Rocking mechanism and control method

Abstract

A rocking mechanism and a control method. The rocking mechanism comprises a base (10), a rocking frame (20), and rocking arms (40) arranged between the base (10) and the rocking frame (20), wherein, by means of the rocking arms (40), the rocking frame (20) can rock forwards or backwards relative to the base (10); and one end of each rocking arm (40) is hinged to the rocking frame (20), and the other end thereof is hinged to the base (10). The diameter of a driving roller (332) is less than the diameter of a driven roller (341). The present application uses a worm wheel (331) and a worm (311) as the means for driving-shaft input transmission, and uses the driving roller (332), the driven roller (341) and a transmission belt (36) as the means for belt transmission so as to drive a linkage member to drive the rocking frame (20) to rock forwards and backwards relative to the base (10).

Description

A swing mechanism and control method Technical Field

[0001] The present invention relates to the technical field of massage chairs, and in particular to a rocking mechanism. Background Art

[0002] The massage chair uses mechanical rolling force and squeezing force to massage the human body sitting or lying on the support frame.

[0003] The massage chair with application number CN201721250369.3 in the related technology is a massage chair with easy angle adjustment, comprising a base and a chair body, wherein the base is composed of a plurality of transverse connecting rods and longitudinal connecting rods staggered front and back, the two longitudinal connecting rods being installed on the inner sides of the two transverse connecting rods, wherein the longitudinal connecting rod at the front end is connected to the motor through a clamping block, the motor is connected to the mounting block through a mounting shaft, the mounting block is installed at the bottom of the mounting frame, the mounting frame is arranged between the two fixed frames, and the two fixed frames are both installed on the inner sides of the transverse connecting rods, the mounting frame is provided with a plurality of support blocks, wherein the two outer support blocks are installed on the fixed rod through an adjusting rod, and the fixed rod is installed on the chair body through a connecting block, conveying rails are provided on both sides of the chair body, and a massage device is installed on the conveying rails, a swinging frame is provided at the bottom of the chair body, a fixed block is provided, a push rod is installed on the fixed block through a connecting shaft, an adjusting wheel is provided at the bottom of the push rod, a cylinder is provided on the push rod, and a motor is installed at the tail of the cylinder; the cylinder drives the push rod to swing.

[0004] The above application uses a cylinder as the driving source for driving the swing frame to swing forward and backward. This causes the swing frame to swing at a frequency that is too fast when switching back and forth between the two swinging states. As a result, users sitting or lying on the support frame (i.e., the chair body mentioned above) will feel a noticeable pause, that is, the swinging motion is not smooth and fluid, which is not conducive to slowing down the user's breathing rate and has no effect of helping sleep.

[0005] Therefore, the present application designs a rocking mechanism to address one or more of the above problems. Technical Solutions

[0006] The present invention provides a swing mechanism, which can effectively solve the above problems.

[0007] The present invention is achieved in that:

[0008] A swing mechanism includes a base, a swing frame, and a swing arm disposed between the base and the swing frame, wherein the swing frame can swing forward or backward relative to the base via the swing arm;

[0009] One end of the swing arm is hinged to the swing frame, and the other end is hinged to the base; the swing mechanism also includes a control component, which includes a control motor and a universal structure, and the control component also includes:

[0010] A control gear box is mounted on a swing frame or base. A driving shaft and a driven shaft are rotatably connected in the control gear box. A worm gear is mounted axially on the driving shaft. A worm for driving the worm gear is mounted on the output shaft of the control motor. A driving roller is also mounted axially on the driving shaft. A driven roller is mounted on the driven shaft and is in the same longitudinal position as the driving roller. A transmission belt is sleeved between the driving roller and the driven roller.

[0011] A linkage member, one end of which is a swing frame end fixedly connected to the driven shaft, and the other end is a base end rotatably connected to the base through a universal structure;

[0012] The diameter of the active roller is smaller than that of the driven roller.

[0013] The present invention also provides a method for controlling a swing mechanism, comprising the following steps:

[0014] S1: Start the control motor. The output shaft of the control motor drives the worm to rotate. The worm drives the worm wheel to rotate. At the same time, the active shaft and the active roller rotate synchronously. Under the action of the transmission belt, the driven roller drives the driven shaft to rotate, so that the linkage can rotate clockwise with the swing frame end as the rotation point.

[0015] S2: When the base end of the linkage rotates to the highest point or the lowest point, the swing arm drives the swing frame to swing forward relative to the base;

[0016] S3: When the base end of the linkage rotates to the same horizontal position as the swing arm end, the swing arm drives the swing frame to swing backward relative to the base;

[0017] S4: In S2 and S3, the control motor can control the rotation frequency of the linkage member to be 6-25 times per minute. The user sitting or lying on the support frame can adjust the frequency according to his or her own breathing rate, thereby achieving the effect of slowing down the user's breathing rate and helping sleep. Beneficial effects

[0018] The beneficial effects of the present invention are:

[0019] The present application adopts a worm gear as the active shaft input transmission method, which can make the swinging movement of the swing frame relative to the base more labor-saving and smooth, and drives the linkage parts to drive the swing frame to swing forward and backward relative to the base through the active roller, the driven roller and the transmission belt as a belt transmission method, which can play a buffering role and reduce the possibility of the worm gear being subjected to additional impact and wear during the swinging movement. The swing frequency of the swing mechanism can be stabilized at a frequency of 6-25 times per minute, which can adapt well to the user's breathing frequency, allowing the user to slow down breathing and help sleep. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] FIG1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] FIG2 is an enlarged schematic diagram of point A in FIG1 according to an embodiment of the present invention;

[0023] FIG3 is an exploded schematic diagram of a base and a swing frame according to an embodiment of the present invention;

[0024] FIG4 is an exploded schematic diagram illustrating the assembly process of a control assembly according to an embodiment of the present invention;

[0025] FIG5 is a cross-sectional schematic diagram showing a movable gap according to an embodiment of the present invention;

[0026] FIG6 is a schematic structural diagram provided by an embodiment of the present invention.

[0027] The accompanying drawings are marked as follows:

[0028] 10. Base; 11. Articulated seat; 111. Articulated slot;

[0029] 20. Swing stand; 21. Support frame; 22. Speaker; 23. Cardiopulmonary function tester; 24. Controller;

[0030] 30. Control assembly; 31. Control motor; 311. Worm; 32. Control gear box;

[0031] 33. Driving shaft; 331. Worm gear; 332. Driving roller;

[0032] 34, driven shaft; 341, driven roller; 3411, boss end; 3412, external threaded column;

[0033] 35. Linkage; 351. Swing frame end; 352. Base end; 353. Swing frame block; 3531. Boss hole; 354. Base block; 355. Reinforcement rib;

[0034] 36. Transmission belt; 361. Speed ​​reduction strip;

[0035] 40. Swing arm;

[0036] 50. Speed ​​reduction trough;

[0037] 60. Universal joint; 61. First mounting seat; 62. Second mounting seat; 63. Movable end of ball joint; 64. Movable end of shaft joint. Modes for Carrying Out the Invention

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0040] As shown in FIG1 , a rocking mechanism includes a base 10 , a rocking frame 20 , and a rocking arm 40 for connecting the base 10 and the rocking frame 20 . A support frame 21 for a user to sit or lie on is provided on the rocking frame 20 .

[0041] As shown in Figures 1, 2, and 3, in this embodiment, there are four swing arms 40, each grouped in pairs. Each group of swing arms 40 is located on either side of the swing frame 20. The upper ends of the swing arms 40 are hinged to the base 10, and the opposite ends are hinged to the swing frame 20. Driving the hinged ends of the swing arms 40 to rotate relative to the base 10 enables the swing frame 20 to swing forward or backward relative to the base 10.

[0042] As shown in Figures 2, 3 and 4, the swing mechanism also includes a control component 30, which includes a control motor 31 and a control gear box 32 installed on the swing frame 20. The control component 30 also includes a linkage 35; a driving shaft 33 and a driven shaft 34 are rotatably connected in the control gear box 32, and one end of the linkage 35 has a swing frame end 351 for being fixedly connected to the driven shaft 34, and the end of the linkage 35 opposite to the swing frame end 351 has a base end 352 for rotating with the base 10.

[0043] As shown in Figures 3 and 4, a worm gear 331 is mounted axially on the driving shaft 33, and a worm 311 is mounted on the output shaft of the control motor 31 to drive the worm gear 331. A driving roller 332 is mounted axially on the driving shaft 33, spaced apart from the worm gear 331. The diameter of the driving roller 332 is smaller than that of the driven roller 341. The driving roller 332 is fixed to the circumference of the driving shaft 33 by screws. In contrast, a driven roller 341 is mounted axially on the driven shaft 34. The driven roller 341 is mounted on the driven shaft 34 in the same longitudinal direction as the driving roller 332. A transmission belt 36 is interposed between the driving roller 332 and the driven roller 341.

[0044] Start the control motor 31, and the output shaft of the control motor 31 drives the worm 311 to rotate. At the same time, the worm 311 drives the active roller 332 on the active shaft 33 to rotate by driving the worm wheel 331 to rotate. Due to the setting of the transmission belt 36, the transmission belt 36 can synchronously drive the driven roller 341 to drive the driven shaft 34 to rotate. At this point, the swing frame end 351 of the linkage 35 is controlled by the driven shaft 34 and rotates, and then the base end 352 of the linkage 35 rotates to realize the forward or backward swinging movement of the swing frame 20 relative to the base 10.

[0045] It should be noted here that the use of the worm gear 331 and the worm 311 as a means of driving the active shaft 33 to rotate can steadily reduce the swing frequency of the swing mechanism, and compared with the gear mechanism, the worm gear 331 and the worm 311 also have a compact structural rigor, which can effectively reduce the space and mass occupied by the control gear box 32, making the swinging action of the swing frame 20 relative to the base 10 more labor-saving and smooth.

[0046] Furthermore, an active roller 332, a driven roller 341 and a transmission belt 36 are used as a method of driving the driven roller 341 to drive the linkage part 35 to rotate. When the swing frame 20 swings back and forth, the transmission belt 36 can play a buffering role and can avoid a hard collision between the worm wheel 331 and the worm 311 during operation, thereby reducing the possibility of additional wear between the two due to the swing of the swing frame 20 and improving the service life of the components.

[0047] Therefore, under the coordinated action of the worm wheel 331, the worm 311 and the transmission belt 36, the swing frequency of the swing mechanism can be stabilized at a frequency of 6-25 times per minute, which can well adapt to the user's breathing frequency, helping the user to slow down breathing and help sleep.

[0048] As shown in Figures 3 and 5 , a hinged seat 11 is fixedly attached to the lower edge of the upper end of the base 10. This hinged seat 11 has a downwardly opening hinge slot 111. One end of the swing arm 40 extends into the hinge slot 111, and the other end is hingedly connected to the swing frame 20. A rotating shaft (not shown) is mounted between the two opposing walls of the hinge slot 111. Both ends of the rotating shaft are mounted to the hinged seat 11 via nuts (not shown).

[0049] It's worth noting that the swing frame 20 achieves forward and backward swinging motion relative to the base 10 by rotating the four swing arms 40. During assembly, since the base 10 and swing arms 40 are welded together, the mounting positions of the various components may deviate from their pre-set positions, potentially causing the swing arms 40 to deviate from their pre-set mounting positions.

[0050] As shown in Figures 3 and 4, in order to solve the above problem, a universal structure 60 is provided on the base 10. The universal structure 60 includes a first mounting seat 61, a second mounting seat 62, a ball joint movable end 63, and a shaft joint movable end 64. The first mounting seat 61 is fixed to the side of the base 10 close to the control gear box 32 by screw locking. The ball joint movable end 63 is provided between the first mounting seat 61 and the second mounting seat 62. The shaft joint movable end 64 is provided at the end of the second mounting seat 62 away from the ball joint movable end 63. The shaft joint movable end 64 is rotatably engaged with the second mounting seat 62 via an axis. The shaft joint movable end 64 is provided with a bearing for rotatably connecting to the base end 352 of the linkage member 35, thereby enabling the shaft joint movable end 64 to move to the left or right within a small range relative to the base 10.

[0051] When installing the rocking arm 40, first hinge one end of the rocking arm 40 to the rocking frame 20, and then assemble the other end of the rocking arm 40 into the hinge groove 111. Due to the setting of the ball joint movable end 63 and the shaft joint movable end 64, the rocking arm 40 can be adjusted to a preset installation position to eliminate the assembly error between the base 10 and the rocking arm 40, reduce the installation accuracy requirements of the rocking mechanism, and also protect the entire mechanism from damage.

[0052] As shown in Figure 4 , a boss 3411 is formed on the end of the driven shaft 34 near the swing arm end 351 of the linkage member 35. The end of the boss 3411, away from the driven shaft 34, has an externally threaded post 3412, which is threadedly engaged with a nut (not shown). The boss 3411 tapers from the driven shaft 34 toward the linkage member 35. The swing arm end 351 of the linkage member 35 has a boss hole 3531 that mates with the boss 3411.

[0053] When assembling the linkage part 35, the boss end 3411 is inserted into the boss hole 3531, and the wall of the boss hole 3531 fits against the outer wall of the boss. Then, the nut is tightened so that one side of the linkage part 35 is tightly pressed against the end face of the driven shaft 34 close to the boss end 3411, and the other side of the linkage part 35 is tightly pressed against the nut. At this time, the end face of the boss end 3411 away from the driven shaft 34 is flush with the outer surface of the linkage part 35, and the assembly connection between the linkage part 35 and the driven shaft 34 is completed. In this process, there is a mutual guiding effect between the wall of the boss hole 3531 and the outer wall of the boss, which can facilitate the assembly of the two. Moreover, since the boss end 3411 is tapered, the gap between the wall of the boss hole 3531 and the outer wall of the boss end 3411 can also be effectively reduced, thereby improving the stability of the assembly of the linkage part 35.

[0054] As shown in Figure 4, the swing frame end 351 of the linkage member 35 protrudes from the surface of the linkage member 35 toward one end of the driven shaft 34 and forms a swing frame block 353. The base end 352 of the linkage member 35 protrudes from the surface of the linkage member 35 toward one end of the universal structure 60 and forms a base block 354. The lateral width of the base block 354 is greater than the lateral width of the swing frame block 353. Therefore, the mass of the base block 354 is also greater than the mass of the swing frame block 353. When the linkage member 35 drives the swing frame 20 to swing relative to the base 10, the base block 354 is subjected to a greater inertial centrifugal force, which makes it easier to drive the swing frame 20 to swing relative to the base 10, making the swing process of the swing frame 20 smoother.

[0055] As shown in Figure 4, two reinforcing ribs 355 are provided between the linkage part 35 and the base block 354. One side of each reinforcing rib 355 is fixedly connected to the linkage part 35 and the other side is fixedly connected to the base block 354, and an angle a is formed between the extension lines of the two reinforcing ribs 355. In this embodiment, the angle a is 45-75°, and the preferred angle a is 60°. Using the above parameters to process the reinforcing ribs 355 can effectively improve the structural strength between the linkage part 35 and the base block 354, and improve the service life of the rocking mechanism.

[0056] As shown in Figures 4 and 6, the active roller 332 has several evenly spaced reduction grooves 50 along its axial direction. The longitudinal cross-section of the reduction grooves 50 is an inverted triangle structure from the outside to the inside. The driven roller 341 also has several evenly spaced reduction grooves 50 along its axial direction. The number of reduction grooves 50 on the driven roller 341 is the same as the number of reduction grooves 50 on the active roller 332. The inner wall surface of the transmission belt 36 has several reduction strips 361 that are compatible with the reduction grooves 50. The reduction strips 361 are enclosed to form a closed structure, and the number of reduction strips 361 on the transmission belt 36 is the same as the number of reduction grooves 50. It should be noted that the transmission belt 36 and the reduction strips 361 are both rubber products with elastic deformation capabilities.

[0057] When the transmission belt 36 is sleeved between the active roller 332 and the driven roller 341, the deceleration bar 361 is also synchronously engaged in the deceleration groove 50. Under the same conditions, the contact area between the transmission belt 36 and the active roller 332 or the driven roller 341 is increased, thereby increasing the friction between the transmission belt 36 and the active roller 332 or the driven roller 341, further improving the buffering performance of the transmission belt 36, and making the swing mechanism run more smoothly and stably.

[0058] As shown in Figures 1 and 3, the swing mechanism also includes a controller 24, a wireless transmission module (not shown in the figures), and a speaker 22 electrically connected to the controller 24. The control motor 31 is electrically connected to the controller 24. The controller 24 receives music information from the speaker 22 through the wireless transmission module and outputs the processed signal to the control motor 31, so that the music information is output in the form of a speed control motor 31.

[0059] As shown in Figures 1 and 3, the swing mechanism also includes a cardiopulmonary function detector 23 electrically connected to the controller 24. The cardiopulmonary function detector 23 is used to detect the respiratory rate information of a human body sitting or lying on the support frame 21. The controller 24 receives the human respiratory rate information detected by the cardiopulmonary function detector 23 through a wireless transmission module and outputs the processed signal to the control motor 31, so that the human respiratory rate information is output in the form of a speed control motor 31.

[0060] A method for controlling a swing mechanism comprises the following steps:

[0061] S1: Start the control motor 31. The output shaft of the control motor 31 drives the worm 311 to rotate. The worm 311 drives the worm wheel 331 to rotate. At the same time, the driving shaft 33 and the driving roller 332 rotate synchronously. Under the action of the transmission belt 36, the driven roller 341 drives the control driven shaft 34 to rotate, so that the linkage member 35 can rotate clockwise with the swing frame end 351 as the rotation point.

[0062] S2: When the base end 352 of the linkage member 35 rotates to the highest point or the lowest point, the swing arm 40 drives the swing frame 20 to swing forward relative to the base 10;

[0063] S3: When the base end 352 of the linkage member 35 rotates to the same horizontal position as the swing arm end, the swing arm 40 drives the swing frame 20 to swing backward relative to the base 10;

[0064] S4: In S2 and S3, the control motor 31 can control the rotation frequency of the linkage member 35 to be 6-25 times per minute. The user sitting or lying on the support frame 21 can adjust the frequency according to his or her own breathing rate, thereby achieving the effect of slowing down the user's breathing rate and helping sleep.

[0065] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A swing mechanism, comprising a base (10), a swing frame (20), and a swing arm (40) arranged between the base (10) and the swing frame (20), wherein the swing frame (20) can swing forward or backward relative to the base (10) by means of the swing arm (40); Features: One end of the swing arm (40) is hinged to the swing frame (20), and the other end is hinged to the base (10); the swing mechanism further includes a control component (30), the control component (30) includes a control motor (31) and a universal structure (60), and the control component (30) further includes: A control gear box (32), the control gear box (32) being mounted on a swing frame (20) or a base (10), a driving shaft (33) and a driven shaft (34) being rotatably connected in the control gear box (32), a worm gear (331) being axially mounted on the driving shaft (33), and a worm (311) for driving the worm gear (331) to rotate being mounted on the output shaft of the control motor (31); a driving roller (332) being axially mounted on the driving shaft (33), a driven roller (341) being located at the same longitudinal position as the driving roller (332) being mounted on the driven shaft (34), and a transmission belt (36) being sleeved between the driving roller (332) and the driven roller (341); A linkage member (35), one end of the linkage member (35) being a swing frame end (351) fixedly connected to the driven shaft (34), and the other end being a base end (352) rotatably connected to the base (10) via a universal structure (60); The diameter of the active roller (332) is smaller than the diameter of the driven roller (341).

2. A swing mechanism according to claim 1, characterized in that: The universal structure (60) is arranged on the base (10), and comprises a first mounting seat (61), a second mounting seat (62), a ball joint movable end (63) arranged between the first mounting seat (61) and the second mounting seat (62), and a shaft joint movable end (64). The first mounting seat (61) is mounted on the side of the base (10) facing the control gear box (32), and the shaft joint movable end (64) is rotationally matched with the base end (352) of the linkage member (35); the shaft joint movable end (64) is rotationally matched with the second mounting seat (62) via an axis, which is away from the ball joint movable end (63).

3. A swing mechanism according to claim 1, characterized in that: The driven shaft (34) is formed with a boss end (3411) at one end facing the linkage member (35), the boss end (3411) is gradually contracted from the driven shaft (34) toward the linkage member (35), and the swing frame end (351) of the linkage member (35) has a boss hole (3531) adapted to the boss end (3411).

4. A swing mechanism according to claim 3, characterized in that: The boss end (3411) is provided with an external thread column (3412) at one end away from the driven shaft (34), and a nut for tightening the swing frame end (351) of the linkage member (35) against the end surface of the driven shaft (34) is threadedly connected to the peripheral side of the external thread column (3412).

5. A swing mechanism according to claim 1, characterized in that: A swing frame block (353) is formed on a protruding surface of a swing frame end (351) of the linkage member (35) facing the driven shaft (34), and a base block (354) is formed on a protruding surface of a base end (352) of the linkage member (35) away from the swing frame block (353), wherein the lateral width of the base block (354) is greater than the lateral width of the swing frame block (353).

6. A swing mechanism according to claim 5, characterized in that: Two reinforcing ribs (355) are arranged between the linkage member (35) and the base block (354), and an angle a is formed between the extension lines of the two reinforcing ribs (355).

7. A swing mechanism according to claim 7, characterized in that: The angle a between the extension lines of the two reinforcing ribs (355) is in the range of 45-75°.

8. A swing mechanism according to claim 1, characterized in that: The swing mechanism further comprises a controller (24), a wireless transmission module, and a speaker (22) electrically connected to the controller (24); the control motor (31) is electrically connected to the controller (24); the controller (24) receives music information from the speaker (22) via the wireless transmission module and outputs the processed signal to the control motor (31), so that the music information is output in the form of a rotation speed of the control motor (31).

9. A swing mechanism according to claim 1, characterized in that: The swing mechanism further comprises a controller (24), a wireless transmission module, and a cardiopulmonary function detector (23) electrically connected to the controller (24); the cardiopulmonary function detector (23) is used to detect respiratory frequency information of a human body sitting or lying on the support frame (21); the control motor (31) is electrically connected to the controller (24); the controller (24) receives the respiratory frequency information of the human body detected by the cardiopulmonary function detector (23) through the wireless transmission module and outputs the processed signal to the control motor (31), so that the respiratory frequency information of the human body is output in the form of a rotation speed of the control motor (31).

10. A method for controlling a swaying mechanism according to any one of claims 1 to 9, comprising the following steps: S1: starting the control motor (31), the output shaft of the control motor (31) drives the worm (311) to rotate, the worm (311) drives the worm wheel (331) to rotate, and at the same time, the driving shaft (33) and the driving roller (332) rotate synchronously, and under the action of the transmission belt (36), the driven roller (341) drives the control driven shaft (34) to rotate, so that the linkage member (35) can rotate clockwise with the swing frame end (351) as the rotation point; S2: When the base end (352) of the linkage member (35) rotates to the highest point or the lowest point, the swing arm (40) drives the swing frame (20) to swing forward relative to the base (10); S3: When the base end (352) of the linkage member (35) rotates to the same horizontal position as the swing arm end, the swing arm (40) drives the swing frame (20) to swing backward relative to the base (10); S4: In S2 and S3, the control motor (31) can control the rotation frequency of the linkage member (35) to be 6-25 times per minute, and the user sitting or lying on the support frame (21) can adjust the frequency according to his / her own breathing frequency, thereby achieving the effect of slowing down the user's breathing frequency and helping sleep.

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