Swing driving assembly and massage chair

Abstract

The swing assembly comprises a motor and a first crank in transmission connection with the motor, a connecting shaft is arranged at the other end of the first crank, the connecting shaft and the first crank are arranged in a non-coaxial mode, one end of a push rod is rotatably arranged on the connecting shaft in a sleeving mode, the other end of the push rod is used for being hinged to a swing frame, and the swing assembly further comprises an induction assembly installed on a base. After a stop instruction is received, the motor drives the connecting shaft to rotate to a stop position, so that the induction assembly is triggered, the motor is shut down, and when the connecting shaft is located at the stop position, the push rod and the first crank are collinear, that is, the torque on the first crank in the acting force direction of the push rod is zero. Therefore, when the seat part is in a shutdown state, the impact load generated by sitting of a user cannot act on the motor, so that the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of massage chair technology, and in particular to a rocking drive component and a massage chair. Background Technology

[0002] Currently, with the continuous improvement of people's living standards, massage chairs are becoming increasingly popular and widely used as health care devices. They utilize various massage mechanisms, such as mechanical, pneumatic, vibration, and percussion massages, applied to the back, seat, hands, legs, and feet to massage the body and achieve health benefits. Additionally, some massage chairs incorporate a crank mechanism that allows the seat to rock, further enhancing the user experience.

[0003] However, when the seat is in a stopped state, the impact load generated by the user sitting on it will act on the motor. The motor will be damaged by frequent impacts over a long period of time, thus shortening the motor's lifespan. Utility Model Content

[0004] This invention provides a rocking drive assembly and a massage chair, which reduces the impact load generated when the user sits on the motor, thereby extending the service life of the motor.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A rocking drive assembly includes a base on which a motor is mounted, a first crank and a push rod. One end of the first crank is rotatably connected to the base, and the other end of the first crank is provided with a connecting shaft. The connecting shaft and the first crank are not coaxial. The motor is drivenly connected to the first crank. One end of the push rod is rotatably sleeved on the connecting shaft, and the other end of the push rod is hinged to the rocking frame to provide rocking power to the back frame.

[0007] It also includes a sensing component installed on the base, used to monitor whether the motor drives the connecting shaft to a stop position after receiving a stop command; when the connecting shaft is in the stop position, the torque of the force along the push rod on the first crank is zero.

[0008] Furthermore, the sensing component includes a magnetic element and a Hall effect sensor. The magnetic element is mounted on the connecting shaft, and the Hall effect sensor is mounted on the base. When a stop command is received and the connecting shaft rotates to the stop position, the magnetic element triggers the Hall effect sensor.

[0009] Furthermore, the base is provided with a first fixed seat, which is located at one end of the connecting shaft, and the first crank is rotatably connected to the first fixed seat; and the motor is sequentially connected to the first crank through a first-stage reduction mechanism and a second-stage reduction mechanism.

[0010] Furthermore, the base is provided with a second fixed seat, which is located at the other end of the push rod; it also includes a second crank, one end of which is connected to the connecting shaft, and the other end of which is rotatably connected to the second fixed seat.

[0011] Furthermore, the primary reduction mechanism is a worm gear transmission structure, and the secondary reduction mechanism is a belt drive.

[0012] A rocking massage chair, comprising:

[0013] The frame includes a seat, a swing rod, and a swing frame. The swing frame has the swing rod at both ends, with one end of the swing rod hinged to the seat and the other end hinged to the swing frame. The swing frame has a first fixing rod, which is hinged to the back frame.

[0014] A tilting drive assembly, its fixed end hinged to the swaying frame and its output end hinged to the back frame, is used to drive the back frame to tilt backward and tilt forward relative to the swaying frame; and...

[0015] As described above in the swing drive assembly, the base is mounted on the frame, and the other end of the push rod is hinged to the swing frame.

[0016] Furthermore, the swing frame is provided with a transition shaft, the other end of the push rod is rotatably sleeved on the transition shaft, and there is a first displacement space between the push rod and the connecting shaft that displaces along the axial direction of the connecting shaft, and there is a second displacement space between the push rod and the transition shaft that displaces along the axial direction of the transition shaft.

[0017] Furthermore, the connecting shaft has first washers at both ends, and the gap between one end of the push rod and the two first washers constitutes the first displacement space; the adapter shaft has second washers at both ends, and the gap between the other end of the push rod and the two second washers constitutes the second displacement space.

[0018] Furthermore, the back frame is hinged to a leg massage component at its front end, and also includes a lifting component. One end of the lifting component is hinged to the rocker frame, and the other end of the lifting component is hinged to the leg massage component. The back frame is hinged to the lifting component.

[0019] When the backrest tilts backward, the leg massage component is lifted by the lifting assembly; when the backrest rises forward, the leg massage component is lowered by the lifting assembly.

[0020] Furthermore, the lifting assembly includes a first link, a second link, and a third link that are hinged sequentially. The first link is hinged to the rocker frame, the second link is hinged to the back frame at its middle section, and the third link is hinged to the leg massage assembly.

[0021] The beneficial effects of this utility model are:

[0022] 1. This utility model discloses a rocking drive assembly, including a motor and a transmission connected to a first crank. The other end of the first crank has a connecting shaft, which is not coaxial with the first crank. One end of a push rod is rotatably sleeved on the connecting shaft, and the other end of the push rod is hinged to the rocking frame. It also includes a sensing component mounted on the base. Upon receiving a stop command, the motor drives the connecting shaft to a stop position, thereby triggering the sensing component and shutting off the motor. When the connecting shaft is in the stop position, the push rod and the first crank are collinear, meaning the torque on the first crank along the direction of the push rod's force is zero. Therefore, when the seat is in a stopped state, the impact load generated by the user sitting on it will not act on the motor, thus extending the motor's service life.

[0023] 2. The present invention proposes a swing drive assembly in which the motor is sequentially connected to the first crank through a first-stage reduction mechanism and a second-stage reduction mechanism. The first-stage reduction mechanism is a worm gear transmission structure, and the second-stage reduction mechanism is a belt drive. When subjected to external impact loads, the belt drive is preferentially acted upon. The belt drive is a flexible connection, which can alleviate the external impact loads and solve the problem of damage to the worm gear transmission mechanism due to excessive external loads.

[0024] 3. The present invention proposes a swing drive assembly, wherein the base is provided with a first fixed seat and a second fixed seat, and the two ends of the connecting shaft are respectively connected to the first fixed seat and the second fixed seat through a first crank and a second crank, thereby improving the bearing capacity and stability.

[0025] 4. The present invention proposes a swing drive assembly in which the push rod and the connecting shaft have a first displacement space along the axial direction of the connecting shaft, and the push rod and the adapter shaft have a second displacement space along the axial direction of the adapter shaft, thereby improving the problem of unsmooth movement caused by the non-parallelism of the adapter shaft and the connecting shaft.

[0026] 6. The massage chair proposed in this utility model has a multi-link mechanism for the lifting component. The force generated by the tilting and rising of the back frame drives the leg massage component to rise or fall through the multi-link mechanism, thus avoiding the use of a drive motor and reducing costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a swing drive component according to the present invention;

[0029] Figure 2 This is a schematic diagram of a swing drive component of the present invention in the stopped position;

[0030] Figure 3 This is a schematic diagram of a swing drive component of this utility model in a dead angle position;

[0031] Figure 4 This is an exploded view of a swing drive component according to the present invention;

[0032] Figure 5 This is a schematic diagram of another embodiment of a swing drive component of the present invention;

[0033] Figure 6 This is a schematic diagram of the sitting posture of a massage chair according to the present invention;

[0034] Figure 7 This is a schematic diagram of the reclining posture of a massage chair according to the present invention;

[0035] In the diagram, 10 is the rocking drive assembly; 20 is the base; 201 is the first fixed seat; 202 is the second fixed seat; 301 is the first-stage reduction mechanism; 302 is the second-stage reduction mechanism; 40 is the motor; 50 is the first crank; 501 is the first rotating shaft; 502 is the first rotating component; 60 is the second crank; 70 is the push rod; 80 is the connecting shaft; 90 is the transmission shaft; 1001 is the worm gear; 1002 is the worm; 110 is the Hall effect sensor; 1201 is the first pulley; 1202 is the second pulley; 1 30. Massage chair; 140. Seat frame; 150. Swing bar; 160. Rocking frame; 1601. Adapter shaft; 170. Backrest frame; 1801. First fixed rod; 1802. Second fixed rod; 190. Reverse lifting drive assembly; 2001. First displacement space; 2002. Second displacement space; 2101. First pad; 2102. Second pad; 220. Suspension frame; 230. Leg massage assembly; 2401. First connecting rod; 2402. Second connecting rod; 2403. Third connecting rod. Detailed Implementation

[0036] Example 1

[0037] The following is combined Figures 1-4 This utility model will be described in detail.

[0038] A rocking drive assembly 10 includes a base 20, on which a motor 40 is mounted. It also includes a first crank 50 and a push rod 70. One end of the first crank 50 is rotatably connected to the base 20, and the other end of the first crank 50 is provided with a connecting shaft 80. The connecting shaft 80 and the first crank 50 are not coaxial. The motor 40 is drivenly connected to the first crank 50. One end of the push rod 70 is rotatably sleeved on the connecting shaft 80, and the other end of the push rod 70 is hinged to the rocking frame 160 to provide rocking power to the back frame 170.

[0039] It also includes a sensing component installed on the base 20 to monitor whether the motor 40 drives the connecting shaft 80 to the stop position after receiving a stop command; when the connecting shaft 80 is in the stop position, the torque of the force along the push rod 70 on the first crank 50 is zero.

[0040] When in use, upon receiving a stop command, motor 40 drives connecting shaft 80 to rotate to the stop position. Figure 2 This illustrates one scenario where the sensing component is not triggered. Assume the impact load generated when sitting down is F, the distance between the load F and the rotation axis of the first crank 50 is L, and the generated torque is FL. When the user sits on the massage chair 130, the torque generated acts on the motor 40. The motor 40 will be damaged by frequent impacts over a long period of time, thereby shortening the life of the motor 40. Figure 3 The scenario where the sensing component is triggered is illustrated. When the connecting shaft 80 is in the stopped position, the push rod 70 and the first crank 50 are collinear, i.e., L is 0, and the torque on the first crank 50 along the direction of the force exerted by the push rod 70 is zero. Therefore, when the seat is in the stopped state, the impact load generated by the user sitting on it will not act on the motor 40, thereby extending the service life of the motor 40.

[0041] In this embodiment, the sensing component includes a magnetic element and a Hall effect sensor 110. The magnetic element is mounted on the connecting shaft 80, and the Hall effect sensor 110 is mounted on the base 20. When a stop command is received and the connecting shaft 80 rotates to the stop position, the magnetic element triggers the Hall effect sensor 110.

[0042] In this embodiment, the base 20 is provided with a first fixed seat 201, which is located on one side of the connecting shaft 80. The first crank 50 is rotatably connected to the first fixed seat 201, and the motor 40 is sequentially connected to the first crank 50 through a first-stage reduction mechanism 301 and a second-stage reduction mechanism 302. Furthermore, the first-stage reduction mechanism 301 is a worm gear-worm transmission structure, and the second-stage reduction mechanism 302 is a belt drive. When subjected to external impact loads, the belt drive is preferentially acted upon. The belt drive, being a flexible connection, can alleviate external impact loads and solve the problem of excessive external loads damaging the worm gear 1001-worm 1002 transmission mechanism.

[0043] In this embodiment, the first crank 50 includes a first rotating shaft 501 and a first rotating component 502. One end of the first rotating component 502 is connected to the first rotating shaft 501, and the other end of the first rotating component 502 is connected to a connecting shaft 80. The first rotating shaft 501 rotatably passes through the first fixed base 201. The base 20 is provided with a transmission shaft 90. One end of the transmission shaft 90 is provided with a worm gear 1001, and the output end of the first drive motor 40 is provided with a worm 1002, which is drivenly connected to the worm gear 1001. The other end of the transmission shaft 90 is provided with a first pulley 1201, and the first rotating shaft 501 is provided with a second pulley 1202. The diameter of the first pulley 1201 is smaller than that of the second pulley 1202, and the first pulley 1201 is drivenly connected to the second pulley 1202 by a synchronous belt.

[0044] When the motor 40 starts, it drives the transmission shaft 90 through the first-stage reduction mechanism 301. The transmission shaft 90 drives the first pulley 1201 to rotate. The first pulley 1201 drives the second pulley 1202 to rotate through the synchronous belt. The second pulley 1202 drives the first rotating component 502 to rotate through the first rotating shaft 501, which in turn pushes the push rod 70 to reciprocate.

[0045] Example 2

[0046] The difference between this embodiment and Embodiment 2 is that, as Figure 5 As shown, the base 20 is provided with a second fixed seat 202, which is located at the other end of the push rod 70; it also includes a second crank 60, one end of which is connected to the connecting shaft 80, and the other end of which is rotatably connected to the second fixed seat 202. Therefore, one end of the connecting shaft 80 is connected to the first fixed seat 201 through the first crank 50, and the other end of the connecting shaft 80 is connected to the second fixed seat 202 through the second crank 60, thereby improving the movement stability of the push rod 70.

[0047] Example 3

[0048] This embodiment proposes a rocking massage chair 130, such as Figure 6 and Figure 7 As shown, it includes:

[0049] The frame includes a seat frame 140, a swing rod 150, and a swing frame 160. The swing frame 160 has swing rods 150 at both ends. One end of the swing rod 150 is hinged to the seat frame 140, and the other end of the swing rod 150 is hinged to the swing frame 160. The swing frame 160 has a first fixing rod 1801, which is hinged to the back frame 170.

[0050] A tilting drive assembly 190, with its fixed end hinged to the swing frame 160 and its output end hinged to the back frame 170, is used to drive the back frame 170 to tilt backward and tilt forward relative to the swing frame 160; and...

[0051] As described above, the rocking drive assembly 10 has a base 20 mounted on a seat 140, and the other end of the push rod 70 is hinged to the rocking frame 160.

[0052] In this embodiment, the swing frame 160 is provided with a transition shaft 1601, and the other end of the push rod 70 is rotatably sleeved on the transition shaft 1601. There is a first displacement space 2001 between the push rod 70 and the connecting shaft 80, which is displaced along the axial direction of the connecting shaft 80, and a second displacement space 2002 between the push rod 70 and the transition shaft 1601, which is displaced along the axial direction of the transition shaft 1601. This improves the problem of unsmooth movement caused by the non-parallelism between the transition shaft 1601 and the connecting shaft 80.

[0053] In this embodiment, the connecting shaft 80 has first washers 2101 at both ends, and the gap between one end of the push rod 70 and the two first washers 2101 forms a first displacement space 2001; the adapter shaft 1601 has second washers 2102 at both ends, and the gap between the other end of the push rod 70 and the two second washers 2102 forms a second displacement space 2002. The arrangement of the first washers 2101 and the second washers 2102 eliminates abnormal noise and vibration generated by relative motion and limits excessive axial displacement of the connecting rod.

[0054] In this embodiment, the seat frame 140 is provided with a suspension frame 220, and one end of each swing rod 150 is hinged to the suspension frame 220 and the other end is hinged to the swing frame 160, so that the suspension, the swing rod 150 and the swing frame 160 constitute a double rocker mechanism.

[0055] In this embodiment, a leg massage component 230 is hinged to the front end of the back frame 170. The back frame also includes a lifting component that drives the leg massage component 230 to rise and fall relative to the back frame 170. One end of the lifting component is hinged to the rocker frame 160, and the other end is hinged to the leg massage component 230. The back frame 170 is hinged to the lifting component. In use, when the back frame 170 tilts backward, the leg massage component 230 is raised via the lifting component; when the back frame 170 rises forward, the leg massage component 230 is lowered via the lifting component.

[0056] In this embodiment, the lifting assembly includes a first link 2401, a second link 2402, and a third link 2403, which are hinged sequentially. The first link 2401 is hinged to a second fixed rod 1802 provided on the rocker frame 160, the second link 2402 is hinged to the back frame 170 at its middle, and the third link 2403 is hinged to the leg massage assembly 230. When the back frame 170 tilts backward, the first link 2401 pushes the second link 2402 to rotate counterclockwise, and then pushes the leg massage assembly 230 to rise through the third link 2403; when the back frame 170 rises forward, the first link 2401 pushes the second link 2402 to rotate clockwise, and then retracts the leg massage assembly 230 through the third link 2403.

[0057] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A rocking drive assembly, comprising a base on which a motor is mounted, characterized in that, It also includes a first crank and a push rod. One end of the first crank is rotatably connected to the base, and the other end of the first crank is provided with a connecting shaft. The connecting shaft and the first crank are not coaxial. The motor is driven and connected to the first crank. One end of the push rod is rotatably sleeved on the connecting shaft, and the other end of the push rod is used to hinge to the rocker frame to provide rocking power for the back frame. It also includes a sensing component installed on the base, used to monitor whether the motor drives the connecting shaft to a stop position after receiving a stop command; when the connecting shaft is in the stop position, the torque of the force along the push rod on the first crank is zero.

2. The swing drive assembly as described in claim 1, characterized in that, The sensing component includes a magnetic element and a Hall effect sensor. The magnetic element is mounted on the connecting shaft, and the Hall effect sensor is mounted on the base. When a stop command is received and the connecting shaft rotates to the stop position, the magnetic element triggers the Hall effect sensor.

3. The swing drive assembly as described in claim 2, characterized in that, The base is provided with a first fixed seat, which is located at one end of the connecting shaft. The first crank is rotatably connected to the first fixed seat. The motor is connected to the first crank in sequence through a first-stage reduction mechanism and a second-stage reduction mechanism.

4. A swing drive assembly as described in claim 3, characterized in that, The base is provided with a second fixed seat, which is located at the other end of the push rod; it also includes a second crank, one end of which is connected to the connecting shaft, and the other end of which is rotatably connected to the second fixed seat.

5. A swing drive assembly as described in claim 3, characterized in that, The first-stage reduction mechanism is a worm gear transmission structure, and the second-stage reduction mechanism is a belt drive.

6. A rocking massage chair, characterized in that, include: The frame includes a seat, a swing rod, and a swing frame. The swing frame has the swing rod at both ends, with one end of the swing rod hinged to the seat and the other end hinged to the swing frame. The swing frame has a first fixing rod, which is hinged to the back frame. A tilting drive assembly, its fixed end hinged to the swaying frame and its output end hinged to the back frame, is used to drive the back frame to tilt backward and tilt forward relative to the swaying frame; and... The rocking drive assembly as described in any one of claims 1-5, wherein the base is mounted on the frame, and the other end of the push rod is hinged to the rocking frame.

7. A rocking massage chair as described in claim 6, characterized in that, The swing frame is provided with a transition shaft, and the other end of the push rod is rotatably sleeved on the transition shaft. There is a first displacement space between the push rod and the connecting shaft that is axially displaced along the connecting shaft, and there is a second displacement space between the push rod and the transition shaft that is axially displaced along the transition shaft.

8. A rocking massage chair as described in claim 7, characterized in that, The connecting shaft has first washers at both ends, and the gap between one end of the push rod and the two first washers constitutes the first displacement space; the adapter shaft has second washers at both ends, and the gap between the other end of the push rod and the two second washers constitutes the second displacement space.

9. A rocking massage chair as described in claim 6, characterized in that, The back frame is hinged to a leg massage component at its front end and also includes a lifting component. One end of the lifting component is hinged to the rocker frame, and the other end of the lifting component is hinged to the leg massage component. The back frame is hinged to the lifting component. When the backrest tilts backward, the leg massage component is lifted by the lifting assembly; when the backrest rises forward, the leg massage component is lowered by the lifting assembly.

10. A rocking massage chair as described in claim 9, characterized in that, The lifting assembly includes a first link, a second link, and a third link that are hinged in sequence. The first link is hinged to the rocker frame, the second link is hinged to the back frame at the middle, and the third link is hinged to the leg massage assembly.

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