Screen curtain transmission case

Abstract

The utility model relates to the technical field of curtains, and discloses a screen curtain transmission case which is characterized by comprising a shell and a transmission mechanism, the transmission mechanism comprises an input part, a belt gear and a transmission assembly, the central axis of the input part is perpendicular to the central axis of the belt gear, and the input part is in transmission connection with the belt gear through the transmission assembly. The track and the motor are located on the left side and the right side of the transmission box respectively, the track, the motor and the transmission box are combined into a linear whole, and the linear whole can be integrally installed on one side of a screen curtain transmission track and is parallel to the screen curtain transmission track. The transmission case does not need to be connected with the two ends of the transmission track of the screen curtain, and the transmission track of the screen curtain can be regarded as an independent whole.

Description

Technical Field

[0001] This utility model relates to the field of curtain technology, and more specifically to a screen curtain transmission box. 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.

[0003] 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.

[0004] There are two installation methods for the motor: vertical and horizontal. When the motor is installed vertically, it is perpendicular to the transmission box, and the transmission box is aligned with the track. When the motor is installed horizontally, it is parallel to the track, and both the track and the motor are perpendicular to the transmission box. Traditional transmission boxes make it difficult to align the track and the motor in a straight line. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a screen curtain transmission box for realizing the straight-line setting of the track, the transmission box and the track.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screen curtain transmission box for connecting a motor and a track, comprising a housing and a transmission mechanism, wherein 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 via the transmission assembly, and the input component and the belt gear are respectively located at both ends of the housing so that the track, motor, and transmission box are in a straight line.

[0007] As a further improvement of this utility model, the input component includes a worm gear, which is connected to the transmission assembly in a transmission manner.

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

[0009] As a further improvement of this utility model, the input component is provided with a transmission groove or has an input shaft.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] As a further improvement of this utility model, a partition is detachably connected inside the housing to separate the second gear from the belt gear.

[0014] As a further improvement of this utility model, a protrusion is formed at the end of the outer shell facing the motor, a circular groove is formed in the protrusion, a bearing is provided in the circular groove, and the bearing is fixedly connected to the input component.

[0015] As a further improvement of this utility model, a magnetic bead clutch mechanism is provided between the belt gear and the transmission assembly.

[0016] The beneficial effects of this utility model are as follows: In this utility model, the track and motor are located on the left and right sides of the transmission box, respectively. The track, motor and transmission box are combined into a straight line and can be installed as a whole on one side of the screen curtain transmission track, and the whole is set parallel to the screen curtain transmission track. There is no need to connect the transmission box to both ends of the screen curtain transmission track, and the screen curtain transmission track can be regarded as a separate whole. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a utility model Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the shell structure in this utility model.

[0022] Reference numerals: 1. Outer shell; 11. Partition plate; 12. Protrusion; 13. Circular groove; 14. Bearing; 2. Input component; 3. Belt gear; 41. Second bevel gear; 42. Gear set; 421. First gear; 422. Second gear. Detailed Implementation

[0023] 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.

[0024] Reference Figure 1 , Figure 2 and Figure 3 As shown, a screen curtain transmission box in this embodiment is used to connect a motor and a track. It includes a housing 1 and a transmission mechanism. The transmission mechanism includes an input component 2, a belt gear 3 and a transmission assembly. The input component 2 can be a worm gear or a gear.

[0025] When the input component 2 includes a worm gear, the input component 2 extends out of the outer shell 1. The part of the input component 2 that extends out of the outer shell 1 can be a polygonal rod, preferably a square rod, a pentagonal rod, or a hexagonal rod. The output end of the motor is provided with a hole corresponding to the polygonal rod to facilitate transmission connection.

[0026] Of course, when the input component 2 includes a worm gear, the input component 2 can also have holes, and the output end of the motor can be formed into a four-cornered rod, a five-cornered rod, or a hexagonal rod, etc.

[0027] When input component 2 includes a gear, the gear can be a bevel gear. Similarly, polygonal rods or holes can be formed on the bevel gear to connect to the motor.

[0028] The belt gear 3 is used to connect the transmission belt, which passes through the track. When the transmission belt moves, it drives the curtain to open and close. Two slots are opened on the outer casing 1 near the end of the belt gear 3, and the transmission belt passes through the two slots to carry out the transmission.

[0029] The central axis of input component 2 is perpendicular to the central axis of belt gear 3. Combined with the direction of the opening and closing of the curtain driven by the transmission belt, the central axis of belt gear 3 is perpendicular to the horizontal direction, that is, it is set vertically, while the central axis of input component 2 is set horizontally.

[0030] Input component 2 is connected to belt gear 3 via a transmission assembly. Input component 2 and belt gear 3 are located at opposite ends of housing 1, while the track and motor are located on the left and right sides of the transmission box, respectively, so that the track, motor, and transmission box are in a straight line. The track, motor, and transmission box are combined into a straight line and can be installed as a whole on one side of the screen curtain transmission track, with the whole set parallel to the screen curtain transmission track. There is no need to connect the transmission box to both ends of the screen curtain transmission track, and the screen curtain transmission track can be regarded as a separate whole.

[0031] In one embodiment, the input component 2 includes a worm gear, which is connected to a transmission assembly. The worm gear can extend out of the housing 1 and be connected to the output end of the motor. At this time, the transmission assembly includes a worm wheel, which 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 3.

[0032] Preferably, two transmission gears are provided. One transmission gear is coaxially connected to the worm gear, and the other transmission gear is coaxially connected to the belt gear 3. The two transmission gears mesh with each other, which allows for better design from the perspective of the space inside the housing 1.

[0033] In a preferred embodiment, refer to Figure 3 , Figure 4 As shown, the input component 2 includes a first bevel gear, which is connected to the transmission assembly. At this time, the transmission assembly includes a second bevel gear 41. The first bevel gear and the second bevel gear 41 mesh, and the power is reversed through the first bevel gear and the second bevel gear 41. Compared with the design of worm gear, the design of the first bevel gear and the second bevel gear is better arranged.

[0034] Specifically, a hexagonal rod is integrally formed on the first bevel gear, and the hexagonal rod extends out of the outer shell 1 to cooperate with the motor to realize transmission.

[0035] Reference Figure 1 As shown, the input component 2 has a transmission groove or an input shaft, wherein the hole is the transmission groove. Preferably, the input component 2 is a combination structure of a first bevel gear and a hexagonal rod.

[0036] Preferably, the transmission assembly includes a second bevel gear 41 and a gear set 42. The second bevel gear 41 meshes with the first bevel gear and is rotatably connected to the housing 1. The input direction and output direction are reversed through the first bevel gear and the second bevel gear 41. The second bevel gear 41 is connected to the belt gear 3 through the gear set 42. In this configuration, the gear set 42 includes at least two transmission gears, one of which is fixedly connected to the second bevel gear 41 and the other is fixedly connected to the belt gear 3. The two transmission gears mesh.

[0037] Of course, multiple gears can be set between the two transmission gears, and a gear reduction group can be set between the two transmission gears;

[0038] The two transmission gears can have the same number of teeth or different numbers of teeth.

[0039] Preferably, the gear set 42 includes a first gear 421 and a second gear 422, which represent two transmission gears. The first gear 421 meshes with the second gear 422, and the first gear 421 is fixedly connected to the second bevel gear 41. In this embodiment, the first gear 421 and the second bevel gear 41 are integrally formed, and the second gear 422 is coaxial with the belt gear 3 and is connected for transmission. The second gear 422 is inserted into the belt gear 3.

[0040] Reference Figure 3 As shown, a shaft is formed on the belt gear 3, and multiple circumferential grooves are formed outside the shaft. Multiple circumferential protrusions are formed inside the second gear 422, and the circumferential protrusions are embedded in the corresponding circumferential grooves.

[0041] Reference Figure 4 As shown, the circumferential groove and circumferential protrusion enable plug-in connection and power transmission between the belt gear 3 and the second gear 422.

[0042] Reference Figure 3 , Figure 5 As shown, the outer casing 1 includes a cover plate and a housing, which are detachably connected by screws. A plurality of first pillars are formed on the inner side of the cover plate. In this embodiment, two first pillars are provided.

[0043] A first limiting groove is provided on the first gear 421, and a first column is inserted into the first limiting groove to form the rotational positioning of the second bevel gear 41 and the first gear 421.

[0044] A second limiting groove is provided at the end of the shaft, and another first column is inserted into the second limiting groove to form the rotational positioning of the belt gear 3;

[0045] A second column is formed at the bottom of the housing, and a third limiting groove is provided on the belt gear 3. The second column is inserted into the third limiting groove and cooperates with the first column to form the rotation positioning of the belt gear 3.

[0046] Reference Figure 3 , Figure 4 As shown, a partition 11 is detachably connected inside the outer casing 1 to separate the second gear 422 and the belt gear 3, forming an upper cavity and a lower cavity inside the outer casing 1. The second gear 422 and the first gear 421 are located in the upper cavity, and the belt gear 3 is located in the lower cavity. The partition 11 is provided with a notch to facilitate the meshing of the first bevel gear and the second bevel gear 41 and prevent interference.

[0047] Reference Figure 5 As shown, a barrier is provided between the belt gear 3 and the first bevel gear. The barrier is arc-shaped to prevent the belt from loosening with the belt gear 3.

[0048] Reference Figure 1 , Figure 4 , Figure 5 As shown, a protrusion 12 is formed at the end of the outer casing 1 facing the motor, a circular groove 13 is formed in the protrusion 12, a bearing 14 is provided in the circular groove 13, and the bearing 14 is fixedly connected to the input component 2. A first protrusion is formed at the end of the cover plate, and a second protrusion is formed at the end of the casing. The first protrusion and the second protrusion are connected to form the protrusion 12.

[0049] A recess is formed on the motor, and a protrusion is embedded in the recess to form a positioning fit between the transmission box and the motor;

[0050] The bearing 14 can increase the rotational stability of the input component 2.

[0051] Reference Figure 1 As shown, the end of the outer casing 1 facing the track has two oppositely arranged protrusions. The protrusions can be inserted into the track to form a positioning between the outer casing 1 and the track.

[0052] A magnetic bead clutch mechanism is provided between the belt gear 3 and the transmission assembly;

[0053] 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 11 facing the belt gear 3. The belt gear 3 has a clutch cavity on one side facing the partition 11. The clutch component is fixedly connected to the shaft 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.

[0054] When the motor starts and drives the first bevel gear to rotate, the first bevel gear drives the shaft to rotate through the second bevel gear 41, the first gear 421 and the second gear 422, thereby causing the shaft 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 3 to rotate through the magnetic bead, realizing the function of transmitting the power of the motor to the belt gear 3.

[0055] When the motor is not working and the curtain is manually pulled, the belt gear 3 rotates. At this time, the magnetic bead is attracted to the iron ring and detached from the groove. The belt gear 3 rotates independently, and the power is not transmitted to the shaft; thus realizing the function of a hand and a flashlight.

[0056] 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. A screen curtain transmission box for connecting a motor with a track, characterized in that: The utility model provides a transmission mechanism of trackless train, including shell (1) and transmission mechanism, the transmission mechanism includes input (2), belt gear (3) and transmission assembly, the central axis of input (2) is perpendicular with the central axis of belt gear (3), input (2) is drivenly connected with belt gear (3) through transmission assembly, and input (2) and belt gear (3) are located respectively at both ends of shell (1) to make track, motor and transmission box be in line.

2. A screen curtain transmission box according to claim 1, characterized in that: The input (2) includes a worm, and the worm is drivingly connected with the transmission assembly.

3. A screen curtain transmission box according to claim 1, characterized in that: The input (2) includes a first bevel gear, and the first bevel gear is drivingly connected with the transmission assembly.

4. A screen curtain transmission box according to any one of claims 1 to 3, characterized in that: The input (2) is provided with a transmission groove or an input shaft.

5. A screen curtain transmission box according to claim 3, wherein: The transmission assembly includes a second bevel gear (41) and a gear set (42), the second bevel gear (41) is engaged with the first bevel gear and rotationally connected in the shell (1), and the second bevel gear (41) is drivingly connected with the belt gear (3) through the gear set (42).

6. A screen curtain transmission box according to claim 5, wherein: The gear set (42) includes a first gear (421) and a second gear (422), the first gear (421) is engaged with the second gear (422), the first gear (421) is fixedly connected with the second bevel gear (41), and the second gear (422) is coaxial with and drivingly connected with the belt gear (3).

7. A screen curtain transmission box according to claim 6, characterised in that: The belt gear (3) is provided with an axle body, a plurality of circumferential clamping grooves are formed on the axle body, a plurality of circumferential protrusions are formed in the second gear (422), and the circumferential protrusions are embedded in the corresponding circumferential clamping grooves.

8. A screen curtain transmission box according to claim 6, characterized in that: The shell (1) is detachably connected with a partition plate (11) to separate the second gear (422) and the belt gear (3).

9. A screen curtain transmission box according to claim 1, characterized in that: The shell (1) is provided with a convex portion (12) at one end facing the motor, a circular groove (13) is formed in the convex portion (12), a bearing (14) is arranged in the circular groove (13), and the bearing (14) is fixedly connected with the input (2).

10. A screen curtain transmission box according to claim 1, characterized in that: A magnetic bead clutch mechanism is arranged between the belt gear (3) and the transmission assembly.

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