Main transmission case structure of curtain

Abstract

The utility model discloses a main transmission case structure of a curtain. The main transmission case structure comprises a lower shell, an upper shell, a synchronous pulley, a first bearing and a second bearing, the middle side wall of the connecting shaft is sleeved with the connecting ring, the middle of the inner wall of the gear ring is connected with the outer wall of the connecting ring, an annular mounting cavity is formed among the outer wall of the connecting shaft, the lower portion of the connecting ring and the inner wall of the gear ring, and the first connecting end of the connecting shaft is connected with the motor; the outer ring of the first bearing is mounted in the outer shell, the outer shell and the first bearing are both arranged in the mounting cavity, and the inner ring of the first bearing sleeves the outer wall of the connecting shaft; an inner ring of the second bearing is arranged on the outer wall of the second connecting end of the connecting shaft in a sleeving mode, and an outer ring of the second bearing is installed on the upper shell. According to the main transmission case, the first bearing close to the first connecting end is embedded into the synchronous belt wheel, so that the height of the synchronous belt wheel is reduced, the size of the main transmission case is reduced, the number of parts is reduced compared with the prior art, the transmission stage number is reduced, and the transmission efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of curtain transmission structure, and in particular to a curtain main transmission box structure. Background Technology

[0002] With the development of science and technology, smart curtains are gradually entering thousands of households. Smart curtains mainly consist of a smart curtain motor, curtain track, and curtain fabric. The smart curtain track mainly comprises a main drive box (connected to the smart curtain motor), a secondary drive box, a synchronous belt, pulleys, and ball bearings. Because the input shaft of the drive box needs to be fixed with bearings at both ends, if the synchronous pulley were directly connected to the output shaft of the smart curtain motor, the meshing position of the synchronous belt and pulley would conflict with the bearing position. Therefore, most manufacturers use gears instead of synchronous pulleys for the input shaft, and then transmit power to the synchronous pulley through the gears. This increases the number of parts and reduces efficiency, because the more transmission stages, the lower the overall transmission efficiency.

[0003] Therefore, it is necessary to develop a curtain main drive box structure to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to design a curtain main drive box structure to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A curtain main drive box structure includes:

[0007] Lower housing; a through hole is provided at the bottom of the lower housing, and an annular outer housing is provided at the bottom of the lower housing;

[0008] Upper shell;

[0009] Synchronous pulley; The synchronous pulley includes a connecting shaft, a connecting ring, and a gear ring. The connecting ring is fitted onto the middle side wall of the connecting shaft. The middle of the inner wall of the gear ring is connected to the outer wall of the connecting ring. An annular mounting cavity is formed between the outer wall of the connecting shaft, the lower part of the connecting ring, and the inner wall of the gear ring. The first connecting end of the connecting shaft is connected to the motor.

[0010] The first bearing; the outer ring of the first bearing is installed in the housing, both the housing and the first bearing are placed in the mounting cavity, and the inner ring of the first bearing is fitted onto the outer wall of the connecting shaft;

[0011] The second bearing; the inner ring of the second bearing is fitted onto the outer wall of the second connecting end of the connecting shaft, and the outer ring of the second bearing is mounted on the upper housing.

[0012] The beneficial effects of this utility model are as follows:

[0013] In this application, the first bearing near the first connection end is embedded inside the synchronous pulley, thereby reducing the height of the synchronous pulley, which in turn reduces the volume of the main transmission box. The number of parts is also reduced compared to the prior art, reducing the number of transmission stages and improving transmission efficiency. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a curtain main drive box.

[0015] Figure 2 This is a longitudinal sectional view of a curtain main drive box structure.

[0016] Figure 3 A cross-sectional view of a curtain main drive box structure;

[0017] Figure 4 This is a cross-sectional view of the timing pulley in this application.

[0018] Legend: 1-Lower housing; 2-Connecting seat; 3-Outer housing; 4-Upper housing; 5-Mounting housing; 6-Synchronous pulley; 61-Connecting shaft; 62-First connecting end; 63-Second connecting end; 64-Connecting ring; 65-Gear ring; 7-First bearing; 8-Second bearing; 9-Synchronous belt; 10-Aluminum profile track. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, a curtain main drive box structure includes:

[0027] Lower housing 1; a through hole is provided at the bottom of the lower housing 1, and an annular outer housing 3 is provided at the bottom of the lower housing 1;

[0028] Upper shell 4;

[0029] Synchronous pulley 6; Synchronous pulley 6 includes a connecting shaft 61, a connecting ring 64, and a gear ring 65. The connecting ring 64 is perpendicular to the connecting shaft 61 and the gear ring 65 respectively. The connecting ring 64 is fitted onto the middle side wall of the connecting shaft 61. The middle part of the inner wall of the gear ring 65 is connected to the outer wall of the connecting ring 64. An annular mounting cavity is formed between the outer wall of the connecting shaft 61, the lower part of the connecting ring 64, and the inner wall of the gear ring 65. The first connecting end 62 of the connecting shaft 61 is connected to the motor.

[0030] First bearing 7; the outer ring of the first bearing 7 is installed inside the outer casing 3, both the outer casing 3 and the first bearing 7 are placed in the mounting cavity, and the inner ring of the first bearing 7 is fitted onto the outer wall of the connecting shaft 61;

[0031] The second bearing 8; the inner ring of the second bearing 8 is fitted onto the outer wall of the second connecting end 63 of the connecting shaft 61, and the outer ring of the second bearing 8 is mounted on the upper housing 4.

[0032] In this application, the solid synchronous pulley 6 of the prior art is formed with an annular mounting cavity at the end, so that the first bearing 7 can be placed in the annular mounting cavity, thereby reducing the height of the synchronous pulley 6.

[0033] like Figure 1 and 2 As shown, in some embodiments, a barrel-shaped mounting shell 5 is provided on the upper housing 4, and the outer ring of the second bearing 8 is mounted on the inner wall of the mounting shell 5.

[0034] like Figure 2 and 3 As shown, in some embodiments, a connecting seat 2 protruding upwards is provided at the bottom of the lower housing 1, and a screw hole is provided in the connecting seat 2. Correspondingly, a countersunk hole is provided on the upper housing 4. The top of the connecting seat 2 connects to the bottom of the countersunk hole, and a countersunk bolt passes through the countersunk hole and is screwed into the thread. Multiple such structures are provided in this application, and the purpose of the structure is to connect the upper housing 4 and the lower housing 1.

[0035] like Figure 1-3 As shown, the aluminum profile track 10 is installed on the outside of the first side of the lower housing 1. The first side of the lower housing 1 is provided with a through hole for the timing belt 9 to pass through. The timing belt 9 passes through the through hole after going around the toothed ring 65 and is placed inside the aluminum profile track 10.

[0036] In this application, it is preferred that the synchronous pulley 6, the upper housing 4, and the lower housing 1 are all plastic parts. During the assembly of the first bearing 7 and the second bearing 8, the thin walls of the plastic parts can deform significantly during the installation of the first bearing 7 and the second bearing 8, which facilitates the installation of the first bearing 7 and the second bearing 8.

[0037] Working principle: During operation, the motor drives the first connecting end 62 of the connecting shaft 61 to rotate, the connecting shaft 61 drives the connecting ring 64 and the gear ring 65 to rotate, the gear ring 65 drives the synchronous belt 9 to drive, and the synchronous belt 9 drives the curtain cloth installed on it to slide along the aluminum profile track 10, thereby realizing the opening and closing function of the smart curtain; the first bearing 7 and the second bearing 8 both serve to rotate and support the connecting shaft 61.

[0038] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A curtain main drive box structure, characterized in that, include: Lower housing; a through hole is provided at the bottom of the lower housing, and an annular outer housing is provided at the bottom of the lower housing; Upper shell; Synchronous pulley; The synchronous pulley includes a connecting shaft, a connecting ring, and a gear ring. The connecting ring is fitted onto the middle side wall of the connecting shaft. The middle of the inner wall of the gear ring is connected to the outer wall of the connecting ring. An annular mounting cavity is formed between the outer wall of the connecting shaft, the lower part of the connecting ring, and the inner wall of the gear ring. The first connecting end of the connecting shaft is connected to the motor. The first bearing; the outer ring of the first bearing is installed in the housing, both the housing and the first bearing are placed in the mounting cavity, and the inner ring of the first bearing is fitted onto the outer wall of the connecting shaft; The second bearing; the inner ring of the second bearing is fitted onto the outer wall of the second connecting end of the connecting shaft, and the outer ring of the second bearing is mounted on the upper housing.

2. The curtain main drive box structure according to claim 1, characterized in that, The connecting ring is perpendicular to the connecting shaft and the gear ring, respectively.

3. The curtain main drive box structure according to claim 1, characterized in that, A barrel-shaped mounting shell is provided on the upper housing, and the outer ring of the second bearing is mounted on the inner wall of the mounting shell.

4. The curtain main drive box structure according to claim 1, characterized in that, The bottom of the lower housing has an upward-protruding connecting seat with a screw hole. Correspondingly, the upper housing has a countersunk hole. The top of the connecting seat connects to the bottom of the countersunk hole, and a countersunk bolt passes through the countersunk hole and is screwed into the thread.

5. The curtain main drive box structure according to claim 1, characterized in that, The aluminum profile track is installed on the outside of the first side of the lower housing. The first side of the lower housing is provided with a through hole for the timing belt to pass through. After the timing belt passes around the toothed ring, it passes through the through hole and is placed inside the aluminum profile track.

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