Three-section type leg support overturning structure driven by air cylinder

Abstract

The utility model relates to the technical field of massage chairs, in particular to a three-section type leg support overturning structure driven by an air cylinder. Comprising a main supporting plate device and an auxiliary device, the auxiliary device comprises a middle supporting plate assembly, a rotating shaft, a gear, a pedal, a driving air cylinder, a connecting frame and a rack, during use, the driving air cylinder acts to push the connecting frame to move so as to drive the rack to slide, meanwhile, the rack drives the gear to rotate when sliding, and then rotating shaft rotation and pedal rotation can be achieved; according to the massage chair, the angle of the feet placed on the pedal can be adjusted and supported, so that when the massage chair is used, the feet of a user can be adjusted and supported, and the use comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of massage chairs, in particular to a three-section leg rest flipping structure driven by a cylinder. Background Art

[0002] For existing massage chairs with leg rests, they usually provide massages in a sitting position, and the main body of the massage chair cannot lie down. Even if it can lie down, the leg rest part is still in a drooping state, making it difficult to achieve the linkage between the main body of the massage chair and the leg rest. Even if the linkage is achieved, its structure is very complex, or there are multiple driving parts, and the linkage between the two is poor, the work is not smooth, and the user experience is reduced.

[0003] The prior art CN208851947U discloses a massage chair with a linkage structure, including a base, a seat bracket and a leg rest. The seat bracket is hinged to the base, and a reclining mechanism for driving the seat bracket to recline is further provided between the seat bracket and the base. Hooks are formed on the leg rest, and the leg rest is hinged to the seat bracket through the hooks. Connecting rods are arranged on both sides of the hooks on the leg rest, and rotating rods are respectively arranged on both sides of the base. One end of the rotating rod is hinged to the base, and the other end is hinged to the connecting rod on the same side. This enables the leg rest to flip as the seat bracket reclines, with good linkage.

[0004] However, for the above-mentioned massage chair with a linkage structure, although its leg rest can flip as the seat bracket reclines and has good linkage, it does not provide a placement and support structure for the feet, which will make it difficult for the user to adjust and support the feet when lying down, and the comfort is poor. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a three-section leg rest flipping structure driven by a cylinder, aiming to realize the adjustable support for the user's feet when the massage chair is in use, which is beneficial to improving the use comfort.

[0006] To achieve the above purpose, the utility model provides a three-section leg rest flipping structure driven by a cylinder, which includes a main support plate device and also includes an auxiliary device;

[0007] The auxiliary device includes a middle support plate assembly, a rotating shaft, a gear, a pedal, a driving cylinder, a connecting frame and a rack. The middle support plate assembly is arranged on the front side of the main support plate device. The rotating shaft is rotatably connected to the middle support plate assembly and is located on the front side of the middle support plate assembly. The gear is fixedly connected to the rotating shaft and is located on the rotating shaft. The pedal is fixedly connected to the rotating shaft and is located on the side of the rotating shaft away from the gear. The driving cylinder is fixedly connected to the middle support plate assembly and is located on the side of the middle support plate assembly close to the gear. The connecting frame is connected to the output end of the driving cylinder and is located on the output end of the driving cylinder. The rack is fixedly connected to the connecting frame, meshes with the gear, and is located on the side of the connecting frame close to the gear.

[0008] Among them, the main support plate device includes a main bracket, a first reduction gear, a rotating arm and an operating arm. The main bracket is located on the rear side of the middle support plate assembly. The first reduction gear is fixedly connected to the main bracket and is located on the main bracket. The rotating arm is hinged to the main bracket, is connected to the output end of the first reduction gear, and is located on the output end of the first reduction gear. The operating arm is respectively hinged to the rotating arm and the middle support plate assembly and is located on the side of the rotating arm close to the middle support plate assembly.

[0009] Among them, the middle support plate assembly includes a lower bracket, an upper bracket and a driving member. The lower bracket is hinged to the operating arm and is located on the front side of the operating arm. The upper bracket is rotatably connected to the rotating shaft, is slidably connected to the rack, and is located above the lower bracket. The driving member is arranged on the side of the lower bracket close to the upper bracket.

[0010] Among them, the driving member includes a second reduction gear and a guiding member. The second reduction gear is fixedly connected to the lower bracket. The output end of the second reduction gear is fixedly connected to the upper bracket and is located on the lower bracket. The guiding member is arranged on the side of the upper bracket close to the lower bracket.

[0011] Among them, the guiding member includes a fixed cylinder and a guide rod. The fixed cylinder is fixedly connected to the lower bracket and is located on both sides of the lower bracket. The guide rod is fixedly connected to the upper bracket, is slidably connected to the fixed cylinder, and is located on the side of the upper bracket close to the fixed cylinder.

[0012] A three - section leg rest flipping structure driven by a cylinder of the present utility model, the main support plate device is used for connection and installation, the middle support plate assembly is arranged on the front side of the main support plate device and is used for cooperating with flipping. The rotating shaft is installed on one side of the middle support plate assembly, the gear is installed on one side of the rotating shaft, the pedal is installed on one side of the rotating shaft, the driving cylinder is installed on one side of the middle support plate assembly, the connecting frame is installed at the output end of the driving cylinder, the rack is connected with the connecting frame and is slidably connected with the middle support plate assembly and meshes with the gear. When in use, the driving cylinder acts to push the connecting frame to move, thereby driving the rack to slide. At the same time, when the rack slides, it will drive the gear to rotate, and then the rotating shaft can be rotated to realize the rotation of the pedal, so that the feet placed on the pedal can realize angle - adjustable support. Furthermore, when the massage chair is in use, the feet of the user can be adjusted and supported, which is beneficial to improving the use comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0014] Figure 1 is the overall structural schematic diagram of the cylinder - driven three - section leg rest flipping structure of the present utility model.

[0015] Figure 2 is the structural schematic diagram of the main support plate device of the present utility model.

[0016] Figure 3 is the schematic diagram of the installation position of the gear of the present utility model.

[0017] In the figure: 1 - main support plate device, 2 - middle support plate assembly, 3 - rotating shaft, 4 - gear, 5 - pedal, 6 - driving cylinder, 7 - connecting frame, 8 - rack, 10 - main bracket, 11 - first speed reducer, 12 - rotating arm, 13 - actuating arm, 20 - lower bracket, 21 - upper bracket, 22 - driving member, 221 - second speed reducer, 222 - guiding member, 2221 - fixed cylinder, 2222 - guide rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0019] As Figures 1 to 3 shown, among which Figure 1 is the overall structural schematic diagram of the cylinder - driven three - section leg rest flipping structure, Figure 2 is the structural schematic diagram of the main support plate device 1, Figure 3It is a schematic diagram of the installation position of the gear 4. The present utility model provides a three-stage leg rest flipping structure driven by a cylinder, which includes a main support plate device 1 and an auxiliary device. The auxiliary device includes a middle support plate assembly 2, a rotating shaft 3, a gear 4, a pedal 5, a driving cylinder 6, a connecting frame 7 and a rack 8. The main support plate device 1 includes a main bracket 10, a first reducer 11, a rotating arm 12 and an operating arm 13. The middle support plate assembly 2 includes a lower bracket 20, an upper bracket 21 and a driving member 22. The driving member 22 includes a second reducer 221 and a guiding component 222. The guiding component 222 includes a fixed cylinder 2221 and a guide rod 2222. Through the foregoing solution, when the massage chair is in use, the feet of the user can be adjusted and supported, which is beneficial to improving the use comfort. It can be understood that the foregoing solution can adjust and support the feet of the user, which is beneficial to improving the use comfort of the massage chair.

[0020] In this embodiment, the main support plate device 1 is used for fixed connection and installation support.

[0021] Among them, the middle support plate assembly 2 is arranged on the front side of the main support plate device 1. The rotating shaft 3 is rotatably connected to the middle support plate assembly 2 and is located on the front side of the middle support plate assembly 2. The gear 4 is fixedly connected to the rotating shaft 3 and is located on the rotating shaft 3. The pedal 5 is fixedly connected to the rotating shaft 3 and is located on the side of the rotating shaft 3 away from the gear 4. The driving cylinder 6 is fixedly connected to the middle support plate assembly 2 and is located on the side of the middle support plate assembly 2 close to the gear 4. The connecting frame 7 is connected to the output end of the driving cylinder 6 and is located on the output end of the driving cylinder 6. The rack 8 is fixedly connected to the connecting frame 7, meshes with the gear 4, and is located on the side of the connecting frame 7 close to the gear 4. The middle support plate assembly 2 is used for flipping assistance. The rotating shaft 3 is installed on the middle support plate assembly 2 through a rotating bearing. The gear 4 is installed on the rotating shaft 3 through a flat key and a locking bolt. The pedal 5 is installed on the rotating shaft 3 through a positioning pin and a bolt. The driving cylinder 6 is a linear cylinder, and its output end moves linearly and is installed on the middle support plate assembly 2 through bolts. During installation, mounting holes (not shown in the figure) are provided on the connecting frame 7, and then it is connected to the output end of the driving cylinder 6 through bolts. The rack 8 is connected to the connecting frame 7 through a screw nut and meshes with the gear 4. At the same time, a guiding chute is provided on the middle support plate assembly 2 to facilitate the linear sliding of the rack 8. When the rack 8 slides in the guiding chute, the linear movement guiding of the output end of the driving cylinder 6 can also be realized.

[0022] Secondly, the main bracket 10 is located at the rear side of the middle support plate assembly 2; the first speed reducer 11 is fixedly connected to the main bracket 10 and is located on the main bracket 10; the rotating arm 12 is hinged to the main bracket 10, the rotating arm 12 is connected to the output end of the first speed reducer 11 and is located on the output end of the first speed reducer 11; the action arm 13 is respectively hinged to the rotating arm 12 and the middle support plate assembly 2 and is located on the side of the rotating arm 12 close to the middle support plate assembly 2. The main bracket 10 is connected to the seat frame by bolts, the first speed reducer 11 is installed on the main bracket 10 by bolts, the internal of the first speed reducer 11 adopts worm and worm gear transmission, and its connecting screw can realize telescopic movement after action. The rotating arm 12 is hinged on the main bracket 10 to realize rotation. The output end of the rotating arm 12 is connected to the output end of the first speed reducer 11 through a T-shaped pin shaft, and an open pin is installed on the other side of the T-shaped pin shaft for limit. The action arm 13 is respectively hinged to the rotating arm 12 and the middle support plate assembly 2 to realize rotation, and two separate groups of the action arms 13 are arranged on both sides respectively.

[0023] Then, the lower bracket 20 is hinged to the action arm 13 and is located at the front side of the action arm 13; the upper bracket 21 is rotatably connected to the rotating shaft 3, is slidably connected to the rack 8, and is located above the lower bracket 20; the driving member 22 is arranged on the side of the lower bracket 20 close to the upper bracket 21. The lower bracket 20 is hinged to the action arm 13, the rotating shaft 3 is installed on the upper bracket 21 through a rotating bearing, and a guiding chute is arranged on the upper bracket 21 to facilitate the linear sliding of the rack 8.

[0024] Furthermore, the second speed reducer 221 is fixedly connected to the lower bracket 20, the output end of the second speed reducer 221 is fixedly connected to the upper bracket 21 and is located on the lower bracket 20; the guiding component 222 is arranged on the side of the upper bracket 21 close to the lower bracket 20. The second speed reducer 221 is installed on the lower bracket 20 by bolts, the internal of the second speed reducer 221 adopts worm and worm gear transmission, and its connecting screw can realize telescopic movement after action. The output end of the second speed reducer 221 is connected to the upper bracket 21 through a screw and nut. The guiding component 222 is arranged on the side of the upper bracket 21 close to the lower bracket 20 for guiding when the upper bracket 21 realizes telescopic movement.

[0025] Finally, the fixed cylinder 2221 is fixedly connected to the lower bracket 20 and is located on both sides of the lower bracket 20; the guide rod 2222 is fixedly connected to the upper bracket 21, is slidably connected to the fixed cylinder 2221, and is located on the side of the upper bracket 21 close to the fixed cylinder 2221. The fixed cylinder 2221 is welded to both sides of the lower bracket 20, and the guide rod 2222 is welded to the upper bracket 21 and can be slidably matched with the fixed cylinder 2221.

[0026] When the present utility model is used to realize the adjustable support for the user's feet, which is beneficial to improving the comfort of using the massage chair, during use, first, the main bracket 10 is connected to the seat frame to achieve fixation. Then, the first reduction gear 11 operates to drive the rotating arm 12 to rotate. With the cooperation of the operating arm 13, the combination of the lower bracket 20 and the upper bracket 21 can be flipped. Further, the second reduction gear 221 operates, and with the cooperation of the guiding component 222, the upper bracket 21 can be telescopically moved. Finally, the driving cylinder 6 operates to push the connecting frame 7 to move, thereby driving the rack 8 to slide. At the same time, when the rack 8 slides, it will drive the gear 4 to rotate, and further, the rotating shaft 3 can be rotated to realize the rotation of the pedal 5, so that the feet placed on the pedal 5 can achieve angle-adjustable support. Furthermore, when the massage chair is in use, the adjustable support for the user's feet can be realized, which is beneficial to improving the use comfort.

[0027] The above disclosure is only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A cylinder-driven three-stage leg support flipping structure, including a main support plate device, characterized in that, it further includes an auxiliary device; The auxiliary device includes a middle support plate assembly, a rotating shaft, a gear, a pedal, a driving cylinder, a connecting frame and a rack. The middle support plate assembly is arranged on the front side of the main support plate device. The rotating shaft is rotatably connected to the middle support plate assembly and is located on the front side of the middle support plate assembly. The gear is fixedly connected to the rotating shaft and is located on the rotating shaft. The pedal is fixedly connected to the rotating shaft and is located on the side of the rotating shaft away from the gear. The driving cylinder is fixedly connected to the middle support plate assembly and is located on the side of the middle support plate assembly close to the gear. The connecting frame is connected to the output end of the driving cylinder and is located on the output end of the driving cylinder. The rack is fixedly connected to the connecting frame, meshes with the gear, and is located on the side of the connecting frame close to the gear.

2. The cylinder-driven three-stage leg support flipping structure according to claim 1, characterized in that, The main support plate device includes a main bracket, a first reduction gear, a rotating arm and an action arm. The main bracket is located behind the middle support plate assembly; the first reduction gear is fixedly connected to the main bracket and is located on the main bracket; the rotating arm is hinged to the main bracket, the rotating arm is connected to the output end of the first reduction gear and is located on the output end of the first reduction gear; the action arm is respectively hinged to the rotating arm and the middle support plate assembly and is located on the side of the rotating arm close to the middle support plate assembly.

3. The cylinder-driven three-stage leg support flipping structure according to claim 2, characterized in that, The middle support plate assembly includes a lower bracket, an upper bracket and a driving member. The lower bracket is hinged to the action arm and is located on the front side of the action arm; the upper bracket is rotatably connected to the rotating shaft, is slidably connected to the rack, and is located above the lower bracket; the driving member is arranged on the side of the lower bracket close to the upper bracket.

4. The cylinder-driven three-stage leg support flipping structure according to claim 3, characterized in that, The driving member includes a second reduction gear and a guiding member. The second reduction gear is fixedly connected to the lower bracket, the output end of the second reduction gear is fixedly connected to the upper bracket and is located on the lower bracket; the guiding member is arranged on the side of the upper bracket close to the lower bracket.

5. The cylinder-driven three-stage leg support flipping structure according to claim 4, characterized in that, The guiding member includes a fixed cylinder and a guide rod. The fixed cylinder is fixedly connected to the lower bracket and is located on both sides of the lower bracket; the guide rod is fixedly connected to the upper bracket, is slidably connected to the fixed cylinder, and is located on the side of the upper bracket close to the fixed cylinder.

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