A main transmission case with switchable power output

Abstract

The utility model relates to electric window curtain technical field discloses a main transmission case of switchable power output, its technical scheme main points are including box, the box includes upper chamber and lower chamber, is provided with at least one group transmission assembly in upper chamber, and the lower chamber is rotatably connected with the locking piece corresponding with transmission assembly, sets up transmission assembly in upper chamber, sets up locking piece and input component in lower chamber, transmission assembly is separated with input component, and both sides are driven through power pole between both, when the transmission assembly or input component is overhauled and is replaced, will not interfere with each other, under the condition that the output end of curtain motor and input component keep butt joint, if input piece moves up, power pole moves up, and power pole is through switching part and second transmission gear disengages engagement, and is engaged with first transmission gear, and the transmission switching between first transmission gear and second transmission gear is realized through the movement of power pole and cooperation switching part.

Description

Technical Field

[0001] This utility model relates to the field of electric curtain technology, and more specifically to a main transmission box with switchable power output. 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. Therefore, 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.

[0004] In the utility model application with application number CN202421723432.0, a single-control transmission adjustment device and an electric curtain are disclosed. The first pre-pressure mechanism and the first transmission component are set in the same cavity, and the two can easily detach from the cavity at the same time during maintenance and replacement. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a main transmission box with switchable power output, so that the transmission components and input components do not interfere with each other during maintenance and replacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a main transmission box with switchable power output, comprising a box body, the box body including an upper cavity and a lower cavity, at least one set of transmission components being provided in the upper cavity, a locking member corresponding to the transmission components being rotatably connected in the lower cavity, an input component being provided in the locking member, the transmission components including a first transmission gear, a second transmission gear, a power rod and a switching part, the first transmission gear and the second transmission gear being rotatably connected in the box body and coaxially arranged with the power rod, the first transmission gear, the second transmission gear and the locking member being hollow, the power rod extending into the locking member, the power rod being connected to the input component, the input component being used to drive a curtain motor, the power rod moving up and down and engaging with the first transmission gear or the second transmission gear through the switching part.

[0007] As a further improvement of this utility model, the input component includes an input component movably connected within the locking member, the input component engaging and fixedly connected with the power rod, and a first elastic element is provided between the end of the input component facing the transmission component and the housing.

[0008] As a further improvement of this utility model, an abutment is sleeved and engaged on the power rod, and the first elastic member is disposed between the input member and the abutment.

[0009] As a further improvement of this utility model, the switching part includes a first gear and a second gear sleeved and meshed on the power rod. An active area is formed on the power rod. The first gear and the second gear are located in the active area. A second elastic element is provided between the first gear and the second gear. A first toothed ring is formed inside the first transmission gear, and a second toothed ring is formed inside the second transmission gear.

[0010] As a further improvement of this utility model, the distance between the first toothed ring and the second toothed ring is greater than the length of the active area.

[0011] 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.

[0012] As a further improvement of this utility model, two locking components are provided. Each locking component includes an integrally formed locking part and a connecting part. The locking part extends out of the housing. A connecting member is detachably connected between the two connecting parts. A lever is movably connected to the connecting member. The lever is rotatably connected to the housing, and at least a portion of the lever extends out of the housing.

[0013] As a further improvement of this utility model, a first support column is integrally formed on the lever, and a connecting hole is formed in the housing, wherein the first support column rotates within the connecting hole.

[0014] As a further improvement of this utility model, a second support is formed on the lever, and a first waist-shaped hole is provided on the connector, through which the second support passes.

[0015] As a further improvement of this utility model, the box body includes a top cover, a third support column integrally formed inside the top cover, a positioning hole is provided on the power rod, and the third support column extends into the positioning hole.

[0016] The beneficial effects of this utility model are as follows: In this utility model, the transmission component is set in the upper cavity, and the locking component and the input component are set in the lower cavity. The transmission component and the input component are separated and are transmitted between them through a power rod. When the transmission component or the input component is inspected or replaced, they will not interfere with each other. When the output end of the curtain motor is connected to the input component, if the input component moves upward, the power rod moves upward. The power rod disengages from the second transmission gear through the switching part and engages with the first transmission gear. The transmission switching between the first transmission gear and the second transmission gear is realized by the movement of the power rod and its cooperation with the switching part. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the two sets of transmission components and the circuit board in this utility model;

[0020] Figure 4 This is a schematic diagram of the transmission component in this utility model;

[0021] Figure 5 This is a utility model Figure 4 A sectional view;

[0022] Figure 6 This is a schematic diagram of the structure of the first transmission gear in this utility model;

[0023] Figure 7 This is a schematic diagram of the power rod structure in this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the first toothed ring in this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the abutment component in this utility model;

[0026] Figure 10 This is a structural schematic diagram of the locking component in this utility model;

[0027] Figure 11 This is a schematic diagram of the structure at the connecting hole in this utility model;

[0028] Figure 12 This is a schematic diagram of the connection structure of the lever, connector and connecting part in this utility model;

[0029] Figure 13 This is a schematic diagram of the lever structure in this utility model;

[0030] Figure 14 This is a schematic diagram of the locking component in this utility model;

[0031] Figure 15 This is a structural schematic diagram of the connector in this utility model.

[0032] Reference numerals: 1. Housing; 11. Connecting hole; 12. Top cover; 13. Third support column; 14. Circuit board; 15. Pin header; 2. Locking element; 21. Locking part; 22. Connecting part; 23. Connecting element; 231. First oblong hole; 24. Lever; 241. First support column; 242. Second support column; 3. First transmission gear; 31. First gear ring; 4. Second transmission gear; 41. Second gear ring; 5. Power rod; 51. Retaining ring; 52. Fastener; 53. Positioning hole; 6. Switching part; 61. First gear; 62. Second gear; 63. Second elastic element; 7. Input element; 71. First elastic element; 8. Abutment element; 9. Magnetic ring. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1 to 15 As shown, a main transmission box with switchable power output according to this embodiment includes a box body 1. The box body 1 includes an upper cavity and a lower cavity. The box body 1 includes an upper shell and a lower shell. The upper cavity is formed in the upper shell and the lower cavity is formed in the lower shell.

[0035] At least one set of transmission components is provided in the upper cavity, and a locking member 2 corresponding to the transmission components is rotatably connected in the lower cavity. An input component is provided at the locking member 2. The transmission components include a first transmission gear 3, a second transmission gear 4, a power rod 5, and a switching part 6. The first transmission gear 3 and the second transmission gear 4 are rotatably connected in the housing 1 and are coaxially arranged with the power rod 5. The first transmission gear 3 and the second transmission gear 4 are each used to connect to a transmission belt. The rotation of the first transmission gear 3 and the second transmission gear 4 drives the transmission belts they are connected to to rotate, thereby realizing the movement of the curtain.

[0036] The first transmission gear 3, the second transmission gear 4, and the locking member 2 are all hollow. The power rod 5 extends into the locking member 2 and is connected to the input component. The input component is used to drive the curtain motor.

[0037] The transmission component is located in the upper cavity, and the locking component 2 and the input component are located in the lower cavity. The transmission component and the input component are separated and are connected by a power rod 5. They will not interfere with each other when the transmission component or the input component is inspected or replaced.

[0038] The first transmission gear 3, the second transmission gear 4, and the locking member 2 are connected; the first transmission gear 3 and the second transmission gear 4 are arranged facing each other, and there is a certain gap between the first transmission gear 3 and the second transmission gear 4 to prevent the first transmission gear 3 and the second transmission gear 4 from abutting each other.

[0039] A ring is formed in the upper cavity, and the opposite ends of the first transmission gear 3 and the second transmission gear 4 abut against the ring.

[0040] Reference Figure 2 As shown, the power rod 5 extends into the locking member 2. The input component includes an input member 7 movably connected to the locking member 2. The curtain motor and the input member 7 are connected to achieve a transmission connection. The input member 7 is engaged and fixedly connected with the power rod 5. A spline groove is provided on the input member 7, which engages with the power rod 5 through the spline groove. When the input member 7 moves up and down, it can drive the power rod 5 to move up and down synchronously. A first elastic member 71 is provided between the end of the input member 7 facing the transmission component and the housing 1. The power rod 5 moves up and down and engages with the first transmission gear 3 or the second transmission gear 4 through the switching part 6.

[0041] The movement of the input component 7 is achieved by the first elastic element 71 and external force; wherein, the first elastic element 71 can be a compression spring, and the first elastic element 71 drives the input component 7 to move downward by restoring force; the curtain motor has a built-in lifting motor, which can drive the output end on the curtain motor to move up and down, thereby driving the input component 7 to move upward, realizing the upward movement of the power rod 5.

[0042] Without external force, the first elastic element 71 can always keep the input element 7 in the lowest position where it can move.

[0043] When the curtain motor is connected to the input component 7, if the connection is not in place, the input component 7 will move upward and the first elastic element 71 will be compressed. After the output end of the curtain motor rotates, under the action of the restoring force of the first elastic element 71, the input component 7 will be connected to the output end of the curtain motor to realize transmission. At this time, the power rod 5 engages with the second transmission gear 4 through the switching part 6 and disengages from the first transmission gear 3.

[0044] With the output end of the curtain motor connected to the input component 7, if the input component 7 moves upward, the power rod 5 moves upward. The power rod 5 disengages from the second transmission gear 4 through the switching part 6 and engages with the first transmission gear 3. The transmission switching between the first transmission gear 3 and the second transmission gear 4 is achieved by the movement of the power rod 5 in conjunction with the switching part 6.

[0045] The curtain motor includes a lifting motor and a rotating motor. The rotating motor drives the output end to rotate, while the lifting motor drives the rotating motor and the input end to rise and fall simultaneously.

[0046] Reference Figure 2 As shown, a contact member 8 is sleeved and engaged on the power rod 5. A first elastic member 71 is disposed between the input member 7 and the contact member 8. Preferably, a groove is formed on the housing 1, and the contact member 8 is located in the groove. Under the action of the first elastic member 71, the contact member 8 can always abut against the housing 1. The contact member 8 is provided with a spline hole, and the contact member 8 engages with the power rod 5 through the spline hole. When the input member 7 drives the power rod 5 to rotate, the power rod 5 will drive the contact member 8 to rotate at the same time, so that the first elastic member 71 can remain relatively stationary with the contact member 8 and the input member 7, thereby preventing friction between the end of the first elastic member 71 and the groove.

[0047] Reference Figures 2 to 6 As shown, in a preferred embodiment, the switching part 6 includes a first gear 61 and a second gear 62 sleeved and meshed on the power rod 5. An active area is formed on the power rod 5. The first gear 61 and the second gear 62 are located within the active area. A second elastic member 63 is provided between the first gear 61 and the second gear 62. A first toothed ring 31 is formed in the first transmission gear 3, and a second toothed ring 41 is formed in the second transmission gear 4.

[0048] The setting of the active area limits the maximum interval between the first gear 61 and the second gear 62, so that when the first gear 61 is engaged with the first gear ring 31, the second gear 62 is disengaged from the first gear 62; and when the second gear 62 is engaged with the second gear ring 41, the first gear 61 is disengaged from the first gear ring 31.

[0049] The second elastic element 63 can be a compression spring;

[0050] When the power rod 5 moves upward, the moving area moves upward, which will drive the first gear 61 and the second gear 62 to move upward. At this time, the first gear 61 can mesh with the first gear ring 31. When the first gear 61 abuts against the first gear ring 31, the second elastic element 63 is compressed, the power rod 5 rotates slightly, and under the action of the restoring force of the second elastic element 63, meshing can be achieved.

[0051] When the power rod 5 moves down, the first gear 61 disengages from the first gear ring 31, and the second gear 62 engages with the second gear ring 41. When the second gear 62 and the second gear ring 41 abut against each other, the second elastic element 63 is also compressed, the power rod 5 rotates slightly, and under the action of the restoring force of the second elastic element 63, engagement can be achieved.

[0052] With the first transmission gear 3 and the second transmission gear 4 coaxial, the power output ends of the first transmission gear 3 and the second transmission gear 4 can be switched by moving the power rod 5.

[0053] In another embodiment, fixing the first gear 61 to the second gear 62 and the power rod 5, and eliminating the second elastic element 63, can also achieve the switching of power between the first transmission gear 3 and the second transmission gear 4.

[0054] Preferably, the elastic force of the first elastic member 71 is greater than that of the second elastic member 63, ensuring that the input member 7 is always located at the lowest point of its movable range when no external force is applied.

[0055] Reference Figure 5 As shown, the distance between the first gear ring 31 and the second gear ring 41 is greater than the length of the active area, so that when the first gear 61 and the second gear 62 are located between the first gear ring 31 and the second gear ring 41, the first gear 61 is not engaged with the first gear ring 31, and the second gear 62 is not engaged with the second gear ring 41. At this time, it can be in manual mode, and the curtain can be manually pulled. The first transmission gear 3 and / or the second transmission gear 4 can rotate, which can act as a clutch function to realize the manual function of the left and right curtains.

[0056] Reference Figure 7 As shown, a retaining ring 51 is formed on the power rod 5. The retaining ring 51 is integrally formed with the power rod 5. One end of the power rod 5 is fixedly connected to a fastener 52. The movable area is formed between the retaining ring 51 and the fastener 52. The fastener 52 limits the upward movement of the first transmission gear 3, and the retaining ring 51 limits the downward movement of the second transmission gear 4.

[0057] Reference Figure 5 As shown, a first convex ring is formed on the side of the first gear 61 facing the second gear 62, and a second convex ring is formed on the side of the second gear 62 facing the first gear 61. The second elastic member 63 is sleeved between the first convex ring and the second convex ring. The first convex ring and the second convex ring limit the second elastic member 63, thereby preventing the second elastic member 63 from tilting.

[0058] Reference Figure 2 , Figure 10As shown, there are two locking components 2, namely two sets of transmission components. One set of transmission components controls the left curtain, and the other set of transmission components controls the right curtain. This allows both ends of the left curtain to move independently to the left and to the right, and both ends of the right curtain to move independently to the left and to the right.

[0059] Reference Figure 10 and Figure 14 As shown, the locking component 2 includes an integrally formed locking part 21 and a connecting part 22. The locking part 21 extends out of the housing 1 and has two output ends at the curtain motor. Each output end has a locking hole, and the locking component 2 corresponds to the locking hole. Preferably, the locking part 21 is elliptical and the locking hole is also elliptical. After the locking part 21 is inserted into the locking hole, the locking part 21 and the locking hole intersect through the rotation of the locking part 21, thereby locking the locking component 2 with the curtain motor.

[0060] Reference Figure 12 , Figure 13 , Figure 14 and Figure 15 As shown, a connector 23 is detachably connected between the two connecting parts 22. A lever 24 is movably connected to the connector 23. The lever 24 is rotatably connected to the housing 1, and at least part of the lever 24 extends out of the housing 1. By rotating the lever 24, the connector 23 can be moved, thereby causing the two locking parts 2 to rotate synchronously.

[0061] Reference Figure 12 As shown, a notch is provided on the housing 1, and the lever 24 extends out of the housing 1 through the notch.

[0062] The two locking parts 21 are connected by a connector 23, and the lever 24 is connected to the connector 23, so that the lever 24 can be positioned between the two locking parts 21. The lever 24 does not need to be connected to one of the locking parts 2. The force of moving the lever 24 does not act directly on the locking part 2, but is transmitted through the connector 23, so that the forces that drive the two locking parts 2 to rotate are closer and more stable.

[0063] Reference Figure 12 As shown, a column is formed on the connecting part 22, and a threaded hole is opened on the column. Both ends of the connector 23 are provided with through holes, which correspond to the threaded holes. The column and the connector 23 are connected by bolts. After the bolt passes through the through hole, it is threadedly connected to the threaded hole. A washer is also installed between the end of the bolt and the connector 23.

[0064] In one embodiment, a first support column 241 is integrally formed on the lever 24, and a connecting hole 11 is formed inside the housing 1. The first support column 241 rotates within the connecting hole 11. When the lever 24 rotates, it rotates around the axis of the first support column 241 as the center line of rotation.

[0065] In another embodiment, the first support 241 can be disposed inside the housing 1, and a connection hole 11 can be formed on the lever 24.

[0066] Reference Figure 13 and Figure 15 As shown, in a preferred embodiment, a second support column 242 is formed on the lever 24, and a first waist-shaped hole 231 is provided on the connector 23. The second support column 242 passes through the first waist-shaped hole 231. When the lever 24 rotates, the second support column 242 will be displaced. The first waist-shaped hole 231 provides space for the second support column 242 to move, which can drive the connector 23 to move.

[0067] A step is formed on the second support column 242, and some of the connectors 23 are placed on the step to provide certain support for the connectors 23 and facilitate their installation.

[0068] In another embodiment, the positions of the second pillar 242 and the first waist-shaped hole 231 can be interchanged, with the second pillar 242 disposed on the connector 23 and the first waist-shaped hole 231 opened on the lever 24.

[0069] The housing 1 includes a top cover 12, which is detachably connected to the upper shell. A third support column 13 is integrally formed inside the top cover 12. A positioning hole 53 is provided on the power rod 5. The third support column 13 extends into the positioning hole 53. The central axes of the third support column 13, the first transmission gear 3, and the second transmission gear 4 coincide.

[0070] The third support column 13 acts as a limit for the power rod 5, ensuring that the power rod 5 does not tilt during its up-and-down movement.

[0071] Reference Figure 3 As shown, magnetic rings 9 are fixedly connected to both the first transmission gear 3 and the second transmission gear 4. A circuit board 14 is provided inside the housing 1. A pin header 15 and a Hall sensor corresponding to the magnetic ring 9 are electrically connected to the circuit board 14. The pin header 15 protrudes from the housing 1.

[0072] A nut is provided on the curtain motor, which connects to the pin 15 to supply power to the circuit board 14. The circuit board 14 has multiple Hall sensors, with one magnetic ring 9 corresponding to two Hall sensors. The rotation signal of the magnetic ring 9 is detected by the Hall sensors to obtain the rotation direction and rotation stroke of the first transmission gear 3 and the second transmission gear 4, thereby obtaining the movement direction and movement distance of the curtain.

[0073] 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 main transmission box with switchable power output, characterized in that: The device includes a housing (1), which includes an upper cavity and a lower cavity. At least one set of transmission components is provided in the upper cavity, and a locking member (2) corresponding to the transmission components is rotatably connected in the lower cavity. An input component is provided at the locking member (2). The transmission components include a first transmission gear (3), a second transmission gear (4), a power rod (5), and a switching part (6). The first transmission gear (3) and the second transmission gear (4) are rotatably connected in the housing (1) and coaxially arranged with the power rod (5). The first transmission gear (3), the second transmission gear (4), and the locking member (2) are all hollow. The power rod (5) extends into the locking member (2) and is connected to the input component. The input component is used to drive and connect to a curtain motor. The power rod (5) moves up and down and meshes with the first transmission gear (3) or the second transmission gear (4) through the switching part (6).

2. The main transmission box with switchable power output according to claim 1, characterized in that: The input component includes an input component (7) movably connected within the locking member (2), the input component (7) engaging and fixedly connected with the power rod (5), and a first elastic member (71) is provided between the end of the input component (7) facing the transmission component and the housing (1).

3. The main transmission box with switchable power output according to claim 2, characterized in that: The power rod (5) is fitted with and engaged with an abutment (8), and the first elastic element (71) is disposed between the input element (7) and the abutment (8).

4. The main transmission box with switchable power output according to claim 1, characterized in that: The switching part (6) includes a first gear (61) and a second gear (62) sleeved and meshed on the power rod (5). The power rod (5) has an active area. The first gear (61) and the second gear (62) are located in the active area. A second elastic element (63) is provided between the first gear (61) and the second gear (62). A first toothed ring (31) is formed in the first transmission gear (3), and a second toothed ring (41) is formed in the second transmission gear (4).

5. The main transmission box with switchable power output according to claim 4, characterized in that: The distance between the first toothed ring (31) and the second toothed ring (41) is greater than the length of the active area.

6. The main transmission box with switchable power output according to claim 4, characterized in that: A retaining ring (51) is formed on the power rod (5), and a fastener (52) is fixedly connected to one end of the power rod (5). The movable area is formed between the retaining ring (51) and the fastener (52).

7. The main transmission box with switchable power output according to claim 1, characterized in that: Two locking components (2) are provided. Each locking component (2) includes an integrally formed locking part (21) and a connecting part (22). The locking part (21) extends out of the housing (1). A connecting part (23) is detachably connected between the two connecting parts (22). A lever (24) is movably connected to the connecting part (23). The lever (24) is rotatably connected to the housing (1), and at least part of the lever (24) extends out of the housing (1).

8. The main transmission box with switchable power output according to claim 7, characterized in that: The lever (24) has an integrally formed first support (241), and the housing (1) has a connecting hole (11) formed inside. The first support (241) rotates within the connecting hole (11).

9. A main transmission box with switchable power output according to claim 7, characterized in that: A second support column (242) is formed on the lever (24), and a first waist-shaped hole (231) is provided on the connector (23), through which the second support column (242) passes.

10. A main transmission box with switchable power output according to claim 1, characterized in that: The housing (1) includes a top cover (12), and a third support column (13) is integrally formed inside the top cover (12). A positioning hole (53) is provided on the power rod (5), and the third support column (13) extends into the positioning hole (53).

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