Electromagnetic drive type rotary telescopic mechanism

Abstract

The utility model discloses an electromagnetic drive type rotary telescopic mechanism which comprises a controller, a fixed iron core assembly and a movable iron core assembly. The controller is used for controlling the magnetic field of the fixed iron core assembly to drive the movable iron core assembly to rotate; a first cam structure is arranged at one end of the movable iron core assembly; a second cam structure meshed with the first cam structure is arranged at one end of the telescopic rod assembly; the telescopic rod assembly is driven by the movable iron core assembly to do linear motion. The controller enables the fixed iron core assembly to be powered on, the movable iron core assembly rotates rapidly under the action of a magnetic field, and the telescopic rod assembly is driven to stretch out and draw back through the first cam structure. And after a preset position is reached, the controller powers off the fixed iron core assembly, and the movable iron core is still firmly fixed under the action of the self-locking structure at the bottom of the cavity of the fixed iron core. The controller controls power-on and power-off of a fixed iron core coil in the fixed iron core assembly through a power source and a circuit, the direction and the intensity of a magnetic field are controlled by controlling the direction and the magnitude of current, and meanwhile the purpose of saving energy can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to an electromagnetic-driven rotary telescopic mechanism. Background Art

[0002] Existing solenoid valves usually use electromagnetic drive to achieve the opening and closing of valves. However, these drive methods have deficiencies in control accuracy, response speed, and energy consumption. Especially for occasions that require fast response and precise positioning, traditional drive methods are difficult to meet the requirements. In the current prior art, after electromagnetic drive, power cannot be cut off, and it can only be powered on to maintain, resulting in high energy consumption. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an electromagnetic-driven rotary telescopic mechanism to overcome the problem of the lack of an effective locking mechanism when an electromagnetic force drives a valve while meeting low energy consumption in the prior art.

[0004] The utility model solves the above technical problem through the following technical solutions:

[0005] An electromagnetic-driven rotary telescopic mechanism includes: an electromagnetic drive assembly and a telescopic rod assembly. The electromagnetic drive assembly includes a controller, a fixed iron core assembly, and a moving iron core assembly; the controller is used to control the magnetic field of the fixed iron core assembly to drive the moving iron core assembly to rotate.

[0006] One end of the moving iron core assembly is provided with a first cam structure.

[0007] The telescopic rod assembly, one end of the telescopic rod assembly is provided with a second cam structure meshing with the first cam structure; the telescopic rod assembly makes a linear motion under the drive of the moving iron core assembly.

[0008] The fixed iron core assembly includes a fixed iron core and a self-locking structure, and the self-locking structure is a convex structure arranged on the upper end surface of the bottom of the fixed iron core to fix the moving iron core.

[0009] The controller energizes the fixed iron core assembly, the moving iron core assembly rotates rapidly under the action of the magnetic field, and drives the telescopic rod assembly to expand and contract through the first cam structure. After reaching the predetermined position, the controller cuts off the power supply of the fixed iron core assembly, and the moving iron core is still firmly fixed under the action of the self-locking structure at the bottom of the cavity of the fixed iron core. When operating again, the controller energizes the fixed iron core, and the generated magnetic force overcomes the self-locking force, and the moving iron core rotates to the corresponding position, driving the telescopic rod to expand and contract. The controller controls the energization and power-off of the fixed iron core coil in the fixed iron core assembly through the power supply and the circuit, and controls the direction and magnitude of the current to achieve the control of the direction and intensity of the magnetic field, and at the same time can achieve the purpose of energy saving.

[0010] Preferably, the moving iron core assembly includes a main shaft and a moving iron core, and the moving iron core rotates around the main shaft under the drive of the fixed iron core assembly.

[0011] The moving iron core is installed on the main shaft. The moving iron core and the main shaft can be integrally formed or connected by a connecting member.

[0012] Preferably, a sleeve is provided on the main shaft, and the fixed iron core assembly is fixed on the main shaft through the sleeve, and the moving iron core is located within the magnetic field formed by the fixed iron core assembly.

[0013] In this solution, the fixed iron core assembly and the moving iron core are coaxially arranged. The fixed iron core assembly is fixed to the top of the main shaft through a sleeve and remains fixed when the main shaft rotates. When the fixed iron core assembly is energized, the moving iron core is within the magnetic field formed by the fixed iron core assembly and rotates under the action of the magnetic field.

[0014] Preferably, the moving iron core is of a sector structure and rotates freely within the arc-shaped cavity formed by the fixed iron core assembly.

[0015] In this solution, the moving iron core can be a symmetric sector structure and rotates freely within the symmetric arc-shaped cavity formed by the fixed iron core assembly.

[0016] Preferably, a first cam structure is provided at one end of the main shaft; the first cam structure is a sine structure.

[0017] Preferably, the telescopic rod assembly includes a chute and an elastic component, and the chute is used to accommodate the main shaft for sliding.

[0018] Preferably, a groove for engaging with the convex structure is provided at the bottom of the moving iron core.

[0019] In this solution, through the engaging structure, the precise fit between the moving iron core and the convex structure can be ensured, thereby improving the positioning accuracy of the overall assembly.

[0020] Preferably, the self-locking structure further includes an elastic member provided below the convex structure.

[0021] In this solution, the elastic member is provided to provide an additional locking force, ensuring a firmer engagement between the convex structure and the groove, preventing accidental disengagement without external force, and improving the safety and reliability of the structure.

[0022] Preferably, the convex structure is arc-shaped.

[0023] In this solution, a smooth transition can be provided when the moving iron core moves, reducing resistance and making the dynamic response of the entire mechanism faster and more accurate.

[0024] The positive effects of the present utility model are as follows:

[0025] The controller energizes the fixed iron core assembly. Under the action of the magnetic field, the moving iron core assembly rotates rapidly, and drives the telescopic rod assembly to expand and contract through the first cam structure. After reaching the predetermined position, the controller cuts off the power supply to the fixed iron core assembly, and the moving iron core locks its position under the action of the self-locking structure at the bottom of the cavity of the fixed iron core. When operating again, the controller energizes the fixed iron core, and the generated magnetic force overcomes the self-locking force, and the moving iron core rotates to the corresponding position, driving the telescopic rod to expand and contract. The controller controls the energization and power-off of the fixed iron core coil in the fixed iron core assembly through the power supply and the circuit, and controls the direction and magnitude of the current to achieve the control of the direction and intensity of the magnetic field. Description of the Drawings

[0026] Figure 1 Figure showing the structure of the electromagnetic drive type rotary telescopic mechanism according to an embodiment of the present application;

[0027] Figure 2 Exploded view of the electromagnetic drive type rotary telescopic mechanism according to an embodiment of the present application;

[0028] Figure 3 Another exploded view of the electromagnetic drive type rotary telescopic mechanism according to an embodiment of the present application;

[0029] Figure 4 Cross-sectional view of the electromagnetic drive type rotary telescopic mechanism according to an embodiment of the present application.

[0030] Reference Signs:

[0031] Fixed iron core assembly 2

[0032] Fixed iron core 21

[0033] Self-locking structure 22

[0034] Protrusion structure 221

[0035] Elastic member 222

[0036] Moving iron core assembly 3

[0037] First cam structure 31

[0038] Moving iron core 32

[0039] Main shaft 33

[0040] Groove 34

[0041] Telescopic rod assembly 4

[0042] Second cam structure 41

[0043] Chute 42

[0044] Elastic component 43 Detailed Description of the Embodiment

[0045] The present utility model will be further described below by way of embodiments, but the present utility model is not limited to the scope of the embodiments accordingly.

[0046] An electromagnetic drive type rotary telescopic mechanism, as Figures 1 - 4 shown, includes: an electromagnetic drive assembly, a telescopic rod assembly 4. The electromagnetic drive assembly includes a controller, a fixed iron core assembly 2, and a moving iron core assembly 3. The controller is used to control the magnetic field of the fixed iron core assembly 2 to drive the moving iron core assembly 3 to rotate. The fixed iron core assembly 2 serves as a carrier of the electromagnetic field and is made of a non-magnetic material to avoid itself becoming a part of the magnetic circuit. A coil is embedded inside the fixed iron core 21, and the coil is tightly wound around the fixed iron core 21 through a wire. When the controller energizes the coil, the current in the coil generates a magnetic field, and this magnetic field acts on the moving iron core 32 to drive it to rotate quickly. By controlling the on-off of the coil and the direction of the current by the controller, the generation, intensity, and direction of the magnetic field can be controlled, so as to achieve precise control of the rotation of the moving iron core 32.

[0047] One end of the moving iron core assembly 3 is provided with a first cam structure 31. Among them, the moving iron core 32 is made of a high magnetic permeability material and has high sensitivity to the magnetic field.

[0048] One end of the telescopic rod assembly 4 is provided with a second cam structure 41 that meshes with the first cam structure 31. The telescopic rod assembly 4 makes a linear motion under the drive of the moving iron core assembly 3. The moving iron core 32 is located in the magnetic field of the fixed iron core 21. When the fixed iron core 21 is energized to generate a magnetic field, the moving iron core 32 is affected by the magnetic field force and rotates. The first cam structure 31 and the second cam structure 41 convert the rotational motion of the moving iron core 32 into a linear motion of the telescopic rod to make the telescopic rod extend or retract.

[0049] As Figures 1 - 4 shown, the controller energizes the coil of the fixed iron core 21, and the moving iron core 32 quickly rotates 90 degrees under the action of the magnetic field, and pushes the telescopic rod assembly 4 to extend through the first cam structure 31. After reaching the predetermined position, the controller cuts off the power supply to the fixed iron core assembly 2, and the moving iron core 32 is still firmly fixed under the action of the self-locking structure 22 at the bottom of the cavity of the fixed iron core 21. The controller energizes the coil of the fixed iron core 21 again and changes the direction or intensity of the magnetic field, so that the moving iron core 32 rotates 90 degrees in the reverse direction, and drives the telescopic rod assembly 4 to retract through the first cam structure 31. After retracting, the controller cuts off the power supply to the fixed iron core 21, and the moving iron core 32 is still firmly fixed under the action of the self-locking structure 22 at the bottom of the cavity of the fixed iron core 21. As Figure 2 shown, the self-locking structure 22 is a convex structure 221 provided on the upper end surface at the bottom of the cavity of the fixed iron core 21 to fix the moving iron core 32. As Figure 2As shown in the figure, in this embodiment, there are two convex structures 221, which are fixed at the upper end face of the bottom of the cavity of the fixed iron core 21, and the installation positions are respectively where the moving iron core 32 is stationary. The convex structure 221 is installed on the fixed iron core 21 through a shaft, and a spring 222 is sleeved outside the shaft. The convex structure 221 here is a spherical surface.

[0050] Preferably, the moving iron core assembly 3 includes a main shaft 33 and a moving iron core 32, and the moving iron core 32 rotates around the main shaft 33 under the drive of the fixed iron core assembly 2.

[0051] The moving iron core 32 is installed on the main shaft 33. The moving iron core 32 and the main shaft 33 can be integrated or connected through a connecting member.

[0052] Preferably, a sleeve is provided on the main shaft 33, and the fixed iron core assembly 2 is fixed on the main shaft 33 through the sleeve, and the moving iron core 32 is located in the magnetic field formed by the fixed iron core assembly 2. As Figure 3 shown, a first sleeve is provided at the top of the moving iron core 32, and a second sleeve is provided at the bottom of the moving iron core 32. The fixed iron core assembly 2 and the moving iron core 32 are coaxially arranged, and the fixed iron core assembly 2 is fixed on the main shaft 33 through a sleeve and remains fixed when the main shaft 33 rotates. When the fixed iron core assembly 2 is energized, the moving iron core 32 is in the magnetic field formed by the fixed iron core assembly 2 and rotates under the action of the magnetic field.

[0053] Preferably, the moving iron core 32 is a fan-shaped structure and rotates freely in the arc cavity formed by the fixed iron core assembly 2. As Figure 2 shown, the moving iron core 32 is a centrally symmetric fan-shaped structure and rotates freely in the centrally symmetric arc cavity formed by the fixed iron core assembly 2. At this time, the rotation angle of the moving iron core assembly 3 is 90 degrees.

[0054] Preferably, a first cam structure 31 is provided at one end of the main shaft 33; the first cam structure 31 is a sine structure, that is, the convex contour line is sinusoidal. As Figure 2 shown, the first cam structure 31 and the second cam structure 41 are symmetrically provided with mutually meshing sine protrusions, and the boundary of the protrusion is a complete half-cycle sine curve.

[0055] Preferably, the telescopic rod assembly 4 includes a chute 42 and an elastic component 43. The chute 42 is used to accommodate the main shaft 33 for sliding, and the movement range of the main shaft 33 is limited by setting the length of the chute 42. In addition, the telescopic rod can be composed of multiple sections of sleeves, and a spring is arranged at the end of the telescopic rod assembly 4 to provide elastic force when the telescopic rod retracts.

[0056] Preferably, a groove 34 engaged with the convex structure 221 is provided at the bottom of the moving iron core 32. Through the engaging structure, the precise fit between the moving iron core 32 and the convex structure 221 can be ensured, thereby improving the positioning accuracy of the overall assembly.

[0057] The self-locking structure 22 further includes an elastic member 222 disposed below the convex structure 221. The elastic member 222 is provided to provide an additional locking force, ensuring a firmer engagement between the convex structure 221 and the groove 34, preventing accidental disengagement without external force, and improving the safety and reliability of the structure. According to the requirement of the locking force, the self-locking structure can be symmetrically disposed on both sides of the stationary iron core.

[0058] The convex structure 221 is arc-shaped. It can provide a smooth transition when the moving iron core 32 moves, reduce resistance, and make the dynamic response of the entire mechanism more rapid and accurate.

[0059] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example. The protection scope of the present invention is defined by the appended claims. Without departing from the principle and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. An electromagnetically driven rotating telescopic mechanism, characterized in that: The electromagnetically driven rapid rotating telescopic mechanism comprises: An electromagnetic drive assembly, the electromagnetic drive assembly comprising a controller, a fixed iron core assembly, and a moving iron core assembly; the controller is used to control the magnetic field of the fixed iron core assembly to drive the moving iron core assembly to rotate; A first cam structure is provided at one end of the moving iron core assembly; A telescopic rod assembly, wherein one end of the telescopic rod assembly is provided with a second cam structure meshing with the first cam structure; the telescopic rod assembly performs linear motion under the drive of the moving iron core assembly; The fixed iron core assembly includes a fixed iron core and a self-locking structure, wherein the self-locking structure is a protruding structure arranged on the upper end surface of the bottom of the fixed iron core cavity to fix the moving iron core.

2. The electromagnetic driven rotating and telescopic mechanism according to claim 1, characterized in that: The moving iron core assembly comprises a main shaft and a moving iron core, and the moving iron core rotates around the main shaft under the driving of the fixed iron core assembly.

3. The electromagnetic driven rotating and telescopic mechanism according to claim 2, characterized in that: The main shaft is provided with a sleeve, the fixed iron core assembly is fixed on the main shaft through the sleeve, and the moving iron core is located in the magnetic field formed by the fixed iron core assembly.

4. The electromagnetic driven rotating and telescopic mechanism according to claim 3, characterized in that: The moving iron core is a fan-shaped structure and rotates freely in the circular arc cavity formed by the fixed iron core assembly.

5. The electromagnetic driven rotating and telescopic mechanism according to claim 2, characterized in that: The first cam structure is provided at one end of the main shaft; the first cam structure is a sinusoidal structure.

6. An electromagnetically driven rotating and telescopic mechanism according to any one of claims 1 to 5, characterized in that: The telescopic rod assembly comprises a slide groove and an elastic assembly, and the slide groove is used to accommodate the main shaft for sliding.

7. An electromagnetically driven rotating and telescopic mechanism according to any one of claims 1 to 5, characterized in that: A groove engaging with the protruding structure is provided at the bottom of the moving iron core.

8. The electromagnetic driven rotating and telescopic mechanism according to claim 7, characterized in that: The self-locking structure also includes an elastic member arranged below the protruding structure.

9. The electromagnetic driven rotating and telescopic mechanism according to claim 7, characterized in that: The protruding structure is in an arc shape.

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