Self-adaptive fitting shank rotating mechanism

Abstract

The utility model discloses a self-adaptive fitting shank rotating mechanism which comprises a connecting piece used for being connected with a seat support and a supporting piece used for fitting a shank, and the supporting piece is connected with the connecting piece and rotatably connected to the seat support through the connecting piece. The supporting piece comprises a mounting frame, two rotating assemblies arranged on the two sides of the mounting frame respectively and a massage assembly mounted on the mounting frame. And the rotating assembly is rotatably connected with the connecting piece, so that the mounting frame is rotatably matched with the connecting piece. According to the scheme, the angle and the fitting degree can be automatically adjusted according to the shank shape of a user, and massage comfort is improved.

Description

Technical Field

[0001] This utility model relates to a massage chair, specifically an adaptive and conforming leg rotation mechanism. Background Technology

[0002] Currently, most commercially available massage chairs with leg massage functions use a fixed or semi-adjustable design. Related technologies can be found at:

[0003] Fixed designs are becoming less common. In this type of design, the lower leg cannot be adjusted in angle, and the user has to position the lower leg in a suitable position to massage it with the massage components.

[0004] Currently, semi-adjustable designs are more commonly used. A reference can be made to the technical solution disclosed in the patent publication CN119453681A, which describes a variable-angle massage chair frame and massage chair. While the calf mechanism in this design can adjust the angle to some extent, this adjustment cannot adaptively fit the calves of different users, resulting in a certain angle that can cause discomfort when the user's calves come into contact with the mechanism, and also compromises the massage experience. Therefore, a better adaptive calf mechanism is needed to improve the user's contact and massage experience. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an adaptive calf rotation mechanism that can automatically adjust the angle and fit according to the shape of the user's calf, thereby improving massage comfort.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An adaptive calf rotation mechanism includes a connector for connecting a seat frame and a support for conforming to the calf. The support is connected to the connector and rotatably connected to the seat frame via the connector. The support includes a mounting frame, two rotating components respectively disposed on both sides of the mounting frame, and a massage component mounted on the mounting frame. The rotating components are rotatably connected to the connector to allow for a rotatable fit between the mounting frame and the connector.

[0008] As a further improvement of this utility model, the rotating assembly includes a rotating component that is rotatably connected to a connecting component, a slide rail that is slidably connected to the rotating component, and an elastic component provided between the rotating component and the slide rail or between the rotating component and the mounting bracket. The mounting bracket is fixedly connected to the slide rail. The elastic component provides a tendency for the mounting bracket to move toward the rotating component, and the mounting bracket moves closer to or away from the rotating component through the slide rail and the rotating component slidingly together.

[0009] As a further improvement of this utility model, the slide rail or rotating component is provided with a limiting part for limiting the maximum stroke of the mounting bracket away from the rotating component, so as to limit the slide rail from disengaging from the rotating component; the slide rail is provided with a sliding engagement part for the rotating component to move, and there are two limiting parts, which are located at both ends of the sliding engagement part, respectively, to limit the movement stroke of the mounting bracket.

[0010] As a further improvement of this utility model, there are two slide rails, which are located on both sides of the rotating member respectively; each of the two slide rails is provided with a sliding engagement part, and the two ends of the rotating member abut against the corresponding sliding engagement parts and are slidably connected.

[0011] As a further improvement of this utility model, the rotating member is provided with sliding grooves on both sides, and the sliding mating part is located in the sliding groove and slides in cooperation with the sliding groove.

[0012] As a further improvement of this utility model, the slide rail is provided with a through hole, and the rotating component is slidably connected to the through hole along the length of the through hole, and the maximum sliding stroke is limited by the two end walls of the through hole in the length direction.

[0013] As a further improvement of this utility model, a protrusion is provided on the rotating part at the position corresponding to the through hole, and the protrusion passes through the through hole and slides in fit with the through hole; or the rotating part is slidably connected to the through hole by bolts, and the bolts form a sliding fit with the through hole.

[0014] As a further improvement of this utility model, the elastic component is a spring, and there are two springs. One end of the spring is connected to the slide rail or mounting bracket, and the other end is installed on the rotating component. The two elastic components are respectively located on both sides of the position where the rotating component and the connecting component are rotatably connected.

[0015] As a further improvement of this utility model, the two springs form an included angle on the extension lines of one end of the corresponding rotating part.

[0016] As a further improvement of this utility model, a limit stop is provided on the connecting member at the position corresponding to the rotating member, and an abutment member is provided on the rotating member with two limit stops cooperating with the limit stops. The two abutment members cooperate with the limit stops to limit the rotation range of the rotating member.

[0017] The beneficial effects of this invention are that the mounting bracket, through the rotatable connection of the rotating component, adaptively adjusts its angle around the axis of the connecting member, allowing the massage component to conform to the curve of the calf. The rotating component, in conjunction with the rotational relationship between the connecting member and the seat bracket, enables multiple rotational adjustments. This dynamic feature allows the mounting bracket to dynamically adjust according to the shape of the calf, resulting in even pressure application from the massage component, avoiding excessive localized pressure, and improving fit and comfort. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention and the seat bracket in an assembled state;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model (the slide rail has through holes);

[0020] Figure 3 This is a schematic diagram of the rotating structure of this utility model (with through holes on the slide rail);

[0021] Figure 4 This is a schematic diagram of the cooperation structure between the limiting stop and the abutment of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of this utility model (with a sliding groove on the rotating part);

[0023] Figure 6 This is a schematic diagram of the sliding fit part of this utility model (with a sliding groove on the rotating part);

[0024] Figure 7 This is a schematic diagram of the rotating component structure of this utility model (the rotating component has a sliding groove).

[0025] Reference numerals: 1. Seat bracket; 2. Connector; 21. Limiting stop; 3. Mounting bracket; 4. Rotating assembly; 41. Rotating component; 411. Slide groove; 412. Protrusion; 413. Abutment; 42. Slide rail; 421. Limiting part; 422. Sliding mating part; 423. Through hole; 43. Elastic component; 5. Massage assembly. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0027] Reference Figure 1-7 As shown,

[0028] An adaptive calf rotation mechanism includes a connector 2 for connecting a seat bracket 1 and a support for conforming to the calf. The support is connected to the connector 2 and is rotatably connected to the seat bracket 1 via the connector 2. The support includes a mounting frame 3, two rotating components 4 respectively disposed on both sides of the mounting frame 3, and a massage component 5 mounted on the mounting frame 3. The rotating components 4 are rotatably connected to the connector 2 so that a rotatable fit is formed between the mounting frame 3 and the connector 2.

[0029] In this design, the overall position of the mounting bracket 3 is adjusted through the rotational engagement between the connector 2 and the seat bracket 1. The mounting bracket 3 itself is further rotated via the rotating component 4, allowing for multiple rotational engagements in the lower leg area. This dynamic feature allows the mounting bracket 3 to dynamically adjust according to the shape of the lower leg, resulting in a better fit. This essentially allows for more flexible adjustment of the mounting bracket 3's position, thus better conforming to the curve of the lower leg. At this time, the massage component 5 applies more even pressure, avoiding excessive localized pressure and improving fit and comfort.

[0030] During use, the user's lower leg is positioned on the support, i.e., on the mounting frame 3. A shell can be fitted onto the mounting frame 3 to enhance the comfort of the user's lower leg support. During the massage, the connecting piece 2 can rotate to adjust the overall position of the mounting frame 3. Since the mounting frame 3 itself is in a rotating engagement with the connecting piece 2 via the rotating component 4, this further increases the rotational dimension, allowing the position of the mounting frame 3 corresponding to the lower leg to fit more closely to the lower leg.

[0031] To further improve the fit to the lower leg, in one optional embodiment, the rotating assembly 4 includes a rotating member 41 rotatably connected to the connecting member 2, a slide rail 42 slidably connected to the rotating member 41, and an elastic member 43 provided between the rotating member 41 and the slide rail 42 or between the rotating member 41 and the mounting bracket 3. The mounting bracket 3 is fixedly connected to the slide rail 42. The elastic member 43 provides a tendency for the mounting bracket 3 to move toward the rotating member 41, and the mounting bracket 3 moves closer to or away from the rotating member 41 through the slide rail 42 and the rotating member 41 in a sliding fit.

[0032] The elastic component 43 (such as a spring, torsion spring, or elastic band) maintains the position of the slide rail 42 and the mounting bracket 3 through preload. When pressure is applied to the calf, the slide rail 42 slides along the rotating component 41, and the elastic component 43 compresses and generates a counter-elastic force, forming a dynamic balance. This design allows the mounting bracket 3 to automatically adjust its height and angle as the calf posture changes, ensuring that the massage component 5 always fits snugly against the calf surface, while the elastic cushioning reduces mechanical impact. Moreover, the elastic component 43 further enhances the adaptive effect, allowing the mounting bracket 3 to maintain an adaptive fit at all times as the calf posture changes. In this design, the massage component 5 is mounted on the mounting bracket 3, and the mounting bracket 3 can cooperate with the slide rail 42 and the rotating component 41 to create a rotational engagement. For example, when the massage intensity of the massage component 5 is too high, the reaction force during massage can cause a certain amount of sliding between the slide rail 42 and the rotating component 41, and with the elastic component 43 acting as a buffer, it can alleviate some of the excessive massage intensity and improve massage comfort.

[0033] Reference Figure 5 , 6As shown in Figure 7 (where the spring and the rotating member 41 are not connected, the spring can be stretched upward to hook with the rotating member 41 to complete the connection), in an embodiment that further improves the fit stability between the slide rail 42 and the rotating member 41, the slide rail 42 or the rotating member 41 is provided with a limiting part 421 for limiting the maximum stroke of the mounting bracket 3 away from the rotating member 41, so as to limit the slide rail 42 from disengaging from the rotating member 41; the slide rail 42 is provided with a sliding engagement part 422 for the rotating member 41 to move, and there are two limiting parts 421, which are located at both ends of the sliding engagement part 422, respectively, to limit the stroke of the mounting bracket 3.

[0034] The limiting part 421 prevents the slide rail 42 from disengaging from the rotating part 41 by blocking the sliding limit of the slide rail 42, ensuring safe operation of the mechanism within a preset stroke. For example, when the user's calf applies excessive pressure, the slide rail 42 stops at the limiting part 421, avoiding structural damage. This design, combined with the buffering capacity of the elastic component 43, ensures both the adjustment range and improves the reliability of the mechanism.

[0035] In an optional further configuration, there are two slide rails 42, which are located on both sides of the rotating member 41 respectively; each slide rail 42 is provided with a sliding engagement part 422, and the two ends of the rotating member 41 abut against the corresponding sliding engagement part 422 and are slidably connected.

[0036] The double slide rail 42 design makes the sliding state more stable when the slide rail 42 and the rotating part 41 are in sliding engagement; the contact between the end of the rotating part 41 and the sliding engagement part 422 further improves stability and ensures that the slide rail 42 moves in a straight line. This structure enhances the stability of the mechanism and avoids jamming problems caused by uneven force on one side.

[0037] To ensure a more stable fit between the rotating component 41 and the slide rail 42, one option involves providing grooves 411 on both sides of the rotating component 41. A sliding engagement portion 422 is located within the grooves 411 and slides within them. The grooves 411 provide a guide track for the sliding engagement portion 422, ensuring that the slide rail 42 moves along a fixed path and that the fit between the two is more stable, preventing any disengagement.

[0038] In another embodiment, unlike the method where the rotating member 41 abuts against the slide rail 42 at both ends, refer to... Figure 2 , 3As shown, the slide rail 42 has a through hole 423. The rotating component 41 is slidably connected to the through hole 423 along its length, and the maximum sliding stroke is limited by the end walls of the through hole 423 along its length. The length of the through hole 423 determines the maximum sliding stroke, and the end walls of the hole limit the range of movement of the rotating component 41 when it slides within the through hole 423. This structure simplifies the limiting design, and the fit between the through hole 423 and the rotating component 41 reduces the machining difficulty and makes assembly more convenient, making it suitable for mass production.

[0039] Specifically, a protrusion 412 is provided on the rotating component 41 at the position corresponding to the through hole 423, and the protrusion 412 passes through the through hole 423 and slides in cooperation with the through hole 423; or

[0040] The rotating part 41 is slidably connected to the through hole 423 by bolts, and a sliding fit is formed between the bolts and the through hole 423.

[0041] The clearance fit between the protrusion 412 and the through hole 423 allows the rotating part 41 to slide freely, while the bolt connection allows for adjustment of sliding resistance to meet different user needs. Both solutions achieve reliable connection and facilitate maintenance and replacement. After the protrusion 412 passes through the through hole 423, it can also be installed by connecting the bolt to the end of the protrusion 412 via a threaded connection. In this case, the bolt's main function is to prevent the protrusion 412 from separating from the slide rail 42, rather than for a sliding connection.

[0042] The aforementioned elastic component 43 can be a spring, specifically as follows: the elastic component 43 is a spring, and there are two of them. One end of the spring is connected to the slide rail 42 or the mounting bracket 3, and the other end is installed on the rotating component 41. The two elastic components 43 are located on both sides of the position where the rotating component 41 and the connecting component 2 are rotatably connected.

[0043] The arrangement of two springs can provide balanced elastic force as much as possible, avoiding overload of one side of the spring. When the slide rail 42 is compressed, the springs on both sides pull the rope synchronously, stabilizing the translation of the mounting bracket 3 and preventing massage deviation and poor fit caused by tilting. The aforementioned springs are preferably symmetrically distributed on both sides along the path of the sliding direction of the rotating part 41, at the position where the rotating part 41 and the connecting part 2 are rotatably connected, which can maximize the uniformity of the elastic force provided by the two springs.

[0044] Preferably, the two springs form an angle along the extension lines of one end of the rotating component 41. This angle design allows the rotating component 41 to generate lateral tension through the springs, thereby improving the stability of the rotating component 41 and its driving effect on the mounting bracket 3 when it rotates. In particular, since the rotating component 41 and the slide rail 42 are connected through the through hole 423, the lateral support effect will be weakened. The angle design of the springs can provide lateral cooperation. Moreover, with this scheme, the way the rotating component 41 drives the mounting bracket 3 to rotate is through the linkage and buffering of the springs, which can provide better adaptive fit and a more uniform transition of the support force.

[0045] In order to maintain the fit to the calf and make the massage effect more stable, a limit stop 21 is provided on the connector 2 at the position corresponding to the rotating part 41. The rotating part 41 is provided with two abutment parts 413 that cooperate with the limit stop 21. The two abutment parts 413 cooperate with the limit stop 21 to limit the rotation range of the rotating part 41.

[0046] The limiting effect of this rotation range can prevent the mounting bracket 3 from rotating excessively, which would weaken the fit and prevent the massage component 5 from providing a stable massage effect on the calf.

[0047] It should be noted that the above description refers to a single rotating component 4. In fact, there are two rotating components 4, located on both sides of the mounting bracket 3, and both are connected by connectors 2.

[0048] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An adaptive calf-hugging rotating mechanism, comprising a connector for connecting to a seat frame and a support for conforming to the calf, wherein the support is connected to the connector and rotatably connected to the seat frame via the connector, characterized in that, The support includes a mounting frame, two rotating components respectively disposed on both sides of the mounting frame, and a massage component mounted on the mounting frame; the rotating components are rotatably connected to the connector so that the mounting frame and the connector can form a rotatable fit.

2. The adaptive calf rotation mechanism according to claim 1, characterized in that, The rotating assembly includes a rotating component that is rotatably connected to a connecting component, a slide rail that is slidably connected to the rotating component, and an elastic component provided between the rotating component and the slide rail or between the rotating component and the mounting bracket. The mounting bracket is fixedly connected to the slide rail. The elastic component provides a tendency for the mounting bracket to move toward the rotating component, and the mounting bracket moves closer to or away from the rotating component through the slide rail and the rotating component slidingly together.

3. The adaptive calf rotation mechanism according to claim 2, characterized in that, The slide rail or rotating component is provided with a limiting part for limiting the maximum stroke of the mounting bracket away from the rotating component, so as to prevent the slide rail from disengaging from the rotating component; the slide rail is provided with a sliding engagement part for the rotating component to move, and there are two limiting parts, which are located at both ends of the sliding engagement part, respectively, to limit the movement stroke of the mounting bracket.

4. The adaptive calf rotation mechanism according to claim 3, characterized in that, There are two slide rails, located on both sides of the rotating component; each slide rail is provided with a sliding engagement part, and the two ends of the rotating component abut against the corresponding sliding engagement parts and are slidably connected.

5. The adaptive calf rotation mechanism according to claim 4, characterized in that, The rotating component has sliding grooves on both sides, and the sliding mating part is located in the sliding groove and slides in the sliding groove.

6. The adaptive fitting calf rotation mechanism according to claim 2, characterized in that, The slide rail is provided with a through hole, and the rotating component is slidably connected to the through hole along the length of the through hole, and the maximum sliding stroke is limited by the two end walls of the through hole in the length direction.

7. The adaptive fitting calf rotation mechanism according to claim 6, characterized in that, The rotating component has a protrusion at the position corresponding to the through hole, and the protrusion passes through the through hole and slides in fit with the through hole; or The rotating component is slidably connected to the through hole by bolts, and a sliding fit is formed between the bolts and the through hole.

8. The adaptive calf rotation mechanism according to claim 5 or 7, characterized in that, The elastic component is a spring, and there are two of them. One end of the spring is connected to the slide rail or mounting bracket, and the other end is installed on the rotating component. The two elastic components are located on both sides of the position where the rotating component and the connecting component are rotatably connected.

9. The adaptive calf rotation mechanism according to claim 8, characterized in that, The two springs form an angle on the extension lines of the corresponding rotating parts.

10. The adaptive calf rotation mechanism according to claim 2, characterized in that, The connecting member is provided with a limit stop at the position corresponding to the rotating member, and the rotating member is provided with abutment members that cooperate with the limit stop members. The two abutment members cooperate with the limit stop members to limit the rotation range of the rotating member.

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