A movement and a massage chair

Abstract

The application provides a core walking mechanism and a massage chair, which comprises a guide rail component formed by the joint of an upper guide rail frame and a lower guide rail frame, the guide rail component being suitable for the core to freely walk on a guide path defined by the two guide rail frames; the upper guide rail frame and the lower guide rail frame are pivotally arranged at the joint, the upper guide rail frame is provided with a first rack, and the lower guide rail frame is provided with a second rack; the core walking mechanism further comprises a connecting rack which is butted between the first rack and the second rack; the connecting rack is configured to adaptively elastically deform when the two guide rail frames are rotationally adjusted at an angle, so as to maintain smooth butting between the connecting rack and the first rack and the second rack; and the second rack is configured to be movable relative to the lower guide rail frame and to follow the movement to reduce the deformation amplitude of the connecting rack after the deformation of the connecting rack. In one aspect, the damage of the connecting rack is avoided to prolong the service life of the connecting rack, and in another aspect, the phenomenon of tooth extrusion and deformation of the connecting rack is greatly weakened.

Description

Technical Field

[0001] This invention relates to the field of massage device technology, and more specifically, to a walking mechanism and a massage chair. Background Technology

[0002] The variety of massage chairs available today is increasing, and their functions are becoming more diverse. Massage chair seating has evolved from the initial sitting and backrest positions to the current reclining function, with adjustable angles to accommodate various user needs. Simultaneously, it's crucial that the massage mechanism operates correctly from head to toe along the backrest and seat. A common approach is a segmented rack and pinion structure, which facilitates the movement of the massage mechanism between the racks when the seat is reclined or raised. However, the inconsistent pitch at the segmentation points inevitably leads to quality issues such as missing or skipped teeth. Consequently, a new approach has emerged using multiple independent massage mechanisms at each segment. This requires multiple mechanisms, increasing costs and making it difficult to effectively massage the blind spots at the segmentation points. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a movement mechanism and a massage chair to solve the above problems.

[0004] The present invention adopts the following solution:

[0005] This application provides a movement traveling mechanism, including a guide rail component formed by the engagement of an upper guide rail frame and a lower guide rail frame. The guide rail component is adapted for the movement to travel freely on a guide path defined by the guide rail frame. The upper guide rail frame and the lower guide rail frame are pivotally connected to each other at the joint. The upper guide rail frame is provided with a first rack, and the lower guide rail frame is provided with a second rack. The movement traveling mechanism also includes a connecting rack that engages between the first rack and the second rack. The connecting rack is configured to adaptably undergo elastic deformation when the two guide rail frames rotate to adjust their angle, so as to maintain smooth connection between the connecting rack and the first rack and the second rack. The second rack is configured to be movable relative to the lower guide rail frame and to follow the deformation of the connecting rack to reduce the deformation amplitude of the connecting rack.

[0006] As a further improvement, the connecting rack is constructed as a thermoplastic elastic element, which is an arc-shaped segment in the initial state and gradually tends to be a straight line segment after elastic deformation.

[0007] As a further improvement, the upper and lower guide rails can be switched from their initial positions to their unfolded positions to rotate and adjust their angles for adjusting the backrest of the massage chair; when in the initial position, the connecting rack is maintained in its initial state without elastic deformation.

[0008] As a further improvement, the teeth on the connecting rack have the same pitch as the teeth on the first and second racks, and have the same pitch at the joint of each rack, so that the movement can pass smoothly through the deformed connecting rack.

[0009] As a further improvement, one end of the connecting rack is smoothly connected to the first rack via a rack washer, and the other end is smoothly connected to the second rack via another rack washer, so as to cooperate to construct a whole rack component suitable for the meshing and sliding of the movement.

[0010] As a further improvement, a support plate is placed horizontally between the connecting rack and its rack washer. The support plate is shaped similarly to the connecting rack and is attached to the side of the connecting rack. The two ends of the support plate are engaged and overlapped with the first rack and the second rack.

[0011] As a further improvement, the lower guide rail frame is provided with an elongated sliding groove along its length to facilitate the movement of the second rack. After receiving the elastic deformation transmitted by the connecting rack, the second rack removes part of the deformation and converts it into smooth displacement of the second rack in the sliding groove.

[0012] As a further improvement, the upper guide rail frame is provided with a mounting groove suitable for the first rack along its length, and the first rack is fixedly confined within the mounting groove.

[0013] As a further improvement, a hinge shaft and a limiting pin are provided between the upper guide rail frame and the lower guide rail frame. The two guide rail frames can rotate around the hinge shaft to adjust the angle. The limiting pin is arranged on one of the guide rail frames, and a strip groove for accommodating the limiting pin is correspondingly opened on the other guide rail frame.

[0014] This application also provides a massage chair, including a chair frame, a mechanism, and the aforementioned mechanism travel mechanism for the movement of the mechanism; wherein, the chair frame includes a seat frame and a back frame, the upper guide rail is mounted on the back frame, and the lower guide rail is mounted on the seat frame.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0016] The movement mechanism of this application features connecting racks at the segment between the upper and lower guide rails. These connecting racks engage with the first rack of the upper guide rail and the second rack of the lower guide rail, effectively ensuring smooth connection between the racks at the joint. Specifically, the connecting racks adaptively deform with the rotation of the guide rails to facilitate a smooth connection. To prevent severe irreversible deformation of the connecting racks, which could hinder the implementation of the rack-and-pinion transmission function, the fixed constraint of the lower guide rail on the second rack is eliminated. This allows the second rack to move relative to the lower guide rail, thus relieving some of the deformation force after deformation. This effectively reduces the deformation amplitude of the connecting racks, preventing damage and extending their service life, while also significantly reducing tooth compression and deformation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the movement mechanism according to an embodiment of the present invention;

[0018] Figure 2 This is an application scenario diagram of the movement mechanism according to an embodiment of the present invention;

[0019] Figure 3 yes Figure 2 Disassembly diagram;

[0020] Figure 4 This is a partial cross-sectional view of the movement mechanism according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the movement mechanism of this invention switching from the initial position to the unfolded position.

[0022] Figure 6 This is a partially enlarged schematic diagram of the movement mechanism according to an embodiment of the present invention.

[0023] icon:

[0024] 1-Upper guide rail frame; 11-First rack; 12-Mounting groove; 2-Lower guide rail frame; 21-Second rack; 22-Sliding groove; 3-Connecting rack; 31-Rack washer; 4-Support plate; 5-Hinge shaft; 6-Limit pin; 7-Strip groove; 8-Mechanical mechanism; 9-Rack connector; 10-Reinforcing plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example

[0027] Combination Figures 1 to 6 This embodiment provides a movement mechanism, including a guide rail component formed by the engagement of an upper guide rail frame 1 and a lower guide rail frame 2. The guide rail component is suitable for the movement 8 to move freely on the guide path defined by the guide rail frame. The upper guide rail frame 1 and the lower guide rail frame 2 are pivotally connected to each other at the joint. The upper guide rail frame 1 is provided with a first rack 11, and the lower guide rail frame 2 is provided with a second rack 21. The movement mechanism also includes a connecting rack 3 that engages between the first rack 11 and the second rack 21. The connecting rack 3 is configured to adaptably undergo elastic deformation when the two guide rail frames rotate to adjust their angle, so as to maintain smooth connection between the connecting rack 3 and the first rack 11 and the second rack 21. Furthermore, the second rack 21 is configured to be movable relative to the lower guide rail frame 2, and can follow the deformation of the connecting rack 3 to reduce the deformation amplitude of the connecting rack 3.

[0028] The aforementioned movement mechanism, by providing connecting racks 3 at the segment between the upper guide rail 1 and the lower guide rail 2, effectively ensures smooth connection between the racks at the joint. Specifically, the connecting racks 3 can adaptively deform with the rotation of the guide rail frame to facilitate a smooth connection. To prevent severe irreversible deformation of the connecting racks 3, which could hinder the implementation of its rack meshing transmission function, the fixed constraint of the lower guide rail frame 2 on the second rack 21 is eliminated. This allows the second rack 21 to move relative to the lower guide rail frame 2, thus relieving some of the deformation force after the connecting racks 3 deform. This effectively reduces the deformation amplitude of the connecting racks 3, preventing damage and extending their service life, and significantly reducing tooth compression and deformation phenomena.

[0029] It should be understood that the elastic deformation of the connecting rack 3 mainly occurs because its main body adapts to the guide rail frame by undergoing an arc-shaped bend, thus preventing unnecessary interference with the rotation between the guide rail frames. Clearly, the main deformation area of ​​the connecting rack 3 is its main body, but the teeth on its end face are also affected by the deformation, causing the tooth pitch to shrink or expand. Although the deformation at the tooth level is only slight, it inevitably leads to inaccurate alignment of the movement 8 meshing with the connecting rack 3, which is detrimental to the operation of the movement in the long run. Therefore, the deformation range of the connecting rack 3 after elastic deformation remains crucial.

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, in this embodiment, the connecting rack 3 is constructed as a thermoplastic elastic component, which initially has an arc-shaped segment and gradually tends to become a straight segment after elastic deformation. The connecting rack 3 is preferably made of a material with high toughness and good elasticity, such as PA6 or TPEE, to improve the service life and functionality of the connecting rack 3. Furthermore, the thermoplastic elastic component connecting rack 3, being an arc-shaped segment in its initial state, can adapt to rotation between the two guide rails. In particular, the transition from an arc-shaped segment to a straight segment after elastic deformation significantly enhances its fatigue resistance, making it more suitable for frequent operation.

[0031] Furthermore, the upper guide rail 1 and lower guide rail 2 switch from their initial positions to their unfolded positions to adjust their angles, thus adjusting the backrest of the massage chair. In the initial position, the connecting rack 3 remains in its initial state without elastic deformation. Clearly, the upper guide rail 1 and lower guide rail 2 have multiple intermediate positions as they rotate from the initial to the unfolded position, allowing for flexible adjustment to an angle suitable for the user's sitting or reclining posture. In the initial position, the upper guide rail 1 and lower guide rail 2 form an obtuse angle; as they move to the unfolded position, the angle between them gradually increases, thereby enabling the massage chair to function from sitting, backresting, and then reclining.

[0032] like Figure 4 and Figure 6 As shown, in this embodiment, the teeth on the connecting rack 3 have the same pitch as the teeth on the first rack 11 and the second rack 21, and also have the same pitch at the joint of each rack, so that the movement 8 can smoothly pass through the deformed connecting rack 3. This ensures that the pitch between two adjacent racks at the joint remains the same as the pitch of their respective teeth, further ensuring a tight and smooth connection between the racks. It should be understood that the elastic deformation of the connecting rack 3 itself has almost negligible impact on the pitch between the teeth at the joint and the teeth of the first rack 11 or the second rack 21.

[0033] Specifically, one end of the connecting rack 3 is smoothly connected to the first rack 11 through a rack washer 31, and the other end is smoothly connected to the second rack 21 through another rack washer 31, so as to cooperate to construct a whole rack component suitable for the meshing and sliding of the movement 8, ensuring that the movement 8 can move smoothly and without obstruction at all angles of the guide rail frame.

[0034] More preferably, a support plate 4 is horizontally placed between the connecting rack 3 and its rack washer 31. The support plate 4 is similar in shape to the connecting rack 3 and is attached to the side of the connecting rack 3. The two ends of the support plate 4 engage and overlap with the first rack 11 and the second rack 21. Preferably, the support plate 4 is made of a material with high toughness and good elasticity, such as spring steel. The support plate 4, which provides elastic support, is provided at the joints of each rack and on the connecting rack 3, further ensuring the strength and stability of the connecting rack 3 during the movement of the movement 8.

[0035] like Figure 3 and Figure 4 As shown, in this embodiment, the lower guide rail 2 has an elongated sliding groove 22 along its length, suitable for the movement of the second rack 21. After receiving the elastic deformation transmitted by the connecting rack 3, the second rack 21 unloads part of the deformation, converting it into smooth displacement of the second rack 21 in the sliding groove 22. Through the relative movement of the second rack 21 in the sliding groove 22 of the lower guide rail 2, the deformation amplitude of the connecting gear during elastic deformation is greatly reduced, thereby significantly improving the flexibility and operability between the racks.

[0036] Furthermore, the upper guide rail frame 1 has a mounting groove 12 along its length suitable for the first rack 11, and the first rack 11 is fixedly confined within the mounting groove 12. Thus, the first rack 11 located on the upper guide rail frame 1 is configured to be relatively fixed to provide stable positioning of the connecting rack 3 in one direction, while the second rack 21 located on the lower guide rail frame 2 is configured to be relatively movable to provide force-relieving movement of the connecting rack 3 in the opposite direction. Additionally, the second rack 21 reciprocates within its sliding groove 22 along the specified extension direction of the sliding groove 22 to ensure that the second rack 21 is always on the guide path.

[0037] The second rack 21 is movably fixed in the sliding groove 22 via the rack connector 9, guiding the second gear 21 to slide relative to each other within the sliding groove 22. Furthermore, a reinforcing plate 10 is provided between the upper guide rail frame 1 and the lower guide rail frame 2. The reinforcing plate 10 further strengthens the connection between the upper guide rail frame 1 and the lower guide rail frame 2. Additionally, the synchronous sliding of the reinforcing plate 10 during the rotation of the upper guide rail frame 1 and the lower guide rail frame 2 further enhances motion stability.

[0038] like Figure 2 , Figure 3 and Figure 6 As shown, in this embodiment, a hinge shaft 5 and a limiting pin 6 are provided between the upper guide rail frame 1 and the lower guide rail frame 2. The two guide rail frames can rotate around the hinge shaft 5 to adjust their angle. The limiting pin 6 is disposed on one of the guide rail frames, and a corresponding slot 7 for accommodating the limiting pin 6 is provided on the other guide rail frame. It should be noted that the hinge shaft 5 is disposed at the joint above the two guide rail frames, and the limiting pin 6 is disposed at the joint below the two guide rail frames. For details, please refer to the applicant's earlier Chinese patent application, patent number 202210204913.X, which will not be elaborated here.

[0039] This embodiment also provides a massage chair, including a chair frame (not shown), a massage mechanism 8, and the aforementioned massage mechanism travel mechanism for the movement of the massage mechanism 8. The chair frame includes a seat frame and a back frame, with an upper guide rail 1 mounted on the back frame and a lower guide rail 2 mounted on the seat frame. Thus, the rotation angle between the seat frame and the back frame is achieved through the pivotal engagement between the two guide rail frames. Specifically, the angle adjustment can be achieved by extending or retracting a push rod or by the movement of other external mechanisms to rotate the upper guide rail 1 and the lower guide rail 2.

[0040] The mechanism 8 is equipped with a massage structure for providing massage to the user while walking. Clearly, the mechanism 8 has a gear structure that meshes with the rack components (including the first rack 11, the connecting rack 3, and the second rack 21). Two rack components are positioned opposite each other on the chair frame to provide stable support and guide the movement of the mechanism 8.

[0041] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A movement running mechanism, comprising a guide rail member formed by the engagement of an upper guide rail frame and a lower guide rail frame, the guide rail member being adapted for the movement to run freely on a guide path defined by the guide rail frames; the upper guide rail frame and the lower guide rail frame are pivotally connected to each other at a joint, the upper guide rail frame is provided with a first rack, and the lower guide rail frame is provided with a second rack; characterized in that, a connecting rack is further provided and abuts between the first rack and the second rack; the connecting rack is configured to be elastically deformed adaptively when the two guide rail frames are adjusted in rotation angle, so as to maintain smooth engagement between the connecting rack and the first rack and the second rack; and the second rack is configured to be movable relative to the lower guide rail frame and to follow the movement after the deformation of the connecting rack to reduce the deformation amplitude of the connecting rack; the lower guide rail frame is provided with a sliding slot in the form of an oblong hole along the length direction and adapted for the movement of the second rack, the second rack is unloaded partially after receiving the elastic deformation transmitted by the connecting rack and is converted into smooth displacement of the second rack in the sliding slot; the connecting rack is configured as a thermoplastic elastic member, which is in an arc segment in the initial state and gradually tends to be a straight segment after elastic deformation. the upper guide rail frame and the lower guide rail frame are switched from the initial position to the unfolded position to adjust the rotation angle, for implementing the back adjustment of the massage chair; when in the initial position, the connecting rack is correspondingly kept in the initial state without elastic deformation. the teeth on the connecting rack have the same pitch as the teeth on the first rack and the second rack, and have the same pitch at the joint of each rack to enable the movement to smoothly pass through the deformed connecting rack. one end of the connecting rack is smoothly butted against the first rack through a rack washer, and the other end is smoothly butted against the second rack through another rack washer, to cooperatively form an entire rack member adapted for the engagement and sliding of the movement. a support sheet is transversely arranged between the connecting rack and the rack washer, the support sheet is shaped similarly to the connecting rack and is attached to the side surface of the connecting rack, and the two ends of the support sheet are engaged with and overlapped with the first rack and the second rack.

2. The movement according to claim 1, characterized in that the upper guide rail frame is provided with a mounting slot along the length direction and adapted for the first rack, and the first rack is fixedly arranged in the mounting slot.

3. The movement according to claim 1, characterized in that a hinge shaft and a limiting pin are arranged between the upper guide rail frame and the lower guide rail frame, the two guide rail frames are adjusted in rotation angle around the hinge shaft, and the limiting pin is arranged on one of the guide rail frames and the other guide rail frame is correspondingly provided with a strip-shaped slot for the movement of the limiting pin.

4. A movement according to claim 3, characterised in that a chair frame, a movement, and a movement running mechanism according to any one of claims 1-7 for the movement to run; wherein the chair frame comprises a seat frame and a back frame, the upper guide rail frame is mounted on the back frame, and the lower guide rail frame is mounted on the seat frame.

5. A movement according to claim 4, characterised in that ​ 6. The movement according to claim 1, characterized in that ​ 7. The movement according to claim 1, characterized in that ​ 8. A massage chair, characterized by, ​

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