Chair frame and massage chair
By designing a chair frame structure including a crank slider mechanism, the problems of complex structure, high cost and poor user experience in the prior art are solved, and flexible changes in the chair frame angle and cost reduction are achieved.
Patent Information
- Application Number
- CN202421294252.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The existing chair frame with zero-back wall and adjustable angle has complex structure, high cost and poor user experience.
A chair frame structure including a base, a back frame, a seat frame, a push rod and a back frame swing rod is designed. The angle change between the back frame and the seat frame is realized through the crank slide mechanism, reducing the number of push rods and reducing the cost.
The chair frame is transformed from a seating position to a lying down state, and at the same time, it increases the angle between the back frame and the seat frame, reducing costs and improving user experience.
Smart Images
Figure CN222898632U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of massage, and specifically, to a chair frame and a massage chair. Background Art
[0002] With the accelerating pace of society, people's life pressure is also increasing, and a comfortable chair is a necessity for people now. Most of the existing household or office chairs are ordinary seats, and the angle between the backrest and the seat part is not adjustable, resulting in a poor sitting feeling for users. In addition, in the current market solutions that achieve variable angles and zero-wall contact at the same time, basically all are realized by driving with 2 push rods. The cost is relatively high and the structure is complex. Summary of the Invention
[0003] The utility model provides a chair frame and a massage chair aiming at the deficiencies of the prior art, thereby solving the problems of complex structure, high cost and poor user experience of the existing chair frame with zero-wall contact and adjustable angle.
[0004] On the one hand, the utility model provides a chair frame, which includes a base, a backrest frame, a seat frame, a push rod and a backrest swing rod; the push rod includes a guide rod and a slider, the slider is slidably arranged on the guide rod, one end of the guide rod is hinged to the base, and the slider is hinged to the rear end of the seat frame; the backrest frame is hinged to the seat frame, the backrest frame includes a seat part and a backrest part, and the backrest part is arranged corresponding to the waist and back of the user; the seat frame is for the user to sit on, and the seat frame is located above the seat part;
[0005] A first guide rail and a second guide rail are arranged on the base, and the height of the second guide rail is higher than that of the first guide rail; a first roller and a second roller are arranged on the seat frame, the first roller can reciprocally roll in the first guide rail, and the second roller can reciprocally roll in the second guide rail;
[0006] One end of the backrest swing rod is hinged to the base at a first hinge point, and the other end is hinged to the backrest frame;
[0007] The slider slides on the guide rod along the backrest frame towards the seat frame, driving the seat frame to slide on the first guide rail and the second guide rail along the backrest frame towards the seat frame, thereby driving the backrest swing rod to swing along the backrest frame towards the seat frame with the first hinge point as the rotation center, so that the chair frame changes from a sitting posture state to a lying state, and at the same time, the angle between the backrest frame and the seat frame becomes larger.
[0008] On the other hand, as an executable solution, the present utility model further provides a massage chair, which includes the above-mentioned chair frame. A guide rail is provided on the back frame, and 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 extend in a direction away from the massage mechanism. When the massage mechanism moves to the seat part, the massage swing arm can extend to a position close to or higher than the seat frame to massage the user.
[0009] It further includes a control device, and the control device controls the movement of the massage mechanism, the push rod, and the calf push rod.
[0010] By adopting the above technical solution, the present utility model can achieve the following technical effects: Compared with the prior art, the chair frame includes a base, a back frame, a seat frame, a push rod, and a back frame swing rod; the push rod includes a guide rod and a slider, the slider is slidably arranged on the guide rod, one end of the guide rod is hinged to the base, and the slider is hinged to the rear end of the seat frame; the back frame is hinged to the seat frame, the back frame includes a seat part and a backrest part, and the backrest part 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 seat part; a first guide rail and a second guide rail are provided on the base, and the height of the second guide rail is higher than that of the first guide rail; a first roller and a second roller are provided on the seat frame, the first roller can reciprocally roll in the first guide rail, and the second roller can reciprocally roll in the second guide rail; one end of the back frame swing rod is hinged to the base at a first hinge point, and the other end is hinged to the back frame. That is, the crank is the back frame swing rod, the slider is the seat frame and the back frame, and the base is the guide rail, thus forming a crank-slider mechanism. The crank-slider drives the back frame to slide forward, and through a crank-rocker mechanism, a linkage chair frame structure with an angle change between the back frame and the seat frame is realized. One push rod can be reduced, and the functions of zero-wall contact and angle change can be achieved, thereby reducing the cost of the chair frame. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0012] Figure 1 Illustrates a structural schematic diagram of an embodiment of the present utility model;
[0013] Figure 2 Illustrates Figure 1 a structural schematic diagram of the state change of a chair frame in
[0014] Figure 3 shows the Figure 1 exploded structural schematic diagram of a chair frame in
[0015] Figure 4 shows the Figure 1 schematic diagram of the motion of the crank-slider mechanism of a chair frame in
[0016] Accompanying drawings
[0017] Base, 2 - backrest frame, 3 - seat frame, 4 - push rod, 5 - backrest swing rod, 41 - guide rod, 42 - slider, 22 - seat part, 21 - backrest part, 11 - first guide rail, 12 - second guide rail, 31 - first roller, 32 - second roller, a - first hinge point, 6 - calf push rod, 7 - calf connecting rod, b - first end, c - second end, d - third end, 71 - third roller, 13 - guide rod ear seat, 31 - slider ear seat, 33 - rotating shaft. Detailed implementation manners
[0018] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.
[0019] Combined with the attached Figures 1-4 As shown, an embodiment of the present utility model provides a chair frame, including a base 1, a backrest frame 2, a seat frame 3, a push rod 4 and a backrest swing rod 5; the push rod 4 includes a guide rod 41 and a slider 42, the slider 42 is slidably arranged on the guide rod 41, one end of the guide rod 41 is hinged to the base 1, and the slider 42 is hinged to the rear end of the seat frame 3; the width of the backrest frame 2 is narrower than the width of the seat frame 3, the backrest frame 2 is hinged to the seat frame 3, the backrest frame 2 includes a seat part 22 and a backrest part 21, and the backrest part 21 is arranged corresponding to the waist and back of the user; the seat frame 3 is for the user to sit on, and the seat frame 3 is located above the seat part 22;
[0020] The base 1 is provided with a first guide rail 11 and a second guide rail 12, and the height of the second guide rail 12 is higher than the height of the first guide rail 11; the seat frame 3 is provided with a first roller 31 and a second roller 32, the first roller 31 can reciprocally roll in the first guide rail 11, and the second roller 32 can reciprocally roll in the second guide rail 12;
[0021] One end of the backrest swing rod 5 is hinged to the base 1 at a first hinge point a, and the other end is hinged to the backrest frame 2;
[0022] The slider 42 slides along the guide rod 41 towards the seat frame 4 along the backrest frame 2, driving the seat frame 4 to slide along the backrest frame 2 towards the seat frame 3 on the first guide rail 11 and the second guide rail 12, thereby driving the backrest swing rod 5 to swing towards the seat frame 3 along the backrest frame 2 with the first hinge point a as the rotation center, so that the chair frame is transformed from the sitting state to the lying state. At the same time, the angle between the backrest frame 2 and the seat frame 3 becomes larger.
[0023] In the present utility model, the crank is the backrest swing rod, the slider is the seat frame and the backrest frame, and the base is the guide rail. In this way, a crank-slider mechanism is formed. The crank-slider drives the backrest to slide forward, and a linkage chair frame structure that realizes the angle change between the backrest and the seat frame through a crank-rocker mechanism is achieved. One push rod can be reduced, and the function of zero-wall contact and angle change can be realized, thus reducing the cost of the chair frame. As Figure 4 shown, it is a motion schematic diagram of the crank-slider mechanism.
[0024] Further, in an example, as Figures 1-3 shown, the first guide rail 11 is inclined from high to low along the direction from the backrest frame 2 to the seat frame 3 on the base 1, the second guide rail 12 is inclined from low to high along the direction from the backrest frame 2 to the seat frame 3 on the base 1, and the low end of the second guide rail 12 is arranged above the low end of the first guide rail 11.
[0025] This chair frame is a single-drive structure, and the seat frame makes a reciprocating motion on the base guide rail; the key point is that the seat frame realizes the action of sliding forward and tilting upward in the double guide rails of the base. While the backrest is driven to slide forward, a process of angle change is achieved. The backrest is hinged to the seat frame, and a backrest swing rod is arranged between the base and the backrest. In this way, when the push rod drives the seat frame, the backrest is simultaneously driven to perform an angle-changing action. The structure is relatively simple, and it is relatively easy to control the quality of the chair frame.
[0026] Further, in an example, as Figures 1-3 shown, the backrest swing rod 5 is a bent rod. The bending angle of the swing rod faces the side of the push rod, which can increase the supporting force after the backrest is reclined, making the chair frame more stable after reclining.
[0027] Further, in an example, as Figure 2 shown, the first hinge point a between the backrest swing rod 5 and the base 1 is located below the first guide rail 11 and close to the high-end side of the first guide rail 11. This can make the chair frame more stable after reclining.
[0028] Further, in an example, as Figure 3As shown, it further includes a calf component (not shown in the conventional component diagram), a calf push rod 6 and a calf connecting rod 7. One end of the calf push rod 6 is hinged to the bottom of the seat frame 3, and the other end is hinged to the first end b of the calf connecting rod 7. The second end c of the calf connecting rod 7 is hinged to the front end of the seat frame 3. A third roller 71 is provided at the third end d of the calf connecting rod 7, and the third roller 71 abuts against the calf component; the calf component is hinged to the front end of the seat frame 3; the calf push rod 6 drives the calf component to lift or lower.
[0029] The following details a chair frame provided by the present utility model through a specific embodiment, as Figures 1-3 shown.
[0030] The chair frame includes a base 1, a backrest frame 2, a seat frame 3, a push rod 4, a backrest swing rod 5, a calf component, a calf push rod 6 and a calf connecting rod 7; the push rod 4 includes a guide rod 41 and a slider 42. The slider 42 is slidably arranged on the guide rod 41. A guide rod ear seat 13 is provided on the base 1. One end of the guide rod 41 is hinged to the guide rod ear seat 13. A slider ear seat 31 is provided at the rear end of the seat frame 3. The slider 42 is hinged to the slider ear seat 31. The width of the backrest frame 2 is narrower than that of the seat frame 3. The backrest frame 2 and the seat frame 3 are hinged by a rotating shaft 33. The backrest frame 2 includes a seat part 22 and a backrest part 21. The seat part 22 can move within the space inside the seat frame 3. The backrest 33 is arranged corresponding to the user's lumbar and dorsal regions; the seat frame 3 is for the user to sit on, and the seat frame 3 is located above the seat part 22; a first guide rail 11 is inclined from high to low in the direction from the backrest frame 2 to the seat frame 3 on the base 1. A second guide rail 12 is inclined from low to high in the direction from the backrest frame 2 to the seat frame 3 on the base 1. The lower end of the second guide rail 12 is arranged above the lower end of the first guide rail 11. A first roller 31 and a second roller 32 are provided on the seat frame 3. The first roller 31 reciprocally rolls in the first guide rail 11, and the second roller 32 reciprocally rolls in the second guide rail 12; one end of the backrest swing rod 5 is hinged to the base 1 at a first hinge point a, and the other end is hinged to the backrest frame 2; the first hinge point a is located below the first guide rail 11 and close to the high-end side position of the first guide rail 11. The backrest swing rod 5 is a bent rod, which can better provide the support force after the chair frame is reclined, making the chair frame structure more stable. One end of the calf push rod 6 is hinged to the bottom of the seat frame 3, and the other end is hinged to the first end b of the calf connecting rod 7. The second end c of the calf connecting rod 7 is hinged to the front end of the seat frame 3. A third roller 71 is provided at the third end d of the calf connecting rod 7, and the third roller 71 abuts against the calf component; the calf component is hinged to the front end of the seat frame 3; the calf push rod 6 drives the calf component to lift or lower.
[0031] The working principle is as follows, as Figure 2As shown in the figure, when the slider 42 slides along the guiding rod 41 towards the seat frame 4 along the backrest frame 2, it can drive the seat frame 4 to slide along the first guide rail 11 and the second guide rail 12 towards the seat frame 4 along the backrest frame 2, thereby driving the backrest swing rod 5 to swing towards the seat frame 3 along the backrest frame 2 with the first hinge point a as the rotation center, so that the chair frame is transformed from the sitting state to the lying state. At the same time, the angle between the backrest frame 2 and the seat frame 3 becomes larger.
[0032] When the slider 42 slides along the seat frame 3 towards the backrest frame 2 along the guiding rod 41, it can drive the seat frame 3 to slide along the first guide rail 11 and the second guide rail 12 towards the backrest frame 2 along the seat frame 3, thereby driving the backrest swing rod 5 to swing towards the backrest frame 2 along the seat frame 3 with the first hinge point a as the rotation center, so that the chair frame is transformed from the lying state to the sitting state. At the same time, the angle between the backrest frame 2 and the seat frame 3 becomes smaller.
[0033] In this way, the transformation between the sitting state and the lying state of the chair frame is realized. During the transformation process, the calf push rod can drive the calf assembly to lift or lower to perform stretching and massaging movements of the calf and the torso.
[0034] In another example, the embodiment of the present utility model further provides a massage chair, including the above-mentioned chair frame. A guide rail is provided on the backrest frame, and 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 extend towards a direction away from the massage mechanism. When the massage mechanism moves to the seat part, the massage swing arm can extend to a position close to or higher than the seat frame to massage the user;
[0035] It further includes a control device, and the control device controls the movement of the massage mechanism, the push rod and the calf push rod.
[0036] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.
[0037] 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 equivalent technologies, the present application also intends to include these modifications and variations.
Claims
1. A chair frame, characterized in that: The utility model comprises a base, a back frame, a seat frame, a push rod and a back frame swing rod; the push rod comprises a guide rod and a slider, the slider is slidably arranged on the guide rod, one end of the guide rod is hinged to the base, and the slider is hinged to the rear end of the seat frame; the back frame is hinged to the seat frame, the back frame comprises a seat part and a backrest part, the backrest part is arranged corresponding to the waist and back of the user; the seat frame is used for the user to sit, and the seat frame is located above the seat part; The base is provided with a first guide rail and a second guide rail, and the height of the second guide rail is higher than that of the first guide rail; the seat frame is provided with a first roller and a second roller, and the first roller can roll back and forth in the first guide rail, and the second roller can roll back and forth in the second guide rail; One end of the back frame swing rod is hinged to the base at a first hinge point, and the other end is hinged to the back frame; The slider slides on the guide rod along the back frame toward the seat frame, driving the seat frame to slide on the first guide rail and the second guide rail along the movement direction of the slider, thereby driving the back frame swing rod to swing along the back frame toward the seat frame with the first hinge point as the rotation center, so that the chair frame changes from a sitting state to a lying state, and at the same time, the angle between the back frame and the seat frame becomes larger.
2. The chair frame according to claim 1, characterized in that: The first guide rail is arranged on the base along the direction from the back frame to the seat frame, and is tilted from high to low. The second guide rail is arranged on the base along the direction from the back frame to the seat frame, and is tilted from low to high. The lower end of the second guide rail is arranged above the lower end of the first guide rail.
3. The chair frame according to claim 1, characterized in that: The back frame swing rod is a bent rod.
4. The chair frame according to claim 1, characterized in that: The first hinge point between the back frame swing arm and the base is located below the first guide rail and close to the high end side of the first guide rail.
5. The chair frame according to claim 1, characterized in that: It also includes a calf assembly, a calf push rod and a calf connecting rod, one end of the calf push rod is hinged to the bottom of the seat frame, the other end is hinged to the first end of the calf connecting rod, the second end of the calf connecting rod is hinged to the front end of the seat frame, the third end of the calf connecting rod is provided with a third roller, and the third roller abuts against the calf assembly; the calf assembly is hinged to the front end of the seat frame; the calf push rod drives the calf assembly to be lifted or lowered.
6. The chair frame according to claim 1, characterized in that: The width of the back frame is narrower than the width of the seat frame.
7. A massage chair, characterized in that: A chair frame comprising any one of claims 1 to 6, wherein a guide rail is arranged on the back frame, a reciprocating massage mechanism is arranged on the guide rail, a massage swing arm is arranged 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 seat, 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, which controls the movement of the massage mechanism, the push rod and the calf push rod.