, an attractive flight lighting effect, or may include 3000 or more LEDs to achieve, for example, ultra-high brightness.

The technical scheme belongs to the technical field of rotor production equipment, and particularly relates to a rotor machining device which comprises a main machine frame, the rotor transfer mechanism comprises a rotor lifting part movably arranged on the main rack; the front bearing press-fitting mechanism comprises a left side positioning assembly and a right side front bearing positioning assembly, when the front bearing is press-fitted, the rear end of the rotor abuts against the right side front bearing positioning assembly, and the bearing is press-fitted to the front end of the rotor through the left side positioning assembly; the centrifugal switch press-fitting mechanism comprises a right side centrifugal switch positioning assembly, when the centrifugal switch is press-fitted, the front end of the rotor abuts against the left side positioning assembly, the right side centrifugal switch positioning assembly presses the centrifugal switch at the rear end of the rotor, and the right side front bearing positioning assembly is movably arranged on the centrifugal switch press-fitting mechanism; and a rear bearing press-fitting mechanism. Wherein the left side positioning assembly, the right side front bearing positioning assembly and the right side centrifugal switch positioning assembly are arranged on the same axis.

The utility model discloses a positioning fixture for a centrifugal switch of an air turbine starter, which relates to the technical field of auxiliary tools of milling machines and comprises a mounting base, a supporting piece, a mounting platform and a limiting component. The limiting assembly is installed on the installation platform and used for locking and limiting the centrifugal switch to be installed. The positioning fixture is reasonable in design, the centrifugal switch is fixed on the positioning fixture, and looseness and size matching deviation of the centrifugal switch during disassembly and assembly are prevented. The mounting platform can support the centrifugal switch during disassembly and assembly, and the mounting base can stabilize the whole positioning clamp, so that the positioning clamp can be stably placed on a table top during use.

The technical scheme belongs to the technical field of rotor production equipment, and particularly relates to rotor press-fitting equipment which comprises a main machine frame. A rotor feeding device; the centrifugal switch machining device is used for conveying a centrifugal switch to a suspended state, the rotor feeding device clamps a rotor and inserts the rotor into the centrifugal switch from bottom to top, and assembling of the rotor and the centrifugal switch is achieved; the bearing machining device comprises a rotor transfer mechanism, a front bearing press-fitting mechanism, a centrifugal switch press-fitting mechanism and a rear bearing press-fitting mechanism, and the rotor transfer mechanism is used for transferring a rotor to the front of the front bearing press-fitting mechanism, the centrifugal switch press-fitting mechanism and the rear bearing press-fitting mechanism in sequence; and the rotor paint rolling device comprises a rotor grabbing mechanism and a rotor paint rolling mechanism, and the rotor grabbing mechanism is used for placing the rotor into the rotor paint rolling mechanism and discharging the rotor after paint rolling is completed.

The present invention relates to a motor-type pulse magnetizer and an operation method thereof. The motor-type pulse magnetizer comprises an energy storage and discharge integrated motor, an energy storage contactor, a starting capacitor, a centrifugal switch, a discharge switch and a magnetizing coil. After passing through the energy storage contactor, the AC mains is divided into two parallel paths, one of which is used to be connected to an energy storage winding of the energy storage and discharge integrated motor, and the other is used to be connected to a discharge winding of the energy storage and discharge integrated motor through a starting capacitor and a centrifugal switch connected in series in sequence, and the two parallel paths constitute an energy storage circuit. The discharge switch and the magnetizing coil are connected in series in sequence and then connected to the two ends of the discharge winding of the energy storage and discharge integrated motor to constitute a discharge circuit. The structure significantly reduces the volume of the magnetizer, reduces the manufacturing cost of the magnetizer and increases the service life of the magnetizer.

The invention discloses a miniature wind driven generator with a power assisting function, and relates to the technical field of wind power generation, the miniature wind driven generator comprises a tower pole, a first flange plate is fixedly connected to the top end of the tower pole, a blade rod is connected into the first flange plate and a second flange plate in a sleeved mode, and a power assisting mechanism and a connecting mechanism are installed on the blade rod. Under the condition of small wind or no wind, the centrifugal switch can control the booster to be started, the booster drives the second gear to rotate through the first gear, the second gear drives the generator to move, so that the blade rod, the first wind wheel blade and the like rotate, and when the speed reaches a certain degree, the first wind wheel blade is driven to rotate. The centrifugal switch can control the booster to stop working, at the moment, the first wind wheel blade and the second wind wheel blade can continuously rotate for a period of time under the centrifugal force and the inertia effect of rotation of the first wind wheel blade and the second wind wheel blade, so that the device can generate electricity under the conditions of strong wind, small wind or no wind, the electricity generation duration is guaranteed, and the electricity generation efficiency is improved.

The present invention discloses a starting capacitor controller including a running capacitor, including a power module, an IC chip, an optical coupler, a control switch, a capacitor and a winding, wherein the capacitor includes a starting capacitor CS and a running capacitor CR, and the IC chip drives the optical coupler to control the control switch, thereby realizing control of the starting capacitor CS. The present invention combines an electronic centrifugal switch with a running capacitor to realize integrated control of the starting capacitor and the running capacitor, which can effectively reduce labor time and space waste, and reduce the probability of failure.

The utility model discloses a single-phase motor starting device with a protection function, and relates to the technical field of one-way motor starting. Comprising a control circuit used for controlling a main circuit switch of the single-phase motor, and further comprises an auxiliary contactor, a time relay and an auxiliary capacitor, and a group of normally open contacts of the auxiliary contactor are connected with a control coil of the time relay in series and then are parallel to the control circuit; the auxiliary capacitors are connected in series with the other group of normally open contacts of the auxiliary contactor and then are connected in parallel with the operation capacitor of the single-phase motor, and multiple groups of auxiliary capacitors are connected in parallel; a control coil of the auxiliary contactor is connected in series with a centrifugal switch of the single-phase motor; and a normally closed contact of the time relay is connected in series with the control circuit. According to the utility model, the problem that the winding coil is destroyed and cannot be started due to overlarge load or long-time starting when the motor is started can be solved.

The utility model relates to a rapid plugging mandrel for centrifugal switch testing, and aims to solve the technical problems that the pressing force of a testing mandrel of a conventional similar centrifugal switch product is difficult to adjust, the tightness is easy to change after repeated plugging operation, and the best state is difficult to reach. Through holes which are arranged at equal intervals are formed in an upper rod body of a core rod on the inner side of an upper ring opening groove of a positioning ring of the quick plugging mandrel, and the exposed parts of inner movable blocks in the through holes are higher than the outer diameter of the core rod; the core rod is characterized in that a cylindrical hole is formed in a rod body of the core rod, the elastic body is arranged in the cylindrical hole of the core rod, a rear gasket and a front gasket are arranged at the two ends of the elastic body in the cylindrical hole respectively, and a rear adjusting screw is arranged in a small screw hole, communicated with a flange of the rod body, of the bottom of the cylindrical hole at the rear gasket. A front adjusting screw is arranged in a hole opening of the cylindrical hole in the front gasket, an inner hexagonal hole is formed in the top of the front adjusting screw, the elastic body is cylindrical sponge silica gel, and the end of the rod body of the core rod and the inclined face of the outer diameter of the movable block incline correspondingly.

The invention relates to a rapid plugging mandrel for centrifugal switch testing, and aims to solve the technical problems that the pressing force of a testing mandrel of an existing similar centrifugal switch product is difficult to adjust, the tightness is easy to change after repeated plugging operation, and the best state is difficult to reach. Through holes which are arranged at equal intervals are formed in an upper rod body of a core rod on the inner side of an upper ring opening groove of a positioning ring of the quick plugging mandrel, and the exposed parts of inner movable blocks in the through holes are higher than the outer diameter of the core rod; the core rod is characterized in that a cylindrical hole is formed in a rod body of the core rod, the elastic body is arranged in the cylindrical hole of the core rod, a rear gasket and a front gasket are arranged at the two ends of the elastic body in the cylindrical hole respectively, and a rear adjusting screw is arranged in a small screw hole, communicated with a flange of the rod body, of the bottom of the cylindrical hole at the rear gasket. A front adjusting screw is arranged in a hole opening of the cylindrical hole in the front gasket, an inner hexagonal hole is formed in the top of the front adjusting screw, the elastic body is cylindrical sponge silica gel, and the end of the rod body of the core rod and the inclined face of the outer diameter of the movable block incline correspondingly.

The utility model is suitable for the technical field of motor starters, and provides a shield pump single-phase motor silicon controlled rectifier starter module, which comprises a thyristor starter electrically connected with a shield pump single-phase motor. A starting winding and an operation winding which are connected in parallel are arranged in the shielding pump single-phase motor. The starting winding is connected in series with a power output resistor; the thyristor starter comprises a silicon controlled rectifier, a bimetallic electrostriction blade delay switch and a heating resistance wire; compared with traditional resistor split-phase starting, capacitor starting, centrifugal switch starting and the like, the device has the advantages that the size is smaller, the stability is higher, the starting torque is larger, the device is not limited by temperature, and the starting speed is higher. A single-phase motor of the submerged shield pump is broken through, and the submerged shield pump can be efficiently started and operated without using a capacitor, a centrifugal switch or a PTC (Positive Temperature Coefficient) starter and other devices traditionally.

A centrifugally activated electronic device without an external switch. The electronic device includes an activation circuit, a power source, and electronic components sealed within a housing. The activation circuit includes a pair of centrifugal switches on opposite sides of the housing, which are closed by rapidly rotating the device housing, to complete the activation circuit and thereby turn on at least one of the electronic components. The electronic components include a power switch component that can be turned on by energizing the activation circuit and turned off manually via a powered, buttonless user interface, such as a graphical touch screen, and / or automatically when the electronic components detect a shutoff condition.

The present application relates to the technical field of high-speed shaft sealing of wind power gear box, and particularly relates to a wind power gear box high-speed shaft non-contact zero-leakage combined sealing device for sealing the gap between the high-speed shaft in the wind power gear box and the high-speed shaft end cover of the gear box. The sealing device comprises a sealing sleeve assembly, a centrifugal switch assembly, a magnetic fluid sealing assembly, an overflow valve assembly and a gas guide pressure maintaining assembly. The sealing sleeve assembly and the centrifugal switch assembly form a gap seal, the sealing sleeve assembly, the gas guide pressure maintaining assembly and the magnetic fluid sealing assembly jointly form an air pressure seal, the magnetic fluid sealing assembly forms a magnetic fluid seal, and the gap seal, the air pressure seal and the magnetic fluid seal jointly seal the high-speed shaft in the wind power gear box and the outer end cover through the synergistic effect. Meanwhile, the overflow valve assembly maintains the pressure of the pressure maintaining ring cavity in the gas guide pressure maintaining assembly, and the lubricating oil leaked into the pressure maintaining ring cavity is discharged into the gear box through the overflow valve assembly.

Disclosed herein is a flying ring and operations thereof. The flying ring may comprise LED strip(s) mounted around a rim, and a controller that automatic controls operation of the LED strip. The LED strip may be controlled using a centrifugal switch based on the flying disc having been thrown, rotating, and / or flying in the air. Players can adjust the color, light intensity, and / or display mode of the LED strip to increase the appeal when playing. The flying ring can be suitable both for use as an entertainment toy and for use in sports. The flying ring may have good impact resistance, good water resistance, floats on water, is easy to hold, and is safe for players. The LED strip(s) can include a plurality of LEDs including, but not limited to, three LEDs for, e.g., attractive flying lighting effects, to 3000 LEDs or more for, e.g., super high brightness.

Disclosed herein is a flying ring and operations thereof. The flying ring may comprise LED strip(s) mounted around a rim, and a controller that automatic controls operation of the LED strip. The LED strip may be controlled using a centrifugal switch based on the flying disc having been thrown, rotating, and / or flying in the air. Players can adjust the color, light intensity, and / or display mode of the LED strip to increase the appeal when playing. The flying ring can be suitable both for use as an entertainment toy and for use in sports. The flying ring may have good impact resistance, good water resistance, floats on water, is easy to hold, and is safe for players. The LED strip(s) can include a plurality of LEDs including, but not limited to, three LEDs for, e.g., attractive flying lighting effects, to 3000 LEDs or more for, e.g., super high brightness.

The utility model provides a double-throw double-contact centrifugal switch for a single-phase motor, and relates to the technical field of motors. Comprising a mounting bottom plate, a U-shaped opening end is provided with a first movable contact elastic sheet and a second movable contact elastic sheet, a groove bottom is provided with a first static contact fixing sheet and a second static contact fixing sheet, a first movable contact limiting frame and a third static contact fixing sheet are arranged between the two sides of the first static contact fixing sheet and the two sides of the second static contact fixing sheet, and a first static contact and a second static contact are mounted on a fixing sheet. The first movable contact elastic piece and the second movable contact elastic piece are both provided with hemispherical sliding points to be in sliding connection with a centrifugal mechanism of the centrifuge, the inner side of the first movable contact elastic piece is connected with a first movable contact, the inner side of the second movable contact elastic piece is connected with a second movable contact, and the second movable contact is arranged between the first static contact and the third static contact and can be switched between the first static contact and the third static contact. According to the utility model, the three groups of conductive polar plates are controlled to be connected in series and in parallel through the action of the contacts on the centrifugal switch, the starting capacitance and operation capacitance requirements of the motor are effectively switched, and the control mode is simple, convenient and reliable.

The utility model discloses a single-phase motor strong starting auxiliary device, and relates to the technical field of motor auxiliary starting. Comprising an auxiliary unit used for assisting starting, the auxiliary unit is provided with a wiring terminal, and the wiring terminal is connected to a wiring box of the single-phase motor through a wiring bus; the auxiliary unit is characterized in that the auxiliary unit is provided with a contactor and a CBB60 capacitor, a control coil of the contactor is connected with a centrifugal switch of the single-phase motor in series through the wiring bus, a main contact of the contactor is connected with the CBB60 capacitor in series and then is connected with an operation capacitor of the single-phase motor in parallel through the wiring bus, and the main contact of the contactor is connected with the CBB60 capacitor in parallel. A main contact of the contactor is a normally open contact; the number of the CBB60 capacitors is 3-5, and the CBB60 capacitors are arranged in parallel. According to the utility model, the problem that the starting capacitor of the large flywheel in the crusher is easy to overheat and even burst can be solved, and the safety and efficiency of the single-phase motor during large-load starting are ensured.

The present invention discloses a motor centrifugal switch, comprising a positioning base and a positioning sleeve, wherein a contact bracket body is fixedly connected between the two ends of the positioning base, a moving contact is fixedly connected to the middle part of the contact bracket body, the top and bottom of the inner side of the positioning base near one end of the moving contact are fixedly connected to fixed contacts matching the moving contact, a linear slide is fixedly connected to the outer side of the positioning sleeve, and a pressure plate is slidably connected to the outer sides of the linear slides at the same end, centrifugal components are provided at both ends of the top of the positioning sleeve, and reset components are provided on both sides of the top of the positioning sleeve, the reset component is used to support the position of the centrifugal component, the centrifugal component includes a central shaft, a centrifugal plate, a counterweight, a through slot A, a linkage plate, a guide plate and a support shaft. The present invention relates to the technical field of centrifugal switches; the present invention can ensure the connection stability of each component while also being able to conveniently disassemble and assemble it through the overall structural coordination, so as to facilitate later maintenance.

The utility model discloses a motor centrifugal switch device, which comprises a centrifuge and a centrifugal sheet, the centrifugal sheet comprises a centrifugal sheet base and a centrifugal spring sheet, the centrifugal spring sheet is riveted or connected above the centrifugal sheet base through a screw, and an on-off contact assembly is arranged between the centrifugal sheet base and the centrifugal spring sheet. The centrifuge comprises a connecting plate and a centrifugal disc arranged at the bottom of the connecting plate, a motor shaft connecting assembly is arranged in the middle of the top of the connecting plate, and centrifugal blocks are clamped to the inner sides of the two sides of the connecting plate. According to the utility model, the on-off contact piece is detachably connected to one end of the centrifugal spring piece, so that when the on-off contact piece and the lower contact piece are sintered together, the on-off contact piece and the lower contact piece can be replaced under the condition that the centrifugal piece is not detached, the replacement process is simple, the practical convenience is improved, the cost is reduced, and the service life is prolonged. And through the arrangement of the contact pad and the balls, the friction force between the centrifugal disc and the contact pad is reduced.

1. The name of this design product: centrifugal switch. 2. Purpose of this design product: used to control the operation of the motor. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the key points of the design: Design 1 3D drawing. 5. Designate Design 1 as the base design.

A self-propelled rocket toy includes an elongated body located along a longitudinal axis having a top end opposite a bottom end. The body may include at least two supports outwardly extending from and fixed relative to the body. A propeller is centered about the longitudinal axis located about the body's bottom end. An electric motor is disposed within the body and mechanically coupled to the propeller. A power source is disposed within the body and electrically coupled to the electric motor. An activation mechanism is electrically coupled to the electric motor and power source. The activation mechanism may be a launch button or a centrifugal switch. The at least two supports are fins extending outwardly and are configured to induce an autorotation for a controlled descent, either by their shape and design and / or by including a pivotably attached flap.