Electric hinge

Abstract

The utility model discloses an electric hinge which comprises a first side assembly, a second side assembly, a rotating arm set and a telescopic driver. The rotating arm set comprises a first rotating arm and a second rotating arm, one end of the first rotating arm is hinged to the first side assembly, the other end of the first rotating arm is movably connected with the second side assembly, one end of the second rotating arm is hinged to the second side assembly, the other end of the second rotating arm is movably connected with the first side assembly, and the first rotating arm and the second rotating arm are hinged to each other. The other end of the first rotating arm and the other end of the second rotating arm change positions relative to the second side assembly and the first side assembly respectively. The telescopic driver comprises a driver body and a telescopic rod, the driver body is fixed to the first side assembly, the tail end of the telescopic rod is connected with the second rotating arm, and the telescopic rod can drive the other end of the second rotating arm to change the position relative to the first side assembly when stretching out and drawing back. The electric hinge with the structure is simple in structure and easy to produce and implement.

Description

Technical Field

[0001] This utility model relates to hinges, and more particularly to an electric hinge. Background Technology

[0002] In existing technologies, to achieve automatic door opening and closing, a drive mechanism is typically installed on the top or bottom of the door. This installation is somewhat restrictive, and the drive mechanism is difficult to conceal, affecting the door's aesthetic integrity. Other existing technologies utilize motors integrated into the hinges to drive their rotation and engagement, achieving automatic door opening and closing. These motorized hinges integrate the hinge and drive mechanism into a single component, facilitating installation and concealment. However, this hinge-driven opening and closing structure requires a motor to directly rotate the hinge. Due to the low torque, this places a high load on the motor, typically necessitating multi-stage reduction gears to increase torque, resulting in a large number of components and a complex structure. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an electric hinge with a simple structure.

[0004] An electric hinge according to an embodiment of the present invention includes: a first side assembly; a second side assembly; a rotating arm assembly for connecting the first side assembly and the second side assembly so that they can be unfolded and engaged, the rotating arm assembly including a first rotating arm and a second rotating arm, one end of the first rotating arm being hinged to the first side assembly and the other end being movably connected to the second side assembly, one end of the second rotating arm being hinged to the second side assembly and the other end being movably connected to the first side assembly, the first rotating arm and the second rotating arm being hinged to each other, and when the first side assembly and the second side assembly are unfolded and engaged, the other ends of the first rotating arm and the other ends of the second rotating arm respectively change position relative to the second side assembly and the first side assembly; a telescopic actuator including an actuator body and a telescopic rod, the actuator body being used to drive the telescopic rod to extend and retract, the actuator body being fixed to the first side assembly, the tail end of the telescopic rod being connected to the second rotating arm, and the telescopic rod being able to drive the other end of the second rotating arm to change position relative to the first side assembly when it extends and retracts, so as to link the first side assembly and the second side assembly to unfold and engage.

[0005] The electric hinge according to the embodiments of this utility model has at least the following beneficial effects: when the actuator body drives the telescopic rod to move, the telescopic rod can pull or push the other end of the second rotating arm to change position relative to the first side component. The movement of the second rotating arm is used to reversely link the opening and closing of the first and second side components, thereby realizing the automatic opening and closing function of the electric hinge. The above-mentioned electric hinge uses a telescopic actuator to push and pull the second rotating arm to achieve the electric opening and closing of the hinge. The structure is simpler and easier to manufacture. Furthermore, the driving method of pushing and pulling the rotating arm places a small load on the actuator and provides good operational stability.

[0006] According to some embodiments of the present invention, the other end of the first rotating arm is provided with a first rotating shaft, and the two ends of the first rotating shaft are respectively connected to a first sliding member. The first sliding member is slidably disposed on the second side assembly, and the other end of the first rotating arm is rotatably connected to the first sliding member through the first rotating shaft; the other end of the second rotating arm is provided with a second rotating shaft, and the two ends of the second rotating shaft are respectively connected to a second sliding member. The second sliding member is slidably disposed on the first side assembly, and the other end of the second rotating arm is rotatably connected to the second sliding member through the second rotating shaft; the tail end of the telescopic rod is hinged to the other end of the second rotating arm.

[0007] According to some embodiments of the present invention, the other end of the second rotating arm and the tail end of the telescopic rod are hinged together by the second rotating shaft.

[0008] According to some embodiments of the present invention, the other end of the second rotating arm is provided with a notch, the second rotating shaft passes through the two walls of the notch, and the tail end of the telescopic rod is inserted into the notch and connected to the second rotating shaft.

[0009] According to some embodiments of the present invention, the other end of the second rotating arm is slidably disposed on the first side assembly in a straight line direction, the tail end of the telescopic rod is hinged to the other end of the second rotating arm, and the sliding direction of the second rotating arm is the same as the extension and retraction direction of the telescopic rod.

[0010] According to some embodiments of the present invention, the two sides of the other end of the second rotating arm are respectively slidably disposed on the first side assembly, and the tail end of the telescopic rod is hinged to the other end of the second rotating arm at the middle position between its two sides.

[0011] According to some embodiments of the present invention, the first side component includes a first base and a left-right adjustment seat. The first base is used to install on a door or door frame, and the left-right direction is defined as the direction parallel to the door surface when the door is closed. The left-right adjustment seat is disposed on the first base and can adjust the left-right direction relative to the first base. The other end of the second rotating arm is slidably connected to the left-right adjustment seat and the sliding direction is the left-right direction. The driver body is fixed to the left-right adjustment seat.

[0012] According to some embodiments of the present invention, the first base is a shell structure and is provided with an installation cavity. The left and right adjustment seats are disposed in the installation cavity. The installation cavity is provided with an opening. One side of the left and right adjustment seats in the left and right direction is exposed relative to the first base through the opening. The driver body is connected to the left and right adjustment seats on the side of the opening.

[0013] According to some embodiments of this utility model, the left and right adjustment seat is provided with an installation end face, the driver body is attached to the installation end face, the installation end face and the driver body are respectively provided with positioning holes and positioning pins, the positioning pins and the positioning holes are inserted into each other, and the driver body and the installation end face are provided with mounting fasteners to fix the driver body to the installation end face.

[0014] According to some embodiments of the present invention, the second side component includes a second base, an up-down adjustment seat, and a front-back adjustment seat. The up-down adjustment seat is disposed on the second base and can be adjusted up-down relative to the second base. The front-back adjustment seat is disposed on the up-down adjustment seat and can be adjusted front-back relative to the up-down adjustment seat. One end of the second rotating arm is hinged to the front-back adjustment seat.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of an embodiment of the present invention;

[0019] Figure 3 This is a three-dimensional schematic diagram of the cut-off portion of the first base in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the connection between the telescopic driver and the second rotating arm in an embodiment of the present invention;

[0021] Figure 5 This is an exploded view of the first side component according to an embodiment of the present utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of the present invention after disassembling the telescopic driver and the left and right adjustment seat;

[0023] Figure 7 This is an exploded view of the second side component according to an embodiment of the present invention.

[0024] Figure label:

[0025] First side component 100, first base 110, left and right adjustment seat 120, left and right adjustment screw 130, mounting cavity 111, opening 1111, mounting end face 121, first linear slide groove 122;

[0026] Second side component 200, second base 210, upper and lower adjustment seat 220, front and rear adjustment seat 230, upper and lower strip hole 221, upper and lower adjustment screw 240, front and rear strip hole 231, front and rear adjustment screw 250, second linear slide groove 232.

[0027] The rotating arm assembly 300 includes a first rotating arm 310, a second rotating arm 320, a first rotating shaft 311, a first sliding member 312, a second rotating shaft 321, a second sliding member 322, and a notch / groove 323.

[0028] Telescopic actuator 400, actuator body 410, telescopic rod 420, bushing 421;

[0029] Positioning hole 510, positioning pin 520;

[0030] Install fastener 600. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 7 An electric hinge includes a first side assembly 100, a second side assembly 200, a swivel arm assembly 300, and a telescopic actuator 400. The swivel arm assembly 300 connects the first side assembly 100 and the second side assembly 200 to allow them to unfold and engage. The swivel arm assembly 300 includes a first swivel arm 310 and a second swivel arm 320. One end of the first swivel arm 310 is hinged to the first side assembly 100, and the other end is movably connected to the second side assembly 200. One end of the second swivel arm 320 is hinged to the second side assembly 200, and the other end is movably connected to the first side assembly 100. The first swivel arm 310 and the second swivel arm 320 are hinged to each other. When the first side assembly 100 and the second side assembly 200 unfold and engage, the other end of the first swivel arm 310 and the other end of the second swivel arm 320 change position relative to the second side assembly 200 and the first side assembly 100, respectively. The telescopic actuator 400 includes an actuator body 410 and a telescopic rod 420. The actuator body 410 is used to drive the telescopic rod 420 to extend and retract. The actuator body 410 is fixed to the first side assembly 100. The tail end of the telescopic rod 420 is connected to the second rotating arm 320. When the telescopic rod 420 extends and retracts, it can drive the other end of the second rotating arm 320 to change position relative to the first side assembly 100, so as to coordinate the opening and closing of the first side assembly 100 and the second side assembly 200.

[0036] When the actuator body 410 drives the telescopic rod 420 to move, the telescopic rod 420 can pull or push the other end of the second rotating arm 320 to change position relative to the first side component 100. The movement of the second rotating arm 320 is used to reversely link the opening and closing of the first side component 100 and the second side component 200, thereby realizing the automatic opening and closing function of the electric hinge. The above-mentioned electric hinge uses a structure where the telescopic actuator 400 pushes and pulls the second rotating arm 320 to achieve the electric opening and closing of the hinge. This structure is simpler and easier to manufacture. Furthermore, the telescopic push-pull rotating arm driving method places a small load on the actuator and provides good operational stability.

[0037] In this embodiment, the telescopic actuator 400 may be an electric push rod, a motor combined with a lead screw mechanism, or other actuators that can provide telescopic movement components, and the specific configuration can be made according to the actual situation.

[0038] In this embodiment, the other end of the first rotating arm 310 is provided with a first rotating shaft 311, and the two ends of the first rotating shaft 311 are respectively connected to a first sliding member 312. The first sliding member 312 is slidably disposed on the second side assembly 200, and the other end of the first rotating arm 310 is rotatably connected to the first sliding member 312 through the first rotating shaft 311. The other end of the second rotating arm 320 is provided with a second rotating shaft 321, and the two ends of the second rotating shaft 321 are respectively connected to a second sliding member 322. The second sliding member 322 is slidably disposed on the first side assembly 100, and the other end of the second rotating arm 320 is rotatably connected to the second sliding member 322 through the second rotating shaft 321. The tail end of the telescopic rod 420 is hinged to the other end of the second rotating arm 320. With the above structure, the hinge forms a two-arm structure, with fewer rotating arms and a simpler structure. The second rotating arm 320 and the telescopic rod 420 can form a linkage slider structure, making it easier for the telescopic driver 400 to drive the other end of the second rotating arm 320 to slide and move, resulting in a smaller load and better stability.

[0039] In this embodiment, the other end of the second rotating arm 320 and the tail end of the telescopic rod 420 are hinged together by a second rotating shaft 321. With this structure, the second rotating shaft 321 simultaneously serves to rotatably connect the second rotating arm 320 and to hinge the telescopic rod 420 to the second rotating arm 320, thereby simplifying the structure.

[0040] In this embodiment, the other end of the second rotating arm 320 is provided with a notch 323, and the second rotating shaft 321 passes through the two walls of the notch 323. The tail end of the telescopic rod 420 is inserted into the notch 323 and connected to the second rotating shaft 321. With the above structure, the structure is compact, and the connection of the telescopic rod 420 is stable. In this embodiment, the tail end of the telescopic rod 420 is provided with a bushing 421, which cooperates smoothly with the second rotating shaft 321.

[0041] In one embodiment, the other end of the second rotating arm 320 is slidably disposed on the first side assembly 100 along a straight line, and the sliding direction of the second rotating arm 320 is the same as the extension direction of the telescopic rod 420. By adopting the above structure, setting the other end of the second rotating arm 320 to slide in a straight line, and setting the extension direction of the telescopic rod 420 to be the same direction of extension and retraction, it is beneficial to have a compact mechanism, a simpler drive structure, and smoother operation. In another embodiment, the other end of the first rotating arm 310 is also slidably disposed on the second side assembly 200 along a straight line.

[0042] In this embodiment, the tail end of the telescopic rod 420 is hinged to the other end of the second rotating arm 320 at a midpoint between its two sides. This structure provides a balanced connection with good structural strength.

[0043] It is conceivable that in other embodiments, the hinge is not limited to the two-arm structure described above. For example, it could also be a four-arm hinge, where the hinge assembly 300 includes four arms, with the additional two arms being a first auxiliary arm and a second auxiliary arm. The other end of the first arm 310 is movably connected to the second side assembly 200 via the first auxiliary arm, and the other end of the second arm 320 is movably connected to the first side assembly 100 via the second auxiliary arm. Specifically, the other end of the first arm 310 is hinged to the first auxiliary arm, the first auxiliary arm is hinged to the second side assembly 200, the other end of the second arm 320 is hinged to the second auxiliary arm, and the second auxiliary arm is hinged to the first side assembly 100. With the above structure, the hinge assembly 300 forms a four-bar linkage. In this case, the telescopic rod 420 of the telescopic actuator 400 can push and pull the other end of the second arm 320, causing the second arm 320 to swing back and forth to open and close the hinge. It is understood that there are many other implementations of the specific structure of the swing arm assembly 300 in this field, and those skilled in the art can also reasonably configure its specific swing arm structure according to actual conditions.

[0044] In an embodiment, the first side component 100 includes a first base 110 and a left-right adjustment seat 120. The first base 110 is used to install on a door or door frame, and the left-right direction is defined as the direction parallel to the door surface when the door is closed. The left-right adjustment seat 120 is disposed on the first base 110 and can be adjusted in the left-right direction relative to the first base 110. The other end of the second rotating arm 320 is slidably connected to the left-right adjustment seat 120 and the sliding direction is the left-right direction. The driver body 410 is fixed to the left-right adjustment seat 120. With the above structure, firstly, the left and right adjustment seat 120 can be adjusted in the left and right direction, thereby realizing the left and right adjustment of the door, that is, the adjustment of the width of the door gap; secondly, the drive body 410 is connected to the left and right adjustment seat 120, and since the sliding direction of the second rotating arm 320 and the extension direction of the telescopic rod 420 are both in the left and right direction, even if the left and right adjustment seat 120 is adjusted, the drive body 410 will only adjust its position in the left and right direction of the door. When the drive body 410 is set in the hole inside the door, there is no need to leave installation space and adjustment space in the direction perpendicular to the door, making it easier to realize the structure of the drive body 410 installed inside the door, which is also applicable to thin doors.

[0045] In this embodiment, the left and right adjustment seat 120 is provided with a first linear slide groove 122 extending in the left and right direction. There are two first linear slide grooves 122, which correspond one-to-one with the two first sliding members 312 respectively. The first linear slide grooves 122 can slide and cooperate with the first sliding members 312.

[0046] In this embodiment, a first base 110 is pivotally connected to a left-right adjusting screw 130. A left-right adjusting seat 120 is provided with a screw hole and threadedly connected to the left-right adjusting screw 130. Two left-right adjusting screws 130 are provided, corresponding to the upper and lower ends of the left-right adjusting seat 120 respectively. When the left-right adjusting screw 130 is rotated, the left-right adjusting seat 120 can be adjusted left-right through the threaded connection structure. It is conceivable that the left-right position adjustment of the left-right adjusting seat 120 is not limited to the above-described structure. For example, a left-right extending slot is provided in the first base 110, and a screw for locking the first base 110 and the left-right adjusting seat 120 passes through the slot, thereby achieving left-right position adjustment through the slot structure. It is understood that there are many other embodiments in the art for achieving position adjustment of the component along a predetermined direction, and those skilled in the art can configure them according to actual conditions.

[0047] In this embodiment, the first base 110 is a shell structure and has a mounting cavity 111. The left and right adjustment seat 120 is disposed in the mounting cavity 111, which has an opening 1111. One side of the left and right adjustment seat 120 is exposed relative to the first base 110 through the opening 1111 in the left-right direction. The driver body 410 is connected to the left and right adjustment seat 120 on the side of the opening 1111. With the above structure, the driver body 410 and the left and right adjustment seat 120 can be connected in a compact manner.

[0048] In this embodiment, the left and right adjustment seat 120 is provided with a mounting end face 121. The driver body 410 fits against the mounting end face 121. Positioning holes 510 and positioning pins 520 are correspondingly provided on the mounting end face 121 and the driver body 410. The positioning pins 520 and positioning holes 510 are interlocked. Mounting fasteners 600, which fix the driver body 410 to the mounting end face 121, are inserted through the driver body 410 and the mounting end face 121. Using the above structure, the driver body 410 can be easily positioned and installed, with accurate and stable installation, and convenient installation. In this embodiment, the mounting fasteners 600 can be screws, a combination of screws and nuts, or rivets.

[0049] In an embodiment, the second side component 200 includes a second base 210, an up-down adjustment seat 220, and a front-back adjustment seat 230. The up-down adjustment seat 220 is disposed on the second base 210 and can be adjusted up-down relative to the second base 210. The front-back adjustment seat 230 is disposed on the up-down adjustment seat 220 and can be adjusted front-back relative to the up-down adjustment seat 220. One end of the second rotating arm 320 is hinged to the front-back adjustment seat 230.

[0050] In this embodiment, the upper and lower adjusting seat 220 has upper and lower slots 221 through which upper and lower adjusting screws 240 pass. The upper and lower adjusting screws 240 are threaded to the second base 210 and are used to lock the upper and lower adjusting seat 220 and the second base 210 together. Two sets of upper and lower slots 221 and upper and lower adjusting screws 240 are provided, corresponding to the upper and lower ends of the upper and lower adjusting seat 220 respectively. When the upper and lower adjusting screws 240 are loosened, the upper and lower positions of the upper and lower adjusting seat 220 can be adjusted through the structure of the upper and lower slots 221. After the required adjustment is completed, the upper and lower adjusting screws 240 are tightened again.

[0051] In this embodiment, the front and rear adjusting seat 230 has front and rear slots 231, through which front and rear adjusting screws 250 pass. The front and rear adjusting screws 250 are threaded to the upper and lower adjusting seats 220 and are used to lock the front and rear adjusting seats 230 and the upper and lower adjusting seats 220 together. Two sets of front and rear slots 231 and front and rear adjusting screws 250 are respectively provided and are respectively positioned at the upper and lower ends of the front and rear adjusting seat 230. When the front and rear adjusting screws 250 are loosened, the front and rear position of the front and rear adjusting seat 230 can be adjusted through the structure of the front and rear slots 231. After the required adjustment is completed, the front and rear adjusting screws 250 are tightened again.

[0052] In this embodiment, the front and rear adjustment seat 230 is provided with a second linear slide groove 232 extending to the left and right. Two second linear slide grooves 232 are provided and correspond one-to-one with two second sliding members 322 respectively. The second linear slide grooves 232 can slide and cooperate with the second sliding members 322.

[0053] It is conceivable that the adjustment of the position of the upper and lower adjustment seat 220 and the front and rear adjustment seat 230 can be achieved by adopting the above-described structure. In the art, there are many implementation methods to achieve the adjustment of the position of the component along a predetermined direction, and those skilled in the art can configure them according to the actual situation.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An electric hinge, characterized in that, include: First side component (100); Second side component (200); A rotating arm assembly (300) is used to connect the first side assembly (100) and the second side assembly (200) so that they can be unfolded and engaged. The rotating arm assembly (300) includes a first rotating arm (310) and a second rotating arm (320). One end of the first rotating arm (310) is hinged to the first side assembly (100) and the other end is movably connected to the second side assembly (200). One end of the second rotating arm (320) is hinged to the second side assembly (200) and the other end is movably connected to the first side assembly (100). The first rotating arm (310) and the second rotating arm (320) are hinged to each other. When the first side assembly (100) and the second side assembly (200) are unfolded and engaged, the other end of the first rotating arm (310) and the other end of the second rotating arm (320) change position relative to the second side assembly (200) and the first side assembly (100), respectively. The telescopic actuator (400) includes an actuator body (410) and a telescopic rod (420). The actuator body (410) is used to drive the telescopic rod (420) to extend and retract. The actuator body (410) is fixed to the first side assembly (100). The tail end of the telescopic rod (420) is connected to the second rotating arm (320). When the telescopic rod (420) extends and retracts, it can drive the other end of the second rotating arm (320) to change position relative to the first side assembly (100) so as to link the first side assembly (100) and the second side assembly (200) to unfold and engage.

2. The electric hinge according to claim 1, characterized in that: The other end of the first rotating arm (310) is provided with a first rotating shaft (311), and the two ends of the first rotating shaft (311) are respectively connected to a first sliding member (312). The first sliding member (312) is slidably disposed on the second side assembly (200). The other end of the first rotating arm (310) is rotatably connected to the first sliding member (312) through the first rotating shaft (311). The other end of the second rotating arm (320) is provided with a second rotating shaft (321), and the two ends of the second rotating shaft (321) are respectively connected to a second sliding member (322). The second sliding member (322) is slidably disposed on the first side assembly (100). The other end of the second rotating arm (320) is rotatably connected to the second sliding member (322) through the second rotating shaft (321). The tail end of the telescopic rod (420) is hinged to the other end of the second rotating arm (320).

3. The electric hinge according to claim 2, characterized in that: The other end of the second rotating arm (320) and the tail end of the telescopic rod (420) are hinged together by the second rotating shaft (321).

4. The electric hinge according to claim 3, characterized in that: The other end of the second rotating arm (320) is provided with a notch (323), the second rotating shaft (321) passes through the two groove walls of the notch (323), and the tail end of the telescopic rod (420) is inserted into the notch (323) and connected to the second rotating shaft (321).

5. The electric hinge according to claim 1, characterized in that: The other end of the second rotating arm (320) is slidably disposed on the first side assembly (100) in a straight line direction. The tail end of the telescopic rod (420) is hinged to the other end of the second rotating arm (320). The sliding direction of the second rotating arm (320) is the same as the extension direction of the telescopic rod (420).

6. The electric hinge according to claim 1 or 5, characterized in that: The other two sides of the second rotating arm (320) are slidably disposed on the first side assembly (100), and the tail end of the telescopic rod (420) is hinged to the other end of the second rotating arm (320) at the middle position between its two sides.

7. The electric hinge according to claim 5, characterized in that: The first side assembly (100) includes a first base (110) and a left-right adjustment seat (120). The first base (110) is used to install on a door or door frame, and the left-right direction is defined as the direction parallel to the door surface when the door is closed. The left-right adjustment seat (120) is disposed on the first base (110) and can be adjusted in the left-right direction relative to the first base (110). The other end of the second rotating arm (320) is slidably connected to the left-right adjustment seat (120) and the sliding direction is the left-right direction. The driver body (410) is fixed to the left-right adjustment seat (120).

8. The electric hinge according to claim 7, characterized in that: The first base (110) is a shell structure and is provided with a mounting cavity (111). The left and right adjustment seat (120) is disposed in the mounting cavity (111). The mounting cavity (111) is provided with an opening (1111). One side of the left and right adjustment seat (120) is exposed relative to the first base (110) through the opening (1111) in the left and right direction. The driver body (410) is connected to the left and right adjustment seat (120) on the side of the opening (1111).

9. The electric hinge according to claim 7, characterized in that: The left and right adjustment seat (120) is provided with a mounting end face (121). The driver body (410) fits against the mounting end face (121). The mounting end face (121) and the driver body (410) are respectively provided with positioning holes (510) and positioning pins (520). The positioning pins (520) and the positioning holes (510) are inserted into each other. The driver body (410) and the mounting end face (121) are provided with mounting fasteners (600) that fix the driver body (410) to the mounting end face (121).

10. The electric hinge according to claim 1, characterized in that: The second side assembly (200) includes a second base (210), an up-down adjustment seat (220), and a front-back adjustment seat (230). The up-down adjustment seat (220) is disposed on the second base (210) and can be adjusted up and down relative to the second base (210). The front-back adjustment seat (230) is disposed on the up-down adjustment seat (220) and can be adjusted front and back relative to the up-down adjustment seat (220). One end of the second rotating arm (320) is hinged to the front-back adjustment seat (230).

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