A magnetic swing chair structure

Abstract

The present invention relates to the technical field of leisure seats, and discloses a magnetic attraction type swing chair structure, including a chair body, a chair bracket, arc tracks are arranged on both sides of the upper end of the chair bracket, a slider is arranged on the top surface of the arc track, a connecting seat for connecting with the bottom of the chair body is arranged on the slider, a bearing assembly for rolling friction with the arc track is arranged on the slider, a magnet positioning seat is arranged on the lower side of the arc track and moves synchronously with the slider, and at least one magnet assembly that can magnetically attract the arc track is arranged on the magnet positioning seat. The present invention has the beneficial effects of stable performance, low friction resistance, low noise, long service life, and better experience.

Description

Technical Field

[0001] The invention relates to the technical field of leisure seats, and in particular to a magnetic swing chair structure. Background Art

[0002] Chairs are a common piece of furniture for daily life. Whether they are home chairs or office chairs, they are usually static, unable to swing or do swing movements, with relatively simple functions and insufficient leisure performance. In order to improve the leisure performance of chairs, there are many electric rocking chairs and electric swing chairs on the market, which can automatically control the swinging of the chairs, thereby improving the leisure performance. However, current swing chairs are usually suspended or track-supported. Suspended swing chairs are suspended by slings, occupy a large space, and are not suitable for use in indoor environments such as homes or offices; track-type swing chairs roll, rub, and reciprocate on a curved track through a slider. However, the weight of the human body plus the weight of the chair is relatively heavy, which results in a very large friction between the track and the bearing. The track and bearing are easily worn, have a short service life, and poor stability. In addition, the large friction between the bearing and the track causes a large noise, which affects the comfort of use.

[0003] For example, the Chinese patent application number is 2019100836478, and the application publication date is 2019 / 4 / 19. It discloses a track-type electric swing chair structure. This type of swing chair rolls and rubs against the curved track through support rollers. The curved track is easy to wear, and the support roller has a short service life, which will generate a lot of noise during the overall use. Summary of the invention

[0004] In order to solve the above-mentioned problems existing in the swing chair in the prior art, the present invention provides a magnetic swing chair structure with stable performance, small friction resistance, low noise, long service life and better user experience.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A magnetic swing chair structure includes a chair body and a chair bracket. Both sides of the upper end of the chair bracket are provided with an arc track. The top surface of the arc track is provided with a slider. The slider is provided with a connecting seat for connecting with the bottom of the chair body. The slider is provided with a bearing assembly that rolls and rubs with the arc track. The lower side of the arc track is provided with a magnet positioning seat that moves synchronously with the slider. The magnet positioning seat is provided with at least one magnet assembly that can magnetically attract the arc track. When a user sits on the chair body, the arc track bears the weight of the chair body and the human body. In this structure, the magnetic attraction between the magnet assembly on the lower side of the arc track and the arc track offsets most of the gravity, thereby greatly reducing the pressure on the arc track, and then reducing the friction between the bearing assembly and the arc track. The swing of the chair body is more stable and the friction resistance is small. The friction noise between the bearing assembly and the arc track is also very small. The arc track and the bearing assembly are not easy to wear, and the overall service life is significantly improved, and the user's body feeling is better.

[0007] Preferably, a plurality of vertical slide bars are fixed to the lower end of the slider, the magnet positioning seat is slidably connected to the slide bars, a bottom plate is fixed to the lower end of the slide bars, and the magnet positioning seat is also provided with an electric lifting mechanism for driving the magnet positioning seat to rise and fall. The two magnet assemblies have better stability, and the electric lifting mechanism can adjust the distance between the magnet assembly and the arc track, thereby changing the magnetic attraction between the magnet assembly and the arc track, and then adjusting the friction between the bearing assembly and the arc track.

[0008] As a preferred embodiment, the electric lifting mechanism comprises a motor, a driving gear and a driven gear. The motor is fixed on a magnet positioning seat, the driving gear is fixed to the shaft end of the motor, the driven gears are distributed on both sides of the driving gear and mesh with the driving gear, a gear limit seat is provided on the magnet positioning seat on the outside of the driven gear, a screw sleeve is fixed at the axis of the driven gear, the screw sleeve passes through the gear limit seat, a vertical screw is provided in the screw sleeve, and the upper end of the vertical screw is fixedly connected to the slider. When the motor rotates, the two driven gears are driven to rotate synchronously through the driving gear, the screw sleeve rotates synchronously with the driven gear, and the screw sleeve moves along the vertical screw. By changing the rotation of the motor, the lifting and lowering of the magnet positioning seat can be conveniently realized, and then the distance between the magnet assembly and the arc track can be accurately controlled, that is, the magnetic attraction between the magnet assembly and the arc track can be accurately controlled; when the upper end of the magnet assembly is completely in contact with the arc track, the entire chair body and the arc track are completely positioned and cannot swing, and it becomes a normal seat.

[0009] Preferably, there are two magnet assemblies, which are fixed at two ends of the top surface of the magnet positioning seat, and the magnet assemblies are permanent magnets or electromagnets. The magnetic attraction generated by the two magnet assemblies is more stable.

[0010] Preferably, the top surface of the magnet assembly is an inclined surface, and the perpendicular midline of the top surface of the magnet assembly passes through the center of the circle corresponding to the arc track. During the sliding process of the slider, the gap between the top surface of the magnet assembly and the arc track remains consistent.

[0011] Preferably, a flexible gasket is fixed on the top surface of the magnet assembly. When the magnet assembly and the arc track are attracted together, the flexible gasket plays a buffering role to prevent rigid collision between the two, thereby protecting the magnet assembly and the arc track.

[0012] Preferably, the bearing assembly has two groups, and the two groups of bearing assemblies are respectively fixed at the two ends of the slider. The bearing assembly includes a bearing positioning block, and the two ends of the bearing positioning block are provided with a bearing limit cavity. Each bearing limit cavity is provided with a bearing seat and a support bearing rotatably connected to the bearing seat. The bearing seat is slidably connected to the bearing limit cavity, and a pressure sensor is provided between the upper end of the bearing seat and the bottom surface of the slider. The pressure sensor can detect the pressure on the support bearing, and the distance between the magnet assembly and the arc track can be quantitatively adjusted by the motor according to the pressure value fed back by the pressure sensor.

[0013] Preferably, a through groove is provided on the bearing positioning block at a position between the two bearing limits, a protective bearing is provided in the through groove, and the protective bearing is fixedly connected to the slider through a bearing frame; when the slider slides, the support bearing rolls in contact with the top surface of the arc track, and a gap is formed between the protective bearing and the top surface of the arc track. Under normal conditions, the protective bearing does not contact the top surface of the arc track, and there is a gap of 0.3mm-2mm between the two. With long-term use, when the support bearing is severely worn or directly damaged and fails, the protective bearing contacts and supports the top surface of the arc track, and even if the support bearing is damaged during use, stable operation can be ensured.

[0014] Preferably, fine-tuning electromagnets that can magnetically attract the arc track are fixed at both ends of the bottom surface of the slider. The direction of the magnetic attraction generated by the fine-tuning electromagnet is consistent with the direction of gravity, and the fine-tuning electromagnet cooperates with the magnet assembly to adjust the force on the arc track; thereby, the movement mode of the swing chair is diversified to meet the physical needs of different users.

[0015] Preferably, vertical guide rods are fixed on both sides of the arc track on the slider, the lower end of the guide rod passes through the magnet positioning seat, a limit bearing is provided on the guide rod, the limit bearing is slidably connected to the guide rod, and compression springs are sleeved on both ends of the limit bearing on the guide rod. The limit bearing rolls and rubs against the side of the arc track, thereby limiting the two sides of the slider, ensuring that the slider can slide stably along the arc track to prevent lateral movement; the compression spring limits the limit bearing.

[0016] Preferably, a limit bearing is provided on the slide rod between the slider and the magnet positioning seat, and the circumferential surface of the limit bearing rolls and rubs against the side surface of the arc track. The limit bearing is directly provided on the slide rod, eliminating the need for an independent guide rod, making the overall structure more compact and reducing costs.

[0017] Preferably, the limit bearing is slidably connected to the slide bar, and compression springs are sleeved on both ends of the limit bearing on the slide bar. The limit bearing is limited up and down by two compression springs, which makes assembly more convenient.

[0018] Preferably, the chair support is provided with a driving mechanism for driving the slider to reciprocate along the arc track. When the driving mechanism is closed, a person sitting on the chair can swing back and forth by human power to achieve a swing motion; when the driving mechanism is turned on, the chair body can be automatically driven to swing by the driving mechanism.

[0019] Preferably, the driving mechanism comprises a coil mounting bracket and a plurality of electromagnetic coils. The top surface of the coil mounting bracket is an arc surface. The center of the circle corresponding to the top surface of the coil mounting bracket is concentric with the center of the circle corresponding to the arc track. The electromagnetic coils are fixedly arranged on the top surface of the arc bracket in sequence. At least two permanent magnets with vertical magnetic field distribution are fixed on the bottom surface of the bottom plate corresponding to the electromagnetic coils. The magnetic poles at the lower ends of the two adjacent permanent magnets are opposite. When the electromagnetic coil is energized, an electromagnet is formed. The permanent magnet is driven to move by changing the polarity of the electromagnet (changing the direction of the current to achieve the change of the magnetic pole of the electromagnet). This principle is consistent with the principle of the linear motor.

[0020] Preferably, a center of gravity adjustment mechanism is provided between the slider and the connecting seat. Since people have different weights and sitting postures, after a person sits on the chair body, the center of gravity (the center of gravity of the chair body and the person's weight) is automatically adjusted through the center of gravity adjustment mechanism, so that the swing movement of the slider is smoother and the experience is better.

[0021] Preferably, the center of gravity adjustment mechanism includes a support plate and a horizontal slide rail. The support plate can be raised and lowered above the slider. The top surface of the slider and the corresponding positions of the four corners of the support plate are provided with weighing sensors, and the support plate abuts against the weighing sensors. Sliding seats are fixed at both ends of the support plate. The horizontal slide rail is slidably connected to the sliding seat. The connecting seat is fixedly connected to the horizontal slide rail. A connecting seat horizontal driving mechanism is also provided on the slider. When a person sits on the chair body, the four weighing sensors detect the pressure. According to the difference, the connecting seat is driven to move horizontally through the connecting seat horizontal driving mechanism, thereby changing the center of gravity so that the position of the center of gravity is consistent with the lowest point of the arc track, and the chair body is more stable when swinging like a swing.

[0022] Preferably, the horizontal drive mechanism of the connecting seat includes a driving motor and a horizontal screw rod, wherein the driving motor is fixed at one end of the slider, the horizontal screw rod is parallel to the horizontal slide rail, one end of the horizontal screw rod is fixedly connected to the slider through a rotating seat, and the other end of the horizontal screw rod is fixedly connected to the shaft end of the driving motor, a driving block is fixed at the bottom of the connecting seat, and the horizontal screw rod passes through the driving block and is threadedly connected to the driving block. The driving motor drives the horizontal screw rod to rotate, thereby causing the driving block to move along the horizontal screw rod to change the position of the chair body, thereby achieving the adjustment of the center of gravity.

[0023] Preferably, a plurality of sliding pins are vertically fixed on the top surface of the slider, the upper ends of the sliding pins pass through the support plate and are slidably connected to the support plate, and locking nuts are provided on the upper ends of the sliding pins. The sliding pins limit the support plate so that the support plate can only be raised and lowered in the vertical direction, thereby increasing the detection stability of the weighing sensor.

[0024] Preferably, the arc track is made of ferromagnetic material, a weight-reducing cavity is provided in the arc track, and both ends of the arc track are fixedly connected to the chair support through connectors. The magnet assembly can directly generate magnetic attraction with the arc track, and the weight-reducing cavity reduces the weight of the arc track.

[0025] Therefore, the present invention has the beneficial effects of stable performance, small friction resistance, low noise, long service life and better experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 Schematic diagram of the connection between the chair bracket and the curved track.

[0028] Figure 3 for Figure 2 Front view of .

[0029] Figure 4 Schematic diagram of the connection between the slider and the curved track.

[0030] Figure 5 for Figure 4 Front view of .

[0031] Figure 6 Another implementation of the limit bearing.

[0032] Figure 7 for Figure 5 Schematic diagram without the slide bar and guide bar.

[0033] Figure 8 for Figure 4 Schematic diagram of the structure from another perspective.

[0034] Fig. 9 It is a connection diagram of the slider, magnet positioning seat and electric lifting mechanism.

[0035] Fig.10 for Fig. 9 A schematic diagram of the structure from another perspective.

[0036] Fig.11 It is a structural schematic diagram of the electric lifting mechanism.

[0037] Fig.12 It is a connection diagram of the slider, bearing assembly, and center of gravity adjustment mechanism.

[0038] Fig.13 for Fig.12 Axonometric drawing of .

[0039] Fig.14 for Fig.13 A schematic diagram of the structure from another perspective.

[0040] Fig.15 Schematic diagram of the connection between the support plate and the slider.

[0041] Fig.16 A schematic diagram of the structure of the bearing assembly.

[0042] Fig.17 A schematic structural diagram of the bearing assembly from another perspective.

[0043] Fig.18 Schematic diagram of the support status of the bearing assembly and the arc track.

[0044] In the figure: chair body 1, chair bracket 2, arc track 3, cylindrical weight reduction cavity 300, connector 4, slider 5, connector seat 6, bearing assembly 7, bearing positioning block 700, bearing limit cavity 701, bearing seat 702, support bearing 703, pressure sensor 704, through groove 705, protective bearing 706, bearing frame 707, magnet positioning seat 8, magnet assembly 9, flexible gasket 90, slide bar 10, bottom plate 11, electric lifting mechanism 12, motor 120, driving gear 121, driven gear 122, gear Limit seat 123, screw sleeve 124, vertical screw 125, fine-tuning electromagnet 126, guide rod 13, limit bearing 14, compression spring 15, drive mechanism 16, coil mounting bracket 160, electromagnetic coil 161, permanent magnet 162, center of gravity adjustment mechanism 17, support plate 170, horizontal slide rail 171, slide pin 172, locking nut 173, weighing sensor 174, sliding seat 175, connecting seat horizontal drive mechanism 18, drive motor 180, horizontal screw 181, rotating seat 182, drive block 183. DETAILED DESCRIPTION

[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0046] like Figure 1 , Figure 2 , Figure 3 and Figure 4 A magnetic swing chair structure shown in the figure comprises a chair body 1 and a chair bracket 2. Both sides of the upper end of the chair bracket 2 are provided with arc tracks 3, the arc tracks 3 are made of ferromagnetic material, a weight reduction cavity 300 is provided in the arc tracks 3, and both ends of the arc tracks 3 are fixedly connected to the chair bracket through connectors 4;

[0047] The top surface of the arc track 3 is provided with a slider 5, and the slider is provided with a connecting seat 6 for connecting with the bottom of the chair body. The front and rear ends of the slider 5 are provided with bearing assemblies 7 for rolling friction with the arc track. The lower side of the arc track 3 is provided with a magnet positioning seat 8 that moves synchronously with the slider. The magnet positioning seat 8 is provided with at least a magnet assembly 9 that can magnetically attract the arc track. The magnet assembly is a permanent magnet or an electromagnet.

[0048] like Figure 5 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, there are two magnet assemblies 9 in this embodiment, and the two magnet assemblies 9 are fixed at both ends of the top surface of the magnet positioning seat 8. The magnet assembly 9 is a permanent magnet, and the permanent magnet is a neodymium iron boron permanent magnet. The top surface of the magnet assembly is an inclined surface, and the midpoint of the top surface of the magnet assembly passes through the center of the circle corresponding to the arc track. A flexible gasket 90 is fixed to the top surface of the magnet assembly; a plurality of vertical slide bars 10 are fixed to the lower end of the slider 5, and the magnet positioning seat 8 is slidably connected to the slide bar, and a bottom plate 11 is fixed to the lower end of the slide bar 10. The magnet positioning seat is also provided with an electric lifting mechanism 12 for driving the magnet positioning seat to rise and fall, and the electric lifting mechanism 12 includes a motor 120, a driving gear 121, and a driven gear 122, the motor is fixed on the magnet positioning seat 8, the driving gear 121 is fixed to the shaft end of the motor 120, the driven gear 122 is distributed on both sides of the driving gear 121 and is meshed with the driving gear, and a gear limit seat 123 is provided on the magnet positioning seat 8 on the outside of the driven gear, a screw sleeve 124 is fixed at the axis of the driven gear 122, the screw sleeve passes through the gear limit seat, and a vertical screw 125 is provided in the screw sleeve 124, the upper end of the vertical screw 125 is fixedly connected to the slider 5, and the lower end of the vertical screw passes through the screw sleeve; fine-tuning electromagnets 126 that can magnetically attract the arc track are also fixed at both ends of the bottom surface of the slider 5, and a gap is provided between the fine-tuning electromagnet and the arc track.

[0049] like Figure 5As shown, vertical guide rods 13 are fixed on both sides of the arc track on the slider 5, the lower end of the guide rod passes through the magnet positioning seat 8, and a limit bearing 14 is provided on the guide rod. The limit bearing 14 is slidably connected to the guide rod. Compression springs 15 are sleeved on both ends of the limit bearing on the guide rod 13, and a gap of 0.3mm-1mm is provided between the limit bearing and the side of the arc track. The limit bearing 14 can also be used Figure 6 In the installation method shown, a limit bearing 14 is provided on the slide bar 10 between the slider and the magnet positioning seat, and the circumferential surface of the limit bearing 14 rolls and rubs against the side surface of the arc track; the limit bearing 14 is slidably connected to the slide bar, and compression springs 15 are sleeved on both ends of the limit bearing on the slide bar. The installation method of the limit bearing 14 is not limited to the above two embodiments, and the limit bearing can also be directly fixedly connected to the slide bar or the guide rod.

[0050] like Figure 2 and Figure 3 As shown, the chair support 2 is provided with a driving mechanism 16 for driving the slider to reciprocate along the arc track. The driving mechanism 16 includes a coil mounting bracket 160 and a plurality of electromagnetic coils 161. The top surface of the coil mounting bracket 160 is an arc surface. The center of a circle corresponding to the top surface of the coil mounting bracket 160 is concentric with the center of a circle corresponding to the arc track. The electromagnetic coils 161 are fixedly arranged on the top surface of the arc support in sequence. At least two permanent magnets 162 with vertically distributed magnetic fields are fixed on the bottom surface of the base plate 11 at positions corresponding to the electromagnetic coils 161. The magnetic poles at the lower ends of two adjacent permanent magnets are opposite. There are three permanent magnets 162 in this embodiment. In order to enhance the magnetism of the electromagnetic coil, an iron core can be arranged in the electromagnetic coil as needed. The principle of the driving mechanism is the same as that of a linear motor, that is, by changing the direction of the current in the electromagnetic coil, the magnetic field of the electromagnetic coil changes to drive the permanent magnet to move horizontally (arc-shaped movement in this application).

[0051] like Fig.12 , Fig.13 , Fig.14 , Fig.15As shown, a gravity center adjustment mechanism 17 is provided between the slider 5 and the connecting seat 6, and the gravity center adjustment mechanism 17 includes a support plate 170 and a horizontal slide rail 171. The support plate 170 is arranged above the slider in a manner that it can be raised or lowered. A plurality of sliding pins 172 are vertically fixed to the top surface of the slider 5. The upper ends of the sliding pins pass through the support plate and are slidably connected to the support plate. Locking nuts 173 are provided at the upper ends of the sliding pins. Weighing sensors 174 are provided at the corresponding positions of the top surface of the slider 5 and the four corners of the support plate, and the support plate 170 abuts against the weighing sensors. Sliding seats 175 are fixed to both ends of the support plate 170, and the horizontal slide rail 171 is connected to the sliding seat 1 75 sliding connection, the connecting seat 6 is fixedly connected with the horizontal slide rail 171, and the slider 5 is also provided with a connecting seat horizontal driving mechanism 18, the connecting seat horizontal driving mechanism 18 includes a driving motor 180 and a horizontal screw 181, the driving motor 180 is fixed at one end of the slider, the horizontal screw 181 is distributed parallel to the horizontal slide rail, one end of the horizontal screw 181 is fixedly connected with the slider through a rotating seat 182, and the other end of the horizontal screw 181 is fixedly connected with the shaft end of the driving motor 180 through a coupling, a driving block 183 is fixed at the bottom of the connecting seat 6, and the horizontal screw passes through the driving block and is threadedly connected with the driving block.

[0052] like Fig.14 , Fig.16 , Fig.17 and Fig.18 As shown, there are two groups of bearing assemblies 7, and the two groups of bearing assemblies 7 are respectively fixed at the two ends of the slider. The bearing assembly 7 includes a bearing positioning block 700, and both ends of the bearing positioning block 700 are provided with a bearing limiting cavity 701. Each bearing limiting cavity is provided with a bearing seat 702 and a support bearing 703 rotatably connected to the bearing seat. The bearing seat 702 is slidably connected to the bearing limiting cavity 701, and the bearing positioning block 700 is fixedly connected to the bottom of the slider.

[0053] A pressure sensor 704 is provided between the upper end of the bearing seat 702 and the bottom surface of the slider; a through groove 705 is provided at a position between the two bearing limiters on the bearing positioning block 700, and a protective bearing 706 is provided in the through groove, and the protective bearing is fixedly connected to the slider through a bearing frame 707; when the slider slides, the supporting bearing 703 is in rolling contact with the top surface of the arc track 3, and a gap is formed between the protective bearing 706 and the top surface of the arc track, and the gap is 0.3mm-2mm.

[0054] Combined with the attached drawings, this kind of swing chair has multiple usage states:

[0055] The first state is the normal chair use state, which is also the initial state of the swing chair, that is, the chair body is in the limited position state (non-swinging state). At this time, the motor 120 drives the magnet assembly 9 to rise until the magnet assembly and the bottom surface of the arc track 3 are completely adsorbed (the arc track and the magnet assembly are isolated by the flexible gasket 90). At this time, the slider is completely positioned and cannot slide, and can be used as an ordinary normal chair;

[0056] The second state is that the chair body is pushed by manpower to swing like a swing: at this time, the driving mechanism 16 does not work, that is, the electromagnetic coil is not energized. In the initial state, the magnet assembly 9 is attracted and positioned with the arc track 3. In the initial state, the support bearing and the top surface of the arc track are in contact and are not under force (because the magnet assembly is attracted to the arc track, the attraction is very large. At this time, the flexible gasket is compressed and produces a slight deformation. This slight deformation makes the slider as a whole tend to move upward, and a slight gap is generated between the support bearing and the arc track. It looks like contact to the naked eye, but in fact the support bearing is not under force). A person sits on the chair body 1, and after the four weighing sensors detect the gravity respectively, the chair body is moved by the driving motor 180 and the horizontal screw 181 to adjust the center of gravity, and the chair body is moved. The center of gravity of the human body is adjusted to correspond to the lowest point of the arc track, and then the motor 120 drives the magnet assembly 9 to gradually descend. During the descent of the magnet assembly, the value of the pressure sensor gradually increases. When the value of the pressure sensor reaches the set value, the magnet assembly stops descending (that is, the motor stops rotating). The user can set the mode on the control panel of the swing chair, that is, set the value of the pressure sensor to meet different body sensor needs. The set value range of the pressure sensor is 5%-10% of the weighing sensor value; when the swing chair swings, the friction between the support bearing and the arc track is significantly reduced. By exerting force on the feet, the chair body moves back and forth along the arc track with the slider to do a pendulum motion (that is, swing motion). The chair body can swing freely for a long time, with a good leisure effect and a very good experience.

[0057] The third state is the automatic swing state: in the second state, the driving mechanism 16 works, that is, the electromagnetic coil is energized, and each electromagnetic coil generates an alternating magnetic field, thereby driving the permanent magnet 162 to reciprocate, and then driving the slider to swing back and forth along the arc track. The principle of the electromagnetic coil connected to the alternating current to drive the permanent magnet to move is the same as the principle of the linear motor, which will not be elaborated here. The human body reciprocates with the chair body, and the swing speed can be changed by changing the current of the electromagnetic coil. Since the arc track is arc-shaped, the slider is overweight during the swing process. During the entire swing process, the pressure on the arc track changes. When it swings to the lowest point of the arc track, the pressure on the arc track is the largest. When it swings to both ends of the arc track, the pressure on the arc track will decrease. This causes uneven force on the support bearing 703 during the entire process and it is easy to be damaged. In this structure, the pressure difference can be weakened or compensated by fine-tuning the electromagnet 126, that is, when the slider moves from the lowest point of the arc track to the lowest point of the arc track, the pressure on the arc track will decrease. When the point moves toward both ends, the current in the fine-tuning electromagnet 126 increases synchronously, and the magnetic attraction between the fine-tuning electromagnet and the arc track compensates for the change (reduction) in the pressure on the arc track, so that during the entire swinging process, the pressure difference of the support bearing on the arc track is reduced or tends to be consistent, thereby improving the stability of the support bearing 703 and extending its service life. Especially when the swing chair swings quickly and greatly, the difference between the support bearing at different positions is large, and the effect of the fine-tuning electromagnet is more obvious; and the micro-carving electromagnet can ensure that the support bearing will not separate from the arc track when the chair body swings to the highest point.

[0058] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A magnetic swing chair structure, comprising a chair body and a chair bracket, characterized in that: The upper end of the chair support is provided with arc tracks on both sides, the top surface of the arc track is provided with a slider, the slider is provided with a connecting seat for connecting with the bottom of the chair body, the slider is provided with a bearing assembly for rolling friction with the arc track, the lower side of the arc track is provided with a magnet positioning seat that moves synchronously with the slider, and the magnet positioning seat is provided with at least one magnet assembly that can magnetically attract the arc track; A gravity center adjustment mechanism is provided between the slider and the connecting seat; the gravity center adjustment mechanism comprises a support plate and a horizontal slide rail, the support plate is arranged above the slider in a liftable manner, and weighing sensors are provided at the corresponding positions of the top surface of the slider and the four corners of the support plate, and the support plate abuts against the weighing sensors; sliding seats are fixed at both ends of the support plate, the horizontal slide rail is slidably connected to the sliding seat, the connecting seat is fixedly connected to the horizontal slide rail, and a connecting seat horizontal driving mechanism is also provided on the slider; The horizontal driving mechanism of the connecting seat includes a driving motor and a horizontal screw. The driving motor is fixed to one end of the slider. The horizontal screw is distributed parallel to the horizontal slide rail. One end of the horizontal screw is fixedly connected to the slider through a rotating seat. The other end of the horizontal screw is fixedly connected to the shaft end of the driving motor. A driving block is fixed to the bottom of the connecting seat. The horizontal screw passes through the driving block and is threadedly connected to the driving block. The top surface of the magnet assembly is an inclined surface, and the perpendicular bisector of the top surface of the magnet assembly passes through the center of a circle corresponding to the arc track.

2. The magnetic swing chair structure according to claim 1 is characterized in that: A plurality of vertical slide bars are fixed to the lower end of the slide block, the magnet positioning seat is slidably connected to the slide bars, a bottom plate is fixed to the lower end of the slide bars, and an electric lifting mechanism for driving the magnet positioning seat to rise and fall is also provided on the magnet positioning seat.

3. The magnetic swing chair structure according to claim 2 is characterized in that: The electric lifting mechanism includes a motor, a driving gear, and a driven gear. The motor is fixed on a magnet positioning seat, the driving gear is fixed to the shaft end of the motor, the driven gears are distributed on both sides of the driving gear and are meshed with the driving gear, a gear limit seat is provided on the magnet positioning seat and located on the outside of the driven gear, a screw sleeve is fixed at the axis of the driven gear, the screw sleeve passes through the gear limit seat, a vertical screw is provided in the screw sleeve, and the upper end of the vertical screw is fixedly connected to the slider.

4. The magnetic swing chair structure according to claim 3 is characterized in that: There are two magnet assemblies, which are fixed at two ends of the top surface of the magnet positioning seat. The magnet assemblies are permanent magnets or electromagnets.

5. The magnetic swing chair structure according to claim 1 is characterized in that: A flexible gasket is fixed on the top surface of the magnet assembly.

6. A magnetic swing chair structure according to claim 1 or 2 or 3 or 4 or 5, characterized in that: There are two groups of bearing assemblies, which are respectively fixed at the two ends of the slider. The bearing assemblies include bearing positioning blocks, both ends of which are provided with bearing limit cavities, each bearing limit cavity is provided with a bearing seat and a supporting bearing rotatably connected to the bearing seat, the bearing seat is slidably connected to the bearing limit cavity, and a pressure sensor is provided between the upper end of the bearing seat and the bottom surface of the slider.

7. The magnetic swing chair structure according to claim 6 is characterized in that: A through groove is provided on the bearing positioning block at a position between the two bearing limiters, and a protective bearing is provided in the through groove. The protective bearing is fixedly connected to the slider through a bearing frame; when the slider slides, the supporting bearing rolls in contact with the top surface of the arc track, and a gap is formed between the protective bearing and the top surface of the arc track.

8. The magnetic swing chair structure according to claim 6 is characterized in that: Fine-tuning electromagnets capable of magnetically attracting the arc track are also fixed at both ends of the bottom surface of the sliding block.

9. The magnetic swing chair structure according to claim 2 is characterized in that: Vertical guide rods are fixed on both sides of the arc track on the slider, the lower ends of the guide rods pass through the magnet positioning seat, and the guide rods are provided with limit bearings, which are slidably connected to the guide rods, and compression springs are sleeved on both ends of the limit bearings on the guide rods.

10. The magnetic swing chair structure according to claim 2 is characterized in that: A position limiting bearing is provided on the slide rod between the slide block and the magnet positioning seat, and the circumferential surface of the position limiting bearing rolls and rubs against the side surface of the arc track.

11. The magnetic swing chair structure according to claim 10, characterized in that: The limit bearing is slidably connected to the slide bar, and compression springs are sleeved on both ends of the limit bearing on the slide bar.

12. The magnetic swing chair structure according to claim 2, characterized in that: The chair support is provided with a driving mechanism for driving the sliding block to reciprocate along the arc track.

13. The magnetic swing chair structure according to claim 12, characterized in that: The driving mechanism includes a coil mounting bracket and a plurality of electromagnetic coils. The top surface of the coil mounting bracket is an arc surface. The center of a circle corresponding to the top surface of the coil mounting bracket is concentric with the center of a circle corresponding to the arc track. The electromagnetic coils are fixedly arranged in sequence on the top surface of the arc bracket. At least two permanent magnets with vertically distributed magnetic fields are fixed on the bottom surface of the base plate at positions corresponding to the electromagnetic coils, and the magnetic poles at the lower ends of the two adjacent permanent magnets are opposite.

14. The magnetic swing chair structure according to claim 1, characterized in that: A plurality of sliding pins are vertically fixed on the top surface of the sliding block, the upper ends of the sliding pins pass through the supporting plate and are slidably connected to the supporting plate, and the upper ends of the sliding pins are provided with locking nuts.

15. The magnetic swing chair structure according to claim 1, characterized in that: The arc track is made of ferromagnetic material, a weight-reducing cavity is arranged inside the arc track, and two ends of the arc track are fixedly connected to the chair support through connecting pieces.

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