CN110993450A

CN110993450A - Dampproofing safe power-off switch

Info

Publication number: CN110993450A
Application number: CN202010003501.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Pujiang Tanpu Electronic Technology Co Ltd
Current assignee: Pujiang Tanpu Electronic Technology Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-04-10

Abstract

The invention discloses a moisture-proof safety power-off switch which comprises a shell, wherein a transmission cavity is arranged at the upper left end in the shell, an emergency power-off mechanism for emergently powering off the switch is arranged in the transmission cavity, a moisture-proof mechanism for preventing a circuit in the switch from moisture is arranged in the shell, a switch mechanism for controlling the circuit to be switched on and off is arranged at the right end of the shell, the switch can be locked during working so as to prevent the circuit from being powered off due to mistaken touch on the switch, when the switch works in a humid environment, the circuit can be isolated from water vapor so as to achieve the moisture-proof purpose, and when the circuit is in short circuit, the circuit can be automatically powered off, and safety accidents can be avoided.

Description

Dampproofing safe power-off switch

Technical Field

The invention relates to the field of electric switches, in particular to a moisture-proof safety power-off switch.

Background

The electric switch is an indispensable part in the circuit, can control the power-on condition of the circuit, can control the operation of machine and power saving etc. through the electric switch.

At the present stage, most of electric switches are waterproof and moistureproof through self materials, the moisture resistance is reduced along with the increase of the using time of the switches, most of the switches are lack of the function of automatically cutting off the circuit in short circuit, and the potential safety hazard cannot be eliminated in time.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a moisture-proof safe power-off switch, which overcomes the problems of poor moisture resistance of the switch, lack of short-circuit and timely power-off functions and the like, improves the moisture resistance and increases the short-circuit and timely power-off functions.

The invention is realized by the following technical scheme.

The invention relates to a moisture-proof safety power-off switch which comprises a shell, wherein a transmission cavity is arranged at the upper left end in the shell, an emergency power-off mechanism for emergently powering off the switch is arranged in the transmission cavity, a moisture-proof mechanism for preventing a circuit in the switch from moisture is arranged in the shell, and a switch mechanism for controlling the circuit to be switched on and off is arranged at the right end of the shell;

the emergency power-off mechanism comprises a power-on cavity positioned at the left end in the shell, a first power-on block capable of moving left and right in the cavity is arranged at the left end in the power-on cavity, a first power-on wire is electrically connected to the external connection of the left end face of the first power-on block, an elastic spring is connected between the left end face of the first power-on block and the left cavity wall of the power-on cavity, a second power-on block capable of moving left and right in the cavity is arranged at the right end in the power-on cavity, an elastic spring is connected between the right end face of the second power-on block and the right cavity wall of the power-on cavity, a second power-on wire is electrically connected to the right end of the second power-on block, a moving cavity with a downward opening is arranged at the upper side of the power-on cavity, a moving block capable of moving up and down in the moving cavity is arranged in the moving cavity, a partition plate with the lower, the movable type electromagnetic clutch is characterized in that a driven cavity with a rightward opening is arranged in the cavity wall of the left movable cavity, a rotating rod is arranged on the front wall, the rear wall and the front wall and the rear wall of the driven cavity in a rotating mode, a rotating gear connected with a rack in a meshed mode is arranged at the front end of the rotating rod, a worm wheel is arranged at the rear end of the rotating rod, a rotating shaft with a lower end extending into the driven cavity is arranged on the lower cavity wall of the transmission cavity in a rotating mode, a first bevel gear located in the transmission cavity is arranged at the upper end of the rotating shaft, a worm connected with the worm wheel in a meshed mode is arranged at the lower end of the rotating shaft, a magnetic cavity is arranged on the lower side of the magnetic cavity, an electromagnet is fixedly arranged at the left end of the magnetic cavity, a wire is electrically connected between the electromagnet and a first electric block, a magnet capable of.

Further, the switch mechanism comprises a pushing cavity which is positioned at the right end of the shell and has a right opening, a pushing block which can move left and right in the cavity is arranged in the pushing cavity, a push rod with the left end extending into the electrifying cavity is fixedly arranged on the left end surface of the pushing block, the lower end of the push rod is provided with a clamping groove with a downward opening, the wall of the lower cavity of the push cavity is provided with a clamping block cavity with an upward opening, a clamping block which can move up and down in the clamping block cavity is arranged in the clamping block cavity, a compression spring is connected between the lower end surface of the clamping block and the lower cavity wall of the clamping block cavity, the lower end surface of the clamping block is fixedly connected with a rope, the right end of the shell is provided with a pushing block cavity which is positioned at the lower side of the pushing cavity and has a rightward opening, the rope-pulling device is characterized in that a push block capable of moving left and right in the cavity is arranged in the push block cavity, a telescopic spring is connected between the left end face of the push block and the left cavity wall of the push block cavity, and one end of the rope is fixedly connected to the lower end face of the push block.

Further, the emergency power-off mechanism comprises a motor fixed on the left cavity wall of the transmission cavity, an adsorption cavity which is communicated up and down is arranged at the right end in the shell, the right end of the motor is in power connection with a transmission shaft, the right end of the motor extends into the adsorption cavity, the left end of the transmission shaft is in splined connection with a second bevel gear positioned in the transmission cavity, a sliding cavity with a right opening is arranged in the second bevel gear, a sliding block which can slide in the cavity is arranged in the sliding cavity, the right end of the sliding block is fixedly connected with one end of the pull rope, the left end of the transmission shaft is also provided with a rotating plate, two reset springs are fixedly connected between the right end surface of the rotating plate and the left end surface of the second bevel gear, the right end of the transmission shaft is provided with a third bevel gear positioned in the adsorption cavity, the upper, the upper end of the fan shaft is provided with a fourth bevel gear in meshed connection with the third bevel gear, and the lower end of the fan shaft is provided with two fan blades.

Further, the pulling force of the two return springs is larger than the friction force applied to the second bevel gear when the second bevel gear slides on the transmission shaft.

Further, the elastic force of the elastic spring is larger than the sum of the friction force received by the second electrifying block when the second electrifying block slides in the electrifying cavity and the friction force received by the pushing block when the pushing block slides in the pushing cavity.

The invention has the beneficial effects that: the switch has a simple structure, is convenient and fast to operate, can be locked during working so as to prevent power failure caused by mistaken touch of the switch, can isolate a circuit from water vapor when the switch works in a humid environment so as to achieve the aim of moisture prevention, and can automatically cut off the power when the circuit is in a short circuit so as to avoid safety accidents.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram at B in FIG. 1 according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-3, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The moisture-proof safe power-off switch comprises a shell 10, wherein a transmission cavity 23 is arranged at the upper left end in the shell 10, an emergency power-off mechanism 25 for emergency power-off of a switch is arranged in the transmission cavity 23, a moisture-proof mechanism 35 for moisture-proof circuits in the switch is arranged in the shell 10, a switch mechanism 41 for controlling the on-off of the circuits is arranged at the right end of the shell 10, the emergency power-off mechanism 25 comprises a power-on cavity 12 located at the left end in the shell 10, a first power-on block 14 capable of moving left and right in the cavity is arranged at the left end in the power-on cavity 12, a first power-on wire 15 is electrically connected to the left end face of the first power-on block 14, an elastic spring 16 is connected between the left end face of the first power-on block 14 and the left cavity wall of the power-on cavity 12, a second power-on block 56 capable of moving left and right in the cavity is arranged at the right end in the power-on cavity 12, an elastic spring 39 is connected, the right end of the second electrifying block 56 is electrically connected with a second electrifying wire 44, the upper side of the electrifying cavity 12 is provided with a moving cavity 31 with a downward opening, the moving block 30 capable of moving up and down in the cavity is arranged in the moving cavity 31, the lower end face of the moving block 30 is fixedly provided with a partition plate 22 with a lower end extending into the electrifying cavity 12, the left end face of the partition plate 22 is provided with a rack 21, a tension spring 28 is fixedly arranged between the upper end face of the moving block 30 and the upper cavity wall of the moving cavity 31, the left cavity wall of the moving cavity 31 is provided with a driven cavity 20 with a rightward opening, the front wall, the rear wall, the front wall and the rear wall of the driven cavity 20 are rotatably provided with rotating rods 17, the front end of each rotating rod 17 is provided with a rotating gear 18 engaged with the rack 21, the rear end of each rotating rod 17 is provided with a worm wheel 58, the lower cavity wall of, the lower end of the rotating shaft 65 is provided with a worm 19 connected with the worm wheel 58 in a meshed mode, a magnetic cavity 11 is arranged on the lower side of the magnetic cavity 12, an electromagnet 57 is fixedly arranged at the left end of the magnetic cavity 11, the electromagnet 57 is electrically connected with a wire 13 between the first magnetic block 14, a magnet 55 capable of moving left and right in the cavity is arranged at the right end of the magnetic cavity 11, a pressure spring 54 is connected between the right end face of the magnet 55 and the right cavity wall of the magnetic cavity 11, and a pull rope 53 is connected to the right end face of the magnet 55.

Beneficially, the switch mechanism 41 includes a pushing cavity 40 located at the right end of the housing 10 and having a right opening, a pushing block 43 capable of moving left and right in the cavity is disposed in the pushing cavity 40, a pushing rod 42 having a left end extending into the power-on cavity 12 is fixedly disposed on the left end face of the pushing block 43, a clamping groove 45 having a downward opening is disposed at the lower end of the pushing rod 42, a clamping block cavity 47 having an upward opening is disposed on the lower cavity wall of the pushing cavity 40, a clamping block 46 capable of moving up and down in the cavity is disposed in the clamping block cavity 47, a compression spring 48 is connected between the lower end face of the clamping block 46 and the lower cavity wall of the clamping block cavity 47, a rope 50 is fixedly connected to the lower end face of the clamping block 46, a pushing block cavity 51 having a right opening and located at the lower side of the pushing cavity 40 is disposed at the right end of the housing 10, a pushing block 49 capable of moving left and right in the cavity is disposed in the, one end of the rope 50 is fixedly connected to the lower end face of the push block 49.

Advantageously, the emergency power-off mechanism 25 comprises a motor 24 fixed on the left cavity wall of the transmission cavity 23, the right end of the housing 10 is provided with an absorption cavity 37 which is communicated up and down, the right end of the motor 24 is connected with a transmission shaft 29 with the right end extending into the absorption cavity 37 in a power mode, the left end of the transmission shaft 29 is connected with a second bevel gear 61 in the transmission cavity 23 in a spline mode, a sliding cavity 63 with a right opening is arranged in the second bevel gear 61, a sliding block 62 which can slide in the sliding cavity is arranged in the sliding cavity 63, the right end of the sliding block 62 is fixedly connected with one end of the pull rope 53, the left end of the transmission shaft 29 is further provided with a rotating plate 59, two return springs 60 are fixedly connected between the right end surface of the rotating plate 59 and the left end surface of the second bevel gear 61, the right end of the transmission shaft 29 is provided with a third bevel gear 32 in the absorption cavity, the lower end of the water absorption layer 34 on the upper side is rotatably provided with a fan shaft 36, the upper end of the fan shaft 36 is provided with a fourth bevel gear 33 in meshed connection with the third bevel gear 32, and the lower end of the fan shaft 36 is provided with two fan blades 38.

Advantageously, the tension of the two return springs 60 is greater than the friction to which the second bevel gear 61 is subjected when sliding on the transmission shaft 29.

Advantageously, the elastic force of the elastic spring 39 is greater than the sum of the friction force to which the second energizing block 56 is subjected when sliding in the energizing chamber 12 and the friction force to which the pushing block 43 is subjected when sliding in the pushing chamber 40.

In the initial state, the magnet 55 is located at the right end in the magnetism passing chamber 11, the pulling rope 53 is in a slack state, the second bevel gear 61 is in a disengaged state with the first bevel gear 27, and the partition plate 22 and the moving block 30 are located in the moving chamber 31 by the first bevel gear 27.

When the switch is turned on, the pushing block 43 is pushed leftwards, the pushing block 43 moves leftwards to drive the push rod 42 to move leftwards, so that the second electrifying block 56 is pushed leftwards to move to be in contact with the first electrifying block 14, the circuit starts to be electrified normally, the current passing through the electromagnet 57 is small when the circuit is electrified normally, the magnet 55 cannot be attracted to move leftwards by the magnetism generated by the electromagnet 57, the fixture block 46 can enter the fixture groove 45 when the pushing block 43 moves leftwards to push the pushing block 43 to move rightwards under the elastic force of the elastic spring 39 to reset, so that the continuous circuit of the circuit is maintained, when the switch is turned off, the pushing block 49 is pushed leftwards, the pushing block 49 moves leftwards to strain the rope 50, the fixture block 46 moves downwards under the tensile force of the rope 50 to leave the fixture groove 45, and the pushing block 43;

when moisture is prevented, the motor 24 is started, the motor 24 works to drive the transmission shaft 29 to rotate, so that the second bevel gear 61 and the third bevel gear 32 are driven to rotate, the third bevel gear 32 rotates to drive the fourth bevel gear 33 in meshed connection with the third bevel gear to rotate, the fourth bevel gear 33 rotates to drive the fan shaft 36 and the two fan blades 38 on the fan shaft 36 to rotate, and the fan blades 38 rotate to suck out water vapor in the device through the adsorption cavity 37;

during short circuit emergency power-off, the current flowing through the first energizing block 14 during short circuit is increased, the current flowing through the electromagnet 57 is also increased, the magnetic force of the electromagnet 57 is increased so as to attract the magnet 55 in opposite polarity, the magnet 55 moves leftwards, the pull rope 53 is tensioned, the second bevel gear 61 moves rightwards under the tension of the pull rope 53 to be meshed with the first bevel gear 27, the second bevel gear 61 rotates to drive the first bevel gear 27 meshed with the second bevel gear to rotate, so as to drive the rotating shaft 65 and the worm 19 at the lower end of the rotating shaft 65 to rotate, the worm 19 rotates to drive the worm wheel 58 meshed with the worm to rotate, the worm wheel 58 rotates to drive the rotating rod 17 and the rotating gear 18 at the front end of the rotating rod 17 to rotate, the rotating gear 18 rotates to drive the partition plate 22 meshed with the rotating rod 65 to move downwards, the partition plate 22 moves downwards to enter between the first energizing block 14 and the, thereby isolating the first energization block 14 from the second energization block 56 for power off.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a dampproofing safe power off switch, includes the shell, its characterized in that: a transmission cavity is arranged at the upper left end in the shell, an emergency power-off mechanism for emergently powering off the switch is arranged in the transmission cavity, a moisture-proof mechanism for preventing a circuit in the switch from being damp is arranged in the shell, and a switch mechanism for controlling the circuit to be switched on and off is arranged at the right end of the shell;

2. A moisture-proof safety power-off switch as claimed in claim 1, wherein: the switch mechanism comprises a pushing cavity which is positioned at the right end of the shell and has a rightward opening, a pushing block which can move left and right in the cavity is arranged in the pushing cavity, a push rod with the left end extending into the electrifying cavity is fixedly arranged on the left end surface of the pushing block, a clamping groove with a downward opening is arranged at the lower end of the push rod, the lower cavity wall of the push cavity is provided with a fixture block cavity with an upward opening, a fixture block capable of moving up and down in the fixture block cavity is arranged in the fixture block cavity, a compression spring is connected between the lower end surface of the clamping block and the wall of the lower cavity of the clamping block cavity, a rope is fixedly connected with the lower end surface of the clamping block, a push block cavity which is positioned at the lower side of the push cavity and has a right opening is arranged at the right end of the shell, a push block which can move left and right in the cavity is arranged in the push block cavity, and an expansion spring is connected between the left end face of the push block and the left cavity wall of the push block cavity, and the lower end face of the push block is fixedly connected with one end of the rope.

3. A moisture-proof safety power-off switch as claimed in claim 1, wherein: the emergency power-off mechanism comprises a motor fixed on the wall of the left cavity of the transmission cavity, an adsorption cavity which is communicated up and down is arranged at the right end in the shell, the right end of the motor is in power connection with a transmission shaft, the right end of the transmission shaft extends into the adsorption cavity, a second bevel gear is in splined connection with the left end of the transmission shaft, a sliding cavity with a right opening is arranged in the second bevel gear, a sliding block which can slide in the cavity is arranged in the sliding cavity, the right end of the sliding block is fixedly connected with one end of the pull rope, the left end of the transmission shaft is also provided with a rotating plate, two reset springs are fixedly connected between the right end surface of the rotating plate and the left end surface of the second bevel gear, a third bevel gear which is arranged in the adsorption cavity is arranged at the right end of the transmission shaft, the upper end of the fan shaft is provided with a fourth bevel gear in meshed connection with the third bevel gear, and the lower end of the fan shaft is provided with two fan blades.

4. A moisture-proof safety power-off switch as claimed in claim 2, wherein: the pulling force of the two return springs is larger than the friction force applied to the second bevel gear when the second bevel gear slides on the transmission shaft.

5. A moisture-proof safety power-off switch as claimed in claim 1, wherein: the elasticity of the elastic spring is larger than the sum of the friction force received by the second electrifying block when the second electrifying block slides in the electrifying cavity and the friction force received by the pushing block when the pushing block slides in the pushing cavity.