CN216277446U

CN216277446U - Automatic door opening device for double-door household appliance

Info

Publication number: CN216277446U
Application number: CN202121009005.2U
Authority: CN
Inventors: 陈小平; 周翔; 何启成; 候兴飞; 李之龙
Original assignee: Yunmi Internet Technology Guangdong Co Ltd
Current assignee: Yunmi Internet Technology Guangdong Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-04-12
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to an automatic door opener for double-door household appliances, which comprises a pushing mechanism, a door body pushing mechanism and a door body opening mechanism, wherein the pushing mechanism comprises push rods for pushing the door bodies; the loading mechanism comprises an energy storage assembly for storing the kinetic energy for pushing the push rod; the transmission mechanism is internally provided with a one-way transmission assembly; the power source is used for storing kinetic energy to the energy storage assembly; the transmission mechanism comprises a primary transmission assembly in transmission connection with the energy storage assembly and a secondary transmission assembly in transmission connection with the push rod, and the unidirectional transmission assembly is used for connecting the primary transmission assembly and the secondary transmission assembly in transmission to form an integral structure of the transmission mechanism; when the power source drives the primary transmission assembly to drive the loading mechanism to load, the secondary transmission assembly keeps static through the one-way transmission assembly; when the energy storage assembly releases kinetic energy, the loading mechanism drives the transmission mechanism to drive the two push rods to eject out simultaneously.

Description

Automatic door opening device for double-door household appliance

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of household appliances, in particular to an automatic door opening device for a double-door household appliance.

[ background of the utility model ]

In the household electrical appliances field, most household electrical appliances all adopt to have the door body to open and shut to form a relative inclosed accommodation space, along with the development of technique, improve automatic level, at present, household electrical appliances often can dispose automatic door opener, however, the inventor discovers following problem in the use:

at first, current door opener is at least including the push rod that is used for pushing the door body on the household electrical appliances, and under actuating mechanism's drive, the push rod stretches out and backs down the door body, however, when the door body was opened the back push rod and stretches out and expose in the outside, the user is in the in-process of using household electrical appliances, contacts the push rod that stretches out in the outside easily, simultaneously, because push rod and actuating mechanism rigid connection again, the user is colliding with the push rod, easily leads to danger.

In view of the above, there is a need to develop an automatic door opener for a double-door electrical appliance to solve the above problems.

[ Utility model ] content

Aiming at the defects of the prior art, the utility model aims to provide an automatic door opening device for a double-door household appliance, which comprises:

the pushing mechanism comprises two push rods for pushing the door body;

the loading mechanism comprises an energy storage assembly for storing the kinetic energy for pushing the push rod;

the transmission mechanism is internally provided with a one-way transmission assembly; and

the power source is used for driving the energy storage assembly to an energy storage state;

the transmission mechanism comprises a primary transmission assembly in transmission connection with the energy storage assembly and a secondary transmission assembly in transmission connection with the push rod;

when the power source drives the primary transmission assembly to drive the loading mechanism to load, the secondary transmission assembly keeps static through the one-way transmission assembly; when the energy storage assembly releases kinetic energy, the loading mechanism drives the transmission mechanism to drive the two push rods to push the two door bodies.

Preferably, the push rods are arranged on both sides of the breech mechanism.

Preferably, the loading mechanism comprises an elastic body, a sliding part and a locking assembly, and the sliding part and the elastic body form an energy storage assembly;

the transmission mechanism drives the sliding part to form a locking mechanism with the locking component, so that the elastic body is deformed to be in a stretching or compressing state, and kinetic energy is stored.

Preferably, the transmission mechanism, the sliding part and the push rod are in transmission through a gear and a rack;

racks are arranged on two sides of the sliding part, and the transmission mechanism comprises a first transmission gear serving as a primary transmission assembly and a second transmission gear serving as a secondary transmission assembly;

the number of the transmission mechanisms is two, the two transmission mechanisms are arranged on two sides of the sliding part, the first transmission gear is meshed with the rack, and the secondary transmission assembly is in matched transmission with the push rod.

Preferably, the one-way transmission assembly is in one-way transmission through the ratchet wheel and the stop pawl.

Preferably, the primary transmission component is a first transmission gear, and the secondary transmission component is a second transmission gear;

the ratchet wheel is integrally formed on the first transmission gear, the second transmission gear comprises a boss, and the stop pawl is installed on the boss and extends into a ratchet groove of the ratchet wheel.

Preferably, the first transmission gear and the second transmission gear are arranged concentrically;

the first transmission gear is internally provided with a hollow inner cavity, and ratchets are circumferentially arranged on the inner wall of the first transmission gear to form an inner ratchet wheel.

Preferably, the loading mechanism further comprises a guide part, a base body of the guide part extends outwards to form a slide rail, the slide part slides along the direction limited by the slide rail, and the elastic body is connected to a base surface of the slide part and the guide part.

Preferably, the locking assembly comprises an unlocking part and a locking block, the locking block is arranged on the sliding part, and a locking position is arranged at the mobile terminal end of the sliding rail;

the sliding part and the guide part are moved to the locking position through the locking block on the sliding part to form a locking structure, and the unlocking part pushes the locking block away from the locking position.

Preferably, the slide rail is provided with a slide groove extending along the moving direction of the sliding part, and the tail end of the slide groove forms a locking position;

the locking piece is connected in the sliding groove in a sliding mode, so that the locking piece slides along the track limited by the sliding groove.

Compared with the prior art, the utility model has the beneficial effects that:

the automatic door opener for the double-door household appliance enables the loading mechanism to drive the two push rods to eject out so as to push the door bodies of the two household appliances through the one-way transmission assembly in the transmission mechanism, meanwhile, the push rods are not limited by the one-way transmission assembly in the retraction process, and when the push rods are acted by external force, the two push rods can be independently retracted to realize abdicating, so that collision with the push rods is avoided, and the automatic door opener is safer to use.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

[ description of the drawings ]

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic perspective view of an automatic door opener according to the present invention;

FIG. 2 is a schematic view of a part of the structure of the automatic door opener according to the present invention;

FIG. 3 is a perspective view of the receiving plate of the present invention;

FIG. 4 is a schematic perspective view of the transmission mechanism of the present invention;

FIG. 5 is an enlarged partial schematic view of FIG. 4;

FIG. 6 is a perspective view of the loading mechanism of the present invention;

FIG. 7 is a schematic perspective view of the inner guide of the loading mechanism of the present invention;

fig. 8 is a schematic perspective view of the inner slide part of the loading mechanism of the present invention.

Description of reference numerals:

1. a pushing mechanism;

11. a push rod; 111. a pushing end; 112. a transmission section;

12. a bearing plate; 121. a connecting portion; 1211. positioning the opening; 122. buckling;

2. a transmission mechanism;

21. a first drive gear; 211. a first tooth portion; 212. an inner cavity; 213. a ratchet;

22. a second transmission gear;

221. a second tooth portion;

222. a boss; 2221. a notch;

223. a locking pawl;

224. a spring;

3. a loading mechanism;

31. a locking assembly; 311. an unlocking portion; 312. a locking block;

32. a guide portion;

321. a chute; 3211. a first guide hole; 3212. a second guide hole;

322. a slide rail;

33. a sliding part; 331. a guide groove; 332. positioning blocks; 333. a skirt edge; 334. an installation port; 335. a buffer block; 336. a limiting groove; 337. a rack;

34. an elastomer;

35. a base; 351. a bump;

4. a power source; 41. the gears are driven.

[ detailed description ] embodiments

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, which will enable those skilled in the art to practice the present invention with reference to the accompanying specification. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict. It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1 to 8, the present invention relates to an automatic door opening device for a double-door electric appliance, comprising:

the pushing mechanism 1 comprises two push rods 11 for pushing the door body on the household appliance;

the loading mechanism 3 comprises an energy storage assembly for storing kinetic energy for pushing the push rod 11;

the transmission mechanism 2 is used for connecting the push rod 11 and the loading mechanism 3 in a transmission way; and

the power source 4 is used for driving the energy storage assembly to an energy storage state, so that kinetic energy for pushing the door body is stored in the energy storage assembly;

the two push rods 11 can be used for pushing two door bodies on the household appliance, the transmission mechanism 2 is internally provided with a one-way transmission assembly, and when the power source 4 drives the transmission mechanism 2 to load the energy storage assembly, the transmission mechanism 2 is limited by the one-way transmission assembly to drive the push rods 11. The one-way transmission assembly is arranged in the transmission mechanism 2, and when the power source 4 drives the energy storage assembly in the loading mechanism 3, the push rod 11 is not driven by the transmission mechanism.

In a preferred embodiment, the loading mechanism 3 includes a sliding portion 33 and an elastic body 34, the sliding portion 33 and the elastic body 34 form an energy storage assembly, the transmission mechanism 2 is driven by a gear and a rack, two corresponding side walls of the sliding portion 33 are provided with racks 337, the transmission mechanism 2 is a gear, the push rod 11 is provided with a transmission portion 112 engaged with the gear, the racks 337 are engaged with the gear, so that the sliding portion 33, the gear and the push rod 11 form a transmission structure;

the push rod 11 is arranged on two sides of the sliding portion 33, the number of the transmission mechanisms 2 is two, the transmission mechanisms 2 are arranged on two sides of the sliding portion 33, the gear of the transmission mechanism 2 is meshed with the rack 337, the gear of the transmission mechanism 2 drives the push rod 11, and the power source 4 drives the gear in the transmission mechanism 2 so as to drive the sliding portion 33.

Specifically, the one-way transmission assembly is in one-way transmission through a ratchet wheel and a stop pawl 223, the stop pawl 223 is arranged on the push rod 11, the ratchet wheel is arranged on a gear of the transmission mechanism 2, a rack 337 on the sliding part 33 is meshed with the gear of the transmission mechanism 2, when the sliding part 33 moves, the gear rotates to drive the ratchet wheel to rotate, the stop pawl 223 extends into a tooth groove of the ratchet wheel, when the ratchet wheel rotates in the positive direction, the stop pawl 223 is limited in the ratchet wheel, so that the push rod 11 is pushed out of the door body under the driving of the sliding part 33; when the ratchet wheel rotates reversely, the ratchet teeth on the ratchet wheel push the stopping pawl 223, and the stopping pawl 223 is disengaged from the tooth groove of the ratchet wheel, so that the push rod 11 is kept stationary.

Meanwhile, when the push rod 11 is retracted, the stop pawl 223 on the push rod 11 is guided by the ratchet teeth on the ratchet wheel, the stop pawl 223 is disengaged from the tooth grooves of the ratchet wheel, and when the push rod 11 is retracted, the ratchet wheel is kept still.

The push rod 11 and the gear on the transmission mechanism 2 are driven in a one-way mode, namely the loading mechanism 3 can only drive the push rod 11 to push and extend out, when the push rod 11 extends out, the push rod 11 is in a free state, and under the pushing of external force, the push rod 11 can independently retract relative to the loading mechanism 3, so that danger is avoided when a user collides the push rod 11 when the push rod 11 extends out.

Further, the transmission mechanism 2 includes a first transmission gear 21 and a second transmission gear 22 driven by the first transmission gear 21;

wherein, the transmission part 112 is meshed with the second transmission gear 22, and the first transmission gear 21 is meshed with the rack 337; the number of teeth of first drive gear 21 is greater than second drive gear 22, drive through first drive gear 21 and second drive gear 22 cooperation, second drive gear 22's moment of torsion is bigger, make push rod 11 motion more stable, simultaneously, push rod 11's displacement is little for the displacement of sliding part 33, push rod 11's top thrust is greater than the door body and this body coupling power of household electrical appliances, through the length that has reduced the push rod 11 arm of force, the moment of the door body to push rod 11 reaction force has been reduced, push rod 11's life has been improved.

The first transmission gear 21 and the second transmission gear 22 are arranged concentrically; the first transmission gear 21 has a hollow inner cavity 212 and ratchet teeth 213 arranged on the inner wall of the hollow inner cavity to form an inner ratchet wheel, and the second transmission gear 22 includes a boss 222 located in the inner cavity 212, and a locking pawl 223 is connected to the boss 222.

Specifically, a groove capable of accommodating the stopping pawl 223 is formed in the circumferential position of the boss 222, the stopping pawl 223 is pivoted in the groove, so that part of the stopping pawl 223 extends out of the boss 222 and into a tooth groove of the ratchet tooth 213, a spring is further connected to the stopping pawl 223, when the stopping pawl 223 is limited by the ratchet tooth 213 through the spring, the stopping pawl 223 rotates and is accommodated in the groove, and therefore the second transmission gear 22 and the first transmission gear 21 move relatively, and the transmission of the loading mechanism 3 to the push rod 11 is limited.

The power source 4 drives the first transmission gear 21, the power output end of the power source 4 is provided with the driving gear 41, and the driving gear 41 is meshed with the first transmission gear 21, so that the power source 4 drives the first transmission gear 21, and the sliding part 33 is driven to be loaded to store kinetic energy for opening the door next time.

It should be noted that the one-way transmission assembly formed by the locking pawl 223 and the ratchet wheel adopted in the embodiment is only a preferred embodiment, and the one-way transmission assembly can also be selected as an overrunning clutch which is embedded in the transmission mechanism 2 and comprises a wedge type and a roller type; when the inner ring rotates anticlockwise, the roller is wedged to drive the outer ring to rotate, and the clutch is engaged; when the inner ring rotates clockwise, the roller retreats into the wide groove part, the outer ring is not moved to be separated, and the overrunning clutch can also realize one-way transmission, so the overrunning clutch also can be regarded as a specific implementation scheme in the embodiment.

In another preferred embodiment, the sliding portion 33 is mounted on the power output end of the power source 4, so that the power source 4 moves the sliding portion 33, so that the elastic body 34 is deformed to form kinetic energy.

In a preferred embodiment, the loading mechanism 3 further comprises a locking assembly 31, which comprises an unlocking portion 311 and a locking portion 312; a guide portion 32 on which a lock positioning is provided; the sliding part 33 is arranged in a sliding way with the guide part 32;

wherein, the locking part 312 is arranged on the sliding part 33, the locking part 312 moves along the limited direction of the guiding part 32 along with the sliding part 33, the sliding part 33 and the guiding part 32 move to the locking position through the locking part 312 on the sliding part 33 to form a locking structure, the unlocking part 311 is arranged at the locking position, and the unlocking part 311 pushes the locking part 312 away from the locking position; the elastic body 34 is arranged between the guide portion 32 and the sliding portion 33, the sliding portion 33 is driven, so that the elastic body 34 between the guide portion and the sliding portion stores kinetic energy required when the door body opens the door body through deformation, and the locking portion 312 is separated from the locking position under the pushing of the unlocking portion 311, so that the sliding portion 33 and the guide portion 32 are unlocked, and the kinetic energy is released through the restoration of the elastic body 34.

The push rod 11 is positioned below the first transmission gear 21; the pushing mechanism 1 further comprises a bearing plate 12, the bearing plate 12 is provided with a push rod 11, a transmission mechanism 2 and a mounting position of the loading mechanism 3, the bearing plate 12 is provided with a connecting portion 121 and a buckle 122, the buckle 122 is arranged on two sides of the push rod 11, the push rod 11 is limited by the buckle 122 in the sliding direction, the connecting portion 121 is of an annular structure, and the loading mechanism 3 is arranged in the connecting portion 121 to limit the position of the loading mechanism 3.

Because the first transmission gear 21 and the second transmission gear 22 are concentrically arranged, the first transmission gear 21 and the second transmission gear 22 form a structure which is arranged up and down, the push rod 11 and the sliding part 33 are arranged in a staggered manner according to the arrangement mode of the first transmission gear 21 and the second transmission gear 22, the buckles 122 are arranged on two sides of the bearing plate 12, and the buckles 122 are positioned below the large gear 21, so that the width reduction of the whole automatic door opening device is reduced.

In a preferred embodiment, one side of the guiding portion 32 extends outward to form a sliding rail 322, the sliding portion 33 is slidably connected to the sliding rail 322, and the locking assembly 31 is disposed at the moving terminal end of the sliding portion 33;

the push rod 11 drives the sliding portion 33 to move toward the locking assembly 31, so that the elastic body 34 is elastically stretched, and the elastic body 34 is limited to recover by the connection of the locking assembly 31 and the sliding portion 33.

The locking assembly 31 comprises an unlocking part 311 and a locking part 312, the locking part 312 is arranged on the sliding part 33, and a locking position is arranged at the moving terminal end of the sliding rail 322;

the slide portion 33 and the guide portion 32 are moved to the lock position by the lock portion 312 on the slide portion 33 to form a lock structure, and the unlocking portion 311 pushes the lock portion 312 away from the lock position.

Furthermore, the guide portion 32 is provided with a sliding slot 321 extending along the moving direction of the sliding portion 33, and the locking position is located at the end of the sliding slot 321; the locking portion 312 is slidably connected in the sliding slot 321, so that the locking portion 312 slides along the track defined by the sliding slot 321, and when the locking portion 312 moves to the locking position at the end of the sliding slot 321, the locking portion 312 is limited in the locking position.

Specifically, the sliding groove 321 includes a first guide hole 3211 and a second guide hole 3212 extending from one end of the first guide hole 3211 as a locking position;

the second guide hole 3212 extends in a direction inclined with respect to the first guide hole 3211 such that the second guide hole 3212 extends toward the unlocking portion 311, and the first guide hole 3211 and the second guide hole 3212 form an L-shaped sliding groove 321;

an elastic part is arranged between the locking part 312 and one base surface of the guide part 32, the locking part 312 is pushed to move into the second guide hole 3212 by the elastic force of the elastic part, when the locking part 312 slides in the first guide hole 3211, the elastic part is in a compressed state, when the locking part 312 moves to the connecting end part of the second guide hole 3212 and the first guide hole 3211, the elastic part rebounds to push the locking part 312 into the second guide hole 3212, because the locking part 312 is pushed into the second guide hole 3212 to cross the inflection point of the L-shaped chute 321, under the action of the pulling force of the elastic body 34 on the locking part 312, the locking part 312 extrudes the inner side wall of the second guide hole 3212, so that the locking part 312 is difficult to return to the first guide hole 3211.

The sliding part 33 is provided with a guide groove 331, and the locking part 312 is sleeved in the guide groove 331;

the guide groove 331 extends toward the unlocking portion 311, and in a preferred embodiment, the guide groove 331 extends toward the second guide hole 3212, and the locking portion 312 moves relative to the sliding portion 33 along the extending direction of the guide groove 331 while the locking portion 312 moves along with the sliding portion 33.

Specifically, the unlocking portion 311 is provided at one side of the guide portion 32, and the extending direction of the first guide hole 3211 is parallel to the moving direction of the sliding portion 33.

It should be noted that the specific structure of the locking assembly 31 is not limited to the implementation of the unlocking portion 311 and the locking portion 312, and common locking structures, such as locking structures of a lock head and a lock tongue, and an electromagnet locking structure, and a stop lever structure extending into the sliding portion 33 to limit movement, can be implemented to lock the guide portion 32 and the sliding portion 33 to form a limiting structure, and therefore, it should be regarded as other specific embodiments of the present disclosure.

Meanwhile, in the locking manner of the unlocking portion 311 and the locking portion 312 adopted in the above-mentioned embodiment, the locking process is mainly realized by a mechanical structure, and the unlocking process is realized by simply pushing, so that the control logic is reduced, and the whole working process is more stable, meanwhile, the locking portion 312 is used as a pressure-bearing member, and the locking portion 312 bears most of the shearing force, and the locking portion 312 is used as a detachable structure, so that the maintenance and the replacement are convenient.

In a preferred embodiment, the guiding portion 32 extends along a straight line to form a sliding rail 322, and the bottom of the sliding portion 33 is provided with a limiting groove 336 penetrating through two end faces thereof; the slide rail 322 is coupled to the limiting groove 336, so that the sliding portion 33 is slidably coupled to the slide rail 322, and the sliding portion 33 is driven to slide along the extending direction of the slide rail 322 by an external force, so that the elastic body 34 is deformed.

In a preferred embodiment, the sliding rail further comprises a base 35, the guide part 32 is placed on the base 35, a projection 351 is arranged on the base 35, and the projection 351 is located on two sides of the sliding rail 322; both sides of the sliding portion 33 are extended outwardly to form a skirt 333 which interferes with the projection 351.

Specifically, the skirt 333 is provided with an installation opening 334, one end of the elastic body 34 is fixedly installed at the installation opening 334, and the other end of the elastic body 34 is connected to the guide portion 32, so that the elastic body 34 is located on two sides of the slide rail 322, the acting force of the elastic body 34 on the sliding portion 33 is more stable, and the force is stable during recovery, so that the movement is stable, and meanwhile, the rated kinetic energy required by deformation of the elastic body 34 on one side is reduced by applying force to two sides.

In a preferred embodiment, the elastic body 34 is a tension spring, the elastic body stores kinetic energy by tensile deformation, the unlocking part 311 is arranged at one end of the slide rail 322 far away from the guide part 32, the end of the sliding part 33 near the guide part 32 is provided with a buffer block 335, the sliding part 33 moves towards the guide part 32 during the recovery process, and the buffer block 335 is arranged at one end of the sliding part 33 near the guide part 32 to absorb the impact force in order to reduce the damage caused by the impact.

Specifically, a positioning block 332 is mounted on the other side of the sliding portion 33, on which the buffer block 335 is mounted, when the tension spring is pulled, a positioning opening 1211 is provided on the connecting portion 121, the positioning block 332 extends into the positioning opening 1211, and positioning reinforcing ribs are circumferentially arranged on the positioning block 332 and abut against the inner wall of the positioning opening 1211, so that the position accuracy of the sliding portion 33 is ensured.

It should be understood that the above-described embodiments are only illustrative of portions of the present application and are not intended to limit the scope of the present application.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

Claims

1. An automatic door opener for two household electrical appliances that open door, its characterized in that includes:

the pushing mechanism comprises two push rods for pushing the door body;

the loading mechanism comprises an energy storage assembly for storing kinetic energy for pushing the push rod;

2. The automatic door opener of claim 1, wherein the push rod is disposed at both sides of the loading mechanism.

3. The automatic door opener according to claim 2, wherein the loading mechanism comprises an elastic body, a sliding portion and a locking assembly, the sliding portion and the elastic body constitute the energy storage assembly;

the transmission mechanism drives the sliding part to form a locking mechanism with the locking assembly, so that the elastic body is deformed to be in a stretching or compressing state, and kinetic energy is stored.

4. The automatic door opener according to claim 3, wherein the transmission mechanism is driven with the sliding portion and the push rod through a rack and pinion;

the number of the transmission mechanisms is two, the two transmission mechanisms are arranged on two sides of the sliding part, the first transmission gears are meshed with the racks, and the secondary transmission assembly is in matched transmission with the push rod.

5. The automatic door opener according to any one of claims 1 to 4, wherein the unidirectional transmission assembly is unidirectional-transmitted through a ratchet and a pawl.

6. The automatic door opener of claim 5, wherein said primary drive assembly is a first drive gear and said secondary drive assembly is a second drive gear;

the ratchet wheel is integrally formed on the first transmission gear, the second transmission gear comprises a boss, and the stopping claw is installed on the boss, so that the stopping claw extends into a ratchet groove of the ratchet wheel.

7. The automatic door opener according to claim 6, wherein the first transmission gear is disposed concentrically with the second transmission gear;

8. The automatic door opener according to claim 3, wherein said loading mechanism further comprises a guide portion, a base of said guide portion extending outwardly to form a slide rail, said slide portion sliding in a direction defined by said slide rail, and said elastic body being attached to a base surface of said slide portion and said guide portion.

9. The automatic door opening device according to claim 8, wherein the locking assembly includes an unlocking part and a locking block, the locking block is provided at the sliding part, and a locking position is provided at a moving terminal end of the sliding rail;

the sliding part and the guide part are moved to the locking position through a locking block on the sliding part to form a locking structure, and the unlocking part pushes the locking block away from the locking position.

10. The automatic door opener according to claim 9, wherein the slide rail is provided with a slide groove extending in a moving direction of the slide portion, and the lock position is formed at a tip end of the slide groove;

the locking block is slidably connected in the sliding groove, so that the locking block slides along a track limited by the sliding groove.