Hinge for mobile terminal holder

Abstract

The present disclosure provides a hinge for a mobile terminal stand, comprising a first gear, a second gear, a first rotating shaft, a second rotating shaft, a first cam, a second cam, a first elastic member, a third cam, a fourth cam, and a second elastic member, wherein the first rotating shaft is provided with a first limiting portion, the first cam is provided with a second limiting portion cooperating with the first limiting portion, the second gear is provided with a third limiting portion, and the third cam is provided with a fourth limiting portion cooperating with the third limiting portion. The present disclosure also provides a mobile terminal stand. The present disclosure is convenient and quick to operate, has a compact and stable structure, and has high stability and reliability, can better meet the needs and user experience of users, and is convenient for better use in portable, compact, and easy-to-carry mobile terminals such as laptops, tablets, personal digital assistants, smart phones, e-books, learning machines, and game consoles.

Description

Technical Field

[0001] The present disclosure relates to a bracket of a mobile terminal, and more particularly to a hinge of the bracket and the mobile terminal bracket. Background Art

[0002] With the rapid development of science and technology and the continuous progress of society, portable electronic devices such as laptops, tablets (pads), personal digital assistants (PDAs), smartphones, e-books, learning machines, and game consoles are becoming increasingly popular among consumers and have become an indispensable tool in people's work and life. Currently, many of these portable electronic devices are equipped with corresponding stands to ensure stable support, ease of use, improved work efficiency, and protection from scratches and collisions. To better meet user needs and experience, the requirements for stands are also becoming increasingly higher. Summary of the Invention

[0003] The purpose of the present disclosure is to provide a hinge for a mobile terminal stand and a mobile terminal stand, which can solve at least one of the above technical problems. The technical solutions of the present disclosure are as follows:

[0004] The first gear and the second gear are matched and rotated in the same direction, and the first gear can drive the first rotating shaft to rotate synchronously, and the first cam and the first rotating shaft can rotate relative to each other in a circumferential direction and be fixed axially, and the second cam is fixed to the first rotating shaft in a circumferential direction and can slide relative to each other in the axial direction. The first elastic member can provide friction torque for the coordinated movement of the first cam and the second cam, the second gear is coaxially connected to the second rotating shaft, the third cam and the second rotating shaft can rotate relative to each other in a circumferential direction and be fixed axially, and the fourth cam and the second rotating shaft can slide relative to each other in the axial direction, and the second elastic member can provide friction torque for the coordinated movement of the third cam and the fourth cam, a first limiting portion is provided on the first rotating shaft, a second limiting portion cooperating with the first limiting portion is provided on the first cam, a third limiting portion is provided on the second gear, and a fourth limiting portion is provided on the third cam to cooperate with the third limiting portion, so as to close the hinge. When the third cam rotates inwardly to the first opening angle, the cam surface of the third cam and the fourth cam cooperate with each other to reach the top point. As the third cam rotates outwardly beyond the first opening angle, under the action of the second elastic member, the third cam and the fourth cam can automatically cooperate and move to the open support state. When the first gear rotates to the maximum opening angle, the first limiting portion cooperates with the second limiting portion to lock and limit. Between the first opening angle and the maximum opening angle, the first gear can rotate freely, and the third cam and the fourth cam can maintain the open support state. As the first gear rotates inwardly beyond the first opening angle, the third limiting portion cooperates with the fourth limiting portion to drive the third cam to rotate. When the third cam rotates inwardly to the first opening angle, the cam surface of the third cam and the fourth cam cooperates with each other to reach the top point again. As the third cam rotates inwardly beyond the first opening angle, under the action of the second elastic member, the third cam and the fourth cam can automatically cooperate and move again.

[0005] In some embodiments, the first gear is an internal gear, the second gear is an external gear, the second gear is located inside the first gear, and the first gear is meshed with the second gear.

[0006] In some embodiments, the outer surface of the first gear is provided with a first rib for fixed connection, and the outer surface of the third cam is provided with a second rib for fixed connection.

[0007] In some embodiments, the number of teeth on the first gear is twice the number of teeth on the second gear.

[0008] In some embodiments, the third limiting portion is a stopper provided at one end of the second gear, and the fourth limiting portion is a stopper provided at one end of the third cam.

[0009] In some embodiments, a first connecting portion is provided at one end of the first gear, and a first connecting hole connected to one end of the first rotating shaft is provided on the first connecting portion, and the first rotating shaft is fixed to the first connecting hole in a circumferential direction.

[0010] In some embodiments, a first bearing is sleeved on the first connecting portion.

[0011] In some embodiments, the first elastic member is a spring sleeved on the first rotating shaft, one end of the first elastic member presses against the second cam, the other end of the first elastic member presses against the first locking member, and the first locking member can be locked on the first rotating shaft; the second elastic member is a spring sleeved on the second rotating shaft, one end of the second elastic member presses against the fourth cam, the other end of the second elastic member presses against the second locking member, and the second locking member can be locked on the second rotating shaft.

[0012] A mobile terminal bracket comprises a first base plate, a first support plate, a first bracket and a hinge of the mobile terminal bracket, wherein the first support plate is fixedly connected to the first gear, the first rotating shaft is hinged to the first base plate, the third cam is fixedly connected to the first bracket, and the second rotating shaft is hinged to the first base plate. As the first support plate covers the first base plate, the first bracket simultaneously covers the first support plate.

[0013] In some embodiments, a first hole and a second hole are provided on the first bottom plate, the first cam, the second cam and the first elastic member are located in the first hole, and the third cam, the fourth cam and the second elastic member are located in the second hole.

[0014] The beneficial effects of the present disclosure are:

[0015] The first base plate is hinged to the first support plate and the first bracket respectively through the hinge, the first support plate is used to support and place the corresponding mobile terminal, the first support plate is fixedly connected to the first gear, the first rotating shaft is hinged to the first base plate, the third cam is fixedly connected to the first bracket, and the second rotating shaft is hinged to the first base plate. When the mobile terminal bracket is in a closed state, the first support plate covers the first base plate, and the first bracket also covers the first support plate;

[0016] When the first support plate rotates outward relative to the first base plate to open to the first opening angle, the first support plate drives the first bracket to rotate synchronously, so that the first gear and the third cam rotate synchronously, the first gear drives the first rotating shaft and the second gear to rotate synchronously, the second cam rotates synchronously with the first rotating shaft, the second cam cooperates with the first cam, and the second cam slides along the axial direction of the first rotating shaft. The first elastic member can provide friction torque for the coordinated movement of the first cam and the second cam. Under the action of the second elastic member, the third cam and the fourth cam cooperate with each other, and the fourth cam slides along the axial direction of the second rotating shaft. The second elastic member can provide friction torque for the coordinated movement of the third cam and the fourth cam.

[0017] When the first support plate rotates outward to the first opening angle, the cam surfaces of the third cam and the fourth cam cooperate with each other and reach the apex. As the first support plate and the first bracket rotate outward through the first opening angle, under the action of the second elastic member, the third cam and the fourth cam can automatically cooperate and move, so that the first bracket rotates to the open support state, for example, the first bracket is located at a position horizontal to the first bottom plate and is opened and flat.

[0018] When the first support plate rotates to the maximum opening angle, the first limiting portion of the first rotating shaft cooperates with the second limiting portion of the first cam to lock and limit, so that the first support plate cannot continue to rotate outward. The first support plate can rotate freely between the first opening angle and the maximum opening angle, and the first bracket can maintain the open support state;

[0019] As the first support plate rotates inwardly through the first opening angle, the third limiting portion of the second gear cooperates with the fourth limiting portion of the third cam, so that the second gear drives the third cam to rotate synchronously, that is, the first bracket rotates inward synchronously;

[0020] When the first bracket rotates inwardly to the first opening angle, the cam surfaces of the third cam and the fourth cam cooperate with each other reach the top again. As the first bracket rotates inwardly through the first opening angle, under the action of the second elastic member, the third cam and the fourth cam can automatically cooperate and move again, and finally the mobile terminal bracket returns to the closed state. The operation is convenient and fast, the structure is compact and stable, and the stability and reliability are high. It can better meet the needs and experience of users, and is convenient for better use in lightweight, compact and portable mobile terminals such as laptops, tablets, personal digital assistants, smart phones, e-books, learning machines, and game consoles.

[0021] In addition, in the technical solutions disclosed herein, anything not specifically stated can be implemented by conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 An exploded view of a hinge of a mobile terminal holder according to an embodiment of the present disclosure.

[0024] Figure 2 An exploded view of a hinge of a mobile terminal holder according to an embodiment of the present disclosure.

[0025] Figure 3 Schematic diagram of the structure of the first gear, the second gear, the first rotating shaft, the first cam, the third cam and the fourth cam in one embodiment of the present disclosure.

[0026] Figure 4 This is a structural schematic diagram of an embodiment of the present disclosure when the cam surfaces of the third cam and the fourth cam of the hinge of the mobile terminal bracket cooperate with each other and reach the apex.

[0027] Figure 5 The present invention is a structural diagram of the cooperation between the first limiting portion and the second limiting portion of the hinge of the mobile terminal bracket according to an embodiment of the present invention.

[0028] Figure 6 The present invention is a schematic structural diagram of the cooperation between the third limiting portion and the fourth limiting portion of the hinge of the mobile terminal bracket according to an embodiment of the present invention.

[0029] Figure 7 The figure is a structural diagram of a mobile terminal stand in a closed state according to an embodiment of the present disclosure.

[0030] Figure 8 This is a structural schematic diagram of a mobile terminal bracket according to an embodiment of the present disclosure, in which the first support plate and the first bracket are both located at a first opening angle.

[0031] Figure 9 This is a structural schematic diagram of a mobile terminal bracket according to an embodiment of the present disclosure, in which the first support plate is located at a first opening angle and the first bracket is located in an open supporting state.

[0032] Figure 10 This is a structural schematic diagram of a mobile terminal bracket according to an embodiment of the present disclosure, in which the first support plate is located at a maximum opening angle and the first bracket is located in an open supporting state.

[0033] Figure 11This is a structural schematic diagram of a mobile terminal holder according to an embodiment of the present disclosure, in which the first holder is located at a first opening angle.

[0034] Figure 12 The figure is an exploded view of a mobile terminal bracket according to an embodiment of the present disclosure.

[0035] 1 , a first gear 1 , a first connecting portion 11 , a first connecting hole 12 , a first rib 13 , a first bearing 14 , a second gear 2 , a third limiting portion 21 , a first rotating shaft 3 , a first limiting portion 31 , a first locking member 32 , a second rotating shaft 4 , a second locking member 41 , a first cam 51 , a second limiting portion 511 , a first protrusion 512 , a second cam 52 , a first elastic member 53 , a third cam 61 , a fourth limiting portion 611 , a second rib 612 , a fourth cam 62 , a second protrusion 621 , a second elastic member 63 , a first base plate 7 , a first hole body 71 , a second hole body 72 , a second connecting portion 73 , a third connecting portion 74 , a first plug 75 , a first support plate 8 , a fourth connecting portion 81 , a first bracket 9 , and a fifth connecting portion 91 . DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present disclosure, rather than all of the embodiments, and are only used to explain the present disclosure and are not intended to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0037] In the description of the present disclosure, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "two ends", "both sides", "bottom", "top", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary", etc. are used for descriptive purposes only and can be simply used to more clearly distinguish different components, but cannot be understood as indicating or implying relative importance.

[0038] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0039] See also Figures 1 to 12 The figure schematically shows a hinge of a mobile terminal holder and a mobile terminal holder according to the present disclosure. The hinge of the mobile terminal holder includes a first gear 1, a second gear 2, a first rotating shaft 3, a second rotating shaft 4, a first cam 51, a second cam 52, a first elastic member 53, a third cam 61, a fourth cam 62, and a second elastic member 63. The first gear 1 cooperates with the second gear 2, and the first gear 1 and the second gear 2 rotate in the same direction. The first gear 1 and the second gear 2 can be directly meshed, or at least one transition gear can be provided between the first gear 1 and the second gear 2 to achieve the same-direction rotation of the first gear 1 and the second gear 2 through the transition gear.

[0040] The first gear 1 can drive the first rotating shaft 3 to rotate synchronously. The first cam 51 and the second cam 52 are arranged on the first rotating shaft 3. The first cam 51 and the first rotating shaft 3 can rotate relative to each other in the circumferential direction and are fixed in the axial direction. The second cam 52 is fixed in the circumferential direction and can slide relative to each other in the axial direction. The first cam 51 and the second cam 52 cooperate with each other. The first cam 51 is located between the second cam 52 and the first gear 1. The first elastic member 53 makes the first cam 51 and the second cam 52 elastically cooperate, that is, the first elastic member 53 can provide friction torque for the cooperative movement of the first cam 51 and the second cam 52.

[0041] The second gear 2 is coaxially connected to the second rotating shaft 4, and the third cam 61 and the fourth cam 62 are arranged on the second rotating shaft 4. The third cam 61 and the second rotating shaft 4 can rotate relative to each other in the circumferential direction and are fixed axially. The fourth cam 62 and the second rotating shaft 4 can slide relative to each other in the axial direction. The third cam 61 cooperates with the fourth cam 62. The third cam 61 is located between the fourth cam 62 and the second gear 2. The second elastic member 63 makes the third cam 61 and the fourth cam 62 elastically cooperate, that is, the second elastic member 63 can provide friction torque for the cooperative movement of the third cam 61 and the fourth cam 62. A first limiting portion 31 is provided on the first rotating shaft 3, a second limiting portion 511 cooperating with the first limiting portion 31 is provided on the first cam 51, a third limiting portion 21 is provided on the second gear 2, and a fourth limiting portion 611 cooperating with the third limiting portion 21 is provided on the third cam 61. The number, size and arrangement of the first limiting portion 31, the second limiting portion 511, the third limiting portion 21 and the fourth limiting portion 611 are determined according to specific circumstances.

[0042] The first gear 1 is fixedly connected to the first support plate 8, the first rotating shaft 3 is hingedly connected to the first base plate 7, the third cam 61 is fixedly connected to the first bracket 9, and the second rotating shaft 4 is hingedly connected to the first base plate 7. It should be noted that the closed state herein refers to the first support plate 8 covering the first base plate 7 and the first bracket 9 simultaneously covering the first support plate 8. The first opening angle refers to the angle at which the first support plate 8 and the first bracket 9 are rotated outward relative to the first base plate 7, and the maximum opening angle refers to the angle at which the first support plate 8 is rotated outward relative to the first base plate 7. Since the first gear 1 is fixedly connected to the first support plate 8 and the third cam 61 is fixedly connected to the first bracket 9, the rotation angle of the first gear 1 is equivalent to the rotation angle of the first support plate 8, and the rotation angle of the third cam 61 is equivalent to the rotation angle of the first bracket 9. For ease of explanation, the closed state is set to 0°, the first opening angle is set to 80°, the maximum opening angle is set to 135°, and the open support state of the first bracket 9 is set to 180°. Of course, these angles can also be other appropriate values depending on the specific situation.

[0043] During use, in the closed state, see Figure 7 As shown, the first support plate 8 is covered on the first base plate 7, and the first bracket 9 is also covered on the first support plate 8, that is, the rotation angle of the first support plate 8 and the rotation angle of the first bracket 9 are both 0°;

[0044] During the process of the first support plate 8 rotating outward from 0° to 80°, the first support plate 8 drives the first bracket 9 to rotate synchronously, so that the first gear 1 and the third cam 61 rotate synchronously, the first gear 1 drives the first rotating shaft 3 and the second gear 2 to rotate synchronously, the second cam 52 rotates synchronously with the first rotating shaft 3, the second cam 52 cooperates with the first cam 51, the second cam 52 slides along the axial direction of the first rotating shaft 3, the first elastic member 53 can provide friction torque for the coordinated movement of the first cam 51 and the second cam 52, under the action of the second elastic member 63, the third cam 61 and the fourth cam 62 cooperate with each other, the fourth cam 62 slides along the axial direction of the second rotating shaft 4, and the second elastic member 63 can provide friction torque for the coordinated movement of the third cam 61 and the fourth cam 62;

[0045] When the first support plate 8 is rotated outward to 80 degrees, the cam surfaces of the third cam 61 and the fourth cam 62 that cooperate with each other reach the top point. As the first support plate 8 and the first bracket 9 are rotated outward by 80 degrees, under the action of the second elastic member 63, the third cam 61 and the fourth cam 62 can automatically cooperate with each other to move, so that the first bracket 9 is rotated to 180 degrees to be opened and flattened. The first bracket 9 is in the open support state. Figure 8 、 Figure 9 As shown;

[0046] When the first support plate 8 rotates to 135°, the first limiting portion 31 of the first rotating shaft 3 cooperates with the second limiting portion 511 of the first cam 51 to lock and limit, so that the first support plate 8 cannot continue to rotate outward. The first support plate 8 can rotate freely between 80° and 135°, and the first bracket 9 can maintain the open support state. Figure 10 As shown,

[0047] During the closing process, as the first support plate 8 rotates inwardly through 80°, the third limiting portion 21 of the second gear 2 cooperates with the fourth limiting portion 611 of the third cam 61, so that the second gear 2 drives the third cam 61 to rotate synchronously, that is, the first bracket 9 rotates inward synchronously. Within the other rotation angle ranges, the third limiting portion 21 and the fourth limiting portion 611 will not collide with each other.

[0048] When the first bracket 9 is rotated inward from 180° to 80°, see Figure 11 As shown, the cam surfaces of the third cam 61 and the fourth cam 62 that cooperate with each other reach the apex again. As the first bracket 9 rotates inward by 80°, under the action of the second elastic member 63, the third cam 61 and the fourth cam 62 can automatically cooperate with each other and move. Finally, the first support plate 8 is covered on the first base plate 7, and the first bracket 9 is also covered on the first support plate 8 to reach a closed state.

[0049] The first gear 1 is an internal gear, and the second gear 2 is an external gear. The second gear 2 is located inside the first gear 1. The first gear 1 and the second gear 2 are engaged with each other. The first gear 1 can drive the second gear 2 to rotate synchronously in the same direction. The structure is more compact, stable, and smaller in size.

[0050] The outer surface of the first gear 1 is provided with a first rib 13 for fixed connection. The first rib 13 facilitates the fixed connection between the first gear 1 and the first support plate 8. The outer surface of the third cam 61 is provided with a second rib 612 for fixed connection. The first rib 13 facilitates the fixed connection between the third cam 61 and the first bracket 9. The number and arrangement of the first rib 13 and the second rib 612 are determined according to the specific situation.

[0051] The number of teeth on the first gear 1 is twice that on the second gear 2, meaning the angular velocity of the second gear 2 is twice that of the first gear 1. During the closing process, the first support plate 8 rotates inward from 80° to 30°. The third stopper 21 of the second gear 2 cooperates with the fourth stopper 611 of the third cam 61, allowing the second gear 2 to drive the third cam 61 to rotate synchronously, causing the first bracket 9 to rotate inward from 180° to 80°, facilitating rapid closing of the first bracket 9. Of course, the number of teeth on the first gear 1 and the number of teeth on the second gear 2 may also be other multiples.

[0052] The third limiting portion 21 is a stopper provided at one end of the second gear 2, and the fourth limiting portion 611 is a stopper provided at one end of the third cam 61. The third limiting portion 21 can be two symmetrically provided, and the fourth limiting portion 611 can be two symmetrically provided. Only when the driven first bracket 9 is rotated inward from 180° to 80°, the third limiting portion 21 will cooperate with the fourth limiting portion 611. Within the other rotation angle ranges, the third limiting portion 21 and the fourth limiting portion 611 will not collide or cooperate, which is more stable and reliable.

[0053] A first connecting portion 11 is provided at one end of the first gear 1, proximate to the first cam 51. A first connecting hole 12 is provided on the first connecting portion 11, which is connected to one end of the first rotating shaft 3. The first rotating shaft 3 and the first connecting hole 12 are circumferentially fixed. For example, the first connecting hole 12 may be a D-shaped hole, a waist-shaped hole, etc. The first rotating shaft 3 is provided with a connecting portion that matches the first connecting hole 12. After the first rotating shaft 3 and the first connecting hole 12 are connected, the first rotating shaft 3 and the first connecting hole 12 cannot rotate relative to each other in the circumferential direction, thereby enhancing operation. The first connecting portion 11 is cylindrical and is sleeved with a first bearing 14 to facilitate better rotation of the first gear 1.

[0054] The first limiting portion 31 is a stopper provided on the first rotating shaft 3, and the second limiting portion 511 is a stopper provided at one end of the first cam 51 close to the first gear 1. The first locking member 32 can make the first cam 51 and the second cam 52 elastically cooperate with each other. At the same time, the first limiting portion 31 can also be pressed against the end face of the first cam 51, so as to better provide friction torque.

[0055] The first elastic member 53 is a spring mounted on the first rotating shaft 3. One end of the first elastic member 53 presses against the second cam 52, and the other end of the first elastic member 53 presses against the first locking member 32, allowing the first locking member 32 to be locked to the first rotating shaft 3. The second elastic member 63 is a spring mounted on the second rotating shaft 4. One end of the second elastic member 63 presses against the fourth cam 62, and the other end of the second elastic member 63 presses against the second locking member 41, allowing the second locking member 41 to be locked to the second rotating shaft 4. The first locking member 32 and the second locking member 41 can be lock nuts or other suitable components known in the art.

[0056] A mobile terminal holder includes a first base plate 7, a first support plate 8, a first bracket 9, and a hinge for the mobile terminal holder. The first support plate 8 is fixedly connected to the first gear 1, the first rotating shaft 3 is hinged to the first base plate 7, the third cam 61 is fixedly connected to the first bracket 9, and the second rotating shaft 4 is hinged to the first base plate 7. That is, the first support plate 8 and the first bracket 9 are respectively hinged to the first base plate 7 via the hinge, and the first support plate 8 and the first bracket 9 can be opened and closed relative to the first base plate 7. The first support plate 8 is used to support and place mobile terminals such as laptop computers, tablet computers, personal digital assistants, smart phones, e-books, learning machines, and game consoles. The mobile terminals can be connected to the first support plate 8 by magnetic adsorption or fixedly connected to the first support plate 8. A keyboard is provided on the first base plate 7, and the keyboard can also be integrally formed with the first base plate 7. The hinge of the mobile terminal holder can be one or two or more hinges arranged symmetrically.

[0057] In the closed state, the first support plate 8 covers the first base plate 7, and the first bracket 9 simultaneously covers the first support plate 8. In the open state, the first support plate 8 can freely rotate between 80° and 135°, and the first bracket 9 rotates to 180° to maintain the open support state. The weight of the mobile terminal placed on the first support plate 8 may cause problems such as the center of gravity shifting forward. The first bracket 9 can provide more stable support and prevent tipping. When the first bracket 9 rotates to 180° to the open support state, the cam surfaces of the third cam 61 and the fourth cam 62 can reach the lowest point, facilitating self-locking. Only when a certain force is applied can the first bracket 9 be released from the open support state and closed, which is safer and more reliable. The same applies to the closed state.

[0058] The first base plate 7 is provided with a first hole 71 and a second hole 72. The first cam 51, the second cam 52, and the first elastic member 53 are located in the first hole 71, while the third cam 61, the fourth cam 62, and the second elastic member 63 are located in the second hole 72, resulting in a more compact and stable structure. The first hole 71 may also be provided with a slot that mates with the first bearing 14. A first protrusion 512 is provided on the outer surface of the first cam 51. A slot that mates with the first protrusion 512 is provided within the first hole 71, preventing the first cam 51 from rotating within the first hole 71. The second cam 52 can slide axially along the first shaft 3 and simultaneously along the first hole 71. A second protrusion 621 is provided on the outer surface of the fourth cam 62. A slot that mates with the second protrusion 621 is provided within the second hole 72, ensuring that the fourth cam 62 can only slide axially along the second shaft 4 and the first hole 71.

[0059] The first base plate 7 is provided with a second connecting portion 73 and a third connecting portion 74. The second connecting portion 73 and the third connecting portion 74 are generally cylindrical. A first hole 71 axially extends through the second connecting portion 73, and a second hole 72 axially extends through the third connecting portion 74. The first support plate 8 is provided with a fourth connecting portion 81, which is provided with a third hole fixedly connected to the first gear 1. The first bracket 9 is provided with a fifth connecting portion 91, and the fifth connecting portion 91 is provided with a fourth hole fixedly connected to the third cam 61. The fourth connecting portion 81 and the fifth connecting portion 91 are also generally cylindrical. A clearance zone is formed between the second connecting portion 73 and the third connecting portion 74 to cooperate with the fourth connecting portion 81 and the fifth connecting portion 91. The first gear 1 and the third hole can be fixedly connected by a tight fit, interference fit, adhesive connection, or other methods. The third cam 61 and the fourth hole are similarly connected. A first plug 75 can also be provided at one end of the first hole 71.

[0060] Compared with the prior art, the advantages of the present invention are as follows: as the first support plate 8 and the first bracket 9 rotate outward by 80°, under the action of the second elastic member 63, the third cam 61 and the fourth cam 62 can automatically cooperate and move, so that the first bracket 9 rotates to 180° to open and flatten, and the first bracket 9 is in an open support state. The first limiting portion 31 of the first rotating shaft 3 cooperates with the second limiting portion 511 of the first cam 51 to lock and limit, thereby limiting the maximum opening angle of the first support plate 8. In the open state, the first support plate 8 can rotate freely between 80° and 135°, and the first bracket 9 rotates to 180° to maintain the open support state. During the closing process, the first support plate 8 rotates inward from 80° to 30°, and the third limiting portion 21 of the second gear 2 cooperates with the fourth limiting portion 611 of the third cam 61, so that the second gear 2 drives the third cam 61 to rotate synchronously, so that the first bracket 9 rotates inward from 180° to 80°, which facilitates the rapid closing of the first bracket 9. It is easy and fast to operate, has a compact and stable structure, and has high stability and reliability. It can better meet the needs and experience of users, and is convenient for better use in lightweight, compact and portable mobile terminals such as laptops, tablets, personal digital assistants, smart phones, e-books, learning machines, and game consoles.

[0061] The above descriptions are merely some embodiments of the present disclosure and are intended to illustrate the technical solutions of the present disclosure, not to limit them. It should be understood that those skilled in the art may make modifications or substitutions based on the above descriptions without departing from the inventive concept of the present disclosure, and all such modifications and substitutions shall fall within the scope of protection of the appended claims of the present disclosure. In such cases, all details may be replaced with equivalent elements, and the materials, shapes, and dimensions may be arbitrary.

Claims

1. The hinge of the mobile terminal bracket is characterized by: The gear shift mechanism of claim 1, wherein the first gear and the second gear cooperate to rotate in the same direction, the first gear can drive the first shaft to rotate synchronously, the first cam and the first shaft can rotate relative to each other in a circumferential direction and are fixed in an axial direction, the second cam is fixed in a circumferential direction and can slide relative to each other in an axial direction, the first elastic member can provide friction torque for the coordinated movement of the first cam and the second cam, the second gear is coaxially connected to the second shaft, the third cam and the second shaft can rotate relative to each other in a circumferential direction and are fixed in an axial direction, the fourth cam and the second shaft can slide relative to each other in an axial direction, and the second elastic member can provide friction torque for the coordinated movement of the third cam and the fourth cam, a first limiting portion is provided on the first shaft, a second limiting portion cooperating with the first limiting portion is provided on the first cam, a third limiting portion is provided on the second gear, and a fourth limiting portion cooperating with the third limiting portion is provided on the third cam. In the process of rotating outward from a closed state to a first open angle, the first gear and the third cam The wheels rotate synchronously, the first cam cooperates with the second cam, and the third cam cooperates with the fourth cam. When the third cam rotates outward to the first opening angle, the cam surface of the third cam and the fourth cam cooperates with each other reaches the top point. As the third cam rotates outward beyond the first opening angle, under the action of the second elastic member, the third cam and the fourth cam can automatically cooperate to move so that the mobile terminal bracket is in an open support state. When the first gear rotates to the maximum opening angle, the first limiting portion cooperates with the second limiting portion to lock and limit. Between the first opening angle and the maximum opening angle, the first gear can rotate freely, and the third cam and the fourth cam can keep the mobile terminal bracket in the open support state. As the first gear rotates inward beyond the first opening angle, the third limiting portion cooperates with the fourth limiting portion to drive the third cam to rotate. When the third cam rotates inward to the first opening angle, the cam surface of the third cam and the fourth cam cooperates with each other reaches the top point again. As the third cam rotates inward beyond the first opening angle, under the action of the second elastic member, the third cam and the fourth cam can automatically cooperate to move again. The first gear is an internal gear, the second gear is an external gear, the second gear is located inside the first gear, and the first gear is meshed with the second gear; The outer surface of the first gear is provided with a first rib for fixed connection, and the outer surface of the third cam is provided with a second rib for fixed connection; The number of teeth on the first gear is twice the number of teeth on the second gear.

2. The hinge of the mobile terminal bracket according to claim 1, characterized in that: The third limiting portion is a stopper provided at one end of the second gear, and the fourth limiting portion is a stopper provided at one end of the third cam.

3. The hinge of the mobile terminal holder according to claim 1, characterized in that: A first connecting portion is provided at one end of the first gear. A first connecting hole connected to one end of the first rotating shaft is provided on the first connecting portion. The first rotating shaft is fixed to the first connecting hole in a circumferential direction.

4. The hinge of the mobile terminal holder according to claim 3, characterized in that: The first connecting portion is sleeved with a first bearing.

5. The hinge of the mobile terminal holder according to claim 1, characterized in that: The first elastic member is a spring sleeved on the first rotating shaft, one end of the first elastic member presses against the second cam, the other end of the first elastic member presses against the first locking member, and the first locking member can be locked on the first rotating shaft. The second elastic member is a spring sleeved on the second rotating shaft, one end of the second elastic member presses against the fourth cam, the other end of the second elastic member presses against the second locking member, and the second locking member can be locked on the second rotating shaft.

6. A mobile terminal bracket, characterized in that: The hinge comprises a first base plate, a first support plate, a first bracket and the mobile terminal bracket according to any one of claims 1 to 5, wherein the first support plate is fixedly connected to the first gear, the first rotating shaft is hinged to the first base plate, the third cam is fixedly connected to the first bracket, and the second rotating shaft is hinged to the first base plate. As the first support plate covers the first base plate, the first bracket simultaneously covers the first support plate.

7. The mobile terminal bracket according to claim 6, characterized in that: A first hole body and a second hole body are provided on the first bottom plate. The first cam, the second cam and the first elastic member are located in the first hole body. The third cam, the fourth cam and the second elastic member are located in the second hole body.

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