Massage chair frame and massage chair

Abstract

Disclosed are a massage chair frame and a massage chair. The chair frame comprises a base frame, a seat frame, a backrest frame, and a first driving mechanism. The seat frame is provided with a hinge point. The backrest frame comprises a backrest portion and a protruding portion disposed at the bottom of the backrest portion, with the end of the protruding portion hinged to the hinge point of the seat frame. One end of the first driving mechanism is hinged to the seat frame, and the other end stretchably pushes the backrest frame, thereby driving the backrest frame to flip relative to the seat frame. The first driving mechanism is located below the hinge point and the backrest portion, allowing the backrest frame to rotate around the hinge point to an orientation lower than the horizontal plane of the hinge point. The base frame is provided with a guide rail structure extending in the anterior-posterior direction, and the seat frame is correspondingly provided with a roller set that slidably engages with the guide rail structure. The base frame is further provided with a second driving mechanism connected to the seat frame to drive the seat frame to move reciprocally along the guide rail structure. According to the present invention, the backrest frame can recline to a negative angle orientation, thus facilitating the stretching exercises for the human body.

Description

Massage chair frame and massage chair Technical Field

[0001] The present invention relates to the technical field of massage, and in particular to a massage chair frame and a massage chair. Background Art

[0002] The frame of a massage chair in the prior art generally includes a base frame, a seat frame, a backrest frame, and a calf frame. In some cases, the seat frame and backrest frame are fixed as a whole and can move relative to the base frame to achieve functions such as zero leaning against the wall or zero gravity. However, the angle between the seat frame and the backrest frame is fixed, usually greater than 90° but less than 180°, making it impossible for consumers to adjust the angle between the seat frame and the backrest frame during use. Some massage chairs can adjust the angle between the seat frame and the backrest frame, and the seat frame can move forward and backward, or be raised or lowered by flipping. However, the backrest frame cannot be tilted backward to a negative angle, making it inconvenient for the human body to perform stretching exercises. Technical issues

[0003] In response to the technical problems existing in the prior art, the present invention provides a massage chair frame and a massage chair, which can not only adjust the angle between the back frame and the seat frame, but also allow the back frame to be tilted backward to a negative angle state, thereby facilitating stretching movements for the human body. Technical Solutions

[0004] The technical solution adopted by the present invention to solve its technical problems is: a massage chair frame, including a base frame, a seat frame, a backrest frame, and a first driving mechanism, the seat frame is provided with a hinge point, the backrest frame includes a backrest portion and a protrusion arranged at the bottom of the backrest portion, the extension direction of the protrusion intersects with the extension direction of the backrest portion, and the end of the protrusion is hinged to the hinge point of the seat frame; one end of the first driving mechanism is hinged to the seat frame, and the other end can telescopically push the backrest frame to drive the backrest frame to flip relative to the seat frame, the first driving mechanism is located below the hinge point and the backrest portion, so that the backrest frame can rotate around the hinge point to an angle lower than the horizontal plane where the hinge point is located.

[0005] The base frame is provided with a guide rail structure, which extends in the front-to-back direction; the seat frame is provided with a roller group corresponding to the guide rail structure, and the roller group is slidably fitted with the guide rail structure; the base frame is provided with a second driving mechanism, which is connected to the seat frame to drive the seat frame to move back and forth on the guide rail structure.

[0006] Furthermore, a backrest pivot seat is correspondingly provided at the top rear portion of the seat frame, and the end of the protrusion is hinged to the backrest pivot seat so that the backrest portion can be rotated to a position horizontal or at a negative angle to the seat frame; a backrest fixed end ear seat is provided at the bottom front end of the seat frame, and one end of the first driving mechanism is hinged to the backrest fixed end ear seat; a backrest movable end ear seat is provided at the bottom of the backrest frame, and the other end of the first driving mechanism is hinged to the backrest movable end ear seat.

[0007] Furthermore, the backrest frame includes an upper frame body and a lower frame body, the lower frame body includes a cross bar and a plurality of connecting parts distributed on the cross bar along the left and right directions, each connecting part respectively has a first side extending upward, the first side is connected to the upper frame body to form the backrest portion, and each connecting part respectively has a second side extending forward, the second side constitutes the protrusion; the backrest movable end ear seat is arranged on the cross bar.

[0008] Furthermore, the bottom of the upper frame body is connected to a latch box corresponding to the first side of each connecting portion, and each latch box is respectively inserted into the first side of the corresponding connecting portion.

[0009] Furthermore, the guide rail structure includes a front guide rail and a rear guide rail, the front guide rail includes an ascending section that is higher in the front and lower in the rear, and the rear guide rail is located behind the ascending section and is lower than the front end of the ascending section; the roller group includes front rollers and rear rollers distributed in sequence along the front and rear directions, the front rollers are slidably fitted with the front guide rail, and the rear rollers are slidably fitted with the rear guide rail.

[0010] Furthermore, the front guide rail also includes a first extension section extending backward from the rear end of the ascending section, and the rear guide rail includes a descending section that is lower in front and higher in the rear and a second extension section extending upward from the rear end of the descending section, and the descending section is located above the first extension section; the descending section is in an inclined state, and the ascending section is arc-shaped.

[0011] Furthermore, there are multiple guide rail structures, and the multiple guide rail structures are distributed along the left-right direction.

[0012] Furthermore, the tilting angle of the backrest frame relative to the horizontal plane is 112° to 188.5°; the angle of the seat frame relative to the horizontal plane can reach 4° to 36.5°; and the first driving mechanism is a backrest push rod.

[0013] Furthermore, it also includes a calf frame and a third driving mechanism, the calf frame is hinged to the front end of the seat frame, one end of the third driving mechanism is hinged to the seat frame, and the other end can telescopically push the calf frame to drive the calf frame to flip relative to the seat frame; the second driving mechanism is a seat frame push rod, and the movable part of the seat frame push rod is hinged to the seat frame; the third driving mechanism is a calf push rod.

[0014] The present invention further provides a massage chair, comprising the massage chair frame as described above. Beneficial effects

[0015] 1. Since the bottom of the backrest frame is hinged to the seat frame, one end of the first driving mechanism is hinged to the seat frame, and the other end can telescopically push the backrest frame to drive the backrest frame to flip relative to the seat frame, and the first driving mechanism is located below the hinge point and the backrest portion, so that the backrest frame can rotate around the hinge point to an angle lower than the horizontal plane where the hinge point is located; the base frame is provided with a guide rail structure, and the guide rail structure extends in the front and rear directions; the seat frame is provided with a roller group corresponding to the guide rail structure, and the roller group is slidably matched with the guide rail structure; the base frame is provided with a second driving mechanism, which is connected to the seat frame to drive the seat frame to move back and forth on the guide rail, so that the present invention can not only adjust the angle between the backrest frame and the seat frame, but also make the backrest frame fall backward to a negative angle state, thereby facilitating the human body to perform stretching movements.

[0016] 2. The seat frame of the present invention can realize forward and backward movement and flip functions, thereby achieving zero leaning against the wall or zero gravity functions. Therefore, the chair frame of the present invention can realize multi-position adjustment to adapt to various usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the massage chair frame and the massage chair of the present invention are not limited to the embodiments.

[0018] FIG1 is an exploded schematic diagram of a chair frame of the present invention.

[0019] FIG2 is a schematic diagram of the three-dimensional structure of the chassis of the present invention.

[0020] FIG3 is a partial enlarged schematic diagram of the cooperation between the base frame and the seat frame of the present invention.

[0021] FIG4 is a partial enlarged schematic diagram of the cooperation between the backrest frame and the seat frame of the present invention.

[0022] FIG5 is a partial enlarged schematic diagram of the cooperation between the seat frame and the calf frame of the present invention.

[0023] FIG6 is a schematic diagram of the three-dimensional structure of the chair frame of the present invention in a lying state.

[0024] FIG7 is a schematic diagram of the three-dimensional structure of the chair frame of the present invention in a stretched state.

[0025] FIG8 is a side view of the chair frame of the present invention in a stretched state.

[0026] FIG9 is a schematic diagram of the three-dimensional structure of the chair frame of the present invention in a zero-gravity state.

[0027] FIG10 is a schematic diagram of the three-dimensional structure of the chair frame of the present invention in a V-shaped state.

[0028] In the figure, 1, backrest frame, 11, backrest fixed end ear seat, 12, backrest push rod, 13, latch box, 14, lower frame, 141, cross bar, 142, first side, 143, second side, 15, backrest movable end ear seat, 16, upper frame, 17, backrest pin, 18, backrest shaft seat, 21, calf frame, 22, calf ear seat, 23, calf push rod, 24, calf anti-pinch ear seat, 25, calf fixed ear seat, 26, Calf tension spring; 3. Base frame, 31 / 37. Rear guide rail, 32 / 36. Front guide rail, 33. Side frame, 34. Front cross beam, 35. Seat frame fixing ear seat, 38. Rear cross beam, 39. Rising section, 310. First extension section, 311. Descending section, 312. Second extension section, 41. Seat frame, 42. Seat frame bushing, 43. Front roller, 44. Pin, 45. Seat frame ear seat, 46. Seat frame push rod, 47. Rear roller. Best Mode for Carrying Out the Invention

[0029] Type here the best mode description paragraph of the invention. Modes for Carrying Out the Invention

[0030] In the present invention, the terms "first", "second", "third", etc. are only used to distinguish similar objects, rather than to describe a specific order or precedence, and cannot be understood as indicating or implying relative importance. In the description, the directions or positional relationships indicated by "upper", "lower", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, unless otherwise specified and limited, the terms "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can also mean the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.

[0032] Referring to Figures 1-10, a massage chair frame of the present invention includes a base frame 3, a seat frame 41, a backrest frame 1, a calf frame 21, and a first drive mechanism. The seat frame 41 is provided with a hinge point. The backrest frame 1 includes a backrest portion and a protrusion provided at the bottom of the backrest portion. The protrusion extends in a direction intersecting with the direction of extension of the backrest portion, and the distal end of the protrusion is hinged to the hinge point of the seat frame 41. One end of the first drive mechanism is hinged to the seat frame 41, and the other end telescopically pushes the backrest frame 1 to drive the backrest frame 1 to flip relative to the seat frame 41. The first drive mechanism is located below the hinge point and the backrest portion, allowing the backrest frame 1 to rotate about the hinge point to an angle below the horizontal plane of the hinge point. The base frame 3 is provided with multiple guide rail structures distributed in the left-right direction, each guide rail structure extending in the front-back direction. Specifically, the number of guide rail structures is two, but not limited to this, and the two guide rail structures are located on the left and right sides of the seat frame 41, respectively. The seat frame 41 is equipped with roller assemblies corresponding to each guide rail structure, which slide in engagement with the guide rail structure. A second drive mechanism is provided on the base frame 3, connected to the seat frame 41 to drive the seat frame 41 to reciprocate along the guide rail structure. The calf frame 21 is hinged to the front end of the seat frame 41. A third drive mechanism is provided on the seat frame 41, connected to the calf frame 21 to drive the calf frame 21 to flip relative to the seat frame 41 about a left-right axis. Specifically, one end of the third drive mechanism is hinged to the seat frame 41, and the other end can telescopically propel the calf frame 21.

[0033] As shown in Figure 1, a backrest pivot seat 18 is correspondingly provided at the top of the rear portion of the seat frame 41. The distal end of the protrusion is hingedly connected to the backrest pivot seat 18 so that the backrest can be rotated to a position horizontal to the seat frame 41 or at a negative angle (i.e., the angle between the backrest and the seat frame 41 is greater than 180°). Specifically, a backrest pivot seat 18 is provided at each of the left and right ends of the rear end of the seat frame 41. There are two protrusions, and the distal ends of the two protrusions are rotatably connected to the two backrest pivot seats 18 using backrest pins. A backrest fixed end ear seat 11 is provided at the bottom of the front end of the seat frame 41, and one end of the first drive mechanism is hingedly connected to the backrest fixed end ear seat 11. A backrest movable end ear seat 15 is provided at the bottom of the backrest frame 1, and the other end of the first drive mechanism is hingedly connected to the backrest movable end ear seat 15.

[0034] As shown in Figure 1, the backrest frame 1 comprises an upper frame 16 and a lower frame 14. The lower frame 14 includes a crossbar 141 and multiple connecting portions distributed along the crossbar 141. Each connecting portion has an upwardly extending first edge 142 that connects to the upper frame 16 to form the backrest portion. Each connecting portion has a forwardly extending second edge 143 that forms the protrusion. The backrest movable end lug 15 is mounted on the crossbar 141. The first edge 142 and the second edge 143 generally form an L-shape. There are two connecting portions, located at the left and right ends of the crossbar 141. A latch box 13 is screwed to each of the left and right ends of the bottom of the upper frame 16. The two latch boxes 13 are inserted into the first edges 142 of the two connecting portions, respectively. The front end of the seat frame 41 is provided with left and right calf lugs 22, to which the rear end of the calf frame 21 is hingedly connected. A calf tension spring 26 is also connected between the calf frame 21 and the seat frame 41. As shown in Figure 2, each guide rail structure includes a front guide rail 32 / 36 and a rear guide rail 31 / 37. The front guide rail 32 / 36 is provided with a rising section 39 that is higher in the front and lower in the rear. The rear guide rail 31 / 37 is located behind the rising section 39 and is lower than the front end of the rising section 39. The roller assembly includes a front roller 43 and a rear roller 47 that are sequentially distributed along the front-to-back direction. The front roller 43 slides in conjunction with the front guide rail 32 / 36, and the rear roller 47 slides in conjunction with the rear guide rail 31 / 37. The front guide rail 32 / 36 also includes a first extension section 310 that extends backward from the rear end of the rising section 39. The first extension section 310 is in a horizontal state. The rising section 39 is specifically in the shape of a concave arc, particularly a circular arc, but is not limited thereto.

[0035] The rear guide rail includes a descending section with a lower front and a higher rear and a second extending section extending upward from the rear end of the descending section, wherein the descending section is in an inclined state and the ascending section is in an arc shape.

[0036] As shown in Figure 2, the rear guide rail 31 / 37 comprises a descending section 311 that is lower in front and higher in the back, and a second extension section 312 extending rearward from the rear end of the descending section 311. The second extension section 312 is horizontal, while the descending section 311 is specifically, but not limited to, inclined. The descending section 311 is located above the first extension section 310. The chassis 3 specifically comprises left and right side frames 33, and a front crossbeam 34 and a rear crossbeam 38 connecting the two side frames 33. The two guide rail structures are respectively mounted on the two side frames 33.

[0037] In this embodiment, the first driving mechanism is the backrest push rod 12, and the second driving mechanism is the seat frame push rod 46, the movable portion of which is hinged to the seat frame 41. A seat frame fixing lug 35 is provided at the front of the base frame 3. Specifically, the seat frame fixing lug 35 is located in the middle of the front crossbeam 34, and the main body of the seat frame push rod 46 is hinged to the seat frame fixing lug 35. A seat frame lug 45 is provided at the rear of the seat frame 41, and the movable portion of the seat frame push rod 46 is hinged to the seat frame lug 45. The third driving mechanism is the calf push rod 23, the other end of which is hinged to the calf frame 21. Specifically, one end of the calf push rod 23 is hinged to the calf anti-pinch lug 24, which is connected to the calf fixing lug 25 provided on the seat frame 41 via a pin; the other end of the calf push rod 23 is hinged to the lug provided on the calf frame 21.

[0038] As shown in FIG3 , the mounting positions of the seat frame 41 corresponding to the front roller 43 and the rear roller 47 are respectively welded with seat frame sleeves 42 , and the seat frame sleeves 42 are connected to the rollers (i.e., the front roller 43 or the rear roller 47 ) via pins 55 .

[0039] In this embodiment, the tilting angle of the backrest frame 1 relative to the horizontal plane is 112° to 188.5°; the angle of the seat frame 41 relative to the horizontal plane can reach 4° to 36.5°.

[0040] The massage chair frame of the present invention has the following working principle.

[0041] When the seat frame push rod 46 is retracted, the front roller 43 and the rear roller 47 move forward in the front guide rails 32 / 36 and the rear guide rails 31 / 37 respectively, so that the seat frame 41 moves forward first and then is lifted, as shown in Figure 9, which shows that the front end of the seat frame 41 is lifted into place.

[0042] When the backrest push rod 12 is retracted, the backrest frame 1 performs a circular motion around the backrest rotating shaft seat 45, driving the backrest frame 1 to move, so that the backrest frame 1 lies down, as shown in Figures 7 and 8.

[0043] When the calf push rod 23 is pushed out, the calf frame 21 is pushed out and moves in a circle around the calf ear seat 22, so that the calf frame 21 is lifted, as shown in Figures 9 and 10. The calf frame 21 can rotate up to 101 ° relative to the horizontal plane.

[0044] The present invention can achieve the adjustment of various postures through the combination of angle changes between the backrest frame 1, the calf frame 21, and the seat frame 41 to adapt to diversified usage scenarios. Specifically, as shown in Figure 6, it is the chair frame lying state. Before forming the lying state, the seat frame 41 will first translate forward a distance so that the backrest frame 1 is always kept close to the wall, and then the calf frame 21, backrest frame 1, and seat frame 41 angles are combined to make the chair frame form a lying state, which greatly increases comfort. As shown in Figures 7 and 8, it is the chair frame stretched state. When the chair frame changes to the stretched state, the seat frame 41 will first translate forward a distance to ensure that it is close to the wall, and then the calf frame 21, backrest frame 1, and seat frame 41 angles are combined to make the seat frame 41 and the backrest frame 1 form a negative angle, so that the human body curve forms a reverse arch and achieves the effect of stretching. As shown in Figure 8, the chair frame is in its zero-gravity state. After the seat frame 41 slides forward into position, the backrest frame 1 is in a reclining position, and the calf frame 21 is horizontally raised, creating a simulated zero-gravity environment. As shown in Figure 10, the chair frame is in its V-shaped state. After the seat frame 41 slides forward into position, the angle between the backrest frame 1 and the seat frame 41 decreases to a minimum, and the calf frame 21 is fully extended, forming a V-shape for the entire chair frame, simulating the V-pose in yoga, thereby enhancing ligament toughness and eliminating leg fat.

[0045] The massage chair of the present invention comprises the massage chair frame as described above. For the structure and working principle of the massage chair frame, please refer to the above description, which will not be repeated here.

[0046] The massage chair frame and massage chair of the present invention, the unrelated parts are the same as those in the prior art or can be implemented by using the prior art.

[0047] The above embodiments are only used to further illustrate a massage chair frame and a massage chair of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.

Claims

1. A massage chair frame, comprising a base frame, a seat frame, a backrest frame, and a first driving mechanism, characterized in that: The seat frame is provided with a hinge point, the backrest frame includes a backrest portion and a protrusion arranged at the bottom of the backrest portion, the extension direction of the protrusion intersects with the extension direction of the backrest portion, and the end of the protrusion is hinged to the hinge point of the seat frame; one end of the first driving mechanism is hinged to the seat frame, and the other end can telescopically push the backrest frame to drive the backrest frame to flip relative to the seat frame, and the first driving mechanism is located below the hinge point and the backrest portion, so that the backrest frame can rotate around the hinge point to an angle lower than the horizontal plane where the hinge point is located; The base frame is provided with a guide rail structure, which extends in the front-rear direction; the seat frame is provided with a roller group corresponding to the guide rail structure, and the roller group is slidably matched with the guide rail structure; the base frame is provided with a second driving mechanism, which is connected to the seat frame to drive the seat frame to reciprocate on the guide rail structure.

2. The massage chair frame according to claim 1, characterized in that: A backrest pivot seat is correspondingly provided at the top of the rear portion of the seat frame, and the end of the protrusion is hinged to the backrest pivot seat so that the backrest portion can be rotated to a position horizontal or at a negative angle with the seat frame; a backrest fixed end ear seat is provided at the bottom of the front end of the seat frame, and one end of the first driving mechanism is hinged to the backrest fixed end ear seat; a backrest movable end ear seat is provided at the bottom of the backrest frame, and the other end of the first driving mechanism is hinged to the backrest movable end ear seat.

3. The massage chair frame according to claim 2, characterized in that: The backrest frame includes an upper frame body and a lower frame body, the lower frame body includes a cross bar and a plurality of connecting parts distributed on the cross bar along the left and right directions, each connecting part has a first side extending upward, the first side is connected to the upper frame body to form the backrest portion, each connecting part has a second side extending forward, the second side forms the protrusion; the ear seat of the movable end of the backrest is arranged on the cross bar.

4. The massage chair frame according to claim 3, characterized in that: The bottom of the upper frame body is connected to a latch box corresponding to the first side of each connecting part, and each latch box is inserted into the first side of the corresponding connecting part.

5. The massage chair frame according to claim 1, characterized in that: The guide rail structure includes a front guide rail and a rear guide rail, the front guide rail includes an ascending section which is higher in the front and lower in the rear, and the rear guide rail is located behind the ascending section and is lower than the front end of the ascending section; the roller group includes a front roller and a rear roller distributed in sequence along the front and rear directions, the front roller is slidably fitted with the front guide rail, and the rear roller is slidably fitted with the rear guide rail.

6. The massage chair frame according to claim 3, characterized in that: The front guide rail also includes a first extension section extending backward from the rear end of the ascending section, and the rear guide rail includes a descending section which is lower at the front and higher at the rear and a second extension section extending upward from the rear end of the descending section, wherein the descending section is located above the first extension section; the descending section is in an inclined state, and the ascending section is in an arc shape.

7. The massage chair frame according to claim 1, characterized in that: There are multiple guide rail structures, and the multiple guide rail structures are distributed along the left-right direction.

8. The massage chair frame according to claim 1, characterized in that: The tilting angle of the backrest frame relative to the horizontal plane is 112° to 188.5°; the angle of the seat frame relative to the horizontal plane can reach 4° to 36.5°.

9. The massage chair frame according to any one of claims 1 to 8, characterized in that: It also includes a calf frame and a third driving mechanism, the calf frame is hinged to the front end of the seat frame, one end of the third driving mechanism is hinged to the seat frame, and the other end can telescopically push the calf frame to drive the calf frame to flip relative to the seat frame; the first driving mechanism is a backrest push rod, the second driving mechanism is a seat frame push rod, and the movable part of the seat frame push rod is hinged to the seat frame; the third driving mechanism is a calf push rod.

10. A massage chair, characterized in that: It comprises a massage chair frame as described in any one of claims 1-9.

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