Variable-angle continuous guide rail structure

Abstract

The invention discloses a guide rail structure, provides a variable-angle continuous guide rail structure which is simple in structure, low in manufacturing cost and capable of automatically changing a track corner according to use requirements, and solves the technical problems of high cost, complex structure, poor stability and the like of a variable-angle continuous guide rail in the prior art. The device comprises a base body and a pressure walking mechanism arranged on the base body, an elastic track is suspended on the base body, and the pressure walking mechanism walks on the elastic track in a meshed mode through a walking gear.

Description

Technical Field

[0001] The present invention relates to a guide rail structure, and in particular to a variable-angle continuous guide rail structure which has a simple structure, low manufacturing cost, and can automatically change the track angle according to use requirements. Background Art

[0002] Guide rails are widely used in various fields as a conveying structure. Common guide rails are generally linear. When the conveying direction needs to be changed, due to cost issues, the change of the guide rail direction is often achieved by connecting and assembling several guide rails. For example, when applied to health care equipment such as massage chairs or massage beds, due to the physiological curvature of the human body when sitting, when massaging the legs and back of the human body, the guide rails used to transmit the massage movement are often composed of two sections, namely the leg guide rail and the back guide rail. However, due to the change in the guide rail angle, the massage movement will produce obvious jumping and abnormal noise when passing through the guide rail connection, resulting in a deterioration in massage experience and comfort. For this reason, existing massage chairs or massage beds have improved the guide rail connection, such as the Chinese patent C Patent No. N116763616A, named "Guide Rails and Massage Chair Frames", although it realizes the smooth conversion between the guide rails, thereby solving the obvious jumping and abnormal noise of the massage movement when passing through the guide rail connection, its structure is extremely complex. Not only are the manufacturing and assembly costs high, but the complexity of the structure also leads to low reliability in use. At the same time, since the leg guide rails and the back guide rails are both rigid structures and rigid connections, the massage movement cannot automatically compensate and adjust according to the changes in the physiological curvature of the human body during massage, that is, it cannot adapt to the physiological curvature of the human body or the changes in the physiological curvature of massage personnel of different heights and body shapes. Therefore, all massage individuals suffer from a certain degree of uncomfortable massage squeezing, and the massage experience and comfort are poor. Summary of the Invention

[0003] The present invention mainly provides a variable angle continuous guide rail structure with simple structure, low manufacturing cost, and the ability to automatically change the track angle according to usage requirements, thereby solving the technical problems of variable angle continuous guide rails in the prior art, such as high cost, complex structure, and poor stability.

[0004] The present invention also provides a massage chair with a variable angle continuous guide rail structure that has a simple structure, greatly reduces manufacturing and assembly costs, and can automatically compensate and adjust the massage amplitude according to changes in the physiological curvature of the human body, so as to adapt to the physiological curvature and changes in physiological curvature of different human bodies and improve massage comfort. It solves the technical problems of the prior art such as high cost, complex structure, poor structural stability, and poor massage experience and comfort of the variable angle continuous guide rail.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: a variable angle continuous guide rail structure, including a base and a pressure walking mechanism arranged on the base, an elastic track is suspended on the base, and the pressure walking mechanism walks on the elastic track through the engagement of walking gears. A pressure travel mechanism refers to a travel mechanism that produces pressure in conjunction with an elastic track. That is, the pressure travel mechanism generates pressure on the elastic track while traveling along the elastic track. For example, a massage movement and its associated track in a massage chair or massage bed. During massage, the massage movement moves up and down along the track to massage the back and legs. During this process, the track, as the carrier of the movement, must bear the weight of the movement and the reaction force of the movement during massage. In traditional structures, the weight and reaction force are generally borne by the track and the base serving as the track. Therefore, the track is rigidly fixed to the base, resulting in a complex structure and assembly process. In this technical solution, the elastic track that cooperates with the pressure travel mechanism is suspended on the base. The elastic track's deformability allows the track's transmission direction to be variable, and the elastic track's rigidity can also bear the pressure travel mechanism's own weight and reaction force, achieving continuous track angle variation. This eliminates the need for a transition track and simplifies the structure. The suspended installation method also significantly simplifies the assembly process. In particular, when the pressure travel mechanism generates force, the elastic track's deformability enables automatic compensation of feed amount, making it more suitable for structures requiring adaptive compensation and adjustment, such as massage movements.

[0006] Preferably, the elastic track comprises an elastic base strip made of metal, with a plurality of meshing holes provided on the elastic base strip, with the travel gears meshing with the meshing holes. The elastic track may also be made of other non-metallic materials with a certain degree of elasticity and strength. Metal materials are easy to purchase and low in cost. The elastic track may also be provided with raised racks on the elastic base strip made of metal, which mesh with the travel gears. The elastic base strip made of metal not only satisfies the track's deformation capacity but also has sufficient strength to withstand the pressure, gravity, and reaction force of the travel mechanism itself. Compared with providing raised racks on the elastic base strip, providing meshing holes on the elastic base strip for meshing with the travel gears provides a simpler structure and lowers manufacturing cost.

[0007] More preferably, an auxiliary pressure wheel is coaxially connected to one side of the traveling gear corresponding to the elastic base strip. The outer diameter of the auxiliary pressure wheel is slightly larger than the root diameter of the traveling gear. The auxiliary pressure wheel and the traveling gear are coaxially arranged to prevent wear on the roots of the traveling gear teeth, while ensuring that the elastic base strip is flat, allowing the traveling gear to smoothly engage with the meshing hole.

[0008] Preferably, a positioning sleeve is rotatably connected to a gear shaft near the travel gear, and is provided with an upper radial limit needle roller and a lower radial limit needle roller. The elastic base strip is rollingly clamped between the upper radial limit needle roller and the lower radial limit needle roller. The positioning sleeve serves as a carrier for the upper and lower radial limit needle rollers. By providing the upper and lower radial limit needle rollers, when the travel gear meshes and travels along the elastic track, at least one of the upper radial limit needle roller or the lower radial limit needle roller rolls or slides on the front or back side of the elastic base strip. That is, when the elastic track turns upward, the upper radial limit needle roller contacts the front side of the elastic base strip, thereby ensuring good meshing of the travel gear and the meshing hole, and vice versa. Therefore, the provision of the upper and lower radial limit needle rollers ensures the stability of the pressure travel mechanism when the track turns, that is, no corner jump or abnormal noise occurs.

[0009] More preferably, three upper radial limit needle rollers and three lower radial limit needle rollers are provided on the positioning sleeve in parallel and coplanar configurations, and are symmetrically distributed relative to the gear shaft. The positioning sleeve can be symmetrically provided with two upper and lower radial limit needle rollers. The addition of a center upper and lower radial limit needle roller can engage with the auxiliary pressure wheel on the other side of the travel gear, thereby preventing wear on the travel gear tooth roots and further ensuring a flat elastic base strip, allowing the travel gear to smoothly engage the meshing hole.

[0010] More preferably, a rear end surface limiting needle roller is provided on the positioning sleeve corresponding to the side surface of the elastic base strip, which plays a role of lateral limiting for the elastic base strip, thereby ensuring the stable operation of the pressure walking mechanism.

[0011] As a more preferred embodiment, the positioning sleeve and the outer cover of the traveling gear are provided with a protective cover which plays the role of protection and storage.

[0012] Preferably, a front U-shaped slider is provided at the other end of the pressure travel mechanism opposite the travel gear. An elastic track passes through an opening of the front U-shaped slider. Front needle rollers are provided on the front U-shaped slider corresponding to the front and back sides of the elastic track. The front U-shaped slider is rolled and clamped on the elastic track by the front needle rollers. The front U-shaped slider serves as another support point for the pressure travel mechanism, which can maintain its stability. The support point can also be a roller or slider directly mounted on the elastic track in a rolling or sliding manner. By providing the front U-shaped slider and clamping the elastic track, the pressure travel mechanism can be prevented from partially detaching from the elastic track during use or transportation, thereby improving safety.

[0013] More preferably, a front end limit needle roller is provided on the front U-shaped slider corresponding to the side of the elastic base strip. The front end limit needle roller also plays a role in lateral limitation of the elastic base strip, ensuring the stable operation of the pressure walking mechanism.

[0014] A massage chair with a variable-angle continuous guide rail structure comprises a base body serving as the seat frame, elastic rails symmetrically fixed to the left and right sides of the seat frame and backrest frame of the seat frame, and a pressure travel mechanism serving as the massage mechanism. The variable-angle continuous guide rail structure is used in massage chairs. The elastic rails' deformability allows for changes in the rail's transmission direction, while their strength meets the requirements for bearing the weight and reaction force of the pressure travel mechanism. This allows for smooth and continuous rail angle changes without requiring transition rails, resulting in a simple structure and a suspended installation method that significantly simplifies the assembly process. In particular, the elastic rails' deformability enables automatic compensation of feed rate when the pressure travel mechanism generates force. During massage, when the body's physiological curvature changes, such as at protruding joints or bones, the elastic rails undergo localized micro-deformation to offset the massage feed in that area, achieving a smooth transition throughout the massage and enhancing massage comfort. Similarly, this structure allows for adaptability to the varying physiological curvatures of different users, meeting the needs of people of varying heights and weights while achieving the same massage effect. This is a feature currently unavailable in massage chairs.

[0015] Therefore, the variable angle continuous guide rail structure and the massage chair with the variable angle continuous guide rail structure of the present invention have the following advantages: 1. The elastic track is suspended, and the deformation ability of the elastic track is used to achieve the change of the track transmission direction. The strength of the elastic track is used to achieve the reaction force of the pressure-bearing walking mechanism. There is no need to set up a transition track, and the track can be continuously changed in angle. It has a simple structure and low assembly cost. 2. By setting meshing holes on the elastic base strip of metal material to mesh with the travel gear, the structure is simpler, easier to process, lower manufacturing cost, and the meshing connection of the travel gear is more stable; 3. The setting of upper and lower radial limit needle rollers ensures smooth engagement of the running gears when the track turns, ensuring that no corner jump or abnormal noise occurs; 4. When the variable-angle continuous guide rail structure is used in a massage chair, it not only achieves a silky-smooth transition of the corners during the massage process, but can also adapt to the changes in the physiological curvature of the human body of different users, automatically compensate for the intensity, and meet the needs of people of different heights and weights while achieving the same massage effect. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a structural schematic diagram of a variable angle continuous guide rail structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the local structure; Figure 3 This is a partial structural diagram of a massage chair with a variable-angle continuous guide rail structure according to the present invention; Figure 4 yes Figure 3 Partial exploded view. DETAILED DESCRIPTION The technical solution of the present invention will be further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0016] Example 1: like Figure 1 and Figure 2As shown, a variable angle continuous guide rail structure of the present invention includes a base (not shown in the figure), the two ends of the elastic track 3 are fixed on the base, so that the elastic track 3 is in a suspended state, the elastic track 3 includes a long elastic base strip 31 made of steel plate, and a plurality of meshing holes 32 are opened on the elastic base strip 31 at equal distances along the length direction. The pressure walking mechanism 2 can walk along the length direction of the elastic track 3, and when walking, one end of the pressure walking mechanism 2 is meshed with the meshing hole 32 through the walking gear 4. An auxiliary pressure wheel 8 is coaxially connected to the outer side of the walking gear 4 corresponding to the elastic base strip 31, and is close to the walking gear. A U-shaped positioning sleeve 6 is rotatably connected to the gear shaft 5 on the inner side of the wheel 4. A U-shaped needle roller positioning sleeve is embedded in the opening of the U-shaped positioning sleeve 6. Three upper radial limit needle rollers 71 and three lower radial limit needle rollers 72 are rotatably installed in the opening of the U-shaped needle roller positioning sleeve. The three upper radial limit needle rollers 71 and the three lower radial limit needle rollers 72 are all coplanar and equidistantly arranged, and both are symmetrically distributed relative to the gear shaft 5. When the running gear 4 engages with the meshing hole 32 for movement, the elastic base strip 31 is rolled and clamped between the upper radial limit needle rollers 71 and the lower radial limit needle rollers 72. Two rear end face limit needle rollers 91 are also installed on the positioning sleeve 6 corresponding to the inner side of the elastic base strip 31. The rear end face limit needle rollers 91 are located on both sides of the three upper radial limit needle rollers 71 and the three lower radial limit needle rollers 72 and are perpendicular to the elastic base strip 31. The front U-shaped slider 11 is installed at the other end of the pressure walking mechanism 2 opposite to the walking gear 4, and the elastic track 3 passes through the opening of the front U-shaped slider 11 in parallel. Three front needle rollers 12 are installed in the openings of the front U-shaped slider 11 corresponding to the front and back sides of the elastic track 3, and the upper and lower three front needle rollers 12 correspond to each other one by one and are the same size. The rotating shaft of the front needle roller 12 is perpendicular to the length direction of the elastic track 3, and then the front U-shaped slider 11 rolls and clamps the elastic track 3 through the upper and lower three front needle rollers 12, and rotates on the front U-shaped slider 11 corresponding to the inner side of the elastic base strip 31 to connect the two front end limit rollers Needle 92, two front face limiting needle rollers 92 are located on both sides of the upper front needle roller 12 and are perpendicular to the surface of the elastic base strip 31. When the elastic track 3 deviates inward, the elastic base strip 31 and the rear face limiting needle roller 91 or the front face limiting needle roller 92 are connected in a rolling manner, thereby limiting the inward deviation of the elastic track 3. Similarly, the base corresponding to the rear face limiting needle roller 91 and the front face limiting needle roller 92 also has a structure to prevent the elastic track 3 from deviating outward. It can be the same or similar to the rear face limiting needle roller 91 and the front face limiting needle roller 92, or other limiting structures can be used to ensure that the pressure walking mechanism 2 can walk safely and smoothly on the elastic track 3. For safety, dustproofing, assembly, etc., a protective cover 10 is installed on the outer cover of the positioning sleeve 6 and the walking gear 4. For the same reason, a protective shell is also installed on the outer cover of the front U-shaped slider 11.

[0017] Example 2: like Figure 3 and Figure 4As shown, a massage chair with a variable-angle continuous guide rail structure according to the present invention comprises a seat frame (not shown) as the base, elastic rails 3 symmetrically fixed to the left and right sides of the seat frame and backrest frame, and a pressure-operated travel mechanism 2 as the massage mechanism. The remaining components are identical to those of Example 1.

[0018] The specific embodiments described herein are merely illustrative of the concepts of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A variable angle continuous guide rail structure, comprising a base and a pressure walking mechanism (2) provided on the base, characterized in that: An elastic track (3) is suspended on the base (1), and the pressure running mechanism (2) runs on the elastic track (3) through meshing with a running gear (4).

2. The variable angle continuous guide rail structure according to claim 1, characterized in that: The elastic track (3) comprises an elastic base strip (31) made of metal material. A plurality of meshing holes (32) are provided on the elastic base strip (31), and the running gear (4) meshes with the meshing holes (32).

3. The variable angle continuous guide rail structure according to claim 2, characterized in that: One side of the traveling gear (4) corresponding to the elastic base strip (31) is coaxially connected to the auxiliary pressure wheel (8).

4. The variable angle continuous guide rail structure according to claim 2, characterized in that: A positioning sleeve (6) is rotatably connected to a gear shaft (5) near the traveling gear (4), and an upper radial limiting needle roller (71) and a lower radial limiting needle roller (72) are provided on the positioning sleeve (6). The elastic base strip (31) is rollingly clamped between the upper radial limiting needle roller (71) and the lower radial limiting needle roller (72).

5. The variable angle continuous guide rail structure according to claim 4, characterized in that: Three upper radial limiting needle rollers (71) and three lower radial limiting needle rollers (72) are provided on the positioning sleeve (6) in parallel and on the same plane, and both are distributed in a left-right symmetrical manner relative to the gear shaft (5).

6. The variable angle continuous guide rail structure according to claim 4, characterized in that: A rear end surface limiting roller needle (91) is provided on the positioning sleeve (6) corresponding to the side surface of the elastic base strip (31).

7. The variable angle continuous guide rail structure according to claim 4, characterized in that: A protective cover (10) is installed on the outer cover of the positioning sleeve (6) and the traveling gear (4).

8. The variable angle continuous guide rail structure according to claim 1, characterized in that: A front U-shaped slider (11) is provided at the other end of the pressure travel mechanism (2) opposite to the travel gear (4); the elastic track (3) passes through an opening of the front U-shaped slider (11); a front needle roller (12) is provided on the front U-shaped slider (11) corresponding to the front and back sides of the elastic track (3); and the front U-shaped slider (11) is rollingly clamped on the elastic track (3) by the front needle roller (12).

9. The variable angle continuous guide rail structure according to claim 8, characterized in that: A front end surface limiting roller needle (92) is provided on the front U-shaped slider (11) corresponding to the side surface of the elastic base strip (31).

10. A massage chair with the variable angle continuous guide rail structure according to claim 1, characterized in that: The base is a seat bracket of the massage chair, the elastic track (3) is symmetrically fixed on the left and right sides of the seat bracket and the backrest bracket of the seat bracket, and the pressure walking mechanism (2) is a massage movement of the massage chair.

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