CN115765298A - Driving mechanism of electric curtain - Google Patents

Abstract

The invention relates to a driving mechanism of an electric curtain shield, which is connected with two ends of a cloth curtain side rod of a cloth curtain component through two transmission wires of a transmission wire group, and comprises a motor group and a rotary driver driven by the motor group, wherein the rotary driver is sleeved with a first wire wheel and a second wire wheel on a transmission shaft, the first wire wheel and the second wire wheel are respectively connected with the two transmission wires to drive the cloth curtain to be unfolded and folded, a forward rotation buffer part is arranged between the transmission shaft and the first wire wheel, and a reverse rotation buffer part is arranged between the transmission shaft and the second wire wheel, therefore, when the motor group drives the transmission shaft to rotate forward or reversely, the transmission shaft respectively winds the transmission wires and releases the other transmission wire through the forward rotation buffer part and the reverse rotation buffer part, and the two transmission wires are enabled to operate coordinately and balancedly by using the buffer elasticity when the forward rotation buffer part or the reverse rotation buffer part rotates, thereby increasing the smoothness and the smoothness of the unfolding and folding actions of the cloth curtain.

Description

Driving mechanism of electric curtain

Technical Field

The invention relates to an electric curtain, in particular to a driving mechanism for driving curtain cloth to unfold and fold in the electric curtain.

Background

Motorized shades currently used in motor vehicles to provide shade functions in the storage space include a shade assembly, a drive mechanism, and a flexible pull cord set. The curtain assembly comprises two guide rails, a curtain retractor and a curtain which can be pulled out, unfolded and folded from the curtain retractor, the two guide rails are provided with left and right opposite side walls of an object placing space of the motor vehicle, the curtain retractor is arranged on the front side of the object placing space of the motor vehicle, and a pull rod of the curtain extending out of the curtain retractor can slide along the two guide rails respectively.

The traction wire group is provided with two traction wires, wherein the two traction wires are respectively connected with two ends of a pull rod of the cloth curtain extending into the two guide rails, the driving mechanism comprises a motor group and a wire winding wheel which can be driven by the motor group, and the motor group can drive the cloth curtain to be unfolded and folded through the wire winding wheel and the traction wire group by synchronously winding the traction wires and releasing the other traction wire through the wire winding wheel.

Although the conventional electric curtain shade can utilize the winding wheel driven by the motor group in the electric driving mechanism to simultaneously wind the traction wire and release the other traction wire to drive the pull rod of the curtain shade to move along the two guide rails, so as to unfold and fold the curtain shade, the driving mechanism of the conventional electric curtain shade synchronously winds the traction wire and releases the other traction wire by using a single winding wheel, and in the process of synchronously releasing and winding the two traction wires by using the winding wheel, because the driving mechanism does not have a buffer mechanism in the related mechanisms of the winding and releasing actions, the coordinated and balanced operation effect on the actions of winding the traction wire and releasing the other traction wire is difficult to generate, so that the pull rod of the curtain shade moves between the two guide rails and is easy to deflect, thereby causing the problem of unsmooth actions.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the driving mechanism of the prior electric curtain shade has the problem that the side rod of the cloth curtain moves between two guide rails and is easy to incline, thus causing unsmooth action because the single winding wheel driven by a motor group is difficult to operate in a coordinated and balanced way in the process of synchronously releasing and winding two transmission wires.

The technical solution proposed by the invention is as follows: the utility model provides an electronic actuating mechanism who hides thing curtain, its limit pole left and right sides through the cloth curtain of a cloth curtain subassembly is connected to two transmission wires of a transmission wire group, and this actuating mechanism includes a motor group and connects a rotary actuator of the drive shaft of this motor group to connect these two transmission wires with this rotary actuator, this motor group can be by this rotary actuator synchronous drive this cloth curtain of drive wire drive expandes to receive, and this rotary actuator includes a transmission shaft, a first line wheel, a second line wheel, a just buffering part and a contrary buffering part of revolving, wherein:

the transmission shaft is arranged at one end of the driving shaft of the motor group;

the first wire wheel and the second wire wheel are sleeved on the transmission shaft and are arranged along the axial direction of the transmission shaft, the inner circumferential wall of the first wire wheel and the inner circumferential wall of the second wire wheel respectively have an accommodating space with the outer circumferential wall of the transmission shaft, and the first wire wheel and the second wire wheel are respectively connected with the two transmission wires;

the positive rotation buffer component is arranged in an accommodating space between the outer peripheral wall of the transmission shaft and the inner peripheral wall of the first wire wheel and connected with the transmission shaft and the first wire wheel, and the negative rotation buffer component is arranged in an accommodating space between the outer peripheral wall of the transmission shaft and the inner peripheral wall of the second wire wheel and connected with the transmission shaft and the second wire wheel.

In the above-mentioned driving mechanism of the electric object covering curtain, the forward rotation buffer member and the backward rotation buffer member are members for providing buffer elasticity in opposite rotation directions, and the forward rotation buffer member and the backward rotation buffer member are arranged at intervals along the axial direction of the transmission shaft.

In the above-mentioned driving mechanism of the electric curtain, the forward rotation buffer component and the reverse rotation buffer component are torsion springs with opposite rotation directions, two ends of the forward rotation buffer component different from the reverse rotation buffer component are respectively an axle connecting end and a wheel connecting end, the axle connecting end of the forward rotation buffer component is connected with the transmission shaft, the wheel connecting end of the forward rotation buffer component is connected with the first wire wheel, the axle connecting end of the reverse rotation buffer component is connected with the transmission shaft, the wheel connecting end of the reverse rotation buffer component is connected with the second wire wheel, the peripheral surface of the first wire wheel and the peripheral surface of the second wire wheel are both provided with wire winding grooves, and the two transmission wires can be respectively wound around the wire winding grooves of the first wire wheel and the wire winding grooves of the second wire wheel.

In the driving mechanism of the electric blind, the outer peripheral wall of the transmission shaft is provided with a positioning concave part or two positioning concave parts extending axially, and the shaft connection end of the forward rotation buffer component and the shaft connection end of the reverse rotation buffer component are arranged in the positioning concave part of the transmission shaft; the inner peripheral surface of the first wire wheel and the inner peripheral surface of the second wire wheel are provided with at least one positioning groove extending axially, the wheel connecting end of the forward rotation buffering component is arranged in the positioning groove of the first wire wheel, and the wheel connecting end of the reverse rotation buffering component is arranged in the positioning groove of the second wire wheel.

In the above driving mechanism of the electric object covering curtain, the transmission shaft is detachably connected to the driving shaft, one end of the transmission shaft is a pivot joint end, the other end of the transmission shaft is provided with a baffle part extending radially, the baffle part is positioned on one side of the first wire wheel far away from the second wire wheel, the pivot joint end extends out of the outer side of the second wire wheel, the rotary driver is provided with a wire wheel housing, the wire wheel housing is sleeved on the outer sides of the first wire wheel and the second wire wheel, the wire wheel housing is fixedly arranged on the motor group, the pivot joint end of the transmission shaft is pivoted in the wire wheel housing, and the two transmission wires of the transmission wire group are respectively connected with the first wire wheel and the second wire wheel through the wire wheel housing.

In the driving mechanism of the electric object covering curtain, the reel cover has two wire guiding parts extending towards different directions, one of the two wire guiding parts is located in a tangential direction of the first reel, the other wire guiding part is located in a tangential direction of the second reel, and the two wire guiding parts respectively provide the two transmission wires for passing through.

When the driving mechanism is applied to the electric curtain, the driving mechanism has the advantages that the transmission shaft of the rotary driver connected with the motor group is combined with the forward rotation buffer part to be connected with the first wire wheel, the transmission shaft is combined with the reverse rotation buffer part to be connected with the second wire wheel, the first wire wheel and the second wire wheel are respectively connected with the two transmission wires of the transmission wire group, and the forward rotation buffer part and the reverse rotation buffer part are utilized to respectively provide buffer elasticity when the motor group drives the transmission shaft to rotate forward and reverse, wherein when the motor group drives the transmission shaft to rotate forward, the transmission shaft drives the first wire wheel to rotate through the forward rotation buffer part to wind the transmission wires, and simultaneously, the transmission shaft drives the second wire wheel to rotate through the reverse rotation buffer part to release the other transmission wires to ensure that the curtain is unfolded, the time for applying force to the transmission wires is properly delayed through the buffer elasticity of the forward rotation buffer part, the elastic energy is accumulated, and the transmission wires behind the first wire initially provide larger torsion force to be matched with the reverse rotation buffer part to immediately release the action of the other transmission wires, so as to coordinately and run in a balanced way. When the motor group drives the transmission shaft to rotate reversely, the smoothness and the stationarity of the unfolding and folding actions of the cloth curtain can be effectively improved by analogy.

The forward rotation buffering part and the reverse rotation buffering part in the driving mechanism of the present invention are torsion springs in opposite rotation directions, the outer peripheral wall of the driving shaft is provided with axially extending positioning concave parts, the shaft connecting end of the forward rotation buffering part and the shaft connecting end of the reverse rotation buffering part are installed in the positioning concave parts of the driving shaft, the inner peripheral surface of the first reel and the inner peripheral surface of the second reel are both provided with axially extending positioning grooves, the wheel connecting end of the forward rotation buffering part is installed in the positioning groove of the first reel, the wheel connecting end of the reverse rotation buffering part is installed in the positioning groove of the second reel, and the convenience in assembling the shaft connecting end and the wheel connecting end of the forward rotation buffering part and the reverse rotation buffering part with the driving shaft, the first reel and the second reel is improved by the structures of the axially extending positioning concave parts, the positioning grooves, etc.

The driving mechanism can further cover the wire wheel housing on the outer sides of the first wire wheel and the second wire wheel by the rotary driver, the wire wheel housing is fixedly arranged on the motor group, the baffle at one end of the transmission shaft is positioned on the outer side of the first wire wheel, and the pivoting end at the other end of the transmission shaft extends out of the second wire wheel and is pivoted in the wire wheel housing, so that when the motor group drives the transmission shaft, the transmission shaft can stably drive the first wire wheel and the second wire wheel to respectively wind or release a transmission lead through the forward rotation buffer component and the reverse rotation buffer component.

The driving mechanism of the invention can also be further provided with two wire guiding parts extending towards different directions on the wire wheel housing, one of the two wire guiding parts is positioned in the tangential direction of the first wire wheel, the other wire guiding part is positioned in the tangential direction of the second wire wheel, and the two wire guiding parts are used for respectively providing the two transmission wires to pass through, thereby combining the wire winding grooves of the first wire wheel and the second wire wheel, so that when the first wire wheel and the second wire wheel respectively wind or release the transmission wires, the smoothness of the transmission wires during movement is improved, and the wires are prevented from being wound.

Drawings

Fig. 1 is a reference diagram of a driving mechanism of an electric object covering curtain according to a preferred embodiment of the present invention applied to an electric object covering curtain.

Fig. 2 is a reference view of a preferred embodiment of the drive mechanism of fig. 1 in use from another perspective in a motorized shade.

Fig. 3 is a partial perspective view of the preferred embodiment of the drive mechanism shown in fig. 1 and 2.

Fig. 4 is a partially exploded perspective view of the preferred embodiment of the drive mechanism shown in fig. 3.

Fig. 5 is an exploded isometric view of the preferred embodiment of the drive mechanism shown in fig. 3.

Fig. 6 is a partial end plan view of the preferred embodiment of the drive mechanism shown in fig. 3.

Description of reference numerals:

1: cloth curtain assembly

10: guide rail

101: guide part

11: cloth curtain winding apparatus

12: cloth curtain

121: side rod

122: guide part

2: driving mechanism

20: motor set

21: motor with a stator having a stator core

22: speed reducer

23: drive shaft

30: rotary drive

31: transmission shaft

311: shaft part

312: baffle part

313: pin joint end

314: positioning concave part

32: first reel

320: winding ditch

321: locating slot

33: second reel

330: winding groove

331: locating slot

34: forward rotation buffer component

341: shaft joint end

342: wheel joint end

35: reverse rotation buffer component

351: shaft joint end

352: wheel connecting end

36: reel cover

361: wire guide

362: wire guide

40: transmission wire group

41: transmission conducting wire

42: transmission conducting wire

43: the conducting wire is linked.

Detailed Description

The technical solutions adopted by the present invention to achieve the predetermined objects are further described below with reference to the accompanying drawings and preferred embodiments of the present invention.

Referring to fig. 1 and 2, a preferred embodiment of the driving mechanism 2 for an electric blind according to the present invention is shown in a reference view of an electric blind in use. The driving mechanism 2 is used for combining with a cloth curtain component 1 to form an electric object shielding curtain which can be arranged in an object placing space of a motor vehicle and provides a shielding function. Wherein:

as shown in fig. 1 and 2, the fabric curtain assembly 1 includes two guide rails 10, a fabric curtain retractor 11 and a fabric curtain 12 that can be drawn out, unfolded and folded from the fabric curtain retractor 11, the two guide rails 10 are installed on the left and right opposite side walls of the storage space of the motor vehicle and extend in the front-back direction, in the electric fabric curtain disclosed in fig. 1, the front ends of the two guide rails 10 respectively have a guiding portion 101, the fabric curtain retractor 11 is a component having the function of automatically retracting the fabric curtain 12, the fabric curtain retractor 11 is an existing product, and the detailed structure thereof is not described herein again. The fabric curtain retractor 11 can be installed at the front side of the storage space of the motor vehicle, and the side rod 121 of the fabric curtain 12 extending out of the fabric curtain retractor 11 has two guiding portions 122 capable of sliding along the two guide rails 10 respectively, so that the fabric curtain 12 can be unfolded and folded smoothly, and when the fabric curtain 12 is unfolded, the two guide rails 10 are used for supporting the side rod 121 of the fabric curtain 12 together.

As shown in fig. 1 to 5, the driving mechanism 2 of the present invention includes a transmission line set 40, a motor set 20 and a rotary driver 30, wherein:

as shown in fig. 1 to 3, the transmission wire set 40 includes two flexible transmission wires 41 and 42 and a flexible linking wire 43, wherein one of the transmission wires 41 extends into one of the guide rails 10 and is connected to the rear side of the guide portion 122 at one end of the side bar 121 of the curtain, the front side of the guide portion 122 is connected to the linking wire 43, the linking wire 43 bypasses the guide portion 101 at the front end of the guide rail 10 and extends into the rear end of the other guide rail 10 and is connected to the rear side of the guide portion 122 at the other end of the side bar 121 of the curtain 12, one end of the other transmission wire 42 is connected to the front side of the guide portion 122 at the other end of the side bar 121 and extends out by bypassing the guide portion 101 at the front end of the other guide rail 10, and the other end of the two transmission wires 41 and 42 is connected to the rotary driver 30, and length adjusters may be further installed in the transmission wires 41 and 42 and the linking wire 43 to adjust the lengths of the transmission wires 41 and 42 and the linking wire 43.

As shown in fig. 3 to 5, the motor assembly 20 is controlled by a control system or a switch in the motor vehicle, and the motor assembly 20 includes a driving shaft 23 capable of being controlled to rotate, generally, the motor assembly 20 includes a motor 21 and a reducer 22 connected to the motor 21, the driving shaft 23 is a rotation power output component of the reducer 22, the motor assembly 20 is a conventional product, and detailed construction thereof is not described herein again.

As shown in fig. 3 to 5, the rotary driver 30 is connected to the driving shaft 23 of the motor set 20 and to the two transmission wires 41 and 42 of the transmission wire set 40, so that the motor can synchronously drive the two transmission wires 41 and 42 through the rotary driver 30 to perform the operation of driving the cloth curtain to open and close. The rotary drive 30 includes a transmission shaft 31, a first pulley 32, a second pulley 33, a forward rotation damping member 34, and a reverse rotation damping member 35. Wherein:

as shown in fig. 4 to 5, the transmission shaft 31 is disposed at one end of the driving shaft 23 of the motor assembly 20, and the transmission shaft 31 may be a single-piece component with the driving shaft 23, or, as shown in the preferred embodiment, the transmission shaft 31 and the driving shaft 23 are two separate components, and the transmission shaft 31 is detachably connected to one end of the driving shaft 23.

As shown in fig. 5, in the preferred embodiment, the transmission shaft 31 has a shaft portion 311, one end of the shaft portion 311 is a pivot end 313, the other end of the shaft portion 311 of the transmission shaft 31 has a radially extending baffle portion 312, the baffle portion 312 is located at one end adjacent to the motor set 20, and the outer peripheral wall of the transmission shaft 31 is provided with an axially extending positioning recess 314 or two positioning recesses 314.

As shown in fig. 4 to fig. 6, the first pulley 32 and the second pulley 33 are sleeved on the transmission shaft 31 and are arranged along the axial direction of the transmission shaft 31, the inner circumferential wall of the first pulley 32 and the inner circumferential wall of the second pulley 33 and the outer circumferential wall of the transmission shaft 31 respectively have an accommodating space, one of the two transmission wires 41, 42 is connected to the first pulley 32, and the other transmission wire 42 is connected to the second pulley 33. In the preferred embodiment, the first pulley 32 is located at a section of the transmission shaft 31 adjacent to the motor unit 20 and at a side of the baffle portion 312, the second pulley 33 is located at a section of the transmission shaft 31 away from the motor unit 20, and the pivoting end 313 of the transmission shaft 31 extends out of the second pulley 33.

As shown in fig. 4 and 5, in the preferred embodiment, the winding grooves 320 and 330 are formed on the outer circumferential surface of the first pulley 32 and the outer circumferential surface of the second pulley 33, and the two transmission wires 41 and 42 can be wound around the winding groove 320 of the first pulley 32 and the winding groove 330 of the second pulley 33, respectively, so that the two transmission wires 41 and 42 can be wound around the first pulley 32 and the second pulley 33 smoothly. In the preferred embodiment, the inner circumferential surface of the first pulley 32 and the inner circumferential surface of the second pulley 33 are both provided with at least one positioning groove 321, 331 extending in the axial direction.

As shown in fig. 4 and 6, the forward rotation buffer component 34 is disposed in the accommodating space between the outer peripheral wall of the transmission shaft 31 and the inner peripheral wall of the first pulley 32 and is connected to the transmission shaft 31 and the first pulley 32, the reverse rotation buffer component 35 is disposed in the accommodating space between the outer peripheral wall of the transmission shaft 31 and the inner peripheral wall of the second pulley 33 and is connected to the transmission shaft 31 and the second pulley 33, the forward rotation buffer component 34 and the reverse rotation buffer component 35 are arranged at intervals along the axial direction of the transmission shaft 31, and the transmission shaft 31 driven to rotate drives the first pulley 32 to rotate through the forward rotation buffer component 34 and the second pulley 33 to rotate through the reverse rotation buffer component 35, so as to drive the two transmission wires 41 and 42 synchronously through the first pulley 32 and the second pulley 33.

As shown in fig. 5, in the driving mechanism 2, the forward rotation buffering member 34 and the reverse rotation buffering member 35 are members providing buffering elasticity in opposite rotation directions, in the preferred embodiment, the forward rotation buffering member 34 and the reverse rotation buffering member 35 are torsion springs in opposite rotation directions, two ends of the forward rotation buffering member 34 different from the reverse rotation buffering member 35 are respectively a connection end 341, 351 and a wheel connection end 342, 352, the connection end 341 of the forward rotation buffering member 34 is installed in the positioning recess 314 of the transmission shaft 31, the wheel connection end 342 of the forward rotation buffering member 34 is installed in the positioning groove 321 of the first pulley 32, the connection end 351 of the reverse rotation buffering member 35 is installed in the positioning recess 314 of the transmission shaft 31, and the wheel connection end 352 of the reverse rotation buffering member 35 is installed in the positioning groove 331 of the second pulley 33. The axial connection ends 341 and the wheel connection ends 342 and the axial connection ends 351 and the wheel connection ends 352 of the forward rotation damping member 34 and the reverse rotation damping member 35 are respectively assembled with the transmission shaft 31, the first spool 32 and the second spool 33 by the structures of the positioning concave portion 314 and the positioning grooves 321 and 331 which extend axially.

As shown in fig. 3 to 5, the rotary driver 30 may further include a pulley housing 36, the pulley housing 36 is sleeved outside the first pulley 32 and the second pulley 33, the pulley housing 36 is fixed on the motor assembly 20, and the two transmission wires 41 and 42 of the transmission wire assembly 40 are respectively connected to the first pulley 32 and the second pulley 33 through the pulley housing 36. In the preferred embodiment, the pivot end 313 of the transmission shaft 31 is pivotally disposed on the sidewall of the pulley housing 36, so that the end of the transmission shaft 31 assembled on the driving shaft 23 of the motor assembly 20 is supported by the pulley housing 36, and the first pulley 32 and the second pulley 33 can be smoothly driven to rotate.

As shown in fig. 3 to 6, in the preferred embodiment, the pulley housing 36 has two wire guiding portions 361 and 362 extending in different directions, one of the two wire guiding portions 361 and 362 is located in a tangential direction of the first pulley 32, the other wire guiding portion 362 is located in a tangential direction of the second pulley 33, and the two wire guiding portions 361 and 362 respectively provide the two transmission wires 41 and 42 to pass through, so as to improve the smoothness of the transmission wires 41 and 42 passing through the pulley housing 36 and avoid winding.

When the driving mechanism 2 of the present invention is applied to an electric curtain, as shown in fig. 1 to 4, the driving mechanism 2 utilizes the driving shaft 23 of the motor assembly 20 to drive the transmission shaft 31 of the rotary driver 30, the forward rotation buffer component 34 drives the first pulley 32, and the reverse rotation buffer component 35 drives the second pulley 33, so that the first pulley 32 and the second pulley 33 respectively drive the two transmission wires 41 and 42 of the transmission wire assembly 40 to perform winding and unwinding actions, thereby unfolding or folding the curtain 12.

As shown in fig. 1 to 5, the driving mechanism 2 of the present invention mainly utilizes a combination structure that the transmission shaft 31 is respectively connected with the forward rotation buffering component 34 and the first pulley 32, and is connected with the reverse rotation buffering component 35 and the second pulley 33, and the first pulley 32 and the second pulley 33 are respectively connected with the two transmission wires 41 and 42 of the transmission wire set 40, and utilizes the forward rotation buffering component 34 and the reverse rotation buffering component 35 to respectively provide buffering elasticity when the motor set 20 drives the transmission shaft 31 to rotate forward and reverse, so as to promote the smoothness of the unfolding and folding actions of the cloth curtain 12. When the motor unit 20 drives the transmission shaft 31 to rotate in the forward direction, the driven transmission shaft 31 drives the first pulley 32 to rotate through the forward rotation buffering member 34 to wind one transmission wire 41, and simultaneously the transmission shaft 31 drives the second pulley 33 to rotate through the reverse rotation buffering member 35 to release the other transmission wire 42 to unfold the cloth curtain, the buffering elasticity of the forward rotation buffering member 34 appropriately delays the time of applying force to the transmission wire 41, and elastic energy is accumulated, so that the transmission wire 41 is pulled continuously by the first pulley 32 to provide a larger torque force initially, and then the reverse rotation buffering member instantly releases the action of the other transmission wire 42, and the force is transmitted through the linkage wire 43 connected between the two ends of the side rod 121 of the cloth curtain 12, so that the motions of the two ends of the side rod 121 of the cloth curtain 12 in the two guide rails 10 can be coordinated and balanced, and the translational motion of the side rod 121 of the cloth curtain 12 between the two guide rails 10 can be promoted. When the motor unit 20 drives the transmission shaft 31 to rotate reversely, the smoothness and the smoothness of the unfolding and folding actions of the cloth curtain 12 can be effectively improved.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (6)

1. The utility model provides an electronic actuating mechanism who hides thing curtain, its limit pole left and right sides that connects the cloth curtain of a cloth curtain subassembly through two transmission wires of a transmission wire group, this actuating mechanism includes a motor group and a rotary actuator who connects the drive shaft of this motor group to connect these two transmission wires with this rotary actuator, this motor group can be by this rotary actuator synchronous drive the transmission wire drives this cloth curtain and expandes to close its characterized in that:

this rotary actuator includes a transmission shaft, a first line wheel, a second line wheel, a forward rotation buffering part and a contrary buffering part of revolving, wherein:

the transmission shaft is arranged at one end of the driving shaft of the motor group;

the first wire wheel and the second wire wheel are sleeved on the transmission shaft and are arranged along the axial direction of the transmission shaft, the inner peripheral wall of the first wire wheel and the inner peripheral wall of the second wire wheel are respectively provided with an accommodating space with the outer peripheral wall of the transmission shaft, and the first wire wheel and the second wire wheel are respectively connected with the two transmission wires;

the positive rotation buffer component is arranged in an accommodating space between the outer peripheral wall of the transmission shaft and the inner peripheral wall of the first wire wheel and connected with the transmission shaft and the first wire wheel, and the negative rotation buffer component is arranged in an accommodating space between the outer peripheral wall of the transmission shaft and the inner peripheral wall of the second wire wheel and connected with the transmission shaft and the second wire wheel.

2. The driving mechanism of electric sunshade according to claim 1, wherein said forward rotation buffer member and said reverse rotation buffer member are members for providing buffer elasticity in opposite rotation directions, and said forward rotation buffer member and said reverse rotation buffer member are spaced apart from each other along the axial direction of said driving shaft.

3. The driving mechanism of electric curtain as claimed in claim 2, wherein the forward rotation buffer member and the backward rotation buffer member are torsion springs with opposite rotation directions, the two different ends of the forward rotation buffer member and the backward rotation buffer member are respectively a shaft connecting end and a wheel connecting end, the shaft connecting end of the forward rotation buffer member is connected with the transmission shaft, the wheel connecting end of the forward rotation buffer member is connected with the first reel, the shaft connecting end of the backward rotation buffer member is connected with the transmission shaft, the wheel connecting end of the backward rotation buffer member is connected with the second reel, the outer peripheral surface of the first reel and the outer peripheral surface of the second reel are both provided with winding grooves, and the two transmission wires can be respectively wound in the winding grooves of the first reel and the winding grooves of the second reel.

4. The driving mechanism of electric blind according to claim 3, wherein the outer peripheral wall of the transmission shaft is provided with a positioning recess or two positioning recesses extending in the axial direction, and the axial connection end of the forward rotation buffering member and the axial connection end of the reverse rotation buffering member are mounted in the positioning recess of the transmission shaft;

the inner peripheral surface of the first wire wheel and the inner peripheral surface of the second wire wheel are provided with at least one positioning groove extending axially, the wheel connecting end of the forward rotation buffering component is arranged in the positioning groove of the first wire wheel, and the wheel connecting end of the reverse rotation buffering component is arranged in the positioning groove of the second wire wheel.

5. The driving mechanism of electric object covering curtain as claimed in any one of claims 1 to 4, wherein the driving shaft is detachably connected to the driving shaft, one end of the driving shaft is a pivot end, the other end of the driving shaft has a radially extending baffle portion, the baffle portion is located on a side of the first pulley away from the second pulley, the pivot end extends out of the second pulley, the rotary driver has a pulley cover, the pulley cover is sleeved on the outer sides of the first pulley and the second pulley, the pulley cover is fixedly arranged on the motor set, the pivot end of the driving shaft is pivoted in the pulley cover, and the two driving wires of the driving wire set pass through the pulley cover and are respectively connected to the first pulley and the second pulley.

6. The driving mechanism of an electric blind according to claim 5, wherein said reel housing has two wire guides extending in different directions, one of said wire guides being located in a tangential direction of said first reel, the other of said wire guides being located in a tangential direction of said second reel, said two wire guides respectively providing said two transmission wires to pass therethrough.

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