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 electric hinge, 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, the first connecting rod and the second connecting rod are connected through the flexible connecting part, and the first connecting rod is connected with the second connecting rod through the flexible connecting part. The electric hinge further comprises a damping part, one end of the damping part is arranged on a support of the electric hinge, an output shaft of the damping part is hinged to the second connecting rod, and when the electric hinge is locked, the output shaft of the damping part provides resistance larger than reset elastic force of the electric hinge. And the resistance is smaller than the reset pulling force of the electric hinge. According to the electric hinge, the damping part is arranged and used for absorbing kinetic energy of the second connecting rod, so that the second connecting rod and the first connecting rod cannot directly abut against each other, and the situations of pause, collision and abnormal sound occurring in the door closing process of a door body connected with the electric hinge are reduced.

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] To address the self-locking issue in the event of a power outage, current electric hinges typically employ a flexible connection structure, allowing the door connected to the electric hinge to be manually opened and closed in the event of a power outage.

[0003] However, in actual use, it was found that when the electric hinge is locked, the door connected to the hinge lies flat, resulting in a large weight and load. At this point, the tension spring force of the electric hinge is roughly balanced or slightly less than the load. But as the door is gradually pulled up, the load decreases, and the tension spring force becomes significantly greater. This may cause some parts of the transmission mechanism in the electric hinge to move faster, while others move slower. In other words, the flexible connection structure provides a large manual operation space, leading to collisions in the transmission mechanism, resulting in jerking, collisions, and abnormal noises during door closing. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect in the prior art where the reserved space for manual operation causes the transmission structure to collide and produce abnormal noise, and to provide an electric hinge and an electric door and 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 further includes a flexible connecting portion through which the first link and the second link are connected. The electric hinge also includes:

[0007] The shock absorber has one end mounted on the bracket of the electric hinge. The output shaft of the shock absorber is hinged to the second connecting rod. When the electric hinge is locked, the output shaft of the shock absorber provides resistance greater than the reset elastic force of the electric hinge, and the resistance is less than the reset tension of the electric hinge.

[0008] In this solution, a shock-absorbing part is provided, with one end of the shock-absorbing part hinged to the second link. The shock-absorbing part provides resistance when the second link moves toward the first link. Compared with a separate flexible connection structure, this can overcome the problem that the second link moves too fast and directly abuts against the first link due to the reset spring force when the electric hinge is locked. By using the shock-absorbing part to absorb the kinetic energy of the second link, the second link and the first link will not directly abut against each other, thereby reducing the occurrence of jerking, collision and abnormal noise in the door body connected to the electric hinge during the closing process.

[0009] Preferably, the electric hinge further includes a reset assembly, one end of which is hinged to the end of the second link facing the first link.

[0010] In this solution, the above settings improve the reset efficiency of the second link and also effectively lock the door when the second link is connected to a door with a large load, i.e., close the door.

[0011] Preferably, the reset assembly includes a tension spring and a hook, the hook being disposed between the second link and the tension spring.

[0012] In this solution, the above settings are used to achieve effective reset of the second link.

[0013] 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.

[0014] In this scheme, the above settings are used to guide the movement of the first link and the second link.

[0015] 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.

[0016] In this solution, the stability and reliability of the connection are improved by increasing the number of flexible connectors.

[0017] Preferably, the transmission assembly further includes a geared motor, the output shaft of which is connected to the first connecting rod. The geared motor is mounted on the bracket of the electric hinge and located on the side of the housing. The shock-absorbing part is located at the end of the bracket near the second connecting rod. The bracket is fixedly connected to the housing.

[0018] In this solution, the above settings are used to achieve an electrically driven electric hinge.

[0019] 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.

[0020] In this scheme, the above settings are used to drive the first link to move.

[0021] 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 hinged to the latch.

[0022] In this solution, the above-mentioned settings are used to unlock or lock the door connected to the electric hinge when the latch moves.

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

[0024] In this design, the electric door includes the aforementioned electric hinge. When locked, the shock-absorbing part absorbs the kinetic energy of the second link under the restoring force, allowing the second link to move at a constant speed. This overcomes the problem of the second link colliding with the first link during closing and reduces abnormal noise. Furthermore, in the event of a power outage, the electric door can be manually opened or closed, overcoming the self-locking issue 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 to prevent jerking or abnormal noise when the electric door opens and closes. At the same time, in the event of a power outage, the electric door can be manually opened and closed to take out and put in food, improving ease of use.

[0027] The positive and progressive effects of this utility model are as follows: By setting a shock-absorbing part, one end of which is hinged to the second link, the shock-absorbing part provides resistance when the second link moves toward the first link. Compared with setting a flexible connection structure alone, this can overcome the problem that the second link moves too fast and directly abuts against the first link due to the reset spring force when the electric hinge is locked. By using the shock-absorbing part to absorb the kinetic energy of the second link, the second link and the first link will not directly abut, thereby reducing the occurrence of jerking, collision and abnormal noise in the door body connected to the electric hinge during the closing process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the unlocking of the electric hinge according to a preferred embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of an electric hinge according to a preferred embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the locking mechanism of an electric hinge according to a preferred embodiment of the present invention.

[0031] Figure 4 This diagram shows the positional relationship between the shock-absorbing part and the second connecting rod in a preferred embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] Flexible connection part 1

[0034] Locking tongue 2

[0035] Shock Absorber 3

[0036] Bracket 4

[0037] Transmission assembly 10

[0038] First link 11

[0039] Second link 12

[0040] Casing 13

[0041] Slide 131

[0042] Pin 14

[0043] Gear motor 15

[0044] Crank 16

[0045] Reset component 20

[0046] tension spring 21

[0047] Hook 22 Detailed Implementation

[0048] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0049] This embodiment provides an electric hinge, the specific structure of which is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 4 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 a flexible connecting part 1, through which the first link 11 and the second link 12 are connected. The electric hinge also includes:

[0050] The shock absorber 3 has one end mounted on the bracket 4 of the electric hinge. The output shaft of the shock absorber 3 is hinged to the second connecting rod 12. When the electric hinge is locked, the output shaft of the shock absorber 3 provides resistance greater than the return spring force of the electric hinge, and the resistance is less than the return tension of the electric hinge.

[0051] Specifically, this embodiment takes the connection between the second link 12 and the door as an example. The first link 11 and the second link 12 are connected by a flexible connecting part 1, and the movement of the first link 11 can drive the movement of the second link 12 to open or lock the door. The shock-absorbing part 3 is provided on the bracket 4. The shock-absorbing part 3 can be a damping buffer or a spring in the prior art. When the electric hinge is locked, the damping buffer or spring absorbs the kinetic energy of the second link 12 moving towards the first link 11. The second link 12 moves quickly due to the influence of the return spring force and directly abuts the first link 11. The resistance provided by the damping buffer or spring to prevent the second link 12 from moving quickly is greater than the return spring force acting on the second link 12. It should be noted that when locked, the electric hinge applies a force to the first link 11 via a drive motor or servo motor, causing the first link 11 to move away from the second link 12. This, in turn, creates a pulling force on the second link 12. This pulling force is greater than the resistance, thus locking the electric hinge. It is understood that by providing the shock-absorbing part 3, the second link 12 can maintain a constant speed during the closing process, preventing sudden changes in speed and avoiding abrupt loss of force that could cause the door connected to the electric hinge to jerk, collide, or make abnormal noises during closing.

[0052] In addition, in this embodiment, the flexible connecting part 1 is a rope. 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, that is, a state without force. Then, the structure connected to the second connecting rod 12, such as the door, can be manually pulled so that when the second connecting rod 12 moves away from the first connecting rod 11, the flexible connecting part 1, which is in a relaxed state, can be stretched, so that the electric hinge can be manually opened in the power-off state, avoiding the situation of the transmission structure self-locking in the case of rigid connection.

[0053] 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.

[0054] In this embodiment, the electric hinge also includes a reset component 20, one end of which is hinged to the end of the second link 12 facing the first link 11.

[0055] Specifically, one end of the reset assembly 20 is connected to the end of the electric hinge, and the other end is hinged to the end of the second link 12 facing the first link 11. Compared to the reset assembly 20 being connected to the first link 11, the reset assembly 20 being connected to the second link 12 allows for direct application of a reset spring force to the load on the door body connected to the second link 12, reducing the spring force transmission structure and improving the effective reset of the door body and the second link 12. It also effectively locks the door when the second link 12 is connected to a door body with a large load, i.e., closes the door.

[0056] In this embodiment, the reset assembly 20 includes a tension spring 21 and a hook 22, with the hook 22 disposed between the second link 12 and the tension spring 21.

[0057] Specifically, one end of the tension spring 21 is connected to the end of the electric hinge, and the other end is attached to a hook 22. The hook 22 is located between the tension spring 21 and the second connecting rod 12. In this embodiment, there are two hooks 22, located on both sides of the tension spring 21. In other embodiments, the number of hooks 22 may be one or more, which will not be elaborated further here. By setting two hooks 22, the load on the door body connected to the second connecting rod 12 is distributed by increasing the number of hooks 22, and the stability during reset is improved. This also prevents the second connecting rod 12 from shifting towards the side with fewer hooks 22 when the number of hooks 22 is odd.

[0058] 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.

[0059] 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.

[0060] Understandably, the shock absorber 3 is hinged to the output shaft via the pin 14 on the second link 12, and the hanger 22 is also connected to the tension spring 21 via the pin 14 on the second link 12.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] In addition, when the electric hinge is unlocked, 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.

[0066] In this embodiment, the transmission assembly 10 further includes a geared motor 15. The output shaft of the geared motor 15 is connected to the first connecting rod 11. The geared motor 15 is mounted on the bracket 4 of the electric hinge and located on the side of the housing 13. The shock-absorbing part 3 is located at one end of the bracket 4 near the second connecting rod 12. The bracket 4 is fixedly connected to the housing 13.

[0067] 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.

[0068] The bracket 4 is clamped on opposite sides of the housing 13. A rod is mounted on the bracket 4. One end of the shock-absorbing part 3 is hinged to the rod, and the other end is hinged to the pin 14 on the second connecting rod 12. It is understood that the rod is located above the housing 13. In this embodiment, the geared motor 15 is located on the side of the bracket 4 and is connected to the bracket 4 by bolts.

[0069] 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.

[0070] 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.

[0071] 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 opposite to the first link 11 is hinged to the locking tongue 2.

[0072] 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 is hinged to the latch 2. 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.

[0073] The working principle of electric hinges is as follows:

[0074] 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 to drive the latch 2 to unlock the door. At this time, the tension spring 21 is stretched and has a restoring force. When unlocking, the output shaft of the damping part 3 is stretched and does not generate resistance. 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 connection part 1. At the same time, under the action of the restoring force of the tension spring 21 and the hook 22, the second link 12 has kinetic energy. To overcome this kinetic energy, the damping part 3 provides resistance. The resistance is greater than the restoring force and less than the pulling force provided by the first link 11, so that when locked, the second link 12 and the door connected to it can move at a constant speed, avoiding jerking, collision and abnormal noise.

[0075] This embodiment also provides an electric door, which includes the aforementioned electric hinge. When locked, the shock-absorbing part 3 absorbs the kinetic energy of the second link 12 under the restoring force, allowing the second link 12 to move at a constant speed. This overcomes the problem of the second link 12 colliding with the first link 11 during closing and reduces abnormal noise. Furthermore, in the event of a power outage, the electric door can be manually opened or closed, overcoming the self-locking issue of traditional electric hinges.

[0076] This embodiment also provides a steam oven, which includes the aforementioned electric door to avoid jerking or abnormal noise when the electric door is opened or closed. At the same time, in the power-off state, the electric door can be manually opened and closed to take out and put in food, improving the convenience of use.

[0077] 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 including a first link and a second link, the electric hinge further comprising a flexible connecting portion, the first link and the second link being connected through the flexible connecting portion, characterized in that, The electric hinge also includes: The shock absorber has one end mounted on the bracket of the electric hinge. The output shaft of the shock absorber is hinged to the second connecting rod. When the electric hinge is locked, the output shaft of the shock absorber provides resistance greater than the reset elastic force of the electric hinge, and the resistance is less than the reset tension of the electric hinge.

2. The electric hinge as described in claim 1, characterized in that, The electric hinge also includes a reset assembly, one end of which is hinged to the end of the second link facing the first link.

3. The electric hinge as described in claim 2, characterized in that, The reset assembly includes a tension spring and a hook, the hook being disposed between the second link and the tension spring.

4. The electric hinge as described in claim 3, 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.

5. The electric hinge as described in claim 4, 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.

6. The electric hinge as described in claim 5, 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 mounted on the bracket of the electric hinge and located on the side of the housing. The shock-absorbing part is located at the end of the bracket near the second connecting rod. The bracket is fixedly connected to the housing.

7. The electric hinge as described in claim 6, 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.

8. The electric hinge as described in claim 4, 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 hinged to the locking tongue.

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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