Electric massage chair based on face gear transmission

Abstract

The invention provides an electric massage chair based on face gear transmission, the electric massage chair comprises a chair back and a chair seat, curve guide rails are arranged on two opposite side faces of the chair back, a massage structure is arranged in the chair back, the massage structure comprises a lead screw, a movement driving mechanism used for driving the lead screw to rotate and a massage mechanism mounted on the lead screw, and the lead screw is connected with the massage mechanism. Under the action of the movable driving mechanism, the lead screw can rotate to drive the massage mechanism to move up and down; the massage mechanism comprises a lead screw nut, a supporting frame, a movable face gear, a movable driven wheel, a massage driving assembly, a flexible shaft and at least one flexible cam installed on the flexible shaft. The massage driving assembly can drive the movable face gear to rotate so as to drive the movable driven wheel and the flexible shaft to rotate, and in the rotating process of the flexible shaft, the flexible cam can massage the human body. The massage chair is simple in structure, the massage force increases from small to large, the massage chair can adapt to different body states and is closer to the hand massage feeling, and the multi-point massage function can be easily achieved.

Description

Technical Field

[0001] The invention relates to the technical field of massage chairs, in particular to an electric massage chair based on face gear transmission. Background Art

[0002] Face gear transmission is an angular transmission form widely used in aerospace, engineering machinery, precision transmission, general reduction gearbox and other fields. It has the advantages of large transmission ratio, high overlap, smooth transmission, high load capacity, and insensitivity to axial installation errors of pinion gears. Face gear transmission has extremely excellent split transmission performance, that is, it can mesh transmission of multiple pinions at the same time without complicated structural design and installation adjustment.

[0003] As part of modern health appliances, electric massage chairs are increasingly favored by consumers due to their convenience and versatility. Its main advantage is that it can provide a variety of massage techniques (such as kneading, tapping, pushing, etc.) to relieve muscle fatigue and relax the body and mind, and is usually equipped with functions such as heating, airbag massage and zero gravity mode to further enhance comfort and massage effect. In addition, users can enjoy massage at home or in the office at any time without going to a massage parlor or physiotherapy center, saving time and cost.

[0004] However, the current electric massage chairs also have some disadvantages, such as complex structures, high difficulty in processing and assembly, high processing costs, and difficult maintenance. For example, the Chinese patent with publication number CN116942497B discloses a massage chair with a flexible guide rail structure and a method of use, which uses a gear rack structure to achieve the up and down movement of the massage head. Although the position of the massage head can be accurately controlled, the overall processing cost is high, maintenance is difficult, and lubricating oil needs to be added regularly. The massage head adopts a roller method, and its pressure is fixed, which cannot simulate the real manual massage action, so the massage effect is poor, and the overall massage head structure is complex, requiring multiple drive devices, high cost, and difficult maintenance. Summary of the invention

[0005] The invention provides an electric massage chair based on face gear transmission to solve the shortcomings of the existing electric massage chair, such as complex structure, poor massage effect and difficult maintenance.

[0006] In order to achieve the above object, the specific scheme adopted by the present invention is: An electric massage chair based on face gear transmission, comprising a chair body consisting of a chair back and a chair seat, wherein two opposite sides of the chair back are provided with curved guide rails, and a massage structure capable of moving along the curved guide rails is provided inside the chair back, wherein the massage structure comprises a lead screw arranged in the up-down direction and having the same inclination angle as the chair back, a moving drive mechanism arranged at the end of the lead screw for driving the lead screw to rotate, and a massage mechanism installed on the lead screw, wherein the lead screw can rotate under the action of the moving drive mechanism, thereby driving the massage mechanism to move up and down; The massage mechanism includes a lead screw nut installed on a lead screw, a support frame is fixedly installed on the lead screw nut, the support frame includes a cross bar extending in the left-right direction and connected to the lead screw nut, and a longitudinal bar extending in the front-back direction and connected to the left end of the cross bar in the middle, a moving face gear is rotatably connected to the cross bar, both ends of the longitudinal bar are provided with moving driven wheels meshing with the moving face gear, both moving driven wheels are connected with flexible shafts, one end of the flexible shaft away from the moving driven wheel is clamped in the curved guide rail on the corresponding side, and at least one flexible cam is installed on the flexible shaft; a massage driving assembly is also provided on the support frame, the massage driving assembly can drive the moving face gear to rotate, thereby driving the moving driven wheel and the flexible shaft to rotate, and during the rotation of the flexible shaft, the flexible cam can massage the human body.

[0007] Furthermore, the mobile driving mechanism includes a driving face gear connected to the end of the lead screw, at least one driving active wheel meshing with the driving face gear, and at least one first driving motor fixed to the chair back for providing power to the driving active wheel.

[0008] Furthermore, the massage drive assembly includes a second drive motor and a massage drive gear connected to the second drive motor, and the massage drive gear is meshed with the moving surface gear.

[0009] Furthermore, the left end surface of the chair back is a curved surface.

[0010] Furthermore, the flexible cam is made of soft material.

[0011] Furthermore, the flexible cam is made of rubber or plastic.

[0012] Furthermore, the screw is a ball screw, a trapezoidal screw or a planetary roller screw.

[0013] Beneficial effects: (1) The massage structure of the present invention comprises a lead screw, a moving drive mechanism for driving the lead screw to rotate, and a massage mechanism. Under the action of the moving drive mechanism, the lead screw can rotate, thereby driving the massage mechanism to move up and down, thereby being able to massage the upper and lower positions of the back of the human body. The overall structure of the massage structure is simple and easy to manufacture and assemble.

[0014] (2) The present invention adopts face gear transmission technology, which is easy to install and adjust, and does not require special positioning support.

[0015] (3) The present invention can provide a flexible massage feel, with massage intensity ranging from small to large, and can adapt to different body conditions, which is closer to the massage feeling of human hands.

[0016] (4) The present invention can easily realize a multi-point massage function by arranging a plurality of flexible cams on the flexible shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the axonometric view of an electric massage chair.

[0018] Figure 2 A schematic diagram of a seat body.

[0019] Figure 3 A schematic diagram of a massage structure.

[0020] Figure 4 A schematic diagram of a massage mechanism.

[0021] Figure 5 Schematic diagram of the mobile drive mechanism.

[0022] Figure 6 Schematic diagram of the screw nut and support frame.

[0023] Figure 7 It is a schematic diagram of a flexible shaft and a flexible cam.

[0024] Graphic marking: 1. seat body, 11. seat back, 111. curved guide rail, 12. seat; 2. massage mechanism, 21. lead screw nut, 22. support frame, 221. cross bar, 222. longitudinal bar, 223. motor bracket, 23. moving face gear, 24. moving driven wheel, 25. massage driving gear, 26. second driving motor, 27. flexible shaft, 28. flexible cam; 3. Lead screw; 4. Mobile driving mechanism, 41. Driving face gear, 42. First driving motor, 43. Driving driving wheel. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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.

[0026] In the description of the present invention, it is necessary to understand that the terms "upper" and "lower" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0027] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0028] The present invention provides an electric massage chair based on face gear transmission, such as Figure 1-7 As shown, the massage chair includes a seat body 1 and a massage structure arranged in the seat body 1, through which the back of the human body can be massaged. Each mechanism is described in detail below.

[0029] <Seat body 1> Please refer to Figure 2 The chair body 1 includes a backrest 11 and a seat 12. The backrest 11 is a hollow box-shaped structure. Curved guide rails 111 are provided on both the front and rear sides of the backrest 11. The curved guide rails 111 are provided with grooves. When a user sits on the seat 12 and leans against the backrest 11, the massage structure provided inside the backrest 11 can massage the back of the human body when powered on.

[0030] Preferably, the left end surface of the chair back 11 is designed as an S-shaped curve, which can fit the back of the human body to achieve the best massage effect.

[0031] <Massage structure> Please refer to Figure 3 The massage structure includes a screw 3 arranged in the up and down direction and having the same inclination angle as the chair back 11, a moving drive mechanism 4 arranged at the end of the screw 3 for driving the screw 3 to rotate, and a massage mechanism 2 installed on the screw 3. Under the action of the moving drive mechanism 4, the screw 3 can rotate, thereby driving the massage mechanism 2 to move up and down.

[0032] Please refer to Figure 5The mobile driving mechanism 4 is arranged at the lower end of the lead screw 3, and includes a driving face gear 41, a first driving motor 42 and a driving driving wheel 43, wherein the first driving motor 42 is connected to the driving driving wheel 43, and the first driving motor 42 and the driving driving wheel 43 are provided with at least one set. The driving driving wheel 43 is meshed with the driving face gear 41. The driving face gear 41 is connected to one end of the lead screw 3, and the driving face gear 41 can drive the lead screw 3 to rotate.

[0033] The massage mechanism 2 includes a lead screw nut 21, a support frame 22, a moving face gear 23, a moving driven wheel 24, and a massage drive assembly.

[0034] The lead screw nut 21 is disposed on the lead screw 3 , and when the lead screw 3 rotates, the lead screw nut 21 can move linearly along the axis of the lead screw 3 .

[0035] Please refer to Figure 6 The support frame 22 includes a cross bar 221 extending in the left-right direction and connected to the lead screw nut 21 at the right end, a longitudinal bar 222 extending in the front-back direction and connected to the left end of the cross bar 221 in the middle, and an L-shaped motor bracket 223 connected to the cross bar 221. The cross bar 221 is rotatably connected to the moving face gear 23, and both ends of the longitudinal bar 222 are provided with moving driven wheels 24 meshing with the moving face gear 23. Both moving driven wheels 24 are connected with flexible shafts 27, and one end of the flexible shaft 27 away from the moving driven wheel 24 is clamped in the groove of the curved guide rail 111 on the corresponding side, and at least one flexible cam 28 is installed on the flexible shaft 27; the motor bracket 223 is also provided with a massage driving assembly, which can drive the moving face gear 23 to rotate, thereby driving the moving driven wheel 24 and the flexible shaft 27 to rotate, and during the rotation of the flexible shaft 27, the flexible cam 28 can massage the back of the human body.

[0036] Specifically, Figure 4 As shown, the massage drive assembly includes a second drive motor 26 and a massage drive gear 25, wherein the massage drive gear 25 is meshed with the moving surface gear 23. The massage drive gear 25 is meshed with the moving surface gear 23 and can drive the moving surface gear 23 to rotate.

[0037] Specifically, the flexible cams 28 are made of soft materials, such as plastic, rubber, etc. The flexible shaft 27 is made of plastic.

[0038] The working process of the electric massage chair in the present invention is as follows: When the electric massage chair is working, it is necessary to first connect an external power source or provide power from a battery to drive the first drive motor 42 to rotate, and the first drive motor 42 drives the driving driving wheel 43 to rotate, and then drives the driving driving wheel 43 to drive the driving face gear 41 in the mobile drive mechanism 4 to rotate, and the driving face gear 41 drives the lead screw 3 to rotate. The massage mechanism 2 is provided with a lead screw nut 21, and the lead screw nut 21 is arranged on the lead screw 3. Since the massage mechanism 2 cannot rotate, when the lead screw 3 rotates, the lead screw nut 21 can only move linearly along the axis of the lead screw 3, which realizes the overall up and down movement of the massage mechanism 2 along the axis of the lead screw 3, that is, the up and down movement of the massage position is realized, and a better massage effect is achieved. The second drive motor 26 is connected to the lead screw nut 21 through the motor bracket 223. The second drive motor 26 is driven by electric energy to rotate, and then drives the massage drive gear 25 to rotate, and through the meshing relationship, it can drive the mobile face gear 23 to rotate. The mobile driven wheel 24 is arranged at both ends of the longitudinal rod 222 in the support frame 22, and is meshed with the mobile face gear 23 at the same time. When the mobile face gear 23 rotates, the mobile driven wheel 24 can be driven to rotate. The mobile driven wheel 24 is respectively connected to one end of a flexible shaft 27. When the mobile driven wheel 24 rotates, the flexible shaft 27 can be driven to rotate. The other end of the flexible shaft 27 is arranged in the groove of the curved guide rail 111, and can move up and down along the groove of the curved guide rail 111. The flexible cam 28 is arranged on the flexible shaft 27 and can rotate synchronously with the flexible shaft 27. When the flexible shaft 27 rotates, the protruding height of the flexible cam 28 changes from small to large and then to small, which can simulate the effect of manual massage. During the operation of the massage mechanism 2, the lead screw 3 drives the massage mechanism 2 to move up and down, realizes the overall massage of the human back, and can achieve the best massage effect. By arranging multiple flexible cams 28 on the flexible shaft 27, it is easy to achieve simultaneous massage of multiple massage points, and the massage effect is better.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any equivalent changes or modifications made according to the essence of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric massage chair based on face gear transmission, characterized in that: The invention comprises a chair body (1) consisting of a chair back (11) and a chair seat (12), wherein two opposite side surfaces of the chair back (11) are provided with curved guide rails (111), and the interior of the chair back (11) is provided with a massage structure capable of moving along the curved guide rails (111), wherein the massage structure comprises a lead screw (3) arranged in the up-down direction and having the same inclination angle as the chair back (11), a moving drive mechanism (4) arranged at the end of the lead screw (3) for driving the lead screw (3) to rotate, and a massage mechanism (2) mounted on the lead screw (3), wherein the lead screw (3) can rotate under the action of the moving drive mechanism (4), thereby driving the massage mechanism (2) to move up and down; The massage mechanism (2) comprises a lead screw nut (21) mounted on a lead screw (3); a support frame (22) is fixedly mounted on the lead screw nut (21); the support frame (22) comprises a cross bar (221) extending in the left-right direction and connected to the lead screw nut (21); and a longitudinal bar (222) extending in the front-back direction and connected in the middle to the left end of the cross bar (221); a moving face gear (23) is rotatably connected to the cross bar (221); and both ends of the longitudinal bar (222) are provided with a moving driven wheel (24) meshing with the moving face gear (23). ), the two movable driven wheels (24) are both connected to a flexible shaft (27), one end of the flexible shaft (27) away from the movable driven wheel (24) is clamped in the curved guide rail (111) on the corresponding side, and at least one flexible cam (28) is installed on the flexible shaft (27); the support frame (22) is also provided with a massage drive component, the massage drive component can drive the movable face gear (23) to rotate, thereby driving the movable driven wheel (24) and the flexible shaft (27) to rotate, and during the rotation of the flexible shaft (27), the flexible cam (28) can massage the back of the human body.

2. The electric massage chair based on face gear transmission according to claim 1, characterized in that: The mobile drive mechanism (4) comprises a driving face gear (41) connected to the end of the lead screw (3), at least one driving active wheel (43) meshing with the driving face gear (41), and at least one first driving motor (42) fixed to the chair back (11) for providing power to the driving active wheel (43).

3. The electric massage chair based on face gear transmission according to claim 1, characterized in that: The massage drive assembly comprises a second drive motor (26) and a massage drive gear (25) connected to the second drive motor (26), and the massage drive gear (25) is meshed with the moving surface gear (23).

4. The electric massage chair based on face gear transmission according to claim 1, characterized in that: The left end surface of the chair back (11) is a curved surface.

5. The electric massage chair based on face gear transmission according to claim 1, characterized in that: The flexible cam (28) is made of soft material.

6. The electric massage chair based on face gear transmission according to claim 5, characterized in that: The material of the flexible cam (28) is rubber or plastic.

7. The electric massage chair based on face gear transmission according to claim 1, characterized in that: The lead screw (3) is a ball screw, a trapezoidal lead screw or a planetary roller screw.

Images