Electric curtain driving device

Abstract

The utility model discloses an electric curtain driving device which comprises a motor which comprises an end cover located on the top. The transmission box comprises a box body, and the end cover is connected with the box body; the locking mechanism is used for limiting the position of the box body in the circumferential direction of the end cover; the locking mechanism comprises a locking piece which can rotate and / or move up and down relative to the end cover, the locking piece comprises a pressing part and a locking part which are integrated, and the locking part extends upwards from the pressing part; the elastic sheet is arranged on the end cover or is integrated with the end cover; and the elastic sheet has a trend of keeping the locking part in the locking groove.

Description

Technical Field

[0001] This utility model relates to a power device, and more particularly to an electric curtain drive device. Background Technology

[0002] As people's demands for home life continue to increase, more and more families are starting to install electric curtains, which can be opened or closed by controlling the drive mechanism of the electric curtains.

[0003] Existing motorized curtain drive mechanisms typically include a drive box and a transmission box. The drive box includes a motor, and the transmission box includes gears for transmission. A clutch device is installed between the motor and the transmission gears to enable manual operation of the motorized curtain. As disclosed in Chinese patents with application numbers 202322001263.1, 202020010240.0, and 202321935271.7, the power output end of the motor in the drive box of the drive mechanism is connected to the power input end of the transmission box. The drive box and the transmission box are connected by a rotary connection structure to limit their relative positions in the vertical direction. A rotary locking structure is also required (the elastic retraction element and actuating part in 202322001263.1, the elastic button assembly in 202020010240.0, and the snap-fit ​​connection mechanism in 202321935271.7) to prevent the motor from rotating relative to the transmission box.

[0004] However, the rotary locking structures in these existing technologies typically include multiple components, such as buttons, elastic elements, screws, and shafts, making the structure relatively complex and requiring complicated assembly and numerous installation steps.

[0005] Therefore, further improvements are needed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an electric curtain drive device that is simple in structure and easy to install, addressing the shortcomings of the existing technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: an electric curtain drive device, comprising:

[0008] An electric motor, including an end cap located at the top;

[0009] A transmission housing, comprising a housing body, wherein the end cap is connected to the housing body; and

[0010] A locking mechanism for limiting the position of the housing along the circumferential direction of the end cover; characterized in that:

[0011] The locking mechanism includes:

[0012] A locking element that can rotate and / or move up and down relative to the end cap, the locking element comprising an integral pressing part and a locking part, the locking part extending upward from the pressing part;

[0013] Spring clips, mounted on or integrated with the end cap; and

[0014] The locking groove has a tendency to keep the locking part within the locking groove.

[0015] By simplifying the components of the locking mechanism or integrating it with the end cap, the number of components of the locking mechanism can be reduced, which not only reduces the difficulty of installation and saves processes, but also reduces production costs, while ensuring reliable locking function.

[0016] According to one aspect of the present invention, the locking member further includes a rotating shaft integrated with the pressing part;

[0017] The locking mechanism further includes a mounting groove on the end cover of the motor. The mounting groove includes a first groove and a second groove. The first groove is recessed downward from the top surface of the end cover and extends through the peripheral wall of the end cover. The second groove is located on opposite sides of the first groove. The pressing part is at least partially located in the first groove. The rotating shaft cooperates with the second groove to rotate and / or move up and down relative to the end cover.

[0018] Preferably, the spring is a metal spring sheet, and the spring sheet is in a bent shape;

[0019] The locking mechanism also includes a notch on the end cover of the motor. The notch is formed on the side wall of the first groove facing the inside of the end cover. The notch is located between two second grooves. The first groove, the second groove and the notch are interconnected.

[0020] The bent part of the spring sheet passes through the notch from the mounting groove inward, and the two ends of the spring sheet abut against the end cap and the locking part, respectively.

[0021] Furthermore, the spring is preferably provided that the spring includes a first elastic arm and a second elastic arm that are bent relative to each other; the end of the first elastic arm that is exposed outside the notch is inserted into the locking part from bottom to top, and the end of the second elastic arm that is exposed outside the notch abuts against the side wall of the first groove facing the end cover.

[0022] To further define the position of the spring, part of the rotating shaft is engaged with the bend of the first and second elastic arms.

[0023] To further define the position of the second elastic arm of the spring, a stepped surface is formed on the top surface of the side wall of the first groove facing the end cap below the notch. The stepped surface gradually slopes downward from the inside to the outside, and the second elastic arm of the spring is supported on the stepped surface.

[0024] Preferably, to further reduce component installation, the locking member also includes a support piece integrated with the pressing part;

[0025] The locking mechanism also includes a notch on the end cover of the motor. The notch is formed on the side wall of the first groove facing the inside of the end cover. The notch is located between two second grooves. The first groove, the second groove and the notch are interconnected.

[0026] The spring is a plastic sheet integrally formed with the end cap. Part of the spring is located in the first groove and part passes through the notch. The support piece supports the top of the spring.

[0027] According to one aspect of the present invention, the locking mechanism further includes a mounting groove on the end cover of the motor. The mounting groove includes a first groove portion that is recessed downward from the top surface of the end cover and extends through the peripheral wall of the end cover. The pressing portion is at least partially located within the first groove portion. The spring, the locking member, and the end cover are integrally formed. The spring is U-shaped and located within the mounting groove. The spring is connected between the top of the end cover and the pressing portion. Thus, the locking mechanism can be used without installation, which is more convenient.

[0028] To facilitate the deformation of the spring sheet, a through groove is formed on the spring sheet along the U-shaped extension direction.

[0029] Furthermore, the top of the end cover is provided with a first rotating connector, and the transmission box also includes a second rotating connector provided at the bottom of the box body. The first rotating connector and the second rotating connector are connected to each other so that the motor and the transmission box maintain a relatively stable position along the motor axis.

[0030] Compared with the prior art, the advantages of this utility model are: by simplifying the components of the locking mechanism or merging it with the end cap, the number of components of the locking mechanism is reduced, which not only reduces the difficulty of installation and saves processes, but also reduces production costs, while ensuring a reliable locking function. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the driving device according to the first embodiment of the present invention;

[0032] Figure 2 This is an exploded view of the driving device according to the first embodiment of the present invention;

[0033] Figure 3 This is a cross-sectional view of the driving device according to the first embodiment of the present invention;

[0034] Figure 4 for Figure 3 A magnified schematic diagram of part I;

[0035] Figure 5 This is a schematic diagram of the transmission box of the drive device according to the first embodiment of the present utility model;

[0036] Figure 6 This is an exploded structural diagram of the drive box and locking mechanism of the drive device according to the first embodiment of the present utility model (only part of the drive box is shown);

[0037] Figure 7 This is an exploded structural diagram of the drive box and locking mechanism of the drive device according to the second embodiment of the present utility model (only part of the drive box is shown);

[0038] Figure 8 This is a partial cross-sectional view of the drive box and locking mechanism of the drive device according to the second embodiment of the present utility model;

[0039] Figure 9 This is a schematic diagram of the locking member of the driving device according to the second embodiment of the present invention;

[0040] Figure 10 This is an exploded structural diagram of the drive box and locking mechanism of the drive device according to the third embodiment of the present utility model (only part of the drive box is shown);

[0041] Figure 11 This is a partial cross-sectional view of the drive box and locking mechanism of the drive device according to the third embodiment of the present utility model. Detailed Implementation

[0042] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0043] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this utility model can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0044] Example 1

[0045] See Figures 1-6 An electric curtain drive device includes a drive box 100, a transmission box 200, and a locking mechanism 300. The drive box 100 includes a motor 11, and the transmission box 200 includes a housing 21, which may contain gears or the like that that are connected to the motor 11 for transmission.

[0046] The motor 11 includes an end cover 111 located at the top, the drive housing 100 includes a first rotary connector 12 disposed on the top of the end cover 111, and the transmission housing 200 includes a second rotary connector 22 disposed at the bottom of the housing 21. After the first rotary connector 12 and the second rotary connector 22 rotate relative to each other, they can be connected to each other so that the drive housing 100 and the transmission housing 200 maintain a relatively stable position along the axial direction of the motor 11. That is, the two cannot move relative to the axial direction of the motor 11, but they can rotate relative to each other (the axis of rotation is the axis of the motor 11). The cooperation method of the first rotary connector 12 and the second rotary connector 22 is prior art and will not be described in detail here.

[0047] To prevent the drive housing 100 and transmission housing 200 from rotating relative to each other after being connected by the aforementioned rotary connection, the drive device further includes a locking mechanism 300, which limits the position of the housing 21 relative to the end cover 111 along the circumference of the end cover 111. The locking mechanism 300 includes a locking element 31 and a spring 32. In this embodiment, the spring 32 is a metal spring sheet with a certain deformation capability. The locking mechanism 300 also includes a locking groove 33 at the bottom of the housing 21 of the transmission housing 200, a mounting groove 34 on the end cover 111 of the motor 11, and a notch 35 on the end cover 111 of the motor 11. The spring 32 is bent, such as in a roughly V-shape, and thus the spring 32 includes a first elastic arm 321 and a second elastic arm 322, which are integrally formed. The included angle between the first elastic arm 321 and the second elastic arm 322 is preferably a rounded corner to cooperate with the rotating shaft 313 described below.

[0048] The locking element 31 is a single piece, including a pressing part 311, a locking part 312, a rotating shaft 313, and a connecting arm 314. The pressing part 311 can be pressed by the operator, and the locking part 312 extends upward from the pressing part 311. The connecting arm 314 is provided at the transition position between the pressing part 311, the locking part 312, or the pressing part 311 and the locking part 312. There are two connecting arms 314 arranged at intervals, and the rotating shaft 313 passes through the two connecting arms 314. During installation, the connecting arms 314 face into the end cover 111 of the motor 11, the rotating shaft 313 is in a horizontally extending state, perpendicular to the axis (vertically extending) of the motor 11, and the two elastic arms of the spring 32 are both inclined relative to the horizontal direction.

[0049] The locking groove 33 has an opening 331 on its side, and the locking part 312 can rotate into the locking groove 33 from the opening 331, thereby defining the position of the transmission box 200 in the circumferential direction and preventing it from rotating relative to the motor 11. The mounting groove 34 includes a first groove 341 and a second groove 342. The first groove 341 is recessed downward from the top surface of the end cover 111 and extends through the peripheral wall of the end cover 111. The pressing part 311 can be at least partially located in the first groove 341. The second grooves 342 are disposed on opposite sides of the first groove 341 for cooperating with the rotating shaft 313. The rotating shaft 313 can rotate, move up and down, or perform a combination of both relative to the second grooves 342. In this embodiment, it is a combination of both. A notch 35 is formed on the side wall of the first groove 341 facing the end cover 111. The notch 35 is located between the two second grooves 342. The first groove 341, the second groove 342, and the notch 35 are interconnected.

[0050] Therefore, during installation, the bent portion of the spring piece 32 is first passed inward from the mounting groove 34 through the notch 35, so that the bent portion is located outside the mounting groove 34 (inside the end cap 111); then, the pivot 313 of the locking member 31 is inserted into the second groove 342, thereby the end of the first elastic arm 321 of the spring piece 32 protruding outside the notch 35 abuts against the locking part 312 of the locking member 31 (inserted into the locking part 312 from bottom to top), and the end of the second elastic arm 322 protruding outside the notch 35 abuts against the side wall of the first groove 341 facing the end cap 111, thereby keeping the locking member 31 inclined to engage the locking part 312 in the locking groove 33. To limit the position of the spring piece 32, the pivot 313 portion located between the two connecting arms 314 can be engaged into the bent portion of the first elastic arm 321 and the second elastic arm 322.

[0051] The top surface of the sidewall of the first groove 341 facing the end cap 111, below the notch 35, has a stepped surface 343, which extends from the inside out. Figure 4 As shown in the diagram (from right to left), it gradually slopes downwards, thereby supporting the second elastic arm 322 of the spring piece 32 and keeping the second elastic arm 322 in that position.

[0052] When it is necessary to disassemble the drive housing 100 and the transmission housing 200, simply press the pressing part 311 downwards, thereby causing the locking part 312 to rotate in the same direction as the pressing part 311. Figure 4 As shown, the first elastic arm 321 rotates counterclockwise and downward to exit the locking groove 33 from the opening 331 of the locking groove 33, no longer limiting the transmission box 200 in the circumferential direction. The transmission box 200 and the drive box 100 can rotate relative to each other, thereby releasing the connection between the first rotating connector 12 and the second rotating connector 22. During the unlocking process, the first elastic arm 321 generates a certain downward and downward force due to the rotation and downward movement of the locking part 312. Figure 4The counterclockwise deformation shown provides a reset force for the locking part 312 to lock again. When the drive housing 100 and transmission housing 200 are reinstalled, the force of the pressing part 311 is released, and the spring piece 32 causes the locking part 312 to lock into the locking groove 33 again. At this time, the deformation of the spring piece 32 is not fully restored, so as to provide a force for locking the locking part 312 in the locking groove 33 (because the deformation direction is counterclockwise). Figure 4 As shown, counterclockwise, therefore the force is directed towards the locking part 312 in a clockwise direction.

[0053] Example 2

[0054] See Figures 7-9 In this embodiment, the difference from the first embodiment is that the spring piece 32 is a plastic sheet, which is integrally formed with the end cap 111. The spring piece 32 is partially located in the first groove 341, and partially passes through the notch 35.

[0055] In the locking component 31, the rotating shaft 313 is divided into two parts, which are only located on the side of each connecting arm 314 away from the other connecting arm 314. A support plate 315 is provided between the two connecting arms 314, and the support plate 315 does not contact the connecting arm 314.

[0056] During installation, after the locking member 31 is inserted, the support piece 315 supports the portion of the spring piece 32 that passes through the notch 35 (the top of the spring piece 32), thereby causing the locking member 31 to maintain the tendency of the locking part 312 to be engaged in the locking groove 33.

[0057] When it is necessary to disassemble the drive housing 100 and the transmission housing 200, simply press the pressing part 311 downwards, thereby causing the locking part 312 to rotate in the same direction as the pressing part 311. Figure 4 As shown, it rotates counterclockwise and downwards to exit the locking groove 33 from the opening 331 of the locking groove 33, no longer limiting the transmission box 200 in the circumferential direction. The transmission box 200 and the drive box 100 can rotate relative to each other, thereby releasing the connection between the first rotating connector 12 and the second rotating connector 22. During the unlocking process, due to the rotation of the locking member 31 (rotation direction is...) Figure 8 (In the counterclockwise direction shown) and downward movement, the support piece 315 of the locking member 31 is no longer in contact with the top of the spring piece 32, and the transition position of the support piece 315 and the locking part 312 gradually moves to the outside of the top of the spring piece 32 (as shown). Figure 8 (As shown on the left), thereby applying a force to the spring 32, causing it to produce a certain downward force. Figure 8The clockwise deformation shown provides a reset force for the locking part 312 to lock again. When the drive housing 100 and transmission housing 200 are reinstalled, the force of the pressing part 311 is released, and the spring piece 32 causes the locking part 312 to lock into the locking groove 33 again. At this time, the deformation of the spring piece 32 is not fully restored, so as to provide a force for locking the locking part 312 in the locking groove 33 (because the deformation direction is clockwise). Figure 8 As shown, clockwise and downward, therefore, a force in the counterclockwise and upward direction towards the locking part 312.

[0058] Example 3

[0059] See Figure 10 and Figure 11 In this embodiment, the difference from the first embodiment is that the locking member 31 only includes a pressing part 311 and a locking part 312. The spring piece 32, the locking member 31, and the end cap 111 are integrally formed. Therefore, the deformation of the spring piece 32 follows that of the locking member 31. The spring piece 32 is generally U-shaped and is located in the mounting groove 34, connecting the top of the end cap 111 and the pressing part 311. To give the spring piece 32 better deformation capability, a U-shaped through groove 323 can be formed on it along the U-shaped extension direction.

Claims

1. A motorized window treatment drive, comprising: a motor (11) including a top end cover (111); a transmission case (200) including a case body (21), the end cover (111) and the case body (21) being connected; and a locking mechanism (300) for defining a position of the case body (21) circumferentially along the end cover (111); characterized in that: the locking mechanism (300) includes: a locking piece (31) rotatable and / or movable up and down relative to the end cover (111), the locking piece (31) including an integral pressing portion (311) and a locking portion (312), the locking portion (312) extending upwardly from the pressing portion (311); a spring piece (32) mounted on or integral with the end cover (111); and a locking groove (33), the spring piece (32) having a tendency to keep the locking portion (312) within the locking groove (33).

2. The motorized window treatment drive of claim 1, wherein: the locking piece (31) further includes a rotating shaft (313) integral with the pressing portion (311); the locking mechanism (300) further includes a mounting groove (34) provided on the end cover (111) of the motor (11), the mounting groove (34) including a first groove portion (341) and a second groove portion (342), the first groove portion (341) being recessed downwardly from a top surface of the end cover (111) and penetrating a peripheral wall of the end cover (111), the second groove portion (342) being provided on opposite sides of the first groove portion (341), the pressing portion (311) being at least partially located within the first groove portion (341), the rotating shaft (313) being cooperated with the second groove portion (342) to be rotatable and / or movable up and down relative to the end cover (111).

3. The motorized window treatment drive of claim 2, wherein: the spring piece (32) is a spring sheet made of metal, the spring piece (32) being in a bent shape; the locking mechanism (300) further includes a notch (35) provided on the end cover (111) of the motor (11), the notch (35) being formed on a side wall of the first groove portion (341) facing inwardly of the end cover (111), the notch (35) being located between the two second groove portions (342), the first groove portion (341), the second groove portion (342) and the notch (35) being in communication with each other in pairs; the bent portion of the spring piece (32) penetrates inwardly from the mounting groove (34) through the notch (35), the two ends of the spring piece (32) abutting against the end cover (111) and the locking portion (312) respectively.

4. The motorized window treatment drive of claim 3, wherein: the spring piece (32) includes a first elastic arm (321) and a second elastic arm (322) opposite to each other in the bent shape, the end of the first elastic arm (321) of the spring piece (32) exposed outwardly of the notch (35) being inserted into the locking portion (312) from bottom to top, the end of the second elastic arm (322) of the spring piece (32) exposed outwardly of the notch (35) abutting against the side wall of the first groove portion (341) facing inwardly of the end cover (111).

5. The motorized window treatment drive of claim 4, wherein: a portion of the rotating shaft (313) is clamped into the bent portion of the first elastic arm (321) and the second elastic arm (322).

6. The motorized window treatment drive apparatus of claim 4, wherein: The top surface of the side wall of the first slot part (341) inside the end cover (111) under the notch (35) is formed with a stepped surface (343) which gradually inclines downward from inside to outside, and the second elastic arm (322) of the elastic sheet (32) is supported on the stepped surface (343).

7. The motorized window treatment drive of claim 2, wherein: The locking member (31) further comprises a support sheet (315) which is integral with the pressing part (311); The locking mechanism (300) further comprises a notch (35) provided on the end cover (111) of the motor (11), the notch (35) is formed on the side wall of the first slot part (341) inside the end cover (111), the notch (35) is located between the two second slot parts (342), and the first slot part (341), the second slot part (342) and the notch (35) are in communication with each other in pairs; The elastic sheet (32) is a plastic sheet which is integrally formed with the end cover (111), part of the elastic sheet (32) is located in the first slot part (341) and part of the elastic sheet (32) passes through the notch (35), and the support sheet (315) is supported on the top of the elastic sheet (32).

8. The motorized window treatment drive of claim 1, wherein: The locking mechanism (300) further comprises a mounting slot (34) provided on the end cover (111) of the motor (11), the mounting slot (34) comprises a first slot part (341), the first slot part (341) is recessed downward from the top surface of the end cover (111) and penetrates the peripheral wall of the end cover (111), the pressing part (311) is at least partially located in the first slot part (341), the elastic sheet (32), the locking member (31) and the end cover (111) are integrally formed, the elastic sheet (32) is in a U shape and is located in the mounting slot (34), and the elastic sheet (32) is connected between the top of the end cover (111) and the pressing part (311).

9. The motorized window treatment drive apparatus of claim 8, wherein: The elastic sheet (32) is formed with a through slot (323) along the extending direction of the U shape.

10. The motorized window treatment drive of claim 1, wherein: The top of the end cover (111) is provided with a first rotary connecting member (12), the transmission box (200) further comprises a second rotary connecting member (22) provided on the bottom of the box body (21), and the first rotary connecting member (12) and the second rotary connecting member (22) are connected with each other so that the motor (11) and the transmission box (200) maintain a relatively stable position along the axial direction of the motor (11).

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