Massage chair rack with self-adaptive foot machine unit

Abstract

The invention discloses a massage chair frame with a self-adaptive foot machine unit, which comprises a seat frame, the foot machine unit rotatably connected to the seat frame, and a driving mechanism arranged on the seat frame and used for driving the foot machine unit to adjust the position, and the foot machine unit comprises a connecting piece used for connecting the seat frame and a supporting piece used for fitting the shank, the supporting piece is connected with the connecting piece and rotatably connected to the seat rack through the connecting piece, and 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; the rotating assembly is rotatably connected with the connecting piece, so that the mounting frame is rotatably matched with the connecting piece; and the driving mechanism is connected with the connecting piece or the mounting frame so as to drive the mounting frame to adjust the position.

Description

Technical Field

[0001] The present invention relates to a massage chair, specifically to a massage chair frame with an adaptive footrest unit. Background Art

[0002] Currently, the footrest units of commercially available massage chairs generally adopt a fixed design or a semi-adjustable design. Related technologies can be seen in:

[0003] For the fixed design, its application is gradually decreasing. With this fixed design, the calf cannot be adjusted in angle, and the user can only place the calf in a suitable position by himself / herself to cooperate with the massage components for massage.

[0004] Currently, more are adopting the semi-adjustable design. The technical solution disclosed in the patent publication text of a variable-angle massage chair frame and massage chair (CN119453681A) in the prior art can be referred to. Although the calf mechanism in this solution can adjust the angle to a certain extent, this adjustment cannot adaptively adjust and fit the calves of different people, and there is likely to be a certain angle, resulting in discomfort when the user's calf contacts the calf mechanism. At the same time, the massage experience is also lacking. Therefore, a calf mechanism that can better adaptively fit is still needed to provide a better contact experience and massage experience for the user. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a massage chair frame with an adaptive footrest unit, which can automatically adjust the support angle according to the calf shape of the user, improving the fitting degree and massage comfort.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A massage chair frame with an adaptive footrest unit, comprising a seat frame, a footrest unit rotatably connected to the seat frame, and a driving mechanism arranged on the seat frame for driving the footrest unit to adjust its position. The footrest unit includes a connecting member for connecting to the seat frame and a support member for fitting the calf. The support member is connected to the connecting member and is rotatably connected to the seat frame through the connecting member. The support member includes a mounting frame, two rotating components respectively arranged on both sides of the mounting frame, and a massage component mounted on the mounting frame. The rotating component is rotatably connected to the connecting member to form a rotatable fit between the mounting frame and the connecting member. The driving mechanism is connected to the connecting member or the mounting frame to drive the mounting frame to adjust its position.

[0007] As a further improvement of the present invention, the rotating assembly includes a rotating member for rotatably connecting with a connecting member in cooperation, a slide rail slidably connected to the rotating member, an elastic member disposed between the rotating member and the slide rail or between the rotating member and the mounting bracket, and the mounting bracket is fixedly connected to the slide rail; the elastic member provides a movement tendency for the mounting bracket to move towards the rotating member, and the mounting bracket is slidably engaged with the rotating member through the slide rail to move closer to or away from the rotating member.

[0008] As a further improvement of the present invention, a limiting portion for restricting the maximum stroke of the mounting bracket away from the rotating member is provided on the slide rail or the rotating member to prevent the slide rail from disengaging from the rotating member; a sliding engagement portion for allowing the rotating member to move is provided on the slide rail, and the number of the limiting portions is two, which are respectively located at both ends of the sliding engagement portion to limit the movement stroke of the mounting bracket.

[0009] As a further improvement of the present invention, the number of the slide rails is two, and they are respectively located on both sides of the rotating member; sliding engagement portions are provided on both of the two slide rails, and the two end portions on both sides of the rotating member are in contact with and slidably connected to the corresponding sliding engagement portions; chutes are provided on both sides of the rotating member, and the sliding engagement portions are located in the chutes and are slidably engaged with the chutes.

[0010] As a further improvement of the present invention, through holes are provided on the slide rail, and the rotating member is slidably connected along the length of the through holes in cooperation with the through holes, and the maximum sliding stroke is restricted by the hole walls at both ends in the length direction of the through holes.

[0011] As a further improvement of the present invention, a protrusion is provided at a position on the rotating member corresponding to the through hole, and the protrusion passes through the through hole and is slidably engaged with the through hole; or

[0012] The rotating member is slidably connected to the through hole by bolts, and a sliding fit is formed between the bolts and the through hole.

[0013] As a further improvement of the present invention, the elastic member is a spring, and the number of the springs is two. One end of each spring is connected to the slide rail or the mounting bracket, and the other end is mounted on the rotating member. The two elastic members are respectively located on both sides of the position where the rotating member is rotatably connected to the connecting member.

[0014] As a further improvement of the present invention, an included angle is formed on the extension lines of the corresponding ends of the two springs.

[0015] As a further improvement of the present invention, the seat frame includes a base and a bracket mounted on the base, and the bracket can adjust its tilting posture relative to the base; the driving mechanism includes an actuator for driving the bracket to adjust its posture, and a linkage for driving the connecting member or the mounting bracket to move. One end of the linkage is connected to the base, and the other end is connected to the connecting member or the mounting bracket. When the actuator drives the bracket to adjust its posture, the bracket drives the connecting member and the mounting bracket to move, and drives the connecting member and the mounting bracket to adjust their postures through the linkage.

[0016] As a further improvement of the present invention, the linkage includes a first connecting rod and a second connecting rod. The second connecting rod is rotatably connected to the base, and both ends of the first connecting rod are rotatably connected to the connecting member and the second connecting rod respectively. When the actuator drives the bracket to adjust its tilting posture relative to the base, the bracket drives the first connecting rod and the second connecting rod to act, so as to drive the connecting member to rotate relative to the bracket.

[0017] The beneficial effects of the present invention are as follows: through the rotatable connection of the rotating assembly, the mounting bracket adaptively adjusts the angle around the axis of the connecting member, so that the massage assembly fits the calf curve. The rotating assembly cooperates with the rotational relationship between the connecting member and the seat bracket, enabling multiple rotational adjustments. This movable characteristic allows the mounting bracket to dynamically adjust according to the shape of the calf, and the massage assembly applies force evenly accordingly, avoiding excessive local pressure and enhancing the fitting property and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Figure 3 is a schematic diagram of the overall structure of the present invention (the scheme with through holes on the slide rail);

[0021] Figure 4 is a schematic diagram of the rotating structure of the present invention (the scheme with through holes on the slide rail);

[0022] Figure 5 is a schematic diagram of the matching structure of the limiting stop and the abutting member of the present invention;

[0023] Figure 6 is a schematic diagram of the overall structure of the present invention (the scheme with a chute on the rotating member);

[0024] Figure 7 is a schematic diagram of the sliding matching part structure of the present invention (the scheme with a chute on the rotating member);

[0025] Figure 8 is a schematic diagram of the rotating member structure of the present invention (the scheme with a chute on the rotating member).

[0026] Reference numerals in the drawings: 11, seat frame; 111, base; 112, bracket; 12, drive mechanism; 121, actuator; 122, linkage member; 1221, first link; 1222, second link; 2, connecting member; 21, limiting stop member; 3, mounting bracket; 4, rotating assembly; 41, rotating member; 411, chute; 412, protrusion; 413, abutting member; 42, slide rail; 421, limiting portion; 422, sliding mating portion; 423, through hole; 43, elastic member; 5, massage assembly. Detailed implementation manners

[0027] The following will further elaborate on the present invention in conjunction with the embodiments given in the drawings.

[0028] Refer to Figure 1-8 As shown, a massage chair frame with an adaptive footrest unit includes a seat frame 11, a footrest unit rotatably connected to the seat frame 11, and a drive mechanism 12 provided on the seat frame 11 for driving the footrest unit to adjust its position. The footrest unit includes a connecting member 2 for connecting to the seat frame 11 and a support member for fitting against the calf. The support member is connected to the connecting member 2 and is rotatably connected to the seat frame 11 through the connecting member 2. The support member includes a mounting bracket 3, two rotating assemblies 4 respectively provided on both sides of the mounting bracket 3, and a massage assembly 5 mounted on the mounting bracket 3. The rotating assembly 4 is rotatably connected to the connecting member 2 to form a rotatable fit between the mounting bracket 3 and the connecting member 2. The drive mechanism 12 is connected to the connecting member 2 or the mounting bracket 3 to drive the mounting bracket 3 to adjust its position.

[0029] Refer to Figure 1 、 2 As shown, in this solution, the drive mechanism 12 can drive by cooperating with the connecting member 2 or the mounting bracket 3, and then adjust the position of the mounting bracket 3, which can initially adjust the supporting effect of the mounting bracket 3 on the calf. And through the rotation of the rotating assembly 4, the mounting bracket 3 itself can further rotate, so that multiple rotations can be achieved in the calf part of this solution. This movable characteristic allows the mounting bracket 3 to dynamically adjust according to the shape of the calf, with a better fitting effect, which is equivalent to allowing the position of the mounting bracket 3 to be adjusted more flexibly, and then better fitting the calf curve. At this time, the massage assembly 5 applies force to make the massage intensity more uniform, avoiding excessive local pressure and improving the fitting and comfort.

[0030] In use, the user's calf is positioned on the support member, i.e., on the mounting bracket 3. At this time, a housing can be configured on the mounting bracket 3 to improve the comfort of supporting the user's calf. When performing a massage action, the connecting member 2 can first rotate to adjust the position of the overall mounting bracket 3. Since the mounting bracket 3 itself is rotatably engaged with the connecting member 2 through the rotating assembly 4, the rotation dimension can be further increased at this time, so that the position corresponding to the calf on the mounting bracket 3 can fit the calf more closely.

[0031] In the above solution, the seat frame 11 includes a base 111 and a bracket 112 mounted on the base 111. The bracket 112 can adjust its tilting posture relative to the base 111. The driving mechanism 12 includes an actuator 121 for driving the bracket 112 to adjust its posture, and a linkage 122 for driving the connecting member 2 or the mounting bracket 3 to move. One end of the linkage 122 is connected to the base 111, and the other end is connected to the connecting member 2 or the mounting bracket 3. When the actuator 121 drives the bracket 112 to adjust its posture, the bracket 112 drives the connecting member 2 and the mounting bracket 3 to move, and drives the connecting member 2 and the mounting bracket 3 to adjust their postures through the linkage 122.

[0032] The bracket 112 and the base 111 can be slidably connected through a track, so that the bracket 112 slides along the track on the base 111 to adjust its tilting posture. Or it can be connected to the base 111 through a plurality of connecting rods. The actuator 121 is used to drive the bracket 112 to move, and at the same time, the connecting rods are used to generate a supporting effect. During the movement of the bracket 112, the connecting rods will swing. At this time, the tilting state of the bracket 112 can be adjusted. The connection by the connecting rod method can be referred to Figure 1 as shown in

[0033] In this solution, the actuator 121 is used to drive the bracket 112 to adjust its posture. At the same time, the linkage 122 can be used to drive the connecting member 2 or the mounting bracket 3 to move synchronously, so as to adjust the posture synchronously, and cooperate with the rotation of the rotating assembly 4 to further fit the calf for massage.

[0034] Preferably, the linkage 122 includes a first connecting rod 1221 and a second connecting rod 1222. The second connecting rod 1222 is rotatably connected to the base 111. Both ends of the first connecting rod 1221 are rotatably connected to the connecting member 2 and the second connecting rod 1222 respectively. When the actuator 121 drives the bracket to adjust its tilting posture relative to the base 111, the bracket 112 drives the first connecting rod 1221 and the second connecting rod 1222 to act, so as to drive the connecting member 2 to rotate relative to the bracket 112.

[0035] This solution can directly drive the connecting member 2 to rotate relative to the bracket 112 through the link mechanism formed by the cooperation of the first link 1221 and the second link 1222. This structure is simple and only two links are needed to complete one-stage adjustment.

[0036] The above actuator 121 can adopt a hydraulic push rod or a pneumatic push rod, where the cylinder part is installed on the base 111 and the push rod part is connected to the bracket 112.

[0037] In order to further improve the fitting effect on the calf, in an optional implementation, the rotating assembly 4 includes a rotating member 41 for rotatably connecting with the connecting member 2, a slide rail 42 slidably connected to the rotating member 41, and an elastic member 43 disposed between the rotating member 41 and the slide rail 42 or between the rotating member 41 and the mounting frame 3. The mounting frame 3 is fixedly connected to the slide rail 42; the elastic member 43 provides a movement tendency for the mounting frame 3 to move towards the rotating member 41, and the mounting frame 3 is slidably engaged with the rotating member 41 through the slide rail 42 to move close to or away from the rotating member 41.

[0038] The elastic member 43 (such as a spring, torsion spring or rubber band) maintains the positions of the slide rail 42 and the mounting frame 3 through a pre-tightening force. When pressure is applied to the calf, the slide rail 42 slides along the rotating member 41, and the elastic member 43 compresses and generates a reverse elastic force to form a dynamic balance. This design enables the mounting frame 3 to automatically adjust the height and angle when the calf posture changes, ensuring that the massage assembly 5 always closely adheres to the calf surface, while the elastic buffer reduces mechanical shock. Moreover, due to the setting of the elastic member 43, the adaptability can be further improved, enabling the mounting frame 3 to always maintain an adaptive fitting state while the calf posture changes. In this design, the massage assembly 5 is installed on the mounting frame 3, and the mounting frame 3 can cooperate with the slide rail 42 and the rotating member 41 to produce a rotational cooperation effect. For example, when the massage force of the massage assembly 5 is too large, the reaction force during massage can cause a certain sliding between the slide rail 42 and the rotating member 41, and cooperate with the elastic member 43 as a buffer, which can relieve a part of the excessive massage force and improve the comfort of massage at the same time.

[0039] Refer to Figure 6 、 7 As shown in FIGS. 8 (where the spring is not connected to the rotating member 41, and the spring can be stretched upward to hook with the rotating member 41 to complete the connection), as an implementation for further improving the cooperation stability between the slide rail 42 and the rotating member 41, a limiting portion 421 for restricting the maximum stroke of the mounting frame 3 away from the rotating member 41 is provided on the slide rail 42 or the rotating member 41 to prevent the slide rail 42 from disengaging from the rotating member 41; a sliding cooperation portion 422 for allowing the rotating member 41 to move is provided on the slide rail 42. The number of the limiting portions 421 is two, which are respectively located at both ends of the sliding cooperation portion 422 to limit the movement stroke of the mounting frame 3.

[0040] The limiting part 421 prevents the sliding rail 42 from detaching from the rotating part 41 by blocking the sliding limit of the sliding rail 42, ensuring the safe operation of the mechanism within the preset stroke. For example, when excessive pressure is applied to the user's calf, the sliding rail 42 stops moving when it reaches the position of the limiting part 421, avoiding structural damage. This design combines the buffering ability of the elastic component 43, which not only ensures the adjustment range but also improves the reliability of the mechanism.

[0041] In an optional further setting, the number of sliding rails 42 is two, and they are respectively located on both sides of the rotating part 41; sliding cooperation parts 422 are provided on both sliding rails 42, and the two end parts of the rotating part 41 are in contact with and slidably connected to the corresponding sliding cooperation parts 422.

[0042] The double-sliding-rail 42 design makes the sliding state more stable when there is a sliding cooperation between the sliding rail 42 and the rotating part 41; the contact between the end part of the rotating part 41 and the sliding cooperation part 422 further improves the stability, ensuring that the sliding rail 42 moves in a straight line. This structure enhances the stability of the mechanism and avoids the jamming problem caused by uneven unilateral force.

[0043] In order to make the cooperation state between the rotating part 41 and the sliding rail 42 more stable, in an optional solution, chutes 411 are provided on both sides of the rotating part 41, and the sliding cooperation parts 422 are located in the chutes 411 and are slidably engaged with the chutes 411. The chutes 411 provide a guiding track for the sliding cooperation parts 422, ensuring that the sliding rail 42 moves along a fixed path, and the cooperation between the two is more stable without the problem of detachment.

[0044] In another implementation manner, different from the way that the two ends of the rotating part 41 are in contact with the sliding rail 42, referring to Figure 3 、 4 as shown, where: through holes 423 are provided on the sliding rail 42, and the rotating part 41 is slidably connected along the length of the through holes 423 in cooperation with the through holes 423, and the maximum sliding stroke is limited by the two end hole walls in the length direction of the through holes 423. The length of the through holes 423 determines the maximum sliding stroke. When the rotating part 41 slides in the through holes 423, the two end hole walls limit its moving range. This structure simplifies the limiting design, and at the same time, the cooperation between the through holes 423 and the rotating part 41 reduces the processing difficulty and is more convenient for assembly, which is suitable for large-scale production.

[0045] Specifically, a protrusion 412 is provided at the position of the rotating part 41 corresponding to the through hole 423, and the protrusion 412 is inserted into the through hole 423 and is slidably engaged with the through hole 423; or

[0046] the rotating part 41 is slidably connected to the through hole 423 by bolts, and a sliding cooperation is formed between the bolts and the through hole 423.

[0047] The clearance fit between the protrusion 412 and the through hole 423 allows the rotating member 41 to slide flexibly, and the bolt connection can adjust the sliding resistance to meet the needs of different users. Both solutions can achieve reliable connection and are convenient for maintenance and replacement. After the protrusion 412 passes through the through hole 423, it can also be installed by means of threaded connection between the bolt and the end of the protrusion 412. At this time, the main function of the bolt is to limit the separation of the protrusion 412 from the slide rail 42, rather than for sliding connection.

[0048] The aforementioned elastic member 43 can be a spring, specifically as follows: The elastic member 43 is a spring, and the number is two. One end of the spring is connected to the slide rail 42 or the mounting bracket 3, and the other end is mounted on the rotating member 41. The two elastic members 43 are respectively located on both sides of the position where the rotating member 41 is rotatably connected to the connecting member 2.

[0049] The arrangement of the double springs can provide balanced elastic force as much as possible and avoid overloading of a single spring. When the slide rail 42 is pressed, the springs on both sides pull the rope synchronously, making the translation of the mounting bracket 3 stable, preventing massage deviation caused by tilting and deterioration of the fitting effect. The aforementioned springs are preferably symmetrically distributed on both sides of the path of the position where the rotating member 41 and the connecting member 2 are rotatably connected in the sliding direction of the rotating member 41, which can maximize the uniformity of the elastic force provided by the two springs.

[0050] Preferably, an included angle is formed on the extension line corresponding to one end of the two springs with respect to the rotating member 41. The design of this included angle can enable the rotating member 41 to generate a lateral pulling force through the spring, thereby improving the stability of the rotating member 41 and the driving effect of the rotating member 41 on the mounting bracket 3 when rotating. Especially when the rotating member 41 and the slide rail 42 are connected through the through hole 423, the lateral support effect will be weakened at this time. Through the angle design of the spring, a lateral cooperation effect can be provided. Moreover, under the cooperation of this solution, the way the rotating member 41 drives the mounting bracket 3 to rotate is through the spring for linkage and buffering, which can provide a better self-adaptive fitting effect and make the provided supporting force transition more uniform.

[0051] In order to keep the fitting effect of the calf and make the massage effect more stable, a limiting stop 21 is provided at the position corresponding to the rotating member 41 on the connecting member 2, and two abutting members 413 cooperating with the limiting stop 21 are provided on the rotating member 41. The two abutting members 413 cooperate with the limiting stop 21 to limit the rotation range of the rotating member 41.

[0052] The limitation of this rotation range can prevent the mounting bracket 3 from rotating excessively, resulting in a weakened fitting effect and the massage assembly 5 being unable to generate a stable massage effect on the calf.

[0053] It should be noted that the above description is made for a single rotating component 4. In fact, the number of rotating components 4 is two, which are respectively located on both sides of the mounting bracket 3 and are both connected by the connecting member 2.

[0054] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A massage chair frame with an adaptive foot unit, comprising a seat frame, a foot unit rotatably connected to the seat frame, and a driving mechanism disposed on the seat frame for driving the foot unit to adjust its position, characterized in that: The foot unit includes a connecting piece for connecting to a seat frame and a supporting piece for fitting the calf. The supporting piece is connected to the connecting piece and is rotatably connected to the seat frame through the connecting piece. The supporting piece includes a mounting frame, two rotating components respectively arranged on both sides of the mounting frame, and a massage component installed on the mounting frame; the rotating component is rotatably connected to the connecting piece to form a rotatable fit between the mounting frame and the connecting piece; the driving mechanism is connected to the connecting piece or the mounting frame to drive the mounting frame to adjust its position.

2. The massage chair frame with an adaptive foot unit according to claim 1, characterized in that: The rotating assembly includes a rotating member rotatably connected to a connecting member, a slide rail slidably connected to the rotating member, an elastic component is arranged between the rotating member and the slide rail or between the rotating member and the mounting frame, and the mounting frame is fixedly connected to the slide rail; the elastic component provides a movement tendency for the mounting frame to move toward the rotating member, and the mounting frame moves closer to or away from the rotating member through the sliding cooperation between the slide rail and the rotating member.

3. The massage chair frame with an adaptive foot unit according to claim 2, characterized in that: The slide rail or the rotating part is provided with a limiting part for limiting the mounting frame from being away from the maximum stroke of the rotating part, so as to limit the slide rail from being separated from the rotating part; the slide rail is provided with a sliding fitting part for allowing the rotating part to move, and the limiting parts are two in number, which are respectively located at both ends of the sliding fitting part, so as to limit the movable stroke of the mounting frame.

4. The massage chair frame with an adaptive foot unit according to claim 3, characterized in that: There are two slide rails, which are respectively located on both sides of the rotating member; a sliding fitting part is provided on each of the two slide rails, and both side ends of the rotating member abut against and are slidably connected to the corresponding sliding fitting parts; sliding grooves are provided on both sides of the rotating member, and the sliding fitting parts are located in the sliding grooves and slidingly fit with the sliding grooves.

5. The massage chair frame with an adaptive foot unit according to claim 2, characterized in that: The slide rail is provided with a through hole, and the rotating member is slidably connected with the through hole along the length of the through hole, and the maximum sliding stroke is limited by the hole walls at both ends of the through hole in the length direction.

6. The massage chair frame with an adaptive foot unit according to claim 5, characterized in that: A protrusion is provided on the rotating member at a position corresponding to the through hole, and the protrusion is penetrated in the through hole and slidably cooperates with the through hole; or The rotating member is slidably connected to the through hole through bolts, and a sliding fit is formed between the bolts and the through hole.

7. The massage chair frame with an adaptive foot unit according to claim 4 or 6, 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 the mounting frame, and the other end is installed on the rotating member. The two elastic components are respectively located on both sides of the position where the rotating member is rotatably connected to the connecting member.

8. The massage chair frame with an adaptive foot unit according to claim 7, characterized in that: The two springs form an angle on the extension line of one end of the rotating member.

9. The massage chair frame with an adaptive foot unit according to any one of claims 1 to 6, characterized in that: The seat frame includes a base and a bracket installed on the base, and the bracket can adjust the tilting posture relative to the base; the driving mechanism includes an actuator for driving the bracket to adjust the posture, and a linkage part for driving the connecting part or the mounting frame to move, one end of the linkage part is connected to the base, and the other end is connected to the connecting part or the mounting frame. When the actuator drives the bracket to adjust the posture, the bracket drives the connecting part and the mounting frame to move, and drives the connecting part and the mounting frame to adjust the posture through the linkage part.

10. The massage chair frame with an adaptive foot unit according to claim 9, characterized in that: The linkage member includes a first connecting rod and a second connecting rod, the second connecting rod is rotatably connected to the base, and both ends of the first connecting rod are rotatably connected to the connecting member and the second connecting rod respectively. When the actuator drives the bracket to adjust the tilting posture relative to the base, the bracket drives the first connecting rod and the second connecting rod to move, so as to drive the connecting member to rotate relative to the bracket.

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