Angle-adjustable massage chair movement mechanism

Abstract

The application discloses an angle-adjustable massage chair core walking mechanism and relates to the technical field of massage chairs. The angle-adjustable massage chair core walking mechanism comprises an upper guide rail frame, a lower guide rail frame, a core, a push rod, a rack and a limiting pin assembly. The upper guide rail frame and the lower guide rail frame are fixed and movably hinged on a shaft a through sheet metal or plastic parts. The upper guide rail frame is hinged with one end of the push rod, and the lower guide rail frame is hinged with the other end of the push rod. The upper guide rail frame, the lower guide rail frame and the push rod form a set of movement mechanism. The upper guide rail frame and the lower guide rail frame are rotated around the shaft a to realize angle adjustment and change through the extension and contraction of the push rod or the movement of other external mechanisms. The application has the advantages of simple and direct structure, stability and reliability, low cost and better comfort.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of massage chairs, in particular to a massage chair core walking mechanism with adjustable angle. BACKGROUND

[0002] Patent application No. 202120063417.8 discloses a seat and back angle deployable forward moving zero gravity linkage massage chair frame, which comprises a bottom seat frame, a front support frame, a rear support frame, a backrest frame, a movable seat frame, a seat frame linkage rod and a backrest swinging mechanism. The bottom seat frame, the front support frame, the rear support frame and the backrest frame form a four-bar linkage mechanism. One end of the movable seat frame is hingedly connected to the rear support frame or the backrest frame. One end of the seat frame linkage rod is hingedly connected to the other end of the movable seat frame, and the other end of the seat frame linkage rod is hingedly connected to the front support frame. The backrest swinging mechanism pushes the backrest frame to swing, and at the same time, the seat frame linkage rod pushes the movable seat frame to swing. The backrest frame swinging completes the zero gravity adjustment, and at the same time, the seat frame moves forward, so that the person can not be uncomfortable in a sitting position when lying down for massage, and the massage is more comfortable and relaxed. However, the guide rail backrest section and the seat section of the core movement are a fixed whole, the included angle of the core movement is always fixed, and the actual experience effect is limited. How to improve the deficiencies of the prior art has become the object of the present application. SUMMARY

[0003] Therefore, the present application provides a massage chair core walking mechanism with adjustable angle to solve the problem that the included angle of the guide rail backrest section and the seat section of the core movement is always fixed in the prior art, and the included angle of the backrest section and the seat section cannot be changed.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] According to the first aspect of the present application, a massage chair core walking mechanism with adjustable angle comprises an upper guide rail frame, a lower guide rail frame, a core, a push rod and a shaft. The upper guide rail frame and the lower guide rail frame are fixed and hingedly connected to the shaft by sheet metal or plastic parts. One end of the push rod is hingedly connected to the upper guide rail frame, and the other end of the push rod is hingedly connected to the lower guide rail frame. The upper guide rail frame and the lower guide rail frame are both provided with a core roller walking groove for providing the core walking. The rotation of the upper guide rail frame and the lower guide rail frame around the shaft is realized by the extension and retraction of the push rod to realize the angle adjustment change.

[0006] Further, the core roller walking groove of the upper guide rail frame and the lower guide rail frame is a U-shaped groove.

[0007] Further, the upper guide rail frame is provided with a continuous rack on the core roller walking groove, and a set of driving wheels, walking gears and driven wheels are arranged on the upper and lower sides of the core respectively, the driving wheels and the walking gears are arranged side by side at one end of the core, and the driven wheels are arranged at the other end of the core, and the walking gears are in meshing transmission with the rack.

[0008] Further, the driving wheels and the driven wheels are identical in structure size and shape.

[0009] Further, the upper guide rail frame is provided with a continuous rack on the core roller walking groove, and a set of driving wheels, walking gears and driven wheels are arranged on the upper and lower sides of the core respectively, the driving wheels and the walking gears are arranged side by side at one end of the core, and the driven wheels are arranged at the other end of the core, and the walking gears are in meshing transmission with the rack.

[0010] At the arc segment of the upper guide rail frame rotating around the shaft, the upper guide rail frame has two convex structures and one concave structure, the convex structure of the upper guide rail frame is provided with a round hole, and the concave structure of the upper guide rail frame is provided with an oblong hole.

[0011] At the arc segment of the lower guide rail frame rotating around the shaft, the lower guide rail frame has one convex structure and two concave structures, the convex structure of the lower guide rail frame is provided with a round hole, and the concave structure of the lower guide rail frame is provided with an oblong hole.

[0012] The convex structure of the upper guide rail frame is cross matched with the concave structure of the lower guide rail frame, and is connected through the limiting pin assembly.

[0013] The concave structure of the upper guide rail frame is cross matched with the convex structure of the lower guide rail frame, and is connected through the limiting pin assembly.

[0014] Further, the curvature center of the rotation of the limiting pin assembly is located at the shaft, and the limiting pin assembly and the round hole and the oblong hole matched therewith rotate around the shaft.

[0015] Further, the core roller walking groove of the upper guide rail frame and the core roller walking groove of the lower guide rail frame are continuously and smoothly connected at the arc segment around the shaft, and the core roller walking groove of the upper guide rail frame and the core roller walking groove of the lower guide rail frame form a complete and smooth curved walking groove.

[0016] Further, when the convex structure and the concave structure of the upper guide rail frame and the lower guide rail frame are in the minimum overlap state of rotating around the shaft, the rollers of the core are supported by the convex structure of the upper guide rail frame and the concave structure of the lower guide rail frame respectively when walking at the transition segment of the upper guide rail frame and the lower guide rail frame.

[0017] When the convex structure and the concave structure of the upper guide rail frame and the lower guide rail frame are maximally overlapped in the rotating state around the shaft, the rollers of the core are supported by the convex structure of the upper guide rail frame and the concave structure of the lower guide rail frame at the same time when walking in the transition section from the upper guide rail frame to the lower guide rail frame.

[0018] When the convex structure and the concave structure of the upper guide rail frame and the lower guide rail frame are maximally overlapped in the rotating state around the shaft, the rollers of the core are supported by the convex structure of the upper guide rail frame and the concave structure of the lower guide rail frame at the same time when walking in the transition section from the upper guide rail frame to the lower guide rail frame.

[0019] Further, when the push rod is retracted, the angle of the upper guide rail frame and the lower guide rail frame is continuously increased, so that the included angle between the two is increased.

[0020] When the push rod is pushed out, the angle of the upper guide rail frame and the lower guide rail frame is continuously decreased, so that the included angle between the two is decreased.

[0021] Further, the push rod is any one of an electric push rod, a hydraulic cylinder or a pneumatic cylinder.

[0022] The present application has the following advantages:

[0023] 1. The included angle between the seat and the backrest can be adjusted, and the massage comfort is high.

[0024] 2. The driving wheel, the walking gear and the driven wheel have the same motion trajectory in the upper and lower guide rail grooves, the driving wheel and the driven wheel can be made into wheels with the same structure size, and the structure is simple, direct, highly universal and low in cost.

[0025] 3. In the angle adjustment movement and the core walking operation, all parameters of the walking gear and the rack meet the gear meshing transmission.

[0026] 4. The movement of the driving wheel, the walking gear and the driven wheel in the core roller walking groove and the trajectory thereof are always in a smooth running state. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0028] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions that can be implemented by the application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the application, should still fall within the scope of the technical content disclosed by the application.

[0029] Figure 1 An initial state side view of a massage chair core walking mechanism with adjustable angle provided by the application is shown in the figure.

[0030] Figure 2 An exploded view of a massage chair core walking mechanism with adjustable angle provided by the application is shown in the figure.

[0031] Figure 3 An initial state shaft side view of a massage chair core walking mechanism with adjustable angle provided by the application is shown in the figure.

[0032] Figure 4 A zero-gravity state side view of a massage chair core walking mechanism with adjustable angle provided by the application is shown in the figure.

[0033] Figure 5 A zero-gravity state shaft side view of a massage chair core walking mechanism with adjustable angle provided by the application is shown in the figure.

[0034] Figure 6 A schematic view of a massage chair core walking mechanism with adjustable angle provided by the application in the transition section is shown in the figure.

[0035] Figure 7 A cross-sectional view of a massage chair core walking mechanism with adjustable angle provided by the application around point a in the transition section is shown in the figure.

[0036] In the figure: 1, upper guide rail frame, 2, lower guide rail frame, 3, limit pin assembly, 4, push rod, 5, core, 51, driving wheel, 52, walking gear, 53, driven wheel, 6, rack, 7, core roller walking groove, a, shaft. DETAILED DESCRIPTION

[0037] The embodiments of the application are described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the application from the content disclosed in the specification. Obviously, the described examples are part of the examples of the application, not all examples. Based on the examples in the application, all other examples obtained by those skilled in the art without creative labor fall within the scope of the application.

[0038] As Figures 1 to 7As shown, an adjustable massage chair mechanism according to a first aspect embodiment of the present invention includes an upper guide rail frame 1, a lower guide rail frame 2, a massage mechanism 5, a push rod 4, and a shaft a. The upper guide rail frame 1 and the lower guide rail frame 2 are fixed and hinged to the shaft a by sheet metal or plastic parts. One end of the push rod 4 is hinged to the upper guide rail frame 1, and the other end of the push rod 4 is hinged to the lower guide rail frame 2. Both the upper guide rail frame 1 and the lower guide rail frame 2 are provided with a massage mechanism roller travel groove 7, which is used to provide the movement of the massage mechanism 5. The upper guide rail frame 1 and the lower guide rail frame 2 can be rotated around the shaft a by the extension and retraction of the push rod 4 to achieve angle adjustment.

[0039] In the above embodiments, it should be noted that the upper guide rail frame 1, the lower guide rail frame 2, and the push rod 4 form a motion mechanism; the upper guide rail frame 1 and the lower guide rail frame 2 can rotate around axis a to achieve angle adjustment and change through the extension and retraction of the push rod 4 or other external mechanisms.

[0040] The technical effects achieved by the above embodiments are as follows: the use of a single push rod 4 to achieve the angle change adjustment of the guide rail is reasonable and the drive is direct and reliable; secondly, the structure adopts a segmented guide rail design, which can truly realize the adjustment and change of the backrest and seat angles, resulting in a better experience of comfort.

[0041] Optional, such as Figures 1 to 7 As shown, in some embodiments, the movement roller grooves 7 of the upper guide rail frame 1 and the lower guide rail frame 2 are both U-shaped grooves.

[0042] In the above optional embodiments, it should be noted that the open end of the U-shaped groove of the movement roller travel groove 7 of the upper guide rail frame 1 and the open end of the U-shaped groove of the movement roller travel groove 7 of the lower guide rail frame 2 are directly opposite each other.

[0043] Optional, such as Figures 1 to 7 As shown, in some embodiments, it also includes a drive wheel 51, a travel gear 52, a driven wheel 53, and a rack 6. A continuous rack 6 is provided on the movement roller travel groove 7 of the upper guide frame 1. A set of drive wheels 51, travel gears 52, and driven wheels 53 are respectively provided on the upper and lower sides of the movement 5. The drive wheel 51 and the travel gear 52 are arranged side by side at one end of the movement 5, and the driven wheel 53 is located at the other end of the movement 5. The travel gear 52 meshes with the rack 6 for transmission.

[0044] In the above optional embodiments, it should be noted that both the upper guide rail frame 1 and the lower guide rail frame 2 are equipped with U-shaped movement roller travel grooves 7 for the movement's driving wheel 51 and driven wheel 53 to travel; the travel gear 52 and the rack 6 are meshed to provide the power for travel, and the movement trajectories of the driving wheel 51 and driven wheel 53 are the same trajectory within the movement roller travel groove 7.

[0045] Optional, such as Figures 1 to 7As shown, in some embodiments, the driving wheel 51 and the driven wheel 53 have completely identical structural dimensions and shapes.

[0046] In the above optional embodiments, it should be noted that the structural dimensions and shapes of the driving wheel 51 and the driven wheel 53 can also be set according to actual needs.

[0047] The advantages of the above optional embodiments are: by ensuring that the structural dimensions and shapes of the drive wheel 51 and the driven wheel 53 are completely consistent, the stability of the movement 5 is guaranteed.

[0048] Optional, such as Figures 1 to 7 As shown, in some embodiments, a limiting pin assembly 3 is also included; at the arc segment where the upper guide rail 1 rotates around axis a, the upper guide rail 1 has two protruding structures and one recessed structure, the protruding structure of the upper guide rail 1 has a round hole, and the recessed structure of the upper guide rail 1 has an elongated hole; at the arc segment where the lower guide rail 2 rotates around axis a, the lower guide rail 2 has one protruding structure and two recessed structures, the protruding structure of the lower guide rail 2 has a round hole, and the recessed structure of the lower guide rail 2 has an elongated hole; the protruding structure of the upper guide rail 1 and the recessed structure of the lower guide rail 2 are cross-fitted and connected by the limiting pin assembly 3; the recessed structure of the upper guide rail 1 and the protruding structure of the lower guide rail 2 are cross-fitted and connected by the limiting pin assembly 3.

[0049] In the above optional embodiments, it should be noted that the protruding structure at the upper end of the upper guide rail frame 1 and the recessed structure at the upper end of the lower guide rail frame 2 are cross-fitted, and the limiting pin assembly 3 is used to limit the movement by passing through the protruding structure and the recessed structure; the limiting pin assembly 3 plays a role in further strengthening the connection strength and movement stability of the upper guide rail frame 1 and the lower guide rail frame 2.

[0050] Optional, such as Figures 1 to 7 As shown, in some embodiments, the center of curvature of the limiting pin assembly 3 is located at axis a, which serves to limit the movement; the limiting pin assembly 3 and the round hole and oblong hole that cooperate with it all rotate around axis a.

[0051] In the above optional embodiments, it should be noted that the limiting pin assembly 3 is... Figure 7 The pin structure shown.

[0052] Optional, such as Figures 1 to 7 As shown, in some embodiments, the movement roller travel groove 7 of the upper guide rail frame 1 and the movement roller travel groove 7 of the lower guide rail frame 2 are continuously and smoothly connected in an arc segment centered around axis a, forming a complete and smooth curved travel groove.

[0053] In the above optional embodiments, it should be noted that the protruding and recessed structures of the upper guide rail frame 1 and the lower guide rail frame 2 always have overlapping support surfaces throughout the entire movement, corresponding to the driving wheel 51 and the driven wheel 53 moving within the U-shaped movement roller groove 7. The movement roller groove 7 of the upper guide rail frame 1 and the movement roller groove 7 of the lower guide rail frame are always overlapping, tangential, continuous, and smoothly transitioned when rotating and adjusted at any angle, so that the movement grooves of the two form a complete movement roller groove 7.

[0054] Optional, such as Figures 1 to 7 As shown, in some embodiments, when the protruding and recessed structures of the upper guide rail frame 1 and the lower guide rail frame 2 have the minimum overlap around axis a, the rollers of the movement 5 are supported by the protruding structure of the upper guide rail frame 1 and the recessed structure of the lower guide rail frame 2 respectively when traveling in the transition section between the upper guide rail frame 1 and the lower guide rail frame 2; when the protruding and recessed structures of the upper guide rail frame 1 and the lower guide rail frame 2 have the maximum overlap around axis a, the rollers of the movement 5 are supported by the protruding structure of the upper guide rail frame 1 and the recessed structure of the lower guide rail frame 2 respectively when traveling in the transition section between the upper guide rail frame 1 and the lower guide rail frame 2. When the upper guide rail frame 1 is supported by the protruding structure and the lower guide rail frame 2 is in the intermediate transition state where the protruding and concave structures of the upper guide rail frame 1 and the lower guide rail frame 2 rotate and overlap around axis a, the roller of the movement 5 is first supported by the protruding structure of the upper guide rail frame 1 alone when it travels from the upper guide rail frame 1 to the lower guide rail frame 2, then supported by both the protruding structure of the upper guide rail frame 1 and the concave structure of the lower guide rail frame 2 at the same time, and then supported by the concave structure of the lower guide rail frame 2 alone.

[0055] Optional, such as Figures 1 to 7 As shown, in some embodiments, when the push rod 4 retracts, the angle between the upper guide rail frame 1 and the lower guide rail frame 2 continuously increases, thereby increasing the included angle between the two; when the push rod 4 extends, the angle between the upper guide rail frame 1 and the lower guide rail frame 2 continuously decreases, thereby decreasing the included angle between the two.

[0056] Optional, such as Figures 1 to 7 As shown, in some embodiments, the push rod 4 is any one of an electric push rod, a hydraulic cylinder, or a pneumatic cylinder.

[0057] The angle adjustment of the upper guide rail frame 1 and the lower guide rail frame 2 is not limited to the push rod 4, but can also be achieved through any other mechanism, such as a linkage mechanism.

[0058] The above embodiments have the following advantages:

[0059] 1. The angle between the seat and backrest is adjustable, providing a high level of massage comfort.

[0060] 2. The driving wheel 51, the traveling gear 52 and the driven wheel 53 follow the same motion trajectory line in the upper and lower guide rail grooves. The driving wheel 51 and the driven wheel 53 can be made into wheels with the same structural dimensions, which is simple and direct in structure, highly versatile and lower in cost.

[0061] 3. The mechanism in the angle adjustment movement and the movement running, all parameters of the walking gear 52 and the rack meet the gear meshing transmission bar.

[0062] 4. The driving wheel 51, the walking gear 52 and the driven wheel 53 move in the movement roller walking groove 7 and the trajectory is always in the smooth running state.

[0063] Although the present application has been described in detail with general description and specific embodiments above, some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the present application, all belong to the scope of the present application claimed.

[0064] The terms such as "upper", "lower", "left", "right", "intermediate" and the like cited in the specification are only for the convenience of clear description, not to limit the scope of the present application, and the change or adjustment of the relative relationship is also considered as the implementation of the present application without substantial change of the technical content.

Claims

1. A walking mechanism for an angle-adjustable massage chair, characterized in that, The device includes an upper guide rail frame (1), a lower guide rail frame (2), a movement (5), a push rod (4), and a shaft (a). The upper guide rail frame (1) and the lower guide rail frame (2) are fixed and hinged to the shaft (a) by sheet metal or plastic parts. One end of the push rod (4) is hinged to the upper guide rail frame (1), and the other end of the push rod (4) is hinged to the lower guide rail frame (2). Both the upper guide rail frame (1) and the lower guide rail frame (2) are provided with movement roller grooves (7). The movement roller grooves (7) are used to provide movement for the movement (5). The upper guide rail frame (1) and the lower guide rail frame (2) can rotate around the shaft (a) by the extension and retraction of the push rod (4) to achieve angle adjustment. The movement roller grooves (7) of the upper guide rail frame (1) and the lower guide rail frame (2) are both U-shaped grooves; It also includes a limit pin assembly (3); At the arc segment where the upper guide rail frame (1) rotates around the axis (a), the upper guide rail frame (1) has two protruding structures and one recessed structure. The protruding structure of the upper guide rail frame (1) has a round hole, and the recessed structure of the upper guide rail frame (1) has an elongated hole. At the arc segment where the lower guide rail frame (2) rotates around the axis (a), the lower guide rail frame (2) has a protruding structure and two recessed structures. The protruding structure of the lower guide rail frame (2) has a round hole, and the recessed structure of the lower guide rail frame (2) has an elongated hole. The protruding structure of the upper guide rail frame (1) and the recessed structure of the lower guide rail frame (2) are cross-fitted and connected by the limiting pin assembly (3). The recessed structure of the upper guide rail frame (1) and the protruding structure of the lower guide rail frame (2) are interlocked and connected by the limiting pin assembly (3).

2. The adjustable massage chair movement mechanism according to claim 1, characterized in that, It also includes a drive wheel (51), a travel gear (52), a driven wheel (53), and a rack (6). The upper guide rail frame (1) has a continuous rack (6) on the movement roller travel groove (7). A set of drive wheels (51), travel gears (52), and driven wheels (53) are respectively arranged on the upper and lower sides of the movement (5). The drive wheel (51) and the travel gear (52) are arranged side by side at one end of the movement (5), and the driven wheel (53) is located at the other end of the movement (5). The travel gear (52) meshes with the rack (6) for transmission.

3. The adjustable massage chair movement mechanism according to claim 2, characterized in that, The drive wheel (51) and the driven wheel (53) have the same structural dimensions and shape.

4. The adjustable massage chair mechanism according to claim 1, characterized in that, The center of curvature of the limiting pin assembly (3) is located at the axis (a); the limiting pin assembly (3) and the round hole and oblong hole that cooperate with it all rotate around the axis (a).

5. The adjustable-angle massage chair movement mechanism according to claim 4, characterized in that, The movement roller travel groove (7) of the upper guide rail frame (1) and the movement roller travel groove (7) of the lower guide rail frame (2) are continuously and smoothly connected in an arc segment centered around the axis (a), forming a complete and smooth curved travel groove.

6. The adjustable-angle massage chair movement mechanism according to claim 5, characterized in that, When the protruding and recessed structures of the upper guide rail frame (1) and the lower guide rail frame (2) are at their minimum overlapping state around the axis (a), the rollers of the mechanism (5) are supported by the protruding structure of the upper guide rail frame (1) and the recessed structure of the lower guide rail frame (2) respectively when traveling in the transition section between the upper guide rail frame (1) and the lower guide rail frame (2). When the protruding and recessed structures of the upper guide rail frame (1) and the lower guide rail frame (2) are in the maximum overlapping state around the axis (a), the rollers of the mechanism (5) are simultaneously supported by the protruding structure of the upper guide rail frame (1) and the recessed structure of the lower guide rail frame (2) when they travel in the transition section between the upper guide rail frame (1) and the lower guide rail frame (2). When the protruding and recessed structures of the upper guide rail frame (1) and the lower guide rail frame (2) are in the intermediate transition state of rotating and overlapping around the axis (a), the roller of the mechanism (5) is first supported by the protruding structure of the upper guide rail frame (1) when it travels from the upper guide rail frame (1) to the lower guide rail frame (2). Then it is supported by both the protruding structure of the upper guide rail frame (1) and the recessed structure of the lower guide rail frame (2). Finally, it is supported by the recessed structure of the lower guide rail frame (2) alone.

7. The adjustable-angle massage chair movement mechanism according to claim 6, characterized in that, When the push rod (4) retracts, the angle between the upper guide rail frame (1) and the lower guide rail frame (2) increases continuously, thereby increasing the angle between them. When the push rod (4) is pushed out, the angle between the upper guide rail frame (1) and the lower guide rail frame (2) decreases continuously, thus achieving a smaller angle between them.

8. The adjustable massage chair movement mechanism according to claim 1, characterized in that, The push rod (4) can be any one of an electric push rod, a hydraulic cylinder, or a pneumatic cylinder.

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