Shank overturning and swinging massage mechanism applied to massage chair

Abstract

The utility model discloses a shank overturn swing massage mechanism applied to massage armchairs, which comprises a leg support and a base, a swing support is rotatably mounted on the base, transmission shafts and a driving mechanism are mounted on the base, the transmission shafts are parallelly arranged on the swing support at intervals, the driving mechanism drives the transmission shafts to rotate, and the driving mechanism is connected to the base. Two sets of swing arm assemblies linked with the swing support to achieve swing action are arranged on the two sides of the transmission shaft, the leg support is located on the swing support and can act along with the swing support, each swing arm assembly comprises an eccentric wheel and a swing arm which are connected to the transmission shaft, and the eccentric directions of the two eccentric wheels are opposite in the radial direction of the transmission shaft. The leg support can swing up and down in a small range, so that calf muscles are relaxed, and the transmission structure is compact, stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of massage chair technology, and in particular to a leg-flipping and rocking massage mechanism applied to a massage chair. Background Technology

[0002] Massage chairs utilize mechanical rolling and squeezing forces to provide massage. The core mechanism consists of robotic arms and a control motor that allows them to move freely along guide rails, providing massage to the back and buttocks according to the rail length. Different features on the massage chair can massage different parts of the body, such as the neck, back, buttocks, and legs; the leg rest feature is specifically designed for massaging the legs.

[0003] The leg rests of a massage chair are usually adjusted when lying down or standing up to provide better comfort and support. However, the leg rests cannot swing in place (the position of the leg rests after the angle is adjusted), so the legs cannot achieve better muscle relaxation. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a leg-flipping and rocking massage mechanism for use in massage chairs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a leg-flipping and rocking massage mechanism for a massage chair, comprising a leg rest and a base. The leg rest is provided with a leg support groove. A swing bracket is rotatably mounted on the base. A transmission shaft parallel to and spaced apart from the swing bracket and a drive mechanism for driving the transmission shaft to rotate are mounted on the base. The drive mechanism is connected to the base. Two sets of swing arm assemblies are provided on both sides of the transmission shaft to achieve the rocking motion in conjunction with the swing bracket. The leg rest is located on the swing bracket and can move with the swing bracket. Each set of swing arm assemblies includes an eccentric wheel connected to the transmission shaft and a swing arm. The two eccentric wheels are eccentric in opposite directions in the radial direction of the transmission shaft. One end of the swing arm rotates with the eccentric wheel, and the other end is movably connected to the swing bracket.

[0006] As a preferred embodiment of this utility model, the two sets of swing arm assemblies are symmetrically arranged on both sides of the transmission shaft, and the base is symmetrically provided with two ball seats that are respectively in motion with the swing arms.

[0007] As a preferred technical solution of this utility model, the swing arm includes a left arm and a right arm connected to each other. The upper ends of the left arm and the right arm are rotatably engaged with the eccentric wheel. The lower ends of the left arm and the right arm are separated by a certain distance and form an opening between them. The lower ends of the left arm and the right arm are provided with ball grooves on one side close to each other. The ball seat is located in the opening and the outer spherical surface of the ball seat is engaged with the inner spherical surface of the ball grooves on both sides.

[0008] As a preferred embodiment of the present invention, the swing bracket includes two U-shaped components and two connectors symmetrically arranged at the bottom of the two U-shaped components, each of which is provided with a ball seat.

[0009] As a preferred technical solution of this utility model, the base is fixed with an installation shaft perpendicular to the transmission shaft, and a connecting seat is provided at the lower center of the two U-shaped components. The installation shaft passes through the front and rear connecting seats, and the swing bracket swings around the central axis of the installation shaft.

[0010] As a preferred embodiment of this utility model, the two ends of the transmission shaft are provided with scraping wheels, and the two scraping wheels are eccentric in opposite directions in the radial direction of the transmission shaft.

[0011] As a preferred technical solution of this utility model, the ends of the two scraping wheels connected to the drive shaft are respectively provided with eccentric holes, one of the scraping wheels having an eccentric hole biased to the left in the radial direction, and the other scraping wheel having an eccentric hole biased to the right in the radial direction.

[0012] As a preferred embodiment of this utility model, the leg support is mountain-shaped and has two symmetrically arranged lower leg support grooves.

[0013] As a preferred technical solution of this utility model, the base is provided with a support frame, the support frame includes a mounting shaft fixed inside the base and a connecting frame connected to the end of the mounting shaft and located outside the base, the swing bracket swings around the central axis of the mounting shaft, a mounting plate is connected to the mounting shaft, the drive assembly is fixed on the mounting plate, the mounting shaft is perpendicular to the transmission shaft and the mounting shaft is located below the transmission shaft.

[0014] As a preferred embodiment of the present invention, the drive assembly includes a motor and a reduction assembly linked to the motor, and the transmission shaft passes through the reduction assembly and is driven by the reduction assembly.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: the eccentric wheels of the two swing arms are eccentric in opposite directions, one eccentric wheel is biased to the left and the other eccentric wheel is biased to the right. When the transmission shaft rotates, the two swing arms will drive the swing bracket to a state where one side is high and the other side is low. As the transmission shaft continues to rotate, the swing bracket will swing up and down, thereby simulating the action of the leg support squeezing the calf muscles, so that the leg muscles can be better relaxed. The swing bracket is equipped with a ball seat, and the swing arm and the ball seat are in ball contact cooperation to avoid various dead point problems during the swing. The way the two sets of swing arm components cooperate with the swing bracket makes the transmission structure compact, stable and reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an exploded view of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model without the leg support;

[0019] Figure 4 This is a top view of the present invention with the leg support removed;

[0020] Figure 5 This is an exploded view of the present invention with the leg rest and base removed;

[0021] Figure 6 This is a schematic diagram of the swing arm structure in this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the transmission shaft and the two eccentric wheels in this utility model.

[0023] Reference numerals: 1. Leg support; 2. Base; 3. Lower leg support groove; 4. Swing bracket; 5. Drive shaft; 6. Eccentric wheel; 7. Swing arm; 8. Ball seat; 9. Left arm; 10. Right arm; 11. Movable opening; 12. Ball groove; 13. U-shaped component; 14. Connector; 15. Mounting shaft; 16. Connecting seat; 17. Scraping wheel; 18. Eccentric hole; 19. Support frame; 20. Connecting frame; 21. Mounting plate; 22. Motor; 23. Reduction assembly. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figure 1-7 The illustrated calf-flipping and rocking massage mechanism for a massage chair includes a leg rest 1 and a base 2. The leg rest 1 is mountain-shaped and has two symmetrical calf support grooves 3. A swing bracket 4 is rotatably mounted on the base 2. A drive shaft 5, parallel and spaced apart from the swing bracket 4, and a drive mechanism for rotating the drive shaft 5 are mounted on the base 2. The drive mechanism is connected to the base 2. Two sets of swing arm assemblies are arranged on both sides of the drive shaft 5, which are linked to the swing bracket 4 to realize the rocking motion. The leg rest 1 is located on the swing bracket 4 and can move with the swing bracket 4. Both sets of swing arm assemblies include an eccentric mechanism connected to the drive shaft 5. The wheel 6 and the swing arm 7 are two eccentric wheels 6 with opposite eccentric directions in the radial direction of the transmission shaft 5 (the eccentric hole 18 of one eccentric wheel 6 is biased to the left and the eccentric hole 18 of the other eccentric wheel 6 is biased to the right. In this embodiment, the left and right sides are relative. For example, when the transmission shaft 5 rotates to other positions, the left and right directions can also be the up and down directions). One end of the swing arm 7 is rotated and engaged with the eccentric wheel 6, and the other end is movably connected to the swing bracket 4. In this embodiment, there is a gap between the leg support 1 and the base 2. When the swing bracket 4 swings, the leg support 1 will swing synchronously. Therefore, a distance should be reserved to avoid the base 2 interfering with the rotation of the leg support 1.

[0028] The eccentric wheels 6 of the two swing arms 7 have opposite eccentric directions, with one eccentric wheel 6 biased to the left and the other biased to the right. When the drive shaft 5 rotates, the two swing arms 7 will cause the swing bracket 4 to be in a state where one side is high and the other side is low. As the drive shaft 5 continues to rotate, the swing bracket 4 will swing up and down, thereby simulating the action of the leg support 1 squeezing the calf muscles, so that the leg muscles can be better relaxed. A ball seat 8 is provided on the swing bracket 4. The swing arm 7 and the ball seat 8 are in ball contact with each other to avoid various dead point problems during the swing. The way the two sets of swing arm components work together with the swing bracket 4 results in a compact, stable and reliable transmission structure.

[0029] The two sets of swing arm assemblies are symmetrically arranged on both sides of the drive shaft 5, and two ball seats 8 are symmetrically arranged on the base 2, which are respectively movable and cooperate with the swing arm 7.

[0030] The swing arm 7 includes a left arm 9 and a right arm 10 connected to each other. The upper ends of the left arm 9 and the right arm 10 are rotatably engaged with the eccentric wheel 6. The lower ends of the left arm 9 and the right arm 10 are separated by a certain distance and form a movable opening 11 between them. The lower ends of the left arm 9 and the right arm 10 are close to each other and have a ball groove 12 recessed inward on one side. The ball seat 8 is located in the movable opening 11 and the outer spherical surface of the ball seat 8 is engaged with the inner spherical surface of the ball grooves 12 on both sides.

[0031] The swing bracket 4 includes two U-shaped components 13 and two connectors 14 symmetrically arranged at the bottom of the two U-shaped components 13. Each connector 14 is provided with a ball seat 8. The bottom of the ball seat 8 is provided with a groove so that the ball seat 8 can be embedded in the connector 14; or the ball seat 8 can be directly welded to the connector 14; or the ball seat 8 can be a split structure, and the two can be assembled on both sides of the connector 14. In this embodiment, the connector 14 is vertically installed between the two U-shaped components 13.

[0032] A mounting shaft 15 perpendicular to the transmission shaft 5 is fixed on the base 2. A connecting seat 16 is provided at the lower center of the two U-shaped components 13. The mounting shaft 15 passes through (directly or with shaft elements at both ends of the mounting shaft 15) the front and rear connecting seats 16. The swing bracket 4 swings around the central axis of the mounting shaft 15. In this embodiment, the connecting seat 16 can be a bearing seat or a connecting seat 16 with only a shaft hole.

[0033] The two ends of the drive shaft 5 are provided with scraping wheels 17, and the two scraping wheels 17 are eccentric in opposite directions in the radial direction of the drive shaft 5.

[0034] The two scraping wheels 17 are respectively provided with eccentric holes 18 at the ends connected to the drive shaft 5. The eccentric hole 18 of one scraping wheel 17 is biased to the left in the radial direction, and the eccentric hole 18 of the other scraping wheel 17 is biased to the right in the radial direction. The left and right sides in this embodiment are relative. For example, when the drive shaft 5 is rotated to other positions, the left and right directions can also be the up and down directions. The scraping wheels 17 can realize scraping massage of the calf.

[0035] A support frame 19 is provided on the base 2. The support frame 19 includes a mounting shaft 15 fixed inside the base 2 and a connecting frame 20 connected to the end of the mounting shaft 15 and located outside the base 2. The swing bracket 4 swings around the central axis of the mounting shaft 15. A mounting plate 21 is connected to the mounting shaft 15. The drive assembly is fixed on the mounting plate 21. The mounting shaft 15 is perpendicular to the transmission shaft 5 and is located below the transmission shaft 5.

[0036] The drive assembly includes a motor 22 and a reduction assembly 23 that is linked to the motor 22 (this is prior art and therefore not described in detail; this application does not describe in detail how the motor 22 and the reduction assembly 23 are linked), and the drive shaft 5 passes through the reduction assembly 23 and is driven by the reduction assembly 23.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of this utility model and are not intended to limit it. Various changes and modifications can be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A leg-flipping and rocking massage mechanism for use in a massage chair, comprising a leg rest (1) and a base (2), wherein the leg rest (1) is provided with a leg support groove (3), characterized in that: A swing bracket (4) is rotatably mounted on the base (2). A drive shaft (5) parallel to and spaced apart from the swing bracket (4) and a drive mechanism for driving the drive shaft (5) to rotate are mounted on the base (2). The drive mechanism is connected to the base (2). Two sets of swing arm assemblies are provided on both sides of the drive shaft (5) to achieve a swinging motion in conjunction with the swing bracket (4). The leg support (1) is located on the swing bracket (4) and can move with the swing bracket (4). Both sets of swing arm assemblies include an eccentric wheel (6) connected to the drive shaft (5) and a swing arm (7). The two eccentric wheels (6) are eccentric in opposite directions in the radial direction of the drive shaft (5). One end of the swing arm (7) is rotatably engaged with the eccentric wheel (6), and the other end is movably connected to the swing bracket (4).

2. The leg-flipping and rocking massage mechanism for a massage chair according to claim 1, characterized in that: The two sets of swing arm assemblies are symmetrically arranged on both sides of the drive shaft (5), and two ball seats (8) that are symmetrically arranged on the base (2) respectively cooperate with the swing arm (7).

3. The leg-flipping and rocking massage mechanism for a massage chair according to claim 2, characterized in that: The swing arm (7) includes a left arm (9) and a right arm (10) connected to each other. The upper ends of the left arm (9) and the right arm (10) are rotatably engaged with the eccentric wheel (6). The lower ends of the left arm (9) and the right arm (10) are separated by a certain distance and form an opening (11) between them. The lower ends of the left arm (9) and the right arm (10) are close to each other and have ball grooves (12) on one side. The ball seat (8) is located in the opening (11) and the outer spherical surface of the ball seat (8) is engaged with the inner spherical surface of the ball grooves (12) on both sides.

4. The leg-flipping and rocking massage mechanism for a massage chair according to claim 2, characterized in that: The swing bracket (4) includes two U-shaped components (13) and two connectors (14) symmetrically arranged at the bottom of the two U-shaped components (13), each of the connectors (14) being provided with a ball seat (8).

5. The leg-flipping and rocking massage mechanism for a massage chair according to claim 4, characterized in that: The base (2) is fixed with an installation shaft (15) perpendicular to the transmission shaft (5). A connecting seat (16) is provided at the lower center of the two U-shaped components (13). The installation shaft (15) passes through the front and rear connecting seats (16). The swing bracket (4) swings around the central axis of the installation shaft (15).

6. The leg-flipping and rocking massage mechanism for a massage chair according to claim 1, characterized in that: The two ends of the drive shaft (5) are provided with scraping wheels (17), and the two scraping wheels (17) are eccentric in opposite directions in the radial direction of the drive shaft (5).

7. The leg-flipping and rocking massage mechanism for a massage chair according to claim 6, characterized in that: Two scraping wheels (17) are respectively provided with eccentric holes (18) at the ends connected to the drive shaft (5). The eccentric hole (18) of one scraping wheel (17) is biased to the left in the radial direction, and the eccentric hole (18) of the other scraping wheel (17) is biased to the right in the radial direction.

8. The leg-flipping and rocking massage mechanism for a massage chair according to claim 1, characterized in that: The leg support (1) is mountain-shaped and has two symmetrical lower leg support grooves (3) on it.

9. The leg-flipping and rocking massage mechanism for a massage chair according to claim 1, characterized in that: The base (2) is provided with a support frame (19), which includes a mounting shaft (15) fixed inside the base (2) and a connecting frame (20) connected to the end of the mounting shaft (15) and located outside the base (2). The swing bracket (4) swings around the central axis of the mounting shaft (15). The mounting shaft (15) is connected to a mounting plate (21). The drive mechanism is fixed on the mounting plate (21). The mounting shaft (15) is perpendicular to the transmission shaft (5) and is located below the transmission shaft (5).

10. The leg-flipping and rocking massage mechanism for a massage chair according to claim 1 or 9, characterized in that: The drive mechanism includes a motor (22) and a reduction assembly (23) linked to the motor (22). The transmission shaft (5) passes through the reduction assembly (23) and is driven by the reduction assembly (23).

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