Gear box

Abstract

The utility model discloses a gear box which comprises a box body, a gear set and at least two flywheels, the gear set is arranged inside the box body, the flywheels are connected with the gear set and arranged outside the box body, and the flywheels are respectively connected with different external gears through chains and used for driving an external reel and an external wheel disc to rotate. The two flywheels work independently through the gear set, so that independent work of the reel and the wheel disc which are connected with the two flywheels through the chain respectively is achieved, winding and unwinding of the curtain pieces are independently controlled, the gear connected with the first flywheel or the second flywheel is driven according to needs, and winding or unwinding of the curtain pieces is completed. Therefore, the possibility that the curtain pieces are clamped is effectively reduced, and the service life of the roller shutter door is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter door technology, and in particular to a gearbox. Background Art

[0002] Roller shutters are typically suspended from the wall by a roller, and a motor drives gears to rotate, allowing the roller shutter to be raised or lowered.

[0003] The power source of existing roller shutters is the gearbox, which usually uses gears to connect a flywheel assembly to realize the raising and lowering of the roller shutter. The same flywheel assembly is connected to the roller shaft and turntable at the same time, which makes the flywheel assembly subject to greater force, which can easily lead to flywheel damage, causing the roller shaft or turntable to fall off, and the curtain slats connected to it to fall off as well, resulting in damage to the roller shutter. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a gearbox.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including a housing, a gear set, and at least two flywheels, wherein the gear set is disposed inside the housing;

[0006] The flywheel is connected to the gear set and is disposed outside the housing;

[0007] The flywheels are connected to different external gears via chains, which drive the external spools and external discs to rotate.

[0008] As a further description of the above technical solution: the gear set includes a driving gear, a driven gear one, a driven gear two, and a driven gear three. The driving gear and the driven gear one are used to drive the driven gear two or the driven gear three to rotate.

[0009] As a further description of the above technical solution: the flywheel includes flywheel one and flywheel two, flywheel one is connected to the driven wheel two, and flywheel two is connected to the driven wheel three.

[0010] As a further description of the above technical solution: the driven wheel one is located between the driving wheel, the driven wheel two and the driven wheel three, the driving wheel meshes with the driven wheel one for transmission, and the driven wheel one is used to mesh with the driven wheel two or the driven wheel three for transmission.

[0011] As a further description of the above technical solution: the box body includes a box body upper cover and a box body lower cover, the box body upper cover and the box body lower cover are closed to form a cavity, the driving wheel and the driven wheel one are disposed on the box body upper cover, and the driven wheel two and the driven wheel three are disposed on the box body lower cover.

[0012] As a further description of the above technical solution: the top cover of the box is provided with positioning hole one and positioning hole two, the position of positioning hole one corresponds to the position of driven wheel two, and the position of positioning hole two corresponds to the position of driven wheel three.

[0013] As a further description of the above technical solution: the lower cover of the housing is provided with positioning hole three and positioning hole four, the position of positioning hole three corresponds to the driving wheel, and the position of positioning hole four corresponds to the driven wheel one.

[0014] As a further description of the above technical solution: the fourth positioning hole is an elliptical hole, and the fourth positioning hole is located between the second driven wheel and the third driven wheel, and is used to adjust the position of the second driven wheel.

[0015] As a further description of the above technical solution: the drive wheel is connected to an external motor via a connecting rod, and the connecting rod passes through the housing.

[0016] As a further description of the above technical solution: the lower cover of the box is fixedly provided with multiple mounting plates, and the mounting plates are disposed on the outer wall of the lower cover of the box.

[0017] This utility model has the following beneficial effects:

[0018] This invention enables the externally connected flywheel to rotate through the meshing of gear sets, thereby driving the connected roller or disc to rotate and realize the raising or lowering of the curtain slats. By using two flywheels to achieve the raising or lowering of the curtain slats respectively, it effectively avoids the situation where the curtain slats get stuck or fall off due to the same flywheel controlling the raising or lowering of the curtain slats. Attached Figure Description

[0019] Figure 1 This is a front view of a gearbox according to the present invention;

[0020] Figure 2 for Figure 1 A 3D view of the top cover of the middle box;

[0021] Figure 3 for Figure 2 Top view in the middle;

[0022] Figure 4 for Figure 1 A 3D view of the lower cover of the middle box;

[0023] Figure 5 for Figure 4 Top view in the middle;

[0024] Figure 6 for Figure 5 The bottom view in the image.

[0025] Legend:

[0026] 1. Housing; 2. Gear set; 3. Flywheel; 11. Housing top cover; 12. Housing bottom cover; 13. Positioning hole one; 14. Positioning hole two; 15. Positioning hole three; 16. Positioning hole four; 17. Mounting plate; 21. Drive wheel; 22. Driven wheel one; 23. Driven wheel two; 24. Driven wheel three; 25. Connecting rod; 31. Flywheel one; 32. Flywheel two. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Reference Figures 1-6 One embodiment of this utility model includes a housing 1, a gear set 2, and at least two flywheels 3. The gear set 2 is located inside the housing 1, and the flywheels 3 are connected to the gear set 2 and located outside the housing 1. The flywheels 3 are connected to different external gears via chains to drive the external roller and external wheel to rotate. The gear set 2 enables the two flywheels 3 to work independently, thereby enabling the independent operation of the roller and wheel connected to the two flywheels 3 via chains. This allows for individual control of the curtain's winding and lowering. As needed, the gears connected to flywheel 1 31 or flywheel 2 32 are driven to complete the winding or lowering of the curtain, effectively reducing the possibility of the curtain getting stuck and improving the service life of the roller shutter door.

[0029] The gear set 2 includes a driving gear 21, a driven gear 1 22, a driven gear 23, and a driven gear 3 24. The driving gear 21 and the driven gear 1 22 are used to drive the driven gear 23 or the driven gear 3 24 to rotate. The driving gear 21 is connected to an external motor through a connecting rod 25, which passes through the housing 1. The external motor drives the driving gear 21 to rotate through the connecting rod 25, which is fixedly connected to the driving gear 21. The driven gear 1 22, which meshes with the driving gear 21, rotates synchronously with the driving gear 21. When the driven gear 1 22 meshes with the driven gear 23, the driven gear 23 rotates with the driving gear 21, and the driven gear 3 24 remains stationary. When the driven gear 1 22 meshes with the driven gear 3 24, the driven gear 3 24 rotates with the driving gear 21, and the driven gear 23 remains stationary.

[0030] The enclosure 1 includes an upper cover 11 and a lower cover 12. The upper cover 11 and the lower cover 12 are closed to form a cavity. A drive wheel 21 and a driven wheel 12 are mounted on the upper cover 11, and a driven wheel 23 and a driven wheel 34 are mounted on the lower cover 12. The lower cover 12 is fixedly equipped with multiple mounting plates 17. The mounting plates 17 are located on the outer wall of the lower cover 12. After the mounting plates 17 are bolted through, the enclosure 1 is fixed to external equipment or a wall. The upper cover 11 and the lower cover 12 are connected by multiple bolts (it should be noted that the bolts and bolt holes are omitted in the attached drawings, but this does not affect the content of the solution, so they will not be described again).

[0031] The upper cover 11 of the housing has two positioning holes: a first positioning hole 13 and a second positioning hole 14. The position of the first positioning hole 13 corresponds to the position of the driven wheel 23, and the position of the second positioning hole 14 corresponds to the position of the driven wheel 24. The first positioning hole 13 and the second positioning hole 14 are circular holes used to fix the driven wheels 23 and 24, so that they can remain stable and complete the transmission better. The lower cover 12 of the housing has two positioning holes: a third positioning hole 15 and a fourth positioning hole 16. The position of the third positioning hole 15 corresponds to the position of the driving wheel 21, and the position of the fourth positioning hole 16 corresponds to the position of the driven wheel 22. The third positioning hole 15 is a circular hole used to fix the driving wheel 21. 21 is fixed. Positioning hole 4 16 is an elliptical hole. Positioning hole 4 16 is located between driven wheel 2 23 and driven wheel 3 24. It is used to adjust the position of driven wheel 2 23. Through an external drive device, driven wheel 1 22 moves along the movement path provided by positioning hole 4 16, so that driven wheel 1 22 engages with driven wheel 2 23 or driven wheel 3 24. (It should be noted that the actual range of motion of driven wheel 1 22 is very small. It is loosely connected to the top cover 11 of the box, so that driven wheel 1 22 can move when fixed. This connection is an existing mature technology, so it will not be described in detail.)

[0032] Driven wheel 22 is located between driven wheel 21, driven wheel 23, and driven wheel 24. Driven wheel 21 meshes with driven wheel 22 for transmission. Driven wheel 22 is used to mesh with driven wheel 23 or driven wheel 24 for transmission. Flywheel 3 includes flywheel 31 and flywheel 32. Flywheel 31 is connected to driven wheel 23 via the rotating shaft of driven wheel 23. Flywheel 32 is connected to driven wheel 24 via the rotating shaft of driven wheel 24. The rotating shaft passes through housing 1, allowing flywheel 3 to follow driven wheel 23 or driven wheel 24. The flywheel rotates synchronously outside the housing 1. When driven wheel 23 meshes with driven wheel 22, flywheel 31 rotates, driving the chain connected to it to rotate, thereby causing the roller to rotate. When driven wheel 34 meshes with driven wheel 22, flywheel 32 rotates, driving the chain connected to it to rotate, thereby causing the wheel to rotate, thus realizing the individual control of the curtain slats' winding or unwinding. (It should be noted that due to the obstruction of the housing 1, the connection between flywheel 3 and gear set 2 cannot be directly observed in the attached diagram of the instruction manual, but according to the attached diagram of the instruction manual...) Figure 1 It can be understood that the flywheel 3 is positioned via a connecting rod. Since this connection is a mature existing technology, it will not be described in detail here.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gearbox, characterized in that: It includes a housing (1), a gear set (2), and at least two flywheels (3), wherein the gear set (2) is disposed inside the housing (1); The flywheel (3) is connected to the gear set (2) and is disposed outside the housing (1); The flywheel (3) is connected to different external gears via chains, which are used to drive the external spool and the external disc to rotate.

2. A gearbox according to claim 1, characterized in that: The gear set (2) includes a driving gear (21), a driven gear one (22), a driven gear two (23) and a driven gear three (24). The driving gear (21) and the driven gear one (22) are used to drive the driven gear two (23) or the driven gear three (24) to rotate.

3. A gearbox according to claim 2, characterized in that: The flywheel (3) includes a first flywheel (31) and a second flywheel (32). The first flywheel (31) is connected to the second driven flywheel (23), and the second flywheel (32) is connected to the third driven flywheel (24).

4. A gearbox according to claim 2, characterized in that: The driven wheel 1 (22) is located between the driving wheel (21), the driven wheel 2 (23), and the driven wheel 3 (24). The driving wheel (21) meshes with the driven wheel 1 (22) for transmission. The driven wheel 1 (22) is used to mesh with the driven wheel 2 (23) or the driven wheel 3 (24) for transmission.

5. A gearbox according to claim 2, characterized in that: The box body (1) includes a box body upper cover (11) and a box body lower cover (12). The box body upper cover (11) and the box body lower cover (12) are closed to form a cavity. The driving wheel (21) and the driven wheel one (22) are disposed on the box body upper cover (11), and the driven wheel two (23) and the driven wheel three (24) are disposed on the box body lower cover (12).

6. A gearbox according to claim 5, characterized in that: The top cover (11) of the box body is provided with a positioning hole one (13) and a positioning hole two (14). The position of the positioning hole one (13) corresponds to the position of the driven wheel two (23), and the position of the positioning hole two (14) corresponds to the position of the driven wheel three (24).

7. A gearbox according to claim 5, characterized in that: The lower cover (12) of the housing is provided with positioning hole three (15) and positioning hole four (16). The position of positioning hole three (15) corresponds to the position of the driving wheel (21), and the position of positioning hole four (16) corresponds to the position of the driven wheel one (22).

8. A gearbox according to claim 7, characterized in that: The positioning hole four (16) is an elliptical hole, located between the driven wheel two (23) and the driven wheel three (24), and is used to adjust the position of the driven wheel two (23).

9. A gearbox according to claim 2, characterized in that: The drive wheel (21) is connected to an external motor via a connecting rod (25), which passes through the housing (1).

10. A gearbox according to claim 5, characterized in that: The lower cover (12) of the box is fixedly provided with multiple mounting plates (17), and the mounting plates (17) are provided on the outer wall of the lower cover (12).

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