Parallel transmission device for electric curtain

Abstract

The parallel transmission device for the electric curtain comprises a motor and a speed reducer, the speed reducer comprises an input shaft and an output shaft, the input shaft is connected with the output end of the motor, the output shaft is coaxially meshed with the inner wall of an output gear, the outer wall of the output gear is in vertical meshed transmission with a transmission wheel through a synchronizing wheel, and the transmission wheel is a hollow hole gear. In order to replace a manual curtain with an electric curtain, the manual curtain does not need to be completely disassembled, upgrading can be achieved only by arranging the parallel transmission device for the electric curtain on an original transmission shaft in a sleeving mode and fixing the transmission wheel through the limiting ring, and cost and complexity of electric transformation are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of curtain accessories, in particular to a parallel transmission device for electric curtains. Background Art

[0002] Curtains have become an indispensable decorative object in daily life. With the advancement of social technology, more and more families choose electric curtains. To convert traditional manual curtains into electric curtains, the original curtains need to be removed and replaced and reinstalled, which not only causes waste of materials, but also is difficult. At the same time, the construction and wiring process can easily damage the wall. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a parallel transmission device for electric curtains, comprising:

[0004] Motor;

[0005] The reducer includes an input shaft and an output shaft. The input shaft is connected to the output end of the motor. The output shaft is coaxially meshed with the inner wall of the output gear. The outer wall of the output gear is vertically meshed with the transmission wheel through a synchronous wheel. The transmission wheel is a hollow hole gear.

[0006] Furthermore, the parallel transmission device for electric curtains also includes a transmission shaft, which is parallel to the output shaft of the reducer and coaxially meshed with the inner wall of the transmission wheel.

[0007] Furthermore, at least two limiting rings are provided on the transmission shaft, and the limiting rings are respectively located on both sides of the transmission wheel.

[0008] Furthermore, the reducer also includes a first gear set, a second gear set and a third gear set which are connected in sequence and arranged in the housing.

[0009] Furthermore, the input end of the first gear set is connected to the input shaft, and the output end of the third gear set is connected to the output shaft.

[0010] Furthermore, the first gear group includes a first sun gear, a first planetary gear, a first planetary carrier and a first internal gear. The first sun gear is connected to the input shaft and meshes with the outer surface of the first planetary gear. The first planetary gear is arranged on the first planetary carrier through the planetary shaft. The first planetary gear is meshed with the first internal gear. The first planetary gear performs a combined motion of rotation and revolution under the restriction of the first internal gear.

[0011] Furthermore, the second gear group includes a second sun gear, a second planetary gear, a second planetary carrier and a second internal gear. The second sun gear is connected to the first planetary carrier and meshes with the outer surface of the second planetary gear. The second planetary gear is arranged on the second planetary carrier through a planetary shaft. The second planetary gear is meshed with a second internal gear. The second planetary gear performs a combined motion of rotation and revolution under the restriction of the second internal gear.

[0012] Furthermore, the third gear group includes a third sun gear, a third planetary gear, a third planetary carrier and a third internal gear. The third sun gear is connected to the second planetary carrier and meshes with the outer surface of the third planetary gear. The third planetary gear is arranged on the third planetary carrier through a planetary shaft. The third planetary carrier is connected to the output shaft. The third planetary gear is meshed with a third internal gear. The third planetary gear performs a combined motion of rotation and revolution under the restriction of the third internal gear.

[0013] Furthermore, the synchronous wheel comprises a synchronous wheel body, and the synchronous wheel body comprises a plastic synchronous wheel and a metal synchronous wheel nested in the plastic synchronous wheel.

[0014] Furthermore, the transmission shaft is made of aluminum alloy or stainless steel, and the limiting ring is made of elastic material.

[0015] The beneficial effect is that when the user wants to replace the manual curtains with electric curtains, there is no need to dismantle the manual curtains completely. The user only needs to put the electric curtains on the original transmission shaft with a parallel transmission device, and then fix the transmission wheel with a limit ring. The operation is simple and practical, which greatly reduces the cost and complexity of the electrification transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of a parallel transmission device for electric curtains;

[0018] Figure 2 It is a cross-sectional view of a parallel transmission device for electric curtains;

[0019] In the figure:

[0020] 1. Motor; 2. Reducer; 21. Output gear; 22. Synchronous wheel; 23. Transmission wheel; 3. Transmission shaft; 31. Limiting ring. DETAILED DESCRIPTION

[0021] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0022] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, in the present utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present utility model. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0024] Example

[0025] See also Figure 1 and Figure 2 ,in Figure 1 This is a schematic diagram of the overall structure of the parallel transmission device for electric curtains. Figure 2 The cross-sectional view of the parallel transmission device for electric curtains, this embodiment provides a parallel transmission device for electric curtains, including a motor 1 and a reducer 2, wherein the reducer 2 includes an input shaft and an output shaft, the input shaft is connected to the output end of the motor 1, the output shaft is coaxially meshed with the inner wall of the output gear 21, and the outer wall of the output gear 21 is vertically meshed with the transmission wheel 23 through the synchronous wheel 22, which can ensure that the motor is installed in parallel above or below the transmission shaft of the curtain, greatly increasing the use width of the curtain. The transmission wheel 23 is a hollow hole gear, and the transmission wheel 23 can be sleeved on the transmission shaft to flexibly adjust the position of the transmission wheel 23 and thus change the position of the motor. The synchronous wheel 22 includes a synchronous wheel body, and the synchronous wheel body includes a plastic synchronous wheel and a metal synchronous wheel nested in the plastic synchronous wheel, which can greatly reduce shock and noise.

[0026] See also Figure 1 and Figure 2The parallel transmission device for electric curtains also includes a transmission shaft 3. The transmission shaft 3 is made of aluminum alloy or stainless steel, which is lighter and more durable. It is parallel to the output shaft of the reducer 2 and coaxially meshed with the inner wall of the transmission wheel. At least two limit rings 31 are provided on the transmission shaft 3. The limit rings 31 are respectively located on both sides of the transmission wheel 23 for fixing the transmission wheel 23. The limit rings 31 are made of elastic material to avoid scratching the transmission shaft 3, and the friction coefficient between the limit rings 31 and the transmission shaft 3 is larger, which can better fix the transmission wheel 23.

[0027] See also Figure 1 and Figure 2 The reducer 2 of the parallel transmission device for electric curtains also includes a first gear set, a second gear set and a third gear set which are connected in sequence and arranged in the housing. The input end of the first gear set is connected to the input shaft, and the output end of the third gear set is connected to the output shaft. The first gear set includes a first sun gear, a first planetary gear, a first planetary carrier and a first internal gear. The first sun gear is connected to the input shaft and meshes with the outer surface of the first planetary gear. The first planetary gear is arranged on the first planetary carrier through a planetary shaft. The first planetary gear meshes with the first internal gear. The first planetary gear performs a combined motion of self-rotation and revolution under the restriction of the first internal gear. The second gear set includes a second sun gear, a second planetary gear, a second planetary carrier and a second internal gear. The second sun gear is connected to the first planetary carrier and meshes with the outer surface of the second planetary gear. The second planetary gear is arranged on the second planetary carrier through a planetary shaft. The second planetary gear meshes with the second internal gear. The second planetary gear performs a combined motion of self-rotation and revolution under the restriction of the second internal gear. The third gear set includes a third sun gear, a third planetary gear, a third planetary carrier and a third internal gear. The third sun gear is connected to the second planetary carrier and meshes with the outer surface of the third planetary gear. The third planetary gear is arranged on the third planetary carrier through a planetary shaft. The third planetary carrier is connected to the output shaft. The third planetary gear meshes with the third internal gear. The third planetary gear performs a combined motion of rotation and revolution under the restriction of the third internal gear. Since the curtain switch requires frequent forward and reverse electric drive mechanisms, the reducer 2 with this design can reduce the occurrence rate of failures.

[0028] In summary, this technical solution has the following advantages:

[0029] First, it is easy to upgrade and transform. If you want to replace manual curtains with electric curtains, there is no need to dismantle all the manual curtains. You only need to put the electric curtains on the original transmission shaft with a parallel transmission device, and then fix the transmission wheel with a limit ring to achieve the upgrade, which greatly reduces the cost and complexity of electrification transformation.

[0030] Second, it is highly compatible. This technical solution takes into account the compatibility with the existing manual curtain system, so that the electrification transformation is not limited to newly installed curtains, but is also applicable to existing manual curtains, greatly expanding the market application scope of the product.

[0031] The above is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A parallel transmission device for electric curtains, characterized in that: include: Motor (1); The reducer (2) comprises an input shaft and an output shaft, wherein the input shaft is connected to the output end of the motor (1), the output shaft is coaxially meshed with the inner wall of the output gear (21), the outer wall of the output gear (21) is vertically meshed with the transmission wheel (23) through a synchronous wheel (22), and the transmission wheel (23) is a hollow hole gear; A transmission shaft (3) which is parallel to the output shaft of the reducer (2) and is coaxially meshed with the inner wall of the transmission wheel (23); At least two limiting rings (31) are provided on the transmission shaft (3), and the limiting rings (31) are respectively located on both sides of the transmission wheel (23).

2. The parallel transmission device for electric curtains according to claim 1, characterized in that: The reducer (2) also comprises a first gear set, a second gear set and a third gear set which are connected in sequence and arranged in the housing.

3. The parallel transmission device for electric curtains according to claim 2, characterized in that: The input end of the first gear set is connected to the input shaft, and the output end of the third gear set is connected to the output shaft.

4. The parallel transmission device for electric curtains according to claim 2, characterized in that: The first gear set includes a first sun gear, a first planetary gear, a first planetary carrier and a first internal gear. The first sun gear is connected to the input shaft and meshes with the outer surface of the first planetary gear. The first planetary gear is arranged on the first planetary carrier through a planetary shaft. The first planetary gear is meshed with the first internal gear. The first planetary gear performs a combined motion of rotation and revolution under the restriction of the first internal gear.

5. The parallel transmission device for electric curtains according to claim 4, characterized in that: The second gear set includes a second sun gear, a second planetary gear, a second planetary carrier and a second internal gear. The second sun gear is connected to the first planetary carrier and meshes with the outer surface of the second planetary gear. The second planetary gear is arranged on the second planetary carrier through a planetary shaft. The second planetary gear is meshed with a second internal gear. The second planetary gear performs a combined motion of rotation and revolution under the restriction of the second internal gear.

6. The parallel transmission device for electric curtains according to claim 5, characterized in that: The third gear set includes a third sun gear, a third planetary gear, a third planet carrier and a third internal gear. The third sun gear is connected to the second planet carrier and meshes with the outer surface of the third planetary gear. The third planetary gear is set on the third planet carrier through a planetary shaft. The third planet carrier is connected to the output shaft. The third planetary gear is meshed with a third internal gear. The third planetary gear performs a combined motion of rotation and revolution under the restriction of the third internal gear.

7. The parallel transmission device for electric curtains according to claim 1, characterized in that: The synchronous wheel (22) comprises a synchronous wheel body, wherein the synchronous wheel body comprises a plastic synchronous wheel and a metal synchronous wheel embedded in the plastic synchronous wheel.

8. The parallel transmission device for electric curtains according to claim 1, characterized in that: The transmission shaft (3) is made of aluminum alloy or stainless steel, and the limiting ring (31) is made of elastic material.

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