A power output switching component and an electric curtain

Abstract

This utility model relates to the field of electric curtain technology, and discloses a power output switching component and an electric curtain. The key technical point is that it includes a power rod and a first transmission gear and a second transmission gear arranged coaxially. The first transmission gear and the second transmission gear are hollow and connected to form an inner cavity. A first toothed ring is formed inside the first transmission gear. The setting of the movable area limits the maximum interval distance between the first gear and the second gear. The interval distance between the first toothed ring and the second toothed ring is greater than the length of the movable area, so that when the first gear and the second gear are located between the first toothed ring and the second toothed ring, the first gear is not engaged with the first toothed ring, and the second gear is not engaged with the second toothed ring. At this time, both the first transmission gear and the second transmission gear can rotate with the movement of the curtain, realizing the manual mode of the left and right curtains, and acting as a clutch function.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and more specifically to a power output switching component and an electric curtain. Background Technology

[0002] Electric curtains are used to realize the electric control of the opening and closing of the curtains. The curtains include a left curtain and a right curtain. In order to realize the single control and double control functions of the left and right curtains, the curtain motor is equipped with dual outputs. The dual outputs control the left and right curtains respectively. Taking the left curtain as an example, a pulley is connected to the transmission belt. The pulley is connected to one end of the left curtain, and the other end of the left curtain is connected to the tail hook.

[0003] If the left curtain is connected to one end of the tail hook so that it is also connected to the trolley, then another drive belt is needed. Thus, one set of outputs needs to be set with two drive belts. The power switching between the two drive belts is achieved by moving the output end. However, in the case of manual mode, the clutch mechanism needs to be set in another position on the curtain motor or transmission box. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a power output switching component and an electric curtain for realizing the clutch function.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a power output switching component, including a power rod and a first transmission gear and a second transmission gear coaxially arranged. The first transmission gear and the second transmission gear are hollow and connected to form an inner cavity. A first toothed ring is formed inside the first transmission gear, and a second toothed ring is formed inside the second transmission gear. The power rod extends into the inner cavity and forms a movable area. The first gear and the second gear are sleeved on and meshed on the power rod and are located within the movable area. An elastic element abuts between the first gear and the second gear. The distance between the first toothed ring and the second toothed ring is greater than the length of the movable area.

[0006] As a further improvement of this utility model, a retaining ring is formed on the power rod, and a fastener is fixedly connected to one end of the power rod. The movable area is formed between the retaining ring and the fastener.

[0007] As a further improvement of this utility model, the elastic element is a compression spring.

[0008] As a further improvement of this utility model, a first convex ring is formed on the side of the first gear facing the second gear, and a second convex ring is formed on the side of the second gear facing the first gear. The elastic element is sleeved on the first convex ring and the second convex ring.

[0009] As a further improvement of this utility model, magnetic rings are fixedly connected to both the first transmission gear and the second transmission gear.

[0010] As a further improvement of this utility model, spline holes are provided in both the first gear and the second gear.

[0011] An electric curtain includes at least one set of the aforementioned power output switching components.

[0012] As a further improvement of this utility model, it includes a transmission box, on which a support rod is formed, and a insertion hole is provided on the power rod, into which the support rod is inserted.

[0013] As a further improvement of this utility model, a circuit board is provided on the transmission box, and a pin header is electrically connected to the circuit board, the pin header extending out of the transmission box.

[0014] As a further improvement of this utility model, multiple Hall sensors are electrically connected to the circuit board.

[0015] The beneficial effects of this utility model are as follows: The setting of the active area in this utility model limits the maximum interval between the first gear and the second gear. The interval between the first gear ring and the second gear ring is greater than the length of the active area, so that when the first gear and the second gear are located between the first gear ring and the second gear ring, the first gear is not engaged with the first gear ring, and the second gear is not engaged with the second gear ring. At this time, both the first transmission gear and the second transmission gear can rotate with the movement of the curtain, realizing the manual mode of the left and right curtains, and playing a clutch function. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention installed in the transmission box;

[0017] Figure 2 This is a schematic diagram of the structure of the two sets of power output switching components and circuit boards in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a power output switching component in this utility model;

[0019] Figure 4 This is a utility model Figure 3 Sectional view in;

[0020] Figure 5 This is a schematic diagram of the structure of the first transmission gear in this utility model;

[0021] Figure 6 This is a schematic diagram of the power rod structure in this utility model;

[0022] Figure 7This is a schematic diagram of the structure of the first gear in this utility model.

[0023] Reference numerals: 1. Power rod; 11. Retaining ring; 12. Fastener; 13. Insertion hole; 2. First transmission gear; 21. First gear ring; 3. Second transmission gear; 31. Second gear ring; 4. Moving area; 5. First gear; 51. First convex ring; 6. Second gear; 61. Second convex ring; 7. Elastic element; 8. Magnetic ring; 9. Transmission box; 91. Support rod; 92. Circuit board; 93. Pin header. Detailed Implementation

[0024] 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.

[0025] Reference Figures 1 to 7 As shown, a power output switching component in this embodiment includes a power rod 1 and a first transmission gear 2 and a second transmission gear 3 arranged coaxially. The curtain motor is connected to the power rod 1 to input power to the power rod 1.

[0026] The first transmission gear 2 and the second transmission gear 3 are hollow and connected to form an inner cavity. Preferably, there is a certain gap between the first transmission gear 2 and the second transmission gear 3 to prevent them from abutting each other. The first transmission gear 2 and the second transmission gear 3 are positioned by the transmission box 9. A first toothed ring 21 is formed inside the first transmission gear 2, and a second toothed ring 31 is formed inside the second transmission gear 3. The power rod 1 extends into the inner cavity and forms a movable area 4. A first gear 5 and a second gear 6 are sleeved on and meshed on the power rod 1 and are located within the movable area 4. The setting of the movable area 4 limits the maximum gap distance between the first gear 5 and the second gear 6, so that when the first gear 5 meshes with the first toothed ring 21, the second gear 6 disengages from the first gear 6; and when the second gear 6 meshes with the second toothed ring 31, the first gear 5 disengages from the first toothed ring 21.

[0027] The first gear 5 can mesh with the first gear ring 21, the second gear 6 can mesh with the second gear ring 31, and an elastic element 7 abuts between the first gear 5 and the second gear 6.

[0028] When the power rod 1 moves upward, the moving area 4 moves upward, which will drive the first gear 5 and the second gear 6 to move upward. At this time, the first gear 5 can mesh with the first gear ring 21. When the first gear 5 abuts against the first gear ring 21, the elastic element 7 is compressed, the power rod 1 rotates slightly, and under the action of the restoring force of the elastic element 7, meshing can be achieved.

[0029] When the power rod 1 moves down, the first gear 5 disengages from the first gear ring 21, and the second gear 6 engages with the second gear ring 31. When the second gear 6 and the second gear ring 31 come into contact, the elastic element 7 is also compressed, the power rod 1 rotates slightly, and under the action of the restoring force of the elastic element 7, engagement can be achieved.

[0030] With the first transmission gear 2 and the second transmission gear 3 coaxial, the power output ends of the first transmission gear 2 and the second transmission gear 3 can be switched by moving the power rod 1.

[0031] The distance between the first gear ring 21 and the second gear ring 31 is greater than the length of the active area 4, so that when the first gear 5 and the second gear 6 are located between the first gear ring 21 and the second gear ring 31, the first gear 5 is not engaged with the first gear ring 21, and the second gear 6 is not engaged with the second gear ring 31. At this time, both the first transmission gear 2 and the second transmission gear 3 can rotate with the movement of the curtain, realizing the manual mode of the left and right curtains, and playing a clutch function.

[0032] Reference Figure 4 and Figure 6 As shown, a retaining ring 11 is formed on the power rod 1, wherein the retaining ring 11 is integrally formed with the power rod 1, and a fastener 12 is fixedly connected to one end of the power rod 1. The movable area 4 is formed between the retaining ring 11 and the fastener 12. The fastener 12 limits the upward movement of the first transmission gear 2, and the retaining ring 11 limits the downward movement of the second transmission gear 3, thereby forming the movable area 4 of the first transmission gear 2 and the second transmission gear 3.

[0033] Reference Figure 1 As shown, the elastic element 7 is a compression spring.

[0034] Reference Figure 4 and Figure 7 As shown, a first protruding ring 51 is formed on the side of the first gear 5 facing the second gear 6, and a second protruding ring 61 is formed on the side of the second gear 6 facing the first gear 5. The elastic member 7 is sleeved on the first protruding ring 51 and the second protruding ring 61. The compression spring is limited by the first protruding ring 51 and the second protruding ring 61, thereby preventing the compression spring from tilting.

[0035] Reference Figure 1 , Figure 2 and Figure 3As shown, magnetic rings 8 are fixedly connected to both the first transmission gear 2 and the second transmission gear 3. The magnetic rings 8 on the first transmission gear 2 and the second transmission gear 3 are far apart from each other, that is, the magnetic rings 8 on the first transmission gear 2 are located at the top of the first transmission gear 2, and the magnetic rings 8 on the second transmission gear 3 are located at the bottom of the second transmission gear 3. This increases the distance between the two magnetic rings 8 and prevents signal interference.

[0036] Both the first gear 5 and the second gear 6 have spline holes. An external spline is formed on the part of the power rod 1 located in the movable area 4. The first gear 5 and the second gear 6 mesh with the external spline through the spline holes, thereby realizing the power transmission between the power rod 1 and the first gear 5 and the second gear 6.

[0037] An electric curtain includes at least one set of the aforementioned power output switching components.

[0038] Reference Figure 1 As shown, an electric curtain includes a transmission box 9, on which a support rod 91 is formed. A power rod 1 has an insertion hole 13, into which the support rod 91 is inserted. The transmission box 9 includes a top cover, on which the support rod 91 is integrally formed. The central axis of the support rod 91 coincides with the central axis of the first transmission gear 2 and the second transmission gear 3. The support rod 91 limits the power rod 1 and ensures the coaxiality of the power rod 1 with the first transmission gear 2 and the second transmission gear 3.

[0039] A circuit board 92 is provided on the transmission box 9. A pin header 93 is electrically connected to the circuit board 92. The pin header 93 extends out of the transmission box 9. A nut header is provided on the curtain motor. The pin header 93 connects to the nut header to provide power to the circuit board 92. A Hall sensor corresponding to the magnetic ring 8 is also provided on the circuit board 92. The rotation signal of the magnetic ring 8 is sensed by the Hall sensor to obtain the rotation stroke and rotation direction of the first transmission gear 2 and the second transmission gear 3.

[0040] Each magnetic ring 8 corresponds to two Hall sensors.

[0041] 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 power output switching component, characterized in that: The device includes a power rod (1) and a first transmission gear (2) and a second transmission gear (3) arranged coaxially. The first transmission gear (2) and the second transmission gear (3) are hollow and connected to form an inner cavity. A first toothed ring (21) is formed inside the first transmission gear (2), and a second toothed ring (31) is formed inside the second transmission gear (3). The power rod (1) extends into the inner cavity and forms an active area (4). A first gear (5) and a second gear (6) are sleeved on the power rod (1) and mesh with it, and are located in the active area (4). An elastic element (7) abuts between the first gear (5) and the second gear (6). The distance between the first toothed ring (21) and the second toothed ring (31) is greater than the length of the active area (4).

2. The power output switching component according to claim 1, characterized in that: A retaining ring (11) is formed on the power rod (1), and a fastener (12) is fixedly connected to one end of the power rod (1). The movable area (4) is formed between the retaining ring (11) and the fastener (12).

3. The power output switching component according to claim 1, characterized in that: The elastic element (7) is a compression spring.

4. A power output switching component according to claim 3, characterized in that: The first gear (5) has a first convex ring (51) on the side facing the second gear (6), and the second gear (6) has a second convex ring (61) on the side facing the first gear (5). The elastic member (7) is sleeved on the first convex ring (51) and the second convex ring (61).

5. A power output switching component according to claim 1, characterized in that: Both the first transmission gear (2) and the second transmission gear (3) are fixedly connected with magnetic rings (8).

6. A power output switching component according to claim 1, characterized in that: Both the first gear (5) and the second gear (6) have spline holes.

7. An electric curtain, characterized in that: It includes at least one power output switching component as described in any one of claims 1 to 6.

8. An electric curtain according to claim 7, characterized in that: It includes a transmission box (9), on which a support rod (91) is formed, and a socket (13) is provided on the power rod (1), and the support rod (91) is inserted into the socket (13).

9. An electric curtain according to claim 8, characterized in that: A circuit board (92) is provided on the transmission box (9), and a pin header (93) is electrically connected to the circuit board (92), with the pin header (93) extending out of the transmission box (9).

10. An electric curtain according to claim 9, characterized in that: Multiple Hall sensors are electrically connected to the circuit board (92).

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