Power switch capable of cutting off power regularly

Abstract

The utility model relates to the technical field of timing switches, and discloses a power switch capable of cutting off power regularly, which comprises a protective shell, the lower surface of the protective shell is connected with a protective plate in a sliding manner, and a protective lead screw, a protective motor, a protective hydraulic rod, a protective hydraulic machine, a battery and a switch box are inserted into the protective shell. According to the utility model, the structure is reasonable, the switch assembly is inserted into the lower surface of the protection shell, the protection plate slides under the protection shell, the switch assembly is fixed and tightened and prevented from falling off, the protection plate slides in the protection shell, the switch assembly is used for a long time to cause aging damage, replacement and maintenance are convenient, the operation panel adjusts the timer, and the relay controls time timing; the situation that the service life of an electric appliance is shortened due to the fact that the electric appliance is always in a power-on state after being started for a long time is avoided, a timer lifts and rotates a threaded column of a timing hydraulic rod, an operation panel, the timer and a relay are conveniently and rapidly taken down for maintenance, and the equipment facilitates rapid installation, replacement and maintenance of workers at different positions and saves the maintenance and replacement time.

Description

Technical Field

[0001] The utility model relates to the technical field of timer switches, in particular to a power switch capable of timing power off. Background Art

[0002] Various power switches currently in use are fixed on the wall and use buttons to control the lights. When in use, the lights must be turned on and off manually. However, in real life, due to busy work and study, we are simply unable to take care of turning off the lights, especially after going to bed, it is very troublesome to get up and turn off the power.

[0003] A power switch disclosed in the Chinese utility model patent application disclosure specification CN218215078U can fix the power switch by clamping the block in the clamping slot of the fixing frame, and the power switch can be taken out by pressing the rod inward to make the block disengage from the clamping slot. The power switch can be disassembled and assembled without using tools, which is convenient for staff to maintain. The limit rod is clamped in the limit slot to fix the limit plate and the touch rod to prevent the touch rod from accidentally touching the switch button. When the switch button needs to be pressed, the pull ring needs to be pulled first to make the limit rod disengage from the limit slot before the touch rod can be pressed inward to avoid the operation. Personnel accidentally touch the switch button, causing unnecessary trouble, but the device only disassembles and assembles the power switch, which is convenient for staff to repair and avoids the operator accidentally touching the switch button, causing unnecessary trouble, but the appliance is always turned on and will be in the power-on state, shortening the service life, wasting energy resources, and unable to perform timing control on the power switch, and unable to quickly install and replace and repair different positions to avoid illegal operation of the equipment affecting use when the timer is being repaired, and the problem that the power switch is not convenient to install and quickly connect the wires in some narrow locations, so a utility model is proposed to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a power switch that can cut off power at a scheduled time, which solves the problems of saving energy by timing control of the power switch, avoiding illegal operation of maintenance equipment by installing, replacing and repairing the power switch at different locations, and facilitating installation in narrow locations.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a power switch that can cut off power at a time, comprising a protective shell, a protective plate is slidably connected to the lower surface of the protective shell, a protective screw is inserted into the interior of the protective shell, one end of the protective screw is sleeved with a protective motor, a protective hydraulic rod is inserted into one side of the protective shell, one end of the protective hydraulic rod is sleeved with a protective hydraulic press, one side of the protective shell is inserted with a battery, a switch assembly is inserted into the lower surface of the protective shell, one side of the switch assembly is inserted with a fixing assembly, a timing hydraulic press is inserted into the upper surface of the protective shell, one end of the timing hydraulic press is sleeved with a timing hydraulic rod, one end of the timing hydraulic rod is threaded through a threaded seat, a timer is fixedly connected to the upper surface of the threaded seat, a relay is fixedly connected to the upper surface of the timer, and an operation panel is inserted into the upper surface of the timer.

[0008] Optionally, the switch assembly includes a switch box, a switch button, an A spring, a switch coil, a pin, a switch plate, a B spring, a contact plate, an arc extinguishing grid, an A connecting plate, and a B connecting plate. The switch box is rotatably connected to the inside of the switch button, one end of the switch button is fixedly connected to the switch plate, one side of the switch plate is sequentially plugged with an A spring and a B spring from top to bottom, one end of the A spring is plugged with a pin, one end of the B spring is plugged with a contact plate, an arc extinguishing grid is plugged into the inside of the contact plate, one end of the arc extinguishing grid is sleeved with a switch coil, one end of the switch coil is plugged with an A connecting plate, and one end of the contact plate is plugged with a B connecting plate.

[0009] Optionally, the fixing assembly includes a fixed seat, a fixed slider, a fixing clamp A, a fixing clamp B, a fixed shaft, a fixed motor, a fixed screw, and a screw motor. The upper surface of the fixed seat is slidably connected to the fixed slider, the upper surface of the fixed slider is fixedly connected to the fixing clamp A, the upper surface of the fixing clamp A is plugged into the fixing clamp B, one side of the fixing clamp B is plugged into, one end of the fixed shaft is sleeved with the fixed motor, a fixed screw is inserted into the interior of the fixed seat, and one end of the fixed screw is sleeved with the screw motor.

[0010] Optionally, a fixed slide rail is provided on one side of the fixed seat, and the fixed slide rail of the fixed seat is adapted to the fixed sliding block.

[0011] Optionally, a hole is opened on one side of the protective shell, and the protective hole of the protective shell is used to fix the protective motor to prevent it from falling off.

[0012] Optionally, a timing hole is opened on the upper surface of the protective shell, and the timing hole of the protective shell and the timing hydraulic press are adapted to each other to increase stability.

[0013] Optionally, a threaded column is inserted into one end of the timing hydraulic rod, and a threaded seat is threaded through the threaded column of the timing hydraulic rod to facilitate disassembly and replacement.

[0014] Optionally, a protective slide rail is provided on the lower surface of the protective shell, and the protective slide rail of the protective shell limits the protective lead screw to prevent displacement.

[0015] In summary, the technical effects and advantages of the utility model are:

[0016] 1. The utility model has a reasonable structure. The switch component is plugged into the lower surface of the protective shell. The protection motor drives the protection screw to rotate, and the protection plate slides under the protective shell. The switch component is fixed and tightened to prevent it from falling. The protection plate slides in the protective shell. The switch component is damaged due to aging caused by long-term use, which is convenient for subsequent replacement and maintenance of the switch component. The operation panel adjusts the timer and the relay controls the timing to avoid unnecessary expenses on electricity bills caused by the electrical appliances being turned on all the time. The service life of the electrical appliances is shortened by being powered on for a long time. The timing hydraulic press drives the timing hydraulic rod to raise and lower the timer, and the threaded column of the timing hydraulic rod is rotated to quickly remove the operation panel, timer, and relay for maintenance. The equipment is convenient for workers to quickly install and replace and repair different positions, thereby greatly saving the time for maintenance and replacement.

[0017] 2. In the utility model, the timer is used to time the hydraulic press, so that the hydraulic rod is moved to extend and retract, and the switch button is controlled. The wiring connector of the switch box is energized, and the switch button is energized. The A spring and the B spring make the switch button switch. As long as the current in the circuit exceeds the rated current, the ejector pin and the ejector pin spring press the switch plate down to automatically disconnect the switch from the contact plate and the switch coil to avoid short circuit. At the moment the line is disconnected, the current continues to generate an arc at the contact point. The arc extinguishing grid divides the arc into multiple small segments so that the arc is quickly extinguished in the air, thereby protecting the electrical appliance from damage. The fixed motor drives the fixed shaft to make the A fixing clamp and the B fixing clamp enter the switch to close and fix the wires. The screw motor drives the fixed screw to rotate to make the A fixing clamp and the B fixing clamp slide on the fixed seat. In some narrow locations where it is inconvenient to install the quick-closed wires, the fixing and sliding of the A fixing clamp and the B fixing clamp are convenient for workers to install quickly in narrow locations, speed up the installation speed, and save the workers' physical strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is an explosion diagram of the protective shell structure of the utility model;

[0020] Figure 3 This is an exploded schematic diagram of the timer structure of the utility model;

[0021] Figure 4 This is a schematic plan view of the switch box structure of the utility model;

[0022] Figure 5 It is an exploded schematic diagram of the fixing seat structure of the utility model.

[0023] In the figure: 1. protective shell; 2. protective plate; 3. protective screw; 4. protective motor; 5. protective hydraulic rod; 6. protective hydraulic press; 7. battery; 8. switch assembly; 801. switch box; 802. switch button; 803. A spring; 804. switch coil; 805. ejector pin; 806. switch plate; 807. B spring; 808. contact plate; 809. arc extinguishing grid; 8010. A connecting plate; 8011. B connecting plate; 9. fixing assembly; 901. fixing seat; 902. fixing slider; 903. A fixing clip; 904. B fixing clip; 905. fixing shaft; 906. fixing motor; 907. fixing screw; 908. screw motor; 10. timing hydraulic press; 11. timing hydraulic rod; 12. threaded seat; 13. timer; 14. relay; 15. operation panel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: Reference Figure 1-Figure 5 A power switch capable of timing power off is shown, comprising a protective shell 1, a protective plate 2 being slidably connected to the lower surface of the protective shell 1, a protective lead screw 3 being inserted inside the protective shell 1, a protective motor 4 being sleeved on one end of the protective lead screw 3, a protective hydraulic rod 5 being inserted on one side of the protective shell 1, a protective hydraulic machine 6 being sleeved on one end of the protective hydraulic rod 5, a battery 7 being inserted on one side of the protective shell 1, a switch assembly 8 being inserted on the lower surface of the protective shell 1, a fixing assembly 9 being inserted on one side of the switch assembly 8, a timing hydraulic machine 10 being inserted on the upper surface of the protective shell 1, a timing hydraulic rod 11 being sleeved on one end of the timing hydraulic machine 10, a threaded seat 12 being threadedly penetrated at one end of the timing hydraulic rod 11, a timer 13 being fixedly connected to the upper surface of the threaded seat 12, a relay 14 being fixedly connected to the upper surface of the timer 13, and an operating panel 15 being inserted on the upper surface of the timer 13.

[0026] As a preferred implementation in this embodiment, Figure 2 and Figure 3As shown, a protection plate 2 is slidably connected to the lower surface of the protection shell 1, a protection screw 3 is inserted into the interior of the protection shell 1, a protection slide rail is provided on the lower surface of the protection shell 1, and the protection slide rail of the protection shell 1 limits the protection screw 3 to prevent displacement, a protection slider is provided on the upper surface of the protection plate 2, and the protection slider and the protection slide rail are adapted to each other, a protection motor 4 is sleeved on one end of the protection screw 3, a hole is provided on one side of the protection shell 1, and the protection hole of the protection shell 1 fixes the protection motor 4 to prevent it from falling off, and the protection plate 2, the protection screw 3, and the protection motor 4 are symmetrically arranged in two, a protection hydraulic rod 5 is inserted on one side of the protection shell 1, and a protection hydraulic press 6 is sleeved on one end of the protection hydraulic rod 5, a battery 7 is inserted on one side of the protection shell 1, and a switch assembly 8 is inserted on the lower surface of the protection shell 1 A fixing component 9 is plugged into one side of the switch component 8, a timing hydraulic press 10 is plugged into the upper surface of the protective shell 1, a timing hole is provided on the upper surface of the protective shell 1, the timing hole of the protective shell 1 and the timing hydraulic press 10 are adapted to each other to increase stability, the material of the protective shell 1 is stainless steel, a timing hydraulic rod 11 is sleeved on one end of the timing hydraulic press 10, a threaded seat 12 is threaded through one end of the timing hydraulic rod 11, a threaded column is plugged into one end of the timing hydraulic rod 11, and a threaded seat 12 is threaded through the threaded column of the timing hydraulic rod 11 for easy disassembly and replacement, a threaded hole is provided inside the threaded seat 12, the threaded hole and the threaded column are adapted to each other, and a timer 13 is fixedly connected to the upper surface of the threaded seat 12. The earliest timing tools used by humans were hourglasses or water leaks, but after the birth of clocks and watches, After it matured, people began to try to use this new timing tool to improve timer 13 to achieve the purpose of accurate time control. Timer 13 is indeed a remarkable invention, which makes many jobs that require people to control time much simpler. People even used timer 13 in military aspects and made time bombs and time detonators. Many household appliances are equipped with timer 13 to control switches or working time. Relay 14 is fixedly connected to the upper surface of timer 13. Relay is an electrical control device. When the change of input quantity reaches the specified requirement, it causes a predetermined step change in the controlled quantity in the electrical output circuit. It has an interactive relationship between the control system and the controlled system, and is usually used in automated control circuits. In fact, it is an "automatic switch" that uses a small current to control the operation of a large current, so it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. The upper surface of the timer 13 is plugged with an operation panel 15. During use, the switch component 8 is plugged in through the lower surface of the protective shell 1, and the protection motor 4 drives the protection screw 3 to rotate, so that the protection plate 2 slides back and forth under the protective shell 1, so that the protection plate 2 fixes and tightens the switch component 8 to prevent it from falling. The protection plate 2 slides in the protective shell 1, and the switch component 8 is damaged by aging due to long-term use, so that it is convenient to replace and repair the switch component 8 later, save the physical consumption of personnel, and speed up the replacement speed. The timer 13 and the relay 14 are adjusted through the operation panel 15 to control the timing.This avoids unnecessary expenses on electricity bills caused by the electrical appliances being turned on all the time, wastes precious energy resources, and shortens the service life of the electrical appliances being turned on for a long time and being powered on. The timing hydraulic machine 10 drives the timing hydraulic rod 11 to raise and lower the timer 13. By rotating the threaded column of the timing hydraulic rod 11, it is convenient to quickly remove the operation panel 15, timer 13, and relay 14 for maintenance, avoiding illegal operation of the equipment when the timer 13 is being repaired. The equipment facilitates workers to quickly install and replace and repair different positions, thereby greatly saving the time for maintenance and replacement.

[0027] like Figure 1 and Figure 5As shown, in this embodiment, the lower surface of the protective shell 1 is slidably connected with a protective plate 2, a protective screw 3 is inserted inside the protective shell 1, one end of the protective screw 3 is sleeved with a protective motor 4, a protective hydraulic rod 5 is inserted on one side of the protective shell 1, one end of the protective hydraulic rod 5 is sleeved with a protective hydraulic press 6, a battery 7 is inserted on one side of the protective shell 1, and a switch assembly 8 is inserted on the lower surface of the protective shell 1. The switch assembly 8 includes a switch box 801, a switch button 802, an A spring 803, a switch coil 804, a pin 805, a switch plate 806, a B spring 807, a contact plate 808, an arc extinguishing grid 809, an A connecting plate 8010, and a B connecting plate 8011. The switch button 802 is rotatably connected to the inside of the switch box 801, and one end of the switch button 802 A switch plate 806 is fixedly connected, and one side of the switch plate 806 is plugged with an A spring 803 and a B spring 807 from top to bottom in sequence. An ejector pin 805 is plugged into one end of the A spring 803, and an ejector spring is provided on the lower surface of the ejector pin 805. A contact plate 808 is plugged into one end of the B spring 807, and an arc extinguishing grid 809 is plugged into the interior of the contact plate 808. A switch coil 804 is sleeved on one end of the arc extinguishing grid 809, and an A connecting plate 8010 is plugged into one end of the switch coil 804. A B connecting plate 8011 is plugged into one end of the contact plate 808. Connectors are provided at the top and bottom of the switch box 801, respectively. A fixing component 9 is provided. The fixing component 9 includes a fixing seat 901, a fixing slider 902, an A fixing clip 903, a B fixing clip 904, a fixing Axle 905, fixed motor 906, fixed lead screw 907, lead screw motor 908, the upper surface of fixed seat 901 is slidably connected with fixed slider 902, one side of fixed seat 901 is provided with a fixing hole, the fixing hole fixes the lead screw motor 908 to prevent it from falling off, the upper surface of fixed slider 902 is fixedly connected with A fixing clamp 903, the upper surface of A fixing clamp 903 is plugged with B fixing clamp 904, one side of B fixing clamp 904 is plugged with fixed shaft 905, one end of fixed shaft 905 is sleeved with fixed motor 906, the interior of fixed seat 901 is plugged with fixed lead screw 907, one end of fixed lead screw 907 is sleeved with lead screw motor 908, the upper surface of timer 13 is fixedly connected with relay 14, the upper surface of timer 13 is plugged with operating Panel 15 is timed by timer 13 during use. When the timer is up, the protection hydraulic machine 6 moves the protection hydraulic rod 5 to extend and retract, thereby controlling the switch button 802. The switch box 801 is powered on by turning on the switch button 802, and the switch button 802 is switched on by A spring 803 and B spring 807. As long as the current in the circuit exceeds the rated current, the switch plate 806 is pressed down by the ejector pin 805 and the ejector spring to automatically disconnect the contact plate 808 and the switch coil 804 to avoid short circuit. At the moment the line is disconnected, the current continues to generate an arc at the contact point. The arc is divided into multiple small segments by the arc extinguishing grid 809 so that the arc is quickly extinguished in the air.Thus, the electrical appliances are protected from damage. The fixed motor 906 drives the fixed shaft 905 to make the A fixing clip 903 and the B fixing clip 904 close the switch to fix the wires. The screw motor 908 drives the fixed screw 907 to rotate so that the A fixing clip 903 and the B fixing clip 904 slide back and forth on the fixing seat 901, so that it is not convenient to install the wires in some narrow locations. Therefore, the fixing and sliding of the A fixing clip 903 and the B fixing clip 904 facilitates the workers to quickly install in narrow locations, speeds up the installation speed and saves the workers' physical strength.

[0028] How this utility works:

[0029] During use, the switch assembly 8 is plugged into the lower surface of the protective shell 1, and the protective motor 4 drives the protective lead screw 3 to rotate, so that the protective plate 2 slides back and forth under the protective shell 1. The protective plate 2 slides in the protective shell 1. Long-term use of the switch assembly 8 causes aging and damage. The timer 13 and the relay 14 are adjusted through the operation panel 15 to control the timing. The timing hydraulic machine 10 drives the timing hydraulic rod 11 to make the timer 13 rise and fall. By rotating the threaded column of the timing hydraulic rod 11, the operation panel 15, the timer 13, and the relay 14 can be easily and quickly removed. Maintenance is performed, and the timing is performed by the timer 13. After the timing time is up, the protection hydraulic machine 6 moves the protection hydraulic rod 5 to extend and retract, thereby controlling the switch button 802. The power is supplied by turning on the switch button 802 through the connector in the switch box 801, and the switch button 802 is switched through the A spring 803 and the B spring 807. As long as the current in the circuit exceeds the rated current, the switch plate 806 is pressed down through the ejector pin 805 and the ejector pin spring to automatically disconnect the switch from the contact plate 808 to the switch coil 804. The current continues to be connected. The contacts are still generating arcs, and the arc is divided into multiple small segments by the arc extinguishing grid 809 so that the arc is quickly extinguished in the air. The fixed motor 906 drives the fixed shaft 905 to make the A fixing clamp 903 and the B fixing clamp 904 enter the switch to close and fix the wires. The screw motor 908 drives the fixed screw 907 to rotate so that the A fixing clamp 903 and the B fixing clamp 904 slide back and forth on the fixing seat 901. The switch assembly 8 is used for a long time by the device, which causes aging and damage, thereby facilitating the subsequent replacement and maintenance of the switch assembly 8, saving the physical exertion of personnel and speeding up the replacement speed. This avoids unnecessary expenses on electricity bills caused by electrical appliances being turned on all the time, wasting precious energy resources, and shortening the service life of electrical appliances by keeping them powered on for a long time. The device facilitates workers to quickly install and replace and repair electrical appliances at different locations, thereby greatly saving the time for repair and replacement. The switch assembly 8 automatically disconnects the switch to avoid current short circuit and protect the electrical appliances from damage. The fixing and sliding of the A fixing clip 903 and the B fixing clip 904 facilitate workers to quickly install electrical appliances in a small location, speeding up the installation and saving workers' physical strength.

[0030] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A power switch capable of timing power off, comprising a protective shell (1), characterized in that: The lower surface of the protective shell (1) is slidably connected to a protective plate (2); a protective screw (3) is inserted into the interior of the protective shell (1); one end of the protective screw (3) is sleeved with a protective motor (4); a protective hydraulic rod (5) is inserted into one side of the protective shell (1); one end of the protective hydraulic rod (5) is sleeved with a protective hydraulic machine (6); a battery (7) is inserted into one side of the protective shell (1); a switch assembly (8) is inserted into the lower surface of the protective shell (1); one side of the switch assembly (8) is inserted with a fixing assembly (9); a timing hydraulic machine (10) is inserted into the upper surface of the protective shell (1); one end of the timing hydraulic machine (10) is sleeved with a timing hydraulic rod (11); one end of the timing hydraulic rod (11) is threadedly penetrated by a threaded seat (12); a timer (13) is fixedly connected to the upper surface of the threaded seat (12); a relay (14) is fixedly connected to the upper surface of the timer (13); and an operation panel (15) is inserted into the upper surface of the timer (13).

2. A power switch capable of timed power off according to claim 1, characterized in that: The switch assembly (8) comprises a switch box (801), a switch button (802), an A spring (803), a switch coil (804), a pin (805), a switch plate (806), a B spring (807), a contact plate (808), an arc extinguishing grid (809), an A connecting plate (8010), and a B connecting plate (8011); the switch box (801) is rotatably connected to the switch button (802) at one end; the switch plate (806) is fixedly connected to one end of the switch button (802); One side is sequentially plugged with an A spring (803) and a B spring (807) from top to bottom, one end of the A spring (803) is plugged with a pin (805), one end of the B spring (807) is plugged with a contact plate (808), an arc extinguishing grid (809) is plugged inside the contact plate (808), one end of the arc extinguishing grid (809) is sleeved with a switch coil (804), one end of the switch coil (804) is plugged with an A connecting plate (8010), and one end of the contact plate (808) is plugged with a B connecting plate (8011).

3. A power switch capable of timed power off according to claim 1, characterized in that: The fixing assembly (9) comprises a fixing seat (901), a fixing slider (902), an A fixing clamp (903), a B fixing clamp (904), a fixing shaft (905), a fixing motor (906), a fixing lead screw (907), and a lead screw motor (908); the fixing slider (902) is slidably connected to the upper surface of the fixing seat (901); the A fixing clamp (903) is fixedly connected to the upper surface of the fixing slider (902); the B fixing clamp (904) is plugged into the upper surface of the A fixing clamp (903); the fixing shaft (905) is plugged into one side of the B fixing clamp (904); the fixing motor (906) is sleeved on one end of the fixing shaft (905); the fixing lead screw (907) is inserted into the interior of the fixing seat (901); and the lead screw motor (908) is sleeved on one end of the fixing lead screw (907).

4. A power switch capable of timed power off according to claim 3, characterized in that: A fixed slide rail is provided on one side of the fixed seat (901), and the fixed slide rail of the fixed seat (901) and the fixed slide block (902) are adapted to each other.

5. A power switch capable of timed power off according to claim 1, characterized in that: A hole is provided on one side of the protective shell (1), and the protective hole of the protective shell (1) is used to fix the protective motor (4) to prevent it from falling off.

6. A power switch capable of timed power off according to claim 1, characterized in that: A timing hole is provided on the upper surface of the protective shell (1), and the timing hole of the protective shell (1) and the timing hydraulic press (10) are adapted to each other to increase stability.

7. A power switch capable of timed power off according to claim 1, characterized in that: A threaded column is inserted into one end of the timing hydraulic rod (11), and a threaded seat (12) is threadedly penetrated through the threaded column of the timing hydraulic rod (11) to facilitate disassembly and replacement.

8. A power switch capable of timed power off according to claim 1, characterized in that: A protective slide rail is provided on the lower surface of the protective shell (1), and the protective slide rail of the protective shell (1) limits the protective lead screw (3) to prevent displacement.

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