Forward-moving back-reversing chair frame and massage chair

Abstract

According to the forward-moving reverse-back chair frame and the massage chair, two sets of crank sliding block mechanisms and a set of four-connecting-rod structure are overlaid, a rear swing rod is driven by a driving device to rotate around a base, and the rear swing rod pushes a backrest frame, a backrest frame swing rod, a seat frame and a seat frame swing rod to move synchronously; therefore, when the chair frame slides forwards, the backrest topples backwards, the hip guide part warps upwards, the chair frame is changed from a sitting posture state to a lying posture state, the function of back falling is achieved, meanwhile, the angle of the hip guide part and the back is changed, the problem that the angle of the L-shaped guide rail cannot be changed is solved, and better 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] As the pace of society accelerates, people's life pressure is getting greater and greater. A comfortable chair is now a necessity for people. Most of the existing home or office chairs are ordinary chairs. The angle between the backrest and the seat cannot be adjusted, which makes the user feel poor, and it is not possible to adjust a variety of comfortable angles according to the needs of the user. In addition, even if there are chairs with adjustable seat and backrest angles, they do not have the function of sliding forward and leaning against the wall, or require an additional push rod for linear drive. This will lead to a complex structure and greatly increase the cost of the chair frame. Summary of the invention

[0003] The present invention aims at the deficiencies of the prior art and proposes a forward-moving reclining chair frame and a massage chair, thereby solving the problems that the angle between the seat and the back of the existing chair frame cannot be adjusted, the reclining position cannot be achieved while leaning against the wall, the chair frame has high cost and is relatively complicated to assemble.

[0004] The present invention provides a forward-moving reclining chair frame, comprising a base, a backrest frame, a seat frame, a push rod, a backrest frame swing rod, a seat frame swing rod and a connecting rod; the base is provided with a first guide rail; the push rod comprises a guide rod and a slider, one end of the guide rod is hinged on the base, the slider is reciprocatingly slidably arranged on the guide rod, and the slider is hinged to the seat frame;

[0005] The backrest frame includes a buttocks guide portion and a backrest portion, wherein the backrest portion is arranged corresponding to the waist and back of the user; the seat frame is used for the user to sit on, and the seat frame is located above the buttocks guide portion;

[0006] The backrest is provided with a first roller, and the seat frame is provided with a second roller, and the first roller and the second roller reciprocate in the first guide rail;

[0007] The bottom ends of the backrest frame swing rod and the seat frame swing rod are both hinged on the base and arranged at intervals, and the backrest frame swing rod is arranged close to the backrest portion;

[0008] The first end of the backrest frame swing rod is hinged to the backrest portion at a first hinge point, and the first end of the seat frame swing rod is hinged to the rear end of the seat frame at a second hinge point; one end of the connecting rod is hinged to the second end of the seat frame swing rod, and the other end is hinged to the second end of the backrest frame swing rod;

[0009] The backrest frame swing rod, the backrest frame and the first guide rail constitute a first crank slider mechanism, and the seat frame swing rod, the seat frame and the first guide rail constitute a second crank slider mechanism, and the shape and motion trajectory of the first crank slider mechanism are different from those of the second crank slider mechanism;

[0010] The slider is driven to slide on the guide rod along the backrest toward the hip guide portion, driving the second roller on the seat frame and the first roller on the backrest to slide on the first guide rail along the backrest toward the hip guide portion, and at the same time pulling the first end of the seat frame swing rod and the first end of the backrest frame swing rod to swing from the backrest toward the hip guide portion, so that the angle between the seat frame and the backrest becomes larger when the chair frame moves forward and falls backward.

[0011] On the other hand, the present invention further provides a massage chair, comprising the above-mentioned reclining chair frame, wherein the backrest frame is provided with a guide rail, a reciprocating massage mechanism is provided on the guide rail, a massage swing arm is provided on the massage mechanism, and 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;

[0012] It also includes a control device, which controls the movement of the massage movement and the driving device.

[0013] By adopting the above-mentioned technical scheme, the present invention can achieve the following technical effects: compared with the prior art, the forward-moving reclining chair frame is superimposed by two sets of crank slider mechanisms driven by a set of four-linkages. The first set of crank slider mechanisms controls the forward sliding of the buttocks guide part, and the second set of crank sliders controls the forward sliding of the backrest. The two sets of crank sliders separately control the seat frame and the backrest, so that the seat frame and the backrest can move separately, thereby realizing the function of the chair frame sliding forward and reclining backward. At the same time, the seat frame position can also tilt backward, and the tilting angle of the backrest is greater than the tilting angle of the seat frame, so as to realize the process of different angle changes of the backrest and the seat frame, and a four-linkage mechanism is formed by a connecting rod connected in the middle of the two sets of crank sliders. In this way, a single push rod drives the two sets of crank slider mechanisms to be linked, which reduces costs while having a stable and reliable structure and simple installation, bringing a user-friendly massage experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0015] Figure 1A schematic structural diagram of a forward-moving reclining chair frame and a massage chair according to an embodiment of the present invention is depicted;

[0016] Figure 2 Draws Figure 1 A schematic diagram of a second structure of a forward-moving reclining chair frame and a massage chair;

[0017] Figure 3 Draws Figure 1 A third structural schematic diagram of a forward-moving reclining chair frame and a massage chair;

[0018] Figure 4 Draws Figure 3 A schematic diagram of an exploded structure of a forward-moving reclining chair frame and a massage chair;

[0019] Figures 5 to 7 Draws Figure 3 A schematic diagram of a forward-moving reclining chair frame and a crank slider and a four-link structure of a massage chair;

[0020] Figure 8 Draws Figure 1 A schematic diagram of the state change of a forward-moving reclining chair frame and a massage chair;

[0021] Fig. 9 Draws Figure 2 A schematic diagram of the state change of a forward-moving reclining chair frame and a massage chair;

[0022] Fig.10 Draws Figure 1 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-back frame, 3-seat frame, 4-push rod, 5-back frame swing rod, 6-seat frame swing rod, 7-connecting rod, 41-guide rod, 42-slider, 21-hip guide part, 22-backrest, 11-first guide rail, 221-first roller, 31-second roller, 12-second guide rail, a-first hinge point, b-second hinge point, 8-calf frame, 23-backrest support rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Combined with Figure 1-10As shown, a forward-moving reclining chair frame comprises a base 1, a backrest frame 2, a seat frame 3, a push rod 4, a backrest frame swing rod 5, a seat frame swing rod 6 and a connecting rod 7; the base 1 is provided with a first guide rail 11; the push rod 4 comprises a guide rod 41 and a slider 42, one end of the guide rod 41 is hinged on the base 1, the slider 42 is reciprocatingly slidably arranged on the guide rod 41, and the slider 42 is hinged to the seat frame 3;

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

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

[0029] The bottom ends of the backrest frame swing rod 5 and the seat frame swing rod 6 are both hinged on the base 1 and arranged at intervals, and the backrest frame swing rod 5 is arranged close to the backrest portion 22;

[0030] The first end of the backrest frame swing rod 5 is hinged to the backrest 22 at a first hinge point a, and the first end of the seat frame swing rod 6 is hinged to the rear end of the seat frame 3 at a second hinge point b; Figure 7 As shown, one end of the connecting rod 7 is hinged to the second end of the seat frame swing rod 6, and the other end is hinged to the second end of the backrest frame swing rod 5;

[0031] like Figure 5 As shown, the backrest frame rocker rod 5, the backrest frame 2 and the first guide rail 11 constitute a first crank slider mechanism. Figure 6 As shown, the seat frame rocker 6, the seat frame 3 and the first guide rail 11 form a second crank slider mechanism, and the shape and motion trajectory of the first crank slider mechanism are different from those of the second crank slider mechanism;

[0032] The slider 42 is driven to slide on the guide rod 41 along the backrest 22 toward the hip guide portion 21, driving the second roller 31 on the seat frame 3 and the first roller 221 of the backrest 22 to slide on the first guide rail 11 along the backrest 22 toward the hip guide portion 21, and at the same time pulling the first end of the seat frame swing rod 6 and the first end of the backrest frame swing rod 5 to swing from the backrest 22 toward the hip guide portion 21, so that when the chair frame moves forward and backs up, the angle between the seat frame 3 and the backrest 2 becomes larger.

[0033] That is to say, the forward-moving reclining chair frame provided in the embodiment of the present invention is superimposed by two sets of crank slider mechanisms driven by a set of four-bar connecting rods. The first set of crank slider mechanisms controls the forward sliding of the buttocks guide part, and the second set of crank sliders controls the forward sliding of the backrest. The two sets of crank sliders separately control the seat frame and the backrest, so that the seat frame and the backrest can move separately, thereby realizing the function of the chair frame sliding forward and reclining backward. At the same time, the seat frame position can also tilt backward, and the tilting angle of the backrest is greater than the tilting angle of the seat frame, so as to realize the process of different angle changes of the backrest and the seat frame, and a four-bar connecting rod is formed by a connecting rod connected in the middle of the two sets of crank sliders. In this way, a single push rod drives the two sets of crank slider mechanisms to be linked, which reduces costs while having a stable and reliable structure and simple installation, bringing a user-friendly massage experience.

[0034] Furthermore, in one example, the length of the backrest frame rocker 5 is greater than the length of the seat frame rocker 6 , so that the moving distance of the first roller 221 in the first guide rail 11 is greater than the moving distance of the second roller 31 in the first guide rail 11 .

[0035] The effect of such a design is to make the angle of the seat frame raised smaller than the angle of the backrest frame falling back, thereby increasing the angle between the seat frame and the backrest. As a result, the user's body is closer to lying flat after the chair frame falls back, and the lying posture is more comfortable, which improves the comfort of massage. Of course, if the length of the backrest frame swing rod is equal to the length of the seat frame swing rod, it is also possible to achieve falling back and increasing the angle between the seat frame and the backrest, but the increased angle is smaller, and the degree of lying flat is smaller, but it does not affect the implementation of this solution, and the embodiment of the present invention will not be described in detail.

[0036] In addition, in the embodiment of the present invention, the seat frame can be above the buttocks guide portion of the backrest frame in any state, so that when the seat frame is used as a massage chair, it can provide movement space for the massage movement on the massage chair, and the massage movement can move to the bottom of the seat frame to massage the user's thighs and buttocks. While improving comfort, the zero-gravity and zero-wall function is achieved.

[0037] The first roller and the second roller both slide in the first guide rail, and the collision between the first roller and the second roller can be avoided by controlling the extension and retraction of the push rod.

[0038] Of course, since the first roller 221 and the second roller 31 are arranged in a guide rail, the sliding distance is limited, so that the angle change between the seat frame and the backrest is limited, such as Figure 8The figure shows a schematic diagram of the state change of a guide rail, based on which the present invention also provides an embodiment, specifically, a second guide rail 12 is also provided on the base 1, and the first guide rail 11 and the second guide rail 12 are arranged in parallel. The length of the first guide rail 11 is greater than the length of the second guide rail 12. Among them, the first roller 221 slides back and forth in the first guide rail 11, and the second roller 31 slides back and forth in the second guide rail 12. In this way, the sliding distances of the first roller 221 and the second roller 31 in their respective corresponding guide rails can be increased, thereby increasing the change angle of the seat frame 3 and the backrest frame 2, and then increasing the change angle between the seat frame 3 and the backrest frame 2, thereby improving the comfort of the user.

[0039] Specifically, there are two ways to horizontally arrange the first guide rail 11 and the second guide rail 12. The first way is as follows: Figure 2 As shown: the width of the first guide rail 11 is narrower than the width of the second guide rail 12; the first roller 221 slides back and forth in the first guide rail 11, and the second roller 31 slides back and forth in the second guide rail 12;

[0040] The slider 42 is driven to slide on the guide rod 41 along the backrest 22 toward the buttocks guide portion 21, driving the second roller 31 on the seat frame 3 in the second guide rail 12, and driving the first roller 221 of the backrest 22 to slide on the first guide rail 11 along the backrest 22 toward the buttocks guide portion 21;

[0041] When the chair frame changes from a sitting position to a lying position, the position of the first roller 221 in the first guide rail 11 is closer to the front end of the seat frame 3 than the position of the second roller 31 in the second guide rail 12. Fig. 9 shown.

[0042] The second type, such as Figure 3 As shown: the horizontal height of the first guide rail 11 is lower than the horizontal height of the second guide rail 12; the first roller 221 slides back and forth in the first guide rail 11, and the second roller 31 slides back and forth in the second guide rail 12;

[0043] The slider 42 is driven to slide on the guide rod 41 along the backrest 22 toward the buttocks guide portion 21, driving the second roller 31 on the seat frame 3 in the second guide rail 12, and driving the first roller 221 of the backrest 22 to slide on the first guide rail 11 along the backrest 22 toward the buttocks guide portion 21;

[0044] When the chair frame changes from a sitting position to a lying position, the position of the first roller 221 in the first guide rail 11 is closer to the front end of the seat frame 3 than the position of the second roller 31 in the second guide rail 12 .

[0045] Specifically, when the first roller 221 is installed, the length of the pin shaft is greater than the length of the pin shaft when the second roller 31 is installed. This can adapt to the situation where the width of the backrest frame 2 is narrower than the width of the seat frame 3, and when the first guide rail 11 and the second guide rail 12 are arranged up and down in the same plane, the sliding movement of the first roller 221 and the second roller 31 in the first guide rail 11 and the second guide rail 12 respectively is not affected.

[0046] In the above two double rail solutions, the horizontal arrangement of the first rail and the second rail requires the width of the chair frame to be slightly larger, but the overall height of the chair frame can be slightly lower. When the first rail and the second rail are arranged in a high and low position, the width of the chair frame can be narrower, and the overall height of the chair frame will be slightly higher. Usually the second method is the best.

[0047] Furthermore, in one example, a calf frame 8 and a calf push rod (not shown in the figure) are further included, 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 raised or lowered. In this way, when the chair frame is lying flat, the muscles of the legs and abdomen can be stretched by controlling the calf frame to be repeatedly raised and lowered, thereby achieving a massage effect.

[0048] Taking double guide rails as an example, the installation structure and working principle of the chair frame described in the embodiment of the present invention are described in detail in combination with the accompanying drawings.

[0049] like Figure 3-7 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 4, a backrest frame swing rod 5, a seat frame swing rod 6, a connecting rod 7, and a calf. The base is provided with two hinge points and two sets of slide rails. The backrest frame 2 slides in one of the sets of guide rails, and the backrest frame swing rod 5 is respectively hinged to the first hinge point a of the backrest 22 and the base 1, as shown in FIG. Figure 5 As shown, the backrest frame swing rod 5, the backrest frame 2 and the first guide rail 11 form a first crank slider mechanism. The seat frame swing rod 6 is respectively hinged to the second hinge point b at the rear end of the seat frame 3 and the base 1, as shown in FIG. Figure 6 As shown, the seat frame rocker 6, the seat frame 3 and the second guide rail 12 form a second crank slider mechanism. Figure 7As shown, one end of the connecting rod 7 is hinged to the second end of the seat frame swing rod 6, and the other end is hinged to the second end of the backrest frame swing rod 5, forming a set of four-bar linkage, so that the two sets of crank slider mechanisms form a linkage mechanism, but the shape and motion trajectory of the first crank slider mechanism are different from those of the second crank slider mechanism. In this way, no matter which set of mechanisms is driven, the entire mechanism can be moved. The first set of crank slider mechanisms can make the backrest frame 2 realize the motion curve of sliding forward and then backing up, and the seat frame 3 is the second set of crank slider mechanisms to achieve similar forward sliding and rotation movements. In this way, there are two sets of forward sliding rotations with different angles, forming a variable angle mechanism.

[0050] The calf part can be driven independently or in a linkage manner when the backrest is reversed. This is a conventional technical structure in the art and will not be described in detail in the embodiments of the present invention.

[0051] like Fig.10 As shown, this is the process of the chair frame movement, the backrest slides forward and reclines at the same time, and the seat frame tilts upward in the final stage.

[0052] Furthermore, the present embodiment also provides a massage chair, comprising the above-mentioned reclining chair frame, 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;

[0053] It also includes a control device, which controls the movement of the massage movement and the driving device.

[0054] That is to say, the forward-moving reclining chair frame and massage chair provided by the embodiment of the present invention, the forward-moving reclining chair frame provided by the embodiment of the present invention drives two sets of crank slider mechanisms to form a superposition through a set of four-linkages, the first set of crank slider mechanisms controls the forward sliding of the buttocks guide part, and the second set of crank sliders controls the forward sliding of the backrest, and the two sets of crank sliders separately control the seat frame and the backrest, so that the seat frame and the backrest can move separately, thereby realizing the function of the chair frame sliding forward and reclining backward, and at the same time, the seat frame position can also tilt backward, and the tilting angle of the backrest is greater than the tilting angle of the seat frame, so as to realize the process of different angle changes of the backrest and the seat frame, and a four-linkage mechanism is formed by a connecting rod connected in the middle of the two sets of crank sliders, so that a single push rod drives the two sets of crank slider mechanisms to be linked, which reduces costs while having a stable and reliable structure and simple installation, bringing a user-friendly massage experience.

[0055] Although the preferred embodiments of the present application have been described, those skilled in the art may make other 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 falling within the scope of the present application.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A forward-moving reclining chair frame, characterized in that: It includes a base, a backrest frame, a seat frame, a push rod, a backrest frame swing rod, a seat frame swing rod and a connecting rod; the base is provided with a first guide rail; the push rod includes a guide rod and a slider, one end of the guide rod is hinged on the base, the slider is reciprocatingly slidably arranged on the guide rod, and the slider is hinged to the seat frame; The backrest frame includes a buttocks guide portion and a backrest portion, wherein the backrest portion is arranged corresponding to the waist and back of the user; the seat frame is used for the user to sit on, and the seat frame is located above the buttocks guide portion; The backrest is provided with a first roller, and the seat frame is provided with a second roller, and the first roller and the second roller reciprocate in the first guide rail; The bottom ends of the backrest frame swing rod and the seat frame swing rod are both hinged on the base and arranged at intervals, and the backrest frame swing rod is arranged close to the backrest portion; The first end of the backrest frame swing rod is hinged to the backrest portion at a first hinge point, and the first end of the seat frame swing rod is hinged to the rear end of the seat frame at a second hinge point; one end of the connecting rod is hinged to the second end of the seat frame swing rod, and the other end is hinged to the second end of the backrest frame swing rod; The backrest frame swing rod, the backrest frame and the first guide rail constitute a first crank slider mechanism, and the seat frame swing rod, the seat frame and the first guide rail constitute a second crank slider mechanism, and the shape and motion trajectory of the first crank slider mechanism are different from those of the second crank slider mechanism; The slider is driven to slide on the guide rod along the backrest toward the hip guide portion, driving the second roller on the seat frame and the first roller on the backrest to slide on the first guide rail along the backrest toward the hip guide portion, and at the same time pulling the first end of the seat frame swing rod and the first end of the backrest frame swing rod to swing from the backrest toward the hip guide portion, so that the angle between the seat frame and the backrest becomes larger when the chair frame moves forward and falls backward.

2. The forward-moving reclining chair frame according to claim 1, characterized in that: The length of the backrest frame swing rod is greater than the length of the seat frame swing rod, so that the moving distance of the first roller in the first guide rail is greater than the moving distance of the second roller in the first guide rail.

3. The forward-moving reclining chair frame according to claim 1, characterized in that: A second guide rail is also arranged on the base, and the first guide rail and the second guide rail are arranged in parallel.

4. The forward-moving reclining chair frame according to claim 3, characterized in that: The first guide rail length is greater than the second guide rail length.

5. The forward-moving reclining chair frame according to claim 3, characterized in that: The horizontal height of the first guide rail is lower than the horizontal height of the second guide rail; the first roller slides back and forth in the first guide rail, and the second roller slides back and forth in the second guide rail; The slider is driven to slide on the guide rod along the backrest portion toward the buttocks guide portion, driving the second roller on the seat frame in the second guide rail, and driving the first roller on the backrest portion to slide on the first guide rail along the backrest portion toward the buttocks guide portion; When the chair frame changes from a sitting position to a lying position, the position of the first roller in the first guide rail is closer to the front end of the seat frame than the position of the second roller in the second guide rail.

6. The forward-moving reclining chair frame according to claim 3, characterized in that: The width of the first guide rail is narrower than that of the second guide rail; the first roller slides back and forth in the first guide rail, and the second roller slides back and forth in the second guide rail; The slider is driven to slide on the guide rod along the backrest portion toward the buttocks guide portion, driving the second roller on the seat frame in the second guide rail, and driving the first roller on the backrest portion to slide on the first guide rail along the backrest portion toward the buttocks guide portion; When the chair frame changes from a sitting position to a lying position, the position of the first roller in the first guide rail is closer to the front end of the seat frame than the position of the second roller in the second guide rail.

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. The forward-moving reclining chair frame according to claim 1, characterized in that: The backrest frame also includes a backrest support rod, one end of which is fixed to the backrest portion, and the first roller is arranged at the bottom end of the backrest support rod.

10. A massage chair, characterized in that: The forward-moving reclining chair frame comprises the forward-moving reclining chair frame as claimed in claims 1 to 9, 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 also comprises a control device, wherein the control device controls the movement of the massage mechanism and the push rod.

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