Push-button automatic pop-off hinge and flip device

Abstract

This invention relates to a button-type automatic flip-top hinge and flip cover device, belonging to the technical field of hinge structures. It includes a housing, an inner cam, an outer cam, a first elastic element, and a pressing element. The inner cam is disposed within the housing and can slide along the length of the housing. The outer cam is rotatably mounted on the housing. An inclined first engagement surface is spirally wound around the side of the outer cam facing the inner cam, and an inclined second engagement surface is spirally wound around the side of the inner cam facing the outer cam. A slot is formed on the outer cam, located on the side of the first engagement surface facing the inner cam. A corresponding locking block is provided on the inner cam. The first elastic element is disposed within the housing and located on the side of the outer cam facing away from the inner cam. The pressing element is disposed on the outer cam and slides away from or towards the locking block. This invention improves the convenience of opening and closing the flip cover, enhances the user experience, and has a simple structure, low cost, small space requirement, and is easy to manufacture.

Description

Technical Field

[0001] This invention relates to the technical field of hinge accessories, and in particular to a button-operated automatic pop-open hinge. Background Technology

[0002] As a basic mechanical connecting component, the hinge is widely used in products that require the relative rotation and opening / closing of two parts, such as flip phones, battery compartment covers, charging cases, earphone cases, and cosmetic mirrors. Its core function is to provide stable rotational support and reliably position itself in a specific location (such as open or closed), which is crucial to the product's ease of use, user experience, and overall quality.

[0003] Currently, most hinges used in such products on the market rely on manual operation to open and close. Users need to apply force directly by hand to open or close the device. Although some hinge designs may include simple snap-fit ​​or magnetic structures to assist in positioning, their core rotational motion process itself does not have automatic driving capability. This means that whether it is opening or closing, the user needs to operate manually and apply sufficient force throughout the process.

[0004] This type of manually operated hinge is cumbersome to open and close, lacking convenience. Users need to precisely align the parts and apply force to complete the entire opening and closing process. Frequent manual operation is cumbersome, especially in scenarios that require quick or one-handed operation (such as opening a flip phone while holding an object), which is even more inconvenient and results in a poor user experience. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a button-type automatic pop-up hinge to solve the technical problems of cumbersome opening and closing operations, lack of convenience, and poor user experience in the prior art.

[0006] This invention provides a button-operated automatic pop-out hinge, comprising: The shell is hollow and open at one end; An inner cam is disposed within the housing and is capable of sliding along the length of the housing. An outer cam is rotatably mounted on the open end of the housing. An inclined first engagement surface is spirally wound on the side of the outer cam facing the inner cam, and an inclined second engagement surface is spirally wound on the side of the inner cam facing the outer cam. The first engagement surface and the second engagement surface engage. A slot is provided on the outer cam, located on the end of the first engagement surface facing the inner cam. A corresponding locking block is provided on the inner cam, located on the end of the second engagement surface facing the outer cam. A first elastic element is disposed within the housing and located on the side of the outer cam facing away from the inner cam; A pressing element is provided on the outer cam and is capable of sliding on the outer cam in a direction away from or towards the locking block; When the outer cam is rotated, the first meshing surface of the outer cam presses against the second meshing surface of the inner cam, causing the inner cam to move toward the first elastic element. The first elastic element is compressed and generates a restoring force that causes the inner cam to move toward the outer cam. When the card block is inserted into the card slot, the outer cam and the inner cam reach a balance, restricting the rotation of the outer cam. When the pressing member is triggered, the pressing member moves towards the card block until the card block is disengaged from the card slot. The pressing element includes: The pressing cam has a sliding hole on its outer cam, which communicates with the slot. The pressing cam is slidably disposed in the sliding hole, and the side of the pressing cam facing the inner cam is set as an inclined surface. A press button is located on the end of the press cam facing away from the inner cam. A sliding groove is provided on the outer cam. The sliding hole communicates with the sliding groove. The press button part is located in the sliding groove and can slide towards or away from the inner cam within the sliding groove. The pressing component also includes a second elastic component, which is disposed in the sliding groove. One end of the second elastic component abuts against the bottom of the sliding groove, and the other end abuts against the wall of the pressing cam. When the pressing button moves towards the inner cam under the action of an external force, the second elastic component is compressed and generates a restoring force that causes the pressing component to move away from the inner cam. The pressing cam includes an operating part and a head connected to the operating part. The operating part extends along the length of the sliding groove and is located within the sliding groove. The inclined surface is disposed on the end of the operating part facing away from the head. The head is located between the second elastic member and the pressing button. The second elastic member drives the head to abut against the pressing button.

[0007] Optionally, a limiting block is provided on the side wall of the pressing button facing the pressing cam, and a limiting groove is provided on the inner wall of the sliding groove. The limiting groove extends along the sliding direction of the pressing button, and the limiting block is located in the limiting groove and slides along the length direction of the limiting groove.

[0008] Optionally, it also includes a shaft core, which extends along the arrangement direction of the outer cam and the inner cam, and passes through the outer cam, the inner cam and the housing in sequence, with both ends of the shaft core rotatably connected to the housing and the outer cam respectively.

[0009] Optionally, a limiting block is provided on one end of the shaft facing the outer cam, and a limiting groove is provided on the side wall of the other end. The limiting block abuts against the wall of the outer cam on the side facing the inner cam. The limiting groove is located outside the housing and a retaining ring is provided in the limiting groove. The retaining ring abuts against the outer wall of the housing.

[0010] Optionally, a wear-resistant plate is sleeved on the shaft core, the wear-resistant plate is located between the retaining ring and the outer wall of the housing, and the wear-resistant plate and the outer wall of the housing abut against the retaining ring.

[0011] Optionally, at least two protrusions are provided on the outer wall of the housing, the protrusions being located at the wear-resistant sheet and passing through the wear-resistant sheet.

[0012] The present invention also provides a flip cover device, including the aforementioned button-type automatic pop-opening hinge, and further including a housing and a rotatable flip cover, wherein the housing is mounted on the housing and the outer cam is mounted on the flip cover.

[0013] The technical solution of the present invention has the following advantages: 1. The push-button automatic spring-opening rotating shaft provided by this invention utilizes the sliding engagement of the first meshing surface of the outer cam with the second meshing surface of the inner cam. This allows the inner cam to be squeezed when the outer cam is manually rotated, moving it towards the first elastic element. The first elastic element is compressed and stores energy. When the outer cam rotates 180 degrees and the first and second meshing surfaces reach their apex, a locking block engages in the slot, achieving a lock. The inner and outer cams are then balanced. When the external force is removed and the outer cam is rotated, it remains stable and does not rotate. When rotation of the outer cam is needed, simply press the push-button button manually. The pressing component moves towards the locking block, causing the locking block to disengage from the locking slot. At this point, the first elastic element releases its force, causing the outer cam to rotate and automatically spring open. Meanwhile, the inner cam moves towards the outer cam until it returns to the initial state where the first and second meshing surfaces are fully engaged. This achieves automatic rotation of the outer cam with a simple press, thus solving the problem of cumbersome and rigid operation caused by the traditional fully manual operation of the rotating shaft. It improves the convenience of opening and closing the flip cover device, enhances the user experience, and has a simple structure, low cost, small space requirements, and is easy to manufacture.

[0014] 2. The button-type automatic spring-opening rotating shaft provided by the present invention, by setting a second elastic element, can automatically make the pressing cam and the pressing button spring back to the original position. The pressing part can be restored without the assistance of external force, which is convenient to operate. It can also ensure that the pressing cam and the pressing button are in contact, eliminate the play between the pressing cam and the pressing button, and avoid the gap between the two, which would cause abnormal noise during operation.

[0015] 3. The button-type automatic pop-out hinge provided by the present invention avoids friction between the retaining ring and the outer shell by setting a wear-resistant plate, thereby protecting the outer shell. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the button-type automatic opening and closing hinge in this invention; Figure 2 This is a schematic diagram of the back structure of the button-type automatic opening and closing hinge in this invention; Figure 3 This is an exploded view of the internal structure of the push-button automatic opening / closing hinge in this invention. Figure 4 This is an exploded view of the internal structure of the pressing element and the outer cam in this invention; Figure 5 This is a schematic diagram of the back structure of the pressing cam in this invention; Figure 6 This is a schematic diagram of the back structure of the outer cam in this invention; Figure 7 This is a schematic diagram of the front structure of the inner cam in this invention; Figure 8 This is a schematic diagram of the structure of the shaft core in this invention.

[0018] Explanation of reference numerals in the attached figures: 1. Housing; 2. Inner cam; 3. Outer cam; 4. First elastic element; 5. Pressing element; 51. Pressing cam; 511. Head; 512. Operating part; 52. Pressing button; 6. Second elastic element; 7. Sliding groove; 8. Sliding hole; 9. Limiting groove; 10. Limiting block; 11. Shaft core; 12. Restricting block; 13. Restricting groove; 14. Snap ring; 15. Wear-resistant plate; 16. Protrusion; 17. First meshing surface; 18. Second meshing surface; 19. Inclined surface; 20. Snap groove; 21. Snap block. Detailed implementation method The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0020] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0021] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0023] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0024] Example 1 Reference Figures 1-8 As shown, the present invention provides a button-type automatic opening and closing hinge, including a housing 1, an inner cam 2, an outer cam 3, a first elastic element 4, and a pressing element 5. The housing 1 is hollow and has an opening at one end. The inner cam 2 is disposed inside the housing 1 and can slide along the length of the housing 1. The outer cam 3 is rotatably disposed on the open end of the housing 1. The first elastic element 4 is disposed inside the housing 1 and is located on the side of the outer cam 3 facing away from the inner cam 2. The pressing element 5 is disposed on the outer cam 3 and can slide on the outer cam 3 in a direction away from or close to the inner cam 2. An inclined first meshing surface 17 is spirally wound on the side of the outer cam 3 facing the inner cam 2, and an inclined second meshing surface 18 is spirally wound on the side of the inner cam 2 facing the outer cam 3. The first meshing surface 17 and the second meshing surface 18 are both distributed unidirectionally around 180 degrees. When the outer cam 3 and the inner cam 2 are installed, the first meshing surface 17 and the second meshing surface 18 mesh. The outer cam 3 has a slot 20, which is located on the first meshing surface 17 facing the inner cam 2. The inner cam 2 has a corresponding integrally formed block 21, which is located on the second meshing surface 18 facing the outer cam 3. When the outer cam 3 is rotated, the first meshing surface 17 of the outer cam 3 presses against the second meshing surface 18 of the inner cam 2, causing the inner cam 2 to move towards the first elastic member 4. The first elastic member 4 is compressed, generating a restoring force that causes the inner cam 2 to move towards the outer cam 3. The outer cam 3 is rotated continuously until the distance the inner cam 2 moves towards the first elastic member 4 is the maximum. At this time, the locking block 21 on the second meshing surface 18 will be locked into the locking groove 20 of the first meshing surface 17, and the outer cam 3 and the inner cam 2 will reach equilibrium. When the external force is removed, the outer cam 3 and the inner cam 2 are relatively prohibited, thereby restricting the rotation of the outer cam 3. When the outer cam 3 is to be rotated, the pressing member 5 is directly triggered, pushing the pressing member 5 towards the locking block 21 until the locking block 21 is disengaged from the locking groove 20. At this time, the compressed first elastic member 4 can push the inner cam 2 to move towards the outer cam 3. Due to the presence of the first meshing surface 17 and the second meshing surface 18, the outer cam 3 will slide and rotate counterclockwise, returning the outer cam 3 to its initial state.

[0025] The outer cam 3 slides against the inner cam 2 via its first engagement surface 17, which engages with the second engagement surface 18. When the outer cam 3 is manually rotated, the inner cam 2 is compressed and moved towards the first elastic element 4. The first elastic element 4 is compressed and stores energy. When the outer cam 3 rotates 180 degrees and the first engagement surface 17 and the second engagement surface 18 reach their apex, the locking block 21 engages in the slot 20, thus achieving locking. The inner cam 2 and outer cam 3 are balanced. When the external force is removed and the outer cam 3 is rotated, it remains stable and does not rotate. When rotation of the outer cam 3 is required, simply press the pressing element 5 manually. The pressing element 5 moves towards the locking block 21, thereby disengaging the locking block 21 from the locking slot 20. At this time, the first elastic element 4 releases its force, causing the outer cam 3 to rotate and automatically spring open. Meanwhile, the inner cam 2 moves towards the outer cam 3 until it returns to the initial state where the first meshing surface 17 and the second meshing surface 18 are fully engaged. This achieves automatic rotation of the outer cam 3 with a simple press, thus solving the problem of cumbersome and rigid operation caused by the traditional fully manual operation of the rotating shaft. It improves the convenience of opening and closing the flip cover, enhances the user experience, and has a simple structure, low cost, small space requirement, and is easy to manufacture.

[0026] As one specific implementation method, refer to Figure 3 and Figure 4As shown, the pressing member 5 includes a pressing cam 51 and a pressing button 52. The outer cam 3 has a sliding hole 8, which is opened along the moving direction of the pressing member 5. The sliding hole 8 is connected to the slot 20 at one end facing the slot 20. The pressing cam 51 extends into the sliding hole 8 from the end of the sliding hole 8 facing away from the slot 20 and can slide in the sliding hole 8. The side of the pressing cam 51 facing the inner cam 2 is set as an inclined surface 19. The pressing button 52 is set on the end of the pressing cam 51 facing away from the inner cam 2. To facilitate the placement of the press button 52, a sliding groove 7 is provided on the outer cam 3. The sliding groove 7 is located on the side of the outer cam 3 facing away from the inner cam 2. The sliding hole 8 is located at the bottom of the sliding groove 7, so that the sliding hole 8 and the interior of the sliding groove 7 are connected. Part of the press button 52 is located inside the sliding groove 7 and can slide towards or away from the inner cam 2 inside the sliding groove 7. The other part is located outside the sliding groove 7, which is convenient for the user to press.

[0027] When the user presses the button 52, the button 52 moves toward the pressing cam 51, which in turn moves the pressing cam 51 toward the inner cam 2 until the inclined surface 19 of the pressing cam 51 is flush with the first meshing surface 17 of the edge of the slot 20. At this point, the disengagement point is reached, and the first elastic element 4 releases its force to push the inner cam 2 toward the outer cam 3. The outer cam 3 then slides and rotates counterclockwise, returning the outer cam 3 to its initial state.

[0028] Furthermore, the pressing member 5 also includes a second elastic member 6, which is disposed in the sliding groove 7. One end of the second elastic member 6 abuts against the bottom of the sliding groove 7, and the other end abuts against the wall of the pressing cam 51. When the pressing button 52 moves towards the inner cam 2 under the action of external force, the second elastic member 6 is compressed and generates a restoring force that causes the pressing member 5 to move away from the inner cam 2. When the external force is removed, the compressed second elastic member 6 can push the pressing cam 51 and the pressing button 52 to move away from the inner cam 2 until they return to their original state.

[0029] In this embodiment, both the first elastic element 4 and the second elastic element 6 are springs, and both the first elastic element 4 and the second elastic element 6 extend along the sliding direction of the inner cam 2. In other embodiments, it is not limited to using only elastic elements; other elastic structures, such as spring sheets, can also be used.

[0030] As one specific implementation method, refer to Figure 3 and Figure 4As shown, the pressing cam 51 includes an operating part 512 and a head 511 integrally formed with the operating part 512. The operating part 512 extends along the length direction of the sliding groove 7 and is slidably disposed in the sliding groove 7. An inclined surface 19 is disposed on the end of the operating part 512 facing away from the head 511. The head 511 is located between the second elastic member 6 and the pressing button 52. The second elastic member 6 drives the head 511 to abut against the pressing button 52.

[0031] By setting the second elastic element 6, the pressing cam 51 and the pressing button 52 can be automatically returned to their original positions. The pressing element 5 can be restored without the assistance of external force, making the operation convenient. It can also ensure that the pressing cam 51 and the pressing button 52 are in contact, eliminating the play between the pressing cam 51 and the pressing button 52, and avoiding gaps between them that could cause abnormal noises.

[0032] To prevent the button 52 from disengaging from the outer cam 3, a limiting block 10 is provided on the side wall of the button 52 facing the pressing cam 51. The limiting block 10 is elastic. A limiting groove 9 is provided on the inner wall of the sliding groove 7. The limiting groove 9 extends along the sliding direction of the button 52. The limiting block 10 is located in the limiting groove 9 and slides along the length of the limiting groove 9. Due to the setting of the limiting groove 9 and the limiting block 10, the stroke of the button 52 is constrained, preventing the second elastic element 6 from sliding the button 52 out of the sliding groove 7. At the same time, the button 52 can only move in the direction of approaching or moving away from the outer cam 3.

[0033] As another implementation method, refer to Figure 2 , 3 and Figure 8 As shown, it also includes a shaft core 11, which extends along the arrangement direction of the outer cam 3 and the inner cam 2. The shaft core 11 passes through the press button 52, the head 511, the outer cam 3, the inner cam 2 and the housing 1 in sequence. The two ends of the shaft core 11 are rotatably connected to the housing 1 and the outer cam 3 respectively, so that the rotating shaft is connected and connected as a whole.

[0034] A limiting block 12 is provided on one end of the shaft core 11 facing the outer cam 3. The limiting block 12 is located in the sliding groove 7 of the outer cam 3 and abuts against the bottom of the sliding groove 7. The other end of the side wall extends out of the housing 1, and a limiting groove 13 is provided on its side wall. The limiting groove 13 is located outside the housing 1, and a retaining ring 14 is provided in the limiting groove 13. The retaining ring 14 abuts against the outer wall of the housing 1, so that the distance between the housing 1 and the outer cam 3 is constant, preventing the outer cam 3 from moving along the axial direction, and ensuring that the first meshing surface 17 and the second meshing surface 18 are always meshed.

[0035] A wear-resistant plate 15 is fitted on the shaft core 11. The wear-resistant plate 15 is located between the retaining ring 14 and the outer wall of the housing 1. The wear-resistant plate 15 abuts against the outer wall of the housing 1 and the retaining ring 14. By setting the wear-resistant plate 15, friction between the retaining ring 14 and the outer wall of the housing 1 is avoided, thus preventing wear of the housing 1. Furthermore, at least two protrusions 16 are provided on the outer wall of the housing 1. The protrusions 16 are all located at the wear-resistant plate 15 and pass through the wear-resistant plate 15. At this time, the setting of the protrusions 16 prevents the wear-resistant plate 15 from rotating on the housing 1, thereby further preventing the wear-resistant plate 15 from rubbing against the outer wall of the housing 1 and causing wear of the housing 1.

[0036] During installation, first, the second elastic element 6 is inserted into the pressing cam 51 and assembled together into the outer cam 3, so that the operating part 512 extends into the sliding hole 8. Then, the pressing button 52 is inserted into the sliding groove 7. At this time, the limiting block 10 and the limiting element abut against each other. The shaft core 11 is taken out and passed through the pressing button 52, pressing cam 51 and outer cam 3 in sequence, so that the limiting block 12 at the end of the shaft core 11 abuts against the bottom wall of the sliding groove 7 to form a rotor body. Next, the first elastic element 4 is placed into the outer shell, and then the inner cam 2 is placed in to form the stator body. The rotor body is then installed onto the stator body. The shaft core 11 passes through the outer cam 3 and the outer wall of the housing 1 in sequence. The limiting groove 13 extends out of the housing 1. The retaining ring 14 is taken out and inserted into the limiting groove 13, and it abuts against the outer wall of the housing 1. The second meshing surface 18 of the inner cam 2 and the first meshing surface 17 of the outer cam 3 mesh, thereby completing the assembly.

[0037] Example 2 Reference Figures 1-8 As shown, this embodiment provides a flip cover device, including the button-type automatic pop-opening pivot as in embodiment 1, and also includes a housing and a rotatable flip cover. The housing 1 is mounted on the housing, and the outer cam 3 is mounted on the flip cover. The first meshing surface 17 of the outer cam 3 slides and engages with the second meshing surface 18 of the inner cam 2, so that when the outer cam 3 is manually rotated, the inner cam 2 is squeezed and moved towards the first elastic member 4. At this time, the first elastic member 4 is compressed and stores energy. When it rotates 180 degrees and the first meshing surface 17 and the second meshing surface 18 reach the top, the locking block 21 is embedded in the locking groove 20, thereby achieving locking, and the inner cam 2 and the outer cam 3 reach balance. When the external force is removed, the outer cam 3 remains stable and does not rotate. When the outer cam 3 needs to rotate, simply press the pressing part 5 manually and move it towards the locking block 21, thereby disengaging the locking block 21 from the locking slot 20. At this time, the first elastic element 4 releases its force, causing the outer cam 3 to rotate and automatically spring open. Meanwhile, the inner cam 2 will move towards the outer cam 3 until it returns to the initial state where the first meshing surface 17 and the second meshing surface 18 are fully engaged. This achieves automatic rotation of the outer cam 3 with a simple press, thus solving the problem of cumbersome and rigid operation caused by the traditional fully manual operation of the rotating shaft. It improves the convenience of opening and closing the flip cover device, enhances the user experience, and has a simple structure, low cost, small space requirement, and is easy to manufacture.

[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A button-operated automatic pop-opening hinge, characterized in that, include: The shell is hollow and open at one end; An inner cam is disposed within the housing and is capable of sliding along the length of the housing. An outer cam is rotatably mounted on the open end of the housing. An inclined first engagement surface is spirally wound around the outer cam on the side facing the inner cam, and an inclined second engagement surface is spirally wound around the inner cam on the side facing the outer cam. The first engagement surface and the second engagement surface engage. A slot is provided on the outer cam, located on the end of the first engagement surface facing the inner cam. A corresponding locking block is provided on the inner cam, located on the end of the second engagement surface facing the outer cam. A first elastic element is disposed within the housing and located on the side of the outer cam facing away from the inner cam; A pressing element is provided on the outer cam and is capable of sliding on the outer cam in a direction away from or towards the locking block; When the outer cam is rotated, the first meshing surface of the outer cam presses against the second meshing surface of the inner cam, causing the inner cam to move toward the first elastic element. The first elastic element is compressed and generates a restoring force that causes the inner cam to move toward the outer cam. When the card block is inserted into the card slot, the outer cam and the inner cam reach a balance, restricting the rotation of the outer cam. When the pressing member is triggered, the pressing member moves towards the card block until the card block is disengaged from the card slot. The pressing element includes: The pressing cam has a sliding hole on its outer cam, which communicates with the slot. The pressing cam is slidably disposed in the sliding hole, and the side of the pressing cam facing the inner cam is set as an inclined surface. A press button is located on the end of the press cam facing away from the inner cam. A sliding groove is provided on the outer cam. The sliding hole communicates with the sliding groove. The press button part is located in the sliding groove and can slide towards or away from the inner cam within the sliding groove. The pressing component also includes a second elastic component, which is disposed in the sliding groove. One end of the second elastic component abuts against the bottom of the sliding groove, and the other end abuts against the wall of the pressing cam. When the pressing button moves towards the inner cam under the action of an external force, the second elastic component is compressed and generates a restoring force that causes the pressing component to move away from the inner cam. The pressing cam includes an operating part and a head connected to the operating part. The operating part extends along the length of the sliding groove and is located within the sliding groove. The inclined surface is disposed on the end of the operating part facing away from the head. The head is located between the second elastic member and the pressing button. The second elastic member drives the head to abut against the pressing button.

2. The button-operated automatic spring-opening hinge as described in claim 1, characterized in that, A limiting block is provided on the side wall of the pressing button facing the pressing cam. A limiting groove is provided on the inner wall of the sliding groove. The limiting groove extends along the sliding direction of the pressing button. The limiting block is located in the limiting groove and slides along the length direction of the limiting groove.

3. The button-operated automatic spring-opening hinge as described in claim 1, characterized in that, It also includes a shaft core, which extends along the arrangement direction of the outer cam and the inner cam. The shaft core passes through the outer cam, the inner cam and the housing in sequence, and the two ends of the shaft core are rotatably connected to the housing and the outer cam, respectively.

4. The button-operated automatic spring-opening hinge as described in claim 3, characterized in that, A limiting block is provided on one end of the shaft facing the outer cam, and a limiting groove is provided on the side wall of the other end. The limiting block abuts against the wall of the outer cam on the side facing the inner cam. The limiting groove is located outside the housing and a retaining ring is provided inside the limiting groove. The retaining ring abuts against the outer wall of the housing.

5. The button-operated automatic spring-opening hinge as described in claim 4, characterized in that, A wear-resistant plate is fitted onto the shaft core. The wear-resistant plate is located between the retaining ring and the outer wall of the housing, and the wear-resistant plate and the outer wall of the housing abut against the retaining ring.

6. The button-type automatic spring-opening hinge as described in claim 5, characterized in that, At least two protrusions are provided on the outer wall of the housing, the protrusions are located at the wear-resistant sheet, and the protrusions pass through the wear-resistant sheet.

7. A flip-top device, characterized in that, The device includes the push-button automatic pop-out hinge as described in any one of claims 1-6, and further includes a housing and a rotatable flip cover, wherein the housing is mounted on the housing and the outer cam is mounted on the flip cover.

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