Lifting block structure and electronic device

Abstract

The application discloses a lifting block structure and an electronic device. The lifting block structure comprises a metal support leg and a plastic main body formed on the upper part of the metal support leg by injection molding. The metal support leg can be connected with a driving end of a driving structure, and the movement of the metal support leg can drive the plastic main body to lift. The plastic main body is formed on the metal support leg by the sleeve injection process. The metal support leg provides stable forming support for the plastic during the sleeve injection process, avoids deformation and warping of the plastic due to uneven shrinkage in the cooling and solidification stage, and further ensures the overall structural precision of the lifting block. Moreover, the plastic main body as the main structure of the lifting block structure can significantly reduce the manufacturing cost.

Description

Technical Field

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

[0002] In electronic devices such as smartphones and tablets, in order to achieve the functions of concealed storage or lifting use of precision components while taking into account manufacturing costs, lifting blocks are often designed as an integrated structure of main body and support legs. The main body is used to fix precision components such as cameras and small screens, while the support legs are connected to drive motors to drive the main body and precision components to lift and lower. This structural design can ensure the lifting stroke by adjusting the length of the support legs, reduce the amount of materials used to save overall costs, and at the same time avoid the force of the drive motor directly acting on the main body and affecting the precision components.

[0003] However, existing lifting blocks have obvious defects in material selection, making it difficult to simultaneously meet the requirements of low cost and high precision. One type is made of all-metal material, which can rely on the properties of metal to ensure the structural accuracy of the main body and legs and avoid deformation. However, the high cost of purchasing and processing metal raw materials is not conducive to the mass production of electronic devices and will weaken the product's market competitiveness. Another type is made of all-plastic material through injection molding to control costs. However, the legs are usually designed to be long and thin to meet the lifting stroke. During the injection molding process, factors such as uneven melt flow speed, different mold cooling temperature gradient, and inconsistent shrinkage rate of plastic materials can cause warping, bending, or torsional deformation along the length direction. This will affect the fit clearance between the legs and the drive motor and the transmission stability, which will lead to problems such as lifting block jamming, positioning deviation, and inconsistent reciprocating lifting accuracy. This cannot meet the high precision requirements of electronic devices for camera focusing and small screen display position, and in severe cases, it may even cause precision components to malfunction. Utility Model Content

[0004] The purpose of this application is to provide a lifting block 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 block structure is provided, including: a metal support leg and a plastic body formed by injection molding on the upper part of the metal support leg, wherein the metal support leg can be used to connect to the drive end of a drive structure, and the movement of the metal support leg can drive the plastic body to rise and fall.

[0006] Furthermore, the upper part of the metal support leg is provided with a rubber-pull hole.

[0007] Furthermore, the upper part of the metal support leg is provided with multiple adhesive-pulling positions, and the cross-section of the adhesive-pulling positions is trapezoidal.

[0008] Furthermore, the metal support leg is provided with positioning holes, which can be used for positioning in conjunction with injection molding equipment.

[0009] Furthermore, two positioning holes are provided, one of which is located on the upper part of the metal support leg, and the other is located on the lower part of the metal support leg.

[0010] Furthermore, guide positions are provided on both sides of the plastic body, and guide components are detachably installed on the guide positions. The hardness of the guide components is greater than that of the plastic body.

[0011] Furthermore, after the guide is installed on the plastic body, the outer peripheral surface of the guide is flush with the outer peripheral surface of the side of the plastic body, or the outer peripheral surface of the guide protrudes from the outer peripheral surface of the side of the plastic body.

[0012] Furthermore, the guide position is provided with a plurality of spaced protrusions, which contact and limit the inner side of the guide member.

[0013] Furthermore, the guide is attached to the guide position by an adhesive liquid.

[0014] Furthermore, the guide is made of aluminum alloy or stainless steel; and / or the metal support is made of zinc alloy or magnesium alloy.

[0015] On the other hand, an electronic device is also provided, including: a frame, a drive structure, and the above-described lifting block structure, wherein the lifting block structure is movably mounted on the frame, the drive structure is fixedly mounted on the frame, and the drive end of the drive structure is connected to the metal support leg to drive the metal support leg to move, thereby driving the plastic body to rise and fall relative to the frame.

[0016] The beneficial effects of this application are as follows: On the one hand, the plastic body is injection molded on the metal support using a molding process. During the molding process, the metal support provides stable molding support for the plastic, avoiding deformation and warping of the plastic due to uneven shrinkage during the cooling and curing stage, thereby ensuring the overall structural accuracy of the lifting block.

[0017] On the other hand, the plastic body replaces a large amount of metal materials in the all-metal structure, reducing the procurement of high-cost metal raw materials and CNC machining processes, thus significantly reducing production costs. 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 block structure described in the embodiments of this application; Figure 2This is an exploded view of the lifting block structure described in the embodiments of this application; Figure 3 This is a schematic diagram of the metal support legs described in the embodiments of this application; Figure 4 This is a schematic diagram of the plastic body described in the embodiments of this application; Figure 5 This is a schematic diagram of the internal structure of the electronic device described in the embodiments of this application.

[0020] In the diagram: 1. Metal support leg; 101. Glue-pulling hole; 102. Glue-pulling position; 103. Positioning hole; 2. Plastic body; 201. Guide position; 202. Protrusion; 203. Plastic support leg; 3. Guide component; 4. Frame; 5. Drive structure. 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 block structure, including: a metal support leg 1, and a plastic body 2 formed by injection molding on the upper part of the metal support leg 1. The metal support leg 1 can be used to connect with the driving end of the driving structure 5, and the movement of the metal support leg 1 can drive the plastic body 2 to rise and fall.

[0025] Based on the above scheme, the structure uses metal support 1 as the core of power transmission and structural support. One end of the metal support 1 can be stably connected to the drive end of the drive structure 5. The metal material itself has excellent resistance to deformation, which can fundamentally avoid the problem that the all-plastic support 203 is prone to warping during injection molding due to the need to design it to be long and thin to meet the lifting stroke. This ensures that the fit gap between the support and the drive structure 5 always meets the design standards during the power transmission process. At the same time, the plastic body 2 is injection molded on the metal support 1 using a die-casting process. During the die-casting process, the metal support 1 provides stable molding support for the plastic, avoiding deformation and warping of the plastic due to uneven shrinkage during the cooling and curing stage, thereby ensuring the overall structural accuracy of the lifting block. In terms of cost control, the plastic body 2 replaces a large amount of metal materials in the all-metal structure, reducing the procurement of high-cost metal raw materials and CNC machining processes, and significantly reducing manufacturing costs. In terms of lifting function, when the drive end of the drive structure 5 drives the metal support 1 to move, the metal support 1 can synchronously and stably drive the upper plastic body 2 and the precision components such as the camera and small screen it carries to rise and fall. Moreover, the metal support 1 can buffer the driving force, preventing it from directly acting on the plastic body 2 and the precision components, thus protecting the performance of the components.

[0026] Therefore, this solution brings multiple beneficial effects. First, it effectively balances cost and precision, reducing costs and meeting the needs of large-scale mass production through the plastic body 2, while relying on the metal support 1 and the die-casting process to eliminate deformation problems and ensure lifting and positioning accuracy, thus solving the dilemma of existing technologies. Second, it improves lifting stability and reliability. The strong structural support of the metal support 1 and the high-precision die-casting process avoid problems such as lifting jamming and deviation, ensuring the stable operation of precision components. Third, it enhances the protection of components. The buffered transmission of driving force reduces the risk of damage to precision components, extends the service life of electronic equipment, and ultimately helps electronic equipment to have both cost and performance advantages in market competition.

[0027] Furthermore, the upper part of the metal support 1 is provided with a glue-pulling hole 101. When the lifting block is manufactured using the injection molding process, the molten plastic raw material will be fully filled into the glue-pulling hole 101 of the metal support 1 under the injection pressure. After the plastic cools and solidifies, the plastic filling the glue-pulling hole 101 will form a plastic fitting part that matches the hole structure. This fitting part forms a physical mechanical interlock with the metal support 1, that is, the plastic fitting part cannot be separated from the glue-pulling hole 101, thereby making the plastic body 2 and the metal support 1 form a mutually locking connection, rather than a simple planar bonding. At the same time, the existence of the glue-pulling hole 101 also increases the contact area between the plastic and the metal support 1. Compared with the smooth metal surface without holes, the bonding surface between the plastic melt and the metal support 1 extends from the plane to the inner wall of the hole, which significantly improves the adhesion between the two and further enhances the overall bonding strength.

[0028] This solution effectively eliminates the risk of loose connections. During the long-term repeated lifting and lowering process, the metal support 1 needs to continuously drive the plastic body 2 and precision components to move. Continuous tensile, shear, and vibration forces will be generated between the two. The mechanical engagement formed by the adhesive-pull hole 101 and the increased contact area can stably resist these forces, preventing relative displacement, delamination, or detachment between the plastic body 2 and the metal support 1, ensuring that the two always maintain synchronous movement. Moreover, it ensures the stability of lifting accuracy. If the plastic body 2 and the metal support 1 are not firmly connected, the plastic body 2 may lag behind the movement of the metal support 1 or experience local displacement during the lifting process, resulting in deviations in the lifting position of the precision components. The enhanced connection strength of the adhesive-pull hole 101 ensures lossless power transmission. Every movement of the metal support 1 can be accurately and synchronously transmitted to the plastic body 2, maintaining the consistency of long-term lifting accuracy.

[0029] Furthermore, in addition to the glue-pulling holes 101 on the metal support 1, the upper part of the metal support 1 also has multiple glue-pulling positions 102, and the cross-section of the glue-pulling positions 102 is trapezoidal. During the injection molding process, the molten plastic, under the action of injection pressure, will smoothly fill the groove along the inclined surface of the trapezoidal glue-pulling positions 102. The trapezoidal glue-pulling positions 102 are mostly grooves that are narrow at the top and wide at the bottom opened on the metal support 1. After the plastic cools and solidifies, a trapezoidal plastic fitting part that perfectly matches the trapezoidal cross-section will be formed. The wide end of the fitting part is tightly fitted with the inner wall of the wide end of the groove of the glue-pulling position 102, and the narrow end matches the narrow end of the groove, forming a one-way locking structure similar to a barb. The trapezoidal plastic fitting part cannot detach from the glue-pulling position 102 in a direction perpendicular to the surface of the metal support 1. 2. Structurally, it achieves forced engagement between the plastic body 2 and the metal support 1; at the same time, multiple pull points 102 are evenly distributed on the upper part of the metal support 1, forming a multi-point locking system rather than a single-point connection, further expanding the contact area between the plastic and the metal; and the trapezoidal slope, compared with a plane or rectangular cross section, can increase the contact perimeter between the plastic and the metal support 1, improve the adhesion and friction between molecules, and at the same time, the slope design can avoid dead corners of melt flow during injection molding, ensuring that the plastic in each pull point 102 can be fully filled, and eliminating locking failure caused by incomplete filling.

[0030] Generally, the metal support 1 is provided with a positioning hole 103, which can be used for positioning in conjunction with the injection molding equipment. When the lifting block is manufactured using the overmolding process, when the metal support 1 is first placed into the mold of the injection molding equipment, or when the positioning pin on the mold is precisely engaged with the positioning hole 103 of the metal support 1, the positioning pin can restrict the displacement of the metal support 1 in space: it prevents the metal support 1 from shifting in the horizontal direction, ensuring that its lateral position in the mold is consistent with the design reference, and it also restricts the movement of the metal support 1 in the vertical direction, ensuring that its relative height with the mold cavity meets the process requirements; at the same time, the fit clearance between the positioning hole 103 and the positioning pin is extremely small, which can prevent the metal support 1 from shaking or shifting due to the impact pressure of the molten plastic during the injection molding process, and always maintain a stable molding posture, thereby ensuring that the plastic body 2 is precisely molded in the preset position with the metal support 1 as the reference.

[0031] Preferably, two positioning holes 103 are provided, one of which is located on the upper part of the metal support 1, and the other is located on the lower part of the metal support 1. During injection molding, the two positioning pins of the injection molding equipment are inserted into the positioning holes 103 on the upper and lower parts of the metal support 1, respectively, forming a two-point constraint. According to geometric principles, two points can determine a straight line. The vertical distribution and large spacing of the two positioning holes 103 can form a large-span constraint in the longitudinal direction, which not only restricts the horizontal displacement of the metal support 1, but also effectively suppresses the rotation and tilting of the metal support 1 around a certain point caused by injection pressure or its own weight through the rigid fixation of the upper and lower points. At the same time, the hole spacing is made as large as possible to minimize the impact of the small gap when the positioning pin and the positioning hole 103 are engaged on the overall positioning accuracy. The larger the spacing, the smaller the angle of the posture deviation of the metal support 1 caused by the same gap, thereby ensuring that the metal support 1 always maintains the verticality, parallelism and other spatial postures consistent with the design benchmark in the mold, providing a stable benchmark for the accurate molding of the plastic body 2.

[0032] In some embodiments, guide positions 201 are provided on both sides of the plastic body 2, and guide members 3 are detachably installed on the guide positions 201. The hardness of the guide members 3 is greater than that of the plastic body 2. When the lifting block is working, it needs to frequently rise and fall along the preset trajectory of the main unit housing. At this time, the guide members 3 on both sides of the plastic body 2, as direct contact parts, will form sliding friction with the plastic limiting structure of the main unit housing. Because the guide component 3 has a higher hardness than the plastic body 2 and significantly higher hardness than the plastic limit of the main body housing, according to the principle of friction and wear, the harder guide component 3 has stronger surface wear resistance and is less prone to surface wear or peeling during sliding. At the same time, the relatively soft plastic limit of the main body housing will not be easily scratched by the high-hardness guide component 3, thus avoiding the abrasion phenomenon caused by direct friction between the two. In addition, the guide component 3 adopts a detachable installation method, such as snap connection or screw fixing, which can be removed and replaced separately after the guide component 3 wears out after long-term use, without replacing the entire plastic body 2. Moreover, the rigid structure of the guide component 3 can provide a more stable guiding effect for the lifting block and avoid the guide deviation caused by the deformation of the plastic body 2 due to its lower hardness during movement.

[0033] Specifically, after the guide member 3 is installed on the plastic body 2, the outer peripheral surface of the guide member 3 is flush with the outer peripheral side surface of the plastic body 2, or the outer peripheral surface of the guide member 3 protrudes from the outer peripheral side surface of the plastic body 2. When the outer peripheral surface of the guide member 3 protrudes from the outer peripheral side surface of the plastic body 2, during the frequent lifting and lowering movements of the lifting block, the guide member 3 will preferentially contact the plastic limiting structure of the main unit housing before the plastic body 2. That is, the high-hardness guide member 3 becomes the only friction contact surface, while the plastic body 2 avoids direct contact with the main unit housing due to the protrusion of the guide member 3, thus eliminating the risk of scratches caused by friction between the plastic body 2 and the housing in space.

[0034] Even though the outer peripheral surface of the guide member 3 is flush with the outer peripheral surface of the side of the plastic body 2, the guide member 3 can still act as a friction replacement layer. Its higher hardness than the plastic body 2 allows it to bear the main friction, reducing the probability of direct wear on the plastic body 2. Simultaneously, the flush design avoids interference with the housing's limiting structure caused by excessive protrusion of the guide member 3. This active isolation mechanism is particularly reliable in designs where the outer peripheral surface of the guide member 3 protrudes. Even if the guide member 3 experiences slight wear after long-term use, it can still maintain its relative position above the plastic body 2, continuously providing protection.

[0035] In addition, the guide position 201 is provided with a plurality of spaced protrusions 202, which contact and limit the inner side of the guide member 3. When the guide member 3 is installed on the guide position 201, the plurality of spaced protrusions 202 serve as direct contact points with the inner side of the guide member 3, replacing the full contact between the guide member 3 and the surface of the guide position 201. This is because if the surface of the guide position 201 has slight unevenness due to injection molding process errors, full contact would cause the guide member 3 to tilt or shift according to the surface shape. However, the plurality of protrusions 202 can form a stable multi-point support reference. As long as the top of each protrusion 202 is on the same plane or a preset positioning surface, even if the surface of other areas of the guide position 201 is uneven, the protrusions 202 can still form a uniform and precise contact with the inner side of the guide member 3, spatially constraining the installation posture of the guide member 3, ensuring that its position and angle meet the design requirements, and avoiding installation skew or positioning deviation caused by surface unevenness.

[0036] Optionally, the guide 3 is adhered to the guide position 201 using an adhesive liquid. During the installation of the guide 3, multiple spaced protrusions 202 first provide a clear multi-point contact reference for the guide 3. When the inner side of the guide 3 is in contact with the top of the protrusion 202, the protrusion 202 can directly constrain the installation posture of the guide 3, preventing the guide 3 from tilting or shifting due to unevenness of the guide position 201 surface, ensuring that the initial installation position of the guide 3 meets the design requirements; subsequently, the applied adhesive liquid (such as epoxy glue, acrylic glue, etc.) can flow fully between the inner side of the guide 3 and the protrusion 202, and in the gaps between the protrusions 202, its The excellent fluidity not only fills the tiny gaps between the protrusions 202 and the inner side of the guide 3, but also covers the surface of the guide positions 201 between the protrusions 202. After the adhesive liquid cures, it forms an adhesive filling layer that combines adhesion and structural support: on the one hand, the adhesive liquid tightly bonds the guide 3 to the protrusions 202 and guide positions 201 through intermolecular forces, forming a connection strength far exceeding that of simple mechanical contact; on the other hand, the cured filling layer can further restrict the lateral and longitudinal displacement of the guide 3, preventing the guide 3 from loosening during lifting and lowering movements. At the same time, the fluidity of the adhesive liquid can adapt to the slight dimensional deviations that may exist at the top of the protrusions 202, ensuring that each protrusion 202 and the inner side of the guide 3 can form an effective bond, avoiding uneven stress caused by localized poor connections.

[0037] It is worth mentioning that the guide component 3 is made of aluminum alloy or stainless steel; and / or the metal support 1 is made of zinc alloy or magnesium alloy. For the guide component 3, both aluminum alloy and stainless steel have higher hardness and better wear resistance than the plastic body 2. Aluminum alloy, while ensuring high hardness, also has the advantage of being lightweight, which can reduce the inertial resistance during the movement of the lifting block; stainless steel, on the basis of high hardness, also has strong corrosion resistance, which can prevent rust caused by environmental humidity or micro-abrasive particles during long-term use. When the lifting block frequently rises and falls, this type of high-hardness guide component 3 can serve as a direct contact part with the plastic limit of the main body housing. Its wear-resistant properties resist sliding friction, making it less prone to surface wear or peeling, while also preventing scratches on the plastic limit of the housing, thus enhancing the anti-scratch effect from a material perspective.

[0038] For the metal support 1, the core advantages of zinc alloy and magnesium alloy lie in their high forming precision and adaptability strength. Zinc alloy possesses excellent casting fluidity and dimensional stability, enabling precise forming of complex structures such as the drawing hole 101 and positioning hole 103, with minimal dimensional error after forming, meeting the precise positioning requirements of the plastic body 2 in the die-casting process. Magnesium alloy, on the other hand, achieves lightweight while ensuring sufficient strength, reducing the load on the drive structure 5. Both can withstand the impact pressure of molten plastic during injection molding and the force during lifting and lowering, preventing the support from warping or deformation and ensuring stable power transmission.

[0039] Furthermore, the metal support 1 is located on one side of the lower part of the plastic body 2, while the other side of the lower part of the plastic body 2 extends downward to form a plastic support 203. The plastic support 203 is mainly used to install magnets, which are used in conjunction with Hall sensors to detect the lifting position. At the same time, the length of the metal support 1 needs to be adapted to the length of the plastic support 203, because the metal support 1 should be made as short as possible to make the structures on both sides of the plastic body 2 as similar as possible. This ensures that the shrinkage speed is more consistent during injection molding and that deformation is less likely to occur.

[0040] On the other hand, an electronic device is also provided, including: a frame 4, a drive structure 5, and the above-mentioned lifting block structure. The lifting block structure is movably mounted on the frame 4, the drive structure 5 is fixedly mounted on the frame 4, and the drive end of the drive structure 5 is connected to the metal support leg 1 to drive the metal support leg 1 to move, thereby driving the plastic body 2 to rise and fall relative to the frame 4.

[0041] In this scheme, frame 4 serves as the core installation reference, providing a fixed and motion constraint foundation for the lifting block structure and drive structure 5. The lifting block structure is movably installed on frame 4 through its own guide 3 and the limiting cooperation of frame 4, ensuring that the lifting block can only move along the longitudinal trajectory set by frame 4 and avoid lateral deviation. Drive structure 5 is fixed to the preset installation position of frame 4, and its drive end is rigidly connected to the metal support 1 of the lifting block structure. When drive structure 5 receives a working signal, the drive end outputs linear power and transmits it to metal support 1. Metal support 1 transmits power without loss based on its own anti-deformation characteristics, and at the same time drives the upper plastic body 2, which is formed by die-cutting and reinforced by the glue hole 101, to move synchronously. Finally, the plastic body 2 and the precision components such as the camera and small screen it carries are stably raised and lowered relative to frame 4. During the process, the positioning hole 103, guide 3, protrusion 202 and other structures of the lifting block further ensure the motion accuracy and stability, and avoid motion jamming caused by component mismatch.

[0042] Specifically, electronic devices can include tablets, smartwatches, smartphones, etc.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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 block structure, characterized in that, include: The metal support (1) and the plastic body (2) formed by injection molding on the upper part of the metal support (1) are provided. The metal support (1) can be used to connect with the drive end of the drive structure (5). The movement of the metal support (1) can drive the plastic body (2) to rise and fall.

2. The lifting block structure according to claim 1, characterized in that, The upper part of the metal support (1) is provided with a rubber-pulling hole (101).

3. The lifting block structure according to claim 1, characterized in that, The upper part of the metal support (1) is also provided with a plurality of adhesive-pulling positions (102), and the cross-section of the adhesive-pulling position (102) is trapezoidal.

4. The lifting block structure according to any one of claims 1-3, characterized in that, The metal support (1) is provided with a positioning hole (103), which can be used for positioning in conjunction with the injection molding equipment.

5. The lifting block structure according to claim 4, characterized in that, There are two positioning holes (103), one of which is located on the upper part of the metal support (1) and the other is located on the lower part of the metal support (1).

6. The lifting block structure according to any one of claims 1-3, characterized in that, The plastic body (2) has guide positions (201) on both sides, and guide parts (3) are detachably installed on the guide positions (201). The hardness of the guide parts (3) is greater than that of the plastic body (2).

7. The lifting block structure according to claim 6, characterized in that, After the guide (3) is installed on the plastic body (2), the outer peripheral surface of the guide (3) is flush with the outer peripheral surface of the side of the plastic body (2), or the outer peripheral surface of the guide (3) protrudes from the outer peripheral surface of the side of the plastic body (2).

8. The lifting block structure according to claim 6, characterized in that, The guide (201) is provided with a plurality of spaced protrusions (202), and the protrusions (202) contact and limit the inner side of the guide (3).

9. The lifting block structure according to claim 6, characterized in that, The guide (3) is attached to the guide position (201) by means of an adhesive liquid.

10. The lifting block structure according to claim 6, characterized in that, The guide (3) is made of aluminum alloy or stainless steel; and / or the metal support (1) is made of zinc alloy or magnesium alloy.

11. An electronic device, characterized in that, include: The frame (4), the drive structure (5), and the lifting block structure as described in any one of claims 1-10, wherein the lifting block structure is movably mounted on the frame (4), the drive structure (5) is fixedly mounted on the frame (4), and the drive end of the drive structure (5) is connected to the metal support (1) to drive the metal support (1) to move, thereby driving the plastic body (2) to rise and fall relative to the frame (4).

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