Magnetic drive base device and rhythm furniture

Abstract

The utility model provides a magnetic drive base device which comprises a fixing frame, a rhythm frame and a magnetic drive mechanism, the magnetic drive mechanism comprises a coil assembly and a magnetic drive assembly, the coil assembly is arranged to switch magnetic poles at a preset frequency, and the magnetic drive assembly reciprocates in a variable magnetic field of the coil assembly; wherein the coil assembly comprises a coil support provided with a through axis hole, a coil winding and an iron core assembled in the axis hole, the magnetomotive assembly comprises a permanent magnet, and the center of the permanent magnet and the center of the coil assembly are arranged in a staggered mode in the axial direction so that the component force of the magnetic force borne by the permanent magnet in a magnetic field in the axial direction can not be zero. And the stroke of the reciprocating motion of the permanent magnet is at least partially located in the axis hole. The coil assembly axis assumes that the iron core enhances the magnetic field intensity, the axis hole can contain part of the permanent magnet, the permanent magnet always falls into the area with the strong magnetic field of the coil assembly in the reciprocating motion process, the whole-process magnetic force is balanced, the whole-stroke power of the magnetomotive assembly is sufficient, and smooth operation of the rhythm frame is guaranteed.

Description

Technical Field

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

[0002] To meet people's diverse needs, home furnishing products have gradually developed a variety of additional functions. Among them, rhythmic furniture helps users relax their whole body by reciprocating the base frame at a certain frequency within a predetermined stroke. It also has the effect of promoting digestion, burning fat and losing weight. It can effectively improve the quality of life of users and has gradually become a must-have leisure item in people's lives.

[0003] The main functional component of traditional rhythmic furniture is the base frame, which includes a fixed frame, a rhythmic frame, and a drive mechanism that drives the rhythmic frame to vibrate relative to the fixed frame. The drive mechanism is usually driven by a magnetic drive method. A common magnetic drive mechanism includes a coil and a magnet. The magnet is fixed to the side of the rhythmic frame, and the coil is fixed to the fixed frame and arranged directly opposite the magnet. By switching the direction of the current, the magnetic poles of the coil are changed, and the magnet and the coil alternately attract and repel each other, thereby driving the rhythmic frame to reciprocate. However, during the specific implementation process, the inventors found that when the magnet and the coil have the same poles facing each other and repel each other, the magnet moves in the direction away from the coil. As the magnet gradually moves away from the coil, the repulsive force of the coil on the magnet becomes weaker and weaker, the magnet power is insufficient, and the single movement range is limited. Conversely, the magnet will be attracted too close to the coil, or even collide with each other, which will not only accelerate the damage of the magnet or coil, but also cause the base frame to have obvious jamming, and the user experience is poor. Utility Model Content

[0004] In order to solve the above technical problems, the embodiments of the present application provide a magnetic drive base device and rhythmic furniture. The magnetic drive mechanism in the base device and the rhythmic furniture can output sufficient power to the outside while avoiding the occurrence of collision accidents.

[0005] A first aspect of the present application provides a magnetic drive base device, comprising:

[0006] Fixed frame;

[0007] a rhythm frame, the rhythm frame being configured to be capable of reciprocating motion relative to the fixed frame; and

[0008] A magnetic drive mechanism includes a coil assembly fixed relative to the fixed frame and a magnetic dynamic assembly fixed relative to the rhythm frame, wherein the coil assembly is configured to switch magnetic poles at a predetermined frequency, and the magnetic dynamic assembly is alternately driven by two oppositely directed magnetic forces within the changing magnetic field of the coil assembly, thereby driving the rhythm frame to reciprocate relative to the fixed frame;

[0009] In which, the coil assembly includes a coil bracket with a through-axial hole, a coil winding wrapped around the outer surface of the coil bracket and an iron core assembled in the axial hole, and the magnetic dynamic assembly includes a permanent magnet coaxially arranged with the coil bracket, and the center of the permanent magnet and the center of the coil assembly are axially offset so that the axial component of the magnetic force exerted on the permanent magnet in the magnetic field generated by the coil assembly when it is energized is not zero, and the reciprocating motion of the permanent magnet is at least partially located in the axial hole.

[0010] The magnetic drive base device according to the first aspect of the embodiment of the present application has at least the following beneficial effects:

[0011] By axially staggering the permanent magnet relative to the coil assembly, it is ensured that the axial component of the magnetic force exerted on the permanent magnet in the magnetic field generated by the coil assembly when energized is non-zero, thereby generating axial displacement and driving the rhythm frame to reciprocate. In addition, an axial hole is provided in the center of the coil support to accommodate at least a portion of the length of the permanent magnet, thereby avoiding the risk of axial collision with the coil assembly. During the reciprocating motion, the permanent magnet will not deviate too far from the area with a strong magnetic field of the coil assembly as a whole, thereby ensuring sufficient magnetic force during the rhythm process. On the other hand, an iron core is added in the axial hole to enhance the magnetic field strength of the coil assembly and further improve the magnetic force strength of the magnetic drive mechanism.

[0012] In one possible implementation, the permanent magnet is axially spaced a predetermined distance L from the iron core, and the predetermined distance L is greater than half the reciprocating stroke of the permanent magnet. Setting the predetermined distance L between the permanent magnet and the iron core to be greater than half the reciprocating stroke of the permanent magnet ensures that the permanent magnet does not collide with the end face of the iron core during reciprocating motion.

[0013] In one possible embodiment, two permanent magnets are provided, one at each end of the iron core, and the two permanent magnets have the same magnetic poles at the end closest to the iron core. By arranging the two permanent magnets with their ends having the same magnetic poles facing each other, the magnetic forces exerted on the two permanent magnets within the magnetic field of the coil assembly can be superimposed in the same direction, thereby generating greater power for the magnetic dynamic assembly.

[0014] In one possible embodiment, the magnetic assembly further includes an adapter bracket fixed relative to the rhythm frame, the adapter bracket including two adapter plates arranged in parallel at a predetermined distance, and a fixed rod fixed between the two adapter plates, the permanent magnets being fixed in series on the fixed rods, and the permanent magnets being axially positioned by a positioning member so that the fixed rods move synchronously with the permanent magnets. The magnetic assembly is assembled and fixed to the rhythm frame using the adapter bracket, wherein the two adapter plates are used to fix the two ends of the fixed rods, the permanent magnets are correspondingly arranged in series in the middle of the fixed rods, the positioning member axially positions the permanent magnets so that the fixed rods move synchronously with the permanent magnets, and the fixed rods are fixedly connected to the rhythm frame via the adapter plates, thereby driving the rhythm frame to move synchronously back and forth. The structure is simple and easy to install.

[0015] In one possible embodiment, the adapter plate has a socket corresponding to the fixed rod, with both ends of the fixed rod inserted into the sockets. A locking member is provided at the outer end of the adapter plate to lock the fixed rod. By providing the sockets on the adapter plate to secure the fixed rod, the entire magnetic assembly is secured, preventing radial displacement of the magnetic assembly and ensuring the structural stability of the magnetic drive base device.

[0016] In one possible implementation, the rhythm rack includes:

[0017] A bed frame is arranged parallel to the top of the fixing frame;

[0018] There are a plurality of keels, which are laid in the bed frame at predetermined intervals, and

[0019] The first support frames are provided in two groups and are respectively provided at the head and tail ends of the length direction of the bed frame and extend toward the fixed frame. Each group of the first support frames includes at least one vertical rod fixed relative to the bed frame and a horizontal rod fixed to the bottom end of the vertical rod. The height of the horizontal rod is not higher than the top edge of the fixed frame. There is also a connecting mechanism that connects the rhythm frame and the fixed frame with one end connected to and fixed to the horizontal rod and the other end fixed to the fixed frame. By setting the horizontal rod of the first support frame to be lower than the top edge of the fixed frame, the first support frame is used to move the supporting force point of the rhythm frame downward. Compared with the structural design that only relies on the connecting mechanism to lift and support the rhythm frame, the connecting mechanism in the solution of this embodiment can transfer the force to the entire fixed frame, which is more structurally stable and less likely to cause the rhythm frame to collapse.

[0020] In a possible implementation, the fixing frame includes:

[0021] A base frame is arranged parallel to the bottom of the bed frame, and the length of the base frame is smaller than that of the bed frame;

[0022] A bottom plate is laid in the base frame, and the coil assembly is fixed on the bottom plate;

[0023] a foot support fixed to the bottom of the base frame and having a hemispherical support portion formed at the end; and

[0024] The second support frames are provided in two groups and are respectively supported at the longitudinal ends of the base frame and extend toward the bed frame. Each group of the second support frames includes at least one column fixed relative to the base frame and a crossbeam fixed to the top of the column. The height of the crossbeam is not lower than the bottom edge of the bed frame. The two ends of the connecting mechanism connect the rhythm frame and the fixed frame respectively at the crossbar and the crossbeam. The second support frames are used to further elevate the support point of the fixed frame. Sufficient space can be reserved between the crossbeam and the crossbar for the assembly and fixation of the connecting mechanism, which also helps to enhance the structural strength of the connecting mechanism to enhance the load-bearing performance of the rhythmic furniture.

[0025] In one possible embodiment, at least one elastic stopper is provided on the outer end surface of each crossbeam. The stopper abuts the bed frame to locate the limit position of the reciprocating motion of the rhythm frame relative to the fixed frame. The elastic stopper defines the limit position of the rhythm frame, thereby preventing rigid collision between the rhythm frame and the fixed frame, which could cause physical wear and damage to the structural stability.

[0026] In one possible embodiment, the connection mechanism includes pivot seats fixed to the crossbeam and the crossbar, respectively, and support plates having pivot shafts formed at both ends and correspondingly pivoted to the pivot seats, wherein the pivot shafts are perpendicular to the central axis of the coil assembly. The support plates are hingedly connected to the fixed frame and the rhythm frame at both ends, and the end of the support plate connected to the rhythm frame is lower than the end connected to the fixed frame in the direction of gravity. Based on the pivoting of the pivot shafts, the rhythm frame will perform a reciprocating motion similar to a pendulum. The magnetic assembly drives the rhythm frame to move under the action of magnetic force, while overcoming the action of gravity and increasing the gravitational potential energy of the rhythm frame. When switching directions, the gravitational potential energy is converted into kinetic energy, thereby enhancing the return swing power of the rhythm frame, repeating the cycle to achieve a strong rhythm effect.

[0027] The second aspect of the present application provides a rhythmic furniture, which adopts the magnetic drive base device and furniture body described in any one of the above items, and the furniture body is installed on the rhythmic frame to achieve the rhythmic effect of carrying the user to perform reciprocating motion. The swinging process is smooth without bumps and jams, and the power is still sufficient for long-term operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 It is a schematic diagram of the overall three-dimensional structure of an optional embodiment of the present application.

[0030] Figure 2 This is a schematic diagram of the exploded structure of an optional embodiment of the present application after the rhythm frame and the fixed frame are separated.

[0031] Figure 3 yes Figure 1 Schematic diagram of the cross section along the center axis of the axial hole.

[0032] Reference numerals: fixing frame 1, base frame 10, bottom plate 12, foot support 14, support portion 141, second support frame 16, column 161, crossbeam 163, limiter 18,

[0033] Rhythm frame 2, bed frame 21, keel 23, first support frame 25, vertical rod 250, horizontal rod 252;

[0034] Connecting mechanism 3, pivot seat 30, support plate 32, pivot shaft 34;

[0035] Magnetic drive mechanism 4, coil assembly 41, coil bracket 410, coil winding 412, axial hole 4101, iron core 414, mounting plate 416; magnetic dynamic assembly 43, permanent magnet 430, adapter bracket 432, adapter plate 4321, fixing rod 4323, positioning piece 4325, locking piece 4327, socket 4321a, guide groove 4321b. DETAILED DESCRIPTION

[0036] Examples of the present embodiment are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present embodiment and are not to be construed as limiting the present embodiment.

[0037] In the description of this embodiment, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this embodiment.

[0038] In the description of this embodiment, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0039] In the description of this embodiment, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this embodiment based on the specific content of the technical solution.

[0040] Magnets include hard magnets and soft magnets. The permanent magnet 430 in this application is a hard magnet, and the coil assembly 41 is a soft magnet. When energized, the coil assembly 41 generates a magnetic field, and a south pole and a north pole are formed at the two ends of the coil assembly 41. The magnetic field strength distribution pattern is as follows: the closer to the two ends of the coil assembly 41, the greater the magnetic field strength. At this time, the permanent magnet 430 located in the magnetic field of the coil assembly 41 will be affected by the magnetic force and move in one direction under the drive of the magnetic force. When the current direction of the coil assembly 41 is switched, the direction of the magnetic pole of the coil assembly 41 is reversed. At this time, the permanent magnet 430 will be subjected to a magnetic force opposite to the current direction of movement. After being subjected to the force, the permanent magnet 430 stops its current movement trend and then moves in the opposite direction. By reasonably controlling the switching frequency of the current direction, the reciprocating motion of the magnetic dynamic assembly 43 can be achieved.

[0041] See also Figure 1 and Figure 2 , Figure 1 The three-dimensional structure of a magnetic drive base device of the present application is shown; Figure 2 right Figure 1 Schematic diagram of the structure after the device is disassembled, one embodiment of the present application, the magnetic drive base device includes a fixed frame 1, a rhythm frame 2 and a magnetic drive mechanism 4 that drives the rhythm frame 2 to reciprocate relative to the fixed frame 1, the coil assembly 41 in the magnetic drive mechanism 4 is relatively fixed to the fixed frame 1 and the magnetic dynamic assembly 43 is relatively fixed to the rhythm frame 2, the coil assembly 41 is configured to rotate the magnetic pole at a predetermined frequency, and the magnetic dynamic assembly 43 is alternately driven by two opposite directions of magnetic forces in the changing magnetic field of the coil assembly 41, thereby driving the rhythm frame 2 to reciprocate relative to the fixed frame 1.

[0042] Furthermore, the coil assembly 41 includes a coil support 410 having an axial hole 4101 extending therethrough, a coil winding 412 wrapped around the outer surface of the coil support 410, and an iron core 414 assembled in the axial hole 4101. The magnetic dynamic assembly 43 includes a permanent magnet 430 coaxially arranged with the coil support 410, and the center of the permanent magnet 430 is axially offset from the center of the coil assembly 41 so that the axial component of the magnetic force exerted on the permanent magnet 430 in the magnetic field generated when the coil assembly 41 is energized is not zero, and the reciprocating motion of the permanent magnet 430 is at least partially located in the axial hole 4101.

[0043] During the specific implementation process, after the coil assembly 41 is energized, a predetermined magnetic field is formed. The permanent magnet 430 is subjected to a corresponding magnetic force in the predetermined magnetic field and is driven by the magnetic force to move axially, and the rhythm frame 2 also moves synchronously. After a predetermined interval, the direction of the current in the coil assembly 41 is reversed, and the permanent magnet 430 is subjected to an opposite magnetic force in the magnetic field. Under the action of this magnetic force, the permanent magnet 430 gradually stops the movement trend in the current direction and then moves in the opposite direction. Alternating the current direction can form reciprocating motion.

[0044] Furthermore, the magnetic drive mechanism 4 in the present application can be provided in multiple groups, with the multiple groups of magnetic drive mechanisms 4 arranged at intervals between the fixed frame 1 and the rhythm frame 2, thereby providing more uniform and comprehensive force transmission. In addition, each group of magnetic drive mechanisms 4 can also be accompanied by a group of connecting mechanisms 3, which can realize the distribution and control of the supporting force of the fixed frame 1 on the rhythm frame 2, avoiding tilting or instability, thereby reducing the vibration and swing of the entire base device and improving the stability during operation; each group of magnetic drive components 43 can apply magnetic force to the rhythm frame 2, so that the force can be evenly distributed throughout the frame system of the rhythm frame 2, thereby enhancing the power transmission effect.

[0045] See also Figure 3An iron core 414 is assembled within the axial bore of the coil assembly 41 to enhance the magnetic field strength of the coil assembly 41. Specifically, the iron core 414 can make the magnetic flux lines of the coil assembly 41 more evenly distributed, thereby making the magnetic flux lines distributed in the axial direction more dense. The corresponding magnetic force acting on the permanent magnet 430 is also greater, further improving the magnetic force strength of the magnetic drive mechanism 4. At the same time, to prevent the permanent magnet 430 from straying too far from the area with a stronger magnetic field of the coil assembly 41 during movement, at least a portion of the reciprocating motion of the permanent magnet 430 is located within the axial bore 4101. This ensures that the magnetic force acting on the magnetic drive assembly 43 during reciprocating motion is sufficient and balanced, ensuring smooth rhythmic motion of the rhythm frame 2 and improving user comfort. It is understood that to prevent collision between the permanent magnet 430 and the iron core 414, when the coil assembly 41 is not energized, the predetermined axial distance L between the permanent magnet 430 and the iron core 414 should be greater than half the reciprocating stroke of the permanent magnet 430.

[0046] In some embodiments, see Figure 3 The two permanent magnets 430 are provided at both ends of the iron core 414, and the magnetic poles of the two permanent magnets 430 on the ends closest to the iron core 414 are the same. By arranging the two permanent magnets 430 with the ends having the same magnetic poles facing each other, the magnetic forces exerted on the two permanent magnets 430 within the magnetic field of the coil assembly 41 are always in the same direction, eliminating any magnetic force cancellation. The superposition of the same-direction magnetic forces allows the magnetic dynamic assembly 43 to generate greater power.

[0047] In some embodiments, see Figure 2The magnetic assembly 43 also includes an adapter bracket 432 fixed relative to the rhythm frame 2, and the adapter bracket 432 includes two adapter plates 4321 arranged in parallel with a predetermined distance, and a fixed rod 4323 fixed between the two adapter plates 4321. The permanent magnet 430 is fixed in series on the fixed rod 4323, and the permanent magnet 430 is axially positioned by the positioning member 4325 so that the fixed rod 4323 moves synchronously with the permanent magnet 430. The magnetic assembly 43 is assembled and fixed to the rhythm frame 2 using an adapter bracket 432, wherein two adapter plates 4321 are used to fix the two ends of the fixed rod 4323, and the permanent magnet 430 is correspondingly arranged in series at the middle position of the fixed rod 4323. The positioning member 4325 axially positions the permanent magnet 430 so that the fixed rod 4323 and the permanent magnet 430 move synchronously. The fixed rod 4323 is fixedly connected to the rhythm frame 2 through the adapter plate 4321, thereby driving the rhythm frame 2 to move synchronously. The structure is simple, easy to install, and the effect is firm. It is understandable that the positioning member 4325 can be a common structural member that is screwed and locked on the fixed rod 4323, such as a screw, and the screws are screwed and locked on both sides of the permanent magnet 430, thereby preventing the permanent magnet 430 from sliding axially. Alternatively, a slot can be provided on the fixed rod 4323, and the permanent magnet 430 can be fixed by a common structural member such as a buckle or a retaining spring. Alternatively, a structural member such as a retaining ring can be sleeved and fixed in the slot.

[0048] Further, see Figure 2 and Figure 3 The adapter plate 4321 is provided with a socket 4321a corresponding to the fixing rod 4323. The two ends of the fixing rod 4323 are respectively inserted into the socket 4321a. A locking member 4327 is provided to lock the fixing rod 4323 from the outer end of the adapter plate 4321. By providing the socket 4321a on the adapter plate 4321, the fixing rod 4323 is fixedly installed, thereby fixing the entire magnetic assembly 43, preventing the magnetic assembly 43 from shifting in the radial direction, and ensuring the structural stability of the magnetic drive base device. In a specific implementation, the locking member 4327 can be a common structural member such as a screw, a latch, a buckle, or a clamp. When a screw is used, a screw can be provided on each of the inner and outer sides of the adapter plate 4321 to clamp and fix the adapter plate 4321 and the fixing rod 4323.

[0049] Therefore, during the assembly process, the permanent magnet 430 should be first strung on the fixed rod 4323, and the positioning piece 4325 should be installed to fix the permanent magnet 430. Then, the two ends of the fixed rod 4323 should be inserted into the socket 4321a of the adapter plate 4321 at the corresponding ends, and the locking piece 4327 should be installed at the outer end to firmly connect the adapter plate 4321 and the fixed rod 4323. It can be understood that before installing the fixing rod 4323, at least one of the adapter plates 4321 cannot be pre-fixed to the rhythm frame 2 to facilitate the insertion operation of the fixing rod 4323; or both adapter plates 4321 are pre-fixed on the rhythm frame 2, and at the same time, guide grooves 4321b extending to the edges of the adapter plates 4321 are opened around the holes of the two insertion holes 4321a, and the fixing rod 4323 with the permanent magnet 430 fixed in series slides from the opening of the guide groove 4321b on the edge of the adapter plate 4321 along the groove wall of the guide groove 4321b, and finally presses into the insertion hole 4321a, and finally the fixing rod 4323 is locked by the locking piece 4327.

[0050] See also Figure 2 In some embodiments, the rhythm frame 2 includes a top bed frame 21 arranged parallel to the fixed frame 1, a plurality of keels 23 laid in the bed frame 21 at a predetermined distance, and two groups of first support frames 25 respectively arranged at the head and tail ends of the length direction of the bed frame 21 and extending toward the fixed frame 1. Each group of first support frames 25 includes at least one vertical rod 250 fixed relative to the bed frame 21 and a horizontal rod 252 fixed to the bottom end of the vertical rod 250. The height of the horizontal rod 252 is not higher than the top edge of the fixed frame 1. There is also a connecting mechanism 3 with one end connected to the fixed horizontal rod 252 and the other end fixed to the fixed frame 1 to connect the rhythm frame 2 and the fixed frame 1. By setting the cross bar 252 of the first support frame 25 to be lower than the top edge of the fixed frame 1, the first support frame 25 is used to move the support force point of the rhythm frame 2 downward. Compared with the structural design that only relies on the connecting mechanism 3 to support the rhythm frame 2, the connecting mechanism 3 in the solution of this embodiment can transfer the force to the entire fixed frame 1, which is more structurally stable and less likely to cause the rhythm frame 2 to collapse.

[0051] Furthermore, the fixed frame 1 includes a base frame 10 arranged parallel to the bottom of the bed frame 21, a bottom plate 12 laid inside the base frame 10, a foot support 1414 fixed to the bottom of the base frame 10, and a second support frame 16 respectively supported at the head and tail ends of the length direction of the base frame 10 and extending toward the bed frame 21. The base frame 10 is arranged to be shorter than the bed frame 21 so that there is enough space between the first support frame 25 and the second support frame 16 to be staggered in the length direction of the rhythmic furniture. Each group of the second support frames 16 includes at least one column 161 fixed relative to the base frame 10 and a crossbeam 163 fixed to the top of the column 161. The height of the crossbeam 163 is not lower than the bottom edge of the bed frame 21. The two ends of the connecting mechanism 3 are respectively connected to the cross bar 252 and the crossbeam 163 to connect the rhythmic frame 2 and the fixed frame 1. The second support frame 16 is used to further elevate the support point of the fixed frame 1. Sufficient space is reserved between the crossbeam 163 and the crossbar 252 for the assembly and fixation of the connecting mechanism 3. This also helps to strengthen the structural strength of the connecting mechanism 3 by increasing the material volume, thereby improving the load-bearing capacity of the rhythmic furniture. The end of the foot support 1414 forms a hemispherical support portion 141141, which increases the contact surface between the fixed frame 1 and the placement platform, ensuring a more stable placement of the magnetic drive base device. Specifically, the hemispherical support portion 141141 can be made of a tough material such as rubber, providing a certain cushioning and shock-absorbing effect, reducing the shaking of the fixed frame 1 during the operation of the rhythmic frame 2.

[0052] In practice, each outer end face of the second support frame 16 is equipped with at least one elastic stopper 18. Because the crossbeam 163 of the second support frame 16 is at least as high as the bottom edge of the bed frame 21, the reciprocating motion of the rhythm frame 2 corresponds to movement toward the stopper 18 on different sides. As can be expected, when the rhythm frame 2 contacts the stopper 18, it becomes difficult for the rhythm frame 2 to continue moving in the same direction. This represents the limit position of the rhythm frame 2. The elastic stopper 18 defines the limit position of the rhythm frame 2 to prevent rigid collisions between the rhythm frame 2 and the fixed frame 1, which could cause physical wear and damage the structural stability. It should be understood that the limit position is not equivalent to the reciprocating stroke of the rhythm frame 2. The rhythm frame 2 can completely reverse and retreat in the opposite direction when it no longer contacts the stopper 18. In practice, the elastic stopper 18 can be a component with a certain degree of elastic deformation, such as a rubber nail, a foamed plastic block, or a spring.

[0053] In some embodiments, the connecting mechanism 3 includes a pivot seat 30 fixed to the crossbeam 163 and the crossbar 252, respectively, and a support plate 32 pivotally connected to the pivot seat 30, each having a pivot axis 34 formed at each end. The pivot axis 34 is perpendicular to the central axis of the coil assembly 41. The support plate 32 is hingedly connected to the fixed frame 1 and the rhythm frame 2 at both ends. The crossbeam 163 is higher in height than the crossbar 252, so that the end of the support plate 32 connected to the rhythm frame 2 is lower in the direction of gravity than the end connected to the fixed frame 1. Based on the pivoting of the pivot axis 34, the rhythm frame 2 performs a reciprocating motion similar to a pendulum. Therefore, the magnetic force acting on the magnetic assembly 43 drives the rhythm frame 2 to move, while overcoming gravity and increasing the gravitational potential energy of the rhythm frame 2. When switching directions, the gravitational potential energy is converted into kinetic energy, thereby enhancing the return swing force of the rhythm frame 2. This cycle repeats, achieving a more powerful rhythm effect. During the specific implementation process, multiple groups of connecting mechanisms 3 can be provided to more stably support the rhythm frame 2 and make the swing of the rhythm frame 2 more stable and gentle.

[0054] It can be understood that in order to ensure that the axial hole 4101 and the magnetic dynamic component 43 do not interfere with each other, the inner diameter of the axial hole 4101 should be adapted to the outer diameter of the permanent magnet 430, thereby forming a clearance fit; on the other hand, the fixed frame 1 and the rhythm frame 2 are connected by a corresponding connecting mechanism 3: the connecting mechanism 3 can be designed to drive the rhythm frame to generate displacement only in the axial direction parallel to the axial hole 4101; or the clearance fit design between the axial hole 4101 and the permanent magnet 430 includes a space for offsetting the displacement of the rhythm frame driven by the connecting mechanism 3 in the radial direction of the axial hole 4101. The accumulated displacement of the rhythm frame driven by the connecting mechanism 3 in the axial direction of the axial hole 4101 is the reciprocating stroke of the rhythm frame 2.

[0055] The magnetic drive assembly 43 in the magnetic drive mechanism 4 of the present application is used to drive the rhythm frame 2 to reciprocate. The coil assembly 41 must be relatively stationary, that is, there is no relative movement between the coil assembly 41 and the base plate. Specifically, a mounting plate 416 is further provided at the bottom of the coil assembly 41. The bottom of the mounting plate 416 can be connected and fixed to the base plate by welding, integral molding, screw locking, etc. The iron core 414 is preferably integrally formed with the coil support 410.

[0056] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present embodiment. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0057] Although examples of the present embodiment have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and intent of the present embodiment, and the scope of the present embodiment is defined by the claims and their equivalents.

Claims

1. A magnetic drive base device, characterized in that: include: Fixed frame; A rhythm frame, the rhythm frame being configured to be capable of reciprocating motion relative to the fixed frame; as well as A magnetic drive mechanism includes a coil assembly fixed relative to the fixed frame and a magnetic dynamic assembly fixed relative to the rhythm frame, wherein the coil assembly is configured to switch magnetic poles at a predetermined frequency, and the magnetic dynamic assembly is alternately driven by two oppositely directed magnetic forces within the changing magnetic field of the coil assembly, thereby driving the rhythm frame to reciprocate relative to the fixed frame; In which, the coil assembly includes a coil bracket with a through-axial hole, a coil winding wrapped around the outer surface of the coil bracket and an iron core assembled in the axial hole, and the magnetic dynamic assembly includes a permanent magnet coaxially arranged with the coil bracket, and the center of the permanent magnet and the center of the coil assembly are axially offset so that the axial component of the magnetic force exerted on the permanent magnet in the magnetic field generated by the coil assembly when it is energized is not zero, and the reciprocating motion of the permanent magnet is at least partially located in the axial hole.

2. The magnetic drive base device according to claim 1, characterized in that: The permanent magnet and the iron core are spaced apart from each other by a predetermined distance in the axial direction, and the predetermined distance is greater than half of the reciprocating stroke of the permanent magnet.

3. The magnetic drive base device according to claim 2, characterized in that: The number of the permanent magnets is two, and the permanent magnets are respectively arranged at two ends of the iron core, and the magnetic poles of the two permanent magnets close to one end of the iron core are the same.

4. The magnetic drive base device according to claim 1, wherein: The magnetic dynamic assembly also includes an adapter bracket fixed relative to the rhythm frame, the adapter bracket includes two adapter plates arranged in parallel at a predetermined distance, and a fixed rod fixed between the two adapter plates. The permanent magnet is fixed in series on the fixed rod, and the permanent magnet is axially positioned by a positioning member so that the fixed rod moves synchronously with the permanent magnet.

5. The magnetic drive base device according to claim 4, characterized in that: The adapter plate is provided with an insertion hole corresponding to the fixing rod, and both ends of the fixing rod are respectively inserted into the insertion holes. A locking piece is provided to lock the fixing rod from the outer end of the adapter plate.

6. The magnetic drive base device according to claim 1, characterized in that: The rhythm frame comprises: A bed frame is arranged parallel to the top of the fixing frame; There are a plurality of keels, which are laid in the bed frame at predetermined intervals, and The first support frame is provided in two groups and is respectively arranged at the head and tail ends of the length direction of the bed frame and extends toward the fixed frame. Each group of the first support frames includes at least one vertical rod fixed relative to the bed frame and a horizontal rod fixed to the bottom end of the vertical rod. The height of the horizontal rod is not higher than the top edge of the fixed frame. There is also a connecting mechanism with one end connected to and fixed to the horizontal rod and the other end fixed to the fixed frame to connect the rhythm frame and the fixed frame.

7. The magnetic drive base device according to claim 6, characterized in that: The fixing frame comprises: A base frame is arranged parallel to the bottom of the bed frame, and the length of the base frame is smaller than that of the bed frame; A bottom plate is laid in the base frame, and the coil assembly is fixed on the bottom plate; a foot support fixed to the bottom of the base frame and having a hemispherical support portion formed at the end; and The second support frame is provided in two groups and is respectively supported at the head and tail ends of the length direction of the base frame and extends toward the bed frame. Each group of the second support frame includes at least one column fixed relative to the base frame and a crossbeam fixed to the top of the column. The height of the crossbeam is not lower than the bottom edge of the bed frame. The two ends of the connecting mechanism are respectively connected to the rhythm frame and the fixed frame at the cross bar and the crossbeam.

8. The magnetic drive base device according to claim 7, characterized in that: At least one elastic limiting member is provided on the outer end surface of each crossbeam, and the limiting member abuts against the bed frame to locate the extreme position of the reciprocating motion of the rhythm frame relative to the fixed frame.

9. The magnetic drive base device according to claim 7, characterized in that: The connecting mechanism includes pivot seats respectively fixed on the cross beam and the cross bar, and support plates with pivot shafts formed at both ends respectively and correspondingly pivoted to the pivot seats. The pivot shafts are perpendicular to the central axis of the coil assembly.

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

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