Electric hinge as well as electric door and steaming oven comprising same

Abstract

The utility model provides an electric hinge and an electric door and a steaming oven comprising the same, the electric hinge comprises a transmission assembly, the transmission assembly comprises a first connecting rod and a second connecting rod, the electric hinge further comprises a flexible connecting part, two ends of the flexible connecting part are respectively connected with the first connecting rod and the second connecting rod, and when the electric hinge is powered off, the flexible connecting part is connected with the first connecting rod and the second connecting rod. One end of the first connecting rod abuts against one end of the second connecting rod, and the flexible connecting part is in a loose state. By arranging the flexible connecting part, when the electric hinge is locked and powered off and the first connecting rod abuts against the second connecting rod, the flexible connecting part is in a loose state, namely a non-stress state, and then a structure, such as a door body or a spring bolt, connected with the second connecting rod is manually pulled, so that the second connecting rod can be far away from the first connecting rod; the flexible connecting part in the relaxed state can be stretched so that the electric hinge can be manually opened in the power-off state, and the situation that a transmission structure is self-locked under the rigid connection situation is avoided.

Description

Technical Field

[0001] This utility model specifically relates to an electric hinge and an electric door and 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, in the event of a power outage, it is difficult to manually open or close the door of an electrically operated steam oven. This is because the drive component in the electric hinge is a geared motor with a worm gear and a reduction ratio of over 600 (the motor speed is around 3000 RPM, with an output speed of 5 RPM). When a device with this type of 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 requires the motor to rotate for the door to move. This necessitates manually reversing the motor's rotation. However, this geared motor, due to the worm gear, has extremely low efficiency when the worm gear reverses the rotation, and the worm gear may even self-lock. Furthermore, the large reduction ratio and numerous reduction stages also result in very low reversing efficiency. Therefore, once a power outage occurs in an electrically operated steam oven, it is difficult or even impossible for the user to manually open or close the door, 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 an electric door and a steam oven containing the hinge.

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

[0006] An electric hinge includes a transmission assembly comprising a first link and a second link, and the electric hinge further includes:

[0007] The flexible connecting part has two ends connected to the first connecting rod and the second connecting rod, respectively. When the electric hinge is locked and de-energized, one end of the first connecting rod abuts against one end of the second connecting rod, and the flexible connecting part is in a relaxed state. When the electric hinge is unlocked and de-energized, the first connecting rod and the second connecting rod are spaced apart and the flexible connecting part is in a taut state.

[0008] In this solution, a flexible connecting part is incorporated. When the electric hinge is locked and power is off, and the first and second links are in contact, the flexible connecting part is in a relaxed state, i.e., unstressed. This allows manual pulling of the structure connected to the second link, such as a door or latch, to move the second link away from the first link. The relaxed flexible connecting part can then be stretched, enabling manual opening of the electric hinge in the power-off state, avoiding self-locking of the transmission structure under rigid connection conditions. Similarly, when the electric hinge is unlocked and power is off, the flexible connecting part is tightened, creating a locking space between the second and first links. Pushing the latch or door moves the second link closer to the first link, gradually relaxing the flexible connecting part from a tightened state, allowing manual closing of the electric hinge in the power-off state.

[0009] Preferably, the flexible connection is a rope or strap.

[0010] In this solution, the above-mentioned settings are used to achieve a flexible connection between the first link and the second link.

[0011] Preferably, the transmission assembly includes a housing, the second connecting rod is located inside the housing, the housing has a sliding groove, and both the first connecting rod and the second connecting rod are provided with pins that extend into the sliding groove.

[0012] In this scheme, the above settings are used to guide the movement of the first link and the second link.

[0013] Preferably, the slide groove is disposed on opposite sides of the housing, the pin is disposed on opposite sides of the first connecting rod and the second connecting rod, both ends of the pin extend out of the slide groove, and the size of the end of the pin extending out of the slide groove is larger than the size of the slide groove, and the flexible connection portion connects from the end of the pin on the first connecting rod extending out of the slide groove to the end of the pin on the second connecting rod extending out of the slide groove.

[0014] In this solution, the stability and reliability of the connection are improved by increasing the number of flexible connectors.

[0015] Preferably, the transmission assembly further includes a geared motor, the output shaft of which is connected to the first connecting rod, and the geared motor is disposed on the side of the housing and fixedly connected to the housing.

[0016] In this solution, the above settings are used to achieve an electrically driven electric hinge.

[0017] Preferably, the transmission assembly further includes a crank connected to one end of the first connecting rod, and the crank passes through the output shaft of the geared motor, through which the first connecting rod approaches or moves away from the second connecting rod.

[0018] In this scheme, the above settings are used to drive the first link to move.

[0019] Preferably, the electric hinge further includes a latch, which is hinged to a first end of the housing, and the end of the second link opposite to the first link is used to abut the latch.

[0020] In this solution, the above-mentioned settings are used to unlock or lock the door connected to the electric hinge when the latch moves.

[0021] Preferably, the end of the second link facing the latch is hinged to the latch.

[0022] In this solution, the above-mentioned settings enable a hinged connection to provide a faster and more reliable unlocking or locking response compared to abutment.

[0023] An electric door, the electric door including the electric hinges as described above.

[0024] In this solution, the electric door includes the aforementioned electric hinge, so that the electric door can be manually opened or closed in the event of a power outage, overcoming the self-locking problem of traditional electric hinges.

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

[0026] In this solution, the steam oven includes the aforementioned electric door, which allows for manual opening and closing of the electric door to retrieve and place food 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: By incorporating a flexible connecting part, when the electric hinge is locked and power is off, and the first and second connecting rods are in contact, the flexible connecting part is in a relaxed state, i.e., unstressed. This allows manual pulling of the structure connected to the second connecting rod, such as a door or latch, to move the second connecting rod away from the first connecting rod. The relaxed flexible connecting part can then be stretched, enabling manual opening of the electric hinge in the power-off state, avoiding the self-locking of the transmission structure under rigid connection conditions. Similarly, when the electric hinge is unlocked and power is off, the flexible connecting part is tightened, creating a locking space between the second and first connecting rods. At this time, pushing the latch or door to bring the second connecting rod closer to the first connecting rod gradually changes the flexible connecting part from a tightened state to a relaxed state, allowing manual closing of the electric hinge in the power-off state. 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 2This is a schematic diagram of the structure of an electric hinge according to a preferred embodiment of the present invention.

[0030] Figure 3 This diagram shows the positional relationship between the first link and the second link in a preferred embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] Flexible connection part 1

[0033] Locking tongue 2

[0034] Transmission assembly 10

[0035] First link 11

[0036] Second link 12

[0037] Casing 13

[0038] Slide 131

[0039] Pin 14

[0040] Gear motor 15

[0041] Crank 16 Detailed Implementation

[0042] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0043] This embodiment provides an electric hinge, the specific structure of which is as follows: Figure 1 , Figure 2 and Figure 3 As shown, the electric hinge includes a transmission assembly 10, which includes a first link 11 and a second link 12. The electric hinge also includes:

[0044] The flexible connecting part 1 has two ends connected to the first connecting rod 11 and the second connecting rod 12 respectively. When the electric hinge is locked and de-energized, one end of the first connecting rod 11 abuts against one end of the second connecting rod 12, and the flexible connecting part 1 is in a relaxed state. When the electric hinge is unlocked and de-energized, the first connecting rod 11 and the second connecting rod 12 are spaced apart and the flexible connecting part 1 is in a tensioned state.

[0045] Specifically, this embodiment uses the connection between the second link 12 and the door as an example. The ends of the first link 11 and the second link 12 abut against each other, and the movement of the first link 11 can drive the movement of the second link 12 to open or lock the door. A flexible connecting part 1 is provided between the first link 11 and the second link 12 to replace a rigid connecting structure such as a spring or other links. When the electric hinge is locked and the power is off, one end of the first link 11 abuts against one end of the second link 12, and the flexible connecting part 1 is in a relaxed state, i.e., a state without force. Then, when the structure connected to the second link 12, such as the door, is manually pulled, the flexible connecting part 1 in the relaxed state can be stretched when the second link 12 moves away from the first link 11, so that the electric hinge can be manually opened in the power-off state, avoiding the self-locking of the transmission structure in the case of a rigid connection.

[0046] Similarly, when the electric hinge is unlocked and the power is cut off, the flexible connection part 1 is tightened, so that there is a locking space between the second link 12 and the first link 11. At this time, the door body is pushed to drive the second link 12 to approach the first link 11, and the flexible connection part 1 gradually changes from the tightened state to the relaxed state, so that the electric hinge can be manually closed in the power-off state, and the door body connected to the second link 12 can be locked accordingly.

[0047] Furthermore, in this embodiment, the flexible connecting part 1 is a rope. The rope is a structure in the prior art. Compared with other structures, such as springs, the rope has a larger range of motion for the second link 12 when it is relaxed. That is, the second link 12 can abut against the first link 11 to realize the manual opening or closing of the door connected to the electric hinge.

[0048] In this embodiment, the transmission assembly 10 includes a housing 13, a second connecting rod 12 located inside the housing 13, a sliding groove 131 provided on the housing 13, and a pin 14 provided on both the first connecting rod 11 and the second connecting rod 12, with the pin 14 extending into the sliding groove 131.

[0049] Specifically, the housing 13 has a groove 131 along its length. A pin 14 is provided on the second connecting rod 12, extending into the groove 131 so that the second connecting rod 12 slides within the housing 13. Similarly, a pin 14 is provided on the first connecting rod 11, extending into the groove 131. The first connecting rod 11 is used to connect to an electric drive structure, such as a drive motor in the prior art, to achieve electric drive of the electric hinge by moving it closer to or further away from the second connecting rod 12. The groove 131 and the pin 14 cooperate to guide the movement of the first connecting rod 11 and the second connecting rod 12, thereby enabling repeated use.

[0050] It should be noted that when the electric hinge opens the door, the first link 11 abuts against the second link 12, pushing the second link 12 to move along the slide groove 131, thereby driving the door body connected to the second link 12 to move, thus realizing electric door opening. In the open state, the first link 11 and the second link 12 are spaced apart rather than abutting each other, so that the second link 12 has space to move toward the first link 11 along the extension direction of the slide groove 131, that is, leaving room for manual locking operation.

[0051] When the electric hinge closes the door, the first link 11 drives the second link 12 to move in the opposite direction to the opening direction, the flexible connection part 1 is tightened, and when locked in place, the first link 11 rotates in the opposite direction through the drive motor, so that the first link 11 and the second link 12 abut against each other, thereby making the flexible connection part 1 enter a relaxed state, leaving room for manual unlocking.

[0052] In this embodiment, the slide groove 131 is disposed on opposite sides of the housing 13, and the pin 14 is disposed on opposite sides of the first connecting rod 11 and the second connecting rod 12. Both ends of the pin 14 extend out of the slide groove 131, and the size of the end of the pin 14 extending out of the slide groove 131 is larger than the size of the slide groove 131. The flexible connection part 1 is connected from the end of the pin 14 on the first connecting rod 11 extending out of the slide groove 131 to the end of the pin 14 on the second connecting rod 12 extending out of the slide groove 131.

[0053] Specifically, two slide grooves 131 are provided and located on opposite sides of the housing 13. The second connecting rod 12 is located between the two slide grooves 131, and the pin 14 on the second connecting rod 12 passes through the second connecting rod 12 and extends out of the slide groove 131. Similarly, the first connecting rod 11 is located between the two slide grooves 131, and the pin 14 on the first connecting rod 11 passes through the first connecting rod 11 and extends out of the slide groove 131. By setting the end of the pin 14 extending out of the slide groove 131 to be larger than the size of the slide groove 131, the pin 14 is prevented from detaching from the slide groove 131. In addition, the flexible connection part 1 is located outside the housing 13. Specifically, the end of the pin 14 on the first connecting rod 11 extending out of the slide groove 131 is connected to the end of the pin 14 on the second connecting rod 12 extending out of the slide groove 131. It can be understood that the pin 14 has two ends. That is to say, in this embodiment, there are two flexible connection parts 1, located on the first side and the second side of the housing 13 respectively. By increasing the number of flexible connection parts 1, the connection stability and reliability are improved.

[0054] In addition, when the first link 11 and the second link 12 abut against each other, the flexible connection part 1 is not subject to the force of the abutment between the ends of the first link 11 and the second link 12, thereby improving the service life of the flexible connection part 1.

[0055] In this embodiment, the transmission assembly 10 further includes a geared motor 15, the output shaft of which is connected to the first connecting rod 11, and the geared motor 15 is disposed on the side of the housing 13 and fixedly connected to the housing 13.

[0056] Specifically, the geared motor 15 is a geared structure in the prior art. The geared motor 15 is used to drive the first link 11 to move. The pin 14 on the second link 12 is hinged to the second link 12. The pin 14 on the first link 11 is fixedly connected to the first link 11. When the geared motor 15 drives the first link 11 to move, the pin 14 on the first link 11 mainly bears the thrust from the first link 11. The pin 14 is hardly subjected to the component force that makes it rotate. Thus, the geared motor 15 electrically drives the second link 12 to reciprocate along the length direction of the slide groove 131 to unlock or lock the door connected to the second link 12.

[0057] In this embodiment, the transmission assembly 10 further includes a crank 16, which is connected to one end of the first connecting rod 11 and passes through the output shaft of the geared motor 15. The first connecting rod 11 moves closer to or further away from the second connecting rod 12 through the crank 16.

[0058] Specifically, the crank 16 is a crank structure in the prior art. A crank 16 is also provided between the first connecting rod 11 and the geared motor 15. The crank 16 is set at an angle to the first connecting rod 11 so that the rotational component of the geared motor 15 is converted into a thrust that pushes the first connecting rod 11 to move along the slide groove 131.

[0059] In this embodiment, the electric hinge also includes a locking tongue 2, which is hinged to the first end of the housing 13, and the end of the second link 12 facing away from the first link 11 is used to abut against the locking tongue 2.

[0060] Specifically, the latch 2 is a rod that is hinged to the first end of the housing 13. The latch 2 also has a fixing rod, that is, from the appearance, the latch 2 is an "L" shaped rod. One end of the second connecting rod 12 extends into the bend of the latch 2, and the bend is located at a different position from the hinge point between the latch 2 and the housing 13. The second connecting rod 12 is used to abut against the latch 2 to push the latch 2 to move. The door body is connected to the latch 2 so as to unlock or lock the door body connected to the electric hinge when the latch moves.

[0061] The working principle of electric hinges is as follows:

[0062] When the electric hinge unlocks the door, the geared motor 15 drives the crank 16 to move, causing the first link 11 to move toward the second link 12. The second link 12 is pushed by the first link 11, causing the latch 2 to unlock the door. When the electric hinge locks the door, the geared motor 15 drives the crank 16 to move, causing the first link 11 to move away from the second link 12 and pull the second link 12 through the flexible connecting part 1, thus locking the door with the latch 2.

[0063] In this embodiment, the end of the second link 12 facing the latch 2 is hinged to the latch 2. Compared to abutting, hinged connection allows for faster and more reliable unlocking or locking response. Simultaneously, hinged connection can also effectively pull the latch to move.

[0064] This embodiment provides an electric door, which includes the aforementioned electric hinge, so that the electric door can be manually opened or closed in the event of a power outage, overcoming the self-locking problem of traditional electric hinges.

[0065] This embodiment also provides a steam oven, which includes the aforementioned electric door, 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 the convenience of use.

[0066] 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, the electric hinge comprising a transmission assembly, the transmission assembly comprising a first link and a second link, characterized in that, The electric hinge also includes: The flexible connecting part has two ends connected to the first connecting rod and the second connecting rod, respectively. When the electric hinge is locked and de-energized, one end of the first connecting rod abuts against one end of the second connecting rod, and the flexible connecting part is in a relaxed state. When the electric hinge is unlocked and de-energized, the first connecting rod and the second connecting rod are spaced apart and the flexible connecting part is in a taut state.

2. The electric hinge as described in claim 1, characterized in that, The flexible connecting part is a rope or strap.

3. The electric hinge as described in claim 2, characterized in that, The transmission assembly includes a housing, the second connecting rod is located inside the housing, the housing has a sliding groove, and both the first connecting rod and the second connecting rod are provided with pins that extend into the sliding groove.

4. The electric hinge as described in claim 3, characterized in that, The slide groove is disposed on opposite sides of the housing, and the pin is disposed on opposite sides of the first connecting rod and the second connecting rod. Both ends of the pin extend out of the slide groove, and the size of the end of the pin extending out of the slide groove is larger than the size of the slide groove. The flexible connection part connects from the end of the pin on the first connecting rod extending out of the slide groove to the end of the pin on the second connecting rod extending out of the slide groove.

5. The electric hinge as described in claim 4, characterized in that, The transmission assembly also includes a geared motor, the output shaft of which is connected to the first connecting rod. The geared motor is disposed on the side of the housing and fixedly connected to the housing.

6. The electric hinge as described in claim 5, characterized in that, The transmission assembly also includes a crank, which is connected to one end of the first connecting rod and passes through the output shaft of the geared motor. The first connecting rod moves closer to or further away from the second connecting rod via the crank.

7. The electric hinge as described in claim 3, characterized in that, The electric hinge also includes a locking tongue, which is hinged to the first end of the housing, and the end of the second link opposite to the first link is used to abut the locking tongue.

8. The electric hinge as described in claim 7, characterized in that, The end of the second link facing the latch is hinged to the latch.

9. An electric gate, characterized in that, The electric door includes an electric hinge as described in any one of claims 1-8.

10. A steam oven, characterized in that, The steam oven includes the electric door as described in claim 9.

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