Emergency power-off switch
By designing an emergency power-off switch with built-in safety device, the problem of the lack of a safety device in the existing emergency power-off switch is solved, and the automatic detection and manual emergency power-off functions are realized, which improves the safety and reliability of the electrical system.
Patent Information
- Application Number
- CN202422226824.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing emergency power-off switches lack safety devices, which require additional installation, which is time-consuming and labor-intensive, and are easily neglected to install, resulting in excessive current causing short circuits of motors and other devices.
An emergency power-off switch is designed with a built-in safety device, including a transmission rod, shrapnel, static contact bolts and elastic device, which can automatically detect the current and automatically power off when the current is too high, and also provides manual emergency power off function.
The emergency power-off switch and the safety device are synergistically implemented, providing safety and insurance for the equipment, avoiding short-circuit damage caused by excessive current, and improving the safety and reliability of the electrical system.
Smart Images
Figure CN223023099U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical switch devices, and particularly relates to an emergency power-off switch. Background Art
[0002] The emergency power-off switch can be used in various occasions, such as new energy vehicles, fuel vehicles, etc. The existing emergency power-off switch does not have an insurance device itself and needs to be installed separately, which is time-consuming and laborious, and sometimes the installation is ignored, resulting in the short circuit of devices such as motors due to excessive current. Content of the Utility Model
[0003] Aiming at the existing technical deficiencies, the purpose of the utility model is to provide an emergency power-off switch.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is: an emergency power-off switch, including a housing, a cavity is provided in the housing, a transmission rod is movably connected in the cavity, a first clamping position is provided on both the left and right sides of the transmission rod, two elastic pieces and two second clamping positions respectively provided on the left and right inner walls of the cavity are also provided in the cavity, one end of any elastic piece is clamped with the first clamping position, and the other end is clamped with the second clamping position; the transmission rod is movably connected with a handle, a plurality of clamping parts are provided in the handle, a first slope is provided on each of the plurality of clamping parts, correspondingly, a second slope, a clamping groove and a channel with the same number as the clamping parts are provided on the transmission rod, an activity space for the clamping parts to move is provided in the transmission rod, a groove is provided at the bottom end of the activity space, and a first elastic device is provided in the groove, and the first elastic device always pushes the clamping parts away from the groove; a moving contact plate is also provided in the cavity, one end of the moving contact plate is abutted with a second elastic device that always pushes the moving contact plate towards the static contact; static contact bolts are respectively connected to both sides of the housing, one end of any static contact bolt is arranged in the cavity of the housing, and at least one static contact bolt is connected with an insurance device.
[0005] Preferably, an insulating gasket that abuts against the end of the insurance device away from the housing is connected to the static contact bolt.
[0006] Preferably, the insulating gasket is made of plastic.
[0007] Preferably, the insurance device is a square fuse.
[0008] Preferably, the first elastic device is a mushroom head spring.
[0009] Preferably, the second elastic device is a reaction spring.
[0010] Advantages of the present utility model: The present utility model is an emergency power-off switch with an insurance device, which avoids the need to install an insurance device separately when installing an emergency power-off switch, saving time and effort. It automatically detects the magnitude of the current and realizes the function of emergency automatic power-off, preventing short-circuit damage of devices such as motors caused by excessive current.
[0011] The emergency power-off switch and the insurance device cooperate with each other to jointly provide safety insurance for the equipment. The insurance device is mainly responsible for continuously monitoring and protecting the current in the circuit, automatically cutting off the circuit when the current abnormally increases, while the emergency power-off switch provides a more proactive means of emergency stop, allowing the operator to quickly cut off the power supply or stop the operation of the equipment in case of an emergency. The synergistic effect of the two can further improve the safety and reliability of the electrical system. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic structural view of the present utility model;
[0013] Figure 2 is one of the top views of the present utility model;
[0014] Figure 3 is a sectional view along the Figure 2 A-A line in;
[0015] Figure 4 is the second top view of the present utility model;
[0016] Figure 5 is a sectional view along the Figure 4 B-B line in;
[0017] Figure 6 is the top view of the handle, transmission rod and first elastic device;
[0018] Figure 7 is a sectional view along the Figure 6 C-C line in;
[0019] Figure 8 is a schematic structural view of the handle;
[0020] Figure 9 is one of the schematic structural views of the transmission rod;
[0021] Figure 10 is the second schematic structural view of the transmission rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] As shown in Figures 1-10As shown in the figure, an emergency power-off switch includes a housing 1. A cavity 2 is provided inside the housing 1. A transmission rod 3 is movably connected inside the cavity 2. A first clamping position 4 is provided on each of the left and right sides of the transmission rod 3. Two elastic pieces 5 and two second clamping positions 6 respectively provided on the left and right inner walls of the cavity 2 are also provided inside the cavity 2. One end of any elastic piece 5 is clamped with the first clamping position 4, and the other end is clamped with the second clamping position 6. When the transmission rod 3 moves inside the cavity 2, the transmission rod 3 drives one end of the elastic piece 5 to move together, changing the bending direction of the elastic piece 5.
[0023] A handle 7 is movably connected to the transmission rod 3. A number of clamping parts 8 are provided inside the handle 7. A first slope 9 is provided on each of the number of clamping parts 8. Correspondingly, a second slope 10, a clamping groove 11 and a channel 12 with the same number as the clamping parts 8 are provided on the transmission rod 3. An activity space 13 for the clamping parts 8 to move is provided inside the transmission rod 3. A groove 14 is provided at the bottom end of the activity space 13. A first elastic device 15 is provided inside the groove 14. The first elastic device 15 always pushes the clamping parts 8 in a direction away from the groove 14. The method of installing the handle 7 on the transmission rod 3 is as follows: First, insert the clamping parts 8 into the activity space 13 along the channel 12. When the bottom end of the first slope 9 is slightly lower than the top end of the second slope 10, rotate the handle 7. At this time, the clamping parts 8 slide along the second slope 10 on the transmission rod 3 through their first slopes 9 until they reach the clamping groove 11. Under the pushing of the first elastic device 15, the clamping parts 8 cooperate with the clamping groove 11. The first elastic device 15 can prevent the clamping parts 8 from disengaging from the clamping groove 11.
[0024] A moving contact plate 16 is also provided in the cavity 2. One end of the moving contact plate 16 abuts against a second elastic device 17 that always pushes the moving contact plate 16 in a direction close to the static contact.
[0025] Static contact bolts 18 are respectively connected to both sides of the housing 1. One end of any static contact bolt 18 is provided in the cavity 2 inside the housing 1. And a safety device 19 is connected to at least one static contact bolt 18. The safety device 19 is a square fuse. When the rated current does not exceed the rated current of the square fuse, the current can smoothly pass through the square fuse for power transmission, enabling the connected equipment to work normally. For example, when the rated current is greater than the rated current of the fuse, the temperature rise continues to increase, and the metal wire inside the square fuse reaches the melting point and begins to melt, forming an open circuit, thereby quickly cutting off the circuit, being able to prevent the current from continuing to flow in a short time, and avoiding dangerous situations such as damage to other equipment and fires. An insulating gasket 20 made of plastic is connected to the static contact bolt 18 and abuts against the end of the safety device 19 away from the housing 1. When connecting the present utility model to the circuit, the wire can be wound between the insulating gasket 20 and the square fuse, which can ensure the successful connection between the wire and the square fuse, and the current can smoothly enter the emergency power-off switch via the square fuse.
[0026] Further, the first elastic device 15 is a mushroom head spring.
[0027] Further, the second elastic device 17 is a reaction spring.
[0028] When the utility model is connected to a circuit and the current normally passes through the fuse device 19 and the static contact bolt 18, at this time, the elastic sheet 5 bends upward, the elastic force of the elastic sheet 5 is upward, the transmission rod 3 is above the moving contact plate 16 and does not apply pressure to the moving contact plate 16. The moving contact plate 16 abuts against the two static contact bolts 18 under the pushing of the second elastic device 17, and the two static contact bolts 18 are connected through the moving contact plate 16. The handle 7 is in an upward state. In the above situation: the current passes through the fuse device 19, the static contact bolt 18, the moving contact plate 16, the other static contact bolt 18 in sequence and finally flows out.
[0029] When an emergency occurs and the circuit needs to be disconnected, the staff presses the handle 7, and the elastic sheet 5 is bent downward under the force. At this time, the elastic force of the elastic sheet 5 is downward, so that the transmission rod 3 moves downward and pushes the moving contact plate 16 downward. At this time, the moving contact plate 16 moves downward to disconnect the connection between the two static contact bolts 18. In the above situation: the current passes through the fuse device 19 and the static contact bolt 18 and then stops, ensuring that the circuit is in an open state.
[0030] In summary, the beneficial effects of the utility model are as follows: the emergency power-off switch and the fuse device 19 cooperate with each other to jointly provide safety insurance for the equipment. The fuse device 19 is mainly responsible for continuously monitoring and protecting the current in the circuit, and automatically cutting off the circuit when the current abnormally increases. The emergency power-off switch provides a more active emergency stop means, allowing the operator to quickly cut off the power supply or stop the operation of the equipment in an emergency. The synergistic effect of the two can further improve the safety and reliability of the electrical system.
[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, simple modifications and substitutions by ordinary technicians in the field are within the protection scope of the utility model.
Claims
1. An emergency power off switch, characterized in that: The invention comprises a shell, a cavity is provided in the shell, a transmission rod is movably connected in the cavity, a first clamping position is provided on each of the left and right sides of the transmission rod, two spring pieces and two second clamping positions are respectively provided on the left and right sides of the inner wall of the cavity, one end of any spring piece is engaged with the first clamping position, and the other end is engaged with the second clamping position; the transmission rod is movably connected with a handle, a plurality of clamping parts are provided in the handle, and a first slope is provided on each of the plurality of clamping parts, and correspondingly, the transmission rod is provided with a second slope, a clamping groove and a clamping groove having the same number as the clamping parts. A channel, a movable space for the engaging part to move is provided in the transmission rod, a groove is provided at the bottom end of the movable space, a first elastic device is provided in the groove, and the first elastic device always pushes the engaging part in the direction away from the groove; a movable touch plate is also provided in the cavity, and one end of the movable touch plate is abutted against a second elastic device that always pushes the movable touch plate in the direction close to the static contact; two sides of the shell are respectively connected with a static contact bolt, one end of any static contact bolt is arranged in the cavity in the shell, and at least one static contact bolt is connected with a safety device.
2. An emergency power off switch as claimed in claim 1, characterized in that: The static contact bolt is connected with an insulating gasket which abuts against one end of the safety device away from the housing.
3. An emergency power off switch as claimed in claim 2, characterized in that: The insulating gasket is made of plastic.
4. An emergency power off switch as claimed in claim 1, characterized in that: The safety device is a square fuse.
5. An emergency power off switch as claimed in claim 1, characterized in that: The first elastic device is a mushroom head spring.
6. An emergency power off switch as claimed in claim 1, characterized in that: The second elastic device is a reaction spring.