Vertical curtain transmission assembly and vertical curtain

Abstract

The utility model relates to a vertical curtain transmission assembly and a vertical curtain, the vertical curtain transmission assembly comprises a gear carrier, a transmission gear, a transmission shaft rotatably installed on the gear carrier, a magnetic piece connected to the transmission shaft and a belt gear connected to the transmission shaft, and the magnetic piece is in magnetic adsorption connection with the transmission gear. When the torque force borne by the transmission shaft is larger than the magnetic adsorption force, the transmission gear slides and rotates relative to the magnetic part. The magnetic piece is connected with the transmission gear in a magnetic adsorption mode, and magnetic adsorption force exists between the magnetic piece and the transmission gear and can achieve power transmission and torque transmission. And the magnetic part and the transmission gear slip, so that continuous rotation can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of shading, in particular to a vertical curtain, and more particularly to a vertical curtain transmission component and a vertical curtain. Background Art

[0002] The vertical curtain can use a driving device to drive two track devices at the same time, and the connecting parts of the two track devices are connected by a transmission component, so that the hook components set on the two track devices move synchronously to achieve the opening and closing function or the dimming function. For example, the electric curtain with a universal docking structure disclosed in the Chinese public document CN116350051A.

[0003] The hook assembly is connected and driven by a transmission belt. When the lengths of the two track devices are different, the driving device drives the two track devices to move synchronously. The hook assembly of the short track device moves to the maximum extended position or the closed position, while the hook assembly of the long track device has not yet reached the maximum extended position or the closed position. There are technical problems of inadequate movement and low transmission torque, which need to be improved. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the embodiment of the utility model provides a vertical curtain transmission assembly and a vertical curtain.

[0005] According to a first aspect of an embodiment of the utility model, a vertical curtain transmission assembly is provided, the vertical curtain transmission assembly comprising a gear frame, a transmission gear, a transmission shaft rotatably mounted on the gear frame, a magnetic member connected to the transmission shaft, and a belt gear connected to the transmission shaft, wherein the magnetic member is magnetically adsorbed and connected to the transmission gear;

[0006] When the torque force applied to the transmission shaft is greater than the magnetic adsorption force, the transmission gear rotates with slippage relative to the magnetic member.

[0007] In one embodiment, the transmission gear is made of magnetic metal material.

[0008] In one embodiment, the transmission gear is provided with a mounting groove, and at least a portion of the magnetic member extends into the mounting groove.

[0009] In one embodiment, the transmission gear is provided with a central shaft, the central shaft protrudes from the center of the assembly groove, and the central shaft is plug-connected and rotatably connected with the transmission shaft.

[0010] In one embodiment, the transmission gear includes at least two assembly cylinders protruding from the assembly groove and a ferromagnetic member embedded in the assembly groove, and the assembly cylinder is plug-fitted with the ferromagnetic member.

[0011] In one embodiment, the transmission shaft includes a torque portion and at least one transmission surface arranged on the torque portion, and the torque portion is plugged into the magnetic component and is drivingly connected to the magnetic component.

[0012] In one embodiment, the belt gear and the gear rack are rotatably connected, and the transmission shaft and the belt gear are plug-fitted via a spline structure.

[0013] In one embodiment, the gear rack is provided with a belt groove, the transmission shaft passes through the belt groove and is connected to the magnetic member, and the belt gear is located in the belt groove.

[0014] In one embodiment, the gear rack is equipped with a coaxially arranged rotating bearing and a rotating member, the transmission shaft is connected to the rotating bearing, and the belt gear is connected to the rotating member.

[0015] According to a second aspect of an embodiment of the utility model, a vertical curtain is provided, comprising a first track device, a second track device and a switching device, the vertical curtain also comprising the vertical curtain transmission assembly as described above, the first track device and the second track device are both installed with the vertical curtain transmission assembly, the switching device is meshed and drivenly connected with the transmission gear, the first track device and the second track device are both provided with a hook assembly, and the belt gear is connected to the hook assembly through a transmission belt.

[0016] The technical solution provided by the embodiment of the utility model may include the following beneficial effects: the magnetic part is connected to the transmission gear by magnetic adsorption, and there is a magnetic adsorption force between the two. The torque force of the transmission gear is transmitted to the transmission shaft through the magnetic adsorption force between the magnetic part and the transmission gear, and then the belt gear is driven to rotate through the transmission shaft, thereby constructing the power output of the transmission belt and the belt gear. When the transmission belt rotates into place, the resistance to the transmission shaft is greater than the magnetic adsorption force, and the magnetic part and the transmission gear slip, so that continuous rotation can be achieved.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] Figure 1 is a schematic structural diagram of a vertical curtain transmission assembly according to an exemplary embodiment.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of a vertical curtain transmission assembly according to an exemplary embodiment.

[0021] Figure 3 The present invention is a schematic structural diagram of a hidden belt gear of a vertical curtain transmission assembly according to an exemplary embodiment.

[0022] Figure 4 is a schematic back view of a gear carrier according to an exemplary embodiment.

[0023] Figure 5 It is a schematic structural diagram of a transmission gear according to an exemplary embodiment.

[0024] Figure 6 It is a schematic diagram of the structure of a transmission shaft mounted magnetic component according to an exemplary embodiment.

[0025] Figure 7 is a schematic structural diagram of a vertical blind according to an exemplary embodiment.

[0026] In the figure, the gear rack 10; the belt groove 11; the rotating member 12; the rotating bearing 13; the transmission gear 20; the assembly groove 21; the assembly cylinder 22; the central axis 23; the ferromagnetic member 24; the positioning step 25; the transmission shaft 30; the torque part 31; the spline shaft 32; the belt gear 40; the magnetic member 50; the first track device 60; the second track device 70; the adapter device 80. DETAILED DESCRIPTION

[0027] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] like Figures 1 to 3 As shown, the utility model provides a vertical curtain transmission assembly, which includes a gear frame 10, a transmission gear 20, a transmission shaft 30 rotatably mounted on the gear frame 10, a magnetic member 50 connected to the transmission shaft 30, and a belt gear 40 connected to the transmission shaft 30, wherein the magnetic member 50 is magnetically adsorbed and connected to the transmission gear 20. The gear frame 10 is a frame structure, and the transmission gear 20 and the belt gear 40 are respectively located on two sides of the gear frame 10 facing each other, and the transmission shaft 30 passes through the gear frame 10 and is respectively connected to the transmission gear 20 and the belt gear 40. The torque force of the transmission gear 20 is transmitted to the transmission shaft 30 through the magnetic adsorption force between the magnetic member 50 and the transmission gear 20, and then the belt gear 40 is driven to rotate through the transmission shaft 30, thereby constructing the power output of the transmission belt and the belt gear 40.

[0031] Among them, the belt gear 40 is connected to the transmission belt in the track device, and the transmission belt is connected to the hook assembly. There is a magnetic adsorption force between the transmission gear 20 and the magnetic component 50, and the magnetic adsorption force is greater than the torque force required for the belt component to drive the hook assembly to open and close normally. When the belt assembly drives the hook assembly to open and close in place, the hook assembly will no longer move. If the transmission gear 20 continues to increase the driving force, the torque force on the transmission shaft 30 will increase. When the torque force on the transmission shaft 30 is greater than the magnetic adsorption force, the transmission gear 20 will slip and rotate relative to the magnetic component 50 to maintain the continuity of the transmission and provide safety protection for the drive device to avoid overloading the drive device.

[0032] In one embodiment, the transmission gear 20 is made of magnetic metal material, so that the magnetic member 50 is directly connected to the transmission gear 20 by magnetic attraction. Alternatively, the transmission gear 20 can be made of iron or other metal or alloy material that can be attracted by a magnet.

[0033] In one embodiment, the transmission gear 20 receives at least part of the magnetic member 50, and the interface between the magnetic member 50 and the transmission gear 20 is a plane. The magnetic member 50 is connected to the transmission gear 20 by magnetic adsorption in a plane, and the rotation stability of the two when slipping is high. The transmission gear 20 receives at least part of the magnetic member 50 to limit the range of movement of the magnetic member 50, and at the same time, it can also prevent the magnetic member 50 from separating from the transmission gear 20 during the slipping process, thereby improving the stability of the structure and the reliability of power transmission.

[0034] like Figure 2 , Figure 5 to Figure 6 As shown, preferably, the transmission gear 20 is provided with an assembly groove 21, and at least part of the magnetic member 50 extends into the assembly groove 21. The assembly groove 21 is recessed along the end surface of the transmission gear 20 to form a groove structure, and the center of the assembly groove 21 coincides with the center of the transmission gear 20. The magnetic member 50 is a flat magnetic structure, and the magnetic member 50 is inserted into the assembly groove 21 and is coaxially arranged with the transmission gear 20, and the magnetic adsorption force in all directions is balanced.

[0035] Preferably, the magnetic part 50 is adsorbed and connected to the bottom of the assembly groove 21 to further improve the controllable direction of the magnetic adsorption force. Among them, the transmission gear 20 includes at least two assembly cylinders 22 protruding from the assembly groove 21 and a ferromagnetic part 24 embedded in the assembly groove 21, and the assembly cylinder 22 is plugged into the ferromagnetic part 24. The ferromagnetic part 24 can be set as a thin plate structure made of iron sheet, magnet or other materials that can be adsorbed by magnets. The ferromagnetic part 24 is provided with a limiting hole adapted to the assembly cylinder 22, and the ferromagnetic part 24 is assembled to the assembly groove 21, and the assembly cylinder 22 is plugged into the corresponding limiting hole to form an anti-rotation structure. Preferably, four assembly cylinders 22 are provided, and the four assembly cylinders 22 are evenly distributed in the assembly groove 21.

[0036] When the transmission gear 20 rotates, an acting force is formed between the assembly cylinder 22 and the ferromagnetic member 24, and a magnetic adsorption force is formed between the ferromagnetic member 24 and the magnetic member 50, so as to transmit power to the transmission shaft 30 connected to the magnetic member 50, and the magnetic adsorption area is controllable. In addition, a factor of the magnetic adsorption force is related to the adsorption area, and adjusting the area of ​​the ferromagnetic member 24 can also control the magnitude of the magnetic adsorption force, thereby facilitating the adjustment of the maximum torque force that can be transmitted.

[0037] Further, the transmission gear 20 is provided with a central shaft 23, which is protruded from the center of the assembly groove 21, and the central shaft 23 is plug-connected and rotatably connected with the transmission shaft 30. The central shaft 23 is inserted into the transmission shaft 30 to form a coaxial arrangement, which can improve the coaxiality of the transmission gear 20 and the transmission shaft 30 and improve the tightness of the combination of the two. Preferably, the central shaft 23 and the transmission shaft 30 are tightly connected.

[0038] The central axis 23 is coaxially arranged with the assembly groove 21, and the assembly cylinder 22 is arranged at intervals around the central axis 23. The ferromagnetic member 24 is arranged around the central axis 23 to form a central positioning. Preferably, there is a positioning step 25 between the central axis 23 and the groove bottom of the assembly groove 21, and the outer diameter of the positioning step 25 is larger than the aperture of the part of the transmission shaft 30 where the magnetic member 50 is installed. The magnetic member 50 is limited between the positioning step 25 and the torque portion 31 of the transmission shaft 30 to form an assembly limitation of the magnetic member 50.

[0039] Preferably, the transmission shaft 30 includes a torque portion 31 and at least one transmission surface arranged on the torque portion 31, and the torque portion 31 is plugged into the magnetic component 50 and is drivingly connected to the magnetic component 50. The transmission shaft 30 is a stepped shaft structure, the torque portion 31 is located at one end of the transmission shaft 30, and the magnetic component 50 is provided with a torque hole penetrating therethrough, and the torque hole and the torque portion 31 are complementary matching structures so that the magnetic component 50 can drive the transmission shaft 30 to rotate. Optionally, the torque portion 31 is set to a multi-prism structure, such as the torque portion 31 is set to a quadrangular prism or a hexagonal prism structure. Optionally, the torque portion 31 is set to a chamfered shaft structure in which a curved surface is combined with a transmission surface.

[0040] like Figures 2 to 6 As shown, in one embodiment, the transmission shaft 30 and the belt gear 40 are plugged together through a spline structure. One end of the transmission shaft 30 is set as a spline shaft 32, and the center hole of the belt gear 40 is set as a spline hole. The spline shaft 32 and the spline hole are plugged together and transmit torque, with high assembly accuracy and stable torque transmission.

[0041] The belt gear 40 and the gear frame 10 are rotatably connected. The gear frame 10 is installed with a coaxially arranged rotating bearing 13 and a rotating member 12. The transmission shaft 30 is connected to the rotating bearing 13, and the belt gear 40 is connected to the rotating member 12. The gear frame 10 provides support for the belt gear 40, wherein the belt gear 40 is provided with a stepped hole, wherein the large hole end of the stepped hole is connected to the rotating member 12 to maintain the flexibility of rotation and the accuracy of the installation position. The small hole end of the stepped hole is set as a spline hole, which is plugged and matched with the spline shaft 32.

[0042] In one embodiment, the gear frame 10 is provided with a belt groove 11, the transmission shaft 30 passes through the belt groove 11 and is connected to the magnetic member 50, and the belt gear 40 is located in the belt groove 11. The belt groove 11 is a recessed structure of the gear frame 10, and the belt gear 40 is located in the belt groove 11 to limit the movable connection of the transmission belt and prevent the transmission belt from being separated. In addition, the belt groove 11 is provided with a mounting convex tube, which can limit the transmission shaft 30 and increase the connection length with the transmission shaft 30.

[0043] like Figure 2 and Figure 7As shown, the vertical curtain transmission assembly disclosed in the above embodiment is applied to the vertical curtain, wherein the vertical curtain comprises a first track device 60, a second track device 70 and a switching device 80, and the vertical curtain further comprises a vertical curtain transmission assembly. The first track device 60 and the second track device 70 are both installed with the vertical curtain transmission assembly, the switching device 80 is meshed and drivenly connected with the transmission gear 20, the first track device 60 and the second track device 70 are both provided with a hook assembly, and the belt gear 40 is connected with the hook assembly through a transmission belt.

[0044] The first track device 60 and the second track device 70 are used in combination, and the adapter device 80 connects the first track device 60 and the second track device 70 to form an integrated structure. One end of the first track device 60 and one end of the second track device 70 are both provided with a vertical curtain transmission assembly for power transmission. Among them, the adapter device 80 is connected to the transmission gear 20, and one of the first track device 60 and the second track device 70 is connected to a power mechanism, such as the first track device 60 is connected to the power mechanism. The power output by the power mechanism is transmitted to the transmission gear 20 of the first track device 60. The adapter device 80 is provided with an intermediate gear, which is respectively engaged with the transmission gear 20 of the first track device 60 and the transmission gear 20 of the second track device 70. The intermediate gear transmits power to the transmission gear 20 of the second track device 70, so as to realize the synchronous movement of the hook assembly of the first track device 60 and the hook assembly of the second track device 70.

[0045] When the length of the first track device 60 is greater than the length of the second track device 70, after the hook assembly of the second track device 70 moves into position, the hook assembly of the first track assembly has not yet moved into position. The power mechanism continues to output power, and the transmission gear 20 and the magnetic member 50 of the second track device 70 slip, while the transmission gear 20 of the first track assembly continues to drive the hook assembly to move into position, so that the vertical curtain composed of track devices of different lengths can realize the function of the hook assembly opening and closing into position.

[0046] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0047] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A vertical curtain transmission assembly, characterized in that: The vertical curtain transmission assembly comprises a gear frame (10), a transmission gear (20), a transmission shaft (30) rotatably mounted on the gear frame (10), a magnetic member (50) connected to the transmission shaft (30), and a belt gear (40) connected to the transmission shaft (30), wherein the magnetic member (50) is connected to the transmission gear (20) by magnetic adsorption; When the torque force applied to the transmission shaft (30) is greater than the magnetic adsorption force, the transmission gear (20) rotates with slippage relative to the magnetic member (50).

2. The vertical curtain transmission assembly according to claim 1, characterized in that: The transmission gear (20) is made of magnetic metal material.

3. The vertical curtain transmission assembly according to claim 1, characterized in that: The transmission gear (20) is provided with a mounting groove (21), and at least a portion of the magnetic member (50) extends into the mounting groove (21).

4. The vertical curtain transmission assembly according to claim 3, characterized in that: The transmission gear (20) is provided with a central shaft (23), the central shaft (23) protruding from the center of the assembly groove (21), and the central shaft (23) and the transmission shaft (30) are plug-connected and rotatably connected.

5. The vertical curtain transmission assembly according to claim 3, characterized in that: The transmission gear (20) comprises at least two assembly cylinders (22) protruding from the assembly groove (21) and a ferromagnetic part (24) embedded in the assembly groove (21); the assembly cylinder (22) and the ferromagnetic part (24) are plug-fitted.

6. The vertical curtain transmission assembly according to claim 1, characterized in that: The transmission shaft (30) comprises a torque portion (31) and at least one transmission surface arranged on the torque portion (31); the torque portion (31) is plugged into the magnetic component (50) and is drivingly connected to the magnetic component (50).

7. The vertical curtain transmission assembly according to claim 1, characterized in that: The belt gear (40) and the gear frame (10) are rotatably connected, and the transmission shaft (30) and the belt gear (40) are plug-fitted via a spline structure.

8. The vertical curtain transmission assembly according to claim 1, characterized in that: The gear rack (10) is provided with a belt groove (11), the transmission shaft (30) passes through the belt groove (11) and is connected to the magnetic member (50), and the belt gear (40) is located in the belt groove (11).

9. The vertical curtain transmission assembly according to claim 8, characterized in that: The gear frame (10) is provided with a coaxially arranged rotating bearing (13) and a rotating member (12); the transmission shaft (30) is connected to the rotating bearing (13); and the belt gear (40) is connected to the rotating member (12).

10. A vertical curtain, comprising a first track device (60), a second track device (70) and a switching device (80), characterized in that: The vertical curtain further comprises the vertical curtain transmission assembly according to any one of claims 1 to 9, the first track device (60) and the second track device (70) are both equipped with the vertical curtain transmission assembly, the adapter device (80) is meshed and drivenly connected with the transmission gear (20), the first track device (60) and the second track device (70) are both provided with a hook assembly, and the belt gear (40) is connected to the hook assembly via a transmission belt.

Images