Driving structure for shank hip twisting and massage chair

Abstract

The utility model discloses a shank hip twisting driving structure and a massage chair. The shank hip twisting driving structure comprises a connecting shaft, a shank support rotationally connected to the connecting shaft and a swing assembly connected to the shank support. The swing assembly comprises a driver, an eccentric connecting piece, a connecting base and a swing arm. The driver is mounted on the connecting seat, and the connecting seat is connected with the connecting shaft; the eccentric connecting piece is mounted on an output shaft of the driver, the eccentric connecting piece is connected with the swing arm, and the swing arm is rotatably connected with the shank support; the driver drives the eccentric connecting piece to rotate eccentrically and drives the shank support to swing on the connecting shaft in a reciprocating mode through the swing arm. According to the scheme, the hip twisting function can be provided while massage is provided at the shank positions.

Description

Technical Field

[0001] This utility model relates to a massage device, specifically a calf-hip twisting drive structure and a massage chair. Background Technology

[0002] As an important massage device that can relax and massage the whole body, massage chairs currently only offer airbag massage for the calves.

[0003] Referring to existing technology, Chinese Utility Model Patent CN221731498U discloses a leg massager, which includes a leg massage component and a foot massage component installed below the leg massage component. The leg massage component has two placement slots arranged on the left and right for placing the human leg, and the foot massage component has a receiving slot connected to the placement slot for placing the human foot. The inner wall of the placement slot is provided with a massage airbag for massaging acupoints. The bottom of the placement slot, facing the back of the human leg, is detachably equipped with an adjusting airbag that pushes the human leg so that the acupoints of the human body form a tight contact with the massage airbag, so that the massage airbag can fully contact and massage the acupoints of the human body.

[0004] It is evident that this solution achieves calf massage by inflating and deflating airbags, which is relatively simple in function and cannot meet more needs. The massage experience is still not perfect. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an eccentric wheel structure for the hip twisting function of the calf, which can provide a hip twisting function while massaging the calf.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a calf hip-twisting drive structure, comprising a connecting shaft, a calf support rotatably connected to the connecting shaft, and a swing assembly connected to the calf support; the swing assembly includes a driver, an eccentric connector, a connecting seat, and a swing arm; the driver is mounted on the connecting seat, and the connecting seat is connected to the connecting shaft; the eccentric connector is mounted on the output shaft of the driver, the eccentric connector is connected to the swing arm, and the swing arm is rotatably connected to the calf support; the driver drives the eccentric connector to rotate eccentrically, and drives the calf support to reciprocate on the connecting shaft through the swing arm.

[0007] As a further improvement of this utility model, the lower leg support is provided with a connecting rod for cooperating with the rotational connection of the swing arm.

[0008] As a further improvement of this utility model, a strip-shaped hole is provided at the position where the swing arm connects to the connecting rod, and the connecting rod is located in the strip-shaped hole. The swing arm swings with the lower leg support through the eccentric connector, and the connecting rod moves in the strip-shaped hole.

[0009] As a further improvement of this utility model, the swing arm includes a connecting part, a first connecting arm and a second connecting arm both fixed on the connecting part. The connecting part is used to connect with an eccentric connector. The first connecting arm and the second connecting arm are located on both sides of the connecting part, corresponding to the sides or near the sides of the lower leg support. The lower leg support is provided with connecting rods at positions corresponding to the first connecting arm and the second connecting arm. The first connecting arm and the corresponding connecting rod are provided with connecting holes, the shape of which is adapted to the connecting rod. The strip hole is located on the second connecting arm, and the second connecting arm is connected to the corresponding connecting rod through the strip hole.

[0010] As a further improvement of this utility model, the eccentric connector is disc-shaped, and the disc-shaped eccentric connector is rotatably connected to the connecting part.

[0011] As a further improvement of this utility model, the connecting part is provided with a mounting groove whose shape is adapted to the eccentric connector, and the eccentric connector is located in the mounting groove and can rotate relative to the inner wall of the mounting groove.

[0012] As a further improvement of this utility model, the connecting seat is provided with a groove at the position corresponding to the connecting shaft, and the groove is adapted to the connecting shaft for the connecting shaft to enter and abut against the groove.

[0013] As a further improvement of this utility model, a rotating sleeve is coaxially connected to the connecting shaft, and the lower leg bracket is connected to the rotating sleeve to rotate on the connecting shaft.

[0014] As a further improvement of this utility model, an annular groove extending along the circumference of the connecting rod is provided on the side of the connecting rod corresponding to the two sides of the swing arm. A limiting component is installed in the annular groove, and the swing arm is restricted in its movement in the axial direction of the connecting rod by the limiting component.

[0015] A massage chair includes a seat body on which a hip-twisting drive structure for the lower leg is provided as described in any of the above improvements.

[0016] The beneficial effects of this utility model are that it can achieve the left and right rotation and swinging effect of the calf support through a simple structure without significantly increasing costs, providing a calf twisting and stretching experience and increasing the massage effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a three-dimensional structural diagram of the back of the present invention;

[0020] Figure 4 for Figure 2 Enlarged diagram of part A in the diagram;

[0021] Figure 5 for Figure 3 Enlarged schematic diagram of part B in the diagram;

[0022] Figure 6 for Figure 3 Enlarged schematic diagram of part C in the diagram.

[0023] Reference numerals: 1. Connecting shaft; 2. Lower leg support; 3. Swing assembly; 31. Driver; 32. Eccentric connector; 33. Connecting seat; 331. Groove; 34. Swing arm; 341. Connecting part; 3411. Mounting slot; 342. First connecting arm; 343. Second connecting arm; 35. Strip hole; 36. Connecting hole; 4. Connecting rod; 5. Rotating sleeve; 6. Annular groove. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0025] Reference Figure 1-6 As shown,

[0026] A calf hip-twisting drive structure includes a connecting shaft 1, a calf support 2 rotatably connected to the connecting shaft 1, and a swing assembly 3 connected to the calf support 2. The swing assembly 3 includes a driver 31, an eccentric connector 32, a connecting seat 33, and a swing arm 34. The driver 31 is mounted on the connecting seat 33, and the connecting seat 33 is connected to the connecting shaft 1. The eccentric connector 32 is mounted on the output shaft of the driver 31, and the eccentric connector 32 is connected to the swing arm 34, and the swing arm 34 is rotatably connected to the calf support 2. The driver 31 drives the eccentric connector 32 to rotate eccentrically, and drives the calf support 2 to reciprocate on the connecting shaft 1 through the swing arm 34.

[0027] The connecting shaft 1 is used to connect and support the external parts, and provides the lower leg bracket 2 with a swing shaft. Specifically, as shown in the figure, the connecting shaft 1 is connected to another bracket, and the bracket can be installed on the seat by flipping up and down.

[0028] During operation, the driver 31 generates eccentric rotation through the eccentric connector 32. This eccentric rotation drives the swing arm 34 to produce a swaying motion, which is then transmitted to the calf support 2. Under the drive of the swing arm 34, the calf support 2 generates a swaying motion that rotates repeatedly, which in turn, combined with the swinging of the legs, produces a hip-twisting motion, further providing a massage experience such as hip-twisting and stretching.

[0029] The connector 33 can be used to increase the stability of the driver 31.

[0030] In this solution, the driver 31 only needs to cooperate with the eccentric connector 32 and the swing arm 34 to make the lower leg support 2 swing and twist. It is simple in structure and low in cost.

[0031] In one embodiment that facilitates the connection of the swing arm 34, the lower leg bracket 2 is provided with a connecting rod 4 for cooperating with the swing arm 34 for rotational connection.

[0032] As shown in the figure, the connecting rod 4 can be installed on the lower leg bracket 2 using two connecting parts 341. The connecting rod 4 can be pre-installed with the swing arm 34 during production, and then the two connecting parts 341 can be installed with the lower leg bracket 2, which can achieve quick installation.

[0033] The fact that the lower leg support 2 is equipped with a connecting rod 4 in this solution does not mean that the connecting rod 4 is installed with the lower leg support 2 first and then the swing arm 34 is installed with the connecting rod 4, nor does it mean that the connecting rod 4 and the lower leg support 2 are an integral structure.

[0034] In a further configuration, a strip-shaped hole 35 is provided at the position where the swing arm 34 connects to the connecting rod 4, and the connecting rod 4 is located in the strip-shaped hole 35. The swing arm 34 swings with the lower leg bracket 2 through the eccentric connector 32, and the connecting rod 4 moves within the strip-shaped hole 35.

[0035] Since the swing arm 34 will have a certain displacement in the length direction relative to the swing arm 34 when it swings through the eccentric connector 32, the setting of the strip hole 35 can provide the connecting rod 4 with a certain amount of room for movement when the swing arm 34 swings, thereby overcoming the displacement problem of the swing arm 34 and making the swinging action smoother.

[0036] To make the swing of the calf support 2 more stable, in one optional embodiment, the swing arm 34 includes a connecting part 341, a first connecting arm 342 and a second connecting arm 343 both fixed on the connecting part 341. The connecting part 341 is used to connect with the eccentric connector 32. The first connecting arm 342 and the second connecting arm 343 are respectively located on both sides of the connecting part 341 and correspond to the two sides or near the two sides of the calf support 2. A connecting rod 4 is provided on the calf support 2 at the positions corresponding to the first connecting arm 342 and the second connecting arm 343. A connecting hole 36 is provided at the positions of the first connecting arm 342 and the corresponding connecting rod 4. The shape of the connecting hole 36 is adapted to the connecting rod 4. A strip hole 35 is located on the second connecting arm 343, and the second connecting arm 343 is connected to the corresponding connecting rod 4 through the strip hole 35.

[0037] In this design, the swing arm 34 is divided into a first connecting arm 342 and a second connecting arm 343, which correspond to the positions on both sides of the lower leg support 2, respectively. The connecting part 341 is used to connect the first connecting arm 342 and the second connecting arm 343 with the eccentric connector 32. The two connecting arms work together to make the swing of the lower leg support 2 more stable, both sides of the lower leg support 2 can be supported, and the service life can be increased by distributing the pressure from the lower leg.

[0038] In this design, the connecting hole 36 on the first connecting arm 342 is adapted to the shape of the corresponding connecting rod 4 for rotational engagement. The strip-shaped hole 35 on the second connecting arm 343 is designed to provide a certain amount of movement space for the corresponding connecting rod 4, allowing for rotation and oscillation. If the hole connecting the second connecting arm 343 to the connecting rod 4 is also adapted to the shape of the connecting rod 4, the lower leg support 2 will be unable to rotate, only able to perform translational oscillation, unable to produce a hip-twisting effect, and may even jam with the connecting shaft 1, preventing normal operation. This solution, through the simple setting of the strip-shaped hole 35, is low-cost and easy to install, effectively solving this problem.

[0039] Since the position of the connecting shaft 1 is relatively fixed, the position of the lower leg bracket 2 is also relatively fixed, which makes it difficult for the connecting part 341 to cooperate with the eccentric connector 32. In order to further reduce the difficulty of cooperation, an optional implementation scheme is provided below. The eccentric connector 32 is disc-shaped, and the disc-shaped eccentric connector 32 is rotatably connected to the connecting part 341.

[0040] The disc-shaped structure cooperates with the connecting part 341, allowing the edge of the disc to abut against the connecting part 341. At the same time, the contact surface can slide. When the eccentric connector 32 rotates eccentrically, the edge of the eccentric connector 32 can generate a pushing force. This pushing force acts on the connecting part 341 and the first connecting arm 342, causing the lower leg support 2 to rotate and swing.

[0041] The disc-shaped structure allows for smoother edges, resulting in a more seamless fit between the edge surface of the eccentric connector 32 and the connector 341.

[0042] In a further configuration, the connecting part 341 is provided with a mounting groove 3411 whose shape is adapted to the eccentric connector 32, and the eccentric connector 32 is located in the mounting groove 3411 and can rotate relative to the inner wall of the mounting groove 3411.

[0043] The shape of the mounting groove 3411 is adapted to the eccentric connector 32. It can be circular, allowing the eccentric connector 32 to be inserted and form a rotational fit. When the driver 31 drives the eccentric connector 32 to rotate, the eccentric connector 32 will rotate in the mounting groove 3411. At the same time, due to the eccentric effect, a certain pushing and pulling effect will be generated, causing the connecting part 341 to rotate and swing along with the first connecting arm 342 and the second connecting arm 343.

[0044] Furthermore, installing the eccentric connector 32 in the mounting slot 3411 improves the stability of the fit between the two and makes installation more convenient.

[0045] Furthermore, the connecting seat 33 is provided with a groove 331 corresponding to the position of the connecting shaft 1, and the groove 331 is adapted to the connecting shaft 1 for the connecting shaft 1 to enter and abut against the groove 331.

[0046] The groove 331 and the connecting shaft 1 can form a positioning function. The position of the connecting seat 33 corresponding to the groove 331 can be made of metal and can be welded to the connecting shaft 1. Of course, it can also be implemented by simply abutting. Since the first connecting arm 342 and the second connecting arm 343 are connected to the connecting rod 4, and the connecting rod 4 is fixed to the lower leg bracket 2, it means that when the connecting part 341 cooperates with the eccentric connecting part 32, the groove 331 of the connecting seat 33 will maintain an abutting fit with the connecting shaft 1. The assembly state of this solution can make the connecting seat 33 stably abut against the connecting shaft 1, so that the connecting seat 33 is in a relatively stable state.

[0047] In a further configuration, a rotating sleeve 5 is coaxially connected to the connecting shaft 1, and the lower leg bracket 2 is connected to the rotating sleeve 5 so as to rotate on the connecting shaft 1.

[0048] The rotating sleeve 5 can be implemented using a bearing housing, which is installed on the lower leg bracket 2 and connected to the connecting shaft 1 through an internal bearing, making the rotation smoother.

[0049] Of course, the rotating sleeve 5 can also be made of a wear-resistant outer sleeve, which can increase the rotational life between the lower leg support 2 and the connecting shaft 1 and make it more wear-resistant.

[0050] To facilitate installation and ensure the stability of the connection between the swing arm 34 and the swing arm 34, annular grooves 6 extending circumferentially along the side of the connecting rod 4 are provided on the side corresponding to the two sides of the swing arm 34. Limiting components are installed in the annular grooves 6, and the swing arm 34 is restricted in its movement in the axial direction of the connecting rod 4 by the limiting components.

[0051] The annular groove 6 can be used as a slot, and the limiting component can be a retaining spring. It can be installed in conjunction with the retaining spring, so that the position of the swing arm 34 is in a relatively stable state on the connecting rod 4, and will not be offset along the axial direction of the connecting rod 4, making the cooperation between the two more stable.

[0052] The above-described solution is a calf-hip twisting drive structure, which can be applied to medical beds or medical chairs. This solution also applies it to massage chairs, creating a massage chair with the aforementioned calf-hip twisting drive structure. Massage chairs generally have a seat body and a calf assembly connected to the seat body that can be tilted up and down. The calf assembly has a calf support 2. Combined with the aforementioned calf-hip twisting drive structure, the calf support 2 can generate a hip-twisting and stretching effect, thereby optimizing the massage chair structure.

[0053] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected by this utility model. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A structure for driving hip twisting in the lower leg, characterized in that, The device includes a connecting shaft, a rotatable lower leg support connected to the connecting shaft, and a swing assembly connected to the lower leg support. The swing assembly includes a driver, an eccentric connector, a connecting seat, and a swing arm. The driver is mounted on the connecting seat, and the connecting seat is connected to the connecting shaft. The eccentric connector is mounted on the output shaft of the driver and is connected to the swing arm, which is rotatably connected to the lower leg support. The driver drives the eccentric connector to rotate eccentrically, and the swing arm drives the lower leg support to reciprocate on the connecting shaft.

2. The calf-hip twisting drive structure according to claim 1, characterized in that, The lower leg support is equipped with a connecting rod for cooperating with the rotation connection of the swing arm.

3. The calf-hip twisting drive structure according to claim 2, characterized in that, The swing arm is provided with a strip-shaped hole at the connection position with the connecting rod, and the connecting rod is located in the strip-shaped hole. The swing arm swings with the lower leg support through the eccentric connector, and the connecting rod moves in the strip-shaped hole.

4. The calf-hip twisting drive structure according to claim 3, characterized in that, The swing arm includes a connecting part, a first connecting arm and a second connecting arm both fixed to the connecting part. The connecting part is used to connect with an eccentric connector. The first connecting arm and the second connecting arm are located on both sides of the connecting part, corresponding to or near the sides of the lower leg support. The lower leg support is provided with connecting rods at positions corresponding to the first connecting arm and the second connecting arm. The first connecting arm and the corresponding connecting rod are provided with connecting holes, the shape of which is adapted to the connecting rod. The strip hole is located on the second connecting arm, and the second connecting arm is connected to the corresponding connecting rod through the strip hole.

5. The calf-hip twisting drive structure according to any one of claims 1 to 4, characterized in that, The eccentric connector is disc-shaped, and the disc-shaped eccentric connector is rotatably connected to the connecting part.

6. The calf-hip twisting drive structure according to claim 5, characterized in that, The connecting part is provided with a mounting groove whose shape is adapted to the eccentric connector, and the eccentric connector is located in the mounting groove and can rotate relative to the inner wall of the mounting groove.

7. The calf-hip twisting drive structure according to any one of claims 1 to 4, characterized in that, The connector has a groove at the position corresponding to the connecting shaft, and the groove is adapted to the connecting shaft so that the connecting shaft can enter and abut against the groove.

8. The calf-hip twisting drive structure according to any one of claims 1 to 4, characterized in that, A rotating sleeve is coaxially connected to the connecting shaft, and the lower leg bracket is connected to the rotating sleeve to rotate on the connecting shaft.

9. The calf-hip twisting drive structure according to any one of claims 2 to 4, characterized in that, The connecting rod has an annular groove extending circumferentially along its side, corresponding to the two sides of the swing arm. A limiting component is installed in the annular groove, and the swing arm's movement is restricted in the axial direction of the connecting rod by the limiting component.

10. A massage chair, characterized in that, It includes a seat body, on which a hip-twisting drive structure for the lower leg is provided as described in any one of claims 1 to 9.

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