Massage chair frame

Abstract

The utility model relates to a massage chair frame which comprises a base frame, a cushion frame, a backrest frame, a leg and foot frame and an electric push rod. Wherein the backrest frame is hinged to a rear stand column of the base frame through a hinge shaft A and can swing around the hinge shaft A in a continuously changing sitting and lying mode under the driving of the electric push rod; the rear portion of the cushion frame is hinged to the backrest frame through a hinge shaft B, the middle of the cushion frame is movably positioned on a front stand column of the base frame, when the backrest frame swings to the lying posture state, the cushion frame moves forwards, the front end of the cushion frame is lowered, the cushion frame is close to the horizontal state, and when the backrest frame swings to the sitting posture state, the cushion frame retreats, the front end of the cushion frame is raised, and the cushion frame does not slide forwards. The leg and foot frame is hung on the front edge of the cushion frame and driven by a synchronizing mechanism or an independent push rod linked with the cushion frame to swing. The seat cushion frame and the backrest frame are of a split structure and have relative degree of freedom, the included angles of sitting and lying are different, particularly, the human body is more stretched in the lying posture, and ergonomic design is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to massage chair technical field, especially relate to a massage chair frame, especially the scheme of more comfortable lying. BACKGROUND

[0002] Massage chair function mainly provides the whole body massage, from the chair frame, there are two kinds, one is seat cushion frame and backrest frame angle adjustable, need to be matched with partition setting massage machine core, two is seat cushion frame and backrest frame angle constant, configure L type track, so that a massage machine core can reciprocating massage up and down.L Type track is often more difficult to process into shape, and still need to have a rack fixed on the surface, considering the reliable meshing of the walking gear on the massage machine core and the curve rack, need to carry out necessary design to the track.In addition, the integrated L type track also has a defect, that is, the angle between the hip and the back is constant, whether sitting or lying is the same angle, in order to ensure the sitting posture, the lying comfort is affected, that is, the leg cannot be stretched out.L Type track massage chair, whether in sitting or lying state, when the massage machine core passes through the sacrococcygeal part, the resistance is large, and the reaction force is also large, resulting in human body discomfort.

[0003] How to provide a more reasonable technical scheme, namely, the object of the present application. SUMMARY

[0004] The utility model aims at designing a massage chair frame with comfortable angles of sitting and lying positions.

[0005] The utility model technical scheme is realized as follows: a massage chair frame, including base frame, seat cushion frame, backrest frame, leg frame and electric push rod, the backrest frame is at the rear part of the seat cushion frame, and both are movably arranged on the base frame, and the seat cushion frame and the backrest frame are driven to swing by the electric push rod, the leg frame is suspended at the front end of the seat cushion frame and can swing along with the seat cushion frame, characterized in that: the backrest frame is hinged to the rear stand column of the base frame through a hinge shaft A and can swing around the hinge shaft A continuously in sitting and lying states under the drive of the electric push rod, the rear part of the seat cushion frame is hinged to the backrest frame through a hinge shaft B, and the middle part is movably positioned on the front stand column of the base frame, when the backrest frame swings to the lying position, the seat cushion frame moves forward and the front end lowers, the seat cushion frame approaches the horizontal state, when the backrest frame swings to the sitting position, the seat cushion frame retreats and the front end rises, and the seat cushion frame does not slide forward when falling, the leg frame is suspended at the front edge of the seat cushion frame and is driven to swing by the synchronous mechanism linked with the seat cushion frame or the independent push rod.

[0006] A downward guide groove is arranged in the middle front part of the seat cushion frame, a fulcrum wheel is arranged on the front stand column, and the seat cushion frame is movably positioned by cooperating with the guide groove and the fulcrum wheel.

[0007] The backrest frame is locked with a curve track, the curve track has an extension segment extending to the lower side of the seat cushion frame, and the extension segment is close to the lower side of the seat cushion frame in the lying position.

[0008] The connecting part of the curve track and the extension section is a circular arc structure, the curvature radius R is between 450mm and 510mm, and the arc length L is between 180mm and 230mm.

[0009] One end of the electric push rod is hingedly connected to the crossbeam of the extension section of the curve track, and the other end is hingedly connected to the base frame.

[0010] The extension section of the curve track is further provided with a handrail frame.

[0011] The hinging shaft B is located in front of the hinging shaft A and is arranged on the extension section of the curve track.

[0012] The synchronous mechanism comprises a supporting rod and a swing rod, one end of the swing rod is hingedly connected to the front end of the cushion frame, the other end is provided with a roller capable of abutting against the back of the leg and foot frame, one end of the supporting rod is hingedly connected to the middle part of the swing rod, and the other end is hingedly connected to the base frame; during the lowering process of the front end of the cushion frame, the middle part of the swing rod is tilted forward with the hinging point of the supporting rod as the fulcrum, and the leg and foot frame is lifted.

[0013] The cushion frame and the back frame are in a split structure, have relative freedom, and swing with the back frame, and are adapted to continuous change of sitting and lying, the angle between the cushion frame and the back frame is small in a sitting position, and the angle between the cushion frame and the back frame is large in a lying position, the human body is more relaxed in the lying position, the extension section of the curve track is matched, the massage core can walk to the root of the thigh, and a large range massage is met. The whole has the characteristics of unique conception, simple structure, non-forward movement in a sitting position and horizontal tendency in a lying position, especially when lying flat, the human body is more relaxed, the large range walking massage is matched, the human body is more relaxed, and the sleeping effect is promoted. BRIEF DESCRIPTION OF DRAWINGS

[0014] The application will be further described below in combination with specific examples:

[0015] Figure 1 It is a sitting position schematic view of the massage chair frame

[0016] Figure 2 It is a sitting position exploded schematic view of the massage chair frame

[0017] Figure 3 It is a sitting position side view schematic view of the massage chair frame

[0018] Figure 4 It is Figure 3 It is a base frame-free schematic view

[0019] Figure 5 It is a lying position side view schematic view of the massage chair frame

[0020] Figure 6 It is Figure 5 It is a base frame-free schematic view

[0021] Figure 7 Schematic diagram of a curved track

[0022] in

[0023] 1—Base frame; 11—Front column; 12—Rear column; 13—Pivot wheel;

[0024] 2—Seat cushion frame; 21—Guide groove;

[0025] 3—Backrest frame;

[0026] 4—Legged scaffolding;

[0027] 5—Electric linear actuator;

[0028] 6—Synchronization mechanism; 61—Support rod; 62—Swing rod; 63—Roller;

[0029] 7—Curved track; 71—Extension section; 72—Handrail; 73—Crossbeam;

[0030] A, B—Hinge axes; R—Radius of curvature; L—Arc length; Detailed implementation method:

[0031] Reference Figures 1 to 6 The massage chair frame includes a base frame 1, a seat cushion frame 2, a backrest frame 3, a leg support 4, and an electric push rod 5. Except for the electric push rod, all these components are frame structures welded from steel pipes or angle steel, with a width suitable for sitting or reclining. The backrest frame 3 is hinged to the rear column 12 of the base frame via a hinge axis A. Driven by the electric push rod 5, it can continuously swing around the hinge axis A, changing between sitting and reclining positions. In other words, the backrest frame 3 is the main swinging element, with the others acting as follow-up movements.

[0032] The rear of the seat cushion frame 2 is hinged to the backrest frame 3 via hinge shaft B, and its middle part is movably positioned on the front upright 11 of the base frame. When the backrest frame 3 swings to a reclining position, the seat cushion frame 2 moves forward and its front end lowers, making the seat cushion frame 2 nearly horizontal. This, together with the reclining backrest frame 3, creates a relatively flat surface, allowing the human body to lie more comfortably. When the backrest frame 3 swings to a sitting position, the seat cushion frame 2 moves backward and its front end rises, preventing the human body from sliding forward after sitting down, which is ergonomic. The front upright 11 and rear upright 12 of the base frame mentioned here refer to their relative front and rear positions.

[0033] A downward-facing guide groove 21 is provided at the front of the seat cushion frame 2, and a fulcrum wheel 13 is provided on the front upright 11. The seat cushion frame 2 is positioned by means of the guide groove 21 and the fulcrum wheel 13. The cooperation of the two forms the movable fulcrum for the swing of the seat cushion frame 2, so that the seat cushion frame 2 can swing in a compound manner with the backrest frame 3. That is, it can swing in an arc around the hinge axis B, and can also be pushed and pulled to move back and forth. Especially when pushed forward, the guide groove 21 can also quickly descend along the fulcrum wheel 13, so that the front end of the seat cushion frame can quickly lower to a near horizontal design angle.

[0034] As a preferred embodiment, the backrest frame 3 has an inherent curved track 7 for the reciprocating massage mechanism. Furthermore, the lower part of the curved track 7 has an extension section 71 extending to the underside of the seat cushion frame 2, which lies close to the underside of the seat cushion frame 2 in a lying position. This allows the massage mechanism to move under the seat cushion frame 2 when lying down, expanding the massage area to the groin region. This overcomes the discomfort caused by traditional massages that circle the sacrum and coccyx.

[0035] Furthermore, the connection between the curved track 7 and the extension section 71 is an arc structure, with a radius of curvature R between 450mm and 510mm and an arc length L between 180mm and 230mm. Figure 7 The curved track 7 is designed primarily for reclining comfort, while the sitting posture is adjusted by the seat cushion 2 following the swaying motion, ensuring that both sitting and reclining positions are at a reasonable and comfortable angle.

[0036] In the field of massage chair frame technology, since the track is the main load-bearing component and is formed into a track groove structure, it becomes the main body of the structure. The seat cushion frame 2 and backrest frame 3 are only made of square tubes and are only used to suspend the seat cushion and backrest, so their functions are relatively weakened. Therefore, the following detailed structures are also available:

[0037] One end of the electric push rod 5 is hinged to the crossbeam 73 of the extended section of the curved track, and the other end is hinged to the base frame 1, realizing a direct drive to push the backrest frame 3 to lie flat. Multiple crossbeams 73 are welded between the two curved tracks 7 to provide rigidity; the foremost crossbeam 73 serves as the driving force point. Figure 4 It is also easy to see that one end of the electric push rod 5 can also be hinged to the crossbeam at the backrest section of the curved track, and the backrest frame 3 can be pulled flat by the retraction of the electric push rod 5.

[0038] Furthermore, an armrest frame 72 is fixed to the extension section 71 of the curved track, so that the angle between the armrest and the backrest is constant, and the arms remain still during the adjustment of the human body in sitting and lying positions.

[0039] Additionally, the hinge axis B of the hinged seat cushion frame 2 is located in front of the hinge axis A and is set on the extension section 71 of the curved track. It is lower and more forward than the hinge axis A. As the backrest frame 3 and the curved track 7 swing, the rear end of the seat cushion frame 2 is quickly raised and pushed forward to facilitate rapid adjustment of the angle of the seat cushion frame 2.

[0040] The above example uses a single electric actuator 5 to achieve a continuous change from a sitting to a lying position. The leg support 4 is relatively more independent; therefore, it can be driven by either an independent actuator (electric actuator) or a linkage mechanism. The specific structure of the linkage mechanism is as follows:

[0041] The leg support 4 is suspended from the front edge of the seat cushion frame 2, and is driven to swing by the synchronization mechanism 6 linked to the seat cushion frame 2. The synchronization mechanism 6 includes a support rod 61 and a swing rod 62. One end of the swing rod 62 is hinged to the front end of the seat cushion frame 2, and the other end is provided with a roller 63 that can abut against the back of the leg support 4. One end of the support rod 61 is hinged to the middle of the swing rod 62, and the other end is hinged to the base frame 1. The leg support 4 follows the lifting process, which is also the process of the chair frame turning to lie flat. At this time, the front end of the seat cushion frame 2 is also lowered. The middle of the swing rod 62 tilts forward with the hinge point of the support rod 61 as the fulcrum, and lifts the leg support 4. In fact, the synchronization mechanism 6 is also a kind of compound motion. In addition to the swinging process, except for the end of the support rod 61 that is hinged to the base frame 1, which does not move, the rest of the synchronization mechanism also moves forward. The support rod 61 tilts forward quickly, so that the roller 63 at one end of the swing rod 62 is lifted quickly, which meets the requirements of consistent linkage.

Claims

1. A massage chair frame, comprising a base frame (1), a seat cushion frame (2), a backrest frame (3), a leg support frame (4), and an electric push rod (5); the backrest frame (3) is located at the rear of the seat cushion frame (2), and both are movably mounted on the base frame (1), and the seat cushion frame (2) and the backrest frame (3) are driven to swing by the electric push rod (5); the leg support frame (4) is suspended at the front end of the seat cushion frame (2) and can swing with the seat cushion frame (2); characterized in that: The backrest frame (3) is hinged to the rear column (12) of the base frame via hinge shaft A. Driven by the electric push rod (5), it can swing continuously around the hinge shaft A to change between sitting and lying down. The rear part of the seat cushion frame (2) is hinged to the backrest frame (3) via hinge shaft B, and the middle part is movably positioned on the front column (11) of the base frame. When the backrest frame (3) swings to the lying position, the seat cushion frame (2) moves forward and the front end lowers, and the seat cushion frame (2) is close to the horizontal position. When the backrest frame (3) swings to the sitting position, the seat cushion frame (2) moves backward and the front end rises, and it does not slide forward when sitting down. The leg support (4) is suspended at the front edge of the seat cushion frame (2) and is driven to swing by the synchronous mechanism (6) linked to the seat cushion frame (2) or by an independent push rod.

2. A massage chair frame according to claim 1, characterized in that: A downward guide groove (21) is provided at the front of the seat frame (2), and a pivot wheel (13) is provided on the front column (11). The seat frame (2) is positioned by means of the guide groove (21) and the pivot wheel (13).

3. A massage chair frame according to claim 1 or 2, characterized in that: The backrest frame (3) is locked to a curved track (7), and the lower part of the curved track (7) has an extension section (71) extending to the lower side of the seat cushion frame (2). In the reclining position, the extension section (71) is close to the lower part of the seat cushion frame (2).

4. A massage chair frame according to claim 3, characterized in that: The connection between the curved track (7) and the extension section (71) is an arc structure with a radius of curvature R between 450mm and 510mm and an arc length L between 180mm and 230mm.

5. A massage chair frame according to claim 3, characterized in that: One end of the electric push rod (5) is hinged to the crossbeam (73) of the extended section of the curved track, and the other end is hinged to the base frame (1).

6. A massage chair frame according to claim 3, characterized in that: Handrails (72) are also installed on the extended section (71) of the curved track.

7. A massage chair frame according to claim 3, characterized in that: The hinge shaft B is located in front of the hinge shaft A and is set on the extension (71) of the curved track (7).

8. A massage chair frame according to claim 1, characterized in that: The synchronization mechanism (6) includes a support rod (61) and a swing rod (62). One end of the swing rod (62) is hinged to the front end of the seat frame (2), and the other end is provided with a roller (63) that can abut against the back of the leg frame (4). One end of the support rod (61) is hinged to the middle of the swing rod (62), and the other end is hinged to the base frame (1). During the process of lowering the front end of the seat frame (2), the middle of the swing rod (62) tilts forward with the hinge point of the support rod (61) as the fulcrum, and raises the leg frame (4).

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