CN218683676U

CN218683676U - Motor device for curtain and curtain capable of being opened and closed

Info

Publication number: CN218683676U
Application number: CN202221719982.6U
Authority: CN
Inventors: 谭锦斌; 李裕生
Original assignee: Guangdong Rex Intelligent Technology Co ltd
Current assignee: Guangdong Rex Intelligent Technology Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2023-03-24
Anticipated expiration: 2032-03-29
Also published as: CN217565620U

Abstract

The utility model provides a motor device for curtain and an opening and closing curtain, the motor device for curtain comprises a circular hollow tube, a first sealing cover, a second sealing cover, a first fixing bolt, a second fixing bolt, a motor fixing component, a circuit fixing component and an elastic structure, wherein the motor fixing component and the circuit fixing component are both positioned in the circular hole-shaped tube, the first sealing cover and the second sealing cover respectively seal openings at two ends of the circular hollow tube, the first sealing cover is positioned at one end close to the motor fixing component and is fixed with the motor fixing component through the first fixing bolt; the second closing cap is located the one end that is close to the fixed subassembly of circuit, and is fixed with the fixed subassembly of circuit through second fixing bolt, and first fixing bolt's screw and second fixing bolt's screw all have the clearance with the inner wall of circular hollow tube, and elastic construction is located circular hollow tube, and is located between first closing cap and the second closing cap. The utility model provides a motor device for curtain and curtain that opens and shuts can simplify the assembly, eliminate the accumulative total dimensional error of accessories manufacture process. Ensuring the assembly quality and high qualification rate.

Description

Motor device for curtain and opening and closing curtain

The utility model discloses a chinese utility model patent name "a curtain uses motor device and curtain that opens and shuts" application number: 202220711590.9, filing date: divisional application at 3/29/2022.

Technical Field

The utility model belongs to the technical field of motor devices for curtains, in particular to a motor device for a curtain and an opening and closing curtain.

Background

With the development of science and technology, various automatic control systems are comprehensively integrated into the lives of people, and electric intelligent control is adopted in doors, windows, curtains, sun shading systems and the like in buildings. The existing motor assembly for opening and closing curtains on the market generally adopts a round or square hollow pipe to seal the motor main body in the hollow pipe. When the motor main body needs to be sealed in the hollow pipe to achieve overall attractiveness, the problem of assembling the motor main body and the hollow pipe needs to be considered, and particularly when two ends of the hollow pipe are sealed, the cover and the structural screw holes in the hollow pipe are difficult to align, and the cover is easy to loosen.

When adopting square hollow tube, can be provided with screw fixation hole on the inner wall at four corners of square hollow tube, will take the motor main part of closing cap to put into the hollow tube during the assembly, then adopt the screw fixation through the screw fixation hole at four angles with closing cap and square hollow tube, realize that the motor main part is fixed in the hollow tube. This structure adopts the screw directly to fix the closing cap with the hollow tube, and it is comparatively easy that the screw hole counterpoints to can guarantee that the closing cap is difficult for the pine to take off. However, the circular hollow tube is difficult to realize the screw hole with more convex ribs on the inner wall. The circular hollow tube is difficult to process into structures with different wall thicknesses, so that the yield is low, and the preparation cost is greatly improved. Therefore, the existing motor device for the circular hollow tube curtain is difficult to realize the easy alignment of the screw holes and solve the problem that the cover is easy to loosen.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a simplify motor device and the curtain that opens and shuts of (window) curtain of assembly.

The utility model provides a motor device for curtain, which comprises a circular hollow tube, a first sealing cover, a second sealing cover, a first fixing bolt, a second fixing bolt, a motor fixing component, a circuit fixing component and an elastic structure, wherein the motor fixing component and the circuit fixing component are both positioned in the circular hole-shaped tube, the first sealing cover and the second sealing cover respectively seal openings at two ends of the circular hollow tube, the first sealing cover is positioned at one end close to the motor fixing component and is fixed with the motor fixing component through the first fixing bolt; the second sealing cover is located at one end close to the circuit fixing component and fixed with the circuit fixing component through the second fixing bolt, a gap is reserved between the screw of the first fixing bolt and the screw of the second fixing bolt and the inner wall of the circular hollow tube, and the elastic structure is located in the circular hollow tube and located between the first sealing cover and the second sealing cover.

Preferably, the elastic structure is located between the motor fixing component and the circuit fixing component, the motor fixing component and the circuit fixing component are connected through the elastic structure, one end of the elastic structure abuts against the motor fixing component, and the other end of the elastic structure abuts against the circuit fixing component;

the elastic structure is compressible towards the first cover and/or the second cover; and/or the elastic structure can be contracted from the outer wall of the circular hollow pipe to the circle center.

Preferably, the motor fixing component and the circuit fixing component are connected through the elastic structure, or the motor fixing component and the circuit fixing component are rigidly connected.

Preferably, a first alignment structure is arranged on the inner wall of the circular hollow pipe, a second alignment structure matched with one end of the first alignment structure is arranged on the part of the first sealing cover extending into the circular hollow pipe, and a third alignment structure matched with the other end of the first alignment structure is arranged on the part of the second sealing cover extending into the circular hollow pipe;

the first alignment structure is an alignment protrusion arranged on the inner wall of the circular hollow pipe, and the second alignment structure and the third alignment structure are grooves capable of being matched with the alignment protrusion.

Preferably, the first cover includes a cover end and a first extending portion, the first extending portion is connected to the cover end and extends toward the other side of the cover end, when the first cover and the circular hollow tube are assembled, the first extending portion extends into the circular hollow tube, the cover end abuts against an end opening of the circular hollow tube, the first extending portion is provided with a first through hole, the first through hole is connected to the motor fixing component, and the first fixing bolt is located in the first through hole and extends into the motor fixing component through the first through hole.

Preferably, the fixed subassembly of motor includes motor installation shell, interior closing cap and internal fixation bolt, interior closing cap seals the first end opening of motor installation shell, first closing cap is used for sealing the second end opening of motor installation shell, first extension bottom butt outside the second end of motor installation shell, be provided with lock spiro union hole in the motor installation shell, first end opening with first through-hole UNICOM, first fixation bolt passes first through-hole, by first end opening is through stretching into in the lock spiro union hole, be provided with interior through-hole on the interior closing cap, interior through-hole with second end opening UNICOM, interior fixation bolt's screw passes interior through hole, by second end opening is through stretching into in the lock spiro union hole.

Preferably, the circuit fixing assembly includes a circuit mounting housing and a circuit board fixing frame located in the circuit mounting housing, a circuit board is mounted in the circuit board fixing frame, the circuit mounting housing is limited between the inner sealing cover and the second sealing cover, the elastic structure is located in the circuit mounting housing, and the elastic structure is respectively connected with the circuit board fixing frame and the inner sealing cover;

an output shaft, a speed reducer and a motor are sequentially installed in the motor installation shell, one part of the output shaft is installed in the motor installation shell, the other part of the output shaft extends out of the first sealing cover, and the motor is electrically connected with the circuit board.

Preferably, the first cover further includes a second extending portion, the second extending portion and the cover end portion are concentrically arranged, a radius of the second extending portion is smaller than a radius of the cover end portion, the second extending portion surrounds the first extending portion, an extending length of the second extending portion is smaller than an extending length of the first extending portion, when the first cover and the circular hollow tube are assembled, the cover end portion abuts against an outer end of the circular hollow tube, the second extending portions extend into the circular hollow tube, and an outer side surface of the first extending portion abuts against an inner wall of the circular hollow tube.

Preferably, the first sealing cover is provided with a screw hole penetrating through the first sealing cover, the first fixing bolt penetrates through the screw hole and is fixed with the motor fixing component, the screw hole comprises a first through hole and a second through hole which are coaxial in sequence, the first through hole is connected with the second through hole, the radius of the second through hole is larger than that of the first through hole, a screw of the first fixing bolt is positioned in the first through hole, a nut of the first fixing bolt is positioned in the second through hole, and the top of the nut is flush with an outer opening of the second through hole or lower than that of the second through hole; the screw hole still include with the coaxial third through-hole of second through-hole, the third through-hole with second through-hole UNICOM, and the radius of third through-hole is greater than the radius of second through-hole, still be provided with the cover piece in the third through-hole, the cover of third through-hole outside the nut of first fixing bolt.

The second sealing cover comprises a top groove, the second fixing bolt penetrates through the bottom wall of the top groove to be fixed with the circuit fixing component, a decorative cover is arranged outside the top groove and used for sealing the top groove, and the decorative cover seals the nut of the second fixing bolt in the top groove.

The utility model also provides a curtain that opens and shuts, include (window) curtain motor device and guide rail, be provided with the coaster on the guide rail, the motor is used for the drive the coaster removes.

The utility model provides a motor device for curtain and the simplification assembly that the curtain can great degree of opening and shutting.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual size, emphasis instead being placed upon illustrating the subject matter.

FIG. 1 is a schematic view of the overall structure of a motor device for a curtain according to an embodiment of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure F-F in FIG. 1;

FIG. 3 is a partial enlarged structural view of part A in FIG. 2;

fig. 4 is a schematic view of a detachable structure of a motor device for a curtain according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the first sealing cover according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view taken along line B-B in FIG. 5;

fig. 7 is a schematic structural view of a motor mounting case provided in the present invention;

fig. 8 is a schematic view of the first sealing cap and the circular hollow tube according to the embodiment of the present invention;

in the drawings: circular hollow tube 1, first closing cap 2, second closing cap 3, motor fixed subassembly 4, circuit fixed subassembly 5, elastic construction 6, first fixing bolt 7, first counterpoint structure 11, second counterpoint structure 21, first extension 22, second extension 23, closing cap tip 24, screw hole 25, motor installation shell 41, lock spiro union hole 411, interior closing cap 42, output shaft 43, reduction gear 44, motor 45, circuit installation shell 51, circuit board mount 52.

Detailed Description

To facilitate an understanding of the present invention, the present invention will now be described more fully 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 the other element and be integral therewith, 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 to which this invention belongs. 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 invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 8, an embodiment of the present invention provides a motor device for a curtain, including a circular hollow tube 1, a first sealing cover 2, a second sealing cover 3, a first fixing bolt 7, a second fixing bolt, a motor fixing component 4, a circuit fixing component 5, and an elastic structure 6, where the motor fixing component 4 and the circuit fixing component 5 are both located in the circular hole-shaped tube, the first sealing cover 2 and the second sealing cover 3 respectively seal openings at two ends of the circular hollow tube 1, the first sealing cover 2 is located at one end close to the motor fixing component 4, and is fixed to the motor fixing component 4 by the first fixing bolt 7; the second sealing cover 3 is located at one end close to the circuit fixing component 5, the second sealing cover is fixed to the circuit fixing component 5 through the second fixing bolt, a gap is reserved between the screw of the first fixing bolt 7 and the screw of the second fixing bolt and the inner wall of the circular hollow tube 1, and the elastic structure 6 is located in the circular hollow tube 1 and located between the first sealing cover 2 and the second sealing cover 3.

The elastic structure 6 in this embodiment may be a spring or a plastic member with certain elasticity. The elastic structure 6 may be disposed between the motor fixing member 4 and the first cover 2, between the circuit fixing member 5 and the second cover 3, or between the motor fixing member 4 and the circuit fixing member 5.

In this embodiment, through locking

first closing cap

2 and 3 subtends of second closing cap at circular hollow tube 1 both ends, realize that motor fixed subassembly 4 and circuit fixed subassembly 5 can be better be fixed in circular hollow tube 1. However, due to the mode that the bolt is not directly fixed on the hollow tube, the screw holes of the motor fixing component 4 and the circuit fixing component 5 inside the sealing cover and the hollow tube are difficult to align, the assembly difficulty is high, the precise alignment is difficult during production and assembly, and the batch production is difficult to realize. The embodiment of the utility model provides an in through being provided with elastic construction 6 in circular hollow tube 1, elastic construction in this embodiment can be towards first closing cap and/or the compression of second closing cap direction, elastic construction 6 has certain elasticity along the axial of circular hollow tube 1, can realize eliminating the error at hollow tube both ends, reduce the length dimensional tolerance required precision of accessory, eliminate the accumulative size error of accessories manufacturing process, simplify the assembly, and ensure assembly quality and high qualification rate.

The elastic structure of this embodiment also can be by the outer wall of circular hollow tube to the centre of a circle shrink, and elastic structure 6 also can have certain elasticity in the radial of following circular hollow tube 1, eliminates the error between the fixed subassembly of 4 circuit of motor fixed subassembly 5 and the 1 wall of circular hollow tube, eliminates the accumulative error in the production process, reduces the assembly degree of difficulty between 1 and 2 closing caps of circular hollow tube, simplifies the assembly. The mass production of the motor device for the curtain can be realized.

The motor device for the curtain provided by the embodiment is mainly used as a motor for opening and closing the curtain.

Referring to fig. 2, in a preferred embodiment, the motor fixing member 4 and the circuit fixing member 5 are connected by the elastic structure 6, or the motor fixing member 4 and the circuit fixing member 5 are rigidly connected. The motor fixing component 4 and the circuit fixing component 5 are generally connected by an electric wire in the prior art, such as the structure in patent publication No. CN 211670710U. In the structure, the motor fixing component 4 and the circuit fixing component 5 are connected through the connecting wire, so that the motor fixing component and the circuit fixing component are not supported mutually, and the alignment difficulty is very high when bolts are fixed at two ends. After the motor fixing component 4 is rigidly connected with the circuit fixing component 5, it is difficult to ensure that the whole body formed by the motor fixing component 4 and the circuit fixing component 5 is matched with the circular hollow tube 1 in length, and when an error exists in the internal structure relative to the length of the circular hollow tube 1, the sealing covers at two ends of the circular hollow tube 1 are difficult to lock and can be loosened.

In this embodiment, through motor fixed subassembly 4 with circuit fixed subassembly 5 passes through elastic structure 6 connects or rigid connection, guarantees motor fixed subassembly 4 with circuit fixed subassembly 5 has certain holding power each other, and counterpoint is comparatively easy during the lock bolt. Meanwhile, due to the existence of the elastic structure, the error between the internal structure of the circular hollow tube 1 and the circular hollow tube 1 in the axial direction in the production process can be well eliminated. The sealing covers at the two ends of the round hollow pipe 1 are easy to lock and cannot loosen, so that the batch production is easy to realize.

In this embodiment, when the motor fixing component 4 and the circuit fixing component 5 are rigidly connected by a rigid member, the elastic structure 6 may be located at any position between the first cover 2 and the second cover 3. When the motor fixing component 4 and the circuit fixing component 5 are connected through the elastic structure 6, one end of the elastic structure 6 is connected with the motor fixing component 4 in an abutting mode, and the other end of the elastic structure is connected with the circuit fixing component 5 in an abutting mode.

Referring to fig. 5 and 8, in a preferred embodiment, a first alignment structure 11 is provided on the inner wall of the circular hollow tube 1, the first cover 2 and the portion extending into the circular hollow tube 1 are provided with a second alignment structure 21 engaged with one end of the first alignment structure 11, and the second cover 3 and the portion extending into the circular hollow tube 1 are provided with a third alignment structure (not shown) engaged with the other end of the first alignment structure 11. In a further preferred embodiment, the first aligning structure 11 is an aligning protrusion disposed on an inner wall of the circular hollow tube 1, and the second aligning structure 21 and the third aligning structure are both grooves capable of being matched with the aligning protrusion. Through the cooperation that sets up counterpoint structure, can help better counterpoint between first closing cap 2, second closing cap 3 and the circular hollow tube 1. The alignment is easy to realize. Meanwhile, the end socket can be further prevented from rotating relative to the circular hollow pipe 1, and the use is influenced.

Referring to fig. 4-8, in a preferred embodiment, the first cover 2 includes a cover end 24 and a first extension 22, the first extension 22 is connected to the cover end 24 and extends toward the other side of the cover end 24, when the first cover 2 and the circular hollow tube 1 are assembled, the first extension 22 extends into the circular hollow tube 1, the cover end 24 abuts against an end opening of the circular hollow tube 1, the first extension 22 is provided with a first through hole 14, the first through hole is connected to the motor fixing component 4, and the first fixing bolt 7 is located in the first through hole and extends into the motor fixing component 4 through the first through hole. And a better bolt locking effect is realized.

Referring to fig. 2, 4 and 7, in a preferred embodiment, the motor fixing assembly 4 includes a motor mounting shell 41, an inner closing cover 42 and an inner fixing bolt, the inner closing cover 42 closes a first end opening of the motor mounting shell 41, the first closing cover 2 is used for closing a second end opening of the motor mounting shell 41, the bottom of the first extending portion 22 abuts against the outside of the second end of the motor mounting shell 41, a lock screw through hole 411 is provided in the motor mounting shell 41, the first end opening is communicated with the first through hole, the first fixing bolt passes through the first through hole, the first end opening extends into the lock screw through hole, an inner through hole is provided on the inner closing cover 42, the inner through hole is communicated with the second end opening, and a screw of the inner fixing bolt passes through the inner through hole and extends into the lock screw through hole through the second end opening. An output shaft 43, a speed reducer 44 and a motor 45 are sequentially installed in the motor installation shell 41, one part of the output shaft is installed in the motor installation shell 41, the other part of the output shaft extends out of the first sealing cover, and the motor is electrically connected with the circuit board.

In this embodiment, the motor 45, the speed reducer 44 and the output shaft 43 are sequentially mounted and fixed through the motor mounting case 41 to form a whole, and then the next step of mounting and fixing is performed, so that a good fixing effect is achieved, and the mounting is convenient.

Referring to fig. 4, in a preferred embodiment, the circuit fixing assembly 5 includes a circuit mounting shell 51 and a circuit board fixing frame 52 located in the circuit mounting shell 51, a circuit board is mounted in the circuit board fixing frame 52, the circuit mounting shell 51 is limited between the inner sealing cover 42 and the second sealing cover 3, the elastic structure 6 is located in the circuit mounting shell 51, and the elastic structure 6 is respectively connected to the circuit board fixing frame 52 and the inner sealing cover 42. The motor fixing component and the circuit fixing component can be well fixed.

Referring to fig. 5, 6 and 8, in a preferred embodiment, the first cover 2 further includes a second extending portion 23, the second extending portion 23 and the cover end portion 24 are concentrically disposed, a radius of the second extending portion 23 is smaller than a radius of the cover end portion 24, the second extending portion 23 surrounds the first extending portion 22, an extending length of the second extending portion 23 is smaller than an extending length of the first extending portion 22, when the first cover 2 and the circular hollow tube 1 are assembled, the cover end portion 24 abuts against an outer end of the circular hollow tube 1, the second extending portions 23 both extend into the circular hollow tube 1, and an outer side surface of the first extending portion 22 abuts against an inner wall of the circular hollow tube 1. The second alignment structure 21 is disposed on the first extension portion 22 and is used for matching with an alignment protrusion disposed on the inner wall of the circular hollow tube 1.

Referring to fig. 3 and 6, in a preferred embodiment, a screw hole 25 penetrating through the first cover 2 is formed in the first cover 2, the first fixing bolt penetrates through the screw hole 25 and is fixed to the motor fixing assembly 4, the screw hole 25 includes a first through hole and a second through hole which are coaxial in sequence, the first through hole and the second through hole are connected, the radius of the second through hole is larger than that of the first through hole, the first through hole is formed in a first extension, a screw of the first fixing bolt 7 is located in the first through hole, a nut of the first fixing bolt 7 is located in the second through hole, and the top of the nut is flush with or lower than an outer opening of the second through hole; the screw hole 25 further includes a third through hole coaxial with the second through hole, the third through hole being communicated with the second through hole, and a radius of the third through hole being larger than a radius of the second through hole. The third through hole is further provided with a covering sheet 25 which can cover the nut of the first fixing bolt and hide the first fixing bolt, so that the attractive appearance is stronger.

In a preferred embodiment, the second cover 3 includes a top groove, the second fixing bolt passes through the bottom wall of the top groove and is fixed with the circuit fixing assembly 5, a decorative cover is arranged outside the top groove and used for closing the top groove, and the decorative cover closes the nut of the second fixing bolt in the top groove. The embodiment can realize hiding the bolt, so that the bolt cannot be seen on the surface, and the attractiveness is stronger. And the bolt is not exposed and is not easy to loosen, so that the stability is better.

Referring to fig. 1-8, the embodiment of the present invention further provides an opening and closing curtain, including a curtain motor device and a guide rail, a pulley is provided on the guide rail, and a motor is used for driving the pulley to move, further, a main transmission box and an auxiliary transmission box are respectively provided at two ends of the guide rail, a driving wheel and a driven wheel are respectively installed in the main transmission box and the auxiliary transmission box, and the curtain motor device driving the driving wheel is installed outside the main transmission box.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. 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 being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another 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 application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application and that changes, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art within the scope of the present application.

Claims

1. A motor device for a curtain is characterized by comprising a hollow tube, a first sealing cover, a second sealing cover, a motor fixing component, a circuit fixing component and an elastic structure, wherein the motor fixing component and the circuit fixing component are both positioned in the hollow tube, the first sealing cover and the second sealing cover respectively seal openings at two ends of the hollow tube, and the first sealing cover is positioned at one end close to the motor fixing component and is fixed with the motor fixing component; the second sealing cover is positioned at one end close to the circuit fixing component and is fixed with the circuit fixing component, and the elastic structure is positioned in the hollow pipe and is positioned between the first sealing cover and the second sealing cover.

2. The motor apparatus for window curtains as claimed in claim 1, wherein the elastic structure is located between the motor fixing member and the circuit fixing member, the motor fixing member and the circuit fixing member being connected by the elastic structure, one end of the elastic structure abutting against the motor fixing member and the other end abutting against the circuit fixing member;

the elastic structure can be compressed towards the first cover and/or the second cover; and/or the elastic structure can be contracted towards the circle center from the outer wall of the hollow pipe.

3. The motor apparatus for window curtains as claimed in claim 1, wherein the motor fixing member and the circuit fixing member are connected by the elastic structure, or the motor fixing member and the circuit fixing member are rigidly connected.

4. The motor apparatus for window curtains as claimed in claim 1, wherein the inner wall of the hollow tube is provided with a first alignment structure, a portion of the first cover extending into the hollow tube is provided with a second alignment structure engaged with one end of the first alignment structure, and a portion of the second cover extending into the hollow tube is provided with a third alignment structure engaged with the other end of the first alignment structure;

the first alignment structure is an alignment protrusion arranged on the inner wall of the hollow pipe, and the second alignment structure and the third alignment structure are grooves capable of being matched with the alignment protrusion.

5. The motor apparatus for window curtains as claimed in claim 1, wherein the hollow tube is a circular hollow tube, the motor apparatus further comprises a first fixing bolt, the first cover is fixed to the motor fixing member by the first fixing bolt, and a screw of the first fixing bolt has a gap with an inner wall of the hollow tube;

the first sealing cover comprises a sealing cover end part and a first extending part, the first extending part is connected with the sealing cover end part and extends towards the other side of the sealing cover end part, when the first sealing cover is assembled with the hollow pipe, the first extending part extends into the hollow pipe, the sealing cover end part abuts against an end opening of the hollow pipe, the first extending part is provided with a first through hole, the first through hole is connected with the motor fixing component, and the first fixing bolt is located in the first through hole and penetrates through the first through hole to extend into the motor fixing component.

6. The motor device for window curtains as defined in claim 5, wherein the motor fixing assembly comprises a motor mounting housing, an inner closing cover and an inner fixing bolt, the inner closing cover closes the first end opening of the motor mounting housing, the first closing cover is used for closing the second end opening of the motor mounting housing, the bottom of the first extending portion abuts against the outside of the second end of the motor mounting housing, a screw locking through hole is formed in the motor mounting housing, the first end opening is communicated with the first through hole, the first fixing bolt penetrates through the first through hole and extends into the screw locking through hole through the first end opening, an inner through hole is formed in the inner closing cover and is communicated with the second end opening, and a screw of the inner fixing bolt penetrates through the inner through hole and extends into the screw locking through hole through the second end opening.

7. The apparatus for a window covering of claim 6, wherein said circuit fixing assembly comprises a circuit mounting housing and a circuit board fixing frame disposed in said circuit mounting housing, a circuit board is mounted in said circuit board fixing frame, said circuit mounting housing is limited between said inner sealing cover and said second sealing cover, said elastic structure is disposed in said circuit mounting housing, and said elastic structure is respectively connected to said circuit board fixing frame and said inner sealing cover;

8. The motor apparatus for window curtains as defined in claim 5, wherein the first cover further comprises a second extension, the second extension and the cover end are concentrically disposed, the radius of the second extension is smaller than the radius of the cover end, the second extension surrounds the first extension, the extension length of the second extension is smaller than the extension length of the first extension, when the first cover and the hollow tube are assembled, the cover end abuts against the outer end of the hollow tube, the second extensions both extend into the hollow tube, and the outer side surface of the first extension abuts against the inner wall of the hollow tube.

9. The motor apparatus for window curtains as claimed in claim 1, wherein the motor apparatus further comprises a first fixing bolt and a second fixing bolt, the first cover is fixed to the motor fixing member by the first fixing bolt, the second cover is fixed to the circuit fixing member by the second fixing bolt, both the screw of the first fixing bolt and the screw of the second fixing bolt have a gap with the inner wall of the hollow tube, the first cover is provided with a screw hole penetrating through the first cover, the first fixing bolt penetrates through the screw hole and is fixed to the motor fixing member, the screw hole comprises a first through hole and a second through hole which are coaxial in sequence, the first through hole and the second through hole are connected, and the radius of the second through hole is greater than that of the first through hole, the screw of the first fixing bolt is located in the first through hole, the nut of the first fixing bolt is located in the second through hole, the top of the nut is flush with or lower than the outer opening of the second through hole; the screw hole further comprises a third through hole coaxial with the second through hole, the third through hole is communicated with the second through hole, the radius of the third through hole is larger than that of the second through hole, a covering sheet is further arranged in the third through hole, and the third through hole covers the outside of a nut of the first fixing bolt;

10. An opening and closing curtain, characterized in that, comprises the motor device for curtain as claimed in any one of claims 1-9 and a guide rail, a trolley is arranged on the guide rail, and the motor is used for driving the trolley to move.