CN219866089U - Motor curtain transmission mechanism - Google Patents

Abstract

The utility model belongs to the technical field of curtain equipment, and particularly relates to a motor curtain transmission mechanism. The gear speed reducing assembly is coaxially arranged in the speed reducing box body, the gear speed reducing assemblies are sequentially connected in a linkage mode, connecting pieces and connecting portions are respectively arranged at two ends of two adjacent gear speed reducing assemblies, the connecting pieces are rotatably matched with the connecting portions, and the gear speed reducing assemblies are matched with the connecting portions through the connecting pieces to form an integral installation unit which is installed in the speed reducing box body. The utility model can firstly mount and match the plurality of gear reduction assemblies outside the reduction gearbox in sequence through the connecting piece and the connecting piece when the mounting unit is formed, and then mount the mounting unit as a whole in the reduction gearbox, so that the problem that the plurality of gear reduction assemblies are difficult to mount and match together one by one in the inside of the shell is avoided, and the mounting is convenient.

Description

Motor curtain transmission mechanism

Technical Field

The utility model belongs to the technical field of curtain equipment, and particularly relates to a motor curtain transmission mechanism.

Background

With the improvement of the life quality of people, more and more people begin to pursue better life, and home intellectualization becomes a main mode of pursuing better life for people, such as the existing intelligent curtain device. The intelligent curtain generally controls the driving motor to drive the internal transmission mechanism through the wireless network to realize the function of the curtain, such as an electric opening and closing curtain series, an electric lifting curtain series, an electric sun shield, an electric ceiling curtain, an electric awning and the like on the market, and the products are greatly convenient for the life of people and improve the life quality of people.

CN107606070a in the prior art discloses a gear reducer, including shell and gear mechanism, the shell cover is located outside the gear mechanism, gear mechanism includes first order planetary gear mechanism and second order planetary gear mechanism, first order planetary gear mechanism and second order planetary gear mechanism linkage cooperation, first order planetary gear mechanism and second order planetary gear mechanism all include sun gear and three planetary gear, planetary gear and sun gear meshing are equipped with ring gear on the inner wall of shell, ring gear and gear's planetary gear's outline tooth homoenergetic meshes. The gear reducer for the curtain solves the problems that the module of the gear reducer for the curtain is smaller in a limited space, the tooth root strength of the gear is insufficient, and teeth are easy to be clamped or even the gear is damaged. The gear mechanism comprises the following specific modes in the installation process: three first planet gears are arranged on the locating pins of the first bracket and then are arranged in the upper shell together; and then the three second planetary gears are sequentially arranged on the locating pins of the second support, the first central tooth is arranged on the central locating pin at the other end of the second support, the second planetary gears, the second support and the first central tooth are arranged in the shell together after the completion, and the first central tooth is matched with the first planetary gears already arranged. However, it is difficult to mount and fit the first-stage planetary gear mechanism and the second-stage planetary gear mechanism together one by one in the housing, and the internal space of the housing itself is narrow, which makes the entire mounting process difficult and inconvenient.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a motor curtain transmission mechanism. According to the utility model, when the installation unit is formed by installation, the plurality of gear reduction assemblies are firstly installed and matched together outside the reduction gearbox in sequence through the connecting pieces and the connecting pieces, and then the installation unit is integrally installed in the reduction gearbox, so that the problem that the plurality of gear reduction assemblies are difficult to be installed and matched together one by one in the interior of the shell is avoided, and the installation is convenient.

The utility model provides a motor curtain transmission mechanism which comprises a reduction box body and at least two gear reduction assemblies, wherein the gear reduction assemblies are coaxially arranged in the reduction box body, the gear reduction assemblies are sequentially connected in a linkage mode, connecting pieces and connecting parts are respectively arranged at two ends of two adjacent gear reduction assemblies, the connecting pieces are rotatably matched with the connecting parts, the gear reduction assemblies are matched with the connecting parts through the connecting pieces to form an integral installation unit, and the installation unit is installed in the reduction box body.

Preferably, each gear reduction assembly comprises a planetary disc, a planetary wheel and a sun wheel, wherein the planetary wheel and the sun wheel are arranged on the planetary disc, the planetary wheel is meshed with the sun wheel, the end part of the sun wheel forms the connecting piece, the connecting part is arranged on the planetary disc corresponding to the adjacent gear reduction group, and the connecting part and the connecting piece are coaxially arranged.

Preferably, the connecting part is a groove on the planetary disc, which is matched with the connecting part, and when the gear reduction assembly forms an integral installation unit, the connecting part is inserted into the connecting part corresponding to the adjacent gear reduction group, and the outer peripheral wall of the connecting part is abutted against the inner wall of the connecting part.

Preferably, the gear reduction assembly comprises a first reduction assembly, a second reduction assembly and a third reduction assembly which are sequentially connected in a linkage way, the first reduction assembly comprises a first planetary disc, a first planetary wheel and a first sun wheel, the second reduction assembly comprises a second planetary disc, a second planetary wheel and a second sun wheel, and the third reduction assembly comprises a third planetary disc, a third planetary wheel and a third sun wheel;

the connecting piece is arranged at one end of the first sun gear, which is close to the second planetary disc, and one end of the second sun gear, which is close to the third planetary disc; the connecting part is arranged at one end of the second planetary disc, which is close to the first sun gear, and one end of the third planetary disc, which is close to the second sun gear;

the gear reduction assembly further comprises a coaxial positioning column arranged along the direction of the rotating shaft, the second planetary disc and the second planetary disc are both provided with positioning through holes, one end of the coaxial positioning column is connected with the third planetary disc, and the other end of the coaxial positioning column penetrates through the positioning through holes; the second planetary disc and the second planetary disc are rotatable about the coaxial positioning post.

Preferably, the gear reduction assembly further comprises a positioning shell sleeved outside the first reduction assembly, helical teeth matched with the first planet gears are arranged in the positioning shell, mounting convex strips are arranged on the outer peripheral wall of the positioning shell, and mounting grooves matched with the mounting convex strips are formed in the inner peripheral wall of the reduction box.

Preferably, the motor curtain transmission mechanism further comprises an output mechanism and an elastic plug bush, wherein one of the output mechanism and the reduction box body is plugged into the plug bush and in interference fit with the plug bush, and the other one of the output mechanism and the reduction box body is plugged out of the plug bush and in interference fit with the plug bush, so that the output mechanism and the reduction box body are relatively fixed.

Preferably, the motor curtain transmission mechanism further comprises a first limiting mechanism and a second limiting mechanism, and the reduction gearbox body is inserted into the plug bush and is limited to move along the axial direction by the first limiting mechanism; the output mechanism is inserted outside the plug bush and limited to move along the axial direction by the second limiting mechanism.

Preferably, the first limiting mechanism comprises a first limiting back-off arranged on the reduction gearbox body and a limiting step arranged on the inner side wall of the plug bush, and the first limiting back-off is matched with the limiting step to limit the reduction gearbox body and the plug bush to move along the axial direction; the second limiting mechanism comprises a limiting through hole arranged on the output mechanism and a second limiting back-off arranged on the outer side wall of the plug bush, and the two limiting back-off is matched with the limiting through hole to limit the output mechanism and the plug bush to move along the axial direction.

Preferably, the gear box body is close to the terminal surface of grafting cover one end on be equipped with along the bellied inner ring platform of terminal surface and along the bellied outer loop spacing platform of terminal surface, the inner ring platform with the coaxial setting of outer loop spacing platform, outer loop spacing platform is a plurality of and the interval encircles outside the inner ring platform, the grafting cover is equipped with spacing slot, the grafting cover when the inner ring platform is outside, outer loop spacing platform inserts in the spacing slot and cooperate with it, and restriction the grafting cover with the circumference rotation of gear box.

Preferably, a clamping hole is formed in one end, close to the power input end of the speed reduction assembly, of the speed reduction box body; the motor curtain transmission mechanism further comprises a driving motor, an elastic mounting seat and an elastic damping ring, wherein the driving motor is connected with the power input end of the speed reduction assembly, one end of the driving motor is provided with a clamping inverted buckle matched with the clamping hole, the other end of the driving motor is mounted in the mounting seat, the damping ring is sleeved outside the driving motor or the speed reduction box body, and the mounting seat and the damping ring are both more than the driving motor and the speed reduction box body and protrude outwards in the radial direction.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the utility model.

Fig. 1 is a schematic structural view of a curtain reducer according to an embodiment;

FIG. 2 is a cross-sectional view of a window covering decelerator;

FIG. 3 is a schematic diagram of the structure of the reduction gearbox, the plug bush and the output mechanism;

FIG. 4 is a schematic view of the plug wrap of FIG. 3 from another perspective;

FIG. 5 is a schematic diagram of the structure of the shock absorbing ring and the driving motor, and the structure of the reduction gearbox and the driving motor by the clamping reverse buckle and the clamping hole;

FIG. 6 is a schematic diagram of the structure of the reduction gearbox and the positioning shell matched with the installation groove through the installation convex strips;

fig. 7 is a schematic structural view of the mounting unit;

FIG. 8 is an exploded view of FIG. 7;

fig. 9 is a schematic diagram of a construction of the second planetary disc of fig. 8 from another perspective.

The attached drawings are identified: the driving motor 1 is clamped with the back-off 101; the speed reduction box body 2, a first limiting back-off 201, an inner ring table 202, an outer ring limiting table 203, a clamping hole 204 and a mounting groove 205; the mounting unit 3, the first reduction assembly 301, the second reduction assembly 302, the third reduction assembly 303, the connector 304, the connector 305, the first planetary disc 306, the first planetary wheel 307, the first sun wheel 308, the second planetary disc 309, the second planetary wheel 310, the second sun wheel 311, the third planetary disc 312, the third planetary wheel 313, the third sun wheel 314, the coaxial positioning post 315, the planetary positioning pin 316, the positioning housing 317, and the mounting ribs 318; an output mechanism 4 and a limit through hole 401; the device comprises a plug bush 5, a limiting step 501, a second limiting back-off 502 and a limiting slot 503; a mounting base 6; a damper ring 7; a first limiting mechanism a; and a second limiting mechanism b.

Detailed Description

In order that the utility model may be understood more fully, the utility model will be described with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model provides a curtain speed reducer which comprises a speed reduction box body 2 and at least two gear speed reduction assemblies, wherein the gear speed reduction assemblies are coaxially arranged in the speed reduction box body 2, the gear speed reduction assemblies are sequentially connected in a linkage mode, two ends of each two adjacent gear speed reduction assemblies are respectively provided with a connecting piece 304 and a connecting part 305, the connecting pieces 304 are rotatably matched with the connecting parts 305, the gear speed reduction assemblies are matched with the connecting parts 305 through the connecting pieces 304 to form an integral installation unit 3, and the installation unit 3 is installed in the speed reduction box body 2. When the installation unit 3 is formed, the plurality of gear reduction assemblies are firstly installed and matched together outside the reduction gearbox 2 in sequence through the connecting pieces 304 and the connecting pieces 304, and then the installation unit 3 is integrally installed in the reduction gearbox 2, so that the problem that the plurality of gear reduction assemblies are difficult to install and match together one by one in the inside of the shell is avoided.

In a preferred embodiment, each gear reduction assembly comprises a planetary disc, and a planetary wheel and a sun wheel which are arranged on the planetary disc, wherein the planetary wheel is meshed with the sun wheel, the end part of the sun wheel forms the connecting piece 304 so as to save materials and space, the connecting part 305 is arranged on the planetary disc corresponding to the adjacent gear reduction group, and the connecting part 305 and the connecting piece 304 are coaxially arranged so as to save space and keep the transmission at the same axle center. Further, the connection portion 305 is a groove on the planetary disc, which is matched with the connection member 304, and the groove is disposed on the axis of the planetary disc. The connecting piece 304 at the end part of the sun gear is abutted in the groove, and the diameter of the connecting piece 304 is equal to the diameter of the groove; or the connecting piece 304 has certain elasticity, and the diameter of the connecting piece 304 is slightly larger than that of the groove, so that the connecting piece 304 is ensured to be firmly fixed when being inserted into the corresponding groove.

In a preferred embodiment, the gear reduction assembly further includes a coaxial positioning column 315 disposed along the rotation axis direction, the second planetary plate 309 and the second planetary plate 309 are both provided with positioning through holes, one end of the coaxial positioning column 315 is connected with the third planetary plate 312 (both may be integrally formed in advance), and the other end passes through the positioning through holes; the second planetary plate 309 and the second planetary plate 309 are rotatable about a coaxial positioning post 315. The coaxial positioning column 315 reduces the noise caused by gears, and when the gear reducer is used, if each group of sun teeth are not connected by the coaxial positioning column 315, each gear reducer is easy to be in disorder, and the gear reducer is S-shaped and swings in the reduction gearbox 2 to operate, so that the noise is high.

In a preferred embodiment, the gear reduction assembly further includes a positioning housing 317 sleeved outside the first reduction assembly 301, oblique teeth matched with the first planet gears 307 are disposed in the positioning housing 317, a mounting protruding strip 318 is disposed on an outer peripheral wall of the positioning housing 317, and a mounting groove 205 matched with the mounting protruding strip 318 is disposed on an inner peripheral wall of the reduction gearbox 2. The cooperation between the mounting groove 205 and the mounting protruding strip 318 provides a positioning function for the installation between the positioning casing 317 and the reduction gearbox 2, and simultaneously avoids the relative rotation between the positioning casing 317 and the reduction gearbox 2 during the operation of the first reduction assembly 301.

When the mounting unit 3 is formed by mounting: the first planet disk 306 comprises a first bracket and a second bracket, the first sun gear 308 is mounted on a central shaft of the first bracket (the first bracket and the second bracket can be integrally formed in advance), the three first planet gears 307 are sequentially mounted on a planet positioning pin 316 of the second bracket, the first bracket and the second bracket are fixedly connected through a connecting column and a connecting groove, and then the first bracket and the second bracket are mounted in a positioning shell 317 together; the three second planet gears 310 are sequentially arranged on the planet positioning pins 316 of the second planet gears 309, the second sun gear 311 is arranged on the central shaft of the second bracket (the two can be integrally formed in advance), and then a connecting piece 304 at the end part of the second sun gear 311 is inserted into a connecting part 305 on the second planet gears 310 to complete the installation of the first speed reduction assembly 301 and the second speed reduction assembly 302; then, three third planetary gears 313 are sequentially installed on the planetary positioning pins 316 of the third planetary gear disc 312, the third sun gear 314 is installed on the central shaft of the second planetary gear disc 309 (both can be integrally formed in advance), the connecting piece 304 on the third sun gear 314 is inserted into the connecting part 305 on the second planetary gear 310 to complete the installation of the third speed reduction assembly 303 and the second speed reduction assembly 302, and the other sequential steps are completed to match the first speed reduction assembly 301, the second speed reduction assembly 302 and the third speed reduction assembly 303 to form an integral installation unit 3.

In a preferred embodiment, the curtain speed reducer further comprises an output mechanism 4 and an elastic plug bush 5, wherein one of the output mechanism 4 and the speed reduction box body 2 is plugged into the plug bush 5 and is in interference fit with the plug bush 5, and the other is plugged out of the plug bush 5 and is in interference fit with the plug bush 5, so that the output mechanism 4 and the speed reduction box body 2 are relatively fixed. The output mechanism 4 and the reduction gearbox 2 may be made of elastic plastic parts. When in use, the output mechanism 4 and the reduction gearbox 2 are respectively fixed on the plug bush 5 in a plug-in mode, and the output mechanism and the reduction gearbox are fixedly connected with each other in reality; and the distribution is closely and firmly connected through the interference fit reality three, and simple to operate and installation time are short.

In a preferred embodiment, the curtain speed reducer further comprises a first limiting mechanism a and a second limiting mechanism b, the speed reducing box body 2 is inserted into the plug bush 5, and the speed reducing box body 2 and the plug bush 5 are limited to move along the axial direction by the first limiting mechanism a; the output mechanism 4 is inserted outside the plug bush 5, and the output mechanism 4 and the plug bush 5 are limited to move along the axial direction by the second limiting mechanism b. In some embodiments, the first limiting mechanism a and the second limiting mechanism b may be mounted in a manner of a buckle and a slot, and the following manner may be adopted.

In a preferred embodiment, the first limiting mechanism a includes a first limiting back-off 201 disposed on the reduction gearbox 2 and a limiting step 501 disposed on an inner side wall of the plug bush 5, where the first limiting back-off 201 cooperates with the limiting step 501 to limit the reduction gearbox 2 and the plug bush 5 to move along an axial direction, so as to further strengthen the connection between the reduction gearbox 2 and the plug bush 5 and prevent the reduction gearbox 2 and the plug bush from being separated from each other. The second limiting mechanism b comprises a limiting through hole 401 arranged on the output mechanism 4 and a second limiting back-off 502 arranged on the outer side wall of the plug bush 5, and the two limiting back-off and the limiting through hole 401 are matched to limit the output mechanism 4 to move with the plug bush 5 along the axial direction so as to further strengthen the connection of the output mechanism 4 and the plug bush 5 and prevent the output mechanism from being separated from the plug bush 5.

In a preferred embodiment, the end surface of the reduction gearbox body 2 near one end of the plugging sleeve 5 is provided with an inner annular table 202 protruding along the end surface and an outer annular limiting table 203 protruding along the end surface, the inner annular table 202 and the outer annular limiting table 203 are coaxially arranged, the outer annular limiting tables 203 are multiple and surround the inner annular table 202 at intervals, the plugging sleeve 5 is provided with a limiting slot 503, the limiting slot 503 is close to one side of the reduction gearbox body 2, and when the plugging sleeve 5 is arranged outside the inner annular table 202, the outer annular limiting table 203 is inserted into and matched with the limiting slot 503, and limits the circumferential rotation of the plugging sleeve 5 and the reduction gearbox, so that the plugging sleeve 5 and the reduction gearbox are further reinforced to prevent the reduction gearbox body 2 from rotating relative to the plugging sleeve 5.

In a preferred embodiment, a clamping hole 204 is formed at one end of the reduction box 2 near the power input end of the reduction assembly; the curtain speed reducer further comprises a driving motor 1, an elastic mounting seat 6 and an elastic damping ring 7, wherein the driving motor 1 is connected with a power input end of the speed reducing assembly, one end of the driving motor 1 is provided with a clamping back-off 101 matched with the clamping hole 204, the other end of the driving motor is mounted in the mounting seat 6, and the mounting seat 6 and the damping ring 7 are both protruded outwards in the radial direction compared with the driving motor 1 and the speed reducing box body 2. The driving motor 1 and the reduction gearbox 2 are quickly installed through the matching of the clamping holes 204 and the clamping back-off 101. The elastic mounting seat 6 and the elastic damping ring 7 are matched to realize the effects of damping and noise reduction.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description of the terms "preferred embodiment," "further embodiment," "other embodiments," or "specific examples," etc., 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (10)

1. The utility model provides a motor curtain drive mechanism, its characterized in that, motor curtain drive mechanism includes reduction box and two at least gear reduction assemblies, gear reduction assemblies all coaxial arrangement is in the reduction box, gear reduction assemblies links in proper order and connects, and the both ends of two adjacent gear reduction assemblies are equipped with connecting piece and connecting portion respectively, the connecting piece rotationally cooperatees with connecting portion, gear reduction assemblies passes through connecting piece and connecting portion cooperate and form an holistic installation unit, the installation unit install in the reduction box.

2. A motor window covering transmission mechanism according to claim 1, wherein each gear reduction assembly comprises a planetary disc, a planetary wheel and a sun wheel, wherein the planetary wheel is arranged on the planetary disc and meshed with the sun wheel, the end part of the sun wheel forms the connecting piece, the connecting part is arranged on the planetary disc corresponding to the adjacent gear reduction group, and the connecting part and the connecting piece are coaxially arranged.

3. The motor window shade transmission mechanism of claim 2, wherein the connecting portion is a groove on the planetary plate, which is matched with the connecting member, and when the gear reduction assembly forms an integral installation unit, the connecting member is inserted into the connecting portion corresponding to the adjacent gear reduction group, and the outer peripheral wall of the connecting member abuts against the inner wall of the connecting portion.

4. The motor window shade transmission mechanism of claim 3, wherein the gear reduction assembly comprises a first reduction assembly, a second reduction assembly and a third reduction assembly which are sequentially connected in a linkage manner, the first reduction assembly comprises a first planetary disc, a first planetary wheel and a first sun wheel, the second reduction assembly comprises a second planetary disc, a second planetary wheel and a second sun wheel, and the third reduction assembly comprises a third planetary disc, a third planetary wheel and a third sun wheel;

the connecting piece is arranged at one end of the first sun gear, which is close to the second planetary disc, and one end of the second sun gear, which is close to the third planetary disc; the connecting part is arranged at one end of the second planetary disc, which is close to the first sun gear, and one end of the third planetary disc, which is close to the second sun gear;

the gear reduction assembly further comprises a coaxial positioning column arranged along the direction of the rotating shaft, the second planetary disc and the second planetary disc are both provided with positioning through holes, one end of the coaxial positioning column is connected with the third planetary disc, and the other end of the coaxial positioning column penetrates through the positioning through holes; the second planetary disc and the second planetary disc are rotatable about the coaxial positioning post.

5. The motor window covering transmission mechanism of claim 4, wherein the gear reduction assembly further comprises a positioning shell sleeved outside the first reduction assembly, helical teeth matched with the first planet gears are arranged in the positioning shell, mounting protruding strips are arranged on the outer peripheral wall of the positioning shell, and mounting grooves matched with the mounting protruding strips are formed on the inner peripheral wall of the reduction box.

6. The motorized window treatment of claim 1, further comprising an output mechanism and an elastic socket, wherein one of the output mechanism and the reduction box is inserted into and interference fit with the socket, and the other is inserted out of and interference fit with the socket, such that the output mechanism and the reduction box are fixed relative to each other.

7. The motor window shade transmission mechanism of claim 6, further comprising a first limit mechanism and a second limit mechanism, wherein the reduction box body is inserted into the insertion sleeve and the reduction box body and the insertion sleeve are limited to move along the axial direction by the first limit mechanism; the output mechanism is inserted outside the plug bush and limited to move along the axial direction by the second limiting mechanism.

8. The motor window covering transmission mechanism according to claim 7, wherein the first limiting mechanism comprises a first limiting back-off arranged on the reduction gearbox body and a limiting step arranged on the inner side wall of the plug bush, and the first limiting back-off is matched with the limiting step to limit the reduction gearbox body and the plug bush to move along the axial direction; the second limiting mechanism comprises a limiting through hole arranged on the output mechanism and a second limiting back-off arranged on the outer side wall of the plug bush, and the two limiting back-off is matched with the limiting through hole to limit the output mechanism and the plug bush to move along the axial direction.

9. The motor curtain transmission mechanism as claimed in claim 8, wherein an inner ring table protruding along the end surface and an outer ring limit table protruding along the end surface are arranged on the end surface of the reduction box body, which is close to one end of the plug bush, the inner ring table and the outer ring limit table are arranged coaxially, the outer ring limit tables are a plurality of and surround the inner ring table at intervals, the plug bush is provided with limit slots, and when the plug bush is arranged outside the inner ring table, the outer ring limit table is inserted into and matched with the limit slots, and the circumferential rotation of the plug bush and the reduction box is limited.

10. The motor curtain transmission mechanism as claimed in claim 1, wherein one end of the reduction box body, which is close to the power input end of the reduction assembly, is provided with a clamping hole; the motor curtain transmission mechanism further comprises a driving motor, an elastic mounting seat and an elastic damping ring, wherein the driving motor is connected with the power input end of the speed reduction assembly, one end of the driving motor is provided with a clamping inverted buckle matched with the clamping hole, the other end of the driving motor is mounted in the mounting seat, the damping ring is sleeved outside the driving motor or the speed reduction box body, and the mounting seat and the damping ring are both more than the driving motor and the speed reduction box body and protrude outwards in the radial direction.