Upper leg support telescoping mechanism of massage chair

Abstract

The utility model discloses an upper leg support telescoping mechanism of a massage chair, which comprises a chair frame, a rotating frame rotationally arranged on the chair frame, a leg bracket sliding relative to the rotating frame, a telescoping assembly arranged between the leg bracket and the rotating frame, a linkage assembly arranged between the chair frame and the rotating frame, and a driving piece arranged between the linkage assembly and the chair frame, the driving part drives the telescopic assembly to stretch out and draw back while driving the linkage assembly to act so as to achieve overturning of the rotating frame relative to the chair frame and sliding of the leg bracket relative to the rotating frame, the linkage assembly comprises a sliding block and a swing rod, the sliding block is arranged on the rotating frame in a sliding mode, the front end of the swing rod is rotationally connected to the sliding block, and the rear end of the swing rod is rotationally connected to the chair frame. The folding chair is reasonable in structural design, the rotating frame can be driven to vertically turn over relative to the chair frame and the leg bracket can be driven to telescopically move relative to the rotating frame by driving the telescopic push rod to move, that is, the leg bracket can be turned over, telescopically opened and closed, and the overall structure is better and more stable by arranging a guide structure.

Description

Technical Field

[0001] The utility model relates to the technical field of massage chairs, and more particularly to a leg support telescopic mechanism on a massage chair. Background Art

[0002] Common leisure massage chairs typically include a chair frame, a lower limb support device located at the front of the frame, and a lower limb drive mechanism that drives the lower limb support device up and down. To accommodate different leg lengths, the lower limb support device typically has a telescopic function. Patent application CN201621237689.0 discloses a massage chair with this functionality. This solution utilizes a driven structure to implement a single drive mechanism that simultaneously controls the movement of the leg rest relative to the seat frame and the movement of the foot rest relative to the leg rest. The driven structure of this solution comprises a lever and a transmission assembly, and the driven assembly includes multiple transmission rods, resulting in a relatively complex overall structure. In light of this, the present application is filed. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a leg support telescopic mechanism for a massage chair which has a reasonable structural design and can stably realize the flipping, telescoping and opening and closing of the leg support.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A leg support retractable mechanism on a massage chair comprises a chair frame, a rotating frame rotatably arranged on the chair frame, a leg support sliding relative to the rotating frame, a telescopic assembly arranged between the leg support and the rotating frame, a linkage assembly arranged between the chair frame and the rotating frame, and a driving member arranged between the linkage assembly and the chair frame, wherein the driving member drives the telescopic assembly to retract and retract while driving the linkage assembly to realize the flipping of the rotating frame relative to the chair frame and the sliding of the leg support relative to the rotating frame, the linkage assembly comprises a slider and a rocker arm, the slider is slidably arranged on the rotating frame, the front end of the rocker arm is rotationally connected to the slider, and the rear end of the rocker arm is rotationally connected to the chair frame, the driving member is a telescopic push rod, the telescopic end of the telescopic push rod is rotationally connected to the middle part of the rocker arm, the telescopic assembly comprises a rotating rod rotatably connected to the rotating frame, a front connecting rod rotatably connected to the leg support and the rotating rod at both ends, and a rear connecting rod rotatably connected to the slider and the rotating rod at both ends, and a guide structure is provided between the leg support and the rotating frame.

[0006] By adopting the above technical solution, the telescopic end of the telescopic push rod moves, driving the swing arm to rotate. This swinging rotation drives the swivel frame to flip up and down relative to the chair frame, and the slider slides on the swivel frame. The sliding of the slider drives the telescopic assembly to extend and retract. Specifically, the swivel rod rotates on the swivel frame, and the front and rear connecting rods rotate relative to the swivel rod, thereby achieving the extension and retraction of the leg support relative to the swivel frame. In addition, the provision of a guide structure provides a better guiding effect for the telescopic sliding of the leg support, a more stable transmission structure, and a reasonable and compact overall structure.

[0007] Preferably, the guide structure includes a first guide component and a second guide component provided on both sides of the rotating frame and the leg bracket, and the first guide component and the second guide component guide synchronously.

[0008] By adopting the above technical solution, two guide components are set up, both of which are located on both sides of the rotating frame and the leg bracket, and the two guide components guide synchronously, so that the leg bracket has better stability when telescoping and sliding relative to the rotating frame, thereby improving the comfort of use.

[0009] Preferably, the first guide assembly includes a guide block provided on one of the rotating frame and the leg bracket and a guide rod provided on the other of the two; the guide block is fixedly provided on the two side rods of the rotating frame, the guide rod is the side of the leg bracket and the guide rod is slidably provided through the guide block.

[0010] By adopting the above technical solution, since the rotating frame is rotatably connected to the chair frame, the rotating frame does not slide in the extension and contraction direction of the leg bracket when the leg bracket moves in an extension and contraction manner. Therefore, the guide blocks are fixed on the two side rods of the rotating frame, and the two side parts of the leg bracket are set as guide rods passing through the guide blocks. This can avoid the need for additional guide components, rationally utilize the structure of the leg bracket itself, and have the effect of making the structure more stable and reducing production costs.

[0011] Preferably, the second guide assembly includes a guide groove provided on one of the rotating frame and the leg bracket and a guide column provided on the other of the two, the guide column being located in the guide groove and sliding relative to the guide groove; the guide groove is provided on the two side rods of the rotating frame, and the guide column is provided on the guide rod.

[0012] By adopting the above technical solution, the guide column is set on the guide rod. Since the guide rod is a straight rod, the guiding synchronization of the first guide component and the second guide component can be guaranteed, and the guide groove is hollowed out, and the guide rod is located in the guide groove. Under the action of gravity, the leg bracket with the guide rod can be more stably located in the guide groove, and the sliding matching structure of the guide rod and the guide groove has better stability.

[0013] Preferably, a guide rod is provided in the middle of the rotating frame, the slider is slidably provided on the guide rod, a rotation fulcrum is provided on the guide rod, and the rotation fulcrum is rotationally matched with the rotating rod.

[0014] By adopting the above technical solution, the guide rod is set in the middle of the rotating frame, and the two side rods of the rotating frame are matched with the setting of the telescopic assembly and the slider in the middle of the rotating frame. The guide structure at the side rod provides stable support and good guiding effect for the telescopic sliding of the leg bracket. Such a structural design is reasonable and the overall stability is better. The rotating fulcrum and the slider are located on the same guide rod. When sliding along the guide rod, the telescopic assembly can be driven to move more timely and effectively, and the transmission efficiency is higher.

[0015] Preferably, a connecting frame is fixedly mounted on the slider, the front end of the rocker arm is rotatably connected to the connecting frame, and the rear connecting rod is rotatably connected to the connecting frame.

[0016] By adopting the above technical solution and the setting of a connecting frame, a connection function can be provided for the rocker arm and the rear connecting rod. Compared with directly connecting the rocker arm and the rear connecting rod to the slide, there is no need to modify the existing slider structure, and the adaptability is better. In addition, the structure of the connecting frame can be improved to achieve the optimal connection position of the rocker arm and the rear connecting rod with better transmission efficiency when the transmission is connected.

[0017] Preferably, a leg support plate is fixedly connected to the leg support, and the front connecting rod is rotatably connected to the leg support plate.

[0018] By adopting the above technical solution, since the leg support plate will cover the leg bracket during actual use, that is, the front end of the leg support plate will be closer to the front end of the leg bracket, rotating the front connecting rod to the leg support plate can make the connection of the front connecting rod more convenient and can achieve a greater forward movement distance of the leg support plate.

[0019] Beneficial effects of the utility model:

[0020] The utility model has a reasonable structural design. By driving the telescopic push rod to move, the rotating frame can be driven to flip up and down relative to the chair frame and the leg bracket can be telescopically moved relative to the rotating frame, thereby realizing the flipping, telescoping and opening and closing of the leg bracket. In addition, by setting a guide structure, the overall structure is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a specific embodiment of the present invention reflecting the leg support plate in a folded and retracted state;

[0022] Figure 2 This is a schematic diagram of a specific embodiment of the present invention reflecting the leg support plate in an open and extended state;

[0023] Figure 3 This is a schematic diagram of the structure of the telescopic component in the retracted state according to a specific embodiment of the utility model. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the structure of the telescopic component in the retracted state according to a specific embodiment of the utility model. Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the structure of the telescopic component in the extended state according to a specific embodiment of the present invention. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the structure of the telescopic component in the extended state according to a specific embodiment of the present invention. Figure 2 .

[0027] In the figure: 1. Chair frame; 2. Rotating frame; 21. Side rod; 22. Guide rod; 221. Rotating fulcrum; 3. Leg support; 31. Leg support plate; 4. Telescopic assembly; 41. Rotating rod; 42. Front connecting rod; 43. Rear connecting rod; 5. Linkage assembly; 51. Slider; 511. Connecting frame; 52. Rocker arm; 6. Telescopic push rod; 61. Telescopic end; 7. Guide structure; 8. First guide assembly; 81. Guide block; 82. Guide rod; 9. Second guide assembly; 91. Guide groove; 92. Guide column. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not 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 efforts are within the scope of protection of the present invention.

[0029] like Figure 1-6As shown, a leg support telescopic mechanism on a massage chair includes a chair frame 1, a rotating frame 2 rotatably arranged on the chair frame 1, a leg support 3 sliding relative to the rotating frame 2, a telescopic component 4 arranged between the leg support 3 and the rotating frame 2, a linkage component 5 arranged between the chair frame 1 and the rotating frame 2, and a driving member arranged between the linkage component 5 and the chair frame 1. The driving member drives the telescopic component 4 to extend and retract while driving the linkage component 5 to achieve the flipping of the rotating frame 2 relative to the chair frame 1 and the sliding of the leg support 3 relative to the rotating frame 2. The linkage component 5 includes a slider 51 and a rocker 52. The slider 51 is slidably arranged on the rotating frame 2 The front end of the rocker arm 52 is rotatably connected to the slider 51, and the rear end of the rocker arm 52 is rotatably connected to the chair frame 1. The driving member is a telescopic push rod 6, and the telescopic end 61 of the telescopic push rod 6 is rotatably connected to the middle part of the rocker arm 52. The telescopic assembly 4 includes a rotating rod 41 rotatably connected to the rotating frame 2, a front connecting rod 42 rotatably connected to the leg bracket 3 and the rotating rod 41 at both ends, and a rear connecting rod 43 rotatably connected to the slider 51 and the rotating rod 41 at both ends. A guide structure 7 is provided between the leg bracket 3 and the rotating frame 2; the guide structure 7 includes a first guide provided on both sides of the rotating frame 2 and the leg bracket 3. Component 8 and second guide component 9, the first guide component 8 and the second guide component 9 are synchronously guided; the first guide component 8 includes a guide block 81 provided on one of the rotating frame 2 and the leg bracket 3 and a guide rod 82 provided on the other of the two; the guide block 81 is fixedly provided on the two side rods 21 of the rotating frame 2, the guide rod 82 is the side of the leg bracket 3 and the guide rod 82 slides through the guide block 81; the second guide component 9 includes a guide groove 91 provided on one of the rotating frame 2 and the leg bracket 3 and a guide column 92 provided on the other of the two, the guide column 92 is located in the guide groove 91 and relative to the guide The groove 91 is slidingly arranged; the guide groove 91 is arranged on the two side rods 21 of the rotating frame 2, and the guide column 92 is arranged on the guide rod 82; a guide rod 22 is provided in the middle of the rotating frame 2, and the slider 51 is slidingly arranged on the guide rod 22, and a rotating fulcrum 221 is provided on the guide rod 22, and the rotating fulcrum 221 is rotatably matched with the rotating rod 41; a connecting frame 511 is fixedly mounted on the slider 51, the front end of the rocker arm 52 is rotatably connected to the connecting frame 511, and the rear connecting rod 43 is rotatably connected to the connecting frame 511; a leg support plate 31 is fixedly connected to the leg support, and the front connecting rod 42 is rotatably connected to the leg support plate 31.

[0030] In the present invention, the leg support retractable mechanism of the present invention is a part of the massage chair, which is mainly arranged at the front end of the massage chair to support and lift the legs of the human body, and the leg support plate 31 can have a flipped, folded and retracted state relative to the seat or a flipped, opened and extended state. The specific state change of the leg support plate 31 is realized by the leg support retractable mechanism of the present application.

[0031] In the specific embodiment, the leg support 31 is fixed to the leg support 3, and the front connecting rod 42 of the telescopic assembly 4 is rotatably connected to the leg support 31. When the telescopic push rod 6 is in the retracted state, the telescopic assembly 4 is also in the retracted state. When the telescopic push rod 6 is in the extended state, the telescopic assembly 4 is in the extended state, and the leg support 31 is flipped open and extended relative to the seat. Specifically, the telescopic push rod 6 can be an electric push rod.

[0032] When the telescopic push rod 6 is pushed out, it rotates the rocker arm 52 upward. Since the rocker arm 52 is rotationally connected to the connecting bracket 511 of the slider 51, the movement of the rocker arm 52 drives the slider 51 away from the front link 42 and slides on the guide rod 22. At this time, the rotating frame 2 is driven to flip upward. Moreover, since the rear link 43 is rotationally connected to the slider 51, the sliding of the slider 51 drives the rear link 43 to move. The rear link 43 drives the rotating rod 41 to rotate. The rotating rod 41 drives the front link 42 to move, and the front link 42 drives the leg support plate 31 to extend forward. The leg support plate 3 slides relative to the rotating frame 2 through the cooperation of the guide block 81 and the guide rod 82, and the cooperation of the guide column 92 and the guide groove 91. When the rotating frame 2 flips upward, it drives the leg support plate 3 to flip upward. The extension of the telescopic assembly 4 drives the leg support plate 3 to slide forward relative to the rotating frame 2. In this way, the leg support plate 31 is flipped, opened, and extended relative to the chair frame 1. When the telescopic push rod 6 is retracted, the telescopic assembly 4 is retracted to drive the leg support 3 to move backward relative to the rotating frame 2, and the rotating frame 2 is turned over and folded downward, that is, the leg support plate 31 is turned over, folded and retracted.

[0033] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A leg support retractable mechanism for a massage chair, comprising a chair frame (1), a rotating frame (2) rotatably arranged on the chair frame (1), a leg support (3) sliding relative to the rotating frame (2), a telescopic assembly (4) arranged between the leg support (3) and the rotating frame (2), a linkage assembly (5) arranged between the chair frame (1) and the rotating frame (2), and a driving member arranged between the linkage assembly (5) and the chair frame (1), wherein the driving member drives the telescopic assembly (4) to retract and retract while driving the linkage assembly (5) to move so as to realize the flipping of the rotating frame (2) relative to the chair frame (1) and the sliding of the leg support (3) relative to the rotating frame (2), and is characterized in that: The linkage assembly (5) includes a slider (51) and a rocker (52), the slider (51) is slidably arranged on the rotating frame (2), the front end of the rocker (52) is rotatably connected to the slider (51), and the rear end of the rocker (52) is rotatably connected to the chair frame (1), the driving member is a telescopic push rod (6), the telescopic end (61) of the telescopic push rod (6) is rotatably connected to the middle part of the rocker (52), the telescopic assembly (4) includes a rotating rod (41) rotatably connected to the rotating frame (2), a front connecting rod (42) whose two ends are respectively rotatably connected to the leg bracket (3) and the rotating rod (41), and a rear connecting rod (43) whose two ends are respectively rotatably connected to the slider (51) and the rotating rod (41), and a guide structure (7) is provided between the leg bracket (3) and the rotating frame (2).

2. The leg support retractable mechanism for a massage chair according to claim 1, characterized in that: The guide structure (7) comprises a first guide assembly (8) and a second guide assembly (9) which are arranged on both sides of the rotating frame (2) and the leg bracket (3); the first guide assembly (8) and the second guide assembly (9) are synchronously guided.

3. The leg support retractable mechanism for a massage chair according to claim 2, characterized in that: The first guide assembly (8) comprises a guide block (81) provided on one of the rotating frame (2) and the leg bracket (3) and a guide rod (82) provided on the other of the two.

4. The leg support retractable mechanism for a massage chair according to claim 3, characterized in that: The guide block (81) is fixedly arranged on the two side rods (21) of the rotating frame (2); the guide rod (82) is a side portion of the leg bracket (3) and the guide rod (82) passes through the guide block (81) and is slidably arranged.

5. The leg support retractable mechanism for a massage chair according to claim 4, characterized in that: The second guide assembly (9) comprises a guide groove (91) provided on one of the rotating frame (2) and the leg bracket (3) and a guide post (92) provided on the other of the two. The guide post (92) is located in the guide groove (91) and is slidably arranged relative to the guide groove (91).

6. The leg support retractable mechanism for a massage chair according to claim 5, characterized in that: The guide groove (91) is arranged on the two side rods (21) of the rotating frame (2), and the guide column (92) is arranged on the guide rod (82).

7. A massage chair leg support retractable mechanism according to any one of claims 1 to 6, characterized in that: A guide rod (22) is provided in the middle of the rotating frame (2), a slider (51) is slidably provided on the guide rod (22), a rotation fulcrum (221) is provided on the guide rod (22), and the rotation fulcrum (221) is rotationally matched with the rotating rod (41).

8. The leg support retractable mechanism for a massage chair according to claim 7, characterized in that: A connecting frame (511) is fixedly mounted on the slider (51), the front end of the swing rod (52) is rotatably connected to the connecting frame (511), and the rear connecting rod (43) is rotatably connected to the connecting frame (511).

9. The leg support retractable mechanism for a massage chair according to claim 8, characterized in that: The leg support is fixedly connected with a leg support plate (31), and the front connecting rod (42) is rotatably connected to the leg support plate (31).

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