Massage chair frame with lower limbs capable of swinging interactively

Abstract

The invention relates to a massage chair frame with lower limbs capable of swinging interactively. The massage chair frame with the lower limbs capable of swinging interactively comprises a backrest frame, a cushion frame, a bottom frame, a track, a main electric push rod and a leg and foot frame hinged to the front end of the cushion frame. The track stretches across and is fixed between the backrest frame and the cushion frame, the cushion frame is arranged above the bottom frame, and the backrest frame and the cushion frame can move back and forth relative to the bottom frame under the driving of the main electric push rod and complete the continuous change between a sitting posture and a lying posture; wherein the leg frame is divided into a left leg frame and a right leg frame, and the left leg frame and the right leg frame are respectively hung at the front end of the cushion frame through coaxial shaft sections and are jointly driven by a power mechanism combined by two auxiliary electric push rods to alternately lift and swing. According to the massage chair, the left leg and the right leg are separately designed, the left leg stand and the right leg stand can be alternately lifted and dropped under the driving of the power mechanism, the requirements of different personalized massage trainings are met, and the functions of the massage chair are enriched.

Description

Technical fields:

[0001] This invention belongs to the field of massage chair technology, and specifically relates to a massage chair frame with interactive lower limb swinging, especially with separate leg supports that can swing independently. Background technology:

[0002] Current massage chairs all feature forward and backward movement and continuous changes between sitting and reclining positions, but the adjustment movements are relatively limited. A massage chair is essentially a complete, functional unit built upon a lower limb-swinging massage frame, with various massage components installed, soft padding, and a cover. The lower limb-swinging massage frame generally includes: a backrest, seat cushion, base, rails, and electric actuators, as well as a leg support hinged to the front of the seat cushion. The rails come in two types: integrated L-shaped rails and segmented rails. Both rails span the backrest and seat cushion and are fixed to them. Driven by the electric actuators, the backrest, seat cushion, and leg support can move forward and backward relative to the base, allowing for continuous changes between sitting and reclining positions. The leg support also moves synchronously, gradually rising to be level with the seat cushion when shifting to a reclining position. However, currently, the leg support is always integrated, meaning the legs can only rise or fall synchronously, failing to meet the personalized needs of asynchronous left and right leg movements.

[0003] The subject of this invention is how to provide a more personalized massage solution. Summary of the Invention:

[0004] The purpose of this invention is to design a massage chair frame with separate leg supports that allow for independent swinging of the lower limbs.

[0005] The technical solution of this invention is implemented as follows: a massage chair frame with alternating lower limb swing, comprising: a backrest frame, a seat cushion frame, a base frame, a track, and a main electric push rod, as well as a leg support hinged to the front end of the seat cushion frame; the track spans and is fixed between the backrest frame and the seat cushion frame, the seat cushion frame is positioned above the base frame, and under the drive of the main electric push rod, the backrest frame and the seat cushion frame can move back and forth relative to the base frame, completing continuous changes between sitting and lying positions; the leg support is characterized in that: the leg support is divided into a left leg support and a right leg support, the left leg support and the right leg support are respectively suspended at the front end of the seat cushion frame through coaxial shaft segments, and are driven alternately to rise and swing by a power mechanism composed of two auxiliary electric push rods.

[0006] The power mechanism includes a first set of electric push rods, a second set of electric push rods, a slide, a swing arm, and a linear guide rail. The linear guide rail is fixed to the seat frame or the lower crossbeam of the track in a front-to-back direction. The slide is locked to the slider of the linear guide rail and can move back and forth under the drive of the first set of electric push rods. The middle axis of the swing arm is positioned in the middle of the slide, one end of which is connected to the left leg support via a left support rod, and the other end is connected to the right leg support via a right support rod. The lower side of one end of the swing arm is also hinged to a second set of electric push rods, and the other end of the second set of electric push rods is hinged to the crossbeam of the seat frame. The swing arm is driven by the second set of electric push rods to swing. The swing of the swing arm relative to the slide can drive the left leg support and the right leg support to rise and fall alternately.

[0007] The left support rod, the right support rod, and the second electric push rod are all hinged at both ends to the swing rod, the left leg bracket, and the right leg bracket respectively via a hinge seat with bidirectional swing.

[0008] The hinge seat has the following structure: 1. Vertical bidirectional, the hinge seat is provided with holes for two hinge shafts to pass through in the vertical direction; 2. Ball head seat, one end of the ball head is connected to the left support rod, the right support rod and the second set of electric push rods; 3. Universal joint.

[0009] The first and second electric actuators are integrated electric actuators or motor rack and pinion assemblies; the motor rack and pinion assembly includes a motor, a gearbox, a rack, and a retaining box. The motor is connected to the gearbox, a gear is fixed on the output shaft of the gearbox, the rack meshes with the gear, and the retaining box, which is rotatably positioned on the output shaft, maintains the rack's swingable meshing structure.

[0010] This invention features a separate design for the left and right leg supports, which, driven by a power mechanism, allow the left and right leg supports to rise and fall alternately, meeting the needs of different personalized massage training and enriching the functions of the massage chair. Attached image description:

[0011] The invention will be further described below with reference to specific figures:

[0012] Figure 1 A side view of the massage chair frame in its initial state with alternating lower limb movements.

[0013] Figure 2 Schematic diagram of the initial state of the massage chair frame with alternating lower limb swinging.

[0014] Figure 3 Top view of the massage chair frame in its initial state with alternating lower limb movements.

[0015] Figure 4 A top-view diagram of the massage chair frame swinging with alternating lower limb movements.

[0016] Figure 5 A top-down view of the massage chair frame swinging with alternating lower limb movements.

[0017] Figure 6 A side view of the massage chair frame in a swinging state, showing the alternating swinging of the lower limbs.

[0018] Figure 7 A schematic diagram of the swinging motion of the massage chair frame with alternating lower limb swinging.

[0019] Figure 8 Exploded view of a massage chair frame with alternating lower limb movement

[0020] Figure 9 Schematic diagram of the massage chair frame tilt angle driven by a motor and rack combination

[0021] Figure 10 Schematic diagram of motor rack and pinion drive structure

[0022] in

[0023] 1—Backrest frame;

[0024] 2—Seat cushion frame;

[0025] 3—Base frame;

[0026] 4—track; 41—beam;

[0027] 5—Main electric actuator;

[0028] 6—Legged frame; 61—Left leg; 62—Right leg; 63—Axle section;

[0029] 7—Power mechanism; 71—First set of electric actuators; 72—Second set of electric actuators; 73—Slide plate; 74—Swing arm;

[0030] 75—Linear guide rail; 76—Left support rod; 77—Right support rod;

[0031] 8—Hinged joint;

[0032] 9—Motor and rack assembly; 91—Motor; 92—Gearbox; 921—Output shaft; 93—Rack; 94—Retainer box; 95—Gear; Detailed implementation method:

[0033] Reference Figures 1 to 8 The massage chair frame with lower limb interactive swinging includes: a backrest frame 1, a seat cushion frame 2, a base frame 3, a track 4, and a main electric push rod 5, as well as a leg support 6 hinged to the front end of the seat cushion frame 2; the track 4 spans and is fixed between the backrest frame 1 and the seat cushion frame 2, the seat cushion frame 2 is set above the base frame 3, and under the drive of the main electric push rod 5, the backrest frame 1 and the seat cushion frame 2 can move back and forth relative to the base frame 3, and complete the continuous change between sitting and lying positions, realizing the zero-gravity adjustment process without occupying the rear space, which meets the requirements of placing the massage chair against the wall, which is also the function of existing conventional massage chairs.

[0034] The track 4 is generally an L-shaped track, or the track 4 can be the main body, while the backrest frame 1 and the seat cushion frame 2 are fixed on the backrest section and the seat cushion section of the track 4 respectively, and a crossbeam 41 is set between the two tracks 4 or the backrest frame 1 and the seat cushion frame 2 to form an integral whole that can move relative to the base frame 3.

[0035] The leg support 6 is divided into a left leg support 61 and a right leg support 62. The left leg support 61 and the right leg support 62 are suspended from the front end of the seat cushion frame 2 by coaxial shaft segments 63, and are driven by a power mechanism 7 composed of two auxiliary electric push rods to swing left and right alternately up and down. In addition to massage, it can also train the knee joint.

[0036] The power mechanism 7 includes a first set of electric push rods 71, a second set of electric push rods 72, a slide plate 73, a swing rod 74, and a linear guide rail 75. The linear guide rail 75 is fixed to the lower crossbeam of the seat frame 2 or the track 4 in a front-back direction. The slide plate 73 is locked to the slider of the linear guide rail 75 and can move back and forth under the drive of the first set of electric push rods 71. The middle axis of the swing rod 74 is located in the middle of the slide plate 73. One end is connected to the left leg support 61 through the left support rod 76, and the other end is connected to the right leg support 62 through the right support rod 77. The lower side of one end of the swing rod 74 is also hinged to the second set of electric push rods 72. The other end of the second set of electric push rods 72 is hinged to the crossbeam of the seat frame 2. The second set of electric push rods 72 drives the swing rod 74 to swing. The swing of the swing rod 74 relative to the slide plate 73 can drive the left leg support 61 and the right leg support 62 to rise and fall alternately.

[0037] Furthermore, the left support rod 76, the right support rod 77, and the second electric push rod 72 are all hinged to the swing rod 74, the left leg bracket 61, and the right leg bracket 62 respectively through the hinge seat 8 with bidirectional swing, satisfying the swing freedom in two directions.

[0038] The hinge seat 8, which allows for bidirectional swing, has the following structure: First, it is vertically bidirectional; the hinge seat 8 is provided with holes for two hinge axes to pass through in the vertical direction, such as... Figure 8 The hinge is a sheet metal part, which has low processing cost and is easy to assemble.

[0039] Second, the ball joint, with one end of the ball joint connecting to the left support rod, the right support rod, and the second electric push rod, allows for adjustment in more than two directions, and is more free and flexible; Third, the universal joint has the same function as the former.

[0040] The work process begins in a seated position, such as... Figures 1 to 3The first set of electric push rods 71 ​​and the second set of electric push rods 72 are both extended, the slide 73 is located at the rear of the seat cushion frame, and the left leg support 61 and the right leg support 62 are both in the lowered state; if the left and right legs are raised and lowered synchronously, the first set of electric push rods 71 ​​and the second set of electric push rods 72 are simultaneously contracted and extended, so that the synchronous movement of the legs can be achieved.

[0041] When the alternating leg raising and lowering mode is selected, the first electric push rod 71 retracts first, driving the skateboard 73 and leading the swing arm 74 to the front of the seat frame. Because one end of the swing arm 74 is constrained by the second electric push rod 72, it rotates and lifts the right leg support 62 through the right support rod 77. After being lifted to the designed height, the action of the first electric push rod 71 stops, and the second electric push rod 72 retracts. The retraction process is also the process of driving the swing arm 74 to swing around the fulcrum positioned on the skateboard. This swing stroke causes the left leg support 61 to rise and the right leg support 62 to fall. The extension and retraction of the second electric push rod 72, with the help of the swing arm 74, drives the alternating raising and lowering of the left and right leg supports.

[0042] The second electric push rod 72 retracts, the left leg rest 61 lowers to its position, and the movement stops. The first electric push rod 71 then extends, driving the sliding plate 73 to retract to its position, restoring the sitting posture. Since this structure only improves the raising and lowering of the leg rest and does not hinder the adjustment of the massage chair backrest to the lying position, which is still controlled by the main electric push rod 5, the above description does not address the lying posture.

[0043] Reference Figure 9 and Figure 10 The first electric actuator 71 and the second electric actuator 72 are either integrated electric actuators or motor rack and pinion assemblies 9. The motor rack and pinion assembly includes a motor 91, a gearbox 92, a rack 93, and a retaining box 94. The motor 91 is connected to the gearbox 92. A gear 95 is fixed on the output shaft 921 of the gearbox. The rack 93 meshes with the gear 95, and the retaining box 94, rotatably positioned on the output shaft, maintains the swingable meshing structure of the rack 93. In this example, the rack 93 uses a swingable meshing mechanism, providing more flexible changes in the drive angle. In this case, the gearbox 92 can be rotatably positioned on the crossbeam 41 to accommodate changes in the horizontal plane angle. Alternatively, the meshing angle of the rack 93 can be fixed, in which case it functions similarly to an integrated electric actuator.

Claims

1. A massage chair frame for alternating lower limb oscillation, the massage chair frame comprising: The backrest frame (1), seat cushion frame (2), base frame (3), track (4) and main electric push rod (5), and leg support (6) hinged to the front end of seat cushion frame (2); the track (4) spans and is fixed between the backrest frame (1) and seat cushion frame (2), the seat cushion frame (2) is set above the base frame (3), and under the drive of the main electric push rod (5), the backrest frame (1) and seat cushion frame (2) can move back and forth relative to the base frame (3) and complete the continuous change between sitting and lying posture; the characteristic is that the leg support (6) is divided into a left leg support (61) and a right leg support (62), the left leg support (61) and the right leg support (62) are respectively suspended at the front end of seat cushion frame (2) through coaxial shaft segments (63), and are driven alternately to lift and swing by a power mechanism (7) composed of two auxiliary electric push rods.

2. The massage chair frame with lower limb interactive swinging as described in claim 1, characterized in that: The power mechanism (7) includes: a first set of electric push rods (71), a second set of electric push rods (72), a slide plate (73), a swing rod (74), and a linear guide rail (75); the linear guide rail (75) is fixed to the seat frame or the lower crossbeam (41) of the track in a front-back direction, the slide plate (73) is locked to the slider of the linear guide rail (75), and can move back and forth under the drive of the first set of electric push rods (71); the middle shaft of the swing rod (74) is positioned in the middle of the slide plate (73), and one end is connected to the left support rod ( 76) Connected to the left leg support (61) and the other end connected to the right leg support (62) via the right support rod (77). The lower side of one end of the swing rod (74) is also hinged to a second electric push rod (72). The other end of the second electric push rod (72) is hinged to the crossbeam (41) of the seat frame (2). The swing rod (74) is driven by the second electric push rod (72) to swing. The swing of the swing rod (74) relative to the skateboard (73) can drive the left leg support (61) and the right leg support (62) to alternately rise and fall.

3. A massage chair frame with alternating lower limb swinging as described in claim 2, characterized in that: The left support rod (76), the right support rod (77), and the second electric push rod (72) are all hinged at both ends to the swing rod (74), the left leg bracket (61), and the right leg bracket (62) respectively through the hinge seat (8) with bidirectional swing.

4. A massage chair frame with alternating lower limb swinging as described in claim 3, characterized in that: The hinge seat (8) has the following structure:

1. Vertical bidirectional, the hinge seat is provided with holes for the two hinge shafts to pass through in the vertical direction; 2. Ball head seat, one end of the ball head is connected to the left support rod (76), the right support rod (77) and the second electric push rod (72); 3. Universal joint.

5. A massage chair frame with alternating lower limb swinging as described in claim 2, 3, or 4, characterized in that: The first set of electric push rods (71) and the second set of electric push rods (72) are integrated electric push rods or motor rack and pinion assemblies (9); the motor rack and pinion assembly includes a motor (91), a gearbox (92), a rack (93) and a retaining box (94). The motor (91) is connected to the gearbox (92) for transmission. A gear (95) is fixed on the output shaft (921) of the gearbox. The rack (93) meshes with the gear (95), and the retaining box (94) rotatably positioned on the output shaft maintains the swingable meshing structure of the rack (93).

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