Hinges for electronic products

Abstract

The present disclosure provides a hinge for an electronic product, comprising a first button, a first cam, a second cam, a third cam, a first elastic member, and a second elastic member. The third cam cooperates with the first cam and the second cam, respectively. The first elastic member cooperates with the first cam, and the second elastic member cooperates with the third cam. When the product is in a closed state, the first cam and the third cam cooperate to generate a pre-compression torque to keep the product closed. Pressing the first button can drive the first cam to move axially to separate the first cam from the third cam. Under the action of the second elastic member, the separated third cam rotates and moves axially under the limitation of the second cam. After releasing the first button, the first cam cooperates with the rotated third cam to drive the product to open. The present disclosure can prevent the product from opening slightly in a closed state. The product can be automatically opened with one click by pressing the first button, making the operation more convenient and quick.

Description

Technical Field

[0001] The present disclosure relates to electronic products, and more particularly to a hinge for electronic products. Background Art

[0002] With the rapid development of science and technology and the continuous progress of society, various electronic products such as smartphones, tablets, learning machines, and game consoles have become essential daily necessities for more and more people in their lives and work. Users have increasingly high requirements for the use of these electronic products, resulting in increasingly diversified functions of electronic products. Many new forms of electronic products have emerged. For example, electronic products can be folded through corresponding hinge mechanisms, which are not only convenient to carry but also provide large-screen displays such as double display when in use. However, the hinge mechanisms of existing foldable electronic products are usually manually operated for folding and opening. They have problems such as inconvenient operation, complex structure, large size, slight opening when closed, low safety and reliability, poor operation feel and comfort, etc., which cannot meet the increasingly high usage needs of users and affect the application and development of products. Summary of the Invention

[0003] The purpose of this disclosure is to provide a hinge for electronic products that can solve at least one of the above technical problems. The technical solution of this disclosure is as follows:

[0004] A hinge for an electronic product comprises a first button, a first cam, a second cam, a third cam, a first elastic member and a second elastic member, the third cam respectively cooperating with the first cam and the second cam, the first elastic member cooperating with the first cam, and the second elastic member cooperating with the third cam. When the product is in a closed state, under the action of the first elastic member, the first cam and the third cam cooperate to generate a pre-compression torque to keep the product closed. Pressing the first button can drive the first cam to move axially to separate the first cam from the third cam. Under the action of the second elastic member, the separated third cam rotates and moves axially under the limitation of the second cam. After releasing the first button, the first cam cooperates with the rotated third cam to drive the product to open.

[0005] In some embodiments, the first cam and the first elastic member are disposed in the first connecting sleeve, the first cam is fixed to the first connecting sleeve in a circumferential direction, and the first cam can slide axially in the first connecting sleeve and elastically deform the first elastic member.

[0006] In some embodiments, the second cam, the third cam and the second elastic member are arranged in the second connecting sleeve, the second cam is fixedly connected to the second connecting sleeve, the third cam and the second connecting sleeve can rotate relative to each other in the circumferential direction, the third cam can slide axially in the second connecting sleeve and elastically deform the second elastic member, the second cam is located at one end of the second connecting sleeve close to the first connecting sleeve, the first button is located at the other end of the second connecting sleeve, the second cam is provided with a first avoidance through hole that cooperates with the first cam, the third cam is provided with a second avoidance through hole that cooperates with the first button, and the second connecting sleeve is provided with a first through hole that cooperates with the first button.

[0007] In some embodiments, the first connecting sleeve and the second connecting sleeve are connected through a first connecting shaft, the first connecting shaft is coaxial with the first connecting sleeve and the second connecting sleeve, the first cam, the second cam, the third cam and the first button are arranged in sequence along the axial direction of the first connecting shaft, one end of the first connecting shaft is provided with a first limit member that cooperates with the first connecting sleeve, and the other end of the first connecting shaft is provided with a second limit member that cooperates with the second connecting sleeve.

[0008] In some embodiments, a first slideway is provided on the first button along its axial direction and cooperates with the second limiting member.

[0009] In some embodiments, a first stopper is provided in the first through hole, the second limit member is pressed against the first stopper, a first slide groove is provided on the first button along its axial direction to cooperate with the first stopper, the first slide groove is connected to the first slideway, and the first slide groove can slide axially along the first stopper.

[0010] In some embodiments, a first pressing portion is provided at an end of the first button away from the second connecting sleeve.

[0011] In some embodiments, the first elastic member and the second elastic member are compression springs, the first cam is provided with a first limiting portion that cooperates with the second cam, and the diameter of the first limiting portion is larger than the diameter of the first avoidance through hole.

[0012] In some embodiments, a first outer cam surface is provided on the first cam, a second outer cam surface and a second inner cam surface cooperating with the first outer cam surface are provided on the third cam, the second inner cam surface is located on the inner side of the second outer cam surface, and a first cam surface cooperating with the second outer cam surface is provided on the second cam. When the product is in a closed state, under the action of the first elastic member, the second inner cam surface cooperates with one side of the first outer cam surface to generate a pre-compression torque to keep the product closed. Pressing the first button can drive the first cam to move axially to separate the first cam from the third cam. Under the action of the second elastic member, the separated third cam rotates and moves axially under the limitation of the second cam. After releasing the first button, the rotated second inner cam surface cooperates with the other side of the first outer cam surface to drive the product to open.

[0013] In some embodiments, the first cam is provided with a first inner cam surface located inside the first outer cam surface, and the first button is provided with a second cam surface that matches the first inner cam surface.

[0014] In addition, in the technical solutions disclosed herein, anything not specifically stated can be implemented by conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 The figure is an exploded view of a hinge for an electronic product according to an embodiment of the present disclosure.

[0017] Figure 2 The figure is a cross-sectional view of a hinge for an electronic product according to an embodiment of the present disclosure.

[0018] Figure 3 This is a schematic structural diagram of a first cam according to an embodiment of the present disclosure.

[0019] Figure 4 This is a structural diagram of a first button according to an embodiment of the present disclosure.

[0020] Figure 5 This is a schematic structural diagram of the first cam and the first button in a closed state according to an embodiment of the present disclosure.

[0021] Figure 6Schematic diagram of the structure of the first cam and the third cam in the closed state according to an embodiment of the present invention.

[0022] Figure 7 Schematic diagram of the structure of the second cam and the third cam in the closed state according to an embodiment of the present invention.

[0023] Figure 8 This is a structural schematic diagram of the first cam and the third cam in the separated state according to an embodiment of the present invention.

[0024] Figure 9 This is a schematic structural diagram of the first cam and the third cam in the closed state according to an embodiment of the present invention.

[0025] Figure 10 Schematic diagram of the structure of the second cam and the third cam in the open state according to an embodiment of the present invention.

[0026] Figure 11 This is a structural schematic diagram of the first cam and the first button in the open state according to an embodiment of the present disclosure.

[0027] The numbers in the accompanying drawings are as follows: first button 1, first slide 11, first slide groove 12, first pressing portion 13, second cam surface 14, first cam 2, first outer cam surface 21, first inner cam surface 22, first limiting portion 23, second cam 3, first avoidance through hole 31, first cam surface 32, third cam 4, second avoidance through hole 41, second outer cam surface 42, second inner cam surface 43, first elastic member 5, second elastic member 6, first connecting sleeve 7, second connecting sleeve 8, first through hole 81, first stop block 82, first connecting shaft 9, first limiting member 91, second limiting member 92. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present disclosure, rather than all of the embodiments, and are only used to explain the present disclosure and are not intended to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0029] In the description of the present disclosure, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "two ends", "both sides", "bottom", "top", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary", etc. are used for descriptive purposes only and can be simply used to more clearly distinguish different components, but cannot be understood as indicating or implying relative importance.

[0030] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0031] See also Figures 1 to 11The figure schematically shows a hinge for an electronic product according to the present disclosure, which is mainly used to achieve the folding and opening of the electronic product. The hinge for an electronic product according to the present disclosure includes a first button 1, a first cam 2, a second cam 3, a third cam 4, a first elastic member 5 and a second elastic member 6. The third cam 4 cooperates with the first cam 2 and the second cam 3 respectively. The first elastic member 5 cooperates with the first cam 2, and the second elastic member 6 cooperates with the third cam 4. That is, under the action of the first elastic member 5 and the second elastic member 6, the first cam 2 and the third cam 4 elastically interact with each other, and the third cam 4 and the second cam 3 also elastically interact with each other. Usually, the second cam 3 is relatively fixed, and the second cam 3 limits the third cam 4. The third cam 4 can rotate relative to the second cam 3. When the product is in the closed state, under the action of the first elastic member 5, the first cam 2 cooperates with the third cam 4, thereby generating a pre-compression torque to keep the product closed, that is, the direction of the pre-compression torque is consistent with the direction of product closing; when the first button 1 is pressed, the first button 1 drives the first cam 2 to move axially, so that the first cam 2 is separated from the third cam 4. Under the action of the second elastic member 6, the separated third cam 4 rotates and moves axially under the limitation of the second cam 3. After releasing the first button 1, the first cam 2 and the rotated third cam 4 are re-matched. At this time, the direction of the torque generated is consistent with the direction of product opening. Under the action of the first elastic member 5 and the limitation of the third cam 4, the first cam 2 rotates relative to the third cam 4, thereby driving the product to open.

[0032] A first pressing portion 13 is provided at one end of the first button 1 . The shape and size of the first pressing portion 13 depend on specific circumstances, such as a circle or other suitable shape.

[0033] When in use, the first cam 2 is arranged on the first housing of the product, and the third cam 4 is arranged on the second housing of the product. The first cam 2 and the first housing rotate relative to the second housing to open and close, so that the product is opened and folded closed. The first pressing portion 13 of the first button 1 can extend outside the first housing and the second housing for easy operation. When the product is in the folded closed state, Figures 5-7 As shown, under the action of the first elastic member 5, the first cam 2 interacts with the third cam 4, thereby generating a pre-compression torque to keep the product closed, that is, the direction of the pre-compression torque is consistent with the direction of product closing, which can prevent the product from being damaged by a slight opening in the closed state, etc., with high safety, stability and reliability, and improved service life. When the product needs to be opened, the first button 1 is pressed, and the first button 1 drives the first cam 2 to move axially, so that the first cam 2 is separated from the third cam 4, as shown in FIG. Figure 8As shown, the pre-compression torque that keeps the product closed is released. Under the action of the second elastic member 6, the second cam 3 limits the third cam 4, so that the separated third cam 4 rotates and moves axially. After releasing the first button 1, the first cam 2 and the rotated third cam 4 are re-matched. At this time, the direction of the torque generated is consistent with the direction of opening the product, thereby realizing the conversion of the torque direction from the direction of keeping the product closed to the direction of opening the product. Under the action of the first elastic member 5 and the limitation of the third cam 4, the first cam 2 rotates relative to the third cam 4, as shown in FIG. Figures 9-11 As shown, the product can be driven to open and refolded and closed manually. The product can be automatically opened with one click by pressing the first button 1. The operation is more convenient and quick, and the operation feel and comfort are better, which can meet the user's increasingly high usage needs.

[0034] The first cam 2 is provided with a first outer cam surface 21, the third cam 4 is provided with a second outer cam surface 42 and a second inner cam surface 43 that matches the first outer cam surface 21, the second inner cam surface 43 is located on the inner side of the second outer cam surface 42, the second cam 3 is provided with a first cam surface 32 that matches the second outer cam surface 42, the first outer cam surface 21 has two convex portions in opposite directions, and the two convex portions are located on both sides of the first outer cam surface 21. When the product is in the closed state, as shown in FIG. Figures 5-7 As shown, under the action of the first elastic member 5, the second inner cam surface 43 cooperates with the convex portion on one side of the first outer cam surface 21, thereby generating a pre-compression torque to keep the product closed, that is, the direction of the pre-compression torque is consistent with the direction of product closing; when the product needs to be opened, the first button 1 is pressed first to drive the first cam 2 to move axially, so that the first cam 2 is separated from the third cam 4, as shown in FIG. Figure 8 As shown, the second inner cam surface 43 is separated from the convex portion on one side of the first outer cam surface 21. Under the action of the second elastic member 6, the second cam 3 limits the third cam 4, so that the separated third cam 4 rotates and moves axially. The separated third cam 4 rotates and moves axially under the limitation of the second cam 3, and the second inner cam surface 43 rotates synchronously with the third cam 4. The second inner cam surface 43 rotates to a position corresponding to the convex portion on the other side of the first outer cam surface 21. After releasing the first button 1, the rotated second inner cam surface 43 cooperates with the convex portion on the other side of the first outer cam surface 21. The direction of the torque generated at this time is consistent with the direction of opening the product, thereby realizing the conversion of the torque direction from the direction of keeping the product closed to the direction of opening the product. Under the action of the first elastic member 5 and the limitation of the third cam 4, the first cam 2 rotates relative to the third cam 4, thereby driving the product to open. Figures 9-11 shown.

[0035] The first cam 2 is provided with a first inner cam surface 22 located inside the first outer cam surface 21, and the first button 1 is provided with a second cam surface 14 that cooperates with the first inner cam surface 22. When opening the product, after pressing and releasing the first button 1, the direction of the torque is converted from the direction of keeping the product closed to the direction of opening the product. Under the action of the first elastic member 5 and the limitation of the third cam 4, the first cam 2 rotates relative to the third cam 4. At the same time, the first inner cam surface 22 of the first cam 2 cooperates with the second cam surface 14 of the first button 1, thereby driving the product to open more stably and reliably.

[0036] The first cam 2 and the first elastic member 5 are arranged in the first connecting sleeve 7. The first cam 2 is fixed to the first connecting sleeve 7 in the circumferential direction. The first cam 2 can slide axially in the first connecting sleeve 7, and the axial sliding of the first cam 2 can elastically deform the first elastic member 5. The first connecting sleeve 7 is used to be fixedly connected to the first housing of the product, such as by a plug-in connection method, and the first housing and the first connecting sleeve 7 are fixed in the circumferential direction through a flat structure. It can also be fixed or welded by fasteners such as pins and screws.

[0037] The second cam 3, the third cam 4 and the second elastic member 6 are arranged in the second connecting sleeve 8. The second cam 3 is fixedly connected to the second connecting sleeve 8, for example, by using fasteners such as pins and screws for fixed connection or welding connection, the third cam 4 and the second connecting sleeve 8 can rotate relative to each other in the circumferential direction, and the third cam 4 can also slide axially along the second connecting sleeve 8, and the axial sliding of the third cam 4 can elastically deform the second elastic member 6. The second cam 3 is located at one end of the second connecting sleeve 8 close to the first connecting sleeve 7, and the first button 1 is located at the other end of the second connecting sleeve 8, which is convenient for operating the first button 1. The second cam 3 is provided with a first avoidance hole 31 for cooperating with the first cam 2, the third cam 4 is provided with a second avoidance hole 41 for cooperating with the first button 1, and the second connecting sleeve 8 is provided with a first through hole 81 for cooperating with the first button 1. The first cam 2 can pass through the first avoidance hole 31 to cooperate with the third cam 4 and the first button 1, and the first button 1 can pass through the first through hole 81 and the second avoidance hole 41 to cooperate with the first cam 2. The first pressing portion 13 of the first button 1 extends outside the corresponding first and second housings, resulting in a more compact, stable, and compact structure. The first pressing portion 13 is located at the end of the first button 1 away from the second connecting sleeve 8. The second connecting sleeve 8 is used to be fixedly connected to the second housing of the product, for example, using a plug-in connection method, and the second housing and the second connecting sleeve 8 are fixed in the circumferential direction by a flat structure. Alternatively, fasteners such as pins and screws can be used for fixed connection or welding. The first cam 2 and the first housing rotate together relative to the second housing to open and close, allowing the product to be opened and folded closed.

[0038] The first connecting sleeve 7 and the second connecting sleeve 8 are connected by a first connecting shaft 9, which is coaxial with the first connecting sleeve 7 and the second connecting sleeve 8. The first cam 2, the second cam 3, the third cam 4 and the first button 1 are arranged in sequence along the axial direction of the first connecting shaft 9. One end of the first connecting shaft 9 is provided with a first limiter 91 that cooperates with the first connecting sleeve 7, and the other end of the first connecting shaft 9 is provided with a second limiter 92 that cooperates with the second connecting sleeve 8. The first limiter 91 can be a shaft elastic circlip, a lock nut, etc., and the second limiter 92 can be a elastic circlip, a lock nut, a shaft shoulder or a flange, etc., which makes the structure more stable and reliable and more convenient to operate. The first cam 2, the second cam 3 and the third cam 4 are also coaxial with the first connecting shaft 9, and the first cam 2 is provided with a through hole for the first connecting shaft 9 to pass through. The first elastic member 5 and the second elastic member 6 are compression springs. The first elastic member 5, the first cam 2, the second cam 3, the third cam 4, the second elastic member 6 and the first button 1 are sequentially arranged along the axial direction of the first connecting shaft 9. The first elastic member 5 and the first cam 2 are arranged in the first connecting sleeve 7, and the second cam 3, the third cam 4 and the second elastic member 6 are arranged in the second connecting sleeve 8. One end of the first elastic member 5 presses against the inner wall of the first connecting sleeve 7, the other end of the first elastic member 5 presses against the first cam 2, and one end of the second elastic member 6 presses against the second connecting sleeve 8, a groove body, a positioning column and other positioning structures that cooperate with the spring can also be provided on the inner wall of the first cam 2 and the third cam 4 and in the second connecting sleeve 8. The other end of the second elastic member 6 is pressed against the third cam 4. The second cam 3 is provided with a first avoidance through hole 31 that cooperates with the first cam 2, and the third cam 4 is provided with a second avoidance through hole 41 that cooperates with the first button 1. The second connecting sleeve 8 is provided with a first through hole 81 that cooperates with the first button 1, and the first pressing portion 13 of the first button 1 extends out of the corresponding first housing and second housing.

[0039] The ends of the first connecting sleeve 7 and the second connecting sleeve 8 that are close to each other can be clearance-fitted, for example, with an appropriate gap. This will not affect the torque value of the structure, and can also avoid noise, wear, etc. during the process of rotating to open and close the product.

[0040] The first cam 2 is also provided with a first limiting portion 23 that cooperates with the second cam 3. The diameter of the first limiting portion 23 is larger than the diameter of the first avoidance through hole 31, which can limit the axial sliding distance of the first cam 2, etc., making it safer and more reliable.

[0041] A first slide 11 cooperating with the second limiter 92 is provided on the first button 1 along its axial direction. When the first button 1 is pressed, the first slide 11 of the first button 1 slides along the second limiter 92, which provides better operating feel and comfort, and is more stable and reliable.

[0042] A first stopper 82 is provided in the first through hole 81, and a second limiting member 92 is pressed against the first stopper 82 for limiting. A first slide groove 12 cooperating with the first stopper 82 is provided on the first button 1 along its axial direction. The first slide groove 12 is connected with the first slideway 11. When the first button 1 is pressed, the first slideway 11 of the first button 1 slides along the second limiting member 92, and at the same time, the first slide groove 12 slides axially along the first stopper 82. The structure is simpler, more compact and more stable, which can prevent the first button 1 from rotating, etc., and is more stable and reliable.

[0043] Compared with the prior art, the advantages of the present invention are as follows: when the product is in a folded and closed state, under the action of the first elastic member 5, the first cam 2 interacts with the third cam 4 to generate a pre-compression torque to keep the product closed, that is, the direction of the pre-compression torque is consistent with the direction of product closing, which can prevent the product from being slightly opened in the closed state and damaging the product, etc. By pressing the first button, the first button can realize the conversion of the torque direction from the direction of keeping the product closed to the direction of product opening through the cam mechanism, so that the product can be automatically opened with one click through the first button 1, the first slide 11 of the first button 1 slides along the second limit member 92, and the first slide groove 12 slides axially along the first stop block 82, which can prevent the first button 1 from rotating, etc., the operating feel and comfort are better, the structure is simple, compact and stable, the size is small, the operation is convenient and fast, the safety, stability and reliability are high, the service life is long, the competitiveness of the product is increased, and it can better meet people's increasingly high usage needs and expand the application and development of the product.

[0044] The above descriptions are merely some embodiments of the present disclosure and are intended to illustrate the technical solutions of the present disclosure, not to limit them. It should be understood that those skilled in the art may make modifications or substitutions based on the above descriptions without departing from the inventive concept of the present disclosure, and all such modifications and substitutions shall fall within the scope of protection of the appended claims of the present disclosure. In such cases, all details may be replaced with equivalent elements, and the materials, shapes, and dimensions may be arbitrary.

Claims

1. A hinge for electronic products, characterized in that: The invention comprises a first button (1), a first cam (2), a second cam (3), a third cam (4), a first elastic member (5) and a second elastic member (6), wherein the third cam (4) cooperates with the first cam (2) and the second cam (3) respectively, the first elastic member (5) cooperates with the first cam (2), and the second elastic member (6) cooperates with the third cam (4). When the product is in a closed state, under the action of the first elastic member (5), the first cam (2) and the third cam (4) cooperate to generate a pre-compression torque to keep the product closed. Pressing the first button (1) can drive the first cam (2) to move axially so that the first cam (2) and the third cam (4) are separated. Under the action of the second elastic member (6), the separated third cam (4) rotates and moves axially under the limitation of the second cam (3). After releasing the first button (1), the first cam (2) cooperates with the rotated third cam (4) to drive the product to open. The first cam (2) and the first elastic member (5) are arranged in the first connecting sleeve (7); The first cam (2) is provided with a first outer cam surface (21), the third cam (4) is provided with a second outer cam surface (42) and a second inner cam surface (43) that matches the first outer cam surface (21), the second inner cam surface (43) is located on the inner side of the second outer cam surface (42), and the second cam (3) is provided with a first cam surface (32) that matches the second outer cam surface (42); The second cam (3) is provided with a first avoidance through hole (31) that cooperates with the first cam (2), and the third cam (4) is provided with a second avoidance through hole (41) that cooperates with the first button (1); The first cam (2) is fixed to the first connecting sleeve (7) in a circumferential direction, and the first cam (2) is capable of sliding axially within the first connecting sleeve (7) and causing the first elastic member (5) to elastically deform; The second cam (3), the third cam (4) and the second elastic member (6) are arranged in the second connecting sleeve (8); the second cam (3) is fixedly connected to the second connecting sleeve (8); the third cam (4) and the second connecting sleeve (8) can rotate relative to each other in the circumferential direction; the third cam (4) can slide axially in the second connecting sleeve (8) and elastically deform the second elastic member (6); the second cam (3) is located at one end of the second connecting sleeve (8) close to the first connecting sleeve (7); and the first button (1) is located at the other end of the second connecting sleeve (8); The first connecting sleeve (7) and the second connecting sleeve (8) are clearance-fitted at their ends close to each other; The first connecting sleeve (7) and the second connecting sleeve (8) are connected via a first connecting shaft (9); the first connecting shaft (9) is coaxial with the first connecting sleeve (7) and the second connecting sleeve (8); the first cam (2), the second cam (3), the third cam (4) and the first button (1) are sequentially arranged along the axial direction of the first connecting shaft (9); and the other end of the first connecting shaft (9) is provided with a second limiting member (92) that cooperates with the second connecting sleeve (8); The first button (1) is provided with a first slideway (11) along its axial direction, which is matched with the second limiting member (92); The second connecting sleeve (8) is provided with a first through hole (81) that matches the first button (1), a first stopper (82) is provided in the first through hole (81), and the second limiting member (92) is pressed against the first stopper (82); A first pressing portion (13) is provided at one end of the first button (1) away from the second connecting sleeve (8); The first elastic member (5) and the second elastic member (6) are compression springs. The first cam (2) is provided with a first limiting portion (23) that matches the second cam (3). The diameter of the first limiting portion (23) is larger than the diameter of the first avoidance through hole (31).

2. The hinge for electronic products according to claim 1, characterized in that: When the product is in a closed state, under the action of the first elastic member (5), the second inner cam surface (43) cooperates with one side of the first outer cam surface (21) to generate a pre-compression torque to keep the product closed. After releasing the first button (1), the rotated second inner cam surface (43) cooperates with the other side of the first outer cam surface (21) to drive the product to open.

3. The hinge for electronic products according to claim 2, characterized in that: The first cam (2) is provided with a first inner cam surface (22) located inside the first outer cam surface (21), and the first button (1) is provided with a second cam surface (14) that matches the first inner cam surface (22).

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