Anti-lever lying chair frame with zero road occupation function

Abstract

The utility model relates to the technical field of massage chairs, in particular to an anti-lever lying chair frame with a zero-occupying function, which comprises a fixing frame, a seat frame, a backrest frame and a driving piece, the driving piece drives the seat frame to slide back and forth on the fixing frame, a first end of the backrest frame is rotatably arranged on one side of the seat frame, and a second end of the backrest frame is rotatably arranged on the other side of the seat frame. A transmission structure enabling the second end of the backrest frame to lie down or stand up when the seat frame slides back and forth is arranged between the fixing frame and the seat frame, the transmission structure comprises a transmission piece and a transmission rod, and the connecting end of the backrest frame and the seat frame is located above the horizontal plane of the position where the seat frame is located. The transmission part is located below the horizontal plane of the position where the seat frame is located and rotationally connected with one end of the transmission rod, the other end of the transmission rod is rotationally connected with the fixing frame, and when the seat frame slides back and forth, the first end of the backrest frame is transmitted through the transmission structure, and the second end of the backrest frame lies down or stands up. The utility model has the beneficial effects that the sliding of the seat frame and the lying of the leaning frame can be realized through the single driving piece, the structure is simple, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of massage chairs, and particularly relates to an anti-lever reclining chair frame with a zero-occupancy function. Background Art

[0002] For the existing foot bath massage chairs on the market, the reclining of the backrest frame and the forward and backward movement of the seat frame are driven by respective electric push rods. With the existing structural method, two electric cylinders are required for separate control, resulting in a relatively high cost and a relatively large internal space requirement.

[0003] The existing invention with the application number 202311407740.2 discloses a massage chair frame and a massage chair. The chair frame includes a bottom frame, a seat frame, a backrest frame, and a first driving mechanism. There is a hinge point on the seat frame. The backrest frame includes a backrest part and a protruding part provided at the bottom of the backrest part. The end of the protruding part is hinged to the hinge point of the seat frame. One end of the first driving mechanism is hinged to the seat frame, and the other end telescopically pushes the backrest frame to drive the backrest frame to flip relative to the seat frame. The first driving mechanism is located below the hinge point and the backrest part, so that the backrest frame can rotate around the hinge point to an angle lower than the horizontal plane where the hinge point is located. The bottom frame is provided with a guide rail structure extending in the front-back direction, and the seat frame is correspondingly provided with a roller set, and the roller set is slidably matched with the guide rail structure. A second driving mechanism is provided on the bottom frame, and the second driving mechanism is connected to the seat frame to drive the seat frame to reciprocate on the guide rail structure. The present invention can make the backrest frame be placed backward to a negative angle state, thus facilitating the stretching action of the human body.

[0004] However, although this patent realizes the flipping of the backrest frame, its driving structure is relatively complex, so the installation space required for the driving structure in the massage chair frame is also relatively large. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a chair frame that can realize the sliding of the seat frame and the reclining and standing of the backrest frame through a single driving member, with a simple structure and small occupied space, aiming at the deficiencies of the above-mentioned existing technologies.

[0006] To achieve the above object, the following technical solution is adopted. An anti-lever reclining chair frame with a zero-occupancy function includes a fixed frame, a seat frame, a backrest frame, and a driving member. The driving member drives the seat frame to slide back and forth on the fixed frame. The first end of the backrest frame is rotatably arranged on one side of the seat frame. A transmission structure is arranged between the fixed frame and the seat frame to make the second end of the backrest frame recline or stand up when the seat frame slides back and forth. The transmission structure includes a transmission member and a transmission rod. The connection end of the backrest frame and the seat frame is located above the horizontal plane of the position where the seat frame is located. The transmission member is located below the horizontal plane of the position where the seat frame is located. One end of the transmission rod is rotatably connected to the transmission member, and the other end is rotatably connected to the fixed frame. When the seat frame slides back and forth, the first end of the backrest frame is driven through the transmission structure to make the second end of the backrest frame recline or stand up.

[0007] With the above technical solution, the driving member can be an electric cylinder or an electric push rod. When the driving member makes the seat frame slide forward, that is, slide away from the backrest frame, since both ends of the transmission rod are rotatably connected to the fixed frame and the transmission member respectively, and the rotation connection point between the transmission rod and the fixed frame does not slide back and forth, the other end of the transmission rod rotates with this point as the rotation axis, thereby driving the transmission member to move up and down. The transmission member can be fixedly arranged with the backrest frame or integrally arranged. Since the connection end between the backrest frame and the seat frame is above the horizontal plane of the position where the seat frame is located, and the transmission member is below the horizontal plane of the position where the seat frame is located and is rotatably connected to one end of the transmission rod, the two connection points are arranged at different heights. By arranging the rotation connection point between the backrest frame and the seat frame, the rotation connection point between the transmission member and the transmission rod, and the rotation connection point between the fixed frame and the transmission rod in sequence from high to low to form a three-point hinge, when the driving member pushes the seat frame to slide, an anti-lever is formed through the transmission structure. When the driving member pushes forward, the distance between the transmission rod and the backrest frame shortens, the included angle between the transmission rod and the transmission member becomes smaller, and the transmission member drives the first end of the backrest frame to fall, so the second end of the backrest frame rises. At this time, the transmission member can drive the backrest frame to rotate and rise counterclockwise along the rotation connection point with the seat frame, that is, the anti-lever principle. At this time, the entire chair frame forms a sitting posture state. Similarly, when the driving member moves backward and makes the seat frame slide backward, that is, slide toward one end of the backrest frame, the transmission rod rotates and rises with the rotation point of the fixed frame as the rotation axis, so the transmission member also rises accordingly. Since the distance between the transmission rod and the backrest frame becomes longer, the included angle between the transmission rod and the transmission member becomes larger, and the transmission member drives the first end of the backrest frame to rise, so the second end of the backrest frame rotates and falls along the rotation connection point with the seat frame, and the transmission member drives the backrest frame to rotate and fall clockwise. Since only one driving member is needed to realize the forward and backward movement of the seat frame and the reclining and upright of the backrest frame, at this time, the entire chair frame forms a lying posture state. Since only one driving member is needed to realize the rotation and up-and-down movement of the backrest frame through the anti-lever, the installation space inside the massage chair is saved. At the same time, the up-and-down movement of the backrest frame does not need to occupy the space of the aisle, so as to adapt to public places such as airports and railway stations where there is no high wall at the back and a relatively wide walking aisle needs to be maintained in the front position, realizing the "zero occupation of the aisle" function.

[0008] An anti-lever reclining chair frame with a zero-occupation function can be further set as: a hook is provided at the top of the transmission member, and a positioning pin is inserted through one end of the transmission rod connecting the transmission member, and both ends of the positioning pin are hooked and limited in the hook.

[0009] With the above technical solution, after the positioning pin passes through the transmission rod, its two ends are hooked and limited within the hook. A limiting plate can be provided at the hook to reduce the area of the opening of the hook, thereby clamping the two ends of the positioning pin and preventing the positioning pin from disengaging from the hook. A plug pin can be inserted into the part of the positioning pin located within the transmission rod. The plug pin is used to prevent the positioning pin from disengaging from the transmission rod, and at the same time, it does not affect the rotation of the transmission rod and can also give the transmission rod a certain amount of movement space.

[0010] An anti-lever lying chair frame with a zero-occupancy function can be further configured as follows: The driving member is an electric cylinder. The first end of the driving member is rotatably arranged on the fixed frame, and the second end of the driving member is provided with a telescopic push rod. One end of the push rod is telescopically arranged within the driving member, and the other end is rotatably connected to the seat frame.

[0011] With the above technical solution, the push rod on the electric cylinder controls the forward and backward movement of the seat frame by extending or shortening, and controls the opening angle of the backrest frame by the extended or shortened distance. When the push rod extends longer, the transmission rod gets closer to the transmission member, and the distance between the transmission rod and the backrest frame becomes smaller. Therefore, the connecting end of the transmission rod and the transmission member continuously drops due to bending. At this time, the backrest frame also rises along the seat frame, and the backrest frame is in a sitting position, thus enabling the human body to rest in a sitting position. When the push rod shortens, the transmission rod moves farther away from the transmission member, and the distance between the transmission rod and the backrest frame becomes larger. Therefore, the connecting end of the transmission rod and the transmission member changes from a small-angle bend to a large-angle bend and continuously rises. At this time, the backrest frame also drops along the seat frame, and the backrest frame is in a lying position, thus enabling the human body to rest in a lying position.

[0012] An anti-lever lying chair frame with a zero-occupancy function can be further configured as follows: A first ear seat is provided at the bottom of the seat frame. The push rod is rotatably connected within the first ear seat. A second ear seat and a third ear seat are provided at the top of the fixed frame. The first end of the driving member is rotatably arranged within the second ear seat, and one end of the transmission rod is rotatably arranged within the third ear seat.

[0013] With the above technical solution, the push rod is not directly connected to the seat frame, but is connected through the first ear seat. The first ear seat has a certain length, thus giving the push rod sufficient space to expand. Similarly, the fixed frame and the driving member are not directly connected either. Instead, the driving member is connected to the second ear seat. Therefore, the first ear seat and the second ear seat give the driving member sufficient space to expand the push rod, without affecting the forward and backward sliding of the seat frame and the lying down and standing up of the backrest frame. At the same time, the end of the transmission rod connected to the fixed frame is also connected through the third ear seat, thereby achieving a stable connection between the transmission rod and the fixed frame by raising the connection position of the transmission rod.

[0014] An anti-lever lying chair frame with a zero-occupancy function can be further configured as follows: a slide rail is provided on the fixed frame, and the seat frame is slidably arranged back and forth on the slide rail.

[0015] With the above technical solution, the seat frame can be restricted to slide back and forth on the slide rail through the slide rail. The slide rail can be set as an inverted L shape protruding towards both sides, and the seat frame can be installed with an L shape protruding towards the inside. The two are in mutual contact, so it will not slide left and right, causing instability when the entire massage chair frame lies down and stands up, thereby increasing the overall stability of the massage chair frame.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Is a perspective view of an embodiment of the present invention.

[0018] Figure 2 Is an embodiment of the present invention Figure 1 Exploded structural schematic diagram.

[0019] Figure 3 Is an embodiment of the present invention Figure 1 Connection structure schematic diagram of the fixed frame and the backrest frame in.

[0020] Figure 4 Is an embodiment of the present invention Figure 3 Enlarged view of part A in.

[0021] Figure 5 Is an embodiment of the present invention Figure 1 Front view of the seat frame moving backward and the backrest frame standing up in.

[0022] Figure 6 Is an embodiment of the present invention Figure 1 Front view of the seat frame moving forward and the backrest frame lying down in.

[0023] Figure 7 Is an embodiment of the present invention Figure 5 Motion schematic diagram of the transmission structure of.

[0024] Figure 8 Is an embodiment of the present invention Figure 6 Motion schematic diagram of the transmission structure of.

[0025] In the figure: 1, fixed frame; 2, seat frame; 3, backrest frame; 4, driving member; 5, slide rail; 10, transmission structure; 11, transmission member; 12, transmission rod; 13, hook; 14, positioning pin; 21, first ear seat; 22, second ear seat; 23, third ear seat; 41, push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. 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 shall fall within the protection scope of the present utility model.

[0027] Embodiment: As Figures 1 - 8 shown, a reverse lever lying chair frame with a zero-occupancy function includes a fixed frame 1, a seat frame 2, a backrest frame 3, and a driving member 4. The driving member 4 drives the seat frame 2 to slide back and forth on the fixed frame 1. The driving member 4 is an electric cylinder or an electric push rod. The first end of the driving member 4 is rotatably arranged on the fixed frame 1, and the second end of the driving member 4 is provided with a telescopic push rod 41. One end of the push rod 41 is telescopically arranged in the driving member 4, and the other end is rotatably connected to the seat frame 2. A first ear seat 21 is provided at the bottom of the seat frame 2, and the push rod 41 is rotatably connected in the first ear seat 21. A second ear seat 22 and a third ear seat 23 are provided at the top of the fixed frame 1. The first end of the driving member 4 is rotatably arranged on the second ear seat 22. The push rod 41 is not directly connected to the seat frame 2, but is connected through the first ear seat 21. The first ear seat 21 has a certain length, so as to give the push rod 41 sufficient space to expand. Similarly, the fixed frame 1 and the driving member 4 are not directly connected either. The driving member 4 is connected to the second ear seat 22. Therefore, the first ear seat 21 and the second ear seat 22 give the driving member 4 sufficient space to expand the push rod 41, and will not affect the forward and backward sliding of the seat frame 2 and the lying down and standing up of the backrest frame 3. The first end of the backrest frame 3 is rotatably arranged on one side of the seat frame 2. A transmission structure 10 is provided between the fixed frame 1 and the seat frame 2 to make the second end of the backrest frame 3 lie down or stand up when the seat frame 2 slides back and forth. The push rod 41 on the electric cylinder controls the forward and backward movement of the seat frame 2 by extending or shortening, and controls the opening angle of the backrest frame 3 by the extended or shortened distance. A reverse lever lying chair frame with a zero-occupancy function, a transmission structure 10 is provided between the fixed frame 1 and the seat frame 2 to make the second end of the backrest frame 3 lie down or stand up when the seat frame 2 slides back and forth. The transmission structure 10 includes a transmission member 11 and a transmission rod 12. The connection end of the backrest frame 3 and the seat frame 2 is located above the horizontal plane of the position where the seat frame 2 is located. The transmission member 11 is located below the horizontal plane of the position where the seat frame 2 is located and is rotatably connected to one end of the transmission rod 12. The other end of the transmission rod 12 is rotatably connected to the fixed frame 1. When the seat frame 2 slides back and forth, the first end of the backrest frame is driven through the transmission structure 10, and the second end of the backrest frame 3 is made to lie down or stand up. A hook 13 is provided at the top of the transmission member 11. A positioning pin 14 is inserted through one end of the transmission rod 12 connecting the transmission member 11, and both ends of the positioning pin 14 are hooked and limited in the hook 13. As Figure 5 and Figure 7As shown, when the driving member 4 causes the seat frame 2 to slide forward, that is, to slide away from the backrest frame 3, since both ends of the transmission rod 12 are rotatably connected to the fixed frame 1 and the transmission member 11 respectively, and since the rotation connection point between the transmission rod 12 and the fixed frame 1 does not slide back and forth, the other end of the transmission rod 12 rotates with this point as the rotation axis, thereby driving the transmission member 11 to move up and down. The transmission member 11 can be fixedly arranged with the backrest frame 3 or integrally arranged. Since the connection end between the backrest frame 3 and the seat frame 2 is above the horizontal plane of the position where the seat frame 2 is located, and the transmission member 11 is below the horizontal plane of the position where the seat frame 2 is located and is rotatably connected to one end of the transmission rod 12, the two connection points are arranged at different heights. By arranging the rotation connection point between the backrest frame 3 and the seat frame 2, the rotation connection point between the transmission member 11 and the transmission rod 12, and the rotation connection point between the fixed frame 1 and the transmission rod 11 in sequence from high to low to form a three-point hinge, when the driving member 4 pushes the seat frame 2 to slide, a reverse lever is formed through the transmission structure 10. When the driving member 4 pushes forward, the distance between the transmission rod 12 and the backrest frame 3 shortens, the included angle between the transmission rod 12 and the transmission member 11 becomes smaller, and the transmission member 11 drives the first end of the backrest frame 3 to fall, so the second end of the backrest frame 3 is lifted. At this time, the transmission member 11 can drive the backrest frame 3 to rotate and lift counterclockwise along the rotation connection point with the seat frame 2, that is, the reverse lever principle. At this time, the entire chair frame forms a sitting posture state. Similarly, as Figure 6 and Figure 8 shown, when the driving member 4 moves backward and causes the seat frame 2 to slide backward, that is, to slide toward one end of the backrest frame 3, the transmission rod 12 rotates and lifts with the rotation point of the fixed frame 1 as the rotation axis, so the transmission member 11 also rises accordingly. Since the distance between the transmission rod 12 and the backrest frame 3 becomes longer, the included angle between the transmission rod 12 and the transmission member 11 becomes larger, and the transmission member 11 drives the first end of the backrest frame 3 to rise, so the second end of the backrest frame 3 rotates and falls along the rotation connection point with the seat frame 2. The transmission member 11 drives the backrest frame 3 to rotate and fall in the clockwise direction. Since only one driving member 4 is needed to realize the forward and backward movement of the seat frame 2 and the reclining and upright of the backrest frame 3, at this time, the entire chair frame forms a lying posture state. Since only one driving member 4 can realize the rotation and lifting and falling of the backrest frame through the reverse lever, the installation space inside the massage chair is saved. At the same time, the lifting and falling of the backrest frame 3 do not need to occupy the space of the aisle, so as to adapt to public places such as airports and railway stations where there is no high wall at the back and a relatively wide walking aisle needs to be maintained in the front position, realizing the "zero occupation of the aisle" function.

[0028] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-lever lying chair frame with a zero-occupancy function, comprising a fixed frame (1), a seat frame (2), a backrest frame (3) and a driving member (4), wherein the driving member (4) drives the seat frame (2) to slide back and forth on the fixed frame (1), and the first end of the backrest frame (3) is rotatably arranged on one side of the seat frame (2), characterized in that: A transmission structure (10) is provided between the fixing frame (1) and the seat frame (2) to make the second end of the backrest frame (3) lie down or stand up when the seat frame (2) slides back and forth. The transmission structure (10) includes a transmission member (11) and a transmission rod (12). The connecting end of the backrest frame (3) and the seat frame (2) is located above the horizontal plane of the position where the seat frame (2) is located. The transmission member (11) is located below the horizontal plane of the position where the seat frame (2) is located. One end of the transmission rod (12) is rotatably connected to the transmission member (11), and the other end is rotatably connected to the fixing frame (1). When the seat frame (2) slides back and forth, the first end of the backrest frame is driven through the transmission structure (10) to make the second end of the backrest frame (3) lie down or stand up.

2. The anti-lever reclining chair frame with zero-occupancy function according to claim 1, characterized in that: A hook (13) is provided at the top of the transmission member (11). A positioning pin (14) is inserted through one end of the transmission rod (12) connected to the transmission member (11). Both ends of the positioning pin (14) are hooked and limited within the hook (13).

3. The anti-lever reclining chair frame with zero-occupancy function according to claim 1, characterized in that: The driving member (4) is an electric cylinder. The first end of the driving member (4) is rotatably provided on the fixing frame (1). The second end of the driving member (4) is provided with a telescopic push rod (41). One end of the push rod (41) is telescopically provided within the driving member (4), and the other end is rotatably connected to the seat frame (2).

4. A counter-lever lying chair frame with a zero-occupancy function according to claim 3, characterized in that: A first ear seat (21) is provided at the bottom of the seat frame (2). The push rod (41) is rotatably connected within the first ear seat (21). A second ear seat (22) and a third ear seat (23) are provided at the top of the fixing frame (1). The first end of the driving member (4) is rotatably provided within the second ear seat (22). One end of the transmission rod (12) is rotatably provided within the third ear seat (23).

5. A reverse lever lying chair frame with a zero-occupancy function according to any one of claims 1-4, characterized in that: A slide rail (5) is provided on the fixing frame (1). The seat frame (2) is slidably provided back and forth on the slide rail (5).

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