Electric curtain drive device

Abstract

The utility model discloses a kind of electric curtain driving devices, comprising: drive box, it includes first box;And transmission box, it includes second box, synchronous pulley and the cover plate being set in the bottom of second box towards first box, the synchronous pulley is exposed in second box by passing through cover plate in second box;The cover plate is connected with second box, and the second box is also rotatably connected with first box.Compared with prior art, the utility model has the advantages that by cover plate is connected in the front of box, without tools, can be assembled by hand, convenient and cost-saving, and compared with the back of cover plate and box connection, it is more beneficial to maintenance in front (towards the side of drive box) connection, when adjusting synchronous belt tightness or maintenance, without removing whole track, just need to take down cover plate can expose all internal parts.

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 installing motorized curtains. These curtains (opening and closing curtains) are controlled by operating the motorized curtain's drive mechanism. Existing motorized curtain drive mechanisms typically include a drive box and a transmission box. The drive box contains a motor, and the transmission box contains gears. A clutch device is installed between the motor and the transmission gears to enable manual operation of the motorized curtains.

[0003] Traditional drive devices, such as the curtain motor structure for track-type curtains disclosed in Chinese Patent Application No. 202323034531.6, include a motor body module and a track docking module. The track docking module includes a docking shell, an output gear shaft, and a docking module cover. The docking shell is provided with a track docking plug, a gear shaft mounting slot, and a motor docking plug. The motor docking plug is inserted into the motor body module, and the docking module cover is fixedly placed on the gear shaft mounting slot. This existing cover fixing method requires tools for complete assembly because it is fixed with screws. In addition, the structure covered by the back cover of the transmission box (track docking module) requires the entire track to be removed when adjusting the tension of the timing belt or for maintenance, which is very inconvenient.

[0004] For example, Chinese Patent Application No. 202421225342.9 discloses an electric curtain drive module, including an active box and a power box. The bottom of the active box's inner cavity has an opening to form a main mounting port. The bottom of the active box also has a main cover plate for sealing the main mounting port. Several main connecting columns are vertically connected to the upper surface of the main cover plate. The section of the main connecting column away from the main cover plate abuts against the top cavity wall of the active box's inner cavity, and the end of the main connecting column away from the main cover plate is connected to the active box's housing by bolts. This existing cover plate fixing method, similarly, requires tools for complete assembly because it is fixed with screws. Moreover, its connection position is on the back of the transmission box (active box). When it is necessary to adjust the tension of the timing belt or perform maintenance, the entire track must be removed, which is very inconvenient.

[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 maintain and disassemble, in order to address 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] The drive unit includes a first housing; and

[0009] A transmission housing, comprising a second housing, a synchronous pulley, and a cover plate disposed at the bottom of the second housing facing the first housing, wherein the synchronous pulley passes through the cover plate and protrudes from the second housing; characterized in that:

[0010] The cover plate is snapped into the second box, and the second box is also rotatably connected to the first box.

[0011] By snapping the cover plate onto the front of the housing, assembly can be completed by hand without tools, which is convenient and cost-effective. Compared to connecting the cover plate to the back of the housing, snapping it onto the front (the side facing the drive box) is more conducive to maintenance. When adjusting the tension of the timing belt or performing maintenance, there is no need to remove the entire track; simply removing the cover plate exposes all the internal parts.

[0012] Furthermore, the second housing has an installation opening facing the bottom of the first housing, the cover plate is placed over the installation opening, and the outer peripheral edge of the second housing protrudes radially outward to form a groove;

[0013] The cover plate includes a cover body, a cantilever formed on the outer peripheral edge of the cover body, and a buckle formed on the outside of the cantilever. The cantilever is formed by protruding from the outer peripheral edge of the cover body toward the drive box. The cantilever is inserted into a groove, and the buckle on the cantilever is engaged with the portion of the second box body located at the outer peripheral edge of the groove.

[0014] The transmission box and drive box have a force-bearing flange on the box body rather than on the cover plate. Therefore, the cover plate is only responsible for preventing the timing pulley from falling out of the transmission box and is basically not subjected to force, which can greatly increase the force strength and clamping reliability of the drive device during installation.

[0015] Furthermore, to facilitate the rotational connection of the two housings, the second housing of the transmission housing has a first flange that protrudes radially inward from the outer peripheral edge of the mounting opening. The first flange and the groove are staggered along the circumference of the mounting opening. The first housing of the drive housing has a protrusion facing the top of the transmission housing. A second flange is formed on the outer periphery of the protrusion. The second flange can be inserted into the groove and, after the drive housing and the transmission housing rotate relative to each other, is positioned above the first flange and engages with the first flange.

[0016] Furthermore, to facilitate the installation of the synchronous pulley, a cylindrical mounting groove and a positioning groove are formed in the second housing corresponding to the mounting opening. The mounting groove is connected to the mounting opening, the synchronous pulley is placed in the mounting groove, and the top of the synchronous pulley is placed in the positioning groove and defined by the positioning groove.

[0017] Furthermore, to facilitate defining the position of the synchronous pulley, a positioning groove is also formed inside the second housing, and the top of the synchronous pulley away from the drive housing is placed in the positioning groove and defined by the positioning groove.

[0018] Furthermore, to prevent the drive box and transmission box from continuing to rotate relative to each other after installation, the drive box is provided with a latch, and the second housing of the transmission box is provided with a locking groove that cooperates with the latch at the bottom facing the drive box.

[0019] Furthermore, the synchronous pulley includes synchronous teeth placed inside the second housing and transmission teeth that pass through the cover plate and protrude from the second housing. The synchronous teeth are supported on the cover plate, thereby limiting the position of the synchronous pulley by the cover plate.

[0020] Compared with the prior art, the advantages of this utility model are as follows: by snapping the cover plate onto the front of the housing, no tools are required, and assembly can be completed by hand, which is convenient and cost-effective. Moreover, compared with the back connection of the cover plate to the housing, snapping it onto the front (the side facing the drive box) is more conducive to maintenance. When adjusting the tension of the timing belt or performing maintenance, it is not necessary to remove the entire track; simply removing the cover plate exposes all the internal parts. The force-bearing flange that holds the transmission box and drive box together is located on the housing rather than on the cover plate. Thus, the cover plate is only responsible for preventing the timing pulley from falling out of the transmission box and is basically not subjected to force, which can greatly increase the force strength and snapping reliability of the drive device during installation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the driving device according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the drive box of the drive device according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the transmission box of the drive device according to an embodiment of the present utility model;

[0024] Figure 4 This is an exploded view of the transmission box of the drive device according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the transmission box housing of the drive device according to an embodiment of the present utility model;

[0026] Figure 6 This is a cross-sectional view of the transmission box of the drive device according to an embodiment of the present utility model;

[0027] Figure 7 A cross-sectional view (section and...) of the first housing of the drive box and the second housing of the transmission box, and the cover plate of the drive device according to an embodiment of the present utility model. Figure 6 vertical). Detailed Implementation

[0028] 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.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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.

[0030] See Figures 1 to 7 An electric curtain drive device includes a drive box 100, a transmission box 200, a latch 300 for locking the drive box and the transmission box 200, and a battery module 400.

[0031] The drive box 100 includes a first box 101, and the transmission box 200 includes a second box 201, a synchronous pulley 202, and a cover plate 203. The second box 201 is disposed on the first box 101. The interior of the second box 201 is hollow, and an installation port 2011 is provided at its bottom, which penetrates through the bottom of the second box 201.

[0032] A cover plate 203 is disposed at the mounting opening 2011, and a timing pulley 202 passes through the cover plate 203 from inside the second housing 201 and protrudes from the second housing 201. The cover plate 203 includes a cover body 2031, a cantilever 2032 formed on the outer peripheral edge of the cover plate 2031, and a latch 2033 formed on the outside of the cantilever 2032. The cover body 2031 is generally disc-shaped, and the cantilever 2032 is formed by protruding from the outer peripheral edge of the cover body 2031 toward the drive housing 100. There may be at least two cantilever arms 2032, which are arranged at intervals along the circumferential periphery of the cover body 2031.

[0033] The second housing 201 of the transmission housing 200 has a groove 2012 formed by radially protruding outward from the outer peripheral edge of the mounting opening 2011. The number and position of the grooves 2012 correspond to the cantilever 2032 (snap 2033). During installation, the cover plate 203 is pushed into the second housing 201 from the mounting opening 2011. The cantilever 2032 of the cover plate 203 is inserted into the groove 2012, and the snap 2033 on the cantilever 2032 is engaged with the part of the second housing 201 located at the outer peripheral edge of the groove 2012. This completes the installation of the cover plate 203 and fixes it in place so that it will not fall out.

[0034] The second housing 201 of the transmission housing 200 has a first flange 2013 that protrudes radially inward from the outer peripheral edge of the mounting opening 2011. The first flange 2013 and the groove 2012 are staggered in the circumferential direction of the mounting opening 2011. The top of the first housing 101 of the drive housing 100 has a protrusion 1011, and a second flange 1012 is formed on the outer periphery of the protrusion 1011. The number and position of the first flange 2013 and the second flange 1012 correspond. During installation, the protrusion 1011 can be inserted into the mounting opening 2011, aligning the second flange 1012 with the groove 2012. The first housing 101 is then raised until the second flange 1012 is higher than the first flange 2013. The first housing 101 and the second housing 201 are then rotated relative to each other by a certain angle, causing the second flange 1012 to rotate onto the first flange 2013, thus locking the second flange 1012 onto the first flange 2013. Then, the latch 300 (usually with some elasticity) on the drive housing 100 engages with the corresponding locking groove 2014 at the bottom of the second housing 201 of the transmission housing 200, preventing further relative rotation of the first housing 101 and the second housing 201.

[0035] In this embodiment, the number of the first flange 2013 and the second flange 1012 is 5, but it can be increased or decreased as needed.

[0036] The second housing 201 has a cylindrical mounting groove 2015 and a positioning groove 2016 formed at a position corresponding to the mounting opening 2011, communicating with the mounting opening 2011. A portion of the synchronous pulley 202 is placed in the mounting groove 2015, and the top of the synchronous pulley 202 is placed in the positioning groove 2016, which limits its rotational position and keeps its center unchanged. The synchronous pulley 202 includes synchronous teeth 2021 placed inside the second housing 201 and transmission teeth 2022 protruding from the second housing 201 through the cover plate 203. The synchronous teeth 2021 are used to set the synchronous belt and are supported on the cover plate 203. The cover plate 203 restricts the position of the synchronous pulley 202, ensuring that the synchronous pulley 202 will not fall out of the second housing 201. The transmission connection between the transmission teeth 2022 of the synchronous pulley 202 and the motor (not shown) inside the drive housing 100 is the same as in the prior art.

Claims

1. An electric curtain drive device, comprising: A drive housing (100) includes a first housing (101); as well as A transmission housing (200) includes a second housing (201), a synchronous pulley (202), and a cover plate (203) disposed on the bottom of the second housing (201) facing the first housing (101), wherein the synchronous pulley (202) passes through the cover plate (203) and protrudes from the second housing (201); characterized in that: The cover plate (203) is snapped into the second box (201), and the second box (201) is also rotatably connected to the first box (101).

2. The motorized window treatment drive of claim 1, wherein: The second box (201) has an installation opening (2011) facing the bottom of the first box (101), and the cover plate (203) covers the installation opening (2011). The second box (201) has a groove (2012) that protrudes radially outward from the outer peripheral edge of the installation opening (2011). The cover plate (203) includes a cover body (2031), a cantilever (2032) formed on the outer peripheral edge of the cover body (2031), and a buckle (2033) formed on the outside of the cantilever (2032). The cantilever (2032) is formed by protruding from the outer peripheral edge of the cover body (2031) toward the drive box (100). The cantilever (2032) is inserted into the groove (2012), and the buckle (2033) on the cantilever (2032) is engaged with the part of the second box body (201) located on the outer peripheral edge of the groove (2012).

3. The motorized window treatment drive of claim 2, wherein: The second housing (201) of the transmission box (200) has a first flange (2013) that protrudes radially inward from the outer peripheral edge of the mounting port (2011). The first flange (2013) and the groove (2012) are staggered along the circumference of the mounting port (2011). The first housing (101) of the drive box (100) has a protrusion (1011) on the top of the transmission box (200). The outer periphery of the protrusion (1011) has a second flange (1012). The second flange (1012) can be inserted into the groove (2012) and, after the drive box (100) and the transmission box (200) rotate relative to each other, it is located above the first flange (2013) and holds the first flange (2013).

4. The motorized window treatment drive of claim 2, wherein: The second housing (201) has a cylindrical mounting groove (2015) and a positioning groove (2016) formed at the position corresponding to the mounting port (2011). The mounting groove (2015) is connected to the mounting port (2011). The synchronous pulley (202) is partially placed in the mounting groove (2015), and the top of the synchronous pulley (202) is placed in the positioning groove (2016) and defined by the positioning groove (2016).

5. The motorized window treatment drive of claim 4, wherein: The second housing (201) also has a positioning groove (2016) formed therein, and the top of the synchronous pulley (202) away from the drive housing (100) is placed in the positioning groove (2016) and defined by the positioning groove (2016).

6. The motorized window treatment drive apparatus of any one of claims 1-5, wherein: The drive box (100) is provided with a latch (300), and the second box body (201) of the transmission box (200) is provided with a locking groove (2014) that cooperates with the latch (300) at the bottom facing the drive box (100).

7. The motorized window treatment drive apparatus of any one of claims 1-5, wherein: The synchronous pulley (202) includes a synchronous tooth (2021) placed inside the second housing (201) and a transmission tooth (2022) that passes through the cover plate (203) and protrudes from the second housing (201). The synchronous tooth (2021) is supported on the cover plate (203).

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