A motorized screen curtain

Abstract

The utility model relates to electric window curtain technical field discloses a kind of electric screen curtain, its technical scheme main point is including screen curtain track and power mechanism, power mechanism includes open and close curtain track, main transmission case, auxiliary transmission case and motor, motor, main transmission case, track and auxiliary transmission case are sequentially in straight line connection, auxiliary transmission case, open and close curtain track, main transmission case and motor are in straight line arrangement, parallel with screen curtain track, so that after being installed on curtain box as a whole, motor can be hidden;And without the part of main transmission case and the part of auxiliary transmission case are set in the both ends of screen curtain track, the length of screen curtain track can be extended, reduce the space occupied in the both ends of screen curtain track.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and more specifically to an electric screen curtain. Background Technology

[0002] Existing electric curtains include at least a motor, a transmission box, and a track. The motor is connected to the track via the transmission box, thereby driving the belt inside the track to move and realize the functions of opening and closing the curtain. Conventionally, the motor is equipped with a magnetic bead clutch mechanism, which uses parts such as magnetic beads, clutch components, and iron rings to achieve the function of a hand and flashlight in one. Existing electric screen curtains include a screen curtain track, with a main drive box and a secondary drive box connected to both ends of the track. The main drive box and the secondary drive box are relatively wide, which occupies space at both ends of the screen curtain track, thus limiting the length of the screen curtain track. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electric screen curtain that does not occupy the space at both ends of the screen curtain track.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an electric screen curtain, including a screen curtain track and a power mechanism. The power mechanism includes an opening and closing curtain track, a main transmission box, a secondary transmission box, and a motor. The motor, the main transmission box, the track, and the secondary transmission box are connected in a straight line and are arranged parallel to the screen curtain track. The motor is used to drive the connecting parts on the opening and closing curtain track to slide. The connecting parts are connected to the screen brackets on the adjacent screen curtain track.

[0005] As a further improvement of this utility model, the screen curtain track is slidably connected to the opening and closing curtain track.

[0006] As a further improvement of this utility model, two protrusions are formed at the end of the main transmission box, and through grooves are formed on both sides of the opening and closing curtain track, with the protrusions inserted into the corresponding through grooves.

[0007] As a further improvement of this utility model, the main transmission box includes a housing and a transmission mechanism. The transmission mechanism includes an input component, a belt gear, and a transmission assembly. The central axis of the input component is perpendicular to the central axis of the belt gear. The input component is connected to the belt gear through the transmission assembly. The input component and the belt gear are located at opposite ends of the housing.

[0008] As a further improvement of this utility model, the input component includes a first bevel gear or worm gear, and is connected to the transmission assembly in a transmission manner.

[0009] As a further improvement of this utility model, the transmission component includes a second bevel gear and a gear set. The second bevel gear meshes with the first bevel gear and is rotatably connected to the housing. The second bevel gear is connected to the belt gear through the gear set.

[0010] As a further improvement of this utility model, the gear set includes a first gear and a second gear, the first gear meshing with the second gear, the first gear being fixedly connected to the second bevel gear, and the second gear being coaxial with and drivingly connected to the belt gear.

[0011] As a further improvement of this utility model, a shaft is formed on the belt gear, and a plurality of circumferential grooves are formed outside the shaft. A plurality of circumferential protrusions are formed inside the second gear, and the circumferential protrusions are embedded in the corresponding circumferential grooves.

[0012] As a further improvement of this utility model, a magnetic bead clutch mechanism is provided between the belt gear and the transmission assembly or inside the motor.

[0013] As a further improvement of this utility model, a protrusion is formed at the end of the outer shell facing the motor, and a groove is formed at the end of the motor facing the main transmission box, and the protrusion is embedded in the groove.

[0014] The beneficial effects of this utility model are as follows: In this utility model, the auxiliary transmission box, the opening and closing curtain track, the main transmission box and the motor are arranged in a straight line and parallel to the screen curtain track, so that the motor can be hidden after the whole assembly is installed on the curtain box; and there is no need to set the main transmission box and the auxiliary transmission box at both ends of the screen curtain track, which can extend the length of the screen curtain track and reduce the space occupied at both ends of the screen curtain track. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the connection between the screen curtain track and the opening and closing curtain track in this utility model; Figure 3 This is a schematic diagram of the connection between the opening and closing curtain track and the screen bracket in this utility model; Figure 4 This is a schematic diagram of the auxiliary transmission box in this utility model; Figure 5 This is a schematic diagram of the structure of the motor in this utility model; Figure 6 This is a schematic diagram of the main transmission box in this utility model; Figure 7 This is a top view of the main transmission box in this utility model; Figure 8 This is a utility model Figure 7 A cross-sectional view along the AA direction; Figure 9 This is a schematic diagram of the internal mechanism of the main transmission box in this utility model; Figure 10 This is a schematic diagram of the shell structure in this utility model; Figure 11 This is a structural schematic diagram of the transmission mechanism in this utility model; Figure 12 This is a schematic diagram of the structure of the partition plate of this utility model; Figure 13 This is a schematic diagram of the structure of the second gear in this utility model; Figure 14 This is a schematic diagram of the belt gear structure in this utility model.

[0016] Reference numerals: 1. Screen curtain track; 11. Screen bracket; 2. Opening and closing curtain track; 21. Connector; 22. Through groove; 3. Main transmission box; 31. Protrusion; 32. Housing; 321. Protrusion; 33. Input component; 34. Belt gear; 341. Shaft; 342. Circumferential groove; 35. Second bevel gear; 36. Gear set; 361. First gear; 362. Second gear; 363. Circumferential protrusion; 4. Secondary transmission box; 5. Motor; 51. Slot. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0018] Reference Figures 1 to 14 As shown, an electric screen curtain in this embodiment includes a screen curtain track 1 and a power mechanism. The power mechanism includes an opening and closing curtain track 2, a main transmission box 3, a secondary transmission box 4, and a motor 5. The motor 5, the main transmission box 3, the track, and the secondary transmission box 4 are connected in a straight line and are arranged parallel to the screen curtain track 1. The main transmission box 3 and the secondary transmission box 4 are respectively connected to both ends of the opening and closing curtain track 2. The main transmission box 3 is also connected to the motor 5. In this embodiment, the end of the main transmission box 3 facing away from the opening and closing curtain track 2 is connected to the motor 5. The motor 5 drives the belt to move through the main transmission box 3. The motor 5 and the main drive box 3 are detachably connected by a latch; Motor 5 is used to drive the connector 21 on the opening and closing curtain track 2 to slide. The connector 21 is connected to the screen bracket 11 on the adjacent screen curtain track 1. The belt and the connector 21 are detachably connected. After the connector 21 is installed on the belt, it slides on the opening and closing curtain track 2 as the belt moves. The connector 21 moves along the length of the track, that is, away from or close to the main drive box 3. Reference Figure 3 As shown, a fastener is formed on the connector 21, and a slot is provided on an adjacent screen bracket 11. The fastener is fastened to the slot. The fastener has elastic deformation capability, which can realize the detachable connection between the connector 21 and the screen bracket 11. When the connector 21 moves, it will drive the adjacent screen bracket 11 to move; wherein, the screen curtain track 1 is provided with multiple sliding grooves, and two sliders are slidably connected in each sliding groove, and the screen bracket 11 is fixedly connected to the two sliders in the corresponding sliding groove. A push block is formed on one of the sliders. The push block is located between the two sliders. When the first screen bracket 11 moves, the push block moves with the slider. When the push block moves to the position of one of the sliders of the next screen bracket 11, it will abut against the slider, thereby driving the next screen bracket 11 to move. In the prior art, at least a portion of both the main drive box 3 and the auxiliary drive box 4 are connected to the end of the screen curtain track 1. In this embodiment, the auxiliary drive box 4, the opening and closing curtain track 2, the main drive box 3, and the motor 5 are arranged in a straight line, parallel to the screen curtain track 1, so that the motor 5 can be hidden after the whole assembly is installed on the curtain box. Furthermore, it is not necessary to set a portion of the main drive box 3 and a portion of the auxiliary drive box 4 at both ends of the screen curtain track 1, which can extend the length of the screen curtain track 1 and reduce the space occupied at both ends of the screen curtain track 1.

[0019] Reference Figure 2 As shown, the screen curtain track 1 and the opening and closing curtain track 2 are slidably connected. The screen curtain track 1 has a first protruding strip on its side, and the opening and closing curtain track 2 has two second protruding strips on its side. A positioning groove is formed between the two second protruding strips, and the first protruding strip is inserted into the positioning groove. In addition, two L-shaped first hooks are formed on the side of the screen curtain track 1, located at the top and bottom of the side of the screen curtain track 1 respectively; two L-shaped second hooks are also formed on the side of the opening and closing curtain track 2, located at the top and bottom of the side of the opening and closing curtain track 2 respectively; the first hooks are connected to the corresponding second hooks, and the openings of the first hooks and the connected second hooks face each other.

[0020] Reference Figure 2 , Figure 6As shown, two protrusions 31 are formed at the end of the main drive box 3, and through slots 22 are formed on both sides of the opening and closing curtain track 2. The protrusions 31 are inserted into the corresponding through slots 22. The protrusions 31 are located at the end of the main drive box 3 facing the opening and closing curtain track 2, and the two protrusions 31 are located on both sides of the end, forming the connection and positioning between the main drive box 3 and the opening and closing curtain track 2. Two protrusions 31 are also formed at the end of the auxiliary drive box 4 facing the opening and closing curtain track 2, and they are also inserted into the corresponding through slots 22, forming the positioning between the auxiliary drive box 4 and the opening and closing curtain track 2. A first connecting section is also provided at the end of the main drive box 3 facing the opening and closing curtain track 2. The first connecting section is located above the two protrusions 31 on the main drive box 3. A connecting groove is provided on the top of the opening and closing curtain track 2. The first connecting section is inserted into the connecting groove to form a positioning connection. A threaded hole is provided on the first connecting section, and the main drive box 3 and the opening and closing curtain track 2 are fixed by screws. Reference Figure 4 As shown, a second connecting section is also provided at the end of the auxiliary transmission box 4 facing the opening and closing curtain track 2. The second connecting section is located above the two protrusions 31 on the auxiliary transmission box 4. The second connecting section is inserted into the connecting groove to form a positioning connection. The second connecting section is also provided with threaded holes, and the auxiliary transmission box 4 and the opening and closing curtain track 2 are fixed by screws.

[0021] Reference Figures 6 to 14 As shown, the main transmission box 3 includes a housing 32 and a transmission mechanism, which includes an input component 33, a belt and gear 34, and a transmission assembly. When the input component 33 includes a worm gear, the input component 33 extends out of the housing 32. The part of the input component 33 that extends out of the housing 32 can be a polygonal rod. Preferably, the polygonal rod can be a square rod, a pentagonal rod, or a hexagonal rod. A hole corresponding to the polygonal rod is provided on the output end of the motor 5, and power transmission is achieved by plugging in. Of course, when the input component 33 includes a worm gear, the input component 332 can also have holes, and the output end of the motor 5 can be formed into a four-cornered rod, a five-cornered rod, or a hexagonal rod, etc.

[0022] When the input component 33 includes a gear, the gear can be a bevel gear. Similarly, a polygonal rod or hole can be formed on the bevel gear to connect to the motor 5.

[0023] The belt gear 34 is used to connect the drive belt. A driven gear is rotatably connected inside the auxiliary transmission box 4. The drive belt passes through the track and is connected between the belt gear 34 and the driven gear. When the drive belt moves, it drives the curtain to open and close. Two connection ports are opened on the outer casing 32 near the end of the belt gear 34. The drive belt passes through the two connection ports to carry out the transmission. Correspondingly, two connection ports are also opened on the auxiliary transmission box 4.

[0024] The central axis of the input component 33 is perpendicular to the central axis of the belt gear 34. The input component 33 is connected to the belt gear 34 through a transmission assembly. The input component 33 and the belt gear 34 are located at opposite ends of the housing 32.

[0025] Combined with the direction of the transmission belt driving the curtain to slide, the central axis of the belt gear 34 is perpendicular to the horizontal direction, that is, it is set vertically, and the central axis of the input component 33 is set horizontally; the opening and closing curtain track 2 and the motor 5 are respectively located on the left and right sides of the main transmission box 3, so that the opening and closing curtain track 2, the motor 5 and the main transmission box 3 are set in a straight line. The opening and closing curtain track 2, the motor 5 and the main transmission box 3 are combined into a straight line as a whole, which can be installed as a whole on one side of the screen curtain track 1. The whole is set parallel to the screen curtain track 1, without the need to connect the transmission box to the two ends of the screen curtain transmission track. The screen curtain track 1 can be regarded as a separate whole.

[0026] Reference Figure 8 , Figure 9 , Figure 11 As shown, the input component 33 includes a first bevel gear or worm gear and is connected to the transmission assembly for transmission.

[0027] In one embodiment, the input component 33 includes a worm gear, the transmission component includes a worm wheel, the worm wheel meshes with the worm gear to realize transmission, the central axis of the worm wheel is vertically arranged, and at least one transmission gear is included between the worm wheel and the belt gear 34; Preferably, two transmission gears are provided. One transmission gear is coaxially rotatably connected to the worm gear, and the other transmission gear is coaxially connected to the belt gear 34. The two transmission gears mesh with each other. In a preferred embodiment, the input component 33 includes a first bevel gear, which is connected to the transmission assembly. In this embodiment, the transmission assembly includes a second bevel gear 35, which meshes with the first bevel gear. The power reversal is achieved through the first bevel gear and the second bevel gear 35. Compared with the worm gear design, the first bevel gear and the second bevel gear 35 are better positioned.

[0028] Specifically, a hexagonal rod is integrally formed on the first bevel gear, and the hexagonal rod extends out of the outer shell 32 and is connected to the motor 5 for transmission.

[0029] Reference Figure 9 and Figure 11 As shown, the transmission assembly includes a second bevel gear 35 and a gear set 36. The second bevel gear 35 meshes with the first bevel gear and is rotatably connected inside the housing 32. The second bevel gear 35 is connected to the belt gear 34 via the gear set 36. In this configuration, the gear set 36 includes at least two transmission gears, one of which is fixedly connected to the second bevel gear 35 and the other is fixedly connected to the belt gear 34. The two transmission gears mesh with each other. Multiple gears can be set between the two transmission gears. The number of teeth on the two transmission gears can be the same or different.

[0030] Preferably, the gear set 36 includes a first gear 361 and a second gear 362. The first gear 361 meshes with the second gear 362. The first gear 361 is fixedly connected to the second bevel gear 35. The second gear 362 is coaxial with the belt gear 34 and is connected for transmission. The first gear 361 and the second gear 362 represent two transmission gears. In this embodiment, the first gear 361 and the second bevel gear 35 are integrally formed. The second gear 362 is coaxial with the belt gear 34 and is connected for transmission. The second gear 362 and the belt gear 34 are inserted into each other.

[0031] Reference Figure 13 and Figure 14 As shown, a shaft 341 is formed on the belt gear 34, and a plurality of circumferential grooves 342 are provided on the outside of the shaft 341. A plurality of circumferential protrusions 363 are formed inside the second gear 362, and the circumferential protrusions 363 are embedded in the corresponding circumferential grooves 342. The circumferential groove 342 and the circumferential protrusion 363 enable the insertion connection between the shaft 341 and the second gear 362, and enable the power transmission between the belt gear 34 and the second gear 362.

[0032] The outer casing 32 includes a cover plate and a housing, which are detachably connected by screws. The inner side of the cover plate has a plurality of first pillars. In this embodiment, two first pillars are provided. A first limiting groove is provided on the first gear 361, and a first column is inserted into the first limiting groove to form the rotational positioning of the second bevel gear 35 and the first gear 361; A second limiting groove is provided at the end of the shaft 341, and another first column is inserted into the second limiting groove to form the rotational positioning of the belt gear 34. A second column is formed at the bottom of the housing, and a third limiting groove is provided on the belt gear 343. The second column is inserted into the third limiting groove and cooperates with the first column to form the rotational positioning of the belt gear 34.

[0033] A partition is detachably connected inside the housing 32 to separate the second gear 362 from the belt gear 34, forming an upper cavity and a lower cavity inside the housing 32. The second gear 362 and the first gear 361 are located in the upper cavity, and the belt gear 34 is located in the lower cavity. The partition is provided with a notch to facilitate the meshing of the first bevel gear and the second bevel gear 35 and prevent interference.

[0034] Reference Figure 10As shown, a barrier is provided between the belt gear 34 and the first bevel gear. The barrier is arc-shaped to prevent the belt from loosening with the belt gear 34.

[0035] A magnetic bead clutch mechanism is provided between the belt gear 34 and the transmission assembly or inside the motor 5; Preferably, the magnetic bead clutch mechanism is disposed inside the motor 5. The motor 5 includes a motor and a reducer. The motor and the reducer are connected in a transmission connection. The magnetic bead clutch mechanism is disposed between the output end of the reducer and the output end of the motor 5. Alternatively, the magnetic bead clutch mechanism can be positioned between the belt gear 34 and the transmission assembly; The magnetic bead clutch mechanism includes an iron ring, two magnetic beads, and a clutch component. Specifically, the iron ring can be fixedly connected to one end of the partition plate facing the belt gear 34. The belt gear 34 has a clutch cavity on one side facing the partition plate. The clutch component is fixedly connected to the shaft 341 and located in the clutch cavity. The two magnetic beads are attracted to the iron ring and are located on opposite sides of the clutch component. Two grooves are opened on the inner wall of the clutch cavity, and the grooves are adapted to the magnetic beads. When the motor 5 starts and drives the first bevel gear to rotate, the first bevel gear drives the shaft 341 to rotate through the second bevel gear 35, the first gear 361 and the second gear 362. This causes the shaft 341 to drive the clutch to rotate. The clutch pushes the magnetic bead to be stuck in the corresponding groove, so that the clutch can drive the belt gear 34 to rotate through the magnetic bead, thus realizing the function of transmitting the power of the motor 5 to the belt gear 34. When motor 5 is not working, and the curtain is manually pulled, belt gear 34 rotates. At this time, the magnetic bead is attracted to the iron ring and detached from the groove. Belt gear 34 rotates independently, and power is not transmitted to shaft 341; thus realizing the function of hand and flashlight integration.

[0036] Reference Figure 5 and Figure 6 As shown, a protrusion 321 is formed at the end of the outer casing 32 facing the motor 5, and a groove 51 is formed at the end of the motor 5 facing the main transmission box 3, with the protrusion 321 embedded in the groove 51.

[0037] A circular groove is formed in the protrusion 321, and a bearing is provided in the circular groove. The bearing is fixedly connected to the input component 33. A first protrusion is formed at the end of the cover plate, and a second protrusion is formed at the end of the housing. The first and second protrusions are connected to form the protrusion 321. A recess is formed on the motor 5, and a protrusion is embedded in the recess to form a positioning fit between the transmission box and the motor 5. The bearing configuration can increase the rotational stability of the input component 33.

[0038] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An electric screen curtain, characterized in that: The device includes a screen curtain track (1) and a power mechanism. The power mechanism includes an opening and closing curtain track (2), a main transmission box (3), a secondary transmission box (4), and a motor (5). The motor (5), the main transmission box (3), the track, and the secondary transmission box (4) are connected in a straight line and are arranged parallel to the screen curtain track (1). The motor (5) is used to drive the connecting piece (21) on the opening and closing curtain track (2) to slide. The connecting piece (21) is connected to the screen bracket (11) on the adjacent screen curtain track (1).

2. The electric screen curtain according to claim 1, characterized in that: The screen curtain track (1) is slidably connected to the opening and closing curtain track (2).

3. The electric screen curtain according to claim 1, characterized in that: The end of the main drive box (3) has two protrusions (31), and the opening and closing curtain track (2) has through grooves (22) on both sides opposite to each other. The protrusions (31) are inserted into the corresponding through grooves (22).

4. The electric screen curtain according to claim 1, characterized in that: The main transmission box (3) includes a housing (32) and a transmission mechanism. The transmission mechanism includes an input component (33), a belt gear (34), and a transmission assembly. The central axis of the input component (33) is perpendicular to the central axis of the belt gear (34). The input component (33) is connected to the belt gear (34) through the transmission assembly. The input component (33) and the belt gear (34) are located at opposite ends of the housing (32).

5. An electric screen curtain according to claim 4, characterized in that: The input component (33) includes a first bevel gear or worm gear and is connected to the transmission assembly in a transmission manner.

6. An electric screen curtain according to claim 5, characterized in that: The transmission assembly includes a second bevel gear (35) and a gear set (36). The second bevel gear (35) meshes with the first bevel gear and is rotatably connected to the housing (32). The second bevel gear (35) is connected to the belt gear (34) through the gear set (36).

7. An electric screen curtain according to claim 6, characterized in that: The gear set (36) includes a first gear (361) and a second gear (362). The first gear (361) meshes with the second gear (362). The first gear (361) is fixedly connected to the second bevel gear (35). The second gear (362) is coaxial with the belt gear (34) and is connected in a transmission manner.

8. An electric screen curtain according to claim 7, characterized in that: A shaft (341) is formed on the belt gear (34), and a plurality of circumferential grooves (342) are provided on the outside of the shaft (341). A plurality of circumferential protrusions (363) are formed inside the second gear (362), and the circumferential protrusions (363) are embedded in the corresponding circumferential grooves (342).

9. An electric screen curtain according to claim 4, characterized in that: A magnetic bead clutch mechanism is provided between the belt gear (34) and the transmission assembly or inside the motor (5).

10. An electric screen curtain according to claim 4, characterized in that: The outer casing (32) has a protrusion (321) at one end facing the motor (5), and the motor (5) has a groove (51) at one end facing the main transmission box (3), and the protrusion (321) is embedded in the groove (51).

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