TWI908655B - Rhythmic stretching chair - Google Patents

Abstract

The rhythmic stretching chair of this invention includes: a base with a slide rail on each side, a swing seat with a sliding block that engages with the slide rail, allowing the swing seat to move relative to the base. A drive motor is mounted on the base and connected to a reduction gear set. The reduction gear set has an output shaft connected to an eccentric wheel. The eccentric wheel is linked to a connecting rod, which is hinged to the swing seat, thus propelling the swing seat to move. The stretching chair structure is mounted on the swing seat.

Description

Rhythmic stretching chair

This invention relates to devices for relieving body stress and stretching, particularly a rhythmic stretching chair.

There are many types of chairs or recliners on the market that can help users stretch their bodies, such as those disclosed in domestic patents M659817, M576453, and M259523. To maintain structural stability when stretched, these products require a stable base that can be placed on a flat surface. This base must be stable and immovable to ensure the stability of the mechanisms within it during operation. However, this also limits the scenarios in which these products can be used and their other potential applications.

The primary objective of this invention is to provide a rhythmic stretching chair that allows for both rhythmic operation and stress relief.

To achieve the aforementioned main objectives, the rhythmic stretching chair of this invention comprises: a base, with a long side bar on each of its two opposite sides, a slide rail on the outer side of each of the two long side bars, and two legs below each long side bar. A first drive motor is mounted on the base. A reduction gear set is mounted on the base and connected to the first drive motor, and can be driven by the first drive motor. The reduction gear set has an output shaft, and an eccentric wheel is mounted on the output shaft, the eccentric wheel being connected to a connecting rod. A swing base includes: two side rods disposed on the opposite outer sides of the two long side rods of the base; each side rod has at least one slide block disposed on its opposite inner side, the slide block being sleeved on the corresponding side slide rail, allowing the two side rods to move relative to the long side rods along the long axis of the slide rail; the swing base has a hinge portion, one end of the connecting rod being hinged to the hinge portion; a seat support mounted on the two side rods; the seat support includes a plurality of longitudinal support columns and a seat frame; a back support frame and a foot support frame, respectively mounted on the seat support, and swingable relative to the seat support. A second drive motor is disposed on the swing base and connected to a first telescopic rod, which can push the backplate support frame to swing. A third drive motor is disposed on the swing base and connected to a second telescopic rod, the hinge of which can push the foot support frame to swing.

With the above-described structure, the swing seat of this invention's rhythmic stretching chair is connected to the base via the cooperation of the two sliding rails and the sliding seat. Furthermore, the four legs of the base allow the entire swing seat to be suspended in the air, without contacting the ground. In this way, the seat cushion support, backrest support, foot support, second drive motor, and third drive motor, all mounted on the swing seat, can swing with the swing seat while maintaining their original swinging and stretching function.

10: Base

11: Long side poles

12: Support rods

13: Sliding rail

14: Footpost

20: First Drive Motor

30: Gearbox

31:Output shaft

32: Eccentric Wheel

40: Linkage

50: Pendulum Seat

51: Side rail

52: Slide

53: Support rod

54: Connecting Part

60: Seat Cushion Support

61: Longitudinal support

62: Seat cushion frame

70: Backplate support frame

80: Foot support frame

90: Second drive motor

91: First telescopic rod

92: Upper arm swing

93: Downward swing arm

100: Third Drive Motor

101: Second telescopic bar

102: Forward swing arm

103: Backswing

Figure 1 is a schematic diagram of the three-dimensional assembly of the present invention.

Figure 2 is a partial exploded view of the present invention.

Figure 3 is a three-dimensional schematic diagram of the base in this invention.

Figure 4 is a top view of the base in this invention.

Figure 5 is a side view of the invention.

Figure 6 is a sectional view along section line 6-6 in Figure 5.

Figure 7 is a sectional view along section line 7-7 in Figure 5.

Figure 8 is similar to Figure 7, showing the operating state of the eccentric wheel and connecting rod.

Figure 9 is a side view of this creation, showing the backplate support frame in operation.

Figure 10 shows another side view of this creation, illustrating the foot support's operational state.

The applicant hereby clarifies that, in this specification, including the embodiments described below and the claims within the scope of this patent application, all directional terms are based on the directions shown in the drawings. Secondly, in the embodiments and drawings to be described below, identical component designations represent identical or similar components or their structural features. The directions referred to in this specification are for illustrative purposes only and are not intended to be limiting.

Please refer to Figures 1 to 10 for the structure of the rhythmic stretching chair of this invention. The rhythmic stretching chair of this invention includes:

A base 10 includes two long side bars 11 disposed on opposite sides of the base 10. A plurality of support rods 12 are disposed between the two long side bars 11. In this embodiment, two support rods 12 are provided, so that the two long side bars and the two support rods form the base 10, and the two long side bars are arranged parallel to each other. A slide rail 13 is provided on the opposite outer edge of each of the two long side bars, and two columns 14 are provided below each long side bar. The number of support rods 12 between the two long side bars 11 is not limited to two; one or three can also be provided, depending on the overall size and strength requirements of the base 10.

A first drive motor 20 is mounted on one of the supports 12 of the base.

A reduction gear set 30 is mounted on another support rod 12 of the base. In this embodiment, the reduction gear set 30 consists of several rollers of different sizes connected by a belt to achieve speed reduction. However, it is not limited to this and can also be a planetary reduction gear or a harmonic reduction gear, or other speed reduction devices with the same effect. The reduction gear set 30 is connected to the first drive motor 20 and can be driven by the first drive motor 20. The reduction gear set has an output shaft 31, on which an eccentric wheel 32 is mounted.

A connecting rod 40, one end of which is hinged to the eccentric wheel 32.

A swing base 50 includes: two side rods 51, which are disposed on the opposite outer sides of the two long side rods 11 of the base. Each side rod 51 has at least one slide block 52 on its opposite inner side. The slide block 52 is sleeved on the corresponding slide rail 13, so that the two side rods 51 can move relative to the long side rods 11 along the long axis of the slide rail 13. A plurality of support rods 53 are provided between the two side rods 51, connecting the two side rods. The support rods 53 pass between the two long side rods 11 from below the base. One of the support rods 53 is provided with at least one hinge portion 54, and one end of the connecting rod 40 is hinged to the hinge portion 54. In this embodiment, each side rod 51 is provided with three slides 52, but it is not limited to this and can also be provided as a long slide or other forms. To ensure more stable operation, each end of the output shaft of the reduction gear set is equipped with an eccentric wheel, each eccentric wheel is connected to a connecting rod, and each connecting rod is hinged to a joint located on a support rod.

A seat support 60 is mounted on the two side bars 51. The seat support 60 includes four longitudinal support columns 61 and a seat frame 62 for placing the seat. The four longitudinal support columns 61 are arranged in groups of two on each of the two side bars 51. The seat frame 62 is mounted on and supported by the four longitudinal support columns.

A backrest support frame 70 is pivotally mounted on the seat support frame 60 and can swing relative to the seat support frame 60.

A foot support frame 80 is pivotally mounted on the seat support frame 60 and can swing relative to the seat support frame 60.

A second drive motor 90 is mounted on a support rod 53 of the swing seat 50. The second drive motor 90 is connected to a first telescopic rod 91, which is hinged to two swing arms, namely an upper swing arm 92 and a lower swing arm 93. One end of the lower swing arm 93 is hinged to the first telescopic rod 91, and the other end is hinged to the support rod 53. One end of the upper swing arm 92 is hinged to the first telescopic rod 91, and the other end is hinged to the backplate support frame 70. The second drive motor 90 can drive the first telescopic rod 91 to extend and retract. The actuation of the first telescopic rod 91 can drive the upper swing arm 92 and the lower swing arm 93, causing the backrest support frame 70 to swing relative to the seat frame 62, allowing the backrest support frame 70 to tilt from an upright sitting position to a reclining position.

A third drive motor 100 is mounted on a support rod 53 of the swing seat 50. The third drive motor 100 is connected to a second telescopic rod 101. The second telescopic rod 101 is hinged to a front swing arm 102 and a rear swing arm 103. One end of the rear swing arm 103 is hinged to the second telescopic rod 101, and the other end is hinged to the seat support 60. One end of the front swing arm 102 is hinged to the second telescopic rod 101, and the other end is hinged to the foot support frame 80. The third drive motor 100 can drive the second telescopic rod 101 to extend and retract. The actuation of the second telescopic rod 101 can cause the front swing arm 102 and the rear swing arm 103 to move, causing the foot support frame 80 to swing relative to the seat frame 62, thus raising or lowering the foot support frame 80 to change its tilt angle.

For ease of explanation, this invention has removed some of the longitudinal supports of the seat support in Figures 9 and 10, making the figures clearer and preventing them from being obscured by the longitudinal supports.

With the structure of this invention described above, in use, the rotational power of the first drive motor 20 is transmitted through the reduction gear set 30 to the eccentric wheel 32 on the output shaft 31. The eccentric wheel 32 then drives the connecting rod 40, which is linked to the hinge portion 54 of the oscillating seat 50. Therefore, the connecting rod 40 pushes the oscillating seat 50 to produce reciprocating movement.

In this invention, the swing seat 50 is connected to the base 10 via the cooperation of the two slide rails 13 and the slide block 52, and the four legs 14 of the base allow the swing seat 50 to be suspended in the air, not in contact with the ground. In this way, the seat support 60, back support 70, foot support 80, second drive motor 90, and third drive motor 100, all mounted on the swing seat 50, can swing with the swing seat 50, thus achieving a rhythmic and relaxed motion.

11: Long side poles

14: Footpost

40: Linkage

51: Side rail

52: Slide

54: Connecting Part

60: Seat Cushion Support

61: Longitudinal support

62: Seat cushion frame

70: Backplate support frame

80: Foot support frame

90: Second drive motor

92: Upper arm swing

Claims (9)

A rhythmic stretching chair includes: a base with two long side bars, each side bar having a slide rail on its opposite outer side, and two legs below each side bar; a first drive motor mounted on the base; a reduction gear set mounted on the base and connected to the first drive motor, which can be driven by the first drive motor, the reduction gear set having an output shaft with an eccentric wheel mounted on the output shaft; and a connecting rod, one end of which is hinged to the eccentric wheel. A center chakra; a pendulum base comprising: two side rods disposed on the opposite outer sides of the two long side rods of the base, each side rod having at least one slide block disposed on its opposite inner side, the slide block being fitted onto the corresponding slide rail, allowing the two side rods to move relative to the long side rods along the long axis of the slide rail; the pendulum base having a hinge portion, one end of the connecting rod being hinged to the hinge portion; and a seat support on the two side rods, the seat support comprising a plurality of longitudinal support columns for... The device includes a seat frame; a backrest support frame, pivoted on the seat frame and capable of swinging relative to the seat frame; a footrest support frame, pivoted on the seat frame and capable of swinging relative to the seat frame; a second drive motor, mounted on the swing base, connected to a first telescopic rod, the first telescopic rod pivotally connected to an upper swing arm and a lower swing arm, one end of the lower swing arm pivotally connected to the first telescopic rod, and the other end pivotally connected to the swing base. One end of the upper swing arm is hinged to the first telescopic rod, and the other end is hinged to the back support frame; a third drive motor is provided on the swing seat, and the third drive motor is linked to a second telescopic rod, which is hinged to a front swing arm and a rear swing arm. One end of the rear swing arm is hinged to the second telescopic rod, and the other end is hinged to the seat support. One end of the front swing arm is hinged to the second telescopic rod, and the other end is hinged to the foot support frame. The rhythmic stretching chair as described in claim 1, wherein a plurality of support bars are provided between the two long side bars, and the first drive motor is provided on one of the support bars of the base. The rhythmic stretching chair as described in claim 2, wherein the deceleration wheel assembly is located on one of the supports of the base. The rhythmic stretching chair as described in claim 3, wherein a plurality of support rods are provided between the two side bars to connect the two side bars, and the support rods pass between the two long side bars from below the base. The rhythmic stretching chair as described in claim 4, wherein the second drive motor is located on one of the supports of the swing seat. The rhythmic stretching chair as described in claim 5, wherein the third drive motor is located on one of the supports of the swing seat. The rhythmic stretching chair as described in claim 1, wherein a plurality of support rods are provided between the two side bars to connect the two side bars, and the support rods pass between the two long side bars from below the base. The rhythmic stretching chair as described in claim 7, wherein the second drive motor is located on one of the supports of the swing seat. The rhythmic stretching chair as described in claim 8, wherein the third drive motor is located on one of the supports of the swing seat.