Electric hinge device and electronic equipment

Abstract

The invention relates to the technical field of electronic equipment, and provides an electric hinge device and electronic equipment. The first driving mechanism comprises a first motor and a first reduction gearbox; the first driving mechanism and the second driving mechanism are arranged side by side, and the second driving mechanism comprises a second motor and a second reduction gearbox; a first gear transmission mechanism and a second gear transmission mechanism; when the screen is in an unfolded state and the deformation monitoring piece is used for monitoring that folding marks exist in a folding area of the screen, the resistance value of the deformation monitoring piece changes, and when the resistance value of the deformation monitoring piece is larger than a preset threshold resistance, the input voltage of the first motor and the input voltage of the second motor are controlled to be direct-current voltage. Therefore, the first motor and the second motor emit heat to heat the folding area of the screen. Compared with the prior art, the electric hinge device can be opened and closed synchronously on the two sides, creases are reduced, and the user experience is improved.

Description

[Technical field]

[0001] The present invention relates to the technical field of electronic equipment, and in particular to an electric hinge device and electronic equipment. [Background technology]

[0002] With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among the many mobile devices, foldable electronic devices, such as foldable mobile phones, foldable tablets, and laptops, are favored by consumers because of their portability and large display screens. Foldable electronic devices achieve foldable functions through hinges. Among them, foldable electronic devices usually have multiple usage states, such as folded, flattened, and hovering; in order to make the device more stable in different folding states, a certain amount of rotational resistance and locking force are usually artificially added inside the hinge, such as friction resistance, mechanical locking force, and magnetic locking force.

[0003] In the related technology, the electronic device generally includes a first body, a second body and an opening and closing structure for connecting the first body and the second body. A motor is introduced into the hinge, and the hinge is automatically opened and closed by the motor drive, thereby driving the opening and closing of the first body and the second body, thereby improving the opening and closing experience of the foldable electronic device.

[0004] However, the first body and the second body of the above-mentioned electronic device have a large rotational clearance and need to be bent manually, with a low degree of intelligence, which is inconvenient and laborious for users, and the creases are relatively flat in the initial stage of use and are almost invisible; but due to the softness of the material, mechanical stress will appear on the screen surface, and the creases will be more obvious after long-term use, resulting in an obvious concave mark in the middle of the screen, and the user experience effect is poor.

[0005] Therefore, it is necessary to provide a new electric hinge device to solve the above technical problems. [Summary of the invention]

[0006] The object of the present invention is to provide an electric hinge device with dual output shafts coupled and driven by a gear set, so that both sides can be opened and closed synchronously, creases can be reduced, and user experience can be improved.

[0007] In order to achieve the above-mentioned object, in a first aspect, an embodiment of the present invention provides an electric hinge device for adjusting the automatic opening and closing of a screen, wherein the screen includes a folding area, which includes:

[0008] Base;

[0009] A first driving mechanism, the first driving mechanism comprising a first motor fixed to the base and a first reduction box fixed to the base and drivingly connected to the first motor;

[0010] A second driving mechanism, the second driving mechanism and the first driving mechanism are arranged side by side, the second driving mechanism includes a second motor fixed to the base and a second reduction gearbox fixed to the base and drivingly connected to the second motor; the folding area is located on the side of the first motor and the second motor away from the base;

[0011] A first gear transmission mechanism, the first gear transmission mechanism is drivingly connected to the output end of the first reduction gearbox of the first driving mechanism;

[0012] A second gear transmission mechanism, the second gear transmission mechanism is drivingly connected to the output end of the second reduction gearbox of the second driving mechanism; the first gear transmission mechanism and the second gear transmission mechanism are coupled to form a synchronous transmission;

[0013] A first hinge mechanism, the first hinge mechanism is installed on the base, the first gear transmission mechanism and the second gear transmission mechanism are respectively drivingly connected to the first hinge mechanism, and are used to drive the first hinge mechanism to perform synchronous folding or unfolding; and,

[0014] A deformation monitoring sheet, the deformation monitoring sheet is fixedly attached to the side of the folding area close to the first motor and the second motor; when the screen is in the unfolded state, the deformation monitoring sheet is used to monitor whether there are creases in the folding area of the screen. If there are creases in the folding area, the resistance value of the deformation monitoring sheet will change. When the resistance value of the deformation monitoring sheet is greater than the preset threshold resistance, the input voltage of the first motor and the second motor is controlled to be a DC voltage, so that the first motor and the second motor generate heat to heat the folding area of the screen.

[0015] Preferably, the electric hinge device further includes a bracket, the bracket is fixed to the base, and the first reduction gearbox and the second reduction gearbox are respectively fixed to the bracket.

[0016] Preferably, the first gear transmission mechanism includes a first gear, a second gear meshing with the first gear, a third gear coaxially driving with the second gear, a fourth gear meshing with the third gear, and a first output shaft fixed to the end of the fourth gear away from the first motor, and the first output shaft is connected to the first hinge mechanism;

[0017] The second gear transmission mechanism includes a fifth gear, a sixth gear meshing with the fifth gear, a seventh gear coaxially driving with the sixth gear, an eighth gear meshing with the seventh gear, and a second output shaft fixed to the end of the eighth gear away from the first motor, and the second output shaft is connected to the first hinge mechanism; the second gear is coupled to the sixth gear.

[0018] Preferably, the diameter of the first gear is equal to the diameter of the third gear, and the diameter of the second gear is equal to the diameter of the fourth gear; the diameter of the second gear is greater than the diameter of the first gear;

[0019] The diameter of the first gear is equal to the diameter of the fifth gear, the diameter of the second gear is equal to the diameter of the sixth gear, the diameter of the third gear is equal to the diameter of the seventh gear, and the diameter of the fourth gear is equal to the diameter of the eighth gear.

[0020] Preferably, the electric hinge device also includes a fixing plate, which is fixed to the base, and the fixing plates are respectively arranged between the first gear and the third gear and between the fifth gear and the seventh gear, and the first gear to the eighth gear are respectively rotatably connected with the fixing plates.

[0021] Preferably, the electric hinge device also includes a fixing member, the fixing member is provided with an arc-shaped surface, the fixing member is fixed to the base, the fixing plate is inserted and fixed to the fixing member, and the first gear, the second gear, the fifth gear and the sixth gear are respectively rotatably set on the arc-shaped surface.

[0022] Preferably, the first reduction gearbox and the second reduction gearbox are both 3-stage planetary reduction gearboxes.

[0023] Preferably, the first hinge mechanism comprises:

[0024] A first slider and a second slider, wherein the first slider is arranged opposite to the second slider, and one end of the first slider close to the second slider and one end of the second slider close to the first slider are respectively connected to the first gear transmission mechanism and the second gear transmission mechanism; the first slider is sleeved and fixed to the first output shaft, and the second slider is sleeved and fixed to the second output shaft;

[0025] a first fixed block, the first fixed block being fixed to the base and being located on a side of the first slider and the second slider away from the first driving mechanism and the second driving mechanism; an end of the first output shaft being rotatably connected to the first fixed block, and an end of the second output shaft being rotatably connected to the first fixed block;

[0026] A first swing arm and a second swing arm, wherein the first swing arm and the second swing arm are arranged side by side, and ends of the first swing arm and the second swing arm close to each other are respectively rotatably connected to the first fixing block; and

[0027] A first connecting member and a second connecting member, the first connecting member and the second connecting member are located on opposite sides of the first fixing block, one end of the first slider away from the second slider forms a sliding connection with the first connecting member, one end of the first swing arm away from the first fixing block forms a rotational connection with the first connecting member, one end of the second slider away from the first slider forms a sliding connection with the second connecting member, and one end of the second swing arm away from the first fixing block forms a rotational connection with the second connecting member.

[0028] Preferably, the first connecting member includes a first connecting body, a first T-shaped groove and a first arc-shaped groove formed by penetrating from the side of the first connecting body close to the first fixing block to the side away from the first fixing block; one end of the first slider away from the second slider is arranged in the first T-shaped groove and forms a sliding connection, and one end of the first swing arm away from the second swing arm is arranged in the first arc-shaped groove and forms a rotational connection;

[0029] The second connecting member includes a second connecting body, a second T-shaped groove and a second arc-shaped groove formed by penetrating from the side of the second connecting body close to the first fixing block to the side away from the first fixing block; one end of the second slider away from the first slider is arranged in the second T-shaped groove and forms a sliding connection, and one end of the second swing arm away from the first swing arm is arranged in the second arc-shaped groove and forms a rotational connection.

[0030] Preferably, the electric hinge device further includes a second hinge mechanism fixed to the base and located at the ends of the first driving mechanism and the second driving mechanism away from the first hinge mechanism, the second hinge mechanism is arranged opposite to the first hinge mechanism; and the second hinge mechanism has the same structure as the first hinge mechanism.

[0031] Preferably, the electric hinge device further includes a conductive member, the conductive member is fixed to the base and located between the first driving mechanism and the second driving mechanism, and the conductive member is electrically connected to the first driving mechanism, the second driving mechanism and the deformation monitoring piece respectively.

[0032] In a second aspect, an embodiment of the present invention provides an electronic device, including a first body, a second body, a control switch, a power supply module, a driving module, and the electric hinge device as described above; the power supply module is fixed inside the first body and / or the second body, and the power supply module is respectively used to supply power to the driving module and the deformation monitoring sheet; the screen simultaneously covers and is fixed to the sides of the first body, the electric hinge device, and the second body away from the base; the control switch controls the driving module to work, the first body and the second body are respectively located on opposite sides of the base, and the first body and the second body are respectively fixed to opposite sides of the first hinge mechanism; the driving module is respectively electrically connected to the first driving mechanism and the second driving mechanism, and is used to respectively control the first driving mechanism and the second driving mechanism to work.

[0033] Preferably, the electronic device further includes a first support plate, a second support plate, and a third support plate arranged side by side in sequence; the first support plate, the second support plate, and the third support plate are respectively installed on the first hinge mechanism, the first support plate, the second support plate, and the third support plate are all located below the screen, and the second support plate is located below the folding area; the first support plate and the third support plate are folded or unfolded synchronously with the first hinge mechanism; the deformation monitoring sheet is located between the folding area and the second support plate.

[0034] Preferably, a recessed avoidance position is formed on the side of the second support plate close to the screen and facing away from the screen, and the deformation monitoring sheet is located in the avoidance position.

[0035] Compared with the related art, in the electric hinge device of the present invention, by relatively installing the first driving mechanism and the second driving mechanism on the base, the first driving mechanism includes a first motor fixed to the base and a first reduction gearbox fixed to the base and in transmission connection with the first motor; the second driving mechanism is arranged side by side with the first driving mechanism, and the second driving mechanism includes a second motor fixed to the base and a second reduction gearbox fixed to the base and in transmission connection with the second motor; the first gear transmission mechanism and the second gear transmission mechanism are respectively in transmission connection with the output ends of the first reduction gearbox of the first driving mechanism and the second reduction gearbox of the second driving mechanism, and the first gear transmission mechanism and the second gear transmission mechanism are coupled with each other to form a synchronous transmission; in this way, the compound multi-stage transmission mode through the reduction gearbox and the gear transmission mechanism generates sufficient torque for the folding mobile phone. While the dual motors are driving in parallel, the dual output shafts are coupled and transmitted through the gear set, so that the two sides are opened and closed synchronously, meeting the user experience of intelligence and a sense of technology; at the same time, by respectively connecting the first gear transmission mechanism and the second gear transmission mechanism with the first hinge mechanism, it is used to drive the first hinge mechanism to realize automatic synchronous folding or unfolding; when the screen is in the unfolded state, the deformation monitoring piece is used to monitor whether there is a crease in the folding area of the screen. If there is a crease in the folding area, the resistance value of the deformation monitoring piece will change. When the resistance value of the deformation monitoring piece is greater than the preset threshold resistance, the input voltage of the first motor and the second motor is set as a DC voltage, so that the first motor and the second motor generate heat to heat the folding area of the screen, causing a slight change in the molecular structure of the screen material at this place, thereby reducing or eliminating the trace of the crease and optimizing the user experience.

Description of the Drawings

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0037] Figure 1 It is a schematic structural diagram of the electric hinge device provided in the first embodiment of the present invention;

[0038] Figure 2 It is an exploded structural diagram of the electric hinge device provided in the first embodiment of the present invention;

[0039] Figure 3 is Figure 2 an exploded view of the first hinge mechanism of;

[0040] Figure 4 is Figure 1 a cross-sectional view taken along line A-A of;

[0041] Figure 5 is Figure 1 the sectional view taken along line B-B of

[0042] Figure 6 the structural schematic diagram of the first connecting member of the electric hinge device provided in the first embodiment of the present invention;

[0043] Figure 7 the structural schematic of the second connecting member of the electric hinge device provided in the first embodiment of the present invention;

[0044] Figure 8 the three-dimensional structural schematic diagram of the electronic device provided in the second embodiment of the present invention;

[0045] Figure 9 is Figure 8 the sectional view taken along line C-C of

[0046] Figure 10 the exploded view of the electronic device provided in the second embodiment of the present invention.

[0047] In the figure, 100 is the electric hinge device, 1 is the base, 2 is the first driving mechanism, 21 is the first motor, 22 is the first reduction gearbox, 3 is the second driving mechanism, 31 is the second motor, 32 is the second reduction gearbox, 4 is the first gear transmission mechanism, 41 is the first gear, 42 is the second gear, 43 is the third gear, 44 is the fourth gear, 45 is the first output shaft, 5 is the second gear transmission mechanism, 51 is the fifth gear, 52 is the sixth gear, 53 is the seventh gear, 54 is the eighth gear, 55 is the second output shaft, 6 is the first hinge mechanism, 61 is the first slider, 62 is the second slider, 63 is the first fixed block, 64 is the first swing arm, 65 is the second swing arm, 66 is the first connecting member, 661 is the first connecting body, 662 is the first T-shaped groove, 663 is the first arc-shaped groove, 67 is the second connecting member, 671 is the second connecting body, 672 is the second T-shaped groove, 673 is the second arc-shaped groove, 7 is the bracket, 8 is the fixing member, 81 is the arc-shaped surface, 9 is the fixing piece, 10 is the second hinge mechanism, 11 is the conductive member, 12 is the deformation monitoring piece;

[0048] 200 is the electronic device, 201 is the first body, 202 is the second body, 203 is the screen, 2031 is the folding area, 204 is the driving module, 205 is the power module, 206 is the first support plate, 207 is the second support plate, 2071 is the avoidance position, 208 is the third support plate, 209 is the control switch.

Detailed implementation manners

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Embodiment 1

[0051] See also Figures 1 - 7 As shown, an embodiment of the present invention provides an electric hinge device 100 for adjusting the automatic opening and closing of a screen 203, wherein the screen 203 includes a folding area 2031. The electric hinge device 100 includes a base 1, a first driving mechanism 2, a second driving mechanism 3, a first gear transmission mechanism 41, a second gear transmission mechanism 5, a first hinge mechanism 6, and a deformation monitoring sheet 12.

[0052] The base 1 is used to install the first driving mechanism 2 , the second driving mechanism 3 , the first gear transmission mechanism 41 , the second gear transmission mechanism 5 and the first hinge mechanism 6 .

[0053] The first driving mechanism 2 is used to drive the first gear transmission mechanism 41 to move and drive the first hinge mechanism 6 to fold. The first driving mechanism 2 includes a first motor 21 fixed to the base 1 and a first reduction box 22 fixed to the base 1 and transmission-connected to the first motor 21. The first electric drive drives the first reduction box 22 to decelerate, thereby achieving a higher transmission ratio output torque, and further providing sufficient opening and closing force for the first hinge mechanism 6.

[0054] The second driving mechanism 3 is used to drive the first gear transmission mechanism 41 to move and drive the first hinge mechanism 6 to fold. The first driving mechanism 2 and the second driving mechanism 3 are arranged side by side, and the second driving mechanism 3 includes a second motor 31 fixed to the base 1 and a second reduction box 32 fixed to the base 1 and transmission-connected to the second motor 31. The folding area 2031 is located on the side of the first motor 21 and the second motor 31 away from the base 1. The second electric drive drives the second reduction box 32 to decelerate, thereby achieving a larger transmission ratio output torque, and further providing sufficient opening and closing force for the first hinge mechanism 6.

[0055] In this embodiment, the first reduction gearbox 22 and the second reduction gearbox 32 are both three-stage planetary reduction gearboxes.

[0056] The first gear transmission mechanism 41 is in transmission connection with the output end of the first reduction gearbox 22 of the first driving mechanism 2, and the second gear transmission mechanism 5 is in transmission connection with the output end of the second reduction gearbox 32 of the second driving mechanism 3. The first gear transmission mechanism 41 and the second gear transmission mechanism 5 are coupled with each other to form a synchronous transmission.

[0057] The first hinge mechanism 6 is installed on the base 1. The first gear transmission mechanism 41 and the second gear transmission mechanism 5 are respectively in transmission connection with the first hinge mechanism 6, and are used to drive the first hinge mechanism 6 to achieve automatic synchronous folding or unfolding. A square wave drive is performed on the first motor 21 and the second motor 31 using a microcontroller. The first motor 21 and the second motor 31 rotate in opposite directions. The first gearbox 4 and the second gearbox 42 are respectively in transmission connection with the first gear transmission mechanism 41 and the second gear transmission mechanism 5 to increase the transmission ratio of the system to meet the torque requirements of the folding mobile phone, realizing synchronous electric opening and closing of the hinges on both sides, and being able to meet the user experience of intelligence and a sense of technology.

[0058] In this embodiment, the first hinge mechanism 6 includes: a first slider 61 and a second slider 62. The first slider 61 and the second slider 62 are arranged oppositely. One end of the first slider 61 close to the second slider 62 and one end of the second slider 62 close to the first slider 61 are respectively in transmission connection with the first gear transmission mechanism 41 and the second gear transmission mechanism 5. The first slider 61 is sleeved and fixed on the first output shaft 45, and the second slider 62 is sleeved and fixed on the second output shaft 55.

[0059] A first fixing block 63, the first fixing block 63 is fixed on the base 1 and is located on one side of the first slider 61 and the second slider 62 away from the first driving mechanism 2 and the second driving mechanism 3. The end of the first output shaft 45 forms a rotational connection with the first fixing block 63, and the end of the second output shaft 55 forms a rotational connection with the first fixing block 63.

[0060] A first swing arm 64 and a second swing arm 65, the first swing arm 64 and the second swing arm 65 are arranged side by side, and one ends of the first swing arm 64 and the second swing arm 65 close to each other respectively form rotational connections with the first fixing block 63.

[0061] A first connecting member 66 and a second connecting member 67, the first connecting member 66 and the second connecting member 67 are located on opposite sides of the first fixing block 63, one end of the first slider 61 away from the second slider 62 forms a sliding connection with the first connecting member 66, one end of the first swing arm 64 away from the first fixing block 63 forms a rotational connection with the first connecting member 66, one end of the second slider 62 away from the first slider 61 forms a sliding connection with the second connecting member 67, and one end of the second swing arm 65 away from the first fixing block 63 forms a rotational connection with the second connecting member 67.

[0062] Specifically, the first driving mechanism 2 and the second driving mechanism 3 respectively drive the first gear transmission mechanism 41 and the second gear transmission mechanism 5. The first gear transmission mechanism 41 and the second gear transmission mechanism 42 respectively drive the first slider 61 and the second slider 62 to flip. The first connecting member 66 is used to connect the first swing arm 64 and the first slider 61 respectively, and the second connecting member 67 is used to connect the second slider 62 and the second swing arm 65 respectively. Through the synchronous movement of the first driving mechanism 2 and the second driving mechanism 3, the flipping angles of the first slider 61 and the second slider 62 are the same. Thus, by the first slider 61 and the second slider 62 sliding on the first connecting member 66 and the second connecting member 67 respectively, the first swing arm 64 and the second swing arm 65 are driven to swing, achieving the effect of synchronous opening and closing. While the first driving mechanism 2 and the second driving mechanism 3 are driven in parallel, the dual output shafts are coupled and driven through a gear set, enabling synchronous opening and closing on both sides, meeting the user experience of intelligence and a sense of technology.

[0063] Meanwhile, the first driving mechanism 2, the second driving mechanism 3, the first gear transmission mechanism 41, the second gear transmission mechanism 5, and the first hinge mechanism 6 are all arranged on the base 1, enabling a relatively high reduction ratio for the compound reduction transmission system designed based on the driving mechanism within the narrow space of the base 1, ensuring the torque and electric driving force required for hinge opening and closing. The system has a high integration degree, occupies a small space, and has a wider range of applicable scenarios.

[0064] In this embodiment, the electric hinge device 100 further includes a second hinge mechanism 10 fixed to the base 1 and located at one end of the first driving mechanism 2 and the second driving mechanism 3 away from the first hinge mechanism 6. The second hinge mechanism 10 is arranged opposite to the first hinge mechanism 6; and the second hinge mechanism 10 has the same structure as the first hinge mechanism 6. By arranging the first hinge mechanism 6 and the second hinge mechanism 10 at opposite ends of the base 1 and having the same structure, the overall stability of the electric hinge device 100 is high.

[0065] The deformation monitoring sheet 12 is fixedly attached to one side of the folding area 2031 close to the first motor 21 and the second motor 31; when the screen 203 is in the unfolded state, the deformation monitoring sheet 12 is used to monitor whether there are creases in the folding area 2031 of the screen 203. If there are creases in the folding area 2031, the resistance value of the deformation monitoring sheet 12 will change. When the resistance value of the deformation monitoring sheet 12 is greater than the preset threshold resistance, the input voltage of the first motor 21 and the second motor 31 is controlled to be a DC voltage, so that the first motor 21 and the second motor 31 generate heat to heat the folding area 2031 of the screen 203. Optionally, the deformation monitoring sheet 12 can be a deformation monitoring sensor, etc., for monitoring the crease data of the folding area 2031 of the screen 203.

[0066] Among them, when the deformation monitoring sheet 12 detects deformation, DC drive is performed. At this time, the two motors are equivalent to two resistors, generating heat to heat and soften the screen 203 with creases where the motors are located, helping the stress release of the screen 203 and prompting the molecules in the screen 203 material to rearrange, reducing the obviousness of the creases. Specifically, when the mobile phone is in the flattened state, the screen 203 is also in the flattened state. The deformation of the screen 203 at the middle position of the folding screen is monitored by the deformation monitoring sheet 12. If there are creases, the resistance value of the deformation monitoring sheet 12 will change. When the resistance is greater than a certain threshold, the input voltage of the first motor 21 and the second motor 31 is controlled to be DC, so that the first motor 21 and the second motor 31 generate heat to heat the screen 203 in the bending area, causing a slight change in the molecular structure of the screen 203 material at that place, and prompting the molecules in the screen 203 material to rearrange, reducing the memory effect of the material, thereby reducing or eliminating the trace of the crease.

[0067] After the first motor 21 and the second motor 31 are heated, when the deformation monitoring sheet 12 detects that there are no creases in the folding area 2031 of the screen 203, it is fed back to the corresponding microcontroller through the deformation detection sheet, and the microcontroller controls the heating of the first motor 21 and the second motor 31 to stop.

[0068] In this embodiment, bilateral synchronous electric opening and closing are realized through the drive of the first motor 21 and the second motor 31, so that a composite reduction drive system based on a dual-motor design obtains a higher reduction ratio in a narrow space, ensuring the torque and electric drive force required for the hinge to open and close. The system has a high integration level, occupies a small space, and has a wider applicable scenario. Moreover, it can eliminate the creases generated on the screen 203 after long-term use of the folding screen mobile phone through the deformation monitoring sheet 12 and the self-heating of the motor, and has the advantages of simple installation, small space occupation, and suitability for long-term monitoring.

[0069] In this embodiment, the electric hinge device 100 further includes a bracket 7, which is fixed to the base 1, and the first reduction gearbox 22 and the second reduction gearbox 32 are respectively fixed to the bracket 7. By fixedly connecting the bracket 7 and the base 1, the first reduction gearbox 22 and the second reduction gearbox 32 are well fixed, and there will be no jitter when the first motor 21 and the second motor 31 drive the first reduction gearbox 22 and the second reduction gearbox 32 respectively, and the stability is good.

[0070] In this embodiment, the first gear transmission mechanism 41 includes a first gear 4, a second gear 42 meshing with the first gear 4, a third gear 43 coaxially driven by the second gear 42, a fourth gear 44 meshing with the third gear 43, and a first output shaft 45 fixed to an end of the fourth gear 44 away from the first motor 21. The first output shaft 45 is connected to the first hinge mechanism 6.

[0071] The second gear transmission mechanism 5 includes a fifth gear 51, a sixth gear 52 meshing with the fifth gear 51, a seventh gear 53 coaxially driven by the sixth gear 52, an eighth gear 54 meshing with the seventh gear 53, and a second output shaft 55 fixed to an end of the eighth gear 54 away from the first motor 21. The second output shaft 55 is connected to the first hinge mechanism 6; the second gear 42 is coupled to the sixth gear 52.

[0072] In this embodiment, the diameter of the first gear 4 is equal to the diameter of the third gear 43, and the diameter of the second gear 42 is equal to the diameter of the fourth gear 44; the diameter of the second gear 42 is greater than the diameter of the first gear 4.

[0073] The diameter of the first gear 4 is equal to the diameter of the fifth gear 51, the diameter of the second gear 42 is equal to the diameter of the sixth gear 52, the diameter of the third gear 43 is equal to the diameter of the seventh gear 53, and the diameter of the fourth gear 44 is equal to the diameter of the eighth gear 54.

[0074] Specifically, the first motor 21 drives the first reduction gearbox 22 to reduce speed. The output end of the first reduction gearbox 22 drives the first gear 4 to rotate. The first gear 4 drives the second gear 42 and the third gear 43 to rotate coaxially. The third gear 43 drives the fourth gear 44 to rotate, so that the first output shaft 45 drives the first slider 61 to slide on the first connecting member 66, drives the first connecting member 66 to swing and simultaneously drives the first swing arm 64 to swing. The second motor 31 drives the second reduction gearbox 32 to reduce speed. The output end of the second reduction gearbox 32 drives the fifth gear 51 to rotate. The fifth gear 51 drives the sixth gear 52 and the seventh gear 53 to rotate coaxially. The seventh gear 53 drives the eighth gear 54 to rotate, so that the second output shaft 55 drives the second slider 62 to slide on the second connecting member 67, drives the second connecting member 67 to swing and simultaneously drives the second swing arm 65 to swing. By coupling the second gear 42 with the sixth gear 52, parallel drive of the two motors is achieved. The two output shafts are coupled and driven through a gear set, so that the first swing arms 64 and the second swing arms 65 on both sides are synchronously opened and closed, ensuring a stable opening and closing process, consistency in the opening and closing speed and duration of the swing arms on both sides, and meeting the user experience of intelligence and a sense of technology.

[0075] In this embodiment, both the first gear 4 transmission assembly and the second gear 42 transmission assembly are two-stage parallel gear sets. By installing the corresponding above-mentioned components on the base 1, a high transmission ratio torque output structure of dual-motor drive with a three-stage planetary reducer and a two-stage parallel gear set in a narrow space can be achieved, providing sufficient opening and closing force for the hinge system.

[0076] In this embodiment, the electric hinge device 100 further includes a fixing plate 9. The fixing plate 9 is fixed to the base 1. The fixing plate 9 is respectively arranged between the first gear 4 and the third gear 43 and between the fifth gear 51 and the seventh gear 53. The first gear 4 to the eighth gear 54 are respectively rotatably connected to the fixing plate 9. The fixing plate 9 is used to support the first gear 4 to the eighth gear 54, so that during the driving process of the first gear 4 to the eighth gear 54, the opening and closing process has good stability and stable power transmission.

[0077] In this embodiment, the electric hinge device 100 further includes a fixing member 8. The fixing member 8 is provided with an arc surface 81. The fixing member 8 is fixed to the base 1. The fixing plate 9 is inserted and fixed to the fixing member 8. The first gear 41, the second gear 42, the fifth gear 51 and the sixth gear 52 are respectively rotatably arranged on the arc surface 81. By adopting a coupling drive design for the above-mentioned multiple gears, and relying on the fixing member 8 and the base 1 to fix and position the parallel gear set, the coupling of the two output gears ensures the consistency of the opening and closing speeds and durations of the swing arms on both sides, achieving the effect of synchronous opening and closing of the double swing arms and optimizing the user experience.

[0078] In this embodiment, the first connecting member 66 includes a first connecting body 661, a first T-shaped groove 662 and a first arc groove 663 formed by penetrating from the side of the first connecting body 661 close to the first fixing block 63 to the side far from the first fixing block 63; one end of the first slider 61 far from the second slider 62 is arranged in the first T-shaped groove 662 to form a sliding connection, and one end of the first swing arm 64 far from the second swing arm 65 is arranged in the first arc groove 663 to form a rotational connection. By the first slider 61 being driven by the first motor 21 to flip, driving the first connecting body 661 to flip and rise, the first swing arm 64 slides in the first arc groove 663, and at the same time, it also drives the first connecting body 661 to swing with the movement of the first slider 61, thereby driving the first swing arm 64 to swing and realizing the function of automatic folding or opening.

[0079] The second connecting member 67 includes a second connecting body 671, a second T-shaped groove 672 and a second arc groove 673 formed by penetrating from the side of the second connecting body 671 close to the first fixing block 63 to the side far from the first fixing block 63; one end of the second slider 62 far from the first slider 61 is arranged in the second T-shaped groove 672 to form a sliding connection, and one end of the second swing arm 65 far from the first swing arm 64 is arranged in the second arc groove 673 to form a rotational connection. By the second slider 62 being driven by the second motor 31 to flip, driving the second connecting body 671 to flip and rise, the second swing arm 65 slides in the second arc groove 673, and at the same time, it also drives the second connecting body 671 to swing with the movement of the second slider 62, thereby driving the second swing arm 65 to swing and realizing the function of automatic folding or opening.

[0080] In this embodiment, the electric hinge device 100 further includes a conductive member 11. The conductive member 11 is fixed to the base 1 and is located between the first driving mechanism 2 and the second driving mechanism 3. The conductive member 11 is electrically connected to the first driving mechanism 2, the second driving mechanism 3 and the deformation monitoring piece 12 respectively.

[0081] Embodiment 2

[0082] Please refer to Figures 1 - 10 As shown, an electronic device 200 provided by an embodiment of the present invention includes a first body 201, a second body 202, a control switch 209, a power module 205, a driving module 204, and the electric hinge device 100 as described above; the power module 205 is fixed in the first body 201 and / or the second body 202, and the power module 205 is respectively used to supply power to the driving module 204 and the deformation monitoring sheet 12; the screen 203 is simultaneously covered and fixed on the side of the first body 201, the electric hinge device 100 and the second body 202 away from the base 1; the control switch 209 controls the driving module 204 to work, the first body 201 and the second body 202 are respectively located on opposite sides of the base 1, and the first body 201 and the second body 202 are respectively fixed on opposite sides of the first hinge mechanism 6. Wherein, the first body 201 is fixed on the side of the first connecting member 66 away from the first slider 61, and the second body 202 is fixed on the side of the second connecting member 67 away from the second slider 62; the driving module 204 is respectively electrically connected to the first driving mechanism 2 and the second driving mechanism 3, and is used to respectively control the first driving mechanism 2 and the second driving mechanism 3 to work. Optionally, the power module 205 is a lithium battery, which can store electric energy and supply power to the driving module 204, the first motor 21, the second motor 31, etc.

[0083] Wherein, the first body 201 and the second body 202 are used to install the driving module 204, the power module 205, etc. The screen 203 is stacked on the upper surfaces of the first body 201 and the second body 202.

[0084] Specifically, the power module 205 supplies power to the driving module 204 and the deformation monitoring sheet 12 respectively, and is controlled by the driving module 204. As the output ends, the first motor 21 and the second end are respectively connected to the driving module 204 through the circuit of the conductive member 11, which can ensure that the folding type does not damage the circuit. The two motors, the first motor 21 and the second motor 31, output torque through a double reduction mechanism to drive the first swing arm 64 and the second swing arm 65 to perform opening and closing actions, and the first body 201 and the second body 202 are respectively driven by the first swing arm 64 and the second swing arm 65 to achieve folding. The user can control the driving module 204 according to the control switch 209 or remotely, so as to achieve automatic opening and closing.

[0085] Specifically, a square-wave voltage is output by the driving module 204 to control the rotation of the first motor 21 and the second motor 31. Primary deceleration is performed by the first reduction gearbox 22 and the second reduction gearbox 32. Secondary deceleration is achieved by the first gear transmission mechanism 41 and the second gear transmission mechanism 5. The first swing arm 64 and the second swing arm 65 are respectively driven by the first gear transmission mechanism 41 and the second gear transmission mechanism 5 to swing, so as to realize the automatic opening and closing of the first body 201 and the second body 202. The power supply module 205 powers the deformation monitoring sheet 12, and judges that the deformation monitoring sheet 12 monitors the deformation of the screen 203 through the change of resistance. When the resistance is greater than a certain threshold, a DC voltage input is controlled to make the motor heat up, so as to realize the function of repairing the crease of the folding screen.

[0086] In this embodiment, the electronic device 200 further includes a first support plate 206, a second support plate 207 and a third support plate 208 which are arranged side by side in sequence; the first support plate 206, the second support plate 207 and the third support plate 208 are installed on the first hinge mechanism 6. The first support plate 206, the second support plate 207 and the third support plate 208 are all located below the screen 203. The second support plate 207 is located below the folding area 2031. The first support plate 206 and the third support plate 208 are synchronously folded or unfolded along with the first hinge mechanism 6; the deformation monitoring sheet 12 is located between the folding area 2031 and the second support plate 207. The first support plate 206, the second support plate 207 and the third support plate 208 can also be FPC circuit boards, which are convenient for installation and conduction.

[0087] In this embodiment, a recessed avoidance position 2071 is formed on one side of the second support plate 207 close to the screen 203 and extends away from the screen 203. The deformation monitoring sheet 12 is located in the avoidance position 2071. This facilitates the installation and setting of the deformation monitoring sheet 12.

[0088] Compared with the related art, the electric hinge device of the present invention is characterized in that the first driving mechanism and the second driving mechanism are relatively installed on the base, the first driving mechanism includes a first motor fixed to the base and a first reduction box fixed to the base and transmission-connected to the first motor; the second driving mechanism and the first driving mechanism are arranged side by side, the second driving mechanism includes a second motor fixed to the base and a second reduction box fixed to the base and transmission-connected to the second motor; the first gear transmission mechanism and the second gear transmission mechanism are transmission-connected to the output end of the first reduction box of the first driving mechanism and the output end of the second reduction box of the second driving mechanism respectively, and the first gear transmission mechanism and the second gear transmission mechanism are coupled to each other to form a synchronous transmission; in this way, a multi-stage transmission method of a compound of the reduction box and the gear transmission mechanism generates sufficient torque for the folding mobile phone, and the dual motors are arranged in parallel. While driving, the dual output shafts are coupled and transmitted through a gear set, so that the two sides can be opened and closed synchronously, satisfying the user experience of intelligence and technology; at the same time, by respectively connecting the first gear transmission mechanism and the second gear transmission mechanism to the first hinge mechanism, it is used to drive the first hinge mechanism to realize automatic synchronous folding or unfolding; when the screen is in the unfolded state, the deformation monitoring piece is used to monitor whether there are creases in the folding area of ​​the screen. If there are creases in the folding area, the resistance value of the deformation monitoring piece will change. When the resistance value of the deformation monitoring piece is greater than the preset threshold resistance, the input voltage of the first motor and the second motor is controlled to be a DC voltage, so that the first motor and the second motor generate heat to heat the folding area of ​​the screen, causing a slight change in the molecular structure of the screen material there, thereby reducing or eliminating the traces of the creases and optimizing the user experience.

[0089] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. An electric hinge device for adjusting the automatic opening and closing of a screen, wherein the screen includes a folding area, characterized in that: It includes: Base; A first driving mechanism, the first driving mechanism comprising a first motor fixed to the base and a first reduction box fixed to the base and drivingly connected to the first motor; a second driving mechanism, the second driving mechanism and the first driving mechanism are arranged side by side, the second driving mechanism comprises a second motor fixed to the base and a second reduction box fixed to the base and drivingly connected to the second motor; the folding area is located on a side of the first motor and the second motor away from the base; a first gear transmission mechanism, the first gear transmission mechanism being transmission-connected to an output end of the first reduction box of the first driving mechanism; a second gear transmission mechanism, the second gear transmission mechanism being transmission-connected to an output end of the second reduction box of the second drive mechanism; the first gear transmission mechanism and the second gear transmission mechanism being coupled to each other to form a synchronous transmission; A first hinge mechanism, wherein the first hinge mechanism is mounted on the base, and the first gear transmission mechanism and the second gear transmission mechanism are respectively connected to the first hinge mechanism for driving the first hinge mechanism to realize synchronous folding or unfolding; and A deformation monitoring sheet, wherein the deformation monitoring sheet is adhered and fixed to one side of the folding area close to the first motor and the second motor; when the screen is in an unfolded state, the deformation monitoring sheet is used to monitor whether there is a crease in the folding area of ​​the screen. If there is a crease in the folding area, the resistance value of the deformation monitoring sheet will change. When the resistance value of the deformation monitoring sheet is greater than a preset threshold resistance, the input voltage of the first motor and the second motor is controlled to be a DC voltage, so that the first motor and the second motor generate heat to heat the folding area of ​​the screen.

2. The electric hinge device according to claim 1, characterized in that: The electric hinge device further comprises a bracket, wherein the bracket is fixed to the base, and the first reduction gearbox and the second reduction gearbox are respectively fixed to the bracket.

3. The electric hinge device according to claim 1, characterized in that: The first gear transmission mechanism includes a first gear, a second gear meshing with the first gear, a third gear coaxially driven with the second gear, a fourth gear meshing with the third gear, and a first output shaft fixed to an end of the fourth gear away from the first motor, and the first output shaft is connected to the first hinge mechanism; The second gear transmission mechanism includes a fifth gear, a sixth gear meshing with the fifth gear, a seventh gear coaxially transmitted with the sixth gear, an eighth gear meshing with the seventh gear, and a second output shaft fixed to an end of the eighth gear away from the first motor, the second output shaft is connected to the first hinge mechanism; the second gear is coupled to the sixth gear.

4. The electric hinge device according to claim 3, characterized in that: The diameter of the first gear is equal to the diameter of the third gear, the diameter of the second gear is equal to the diameter of the fourth gear; the diameter of the second gear is greater than the diameter of the first gear; The diameter of the first gear is equal to the diameter of the fifth gear, the diameter of the second gear is equal to the diameter of the sixth gear, the diameter of the third gear is equal to the diameter of the seventh gear, and the diameter of the fourth gear is equal to the diameter of the eighth gear.

5. The electric hinge device according to claim 4, characterized in that: The electric hinge device also includes a fixing plate, which is fixed to the base. The fixing plates are respectively arranged between the first gear and the third gear and between the fifth gear and the seventh gear. The first gear to the eighth gear are respectively rotatably connected with the fixing plates.

6. The electric hinge device according to claim 5, characterized in that: The electric hinge device also includes a fixing member, which is provided with an arc surface. The fixing member is fixed to the base, and the fixing plate is inserted and fixed to the fixing member. The first gear, the second gear, the fifth gear and the sixth gear are respectively rotatably arranged on the arc surface.

7. The electric hinge device according to claim 1, characterized in that: The first reduction gearbox and the second reduction gearbox are both three-stage planetary reduction gearboxes.

8. The electric hinge device according to claim 3, characterized in that: The first hinge mechanism comprises: A first slider and a second slider, wherein the first slider is arranged opposite to the second slider, and one end of the first slider close to the second slider and one end of the second slider close to the first slider are respectively connected to the first gear transmission mechanism and the second gear transmission mechanism; the first slider is sleeved and fixed to the first output shaft, and the second slider is sleeved and fixed to the second output shaft; a first fixed block, the first fixed block being fixed to the base and being located on a side of the first slider and the second slider away from the first driving mechanism and the second driving mechanism; an end of the first output shaft being rotatably connected to the first fixed block, and an end of the second output shaft being rotatably connected to the first fixed block; A first swing arm and a second swing arm, wherein the first swing arm and the second swing arm are arranged side by side, and ends of the first swing arm and the second swing arm close to each other are respectively rotatably connected to the first fixing block; and A first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are located on opposite sides of the first fixed block, an end of the first slider away from the second slider forms a sliding connection with the first connecting member, an end of the first swing arm away from the first fixed block forms a rotational connection with the first connecting member, an end of the second slider away from the first slider forms a sliding connection with the second connecting member, and an end of the second swing arm away from the first fixed block forms a rotational connection with the second connecting member.

9. The electric hinge device according to claim 8, characterized in that: The first connecting member includes a first connecting body, a first T-shaped groove and a first arc groove which are formed from a side of the first connecting body close to the first fixing block to a side away from the first fixing block; an end of the first sliding block away from the second sliding block is arranged in the first T-shaped groove to form a sliding connection, and an end of the first swing arm away from the second swing arm is arranged in the first arc groove to form a rotational connection; The second connecting member includes a second connecting body, a second T-shaped slot and a second arc-shaped slot formed by penetrating from a side of the second connecting body close to the first fixed block to a side away from the first fixed block; an end of the second sliding block away from the first sliding block is arranged in the second T-shaped slot to form a sliding connection, and an end of the second swing arm away from the first swing arm is arranged in the second arc-shaped slot to form a rotating connection.

10. The electric hinge device according to claim 1, characterized in that: The electric hinge device also includes a second hinge mechanism fixed to the base and located at one end of the first drive mechanism and the second drive mechanism away from the first hinge mechanism, the second hinge mechanism is arranged opposite to the first hinge mechanism; and the second hinge mechanism has the same structure as the first hinge mechanism.

11. The electric hinge device according to claim 1, characterized in that: The electric hinge device further includes a conductive member, which is fixed to the base and located between the first drive mechanism and the second drive mechanism, and the conductive member is electrically connected to the first drive mechanism, the second drive mechanism and the deformation monitoring sheet respectively.

12. An electronic device, characterized in that: It includes a first body, a second body, a control switch, a power module, a drive module and an electric hinge device as described in any one of claims 1 to 11; the power module is fixed in the first body and / or the second body, and the power module is used to supply power to the drive module and the deformation monitoring sheet respectively; the screen is simultaneously covered and fixed to the first body, the electric hinge device and a side of the second body away from the base; the control switch controls the operation of the drive module, the first body and the second body are respectively located on opposite sides of the base, and the first body and the second body are respectively fixed on opposite sides of the first hinge mechanism; the drive module is electrically connected to the first drive mechanism and the second drive mechanism respectively, and is used to control the operation of the first drive mechanism and the second drive mechanism respectively.

13. The electronic device according to claim 12, characterized in that: The electronic device also includes a first support plate, a second support plate and a third support plate arranged side by side in sequence; the first support plate, the second support plate and the third support plate are respectively installed on the first hinge mechanism, the first support plate, the second support plate and the third support plate are all located below the screen, and the second support plate is located below the folding area; the first support plate and the third support plate are synchronously folded or unfolded with the first hinge mechanism; the deformation monitoring plate is located between the folding area and the second support plate.

14. The electronic device according to claim 13, characterized in that: A side of the second support plate close to the screen is recessed toward a side away from the screen to form an avoidance position, and the deformation monitoring piece is located in the avoidance position.

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