Double-rotating-shaft hinge structure applied to folding mouse

Abstract

The utility model discloses a double-rotating-shaft hinge structure applied to a folding mouse, which belongs to the technical field of electronic products and comprises a front connecting piece, a rear connecting piece, a middle connecting piece, two flat rotating shafts, a first rotating limiting structure, two second rotating limiting structures and a third rotating limiting structure. A middle connecting piece is arranged between the front connecting piece and the rear connecting piece, the two flat rotating shafts are relatively movably arranged in the middle connecting piece in a penetrating manner, two ends of one flat rotating shaft are respectively connected with the front connecting piece, and two ends of the other flat rotating shaft are respectively connected with the rear connecting piece; a first rotation limiting structure and a second rotation limiting structure are oppositely arranged on the two sides of one flat rotating shaft respectively, and another second rotation limiting structure and a third rotation limiting structure are oppositely arranged on the two sides of the other flat rotating shaft respectively. The rotating shaft hinge structure solves the technical problem of how to improve the structural performance of the rotating shaft hinge structure applied to the folding mouse.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic products, and in particular to a dual-axis hinge structure for use in folding mice. Background Technology

[0002] Electronic products refer to various products manufactured using electronic technology. They typically contain electronic components such as integrated circuits, transistors, resistors, and capacitors, and use these components to perform functions such as information processing, transmission, storage, or display. Based on usage scenarios, electronic products can be categorized into consumer electronics, industrial electronics, and medical electronics. Among these, consumer electronics, such as smartphones, tablets, and televisions, have become an indispensable part of people's daily lives.

[0003] Currently, the hinge structures used in some foldable electronic products suffer from drawbacks such as complex structure, high cost, insufficient strength, and susceptibility to damage. For example, the hinges used in foldable screen phones are unsuitable for low-value-added products. Therefore, developing a hinge structure that is functional, economical, durable, and capable of restoring its original shape after being damaged by external forces to meet the specific needs of certain electronic products is the core problem that needs to be solved in current hinge structures.

[0004] Based on this, Chinese Patent CN110703925B discloses a mouse, which includes a body, a switch module, and a pressing component. The switch module includes a switch element; the pressing component is disposed on the body; the pressing component includes a pivot member, a button portion, and a pusher member; the button portion is rotatable relative to the body via the pivot member; the pusher member is configured to provide a pushing force against the button portion, causing the button portion to abut against the switch element. The mouse structure disclosed in this patent effectively solves the problem of excessively long free travel affecting the user's feel when clicking the mouse.

[0005] However, the traditional mouse revealed by existing technology is not deformable as a whole, and its portability is insufficient; while in some new bending and deforming mouse technical solutions, the hinge structure can make the mouse bend and deform, and fold; thus improving the portability of the mouse.

[0006] Based on this, another Chinese patent, CN103064542B, discloses a folding mouse, which includes a first folding body, a second folding body, and a hinge mechanism. The hinge mechanism includes a first mounting bracket, a second mounting bracket, a third mounting bracket, a pin, a return spring, and a clutch. The first mounting bracket includes a first hinge portion, a second hinge portion, and a mounting portion fixed to the second folding body. The second mounting bracket includes a rotating connection portion and a fixing portion. The third mounting bracket includes a pin connection portion and a positioning portion, with the fixing portion and positioning portion fixed to both ends of the second folding body. The clutch has at least two clutch bosses with guide surfaces on one side adjacent to the rotating connection portion. The rotating connection portion has a positioning boss with a guide surface on one side adjacent to the clutch. Each positioning boss can be fitted into the gap between two adjacent clutch bosses. The advantages of the folding mouse disclosed in this patent are ease of use, reduced effort, and automatic positioning.

[0007] However, existing hinge structures for folding mice have the drawback of not being able to precisely stop at the angle required by the structural design. Specifically, existing hinge structures on the market are usually complex and require a fixed torque to achieve folding. Excessive use of such folding mice leads to significant torque attenuation, limiting their lifespan. Furthermore, when the user opens the mouse to its maximum designed angle and applies further extreme pressure, the hinge structure is prone to deformation and failure. More importantly, while most hinge structures are versatile, allowing for free hovering or opening to any angle, they cannot precisely stop at the angle predetermined by the product's structural design. For example, in the design requirements of a dual-axis hinge, the hinges are designed to open one in front of the other at different angles, without interfering with each other; subsequently, closing them also requires them to be brought together one in front of the other to return to the initial fixed state. In summary, the shortcomings of existing technologies mean that the hinge structure used in folding mice still suffers from technical problems such as structural complexity, susceptibility to damage, and inability to accurately stop at a preset angle. Utility Model Content

[0008] Therefore, it is necessary to provide a dual-axis hinge structure for folding mice to address the technical problem of how to improve the structural performance of the hinge structure applied to folding mice.

[0009] A dual-axis hinge structure for a folding mouse includes: a front connecting piece, a rear connecting piece, a middle connecting piece, two flat rotating shafts, a first rotation limiting structure, two second rotation limiting structures, and a third rotation limiting structure. The middle connecting piece is disposed between the front connecting piece and the rear connecting piece. The two flat rotating shafts are movably inserted through the middle connecting piece. The two ends of one flat rotating shaft are connected to the front connecting piece, and the two ends of the other flat rotating shaft are connected to the rear connecting piece. The first rotation limiting structure and the second rotation limiting structure are respectively disposed opposite each other on both sides of one flat rotating shaft, and the first rotation limiting structure and the second rotation limiting structure are respectively connected to the front connecting piece and the middle connecting piece. The other flat rotating shaft is respectively disposed opposite each other on both sides with the second rotation limiting structure and the third rotation limiting structure, and the second rotation limiting structure and the third rotation limiting structure are respectively connected to the rear connecting piece and the middle connecting piece.

[0010] Furthermore, the first rotation limiting structure has a first fixed cam, a first movable cam, and a thin round wire spring; the first fixed cam is connected to the intermediate connecting piece, and the first movable cam is movably connected to the first fixed cam; the thin round wire spring is respectively connected to the first movable cam and the front connecting piece; the first fixed cam, the first movable cam, and the thin round wire spring are respectively sleeved on a flat rotating shaft.

[0011] Furthermore, the two second rotation limiting structures are respectively sleeved on one of the flat rotating shafts. Each of the second limiting structures is provided with a second fixed cam, a second movable cam, and a square wire spring. The second fixed cam is connected to the other side of the intermediate connecting piece relative to the first fixed cam. The second movable cam is movably connected to the second fixed cam. One end of the square wire spring is connected to the second movable cam, and the other end of the square wire spring is connected to the front connecting piece or the rear connecting piece. The second fixed cam, the second movable cam, and the square wire spring are respectively sleeved on one of the flat rotating shafts.

[0012] Furthermore, the third rotation limiting structure includes a third fixed cam, a third movable cam, and a thick round wire spring; the third fixed cam is connected to the intermediate connecting piece, and the third movable cam is movably connected to the third fixed cam; the thick round wire spring connects the third movable cam to the rear connecting piece respectively; the third fixed cam, the third movable cam, and the thick round wire spring are respectively sleeved on a flat rotating shaft.

[0013] Furthermore, the first fixed cam has a first connecting portion and a plurality of first positioning bosses; the first connecting portion is respectively connected to a flat rotating shaft and the intermediate connecting piece, and the plurality of first positioning bosses are evenly distributed on the side of the first connecting portion.

[0014] Furthermore, the first movable cam has a first sleeve portion, a plurality of first deep grooves and a plurality of first shallow grooves; the first sleeve portion is connected to a flat rotating shaft, and the plurality of first deep grooves and the plurality of first shallow grooves are alternately arranged on one side of the first sleeve portion, and each first deep groove or each first shallow groove is movably connected to the first positioning boss.

[0015] Furthermore, the second fixed cam has a second connecting portion and a plurality of second positioning bosses; the second connecting portion is respectively connected to a flat rotating shaft and the intermediate connecting piece, and the plurality of second positioning bosses are evenly distributed on the side of the second connecting portion.

[0016] Furthermore, the second moving cam has a second sleeve portion, a plurality of second deep grooves and a plurality of second shallow grooves; the second sleeve portion is connected to a flat rotating shaft, and the plurality of second deep grooves and the plurality of second shallow grooves are alternately arranged on one side of the second sleeve portion, and each second deep groove or each second shallow groove is movably connected to the second positioning boss.

[0017] Furthermore, the third fixed cam has a third connecting portion and a plurality of third positioning bosses; the third connecting portion is respectively connected to a flat rotating shaft and the intermediate connecting piece, and the plurality of third positioning bosses are evenly distributed on the side of the third connecting portion.

[0018] Furthermore, the third moving cam has a third sleeve portion, a plurality of third deep grooves and a plurality of third shallow grooves; the third sleeve portion is connected to a flat rotating shaft, and the plurality of third deep grooves and the plurality of third shallow grooves are alternately arranged on one side of the third sleeve portion, and each of the third deep grooves or each of the third shallow grooves is movably connected to the third positioning boss.

[0019] In summary, the present invention discloses a dual-axis hinge structure for a folding mouse, comprising a front connecting piece, a rear connecting piece, a middle connecting piece, two flat rotating shafts, a first rotation limiting structure, two second rotation limiting structures, and a third rotation limiting structure. The middle connecting piece is positioned between the front and rear connecting pieces. The two flat rotating shafts are movably inserted through the middle connecting piece. One flat rotating shaft has its two ends connected to the front connecting piece, and the other flat rotating shaft has its two ends connected to the rear connecting piece. The first rotation limiting structure and the second rotation limiting structure are respectively positioned opposite each other on both sides of one flat rotating shaft, correspondingly connecting the front connecting piece and the middle connecting piece. The other flat rotating shaft has another second rotation limiting structure and the third rotation limiting structure respectively positioned opposite each other on both sides, correspondingly connecting the rear connecting piece and the middle connecting piece. The first, second, and third rotation limiting structures each have different adjustment and damping structures, allowing them to provide different adjustment forces and angles. Furthermore, this enables different force feedback when the front connecting piece and the middle connecting piece open and close, and when the rear connecting piece and the middle connecting piece open and close. Thus, different opening and closing sequences can be achieved between the external folding components through varying force feedback. This also optimizes the structural stability of hinge structures in folding components such as folding mice, making the opening and closing actions of the folding components more stable. It can also meet the special requirements of certain electronic products for hinges. Therefore, this invention, a dual-hinge structure for folding mice, solves the technical problem of how to improve the structural performance of hinge structures used in folding mice. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a dual-axis hinge structure applied to a folding mouse according to the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of a dual-axis hinge structure applied to a folding mouse from another direction according to this utility model;

[0022] Figure 3 This is an exploded view of the dual-axis hinge structure of a folding mouse according to the present invention from another direction.

[0023] Figure 4 This is an exploded view of the dual-axis hinge structure of a folding mouse according to the present invention from another direction.

[0024] Figure 5This is a schematic diagram of a dual-axis hinge structure for a folding mouse, according to the present invention, in one usage state. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Please refer to the following: Figures 1 to 4 This utility model discloses a dual-axis hinge structure for a folding mouse, comprising: a front connecting piece 1, a rear connecting piece 2, a middle connecting piece 3, two flat rotating shafts 4, a first rotation limiting structure 5, two second rotation limiting structures 6, and a third rotation limiting structure 7. The middle connecting piece 3 is disposed between the front connecting piece 1 and the rear connecting piece 2. The two flat rotating shafts 4 are movably inserted through the middle connecting piece 3. The two ends of one flat rotating shaft 4 are respectively connected to the front connecting piece 1, and the two ends of the other flat rotating shaft 4 are respectively connected to the rear connecting piece 1. 2. A flat rotating shaft 4 has a first rotation limiting structure 5 and a second rotation limiting structure 6 respectively arranged opposite to each other on both sides, the first rotation limiting structure 5 and the second rotation limiting structure 6 respectively connecting the front connecting piece 1 and the middle connecting piece 3; another flat rotating shaft 4 has another second rotation limiting structure 6 and a third rotation limiting structure 7 respectively arranged opposite to each other on both sides, the second rotation limiting structure 6 and the third rotation limiting structure 7 respectively connecting the rear connecting piece 2 and the middle connecting piece 3.

[0032] Specifically, in the technical solution disclosed in this utility model of a dual-axis hinge structure applied to a folding mouse, the front connecting piece 1 is connected to an external folding action component, the rear connecting piece 2 is connected to another external folding action component, and the middle connecting piece 3 is connected to the body of the folding component; thus, when an external force is applied to a folding action component to drive the front connecting piece 1, the front connecting piece 1 drives a flat rotating shaft 4, and the flat rotating shaft 4 drives the first rotation limiting structure 5 and the second rotation limiting structure 6 respectively; the first rotation limiting structure 5 and the second rotation limiting structure 6... The second rotation limiting structure 6 is used to control the opening and closing angle between the front connecting piece 1 and the intermediate connecting piece 3 when the front connecting piece 1 is opened or closed; in addition, when an external force is applied to another folding action component, the folding action component drives the rear connecting piece 2 to move, and the rear connecting piece 2 drives another flat rotating shaft 4, so that the flat rotating shaft 4 can simultaneously drive the third rotation limiting structure 7 and the other second rotation limiting structure 6; the third rotation limiting structure 7 and the other second rotation limiting structure 6 can be used to control the opening and closing angle between the rear connecting piece 2 and the intermediate connecting piece 3.

[0033] More specifically, the first rotation limiting structure 5, the second rotation limiting structure 6, and the third rotation limiting structure 7 each have different adjustment structures and damping structures, thereby enabling the three rotation limiting structures to provide different adjustment forces and adjustment angles. Furthermore, this allows for different force feedbacks when the front connecting piece 1 and the middle connecting piece 3 open and close, and when the rear connecting piece 2 and the middle connecting piece 3 open and close. Thus, different opening and closing sequences can be achieved between the external folding action components through different magnitudes of force feedback. It can also optimize the structural stability of the hinge structure of folding components such as folding mice, making the opening and closing action of the folding components more stable. It can also meet the special requirements of certain electronic products for the hinge.

[0034] Furthermore, the first rotation limiting structure 5 has a first fixed cam 501, a first movable cam 502, and a thin round wire spring 503; the first fixed cam 501 is connected to the intermediate connecting piece 3, and the first movable cam 502 is movably connected to the first fixed cam 501; the thin round wire spring 503 is respectively connected to the first movable cam 502 and the front connecting piece 1; the first fixed cam 501, the first movable cam 502, and the thin round wire spring 503 are respectively sleeved on a flat rotating shaft 4.

[0035] Furthermore, the two second rotation limiting structures 6 are respectively sleeved on one of the flat rotating shafts 4. Each of the second limiting structures 6 is provided with a second fixed cam 601, a second movable cam 602, and a square wire spring 603. The second fixed cam 601 is connected to the other side of the intermediate connecting piece 3 relative to the first fixed cam 501. The second movable cam 602 is movably connected to the second fixed cam 601. One end of the square wire spring 603 is connected to the second movable cam 602, and the other end of the square wire spring 603 is connected to the front connecting piece 1 or the rear connecting piece 2. The second fixed cam 601, the second movable cam 602, and the square wire spring 603 are respectively sleeved on one of the flat rotating shafts 4.

[0036] Furthermore, the third rotation limiting structure 7 has a third fixed cam 701, a third movable cam 702, and a coarse round wire spring 703; the third fixed cam 701 is connected to the intermediate connecting piece 3, and the third movable cam 702 is movably connected to the third fixed cam 701; the coarse round wire spring 703 connects the third movable cam 702 and the rear connecting piece 2 respectively; the third fixed cam 701, the third movable cam 702, and the coarse round wire spring 703 are respectively sleeved on a flat rotating shaft 4.

[0037] Specifically, the first fixed cam 501, the second fixed cam 601 and the third fixed cam 701 each have one side connected to the intermediate connecting piece 3, and the other side of each of these three has an uneven structure to connect with the corresponding surface of the first moving cam 502, the second moving cam 602 or the third moving cam 703.

[0038] More specifically, in one embodiment, the first fixed cam 501 has a first connecting portion 501a and a plurality of first positioning bosses 501b; the first connecting portion 501a is respectively connected to a flat rotating shaft 4 and the intermediate connecting piece 3, and the plurality of first positioning bosses 501b are evenly distributed on the side of the first connecting portion 501a.

[0039] Furthermore, the first movable cam 502 has a first sleeve portion 502a, a plurality of first deep grooves 502b and a plurality of first shallow grooves 502c; the first sleeve portion 502a is connected to a flat rotating shaft 4, and the plurality of first deep grooves 502b and the plurality of first shallow grooves 502c are alternately arranged on one side of the first sleeve portion 502a, and each first deep groove 502b or each first shallow groove 502c is movably connected to the first positioning boss 501b.

[0040] Specifically, the first fixed cam 501, the second fixed cam 601 and the third fixed cam 701 all have similar structures, that is, they can all be connected to the flat rotating shaft 4 and the intermediate connecting piece 3 through a first connecting part 501a, respectively. For example, the first connecting part 501a can be cylindrical, movably sleeved on the corresponding flat rotating shaft 4, with one side abutting against the side of the intermediate connecting piece 3. Thus, the first positioning boss 501b on its other side can alternately connect with the first deep groove 502b or the first shallow groove 502c. Furthermore, when a force is applied to the front connecting piece 1, the first positioning boss 501b can alternately engage with the first deep groove 502b or the first shallow groove 502c, thereby limiting the angle formed between the front connecting piece 1 and the intermediate connecting piece 3. When a force is applied to the front connecting piece 1, it drives the flat rotating shaft 4, and the middle part of the first sleeve part 502a sleeved on the flat rotating shaft 4 is set as a square hole matching the outer contour of the flat rotating shaft 4. When the flat rotating shaft 4 is driven to rotate, the first sleeve portion 502a is also driven to rotate, thereby causing the first deep groove 502b or the first shallow groove 502c to alternately engage with the first positioning boss 501b; and when a force is applied to the front connecting piece 1 to switch the engagement relationship between the first deep groove 502b or the first shallow groove 502c and the corresponding first positioning boss 501b, the thin round wire spring 503 is compressed to change the switching state of the two; and when the force applied to the front connecting piece 1 is removed, the thin round wire spring 503 maintains the engagement state between the first deep groove 502b or the first shallow groove 502c and the first positioning boss 501b through the spring force, thereby making the angle formed between the front connecting piece 1 and the rear connecting piece 2 constant.

[0041] Furthermore, it can be deduced that the second fixed cam 601 has a second connecting part 601a and a plurality of second positioning bosses 601b; the second connecting part 601a is respectively connected to a flat rotating shaft 4 and the intermediate connecting piece 3, and the plurality of second positioning bosses 601b are evenly distributed on the side of the second connecting part 601a.

[0042] Furthermore, the second movable cam 602 has a second sleeve portion 602a, a plurality of second deep grooves 602b, and a plurality of second shallow grooves 602c; the second sleeve portion 602a is connected to a flat rotating shaft 4, and the plurality of second deep grooves 602b and the plurality of second shallow grooves 602c are alternately arranged on one side of the second sleeve portion 602a, and each second deep groove 602b or each second shallow groove 602c is movably connected to the second positioning boss 601b.

[0043] Furthermore, it can be deduced that the third fixed cam 701 has a third connecting part 701a and a plurality of third positioning bosses 701b; the third connecting part 701a is respectively connected to a flat rotating shaft 4 and the intermediate connecting piece 3, and the plurality of third positioning bosses 701b are evenly distributed on the side of the third connecting part 701a.

[0044] Furthermore, the third moving cam 702 has a third sleeve portion 702a, a plurality of third deep grooves 702b, and a plurality of third shallow grooves 702c; the third sleeve portion 702a is connected to a flat rotating shaft 4, and the plurality of third deep grooves 702b and the plurality of third shallow grooves 702c are alternately arranged on one side of the third sleeve portion 702a, and each of the third deep grooves 702b or each of the third shallow grooves 702c is movably connected to the third positioning boss 701b.

[0045] It can be easily deduced that the first deep groove 502b, the second deep groove 602b, and the third deep groove 702b can have different or the same size specifications, depending mainly on the application scenario requirements of the dual-axis hinge structure of the present invention for a folding mouse.

[0046] Similarly, the first shallow groove 502c, the second shallow groove 602c, and the third shallow groove 702c can have different or the same size specifications, depending on the application scenario requirements of the dual-axis hinge structure of the present invention for a folding mouse.

[0047] Furthermore, the cross-section of the thin round wire spring 503 or the thick round wire spring 703 is circular, and the wire diameters of the two are different. For example, the cross-sectional diameter of the thin round wire spring 503 can be 0.8 mm, while the cross-sectional diameter of the thick round wire spring 703 can be 0.9 mm. That is, the wire diameter of the thin round wire spring 503 should be smaller than that of the thick round wire spring 703. The main functions of the difference in wire diameter between the two springs are: 1. To control the opening sequence between the front connecting piece 1 and the rear connecting piece 2. This is because when the same external force is applied to both, the larger the wire diameter, the stronger the corresponding damping, and the side with stronger damping can be opened later; 2. To control the difference in the pivot torque between the front connecting piece 1 and the rear connecting piece 2, so as to identify different pivots.

[0048] Furthermore, the cross-section of the square wire spring 603 is square, and its functions are: 1. to further enhance the torque in a limited space; 2. to generate damping torque and stop limit function when the rotating shaft is working normally. When encountering a destructive force, for example, if the safe force is set to 5KGF, if the force is greater than 5KGF, the second moving cam 602 will retract and pass the stop position. After passing the stop position, it can be manually restored, thereby protecting the dual-shaft hinge structure of this utility model applied to a folding mouse from damage.

[0049] Furthermore, during the aforementioned cooperation of different fixed cams and moving cams, when the front connecting piece 1 or the rear connecting piece 2 comes together, the structure of the positioning boss can produce a jerky feel when they come together in place; moreover, the deep groove and the shallow groove can be used to identify the sliding position and the stop position, limiting the closing angle.

[0050] In summary, commercially available hinges typically suffer from complex structures and require a fixed torque to function. Excessive use leads to significant torque attenuation, limiting their lifespan. Furthermore, ordinary hinges deform and fail when opened to their maximum designed angle and subjected to extreme pressure. This invention, however, presents a dual-hinge structure for a folding mouse with a protective mechanism. This mechanism utilizes a distribution of springs with different cross-sectional shapes and wire diameters, and a combination of fixed and movable cams of varying specifications. This design prevents hinge damage under extreme pressure and allows for manual restoration of the hinge's original shape.

[0051] For example, such as Figure 5As shown, when a user applies force to the front connecting piece 1 or the rear connecting piece 2, the second rotation limiting structure 6 is provided on both the moving side of the front connecting piece 1 and the moving side of the rear connecting piece 2. That is, when an overload is applied, the second deep groove 602b or the second shallow groove 602c provided on the second moving cam 602, in its engagement with the second positioning boss 601b, converts the thrust acting on the front connecting piece 1 or the rear connecting piece 2 into a force acting axially along the flat rotating shaft 4, and the square wire spring 603 absorbs this axial force, thereby causing the second moving cam 602 to retract, avoiding damage to the rotating shaft due to overload. Moreover, when the force applied to the front connecting piece 1 or the rear connecting piece 2 is removed, the engagement relationship between the second moving cam 602 and the second fixed cam 601 can be automatically or manually restored; thus, the state of the rotating shaft can be restored.

[0052] In summary, the dual-axis hinge structure for a folding mouse of this utility model comprises a front connecting piece 1, a rear connecting piece 2, a middle connecting piece 3, two flat rotating shafts 4, a first rotation limiting structure 5, two second rotation limiting structures 6, and a third rotation limiting structure 7. The middle connecting piece 3 is disposed between the front connecting piece 1 and the rear connecting piece 2. The two flat rotating shafts 4 are movably inserted through the middle connecting piece 3. The two ends of one flat rotating shaft 4 are respectively connected to the front connecting piece 1, and the two ends of the other flat rotating shaft 4 are respectively connected to the rear connecting piece 2. Connecting pieces 2 are connected; a first rotation limiting structure 5 and a second rotation limiting structure 6 are respectively arranged opposite each other on both sides of a flat rotating shaft 4, the first rotation limiting structure 5 and the second rotation limiting structure 6 respectively connect the front connecting piece 1 and the middle connecting piece 3; another second rotation limiting structure 6 and a third rotation limiting structure 7 are respectively arranged opposite each other on both sides of another flat rotating shaft 4, the second rotation limiting structure 6 and the third rotation limiting structure 7 respectively connect the rear connecting piece 2 and the middle connecting piece 3. The first rotation limiting structure 5, the second rotation limiting structure 6, and the third rotation limiting structure 7 each have different adjustment structures and damping structures, thereby allowing the three rotation limiting structures to provide different adjustment forces and adjustment angles. Furthermore, this allows for different force feedback when the front connecting piece 1 and the middle connecting piece 3 open and close, and when the rear connecting piece 2 and the middle connecting piece 3 open and close. Thus, different opening and closing sequences can be achieved between the external folding action components through different magnitudes of force feedback. It can also optimize the structural stability of the hinge structure of folding components such as folding mice, making the opening and closing action of the folding components more stable. It can also meet the special requirements of certain electronic products for the hinge. Therefore, this utility model, a dual-hinge structure applied to folding mice, solves the technical problem of how to improve the structural performance of hinge structures applied to folding mice.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A dual-axis hinge structure for use in a folding mouse, characterized in that, It includes: a front connecting piece (1), a rear connecting piece (2), a middle connecting piece (3), two flat rotating shafts (4), a first rotation limiting structure (5), two second rotation limiting structures (6), and a third rotation limiting structure (7); the middle connecting piece (3) is provided between the front connecting piece (1) and the rear connecting piece (2), and the two flat rotating shafts (4) are movably inserted into the middle connecting piece (3), with one flat rotating shaft (4) having its two ends connected to the front connecting piece (1) and the other flat rotating shaft (4) having its two ends connected to the rear connecting piece (2); one flat rotating shaft (4) has its two ends connected to the rear connecting piece (2); one flat rotating shaft (4) has its two ends connected to the rear connecting piece (2), and ... The first rotation limiting structure (5) and the second rotation limiting structure (6) are respectively arranged opposite to each other on both sides of the rotating shaft (4). The first rotation limiting structure (5) and the second rotation limiting structure (6) are respectively connected to the front connecting piece (1) and the middle connecting piece (3). The other flat rotating shaft (4) is respectively arranged opposite to each other on both sides of the second rotation limiting structure (6) and the third rotation limiting structure (7). The second rotation limiting structure (6) and the third rotation limiting structure (7) are respectively connected to the rear connecting piece (2) and the middle connecting piece (3).

2. The dual-axis hinge structure for a folding mouse according to claim 1, characterized in that: The first rotation limiting structure (5) has a first fixed cam (501), a first moving cam (502), and a thin round wire spring (503).

3. The dual-axis hinge structure for a folding mouse according to claim 2, characterized in that: The first fixed cam (501) is connected to the intermediate connecting piece (3), and the first movable cam (502) is movably connected to the first fixed cam (501); the thin round wire spring (503) is connected to the first movable cam (502) and the front connecting piece (1) respectively.

4. The dual-axis hinge structure for a folding mouse according to claim 3, characterized in that: The first fixed cam (501), the first moving cam (502), and the thin round wire spring (503) are respectively sleeved on a flat rotating shaft (4).

5. A dual-axis hinge structure for a folding mouse according to claim 4, characterized in that: The two second rotation limiting structures (6) are respectively sleeved on a flat rotating shaft (4). Each second rotation limiting structure (6) is provided with a second fixed cam (601), a second moving cam (602) and a square wire spring (603).

6. A dual-axis hinge structure for a folding mouse according to claim 5, characterized in that: The second fixed cam (601) is connected to the other side of the intermediate connecting piece (3) relative to the first fixed cam (501). The second moving cam (602) is movably connected to the second fixed cam (601). One end of the square wire spring (603) is connected to the second moving cam (602), and the other end of the square wire spring (603) is connected to the front connecting piece (1) or the rear connecting piece (2).

7. A dual-axis hinge structure for a folding mouse according to claim 6, characterized in that: The second fixed cam (601), the second moving cam (602), and the square wire spring (603) are respectively sleeved on a flat rotating shaft (4).

8. A dual-axis hinge structure for a folding mouse according to claim 7, characterized in that: The third rotation limiting structure (7) has a third fixed cam (701), a third moving cam (702), and a coarse round wire spring (703).

9. A dual-axis hinge structure for a folding mouse according to claim 8, characterized in that: The third fixed cam (701) is connected to the intermediate connecting piece (3), and the third moving cam (702) is movably connected to the third fixed cam (701); the thick round wire spring (703) connects the third moving cam (702) and the rear connecting piece (2) respectively.

10. A dual-axis hinge structure for a folding mouse according to claim 9, characterized in that: The third fixed cam (701), the third moving cam (702), and the coarse round wire spring (703) are respectively sleeved on a flat rotating shaft (4).

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