Clutch noise reduction structure of curtain reduction gearbox
By installing noise-reducing pads between the clutch and the magnetic disc, the noise and wear problems of electric curtains are solved, achieving the effects of noise reduction and extended service life.
Patent Information
- Application Number
- CN202520099965.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-01-15
AI Technical Summary
The clutch of existing electric blinds generates a harsh noise when it rubs against the magnetic disc during operation, which leads to increased wear and affects its service life.
A noise-reducing shim is installed between the clutch and the magnetic disc to avoid direct contact. The plastic noise-reducing shim bears the pressure to reduce friction, lower noise, and extend service life.
It effectively reduces noise, minimizes friction, extends the service life of the clutch and magnetic disc, and ensures the normal operation of the curtain gearbox.
Smart Images
Figure CN223578786U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of window curtain reduction gearbox equipment, and particularly relates to a clutch noise reduction structure of window curtain reduction gearbox. BACKGROUND
[0002] With the improvement of people's living standards, the demand for electric curtains is increasing, and the performance and quality of electric curtains are also expected. The clutch is the core component of the electric curtain, and the structure and performance of the clutch directly reflect the taste and grade of the electric curtain. In the prior art, the clutch in the reduction gearbox will rub against the magnetic disc when running, producing a harsh noise, affecting normal use by the user, and causing the surface of the clutch and the magnetic disc to wear out, damaging the clutch and the magnetic disc, and thus affecting the service life. SUMMARY
[0003] The utility model aims at the above problem, provides a clutch noise reduction structure of window curtain reduction gearbox.
[0004] To achieve the above object, the utility model adopts the following technical scheme: a clutch noise reduction structure of window curtain reduction gearbox, including transmission gear that rotates to set in the reduction gearbox body, the reduction gearbox body upper end outside is equipped with output gear, and transmission gear and output gear are connected through clutch, the clutch has the driving clutch spare that sets in the reduction gearbox body upper end outside and is linked with transmission gear, the driving clutch spare is connected with output gear through one-way clutch assembly, and the reduction gearbox body upper end is equipped with the magnetic disc that is located driving clutch spare below and corresponds with one-way clutch assembly, driving clutch spare and magnetic disc between be equipped with the noise reduction gasket. The noise reduction gasket can avoid the direct contact between the driving clutch and the magnetic disc, thereby improving the noise effect, and can also withstand a certain pressure to reduce friction.
[0005] In the above-mentioned clutch noise reduction structure of window curtain reduction gearbox, the upper end surface of the reduction gearbox body has an annular positioning ring, and the magnetic disc is arranged in the annular positioning ring and the upper end of the magnetic disc does not exceed the annular positioning ring. The magnetic disc is installed in the annular positioning ring, which plays a certain fixing role.
[0006] In the above-mentioned clutch noise reduction structure of window curtain reduction gearbox, the annular positioning ring is integrally formed on the upper end of the reduction gearbox body, and the upper end of the magnetic disc is flush with the upper end of the annular positioning ring. This can ensure that the noise reduction gasket is accurately connected to the reduction gearbox body.
[0007] In the clutch noise reduction structure of the window curtain deceleration box, the noise reduction gasket is made of plastic material, and the lower end of the noise reduction gasket is provided with a gasket positioning ring, the gasket positioning ring is sleeved on the outer side of the annular positioning ring, and the upper end surface of the magnetic disc is in contact with the lower end surface of the noise reduction gasket. The noise reduction gasket has certain flexibility and wear resistance, the gasket positioning ring can cover the annular positioning ring, and the structure design is reasonable.
[0008] In the clutch noise reduction structure of the window curtain deceleration box, the noise reduction gasket is made of plastic material, and the lower end of the noise reduction gasket is provided with a gasket positioning ring, the gasket positioning ring is sleeved on the outer side of the annular positioning ring, and the upper end surface of the magnetic disc is in contact with the lower end surface of the noise reduction gasket. The noise reduction gasket has certain flexibility and wear resistance, the gasket positioning ring can cover the annular positioning ring, and the structure design is reasonable.
[0009] In the clutch noise reduction structure of the window curtain deceleration box, the noise reduction gasket is made of plastic material, and the lower end of the noise reduction gasket is provided with a gasket positioning ring, the gasket positioning ring is sleeved on the outer side of the annular positioning ring, and the upper end surface of the magnetic disc is in contact with the lower end surface of the noise reduction gasket. The noise reduction gasket has certain flexibility and wear resistance, the gasket positioning ring can cover the annular positioning ring, and the structure design is reasonable.
[0010] In the clutch noise reduction structure of the window curtain deceleration box, the noise reduction gasket is made of plastic material, and the lower end of the noise reduction gasket is provided with a gasket positioning ring, the gasket positioning ring is sleeved on the outer side of the annular positioning ring, and the upper end surface of the magnetic disc is in contact with the lower end surface of the noise reduction gasket. The noise reduction gasket has certain flexibility and wear resistance, the gasket positioning ring can cover the annular positioning ring, and the structure design is reasonable.
[0011] In the clutch noise reduction structure of the window curtain deceleration box, the noise reduction gasket is made of plastic material, and the lower end of the noise reduction gasket is provided with a gasket positioning ring, the gasket positioning ring is sleeved on the outer side of the annular positioning ring, and the upper end surface of the magnetic disc is in contact with the lower end surface of the noise reduction gasket. The noise reduction gasket has certain flexibility and wear resistance, the gasket positioning ring can cover the annular positioning ring, and the structure design is reasonable.
[0012] In the clutch noise reduction structure of the window curtain speed reducer box, the one-way clutch assembly comprises a clutch cylinder body arranged at the lower end of the output gear, the clutch cylinder body is arranged on the circumferential periphery of the driving clutch part and corresponds to the magnetic disc, two corresponding grooves are arranged on the circumferential inner side of the clutch cylinder body, a rolling body is arranged in the clutch cylinder body and is attracted by the magnetic disc, a boss is arranged at the center of the clutch cylinder body and is arranged at the lower end of the output gear, and a positioning column is arranged on the boss and is inserted into the positioning hole of the center of the driving clutch part. Compared with the prior art, the one-way clutch assembly helps to realize the stable one-way opening and closing of the window curtain, ensures that the power can be effectively transmitted to the window curtain when the electric window curtain is normally operated, and separates the motor from the transmission of the window curtain track in the power-off state, facilitates manual opening and closing of the window curtain by the user, prevents the motor from reversing when the window curtain is accidentally stressed, avoids damage of the motor and the parts in the speed reducer box body due to overload or reverse stress, and prolongs the service life of the motor and the speed reducer box body.
[0013] In the clutch noise reduction structure of the window curtain speed reducer box, the one-way clutch assembly comprises a clutch cylinder body arranged at the lower end of the output gear, the clutch cylinder body is arranged on the circumferential periphery of the driving clutch part and corresponds to the magnetic disc, two corresponding grooves are arranged on the circumferential inner side of the clutch cylinder body, a rolling body is arranged in the clutch cylinder body and is attracted by the magnetic disc, a boss is arranged at the center of the clutch cylinder body and is arranged at the lower end of the output gear, and a positioning column is arranged on the boss and is inserted into the positioning hole of the center of the driving clutch part.
[0014] Compared with the prior art, the one-way clutch assembly helps to realize the stable one-way opening and closing of the window curtain, ensures that the power can be effectively transmitted to the window curtain when the electric window curtain is normally operated, and separates the motor from the transmission of the window curtain track in the power-off state, facilitates manual opening and closing of the window curtain by the user, prevents the motor from reversing when the window curtain is accidentally stressed, avoids damage of the motor and the parts in the speed reducer box body due to overload or reverse stress, and prolongs the service life of the motor and the speed reducer box body.
[0015] The device is installed between the clutch and the magnetic disc, which can avoid direct contact between the clutch and the magnetic disc, reduce noise, improve noise effect, withstand certain pressure, prolong the service life of the clutch and the magnetic disc, and ensure normal use of the window curtain speed reducer box. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] Figure 2 It is a structural explosion diagram of the utility model.
[0018] Figure 3 It is a structural sectional view of the utility model.
[0019] Figure 4 It is a structural schematic diagram of the speed reducer box in the utility model.
[0020] Figure 5 It is a structural schematic diagram of the noise reduction gasket in the utility model.
[0021] Figure 6 It is a structural schematic diagram of the output gear in the utility model.
[0022] In the diagram: 1. Gearbox 11. Transmission gear 11. Output gear 12. Magnetic disk 13. Annular positioning ring 14. Gearbox extension 15. Connecting hole 16. Clutch 2. Active clutch 3. Clutch shaft 31. Connecting part 32. Positioning hole 33. One-way clutch assembly 4. Clutch cylinder 41. Groove 42. Boss 43. Positioning post 44. Noise reduction shim 5. Shim positioning ring 51. Shim positioning part 52. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0024] like Figures 1-6 As shown, a noise reduction structure for a curtain gearbox includes a transmission gear 11 rotatably mounted inside a gearbox body 1. An output gear 12 is located on the outer side of the upper end of the gearbox body 1, and the transmission gear 11 and output gear 12 are connected via a clutch 2. The clutch 2 has an active clutch component 3 located on the outer side of the upper end of the gearbox body 1 and linked to the transmission gear 11. The active clutch component 3 is connected to the output gear 12 via a one-way clutch assembly 4. A magnetic disk 13 is located below the active clutch component 3 and corresponding to the one-way clutch assembly 4 at the upper end of the gearbox body 1. A noise reduction pad 5 is provided between the active clutch component 3 and the magnetic disk 13. The noise reduction pad 5 prevents direct contact between the active clutch component 3 and the magnetic disk 13, thereby improving noise reduction performance, and also allows it to withstand certain pressure, reducing friction.
[0025] Combination Figure 3 and Figure 4 As shown, the upper surface of the gearbox 1 has an annular positioning ring 14, and the magnetic disk 13 is disposed within the annular positioning ring 14 with its upper end not exceeding the annular positioning ring 14. The magnetic disk 13, installed within the annular positioning ring 14, serves a certain fixing function.
[0026] The annular positioning ring 14 is integrally formed on the upper end of the gearbox 1, and the upper end of the magnetic disk 13 is flush with the upper end of the annular positioning ring 14. This ensures that the noise reduction pad 5 is accurately connected to the gearbox 1.
[0027] Combination Figure 3 , Figure 4 and Figure 5 As shown, the noise-reducing pad 5 is made of plastic and has a pad positioning ring 51 at its lower end. The pad positioning ring 51 is sleeved around the annular positioning ring 14 and circumferentially outwards, with the upper surface of the magnetic disk 13 in contact with the lower surface of the noise-reducing pad 5. The noise-reducing pad 5 has a certain degree of flexibility and wear resistance, and the pad positioning ring 51 can cover the annular positioning ring 14, resulting in a reasonable structural design.
[0028] The upper end surface of the noise reduction gasket 5 is not in contact with the driving clutch 3, and the gasket positioning ring 51 is integrally formed on the lower end of the noise reduction gasket 5, and the height of the gasket positioning ring 51 is less than the height of the annular positioning ring 14, and the lower end of the gasket positioning ring 51 is not in contact with the upper end of the reduction gearbox 1.
[0029] Specifically, the upper end of the reduction gearbox 1 has a gearbox extension 15 extending upward on one side, and one end of the noise reduction gasket 5 has a gasket positioning portion 52 extending to one side of the gearbox extension 15 and matching the shape of the gearbox extension 15. The gearbox extension 15 and the gasket positioning portion 52 play a fixed role in the noise reduction gasket 5, and can prevent the noise reduction gasket 5 from rotating.
[0030] As shown in Figure 2 , the driving clutch 3 is in the form of a cam, and the lower end of the driving clutch 3 is connected to the clutch shaft 31 which penetrates into the reduction gearbox 1, and the clutch shaft 31 penetrates the noise reduction gasket 5, the magnetic disc 13 and the upper end of the reduction gearbox 1 in turn, and the clutch shaft 31 is rotatably arranged with the noise reduction gasket 5, the magnetic disc 13 and the reduction gearbox 1.
[0031] The lower end of the clutch shaft 31 has a connecting portion 32, and the cross section of the connecting portion 32 is non-circular, the connecting portion 32 is inserted into the connecting hole 16 in the center of the transmission gear 11, and the connecting hole 16 is positioned circumferentially with the connecting portion 32.
[0032] As shown in Figure 3 and Figure 6 , the one-way clutch assembly 4 includes a clutch cylinder 41 arranged at the lower end of the output gear 12, the clutch cylinder 41 is arranged on the circumferential periphery of the driving clutch 3 and corresponds to the magnetic disc 13, and the clutch cylinder 41 has two corresponding grooves 42 on the inner side, and the clutch cylinder 41 has a convex boss 43 arranged at the lower end of the output gear 12, and the convex boss 43 has a positioning column 44 inserted into the positioning hole 33 in the center of the driving clutch 3. The one-way clutch assembly 4 helps to realize the stable one-way opening and closing of the curtain. When the electric curtain is running normally, the one-way clutch assembly 4 ensures that the power can be effectively transmitted to the curtain, and in the case of power failure, the one-way clutch assembly 4 can separate the transmission of the motor and the curtain track, facilitate the user to open and close the curtain manually, and at the same time can prevent the motor from reversing when the curtain is accidentally stressed, avoid the damage of the motor and the internal parts of the reduction gearbox 1 due to overload or reverse stress, and prolong the service life of the motor and the reduction gearbox 1.
[0033] The clutch cylinder 41 is coaxially arranged with the output gear 12 and is integrally connected, and the lower end of the clutch cylinder 41 is not in contact with the upper end of the noise reduction gasket 5.
[0034] The principle of the embodiment is:
[0035] Magnetic disk 13 is installed in the ring positioning ring 14 of the reduction gearbox 1, the noise reduction gasket 5 is arranged above the ring positioning ring 14, the ring positioning 14 is arranged in the gasket positioning ring 51 of the noise reduction gasket 5, the lower end of the gasket positioning ring 51 is not in contact with the reduction gearbox 1, and the gasket positioning part 52 is fixed with the box extension part 15, the connecting part 32 of the clutch 2 passes through the noise reduction gasket 5, the magnetic disk 13 and the reduction gearbox 1 in turn, and the connecting part 32 is connected with the connecting hole 16 of the transmission gear 11, and the driving clutch 3 is not in contact with the noise reduction gasket 5, then the driving clutch 3 is arranged in the clutch cylinder 41 of the output gear 12, and the positioning column 44 is arranged in the positioning hole 33, the structure design of the device can avoid the direct contact and friction between the driving clutch 3 and the magnetic disk 13, thereby improving the noise effect.
[0036] The specific embodiments described herein merely exemplify the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.
[0037] Although the terms such as reduction gearbox 1, transmission gear 11, output gear 12, magnetic disk 13, ring positioning ring 14, box extension part 15, connecting hole 16, clutch 2, driving clutch 3, clutch shaft 31, connecting part 32, positioning hole 33, one-way clutch assembly 4, clutch cylinder 41, groove 42, boss 43, positioning column 44, noise reduction gasket 5, gasket positioning ring 51, gasket positioning part 52 and the like are used more frequently herein, but the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any interpretation of them as any kind of additional limitation is contrary to the spirit of the present application.
Claims
1. A clutch noise reduction structure of a window curtain reduction gearbox, comprising a transmission gear (11) rotatably arranged in a reduction gearbox body (1), an output gear (12) arranged on the outer side of the upper end of the reduction gearbox body (1), and the transmission gear (11) and the output gear (12) being connected through a clutch (2), characterized in that, The clutch (2) has a driving clutch (3) arranged on the outer side of the upper end of the reduction gearbox (1) and connected with the transmission gear (11), the driving clutch (3) is connected with the output gear (12) through the one-way clutch assembly (4), the magnetic disc (13) is arranged below the driving clutch (3) and corresponds to the one-way clutch assembly (4) on the upper end of the reduction gearbox (1), and the noise reduction gasket (5) is arranged between the driving clutch (3) and the magnetic disc (13).
2. The clutch noise reduction structure of a window shade reduction box according to claim 1, characterized by, The upper end surface of the reduction gearbox (1) has an annular positioning ring (14), the magnetic disc (13) is arranged in the annular positioning ring (14), and the upper end of the magnetic disc (13) does not exceed the annular positioning ring (14).
3. The clutch noise reduction structure of a window shade reduction box according to claim 2, characterized by, The annular positioning ring (14) is integrally formed on the upper end of the reduction gearbox (1), and the upper end of the magnetic disc (13) is flush with the upper end of the annular positioning ring (14).
4. The clutch noise reduction structure of a window shade reduction box according to claim 1 or 2 or 3, characterized in that, The noise reduction gasket (5) is made of plastic material, the lower end of the noise reduction gasket (5) has a gasket positioning ring (51), the gasket positioning ring (51) is arranged on the outer side of the annular positioning ring (14) in a sleeved manner, and the upper end surface of the magnetic disc (13) is in contact with the lower end surface of the noise reduction gasket (5).
5. The clutch noise reduction structure of a window shade reduction box according to claim 4, characterized by The upper end surface of the noise reduction gasket (5) is not in contact with the driving clutch (3), the gasket positioning ring (51) is integrally formed on the lower end of the noise reduction gasket (5), the height of the gasket positioning ring (51) is less than the height of the annular positioning ring (14), and the lower end of the gasket positioning ring (51) is not in contact with the upper end of the reduction gearbox (1).
6. The clutch noise reduction structure of a window shade reduction box according to claim 1, characterized by The upper end of the reduction gearbox (1) has a gearbox extension (15) extending upward, and one end of the noise reduction gasket (5) has a gasket positioning portion (52) extending to one side of the gearbox extension (15) and matching the shape of the gearbox extension (15).
7. The clutch noise reduction structure of a window shade reduction box according to claim 1, characterized by The driving clutch (3) is in the form of a cam, the lower end of the driving clutch (3) is connected with the clutch shaft (31) penetrating into the reduction gearbox (1), the clutch shaft (31) penetrates the noise reduction gasket (5), the magnetic disc (13) and the upper end of the reduction gearbox (1) in sequence, and the clutch shaft (31) is rotatably arranged with the noise reduction gasket (5), the magnetic disc (13) and the reduction gearbox (1).
8. The clutch noise reduction structure of a window shade reduction box according to claim 7, characterized by The lower end of the clutch shaft (31) has a connecting portion (32), the cross section of the connecting portion (32) is non-circular, the connecting portion (32) is inserted into the connecting hole (16) in the center of the transmission gear (11), and the connecting hole (16) is positioned in the circumferential direction of the connecting portion (32).
9. The clutch noise reduction structure of a window shade reduction box according to claim 1, characterized by, The one-way clutch assembly (4) comprises a clutch cylinder (41) arranged at the lower end of the output gear (12), the clutch cylinder (41) covers the circumferential periphery of the driving clutch (3) and corresponds to the magnetic disc (13), two corresponding grooves (42) are arranged at the circumferential inner side of the clutch cylinder (41), a rolling body is arranged in the clutch cylinder (41) and is attracted to the magnetic disc (13), a boss (43) is arranged at the center of the clutch cylinder (41) and is arranged at the lower end of the output gear (12), the boss (43) is provided with a positioning column (44) inserted into the positioning hole (33) at the center of the driving clutch (3).
10. The clutch noise reduction structure of a window shade reduction box according to claim 9, wherein The clutch cylinder (41) is coaxially arranged with the output gear (12) and is integrated, and the lower end of the clutch cylinder (41) is not in contact with the upper end of the noise reduction gasket (5).