A hinge for electronic products

Abstract

This disclosure provides a hinge for electronic products, including a first button, a fourth elastic element, a fourth cam, a third cam, a first cam, and a first elastic element. The first elastic element cooperates with the first cam, the fourth elastic element cooperates with the first button, the first cam cooperates with the fourth cam, and the fourth cam has a first slot that cooperates with the third cam. When the fourth cam is fixed, the third cam cooperates with the first slot to fix the third cam in the closed state. The cooperation between the first cam and the third cam generates a preload torque to keep the product closed. Pressing the first button pushes the third cam to move axially, causing the third cam to separate from the first slot. The cooperation between the first cam and the fourth cam allows the product to open. This disclosure allows the product to be opened automatically with a single button press, making operation more convenient and faster, improving the user experience and comfort, and meeting the increasingly higher demands of users.

Description

Technical Field

[0001] This disclosure relates to electronic products, and more particularly to a hinge for electronic products. Background Technology

[0002] With the rapid development of technology and the continuous progress of society, smartphones, tablets, educational devices, game consoles, and other electronic products have become essential items in the lives and work of more and more people. Users have increasingly higher demands for these electronic products, leading to a diversification of their functions and the emergence of many new forms of electronic products. For example, some products use hinge mechanisms to allow them to fold, making them convenient to carry while providing a larger screen for double-display functionality. However, existing hinge mechanisms for foldable electronic products typically require manual operation for folding and opening, resulting in inconvenience, complex structures, large size, slight opening when closed, low safety and reliability, and poor user experience and comfort. These issues fail to meet the increasingly demanding needs of users, hindering the application and development of these 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-mentioned technical problems. The technical solution of this disclosure is as follows:

[0004] A hinge for electronic products includes a first button, a fourth elastic element, a fourth cam, a third cam, a first cam, and a first elastic element. The first elastic element cooperates with the first cam, and the fourth elastic element cooperates with the first button. The first cam can cooperate with the fourth cam. The fourth cam is provided with a first slot that cooperates with the third cam. When the product is closed, under the action of the first elastic element, the third cam cooperates with the first slot to fix the third cam. The cooperation of the first cam and the third cam generates a preload torque to keep the product closed. Pressing the first button can push the third cam to move axially and separate the third cam from the first slot. Pressing the first button can also cause the fourth elastic element to elastically deform. After releasing the first button, the fourth elastic element can push the first button to reset. Under the action of the first elastic element, the cooperation of the first cam and the fourth cam can open the product. At the same time, the first cam can also drive the third cam to rotate.

[0005] In some embodiments, the first cam is provided with a first outer cam surface and a first inner cam surface, the third cam is provided with a third cam surface that cooperates with the first inner cam surface, and the fourth cam is provided with a fourth cam surface that cooperates with the first outer cam surface.

[0006] In some embodiments, a second cam is provided between the first cam and the third cam, and a third elastic element is provided between the second cam and the third cam. The second cam is provided with a first cam surface that cooperates with the first inner cam surface and a second cam surface that cooperates with the third cam surface. The second cam and the third cam are fixed in the circumferential direction and can slide relative to each other in the axial direction. The axial force of the first elastic element is greater than the axial force of the third elastic element. Pressing the first button can push the third cam to move axially so that the third cam separates from the first slot. At the same time, both the fourth elastic element and the third elastic element are elastically deformed. After releasing the first button and opening the product, the third cam can rotate to the position corresponding to the first slot. The third elastic element can drive the third cam to slide axially so that the third cam can cooperate with the first slot again.

[0007] In some embodiments, the fourth cam is provided with a first slide groove, the first button is provided with a first pushing part and a first sliding part that cooperates with the first slide groove, the bottom surface of the first slide groove is provided with a first through hole, the first through hole communicates with the first slot, one end of the first pushing part can pass through the first through hole and cooperate with the third cam, and the end of the first pushing part near the third cam is provided with a first limiting part that extends out of the first through hole. Under the action of the fourth elastic member, the first limiting part presses against the fourth cam.

[0008] In some embodiments, the fourth elastic element is a compression spring, which is located between the first button and the fourth cam. One end of the fourth elastic element presses against the bottom surface of the first slide groove, and the other end of the fourth elastic element presses against one end of the first sliding part. One end of the first sliding part is provided with a first groove that cooperates with the fourth elastic element, and the end of the first button away from the fourth cam is also provided with a first pressing part.

[0009] In some embodiments, the first cam and the first elastic element are disposed inside the first connecting sleeve. The first cam is fixed in the circumferential direction and coaxial with the first connecting sleeve. The first cam can slide along the axial direction inside the first connecting sleeve and cause the first elastic element to elastically deform. One end opening of the first connecting sleeve can avoid the third cam and the fourth cam.

[0010] In some embodiments, a second sliding portion is provided on the outer side of the first cam along its axial direction, and a second sliding groove is provided inside the first connecting sleeve to cooperate with the second sliding portion.

[0011] In some embodiments, the first cam, the third cam, and the fourth cam are sequentially disposed on the first connecting shaft. The first connecting shaft is coaxial with the first cam, the third cam, and the fourth cam. The end of the first connecting sleeve away from the third cam is provided with a second through hole that cooperates with the first connecting shaft. One end of the first connecting shaft is provided with a first limiting member that cooperates with the first connecting sleeve, and the other end of the first connecting shaft is provided with a second limiting member that cooperates with the fourth cam.

[0012] In some embodiments, the first elastic element is a compression spring sleeved on the first connecting shaft. The first elastic element, the first cam, the third cam and the fourth cam are arranged sequentially along the axial direction of the first connecting shaft. One end of the first elastic element presses against one axial end of the first cam, and the other end of the first elastic element presses against the inner wall of the first connecting sleeve.

[0013] In some embodiments, a second elastic element is further provided inside the first elastic element. The second elastic element is a compression spring sleeved on the first connecting shaft. One end of the second elastic element presses against one axial end of the first cam, and the other end of the first elastic element presses against the inner wall of the first connecting sleeve. A first positioning post that cooperates with the first elastic element is provided on the first cam, and one end of the first elastic element is sleeved on the first positioning post.

[0014] Furthermore, unless otherwise specified in this disclosure, all technical solutions can be implemented using conventional methods in the field. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this disclosure or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

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

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

[0018] Figure 3 This is a partial structural diagram of an electronic product according to one embodiment of the present disclosure.

[0019] Figure 4 This is a schematic diagram of the structure of the first button according to one embodiment of the present disclosure.

[0020] Figure 5 This is a schematic diagram of the structure of the third cam according to one embodiment of the present disclosure.

[0021] Figure 6 This is a cross-sectional view of the fourth cam according to one embodiment of the present disclosure.

[0022] Figure 7 This is a schematic diagram of the structure of the second cam according to one embodiment of the present disclosure.

[0023] The reference numerals in the attached diagram are as follows: First button 1, Fourth elastic element 11, First sliding part 12, First groove 121, First pushing part 13, First limiting part 14, First pressing part 15, First clearance through hole 16, First cam 2, First elastic element 21, First outer cam surface 22, First inner cam surface 23, Second sliding part 24, First positioning post 25, Second elastic element 26, Third cam 3, Third cam surface 31, Fourth cam 4, First slot 41, Fourth cam surface 42, First slide groove 43, First through hole 44, Second cam 5, Third elastic element 51, First cam surface 52, Second cam surface 53, First connecting sleeve 6, Second through hole 61, Second slide groove 62, First connecting shaft 7, First limiting element 71, Second limiting element 72. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this disclosure, and are used merely to explain this disclosure and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0025] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this disclosure. Furthermore, the terms "first," "second," "upper-level," "lower-level," "primary," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0026] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0027] See Figures 1-7The diagram schematically illustrates a hinge for electronic products according to this disclosure, primarily used for folding and opening electronic products. The hinge includes a first button 1, a fourth elastic element 11, a fourth cam 4, a third cam 3, a first cam 2, and a first elastic element 21. The first elastic element 21 engages with the first cam 2, the fourth elastic element 11 engages with the first button 1, the first cam 2 engages with the third cam 3, and the first cam 2 can also engage with the fourth cam 4. The fourth cam 4 is provided with a first slot 41 that engages with the third cam 3. The fourth cam 4 is fixed in place, and the engagement of the third cam 3 with the first slot 41 fixes the third cam 3. When the product is closed, under the action of the first elastic element 21, the third cam 3 engages with the first slot 41, fixing the third cam 3. Simultaneously, the engagement of the first cam 2 and the third cam 3 generates a preload torque to maintain the product's closure; that is, the direction of the preload torque is consistent with the direction of product closure. When the first button 1 is pressed, the first button 1 drives the third cam 3 to move axially, causing the third cam 3 to separate from the first slot 41. At this time, the third cam 3 can rotate. At the same time, pressing the first button 1 can cause the fourth elastic element 11 to deform elastically. After the first button 1 is released, under the action of the first elastic element 21, the first cam 2 and the fourth cam 4 cooperate, and the fourth cam 4 is fixed. The direction of the torque generated at this time is consistent with the direction of product opening, causing the first cam 2 to rotate along the fourth cam 4 to drive the product to open. The rotation of the first cam 2 can also drive the third cam 3 to rotate, and the fourth elastic element 11 can also push the first button 1 to reset.

[0028] The first button 1 is also provided with a first pressing part 15 at the end away from the fourth cam 4. The shape and size of the first pressing part 15 are determined according to the specific situation, such as a circle or other suitable shape, which makes operation more convenient.

[0029] In use, the first cam 2 is mounted on the first housing of the product, and the fourth cam 4 is fixed on the second housing of the product. The first cam 2 and the first housing rotate together relative to the fourth cam 4 and the second housing to open and close, allowing the product to open and fold. The first pressing part 15 of the first button 1 can extend outside the first and second housings for easy pressing of the first button 1. When the product is folded and closed, under the action of the first elastic element 21, the third cam 3 cooperates with the first slot 41 to fix the third cam 3. At the same time, the first cam 2 and the third cam 3 cooperate 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 closure, which can prevent the product from being damaged by slight opening when the product is closed, etc., resulting in high safety, stability and reliability, and improved service life. When it is necessary to open the product, the first button 1 is activated. The third cam 3 moves axially, separating it from the first slot 41, thus releasing the pre-compression torque that keeps the product closed. At this point, the third cam 3 can rotate. Simultaneously, pressing the first button 1 causes the fourth elastic element 11 to elastically deform. After releasing the first button 1, under the action of the first elastic element 21, the first cam 2 and the fourth cam 4 engage. Since the fourth cam 4 is fixed, the torque generated at this time is in the same direction as the product opening direction, causing the first cam 2 to move axially and rotate along the fourth cam 4, thereby driving the product to open. At the same time, the fourth elastic element 11 pushes the first button 1 to reset, and the rotation of the first cam 2 also drives the third cam 3 to rotate. The product can be manually folded and closed, or it can be automatically opened with one click using the first button 1. The operation is more convenient and faster, with better feel and comfort, meeting the increasingly higher usage needs of users.

[0030] The first cam 2 is provided with a first outer cam surface 22 and a first inner cam surface 23, the third cam 3 is provided with a third cam surface 31 that cooperates with the first inner cam surface 23, and the fourth cam 4 is provided with a fourth cam surface 42 that cooperates with the first outer cam surface 22. When the product is folded and closed, under the action of the first elastic element 21, the third cam 3 engages with the first slot 41, fixing the third cam 3. Simultaneously, the first inner cam surface 23 of the first cam 2 engages with the third cam surface 31 of the third cam 3, generating a pre-compression torque to keep the product closed. This pre-compression torque is aligned with the direction of product closure, preventing damage from slight opening when the product is closed. This ensures high safety, stability, and reliability, and extends service life. When the product needs to be opened, pressing the first button 1 drives the third cam 3 to move axially, separating it from the first slot 41, thus releasing the pre-compression torque. The third cam 3 can then rotate. Pressing the first button 1 causes the fourth elastic element 11 to elastically deform. Releasing the first button 1, under the action of the first elastic element 21, causes the first outer cam surface 22 of the first cam 2 to engage with the fourth cam surface 42 of the fourth cam 4. With cam 4 fixed in place, the torque generated is directed in the same direction as the product opening, causing the first cam 2 to move axially and rotate along the fourth cam 4. The first outer cam surface 22 and the fourth cam surface 42 can move uphill and then downhill, so that the first housing of the product can automatically open after it is opened to a certain angle (i.e., after the first cam 2 rotates to a certain angle). At the same time, the fourth elastic element 11 pushes the first button 1 to reset. The first inner cam surface 23 of the first cam 2 cooperates with the third cam surface 31 of the third cam 3. The rotation of the first cam 2 also drives the rotation of the third cam 3. Similarly, when the product is manually closed, the first outer cam surface 22 and the fourth cam surface 42 also move uphill and then downhill. After the first housing of the product is manually closed to a certain angle (i.e., after the first cam 2 rotates to a certain angle), it can automatically close. The structure is compact, stable, and reliable, and the operation is more convenient, faster, and less strenuous. The operation feel and comfort are better, and it can better meet people's increasingly higher usage needs.

[0031] A second cam 5 is provided between the first cam 2 and the third cam 3. The third cam 5 passes through the second cam. A third elastic element 51 is provided between the second cam 5 and the third cam 3. The second cam 5 is provided with a first cam surface 52 that cooperates with the first inner cam surface 23 and a second cam surface 53 that cooperates with the third cam surface 31. The second cam 5 and the third cam 3 are fixed in the circumferential direction, that is, the second cam 5 and the third cam 3 rotate synchronously together, and the second cam 5 and the third cam 3 can slide relative to each other in the axial direction. The axial force of the first elastic element 21 is greater than the axial force of the third elastic element 51. Pressing the first button 1 causes the third cam 3 to move axially, separating it from the first slot 41. Simultaneously, the third elastic element 51 and the fourth elastic element 11 undergo elastic deformation. Since the axial force of the first elastic element 21 is greater than that of the third elastic element 51, the second cam 5 and the first cam 2 remain stationary, resulting in less effort and a better operating feel. Releasing the first button 1 causes the first cam 2 to rotate, also driving the third cam 3 to rotate. When the product is fully opened, the third cam 3 rotates back to the position corresponding to the first slot 41, for example, by rotating 180°. The third elastic element 51 then drives the third cam 3 to slide axially, allowing it to re-engage with the first slot 41, thus re-fixing the third cam 3 and ensuring greater stability and reliability when the product is open. The third elastic element 51 can be a compression spring. One end of the third elastic element 51 presses against the third cam 3, and the other end of the third elastic element 51 presses against the second cam 5. The second cam 5 and the third cam 3 are respectively provided with positioning pins or positioning grooves that cooperate with the third elastic element 51.

[0032] The fourth cam 4 is provided with a first slide groove 43, and the first button 1 is provided with a first pushing part 13 and a first sliding part 12 that cooperates with the first slide groove 43. The first sliding part 12 can slide along the first slide groove 43. The bottom surface of the first slide groove 43 is provided with a first through hole 44, which communicates with the first slot 41. One end of the first pushing part 13 can pass through the first through hole 44 and cooperate with the third cam 3. The end of the first pushing part 13 near the third cam 3 is provided with a first limiting part 14 that extends out of the first through hole 44. When the product is closed, under the action of the fourth elastic member 11, the first limiting part 14 presses against the fourth cam 4. Under the limitation of the fourth elastic member 11 and the first limiting part 14, the first button 1 and the fourth cam 4 are prevented from separating. When the first button 1 is pressed, the first sliding part 12 slides along the first slide groove 43, and one end of the first pushing part 13 passes through the first through hole 44 to push the third cam 3 to move axially. At the same time, the fourth elastic member 11 elastically deforms, making the structure more compact and stable. The number, shape, and size of the first sliding part 12, the first sliding groove 43, the first pushing part 13, the first through hole 44, and the first limiting part 14 are determined according to the specific situation. The first limiting part 14 can be a protrusion, a buckle, etc., and the first sliding part 12 can be one, two, or more.

[0033] The fourth elastic element 41 is a compression spring, and the fourth elastic element 11 is located between the first button 1 and the fourth cam 4. One end of the fourth elastic element 11 presses against the bottom surface of the first slide groove 43, and the other end of the fourth elastic element 11 presses against one end of the first sliding part 12. One end of the first sliding part 12 is provided with a first groove 121 that cooperates with the fourth elastic element 11. The structure is more compact and stable, the volume is reduced, and the operation is more convenient. There can be two symmetrically arranged first sliding parts 12, and the fourth elastic element 11 can be sleeved on the first sliding part 12.

[0034] The first cam 2 and the first elastic element 21 are disposed inside the first connecting sleeve 6. The first connecting sleeve 6 can be fixedly disposed on the first housing of the product. The first cam 2 and the first connecting sleeve 6 are fixed in the circumferential direction and coaxial, that is, the first cam 2 and the first connecting sleeve 6 rotate synchronously together, and the first cam 2 can slide along the inner axis of the first connecting sleeve 6. The axial movement of the first cam 2 can cause the first elastic element 21 to elastically deform. One end of the first connecting sleeve 6 is open, and the open end of the first connecting sleeve 6 is used to avoid the third cam 3 and the fourth cam 4.

[0035] A second sliding portion 24 is provided on the outer side of the first cam 2 along its axial direction. A second sliding groove 62 is provided inside the first connecting sleeve 6 to cooperate with the second sliding portion 24. The cooperation between the second sliding portion 24 and the second sliding groove 62 fixes the first cam 2 and the first connecting sleeve 6 in the circumferential direction. The number, shape, and size of the second sliding portion 24 and the second sliding groove 62 are determined according to the specific situation. There can be one, two, or more second sliding portions 24 and second sliding grooves 62.

[0036] The first cam 2, second cam 5, third cam 3, and fourth cam 4 are sequentially mounted on the first connecting shaft 7. Each of the first cams 2, 5, 3, and 4 has a connecting hole for connection with the first connecting shaft 7. The first connecting shaft 7 is coaxial with the first cams 2, 5, 3, and 4. The end of the first connecting sleeve 6 furthest from the third cam 3 has a second through hole 61 that mates with the first connecting shaft 7. One end of the first connecting shaft 7 has a first limiting member 71 that mates with the first connecting sleeve 6, and the other end has a second limiting member 72 that mates with the fourth cam 4. The first and second limiting members 71 and 72 axially fix the first connecting shaft 7. The first limiting member 71 can be a shaft elastic retaining ring, a lock nut, etc., and the second limiting member 72 can be an elastic retaining ring, a lock nut, a shoulder, or a flange, etc., resulting in a more stable and reliable structure and easier operation. The first button 1 can have a first clearance through hole 16 that mates with the second limiting member 72, resulting in a compact and stable structure.

[0037] The first elastic element 21 is a compression spring sleeved on the first connecting shaft 7. The first elastic element 21, the first cam 2, the third cam 3 and the fourth cam 4 are arranged sequentially along the axial direction of the first connecting shaft 7. One end of the first elastic element 21 presses against the axial end of the first cam 2, and the other end of the first elastic element 21 presses against the inner wall of the first connecting sleeve 6. The structure is simple and compact, easy to operate, and more stable and reliable.

[0038] A second elastic element 26 is also provided inside the first elastic element 21. The second elastic element 26 is a compression spring sleeved on the first connecting shaft 7. One end of the second elastic element 26 presses against one axial end of the first cam 2, and the other end of the first elastic element 21 presses against the inner wall of the first connecting sleeve 6. The structure is more stable and reliable, ensuring better product opening, etc. A first positioning post 25 is provided on the first cam 2 to cooperate with the first elastic element 21. One end of the first elastic element 21 is sleeved on the first positioning post 25, and one end of the second elastic element 26 can also be sleeved on or pressed against the first positioning post 25, making the structure more stable and reliable.

[0039] When the product is folded and closed, there is an appropriate gap between the first outer cam surface 22 of the first cam 2 and the fourth cam surface 42 of the fourth cam 4. That is, the first outer cam surface 22 and the fourth cam surface 42 do not contact each other. This ensures that the first inner cam surface 23 of the first cam 2 cooperates with the third cam surface 31 of the third cam 3 to generate a pre-compression torque to keep the product closed, preventing damage to the product from slight opening when closed, thus improving safety, stability and reliability. When the first button 1 is released and the product is opened, the first cam 2 slides axially under the action of the first elastic element 21. After the first outer cam surface 22 of the first cam 2 contacts the fourth cam surface 42 of the fourth cam 4, the fourth cam 4 remains fixed, so that the direction of the torque generated at this time is consistent with the direction of product opening, thereby causing the first cam 2 to move axially and rotate along the fourth cam 4, thus driving the product to open.

[0040] Compared with the prior art, the advantages of this disclosure are as follows: When the product is closed, under the action of the first elastic element 21 or the first elastic element 21 and the second elastic element 26, the third cam 3 cooperates with the first slot 41, fixing the third cam 3. At the same time, the first inner cam surface 23 of the first cam 2 cooperates with the third cam surface 31 of the third cam 3, and the first outer cam surface 22 of the first cam 2 and the fourth cam surface 42 of the fourth cam 4 leave an appropriate gap, 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 closure, which can prevent the product from being damaged by slight opening when the product is closed, etc., improving safety, stability, and High reliability and improved service life, etc.; When the product needs to be opened, press the first button 1. The first button 1 drives the third cam 3 to move axially, causing the third cam 3 to separate from the first slot 41, that is, releasing the pre-compression torque that keeps the product closed. At this time, the third cam 3 can rotate, and at the same time, the third elastic element 51 and the fourth elastic element 11 both elastically deform. Since the axial force of the first elastic element 21 is greater than the axial force of the third elastic element 51, the second cam 5 and the first cam 2 are not moving at this time, which is more labor-saving and has a better operating feel, etc.; After releasing the first button 1, the first elastic element 21 or the first elastic element 21 and the second elastic element 26 act as... First, the first cam 2 slides axially. When the first outer cam surface 22 of the first cam 2 contacts the fourth cam surface 42 of the fourth cam 4, since the fourth cam 4 is fixed, the direction of the torque generated at this time is consistent with the direction of product opening, thereby causing the first cam 2 to move axially and rotate along the fourth cam 4. The first outer cam surface 22 and the fourth cam surface 42 can first climb up and then down, so that the first housing of the product can be automatically opened after opening to a certain angle (i.e., after the first cam 2 rotates to a certain angle). At the same time, the fourth elastic element 11 pushes the first button 1 to reset, and the first inner cam surface 23 of the first cam 2 contacts the third cam surface 42 of the third cam 3. The wheel surface 31 cooperates with the first cam 2, and the rotation of the first cam 2 also drives the third cam 3 to rotate. Similarly, when the product is manually closed, the first outer cam surface 22 and the fourth cam surface 42 first climb uphill and then downhill. After the first housing of the product is manually closed to a certain angle (i.e., after the first cam 2 rotates to a certain angle), automatic closure can be achieved. The structure is compact, stable, reliable, and small in size. The operation is more convenient, faster, and less labor-intensive. The product can be opened automatically with one click through the first button 1. The operation feel and comfort are better, and the safety, stability, and reliability are high, which increases the competitiveness of the product and can better meet people's increasingly higher usage needs, thus expanding the application and development of the product.

[0041] The above descriptions are merely some embodiments of this disclosure, used only to illustrate the technical solutions of this disclosure, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this disclosure, and all such improvements and substitutions should fall within the protection scope of the appended claims. In such cases, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.

Claims

1. A hinge for electronic products, characterized in that, The device includes a first button (1), a fourth elastic element (11), a fourth cam (4), a third cam (3), a first cam (2), and a first elastic element (21). The first elastic element (21) cooperates with the first cam (2), and the fourth elastic element (11) cooperates with the first button (1). The first cam (2) can cooperate with the fourth cam (4). The fourth cam (4) is provided with a first slot (41) that cooperates with the third cam (3). The fourth cam (4) is fixed. When the product is closed, under the action of the first elastic element (21), the third cam (3) cooperates with the first slot (41) to fix the third cam (3). The first cam (2) and the third cam (3) cooperate to generate a pre-pressure torque to keep the product closed. Pressing the first button (1) can push the third cam (3) to move axially so that the third cam (3) is separated from the first slot (41). Pressing the first button (1) can cause the fourth elastic element (11) to deform elastically. After releasing the first button (1), the fourth elastic element (11) can push the first button (1) to reset. Under the action of the first elastic element (21), the first cam (2) and the fourth cam (4) cooperate to open the product. At the same time, the first cam (2) can also drive the third cam (3) to rotate. The fourth cam (4) is provided with a first slide groove (43), the first button (1) is provided with a first push part (13) and a first sliding part (12) that cooperates with the first slide groove (43), the bottom surface of the first slide groove (43) is provided with a first through hole (44), the first through hole (44) communicates with the first slot (41), one end of the first push part (13) can pass through the first through hole (44) and cooperate with the third cam (3), the end of the first push part (13) near the third cam (3) is provided with a first limiting part (14) that extends out of the first through hole (44), under the action of the fourth elastic member (11), the first limiting part (14) presses against the fourth cam (4); The fourth elastic element (11) is a compression spring. The fourth elastic element (11) is located between the first button (1) and the fourth cam (4). One end of the fourth elastic element (11) presses against the bottom surface of the first slide groove (43), and the other end of the fourth elastic element (11) presses against one end of the first sliding part (12). One end of the first sliding part (12) is provided with a first groove (121) that cooperates with the fourth elastic element (11). The end of the first button (1) away from the fourth cam (4) is also provided with a first pressing part (15). The first cam (2) is provided with a first outer cam surface (22) and a first inner cam surface (23), the third cam (3) is provided with a third cam surface (31) that cooperates with the first inner cam surface (23), and the fourth cam (4) is provided with a fourth cam surface (42) that cooperates with the first outer cam surface (22).

2. A hinge for electronic products according to claim 1, characterized in that, A second cam (5) is provided between the first cam (2) and the third cam (3), and a third elastic element (51) is provided between the second cam (5) and the third cam (3). The second cam (5) is provided with a first cam surface (52) that cooperates with the first inner cam surface (23) and a second cam surface (53) that cooperates with the third cam surface (31). The second cam (5) and the third cam (3) are fixed in the circumferential direction and can slide relative to each other in the axial direction. The axial force of the first elastic element (21) is greater than that of the third elastic element (51). The axial force of the first button (1) can push the third cam (3) to move axially so that the third cam (3) is separated from the first slot (41). At the same time, the fourth elastic element (11) and the third elastic element (51) are elastically deformed. After the first button (1) is released and the product is opened, the third cam (3) can rotate to the position corresponding to the first slot (41). The third elastic element (51) can drive the third cam (3) to slide axially so that the third cam (3) can cooperate with the first slot (41) again.

3. A hinge for electronic products according to any one of claims 1 to 2, characterized in that, The first cam (2) and the first elastic element (21) are disposed inside the first connecting sleeve (6). The first cam (2) is fixed in the circumferential direction and coaxial with the first connecting sleeve (6). The first cam (2) can slide along the inner axial direction of the first connecting sleeve (6) and cause the first elastic element (21) to elastically deform. One end opening of the first connecting sleeve (6) can avoid the third cam (3) and the fourth cam (4).

4. A hinge for electronic products according to claim 3, characterized in that, The outer side of the first cam (2) is provided with a second sliding part (24) along its axial direction, and the first connecting sleeve (6) is provided with a second sliding groove (62) that cooperates with the second sliding part (24).

5. A hinge for electronic products according to claim 3, characterized in that, The first cam (2), the third cam (3) and the fourth cam (4) are sequentially arranged on the first connecting shaft (7). The first connecting shaft (7) is coaxial with the first cam (2), the third cam (3) and the fourth cam (4). The first connecting sleeve (6) is provided with a second through hole (61) that cooperates with the first connecting shaft (7) at one end away from the third cam (3). The first connecting shaft (7) is provided with a first limiting member (71) that cooperates with the first connecting sleeve (6) at one end. The first connecting shaft (7) is provided with a second limiting member (72) that cooperates with the fourth cam (4) at the other end.

6. A hinge for electronic products according to claim 5, characterized in that, The first elastic element (21) is a compression spring sleeved on the first connecting shaft (7). The first elastic element (21), the first cam (2), the third cam (3) and the fourth cam (4) are arranged sequentially along the axial direction of the first connecting shaft (7). One end of the first elastic element (21) presses against one axial end of the first cam (2), and the other end of the first elastic element (21) presses against the inner wall of the first connecting sleeve (6).

7. A hinge for electronic products according to claim 6, characterized in that, The first elastic element (21) is further provided with a second elastic element (26), which is a compression spring sleeved on the first connecting shaft (7). One end of the second elastic element (26) presses against one axial end of the first cam (2), and the other end of the first elastic element (21) presses against the inner wall of the first connecting sleeve (6). The first cam (2) is provided with a first positioning post (25) that cooperates with the first elastic element (21), and one end of the first elastic element (21) is sleeved on the first positioning post (25).

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