Lifting structure and electronic device

Abstract

The application discloses a lifting structure and an electronic device. The lifting structure comprises a frame and a lifting module. The lifting module is movably installed on the frame. The lifting module comprises a metal piece and a plastic piece. An injection molding position is reserved on the upper portion of the metal piece. The plastic piece is formed on the upper portion of the metal piece by injection molding. The outer surface of the plastic piece and the lower portion of the metal piece are smoothly connected. The application replaces the non-stress area of the metal piece with the plastic piece, reduces the amount of high-priced metal materials such as aluminum alloy and stainless steel, and reduces the cost of raw materials.

Description

Technical Field

[0001] This application relates to the technical field of lifting structures, and more particularly to a lifting structure and electronic equipment. Background Technology

[0002] In current electronic devices with lifting functions, the stable and precise lifting movement of the lifting module is one of the core requirements to ensure the normal operation of the device.

[0003] In existing technologies, to ensure that the lifting block possesses sufficient mechanical strength, structural stability, and wear resistance to withstand the stress requirements of long-term reciprocating lifting motion, the industry generally uses all-metal materials to manufacture the lifting block, with aluminum alloy and stainless steel being the mainstream choices. Meanwhile, to achieve precise fit between the lifting block and other components, existing processing techniques primarily employ Computer Numerical Control (CNC) machining. CNC machining requires multiple cutting and milling processes to achieve complex structures and high-precision dimensions, but it involves high equipment investment costs, long processing cycles, and low material utilization, resulting in high unit processing costs and consequently, a relatively high overall cost for the finished product. Utility Model Content

[0004] The purpose of this application is to provide a lifting structure and electronic device to solve the technical problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution: On one hand, a lifting structure is provided, including: a frame and a lifting module, the lifting module being movably installed on the frame, the lifting module including a metal part and a plastic part, the upper part of the metal part having a reserved injection molding position, the plastic part being injection molded onto the upper part of the metal part, and the outer surface of the plastic part smoothly transitioning to the lower outer surface of the metal part.

[0006] Furthermore, the metal part is made of zinc alloy or magnesium alloy.

[0007] Furthermore, the back of the metal part is provided with a plurality of positioning posts, which can be used for positioning in conjunction with injection molding equipment.

[0008] Furthermore, the frame is provided with guide blocks, which guide and cooperate with the plastic parts.

[0009] Furthermore, the guide block has a protrusion on the side facing the plastic part, and the plastic part has guide grooves on both sides that cooperate with the protrusion. The protrusion is slidably disposed in the guide groove.

[0010] Furthermore, an arc-shaped groove is formed on the side of the guide block facing the plastic part, and arc-shaped portions that cooperate with the arc-shaped groove are formed on both sides of the plastic part.

[0011] Furthermore, a soft rubber component is provided inside the arc-shaped groove, and the soft rubber component contacts and guides the arc-shaped portion.

[0012] Furthermore, the guide block has a groove on the side facing the plastic part, and a guide wheel is provided in the groove, the guide wheel contacting and guiding the side of the plastic part.

[0013] Furthermore, the guide wheel is rotatably mounted in the groove via a pin, and the outer periphery of the guide wheel has an arc-shaped guide surface that guides and cooperates with the plastic part.

[0014] Furthermore, two guide blocks are provided, which are symmetrically arranged on the frame and are respectively opposite to the two sides of the lifting module.

[0015] Furthermore, the top of the frame is provided with an opening, and the lifting module can move and extend in the direction of the opening, wherein the junction of the lower part of the plastic part and the metal part is always within the frame.

[0016] On the other hand, an electronic device is also provided, including: a lifting structure as described above.

[0017] The beneficial effects of this application are as follows: on the one hand, by replacing the non-stressed areas of the metal parts with plastic parts, the amount of high-priced metal materials such as aluminum alloy and stainless steel is reduced, thereby lowering the cost of raw materials; on the other hand, the plastic parts adopt the injection molding process, which simplifies the production process, shortens the processing cycle, reduces equipment investment and energy consumption, and further reduces processing costs compared to the CNC multi-cutting machining that traditional all-metal lifting blocks rely on, ultimately solving the problem that the high manufacturing cost of lifting blocks in the prior art leads to the high price of the overall finished electronic device. Attached Figure Description

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the lifting module described in the embodiments of this application. Figure 1 ; Figure 2 This is a schematic diagram of the lifting module described in the embodiments of this application. Figure 2 ; Figure 3 This is an exploded view of the lifting module described in the embodiments of this application; Figure 4 This is an assembly drawing of the frame and lifting module described in the embodiments of this application; Figure 5 This is a schematic diagram of the guiding structure of the lifting module and guide block according to one embodiment of this application; Figure 6 This is a schematic diagram of the guiding structure of the lifting module and guide block according to another embodiment of this application; Figure 7 This is a schematic diagram of the guiding structure of the lifting module and guide block according to another embodiment of this application.

[0020] In the diagram: 1. Frame; 2. Lifting module; 201. Metal part; 202. Plastic part; 2011. Injection molding position; 2012. Positioning post; 2021. Guide groove; 2022. Arc-shaped part; 3. Guide block; 301. Protrusion; 302. Arc-shaped groove; 303. Soft rubber part; 304. Groove; 305. Guide wheel; 306. Pin. Detailed Implementation

[0021] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] like Figures 1-4As shown, this embodiment provides a lifting structure, including: a frame 1 and a lifting module 2. The lifting module 2 is movably installed on the frame 1. The lifting module 2 includes a metal part 201 and a plastic part 202. The upper part of the metal part 201 has a reserved injection molding position 2011. The plastic part 202 is injection molded on the upper part of the metal part 201, and the outer surface of the plastic part 202 smoothly transitions with the lower outer surface of the metal part 201.

[0025] Based on the above scheme, the metal part 201 of the lifting module 2 adopts a functional partition design with the lower part bearing the load and the upper part supporting the frame. The lower part retains the core load-bearing area of ​​the metal substrate, which can bear the reciprocating load and friction loss during the lifting movement, meet the mechanical strength and wear resistance required by the structure, and adapt to the reliability requirements of long-term reciprocating movement; the upper part is designed as an embedded frame structure, embedded in the plastic part 202. On the one hand, during the injection molding stage, the rigid constraint of the metal frame suppresses the deformation of the molten plastic caused by uneven melt flow and cooling shrinkage, such as warping and dents, ensuring the dimensional accuracy of the plastic part 202; on the other hand, through the mechanical interlocking of the interface between the metal frame and the plastic, it makes up for the lack of rigidity of the plastic material itself, and improves the overall bending stiffness and torsional stiffness of the composite structure.

[0026] Furthermore, by calibrating the injection mold and the metal part 201 with reference positioning, the contour references of the outer surface of the plastic part 202 and the lower outer surface of the metal part 201 are fully matched, achieving a smooth transition without steps or gaps at the joint. This design ensures the structural integrity of the outer surface of the lifting module 2, avoiding motion interference caused by surface protrusions 301 and gaps; on the other hand, it ensures a uniform gap fit between the lifting module 2 and the frame 1, guide rails, and other mating components, reducing motion friction resistance and preventing dust and impurities from accumulating in the gaps, thus improving the stability of the lifting motion.

[0027] Moreover, this solution optimizes costs from at least two directions. On the materials side, by replacing the non-stressed areas of the metal part 201 with the plastic part 202, the amount of high-cost metal substrate used is reduced, thus lowering raw material costs. On the manufacturing process side, the plastic part 202 adopts an integrated injection molding process, which simplifies the manufacturing process and shortens the processing cycle compared to the CNC multi-process cutting of traditional all-metal lifting blocks. Furthermore, the injection molding process has a higher material utilization rate, significantly reducing process losses and the energy consumption of high-precision CNC equipment. This solution addresses the cost issues of existing technologies from both material and process perspectives.

[0028] Specifically, the metal part 201 is made of zinc alloy or magnesium alloy. From the perspective of forming accuracy, zinc alloy has excellent casting fluidity and filling properties, and can accurately form the complex structure of metal part 201 through die casting process, ensuring that the dimensional accuracy and geometric tolerance of metal part 201 meet the design requirements. It can achieve the reference matching with the injection mold without additional multiple cutting processes, providing a basis for the smooth transition between the plastic part 202 and the lower outer surface of the metal part 201 after injection molding. Although magnesium alloy has slightly inferior casting fluidity than zinc alloy, high-precision forming can still be achieved by optimizing the die casting process parameters, and its material properties are more suitable for application scenarios with higher requirements for lightweighting.

[0029] From the perspective of mechanical properties, both zinc alloy and magnesium alloy have the mechanical strength to meet the requirements of lifting module 2: the tensile strength and fatigue resistance of zinc alloy can support the lower stress area to withstand the reciprocating load and friction loss during lifting movement, avoiding deformation during long-term use; although the absolute strength of magnesium alloy is slightly lower than that of zinc alloy, its specific strength is better, which can not only bear the supporting and constraining role of the upper frame on the plastic part 202, but also further reduce the weight of the metal part 201 itself, which is in line with the lightweight design goal of composite structure.

[0030] In addition, both alloys have good interfacial bonding properties. Their surfaces can be roughened by slight chemical treatment to enhance the mechanical interlocking ability with the plastic part 202 during the injection molding process, prevent the metal part 201 and the plastic part 202 from separating at the interface during long-term movement, and ensure the integrity of the composite structure.

[0031] Furthermore, the back of the metal part 201 is provided with a plurality of positioning posts 2012, which can be used for positioning in conjunction with injection molding equipment. In the injection molding process, the metal part 201 must first be precisely fixed inside the cavity of the injection mold, and then molten plastic is injected to form the plastic part 202. At this time, the positioning posts 2012 on the back of the metal part 201 can form a one-to-one insertion fit with the preset positioning holes in the injection mold. The column structure of the positioning post 2012 and the hole wall of the positioning hole form a rigid constraint, which restricts the translational displacement of the metal part 201 along the X-axis and Y-axis and the rotational displacement around the Z-axis in the mold cavity, ensuring that the metal part 201 is always in the preset reference position during the injection molding process.

[0032] Meanwhile, the distributed arrangement of multiple positioning posts 2012 can form multi-point positioning support, further improving the positioning stability of the metal part 201 in the mold, avoiding the positional displacement of the metal part 201 caused by the impact pressure during the injection of molten plastic, thereby ensuring that the plastic part 202 can be accurately formed at the injection position 2011 on the upper part of the metal part 201, and ensuring the relative positional accuracy between the outer surface of the plastic part 202 and the lower outer surface of the metal part 201, providing a process-level positioning guarantee for the smooth transition between the two.

[0033] In some embodiments, a guide block 3 is provided on the frame 1, and the guide block 3 guides and engages with the plastic part 202. The guide block 3, as a reference component fixed to the frame 1, has a guide structure with a preset geometric shape on its side facing the plastic part 202. This structure forms a precise sliding pair with a corresponding mating structure formed on the plastic part 202. During the movement of the lifting module 2 along the frame 1, the guide structure of the guide block 3 restricts the radial translational freedom of the plastic part 202 perpendicular to the lifting direction through surface or line contact constraints. Simultaneously, the guide engagement gap between the guide block 3 and the plastic part 202 is precisely designed and controlled to avoid movement jamming due to excessive tightness and radial wobbling due to excessive looseness, ensuring that the lifting module 2 always moves along a predetermined trajectory throughout its entire lifting stroke, providing a trajectory reference guarantee for the precise positioning and smooth movement of the lifting module 2.

[0034] Specifically, such as Figure 5 As shown, the guide block 3 has a protrusion 301 on the side facing the plastic part 202. The plastic part 202 has guide grooves 2021 on both sides that guide and cooperate with the protrusion 301. The protrusion 301 is slidably disposed within the guide grooves 2021. In the assembled state, the protrusion 301 of the guide block 3 is completely embedded in the guide groove 2021 of the plastic part 202. The two side walls of the guide groove 2021 form a tight fit with the two side surfaces of the protrusion 301. The groove walls of the guide groove 2021 can rigidly constrain the protrusion 301 from both the horizontal and vertical directions, limiting the displacement of the protrusion 301 perpendicular to the lifting direction and preventing relative displacement between the guide block 3 and the plastic part 202. Simultaneously, the upper and lower openings of the guide groove 2021 are continuous along the lifting direction, providing sliding space for the protrusion 301 along the Z-axis, allowing the protrusion 301 to slide smoothly within the guide groove 2021 as the lifting module 2 moves.

[0035] Furthermore, the fit clearance between the protrusion 301 and the guide groove 2021 is precisely designed to ensure that the protrusion 301 slides smoothly within the groove without jamming, while minimizing the clearance further suppresses radial swaying of the lifting module 2. Simultaneously, the edge of the guide groove 2021 provides a certain degree of restraint to the protrusion 301, preventing it from dislodging and ensuring the stability of the sliding fit. Ultimately, this achieves precise linear movement of the lifting module 2 along a preset trajectory. This guiding method offers the highest guiding accuracy, and since the interior of the guide groove 2021 is a concealed area, minor wear is acceptable and usable.

[0036] To address the need for reduced frictional resistance during the guiding process, and to further reduce friction during the guiding process, guide block 3 is made of a material with excellent self-lubricating properties. Self-lubricating materials typically have a special molecular structure or contain added solid lubricants. During the relative movement between guide block 3 and plastic part 202, on the one hand, the material itself has an extremely low coefficient of friction, which can directly reduce interface sliding or rolling friction; on the other hand, some of the material will slowly release trace amounts of lubricant during the movement, forming an extremely thin lubricating film at the mating interface, avoiding direct rigid friction between guide block 3 and plastic part 202, and further reducing frictional resistance.

[0037] In the context of guiding the lifting module 2, commonly used self-lubricating materials include polyoxymethylene (POM), polytetrafluoroethylene (PTFE), and ultra-high molecular weight polyethylene (UHMWPE). Each material adapts to the guiding requirements through different mechanisms: for example, PTFE relies on its fluorocarbon chain structure to achieve extremely low friction, while UHMWPE, with its high molecular chain characteristics, combines lubrication and impact resistance. Both can effectively reduce frictional resistance in the cooperation between the guide block 3 and the plastic part 202 by leveraging their own material properties.

[0038] As an optional specific implementation plan, such as Figure 6 As shown, the guide block 3 has an arc-shaped groove 302 formed on the side facing the plastic part 202. Arc-shaped portions 2022 are formed on both sides of the plastic part 202 to guide and cooperate with the arc-shaped groove 302. A soft plastic part 303 is disposed within the arc-shaped groove 302, and the soft plastic part 303 contacts and guides the arc-shaped portion 2022. The curved surface contours of the arc-shaped groove 302 and the arc-shaped portion 2022 are precisely matched. Through the contact between the concave arc-shaped surface and the convex arc-shaped surface, a sliding degree of freedom is formed along the lifting direction. At the same time, the geometric characteristics of the curved surface constrain the radial offset of the plastic part 202 in the lateral and longitudinal directions, ensuring that the lifting module 2 moves along a preset trajectory. Compared with a planar guide structure, the curved surface contact has a larger contact area, more uniform guiding constraint, can disperse contact stress, and reduce the risk of localized wear.

[0039] The soft rubber part 303 set in the arc groove 302 serves as an intermediate contact layer. Because its material hardness is lower than that of the plastic part 202, the soft rubber part 303 absorbs the contact stress through its own deformation when the two slide relative to each other, thus avoiding direct rigid contact between the guide block 3 and the plastic part 202. At the same time, the soft rubber part 303 adopts a detachable installation. Its detachable installation structure allows it to be disassembled and installed independently, such as snap-fit ​​connection and fitting fixation, which facilitates replacement after wear and maintains the stability of the guide fit.

[0040] As another optional specific implementation scheme, such as Figure 7As shown, the guide block 3 has a groove 304 on the side facing the plastic part 202. The guide wheel 305 is rotatably mounted in the groove 304 via a pin 306. The guide wheel 305 contacts and guides the side of the plastic part 202, and the outer periphery of the guide wheel 305 forms an arc-shaped guide surface that guides and cooperates with the plastic part 202. The pin 306 serves as the rotation axis of the guide wheel 305, with both ends fixed to the inner wall of the groove 304, providing rigid support for the guide wheel 305 and ensuring that it can still rotate stably around the axis under stress, preventing the guide wheel 305 from shifting or tilting due to radial force. The arc-shaped guide surface on the outer periphery of the guide wheel 305 forms a suitable curved surface contact with the side of the plastic part 202. Through the geometric constraint of the arc-shaped contour, the radial offset of the plastic part 202 is restricted laterally. At the same time, the curvature design of the arc surface matches the side contour of the plastic part 202, which can disperse contact stress and avoid local stress concentration.

[0041] When the lifting module 2 moves, the side of the plastic part 202 pushes the guide wheel 305 to rotate around the pin 306, converting sliding friction into rolling friction and reducing motion resistance. Simultaneously, compared to planar or line contact, the curved contact between the arc-shaped guide surface and the curved surface of the plastic part 202 has a larger contact area and more uniform stress distribution. This provides stable constraints on the plastic part 202 from multiple directions, effectively suppressing radial sway, wobble, and rotational deviation during the movement of the lifting module 2, significantly improving trajectory accuracy and repeatability. This high-precision constraint is crucial for precision functions such as camera module focusing and display module alignment, ensuring that functional components accurately match preset positions after being raised and lowered, avoiding functional failures due to guide deviations.

[0042] Preferably, two guide blocks 3 are provided, symmetrically arranged on the frame 1, and respectively opposite to the two sides of the lifting module 2. The two guide blocks 3 are symmetrically mirror-distributed on the frame 1, corresponding to the left and right sides of the lifting module 2, forming a dual-sided synchronous guiding structure. During the movement of the lifting module 2, the guide blocks 3 on both sides apply a balanced constraint force to the lifting module 2 from the lateral direction. Through the synergistic effect of the constraints on both sides, the lateral torque generated by the lifting module 2 due to center of gravity shift, drive off-center load, or external disturbance is offset, limiting its tendency to shift to one side in the lateral direction.

[0043] Meanwhile, the symmetrical arrangement on both sides ensures that the guiding parameters on both sides of the lifting module 2 are consistent, ensuring that the lifting module 2 is subjected to uniform force and synchronous displacement on both sides during movement. This avoids the skewed movement trajectory caused by excessively tight or loose constraints on one side, and provides stable dual-side reference support for the lifting module 2, ensuring that it performs high-precision linear movement along the preset lifting direction.

[0044] Generally, the frame 1 has an opening at its top, allowing the lifting module 2 to extend and move towards the opening. The junction between the lower parts of the plastic component 202 and the metal component 201 is always within the frame 1. The frame 1 serves as the moving carrier for the lifting module 2, and the size of its top opening is adapted to the extended end of the lifting module 2, ensuring that the lifting module 2 can smoothly extend out of the frame 1 to achieve its function when moving along a preset trajectory towards the opening. Simultaneously, by designing the stroke and structural dimensions of the lifting module 2, the junction between the lower parts of the plastic component 202 and the metal component 201—that is, the interface between them—is always surrounded by the inner wall of the frame 1 throughout the entire stroke of the lifting module 2. The frame 1 provides a triple function in enclosing the junction: First, it provides physical protection, isolating external dust, impurities, moisture, and other pollutants from entering the connection gap between the plastic part 202 and the metal part 201. Second, it provides structural constraint, with the inner wall of the frame 1 providing radial support to the junction area, offsetting the stress generated by the center of gravity shift or external lateral forces when the lifting module 2 extends, preventing deformation and separation at the junction due to concentrated force, ensuring the integrity of the composite structure of the metal part 201 and the plastic part 202, and avoiding external collision damage caused by the exposure of the junction area. Third, it ensures aesthetics, as the plastic part 202 and the metal part 201 have a certain color difference in appearance; if both extend, it will create a visual difference, resulting in a poor user experience.

[0045] On the other hand, an electronic device is also provided, including: a lifting structure as described above.

[0046] Specifically, electronic devices can include tablets, smartwatches, smartphones, etc.

[0047] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A lifting structure, characterized in that include: The frame (1) and the lifting module (2) are movably installed on the frame (1). The lifting module (2) includes a metal part (201) and a plastic part (202). The upper part of the metal part (201) has a reserved injection molding position (2011). The plastic part (202) is injection molded on the upper part of the metal part (201), and the outer surface of the plastic part (202) smoothly transitions with the lower outer surface of the metal part (201).

2. The lifting structure according to claim 1, characterized in that, The metal part (201) is made of zinc alloy or magnesium alloy.

3. The lifting structure according to claim 1, characterized in that, The back of the metal part (201) is provided with a plurality of positioning posts (2012), which can be used for positioning in conjunction with injection molding equipment.

4. The lifting structure according to any one of claims 1-3, characterized in that, The frame (1) is provided with a guide block (3), which is guided and cooperates with the plastic part (202).

5. The lifting structure according to claim 4, characterized in that, The guide block (3) has a protrusion (301) on one side facing the plastic part (202), and the plastic part (202) has guide grooves (2021) on both sides that cooperate with the protrusion (301). The protrusion (301) is slidably disposed in the guide groove (2021).

6. The lifting structure according to claim 4, characterized in that, The guide block (3) has an arc-shaped groove (302) on one side facing the plastic part (202), and the plastic part (202) has arc-shaped portions (2022) on both sides that guide and cooperate with the arc-shaped groove (302).

7. The lifting structure according to claim 6, characterized in that, A soft rubber part (303) is provided inside the arc-shaped groove (302), and the soft rubber part (303) contacts and guides the arc-shaped part (2022).

8. The lifting structure according to claim 4, characterized in that, The guide block (3) has a groove (304) on the side facing the plastic part (202), and a guide wheel (305) is provided in the groove (304). The guide wheel (305) contacts and guides the side of the plastic part (202).

9. The lifting structure according to claim 8, characterized in that, The guide wheel (305) is rotatably mounted in the groove (304) via a pin (306), and the outer periphery of the guide wheel (305) has an arc-shaped guide surface that guides and cooperates with the plastic part (202).

10. The lifting structure according to claim 4, characterized in that, There are two guide blocks (3), which are symmetrically arranged on the frame (1) and are respectively opposite to the two sides of the lifting module (2).

11. The lifting structure according to any one of claims 1-3, characterized in that, The top of the frame (1) is provided with an opening, and the lifting module (2) can move and extend in the direction of the opening. The junction of the lower part of the plastic part (202) and the metal part (201) is always within the frame (1).

12. An electronic device, characterized in that, include: The lifting structure as described in any one of claims 1-11.

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