An emergency stop switch

Abstract

The present invention discloses an emergency stop switch, belonging to the technical field of emergency stop switches. Existing emergency stop switches need to be manually reset. In some end-user devices, the emergency stop switch is often accidentally pressed, resulting in the device being unable to operate normally, and it is necessary for staff or maintenance personnel to go to the site specifically to reset the emergency stop switch. The present invention includes a fixed buckle with a hollow cavity, a top cover that can rotate and move up and down relative to the fixed buckle, a flower shaft arranged under the top cover, a shaft housing that can limit the stroke of the flower shaft, and an elastic member I that can drive the top cover to reset. Through continuous exploration and experiments, the present invention breaks the technical prejudice that existing emergency stop switches must be manually reset. The motor assembly of the present invention can drive the flower shaft to rotate, and then the elastic member I drives the flower shaft and the top cover to reset, thereby realizing the reset of the emergency stop switch, enabling the device to operate in a timely manner, improving the utilization rate of the device, and reducing the operation and maintenance costs.

Description

Technical Field

[0001] The present invention relates to an emergency stop switch, belonging to the technical field of emergency stop switches. Background Art

[0002] Chinese Patent (Publication No. CN 201222442Y) discloses a rotary reset emergency stop switch, which includes a housing, a pressing member provided at the upper end of the housing, a sliding member provided in the housing, and an electrical device provided at the lower end of the housing. The pressing member is connected to the top end of the sliding member, the sliding member is slidably connected to the housing, and a spring is provided between the sliding body and the housing. The housing is circular, and a buckle and a corresponding catch are provided between the outer wall of the sliding member and the inner wall of the housing, and the buckle moves relative to the catch along the axial and circumferential directions of the housing. The present invention has a compact structure, good sensitivity, easy reset, and relatively easy replacement of electrical terminals.

[0003] In the above solution, after the sliding member is pressed down, the switch button on the electrical terminal is pressed, so that the switch is turned off and the power supply is cut off. At this time, the buckle coincides with the bump, and the buckle catches the bump. Then the sliding member is rotated, the buckle is separated from the bump, and the elastic force of the spring causes it to reset, and the button of the switch is reset.

[0004] However, the above emergency stop switch needs to be manually reset. In some devices for end users, such as outdoor electrical cabinets, charging piles and other electrical equipment, the emergency stop switch is often accidentally pressed, resulting in the device being unable to be used normally, and it is necessary for staff or maintenance personnel to go to the site specifically to reset the emergency stop switch. The device cannot run in time, resulting in a significant reduction in the utilization rate of the device and an increase in operation and maintenance costs. Summary of the Invention

[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide an emergency stop switch that can be reset by a motor drive, so that the device applying it can run in time, improve the utilization rate of the device, and reduce the reset cost.

[0006] To achieve the above object, the technical solution of the present invention is as follows:

[0007] An emergency stop switch includes a fixed buckle with a hollow cavity, a top cover that can rotate and move up and down relative to the fixed buckle, a flower shaft provided below the top cover, a shaft housing that can limit the stroke of the flower shaft, and an elastic member I that can drive the top cover to reset;

[0008] The flower shaft passes through the elastic member I, and a pin is horizontally arranged at its lower end;

[0009] The pin is connected to the flower shaft through an elastic member II in a telescopic manner;

[0010] A pin hole through which the pin can pass is provided on the side wall of the shaft housing;

[0011] An electric motor assembly capable of driving the flower shaft to rotate is assembled inside the fixed buckle;

[0012] When the top cover is pressed, it can drive the flower shaft to move downward and compress the first elastic member at the same time;

[0013] Driven by the second elastic member, the pin can extend from the pin hole, so that the emergency stop switch remains in the stopped state;

[0014] When reset is required, the electric motor assembly drives the flower shaft to rotate. The pin of the flower shaft abuts against the side wall of the pin hole, causing the pin to retract from the pin hole. Furthermore, the first elastic member drives the flower shaft and the top cover to reset.

[0015] Through continuous exploration and experiments, the present invention breaks the technical prejudice that the existing emergency stop switch must be manually reset. The electric motor assembly of the present invention can drive the flower shaft to rotate, and then the first elastic member drives the flower shaft and the top cover to reset. The emergency stop switch of the present invention can be reset by driving the switch with an electric motor. Furthermore, the staff can remotely or remotely control the electric motor assembly to be energized and rotated, enabling the equipment using it to operate in time, improving the equipment utilization rate, and reducing the reset cost.

[0016] At the same time, the present invention realizes the positioning of the flower shaft through the pin and pin hole structure, can ensure that the emergency stop switch remains in the emergency stop state, and avoids the slippage of the flower shaft from the shaft housing. The structure is simple and practical, and the solution is practical.

[0017] Furthermore, the present invention is particularly suitable for equipment facing end users, such as outdoor electrical cabinets, charging piles and other electrical equipment. When the emergency stop switch is accidentally pressed, resulting in the equipment being unable to be used normally, the staff or operation and maintenance personnel can remotely control the electric motor assembly to be energized, and then realize the reset of the emergency stop switch, enabling the equipment to operate in time, improving the equipment utilization rate, and reducing the operation and maintenance cost.

[0018] As a preferred technical measure: The electric motor assembly is connected to a dial that can drive the flower shaft to rotate; the electric motor assembly can drive the dial to rotate, the dial drives the flower shaft to rotate, and the pin of the flower shaft abuts against the side wall of the pin hole, causing the pin to retract from the pin hole. Driving the flower shaft to rotate through the dial facilitates the implementation of the solution.

[0019] As a preferred technical measure: The electric motor assembly is assembled on the side of the flower shaft adjacent to it, and the extending direction of its rotating shaft is parallel to the axis direction of the flower shaft; a gear that is tooth-connected to the dial is fixedly connected to the lower end of the rotating shaft; several teeth are provided on the outer side wall of the dial. The electric motor assembly is fixedly connected to one side of the flower shaft, which is convenient for the lifting of the flower shaft, and drives the dial through the gear. The structure is simple and easy to implement.

[0020] As a preferred technical measure: the paddle is a hollow structure, which is sleeved on the outside of the flower shaft, and the hollow wall surface is separated from the outer wall surface of the flower shaft by a certain distance; the hollow wall surface of the paddle is provided with at least one protrusion 1, and the outer wall surface of the lower end of the flower shaft is provided with a protrusion 2 at a position matching the protrusion 1. The paddle is sleeved with the flower shaft, so that the force on the flower shaft is uniform, and the flower shaft rotates smoothly.

[0021] As an optimal technical measure: a button base is provided below the flower axis; a Hall element is provided at the upper end of the button base; the lower end of the flower axis is fixedly connected to a magnetic pressure plate that can cooperate with the Hall element. The solution is simple and easy to implement.

[0022] As a preferred technical measure: a groove for accommodating the paddle is provided at the lower end of the fixing buckle, and a cover plate for limiting the paddle is connected to the lower end thereof.

[0023] As the preferred technical measures:

[0024] The upper end surface of the top cover is provided with a pressing portion protruding outward, which is convenient for manually pressing the top cover; the fixing buckle is a cylindrical shell, and the flower shaft is a columnar structure; a driving source is installed adjacent to the flower shaft;

[0025] The driving source drives the flower shaft to rise and fall back and forth in the hollow cavity of the fixed buckle, thereby realizing the emergency stop of the switch.

[0026] The invention drives the flower axis to move through a driving source to realize an emergency stop of a switch, so that the equipment using the flower axis can be stopped in time.

[0027] The staff can then remotely or remotely control the power supply of the driving source, and then the driving source drives the flower axis to trigger the switch, so that the equipment using it can be stopped in time, saving shutdown time and gaining precious rescue time.

[0028] Furthermore, the present invention is particularly suitable for end-user equipment, such as escalators. In case of emergency, the staff can remotely control the driving source to energize and rotate, trigger the emergency stop switch, and stop the equipment in time to avoid greater casualties.

[0029] As the preferred technical measures:

[0030] The driving source is a rotating motor, and the rotating shaft of the rotating motor is provided with a transfer gear;

[0031] The outer wall of the flower shaft is provided with a thread, which is threadedly connected with a buckle, and the buckle is gear-connected with the transfer gear;

[0032] The rotating motor drives the transfer gear to rotate, which in turn drives the snap-fit ​​part to drive the flower shaft to move. The solution is feasible.

[0033] As a preferred technical measure: The buckle is a lead screw nut, and at least one section of the flower shaft is a lead screw, which converts the rotational motion of the buckle into the linear motion of the flower shaft.

[0034] As a preferred technical measure: The drive source is an electric push rod, which is assembled at the upper end of the flower shaft. Its fixed end is fixedly connected to the top cover, and its movable end is fixedly connected to the flower shaft. The solution is simple and practical.

[0035] Alternatively, the electric push rod is assembled on the side of the flower shaft. Its fixed end is fixedly connected to the fixed buckle, and its movable end is fixedly connected to the side wall of the flower shaft. Those skilled in the art can select the type of drive source and the assembly method according to the actual situation.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] Through continuous exploration and experiments, the present invention breaks the technical prejudice that the existing emergency stop switch must be manually reset. The motor assembly of the present invention can drive the flower shaft to rotate, and then the first elastic member drives the flower shaft and the top cover to reset. The emergency stop switch of the present invention can be reset by driving the switch with the motor. Furthermore, the staff can remotely or remotely control the motor assembly to be powered on and rotate, enabling the equipment applying it to operate in time, improving the equipment utilization rate, and reducing the reset cost.

[0038] At the same time, the present invention realizes the positioning of the flower shaft through the pin and pin hole structure, which can ensure that the emergency stop switch maintains the emergency stop state and prevent the flower shaft from slipping off the shaft shell. The structure is simple and practical, and the solution is practical.

[0039] Furthermore, the present invention is particularly suitable for equipment for end users, such as outdoor electrical cabinets, charging piles and other electrical equipment. When the emergency stop switch is accidentally pressed, resulting in the equipment being unable to be used normally, the staff or maintenance personnel can remotely control the motor assembly to be powered on, thereby realizing the reset of the emergency stop switch, enabling the equipment to operate in time, improving the equipment utilization rate, and reducing the operation and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a schematic diagram of a partial structure of the present invention;

[0042] Figure 3 It is an exploded schematic diagram of a partial structure of the present invention;

[0043] Figure 4 It is a partial sectional view of the present invention;

[0044] Figure 5 It is a sectional view of the present invention in an exploded state (without an electric emergency stop structure);

[0045] Figure 6 Schematic diagram of the assembly of the paddle and the flower shaft of the present invention;

[0046] Figure 7 Cross-sectional view of the present invention in an exploded state (with an added electric emergency stop structure).

[0047] Explanation of reference numerals:

[0048] 1. Top cover; 2. Shaft housing; 3. Fixed buckle; 4. Motor assembly; 5. Flower shaft; 6. Pin; 7. First elastic member; 8. Driving source; 9. Buckle member; 11. Button base; 12. Hall component; 13. Magnetic pressing plate; 14. Pressing portion; 15. Upper threaded sleeve; 16. Washer; 17. Lower threaded sleeve; 31. Groove; 41. Paddle; 42. Gear; 43. Cover plate; 411. First protrusion; 51. Second protrusion; 61. Second elastic member. Detailed implementation manners

[0049] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0050] On the contrary, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the essence and scope of the present invention defined by the claims. Further, in order to enable the public to better understand the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0051] It should be noted that when two elements are referred to as "fixedly connected", the two elements can be directly connected or there can also be intermediate elements. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "horizontal", "upper", "lower" and similar expressions used herein are only for the purpose of illustration.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art belonging to the technical field of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0053] As Figures 1-5 shown, an emergency stop switch includes a fixed buckle 3 with a hollow cavity, a top cover 1 that can rotate and move up and down relative to the fixed buckle 3, a flower shaft 5 disposed below the top cover 1, a shaft housing 2 that can limit the stroke of the flower shaft 5, and a first elastic member 7 that can drive the top cover 1 to reset;

[0054] The flower shaft 5 passes through the first elastic member 7, and a pin 6 is horizontally arranged at its lower end;

[0055] The pin 6 is connected to the flower shaft 5 through a second elastic member 61 in a telescopable manner;

[0056] A pin hole for passing the pin 6 is provided on the side wall of the shaft housing 2;

[0057] A motor assembly 4 capable of driving the flower shaft 5 to rotate is assembled in the inner cavity of the fixed buckle 3;

[0058] When the top cover 1 is pressed, it can drive the flower shaft 5 to move downward and compress the first elastic member 7 at the same time;

[0059] The pin 6 can extend from the pin hole under the drive of the second elastic member 61, so that the emergency stop switch remains in the stop state;

[0060] When reset is required, the motor assembly 4 drives the flower shaft 5 to rotate. The pin 6 of the flower shaft 5 abuts against the side wall of the pin hole, so that the pin 6 retracts from the pin hole. Furthermore, the first elastic member 7 drives the flower shaft 5 and the top cover 1 to reset.

[0061] Through continuous exploration and experiments, the present invention breaks the technical prejudice that the existing emergency stop switch must be manually reset. The motor assembly 4 of the present invention can drive the flower shaft 5 to rotate, and further the first elastic member 7 drives the flower shaft 5 and the top cover 1 to reset. The emergency stop switch of the present invention can be reset by driving the switch with a motor. Furthermore, the staff can remotely or remotely control the motor assembly 4 to be energized and rotated, which can make the equipment using it run in time, improve the equipment utilization rate, and reduce the reset cost.

[0062] At the same time, the present invention realizes the positioning of the flower shaft 5 through the pin 6 and the pin hole structure, which can ensure that the emergency stop switch remains in the emergency stop state and prevent the flower shaft 5 from slipping off the shaft housing 2. The structure is simple, practical, and the solution is feasible.

[0063] In order to ensure the normal movement of the top cover and the flower shaft, an upper thread sleeve 15, a washer 16, and a lower thread sleeve 17 can be arranged below it.

[0064] A specific embodiment of adding a dial 41 to the present invention: The motor assembly 4 is connected to a dial 41 capable of driving the flower shaft 5 to rotate; the motor assembly 4 can drive the dial 41 to rotate, the dial 41 drives the flower shaft 5 to rotate, and the pin 6 of the flower shaft 5 abuts against the side wall of the pin hole, so that the pin 6 retracts from the pin hole. Driving the flower shaft 5 to rotate through the dial 41 facilitates the implementation of the solution.

[0065] Embodiment of the assembly position of the motor assembly 4 of the present invention: The motor assembly 4 is assembled on the side adjacent to the spline shaft 5, and the extending direction of its rotating shaft is parallel to the axis direction of the spline shaft 5; A gear 42 that is tooth-connected to the paddle 41 is fixedly connected to the lower end of the rotating shaft; A plurality of teeth are provided on the outer side wall of the paddle 41. The motor assembly 4 is fixedly connected to one side of the spline shaft 5, which facilitates the lifting of the spline shaft 5 and drives the paddle 41 through the gear 42, with a simple structure and easy to implement.

[0066] A specific embodiment of the button structure of the present invention: A button base 11 is provided below the spline shaft 5; A Hall element 12 is provided at the upper end of the button base 11; A magnetic pressure plate 13 that can cooperate with the Hall element 12 is fixedly connected to the lower end of the spline shaft 5, with a simple solution and easy to implement.

[0067] A specific embodiment of the fixed buckle 3 of the present invention: A groove 31 for accommodating the paddle 41 is provided at the lower end of the fixed buckle 3, and a cover plate 43 for limiting the paddle 41 is connected to its lower end.

[0068] As Figure 6 As shown, a specific embodiment of the structure of the paddle 41 of the present invention: The paddle 41 is a hollow structure, which is sleeved outside the spline shaft 5, and a certain distance is separated between its hollow wall surface and the outer wall surface of the spline shaft 5; At least one protrusion 411 is provided on the hollow wall surface of the paddle 41, and a protrusion 51 is provided at the position where the lower end outer wall surface of the spline shaft 5 cooperates with the protrusion 411. The paddle 41 is sleeved with the spline shaft 5, so that the spline shaft 5 is uniformly stressed, and further the spline shaft 5 rotates smoothly.

[0069] A specific embodiment of the outer shape structure of each component of the present invention:

[0070] A pressing part 14 protruding outward is provided on the upper end surface of the top cover 1, which is convenient for manually pressing the top cover 1; The fixed buckle 3 is a cylindrical shell, and the spline shaft 5 is a columnar structure.

[0071] An application embodiment of the electric reset of the present invention:

[0072] When the present invention is applied to equipment for end users, such as outdoor electrical cabinets, charging piles and other electrical equipment, when the emergency stop switch is accidentally pressed, resulting in the equipment being unable to be used normally, the staff or operation and maintenance personnel can remotely control the motor assembly 4 to be powered on, thereby realizing the reset of the emergency stop switch, enabling the equipment to operate in time, improving the equipment utilization rate and reducing the operation and maintenance cost.

[0073] As Figure 7 As shown, a specific embodiment of the electric emergency stop of the present invention:

[0074] A drive source 8 is assembled adjacent to the spline shaft 5; The drive source 8 drives the spline shaft 5 to reciprocate up and down in the hollow cavity of the fixed buckle 3, thereby realizing the emergency stop of the switch.

[0075] The present invention drives the flower axis 5 to move through a driving source to realize an emergency stop of the switch, so that the equipment using the flower axis 5 can be stopped in time.

[0076] Then the staff can remotely or remotely control the power supply of the driving source, and then the driving source drives the flower axis 5 to trigger the switch, so that the equipment using it can be stopped in time, saving shutdown time and gaining precious rescue time.

[0077] The driving source 8 of the present invention is a specific embodiment of a rotating motor:

[0078] The driving source 8 is a rotary motor, and a transfer gear is provided on the rotating shaft of the rotary motor;

[0079] The outer wall of the flower shaft 5 is provided with a thread, which is threadedly connected with a buckle 9, and the buckle 9 is gear-connected with the transfer gear;

[0080] The rotating motor drives the transfer gear to rotate, and then drives the buckle 9 to drive the flower shaft 5 to move. The solution is feasible.

[0081] The buckle 9 is a lead screw nut, and at least one section of the flower shaft 5 is a lead screw, which converts the rotational motion of the buckle 9 into the linear motion of the flower shaft 5.

[0082] The driving source 8 of the present invention is a specific embodiment of an electric push rod: the driving source 8 is an electric push rod, which is assembled on the upper end of the flower axis 5, with its fixed end fixedly connected to the top cover 1 and its movable end fixedly connected to the flower axis 5. The solution is simple and practical.

[0083] Another specific embodiment of the present invention in which the driving source 8 is an electric push rod:

[0084] The electric push rod is assembled on the side of the flower shaft 5, with its fixed end fixedly connected to the fixed buckle 3, and its movable end fixedly connected to the side wall of the flower shaft 5. Those skilled in the art can select the type and assembly method of the driving source 8 according to actual conditions.

[0085] The electric emergency stop application embodiment of the present invention:

[0086] The present invention is applied to end-user oriented equipment, such as escalators. When encountering an emergency, the staff can remotely control the rotating motor to energize and rotate, triggering the emergency stop switch to stop the equipment in time, thus avoiding greater casualties and losses.

[0087] In the present application, the fixing method may be screw connection, welding, riveting, plug connection, or connection through a third component, and those skilled in the art may select the method according to actual conditions.

[0088] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An emergency stop switch, comprising a fixed buckle (3) with a hollow cavity, a top cover (1) capable of rotating and moving up and down relative to the fixed buckle (3), a flower shaft (5) arranged below the top cover (1), a shaft housing (2) capable of limiting the stroke of the flower shaft (5), and a first elastic member (7) capable of driving the top cover (1) to reset; It is characterized in that, The flower shaft (5) passes through the first elastic member (7), and a pin (6) is horizontally arranged at its lower end; The pin (6) is connected to the flower shaft (5) in a telescopic manner through a second elastic member (61); A pin hole capable of passing through the pin (6) is formed in the side wall of the shaft housing (2); A motor assembly (4) capable of driving the flower shaft (5) to rotate is assembled in the inner cavity of the fixed buckle (3); When the top cover (1) is pressed, it can drive the flower shaft (5) to move downward and simultaneously compress the first elastic member (7); The pin (6) can extend from the pin hole under the drive of the second elastic member (61), so that the emergency stop switch remains in a stopped state; When reset is required, the motor assembly (4) drives the flower shaft (5) to rotate, and the pin (6) of the flower shaft (5) abuts against the side wall of the pin hole, so that the pin (6) retracts from the pin hole, and then the first elastic member (7) drives the flower shaft (5) and the top cover (1) to reset; The motor assembly (4) is connected to a paddle (41) capable of driving the flower shaft (5) to rotate; the motor assembly (4) can drive the paddle (41) to rotate, the paddle (41) drives the flower shaft (5) to rotate, and the pin (6) of the flower shaft (5) abuts against the side wall of the pin hole, so that the pin (6) retracts from the pin hole; the motor assembly (4) is assembled adjacent to the side of the flower shaft (5), and the extending direction of its rotating shaft is parallel to the axis direction of the flower shaft (5); a gear (42) engaged with the paddle (41) is fixedly connected to the lower end of the rotating shaft; several teeth are arranged on the outer side wall of the paddle (41).

2. An emergency stop switch according to claim 1, It is characterized in that, The paddle (41) is of a hollow structure, sleeved outside the flower shaft (5), and there is a certain distance between its hollow wall surface and the outer wall surface of the flower shaft (5); at least one first protrusion (411) is arranged on the hollow wall surface of the paddle (41), and a second protrusion (51) is arranged at the position on the lower outer wall surface of the flower shaft (5) that cooperates with the first protrusion (411).

3. An emergency stop switch according to any one of claims 1-2, It is characterized in that, A button base (11) is arranged below the flower shaft (5); a Hall element (12) is arranged at the upper end of the button base (11); a magnetic pressing plate (13) capable of cooperating with the Hall element (12) is fixedly connected to the lower end of the flower shaft (5).

4. An emergency stop switch according to claim 3, It is characterized in that, A groove (31) for accommodating the paddle (41) is formed at the lower end of the fixed buckle (3), and a cover plate for limiting the paddle (41) is connected to its lower end.

5. An emergency stop switch according to claim 4, It is characterized in that, A pressing part (14) protruding outward is arranged on the upper end surface of the top cover (1); the fixed buckle (3) is a cylindrical shell, and the flower shaft (5) is a columnar structure; a driving source (8) is assembled adjacent to the flower shaft (5); The driving source (8) drives the flower shaft (5) to reciprocate up and down in the hollow cavity of the fixed buckle (3), thereby realizing the emergency stop of the switch.

6. An emergency stop switch according to claim 5, wherein, the driving source (8) is a rotary motor, and a transfer gear is provided on the rotating shaft of the rotary motor; a thread is provided on the outer side wall of the flower shaft (5), and a buckle member (9) is screwed thereon, and the buckle member (9) is in tooth engagement with the transfer gear; The rotary motor drives the transfer gear to rotate, thereby driving the buckle member (9) to drive the flower shaft (5) to move.

7. An emergency stop switch according to claim 6, wherein, the buckle member (9) is a lead screw nut, and at least one section of the flower shaft (5) is a lead screw, converting the rotary motion of the buckle member (9) into the linear motion of the flower shaft (5).

8. An emergency stop switch according to claim 5, wherein, the driving source (8) is an electric push rod, the electric push rod is assembled at the upper end of the flower shaft (5), its fixed end is fixedly connected to the top cover (1), and its movable end is fixedly connected to the flower shaft (5); or the electric push rod is assembled on the side of the flower shaft (5), its fixed end is fixedly connected to the fixed buckle (3), and its movable end is fixedly connected to the side wall of the flower shaft (5).

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