CN217054808U - Drive device and air conditioning equipment with same - Google Patents

Abstract

The utility model discloses a drive arrangement and air conditioning equipment who has it, drive arrangement includes drive unit, and drive unit includes: the driver comprises a rotating screw rod and a stop piece, the first meshing piece is in threaded sleeve joint with the rotating screw rod, and when the rotating screw rod rotates forwards relative to the first meshing piece, the first meshing piece moves along the direction from the head end to the root end and is limited by the stop piece to move at the limit position; the surfaces of the second engagement piece and the first engagement piece which are opposite to each other along the axial direction of the rotating screw rod are suitable for engagement; the driving wheel is in transmission connection with the second meshing piece; the elastic reset piece is arranged between the driving wheel and the second occlusion piece, when the second occlusion piece is not locked, the second occlusion piece is tightly pressed and occluded with the first occlusion piece, and when the screw rod rotates positively and the second occlusion piece is locked, the first occlusion piece and the first occlusion piece are occluded and slipped. Therefore, the driving device has a locked rotor protection function.

Description

Drive device and air conditioning equipment with same

Technical Field

The utility model belongs to the technical field of the air conditioning technology and specifically relates to a drive arrangement and air conditioning equipment who has it is related to.

Background

Some air conditioners in the related art are provided with a liftable lifting door, in order to avoid the lifting door from descending and clamping hands, a ratchet mechanism is added in a driving device of the lifting door, the ratchet mechanism causes the driving force required by a driver to be larger, and the driver with the same specification is difficult to drive the heavier lifting door to move. Moreover, the ratchet mechanism has relatively complex structure, low working reliability and high cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a drive arrangement, drive arrangement has stifled commentaries on classics protect function, and can not influence the normal drive power size of driver.

The utility model discloses still provide an air conditioning equipment who has above-mentioned drive arrangement.

According to the utility model discloses drive arrangement of first aspect embodiment, including at least one drive unit, drive unit includes: the driver comprises a rotating screw rod and a stop piece, and the two axial ends of the rotating screw rod are respectively a head end and a root end; a first engaging member threadably received on said rotating lead screw and configured to move in a direction from said head end to said root end when said rotating lead screw is rotated in a forward direction relative to said first engaging member, said stop for limiting an extreme position of movement of said first engaging member in a direction from said head end to said root end; a second engaging piece, which is arranged in sequence with the first engaging piece along the direction from the head end to the root end in the axial direction of the rotating screw rod, and the surfaces of the second engaging piece and the first engaging piece opposite to each other along the axial direction of the rotating screw rod are adapted to engage; the driving wheel is arranged on one side, far away from the first meshing piece, of the second meshing piece in the axial direction of the rotating screw rod, and at least part of the driving wheel is in transmission connection with the second meshing piece so as to rotate synchronously with the second meshing piece; the elastic resetting piece is arranged between the driving wheel and the second occluding piece and is configured to enable the second occluding piece to be tightly occluded with the first occluding piece when the second occluding piece is not locked, and enable the first occluding piece to move to the limit position and to be occluded with the second occluding piece to slip when the rotating screw rod rotates positively and the second occluding piece is locked.

According to the utility model discloses drive arrangement has stifled commentaries on classics protect function, and can not influence the normal drive power size of driver, can drive heavier part to have simple structure, spare part is less, compact structure, reliability height, advantage such as with low costs.

In some embodiments, the driving wheel includes a connecting shaft, an axial direction of the connecting shaft is the same as an axial direction of the rotating screw rod, and the second engaging member includes a sleeve portion, which is sleeved outside the connecting shaft so as to be slidable in the axial direction of the connecting shaft.

In some embodiments, the connecting shaft and the shaft sleeve part are matched to transmit torque through a non-circular surface.

In some embodiments, the drive wheel still includes the runner portion, runner portion locates keeping away from of connecting axle the axial one end of rotating the lead screw, the second interlock piece still includes second interlock portion, the second interlock portion is located keeping away from of axle sleeve portion the axial one end of runner portion, elasticity resets and is cylindrical spring, the cylindrical spring cover is located outside the axle sleeve portion and end to be in the runner portion with between the second interlock portion.

In some embodiments, the first engaging member includes a threaded sleeve portion and a first engaging portion, the threaded sleeve portion is threadedly coupled to the rotating screw, the first engaging portion is disposed at an axial end of the threaded sleeve portion close to the rotating wheel portion, and the driving wheel further includes a sleeve portion, and the second engaging portion and the first engaging portion are disposed in the sleeve portion.

In some embodiments, the driving device further comprises: the box assembly comprises a drive box, the driver is installed in the drive box, a through hole is formed in the drive box, the drive wheel comprises a sleeve portion, a blocking portion is arranged on the outer peripheral wall of the sleeve portion, the sleeve portion is inserted into the through hole, and the blocking portion is blocked outside the drive box.

In some embodiments, the cartridge assembly further comprises: the wheel cap covers the driving wheel and is connected with the driving box, and the driving wheel is directly or indirectly rotatably supported on the wheel cap.

In some embodiments, a vibration damper is disposed within the drive cartridge, the vibration damper being disposed between the driver and the drive cartridge.

In some embodiments, the stop is disposed on the rotating screw and rotates synchronously with the rotating screw.

In some embodiments, the driving device comprises two driving units, and the two driving units are symmetrically arranged.

According to the utility model discloses air conditioning equipment of second aspect embodiment includes: a host; the lifting door can move in a lifting way relative to the main machine; drive arrangement, drive arrangement is according to the utility model discloses the drive arrangement of first aspect embodiment, drive arrangement install in the host computer, and pass through the drive wheel with the overhead door cooperation, in order to drive the overhead door is relative host computer elevating movement, drive arrangement is configured as to pass through the corotation drive of rotation lead screw the overhead door descends, through the reversal drive of rotation lead screw the overhead door rises.

According to the utility model discloses air conditioning equipment is through setting up according to the utility model discloses the drive arrangement of first aspect embodiment has the overhead door stifled protect function that changes that descends to can prevent that the overhead door from in the motion process that descends, because of the too big mechanical injury that causes of driver moment to the human body, improve the safety in utilization. Compared with a ratchet wheel protection device, the driving device has the advantages of simple structure, fewer parts, compact structure, high reliability and low cost. And, drive arrangement is under the prerequisite that possesses the locked-rotor protect function, can not influence the normal drive power size of driver, and life and reliability are higher, are fit for driving the lift door of great weight and go up and down.

In some embodiments, the driving wheel is a gear, and a rack is provided on the lifting door, and the gear is engaged with the rack.

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 an embodiment of the present invention;

FIG. 2 is a perspective view of another angle of the drive shown in FIG. 1;

FIG. 3 is an exploded view of the drive device shown in FIG. 1;

FIG. 4 is an exploded view of one of the drive units shown in FIG. 3;

FIG. 5 is an exploded view of another angle of the drive unit shown in FIG. 4;

FIG. 6 is a front view of the drive device shown in FIG. 2;

fig. 7 is an assembled view of the drive unit shown in fig. 5 with the drive wheel in a cross-sectional view;

FIG. 8 is a partial cross-sectional view taken along line A-A of FIG. 6;

FIG. 9 is a schematic view of another state of the drive unit shown in FIG. 7;

fig. 10 is a sectional view of the driving unit shown in fig. 9;

FIG. 11 is a schematic view of yet another state of the drive unit shown in FIG. 7;

fig. 12 is a sectional view of the driving unit shown in fig. 11;

fig. 13 is a perspective view of an air conditioning apparatus according to an embodiment of the present invention;

fig. 14 is a state view after the lift gate is raised in the air-conditioning apparatus shown in fig. 13;

fig. 15 is a state diagram after the mobile handset is taken out from the air conditioning apparatus shown in fig. 14;

fig. 16 is an exploded view of the air conditioning device shown in fig. 14;

fig. 17 is an exploded view of another angle of the air conditioning device shown in fig. 16;

FIG. 18 is an assembly view of the lift gate, rack and drive assembly shown in FIG. 17;

FIG. 19 is an assembled view of the rack and drive arrangement shown in FIG. 18;

FIG. 20 is a partial schematic view of the drive arrangement shown in FIG. 18 in one state;

FIG. 21 is a schematic view of a drive unit shown in FIG. 20 engaged with a rack;

FIG. 22 is a partial schematic view of the drive arrangement shown in FIG. 18 in another state;

FIG. 23 is a schematic view of a drive unit shown in FIG. 22 engaged with a rack;

FIG. 24 is a partial schematic view of the drive arrangement shown in FIG. 18 in yet another state;

fig. 25 is a schematic view of the engagement of one of the drive units shown in fig. 24 with the rack.

Reference numerals are as follows:

an air conditioning apparatus 1000;

a drive device 100;

a drive unit 101; a first direction F1; a second direction F2;

a drive wheel 1; a connecting shaft 11; a rotor section 12; a sleeve portion 13; a gear portion 131;

a driver 2; rotating the screw rod 21; a head end 211; a root end 212; a stopper 22;

a motor 23; a motor shaft 231;

an engaging member 3;

the first engaging piece 31; the first engaging tooth surface 311; a threaded sleeve portion 312; a first engaging portion 313;

second engaging member 32; second engaging tooth surface 321; a boss portion 322; a second engaging portion 323;

an elastic reset member 4; a screw 5;

a cartridge assembly 102;

a drive cassette 6; perforations 61; a first box 62; the second container 63;

a wheel cover 7; a bearing 8; a vibration damping member 9; a first damper 91; a second damper 92;

a host 200; a housing space 201; a lift gate 300; moving the sub-machine 400; 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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Next, a driving device 100 according to an embodiment of the first aspect of the present invention is described with reference to the drawings.

As shown in fig. 1 to 3, a driving apparatus 100 according to an embodiment of the present invention includes at least one driving unit 101. That is, the driving apparatus 100 may include only one driving unit 101, or may include a plurality of driving units 101 at the same time, for example, two driving units 101, or three driving units 101, or four driving units 101, etc. When there are a plurality of driving units 101, the structures of the plurality of driving units 101 may be the same, or the structures of at least two driving units 101 may be different, and may be set according to actual situations.

In the following, a number of alternative embodiments of a single drive unit 101 are described, whereby each drive unit 101 may select any one of the embodiments to form a number of different combinations. As shown in conjunction with fig. 3 to 5, the driving unit 101 may include: drive wheel 1, driver 2, meshing assembly 3 and elastic reset piece 4, meshing assembly 3 includes first meshing piece 31 and second meshing piece 32.

As shown in fig. 4 and 5, the driver 2 includes a rotation screw 21, and the driver 2 can drive the rotation screw 21 to rotate forward and backward, and it should be noted that forward rotation and backward rotation refer to opposite directions, but not limited to specific rotation directions, for example, for one driving unit 101, clockwise rotation is forward rotation, and counterclockwise rotation is backward rotation, and for another driving unit 101, counterclockwise rotation is forward rotation, and clockwise rotation is backward rotation.

As shown in fig. 4 and 5, the two axial ends of the rotary screw 21 are the head end 211 and the root end 212, respectively, and the direction from the head end 211 to the root end 212 is defined as a first direction F1, and the opposite direction, i.e., the direction from the root end 212 to the head end 211, is defined as a second direction F2.

Referring to fig. 6-8, the first engaging member 31 is threadedly received on the rotating screw 21 and configured such that when the rotating screw 21 rotates in a forward direction relative to the first engaging member 31 (i.e., when the first engaging member 31 rotates in a reverse direction relative to the rotating screw 21), the first engaging member 31 moves in a direction from the head end 211 to the root end 212 (i.e., the first direction F1 shown in the figure), and when the rotating screw 21 rotates in a reverse direction relative to the first engaging member 31 (i.e., when the first engaging member 31 rotates in a forward direction relative to the rotating screw 21), the first engaging member 31 moves in a direction from the root end 212 to the head end 211 (i.e., the second direction F2 shown in the figure).

As shown in fig. 7-10, the driver 2 further comprises a stopper 22, and the stopper 22 is used for limiting the limit position of the first engaging member 31 moving along the direction from the head end 211 to the root end 212 (for example, the first direction F1 shown in the figure). That is, when the rotating screw 21 rotates forward relative to the first engaging member 31, the first engaging member 31 moves along the rotating screw 21 toward the first direction F1 until the first engaging member 31 reaches the limit position when the first engaging member 31 comes into stop engagement with the stopper 22, after which the first engaging member 31 may follow the rotating screw 21 to rotate forward.

As shown in fig. 4 and 5, the second engaging member 32 and the first engaging member 31 are sequentially arranged along the axial direction of the rotating screw 21 from the head end 211 to the root end 212 (as shown in the first direction F1 in fig. 4 and 5), and surfaces of the second engaging member 32 and the first engaging member 31 opposite to each other along the axial direction of the rotating screw 21 are adapted to engage, and when the second engaging member 32 and the first engaging member 31 are pressed and engaged, the second engaging member 32 and the first engaging member 31 are relatively stationary to stop or rotate together. That is, in the axial direction of the rotating screw 21, a side of the first engaging member 31 facing the second engaging member 32 has a first engaging tooth surface 311, a side of the second engaging member 32 facing the first engaging member 31 has a second engaging tooth surface 321, the second engaging tooth surface 321 is adapted to engage with the first engaging tooth surface 311, and when the second engaging tooth surface 321 is in compressive engagement with the first engaging tooth surface 311, the second engaging member 32 and the first engaging member 31 are relatively stationary to stop or rotate synchronously together.

As shown in fig. 5-8, at least a part of the driving wheel 1 is arranged on a side of the second engagement member 32 remote from the first engagement member 31 in the axial direction of the rotating screw 21, and the second engagement member 32 is in driving connection with the driving wheel 1 for synchronous rotation with the driving wheel 1. Therefore, if the rotating screw 21 drives the first engaging member 31 to rotate and the first engaging member 31 and the second engaging member 32 are tightly engaged, the first engaging member 31 can drive the second engaging member 32 and the first engaging member 31 to rotate synchronously, and meanwhile, the second engaging member 32 can drive the driving wheel 1 and the second engaging member 32 to rotate synchronously. When driving wheel 1 is restrained from rotating, driving wheel 1 may restrain second engagement member 32 from also rotating, and if first engagement member 31 is in compressive engagement with second engagement member 32, second engagement member 32 also restrains first engagement member 31 from rotating.

As shown in fig. 7-12, the elastic restoring member 4 is disposed between the driving wheel 1 and the second engaging member 32, and the elastic restoring member 4 is configured to press and engage the second engaging member 32 with the first engaging member 31 when the second engaging member 32 is not locked, and to move the first engaging member 31 to the limit position and engage and slip with the second engaging member 32 when the rotating screw 21 rotates forward and the second engaging member 32 is locked (abbreviated as forward rotation locked state), more specifically, when the rotating screw 21 rotates forward and the second engaging member 32 is locked, the first engaging member 31 moves to the limit position under the action of the elastic restoring member 4 and the second engaging member 32, and the second engaging member 32 reciprocates in the axial direction of the rotating screw 21 under the action of the elastic restoring member 4 and the first engaging member 31 to slip with the engagement of the first engaging member 31; after the second engaging member 32 is released from the locked rotation, the second engaging member 32 and the first engaging member 31 are restored to the pressed engagement by the elastic restoring member 4 due to the restoration to the non-locked rotation state.

Therefore, in the non-locked state, the second engaging element 32 and the first engaging element 31 are kept in pressing engagement by the elastic restoring element 4, in the locked state, the second engaging element 32 and the first engaging element 31 are restored to pressing engagement by the elastic restoring element 4, and in the normal rotation locked state, the second engaging element 32 and the first engaging element 31 are engaged and slipped.

Specifically, the elastic restoring member 4 disposed between the driving wheel 1 and the second engaging member 32 applies an elastic force to the second engaging member 32 for urging the second engaging member 32 to engage with the first engaging member 31, i.e. the elastic force has a first direction F1, but whether the elastic force can urge the second engaging member 32 to engage with the first engaging member 31 or not depends on the position of the first engaging member 31 and the state of the second engaging member 32.

For example, as shown in fig. 7 and 8, when the first engaging member 31 does not reach the position of stopping engagement with the stopper 22 (i.e. does not reach the limit position), and the forward rotation of the second engaging member 32 is not limited (i.e. when the second engaging member 32 is in the non-locked rotation state), the elastic restoring member 4 may press-engage the second engaging member 32 with the first engaging member 31, and at this time, the first engaging member 31 and the second engaging member 32 may be stopped or rotated together. As shown in fig. 9 and 10, when first engaging member 31 is located at the limit position in stop engagement with stopper 22 and the forward rotation of second engaging member 32 is not restricted (i.e. when second engaging member 32 is in the de-locked state), elastic restoring member 4 can press second engaging member 32 into engagement with first engaging member 31, and at this time, first engaging member 31 and second engaging member 32 can rotate synchronously.

As shown in fig. 9 and 10, when the first engaging member 31 reaches the limit position of the stop engagement with the stop member 22, if the second engaging member 32 is positively restrained (i.e. when the second engaging member 32 is positively locked and rotated), the elastic restoring member 4 cannot make the second engaging member 32 press and engage with the first engaging member 31, and the first engaging member 31 rotated by the rotating screw 21 and the second engaging member 32 rotate relatively, and at this time, the second engaging member 32 and the first engaging member 31 continuously switch between the engaged state (for example, shown in fig. 10) and the disengaged state (for example, shown in fig. 12).

The following describes, by way of example, the operation of "when the second engaging member 32 is not locked, the second engaging member 32 is pressed into engagement with the first engaging member 31, and when the rotating screw 21 rotates forward and the second engaging member 32 is locked, the first engaging member 31 moves to the limit position and engages and slips with the second engaging member 32".

For example, as shown in fig. 7 and 8, when the rotating screw 21 rotates forward to drive the first engaging member 31 to rotate forward, by compressive engagement of second engagement member 32 with first engagement member 31, second engagement member 32 also follows forward rotation of first engagement member 31, during the process of second engagement member 32 following forward rotation, if forward rotation is limited by the influence of external forces, that is, the second engaging member 32 is restricted, and when the second engaging member 32 cannot rotate forward continuously (i.e. when the second engaging member 32 is locked by rotating forward), the first engaging member 31 pressed and engaged with the second engaging member 32 cannot rotate forward continuously, but the rotating screw 21 is not restricted and can rotate forward continuously, so that the second engaging member 32 and the first engaging member 31 will move together along the first direction F1 under the elastic force applied by the restoring elastic member toward the first direction F1 until the first engaging member 31 reaches the limit position (as shown in fig. 9 and 10).

The first engaging member 31 reaching the limit position rotates forward along with the screw, and the second engaging member 32 with restricted forward rotation generates a continuous change in the relative positions of the first engaging tooth surface 311 and the second engaging tooth surface 321 due to the forward rotation of the first engaging member 31, and when the tooth portion of the first engaging tooth surface 311 and the tooth portion of the second engaging tooth surface 321 gradually approach each other, the second engaging member 32 is gradually pushed toward the second direction F2 by the first engaging member 31 to move toward the second direction F2 against the elastic force of the return elastic member (as shown in fig. 11 and 12). When the tooth portions of first engaging tooth surface 311 and the groove portions of second engaging tooth surface 321 gradually approach each other, the pushing force applied by first engaging member 31 to second direction F2 is gradually reduced, which is insufficient to overcome the elastic force of the returning elastic member, so that second engaging member 32 moves toward first direction F1 (as shown in fig. 9 and 10) under the elastic force of the returning elastic member.

Therefore, when the second occluding part 32 is blocked in positive rotation, the axial reciprocating motion along the rotating screw rod 21 can be presented, and the occlusion slipping phenomenon of non-pressing occlusion on the surfaces of the second occluding part 32 and the first occluding part 31 opposite to each other can be avoided, so that when the second occluding part 32 is blocked in positive rotation, the abrasion between the first occluding part 31 and the second occluding part 32 can be reduced, the problems of burning loss and the like of the driver 2 can be avoided, and the effective blocking and rotation protection effect can be achieved.

Further, as shown in fig. 9 and 10, when first engaging member 31 is in the extreme position and when the positive rotation of second engaging member 32 is removed (i.e. second engaging member 32 is in the de-locked state), elastic restoring member 4 can drive second engaging member 32 into compressive engagement with first engaging member 31. At this time, if the second engaging member 32 can receive the restoring torque in the forward rotation direction, and the restoring torque drives the forward rotation speed of the second engaging member 32 to be greater than the forward rotation speed of the rotating screw rod 21, the second engaging member 32 and the first engaging member 31 which are pressed and engaged can synchronously rotate the screw rod 21 in the forward rotation direction relatively, until the elastic restoring member 4 is compressed to the limit state, and thereafter, the second engaging member 32 and the first engaging member 31 which are pressed and engaged can rotate in the same direction along with the rotating screw rod 21, so as to meet the driving requirement that the driver 2 drives the driving wheel 1 to work through the engaging assembly 3.

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 conditioning apparatus 1000.

As shown in fig. 13-15, the air conditioning equipment 1000 further 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 when the storage space 201 is opened by the lift gate 300, the mobile handset 400 may be taken out from the storage space 201, and so on, and the function of the lift gate 300 will not be described in detail herein.

As shown in fig. 16-19, the driving device 100 is mounted on the main body 200, and cooperates with the lifting door 300 via the driving wheel 1 to drive the lifting door 300 to move relative to the main body 200. 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 in a lifting manner relative to the main frame 200. The driving device 100 is configured such that the elevation door 300 is driven to descend by the forward rotation of the rotation screw 21, and the elevation door 300 is driven to ascend by the reverse rotation of the rotation screw 21.

When the driving device 100 is used, as shown in fig. 20-21, in a non-locked-rotation state, the second engaging member 32 and the first engaging member 31 are in a pressed engaging state under the action of the elastic restoring member 4, and since the gear is engaged with the rack 500, the rack 500 is subjected to the weight of the lifting door 300, and provides a restoring torque for forward rotation of the gear to the gear, and the restoring torque is transmitted to the second engaging member 32 through the gear, so as to drive the forward rotation of the second engaging member 32 and the rotating speed is greater than the forward rotating speed of the rotating screw 21, so that the pressed-engaged second engaging member 32 can drive the first engaging member 31 to rotate forward relative to the rotating screw 21 together, and thus the first engaging member 31 and the second engaging member 32 both move along the rotating screw 21 towards the second direction F2 close to the gear until the elastic restoring member 4 is compressed to a limit state.

As shown in fig. 20-21, in this state (i.e. the elastic restoring member 4 is compressed to the limit state and is not locked to rotate), if the rotating screw rod 21 rotates forward, the rotating screw rod 21 can drive the first engaging member 31 to rotate forward, the first engaging member 31 and the second engaging member 32 are pressed and engaged to rotate forward synchronously, and the forward rotation of the second engaging member 32 is driven by the driving connection with the gear to move forward, so that the rack 500 drives the lifting door 300 to move downward, thereby realizing the effect of rotating the screw rod 21 to rotate forward and driving the lifting door 300 to descend; similarly, if the rotating screw rod 21 rotates reversely, the rotating screw rod 21 can drive the first engaging piece 31 to rotate reversely, the first engaging piece 31 and the second engaging piece 32 are pressed and engaged to rotate synchronously reversely, and the second engaging piece 32 rotating reversely drives the gear to move reversely through transmission connection with the gear, so that the rack 500 drives the lifting door 300 to move upwards, and the effects of rotating the screw rod 21 to rotate reversely and driving the lifting door 300 to lift are achieved.

During the descending of the ascending/descending door 300, if the ascending/descending door 300 is interfered by an obstacle, for example, a person puts a hand under the ascending/descending door 300 to hinder the descending movement of the ascending/descending door 300, at this time, the descending-restricted ascending/descending door 300 restricts the rotation of the gear to stop the rotation of the gear, at this time, the stopped gear transmission causes the second engaging member 32 to stop the rotation as well, and the first engaging member 31 is moved to the limit position by the elastic restoring member 4 and the second engaging member 32, as shown in fig. 22-23, and the second engaging member 32 is reciprocated along the axial direction of the rotating screw 21 by the elastic restoring member 4 and the first engaging member 31 to engage and slip with the first engaging member 31, as shown in fig. 24-25.

More specifically, when the normal rotation is locked, the first engaging member 31 is also stopped rotating under the engaging action of the second engaging member 32 under the elastic force of the elastic restoring member 4, at this time, the rotating screw 21 continues to rotate forward, and the elastic restoring member 4 pushes the first engaging member 31 to slide along the first direction F1 of the rotating screw 21 facing away from the gear through the second engaging member 32 until the first engaging member 31 reaches the limit position where the stop member 22 is in stop fit with the stop member 22, as shown in fig. 22-23. Thereafter, the first engaging member 31 rotates forward following the rotation screw 21, and the second engaging member 32, which is restricted in rotation, assumes an engaging slip state of reciprocating in the axial direction of the rotation screw 21 by the relative engaging change of the first engaging tooth surface 311 and the second engaging tooth surface 321 and by the restoring elastic member, as shown in fig. 24 to 25.

Therefore, the first engaging piece 31 and the second engaging piece 32 are engaged and slipped under the locked-rotor state through the design, so that the lifting door 300 can not be continuously lowered under the action of the driving device 100 any more, on one hand, the driving device 100 is protected, such as the driver 2 is prevented from being burnt and the driving shaft is twisted off, on the other hand, obstacles are protected, such as the hand clamping and the like, the use safety is good, the driving device 100 is not easy to damage, and the service life is long.

Further, when the interfering object is removed, the locked rotation of the second engaging element 32 is released, at this time, the elastic restoring element 4 makes the second engaging element 32 and the first engaging element 31 restore the pressed engagement state, and under the action of the restoring torque applied by the weight of the elevator door 300 and the like, the rotating speed of the second engaging element 32 in the forward direction of the rotating screw 21 is greater than the rotating speed of the rotating screw 21 in the forward direction, so that the second engaging element 32 engaged with each other drives the first engaging element 31 to rotate around the rotating screw 21 in the forward direction of the rotating screw 21, so that the first engaging element 31 moves along the rotating screw 21 in the second direction F2 close to the gear, so as to restore the state that the elastic restoring element 4 is compressed to the limit state, as shown in fig. 20-21. In this state, if the rotary screw 21 rotates forward, the elevating door 300 is driven to descend, and if the rotary screw 21 rotates backward, the elevating door 300 is driven to ascend.

Therefore, according to the utility model discloses drive arrangement 100, when being applied to air conditioning equipment 1000, have overhead door 300 and descend stifled commentaries on classics protect function, compare in ratchet protection device, have simple structure, the lower advantage of cost. And, according to the utility model discloses drive arrangement 100 can not influence the normal drive power size of driver 2, and life and reliability are higher, are fit for driving the overhead door 300 lift of great weight. And, because according to the utility model discloses drive arrangement 100 has the lift door 300 and descends stifled commentaries on classics protect function to can prevent lift door 300 in the descending motion process, because of 2 too big mechanical injuries to the human body that cause of moment of driver, improve the safety in utilization. In addition, according to the utility model discloses drive arrangement 100, spare part is less, compact structure, reliability height, with low costs.

In some embodiments of the present invention, as shown in fig. 4-5 and 8, the stop member 22 may be disposed on the rotation screw 21 and rotate synchronously with the rotation screw 21, so that in the locked-rotor condition, relative rotational wear between the stop member 22 and the first engaging member 31 may be avoided, and the installation and positioning of the stop member 22 may be simplified. However, it should be noted that the specific connection manner of the stop member 22 and the rotating screw 21 is not limited, for example, in some alternative examples, the stop member 22 and the rotating screw 21 are made as a single piece, so as to facilitate processing and manufacturing, and the connection reliability of the stop member 22 and the rotating screw 21 is good, or the stop member 22 and the rotating screw 21 may also be made as a single piece and assembled and connected, so that different processing methods can be selected to meet different practical requirements.

For example, in some alternative examples, as shown in fig. 4-5 and 8, the stop 22 is a shoulder integrally formed on the rotary screw 21, and the stop 22 is disposed proximate the root end 212 relative to the head end 211. Therefore, the structure is compact, and the reliability of the stop is good. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the stop member 22 may be set to have no connection relation with the rotating screw rod 21, and so on, which will not be described herein.

In some embodiments of the present invention, as shown in fig. 8, the driver 2 may include a motor 23, the motor 23 includes a motor shaft 231, and the rotating screw 21 is sleeved on the motor shaft 231 and rotates synchronously with the motor shaft 231. Therefore, the structure of the driver 2 can be simplified, the structure compactness can be improved, and the reliability of driving the rotation of the rotation screw 21 can be improved, and in addition, the connection of the motor 23 and the rotation screw 21 can be simplified through the sleeve connection of the rotation screw 21 and the motor shaft 231.

For example, in some alternative examples, as shown in fig. 8, the rotation screw 21 and the motor shaft 231 can transmit torque through a non-circular surface, thereby simplifying the transmission connection between the two and ensuring the reliability of the transmission connection. Further, as shown in fig. 8, the rotary screw 21 and the motor shaft 231 may also be coupled by a screw 5 extending in the axial direction of the motor shaft 231, whereby the reliability and stability of the coupling therebetween may be improved. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the rotation screw 21 and the motor 23 may be connected by setting other transmission mechanisms, which is not described herein.

In some embodiments of the present invention, as shown in fig. 8, the driving wheel 1 may include a connecting shaft 11, an axial direction of the connecting shaft 11 is the same as an axial direction of the rotating lead screw 21, the second engaging member 32 includes a sleeve portion 322, and the sleeve portion 322 is sleeved outside the connecting shaft 11 to be slidable along the axial direction of the connecting shaft 11. Therefore, the matching of the connecting shaft 11 and the sleeve portion 322 can guide the movement of the second engaging member 32, so as to improve the movement stability of the second engaging member 32, and further improve the engaging reliability of the first engaging member 31 and the second engaging member 32, and the matching is convenient for assembling and convenient for processing the driving wheel 1 and the second engaging member 32. 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 connecting shaft 11, and the second engaging member 32 is configured to have a shaft pin inserted into the shaft hole, so as to realize guiding engagement, which is not described herein.

In some embodiments of the present invention, as shown in fig. 8, the connecting shaft 11 and the sleeve portion 322 cooperate to transmit torque through a non-circular surface. Therefore, the guiding function can be achieved by the matching of the connecting shaft 11 and the shaft sleeve portion 322, the torque transmission function can be achieved by the matching of the connecting shaft 11 and the shaft sleeve portion 322, other torque connecting pieces do not need to be introduced, on one hand, parts and cost are simplified, on the other hand, the introduced other torque connecting pieces can be avoided, interference is caused on the axial movement of the second meshing piece 32 relative to the driving wheel 1, and meshing slipping protection of the driving device 100 under the condition of locked rotor is guaranteed. Therefore, the design is very ingenious, and the structure is compact.

In some embodiments of the present invention, as shown in fig. 8, the driving wheel 1 may further include a rotating wheel portion 12, the rotating wheel portion 12 is disposed at an axial end of the connecting shaft 11 away from the rotating screw 21, the second engaging member 32 further includes a second engaging portion 323, the second engaging portion 323 is disposed at an axial end of the sleeve portion 322 away from the rotating wheel portion 12, an axial end surface of the second engaging portion 323 facing one side of the second engaging member 32 may be formed as a first engaging tooth surface 311, the elastic restoring member 4 is a cylindrical spring, and the cylindrical spring is sleeved outside the sleeve portion 322 and is stopped between the rotating wheel portion 12 and the second engaging portion 323. 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 can be set to other forms or types, and match the corresponding installation manner, for example, the elastic restoring member 4 can also be a cushion, a spring plate, an air bag, other types of springs, and so on, which are not described herein.

In some embodiments of the present invention, as shown in fig. 8, the first engaging member 31 includes a threaded sleeve portion 312 and a first engaging portion 313, the threaded sleeve portion 312 is threadedly engaged with the rotating screw 21, the first engaging portion 313 is disposed at an axial end of the threaded sleeve portion 312 close to the rotating wheel portion 12, an end surface of the first engaging portion 313 facing the first engaging member 31 may be formed as a second engaging tooth surface 321, the driving wheel 1 further includes a sleeve portion 13, and the second engaging portion 323 and the first engaging portion 313 are disposed in the sleeve portion 13. Accordingly, the sleeve portion 13 protects the second engaging portion 323, the first engaging portion 313, the elastic restoring member 4, and the like, thereby improving the operational reliability of the drive device 100.

In some embodiments of the present invention, as shown in fig. 3 and 8, the driving device 100 may further include: the cartridge assembly 102, the cartridge assembly 102 includes the driving cartridge 6, the driver 2 is installed in the driving cartridge 6, and the driving cartridge 6 has a through hole 61, the driving wheel 1 includes a sleeve portion 13, a retaining portion 131 is provided on an outer peripheral wall of the sleeve portion 13, the sleeve portion 13 is inserted into the through hole 61, and the retaining portion 131 is retained outside the driving cartridge 6. Therefore, the relative limit of the driving wheel and the driver 2 can be realized, and the driving wheel can provide enough reaction force for the reset elastic piece to improve the meshing reliability of the meshing component 3. However, the sleeve portion 13 of the present embodiment may be, but is not limited to, the sleeve portion 13 that is covered outside the second engaging portion 323 and the first engaging portion 313 in the above embodiment.

In some embodiments of the present invention, as shown in fig. 3 and 8, the box assembly 102 may further include: the wheel cover 7 is covered on the driving wheel 1, the wheel cover 7 is connected with the driving box 6, and the driving wheel 1 is directly or indirectly rotatably supported on 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 bearing 8 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 bearing 8.

In some embodiments of the present invention, as shown in fig. 3 and 8, a damping member 9 is disposed in the driving box 6, and the damping member 9 is disposed between the driver 2 and the driving box 6. Therefore, the effects of vibration and noise reduction can be achieved, the working reliability and stability of the motor 23 are improved, and the service life of the driver 2 is prolonged.

For example, in the specific example shown in fig. 3 and 8, the drive cassette 6 may include: first box body 62 and second box body 63, first box body 62 can dismantle with second box body 63 and link to each other, and inject the installation cavity jointly, and driver 2 can install in the installation cavity to make things convenient for the dismouting. Further, 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 first box 62 and the driver 2, and the second vibration damping member 92 is disposed between the second box 63 and the driver 2, so that a vibration damping effect between the driving box 6 and the driver 2 may be ensured, and the vibration damping member 9 is convenient to install.

In some embodiments of the present invention, one of the first engaging tooth surface 311 and the second engaging tooth surface includes a plurality of first engaging teeth, the other of the first engaging tooth surface 311 and the second engaging tooth surface includes at least one second engaging tooth, the plurality of first engaging teeth are spaced apart along a circumferential direction of the rotation screw 21, a first engaging tooth groove is formed between two adjacent first engaging teeth, and the second engaging tooth is adapted to engage with the first engaging tooth groove. Therefore, the occlusion requirement can be met.

Optionally, the number of the second meshing teeth is the same as that of the first meshing teeth, and each of the second meshing teeth is at least three, a second meshing tooth groove is formed between every two adjacent second meshing teeth, and the first meshing teeth are suitable for meshing with the second meshing tooth grooves, so that meshing stability is better, and transmission reliability is higher.

In some embodiments of the present invention, as shown in fig. 1-3, the driving device 100 may include two driving units 101, and the two driving units 101 are symmetrically disposed. Thus, the driving device 100 has a simple structure, and can be driven by two symmetrically arranged driving units 101, thereby improving the stability and reliability of driving. It should be noted that the type of the driving wheel is not limited, and the driving wheel may be a driving gear, a driving polygon wheel, or the like, as long as the driving effect can be achieved, and the driving wheel is not limited herein.

Next, with reference to the drawings, an air conditioning apparatus 1000 according to an embodiment of the second aspect of the present invention is described.

As shown in fig. 13 to 17, the air conditioning device 1000 may include: the lifting door 300 can move in a lifting way relative to the main machine 200; the driving device 100 is the driving device 100 according to the embodiment of the present invention, the driving device 100 is installed in the main machine 200, and cooperates with the lifting door 300 through the driving wheel 1 to drive the lifting door 300 to move up and down relative to the main machine 200, the driving device 100 is configured to drive the lifting door 300 to descend through the positive rotation of the rotating screw 21, and the lifting door 300 to ascend through the reverse rotation of the rotating screw 21.

From this, according to the utility model discloses air conditioning equipment 1000 is through setting up according to the utility model discloses the drive arrangement 100 of first aspect embodiment, according to the above, can have overhead door 300 and descend stifled commentaries on classics protect function to can prevent overhead door 300 in the motion process that descends, because of 2 moments of driver are too big to cause mechanical injury, improve the safety in utilization. Compared with a ratchet wheel protection device, the driving device 100 has the advantages of simple structure, fewer parts, compact structure, high reliability and low cost. In addition, the driving device 100 does not affect the normal driving force of the driver 2 on the premise of having the locked rotor protection function, has a long service life and high reliability, and is suitable for driving the lifting door 300 with a large weight to lift.

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 pulley mechanism, and the lifting door 300 is driven to lift through the belt pulley mechanism, or the driving wheel 1 may be a crank wheel in a slider-crank mechanism, and the lifting door 300 is driven to lift through a slider, and so on, which are not limited herein.

Furthermore, it should be noted that the air conditioning apparatus 1000 according to the embodiment of the present invention may be an air conditioner or an air purifier, etc., without limitation. Furthermore, the driving device 100 according to the embodiment of the present invention may be used in other occasions having the lifting door 300 besides the air-conditioning apparatus 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 arranged in a split manner play a role of rotation blocking protection when the two switch doors move towards the middle to close and reach an obstacle, and details are not described here.

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

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

In the present embodiment, referring to fig. 18 to 19 in combination with fig. 1 to 12, the driving device 100 is installed on the main body 200 for driving the lifting door 300 to lift. The drive device 100 comprises two drive units 101 arranged symmetrically. The driving wheels 1 in each driving unit 101 are gears, the lifting door 300 is provided with the rack 500, and the two driving wheels 1 are respectively meshed with two sides of the gears, so that the stability of driving the lifting of the opening and closing door is improved, the driving moment of each driving unit 101 is reduced, and the service life of the driving units 101 is prolonged.

In each driving unit 101, the motor 23 in the driver 2 drives the rotating screw rod 21 to rotate, the rotating screw rod 21 is matched with the internal thread of the first engaging piece 31, the first engaging piece 31 is matched with the second engaging piece 32 through the engaging tooth surface of the wedge-shaped structure, the second engaging piece 32 is matched with the gear through the sleeve part 322 of the hexagonal hole and the connecting shaft 11 of the hexagonal column, so that the second engaging piece and the gear are kept rotating synchronously, a cylindrical spring is arranged between the second engaging piece 32 and the gear and used as an elastic reset piece 4, so that the second engaging piece 32 is engaged with the first engaging piece 31, the gear is engaged with the rack 500, and the rack 500 is driven to move up and down to move the lifting door 300.

As shown in fig. 20 to 25, when viewed from the back of the overhead door 300, the left rotary screw 21 is a right-handed screw and turns clockwise to turn forward, and the right rotary screw 21 is a left-handed screw and turns counterclockwise to turn forward. When the elevating door 300 is driven to descend, the rotary screw 21 of the left driving unit 101 rotates clockwise, and the rotary screw 21 of the right driving unit 101 rotates counterclockwise. When the lifting door 300 is driven to ascend and descend, the rotating screw 21 of the left driving unit 101 rotates counterclockwise, and the rotating screw 21 of the right driving unit 101 rotates clockwise. Thereby, the lifting door 300 can be driven to be lifted by the double motors 23.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not 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 two or more unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means 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 present 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A drive arrangement comprising at least one drive unit, the drive unit comprising:

the driver comprises a rotating screw rod and a stop piece, and the two axial ends of the rotating screw rod are respectively a head end and a root end;

a first engaging member threadably received on said rotating lead screw and configured to move in a direction from said head end to said root end when said rotating lead screw is rotated in a forward direction relative to said first engaging member, said stop for limiting an extreme position of movement of said first engaging member in a direction from said head end to said root end;

a second engaging piece, which is arranged in sequence with the first engaging piece along the direction from the head end to the root end in the axial direction of the rotating screw rod, and the surfaces of the second engaging piece and the first engaging piece opposite to each other along the axial direction of the rotating screw rod are adapted to engage;

the driving wheel is arranged on one side, far away from the first meshing piece, of the second meshing piece in the axial direction of the rotating screw rod, and at least part of the driving wheel is in transmission connection with the second meshing piece so as to rotate synchronously with the second meshing piece;

the elastic resetting piece is arranged between the driving wheel and the second meshing piece and is configured to enable the second meshing piece to be pressed and meshed with the first meshing piece when the second meshing piece is not locked and rotated, and enable the first meshing piece to move to the limit position and be meshed and slipped with the second meshing piece when the rotating screw rod rotates positively and the second meshing piece is locked and rotated.

2. The driving device as claimed in claim 1, wherein the driving wheel includes a connecting shaft, the connecting shaft has an axial direction same as that of the rotating screw, and the second engaging member includes a sleeve portion, the sleeve portion being disposed outside the connecting shaft so as to be slidable in the axial direction of the connecting shaft.

3. The drive device according to claim 2, wherein the connecting shaft and the boss portion transmit torque through a non-circular surface fit.

4. The driving device as claimed in claim 2, wherein the driving wheel further comprises a rotating wheel portion, the rotating wheel portion is disposed at one end of the connecting shaft, which is in the axial direction, away from the rotating screw rod, the second engaging member further comprises a second engaging portion, the second engaging portion is disposed at one end of the shaft sleeve portion, which is in the axial direction, away from the rotating wheel portion, the elastic restoring member is a cylindrical spring, and the cylindrical spring is sleeved outside the shaft sleeve portion and is abutted between the rotating wheel portion and the second engaging portion.

5. The driving device as claimed in claim 4, wherein the first engaging member comprises a threaded sleeve portion and a first engaging portion, the threaded sleeve portion is threadedly engaged with the rotating screw, the first engaging portion is disposed at an axial end of the threaded sleeve portion close to the rotating wheel portion, the driving wheel further comprises a sleeve portion, and the second engaging portion and the first engaging portion are disposed in the sleeve portion.

6. The drive device according to claim 1, further comprising:

the box assembly comprises a driving box, the driver is installed in the driving box, a through hole is formed in the driving box, the driving wheel comprises a sleeve portion, a blocking portion is arranged on the outer peripheral wall of the sleeve portion, the sleeve portion is inserted into the through hole, and the blocking portion is blocked outside the driving box.

7. The drive of claim 6, wherein the cartridge assembly further comprises:

the wheel cap covers the driving wheel and is connected with the driving box, and the driving wheel is directly or indirectly rotatably supported on the wheel cap.

8. The drive of claim 7, wherein a vibration dampening member is disposed within the drive cartridge, the vibration dampening member being disposed between the drive and the drive cartridge.

9. The drive device according to claim 1, wherein the stopper is provided to the rotary screw and rotates in synchronization with the rotary screw.

10. A drive arrangement according to any one of claims 1-9, wherein the drive arrangement comprises two drive units, and wherein the two drive units are arranged symmetrically.

11. An air conditioning apparatus, characterized by comprising:

a host;

the lifting door can move in a lifting manner 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 through 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 descend through forward rotation of the rotating screw rod and to drive the lift gate to ascend through reverse rotation of the rotating screw rod.

12. The air conditioning unit of claim 11, wherein the drive wheel is a gear, and wherein a rack is provided on the lift gate, the gear being engaged with the rack.

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