Double-rotating-shaft hinge structure applied to folding mouse

Abstract

The invention 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] The present invention relates to the technical field of electronic products, and particularly to a double-rotating shaft hinge structure applied to a folding mouse. Background Art

[0002] Electronic products refer to various products manufactured using electronic technology. They usually contain electronic components such as integrated circuits, transistors, resistors, capacitors, etc., and realize functions such as information processing, transmission, storage, or display through these components. Classified by usage scenarios, electronic products can be divided into consumer electronic products, industrial electronic products, medical electronic products, etc. Among them, consumer electronic products such as smart phones, tablets, TVs, etc. have become an indispensable part of people's daily lives.

[0003] Currently, the rotating shaft hinge structures applied to some folding electronic products still have defects such as complex structure, high cost, insufficient strength, and easy damage. For example, the hinge used in a folding screen mobile phone is not suitable for low-value-added products. Therefore, how to develop a hinge structure that can not only meet the functions but also be economical and durable; and can return to its original state when damaged by external forces to meet the specific needs of some electronic products; is the core problem to be solved for the current rotating shaft hinge structure.

[0004] Based on this, Chinese Patent CN110703925B discloses a mouse, which includes a body, a switch module, and a pressing component; wherein, the switch module contains a switch; the pressing component is arranged on the body; the pressing component includes a pivot member, a button part, and a pushing member; the button part can rotate relative to the body by means of the pivot member; the pushing member is configured to provide a pushing force for pushing the button part so that the button part abuts against the switch. The mouse structure disclosed in this patent can effectively solve the problem that the overlong empty stroke affects the user's feeling when clicking the mouse.

[0005] However, the traditional mouse disclosed in the prior art is generally non-deformable and has insufficient portability; while in some technical solutions of new bendable and deformable mice, the rotating shaft hinge structure provided can make the mouse bend and deform and also fold; thereby improving the portability of the mouse.

[0006] Based on this, another Chinese patent CN103064542B also 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 shaft, a return spring, and a clutch member; the first mounting bracket includes a first hinge portion, a second hinge portion, and a mounting portion fixed on the second folding body; the second mounting bracket includes a rotating connection portion and a fixing portion; the third mounting bracket includes a pin shaft connection portion and a positioning portion, and the fixing portion and the positioning portion are fixed on both side ends of the second folding body; the clutch member is provided with at least two clutch bosses having guiding sliding surfaces on one side end adjacent to the rotating connection portion; the rotating connection portion is provided with a positioning boss having a guiding sliding surface on one side end adjacent to the clutch member; each positioning boss can be embedded in the gap between two adjacent clutch bosses. The advantages of the folding mouse disclosed in this patent are convenient use, relatively labor-saving, and automatic limiting.

[0007] However, the pivot hinge structure applied to folding mice disclosed in the prior art still has the drawback that it cannot accurately stay at the angles required by the structural design. Specifically, in the prior art, the pivot structures disclosed on the market usually have complex structures, and furthermore, they need to meet a fixed torque to achieve deformation and folding; when the folding mice of this type are used too many times, the torque attenuation will be serious, resulting in limited service life. In addition, in this type of folding pivot structure, when the user opens it to the maximum designed angle and then bears further extreme pressure, this type of pivot structure will easily deform and be scrapped. More importantly, although most pivot structures are universal, such as free hovering or being opened to any angle; but this type of universal pivot structure cannot achieve the purpose of accurately staying at the angles preset by the product structure design. For example, in the design requirements of a double-axis hinge, it is required that its pivot shafts open one after the other, and the two shafts open at different angles without interfering with each other; thereafter, when closing, it also needs to close one after the other so that it can return to the initial fixed state. To sum up, the defects existing in the prior art make the pivot hinge structure applied to folding mice still have technical problems such as complex structure, easy damage, and inability to accurately stay at the preset angles. Summary of the Invention

[0008] Based on this, in view of the technical problem of how to improve the structural performance of the pivot hinge structure applied to folding mice, it is necessary to provide a double-pivot hinge structure applied to folding mice.

[0009] A double-rotating shaft hinge structure applied to a folding mouse, which comprises: a front connecting piece, a rear connecting piece, an intermediate connecting piece, two flat shafts, a first rotation limiting structure, two second rotation limiting structures and a third rotation limiting structure; the intermediate connecting piece is arranged between the front connecting piece and the rear connecting piece, and the two flat shafts are relatively movably penetrated through the intermediate connecting piece, two ends of one flat shaft are respectively connected with the front connecting piece, and two ends of the other flat shaft are respectively connected with the rear connecting piece; the first rotation limiting structure and a second rotation limiting structure are respectively arranged on two sides of one flat shaft relatively, and the first rotation limiting structure and the second rotation limiting structure are respectively correspondingly connected with the front connecting piece and the intermediate connecting piece; the other second rotation limiting structure and the third rotation limiting structure are respectively arranged on two sides of the other flat shaft relatively, and the second rotation limiting structure and the third rotation limiting structure are respectively correspondingly connected with the rear connecting piece and the intermediate connecting piece.

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

[0011] Further, the two second rotation limiting structures are respectively sleeved on one flat shaft, and each second limiting structure is provided with a second fixed cam, a second moving cam and a square wire spring; the second fixed cam is connected to the other side surface of the intermediate connecting piece relative to the first fixed cam, the second moving cam is movably connected with the second fixed cam, one end of the square wire spring is connected with the second moving cam, and the other end of the square wire spring is connected with the front connecting piece or the rear connecting piece; the second fixed cam, the second moving cam and the square wire spring are correspondingly sleeved on one flat shaft.

[0012] Further, the third rotation limiting structure has a third fixed cam, a third moving cam and a thick round wire spring; the third fixed cam is connected with the intermediate connecting piece, and the third moving cam is movably connected with the third fixed cam; the thick round wire spring is respectively connected with the third moving cam and the rear connecting piece; the third fixed cam, the third moving cam and the thick round wire spring are respectively sleeved on one flat shaft.

[0013] Further, the first fixed cam has a first connecting portion and a plurality of first positioning convex platforms; the first connecting portion is respectively connected with one flat shaft and the intermediate connecting piece, and the plurality of first positioning convex platforms are uniformly distributed on the side surface of the first connecting portion.

[0014] Further, the first moving cam has a first socket portion, a plurality of first deep grooves, and a plurality of first shallow grooves; the first socket portion is connected to one of the flat shafts, and the plurality of first deep grooves and the plurality of first shallow grooves are alternately arranged on one side surface of the first socket portion, and each of the first deep grooves or each of the first shallow grooves is correspondingly and movably connected to the first positioning boss.

[0015] Further, the second fixed cam has a second connecting portion and a plurality of second positioning bosses; the second connecting portion is respectively connected to one of the flat shafts and the intermediate connecting piece, and the plurality of second positioning bosses are uniformly distributed on the side surface of the second connecting portion.

[0016] Further, the second moving cam has a second socket portion, a plurality of second deep grooves, and a plurality of second shallow grooves; the second socket portion is connected to one of the flat shafts, and the plurality of second deep grooves and the plurality of second shallow grooves are alternately arranged on one side surface of the second socket portion, and each of the second deep grooves or each of the second shallow grooves is correspondingly and movably connected to the second positioning boss.

[0017] Further, the third fixed cam has a third connecting portion and a plurality of third positioning bosses; the third connecting portion is respectively connected to one of the flat shafts and the intermediate connecting piece, and the plurality of third positioning bosses are uniformly distributed on the side surface of the third connecting portion.

[0018] Further, the third moving cam has a third socket portion, a plurality of third deep grooves, and a plurality of third shallow grooves; the third socket portion is connected to one of the flat shafts, and the plurality of third deep grooves and the plurality of third shallow grooves are alternately arranged on one side surface of the third socket portion, and each of the third deep grooves or each of the third shallow grooves is correspondingly and movably connected to the third positioning boss.

[0019] In summary, a dual-rotating shaft hinge structure applied to a folding mouse according to the present invention is respectively provided with a front connecting piece, a rear connecting piece, an intermediate connecting piece, two flat shafts, a first rotation limiting structure, two second rotation limiting structures, and a third rotation limiting structure; the intermediate connecting piece is arranged between the front connecting piece and the rear connecting piece, and the two flat shafts are relatively movably inserted into the intermediate connecting piece, two ends of one flat shaft are respectively connected to the front connecting piece, and two ends of the other flat shaft are respectively connected to the rear connecting piece; the first rotation limiting structure and one of the second rotation limiting structures are respectively arranged on both sides of one flat shaft relatively, and the first rotation limiting structure and the second rotation limiting structure are respectively correspondingly connected to the front connecting piece and the intermediate connecting piece; the other second rotation limiting structure and the third rotation limiting structure are respectively arranged on both sides of the other flat shaft relatively, and the second rotation limiting structure and the third rotation limiting structure are respectively correspondingly connected to the rear connecting piece and the intermediate connecting piece. The first rotation limiting structure, the second rotation limiting structure, and the third rotation limiting structure respectively have different adjusting structures and damping structures. Therefore, the three rotation limiting structures can respectively provide different adjusting forces and adjusting angles; furthermore, when the front connecting piece and the intermediate connecting piece are opened and closed with each other, and when the rear connecting piece and the intermediate connecting piece are opened and closed with each other, different force feedbacks can be respectively provided; thus, different opening and closing sequences can be realized between external folding action components through different magnitudes of force feedback; the structural stability of the shaft hinge structure of folding components such as folding mice can also be optimized, making the opening and closing actions of the folding components more stable; and special requirements of certain electronic products for the rotating shaft can also be realized. Therefore, the dual-rotating shaft hinge structure applied to a folding mouse according to the present invention solves the technical problem of how to improve the structural performance of the shaft hinge structure applied to a folding mouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a dual-rotating shaft hinge structure applied to a folding mouse according to the present invention; Figure 2 FIG. is a schematic structural diagram of a dual-rotating shaft hinge structure applied to a folding mouse according to the present invention in another direction; Figure 3 FIG. is an exploded structural diagram of a dual-rotating shaft hinge structure applied to a folding mouse according to the present invention in another direction; Figure 4 FIG. is an exploded structural diagram of a dual-rotating shaft hinge structure applied to a folding mouse according to the present invention in another direction; Figure 5 FIG. is a schematic structural diagram of a dual-rotating shaft hinge structure applied to a folding mouse according to the present invention in a use state. DETAILED DESCRIPTION OF THE INVENTION

[0021] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings. A lot of specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0024] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0027] Please refer to Figures 1 to 4 , a double-rotating shaft hinge structure applied to a folding mouse of the present invention includes: a front connecting piece 1, a rear connecting piece 2, an intermediate connecting piece 3, two flat shafts 4, a first rotation limiting structure 5, two second rotation limiting structures 6 and a third rotation limiting structure 7; the intermediate connecting piece 3 is disposed between the front connecting piece 1 and the rear connecting piece 2, and the two flat shafts 4 are relatively movably inserted into the intermediate connecting piece 3, and two ends of one flat shaft 4 are respectively connected to the front connecting piece 1, and two ends of the other flat shaft 4 are respectively connected to the rear connecting piece 2; the first rotation limiting structure 5 and a second rotation limiting structure 6 are respectively disposed on two sides of one flat shaft 4 relatively, and the first rotation limiting structure 5 and the second rotation limiting structure 6 are respectively correspondingly connected to the front connecting piece 1 and the intermediate connecting piece 3; the other second rotation limiting structure 6 and the third rotation limiting structure 7 are respectively disposed on two sides of the other flat shaft 4 relatively, and the second rotation limiting structure 6 and the third rotation limiting structure 7 are respectively correspondingly connected to the rear connecting piece 2 and the intermediate connecting piece 3.

[0028] Specifically, in the technical solution disclosed by a double-rotating shaft hinge structure applied to a folding mouse according to the present invention, 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 shaft 4, and the flat shaft 4 drives the first rotation limiting structure 5 and a second rotation limiting structure 6 respectively; the first rotation limiting structure 5 and the second rotation limiting structure 6 are used to control the opening and closing angle formed between the front connecting piece 1 and the middle 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 act, and the rear connecting piece 2 drives another flat shaft 4, so that the flat shaft 4 can drive the third rotation limiting structure 7 and another second rotation limiting structure 6 at the same time; the third rotation limiting structure 7 and another second rotation limiting structure 6 can be used to control the rear connecting piece 2 and the middle connecting piece 3 when the rear connecting piece 2 is opened or closed.

[0029] More specifically, the first rotation limiting structure 5, the second rotation limiting structure 6, and the third rotation limiting structure 7 respectively have different adjustment structures and damping structures, so that different adjustment forces and adjustment angles can be provided by the three rotation limiting structures respectively; furthermore, different force feedbacks can be provided when the front connecting piece 1 and the middle connecting piece 3 open and close each other, and when the rear connecting piece 2 and the middle connecting piece 3 open and close each other; thus, different opening and closing sequences can be realized between the external folding action components through different magnitudes of force feedback; the structural stability of the shaft hinge structure of folding components such as folding mice can also be optimized, making the opening and closing actions of the folding components more stable; and special requirements of some electronic products for the shaft can also be realized.

[0030] Further, the first rotation limiting structure 5 includes a first fixed cam 501, a first moving cam 502, and a thin round wire spring 503; the first fixed cam 501 is connected to the middle connecting piece 3, and the first moving cam 502 is movably connected to the first fixed cam 501; the thin round wire spring 503 is respectively connected to the first moving cam 502 and the front connecting piece 1; the first fixed cam 501, the first moving cam 502, and the thin round wire spring 503 are respectively sleeved on a flat shaft 4.

[0031] Further, the two second rotation limiting structures 6 are respectively sleeved on one of the flat shafts 4. Each second limiting structure 6 is provided with a second fixed cam 601, a second moving 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 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. The second fixed cam 601, the second moving cam 602 and the square wire spring 603 are correspondingly sleeved on one of the flat shafts 4.

[0032] Further, the third rotation limiting structure 7 has a third fixed cam 701, a third moving cam 702 and a thick oval wire spring 703. The third fixed cam 701 is connected to the intermediate connecting piece 3. The third moving cam 702 is movably connected to the third fixed cam 701. The thick oval wire spring 703 is respectively connected to the third moving cam 702 and the rear connecting piece 2. The third fixed cam 701, the third moving cam 702 and the thick oval wire spring 703 are respectively sleeved on one of the flat shafts 4.

[0033] Specifically, one side of each of the first fixed cam 501, the second fixed cam 601 and the third fixed cam 701 is connected to the intermediate connecting piece 3, and the other sides of these three all have uneven structures for connecting to the corresponding surfaces of the corresponding first moving cam 502, second moving cam 602 or third moving cam 703.

[0034] More specifically, in a specific embodiment, the first fixed cam 501 has a first connecting portion 501a and a plurality of first positioning convex platforms 501b. The first connecting portion 501a is respectively connected to one of the flat shafts 4 and the intermediate connecting piece 3. The plurality of first positioning convex platforms 501b are evenly distributed on the side surface of the first connecting portion 501a.

[0035] Further, the first moving cam 502 has a first socket portion 502a, a plurality of first deep grooves 502b and a plurality of first shallow grooves 502c. The first socket portion 502a is connected to one of the flat shafts 4. The plurality of first deep grooves 502b and the plurality of first shallow grooves 502c are alternately arranged on one side surface of the first socket portion 502a. Each first deep groove 502b or each first shallow groove 502c is correspondingly movably connected to the first positioning convex platform 501b.

[0036] 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 respectively through a similar first connecting portion 501a. For example, the first connecting portion 501a can be in the shape of a cylinder, which is movably sleeved on the corresponding flat rotating shaft 4, and one of its side surfaces abuts against the side surface of the intermediate connecting piece 3. Thus, the first positioning boss 501b provided on the other side surface thereof can be alternately and movably connected to 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 sleeved portion 502a sleeved on the flat rotating shaft 4 is provided with a square hole matching the outer contour of the flat rotating shaft 4. Thus, when the flat rotating shaft 4 is driven to rotate, the first sleeved portion 502a is simultaneously driven to rotate, and further, the first deep groove 502b or the first shallow groove 502c is alternately engaged 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 elastic force of the spring, and further, makes the angle formed between the front connecting piece 1 and the rear connecting piece 2 at this time constant.

[0037] Furthermore, by the same token, it can be inferred that the second fixed cam 601 has a second connecting portion 601a and a plurality of second positioning bosses 601b; the second connecting portion 601a is respectively connected to a flat rotating shaft 4 and the intermediate connecting piece 3, and a plurality of the second positioning bosses 601b are evenly distributed on the side surface of the second connecting portion 601a.

[0038] Further, the second moving cam 602 has a second socket portion 602a, a plurality of second deep grooves 602b, and a plurality of second shallow grooves 602c; the second socket portion 602a is connected to one of the flat rotating shafts 4, and the plurality of second deep grooves 602b and the plurality of second shallow grooves 602c are alternately arranged on one side surface of the second socket portion 602a, and each of the second deep grooves 602b or each of the second shallow grooves 602c is correspondingly and movably connected to the second positioning boss 601b.

[0039] Further, by the same token, it can be inferred that the third fixed cam 701 has a third connecting portion 701a and a plurality of third positioning bosses 701b; the third connecting portion 701a is respectively connected to one of the flat rotating shafts 4 and the intermediate connecting piece 3, and the plurality of third positioning bosses 701b are evenly distributed on the side surface of the third connecting portion 701a.

[0040] Further, the third moving cam 702 has a third socket portion 702a, a plurality of third deep grooves 702b, and a plurality of third shallow grooves 702c; the third socket portion 702a is connected to one of the flat rotating shafts 4, and the plurality of third deep grooves 702b and the plurality of third shallow grooves 702c are alternately arranged on one side surface of the third socket portion 702a, and each of the third deep grooves 702b or each of the third shallow grooves 702c is correspondingly and movably connected to the third positioning boss 701b.

[0041] It can be easily inferred that the first deep groove 502b, the second deep groove 602b, and the third deep groove 702b may have different dimensional specifications from each other, or may have the same dimensional specifications, mainly depending on the requirements of the application scenario of a dual-rotating-shaft hinge structure for a folding mouse according to the present invention.

[0042] By the same token, the first shallow groove 502c, the second shallow groove 602c, and the third shallow groove 702c may have different dimensional specifications from each other, or may have the same dimensional specifications, mainly depending on the requirements of the application scenario of a dual-rotating-shaft hinge structure for a folding mouse according to the present invention.

[0043] 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 the wire diameters of the two springs are as follows: 1. Control the sequence of opening 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 open later; 2. Control the different torsional forces of the rotating shaft between the front connecting piece 1 and the rear connecting piece 2 for the identification of different rotating shafts.

[0044] Furthermore, the cross-section of the square wire spring 603 is square, and its functions are as follows: 1. It can further enhance the torsional force in a limited space; 2. It can generate damping torsional force and stop and limit the position during the normal operation of the rotating shaft. When encountering destructive force, for example, when the set safe acting force is 5 KGF, if the acting force is greater than 5 KGF, the second moving cam 602 will retreat and bypass the stop position. After passing the position, it can be manually restored. Thus, the dual-rotating shaft hinge structure applied to a folding mouse of the present invention can be protected from damage.

[0045] Furthermore, during the cooperation of the different fixed cams and moving cams mentioned above, when the front connecting piece 1 or the rear connecting piece 2 is closed, a jerky feel can be generated when it is in place through the structure of the positioning boss; moreover, the settings of the deep groove and the shallow groove can be used to identify the sliding position and the stop position, restricting the closing angle.

[0046] In summary, the rotating shafts on the market usually have the defect of complex structure, and moreover, they need to meet a fixed torsional force to achieve the function; when they are used too many times, the torsional force attenuation is serious, resulting in the limitation of the service life. Moreover, when the ordinary rotating shaft structure on the market is opened to the designed maximum angle and then bears the limit pressure, the rotating shaft will be deformed and scrapped. However, the dual-rotating shaft hinge structure applied to a folding mouse of the present invention is designed with a protection mechanism, that is, the distribution design of springs with different cross-sectional shapes and different wire diameters, and the cooperation design of fixed cams and moving cams with different specifications. Thus, when the rotating shaft is subjected to the limit pressure, the damage of the rotating shaft can be avoided, and the rotating shaft can be manually restored.

[0047] For example, as Figure 5As shown, when a user applies a force to the front connecting piece 1 or the rear connecting piece 2, the second rotation limiting structure 6 is provided on both the action side of the front connecting piece 1 and the action side of the rear connecting piece 2. That is, when the force applied is excessive, in the engagement pairing between the second deep groove 602b or the second shallow groove 602c provided on the second moving cam 602 and the second positioning boss 601b, 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 along the axial direction of the flat shaft 4, and the square wire spring 603 absorbs the force acting in this axial direction. Thus, the second moving cam 602 produces a retracting action, avoiding the situation where the rotating shaft is damaged due to excessive applied force. 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 restored automatically or manually; thereby, the state of the rotating shaft can be restored to its original state.

[0048] In summary, a double-rotating shaft hinge structure applied to a folding mouse according to the present invention is respectively provided with a front connecting piece 1, a rear connecting piece 2, an intermediate connecting piece 3, two flat shafts 4, a first rotation limiting structure 5, two second rotation limiting structures 6 and a third rotation limiting structure 7; the intermediate connecting piece 3 is arranged between the front connecting piece 1 and the rear connecting piece 2, and the two flat shafts 4 are relatively movably penetrated through the intermediate connecting piece 3, and two ends of one flat shaft 4 are respectively connected to the front connecting piece 1, and two ends of the other flat shaft 4 are respectively connected to the rear connecting piece 2; the first rotation limiting structure 5 and a second rotation limiting structure 6 are respectively arranged on two sides of one flat shaft 4 relatively, and the first rotation limiting structure 5 and the second rotation limiting structure 6 are respectively correspondingly connected to the front connecting piece 1 and the intermediate connecting piece 3; the other second rotation limiting structure 6 and the third rotation limiting structure 7 are respectively arranged on two sides of the other flat shaft 4 relatively, and the second rotation limiting structure 6 and the third rotation limiting structure 7 are respectively correspondingly connected to the rear connecting piece 2 and the intermediate connecting piece 3. The first rotation limiting structure 5, the second rotation limiting structure 6 and the third rotation limiting structure 7 respectively have different adjustment structures and damping structures. Thus, different adjustment forces and adjustment angles can be provided by the three rotation limiting structures respectively; furthermore, different force feedbacks can be obtained when the front connecting piece 1 and the intermediate connecting piece 3 open and close each other, and when the rear connecting piece 2 and the intermediate connecting piece 3 open and close each other; thus, different sequential opening and closing orders can be realized between external folding action components through different magnitudes of force feedback; the structural stability of the shaft hinge structure of folding components such as folding mice can also be optimized, making the opening and closing actions of the folding components more stable; and special requirements of some electronic products for the shaft can also be realized. Therefore, a double-rotating shaft hinge structure applied to a folding mouse according to the present invention solves the technical problem of how to improve the structural performance of the shaft hinge structure applied to a folding mouse.

[0049] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0050] The above-described embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A double-axis hinge structure for a folding mouse, characterized in that: The invention comprises: a front connecting piece (1), a rear connecting piece (2), an intermediate 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 intermediate connecting piece (3) is arranged between the front connecting piece (1) and the rear connecting piece (2); the two flat rotating shafts (4) are relatively movable and penetrate through the intermediate 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); one flat rotating shaft (4) is connected to the front connecting piece (1) and the other flat rotating shaft (4) is connected to the rear connecting piece (2); 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), and 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); and the second rotation limiting structure (6) and the third rotation limiting structure (7) are respectively arranged opposite to each other on both sides of the other flat rotating shaft (4), and 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 double-axis hinge structure for a foldable mouse according to claim 1, characterized in that: The first rotation limiting structure (5) comprises 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 middle connecting plate (3), and the first movable cam (502) is movably connected to the first fixed cam (501); the thin round wire spring (503) respectively connects the first movable cam (502) and the front connecting plate (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).

3. The double-axis hinge structure for a foldable mouse according to claim 2, characterized in that: The two second rotation limiting structures (6) are respectively sleeved on one of the flat rotating shafts (4), and 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 middle connecting plate (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 plate (1) or the rear connecting plate (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).

4. The double-axis hinge structure for a foldable mouse according to claim 3, characterized in that: The third rotation limiting structure (7) comprises a third fixed cam (701), a third movable cam (702) and a thick round wire spring (703); the third fixed cam (701) is connected to the middle connecting plate (3), and the third movable cam (702) is movably connected to the third fixed cam (701); the thick round wire spring (703) respectively connects the third movable cam (702) and the rear connecting plate (2); the third fixed cam (701), the third movable cam (702) and the thick round wire spring (703) are respectively sleeved on a flat rotating shaft (4).

5. The double-axis hinge structure for a foldable mouse according to claim 4, characterized in that: 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 middle connecting piece (3), and the plurality of first positioning bosses (501b) are evenly distributed on the side of the first connecting portion (501a).

6. The double-axis hinge structure for a foldable mouse according to claim 5, characterized in that: The first movable cam (502) comprises a first sleeve connection portion (502a), a plurality of first deep grooves (502b) and a plurality of first shallow grooves (502c); the first sleeve connection portion (502a) is connected to a flat rotating shaft (4); a plurality of the first deep grooves (502b) and a plurality of the first shallow grooves (502c) are alternately arranged on a side surface of the first sleeve connection portion (502a); each of the first deep grooves (502b) or each of the first shallow grooves (502c) is movably connected to the first positioning boss (501b) accordingly.

7. The double-axis hinge structure for a foldable mouse according to claim 6, characterized in that: The second fixed cam (601) has a second connecting portion (601a) and a plurality of second positioning bosses (601b); the second connecting portion (601a) is respectively connected to a flat rotating shaft (4) and the middle connecting piece (3); and the plurality of second positioning bosses (601b) are evenly distributed on the side of the second connecting portion (601a).

8. The double-shaft hinge structure for a foldable mouse according to claim 7, characterized in that: The second movable cam (602) comprises a second sleeve connection portion (602a), a plurality of second deep grooves (602b) and a plurality of second shallow grooves (602c); the second sleeve connection portion (602a) is connected to a flat rotating shaft (4); a plurality of the second deep grooves (602b) and a plurality of the second shallow grooves (602c) are alternately arranged on a side surface of the second sleeve connection portion (602a); each of the second deep grooves (602b) or each of the second shallow grooves (602c) is movably connected to the second positioning boss (601b) accordingly.

9. The double-axis hinge structure for a foldable mouse according to claim 8, characterized in that: The third fixed cam (701) has a third connecting portion (701a) and a plurality of third positioning bosses (701b); the third connecting portion (701a) is respectively connected to a flat rotating shaft (4) and the middle connecting piece (3), and the plurality of third positioning bosses (701b) are evenly distributed on the side of the third connecting portion (701a).

10. The double-shaft hinge structure for a foldable mouse according to claim 9, characterized in that: The third movable cam (702) comprises a third sleeve connection portion (702a), a plurality of third deep grooves (702b) and a plurality of third shallow grooves (702c); the third sleeve connection portion (702a) is connected to a flat rotating shaft (4); a plurality of the third deep grooves (702b) and a plurality of the third shallow grooves (702c) are alternately arranged on a side surface of the third sleeve connection portion (702a); each of the third deep grooves (702b) or each of the third shallow grooves (702c) is movably connected to the third positioning boss (701b).

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