A motor structure and a gas valve having the motor structure

Abstract

The present application provides a motor structure, wherein a first connection portion is fixedly connected to a first cover plate or is an integral structure, a second connection portion is fixedly connected to a second cover plate or is an integral structure, a first connection portion is provided with a first hole portion, a second connection portion is provided with a second hole portion, a rotor core shaft assembly comprises a core shaft and a rotor assembly, the rotor assembly comprises a connecting frame and a rotor component, a part of the connecting frame is insert-molded with the rotor component, another part of the connecting frame is fixedly connected to the core shaft, a connecting frame is provided with a channel, the connecting frame is passed through the channel, the core shaft is gap-fitted with the first hole portion, and the core shaft is gap-fitted with the second hole portion; further comprising a first gasket, a second gasket and an elastic component, the elastic elastic component is located between the first connection portion and the first gasket, the first gasket abuts against the elastic component and the connection frame, the second gasket abuts against the second connection portion and the connection frame, and the rotor core shaft assembly can rotate in a circumferential direction.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic control and gas control, and in particular to a motor structure and a gas valve having the motor structure. Background Art

[0002] Motors are widely used in electromagnetic control systems. A typical motor structure includes a rotor screw assembly, an upper limit piece and a lower limit piece. The screw in the rotor screw assembly forms an integrated structure with the rotor component through an injection molded body. The upper limit piece includes an upper bearing seat and an upper bearing component. The lower limit piece includes a lower bearing seat and a lower bearing component. The upper part of the screw is fixedly connected to the inner ring of the upper bearing component, and the lower part of the screw is fixedly connected to the inner ring of the lower bearing component, so that the rotor screw assembly can rotate circumferentially and be limited in the axial direction by the upper limit piece and the lower limit piece. For those skilled in the art, on this basis, how to optimize the design of the motor structure and provide a motor structure with a relatively simple structure is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The purpose of this application is to provide a relatively simple motor structure.

[0004] The present application provides a motor structure, provided with a housing cavity, including a coil component, a rotor core shaft assembly, a first cover plate, a second cover plate, a first connection portion and a second connection portion, wherein a portion of the rotor core shaft assembly is located in the housing cavity, the first cover plate is located at the outer periphery of the coil component, the second cover plate is located at the outer periphery of the coil component, and along the axial direction of the motor, the first cover plate is located above the second cover plate;

[0005] The first connection portion is fixedly connected to the first cover plate or is an integral structure, the second connection portion is fixedly connected to the second cover plate or is an integral structure, the first connection portion is provided with a first hole portion, the second connection portion is provided with a second hole portion, the rotor spindle assembly includes a spindle and a rotor assembly, the rotor assembly includes a connecting frame and a rotor component, a part of the connecting frame is fixedly connected to the rotor component, and another part of the connecting frame is fixedly connected to the spindle, the connecting frame is provided with a channel, the spindle is passed through the channel, the spindle is gap-matched with the first hole portion, and the spindle is gap-matched with the second hole portion;

[0006] It also includes a first abutment member and a second abutment member, wherein the first abutment member directly or indirectly abuts between the first connection portion and the rotor core shaft assembly, and the second abutment member directly or indirectly abuts between the second connection portion and the rotor core shaft assembly, and the rotor core shaft assembly is capable of rotating in the circumferential direction.

[0007] The present application also provides a gas valve, comprising a valve body, the valve body being provided with a valve port, and a pressure regulating device, the pressure regulating device comprising a motor and a connecting seat, the motor being fixedly connected to the connecting seat, the motor comprising a rotor core shaft assembly, the rotor core shaft assembly comprising a core shaft and a rotor assembly, the core shaft being provided with an external threaded portion, the core shaft being fixedly connected to the rotor assembly, and the rotor core shaft assembly being capable of rotating in a circumferential direction;

[0008] It also includes a nut, an elastic member and a diaphragm assembly, the nut is provided with an internal threaded portion, the nut can be axially lifted and lowered through the threaded cooperation between the internal threaded portion and the external threaded portion, the nut and the connecting seat are circumferentially limited, the nut and the connecting seat are slidingly matched, the elastic member is located on the outer periphery of the core shaft, one end of the elastic member is against the nut, and the other end of the elastic member is against the diaphragm assembly, and the diaphragm assembly can approach or move away from the valve mouth.

[0009] The present application provides a motor structure and a gas valve having the motor. Through the optimized design of the motor structure, the first connecting part is fixedly connected to the first cover plate or is an integral structure, the second connecting part is fixedly connected to the second cover plate or is an integral structure, the first connecting part is provided with a first hole portion, the second connecting part is provided with a second hole portion, the rotor core shaft assembly includes a core shaft and a rotor assembly, the rotor assembly includes a connecting frame and a rotor component, part of the connecting frame is fixedly connected to the rotor component, and another part of the connecting frame is fixedly connected to the core shaft, the connecting frame is provided with a channel, the connecting frame is penetrated through the channel, the core shaft is gap-fitted with the first hole portion, the core shaft is gap-fitted with the second hole portion, and also includes a first abutment and a second abutment, the first abutment abuts between the first connecting part and the rotor core shaft assembly, the second abutment abuts between the second connecting part and the rotor core shaft assembly, the rotor core shaft assembly can rotate in the circumferential direction, and the overall structure of the motor is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic cross-sectional view of the overall structure of the gas valve provided by the present invention;

[0011] Figure 2 for Figure 1 An enlarged structural cross-sectional view of a pressure regulating device of a gas valve;

[0012] Figure 3 A schematic diagram of a motor of a gas valve provided by the present invention from a top view;

[0013] Figure 4 A cross-sectional schematic diagram of a first embodiment of a rotor core shaft assembly of a gas valve provided in the present application;

[0014] Figure 5 A cross-sectional schematic diagram of a second embodiment of a rotor core shaft assembly of a gas valve provided in the present application;

[0015] Figure 6 A schematic cross-sectional view of a third embodiment of a rotor core shaft assembly of a gas valve provided in the present application; DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, further detailed description is given below in conjunction with the accompanying drawings and specific implementation methods.

[0017] The present application provides a gas valve, referring to Figure 1 As shown, the gas valve includes a valve body 11. The valve body 11 can be integrally cast by aluminum material. The valve body 11 includes an inlet portion and an outlet portion, and is further provided with a first valve port portion 112, a second valve port portion 113, a third valve port portion 114, and a valve port portion 111 as a proportional regulating valve port. A gas flow channel 115 is also provided inside the valve body 11. The gas valve includes a safety control device 1A, a pressure regulating device 1B, and a pressure difference regulating device 1C. The installation control device 1A includes a main valve plug and a secondary valve plug. The main valve plug can be close to or far from The auxiliary valve plug can approach or move away from the first valve port 112, and the auxiliary valve plug can approach or move away from the second valve port 113. The safety control device 1A uses two valve plugs to ensure the safe use of the gas valve. The differential pressure regulating device 1B includes a proportional diaphragm assembly 60, which can approach or move away from the valve port 111 to adjust the opening size of the valve port 111 to affect the gas pressure in the gas flow channel 115, so as to act on the buffer back pressure air cavity A of the differential pressure regulating device 1C to adjust the opening of the main valve port to adjust the gas flow size of the gas valve.

[0018] Refer to the following Figure 1 Combination Figure 2-4 The pressure regulating device structure of the gas valve provided in the present application is introduced in detail. The regulating device structure includes a connecting seat 10 and a motor 20. The connecting seat 10 is fixedly connected to the valve body 11 as a whole. A sealing member 30 is also provided between the connecting seat 10 and the motor 20 to prevent the gas from leaking out from the connection portion between the two. The connecting seat 10 is provided with a connecting seat recess 101, which is recessed inward from the upper end surface of the connecting seat 10. Part of the sealing member 30 is located in the connecting seat recess 101, and the sealing member 30 is abutted between the cover plate 22 of the motor 20 and the connecting seat 10.

[0019] The motor 20 includes a cover plate 22, a stator coil component, a first connection portion 23, a second connection portion 24, a first abutment member, a second abutment member and a rotor core shaft assembly 21. The motor 20 is provided with a first accommodating cavity 20a, a part of the rotor core shaft assembly 21 is located in the first accommodating cavity 20a, the stator coil component is located at the outer periphery of the rotor core shaft assembly 21, the cover plate 22 is located at the outer periphery of the stator coil component, the cover plate 22 includes a first cover plate 221 and a second cover plate 222, the first cover plate 221 is farther from the connection seat 10 than the second cover plate 222, the first connection portion 23 is fixedly connected to the first cover plate 221, and can be connected by press-fitting or welding, or the first connection portion 23 and the first cover plate 221 can also be formed by processing. The second connecting portion 24 is fixedly connected to the second cover plate 222, and can be connected by press-fitting or welding, or the second connecting portion 24 and the second cover plate 222 can also be processed to form an integral structure. The sealing member 30 is clamped between the second cover plate 222 and the connecting seat 10. The first connecting portion 23 is provided with a first hole portion 231, and the second connecting portion 24 is provided with a second hole portion 241. The rotor core shaft assembly 21 includes a core shaft 211 and a rotor assembly 212. The rotor assembly 212 includes a rotor component 2121 and a connecting frame. In this embodiment, the connecting frame is a first connecting frame 2122, a part of the first connecting frame 2122 is fixedly connected to the rotor component 2121, and another part of the first connecting frame 2122 is fixedly connected to the core shaft. A connecting frame 2122 is provided with a first channel 21224, the core shaft 211 is passed through the first channel 21224, and part of the core shaft 211 is located in the first hole portion 231, and another part of the core shaft 211 is located in the second hole portion 241, the core shaft 211 and the first hole portion 231 are clearance-matched, and the core shaft 211 and the second hole portion are clearance-matched. The first hole portion 231, the second hole portion 241, the first channel 21224 and the core shaft 211 are coaxially arranged to ensure that the parts are coaxially actuated. The first connecting frame 2122 also includes a large diameter portion 21221, a small diameter portion 21222 and a main body portion 21223. The large diameter portion 21222 is connected to the small diameter portion 21222 through the main body portion 21223. The main body portion 21223 first connecting frame 2122 is roughly in the shape of an inverted I-shaped structure, the main body 21223 is extended along the height direction of the adjusting device 1B, the large diameter portion 21221 protrudes radially outward from the main body 21223, and the small diameter portion 21222 protrudes radially outward from the main body 21223. The outer edge of the large diameter portion 21221 and the rotor component 2121 are formed by injection molding. In order to facilitate the insert molding of the two, the large diameter portion 21221 is provided with a notch portion 21221a, and the notch portion 21221a is recessed inward from the outer edge surface of the large diameter portion. The core shaft 211 is press-fitted with the inner circumferential wall of the main body 21223. For example, the core shaft and the first connecting frame can be fixedly connected by interference fit or the like, or the two can be fixedly connected by welding or the like.A spacing is formed between the small diameter portion 21222 and the rotor component 2121 to facilitate insert molding of the rotor component and the large diameter portion. In this embodiment, a spacing is formed between the rotor component 2121 and part of the first connecting frame 2122. The present application sets a connecting frame and a core shaft made of metal, and insert molding is performed with the rotor component through the outer edge of the connecting frame, and another part of the connecting frame is fixedly connected to the core shaft. Only one injection molding process is needed to realize the connection of the rotor core shaft assembly. Compared with the two injection molding processes of the rotor screw assembly in the background technology, the process is simpler and more reliable. The first connecting frame is formed of a stretched material, which can reduce and save manufacturing materials. In addition, there is no need to use complex The bearing seat and bearing parts and other components simplify the structure and number of the motor components, so that the overall structure of the motor is simplified. The motor 20 also includes a first abutment member and a second abutment member, wherein the first abutment member directly or indirectly abuts between the first connecting portion 23 and the rotor core shaft assembly 21, and the first abutment member is a component composed of multiple components including a first gasket 25, a third gasket 25a and an elastic component 27, and the second abutment member includes a second gasket 26. The first gasket 25, the second gasket 26 and the third gasket 25a are all gaskets made of wear-resistant materials. In this embodiment, the first gasket 25, the second gasket 26 and the third gasket 25a are all sleeved on the outer periphery of the core shaft. The elastic component 27 is against the first gasket and the third gasket, the first gasket 25 is against the elastic component and the large diameter portion 21221, the third gasket 25a is against the first connecting portion 23 and the elastic component 27, the second gasket 26 is directly or indirectly against the second connecting portion 24 and the small diameter portion 21222, one end of the elastic component 27 is against the third gasket 25a, and the other end of the elastic component 27 is against the first gasket 25. It should be noted that the offset stated in this application may include direct offset or indirect offset. For example, when the first gasket is against the elastic component and the large diameter portion, another zero may be added. The first gasket is indirectly against the elastic component and the large diameter part. The above arrangement can greatly reduce the friction between the components to achieve better wear resistance and facilitate the operation of the motor. The addition of the elastic component 27 can prevent the rotor core shaft assembly from axial stringing. Through the above arrangement, the rotor core shaft assembly 21 is a whole. When the stator coil component is energized, under the action of excitation, the rotor core shaft component 21 can perform circumferential rotation. Due to the limiting effect of the first connecting part and the second connecting part, it cannot perform axial lifting and lowering movement. It should be noted that due to the influence of factors such as the processing tolerance size of the component product, the micro-movement of the core shaft 211 in the axial direction is not excluded. ,

[0020] The core shaft 211 is provided with an external threaded portion 2111, and the external threaded portion 2111 protrudes downward from the lower end surface of the second connecting portion 24. The connecting seat 10 is provided with a receiving portion 10a. The pressure regulating device 1B also includes a nut 40, an elastic member 50 and a diaphragm assembly 60. The nut 40 is located in the receiving portion 10a. The nut 40 is provided with an internal threaded portion 41. The nut 40 can perform axial lifting and lowering movement through the threaded cooperation of the internal threaded portion 41 and the external threaded portion 2111. The nut 40 is slidably matched with the connecting seat 10, and the nut 40 is circumferentially limited with the connecting seat. The receiving portion 10a includes a first receiving sub-portion 101a, a second receiving sub-portion 102a and a third receiving sub-portion 103a. The first receiving sub-portion and the second receiving sub-portion are located on different sides of the second receiving sub-portion, and at least part of the nut 40a is located in the second receiving sub-portion 102a. In this embodiment, the second receiving sub-portion 102a has a second receiving hole portion that is roughly elliptical, and the second receiving hole portion is connected to the base 40. Circumferential limitation makes it impossible for it to rotate circumferentially relative to the connecting seat. It should be noted that the second accommodating hole portion can also be other non-circular structures such as polygonal or special-shaped structures, as long as the base can be circumferentially limited. In addition, a convex rib can be provided on one of the connecting seat and the base, and a recess can be provided on the other. The cooperation of the two can also achieve circumferential limitation of the base and the connecting seat. The outer peripheral wall of the nut 40a is slidably matched with the inner wall of the second accommodating sub-portion. The inner diameter of the third accommodating sub-portion is larger than the inner diameter of the second accommodating sub-portion to facilitate the axial deformation of the diaphragm assembly 60. The elastic member 50 is sleeved on the outer peripheral portion of the external threaded portion 2111 of the core shaft 211. One end of the elastic member 50 is abutted against the nut 40, and the other end is abutted against the diaphragm assembly 60. Part of the elastic member 50 is sleeved on the raised portion 41 of the nut 40 to achieve better positioning of the elastic member 50. The first connecting portion, the second connecting portion, the rotor core shaft assembly, and the nut are coaxially arranged.

[0021] The operating principle of the pressure regulating device is briefly described below. After the gas enters from the inlet, it enters the gas flow channel through the first valve port 112 and the second valve port 113. The pressure regulating device affects the gas pressure in the gas flow channel by controlling the opening size of the valve port 111, thereby controlling the valve port opening of the third valve port 114. When the gas flow rate that needs to flow out of the outlet of the gas valve is large, the opening of the third valve port 114 needs to be increased. By energizing the stator coil component, the rotor core shaft assembly 21 is excited to rotate circumferentially, and the core shaft 211 and the rotor assembly 212 rotate synchronously. Through the thread cooperation between the external threaded portion 2111 and the internal threaded portion of the nut, the nut 40 moves downward in the circumferential direction and applies pressure to the elastic member 50. The compression amount received by the elastic member 50 increases and applies pressure to the diaphragm assembly 60. The diaphragm assembly 60 as a whole moves axially downward to approach the valve port 111. The opening of the valve mouth portion 111 decreases, the gas pressure acting on the gas flow channel increases, the pressure acting on the buffer back pressure air cavity of the pressure difference regulating device 1C increases, the opening of the third valve mouth portion 114 as the main valve port increases, and the gas flow through the third valve mouth portion 114 increases; when the gas flow that needs to flow out of the outlet of the gas valve is small, a smaller pulse can be applied to the motor 20, and the nut 40 can move downward a smaller distance through the threaded cooperation of the internal threaded portion and the external threaded portion to apply pressure on the elastic member 50. The effect of the elastic member 50 on the diaphragm assembly 60 is small, the opening of the valve mouth portion 111 is relatively large, the gas pressure acting on the gas flow channel is small, the pressure of the buffer back pressure air cavity of the pressure difference regulating device 1C decreases, the opening of the third valve mouth portion 114 as the main valve port decreases, and the gas flow through the third valve mouth portion 114 decreases.

[0022] In order to facilitate the adjustment of the initial pressure position of the pressure regulator, the core shaft 211 is also provided with an operating groove 80. The operating groove 80 is recessed from the top end face of the core shaft 211 toward the external threaded portion, and can be used in conjunction with an external operating wrench such as a flat-blade screwdriver to adjust and set the initial pressure of the pressure regulating device.

[0023] Compared with the pressure regulating device of the background technology that controls the opening degree of the proportional regulating valve mouth through the suction and separation of the dynamic and static iron cores, the present application adopts a stepping motor to apply pulses to control the stroke of the pressure regulating control through a threaded feeding mechanism, thereby realizing stepless adjustment of the pressure regulating device, making the outlet pressure of the proportional regulating valve mouth more stable and the pressure regulation accuracy higher, and the overall structure of the pressure regulating device is relatively simple. Compared with the pressure regulating device of the dynamic and static iron core structure of the background technology, the overall components of the pressure regulating device are fewer, and the overall structure of the gas valve is simplified.

[0024] Combine the following Figure 3A second embodiment of the pressure regulating device of the gas valve provided by the present application is introduced. In this embodiment, the rotor core shaft assembly 21 includes a core shaft 211' and a rotor assembly. The rotor assembly includes a rotor component and a second connecting frame 2122a. The second connecting frame 2122a is roughly a plate-shaped structure. The outer edge of the second connecting frame 2122a is insert-molded with the rotor component. The second connecting frame 2122a is provided with a second channel. The core shaft 211' includes a reduced diameter portion 2111' and a first main body portion 2112'. The outer diameter of the first main body portion is larger than the outer diameter of the reduced diameter portion. The first main body portion 2112' is provided with an upper The step portion 2112a and the lower step portion 2112b, the reduced diameter portion 2111' are inserted into the second channel, the first gasket 25 is sleeved on the outer periphery of the reduced diameter portion, the second connecting frame 2112' is fixedly connected to the reduced diameter portion 2111' and / or the upper step portion 2112a, the first gasket 25 is clamped between the second connecting frame and the elastic component 27, and the second gasket 26 is clamped between the second connecting portion and the lower step portion 2111b. The invention of the present application can also be realized through the above-mentioned arrangement. The relevant actuating principles and technical effects have been specifically stated in the first embodiment and will not be repeated here.

[0025] Combine the following Figure 4 A third embodiment of the pressure regulating device of the gas valve provided in the present application is introduced. In this embodiment, the rotor core shaft assembly also includes a core shaft 211 and a rotor assembly. The rotor assembly includes a rotor component and a second connecting frame 2122a. The rotor core shaft assembly also includes an abutment portion 70, and the abutment portion 70 is fixedly connected to the core shaft 211, wherein the first gasket is clamped between the second connecting frame and the elastic component 27, and the second gasket 26 is clamped between the second connecting portion and the abutment portion 70. The invention of the present application can also be realized through the above-mentioned arrangement. The relevant actuation principles and technical effects have been specifically stated in the first embodiment and will not be repeated here.

[0026] The present application provides a motor structure, which is provided with a housing cavity, including a coil component, a rotor core shaft assembly, a first cover plate, a second cover plate, a first connecting portion and a second connecting portion, wherein a portion of the rotor core shaft assembly is located in the housing cavity, the first cover plate is located at the outer periphery of the coil component, the second cover plate is located at the outer periphery of the coil component, and along the axial direction of the motor, the first cover plate is located above the second cover plate;

[0027] The first connection part is fixedly connected to the first cover plate or is an integral structure, the second connection part is fixedly connected to the second cover plate or is an integral structure, the first connection part is provided with a first hole part, the second connection part is provided with a second hole part, the rotor core shaft assembly includes a core shaft and a rotor assembly, the rotor assembly includes a connecting frame and a rotor component, a part of the connecting frame is fixedly connected to the rotor component, another part of the connecting frame is fixedly connected to the core shaft, the connecting frame is provided with a channel, the connecting frame is penetrated through the channel, the core shaft is gap-matched with the first hole part, and the core shaft is gap-matched with the second hole part;

[0028] It also includes a first abutment member and a second abutment member, wherein the first abutment member abuts between the first connection portion and the rotor core shaft assembly, and the second abutment member abuts between the second connection portion and the rotor core shaft assembly, and the rotor core shaft assembly is rotatable in the circumferential direction.

[0029] The present application also provides a gas valve, comprising a valve body, the valve body being provided with a valve port, and a pressure regulating device, the pressure regulating device comprising a motor and a connecting seat, the motor being fixedly connected to the connecting seat, the motor comprising a rotor core shaft assembly, the rotor core shaft assembly comprising a core shaft and a rotor assembly, the core shaft being provided with an external threaded portion, the core shaft being fixedly connected to the rotor assembly, and the rotor core shaft assembly being capable of rotating in a circumferential direction;

[0030] It also includes a nut, an elastic member and a diaphragm assembly. The nut is provided with an internal threaded portion. The nut can be axially lifted and lowered through the threaded cooperation between the internal threaded portion and the external threaded portion. The nut and the connecting seat are circumferentially limited. The nut and the connecting seat are slidingly matched. The elastic member is located on the outer periphery of the core shaft. One end of the elastic member is against the nut, and the other end of the elastic member is against the diaphragm assembly. The diaphragm assembly can approach or move away from the valve mouth.

[0031] Through the above arrangement, compared with the motor structure of the background technology, the present application sets a metal connecting frame, and the outer edge of the connecting frame is insert-molded with the rotor component, and another part of the connecting frame is fixedly connected to the core shaft. Only one injection molding process is needed to realize the connection of the rotor core shaft assembly. Compared with the rotor screw assembly of the background technology which requires two injection molding processes, the process is simpler and more reliable, and the first connecting frame is formed of a stretched material, which can reduce and save manufacturing materials. In addition, there is no need to use complex bearing seats, bearing parts and other components, which simplifies the structure and number of motor components, and simplifies the overall structure of the motor.

[0032] In addition, through the above-mentioned settings, the present application adopts a stepper motor to apply pulses to control the stroke of the pressure regulating control through a threaded feeding mechanism, thereby realizing stepless adjustment of the pressure regulating device, making the outlet pressure of the proportional control valve port more stable and the pressure regulation accuracy higher, and the overall structure of the pressure regulating device is relatively simple. Compared with the background technology, the pressure regulating device of the dynamic and static iron core structure has fewer overall parts, and the overall structure of the gas valve is simplified.

[0033] It should be noted that the directional words "up", "down", "left" and "right" stated in the specification of the present invention are defined based on the diagrams shown in the drawings of the specification. They are only for the convenience of understanding and expression and should not limit the scope of protection of the present application. In addition, the "first" and "second" stated in the present application are also interpreted as above. In addition, it should be noted that the offset stated in the present application includes direct offset and also includes the situation where an additional component is set up to perform indirect offset through the component.

[0034] The gas valve provided by the present invention is introduced in detail above. It should be noted that the present specification only uses several examples to illustrate the principle and invention of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. For example, the motor structure of the pressure regulating device can be other limiting structures as long as the rotor core shaft assembly can rotate circumferentially. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the principle of the present invention, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A motor structure, characterized in that: A receiving cavity is provided, comprising a coil component, a rotor core shaft assembly, a first cover plate, a second cover plate, a first connecting portion and a second connecting portion, wherein a portion of the rotor core shaft assembly is located in the receiving cavity, the first cover plate is located at the outer periphery of the coil component, the second cover plate is located at the outer periphery of the coil component, and along the axial direction of the motor structure, the first cover plate is located above the second cover plate; The first connection portion is fixedly connected to the first cover plate or is an integral structure, the second connection portion is fixedly connected to the second cover plate or is an integral structure, the first connection portion is provided with a first hole portion, the second connection portion is provided with a second hole portion, the rotor spindle assembly includes a spindle and a rotor assembly, the rotor assembly includes a connecting frame and a rotor component, part of the connecting frame is fixedly connected to the rotor component, and another part of the connecting frame is fixedly connected to the spindle, the connecting frame is provided with a channel, the spindle is passed through the channel, the spindle is gap-matched with the first hole portion, and the spindle is gap-matched with the second hole portion; The rotor core shaft assembly further comprises a first abutment member and a second abutment member, wherein the first abutment member directly or indirectly abuts between the first connection portion and the rotor core shaft assembly, and the second abutment member directly or indirectly abuts between the second connection portion and the rotor core shaft assembly, and the rotor core shaft assembly is capable of rotating in a circumferential direction; The first abutment member includes a first gasket, a third gasket and an elastic component, the elastic component is located between the first gasket and the third gasket, the third gasket abuts between the first connecting portion and the elastic component, the first gasket abuts between the elastic component and the rotor core shaft assembly, and the second abutment member includes a second gasket, and the second gasket abuts between the second connecting portion and the rotor core shaft assembly.

2. A motor structure according to claim 1, characterized in that: The connecting frame is a first connecting frame, which is provided with a first channel and also includes a large diameter portion, a small diameter portion and a main body portion. The large diameter portion is connected to the small diameter portion through the main body portion, the large diameter portion protrudes radially outward from the main body portion, and the small diameter portion protrudes radially outward from the main body portion. The large diameter portion is closer to the first connecting portion than the small diameter portion, a portion of the large diameter portion is fixedly connected to the rotor component, the core shaft is passed through the first channel, and a portion of the core shaft is press-fitted or welded to the inner circumferential wall of the main body portion.

3. A motor structure according to claim 2, characterized in that: The first gasket abuts between the elastic component and the large-diameter portion, the second gasket abuts between the second connecting portion and the small-diameter portion, and a gap is formed between the small-diameter portion and the rotor component.

4. A motor structure according to claim 1, characterized in that: The connecting frame is a second connecting frame, which is a plate-like structure. The second connecting frame is provided with a second channel. The core shaft includes a reduced diameter portion and a first main body portion. The first main body portion includes an upper step portion and a lower step portion. The reduced diameter portion is passed through the second channel. The first gasket is sleeved on the outer periphery of the reduced diameter portion. The second connecting frame is fixedly connected to the upper step portion and / or the reduced diameter portion.

5. A motor structure according to claim 4, characterized in that: The first gasket abuts between the first connecting portion and the second connecting frame, and the second gasket abuts between the lower step portion and the second connecting portion.

6. The motor structure according to claim 1, characterized in that: The connecting frame is a second connecting frame, the second connecting frame is a plate-like structure, the second connecting frame is provided with a second channel, the rotor core shaft assembly includes an abutment portion, the abutment portion is fixedly connected to the core shaft, the core shaft is passed through the second channel, the first gasket is sleeved on the core shaft, the first gasket abuts between the first connecting portion and the second connecting frame, and the second gasket abuts between the abutment portion and the second connecting portion.

7. A motor structure according to any one of claims 1 to 6, characterized in that: A gap is formed between the rotor component and the connecting frame or a gap is formed between the rotor component and the core shaft.

8. A motor structure according to any one of claims 1 to 6, characterized in that: The core shaft and the connecting frame are both formed of metal material.

9. A gas valve, characterized in that: It includes a valve body, the valve body is provided with a valve port, and also includes a pressure regulating device, the pressure regulating device includes a motor and a connecting seat, the motor is fixedly connected to the connecting seat, the motor includes a rotor core shaft assembly, the rotor core shaft assembly includes a core shaft and a rotor assembly, the core shaft is provided with an external threaded portion, the core shaft is fixedly connected to the rotor assembly, and the rotor core shaft assembly can rotate in the circumferential direction; It also includes a nut, an elastic member and a diaphragm assembly, wherein the nut is provided with an internal threaded portion, and the nut can be axially lifted and lowered through the threaded cooperation between the internal threaded portion and the external threaded portion, the nut and the connecting seat are circumferentially limited, the nut and the connecting seat are slidably matched, the elastic member is located at the outer periphery of the core shaft, one end of the elastic member is against the nut, and the other end of the elastic member is against the diaphragm assembly; The diaphragm assembly can approach or move away from the valve mouth, and the motor is a motor structure as described in any one of claims 1-7.

10. A gas valve according to claim 9, characterized in that: The valve body is provided with a gas flow passage, including a third valve mouth portion, and also includes a safety control device and a pressure difference regulating device. The diaphragm assembly can approach or move away from the valve mouth portion to affect the gas pressure in the gas flow passage, and act on the back pressure buffer air cavity of the pressure difference regulating device to control the opening size of the third valve mouth portion.

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