Magnetic drive base device and rhythm furniture

Abstract

The utility model provides a magnetically-driven base device, namely rhythm furniture. The magnetic drive base device comprises a fixing frame, a rhythm frame, a magnetic drive mechanism and a cooling fan, the magnetic drive mechanism comprises a coil assembly fixed relative to the fixing frame and a magnetic drive assembly fixed relative to the rhythm frame, the rhythm frame is arranged to be capable of reciprocating relative to the fixing frame, and the cooling fan is connected with the fixing frame. When the cooling fan works, airflow can be pushed to flow, so that the airflow flows through the outer surface of the coil winding in the coil assembly, forced convection occurs on the outer surface of the coil winding, heat accumulated on the outer surface of the coil winding can be taken away in time, and the temperature of the coil winding is within a reasonable range; a series of problems of low performance, short service life and the like caused by overheating of the coil winding are avoided.

Description

Technical Field

[0001] This application relates to the technical field of household supplies, and in particular, to a magnetic drive base device and a rhythmic furniture. Background Art

[0002] With the continuous progress of society, the quality of people's lives has been continuously improved. Rhythmic furniture is a commonly used household item for people's leisure time. Through the reciprocating movement of the rhythmic furniture, the quality of life can be improved.

[0003] In the related art, in rhythmic furniture with high quality requirements, a magnetic drive base device is used as a power device to drive the furniture to make reciprocating movements, which has the characteristics of no vibration, low noise and smooth movement. The principle is to generate a magnetic field with poles switching at a predetermined frequency by energizing the coil unit, so as to drive the magnetic unit to move in a predetermined direction to drive the body of the rhythmic furniture to make reciprocating movements. However, due to the existence of resistance and wires, current will generate certain heat when passing through the coil unit. If the current is too large, or the pole switching frequency is faster, the heating phenomenon will be more obvious, resulting in overheating of the coil unit, which will affect the performance and life of the magnetic drive base device. Summary of the Utility Model

[0004] The embodiments of this application provide a magnetic drive base device and a rhythmic furniture, so as to at least solve the problems of limited performance and short life caused by overheating of the existing magnetic drive base device.

[0005] The first aspect embodiment of this application provides a magnetic drive base device, including:

[0006] A fixing frame;

[0007] A rhythmic frame, which is arranged to be able to make reciprocating movements relative to the fixing frame;

[0008] A magnetic drive mechanism, including a coil assembly fixedly relative to the fixing frame and a magnetic moving assembly fixedly relative to the rhythmic frame. The coil assembly includes a coil bracket with a through channel hole and a coil winding wrapped around the outer surface of the coil bracket. The magnetic moving assembly passes through the channel hole;

[0009] A cooling fan, connected to the fixing frame, and the cooling fan is arranged such that the airflow generated by it can flow through the outer surface of the coil winding.

[0010] The magnetic drive base device according to the embodiments of this application has at least the following beneficial effects:

[0011] The cooling fan in the magnetic drive base device according to the embodiment of the present application can push the air flow to flow through the outer surface of the coil winding. By this forced convection method, the heat accumulated on the outer surface of the coil winding can be taken away in time, so as to ensure that the temperature of the coil winding is within a reasonable range, and to a certain extent, the performance and service life of the magnetic drive mechanism can be improved.

[0012] In a possible implementation manner, the outer surface includes a cylindrical outer peripheral surface. The air outlet of the cooling fan faces the outer peripheral surface, and the center of the orthographic projection of the cooling fan coincides with the center of the orthographic projection of the outer peripheral surface.

[0013] By setting the air outlet to face the outer peripheral surface directly, and the center of the orthographic projection of the cooling fan coincides with the center of the orthographic projection of the outer peripheral surface, the air flow discharged from the air outlet can flow vertically to the outer peripheral surface of the coil winding and has the largest coverage area, so as to achieve a better heat dissipation effect. And the air flow can also flow in other directions of the outer peripheral surface through the arc surface of the outer peripheral surface of the coil winding, further improving the heat dissipation effect.

[0014] In a possible implementation manner, the cooling fan is arranged on the same horizontal plane as the coil winding.

[0015] By arranging the cooling fan on the same horizontal plane as the coil winding, the cooling fan is convenient to arrange and will not have an adverse impact on the positional relationship between the fixing frame and the rhythm frame.

[0016] In a possible implementation manner, there are a pair of cooling fans, and the pair of cooling fans are symmetrically arranged on both sides of the outer peripheral surface in the horizontal direction.

[0017] By providing a pair of cooling fans and symmetrically arranging the pair of cooling fans on both sides of the outer peripheral surface in the horizontal direction, the two cooling fans can respectively dissipate heat from the outer peripheral surface of the coil winding on their respective sides, which has the characteristics of high heat dissipation efficiency. At the same time, the two cooling fans are also very convenient to arrange in the horizontal direction.

[0018] In a possible implementation manner, the height of the cooling fan is not greater than the outer diameter of the coil winding.

[0019] By reasonably setting the height of the cooling fan, a balance can be achieved between the heat dissipation effect and convenient arrangement.

[0020] In a possible implementation manner, the length of the coil winding is less than its outer diameter, and the width of the cooling fan is not less than the length of the coil winding.

[0021] By reasonably setting the width of the cooling fan, while facilitating the arrangement of the cooling fan, the heat dissipation effect of the cooling fan reaches the best.

[0022] In a possible implementation, the magnetic drive base device further includes a cover body, the cover body is installed on the fixing frame, the magnetic drive mechanism and the heat dissipation fan are covered in the cover body, the cover body is provided with ventilation holes, and the ventilation holes are communicated with the air inlet of the heat dissipation fan.

[0023] By providing the cover body, while facilitating the installation of the heat dissipation fan, it can also protect the magnetic drive mechanism and the heat dissipation fan, and the cover body can also play a role in dust prevention.

[0024] In a possible implementation, along the axial direction of the coil winding, the cover body integrally extends a protection part on both sides, and the protection part is used to block the part of the magnetic moving component extending out of the channel hole.

[0025] By providing the protection part, the cover body can also protect the magnetic moving component at the same time.

[0026] In a possible implementation, the magnetic drive base device further includes a temperature sensor for measuring the temperature of the coil winding, and the heat dissipation fan is set to be able to adjust the speed based on the measurement value of the temperature sensor.

[0027] By adjusting the speed of the heat dissipation fan according to the temperature of the coil winding, the temperature of the coil winding is kept below a preset value, so that the heat dissipation fan can stably dissipate heat from the coil winding.

[0028] The second aspect of the present application provides a rhythmic furniture, including the magnetic drive base device as described in the first aspect of the above embodiments and a furniture body, and the furniture body is installed on the rhythmic frame.

[0029] The rhythmic furniture according to the embodiments of the present application has at least the following beneficial effects:

[0030] Due to having the magnetic drive base device of the first aspect of the above embodiments, the rhythmic furniture of this embodiment can also improve the performance and lifespan to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic structural diagram of a magnetic drive base device according to an embodiment of the present application;

[0033] Figure 2Yes Figure 1 Cross-sectional schematic view of the magnetic drive mechanism of the middle magnetic drive base device;

[0034] Figure 3 Yes Figure 1 Schematic structural view of the coil bracket in the middle magnetic drive mechanism;

[0035] Figure 4 Yes Figure 1 Schematic view of the relative position between the magnetic drive mechanism and the cooling fan in the middle magnetic drive base device;

[0036] Figure 5 Yes Figure 4 Top view schematic of the structure in;

[0037] Figure 6 Yes Figure 4 Front view schematic of the structure in;

[0038] Figure 7 Schematic structural view of the cover body in the magnetic drive base device of an embodiment of the present application;

[0039] Figure 8 Is installed with Figure 7 Schematic structural view of the magnetic drive base device with the cover body in;

[0040] Reference numerals:

[0041] 100 - Fixed frame;

[0042] 200 - Rhythm frame;

[0043] 300 - Magnetic drive mechanism, 310 - Coil assembly, 311 - Coil bracket, 3111 - Cylindrical part, 3112 - Support side plate, 3113 - Annular groove, 312 - Coil winding, 313 - Channel hole, 320 - Magnetic moving assembly, 321 - Transmission shaft, 322 - Magnet;

[0044] 400 - Cooling fan, 410 - Housing, 420 - Blade, 430 - Air inlet, 440 - Air outlet;

[0045] 500 - Cover body, 510 - Top cover, 520 - Side plate, 521 - Ventilation hole, 530 - Accommodation cavity, 540 - Protection part, 541 - Groove part. Detailed implementation manners

[0046] The embodiments of the present implementation manner are described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present implementation manner and should not be construed as a limitation to the present implementation manner.

[0047] In the description of this embodiment, it should be understood that regarding the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing this embodiment and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this embodiment.

[0048] In the description of this embodiment, the meaning of "a number of" is one or more, the meaning of "a plurality of" is two or more. Understandings such as "greater than", "less than", "exceeding", etc. do not include the original number, and understandings such as "above", "below", "within", etc. include the original number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0049] In the description of this embodiment, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in this embodiment in combination with the specific content of the technical solution.

[0050] The following combines Figures 1 to 8 to introduce a magnetic drive base device of an embodiment of the present application. This magnetic drive base device is applicable to various rhythm furniture. The rhythm furniture includes a furniture body for carrying a user and a magnetic drive base device provided at the bottom of the furniture body. It should be noted that in some embodiments of the present application, the rhythm furniture is a rhythm chair, and the magnetic drive base device is located at the bottom of the rhythm chair; of course, in other embodiments, the magnetic drive base device can also be applied to rhythm sofas, rhythm beds, etc.

[0051] Figure 1 is a structural schematic diagram of a magnetic drive base device of an embodiment of the present application. As Figure 1 shown, the magnetic drive base device includes a fixed frame 100, a rhythm frame 200, and a magnetic drive mechanism 300. The rhythm frame 200 is arranged to be able to reciprocate relative to the fixed frame 100.

[0052] It can be understood that the magnetic drive mechanism 300 is used to drive the rhythm frame 200 to reciprocate relative to the fixed frame 100. Specifically, the magnetic drive mechanism 300 includes a coil assembly 310 and a magnetic drive assembly 320. Among them, the coil assembly 310 is connected to the fixed frame 100, and thus, the two are relatively fixed. The magnetic drive assembly 320 is connected to the rhythm frame 200, and thus, the two are also relatively fixed. When the magnetic drive mechanism 300 works, a magnetic field with a magnetic pole switching at a predetermined frequency is generated by energizing the coil assembly 310, so as to drive the magnetic drive assembly 320 to reciprocate in a preset direction. Thus, the magnetic drive assembly 320 can move relative to the coil assembly 310, thereby driving the rhythm frame 200 to move relative to the fixed frame 100.

[0053] Figure 2 Yes Figure 1 Cross-sectional schematic view of the magnetic drive mechanism of the magnetic drive base device Figure 3 Yes Figure 1 Schematic structural view of the coil bracket in the magnetic drive mechanism, as Figure 2 and Figure 3 shown, in some embodiments, the coil assembly 310 includes a coil bracket 311 and a coil winding 312 wound around the coil bracket 311. Among them, the coil bracket 311 has a cylindrical barrel portion 3111, and a through channel hole 313 is defined along the axial direction of the barrel portion 3111. It can be understood that, on the one hand, the outer wall of the barrel portion 3111 is used as a skeleton for winding the coil winding 312, and on the other hand, the channel hole 313 is used to accommodate the magnetic drive assembly 320. The magnetic drive assembly 320 includes a drive shaft 321 and a magnet 322 mounted on the drive shaft 321. And there is a certain gap between the outer wall of the magnetic drive assembly 320 and the inner wall of the channel hole 313, so that the magnetic drive assembly 320 can move freely in the channel hole 313 without being fixed or restricted. Thus, when the magnetic drive mechanism 300 works, the magnetic drive assembly 320 can move smoothly in the channel hole 313, there is no contact and friction between it and the coil bracket 311, the movement of the magnetic drive assembly 320 is stable, and thus the magnetic drive mechanism 300 has the working characteristics of no vibration and no noise.

[0054] It can be understood that the coil winding 312 can be formed by winding a wire. For example, it can be formed by winding a number of turns of pure copper enameled wire around the coil support 311. The specific winding data can be determined according to actual needs. It can also be understood that the coil winding 312 formed by wire winding has a cylindrical outer peripheral surface and annular end faces located on both sides in the axial direction of the coil winding 312. The outer peripheral surface and the two end faces together constitute the outer surface of the coil winding 312. It can be understood that the outer surface of the coil winding 312 is formed by the accumulation of the surfaces of the wires wound around each other and is not a continuously extending smooth surface. Of course, it can be understood that in order to provide insulation protection and prevent dust from falling in, a protective layer can also be coated on the outer periphery after the wire winding is completed.

[0055] It can be understood that when the magnetic drive mechanism 300 operates, a certain amount of heat will be generated when the current passes through the coil winding 312. If the current is too large or the magnetic pole switching frequency is faster, the heating phenomenon will be more obvious, which may cause the coil winding 312 to overheat and affect the performance and lifespan of the magnetic drive base device. Generally speaking, although the outer surface of the coil winding 312 can conduct natural convection with the surrounding air for heat dissipation, the heat dissipation efficiency of this method is relatively low.

[0056] Figure 4 Yes Figure 1 Schematic diagram of the relative positions of the magnetic drive mechanism and the cooling fan in the magnetic drive base device Figure 5 Yes Figure 4 Top view schematic diagram of the structure in Figure 4 And Figure 5 As shown in and, in order to avoid overheating of the coil winding 312, in this embodiment, the magnetic drive base device further includes a cooling fan 400. When the cooling fan 400 operates, it can push the air flow. By making the air flow through the outer surface of the coil winding 312, forced convection occurs on the outer surface of the coil winding 312, and thus the heat accumulated on the outer surface of the coil winding can be taken away in time, so that the temperature of the coil winding 312 is within a reasonable range, in order to avoid a series of problems such as low performance and shortened lifespan caused by overheating of the coil winding 312.

[0057] It can be understood that the cooling fan 400 can adopt a variety of different fan types, such as axial fans, centrifugal fans, and mixed-flow fans, etc. Since axial fans have the characteristics of being structurally compact and easy to install, and they push the air flow in the same axial direction, which is convenient for controlling the air flow direction, in this embodiment, the cooling fan 400 is preferably an axial fan.

[0058] Continue to refer to Figure 4 And Figure 5, the cooling fan 400 includes a housing 410 and blades 420 located inside the housing 410. Moreover, the housing 410 has an air inlet 430 and an air outlet 440 in the axial direction. During the operation of the cooling fan 400, air can enter the interior of the cooling fan 400 from the air inlet 430 and be discharged from the air outlet 440, flowing along the axial direction. Thus, by arranging the air outlet 440 at a certain angle towards the outer surface of the coil winding 312, the air flow can pass through the outer surface of the coil winding 312, thereby taking away the heat accumulated on the outer surface of the coil winding 312.

[0059] It can be understood that since the coil assembly 310 is connected to the fixing bracket 100 and the two are relatively fixed, in this embodiment, the cooling fan 400 is also directly or indirectly connected to the fixing bracket 100. For example, it is indirectly installed on the fixing bracket 100 through the following cover body 500. Thus, the relative fixation between the cooling fan 400 and the coil winding 312 enables the cooling fan 400 to continuously and stably dissipate heat from the coil winding 312, improving the reliability of heat dissipation.

[0060] As described above, the outer surface of the coil winding 312 includes a cylindrical outer peripheral surface and annular end surfaces located on both sides in the axial direction of the coil winding 312. In some embodiments, for the convenience of arrangement, the cooling fan 400 is arranged such that its air outlet 440 faces the outer peripheral surface. Thus, the air flow discharged from the air outlet 440 passes through the outer peripheral surface of the coil winding 312, thereby taking away the heat accumulated on the outer peripheral surface of the coil winding 312. And it can be understood that since the direction of the outer peripheral surface of the coil winding 312 has nothing to do with the movement direction of the magnetomotive component 320, the magnetomotive component 320 does not interfere with the arrangement and installation of the cooling fan 400. Therefore, the cooling fan 400 can be arranged conveniently and flexibly to effectively dissipate heat from the coil winding 312 and control costs.

[0061] Of course, it is not limited to this. When space permits and the heat dissipation effect can be ensured, the cooling fan 400 can also be arranged to push the air flow to pass through the end face, so as to take away the heat at the end face. Of course, it should be noted that in this case, the exposed end face can be directly cooled, or the end face can be indirectly cooled. For example, in some embodiments, in addition to the cylindrical barrel portion 3111, the coil bracket 311 further includes support side plates 3112 located at both ends of the barrel portion 3111. On the one hand, these two support side plates 3112 are used to connect with the fixing bracket 100 to fix the coil assembly 310. On the other hand, they jointly define an annular groove 3113 with the outer surface of the barrel portion 3111, which is convenient for winding the enameled wire to make the coil winding 312. In this case, the end face of the coil winding 312 is attached to and blocked by the support side plate 3112. Due to heat conduction, the support side plate 3112 will also generate heat. Therefore, the cooling fan 400 can be arranged to face the outer surface of the support side plate 3112, so that the air flow passes through the outer surface of the support side plate 3112 to cool the end face of the coil winding 312.

[0062] Figure 6 Yes Figure 4 The front view schematic diagram of the structure in, as Figure 6 shown. In order to improve the heat dissipation effect of the cooling fan 400 on the outer peripheral surface of the coil winding 312, in some embodiments, the air outlet 440 of the cooling fan 400 faces the outer peripheral surface of the coil winding 312, and the center of the orthographic projection of the cooling fan 400 coincides with the center of the orthographic projection of the outer peripheral surface. It can be understood that in this case, the axis of the cooling fan 400 passes through the diameter of the coil winding 312 and they coincide. Moreover, in the axial direction of the coil winding 312 itself, the axis of the cooling fan 400 is also at the middle position in the length direction of the coil winding 312. Therefore, the air flow discharged from the air outlet 440 can vertically flow to the outer peripheral surface of the coil winding 312 and has the largest coverage area, so as to achieve a better heat dissipation effect. It can also be understood that since the outer peripheral surface of the coil winding 312 is cylindrical, when the air flow vertically flows to the outer peripheral surface of the coil winding 312, the air flow can also be deflected by the arc surface of the outer peripheral surface of the coil winding 312 and flow in other directions of the outer peripheral surface, so that the air flow discharged from the air outlet 440 can cover a larger area region to effectively dissipate heat from the coil winding 312.

[0063] For the convenience of layout and to save space in the vertical direction, the coil assembly 310 is usually fixed to the fixing frame 100 in the horizontal direction. Thus, the magnetic drive assembly 320 reciprocates back and forth in the horizontal direction to drive the rhythm frame 200 to move. In some embodiments, for the convenience of layout and to save space in the vertical direction, the cooling fan 400 is arranged on the same horizontal plane as the coil winding 312. Thus, the cooling fan 400 and the coil assembly 310 can be staggered from each other and horizontally distributed. The fixing frame 100 has sufficient space in the horizontal direction. In this embodiment, although the cooling fan 400 is added, the height in the vertical direction is not increased, and it will not have an adverse impact on the positional relationship between the fixing frame 100 and the rhythm frame 200.

[0064] It can be understood that the outer peripheral surface of the coil winding 312 has two symmetric sides in the horizontal direction. To further improve the heat dissipation effect, as Figure 4 and Figure 5 shown, in some embodiments, a pair of cooling fans 400 are provided. This pair of cooling fans 400 are symmetrically arranged on both sides of the coil winding 312 in the horizontal direction. In this way, the two cooling fans 400 dissipate heat from the outer peripheral surface of the coil winding 312 from their respective sides, which has the characteristics of high heat dissipation efficiency. At the same time, the two cooling fans 400 are also very convenient to be arranged in the horizontal direction.

[0065] It can be understood that although the size of the cooling fan 400 can be increased to improve the heat dissipation capacity, if the size of the cooling fan 400 is too large, it will exceed the size range of the coil winding 312, which is not conducive to the layout of the cooling fan 400. If the size of the cooling fan 400 is too small, although it is convenient to be arranged on the fixing frame 100, there is a problem of insufficient heat dissipation capacity. Therefore, as Figure 6 shown, in some embodiments, the height H of the cooling fan 400 is set to be not greater than the outer diameter D of the coil winding 312. In this case, while ensuring the heat dissipation capacity of the cooling fan 400, it is also conducive to the layout of the cooling fan 400. Thus, a balance is achieved between the heat dissipation capacity and the convenience of layout.

[0066] Furthermore, in some embodiments, the outer diameter D of the coil winding 312 is greater than its length L. In this case, the width W of the cooling fan 400 can be set to be not less than the length L of the coil winding 312, so as to achieve the best heat dissipation effect of the cooling fan 400 while facilitating the layout of the cooling fan 400. For example, the width W of the cooling fan 400 is set to be slightly greater than the length L of the coil winding 312, so that the outer peripheral surface of the coil winding 312 can be covered by the cooling fan 400 in the length direction.

[0067] It should be noted that generally, the outer contour of the cooling fan is square, and its height H and width W are equal. Of course, when the shape of the cooling fan 400 is not square, its height H and width W can be understood as the maximum dimensions in the corresponding directions.

[0068] In addition, in order to achieve efficient heat dissipation, in some embodiments, the cooling fan 400 is set to have adjustable speed. Specifically, the magnetic drive base device further includes a temperature sensor (not shown in the figure) for measuring the temperature of the coil winding 312. The speed of the cooling fan 400 is adjusted based on the temperature information measured by the temperature sensor. Thus, when the temperature of the coil winding 312 is relatively low, the speed of the cooling fan 400 is reduced to reduce power consumption and noise. When the temperature of the coil winding 312 is too high, the speed of the cooling fan 400 is increased to improve the heat dissipation ability, so that the temperature of the coil winding 312 is kept below a preset value, enabling the cooling fan 400 to stably dissipate heat from the coil winding 312.

[0069] In some embodiments, the temperature sensor is attached to the surface of the coil winding 312, so as to accurately obtain the surface temperature of the coil winding 312 and use this temperature as the basis for speed adjustment, which is very convenient. To protect the temperature sensor, as described above, a protective layer (not shown in the figure) can be provided on the surface of the coil winding 312, thereby covering the temperature sensor therein. At the same time, it can also provide insulation protection for the outer peripheral surface of the coil winding 312 and prevent dust from falling in.

[0070] To facilitate the installation of the cooling fan 400, as Figure 7 and Figure 8 shown, in some embodiments, the magnetic drive base device further includes a cover 500. The cover 500 is installed on the fixing frame 100 and covers the magnetic drive mechanism 300 and the cooling fan 400. The cooling fan 400 is connected to the cover 500. The cover 500 is provided with ventilation holes, and the ventilation holes are communicated with the air inlet 430 of the cooling fan 400. By adding this cover 500, on the one hand, the cover 500 can serve as an installation base for installing the cooling fan 400. On the other hand, the magnetic drive mechanism 300 and the cooling fan 400 are covered in the cover 500 and thus protected, and at the same time, the cover 500 can also play a role in dust prevention.

[0071] Specifically, the cover 500 includes a top cover 510 and a plurality of side plates 520 connected to the top cover 510. The top cover 510 and the side plates 520 together define a receiving cavity 530 for receiving the magnetic drive mechanism 300 and the cooling fan 400. And, the side plate 520 for connecting the cooling fan 400 is provided with the aforementioned ventilation holes 521. When the cooling fan 400 is connected to the side plate 520, the ventilation holes 521 are exactly communicated with the air inlet 430 of the cooling fan 400, so that external air can flow into the air inlet 430 of the cooling fan 400 through the ventilation holes 521 and then enter the interior of the cooling fan 400. It can be understood that when two cooling fans 400 are provided, the two side plates 520 corresponding to both sides of the outer peripheral surface of the coil winding 312 in the cover 500 are respectively used to connect the cooling fans 400.

[0072] Further, in order to prevent foreign objects from entering the receiving cavity 530 through the ventilation holes 521, the ventilation holes 521 include a plurality of annular slits arranged at intervals around the same center. These annular slit structures can be formed by stamping process, which is convenient for processing and forming.

[0073] In some embodiments, a protection portion 540 extends integrally from the side plates 520 on both sides in the axial direction of the coil winding 312. The protection portion 540 is used to shield the part of the magnetic drive assembly 320 that extends out of the channel hole 313. Thus, it can prevent the magnetic drive assembly 320 from being damaged by collision when assembling and disassembling the rhythm frame 200 and the furniture body. It can be understood that for the convenience of manufacturing, the cover plate, the side plates 520, the protection portion 540, etc. can be formed by stamping a metal plate. Specifically, the protection portion 540 is bent from a plate and has a groove portion 541 with an opening downward. The size of the groove portion 541 is slightly larger than the outer contour of the magnetic drive assembly 320, so as to shield the part of the magnetic drive assembly 320 that extends out of the channel hole 313.

[0074] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this implementation. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0075] Although the embodiments of this implementation have been shown and described, those of ordinary skill in the art can understand that: various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this implementation. The scope of this implementation is defined by the claims and their equivalents.

Claims

1. A magnetic drive base device, characterized in that, Comprising: A fixing frame; A rhythm frame, which is arranged to be able to reciprocate relative to the fixing frame; A magnetic drive mechanism, including a coil assembly fixedly relative to the fixing frame and a magnetic moving assembly fixedly relative to the rhythm frame. The coil assembly includes a coil bracket with a through channel hole and a coil winding wound around the outer surface of the coil bracket, and the magnetic moving assembly passes through the channel hole; A cooling fan, connected to the fixing frame, and the cooling fan is arranged such that the airflow generated by it can flow through the outer surface of the coil winding.

2. The magnetic drive base device according to claim 1, wherein The outer surface includes a cylindrical outer peripheral surface, the air outlet of the cooling fan faces the outer peripheral surface, and the center of the orthographic projection of the cooling fan coincides with the center of the orthographic projection of the outer peripheral surface.

3. The magnetic drive base device according to claim 2, characterized in that The cooling fan and the coil winding are arranged on the same horizontal plane.

4. The magnetic drive base device according to claim 3, wherein There are a pair of cooling fans, and the pair of cooling fans are symmetrically arranged on both sides of the outer peripheral surface in the horizontal direction.

5. The magnetic drive base device according to claim 2, wherein The height of the cooling fan is not greater than the outer diameter of the coil winding.

6. The magnetic drive base device according to claim 5, characterized in that The length of the coil winding is less than its outer diameter, and the width of the cooling fan is not less than the length of the coil winding.

7. The magnetic drive base device according to any one of claims 1 to 6, characterized in that The magnetic drive base device further includes a cover body, the cover body is installed on the fixing frame, the magnetic drive mechanism and the cooling fan are covered in the cover body, the cover body is provided with ventilation holes, and the ventilation holes are communicated with the air inlet of the cooling fan.

8. The magnetic drive base device according to claim 7, characterized in that, Along the axial direction of the coil winding, the cover body integrally extends a protection part on both sides, and the protection part is used to block the part of the magnetic moving assembly extending out of the channel hole.

9. The magnetic drive base device according to any one of claims 1 to 6, characterized in that, The magnetic drive base device further includes a temperature sensor for measuring the temperature of the coil winding, and the cooling fan is arranged to be able to adjust its speed based on the measurement value of the temperature sensor.

10. A rhythm furniture, characterized in that, Comprising the magnetic drive base device according to any one of claims 1 to 9 and a furniture body, and the furniture body is installed on the rhythm frame.

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