A track switching device and an electric vertical curtain using the track switching device

Abstract

The present invention discloses a track switching device, characterized in that it includes a housing, a transmission mechanism disposed in the housing, and a transmission pin for cooperating with a track, the input end of the transmission mechanism is a power input end, the output end of the transmission mechanism is connected to the transmission pin, and the rotation directions of the input end and the output end of the transmission mechanism are perpendicular to each other. Also disclosed is an electric vertical curtain using the track switching device as described above. Compared with the prior art, the advantages of the present invention are that the track switching device with a 90° turn can be easily converted from a manually operated track to an electrically operated track at a relatively low cost, and is easy to install.

Description

Technical Field

[0001] The invention relates to a curtain, in particular to a track switching device and an electric vertical curtain using the track switching device. Background Art

[0002] Vertical blinds use a swinging leaf structure, which can make the blinds move left and right to realize the retraction and extension of the vertical blinds, and can also make the blinds turn to change the direction of light transmission. Vertical blinds have an increasingly wide range of uses because they can adjust indoor light, ventilate and provide shade.

[0003] At present, vertical curtains are mainly divided into manual and electric types. The manual type, such as the one disclosed in the Chinese patent application number 201220160105.X, is a vertical curtain opening and closing device, including an end cover, a track, a belt, a plurality of sliding units and a transmission mechanism, the transmission mechanism is arranged inside the end cover, including a driven mechanism and an active mechanism, the driven mechanism includes a first bearing, a belt gear, a driven gear and a second bearing from top to bottom, connected as a whole through a first gear shaft, the belt passes around the belt gear, and the through hole on the belt is meshed with the belt gear; the active mechanism includes a third bearing, a main gear and a fourth bearing from top to bottom, connected as a whole through a second gear shaft, the main gear is meshed with the driven gear, the second gear shaft passes through the end cover cover and is connected to the handle through a universal joint shaft, the main gear and the driven gear are driven by the rotation of the handle, thereby driving the rotation of the belt.

[0004] An electric vertical curtain with manual opening and closing and electric dimming disclosed in a Chinese patent application number 201820313025.0 includes a track and a driving mechanism arranged at one end of the track, a dimming shaft for driving the curtain piece to rotate is provided in the track, the driving mechanism includes a motor connected to the dimming shaft, a first guide wheel and a second guide wheel are respectively provided at both ends of the track, a pull rope for driving the curtain piece to translate is wound around the first guide wheel and the second guide wheel, and the pull rope extends from the track for manual operation.

[0005] With the development of smart homes, more and more places have the need to convert manual curtains into electric curtains. Since vertical curtains use independent curtain pieces that can rotate around a vertical axis, electric vertical curtains as described above usually require the motor to be placed horizontally on the side of the track. When converting manual vertical curtains, since the transmission shaft extends in the vertical direction, if the motor is placed vertically, the vertical curtain pieces at the end of the track will collide with the motor during rotation. For this reason, the original manual vertical curtains can only be completely removed, which greatly increases the cost and lengthens the installation period, bringing many inconveniences; in addition, since the curtain pieces of the vertical curtains cannot cover the motor, the motor is exposed, resulting in an unsightly overall appearance of the vertical curtains. Summary of the invention

[0006] The first technical problem to be solved by the present invention is to provide a track switching device to address the deficiencies of the above-mentioned prior art, so as to facilitate the transformation of existing manual curtains into electric vertical curtains, with low cost and easy installation.

[0007] The second technical problem to be solved by the present invention is to provide an electric vertical curtain using the track switching device.

[0008] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: a track switching device, characterized in that it includes a shell, a transmission mechanism arranged in the shell and a transmission pin for cooperating with the track, the input end of the transmission mechanism is the power input end, and the output end of the transmission mechanism is connected to the transmission pin, and the rotation directions of the input end and the output end of the transmission mechanism are perpendicular to each other.

[0009] Preferably, the transmission mechanism includes a first bevel tooth, a second bevel tooth and a spur gear set, the first bevel tooth has a first rotating shaft serving as the input end of the transmission mechanism, the first bevel tooth and the second bevel tooth are meshed with each other, the spur gear set has a primary gear and a final gear, the primary gear is coaxially arranged with the second bevel tooth, and the final gear is connected to a transmission pin and rotates synchronously.

[0010] In order to facilitate the connection between the transmission mechanism and the transmission pin, the final gear is recessed from the circumferential outer side to the middle to form a second connecting groove as the output end of the transmission mechanism, and the transmission pin can be inserted into the second connecting groove.

[0011] In order to facilitate the insertion of the transmission pin into the second connecting groove, the second connecting groove is formed on the teeth of the final gear, and the axial end face of the final gear is provided with an end plate. The second connecting groove penetrates the end plate in the axial direction of the final gear, and a notch is formed in the part of the end plate located at the outer periphery of the second connecting groove. The outer side of the notch penetrates the outer peripheral edge of the end plate, and the inner side of the notch is connected to the second connecting groove. The two sides of the notch in the circumferential direction gradually extend towards each other from the outside to the inside to form a trumpet shape.

[0012] In order to facilitate the synchronous rotation of the second connecting groove and the driving pin, the driving pin is a flat shaft, and the shape of the second connecting groove is adapted to the driving pin.

[0013] Preferably, the second bevel tooth has a second rotation axis, the first rotation axis and the second rotation axis are perpendicular to each other, and the second rotation axis is parallel to the transmission pin.

[0014] Preferably, in order to facilitate the insertion of the track and the transmission pin into the housing, an opening is provided on the side of the housing, and the opening is provided corresponding to the final gear.

[0015] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: an electric vertical curtain using the track switching device as described above, including a track for hanging a manually operated vertical curtain and a driving mechanism, the driving mechanism having an output shaft, characterized in that: the track switching device is arranged at the end of the track, the output shaft of the driving mechanism is connected to the input end of the transmission mechanism, and the driving mechanism is arranged on the side of the track, so that the output shaft and the track extend in the same direction.

[0016] Preferably, the transmission pin is arranged on the bottom surface of the end of the track and extends vertically downward, and the end of the track can penetrate into the shell, so that the transmission pin can be connected to the output end of the transmission mechanism.

[0017] Preferably, in order to facilitate stable connection between the output shaft of the drive mechanism and the transmission mechanism, a support end cover is provided on the side of the shell facing the drive mechanism, and the output shaft of the drive mechanism passes through the support end cover and is connected to the input end of the transmission mechanism.

[0018] Compared with the prior art, the advantages of the present invention are: a track adapter with a 90° turn can be provided, so that a manually operated track can be converted into an electrically operated track at a relatively low cost, without the need to re-select the track, and the installation is convenient; by providing the driving mechanism (power device) on the side of the track, the common vertical setting of the curtain motor is replaced, thereby avoiding the vertical curtain pieces on the track from colliding with the motor during movement and swinging due to external forces, and also improving the overall aesthetics of the electric curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of an electric vertical curtain according to an embodiment of the present invention (only a portion of the track is shown);

[0020] Figure 2 This is a schematic diagram of the exploded structure of the electric vertical curtain according to an embodiment of the present invention (only part of the track is shown);

[0021] Figure 3 is a schematic diagram of a track switching device according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a track according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the exploded structure of the track switching device according to an embodiment of the present invention (with the top cover hidden);

[0024] Figure 6 is a schematic diagram of a transmission mechanism of a track switching device according to an embodiment of the present invention;

[0025] Figure 7 It is a partial cross-sectional view of a track switching device and a track according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present utility model can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features.

[0028] See also Figure 1 and Figure 2 , an electric vertical curtain, comprising a track 1, a track adapter 2 and a driving mechanism 3, wherein the track 1 is the track of an existing manual vertical curtain, and the vertical curtain can be hung. In order to clearly illustrate the scheme of the present invention, only the end part of the track in the length direction is shown in the figure. In this embodiment, the driving mechanism 3 is a motor, which has an output shaft 31. The output shaft 31 extends in the lateral direction, preferably in the horizontal direction.

[0029] See also Figure 3 to Figure 7The track switching device 2 includes a housing 21, a transmission mechanism 22 and a transmission pin 23 arranged in the housing 21. The transmission pin 23 is arranged on the bottom surface of the end of the track 1 and extends vertically downward. The end transmission wheel of the common manual track does not have a transmission pin 23. The original transmission wheel can be replaced by a transmission wheel with a transmission pin 23 inserted, that is, the transmission wheel and the transmission pin can rotate coaxially, and the corresponding track end cover is replaced with a hole for the transmission pin 23 to pass through, so that the original manual track can meet the requirements of electric drive connection through simple transformation. The housing 21 can be hollow with an open top, and a top cover 24 is detachably arranged on the top to install the transmission mechanism 22 in the housing 21. A support end cover 25 is arranged on one side of the housing 21 (the side facing the track 1 in the installed state), and an opening 211 is opened on the same side adjacent to the support end cover 25. The size and shape of the opening 211 are adapted to the end of the track 1 so that the end of the track 1 can be inserted into the housing 21.

[0030] The transmission mechanism 22 adopts a transmission gear set, the input end of the transmission mechanism 22 is connected to the output shaft 31 of the driving mechanism 3 and the output end is connected to the transmission pin 23 on the track 1, thereby converting the rotation of the output shaft 31 on the vertical plane (the rotation axis is its own axis, which is horizontal) into the rotation of the transmission pin 23 on the horizontal plane (the rotation axis is its own axis, which is vertical).

[0031] Preferably, the transmission mechanism 22 includes a first bevel gear 221, a second bevel gear 222 and a spur gear set 223, and a primary gear 2231 of the spur gear set 223 is coaxially arranged with the second bevel gear 222. The first bevel gear 221 and the second bevel gear 222 are meshed with each other, the first bevel gear 221 has a first rotation axis 2211, the second bevel gear 222 has a second rotation axis 2221, the first rotation axis 2211 and the second rotation axis 2221 are perpendicular to each other, and in the installed state, the first rotation axis 2211 extends horizontally and is coaxial with the output shaft 31 of the driving mechanism 3, and the second rotation axis 2221 extends vertically and is parallel to the transmission pin 23.

[0032] The first rotating shaft 2211 can extend out of the housing 21 to the inside of the support end cover 25, and the output shaft 31 of the driving mechanism 3 extends into the support end cover 25. The support end cover 25 can support the output shaft 31 and the first rotating shaft 2211, so that the output shaft 31 and the first rotating shaft 2211 can rotate stably. The first rotating shaft 2211 is recessed toward one end of the output shaft 31 in a direction away from the output shaft 31 to form a first connecting groove 2212, and the output shaft 31 is inserted into the first connecting groove 2212 and fixed. Thus, the first connecting groove 2212 serves as the input end of the transmission mechanism 22, connecting the output shaft 31 and the transmission mechanism 22 to input power. Of course, the output shaft 31 and the first rotating shaft 2211 can also be directly connected in the housing 21.

[0033] The spur gear set 223 includes a primary gear 2231 receiving the input of the second bevel gear 222 and a final gear 2232 outputting the power. When the spur gear set 2231 has only one gear, the gear serves as both the primary gear and the final gear. In this embodiment, three gears are included. In addition to the above-mentioned primary gear 2231 and the final gear 2232, an intermediate gear 2233 is also included, which is arranged between the primary gear 2231 and the final gear 2232, and is respectively meshed with the primary gear 2231 and the final gear 2232, so as to transmit the rotation of the primary gear 2231 to the final gear 2232. The intermediate gear 2233 can be a single transmission gear or a transmission gear set, which is used to adjust the transmission ratio so that it can adapt to drive curtain tracks that require different magnitudes of force input. The rotating shafts of the gears of the spur gear set 223 can be rotatably connected to the housing 21, and the rotating shafts of the gears are all vertically extended. The opening 211 of the housing 21 is opened corresponding to the final gear 2232 , so that not only the track 1 but also the driving pin 23 can be inserted into the housing 21 .

[0034] The final gear 2232 is recessed from the outer side to the middle in the circumferential direction to form a second connection groove 2234, and the second connection groove 2234 is formed on the teeth of the final gear 2232. The end face of the final gear 2232 in the axial direction (the side opposite to the bottom face of the track 1, the upper end face in the installed state) is provided with an end plate 2235, and the second connection groove 2234 penetrates the end plate 2235 in the axial direction of the final gear 2232. The part of the end plate 2235 located at the outer periphery of the second connection groove 2234 is formed with a notch 2236, the outer side of the notch 2236 penetrates the outer peripheral edge of the end plate 2235, and the inner side of the notch 2236 is connected with the second connection groove 2234. The two sides of the notch 2236 in the circumferential direction gradually extend from the outside to the inside toward each other to form a trumpet-shaped notch 2236, so as to play a guiding role when the transmission pin 23 is inserted. Here, "outside" refers to the position close to the periphery, and "inside" refers to the position close to the middle.

[0035] The transmission pin 23 is a flat shaft, and the shape of the second connection groove 2234 is adapted to the transmission pin 23. Therefore, when the track switching device 2 is connected to the track 1, the end of the track 1 is inserted into the housing 21 from the opening 211 of the housing 21, and the transmission pin 23 enters the second connection groove 2234 along the notch 2236, and engages with the second connection groove 2234 to rotate synchronously with the final gear 2232. Therefore, the second connection groove 2234 serves as the output end of the transmission mechanism 22, connecting the transmission mechanism 22 with the transmission pin 23. The transmission pin 23 is used to connect with the gear shaft of the driving pulley initially provided in the track 1.

[0036] Through the track switching device 2, the driving mechanism 3 can be arranged on the side of the track 1 in parallel, so that the output shaft 31 extends in the same direction as the track 1. When the driving mechanism 3 is started, the first bevel gear 221 is driven to rotate through the output shaft 31, and the second gear 222 is turned, and the transmission pin 23 is driven to rotate through the spur gear set 223, thereby rotating the driving pulley in the track 1 to complete the opening and closing of the vertical curtain.

Claims

1. A track switching device, characterized in that: The invention comprises a housing (21), a transmission mechanism (22) arranged in the housing (21), and a transmission pin (23) used to cooperate with a track (1) for hanging a manually operated vertical curtain, wherein the transmission pin (23) is arranged on the bottom surface of the end of the track (1) and extends vertically downward, the input end of the transmission mechanism (22) is a power input end, the output end of the transmission mechanism (22) is connected to the transmission pin (23), and the rotation directions of the input end and the output end of the transmission mechanism (22) are perpendicular to each other.

2. The track switching device according to claim 1, characterized in that: The transmission mechanism (22) comprises a first bevel tooth (221), a second bevel tooth (222) and a spur gear set (223); the first bevel tooth (221) has a first rotating shaft (2211) as an input end of the transmission mechanism (22); the first bevel tooth (221) and the second bevel tooth (222) are meshed with each other; the spur gear set (223) comprises a primary gear (2231) and a final gear (2232); the primary gear (2231) is coaxially arranged with the second bevel tooth (222); and the final gear (2232) is connected to a transmission pin (23) and rotates synchronously.

3. The track switching device according to claim 2, characterized in that: The final gear (2232) is recessed from the circumferential outer side to the middle to form a second connecting groove (2234) serving as the output end of the transmission mechanism (22), and the transmission pin (23) can be inserted into the second connecting groove (2234).

4. The track switching device according to claim 3, characterized in that: The second connecting groove (2234) is formed on the teeth of the final-stage gear (2232), and the axial end face of the final-stage gear (2232) is provided with an end plate (2235). The second connecting groove (2234) penetrates the end plate (2235) in the axial direction of the final-stage gear (2232), and a notch (2236) is formed on the portion of the end plate (2235) located at the outer periphery of the second connecting groove (2234). The outer side of the notch (2236) penetrates the outer peripheral edge of the end plate (2235), and the inner side of the notch (2236) is connected to the second connecting groove (2234). The two sides of the notch (2236) in the circumferential direction gradually extend towards each other from the outside to the inside to form a trumpet shape.

5. The track switching device according to claim 3, characterized in that: The driving pin (23) is a flat shaft, and the shape of the second connecting groove (2234) is adapted to the driving pin (23).

6. The track switching device according to claim 2, characterized in that: The second bevel tooth (222) has a second rotation axis (2221), the first rotation axis (2211) and the second rotation axis (2221) are perpendicular to each other, and the second rotation axis (2221) is parallel to the transmission pin (23).

7. The track switching device according to claim 2, characterized in that: An opening (211) is provided on the side of the housing (21), and the opening (211) is provided corresponding to the final-stage gear (2232).

8. An electric vertical curtain using a track adapter as claimed in any one of claims 1 to 7, comprising a track (1) for hanging a manually operated vertical curtain and a driving mechanism (3), wherein the driving mechanism (3) has an output shaft (31), characterized in that: The track switching device is arranged at the end of the track (1), the output shaft (31) of the driving mechanism (3) is connected to the input end of the transmission mechanism (22), and the driving mechanism (3) is arranged on the side of the track (1), so that the output shaft (31) and the track (1) extend in the same direction.

9. The electric vertical blind according to claim 8, characterized in that: The transmission pin (23) is arranged on the bottom surface of the end of the track (1) and extends vertically downward. The end of the track (1) can penetrate into the housing (21), so that the transmission pin (23) can be connected to the output end of the transmission mechanism (22).

10. The electric vertical blind according to claim 8, characterized in that: A supporting end cover (25) is provided on the side of the housing (21) facing the driving mechanism (3), and the output shaft (31) of the driving mechanism (3) passes through the supporting end cover (25) and is connected to the input end of the transmission mechanism (22).

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