Blade transmission assembly

Abstract

The utility model relates to the technical field of shutter driving, in particular to a blade transmission component, which comprises a transmission box, a driving bevel gear, a driven bevel gear, a rotating shaft and a speed reducer are mounted in the transmission box, the driving bevel gear is meshed with the driven bevel gear, and the rotating shaft is meshed with the speed reducer. The rotating shaft is connected between the driven bevel gear and the speed reducer, a first bearing and a second bearing are arranged between the driving bevel gear and the transmission box, and the second bearing is located in the first bearing. The blind window has the effect of improving the adaptability of the blind window.

Description

Technical Field

[0001] The utility model relates to the technical field of shutter driving, in particular to a blade transmission component. Background Art

[0002] Shutters are one of the many window styles, generally made of wood, glass or aluminum alloy. They can not only block sunlight and protect the room from dust, but also block ultraviolet rays, protect privacy and are easy to clean. There are many types of shutters on the market.

[0003] The Chinese patent with the announcement number CN218971081U discloses a blade transmission assembly and a blade drive device used therein, which includes an installation box, a fixed box is arranged inside the installation box, a transmission shaft is rotatably connected inside the fixed box, one end of the transmission shaft is connected to the external drive assembly, and the other end is used to drive the blades of the blinds to retract and unwind, and a friction block is also arranged inside the fixed box, the friction block is connected to the fixed box, and the friction block abuts against the outer peripheral wall of the transmission shaft. The friction block abuts against the outer peripheral wall of the transmission shaft to increase the friction force that needs to be overcome to drive the transmission shaft to rotate. The present application has the effect of stably locking the blades.

[0004] With respect to the above-mentioned related technologies, in the prior art, the larger bevel gear in the external drive assembly is rotatably mounted with the front mounting shell via two types of bearings, the action directions of the two bearings are perpendicular to each other, and in order to ensure the stable rotation of the bevel gear, the size of the bearing is proportional to the size of the bevel gear. However, in the prior art, the two bearings are mounted in a stacked manner on the rotating shaft of the larger bevel gear, resulting in the entire mounting box being designed to be a shell having a thickness that is adapted to the stacking of the two bearings, which increases the thickness of the entire blinds. Due to the uniform setting of the motor specifications, most blinds on the market are divided into two types, namely, the rope-type blinds and the reel-type blinds. Venetian blinds and magnetic blinds, the thickness of the cord-type blinds is 23mm, and the thickness of the magnetic blinds is 19mm. However, due to the load limit of the magnetic block, the magnetic blinds cannot withstand large blinds loads. There are many styles of large glass window installation slots for construction, including 19mm and 23mm. In order to facilitate unified procurement and installation, blinds of the same style are generally purchased. Due to the limitations of the magnetic blinds themselves, they cannot adapt to large glass windows, but the cord-type blinds cannot adapt to the 19mm glass window installation slots due to their own size limitations, which reduces the adaptability of the blinds. Utility Model Content

[0005] In order to improve the adaptability of the shutters, the present application provides a blade transmission assembly.

[0006] The present application provides a blade transmission assembly adopting the following technical solution:

[0007] A blade transmission assembly includes a transmission box, in which a driving bevel gear, a driven bevel gear, a rotating shaft and a reducer are installed, the driving bevel gear is meshed with the driven bevel gear, the rotating shaft is connected between the driven bevel gear and the reducer, a first bearing and a second bearing are arranged between the driving bevel gear and the transmission box, and the second bearing is located inside the first bearing.

[0008] By adopting the above technical solution, during transmission, the staff rotates the active bevel gear to rotate the driven bevel gear, driving the rotating shaft to rotate, and through the reducer, the speed of the output end of the reducer is reduced, achieving the effect of reduction transmission. The staff installs the second bearing in the first bearing so that the installation space of the first bearing overlaps with the second bearing. This arrangement can further reduce the thickness of the transmission box and the thickness of the blinds, so that the blinds can adapt to the installation requirements of multiple sizes of glass window installation slots in construction buildings, thereby improving the adaptability of the blinds.

[0009] Optionally, the transmission box includes a front transmission case and a rear transmission case, the first bearing and the second bearing are arranged between the front transmission case and the active bevel gear, the front transmission case is connected to a plurality of positioning columns, the rear transmission case is provided with positioning holes at positions corresponding to the positioning columns, the positioning columns are plugged into the positioning holes, and the rear transmission case is provided with a locking member for locking the front transmission case.

[0010] By adopting the above technical solution, when assembling the transmission box, the staff inserts the positioning column into the positioning hole, and then uses the locking piece to lock the front transmission housing, thereby realizing the assembly of the transmission box.

[0011] Optionally, the locking member is a self-tapping bolt, the locking member passes through the rear transmission case and is threadably matched with the front transmission case, and the locking member is pressed against the rear transmission case.

[0012] By adopting the above technical solution, when locking the front transmission case, the staff rotates the self-tapping bolt so that the self-tapping bolt matches the thread of the front transmission case and presses against the rear transmission case, thereby achieving the effect of locking the front transmission case. The self-tapping bolt is used to lock the front transmission case, and the operation steps are simple and the locking effect is strong.

[0013] Optionally, the locking member is a snap-fit ​​claw, and a plurality of the locking members are connected to the rear transmission housing. The locking member is made of a deformable material, and a snap-fit ​​groove is formed at a position of the front transmission housing corresponding to the locking member, and the locking member is snap-fitted into the snap-fit ​​groove.

[0014] By adopting the above technical solution, when locking the front transmission housing, the staff will make the front transmission housing contact the engaging claw, causing the engaging claw to deform until the front transmission housing contacts the rear transmission housing, and the engaging claw returns to its original state and is engaged in the engaging groove, thereby limiting the freedom of movement of the front transmission housing and achieving the effect of locking the front transmission housing.

[0015] Optionally, a tightening groove is formed on the front transmission shell, a friction block is arranged in the front transmission shell, a tightening arc groove is formed on one end of the friction block corresponding to the rotating shaft, the tightening arc groove fits the surface of the rotating shaft, a connecting column is connected to the friction block, a tightening spring is sleeved on the connecting column, the connecting column is located in the tightening groove, and the tightening spring is located between the friction block and the bottom wall of the tightening groove.

[0016] By adopting the above technical solution, the purpose of the entire transmission assembly is to drive the rotating shaft in the blinds to recycle the pull rope and stack the blinds. However, the blinds have weight, and when the blinds are retracted, the rotating shaft will bear the load of the entire blinds, causing the load to be transferred to the rotating shaft. The rotating shaft may rotate in the opposite direction, causing the blinds to fall. The staff uses the force of the tightening spring to push the friction block, so that the friction block presses against the rotating shaft, thereby generating friction that hinders the rotation of the rotating shaft, reducing the possibility of the rotating shaft rotating in the opposite direction, and achieving the effect of self-locking blinds.

[0017] Optionally, the reducer includes a fixed shell, a fixed cover, an input end shaft, a reduction gear group and an output end shaft, the fixed shell is installed in the transmission box at one end away from the active bevel gear, the fixed cover is installed on the fixed shell, the reduction gear group is installed in the fixed shell, the input end shaft is installed at one end of the reduction gear group, the input end shaft is connected to the rotating shaft, the output end shaft is installed at the other end of the reduction gear group, and a transmission groove is opened at one end of the output end shaft away from the reduction gear group.

[0018] By adopting the above technical solution, the staff uses the rotating shaft to connect with the input end shaft to drive the input end shaft to rotate, and obtains the reduced output end shaft through the cooperation of the reduction gear set and the output end shaft. The rotating shaft in the blinds is driven to rotate through the transmission groove to move the blades, thereby achieving the effect of reducing the speed of the rotating shaft in the blinds.

[0019] Optionally, a plurality of mounting blocks are connected to the fixing cover, and mounting grooves are formed in the fixing shell at positions corresponding to the mounting blocks, and the mounting blocks are plugged into the mounting grooves.

[0020] By adopting the above technical solution, the staff completed the assembly of the fixed cover by plugging the mounting block into the mounting groove. The structure is simple and the assembly is quick, which improves the loading and unloading efficiency of the reducer.

[0021] Optionally, a plurality of limiting strips are connected to the surface of the fixed shell, a placement groove is opened at the position of the transmission box corresponding to the fixed shell, a limiting groove is opened in the placement groove, the fixed shell and the fixed cover are installed in the placement groove, and the limiting strips are plugged into and fitted in the limiting groove.

[0022] By adopting the above technical solution, when assembling the mounting shell, the staff uses the plug-in cooperation between the limiting strip and the limiting groove to limit the rotation of the mounting shell, so that the reduction gear set can stably rotate in the mounting shell.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. During transmission, the staff rotates the active bevel gear to rotate the driven bevel gear, which drives the rotating shaft to rotate. Through the reducer, the speed of the output end of the reducer is reduced, achieving the effect of reduction transmission. The staff installs the second bearing in the first bearing so that the installation space of the first bearing overlaps with the second bearing. This setting can further reduce the thickness of the transmission box and the thickness of the blinds, so that the blinds can adapt to the installation requirements of multiple sizes of glass window installation slots in construction buildings, thereby improving the adaptability of the blinds. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the blade transmission assembly in Example 1 of the present application.

[0026] Figure 2 It is an exploded diagram used to illustrate the structure of the blade transmission assembly in Example 1 of the present application.

[0027] Figure 3 It is a schematic diagram of the structure inside the transmission box in Example 1 of the present application.

[0028] Figure 4 It is a cross-sectional view used to reflect the internal structure of the transmission box in Example 1 of the present application.

[0029] Figure 5 It is an exploded diagram used to illustrate the reducer structure in Example 1 of the present application.

[0030] Figure 6 It is a schematic diagram of the structure inside the rear transmission housing in Example 1 of the present application.

[0031] Figure 7 It is a schematic diagram of the structure of the locking member in Example 2 of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Transmission box; 11. Front transmission housing; 111. Positioning column; 112. Abutment groove; 113. Clamping groove; 12. Rear transmission housing; 2. Locking piece; 3. Active bevel gear; 31. First bearing; 32. Second bearing; 4. Driven bevel gear; 41. Rotating shaft; 5. Friction block; 51. Abutment arc groove; 52. Connecting column; 53. Abutment spring; 6. Reducer; 61. Fixed housing; 611. Limiting strip; 62. Fixed cover; 621. Mounting block; 63. Input end shaft; 64. Reduction gear set; 65. Output end shaft; 7. Placement groove; 71. Limiting groove. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 This application is described in further detail.

[0034] Embodiment 1 of the present application discloses a blade transmission assembly. Figure 1 and Figure 2 The blade transmission assembly includes a transmission box 1, and the transmission box 1 includes a front transmission shell 11 and a rear transmission shell 12. A plurality of positioning posts 111 are fixedly connected to the front transmission shell 11, and four are used as an example in this embodiment. Positioning holes are opened at the positions of the rear transmission shell 12 corresponding to the positioning posts 111, and the positioning posts 111 are plugged into the positioning holes. A plurality of locking members 2 are provided on the rear transmission shell 12, and the locking members 2 are self-tapping bolts. Six are used as an example in this embodiment. The locking members 2 pass through the rear transmission shell 12 and are threadedly matched with the front transmission shell 11, and the locking members 2 are pressed against the rear transmission shell 12.

[0035] Reference Figure 2 , Figure 3 and Figure 4 A driving bevel gear 3 and a driven bevel gear 4 are arranged between the front transmission housing 11 and the rear transmission housing 12, a first bearing 31 is installed between the driving bevel gear 3 and the front transmission housing 11, a second bearing 32 is installed between the driving bevel gear 3 and the front transmission housing 11 and between the driving bevel gear 3 and the rear transmission housing 12, and the second bearing 32 installed in the front transmission housing 11 is located in the first bearing 31. A rotating shaft 41 is connected between the front transmission housing 11 and the rear transmission housing 12 through a bearing, and the driven bevel gear 4 is fixedly connected to one end of the rotating shaft 41 close to the driving bevel gear 3, and the driving bevel gear 3 is meshed with the driven bevel gear 4.

[0036] Reference Figure 3 and Figure 4, a tightening groove 112 is formed on the front transmission housing 11, a friction block 5 is arranged inside the front transmission housing 11, and an end of the friction block 5 close to the rotating shaft 41 is formed with an tightening arc groove 51, and the tightening arc groove 51 fits the surface of the rotating shaft 41. A connecting column 52 is fixedly connected to the other end of the friction block 5, and the connecting column 52 is located in the tightening groove 112. A tightening spring 53 is sleeved on the connecting column 52, and the tightening spring 53 is located between the bottom wall of the tightening groove 112 and the friction block 5. The staff uses the friction block 5 to tighten the rotating shaft 41, which reduces the possibility of the rotating shaft 41 rotating in the opposite direction, and realizes the self-locking effect of the shutter.

[0037] Reference Figure 4 , Figure 5 and Figure 6 A reducer 6 is arranged between the front transmission housing 11 and the rear transmission housing 12 at the other end close to the rotating shaft 41. The reducer 6 includes a fixed housing 61, a fixed cover 62, an input end shaft 63, a reduction gear set 64 and an output end shaft 65. A placement groove 7 is provided on the front transmission housing 11 and the rear transmission housing 12. A limiting groove 71 is provided in the placement groove 7. The fixed housing 61 is installed in the placement groove 7. A limiting bar 611 is fixedly connected to the fixed housing 61 at a position corresponding to the limiting groove 71. The limiting bar 611 is plugged into the limiting groove 71. The reduction gear set 64 is installed between the input end shaft 63 and the output end shaft 65. The input end shaft 63, the reduction gear set 64 and the output end shaft 65 are all installed in the fixed housing 61. A transmission groove is provided at one end of the output end shaft 65 away from the reduction gear set 64. The transmission groove is used to transmit the rotating shaft in the blinds to drive the blades to move. A plurality of mounting blocks 621 are fixedly connected to the fixed cover 62. In this embodiment, four mounting blocks 621 are used as an example. The four mounting blocks 621 are evenly distributed around the axis of the fixed cover 62. A mounting groove is provided at the position of the fixed shell 61 corresponding to the mounting block 621. The mounting block 621 is plugged into the mounting groove. The input end shaft 63 passes through the fixed cover 62 and is fixedly connected to the other end of the rotating shaft 41.

[0038] During transmission, the staff rotates the active bevel gear 3 to rotate the driven bevel gear 4, driving the rotating shaft 41 to rotate. Through the cooperation of the input end cover, the reduction gear set 64 and the output end cover, the rotating shaft in the shutter is driven to reduce rotation, achieving the effect of reduction transmission.

[0039] The implementation principle of a blade transmission assembly in Example 1 of the present application is as follows: when installing the transmission box 1, the staff fixes the input end shaft 63 to the other end of the rotating shaft 41, and then installs the driven bevel gear 4, the rotating shaft 41 and the reduction box on the front transmission housing 11, and then installs the active bevel gear 3 to make the active bevel gear 3 mesh with the driven bevel gear 4, and then covers the front transmission housing 11 with the rear transmission housing 12 to make the positioning column 111 plug-fit into the positioning hole, and then rotates the locking piece 2 to make the locking piece 2 press against the rear transmission housing 12 and cooperate with the front transmission housing 11 thread, thereby realizing the installation of the transmission box 1.

[0040] The staff installs the second bearing 32 in the first bearing 31 so that the installation space of the first bearing 31 overlaps with the installation space of the second bearing 32. This arrangement can further reduce the thickness of the transmission box 1 and the thickness of the shutters, so that the shutters can adapt to the installation requirements of multiple sizes of glass window installation grooves in construction buildings, thereby improving the adaptability of the shutters.

[0041] Embodiment 2: The difference between this embodiment and embodiment 1 is that the structure of the locking member 2 is different.

[0042] Reference Figure 7 A plurality of locking members 2 are fixedly connected to the rear transmission housing 12. Four are used as an example in this embodiment. The locking members 2 are clamping claws. The locking members 2 are made of a deformable material, such as plastic. A clamping groove 113 is formed at a position of the front transmission housing 11 corresponding to the locking member 2. The locking member 2 is clamped and matched in the clamping groove 113.

[0043] When locking the front transmission housing 11, the staff will make the front transmission housing 11 resist the engaging claw, causing the engaging claw to deform until the front transmission housing 11 resists the rear transmission housing 12, and the engaging claw returns to its original state and is engaged in the engaging groove 113, thereby limiting the freedom of movement of the front transmission housing 11 and achieving the effect of locking the front transmission housing 11.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A blade transmission assembly, characterized in that: The invention comprises a transmission box (1), wherein a driving bevel gear (3), a driven bevel gear (4), a rotating shaft (41) and a reducer (6) are installed in the transmission box (1), wherein the driving bevel gear (3) is meshed with the driven bevel gear (4), the rotating shaft (41) is connected between the driven bevel gear (4) and the reducer (6), and a first bearing (31) and a second bearing (32) are arranged between the driving bevel gear (3) and the transmission box (1), and the second bearing (32) is located in the first bearing (31).

2. The blade transmission assembly according to claim 1, characterized in that: The transmission box (1) comprises a front transmission housing (11) and a rear transmission housing (12); the first bearing (31) and the second bearing (32) are arranged between the front transmission housing (11) and the active bevel gear (3); the front transmission housing (11) is connected with a plurality of positioning columns (111); the rear transmission housing (12) is provided with positioning holes at positions corresponding to the positioning columns (111); the positioning columns (111) are plugged into the positioning holes; and the rear transmission housing (12) is provided with a locking member (2) for locking the front transmission housing (11).

3. The blade transmission assembly according to claim 2, characterized in that: The locking piece (2) is a self-tapping bolt, passes through the rear transmission housing (12), and is threadably matched with the front transmission housing (11), and the locking piece (2) is pressed against the rear transmission housing (12).

4. The blade transmission assembly according to claim 2, characterized in that: The locking piece (2) is a clamping claw. A plurality of the locking pieces (2) are connected to the rear transmission housing (12). The locking piece (2) is made of a deformable material. A clamping groove (113) is formed at a position of the front transmission housing (11) corresponding to the locking piece (2). The locking piece (2) is clamped and fitted in the clamping groove (113).

5. The blade transmission assembly according to claim 2, characterized in that: The front transmission housing (11) is provided with a tightening groove (112), a friction block (5) is arranged inside the front transmission housing (11), an end of the friction block (5) corresponding to the rotating shaft (41) is provided with a tightening arc groove (51), the tightening arc groove (51) is in contact with the surface of the rotating shaft (41), a connecting column (52) is connected to the friction block (5), a tightening spring (53) is sleeved on the connecting column (52), the connecting column (52) is located in the tightening groove (112), and the tightening spring (53) is located between the friction block (5) and the bottom wall of the tightening groove (112).

6. The blade transmission assembly according to claim 1, characterized in that: The reducer (6) comprises a fixed housing (61), a fixed cover (62), an input end shaft (63), a reduction gear set (64) and an output end shaft (65); the fixed housing (61) is mounted at one end of the transmission box (1) away from the active bevel gear (3); the fixed cover (62) is mounted on the fixed housing (61); the reduction gear set (64) is mounted in the fixed housing (61); the input end shaft (63) is mounted at one end of the reduction gear set (64); the input end shaft (63) is connected to the rotating shaft (41); the output end shaft (65) is mounted at the other end of the reduction gear set (64); and a transmission groove is formed at one end of the output end shaft (65) away from the reduction gear set (64).

7. The blade transmission assembly according to claim 6, characterized in that: A plurality of mounting blocks (621) are connected to the fixing cover (62), and mounting grooves are formed at positions of the fixing shell (61) corresponding to the mounting blocks (621), and the mounting blocks (621) are plugged into and fitted in the mounting grooves.

8. The blade transmission assembly according to claim 6, characterized in that: A plurality of limiting strips (611) are connected to the surface of the fixed shell (61); a placement groove (7) is provided at a position of the transmission box (1) corresponding to the fixed shell (61); a limiting groove (71) is provided in the placement groove (7); the fixed shell (61) and the fixed cover (62) are installed in the placement groove (7); and the limiting strips (611) are plugged into and fitted in the limiting groove (71).

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