Forward-moving back-reversing chair frame and massage chair

Abstract

According to the forward-moving and back-reversing chair frame, through two sets of guide rails, a second guide rail is obliquely arranged relative to a first guide rail, a seat frame is driven to move forwards in the first guide rail, meanwhile, a backrest frame is pulled to move forwards in the second guide rail, and through a swing rod connected between the seat frame and a backrest part, the backrest part is driven to move forwards in the second guide rail. Meanwhile, the seat frame tilts backwards, the tilting angle of the backrest part is larger than that of the seat frame, the process that the backrest part and the seat frame change at different angles is achieved, the cost is reduced, meanwhile, the structure is stable and reliable, installation is easy, and friendly massage experience is brought to a user.

Description

Technical Field

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

[0002] Most existing home or office chairs are standard, with non-adjustable backrest and seat angles, resulting in a poor user experience and the inability to adjust to a variety of comfortable angles. Furthermore, even chairs with adjustable seat and backrest angles often lack forward-sliding capabilities or require an additional linear actuator. This results in a complex structure and significantly increases the cost of the chair frame. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention proposes a forward-moving reclining chair frame and a massage chair, thereby solving the problems of the existing chair frame inability to adjust the angle between the seat and the back, inability to achieve reclining without leaning against the wall, high chair frame cost and complex assembly.

[0004] The present invention provides a forward-moving reclining chair frame, comprising a base, a backrest frame, a seat frame, a push rod, and a rocker arm; the base is provided with a first guide rail and a second guide rail, the first guide rail being arranged along a first direction, and the second guide rail being arranged obliquely relative to the first guide rail; the push rod comprises a guide rod and a slider, one end of the guide rod being hinged to the base, the slider being arranged on the guide rod for reciprocating sliding; the seat frame is used for a user to sit on, and the slider is hinged to a first hinge point of the seat frame;

[0005] The backrest frame includes a buttocks guide portion and a backrest portion, and the backrest portion is arranged corresponding to the user's waist and back;

[0006] The seat frame is provided with a first roller, and the backrest portion is provided with a second roller, the first roller slides back and forth in the first guide rail, and the second roller reciprocates in the second guide rail;

[0007] The upper end of the swing link is hinged to the second hinge point of the seat frame, the lower end of the swing link is hinged to the base, and the backrest frame intersects with the third hinge point of the seat frame, so that the seat frame is located above the buttocks guide portion and in front of the backrest portion, and the first hinge point, the second hinge point and the third hinge point are spaced apart from each other;

[0008] The slider is driven to slide on the guide rod along the backrest toward the hip guide portion, pulling the upper end of the swing arm to swing from the backrest toward the hip guide portion, driving the first roller on the seat frame on the first guide rail and the second roller on the backrest on the second guide rail to slide along the backrest toward the hip guide portion, so that the seat frame and backrest frame move forward while the backrest frame rotates relative to the seat frame.

[0009] On the other hand, the present invention further provides a massage chair, comprising the forward-moving reclining chair frame as claimed in the claim above, wherein a guide rail is provided on the backrest frame, a reciprocating massage mechanism is provided on the guide rail, a massage swing arm is provided on the massage mechanism, the massage swing arm can be extended in a direction away from the massage mechanism, and when the massage mechanism moves to the buttocks guide portion, the massage swing arm can be extended to a position close to or above the seat frame to massage the user;

[0010] The massage machine further comprises a control device for controlling the movement of the massage mechanism and the push rod.

[0011] By adopting the above technical solution, the present invention can achieve the following technical effects: compared with the existing technology, the forward-moving reclining chair frame is through two sets of guide rails, and the second guide rail is inclined relative to the first guide rail. It drives the seat frame to move forward in the first guide rail while pulling the backrest frame to move forward in the second guide rail, and through a rocker rod connected between the seat frame and the backrest, the seat frame position is tilted backward at the same time, and the tilting angle of the backrest is greater than the tilting angle of the seat frame, realizing the process of changing different angles of the backrest and the seat frame, reducing costs while the structure is stable and reliable, simple to install, and bringing a user-friendly massage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 and Figure 2 A schematic structural diagram of a forward-moving reclining chair frame and a massage chair according to an embodiment of the present invention is depicted;

[0014] Figure 3 Draws Figure 1 Schematic diagram of the first set of crank slider mechanism structure;

[0015] Figure 4 Draws Figure 1 Schematic diagram of the second set of crank slider mechanism structure;

[0016] Figure 5 Draws Figure 1 A schematic diagram of the exploded structure of a forward-moving reclining chair frame and a massage chair;

[0017] Figure 6 Draws Figure 1 A schematic diagram of the state change of a forward-moving reclining chair frame and a massage chair;

[0018] Figure 7 Another structural diagram of a forward-moving reclining chair frame and a massage chair is depicted;

[0019] Figure 8 Draws Figure 7 A schematic diagram of the structure of the first crank slider mechanism of a forward-moving reclining chair frame;

[0020] Figure 9 Draws Figure 7 A schematic diagram of the structure of the second crank slider mechanism of a forward-moving reclining chair frame;

[0021] Figure 10 Draws Figure 7 A schematic diagram of the exploded structure of a forward-moving reclining chair frame and a massage chair;

[0022] Figure 11 Draws Figure 7 A schematic diagram of the state change of a forward-moving reclining chair frame and a massage chair;

[0023] Reference numerals

[0024] 1-base, 2-backrest frame, 3-seat frame, 5-swing rod, 11-first guide rail, 12-second guide rail, 41-guide rod, 42-slider, 21-hip guide, 22-backrest, 31-first roller, 221-second roller, 23-backrest support rod, a-first hinge point, b-second hinge point, c-third hinge point, d-fourth hinge point, 13-first vertical rod, 14-second vertical rod, 15-third vertical rod, 16-ear seat, 55-guide rail, 66-control device. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only some, not all, of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0026] Combined with attachment Figure 1-11As shown, a forward-moving reclining chair frame includes a base 1, a backrest frame 2, a seat frame 3, a push rod and a rocker arm 5; the base 1 is provided with a first guide rail 11 and a second guide rail 12, the first guide rail 11 is arranged along a first direction, and the second guide rail 12 is arranged at an angle relative to the first guide rail 11; the push rod includes a guide rod 41 and a slider 42, one end of the guide rod 41 is hinged to the base 1, and the slider 42 is reciprocatingly slidably arranged on the guide rod 41, the seat frame 3 is used for a user to sit on, and the slider 42 is hinged to the first hinge point a of the seat frame 3;

[0027] The backrest frame 2 includes a buttocks guide portion 21 and a backrest portion 22 , wherein the backrest portion 22 is arranged corresponding to the user's waist and back; the seat frame 3 is located above the buttocks guide portion 21 ; and the width of the backrest frame 2 is narrower than that of the seat frame 3 .

[0028] The seat frame 3 is provided with a first roller 31, and the backrest portion 22 is provided with a second roller 221. The first roller 31 slides back and forth in the first guide rail 11, and the second roller 221 reciprocates in the second guide rail 12. The backrest frame 2 also includes a backrest support rod 23, one end of which is fixed to the backrest portion 22, and the second roller 221 is provided at the bottom end of the backrest support rod 23.

[0029] The upper end of the swing link 5 is hinged to the second hinge point b of the seat frame 3, the lower end of the swing link 5 is hinged to the base 1, and the backrest frame 2 intersects with the third hinge point c of the seat frame 3, so that the seat frame 3 is located above the buttocks guide portion 21 and in front of the backrest portion 22, and the first hinge point a, the second hinge point b, and the third hinge point c are spaced apart from each other;

[0030] The slider 42 is driven to slide on the guide rod 41 along the backrest 22 toward the hip guide portion 21, pulling the upper end of the rocker arm 5 to swing from the backrest 22 toward the hip guide portion 21, driving the first roller 31 on the seat frame 3 on the first guide rail 11 and the second roller 221 on the backrest 22 on the second guide rail 12 along the backrest 22 toward the hip guide portion 21, so that the seat frame 3 and the backrest frame 2 move forward while the backrest frame 2 rotates relative to the seat frame 3.

[0031] Specifically, if Figure 3 As shown, the rocker arm 5, the seat frame 3 and the first guide rail 11 form a first crank slider mechanism. Figure 4As shown, the rocker arm 5, the seat frame 3, the first guide rail 11, the backrest frame 22 and the second guide rail 12 constitute a second crank slider mechanism, that is, the first crank slider mechanism serves as the crank driving force of the second crank slider mechanism. The second crank slider mechanism is a compound motion, and the shape and motion trajectory of the first crank slider mechanism are different from those of the second crank slider mechanism.

[0032] In other words, the forward-moving reclining chair frame is realized by two sets of crank slider mechanisms. The first set of crank slider mechanisms controls the forward sliding of the seat frame, and the second set of crank sliders controls the forward sliding of the backrest. An additional set of guide rails is added to control the forward sliding of the backrest. The two sets of crank sliders separately control the seat frame and the backrest, realizing the movement of the seat frame and the backrest, thereby realizing the function of the chair frame sliding forward and reclining backward, that is, a technology of completely zero leaning against the wall in a forward sliding manner can be realized. At the same time, the seat frame position is also tilted backward, and the tilting angle of the backrest is greater than the tilting angle of the seat frame, realizing the process of different angle changes of the backrest and the seat frame. The most critical part is that the second set of crank slider mechanisms uses the first set of crank slider mechanisms as the driving force, and after superposition, the backrest is realized. The seat frame is moved forward and backward in a limited manner by a rocker bar connected between the two sets of crank sliders. In this way, a single push rod drives the two sets of crank slider mechanisms to move in conjunction, reducing costs while maintaining a stable and reliable structure and simple installation, providing a user-friendly massage experience.

[0033] Furthermore, in one example, Figure 5 As shown, the heights of the second hinge point b and the third hinge point c are both higher than the height of the first hinge point a, and the second hinge point b is higher than the third hinge point c. Thus, when the slider 42 is driven to slide on the guide rod 41 along the backrest 22 toward the buttocks guide portion 21, the seat frame 3 and the backrest frame 2 move forward, the backrest 22 reclines, and the front end of the seat frame 3 is lifted. This increases the angle between the seat frame 3 and the backrest 22. This allows the user to lie more comfortably after the chair frame reclines, improving massage comfort.

[0034] Furthermore, in this embodiment of the present invention, the seat frame can be positioned above the buttocks guide portion of the backrest frame in any position. This provides space for the massage mechanism to move below the seat frame when used as a massage chair, massaging the user's thighs and buttocks. This improves comfort while achieving zero-gravity and zero-wall support.

[0035] Furthermore, in another example, Figure 7-10As shown, the connection position of the upper end of the rocker arm 5 can be changed and the chair frame can also be moved forward and backward. Specifically, the upper end of the rocker arm 5 is hinged to the fourth hinge point d of the backrest frame 2, the lower end of the rocker arm 5 is hinged to the base 1, and the third hinge point c of the seat frame 3 is hinged to the rear end of the hip guide portion 21. The height of the fourth hinge point d and the height of the third hinge point c are both higher than the height of the first hinge point a. In this way, the slider 42 is driven to slide on the guide rod 41 along the backrest 22 toward the hip guide portion 21, driving the first roller 31 on the seat frame 3 on the first guide rail 11 and the second roller 221 on the backrest 22 on the second guide rail 12 along the backrest 22 toward the hip guide portion 21. At the same time, the upper end of the rocker arm 5 is pulled to swing from the backrest 22 toward the hip guide portion 21, so that when the chair frame moves forward and backward, the angle between the seat frame 3 and the backrest 22 becomes larger, as shown in FIG. Figure 11 shown.

[0036] As you can see, the second design is very similar to the first, differing only in the location of the upper hinge of the swing arm. The first is hinged to the seat frame, while the second is hinged to the backrest frame. The arc of travel changes accordingly, but the general principles remain essentially the same: both offer zero-wall, zero-gravity functionality.

[0037] Furthermore, in one embodiment, the first guide rail 11 is arranged horizontally, and the lowest end of the second guide rail 12 is higher than the first guide rail 11. The base 1 is also provided with a first vertical rod 13, a second vertical rod 14 and a third vertical rod 15 at intervals in sequence, and the heights of the first vertical rod 13, the second vertical rod 14 and the third vertical rod 15 are increased in sequence;

[0038] The first guide rail 11 is horizontally disposed on the first vertical rod 13 and the second vertical rod 14 . The second guide rail 12 is obliquely disposed on the second vertical rod 14 and the third vertical rod 15 and is higher than the first guide rail 11 .

[0039] Furthermore, in one embodiment, the base 1 is provided with an ear seat 16, which is disposed between the second vertical rod 14 and the third vertical rod 15 and is close to the third vertical rod 15. The lower end of the swing arm 5 is hingedly connected to the ear seat 16. By providing the ear seat at a certain height, the lifting angle of the front end of the seat frame can be increased accordingly, thereby improving the user's riding comfort and preventing the user from being ejected from the seat during massage.

[0040] Furthermore, in one embodiment, the chair also includes a calf support and a calf push rod. One end of the calf push rod is hinged to the front end of the base, and the other end is hinged to the calf support. The calf support is hinged to the front end of the seat frame. The calf push rod drives the calf support to rise and fall. This allows the calf support to be repeatedly raised and lowered when the chair frame is reclined, stretching the leg and abdominal muscles and achieving a massage effect. Because the calf support can use a standard structure in the industry, it is not shown in the figure.

[0041] The installation structure and working principle of the chair frame according to the embodiment of the present invention are described in detail below with reference to the accompanying drawings.

[0042] like Figure 1-6 As shown, the chair frame scheme of the present application includes a base 1, a backrest frame 2, a seat frame 3, a push rod, a rocker arm 5 and a calf; the base 1 is provided with a first guide rail 11 and a second guide rail 12, the first guide rail 11 is arranged horizontally, the second guide rail 12 is arranged inclined relative to the first guide rail 11, and the height of the second guide rail 12 is slightly higher than the first guide rail 11; the push rod includes a guide rod 41 and a slider 42, one end of the guide rod 41 is hinged to the base 1, and the slider 42 is arranged on the guide rod 41 for reciprocating sliding, wherein the seat frame 1 is provided with three hinge points and two sets of guide rails, the slider 42 is hinged to the first hinge point a of the seat frame 1, the upper end of the rocker arm 5 is hinged to the seat frame 3 at the second hinge point b, the seat frame 3 slides in the first guide rail 11, and the rocker arm 5, the seat frame 3 and the first guide rail 11 constitute a first crank slider mechanism. The backrest frame 2 is first hinged to the third hinge point c of the seat frame 3, forming a rotational motion with the seat frame 3, and the other end slides in the second set of slide rails. The second set of crank sliders uses the first set of crank sliders as cranks and is driven by the first set of crank sliders to form a second set of crank slider mechanisms. After the seat frame 3 is driven, the first set of crank sliders begins to move, and the backrest frame 2 is linked to reciprocate in the second guide rail 12 and rotates at the third hinge point c, achieving a movement process in which the front end of the seat frame is upward, the backrest frame is backward, and the entire frame slides forward. As the chair frame moves forward and backward, the angle between the seat frame and the backrest increases. The crank slider mechanism used in this solution has a working principle of sliding forward when the rocker arm swings.

[0043] Specifically, the length of the pin when installing the first roller 31 is greater than the length of the pin when installing the second roller 221, so that the width of the backrest frame 2 can be adapted to be narrower than the width of the seat frame 3, and the sliding movement of the first roller 31 and the second roller 221 in the first guide rail 11 and the second guide rail 12 respectively is not affected.

[0044] In addition, the calf part can be driven independently or in a linkage manner when the backrest is reversed. This is a common technical structure in this field and will not be described in detail in the embodiments of the present invention.

[0045] like Figure 6 As shown, this is the process of chair frame movement, the backrest slides forward and reclines at the same time, and the seat frame tilts upward in the final stage.

[0046] An embodiment of the present invention further provides a massage chair, comprising the aforementioned forward-moving reclining chair frame, wherein the backrest frame is provided with a guide rail 55, and a reciprocating massage mechanism (not shown) is provided on the guide rail 55. The massage mechanism is provided with a massage swing arm, which can extend in a direction away from the massage mechanism. When the massage mechanism moves to the buttocks guide portion, the massage swing arm can extend to a position close to or above the seat frame to massage the user.

[0047] Also included is a control device 66 that controls the massage mechanism and the push rod movement.

[0048] In other words, the massage chair provided by the embodiment of the present invention is implemented by two sets of crank slider mechanisms. The first set of crank slider mechanisms controls the forward sliding of the buttocks guide portion, and the second set of crank sliders controls the forward sliding of the backrest. An additional set of guide rails is added to control the forward sliding of the backrest. The two sets of crank sliders separately control the seat frame and backrest, enabling the seat frame and backrest to move independently, thereby achieving the function of the chair frame sliding forward and backward, that is, a completely zero-wall-relative-to-forward sliding technology. At the same time, the seat frame position is also tilted backward, and the tilting angle of the backrest is greater than the tilting angle of the seat frame, achieving the process of different angle changes of the backrest and the seat frame. The most critical point is that the second set of crank sliders uses the first set of crank sliders as the driving force, and after superposition, the backrest is linked. The seat frame is limited to forward and backward movement by a rocker rod connected between the two sets of crank sliders. In this way, a single push rod drives the two sets of crank slider mechanisms to link, reducing costs while maintaining a stable and reliable structure and simple installation, providing a user-friendly massage experience.

[0049] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0050] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A forward-moving reclining chair frame, characterized in that: The utility model comprises a base, a backrest frame, a seat frame, a push rod and a rocker arm; the base is provided with a first guide rail and a second guide rail, the first guide rail is arranged along a first direction, and the second guide rail is arranged obliquely relative to the first guide rail; the push rod comprises a guide rod and a slider, one end of the guide rod is hinged to the base, and the slider is arranged on the guide rod for reciprocating sliding; the seat frame is used for a user to sit on, and the slider is hinged to the first hinge point of the seat frame; The backrest frame includes a buttocks guide portion and a backrest portion, and the backrest portion is arranged corresponding to the user's waist and back; The seat frame is provided with a first roller, and the backrest portion is provided with a second roller, the first roller slides back and forth in the first guide rail, and the second roller reciprocates in the second guide rail; The upper end of the swing link is hinged to the second hinge point of the seat frame, the lower end of the swing link is hinged to the base, and the backrest frame intersects with the third hinge point of the seat frame, so that the seat frame is located above the buttocks guide portion and in front of the backrest portion, and the first hinge point, the second hinge point and the third hinge point are spaced apart from each other; The slider is driven to slide on the guide rod along the backrest toward the hip guide portion, pulling the upper end of the swing arm to swing from the backrest toward the hip guide portion, driving the first roller on the seat frame on the first guide rail and the second roller on the backrest on the second guide rail along the backrest toward the hip guide portion, so that the seat frame and the backrest frame move forward and the backrest frame rotates relative to the seat frame.

2. The forward-moving reclining chair frame according to claim 1, characterized in that: The height of the second hinge point and the height of the third hinge point are both higher than the height of the first hinge point, and the second hinge point is higher than the third hinge point; the slider is driven to slide on the guide rod along the backrest toward the buttocks guide part, so that the seat frame and the backrest frame move forward, the backrest is tilted back, and the front end of the seat frame is lifted, and the angle between the seat frame and the backrest becomes larger.

3. The forward-moving reclining chair frame according to claim 1, characterized in that: The upper end of the rocker arm is hinged to the fourth hinge point of the backrest frame, the lower end of the rocker arm is hinged to the base, the third hinge point of the seat frame is hinged to the rear end of the hip guide portion, and the height of the fourth hinge point and the height of the third hinge point are both higher than the height of the first hinge point.

4. The forward-moving reclining chair frame according to claim 1, characterized in that: The first guide rail is arranged horizontally, and the lowest end of the second guide rail is higher than the first guide rail.

5. The forward-moving reclining chair frame according to claim 4, characterized in that: The base is further provided with a first vertical rod, a second vertical rod and a third vertical rod at intervals in sequence, and the heights of the first vertical rod, the second vertical rod and the third vertical rod are increased in sequence; The first guide rail is horizontally arranged on the first vertical rod and the second vertical rod, and the second guide rail is obliquely arranged on the second vertical rod and the third vertical rod and is higher than the first guide rail.

6. The forward-moving reclining chair frame according to claim 5, characterized in that: An ear seat is also provided on the base. The ear seat is provided between the second vertical rod and the third vertical rod and is close to the third vertical rod. The lower end of the swing rod is hinged to the ear seat.

7. The forward-moving reclining chair frame according to claim 1, characterized in that: It also includes a calf frame and a calf push rod, one end of the calf push rod is hinged to the front end of the base, and the other end is hinged to the calf frame, and the calf frame is hinged to the front end of the seat frame; the calf push rod drives the calf frame to be lifted or lowered.

8. The forward-moving reclining chair frame according to claim 1, characterized in that: The width of the backrest frame is narrower than the width of the seat frame.

9. A massage chair, characterized in that: The forward-moving reclining chair frame comprises the one described in claims 1 to 8, wherein the backrest frame is provided with a guide rail, the guide rail is provided with a reciprocating massage mechanism, the massage mechanism is provided with a massage swing arm, the massage swing arm can be extended in a direction away from the massage mechanism, and when the massage mechanism moves to the buttocks guide portion, the massage swing arm can be extended to a position close to or above the seat frame to massage the user; The utility model further comprises a control device for controlling the movement of the massage mechanism and the push rod.

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