Electric hinge and steaming oven comprising same

Abstract

The utility model provides an electric hinge and a steaming oven comprising the same, the electric hinge comprises a transmission assembly, the electric hinge further comprises a cycloid gear motor, an output shaft of the cycloid gear motor is connected with the transmission assembly, and when the electric hinge is powered off, the reverse driving efficiency of the cycloid gear motor is not lower than 81%. The transmission assembly is driven by the cycloid gear motor to drive the electric hinge, so that resistance generated when a user manually pushes and pulls a door body connected with the electric hinge is reduced under the condition of power failure by utilizing the characteristic that the cycloid gear motor can reversely drive, and then the door body can be manually opened and closed under the power failure state; and compared with the condition that a gear motor with a worm gear and a worm is low in reverse driving efficiency and easy to self-lock during power failure, the use convenience of a user is improved.

Description

Technical Field

[0001] This utility model specifically relates to an electric hinge and a steam oven containing the same. Background Technology

[0002] Currently, most hinges used in steam ovens are mechanical and manual, meaning the door has a handle that the user needs to hold and manually pull or push the door open. In the context of whole-house customization, steam ovens with electrically operated doors have also emerged.

[0003] However, electric door steam ovens are difficult to open and close manually when the power is off. This is because the drive component in the electric hinge is a geared motor with a worm gear, and the reduction ratio of this motor is approximately 4 rpm (motor speed around 3000 rpm, output speed around 4 rpm). When the appliance with this electric hinge loses power and the user needs to manually open or close the door, the door, along with the latch and a series of subsequent structures, ultimately needs to drive the motor to rotate for the door to move. This requires manually reversing the motor's rotation. However, this geared motor is inefficient in reversing the worm gear, and the worm gear may even self-lock. Furthermore, the large reduction ratio and multiple reduction stages also result in very low reversing efficiency. Therefore, once the power is off, it is difficult or even impossible for the user to manually open or close the door of an electric door steam oven, causing inconvenience. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect in the prior art that the door of the electric switch cannot be opened or closed after the power is cut off, and to provide an electric hinge and a steam oven containing the same.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] An electric hinge, the electric hinge including a transmission assembly, the electric hinge further including:

[0007] A cycloidal geared motor, wherein the output shaft of the cycloidal geared motor is connected to the transmission assembly, and the reverse drive efficiency of the cycloidal geared motor is not less than 81% when the electric hinge is de-energized.

[0008] In this solution, a cycloidal geared motor drives the transmission assembly to drive the electric hinge. In the event of a power outage, the cycloidal geared motor's ability to reverse drive reduces the resistance when the user manually pushes or pulls the door connected to the electric hinge. This allows the door to be opened and closed manually even when the power is off. Compared to geared motors with worm gears, which have low reverse drive efficiency and are prone to self-locking when the power is off, this solution improves the user's convenience.

[0009] Preferably, the cycloidal geared motor includes a motor, a first-stage cycloidal reduction assembly, and a second-stage cycloidal reduction assembly. The output end of the motor is connected to the first-stage cycloidal reduction assembly, the output end of the first-stage cycloidal reduction assembly is connected to the second-stage cycloidal reduction assembly, the output end of the second-stage cycloidal reduction assembly is connected to an output shaft, and the output shaft is connected to the transmission assembly.

[0010] In this solution, the above settings are used to effectively reduce the speed of the input transmission component.

[0011] Preferably, the primary cycloidal reduction assembly includes a primary input shaft and a primary cycloidal disk. The outer edge of the primary cycloidal disk is provided with primary cycloidal teeth. The cycloidal reduction motor also includes a housing for accommodating the primary cycloidal disk. The housing is provided with primary cycloidal tooth grooves corresponding to the primary cycloidal teeth. The primary input shaft includes an eccentric section that extends into the primary input hole of the primary cycloidal disk. The eccentric section abuts against the hole wall of the primary input hole, and the primary cycloidal teeth and the primary cycloidal tooth grooves mesh at the abutment points of the eccentric section and the primary input hole.

[0012] In this solution, the above settings are used to achieve a first-stage reduction in the power input from the self-motor.

[0013] Preferably, the primary input shaft further includes a first segment and a third segment, the eccentric segment is located between the first segment and the third segment, the first segment and the third segment are coaxially arranged, the axis of the eccentric segment is offset from the axes of the first segment and the third segment, and the third segment is coaxially connected to the output end of the motor.

[0014] In this scheme, the above settings are used to achieve the eccentric rotation of the first-stage cycloidal disc.

[0015] Preferably, the secondary cycloidal deceleration assembly includes a secondary input shaft and a secondary cycloidal disk. The outer edge of the secondary cycloidal disk is provided with secondary cycloidal teeth, and the housing is provided with secondary cycloidal tooth grooves corresponding to the secondary cycloidal teeth. A secondary input hole is opened at the axis of the secondary cycloidal disk. One end of the secondary input shaft extends into the secondary input hole, and the other end of the secondary input shaft is coaxially connected to the first segment. The secondary cycloidal teeth and the secondary cycloidal tooth grooves mesh at the contact points between the secondary input shaft and the secondary input hole.

[0016] In this scheme, the above settings are used to achieve the eccentric rotation of the secondary cycloidal disc.

[0017] Preferably, the primary cycloidal disk further includes a needle roller, which is disposed on the outer periphery of the primary input hole along the circumferential direction and extends toward the axial direction of the primary cycloidal disk. The secondary input shaft includes a secondary flange, on which a secondary connecting hole is formed along the circumferential direction, and the needle roller extends into the secondary connecting hole.

[0018] In this scheme, the above settings are used to connect the first-stage cycloidal disk to the second-stage input shaft.

[0019] Preferably, the secondary cycloidal disk further includes needle rollers, which are arranged circumferentially on the outer periphery of the secondary input hole and extend axially toward the secondary cycloidal disk. The output shaft includes an output flange with an output connection hole circumferentially formed on the output flange. One end of the output shaft is connected to the secondary cycloidal disk through the needle rollers and the output flange, and the other end of the output shaft is connected to the transmission assembly.

[0020] In this solution, the above settings are used to connect the secondary cycloidal disk to the output shaft.

[0021] Preferably, the number of the primary cycloidal teeth or the secondary cycloidal teeth is 27.

[0022] In this scheme, the above settings enable a single-stage reduction ratio of 27 and a two-stage reduction ratio of 729, thereby achieving a single-stage reverse drive efficiency of 90%.

[0023] Preferably, the transmission assembly includes a first connecting rod, a second connecting rod, and a third connecting rod. The transmission assembly includes a housing with a sliding groove. The first connecting rod, the second connecting rod, and the third connecting rod are connected in sequence by a pin. The pin extends into the sliding groove, and both ends of the pin extend out of the sliding groove, with the size of the end of the pin extending out of the sliding groove being larger than the size of the sliding groove.

[0024] In this solution, the above settings are used to improve the stability and reliability of the transmission.

[0025] A steam oven, the steam oven including the electric hinge as described above.

[0026] In this solution, the steam oven includes the aforementioned electric hinge, allowing the electric door to be manually opened and closed for food handling in the event of a power outage, thus improving ease of use.

[0027] The positive and progressive effects of this utility model are as follows: This utility model uses a cycloidal geared motor to drive the transmission component to realize the driving of the electric hinge. In the event of a power failure, the cycloidal geared motor itself can reverse drive, reducing the resistance when the user manually pushes and pulls the door connected to the electric hinge. Thus, the door can be manually opened and closed in the event of a power failure. Compared with the geared motor with worm gear, which has low reverse drive efficiency and is prone to self-locking in the event of a power failure, this utility model improves the user's convenience. Attached Figure Description

[0028] Figure 1 This is a perspective view of an electric hinge according to a preferred embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of a cycloidal geared motor and transmission assembly according to a preferred embodiment of the present invention.

[0030] Figure 3 This diagram shows the positional relationship between the first-stage cycloidal tooth groove and the first-stage cycloidal disk in a preferred embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the structure of the first-stage cycloidal deceleration assembly and the second-stage cycloidal deceleration assembly according to a preferred embodiment of the present invention.

[0032] Figure 5 for Figure 4 Sectional view of AA.

[0033] Explanation of reference numerals in the attached figures:

[0034] Box 1

[0035] Locking tongue 2

[0036] Needle roller 3

[0037] Transmission assembly 10

[0038] First link 11

[0039] Second link 12

[0040] Casing 13

[0041] Slide 131

[0042] Pin 14

[0043] 15 cycloidal geared motor

[0044] Output shaft 151

[0045] Motor 152

[0046] First-stage cycloidal deceleration assembly 153

[0047] Primary input axis 1531

[0048] Eccentric segment 15311

[0049] First paragraph 15312

[0050] Third paragraph 15313

[0051] First-stage cycloidal plate 1532

[0052] First-stage cycloidal tooth 1533

[0053] First-stage cycloidal tooth groove 1534

[0054] Level 1 input port 1535

[0055] Two-stage cycloidal deceleration assembly 154

[0056] Secondary input shaft 1541

[0057] Secondary cycloidal plate 1542

[0058] Secondary cycloidal tooth 1543

[0059] Level 2 input port 1545

[0060] Secondary flange 1546

[0061] Secondary connection hole 1547

[0062] Crank 16

[0063] Third link 17 Detailed Implementation

[0064] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0065] This embodiment provides an electric hinge, the specific structure of which is as follows: Figure 1 and Figure 2 As shown, the electric hinge includes a transmission assembly 10, and the electric hinge also includes:

[0066] Cycloidal reducer motor 15, the output shaft 151 of cycloidal reducer motor 15 is connected to transmission assembly 10, and when the electric hinge is de-energized, the reverse drive efficiency of cycloidal reducer motor 15 is not less than 81%.

[0067] Specifically, the cycloidal geared motor 15 is located on the side of the transmission assembly 10, and the output shaft 151 of the cycloidal geared motor 15 is connected to the input end of the transmission assembly 10. Compared with the geared motor with worm gear, which has low reverse drive efficiency and is prone to self-locking when power is off, the cycloidal geared motor 15 drives the transmission assembly 10 to drive the electric hinge. In the event of power failure, the cycloidal geared motor 15 can reverse drive itself, reducing the resistance when the user manually pushes and pulls the door connected to the electric hinge. Thus, the door can be manually opened and closed in the power failure state, improving the user's convenience.

[0068] Understandably, the original worm gear (20% reverse drive efficiency) plus four-stage parallel gears (90% single-stage reverse drive efficiency) transmission achieves speed reduction, with a total reverse drive efficiency of approximately 0.2 x 0.9 x 0.9 x 0.9 x 0.9 = 0.13, or 13%. This is significantly different from the cycloidal geared motor 15, which has a reverse drive efficiency of no less than 81%. When the reverse drive efficiency of the cycloidal geared motor 15 is no less than 81%, the resistance when the user manually pushes and pulls the door connected to the electric hinge is negligible. Therefore, this improves the user's manual pushing and pulling feel and avoids jamming during manual pushing and pulling.

[0069] In this embodiment, the cycloidal reducer motor 15 includes a motor 152, a first-stage cycloidal reducer assembly 153, and a second-stage cycloidal reducer assembly 154. The output end of the motor 152 is connected to the first-stage cycloidal reducer assembly 153, the output end of the first-stage cycloidal reducer assembly 153 is connected to the second-stage cycloidal reducer assembly 154, the output end of the second-stage cycloidal reducer assembly 154 is connected to the output shaft 151, and the output shaft 151 is connected to the transmission assembly 10.

[0070] Specifically, motor 152 is a drive structure found in the prior art, and will not be described in detail here. Motor 152 is located on one side of cycloidal reducer motor 15. First-stage cycloidal reducer assembly 153 is connected to motor 152 along the axial direction of its output end. First-stage cycloidal reducer assembly 153 is located between motor 152 and second-stage cycloidal reducer assembly 154. Second-stage cycloidal reducer assembly 154 is connected to first-stage cycloidal reducer assembly 153 along the axial direction of its output end. Output shaft 151 is connected to second-stage cycloidal reducer assembly 154 along the axial direction of its output end. The first-stage and second-stage cycloidal reducer assemblies 153 and 154 effectively reduce the speed output of motor 152, thereby reducing the speed of input transmission assembly 10, which in turn drives transmission assembly 10 to move, and drives the door body connected to the electric hinge, thus realizing electric opening and closing of the door.

[0071] Furthermore, such as Figure 3 , Figure 4 and Figure 5As shown, the first-stage cycloidal reduction assembly 153 includes a first-stage input shaft 1531 and a first-stage cycloidal disk 1532. The outer edge of the first-stage cycloidal disk 1532 is provided with first-stage cycloidal teeth 1533. The cycloidal reduction motor 15 also includes a housing 1, which is used to accommodate the first-stage cycloidal disk 1532. The housing 1 is provided with a first-stage cycloidal tooth groove 1534 corresponding to the first-stage cycloidal teeth 1533. The first-stage input shaft 1531 includes an eccentric section 15311, which extends into the first-stage input hole 1535 of the first-stage cycloidal disk 1532. The eccentric section 15311 abuts against the hole wall of the first-stage input hole 1535, and the first-stage cycloidal teeth 1533 and the first-stage cycloidal tooth groove 1534 mesh with each other at the abutment points of the eccentric section 15311 and the first-stage input hole 1535.

[0072] Specifically, the primary input shaft 1531 is a rod with one end coaxially connected to the output end of the motor 152. The primary cycloidal disk 1532 is a disc with its outer edge configured as primary cycloidal teeth 1533. The inner wall of the housing 1 is provided with primary cycloidal tooth grooves 1534 corresponding to the primary cycloidal teeth 1533. The eccentric section 15311 of the primary input shaft 1531 extends into the primary input hole 1535 at the axis of the primary cycloidal disk 1532. When the primary input shaft 1531 rotates, the eccentric section 15311 abuts against the hole wall in sequence along the circumferential direction of the primary input hole 1535, causing the primary cycloidal disk 1532 to rotate eccentrically. The primary cycloidal teeth 1533 and the primary cycloidal tooth grooves 1534 mesh with the abutment points of the eccentric section 15311 and the primary input hole 1535. It is understandable that when the eccentric section 15311 rotates one revolution, the first-stage cycloidal disk 1532 rotates one tooth, so as to achieve a first-stage reduction in the power input from the self-motor 152.

[0073] In this embodiment, the primary input shaft 1531 further includes a first segment 15312 and a third segment 15313. An eccentric segment 15311 is located between the first segment 15312 and the third segment 15313. The first segment 15312 and the third segment 15313 are coaxially arranged. The axis of the eccentric segment 15311 is offset from the axes of the first segment 15312 and the third segment 15313. The third segment 15313 is coaxially connected to the output end of the motor 152.

[0074] Specifically, the eccentric segment 15311, the first segment 15312, and the third segment 15313 are integrally formed, and all three are cylindrical structures. The eccentric segment 15311 is located inside the primary input hole 1535, while the first and third segments 15312 are located outside the primary input hole 1535. It can be understood that the diameter of the primary input hole 1535 is larger than the diameter of the eccentric segment 15311 to achieve the eccentric rotation of the primary cycloidal disk 1532.

[0075] In this embodiment, the secondary cycloidal deceleration assembly 154 includes a secondary input shaft 1541 and a secondary cycloidal disk 1542. The outer edge of the secondary cycloidal disk 1542 is provided with secondary cycloidal teeth 1543. The housing 1 is provided with secondary cycloidal tooth grooves (not shown in the figure) corresponding to the secondary cycloidal teeth 1543. A secondary input hole 1545 is opened at the axis of the secondary cycloidal disk 1542. One end of the secondary input shaft 1541 extends into the secondary input hole 1545, and the other end of the secondary input shaft 1541 is coaxially connected to the first segment 15312. The secondary cycloidal teeth 1543 and the secondary cycloidal tooth grooves mesh with the contact points between the secondary input shaft 1541 and the secondary input hole 1545.

[0076] Specifically, one end of the secondary input shaft 1541 is a rod that extends into the secondary input hole 1545, and the other end of the secondary input shaft 1541 is coaxially connected to the first segment 15312. The secondary cycloidal disk 1542 is a disc with secondary cycloidal teeth 1543 on its outer edge, and secondary cycloidal tooth grooves are provided on the inner wall of the housing 1 corresponding to the secondary cycloidal teeth 1543. When the secondary input shaft 1541 rotates, it abuts against the hole wall along the circumferential direction of the secondary input hole 1545, causing the secondary cycloidal disk 1542 to rotate eccentrically, and the secondary cycloidal teeth 1543 and the secondary cycloidal tooth grooves mesh at the abutment points of the secondary input shaft 1541 and the secondary input hole 1545. It can be understood that for every one rotation of the secondary input shaft 1541, the secondary cycloidal disk 1542 rotates one tooth, thereby achieving secondary reduction of the power input from the primary cycloidal reduction assembly 153.

[0077] Furthermore, in this embodiment, the primary cycloidal disk 1532 also includes a needle roller 3, which is disposed on the outer periphery of the primary input hole 1535 along the circumferential direction and extends toward the axial direction of the primary cycloidal disk 1532. The secondary input shaft 1541 includes a secondary flange 1546, on which a secondary connecting hole 1547 is provided along the circumferential direction, and the needle roller 3 extends into the secondary connecting hole 1547.

[0078] Specifically, the secondary flange 1546 is integrally formed with the secondary input shaft 1541 and is located at the end of the secondary input shaft 1541 facing the primary cycloidal deceleration assembly 153. The secondary flange 1546 is provided with several secondary connection holes 1547 corresponding to the needle rollers 3. The needle rollers 3 are cylindrical structures and the secondary connection holes 1547 are round holes. The needle rollers 3 extend into the secondary connection holes 1547 so that when the primary cycloidal disk 1532 rotates, it drives the secondary flange 1546 to rotate, thereby driving the secondary input shaft 1541 to rotate.

[0079] In this embodiment, the secondary cycloidal disk 1542 further includes a needle roller 3, which is disposed on the outer periphery of the secondary input hole 1545 along the circumferential direction. The needle roller 3 extends toward the axial direction of the secondary cycloidal disk 1542. The output shaft 151 includes an output flange (not shown in the figure), and an output connection hole (not shown in the figure) is provided on the output flange along the circumferential direction. One end of the output shaft 151 is connected to the secondary cycloidal disk 1542 through the needle roller 3 and the output flange, and the other end of the output shaft 151 is connected to the transmission assembly 10.

[0080] Specifically, the output flange is integrally formed with the output shaft 151 and is located at the end of the output shaft 151 facing the secondary cycloidal deceleration assembly 154. The output flange is provided with several output connection holes corresponding to the needle rollers 3. The needle rollers 3 are cylindrical structures and the output connection holes are round holes. The needle rollers 3 extend into the output connection holes so that when the secondary cycloidal disk 1542 rotates, it drives the output flange to rotate, thereby driving the output shaft 151 to rotate.

[0081] In this embodiment, the number of primary cycloidal teeth 1533 or secondary cycloidal teeth 1543 is 27. That is, the primary input shaft 1531 or secondary input shaft 1541 needs to rotate 27 times to make the primary cycloidal disk 1532 or secondary cycloidal disk 1542 rotate one revolution. In other words, the single-stage reduction ratio of the primary cycloidal reduction assembly 153 or secondary cycloidal reduction assembly 154 is 27. The two-stage reduction ratio is 27 x 27 = 729, thus achieving a single-stage reverse drive efficiency of 90%, and a total reverse drive efficiency of 0.9 x 0.9 = 0.81, which is not less than 81%.

[0082] In this embodiment, the housing 1 also includes multiple bearings, which are respectively sleeved on the outer periphery of the primary input shaft 1531 or the secondary input shaft 1541, and the bearings are sleeved on the outer periphery of the output shaft 151, so as to facilitate the rotation of the primary input shaft 1531, the secondary input shaft 1541 and the output shaft 151. The bearings play the role of supporting the primary input shaft 1531, the secondary input shaft 1541 and the output shaft 151. This is the prior art and will not be described in detail here.

[0083] In this embodiment, the transmission assembly 10 includes a first connecting rod 11, a second connecting rod 12, and a third connecting rod 17. The transmission assembly 10 includes a housing 13, on which a sliding groove 131 is provided. The first connecting rod 11, the second connecting rod 12, and the third connecting rod 17 are connected in sequence by a pin 14. The pin 14 extends into the sliding groove 131, and both ends of the pin 14 extend out of the sliding groove 131. The size of the end of the pin 14 extending out of the sliding groove 131 is larger than the size of the sliding groove 131.

[0084] Specifically, the transmission assembly 10 includes a crank 16 connected to an output shaft 151. One end of a first connecting rod 11 is connected to the crank 16, and the other end is connected to a third connecting rod 17. The other end of the third connecting rod 17 is connected to a second connecting rod 12. A latch 2 is provided at the end of the second connecting rod 12 away from the third connecting rod 17. The latch 2 is used to connect to the door body. The first connecting rod 11, the second connecting rod 12, and the third connecting rod 17 are hinged by a pin 14, which extends into a slide groove 131. The slide groove 131 extends along the transmission direction to guide the first connecting rod 11, the second connecting rod 12, and the third connecting rod 17 when the output shaft 151 drives the crank 16. By setting the end of the pin 14 extending out of the slide groove 131 to be larger, the end of the pin 14 is prevented from detaching from the slide groove 131, thereby improving the stability and reliability of the transmission.

[0085] This embodiment also provides a steam oven, which includes the aforementioned electric hinge, so that the electric door can be manually opened and closed in the event of a power outage to take out and put in food, thereby improving ease of use.

[0086] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An electric hinge, characterized in that, The electric hinge includes a transmission assembly, and the electric hinge further includes: A cycloidal geared motor, wherein the output shaft of the cycloidal geared motor is connected to the transmission assembly, and the reverse drive efficiency of the cycloidal geared motor is not less than 81% when the electric hinge is de-energized.

2. Motorised hinge according to claim 1, characterised in that, The cycloidal geared motor includes a motor, a first-stage cycloidal reduction assembly, and a second-stage cycloidal reduction assembly. The output end of the motor is connected to the first-stage cycloidal reduction assembly, the output end of the first-stage cycloidal reduction assembly is connected to the second-stage cycloidal reduction assembly, the output end of the second-stage cycloidal reduction assembly is connected to an output shaft, and the output shaft is connected to the transmission assembly.

3. Motorised hinge according to claim 2, characterised in that, The primary cycloidal reduction assembly includes a primary input shaft and a primary cycloidal disk. The outer edge of the primary cycloidal disk is provided with primary cycloidal teeth. The cycloidal reduction motor also includes a housing for accommodating the primary cycloidal disk. The housing is provided with primary cycloidal tooth grooves corresponding to the primary cycloidal teeth. The primary input shaft includes an eccentric section that extends into the primary input hole of the primary cycloidal disk. The eccentric section abuts against the wall of the primary input hole, and the primary cycloidal teeth and the primary cycloidal tooth grooves mesh at the points where the eccentric section abuts against the primary input hole.

4. Motorised hinge according to claim 3, characterised in that, The primary input shaft further includes a first segment and a third segment. The eccentric segment is located between the first segment and the third segment. The first segment and the third segment are coaxially arranged. The axis of the eccentric segment is offset from the axes of the first segment and the third segment. The third segment is coaxially connected to the output end of the motor.

5. Motorised hinge according to claim 4, characterised in that, The two-stage cycloidal deceleration assembly includes a two-stage input shaft and a two-stage cycloidal disk. The outer edge of the two-stage cycloidal disk is provided with two-stage cycloidal teeth. The housing is provided with two-stage cycloidal tooth grooves corresponding to the two-stage cycloidal teeth. A two-stage input hole is opened at the axis of the two-stage cycloidal disk. One end of the two-stage input shaft extends into the two-stage input hole, and the other end of the two-stage input shaft is coaxially connected to the first segment. The two-stage cycloidal teeth and the two-stage cycloidal tooth grooves mesh at the contact points between the two-stage input shaft and the two-stage input hole.

6. Motorised hinge according to claim 5, characterised in that, The primary cycloidal disc also includes a needle roller, which is arranged circumferentially on the outer periphery of the primary input hole and extends toward the axial direction of the primary cycloidal disc. The secondary input shaft includes a secondary flange, on which a secondary connecting hole is formed circumferentially, and the needle roller extends into the secondary connecting hole.

7. Motorised hinge according to claim 6, characterised in that, The secondary cycloidal disk also includes a needle roller, which is arranged circumferentially on the outer periphery of the secondary input hole and extends axially toward the secondary cycloidal disk. The output shaft includes an output flange with an output connection hole circumferentially formed on the output flange. One end of the output shaft is connected to the secondary cycloidal disk through the needle roller and the output flange, and the other end of the output shaft is connected to the transmission assembly.

8. The motorized hinge of claim 5, wherein, The number of the primary cycloidal teeth or the secondary cycloidal teeth is 27.

9. The electric hinge as described in claim 1, characterized in that, The transmission assembly includes a first connecting rod, a second connecting rod, and a third connecting rod. The transmission assembly includes a housing with a sliding groove. The first connecting rod, the second connecting rod, and the third connecting rod are connected in sequence by a pin. The pin extends into the sliding groove, and both ends of the pin extend out of the sliding groove, with the size of the end of the pin extending out of the sliding groove being larger than the size of the sliding groove.

10. A steam oven, characterized by The steam oven includes an electric hinge as described in any one of claims 1-9.

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