Large-angle reclining steel frame for massage chair

Abstract

The utility model relates to a big angle lies down steel frame for massage chair, contain chassis, seat frame, back frame, chassis: two bottom bars link first crossbeam, and the bottom bar outside is equipped with the limit stop lever, and the stop lever inboard is equipped with rotatable upper roller, seat frame: can slide along the chassis before and after, and the upper frame and lower frame are connected through the vertical rod and form the accommodation space, and two lower frame bars of lower frame link second crossbeam, and the lower end is equipped with lower roller and bottom bar rolling butt joint, and the outside abuts against the chassis stop lever, and the upper end is pasted with upper roller, two upper frame bars of upper frame front end link third crossbeam, back frame: its lower end part stretches into the accommodation space and articulates the upper frame, and both sides support lever head articulates the upper frame rear end, and the accommodation space inside electric push rod two ends respectively articulate the upper frame third crossbeam and back frame lower end, and drive back frame rotation. Solve the existing massage chair back frame opening angle small, cannot satisfy the technical problem of '' flat lie '' demand, and the poor sliding stability.

Description

Technical Field

[0001] This utility model relates to the field of massage chair accessories technology, specifically a large-angle reclining steel frame for a massage chair that can increase the opening angle of the backrest. Background Technology

[0002] Existing massage chair steel frames often suffer from limited backrest opening angles, making it difficult to meet users' "lying flat" needs. This results in insufficient body fit, affecting comfort and effectiveness. Furthermore, traditional steel frame structures exhibit poor sliding stability, prone to jamming and shifting with prolonged use, shortening the massage chair's lifespan. Therefore, there is an urgent need for a massage chair steel frame structure that can solve these problems. Utility Model Content

[0003] The purpose of this utility model is to overcome the defects of the prior art by providing a large-angle reclining steel frame for a massage chair, which solves the technical problems of the small opening angle of the backrest frame of the existing massage chair, which cannot meet the "flat reclining" requirement, and the poor sliding stability.

[0004] The technical solution of this utility model is: a large-angle reclining steel frame for a massage chair, comprising a base frame, a seat frame, and a back frame. The base frame has a first base rod, a second base rod, and a first crossbeam connected between the two base rods. The outer sides of the first base rod and the second base rod are respectively provided with limiting stops, and the inner sides of the limiting stops are rotatably equipped with upper rollers. The seat frame is slidably mounted on the base frame. The seat frame includes an upper frame, a lower frame, and uprights connecting the two. An accommodating space is formed between the upper frame and the lower frame. The lower frame has a first lower frame rod, a second lower frame rod, and a second crossbeam located between the two lower frame rods. The lower ends of the two lower frame rods are rotatably equipped with lower rollers. The lower frame rods on both sides roll against the corresponding base rods through the lower rollers. The limiting stops on both sides of the base frame abut against the outer side of the corresponding lower frame rods and limit their movement. The upper rollers roll against the upper end face of the lower frame rods. The upper frame has a first upper frame rod, a second upper frame rod, and a third crossbeam connected to the front end of the two frame rods. The lower part of the back frame extends into the accommodating space and is hinged to the upper frame. Support rods are provided on both sides of the back frame, and each support rod is hinged to the rear end of the corresponding upper frame rod. The back frame is driven to rotate by an electric push rod. The electric push rod is located within the accommodating space, and its two ends are respectively hinged to the third crossbeam of the upper frame and the lower end of the back frame.

[0005] By adopting the above technical solution, the dual guiding structure of "limiting stop bar of the base frame + upper and lower rollers" not only realizes the smooth sliding of the seat frame along the base frame, but also restricts its lateral displacement to avoid sliding jamming; while the back frame adopts a design in which the lower part extends into the accommodating space and is hinged to the upper frame. With the drive layout of the electric push rod in the accommodating space, the electric push rod drives the back frame to the maximum opening angle, realizing a near-flat posture adjustment.

[0006] A further feature of this invention is that the two sides of the back frame are connected to the two bottom rods of the base frame by reinforcing rods. The reinforcing rods are bent rod structures, with their two ends hinged to the back frame and the corresponding bottom rods, and their angles adaptively adjusted as the back frame rotates.

[0007] With the above-mentioned further configuration, the reinforcing rod is hinged at both ends and rotates adaptively with the back frame. This not only provides additional support for the back frame and enhances its load-bearing stability, but also avoids structural interference when the back frame rotates, further improving the overall structural strength and motion reliability of the steel frame.

[0008] A further feature of this invention is as follows: a hinge shaft is provided on the head of the support rod, and a hinge seat is provided at the rear end of each upper frame rod. The hinge seat includes a fixed seat and a mating seat. The fixed seat is fixedly connected to the corresponding upper frame rod, and the mating seat and the fixed seat are detachably connected. The mating seat and the fixed seat are combined to form a shaft hole. The hinge shaft is rotatably inserted into the shaft hole and an anti-wear bushing is provided between it and the inner wall of the shaft hole.

[0009] With the above further design, the hinge seat adopts a "fixed seat + detachable mating seat" structure, which facilitates the assembly and subsequent maintenance of the hinge shaft; the wear-resistant bushing reduces the frictional loss between the hinge shaft and the shaft hole, extends the service life of the hinge structure, and ensures the smoothness of the back frame rotation.

[0010] A further feature of this invention is as follows: a seat plate is fixed on the upper frame, and a back plate is provided on the upper part of the back frame. The adjacent ends of the seat plate and the back plate are respectively provided with a first inclined surface and a second inclined surface. When the back frame is reclined, the second inclined surface of the back plate is rotated to the lower side of the first inclined surface of the seat plate.

[0011] By further configuring the above, a first inclined surface and a second inclined surface are respectively set at the adjacent ends of the seat plate and the back plate. When the back frame moves the back plate to lie down, the second inclined surface of the back plate can be rotated to the lower part of the first inclined surface of the seat plate. The two inclined surfaces form a matching space avoidance structure to avoid mechanical interference between the seat plate and the back plate during the rotation of the back frame, and ensure that the back frame can lie down smoothly at a large angle.

[0012] A further feature of this invention is that the outer sides of the first upper frame rod and the second upper frame rod are respectively provided with fixing rods, the seat plate is connected between the fixing rods on both sides, and the outer side of the seat plate also has a notch for accommodating the fixing rods.

[0013] By further configuring the above-mentioned features, fixing rods are installed on the outer sides of the upper frame rods on both sides of the upper frame. The seat plate is connected between the fixing rods on both sides, which can form symmetrical support for the seat plate on both sides with the help of the fixing rods. This greatly improves the load-bearing strength of the seat plate and prevents the seat plate from sinking in the middle or deforming at the edges when under pressure. At the same time, notches are provided on the outer side of the seat plate to accommodate the fixing rods, so that the fixing rods and the seat plate form an "embedded" assembly relationship. This not only eliminates the structural redundancy caused by exposed fixing rods and makes the overall appearance of the steel frame simpler, but also restricts the lateral displacement of the seat plate and further enhances the stability of the seat plate assembly.

[0014] A further feature of this invention is that the lower ends of both the first base rod and the second base rod are equipped with foot pads and movable rollers, and the bottom surface of the foot pads is provided with anti-slip texture.

[0015] With the above-mentioned further design, the adjustable foot pads can adapt to ground with different flatness levels, ensuring that the steel frame is placed stably; the movable casters facilitate the overall relocation of the massage chair. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a specific embodiment of the present utility model; Figure 2 This is a structural diagram of the base frame of a specific embodiment of the present utility model; Figure 3 This is an assembly drawing of the base plate according to a specific embodiment of the present utility model; Figure 4 This is a structural diagram of the frame according to a specific embodiment of the present utility model; Figure 5 This is a structural diagram of the hinge seat according to a specific embodiment of the present utility model; Figure 6 This is a structural diagram of the back frame according to a specific embodiment of the present utility model; Figure 7 This is a diagram showing the lying-down state of a specific embodiment of the present invention.

[0017] In the diagram: Base frame 1, Seat frame 2, Back frame 3, Electric push rod 4, Reinforcing rod 5, Hinge shaft 6, Hinge seat 7, Anti-wear bushing 8, Seat plate 9, Back plate 10, Fixing rod 20, Foot pad 30, Moving roller 40, First bottom rod 11, Second bottom rod 12, First crossbeam 13, Limiting stop rod 14, Upper roller 15, Upper frame 21, First upper frame rod 211, Second upper frame rod 212, Third crossbeam 213, Lower frame 22, First lower frame rod 221, Second lower frame rod 222, Second crossbeam 223, Upright rod 23, Accommodation space 24, Lower roller 25, Support rod head 31, Fixing seat 71, Alignment seat 72, Shaft hole 73, First inclined surface 91, Notch 92, Second inclined surface 101. Detailed Implementation

[0018] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figure 1-7 As shown, the present invention relates to a large-angle reclining steel frame for a massage chair, comprising a base frame 1, a seat frame 2, and a back frame 3. The base frame 1 has a first base rod 11, a second base rod 12, and a first crossbeam 13 connected between the two base rods. The base rods and the crossbeam are steel pipe structures and welded together. The outer sides of the first base rod 11 and the second base rod 12 are respectively provided with limiting stops 14. The inner side of the limiting stops 14 is rotatably equipped with upper rollers 15. The lower ends of the first base rod 11 and the second base rod 12 are each equipped with foot pads 30 and movable rollers 40. The bottom surface of the foot pads 30 is provided with anti-slip textures. The foot pads and movable rollers are detachable. The seat 2 is slidably mounted on the base frame 1. The seat 2 includes an upper frame 21, a lower frame 22, and a vertical pole 23 connecting the two. An accommodating space 24 is formed between the upper frame 21 and the lower frame 22. The lower frame 22 has a first lower frame rod 221, a second lower frame rod 222, and a second crossbeam 223 located between the two lower frame rods. The lower frame rods and the crossbeam are steel pipe structures and are welded together. The lower ends of the two lower frame rods are respectively rotatably equipped with lower rollers 25. The lower frame rods on both sides roll against the corresponding bottom rods through the lower rollers 25. The limiting stops 14 on both sides of the base frame 1 respectively abut against the outer side of the corresponding lower frame rods and limit their movement. The upper rollers 15 roll against the upper end surface of the lower frame rods. The upper frame 21 has a first upper frame rod 211, a second upper frame rod 212, and a third crossbeam 213 connected to the front end of the two frame rods. The upper frame rods and the third crossbeam are steel pipe structures and are welded together. The lower part of the back frame 3 extends into the accommodating space 24 and is hinged to the upper frame 21. Support rod heads 31 are fixed or integrally provided on both sides of the back frame 3. Each support rod head 31 is hinged to the rear end of the corresponding upper frame rod. The back frame 3 is driven to rotate by an electric push rod 4. The electric push rod 4 is located in the accommodating space 24, and its two ends (fixed end and telescopic end) are respectively hinged to the third crossbeam 213 of the upper frame 21 and the lower end of the back frame 3.

[0020] Specifically, the back frame 3 is connected to the two bottom rods of the base frame 1 on both sides by reinforcing rods 5. The reinforcing rods 5 are bent rod structures, with their two ends hinged to the back frame 3 and the corresponding bottom rods, and their angles adaptively adjusted as the back frame 3 rotates.

[0021] Specifically, the support rod head 31 is provided with a hinge shaft 6, and the rear end of each upper frame rod is provided with a hinge seat 7. The hinge seat 7 includes a fixed seat 71 and a mating seat 72. The fixed seat 71 is fixedly connected to the corresponding upper frame rod, and the mating seat 72 is detachably connected to the fixed seat 71. The mating seat 72 and the fixed seat 71 are combined to form a shaft hole 73. The hinge shaft 6 is rotatably inserted into the shaft hole 73 and an anti-wear bushing 8 is provided between it and the inner wall of the shaft hole 73.

[0022] Specifically, a seat plate 9 is fixed on the upper frame 21, and a back plate 10 is provided on the upper part of the back frame 3. The adjacent ends of the seat plate 9 and the back plate 10 are respectively provided with a first inclined surface 91 and a second inclined surface 101. When the back frame 3 is reclined, the second inclined surface 101 of the back plate 10 rotates to be below the first inclined surface 91 of the seat plate 9. Fixing rods 20 are respectively provided on the outer sides of the first upper frame rod 211 and the second upper frame rod 212. The seat plate 9 is screwed between the fixing rods 20 on both sides, and the outer side of the seat plate 9 also has a notch 92 for accommodating the fixing rods.

[0023] When installing this utility model, 1. Base frame assembly: Weld the first crossbeam to the first and second base rods to form the base frame; weld the limiting stops to the outside of the two base rods, and assemble the rollers on the inside of the limiting stops via bearings; finally, install adjustable foot pads and movable rollers at the lower ends of the two base rods to complete the base frame assembly.

[0024] 2. Seat frame assembly: The upper frame, lower frame and upright are welded to form the main body of the seat frame. The lower ends of the first and second lower frame rods of the lower frame are equipped with lower rollers through bearings. The seat frame is placed on the base frame, so that the lower rollers roll and fit against the base rods. At the same time, the limit stop is adjusted to abut against the outer side of the lower frame rods to ensure that the upper rollers fit against the upper end face of the lower frame rods, thus completing the installation of the seat frame and the base frame.

[0025] 3. Assembly of back frame and drive components: Extend the lower end of the back frame into the accommodating space of the seat frame and hinge it to the upper frame through the hinge shaft; weld the support rod heads on both sides of the back frame so that the support rod heads are hinged to the rear end of the upper frame rod; hinge the two ends of the electric push rod to the third crossbeam of the upper frame and the lower end of the back frame respectively; install the reinforcing rod so that the reinforcing rod is hinged to the back frame and the bottom rod respectively, and complete the overall assembly.

[0026] Achieving a large-angle lying down movement: When the user activates the reclining function, the electric push rod retracts, pulling the back frame to rotate clockwise around the hinge point, and the seat frame slides forward along the base frame via the lower rollers, thereby increasing the opening angle of the back frame and realizing the massage chair in a "flat" state. During the process, the reinforcing rod adaptively adjusts the tilt angle as the back frame rotates, always providing support for the back frame, and the second inclined surface (101) of the back plate (10) rotates to be below the first inclined surface (91) of the seat plate (9).

[0027] During the sliding process, the limiting stop bar of the base frame restricts the lateral displacement of the seat frame. The double rolling cooperation between the upper roller and the upper end face of the lower frame rod, and between the lower roller and the base rod, ensures that the seat frame slides smoothly without jamming.

[0028] It should be noted that in the description of this utility model, all directional indicators (such as up, down, forward, backward, etc.) are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0029] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A reclining steel frame for a massage chair, comprising a base frame (1), a seat frame (2), and a back frame (3), characterized in that: The base frame (1) has a first base rod (11), a second base rod (12) and a first crossbeam (13) connected between the two base rods. The outer sides of the first base rod (11) and the second base rod (12) are respectively provided with limiting stops (14), and the inner side of the limiting stops (14) is rotatably equipped with upper rollers (15). The seat (2) is slidably mounted on the base frame (1). The seat (2) includes an upper frame (21), a lower frame (22), and a vertical rod (23) connecting the two. An accommodating space (24) is formed between the upper frame (21) and the lower frame (22). The lower frame (22) has a first lower frame rod (221), a second lower frame rod (222), and a second crossbeam (223) located between the two lower frame rods. The lower ends of the two lower frame rods are respectively rotatably equipped with lower rollers (25). The lower frame rods on both sides roll against the corresponding base rods through the lower rollers (25). The limiting stops (14) on both sides of the base frame (1) respectively abut against the outer side of the corresponding lower frame rods and limit their movement. The upper rollers (15) roll against the upper end surface of the lower frame rods. The upper frame (21) has a first upper frame rod (211), a second upper frame rod (212), and a third crossbeam (213) connected to the front end of the two frame rods. The lower part of the back frame (3) extends into the accommodating space (24) and is hinged to the upper frame (21). Support rod heads (31) are provided on both sides of the back frame (3). Each support rod head (31) is hinged to the rear end of the corresponding upper frame rod. The back frame (3) is driven to rotate by an electric push rod (4). The electric push rod (4) is located in the accommodating space (24), and its two ends are respectively hinged to the third crossbeam (213) of the upper frame (21) and the lower end of the back frame (3).

2. The large-angle reclining steel frame according to claim 1, characterized in that: The back frame (3) is connected to the two bottom rods of the base frame (1) on both sides by reinforcing rods (5). The reinforcing rods (5) are bent rod structures, with their two ends hinged to the back frame (3) and the corresponding bottom rods, and their angles adaptively adjusted as the back frame (3) rotates.

3. The large-angle reclining steel frame according to claim 1, characterized in that: The support rod head (31) is provided with a hinge shaft (6), and the rear end of each upper frame rod is provided with a hinge seat (7). The hinge seat (7) includes a fixed seat (71) and a mating seat (72). The fixed seat (71) is fixedly connected to the corresponding upper frame rod. The mating seat (72) is detachably connected to the fixed seat (71), and the mating seat (72) and the fixed seat (71) are combined to form a shaft hole (73). The hinge shaft (6) is rotatably inserted into the shaft hole (73) and an anti-wear bushing (8) is provided between it and the inner wall of the shaft hole (73).

4. The large-angle reclining steel frame according to claim 1, 2, or 3, characterized in that: A seat plate (9) is fixed on the upper frame (21), and a back plate (10) is provided on the upper part of the back frame (3). The adjacent ends of the seat plate (9) and the back plate (10) are respectively provided with a first inclined surface (91) and a second inclined surface (101). When the back frame (3) is laid down, the second inclined surface (101) of the back plate (10) is rotated to the lower part of the first inclined surface (91) of the seat plate (9).

5. The large-angle reclining steel frame according to claim 4, characterized in that: The first upper frame rod (211) and the second upper frame rod (212) are respectively provided with fixing rods (20), the seat plate (9) is connected between the fixing rods (20) on both sides, and the seat plate (9) also has a notch (92) for accommodating the fixing rods on the outside.

6. The large-angle reclining steel frame according to claim 1, 2, or 3, characterized in that: The lower ends of the first base rod (11) and the second base rod (12) are equipped with foot pads (30) and moving rollers (40), and the bottom surface of the foot pads (30) is provided with anti-slip texture.

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