Electric valve

Abstract

The present invention discloses an electric valve comprising a rotor component, a transmission component, and a gear reduction mechanism. The transmission component comprises a transmission seat and an elastic member, the elastic member having a first transmission arm and a second transmission arm. The rotor component's rotating shaft is fixedly connected to the transmission seat. The transmission seat has a first transmission portion that abuts and engages with the first transmission arm, and the input gear unit has a second transmission portion that abuts and engages with the second transmission arm. The electric valve is provided with an elastic member between the transmission component and the sun gear to eliminate impact noise between the two, effectively reducing noise during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid control, in particular to an electric valve. Background Art

[0002] In fluid control systems, electric valves are often used to control the on / off or flow of fluids.

[0003] During operation, the coil of the electric valve is energized to drive the rotor to rotate, which drives the reduction gear mechanism to operate and amplify the output torque, driving the valve stem to rotate. The valve stem drives the valve core to move, causing the valve core to open, close or adjust the flow.

[0004] When the rotor shaft of the electric valve rotates, it drives the transmission component to rotate, and the transmission component drives the sun gear to rotate. Usually, the motor of the electric valve adopts a stepper motor structure, and the rotor rotates intermittently. Therefore, when working, there will be intermittent collision between the transmission component and the sun gear, causing the electric valve to generate noise during operation.

[0005] Therefore, how to reduce the noise during operation of the electric valve is a technical problem that those skilled in the art currently need to solve. Summary of the Invention

[0006] The object of the present invention is to provide an electric valve, comprising a rotor component, a transmission component and a gear reduction mechanism; the transmission component comprises a transmission seat and an elastic component, the elastic component has a first transmission arm and a second transmission arm, the rotating shaft of the rotor component is fixedly connected to the transmission seat, the transmission seat has a first transmission part that abuts and cooperates with the first transmission arm, and the input gear part has a second transmission part that abuts and cooperates with the second transmission arm.

[0007] In this technical solution, the transmission seat fixed to the rotating shaft is transmission-connected to the input gear portion of the gear reduction mechanism via the elastic member, which can reduce the impact noise between the transmission seat and the input gear portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A cross-sectional schematic diagram of a specific embodiment of the electric valve provided by the present invention;

[0009] Figure 2 It is a structural diagram of the assembled rotor component and transmission base in a specific embodiment;

[0010] Figure 3 for Figure 1 A front view of the elastic member shown in ;

[0011] Figure 4 for Figure 3 A top view of

[0012] Figure 5 for Figure 1 A schematic structural diagram of the elastic member at an angle shown in FIG;

[0013] Figure 6 for Figure 1 A schematic structural diagram of the elastic member shown in FIG. 1 at another angle;

[0014] Figure 7 for Figure 1 A schematic structural diagram of the input gear portion is shown in FIG;

[0015] Figure 8 for Figure 1 A cross-sectional schematic diagram of the input gear portion shown in ;

[0016] Figure 9 It is a schematic structural diagram of the assembled transmission base, elastic member and input gear part in a specific embodiment.

[0017] Description of reference numerals:

[0018] Control component 100, rotor component 110, rotating shaft 111, transmission base 120, first notch 121, upper limit portion 1211, first lateral surface 1212, elastic member 130, first transmission arm 131, second transmission arm 132, main body 133;

[0019] Gear reduction mechanism 200 , input gear portion 210 , connecting portion 211 , gear portion 212 , second notch portion 213 , lower limit portion 2131 , second lateral surface portion 2132 ;

[0020] Valve stem 300 , valve core 400 , valve body component 500 . DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] Please refer to Figure 1 , Figure 1 The figure is a cross-sectional schematic diagram of a specific embodiment of the electric valve provided by the present invention.

[0023] In this embodiment, the electric valve includes a control component 100, a gear reduction mechanism 200, a valve stem 300, a valve core 400 and a valve body component 500; the valve core 400 is a spherical structure and is located in the inner cavity of the valve body component 500, the lower end of the valve stem 300 is connected to the valve core 400, and the upper end is connected to the output part of the gear reduction mechanism 200; the rotating shaft 111 of the rotor component 110 of the control component 100 is transmission-connected to the input gear part 210 of the gear reduction mechanism 200.

[0024] During operation, the coil of the control component 100 is energized to drive the rotor component 110 to rotate circumferentially, and the rotating shaft 111 of the rotor component 110 drives the input gear part 210 to rotate, and transmits torque to the valve stem 300 through the gear reduction mechanism 200, so that the valve stem 300 drives the valve core 400 to rotate to realize the full opening, full closing and flow regulation functions of the electric valve.

[0025] In this embodiment, the rotating shaft 111 of the rotor component 110 is connected to the input gear part 210 through a transmission component, wherein the transmission component includes a transmission seat 120 and an elastic member 130, the rotating shaft 111 is fixed to the transmission seat 120, and the transmission seat 120 is connected to the input gear part 210 through the elastic member 130, so that the rotating shaft 111 can transmit the rotational force to the input gear part 210 when it rotates.

[0026] In the electric valve, the transmission seat 120 and the input gear part 210 are connected by the elastic member 130. The setting of the elastic member 130 can alleviate the collision between the relevant transmission structure components during operation, and effectively reduce the noise and stopping noise during the operation of the electric valve.

[0027] Please refer to Figures 2 to 8 , Figure 2 It is a structural diagram of the assembled rotor component and transmission base in a specific embodiment; Figure 3 for Figure 1 A front view of the elastic member shown in ; Figure 4 for Figure 3 A top view of Figure 5 for Figure 1 A schematic structural diagram of the elastic member at an angle shown in FIG; Figure 6 for Figure 1 A schematic structural diagram of the elastic member shown in FIG. 1 at another angle; Figure 7 for Figure 1 A schematic structural diagram of the input gear portion is shown in FIG; Figure 8 for Figure 1 Schematic cross-sectional view of the input gear portion shown in FIG.

[0028] In a specific solution, the elastic member 130 has a first transmission arm 131 and a second transmission arm 132 , the transmission seat 120 has a first transmission portion abutting and cooperating with the first transmission arm 131 , and the input gear portion 210 has a second transmission portion abutting and cooperating with the second transmission arm 132 .

[0029] When the transmission base 120 rotates circumferentially with the rotating shaft 111, the first transmission part of the transmission base 120 abuts against the first transmission arm 131 to apply a rotational torque to the elastic member 130, and then the second transmission arm 132 of the elastic member 130 abuts against the second transmission part of the input gear part 210 to apply a rotational torque to the input gear part 210, so that the input gear part 210 rotates together with the transmission base 120. Obviously, in this process, the elastic member 130 also moves.

[0030] As mentioned above, the first transmission arm 131 and the transmission seat 120 are in abutment with each other, and the second transmission arm 132 and the input gear part 210 are in abutment with each other. There is no gap between the relevant matching structures. During rotation, the impact noise between the transmission seat and the input gear part can be reduced, and the working noise and stopping noise of the electric valve can be further reduced.

[0031] Specifically, the elastic member 130 includes a main body 133 with an annular structure. The first transmission arm 131 and the second transmission arm 132 are respectively located at two ends of the main body 133 . The two ends of the main body 133 are respectively fitted with the transmission seat 120 and the input gear part 210 .

[0032] In this way, the main body 133 of the elastic member 130 is tightly fitted with the transmission seat 120 and the input gear portion 210, which can avoid mutual collision between the elastic member 130 and the transmission seat 120, and between the elastic member 130 and the input gear portion 210 during operation, and can reduce the collision noise between the transmission seat 120 and the input gear portion 210.

[0033] The elastic member 130 can be specifically made of elastic material (such as elastic steel) and rotated around a central axis to form a main body 133 , one end of the elastic material forms the first transmission arm 131 , and the other end forms the second transmission arm 132 .

[0034] In practical applications, the elastic member 130 may be a torsion spring, and two elastic legs of the torsion spring respectively form the aforementioned first transmission arm 131 and the second transmission arm 132 .

[0035] In a specific solution, the first transmission arm 131 and the second transmission arm 132 are located on both sides of the central axis of the main body 133 . Of course, the first transmission arm 131 and the second transmission arm 132 can also be located on the same side of the central axis of the main body 133 .

[0036] More specifically, the first transmission arm 131 and the second transmission arm 132 are arranged in parallel to effectively transmit the rotational force.

[0037] In a specific solution, a limiting structure is further provided to limit the axial position of the elastic member 130 to prevent the elastic member 130 from moving in the axial direction, thereby ensuring that the elastic member 130 can only be transmitted in the circumferential direction.

[0038] In this embodiment, the transmission seat 120 is generally cylindrical in structure, the rotating shaft 111 is fixedly inserted into the center of the transmission seat 120, and the transmission seat 120 has a first notch portion 121, such as Figure 2 As shown, the first notch portion 121 includes a first lateral surface portion 1212 and an upper limit portion 1211 facing the input gear portion 210. After the elastic member 130 is tightly fitted onto the transmission seat 120, its first transmission arm 131 is located in the first notch portion 121 and abuts against the first lateral surface portion 1212. The upper limit portion 1211 can prevent the elastic member 130 from moving upward in the circumferential direction. It can be understood that the first lateral surface portion 1212 is the aforementioned first transmission portion.

[0039] The output gear unit 210 includes a connecting portion 211 and a gear portion 212. The connecting portion 211 cooperates with the elastic member 130. The connecting portion 211 is generally cylindrical and has a second notch 213. The second notch 213 includes a second lateral surface 2132 and a lower stop 2131 facing the transmission seat 120. When the elastic member 130 is tightly fitted over the connecting portion 211, its second transmission arm 132 is located in the second notch 213 and abuts against the second lateral surface 2132. The lower stop 2131 prevents the elastic member 130 from moving upward in the axial direction. It can be understood that the second lateral surface 2132 is the aforementioned second transmission unit.

[0040] After the above arrangement, the upper limit portion 1211 and the lower limit portion 2131 form a limit structure for limiting the axial position of the elastic member 130 .

[0041] Combine Figure 1 and Figure 9 After the transmission seat 120, the elastic member 130 and the input gear part 210 are assembled, the main body 133 of the elastic member 130 is tightly fitted with the connecting portion 211 of the transmission seat 120 and the input gear part 210, and the first transmission arm 131 abuts against the first lateral surface 1212, and the second transmission arm 132 abuts against the second lateral surface 2132. The transmission seat 120 and the input gear part 210 are connected through the elastic member 130 to form an elastic fitting structure, and the elastic member 130 forms a gap-free fit with both, avoiding collision between the three during operation, which can effectively reduce the noise of the electric valve.

[0042] In addition to the above structure, the elastic member 130 also adopts a bellows structure in actual setting. The two ends of the bellows are respectively fixed to the transmission seat 120 and the input gear part 210, which can also play a role in reducing the noise of the electric valve. It will not be described in detail.

[0043] The above describes in detail the electric valve provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to facilitate understanding of the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An electric valve, comprising a rotor component, a transmission component and a gear reduction mechanism; characterized in that: The transmission component includes a transmission seat and an elastic member, the elastic member has a first transmission arm and a second transmission arm, the rotating shaft of the rotor component is fixedly connected to the transmission seat, the transmission seat includes a first lateral surface, the first lateral surface is in abutment with the first transmission arm, the input gear part of the gear reduction mechanism includes a second lateral surface, the second lateral surface is in abutment with the second transmission arm.

2. The electric valve according to claim 1, characterized in that The elastic member includes a main body portion in an annular structure. The first transmission arm and the second transmission arm are respectively located at two ends of the main body portion. The two ends of the main body portion are respectively fitted with the transmission seat and the input gear portion.

3. The electric valve according to claim 2, characterized in that The first transmission arm and the second transmission arm are located on both sides of the central axis of the main body, and the first transmission arm and the second transmission arm are arranged in parallel.

4. The electric valve according to claim 3, characterized in that The elastic member is a torsion spring, and two elastic legs of the torsion spring respectively form the first transmission arm and the second transmission arm.

5. The electric valve according to any one of claims 1 to 4, characterized in that: The transmission seat includes a first notch portion, the first notch portion includes the first lateral surface portion and an upper limit portion facing the input gear portion, the first transmission arm is located in the first notch portion, the first lateral surface portion serves as the first transmission portion, and the upper limit portion is used to prevent the elastic member from moving axially upward.

6. The electric valve according to claim 5, characterized in that: The input gear portion includes a connecting portion, the connecting portion includes a second notch portion, the second notch portion includes the second lateral surface portion and a lower limit portion facing the transmission seat, the second transmission arm is located in the second notch portion, the second lateral surface portion serves as a second transmission portion, and the lower limit portion is used to prevent the elastic member from moving axially downward.

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