Electric actuator capable of automatically switching between electric mode and electric mode

Abstract

The utility model discloses a flashlight automatic switching electric actuator which comprises a main body and a hand wheel, the main body is provided with a rotating shaft, the hand wheel is arranged on the rotating shaft in a rotating mode, the rotating shaft is provided with a connecting protrusion, and the hand wheel is provided with a connecting groove matched with the connecting protrusion. The main body is fixedly provided with a magnetic attraction seat, the hand wheel is fixedly provided with a metal sheet, the main body is further fixedly provided with an elastic piece, and one end of the elastic piece abuts against the hand wheel. The magnetic attraction seat can limit the hand wheel when powered on, the magnetic attraction seat does not limit the hand wheel any more when power is cut off, the hand wheel can be connected with the rotating shaft when the hand wheel can be pushed through the elastic piece, and therefore the electric actuator can be automatically switched into the manual actuator, and the manual actuator has the effect that operation can be conducted without the need for a worker to browse a specification.

Description

Technical Field

[0001] The present application relates to the field of actuators, and in particular to a flashlight automatic switching electric actuator. Background Art

[0002] The actuator is a common device in the field of automatic control, generally used for the on-off control of valves. The valve can be automatically controlled locally or remotely through the controller. It is widely used in chemical, petroleum, hydropower and other fields.

[0003] Currently, electric actuators are generally equipped with a manual actuator such as a handwheel to ensure that the actuator can operate normally in the event of a power outage. In order to prevent the handwheel from rotating when the actuator is working, the actuator and handwheel are often designed to be separated.

[0004] When a power outage occurs, the operator needs to manually connect the handwheel to the actuator to manually operate the actuator. However, since power outages rarely occur, the operator is not very skilled in connecting the handwheel to the actuator and needs to refer to the manual before operating. Utility Model Content

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a flashlight automatic switching electric actuator, which can automatically connect the handwheel to the actuator after a power outage.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] A flashlight automatic switching electric actuator includes a main body and a handwheel, the main body has a rotating shaft, the handwheel is rotatably arranged on the rotating shaft, the rotating shaft has a connecting protrusion, and the handwheel is provided with a connecting groove adapted to the connecting protrusion; the main body is fixed with a magnetic seat, the handwheel is fixed with a metal sheet, and the main body is also fixed with an elastic member, one end of the elastic member abuts against the handwheel.

[0008] Preferably, an anti-slip portion is fixed to the end of the connecting protrusion away from the handwheel.

[0009] Preferably, the main body is further provided with an anti-accidental touch box for limiting the rotation of the hand wheel, and the anti-accidental touch box is provided with a clearance groove for the hand wheel to slide.

[0010] Preferably, the anti-incorrect touch box includes a first box body fixed to the main body and a second box body slidably connected to the first box body, and the surface of the second box body can be flush with the surface of the anti-slip portion.

[0011] Preferably, a spring is connected between the second box body and the first box body, and the main body is further provided with a snap-fit component for connecting with the second box body.

[0012] Preferably, the snap-fit component includes a snap-fit portion fixed to the main body and a buckle portion fixed to the second box body, and the snap-fit portion can be connected to the buckle portion.

[0013] Preferably, the first box body is provided with a guide groove for the sliding of the buckling portion.

[0014] Preferably, the connecting groove has a rounded corner on a side facing the connecting protrusion.

[0015] In summary, the present invention has the following beneficial technical effects:

[0016] The magnetic base can limit the handwheel when it is powered on. When the power is off, the magnetic base no longer limits the handwheel, and the handwheel can be connected to the rotating shaft when the elastic part is used to push the handwheel, thereby realizing automatic switching from electric actuator to manual actuator. It is simple and quick, and the staff can operate it without reading the instruction manual. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a structural diagram of the hand wheel and the anti-mistouch box in the utility model.

[0019] Figure 3 This is a schematic diagram of the exploded structure of the hand wheel and the anti-mistouch box in the utility model. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the exploded structure of the hand wheel and the anti-mistouch box in the utility model. Figure 2 .

[0021] Explanation of the accompanying reference numerals: 1. Main body; 11. Rotating shaft; 12. Connecting protrusion; 13. Anti-slip portion; 14. Magnetic seat; 15. Elastic member; 2. Handwheel; 21. Connecting groove; 3. Anti-accidental touch box; 31. Giving way groove; 32. First box body; 33. Second box body; 34. Buckle component; 341. Guide groove; 342. Snap connection portion; 343. Buckle connection portion. DETAILED DESCRIPTION

[0022] The terms "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may vary depending on their location or usage. Therefore, these or other directional terms should not be interpreted as restrictive. In addition, the terms "first," "second," "third," and similar expressions are used only for descriptive and distinguishing purposes and should not be understood to indicate or imply the relative importance of the corresponding components.

[0023] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0024] The embodiment of the present application discloses a flashlight automatic switching electric actuator.

[0025] Reference Figures 1-4 A flashlight automatic switching electric actuator includes a main body 1 and a manual operating device. The main body 1 is the main structure of the actuator, such as an electric motor that provides power, a reducer that reduces the speed and increases the output torque, a position feedback device that monitors and feeds back the position information of the actuator, a controller that processes signals and controls the motor, a torque limiting mechanism that protects the actuator and valve, a junction box for connecting power and signal lines, and a shell that protects internal components. These structures are existing technologies and are not described in detail. The manual operating device is a handwheel 2. In the initial state, the handwheel 2 will not rotate with the rotation of the rotating shaft 11 of the motor.

[0026] The handwheel 2 is rotatably arranged on the rotating shaft 11 and can slide relative to the axial direction of the rotating shaft 11. The rotating shaft 11 has a connecting protrusion 12, and the handwheel 2 has a connecting groove 21 that is adapted to the connecting protrusion 12; when the connecting groove 21 is connected to the connecting protrusion 12, the rotation of the handwheel 2 can drive the rotating shaft 11 to rotate, thereby realizing manual control.

[0027] The main body 1 is fixed with a magnetic base 14. The rod of the handwheel 2 is made of metal. In other embodiments, the rod can also be made of non-metallic materials and only need to fix a metal sheet to the rod. When the base is powered, it can attract the handwheel 2, so that the handwheel 2 can be fixed to the main body 1. When the rotating shaft 11 rotates, the handwheel 2 will not rotate.

[0028] The main body 1 is also fixed with an elastic member 15, which is a spring, and one end of the elastic member 15 abuts against the handwheel 2. The elastic member 15 is in a power storage state. When the actuator loses power, the magnetic seat 14 no longer attracts the handwheel 2, and the elastic member 15 will push the handwheel 2 to move toward the connecting protrusion 12 of the rotating shaft 11. Since the elastic member 15 only abuts against the handwheel 2, when the connecting groove 21 of the handwheel 2 is connected to the connecting protrusion 12, the stored force of the elastic member 15 is released, and the elastic member 15 will not have much effect on the rotation of the handwheel 2. The connecting groove 21 has a rounded corner on the side facing the connecting protrusion 12. Due to the existence of the rounded corner, the connecting protrusion 12 can easily enter the connecting groove 21 during the movement of the handwheel 2. In this way, when the power is off, the electric actuator automatically switches to a manual actuator.

[0029] Preferably, an anti-slip portion 13 is fixed to one end of the connecting protrusion 12 away from the hand wheel 2 , and the anti-slip portion 13 can prevent the hand wheel 2 from being detached from the rotating shaft 11 .

[0030] The main body 1 is also provided with an anti-accidental touch box 3 that limits the rotation of the handwheel 2. The anti-accidental touch box 3 has a clearance groove 31 for the sliding of the handwheel 2. The clearance groove 31 prevents the handwheel 2 from rotating relative to the rotating shaft 11, while allowing it to slide along the axis of the rotating shaft 11. The groove wall of the clearance groove 31 limits the rotation of the handwheel 2, thereby achieving the effect of preventing accidental touch.

[0031] The anti-accidental touch box 3 includes a first box body 32 and a second box body 33. The first box body 32 is fixed to the main body 1, and the second box body 33 is slidably connected to the first box body 32. The surface of the second box body 33 can be flush with the surface of the anti-slip portion 13. When the electric actuator is working, the rotating shaft 11 rotates, and the anti-slip portion 13 also rotates. Since the surface of the second box body 33 is flush with the surface of the anti-slip portion 13, on the one hand, it is possible to see whether the anti-slip portion 13 is rotating, thereby determining whether the electric actuator is working, and on the other hand, it can reduce the impact on the anti-slip portion 13. In other embodiments, the anti-slip portion 13 can also be recessed in the surface of the second box body 33.

[0032] A spring connects the second housing 33 to the first housing 32. The main body 1 is also provided with a snap-fit component 34 for connecting to the second housing 33. The snap-fit component 34 includes a snap-fit portion 342 fixed to the main body 1 and a snap-fit portion 343 fixed to the second housing 33. The snap-fit portion 342 is capable of connecting with the snap-fit portion 343. The first housing 32 is provided with a guide slot 341 for the snap-fit portion 343 to slide. In this application, the guide slot 341 is interconnected with the clearance slot 31.

[0033] The implementation principle of the embodiment is as follows: after the actuator is powered off, the magnetic base 14 no longer limits the handwheel 2, and the elastic member 15 pushes the handwheel 2 toward the connecting protrusion 12 of the rotating shaft 11, so that the connecting groove 21 of the handwheel 2 is connected to the connecting protrusion 12, thereby realizing the automatic switching from the electric actuator to the manual actuator state, and then, the second box body 33 is pushed so that the second box body 33 no longer limits the rotation of the handwheel 2, and the buckle part 343 of the second box body 33 is connected to the clamping part 342 of the main body 1. At this time, rotating the handwheel 2 can cause the rotating shaft 11 to rotate, thereby operating the manual actuator.

[0034] When the power is restored, the engaging portion 342 is toggled to separate the buckle portion 343 from the engaging portion 342. Under the action of the spring, the second box 33 is reset to restrict the movement of the handwheel 2. Before this, the rod of the handwheel 2 is aligned with the clearance groove 31, which facilitates the stem of the handwheel 2 to enter the clearance groove 31 of the anti-incorrect touch box 3. Then, the handwheel 2 is pushed, and the rod of the handwheel 2 is attracted by the magnetic seat 14. This separates the connecting groove 21 of the handwheel 2 from the connecting protrusion 12 of the rotating shaft 11.

[0035] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application; therefore, according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation methods. Therefore, the above specific implementation methods and drawings are only illustrative descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction on the technical solution of the present invention. Therefore: All equivalent changes made in accordance with the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A flashlight automatic switching electric actuator, comprising a main body (1) and a hand wheel (2), characterized in that: The main body (1) has a rotating shaft (11), the hand wheel (2) is rotatably arranged on the rotating shaft (11), the rotating shaft (11) has a connecting protrusion (12), and the hand wheel (2) is provided with a connecting groove (21) adapted to the connecting protrusion (12); the main body (1) is fixed with a magnetic seat (14), the hand wheel (2) is fixed with a metal sheet, and the main body (1) is also fixed with an elastic member (15), and one end of the elastic member (15) abuts against the hand wheel (2).

2. The flashlight automatic switching electric actuator according to claim 1, characterized in that: An anti-slip portion (13) is fixed to one end of the connecting protrusion (12) away from the hand wheel (2).

3. The flashlight automatic switching electric actuator according to claim 2, characterized in that: The main body (1) is further provided with an anti-mistaken touch box (3) for limiting the rotation of the hand wheel (2), and the anti-mistaken touch box (3) is provided with a clearance groove (31) for the hand wheel (2) to slide.

4. The flashlight automatic switching electric actuator according to claim 3, characterized in that: The anti-misoperation box (3) comprises a first box body (32) fixed to the main body (1) and a second box body (33) slidably connected to the first box body (32), wherein the surface of the second box body (33) is flush with the surface of the anti-slip portion (13).

5. The flashlight automatic switching electric actuator according to claim 4, characterized in that: A spring is connected between the second box body (33) and the first box body (32), and the main body (1) is further provided with a snap-fit component (34) for connecting with the second box body (33).

6. The flashlight automatic switching electric actuator according to claim 5, characterized in that: The snap-fit component (34) comprises a snap-fit portion (342) fixed to the main body (1) and a buckle portion (343) fixed to the second box body (33); the snap-fit portion (342) can be connected to the buckle portion (343).

7. The flashlight automatic switching electric actuator according to claim 6, characterized in that: The first box body (32) is provided with a guide groove (341) for the buckling portion (343) to slide.

8. The flashlight automatic switching electric actuator according to claim 1, characterized in that: The connecting groove (21) has a rounded corner on a side facing the connecting protrusion (12).

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