Rhythmic stretching chair

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 connected to a reduction gear set on the base; the reduction gear set has an output shaft connected to an eccentric wheel; the eccentric wheel drives a connecting rod, which is pivotally connected to the swing seat, allowing the swing seat to move; and 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, or M259523. In order to maintain the stability of their structure when stretched, these products must have a very stable base that can be placed on a flat surface. Moreover, the base must be stable and not move to ensure the stability of the various mechanisms on the base when they are in operation. However, this also limits the usage scenarios and other possibilities of this type of product. The main objective of this invention is to provide a rhythmic stretching chair that can be operated rhythmically and can also relieve stress and stretch. To achieve the aforementioned main objectives, the rhythmic stretching chair of the present invention comprises: a base, with a long side rod on each of its opposite sides, a slide rail on the opposite outer side of each of the two long side rods, and two foot posts below each long side rod. A first drive motor is mounted on the base. A reduction gear assembly is mounted on the base and connected to the first drive motor, and can be driven by the first drive motor. The reduction gear assembly 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 seat comprises: two side rods located on the opposite outer sides of the two long side rods of the base, with at least one slide on the opposite inner side of each side rod. The slide is fitted onto the slide rail on the corresponding side, allowing the two side rods to move relative to the long side rods along the longitudinal axis of the slide rail. The swing seat has a pivot portion, and one end of the connecting rod is pivotally connected to the pivot portion. A seat cushion support is mounted on the two side rods, and the seat cushion support comprises a plurality of longitudinal support columns and a seat cushion frame. A backrest support frame and a footrest support frame are pivotally mounted on the seat cushion support and can swing relative to the seat cushion support. A second drive motor is located on the swing base and is connected to a first telescopic rod, which can push the backrest support frame to swing. A third drive motor is located on the swing base and is linked to a second telescopic rod, which can pivotally push the footrest support frame to swing. With the above structure, the swing seat of the rhythmic stretching chair of the present invention is connected to the base through the cooperation of the two slide rails and the slide seat, and the four legs of the base allow the entire swing seat to be suspended in the air and not in contact with the ground. In this way, the seat cushion support, back support frame, foot support frame, second drive motor and third drive motor and other structures set on the swing seat can swing with the swing seat and still maintain their original swinging and stretching functions. 10: Base 11: Long side bar 12: Support rod 13: Slide rail 14: Footpost 20: First drive motor 30: Reduction Gear Set 31: Output shaft 32: Eccentric wheel 40: Linkage 50: Swinging seat 51: Side pole 52: Slide 53: Support rod 54: Pivot 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 pole 92: Upper swing arm 93: Lower swing arm 100: Third drive motor 101: Second telescopic pole 102: Front swing arm 103: Rear Swing Arm Figure 1 is a three-dimensional assembly diagram of the present invention. Figure 2 is a partial three-dimensional 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 present invention. Figure 6 is a cross-sectional view along section line 6-6 in Figure 5. Figure 7 is a cross-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 state of the back panel support frame in motion. Figure 10 is another side view of this creation, showing the movement state of the foot support frame. The applicant hereby clarifies that, in this specification, including the embodiments described below and the claims in the claims, all directional terms are based on the directions shown in the drawings. Secondly, in the embodiments and drawings to be described below, the same element reference numerals represent the same or similar elements or their structural features, and the directions referred to in the 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 the present invention. The Rhythmic Stretching Chair of the present invention includes: A base 10 includes two long side rods 11 disposed on opposite sides of the base 10. A plurality of support rods 12 are provided between the two long side rods 11. In this embodiment, two support rods 12 are provided, allowing the two long side rods to combine to form the base 10, with the two long side rods arranged relatively parallel to each other. A slide rail 13 is provided on the outer edge of each of the two long side rods, and two foot posts 14 are provided below each long side rod. The number of support rods 12 between the two long side rods 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 provided. A connecting rod 40, one end of which is pivotally connected to the eccentric wheel 32. A swing base 50 includes two side rods 51 located on opposite outer sides of two long side rods 11 of the base. Each side rod 51 has at least one slide block 52 on its opposite inner side, which is fitted onto a slide rail 13 on the corresponding side, allowing the two side rods 51 to move relative to the long side rods 11 along the longitudinal axis of the slide rail 13. A plurality of support rods 53 connect the two side rods 51, passing below the two long side rods 11 and between them. One support rod 53 has at least one pivot portion 54, and one end of a connecting rod 40 is pivotally connected to this pivot portion 54. In this embodiment, each side rod 51 has three slide blocks 52, but this is not a limitation; it can also be configured as a single elongated slide block or other forms. To make the operation more stable, each end of the output shaft of the reduction gear set is provided with an eccentric wheel, each eccentric wheel is connected to a connecting rod, and each connecting rod is pivotally connected to a pivot part, which is located on a support rod. A seat cushion support 60 is mounted on the two side rods 51. The seat cushion support 60 includes four longitudinal support columns 61 and a seat cushion frame 62 for placing the seat cushion. The four longitudinal support columns 61 are arranged in groups of two on the two side rods 51. The seat cushion frame 62 is mounted on the four longitudinal support columns 61 and supported by them. A back support frame 70 is pivotally mounted on the seat cushion support 60 and can swing relative to the seat cushion support 60. A foot support frame 80 is pivotally mounted on the seat cushion support 60 and can swing relative to the seat cushion support 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 pivotally connected 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 pivotally connected to the first telescopic rod 91, and the other end is pivotally connected to the support rod 53. One end of the upper swing arm 92 is pivotally connected to the first telescopic rod 91, and the other end is pivotally connected to the backrest support frame 70. The second drive motor 90 can drive the first telescopic rod 91 to extend and retract, and 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 cushion 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, which is pivotally connected to a front swing arm 102 and a rear swing arm 103. One end of the rear swing arm 103 is pivotally connected to the second telescopic rod 101, and the other end is pivotally connected to the seat cushion support 60. One end of the front swing arm 102 is pivotally connected to the second telescopic rod 101, and the other end is pivotally connected to the foot support frame 80. The third drive motor 100 can drive the second telescopic rod 101 to extend and retract, and the actuation of the second telescopic rod 101 can drive 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 cushion frame 62, so that the foot support frame 80 can be raised or lowered to change its tilt angle. For ease of explanation, the present invention removes some of the longitudinal struts of the seat cushion support in Figures 9 and 10, so that the figures can be clearer and are not obscured by the longitudinal struts. With the structure of the present invention described above, when in use, the rotational power of the first drive motor 20 is transmitted to the eccentric wheel 32 on the output shaft 31 through the reduction gear set 30. The eccentric wheel 32 will drive the connecting rod 40. The connecting rod 40 is pivotally connected to the pivot part 54 of the swing seat 50. Therefore, the connecting rod 40 will drive the swing 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, without contacting the ground. In this way, the seat cushion support 60, back support frame 70, foot support frame 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 expansive effect. 11: Long side bar 14: Footpost 40: Linkage 51: Side pole 52: Slide 54: Pivot 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 swing arm

Claims

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

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