A back lifting mechanism

Abstract

The utility model discloses a back lifting mechanism, including upper frame, with the lower frame of upper frame swing joint and the lifting mechanism of connecting between upper frame and lower frame, the lifting mechanism includes with the driver of upper frame swing joint, with the both sides fixed connection of driver telescopic end, with the connecting rod of bearing swing joint, with the pull rod of connecting rod swing joint, with the rotary support of pull rod swing joint, with the rotary lever of rotary support fixed connection, with the pulley support of rotary lever both ends respectively fixed connection and install pulley support on pulley. The utility model provides a back lifting mechanism, under the mutual cooperation of driver, connecting rod, bearing, pull rod, rotary support, rotary lever, pulley support and pulley, reliably completes the two -segment type lifting of upper frame and reset action, satisfies the back lifting experience under different state, thereby brings the experience similar to electric bed for the user.

Description

Technical Field

[0001] This utility model relates to the field of household products technology, specifically to a back lifting mechanism. Background Technology

[0002] As an emerging home furnishing product, smart electric beds are gradually gaining market attention and consumer favor. However, due to their integrated intelligent control modules and complex transmission structures, the overall price of smart electric beds on the market is generally high, far exceeding the home furnishing budget of most ordinary families. Secondly, conventional smart electric beds suffer from poor compatibility and cannot be adapted to existing beds. In most households, existing beds still function well, and consumers are unwilling to replace their existing beds to use smart electric beds, yet still want to enjoy the new backrest lifting experience offered by electric beds. Therefore, there is an urgent need to develop an affordable, compatible, and structurally reliable backrest lifting mechanism to solve these problems. Utility Model Content

[0003] This utility model addresses the shortcomings of the existing technology by providing a back lifting mechanism.

[0004] This utility model is achieved through the following technical solution: A back lifting mechanism includes an upper frame, a lower frame rotatably connected to the upper frame, and a lifting mechanism connecting the upper frame and the lower frame; the lifting mechanism includes a driver rotatably connected to the upper frame, a connecting rod fixedly connected to both sides of the telescopic end of the driver, a bearing rotatably connected to the connecting rod, a pull rod rotatably connected to the connecting rod, a rotating bracket rotatably connected to the pull rod, a rotating rod fixedly connected to the rotating bracket, a pulley bracket fixedly connected to both ends of the rotating rod, and pulleys mounted on the pulley bracket.

[0005] According to the above technical solution, as a further preferred technical solution, the upper frame is fixedly connected to frame guide rails that slide in cooperation with pulleys on both sides.

[0006] According to the above technical solution, as a further preferred technical solution, the two sides of the lower frame are fixedly connected to sliding brackets, the sliding brackets are provided with elongated slots for the connecting rod to pass through, and the upper surface of the sliding brackets slides in cooperation with the connecting rod.

[0007] According to the above technical solution, as a further preferred technical solution, the two ends of the upper frame are respectively rotatably connected to the lower frame via rotating hinges.

[0008] According to the above technical solution, as a further preferred technical solution, the tail end of the driver is rotatably connected to the upper frame through a first connecting bracket.

[0009] According to the above technical solution, as a further preferred technical solution, the two ends of the rotating rod are rotatably connected to the lower frame through the second connecting frame.

[0010] Compared with the prior art, this utility model has the following advantages and beneficial effects: This utility model provides a backrest lifting mechanism that, through the coordinated action of a driver, connecting rod, bearing, pull rod, rotating bracket, rotating rod, pulley bracket, and pulley, reliably completes the two-stage lifting and resetting action of the upper frame, satisfying the backrest lifting experience in different states, thereby bringing users an experience similar to an electric bed. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention in its flattened state; Figure 2 This is a structural diagram of the first stage of the lifting state of this utility model; Figure 3 This is a schematic diagram of the structure of the second lifting state of this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of part A. Detailed Implementation

[0012] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0013] A back lifting mechanism includes an upper frame 1, a lower frame 2 rotatably connected to the upper frame 1, and a lifting mechanism connecting the upper frame 1 and the lower frame 2; the lifting mechanism includes a driver 3 rotatably connected to the upper frame 1, a connecting rod 4 fixedly connected to both sides of the telescopic end of the driver 3, a bearing 5 rotatably connected to the connecting rod 4, a pull rod 6 rotatably connected to the connecting rod 4, a rotating bracket 7 rotatably connected to the pull rod 6, a rotating rod 8 fixedly connected to the rotating bracket 7, a pulley bracket 9 fixedly connected to both ends of the rotating rod 8, and a pulley 10 mounted on the pulley bracket 9.

[0014] This invention reliably completes the two-stage lifting and resetting action of the upper frame 1 through the coordinated action of the driver 3, connecting rod 4, bearing 5, pull rod 6, rotating bracket 7, rotating rod 8, pulley bracket 9 and pulley 10, satisfying the back lifting experience in different states, thereby bringing users an experience similar to an electric bed.

[0015] Furthermore, in another embodiment, the upper frame 1 is fixedly connected to both sides of a frame guide rail 11 that slides in cooperation with the pulley 10.

[0016] The frame guide rails 11 fixed on both sides of the upper frame 1 cooperate with the pulleys 10 to provide precise rolling guidance for the pulleys 10 and prevent the pulleys 10 from shifting during the process of pushing the upper frame 1.

[0017] Furthermore, in another embodiment, sliding brackets 12 are fixedly connected to both sides of the lower frame 2. The sliding brackets 12 have elongated holes 121 through which the connecting rod 4 passes, and the upper surface of the sliding brackets 12 slides in cooperation with 5.

[0018] The sliding brackets 12 on both sides of the lower frame 2 and the elongated slots 121 provide linear motion guidance for the connecting rod 4. The bearings 5 ​​ensure smoother movement of the connecting rod 4 when it drives the subsequent components, thus improving the overall motion efficiency of the mechanism.

[0019] Furthermore, in another embodiment, the two ends of the upper frame 1 are rotatably connected to the lower frame 2 via rotating hinges 13.

[0020] By setting a rotating hinge 13, the upper frame 1 can rotate stably around the rotating hinge 13, avoiding misalignment or jamming when the upper frame 1 is lifted, ensuring that the upper frame 1 is firmly connected during repeated lifting and resetting, and improving the stability of the mechanism operation.

[0021] Furthermore, in another embodiment, the tail end of the driver 3 is rotatably connected to the upper frame 1 via the first connecting bracket 14.

[0022] By setting the first connecting frame 14, the driver 3 is allowed to adjust its own posture as the angle of the upper frame 1 changes when it extends or retracts, ensuring that the extension end of the driver 3 can always smoothly drive the connecting rod 4 and ensure that the power transmission is uninterrupted.

[0023] Furthermore, in another embodiment, the two ends of the rotating rod 8 are rotatably connected to the lower frame 2 via the second connecting frame 15.

[0024] By setting the second connecting frame 15, a fixed and stable rotation fulcrum is provided for the rotating rod 8, so that the rotating bracket 7 can rotate precisely around the axis of the rotating rod 8, ensuring that the lifting action of the upper frame 1 is executed accurately.

[0025] The working principle of one embodiment of this utility model is as follows: When the upper frame needs to be lifted, the actuator 3 extends and pushes the bearing 5 forward through the elongated hole 121 of the sliding bracket 12. At the same time, the pull rod 6 drives the rotating rod 8 and the pulley bracket 9 to rotate upward, so that the pulley 10 on the pulley bracket 9 slides with the frame guide rail 11, thereby lifting the upper frame 1. When the bearing 5 reaches the maximum angle, the actuator 3 continues to extend and continuously lifts the upper frame 1 until the actuator 3 stops, so that the mechanism obtains the maximum angle. When the upper frame 1 needs to be leveled, the driver 3 retracts, the upper frame 1 descends, the frame guide rail 11 contacts the pulley 10 first, and continues to descend. The rotating rod 8 rotates, and the bearing 5 is pulled back through the pull rod 6, so that the upper frame 1 continues to descend until it is level.

[0026] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use a back lifting mechanism of this utility model and achieve the positive effects described herein.

[0027] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0028] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A back lifting mechanism, characterized in that: It includes an upper frame (1), a lower frame (2) rotatably connected to the upper frame (1), and a lifting mechanism connecting the upper frame (1) and the lower frame (2); the lifting mechanism includes a driver (3) rotatably connected to the upper frame (1), a connecting rod (4) fixedly connected to both sides of the telescopic end of the driver (3), a bearing (5) rotatably connected to the connecting rod (4), a pull rod (6) rotatably connected to the connecting rod (4), a rotating bracket (7) rotatably connected to the pull rod (6), a rotating rod (8) fixedly connected to the rotating bracket (7), a pulley bracket (9) fixedly connected to both ends of the rotating rod (8), and a pulley (10) installed on the pulley bracket (9).

2. The back lifting mechanism according to claim 1, characterized in that: The upper frame (1) is fixedly connected to two sides of a frame guide rail (11) that slides in cooperation with the pulley (10).

3. The back lifting mechanism according to claim 1, characterized in that: The lower frame (2) is fixedly connected to two sides by sliding brackets (12). The sliding brackets (12) have a strip-shaped hole (121) through which the connecting rod (4) passes, and the upper surface of the sliding brackets (12) slides in cooperation with (5).

4. The back lifting mechanism according to claim 1, characterized in that: The two ends of the upper frame (1) are rotatably connected to the lower frame (2) via rotating hinges (13).

5. A back lifting mechanism according to claim 1, characterized in that: The tail end of the driver (3) is rotatably connected to the upper frame (1) via the first connecting bracket (14).

6. The back lifting mechanism according to claim 1, characterized in that: The two ends of the rotating rod (8) are rotatably connected to the lower frame (2) through the second connecting frame (15).

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