Chair seat linkage mechanism for massage chair

Abstract

The chair seat linkage mechanism comprises a base, a sitting and leaning frame, a shank frame, an electric push rod arranged on the base, a guide rail arranged on the sitting and leaning frame, supporting rollers arranged on the base, swing rods arranged on the two opposite sides, corresponding to the sitting and leaning frame, of the base, and a connecting rod structure used for pushing the shank frame to turn over. The connecting rod structure comprises a sliding connecting rod, a hinged connecting rod and a swinging connecting rod, one end of the sliding connecting rod is hinged to the base, the other end of the sliding connecting rod is hinged to one end of the hinged connecting rod, the other end of the hinged connecting rod is hinged to the swinging connecting rod, and the sliding connecting rod is in linkage fit with the sitting and leaning frame; the guide rails are arranged on the side edges of the sitting and leaning frame, the idler wheels are arranged at the positions, corresponding to the guide rails, of the base, and the swing rod is arranged on the base, so that the sitting and leaning frame can relatively slide back and forth, the structure is relatively simple, and the inherent conditions of the sitting and leaning frame are fully utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of massagers, in particular to a seat linkage mechanism for a massage chair. Background Art

[0002] At present, most massage chairs use two electric push rod motors, one for the zero gravity and zero leaning against the wall of the chair back, and the other for the lifting of the calf and foot support. The relative cost is relatively high, and they must be controlled separately by two control programs, which is prone to errors. Of course, there are also those on the market that use an electric push rod to control the zero leaning against the wall and the lifting of the calf, but its structure is relatively complex, the assembly relationship is relatively intensive, and the production and processing cost is relatively high.

[0003] In the prior art, there is an invention patent application with the patent number "202011556229.5". It is necessary to set an arc guide rail on the base and then perform guided sliding. The arc of its swing is greatly limited by the arc guide rail. Summary of the invention

[0004] The purpose of the utility model: in order to overcome the defects of the prior art, the utility model provides a seat linkage mechanism for a massage chair, wherein a guide rail is provided on the side of the seat frame, rollers are arranged on the base at positions corresponding to the guide rails, and a rocker rod is arranged on the base, so that the relative forward and backward sliding of the seat frame can be realized, and the structure is relatively simple, making full use of the inherent conditions of the seat frame itself.

[0005] The utility model discloses a seat linkage mechanism for a massage chair, which comprises a base, a seat frame that can swing relative to the base, and a calf frame hingedly arranged on the seat frame, and the base is also provided with an electric push rod for driving the seat frame and the calf frame to swing. The utility model is characterized in that: guide rails are arranged on the two opposite sides of the seat frame, support rollers are arranged at positions corresponding to the guide rails on the base, and swing rods are also arranged at positions corresponding to the two opposite sides of the seat frame on the base, the guide rails can slide relative to the support rollers, the support rollers can roll relative to the guide rails, and one end of the swing rod It is hinged on the seat frame, and the other end is hinged on the base. The output end of the electric push rod acts on the seat frame, and also includes a connecting rod structure for pushing the calf frame to flip. The connecting rod structure includes a sliding connecting rod arranged on the base, a hinged connecting rod hinged on the sliding connecting rod, and a swing connecting rod arranged on the seat frame. One end of the sliding connecting rod is hinged on the base, and the other end is hinged to one end of the hinged connecting rod. The other end of the hinged connecting rod is hinged to the swing connecting rod, and the sliding connecting rod is linked with the seat frame. The swing connecting rod can swing to push the calf frame to flip.

[0006] By adopting the above technical scheme, when in use, the seat frame can be supported by the rocker arm and the supporting roller. When the electric push rod drives the seat frame to slide forward, the rocker arm swings relatively, and the guide rail can slide and rotate relative to the supporting roller, thereby making an adaptive adjustment. At the same time, the seat frame will drive the sliding connecting rod to swing, and at this time it will drive the hinged connecting rod to push the swinging connecting rod, thereby lifting the calf frame, thereby realizing that the electric push rod drives the seat frame to lie down and the calf frame to lift. Conversely, the seat frame returns to the sitting state and the calf frame is reset, thereby realizing the relative forward and backward sliding of the seat frame, and the structure is relatively simple, which makes full use of the inherent conditions of the seat frame itself.

[0007] The utility model is further configured as follows: a long slot hole is provided on the sliding connecting rod, a traction rod is provided on the seat frame at a position corresponding to the long slot hole, the traction rod is slidably arranged in the long slot hole and can abut against the inner wall of the long slot hole.

[0008] By adopting the above technical solution, when the seat frame slides relatively, the traction rod can push and pull the inner wall of the long slot hole to drive the sliding connecting rod to swing, and when the seat frame lies down relatively, the sliding amplitude is relatively large, and adaptive avoidance can also be performed by setting the long slot hole.

[0009] The utility model is further configured as follows: the swing link includes a first swing link, a second swing link and a push rod, the first swing link and the second swing link are hinged on the same side of the seat frame, the push rod is hinged on the other side of the first swing link and the second swing link, and the hinged link passes through the first swing link and is hinged to the second swing link.

[0010] By adopting the above technical solution, the push rod is pulled by the first swing link and the second swing link to prevent it from automatically swinging due to gravity, and adaptive relative adjustment can be made to prevent hard collisions, thereby increasing the service life and having a more reasonable structural layout.

[0011] The utility model is further configured as follows: a avoidance cavity is provided on one side of the first swing link facing the second swing link, and the second swing link can swing until a part of it is located in the avoidance cavity.

[0012] By adopting the above technical solution, when the calf frame is in the storage state, the second swing link can be partially located in the avoidance cavity, which can prevent mutual obstruction during storage, and the structural layout is more reasonable.

[0013] The utility model is further configured as follows: a pushing roller is arranged on one end of the pushing rod facing the calf frame.

[0014] By adopting the technical solution, the friction force can be reduced by pushing the roller, thereby preventing the generation of noise and damage to the calf frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model when lying down;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model when lying down;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model when sitting and leaning;

[0018] Figure 4 This is a schematic diagram of the sliding connecting rod structure of the utility model;

[0019] Figure 5 This is a diagram showing the coordination of the seat frame and the connecting rod structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the swing connecting rod structure of the utility model;

[0021] Figure 7 This is a schematic diagram of the base structure of the utility model. DETAILED DESCRIPTION

[0022] The following is a detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings:

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] The utility model discloses a seat linkage mechanism for a massage chair, which includes a base 1, a seat frame 2 that can swing relative to the base 1, and a calf frame 3 hingedly arranged on the seat frame 2. The base 1 is also provided with an electric push rod 4 for driving the seat frame 2 and the calf frame 3 to swing. In the implementation case of the utility model, guide rails 5 are arranged on the opposite sides of the seat frame 2 (it is most preferred to use a C-shaped guide rail that neither affects its relative rotation nor its normal sliding, and it is most preferred to set a blocking piece on the outer side of the guide rail 5 to limit its separation), support rollers 6 are arranged on the base 1 at positions corresponding to the guide rails 5 (the support rollers 6 are most preferably installed using support rods), and swing rods 7 are also arranged on the base 1 at positions corresponding to the opposite sides of the seat frame 2. The guide rails 5 can relatively support The roller 6 slides, and the supporting roller 6 can roll relative to the guide rail 5 (relative rolling can reduce friction). One end of the swing rod 7 is hinged on the seat frame 2, and the other end is hinged on the base 1. The output end of the electric push rod 4 acts on the seat frame 2, and also includes a connecting rod structure 9 for pushing the calf frame 3 to flip. The connecting rod structure 9 includes a sliding connecting rod 91 arranged on the base 1, a hinged connecting rod 92 hinged on the sliding connecting rod 91, and a swing connecting rod 93 arranged on the seat frame 2. One end of the sliding connecting rod 91 is hinged on the base 1, and the other end is hinged to one end of the hinged connecting rod 92. The other end of the hinged connecting rod 92 is hinged to the swing connecting rod 93, and the sliding connecting rod 91 cooperates with the seat frame 2. The swing connecting rod 93 can swing to push the calf frame 3 to flip.

[0025] By adopting the above technical scheme, when in use, the seat frame 2 can be supported by the rocker rod 7 and the supporting roller 6. When the electric push rod 4 drives the seat frame 2 to slide forward, the rocker rod 7 swings relatively, and the guide rail 5 can slide and rotate relative to the supporting roller 6, thereby making an adaptive adjustment. At the same time, the seat frame 2 will drive the sliding connecting rod 91 to swing, and at this time it will drive the hinged connecting rod 92 to push the rocking connecting rod 93, so that the calf frame 3 is lifted, thereby realizing that the electric push rod 4 drives the seat frame 2 to lie down and the calf frame 3 to be lifted. On the contrary, the seat frame 2 returns to the sitting state and the calf frame 3 is reset, so that the relative forward and backward sliding of the seat frame 2 can be realized, and the structure is relatively simple, which makes full use of the inherent conditions of the seat frame 2 itself.

[0026] The sliding link 91 is provided with a long slot hole 911, and a traction rod 10 is provided on the seat frame 2 at a position corresponding to the long slot hole 911. The traction rod 10 is slidably set in the long slot hole 911 and can be against the inner wall of the long slot hole 911. When the seat frame 2 slides relatively, the traction rod 10 can push and pull the inner wall of the long slot hole 911 to drive the sliding link 91 to swing, and when the seat frame 2 lies down relatively, the sliding amplitude is relatively large. By setting the long slot hole 911, adaptive avoidance can also be performed.

[0027] The swing link 93 includes a first swing link 931, a second swing link 932 and a push rod 933. The first swing link 931 and the second swing link 932 are hinged on the same side of the seat frame 2, and the push rod 933 is hinged on the other side of the first swing link 931 and the second swing link 932. The hinged link 92 passes through the first swing link 931 and is hinged with the second swing link 932. The push rod 933 is pulled by the first swing link 931 and the second swing link 932 to prevent it from automatically swinging due to gravity, and can also be adaptively adjusted relative to prevent hard collisions, which can increase the service life and has a reasonable structural layout.

[0028] A avoidance cavity 9311 is provided on the side of the first swing link 931 facing the second swing link 932. The second swing link 932 can be swung until it is partially located in the avoidance cavity 9311. When the calf frame 3 is in the storage state, the second swing link 932 can be partially located in the avoidance cavity 9311, which can prevent mutual obstruction during storage, and the structural layout is relatively reasonable.

[0029] The end of the pushing rod 933 facing the calf frame 3 is provided with a pushing roller 20 , and the pushing roller 20 can reduce friction, thereby preventing noise and damaging the calf frame 3 .

Claims

1. A seat linkage mechanism for a massage chair, comprising a base (1), a seat frame (2) that can swing relative to the base (1), and a calf frame (3) hingedly arranged on the seat frame (2), wherein the base (1) is further provided with an electric push rod (4) for driving the seat frame (2) and the calf frame (3) to swing, characterized in that: Guide rails (5) are arranged on opposite sides of the seat frame (2); support rollers (6) are arranged on the base (1) at positions corresponding to the guide rails (5); and swing rods (7) are arranged on opposite sides of the base (1) corresponding to the seat frame (2); the guide rails (5) can slide relative to the support rollers (6); the support rollers (6) can roll relative to the guide rails (5); one end of the swing rod (7) is hingedly arranged on the seat frame (2); and the other end is hingedly arranged on the base (1); the output end of the electric push rod (4) acts on the seat frame (2), and also includes a push rod for pushing the calf frame (3) ) is a connecting rod structure (9) for tilting, the connecting rod structure (9) comprising a sliding connecting rod (91) arranged on the base (1), a hinged connecting rod (92) hinged on the sliding connecting rod (91), and a swing connecting rod (93) arranged on the seat frame (2), one end of the sliding connecting rod (91) is hingedly arranged on the base (1), and the other end is hingedly connected to one end of the hinged connecting rod (92), the other end of the hinged connecting rod (92) is hingedly connected to the swing connecting rod (93), and the sliding connecting rod (91) and the seat frame (2) are linked and cooperated, and the swing connecting rod (93) can be swung to push the calf frame (3) to tilt.

2. A seat linkage mechanism for a massage chair according to claim 1, characterized in that: The sliding connecting rod (91) is provided with a long slot hole (911), and a traction rod (10) is provided on the seat frame (2) at a position corresponding to the long slot hole (911). The traction rod (10) is slidably arranged in the long slot hole (911) and can abut against the inner wall of the long slot hole (911).

3. A seat linkage mechanism for a massage chair according to claim 1 or 2, characterized in that: The swing link (93) comprises a first swing link (931), a second swing link (932) and a push rod (933); the first swing link (931) and the second swing link (932) are both hingedly arranged on the seat frame (2) on the same side; the push rod (933) is hingedly arranged on the other side of the first swing link (931) and the second swing link (932); and the hinged link (92) passes through the first swing link (931) and is hingedly connected to the second swing link (932).

4. The seat linkage mechanism for a massage chair according to claim 3, characterized in that: A avoidance cavity (9311) is provided on a side of the first swing link (931) facing the second swing link (932), and the second swing link (932) can swing until a portion of it is located in the avoidance cavity (9311).

5. The seat linkage mechanism for a massage chair according to claim 4, characterized in that: A pushing roller (20) is provided on one end of the pushing rod (933) facing the calf frame (3).

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