CN113958225A

CN113958225A - Driving device and air conditioner with same

Info

Publication number: CN113958225A
Application number: CN202111188806.4A
Authority: CN
Inventors: 苏田; 毛先友; 张滔; 丁鹏垒
Original assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-01-21

Abstract

The invention discloses a driving device and an air conditioner with the same. The driving device includes: the power assembly comprises an extension shaft part, the extension shaft part is used for driving a middle ratchet wheel to synchronously rotate, the middle ratchet wheel can slide along the axial direction of the extension shaft part, the middle ratchet wheel is provided with a plurality of middle gear teeth, the middle gear teeth comprise a middle guide section and a middle stopping section, the driving wheel comprises a ratchet part and a driving rotating wheel part, when the middle ratchet wheel rotates forwards, the middle stopping section drives the ratchet part to rotate forwards, when the middle ratchet wheel rotates backwards, the middle guide section drives the ratchet part to rotate backwards, the elastic reset piece enables the middle ratchet wheel to be tightly pressed and engaged with the ratchet part when the driving wheel is not locked, and when the middle ratchet wheel drives the ratchet part to rotate backwards and the driving wheel is locked, the middle ratchet wheel slides along the axial direction of the extension shaft part and is engaged and slips with the ratchet part. The driving device has the locked-rotor protection function and is compact in structure.

Description

Driving device and air conditioner with same

Technical Field

The invention relates to the technical field of air conditioners, in particular to a driving device and an air conditioner with the same.

Background

Some air conditioners in the related art are provided with a liftable lifting door, and a lifting door driving device is used for driving the lifting door to move up and down, but the existing lifting door driving device has the defects of large structure, poor reliability, high cost and the like, even does not have a descending locked-rotor protection function, and is easy to cause mechanical injury to a human body.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the invention provides a driving device which has a locked-rotor protection function and is compact in structure.

The invention also provides an air conditioner with the driving device.

The driving device according to the embodiment of the invention comprises: a power assembly including an extended shaft portion; an intermediate ratchet for driving the intermediate ratchet to rotate synchronously, and the intermediate ratchet is capable of sliding axially along the extension shaft, the intermediate ratchet having a plurality of intermediate gear teeth, the intermediate gear teeth including: the length of the middle retaining section is smaller than that of the middle guide section; a drive wheel, the drive wheel comprising: the ratchet wheel part is arranged on one side, facing the middle ratchet wheel, of the driving wheel part, the middle backstop section drives the ratchet wheel part to rotate forwards when the middle ratchet wheel rotates forwards, and the middle guide section drives the ratchet wheel part to rotate backwards when the middle ratchet wheel rotates backwards; the elasticity piece that resets, the elasticity piece that resets is located one side of middle ratchet, and be configured to make when the non-lock of drive wheel changes, middle ratchet with ratchet portion compresses tightly the interlock, and middle ratchet drive ratchet portion reversal just when the drive wheel changes stifledly, make middle ratchet is followed extend the axial of axial part slide and with ratchet portion interlock skids.

According to the driving device provided by the embodiment of the invention, when the driving wheel is not locked, the middle ratchet wheel and the ratchet wheel part can be pressed and meshed, and when the middle ratchet wheel drives the ratchet wheel part to rotate reversely and the driving wheel is locked, the middle ratchet wheel slides along the axial direction of the extension shaft part and is meshed and slipped with the ratchet wheel part, so that the driving device provided by the invention has a locked-rotation protection function and a compact structure.

According to some embodiments of the invention, the extension shaft portion and the intermediate ratchet wheel transmit torque through a non-circular face fit.

According to some embodiments of the invention, the ratchet portion has a plurality of ratchet portion teeth protruding along an axis of the driving wheel toward the intermediate ratchet wheel, the plurality of intermediate teeth protruding along the axis of the intermediate ratchet wheel toward the driving wheel, the ratchet portion teeth are in tooth shape in conformity with the intermediate wheel teeth, and the ratchet portion teeth include a drive guide section and a drive backstop section, the drive backstop section being driven by the intermediate backstop section when the intermediate ratchet wheel is rotated in the forward direction, and the drive guide section being driven by the intermediate guide section when the intermediate ratchet wheel is rotated in the reverse direction.

Optionally, the positive normal direction of the middle backstop section is perpendicular to the axis of the middle ratchet wheel; or the positive direction of the normal of the middle backstop section points to the middle ratchet wheel.

According to some embodiments of the invention, the power assembly comprises: the power device is used for driving the driving wheel to rotate forwards or reversely, and the driving wheel comprises: drive runner portion, it links to each other to extend the fixed phase of axial region drive runner portion's orientation one side of middle ratchet, elasticity resets and is the cylindrical spring, the cylindrical spring cover is located extend the axial region outer and end and support middle ratchet with between the drive runner portion.

Optionally, the driving wheels and the intermediate ratchet wheels are all multiple, the axes of the multiple intermediate ratchet wheels are arranged in parallel, and each intermediate ratchet wheel is located on the same axis with the corresponding driving wheel and the corresponding driving wheel.

Further, the power assembly further comprises: the output shaft of the power device is in transmission connection with the main transition gear, the auxiliary transition gear is in meshing transmission with the main transition gear, and the auxiliary transition gear and the main transition gear are suitable for being meshed with different driving wheels.

According to some embodiments of the invention, the drive device further comprises: the box subassembly, the box subassembly includes the gear box, the gear box includes gear box body and gear box lid, the gear box body with form the gear train installation space between the gear box lid, main transition gear vice transition gear the drive wheel is installed in the gear train installation space, be provided with the confession on the gear box body the first perforation that power device's output shaft penetrated, be provided with the confession on the gear box lid extend the second perforation that the axial region was worn out.

Further, the cartridge assembly further comprises: the wheel cover is arranged on the driving wheel and connected with the gear box, and the driving wheel is directly or indirectly rotatably supported on the wheel cover; the driving cover is arranged on the power device and connected with the gear box, and the power device is directly or indirectly supported on the driving cover.

Optionally, a damping member is disposed between the power device and the driving cover, and a damping member is disposed between the power device and the gear box.

An air conditioner according to another aspect of the present invention includes: host computer, overhead door and foretell drive arrangement, the overhead door is relative host computer liftable motion, drive arrangement install in the host computer, and through the drive wheel with the overhead door cooperation is in order to drive the overhead door is relative host computer elevating motion, drive arrangement is configured as through middle ratchet corotation drive the overhead door rises, through middle ratchet corotation drive the overhead door descends.

Optionally, the driving wheel is a gear, a rack is arranged on the lifting door, and the gear is meshed with the rack.

The advantages of the air conditioner and the driving device are the same compared with the prior art, and are not described herein again.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a perspective view of a drive device according to one embodiment of the present invention;

FIG. 2 is an exploded view of the drive device and rack shown in FIG. 1;

FIG. 3 is an exploded view of the drive shown in FIG. 1 at another angle to the rack;

FIG. 4 is an exploded view of the drive wheel, intermediate ratchet, resilient return member, drive gear, etc.;

fig. 5 is a perspective view of an air conditioner according to an embodiment of the present invention;

fig. 6 is a state diagram after the lift gate is raised in the air conditioner shown in fig. 5;

fig. 7 is a state diagram of the air conditioner shown in fig. 6 after the mobile handset is taken out;

fig. 8 is an exploded view of the air conditioner shown in fig. 6;

FIG. 9 is an assembly view of the lift gate (raised state), rack and drive arrangement shown in FIG. 8;

FIG. 10 is a front view of the lift gate, rack and drive arrangement shown in FIG. 9;

FIG. 11 is a sectional view taken along line A-A of FIG. 10;

FIG. 12 is an enlarged partial view of FIG. 11 at B;

FIG. 13 is an assembly view of the rack and drive arrangement shown in FIG. 9;

FIG. 14 is an assembly view of the lift gate (lowered state), rack and drive arrangement shown in FIG. 8;

FIG. 15 is a front view of the lift gate, rack and drive arrangement shown in FIG. 14;

FIG. 16 is a cross-sectional view taken along line C-C of FIG. 15;

fig. 17 is a partially enlarged schematic view at D in fig. 16;

FIG. 18 is an assembly view of the rack and drive arrangement shown in FIG. 14;

fig. 19 is a partially enlarged schematic view at G in fig. 18;

FIG. 20 is a schematic view of the intermediate gear teeth shown in FIG. 19.

Reference numerals:

a drive device 100;

the driving wheel 1, the first driving wheel 11, the second driving wheel 12, the ratchet wheel part 13, the ratchet wheel gear 131, the driving guide section 1311, the driving backstop section 1312 and the driving wheel part 14;

the device comprises a power device 21, a transmission wheel 22, a first transmission wheel 221, a second transmission wheel 222, an extension shaft part 23, a transmission wheel part 24, a main transition gear 25, an auxiliary transition gear 26, a motor shaft sleeve 27 and a pin shaft 28;

the middle ratchet wheel 3, the first middle ratchet wheel 31, the second middle ratchet wheel 32, the middle gear teeth 33, the middle guide section 331 and the middle backstop section 332;

an elastic return piece 4, a spring retainer ring 41;

the gear box comprises a gear box body 5, a gear box body 51, a first through hole 511, a gear box cover 52, a second through hole 521, a driving cover 6, a wheel cover 7, a first wheel cover 71, a second wheel cover 72, a bearing seat 8, a first bearing 81, a second bearing 82 and a third bearing 83;

the damper 9, the first damper 91, and the second damper 92;

an air conditioner 1000, a main unit 200, a storage space 201, a lifting door 300, a mobile sub-unit 400, and a rack 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The driving device 100 according to an embodiment of the first aspect of the present invention is described in detail below with reference to fig. 1 to 20.

Referring to fig. 1 to 3, a driving apparatus 100 according to an embodiment of the present invention may include: power assembly, middle ratchet 3, drive wheel 1 and elasticity piece 4 that resets.

Wherein the power assembly is used for providing driving force for the driving device 100. The power assembly may comprise an extension shaft portion 23, as shown with reference to fig. 2-4, the axial ends of the extension shaft portion 23 being a head end and a root end, respectively, and the direction from the head end to the root end being defined as a first direction F1, and the opposite direction, i.e. the direction from the root end to the head end being defined as a second direction F2.

The extension shaft portion 23 is used for driving the intermediate ratchet 3 to rotate synchronously. In the specific embodiment, the center of the intermediate ratchet 3 is provided with a center hole, so that the extension shaft part 23 is inserted into the center hole of the intermediate ratchet 3, and the extension shaft part 23 drives the intermediate ratchet 3 to rotate synchronously when rotating. The length of the extension shaft part 23 is larger than the thickness of the middle ratchet wheel 3, thereby enabling the middle ratchet wheel 3 to slide along the axial direction of the extension shaft part 23, and in addition, the extension shaft part 23 can play a guiding role for the sliding of the middle ratchet wheel 3, thereby improving the movement stability of the middle ratchet wheel 3.

Referring to fig. 13, 18-20, the intermediate ratchet 3 has a plurality of intermediate teeth 33, each intermediate tooth 33 comprising: an intermediate guide section 331 and an intermediate backstop section 332, the length of the intermediate backstop section 332 being less than the length of the intermediate guide section 331.

The drive wheel 1 may include: the ratchet portion 13 and the driving wheel portion 14, the ratchet portion 13 is fixedly connected with the driving wheel portion 14, and the driving wheel portion 14 is used for driving other parts (such as the rack 500) to move. The ratchet portion 13 is provided on the side of the drive pulley portion 14 facing the intermediate ratchet 3, that is, the ratchet portion 13 is located between the drive pulley portion 14 and the intermediate ratchet 3. In other words, the drive wheel portion 14, the ratchet portion 13, and the intermediate ratchet 3 are arranged in order in the direction from the head end to the root end of the extension shaft portion 23 (the first direction F1 shown in fig. 2 to 4) in the axial direction of the extension shaft portion 23, and the surfaces of the ratchet portion 13 and the intermediate ratchet 3 that are opposite to each other in the axial direction of the extension shaft portion 23 are adapted to be engaged. When the ratchet part 13 engages with the intermediate ratchet 3, the ratchet part 13 is relatively stationary with the intermediate ratchet 3 to stop or rotate synchronously together.

Referring to fig. 13, 18-19, in the axial direction of extension shaft portion 23, intermediate ratchet 3 has intermediate gear teeth 33 on a side facing intermediate ratchet 3, and ratchet portion 13 has a plurality of ratchet portion gear teeth 131 on a side facing intermediate ratchet 3, ratchet portion gear teeth 131 being adapted to engage intermediate gear teeth 33, and when ratchet portion gear teeth 131 engage intermediate gear teeth 33, ratchet portion 13 is relatively stationary with intermediate ratchet 3 to stop or rotate together in synchronism. Since the ratchet portion 13 is fixedly connected to the driving pulley portion 14, the ratchet portion 13 and the driving pulley portion 14 can be stopped or rotated in synchronization together. Therefore, if the extension shaft 23 drives the middle ratchet 3 to rotate and the ratchet part 13 is pressed and engaged with the middle ratchet 3, the middle ratchet 3 can drive the ratchet part 13 to rotate synchronously, the ratchet part 13 can drive the driving pulley part 14 to rotate synchronously, and when the driving pulley part 14 is limited to stop rotating (i.e. locked rotating), the driving pulley part 14 can limit the ratchet part 13 to stop rotating.

When the intermediate ratchet 3 rotates forward, the intermediate retaining section 332 drives the ratchet portion 13 to rotate forward. When the intermediate stopping section 332 is used to push the ratchet portion 13 to rotate in the forward direction, even if the ratchet portion 13 is locked, the intermediate stopping section 332 and the ratchet portion 13 are not easy to slip, and the cooperation between the intermediate stopping section 332 and the ratchet portion 13 is more reliable. When the intermediate ratchet 3 rotates reversely, the ratchet portion 13 is driven to rotate reversely by the intermediate guide section 331. When the ratchet portion 13 is pushed to rotate reversely using the intermediate guide section 331, if the ratchet portion 13 is locked, the intermediate guide section 331 is easily separated from the ratchet portion 13.

It should be noted that the normal rotation and the reverse rotation refer to opposite rotation directions, but are not limited to specific rotation directions, and for example, for one intermediate ratchet 3, clockwise rotation is normal rotation and counterclockwise rotation is reverse rotation, but of course, counterclockwise rotation may be normal rotation and clockwise rotation may be reverse rotation.

In an exemplary embodiment, the driving device 100 may be used to drive the lift gate 300 to perform the ascending and descending operations. When the ratchet part 13 rotates forwards, the driving wheel 1 is used for driving the lifting door 300 to ascend; when the ratchet portion 13 rotates reversely, the driving wheel 1 drives the lift gate 300 to descend. Thus, when the driving wheel 1 is locked during the lowering of the lift gate 300, the intermediate guide section 331 of the intermediate ratchet 3 may be separated from the ratchet part 13 to slip the intermediate ratchet 3 from the driving wheel 1.

The elastic restoring member 4 is provided at one side of the intermediate ratchet 3, and the elastic restoring member 4 is adapted to apply an elastic force toward the driving wheel 1 to the intermediate ratchet 3. In other words, the elastic restoring member 4 applies an elastic force to the intermediate ratchet 3, which causes the intermediate ratchet 3 to engage with the ratchet part 13 of the driving wheel 1, i.e., the direction of the elastic force is the second direction F2. The elastic restoring member 4 is configured to press and engage the intermediate ratchet 3 with the ratchet portion 13 when the driving wheel 1 is not locked, and to slide the intermediate ratchet 3 in the axial direction of the extension shaft portion 23 and engage and slip the intermediate ratchet 3 with the ratchet portion 13 when the intermediate ratchet 3 drives the ratchet portion 13 to rotate reversely and the driving wheel 1 is locked (simply referred to as a reverse locked state). Specifically, the intermediate ratchet 3 slides in the first direction F1 as shown in fig. 2 to 4 along the axis of the extension shaft portion 23. More specifically, when the intermediate ratchet 3 drives the ratchet portion 13 to rotate reversely and the driving wheel 1 is locked, the intermediate ratchet 3 moves in the axial direction of the extension shaft portion 23 in the first direction F1 as shown in fig. 2 to 4 to compress the elastic restoring member 4, so that the engagement of the intermediate ratchet 3 with the ratchet portion 13 slips; after the locked rotation of the driving wheel 1 is released, the intermediate ratchet 3 is moved in the axial direction of the extending shaft portion 23 in the second direction F2 shown in fig. 2 to 4 by the elastic restoring member 4 due to the restoration to the non-locked rotation state, so that the intermediate ratchet 3 is restored to the pressing engagement with the ratchet portion 13.

Therefore, when the driving wheel 1 is in a non-locked rotation state, the rotation of the driving wheel 1 is not limited, and the intermediate ratchet 3 and the ratchet part 13 are kept pressed and engaged under the action of the elastic resetting piece 4, as shown in fig. 13; when the driving wheel 1 is in the reverse rotation locked state, the reverse rotation of the driving wheel 1 is limited, and the intermediate ratchet wheel 3 is engaged with the ratchet wheel part 13 to slip, as shown in fig. 18-19; when the driving wheel 1 is in the locked-rotor releasing state, the rotation of the driving wheel 1 is not limited, and the intermediate ratchet wheel 3 and the ratchet wheel part 13 are restored to be pressed and meshed under the action of the elastic restoring piece 4.

The following describes in detail the operation of "when the drive wheel 1 is in the reverse rotation locked state, the reverse rotation of the drive wheel 1 is restricted, and the intermediate ratchet 3 engages and slips with the ratchet portion 13".

Specifically, when the extension shaft portion 23 rotates reversely to drive the intermediate ratchet 3 to rotate reversely, the ratchet portion 13 of the driving wheel 1 engages with the intermediate ratchet 3, so that the driving wheel 1 rotates reversely along the intermediate ratchet 3, and if the driving wheel 1 is limited in reverse rotation due to external force during the process of the driving wheel 1 rotating reversely, i.e. the driving wheel 1 is limited, and cannot rotate reversely continuously (i.e. the driving wheel 1 is in reverse rotation blocking), the intermediate ratchet 3 keeps rotating reversely, and the intermediate ratchet 3 slides in the first direction F1 shown in fig. 2 to 4 along the axial direction of the extension shaft portion 23, so that the intermediate ratchet 3 engages with the ratchet portion 13 to slip, thereby preventing the driving wheel 1 from being damaged, and therefore the driving wheel 1 has a blocking protection function.

According to the driving device 100 of the embodiment of the invention, when the driving wheel 1 is not locked, the middle ratchet wheel 3 is pressed and engaged with the ratchet wheel part 13, and when the middle ratchet wheel 3 drives the ratchet wheel part 13 to rotate reversely and the driving wheel 1 is locked, the middle ratchet wheel 3 slides along the axial direction of the extension shaft part 23 and is engaged and slipped with the ratchet wheel part 13, so that the driving device 100 of the invention has the locked rotation protection function, and has simple structure and compact arrangement.

For a more clear description, the following description will be made by taking the above-described driving device 100 as an example for the air conditioner 1000.

Referring to fig. 13 to 17, the air conditioner 1000 includes a main unit 200 and a lifting door 300, wherein the lifting door 300 is movably disposed on the main unit 200, wherein the lifting door 300 can be used to open and close a setting area on the main unit 200, for example, an air outlet area is disposed on the main unit 200, and the lifting door 300 can be used to open and close the air outlet area; for another example, the main unit 200 may have a storage space 201, the lift gate 300 may be used to open and close the storage space 201, and the storage space 201 may be used to store devices such as the mobile handset 400, so that the mobile handset 400 can be taken out from the storage space 201 when the lift gate 300 opens the storage space 201, and so on, and the functions of the lift gate 300 will not be described in detail herein.

The driving device 100 is installed on the main body 200 and cooperates with the lifting door 300 through the driving wheel 1 to drive the lifting door 300 to move relative to the main body 200. In other words, the driving device 100 may be used to drive the lift gate 300 to perform the ascending and descending operations. Wherein, the driving wheel 1 is a gear, the lifting door 300 is provided with a rack 500, and the gear is meshed with the rack 500 to drive the lifting door 300 to move up and down relative to the host 200. The driving device 100 is configured such that the lift gate 300 is driven to ascend by the forward rotation of the driving wheel 1 and the lift gate 300 is driven to descend by the reverse rotation of the driving wheel 1.

When the driving device 100 is used, as shown in fig. 13, in a non-locked state, the intermediate ratchet 3 and the ratchet part 13 of the driving wheel 1 are kept pressed and engaged under the action of the elastic restoring member 4, and since the driving wheel part 14 of the driving wheel 1 is meshed with the rack 500, when the intermediate ratchet 3 rotates forward, the driving wheel 1 is driven to rotate forward, and the driving wheel 1 drives the rack 500 to ascend, so that the ascending of the lifting door 300 is realized; when the middle ratchet wheel 3 rotates reversely, the driving wheel 1 is driven to rotate reversely, the driving wheel 1 drives the rack 500 to descend, and the descending of the lifting door 300 is realized.

During the descending process of the lifting door 300, if the lifting door 300 is interfered by an obstacle, for example, a person puts a hand under the lifting door 300 to hinder the downward movement of the lifting door 300, at this time, the lifting door 300 whose descending is limited will limit the rotation of the driving wheel 1 to stop the rotation of the driving wheel 1, the driving wheel 1 will assume a reverse rotation-blocked state, and the intermediate ratchet wheel 3 will move along the axial direction of the extension shaft part 23 in the first direction F1 as shown in fig. 2-4 to compress the elastic restoring member 4, so that the intermediate ratchet wheel 3 will engage and slip with the ratchet part 13 of the driving wheel 1, as shown in fig. 18-19.

Under the locked-rotor state through the design, middle ratchet 3 and the ratchet portion 13 interlock of drive wheel 1 are slipped to make overhead door 300 can no longer continue to descend by drive arrangement 100's effect, on the one hand form the protection to drive arrangement 100, if avoid burning out power component, twist off power component's transmission shaft scheduling problem, on the other hand forms the protection to the obstacle, if avoid tong scheduling problem, use security is good, and drive arrangement 100 is not fragile, long service life.

Further, when the interfering object is removed, the locked rotation of the driving wheel 1 is released, and at this time, the elastic reset piece 4 makes the intermediate ratchet 3 and the ratchet part 13 restore the pressing and meshing state. In this state, when the intermediate ratchet 3 rotates forward, the driving wheel 1 is driven to rotate forward, and the driving wheel 1 drives the rack 500 to ascend, so that the ascending of the lifting door 300 is realized; when the middle ratchet wheel 3 rotates reversely, the driving wheel 1 is driven to rotate reversely, the driving wheel 1 drives the rack 500 to descend, and the descending of the lifting door 300 is realized.

In some embodiments of the present invention, as shown in fig. 4, the extending shaft portion 23 and the intermediate ratchet 3 are matched to transmit torque through a non-circular surface, so that not only the matching between the extending shaft portion 23 and the intermediate ratchet 3 can be used to perform a guiding function, but also the matching between the extending shaft portion 23 and the intermediate ratchet 3 can be used to perform a torque transmitting function, so that the extending shaft portion 23 can drive the intermediate ratchet 3 to rotate synchronously without introducing other torque connecting pieces, thereby simplifying components and cost, on the one hand, avoiding interference caused by the introduced other torque connecting pieces to axial movement of the intermediate ratchet 3 relative to the extending shaft portion 23, and ensuring that the driving device 100 can engage and slip under a locked-rotor condition. Therefore, the design is very ingenious, and the structure is compact.

In some embodiments, the extension shaft portion 23 is an anti-rotation shaft, and the intermediate ratchet 3 has an anti-rotation center hole matching the anti-rotation shaft. For example, the extension shaft portion 23 is a hexagonal rotation preventing shaft, and the intermediate ratchet 3 has a hexagonal center hole. Of course, the invention is not limited thereto, and in other embodiments of the invention, the extension shaft portion 23 may be another type of anti-rotation shaft, and the central hole of the middle ratchet 3 matches with the extension shaft portion 23, which is not described herein. Of course, the present invention is not limited to this, for example, in other embodiments of the present invention, a shaft hole may be provided in the extension shaft portion 23, and the intermediate ratchet 3 may be provided with a shaft pin inserted into the shaft hole, etc., so as to achieve guiding engagement, which will not be described herein.

In some embodiments of the present invention, ratchet portion 13 has a plurality of ratchet portion teeth 131, the plurality of ratchet portion teeth 131 being spaced apart along a circumference of drive wheel 1, and ratchet portion teeth 131 extending along an axis of drive wheel 1 toward intermediate ratchet wheel 3, a plurality of intermediate teeth 33 being spaced apart along a circumference of intermediate ratchet wheel 3, and intermediate teeth 33 extending along an axis of intermediate ratchet wheel 3 toward drive wheel 1, ratchet portion teeth 131 being shaped and equal in number to intermediate teeth 33, a first meshing tooth slot being formed between two adjacent ratchet portion teeth 131, intermediate teeth 33 being adapted to mesh with the first meshing tooth slot, a second meshing tooth slot being formed between two adjacent intermediate teeth 33, ratchet portion teeth 131 being adapted to mesh with the second meshing tooth slot. Therefore, the meshing requirement of the ratchet part 13 and the middle ratchet 3 can be met, the meshing stability is better, and the transmission reliability is higher.

Optionally, ratchet wheel teeth 131 and intermediate teeth 33 are each at least three in number.

Referring to fig. 13 and 19, ratchet gear teeth 131 may include a drive guide segment 1311 and a drive stop segment 1312, the drive guide segment 1311 and the drive stop segment 1312 being coupled to each other, and the drive stop segment 1312 having a length less than that of the drive guide segment 1311. When the intermediate ratchet 3 rotates forward, the intermediate retaining section 332 drives and drives the retaining section 1312, and when the intermediate ratchet 3 rotates backward, the intermediate guide section 331 drives and drives the guide section 1311. When the intermediate stopping section 332 is used to push the driving stopping section 1312 to rotate, even if the ratchet portion 13 is locked, the intermediate stopping section 332 and the driving stopping section 1312 are not easy to slip, and the matching is more reliable. When the driving guide section 1311 is pushed to rotate using the intermediate guide section 331, if the ratchet portion 13 is locked, the intermediate guide section 331 will be easily separated from the driving guide section 1311.

In some alternative embodiments, as shown in fig. 13, 18-20, the positive normal direction L2 of the intermediate backstop segment 332 is perpendicular to the axis L1 of the intermediate ratchet 3. Thus, the normal direction of the contact surface between the intermediate stopping section 332 and the drive stopping section 1312 is perpendicular to the axis L1 of the intermediate ratchet 3, so that when the intermediate stopping section 332 pushes the drive stopping section 1312 to rotate, the intermediate stopping section 332 and the drive stopping section 1312 are prevented from slipping even if the ratchet portion 13 is locked.

In other alternative embodiments, referring to fig. 13, 18-20, the positive normal direction L2 of the intermediate anti-backup section 332 is directed to the intermediate ratchet 3, so that the contact surface between the intermediate anti-backup section 332 and the drive anti-backup section 1312 is directed to the intermediate ratchet 3, thereby ensuring that the intermediate anti-backup section 332 and the drive anti-backup section 1312 are not easy to slip even if the ratchet 13 is locked when the intermediate anti-backup section 332 pushes the drive anti-backup section 1312 to rotate.

In some embodiments of the invention, the power assembly comprises: a power device 21 and a transmission wheel 22, wherein the power device 21 is used for driving the transmission wheel 22 to rotate forwards or backwards, and the transmission wheel 22 comprises: the transmission rotor part 24, the transmission rotor part 24 and the extension shaft part 23 are fixedly connected, and the extension shaft part 23 is located on one side of the transmission rotor part 24 facing the middle ratchet wheel 3, in other words, along the axial direction of the extension shaft part 23, the extension shaft part 23 and the transmission rotor part 24 are arranged in sequence along the direction from the head end to the root end of the extension shaft part 23 (as shown in the first direction F1 in fig. 2-4), and the middle ratchet wheel 3 can be installed on the extension shaft part 23.

Alternatively, the power device 21 may be an electric motor.

The elastic reset piece 4 is a cylindrical spring, which is sleeved outside the extension shaft part 23 and is stopped between the middle ratchet 3 and the transmission wheel part 24. From this, elasticity resets 4's simple structure, and the processing of being convenient for is obtained, and elasticity resets 4 assembly and positioning mode simple, and the working effect is reliable. Of course, the present invention is not limited to this, and the elastic restoring member 4 may be provided in other forms or types and matched with corresponding installation manners, for example, the elastic restoring member 4 may also be a cushion, a spring, an air bag, other types of springs, and the like, which will not be described herein.

One side of the elastic resetting member 4 facing the transmission rotor portion 24 may be provided with a spring retainer 41 to support the elastic resetting member 4, so that the elastic resetting member 4 is more easily elastically deformed, and the improvement of the stress of the elastic resetting member 4 is facilitated.

Optionally, the driving wheel 1, the driving wheel 22 and the intermediate ratchet 3 are all multiple, the axes of the multiple intermediate ratchet 3 are arranged in parallel, and each intermediate ratchet 3 and the corresponding driving wheel 1 and driving wheel 22 are located on the same axis.

In the embodiment shown in fig. 2-4, the drive wheel 1 comprises: first 11 and second 12 driving wheels, first 11 and second 12 driving wheels being spaced apart, the transmission wheel 22 comprising: a first transmission wheel 221 and a second transmission wheel 222, the intermediate ratchet 3 comprising: the first driving wheel 221, the first intermediate ratchet wheel 31 and the first driving wheel 11 are positioned on a first axis, the second driving wheel 222, the second intermediate ratchet wheel 32 and the second driving wheel 12 are positioned on a second axis, and the first axis is parallel to the second axis.

Further, the first driving wheel 221, the first intermediate ratchet wheel 31, the first driving wheel 11, the second driving wheel 222, the second intermediate ratchet wheel 32, and the second driving wheel 12 are symmetrically arranged. The lifting door 300 is provided with a rack 500, and the driving wheel 1 is adapted to drive the rack 500 to move. The first driving wheel 221, the first intermediate ratchet wheel 31 and the first driving wheel 11 are arranged on one side of the rack 500, and the first driving wheel 11 is in tooth engagement with the rack 500 on the side; the second transmission wheel 222, the second intermediate ratchet wheel 32 and the second driving wheel 12 are arranged on the other side of the rack 500, and the second driving wheel 12 is in tooth engagement with the rack 500 on the side. When the rack 500 needs to be lifted, the first transmission wheel 221, the first intermediate ratchet wheel 31 and the first driving wheel 11 rotate clockwise, and the second transmission wheel 222, the second intermediate ratchet wheel 32 and the second driving wheel 12 rotate anticlockwise; when the rack 500 needs to be lowered, the first transmission wheel 221, the first intermediate ratchet wheel 31 and the first driving wheel 11 rotate counterclockwise, and the second transmission wheel 222, the second intermediate ratchet wheel 32 and the second driving wheel 12 rotate clockwise. In this way, when the rack 500 is located between the first driving wheel 11 and the second driving wheel 12, it is ensured that the first driving wheel 11 and the second driving wheel 12 can simultaneously drive the rack 500 to ascend or descend, thereby realizing the ascending or descending of the lifting door 300.

In some embodiments not shown in the drawings, the first driving wheel 221, the first intermediate ratchet wheel 31, the first driving wheel 11 and the second driving wheel 222, the second intermediate ratchet wheel 32, and the second driving wheel 12 may also be all disposed on the same side of the rack 500, so that when the rack 500 needs to be raised, the first driving wheel 221, the first intermediate ratchet wheel 31, the first driving wheel 11 and the second driving wheel 222, the second intermediate ratchet wheel 32, and the second driving wheel 12 rotate counterclockwise; when the rack 500 needs to be lowered, the first driving wheel 221, the first intermediate ratchet wheel 31, the first driving wheel 11, the second driving wheel 222, the second intermediate ratchet wheel 32 and the second driving wheel 12 rotate clockwise.

It should be noted that the type of the driving wheel portion 14 of the driving wheel 1 is not limited, and may be a gear, a polygonal wheel, or the like, as long as the driving effect can be achieved, and is not limited herein.

Further, the power assembly may further include: the output shaft of the power device 21 is in transmission connection with the main transition gear 25, the power device 21 is a motor, a motor shaft sleeve 27 is arranged on the output shaft of the motor, the motor shaft sleeve 27 is sleeved with the main transition gear 25, and the main transition gear 25 and the motor shaft sleeve 27 are matched with each other through a non-circular surface to transmit torque, so that the transmission connection between the main transition gear and the motor shaft sleeve 27 can be simplified, and the reliability of the transmission connection is ensured. Alternatively, the motor shaft sleeve 27 is provided with a hexagonal rotation-preventing surface, the main transition gear 25 is provided with a hexagonal rotation-preventing hole, and the motor shaft sleeve 27 is inserted and matched in the hexagonal rotation-preventing hole of the main transition gear 25 to realize transmission assembly of the motor shaft sleeve 27 and the main transition gear. The secondary transition gear 26 is in meshing transmission with the primary transition gear 25, and the secondary transition gear 26 and the primary transition gear 25 are suitable for meshing with different transmission wheels 22. The first transmission wheel 221 is in meshing transmission with the main transition gear 25, and the second transmission wheel 222 is in meshing transmission with the auxiliary transition gear 26. The axes of the first transmission wheel 221, the second transmission wheel 222, the secondary transition gear 26 and the main transition gear 25 are parallel to each other. At this time, the sub-transition gear 26 performs a reversing function so that the rotation directions of the first transmission wheel 221 and the second transmission wheel 222 are opposite.

In some embodiments of the present invention, as shown with reference to fig. 2-3, the driving device 100 further comprises: the box subassembly, the box subassembly includes gear box 5, gear box 5 includes gear box body 51 and gear box cover 52, form the gear train installation space between gear box body 51 and the gear box cover 52, optionally, gear box body 51 and gear box cover 52 can utilize the fastener to realize dismantling the connection, inject the gear train installation space jointly between gear box body 51 and the gear box cover 52, main transition gear 25, vice transition gear 26, drive wheel 22 installs in the gear train installation space, be provided with the first perforation 511 that supplies power device 21's output shaft to penetrate on the gear box body 51, be provided with the second perforation 521 that supplies to extend axial region 23 and wear out on the gear box cover 52.

Referring to fig. 11-12 and 16-17, the secondary transition gear 26 may be installed in the gear box 5 through a pin 28, one end of the pin 28 is supported on the gear box body 51, the other end is supported on the gear box cover 52, and a first bearing 81 may be further disposed at a connection position of the secondary transition gear 26 and the pin 28, so that it may be ensured that the secondary transition gear 26 rotates more smoothly and has less rotation noise. The other end of the motor shaft sleeve 27 is supported by the gear box cover 52, and a first bearing 81 is arranged between the motor shaft sleeve 27 and the gear box cover 52 to ensure that the rotation of the motor shaft sleeve 27 is smoother and the rotation noise is smaller.

A first mounting protrusion and a second mounting protrusion are convexly arranged on the gear box body 51, the first driving wheel 221 is mounted on the first mounting protrusion, and a first bearing 81 is arranged between the first driving wheel 221 and the first mounting protrusion, so that the first driving wheel 221 can rotate more smoothly and the rotating noise is smaller; the second driving wheel 222 is mounted on the second mounting protrusion, and a first bearing 81 is disposed between the second driving wheel 222 and the second mounting protrusion, so as to ensure that the second driving wheel 222 rotates more smoothly and the rotation noise is less.

In alternative embodiments, the use of the first bearing 81 may be eliminated such that the first drive wheel 221 is directly rotationally engaged with the first mounting boss, the second drive wheel 222 is directly rotationally engaged with the second mounting boss, the secondary transition gear 26 is directly rotationally engaged with the pin 28, and the motor sleeve 27 is directly rotationally engaged with the gear box cover 52.

Further, the box subassembly can also include wheel lid 7, and wheel lid 7 covers and is established drive wheel 1 to protect drive wheel 1. The wheel cover 7 is connected with the gear box 5, for example, a bolt fastener can be used to penetrate through the mounting holes on the wheel cover 7 and the gear box 5, so as to realize the detachable connection of the wheel cover 7 and the gear box 5. The drive wheel 1 is directly or indirectly rotatably supported to the wheel cover 7. For example, at least one of the drive wheel 1 and the wheel cover 7 is a wear-resistant material, so that the drive wheel 1 can be directly rotatably supported to the wheel cover 7. For another example, a second bearing 82 may be provided between the drive wheel 1 and the wheel cover 7, so that the drive wheel 1 may be indirectly rotatably supported to the wheel cover 7 via the second bearing 82.

In some embodiments of the present invention, as shown in fig. 2-3, the wheel cover 7 includes a first wheel cover 71 and a second wheel cover 72, the first driving wheel 11 is directly or indirectly rotatably supported on the first wheel cover 71, and the second driving wheel 12 is directly or indirectly rotatably supported on the second wheel cover 72.

The box subassembly still includes: and the driving cover 6 covers the power device 21 so as to protect the power device 21. The driving cover 6 is connected with the gear box 5, for example, a bolt fastener can be used to penetrate through the mounting hole on the driving cover 6 and the gear box 5, so as to realize the detachable connection of the driving cover 6 and the gear box 5. The power unit 21 is directly or indirectly supported to the driving cover 6.

Alternatively, a damper 9 is provided between the power unit 21 and the drive cover 6, and the damper 9 is provided between the power unit 21 and the gear box 5. Therefore, the effects of vibration and noise reduction can be achieved, the working reliability and stability of the power device 21 are improved, and the service life of the power device 21 is prolonged. Specifically, the vibration damping member 9 may include a first vibration damping member 91 and a second vibration damping member 92, the first vibration damping member 91 is disposed between the power device 21 and the driving cover 6, and the second vibration damping member 92 is disposed between the power device 21 and the gear box 5, so that a vibration damping effect between the power device 21 and the driving cover 6 and between the power device 21 and the gear box 5 may be ensured, and the vibration damping member 9 is convenient to install.

The drive device 100 may further comprise a bearing seat 8, and the bearing seat 8 is fixedly connected with the wheel cover 7, for example, by a fastener. The bearing housing 8 is provided with a plurality of third bearings 83, for example four third bearings 83. The third bearing 83 is adapted to stop the lifting door 300 when the driving device 100 drives the lifting door 300 to lift, thereby making the movement of the driving device 100 relative to the lifting door 300 more smooth.

An air conditioner 1000 according to an embodiment of the second aspect of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 5 to 8, the air conditioner 1000 may include: the driving device 100 is the driving device 100 according to the first aspect of the present invention, the driving device 100 is mounted on the main body 200 and cooperates with the lifting door 300 through the driving wheels 1 to drive the lifting door 300 to move up and down relative to the main body 200, the driving device 100 is configured to drive the lifting door 300 to move up and down through the forward rotation of the intermediate ratchet 3, and drive the lifting door 300 to move down through the reverse rotation of the intermediate ratchet 3.

Therefore, according to the air conditioner 1000 of the embodiment of the present invention, by providing the driving device 100 according to the embodiment of the first aspect of the present invention, the lifting door 300 can have the function of protecting the rotation blockage during the lowering process, so as to prevent the mechanical injury to the human body due to the excessive moment of the power device 21 during the lowering motion of the lifting door 300, and improve the safety in use. The driving device 100 has the advantages of simple structure, fewer parts, compact structure, high reliability and low cost.

Optionally, the driving wheel 1 is a gear, and a rack 500 is provided on the lifting door 300, and the gear is engaged with the rack 500. This makes it possible to simply and efficiently perform driving. Alternatively, in other embodiments, the driving wheel 1 may be a driving wheel in a belt wheel mechanism, and the lifting door 300 is driven to lift through the belt wheel mechanism, or the driving wheel 1 may be a crank wheel in a crank-slider mechanism, and the lifting door 300 is driven to lift through a slider, and so on, which are not limited herein.

It should be noted that the driving device 100 according to the embodiment of the present invention may be used in other cases with the lifting door 300 besides the air conditioner 1000, and is not limited herein. In addition, the driving device 100 may be used to drive the lifting door 300 to play a role of rotation blocking protection when the lifting door 300 descends, and the driving device 100 may also be used to drive other movable components to play a role of rotation blocking protection, for example, two horizontally-pulling switch doors that are oppositely opened may play a role of rotation blocking protection when the two switch doors move towards the middle and are closed to meet an obstacle, which is not described herein again.

Next, an air conditioner 1000 according to an embodiment of the present invention is described.

In this embodiment, referring to fig. 13 to 17, the air conditioner 1000 includes a main unit 200, the main unit 200 is an air conditioner main unit, the air conditioner main unit has a storage space 201 therein, the lift door 300 can be used to open and close the storage space 201, the storage space 201 can be used to store the mobile handset 400, so that the mobile handset 400 can be taken out from the storage space 201 when the lift door 300 is lifted up to open the storage space 201, and the lift door 300 can be lowered to close the storage space 201 after the mobile handset 400 is taken out or the mobile handset 400 is put back into the storage space 201.

In the present embodiment, referring to fig. 5 to 8 in combination with fig. 1 to 4 and 9 to 20, the driving device 100 is mounted on the main body 200 for driving the lifting door 300 to lift. The driving device 100 comprises a first driving wheel 221, a first intermediate ratchet wheel 31, a first driving wheel 11, a second driving wheel 222, a second intermediate ratchet wheel 32 and a second driving wheel 12 which are symmetrically arranged. The first driving wheel 11 and the second driving wheel 12 are both gears, the lifting door 300 is provided with the rack 500, both sides of the rack 500 are provided with teeth, and the first driving wheel 11 and the second driving wheel 12 are respectively meshed with both sides of the rack 500, so that the lifting stability of the driving lifting door 300 is improved, the driving moment of each driving wheel 1 is reduced, and the service life of the driving device 100 is prolonged.

The output shaft of the power device 21 is in transmission connection with the main transition gear 25 to drive the main transition gear 25 to rotate, the auxiliary transition gear 26 is in meshing transmission with the main transition gear 25, the first transmission wheel 221 is in meshing transmission with the main transition gear 25, the second transmission wheel 222 is in meshing transmission with the auxiliary transition gear 26, the first intermediate ratchet wheel 31 is arranged on the extension shaft part 23 of the first transmission wheel 221 in a sliding mode, and the second intermediate ratchet wheel 32 is arranged on the extension shaft part 23 of the second transmission wheel 222 in a sliding mode. A cylindrical spring is arranged between the first intermediate ratchet wheel 31 and the transmission rotary wheel part 24 of the first transmission wheel 221 and is used as an elastic resetting piece 4, so that the intermediate gear teeth 33 of the first intermediate ratchet wheel 31 are meshed with the ratchet wheel part gear teeth 131 of the first driving wheel 11; a cylindrical spring is also provided between the second intermediate ratchet wheel 32 and the transmission gear wheel portion 24 of the second transmission wheel 222 as elastic return means 4 to engage the intermediate teeth 33 of the second intermediate ratchet wheel 32 with the ratchet wheel teeth 131 of the second drive wheel 12. The first driving wheel 11 and the second driving wheel 12 are engaged with the rack 500 to drive the rack 500 to move up and down, so that the lifting door 300 moves up and down.

As shown in fig. 1 to 3, 9 to 10, and 14 to 15, when the lift gate 300 is driven to descend, the left second driving wheel 12 rotates clockwise, and the right first driving wheel 11 rotates counterclockwise, as viewed from the back of the lift gate 300. When the lifting door 300 is driven to ascend and descend, the second driving wheel 12 on the left side rotates counterclockwise, and the first driving wheel 11 on the right side rotates clockwise. Thus, the lifting door 300 can be driven to lift by the dual drive wheels 1.

When the first and

second driving wheels

11 and 12 are locked during the lowering of the lift gate 300, the first intermediate ratchet wheel 31 slides on the extended shaft portion 23 of the first driving wheel 221 in the first direction F1 as shown in fig. 2 to 4 to compress the elastic restoring member 4, so that the engagement between the first intermediate ratchet wheel 31 and the ratchet portion 13 of the first driving wheel 11 slips, and the second intermediate ratchet wheel 32 slides on the extended shaft portion 23 of the second driving wheel 222 in the first direction F1 as shown in fig. 2 to 4 to compress the elastic restoring member 4, so that the engagement between the second intermediate ratchet wheel 32 and the ratchet portion 13 of the second driving wheel 222 slips.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A drive device, comprising:

a power assembly including an extended shaft portion;

an intermediate ratchet for driving the intermediate ratchet to rotate synchronously, and the intermediate ratchet is capable of sliding axially along the extension shaft, the intermediate ratchet having a plurality of intermediate gear teeth, the intermediate gear teeth including: the length of the middle retaining section is smaller than that of the middle guide section;

a drive wheel, the drive wheel comprising: the ratchet wheel part is arranged on one side, facing the middle ratchet wheel, of the driving wheel part, the middle backstop section drives the ratchet wheel part to rotate forwards when the middle ratchet wheel rotates forwards, and the middle guide section drives the ratchet wheel part to rotate backwards when the middle ratchet wheel rotates backwards;

the elasticity piece that resets, the elasticity piece that resets is located one side of middle ratchet, and be configured to make when the non-lock of drive wheel changes, middle ratchet with ratchet portion compresses tightly the interlock, and middle ratchet drive ratchet portion reversal just when the drive wheel changes stifledly, make middle ratchet is followed extend the axial of axial part slide and with ratchet portion interlock skids.

2. The drive of claim 1, wherein the extended shaft portion and the intermediate ratchet wheel transmit torque through a non-circular surface engagement.

3. The drive device as claimed in claim 1, wherein the ratchet portion has a plurality of ratchet portion teeth projecting toward the intermediate ratchet along an axis of the drive wheel, the plurality of intermediate teeth projecting toward the drive wheel along the axis of the intermediate ratchet, the ratchet portion teeth conforming in tooth shape to the intermediate wheel, and the ratchet portion teeth include a drive guide section and a drive backstop section, the drive backstop section being driven by the intermediate backstop section when the intermediate ratchet is rotated in the forward direction, and the drive guide section being driven by the intermediate guide section when the intermediate ratchet is rotated in the reverse direction.

4. The driving device as claimed in claim 3, wherein the positive normal direction of the intermediate backstop section is perpendicular to the axis of the intermediate ratchet wheel; or the positive direction of the normal of the middle backstop section points to the middle ratchet wheel.

5. The drive of claim 1, wherein the power assembly comprises:

a power plant;

the power device is used for driving the driving wheel to rotate forwards or reversely, and the driving wheel comprises: drive runner portion, it links to each other to extend the fixed phase of axial region drive runner portion's orientation one side of middle ratchet, elasticity resets and is the cylindrical spring, the cylindrical spring cover is located extend the axial region outer and end and support middle ratchet with between the drive runner portion.

6. The driving apparatus as claimed in claim 5, wherein the driving wheel, the driving wheel and the intermediate ratchet wheel are all provided in plural, the axes of the plural intermediate ratchet wheels are arranged in parallel, and each intermediate ratchet wheel is located on the same axis with the corresponding driving wheel and the corresponding driving wheel.

7. The drive of claim 6, wherein the power assembly further comprises: the output shaft of the power device is in transmission connection with the main transition gear, the auxiliary transition gear is in meshing transmission with the main transition gear, and the auxiliary transition gear and the main transition gear are suitable for being meshed with different driving wheels.

8. The drive of claim 7, further comprising: the box subassembly, the box subassembly includes the gear box, the gear box includes gear box body and gear box lid, the gear box body with form the gear train installation space between the gear box lid, main transition gear vice transition gear the drive wheel is installed in the gear train installation space, be provided with the confession on the gear box body the first perforation that power device's output shaft penetrated, be provided with the confession on the gear box lid extend the second perforation that the axial region was worn out.

9. The drive of claim 8, wherein the cartridge assembly further comprises:

the wheel cover is arranged on the driving wheel and connected with the gear box, and the driving wheel is directly or indirectly rotatably supported on the wheel cover;

the driving cover is arranged on the power device and connected with the gear box, and the power device is directly or indirectly supported on the driving cover.

10. The drive of claim 9, wherein a vibration damper is disposed between the power unit and the drive cover, and a vibration damper is disposed between the power unit and the gear box.

11. An air conditioner, comprising:

a host;

the lifting door can move in a lifting way relative to the main machine;

a driving device according to any one of claims 1 to 10, wherein the driving device is mounted on the main frame and cooperates with the lift gate via the driving wheel to drive the lift gate to move up and down relative to the main frame, and the driving device is configured to drive the lift gate to ascend via forward rotation of the intermediate ratchet wheel and to descend via reverse rotation of the intermediate ratchet wheel.

12. The air conditioner according to claim 11, wherein the driving wheel is a gear, and a rack is provided on the lift gate, and the gear is engaged with the rack.