Mute motor of curtain

Abstract

The utility model relates to a mute motor of a curtain, which is characterized in that a motor driving part is arranged in a motor outer pipe, a flexible damping device is arranged in front of the motor driving part, the flexible damping device comprises a left coupling, the left coupling is meshed with a right coupling, the right coupling is in clearance fit connection with a transmission shaft, and the transmission shaft is connected with a motor secondary support. The motor secondary bracket is connected with a secondary bracket silicon rubber case; a motor first-stage support connected with the motor driving part is connected to the second-stage support silica gel sleeve, a step part is arranged on the motor first-stage support, and a first-stage support silica gel sleeve is connected to the step part; and flexible teeth in contact with the motor outer pipe are arranged on the primary bracket silicon rubber case and the secondary bracket silicon rubber case. The flexible damping device is arranged in front of the motor driving part, so that the output shaft of the driving part is flexibly connected with the transmission shaft, and noise caused by vibration of the transmission shaft is prevented. Meanwhile, after the flexible teeth on the flexible damping device make contact with the motor outer pipe, noise caused by vibration can be reduced, and therefore the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a silent motor for curtains. Background Technique

[0002] Chinese Patent Publication (Announcement) No.: CN116436198A, Patent Title: Tubular Motor and Electric Curtain, which discloses "

[0002] With the improvement of people's living standards, the requirements for the intelligence and automation of furniture are getting higher and higher. At present, more and more people choose electric curtains to achieve remote control of the opening and closing degree of the curtains. A tubular motor is arranged in the electric curtain, and the whole tubular motor is columnar... When the motor is running, vibrations will be generated, and the vibrations are transmitted to the outer tube, which will cause collisions between the outer tube and the sliding ring, thus generating noise, which will affect the user experience."

[0003] It solves the technical problem of "vibrations being transmitted to the outer tube, which will cause collisions between the outer tube and the sliding ring, thus generating noise" through the technical solution of "

[0005] A tubular motor, including a sleeve, a motor for driving the sleeve to rotate, and a stroke head arranged at the end of the sleeve... The roller is inserted and matched with the opening and keeps a distance from the inner wall of the groove in its radial direction". It solves the collision noise between the outer tube of the motor and the outside sliding ring. However, the collision noise between the outer tube of the motor and its internal parts also needs to be solved. Since the starting position of the vibrations generated by the motor is the output shaft of the motor (because concentricity errors will occur during manufacturing and assembly), and the transmission shaft is rigidly connected to the outer tube of the motor, the vibrations on its output shaft will be transmitted to the outer tube of the motor, also generating noise, thus affecting the user experience. Summary of the Invention

[0004] The purpose of the utility model is to provide a silent motor for curtains to solve the problems raised in the above background technique.

[0005] To solve the above technical problems, the present utility model is achieved through the following technical measures: A silent motor for a curtain, comprising a motor outer tube, within which a motor driving part is provided. A driving part output shaft is provided at the front end of the motor driving part. Among them, a flexible shock-absorbing device is provided in front of the motor driving part. The flexible shock-absorbing device includes a left coupling that is in clearance fit connection with the driving part output shaft. The left coupling meshes with a right coupling, and the right coupling is in clearance fit connection with a transmission shaft. A motor secondary bracket is connected to the transmission shaft, and a secondary bracket silica gel sleeve is connected to the motor secondary bracket; A motor primary bracket connected to the motor driving part is connected to the secondary bracket silica gel sleeve. A step portion is provided on the motor primary bracket, and a primary bracket silica gel sleeve is connected to the step portion; Flexible teeth in contact with the motor outer tube are provided on the primary bracket silica gel sleeve and the secondary bracket silica gel sleeve.

[0006] Compared with the prior art, the advantages of the present utility model are as follows: By providing a flexible shock-absorbing device in front of the motor driving part, a flexible connection is established between the driving part output shaft and the transmission shaft, preventing noise caused by the vibration of the transmission shaft. At the same time, after the flexible teeth on the flexible shock-absorbing device come into contact with the motor outer tube, the noise caused by vibration can also be reduced, thereby improving the user experience.

[0007] As an improvement of the present utility model, the left coupling and the right coupling have the same structure, and each coupling is provided with two identical sector-shaped meshing portions. Under normal conditions, there is a clearance fit between the two sector-shaped meshing portions. The purpose of selecting this design is to transmit torque through two non-directly contacting sector-shaped meshing portions to eliminate vibration.

[0008] As an improvement of the present utility model, a protruding portion is provided on the motor secondary bracket, and a groove is provided on the secondary bracket silica gel sleeve. After assembly, the two are in interference fit. The purpose of selecting this design is to fasten the motor secondary bracket to the secondary bracket silica gel sleeve.

[0009] As an improvement of the present utility model, an insertion piece portion is provided on the motor primary bracket, and an insertion piece cavity is provided on the secondary bracket silica gel sleeve. The purpose of selecting this design is to achieve a firm connection between the motor primary bracket and the secondary bracket silica gel sleeve by inserting the insertion piece portion into the insertion piece cavity. Description of the Drawings

[0010] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0011] In the drawings:

[0012] Figure 1Exploded view of the silent motor described in the present utility model.

[0013] Figure 2 Stereogram of the flexible shock-absorbing device described in the present utility model.

[0014] Figure 3 Exploded view of the flexible shock-absorbing device described in the present utility model.

[0015] Figure 4 Part drawing of the transmission shaft described in the present utility model.

[0016] Figure 5 Stereogram of the coupling described in the present utility model.

[0017] Figure 6 Stereogram of the silicone sleeve of the secondary bracket described in the present utility model Figure 1 .

[0018] Figure 7 Stereogram of the silicone sleeve of the secondary bracket described in the present utility model Figure 2 .

[0019] Marking description: 1. Motor outer tube; 2. Motor driving part; 3. Output shaft of the driving part; 4. Flexible shock-absorbing device; 5. Left coupling; 6. Right coupling; 7. Transmission shaft; 8. Motor secondary bracket; 9. Silicone sleeve of the secondary bracket; 10. Motor primary bracket; 11. Step part; 12. Silicone sleeve of the primary bracket; 13. Flexible tooth; 14. Sector engagement part; 15. Protrusion; 16. Groove; 17. Insertion piece part; 18. Insertion piece cavity; 19. Motor control part; 20. Battery rod; 21. Bearing tail plug; 22. Transmission hole; 23. Positioning hole; 24. First stepped shaft; 25. Second stepped shaft; 26. Third stepped shaft; 27. Engagement surface. Detailed implementation manners

[0020] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0021] Embodiment 1

[0022] Please refer to Figure 1 -7.

[0023] In the embodiment of the present utility model application, please refer to Figure 1, A silent motor for a curtain provided in this embodiment includes a motor outer tube 1. Inside the motor outer tube 1, a motor driving part 2 including a driving coil is provided. Behind the motor driving part 2, a battery rod 20 is connected. Behind the battery rod 20, a motor control part 19 for controlling the rotation stroke of the motor is connected. At the front end of the motor driving part 2, a driving part output shaft 3 is provided. In front of the motor driving part 2, a flexible shock absorption device 4 is provided.

[0024] In the embodiment of the present utility model application, please refer to Figure 2 and Figure 3 , The flexible shock absorption device 4 includes a left coupling 5 that is connected to the driving part output shaft 3 with a clearance fit. The left coupling 5 meshes with a right coupling 6. The right coupling 6 is connected to a transmission shaft 7 with a clearance fit. A motor secondary bracket 8 is connected to the transmission shaft 7. A secondary bracket silica gel sleeve 9 is connected to the motor secondary bracket 8. A motor primary bracket 10 connected to the motor driving part 2 is connected to the secondary bracket silica gel sleeve 9. A step portion 11 is provided on the motor primary bracket 10. A primary bracket silica gel sleeve 12 is connected to the step portion 11. Flexible teeth 13 in contact with the motor outer tube 1 are provided on the primary bracket silica gel sleeve 12 and the secondary bracket silica gel sleeve 9.

[0025] In the embodiment of the present utility model application, please refer to Figure 4 , On the second output shaft, from left to right, a first stepped shaft 24, a second stepped shaft 25 and a third stepped shaft 26 are respectively provided, and are separated by a cotter pin in the middle. Among them, the first stepped shaft 24 is used to fit into the transmission hole 22 of the right coupling 6, and the two are in clearance fit to achieve power transmission. The second stepped shaft 25 is used to fix the positioning hole 23 of the motor secondary bracket 8, and the secondary bracket silica gel sleeve 9 is fixed on the motor secondary bracket 8. The third stepped shaft 26 is used to fix the bearing tail plug 21.

[0026] In the embodiment of the present utility model application, please refer to Figure 5 , The left coupling 5 and the right coupling 6 have the same structure. Each coupling is provided with two identical sector-shaped meshing parts 14, and the sector angle is close to 90 degrees but slightly less than 90 degrees. Under normal conditions, there is a clearance fit between the meshing surfaces 27 of the two sector-shaped meshing parts 14. Torque is transmitted through two non-directly contacting meshing surfaces 27 to eliminate vibration.

[0027] In the embodiment of the present utility model application, please refer to Figure 6 , The motor secondary bracket 8 is provided with a protruding portion 15, and the secondary bracket silica gel sleeve 9 is provided with a groove 16. After assembly, the two are in interference fit to fasten the motor secondary bracket 8 on the secondary bracket silica gel sleeve 9.

[0028] In the embodiment of the present utility model application, please refer toFigure 7 A inserting piece part 17 is provided on the first-stage bracket 10 of the motor, and an inserting piece cavity 18 is provided on the second-stage bracket silica gel sleeve 9. By inserting the inserting piece part 17 into the inserting piece cavity 18, the connection between the first-stage bracket 10 of the motor and the second-stage bracket silica gel sleeve 9 is realized. Finally, bolts are sequentially screwed into the inserting piece part 17, the second-stage bracket silica gel sleeve 9 and the second-stage bracket 8 of the motor to realize the rigid connection of the three.

[0029] The beneficial effects of the present utility model are as follows: By arranging a flexible shock absorption device 4 in front of the motor driving part 2, a flexible connection is formed between the output shaft 3 of the driving part and the transmission shaft 7, preventing the noise caused by the vibration of the transmission shaft 7. At the same time, after the flexible teeth 13 on the flexible shock absorption device 4 contact the outer tube 1 of the motor, the noise caused by vibration can also be reduced, thereby improving the user experience.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" 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, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A silent motor for a curtain, comprising a motor outer tube (1), wherein a motor driving part (2) is arranged inside the motor outer tube (1), and a driving part output shaft (3) is arranged at the front end of the motor driving part (2), and the characteristics are that: at A flexible shock absorber device (4) is provided in front of the motor drive unit (2). The flexible shock absorber device (4) includes a left coupling (5) that is connected to the output shaft (3) of the drive unit with a clearance fit. The left coupling (5) meshes with a right coupling (6). The right coupling (6) is connected to a transmission shaft (7) with a clearance fit. A motor secondary bracket (8) is connected to the transmission shaft (7). A secondary bracket silica gel sleeve (9) is connected to the motor secondary bracket (8). A motor primary bracket (10) that is connected to the motor drive unit (2) is connected to the secondary bracket silica gel sleeve (9). A stepped portion (11) is provided on the motor primary bracket (10). A primary bracket silica gel sleeve (12) is connected to the stepped portion (11). Flexible teeth (13) that are in contact with the motor outer tube (1) are provided on the primary bracket silica gel sleeve (12) and the secondary bracket silica gel sleeve (9).

2. The silent motor of the curtain according to claim 1, characterized in that: The left coupling (5) and the right coupling (6) have the same structure. Each coupling is provided with two identical sector-shaped meshing portions (14). Under normal conditions, there is a clearance fit between the two sector-shaped meshing portions (14).

3. The silent motor for curtains according to claim 1, characterized in that: A protruding portion (15) is provided on the motor secondary bracket (8). A groove (16) is provided on the secondary bracket silica gel sleeve (9). After assembly, they are in interference fit with each other.

4. The silent motor for a curtain according to claim 1, characterized in that: A inserting piece portion (17) is provided on the motor primary bracket (10). An inserting piece cavity (18) is provided on the secondary bracket silica gel sleeve (9).

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