Roller shutter driving apparatus

Abstract

Embodiments of the present application provide a roller shutter driving apparatus, comprising a shaft rod coaxially arranged with a winding drum, a driver arranged in the winding drum, and a transmission mechanism arranged between an output shaft and the shaft rod. The driver comprises a base and a rotary power member; a preset non-zero included angle is formed between the central axes of the output shaft of the rotary power member and the shaft rod; the transmission mechanism comprises a guide rod fixed relative to the base, a guide sleeve slidably sleeved on the guide rod, and two connector modules respectively connected to the guide sleeve; the guide sleeve comprises a main sleeve and two sliding rods symmetrically protruding outwards from two opposite sides of the main sleeve; each connector module comprises a sliding sleeve slidably sleeved on one corresponding sliding rod and an adapter rod having one end pivotally connected to the sliding sleeve; the other end of one of and the other end of the other of the two adapter rods respectively belonging to the two connector modules are respectively fixed at the tail end of the output shaft and the tail end of the shaft rod in a one-to-one correspondence manner, and the ends of the adapter rods pivotally connected to the sliding sleeves respectively deviate from the central axes of the output shaft and the shaft rod. The present embodiment can effectively reduce the occupied volume.

Description

Roller shutter drive Technical Field

[0001] The embodiments of the present application relate to the technical field of curtain accessories, and in particular to a roller blind drive device. Background Art

[0002] The winding drum of an existing roller blind is mounted on corresponding support frames at both ends. A roller blind drive device assembled inside the winding drum drives the winding drum to retract and unreel the blind fabric. The existing roller blind drive device primarily comprises a driver disposed within the winding drum, a shaft fixed to a support frame outside one end of the winding drum and inserted into the winding drum, and a transmission mechanism for transmitting power between the driver and the shaft. The driver further comprises a drive housing fixed relative to the winding drum and a rotating power element disposed within the drive housing.

[0003] However, during the specific implementation, the inventors found that the output shaft and the shaft rod of the rotating power part inside the traditional roller shutter drive device are usually arranged in parallel, resulting in a relatively complex structure of the transmission mechanism and a relatively large overall volume of the drive device, which is not conducive to the miniaturization design of the roller shutter. Technical issues

[0004] The technical problem to be solved by the embodiments of the present application is to provide a roller shutter driving device that can effectively reduce the occupied volume. Solution

[0005] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions: a roller blind drive device, comprising a support frame fixed to the outer side of one end of the winding drum of the roller blind, an axis rod inserted into the winding drum and arranged coaxially with the winding drum, and a driver arranged in the winding drum for driving the winding drum to rotate around the axis rod, the driver comprising a base fixed relative to the winding drum in the circumferential direction and a rotating power member fixed on the base, the output shaft of the rotating power member and the central axis of the axis rod having a predetermined non-zero angle, the roller blind drive device also comprising a transmission arranged between the output shaft and the axis rod. The transmission mechanism includes a guide rod fixed relatively to the base, a guide sleeve slidingly sleeved on the guide rod and two joint modules respectively connected to the guide sleeve, the guide sleeve including a main sleeve and two sliding rods symmetrically protruding outward from opposite sides of the main sleeve, each of the joint modules including a sliding sleeve sliding sleeve on a corresponding one of the sliding rods and a transfer rod pivotally connected to the sliding sleeve at one end, the other ends of the two transfer rods belonging to the two joint modules are respectively fixed to the end of the output shaft and the end of the shaft rod in a one-to-one correspondence, and the ends pivotally connected to the sliding sleeve deviate from the central axis of the output shaft and the shaft rod.

[0006] Furthermore, a U-shaped fork frame is formed at one end of the transfer rod, and circular shafts that are coaxial with each other and axially perpendicular to the center hole of the sleeve protrude from the opposite side walls of the sleeve. The sleeve is placed in the fork frame and inserted into the corresponding pivot holes on the two opposite fork arms of the fork frame through the circular shaft.

[0007] Furthermore, the central axes of the output shaft of the rotating power member and the shaft are perpendicular to each other.

[0008] Furthermore, the shaft rod includes an inner shaft and an outer shaft that are coaxially fixedly connected. The inner shaft is located as a whole in the winding drum and has a socket for inserting a corresponding transfer rod on the side surface at one end away from the outer shaft. The end of the outer shaft away from the inner shaft extends out of the winding drum and is fixed on the support frame.

[0009] Furthermore, the rotating power component also includes a winding core shaft and a transmission shaft pivotally arranged parallel to each other on the base, and a planar spiral spring wound on the winding core shaft and with the outer end fixed to the transmission shaft. The transmission shaft and the output shaft are connected by means of a gear pair.

[0010] Furthermore, the gear pair includes a driving gear fixed coaxially with the transmission shaft, a driven gear fixed coaxially with the output shaft, and a transition gear pivotally mounted on the base and meshing with the driving gear and the driven gear on both sides.

[0011] Furthermore, the winding core shaft and the transition gear are coaxially arranged and can be rotatably sleeved on a pivot shaft, and the base is provided with corresponding shaft holes for inserting opposite ends of the pivot shaft.

[0012] Furthermore, the roller shutter drive device also includes a protective shell that correspondingly covers the guide rod, the guide sleeve, the joint module, the output shaft and the driven gear, and the gear surfaces of the shaft rod and the transition gear respectively extend into the protective shell from preset through-holes on the shell walls on opposite sides of the protective shell, the output shaft is pivoted on the protective shell, and the opposite ends of the guide rod are respectively inserted and fixed in the corresponding positioning holes on the inner walls on opposite sides of the protective shell.

[0013] Furthermore, the protective shell is formed by a first half shell and a second half shell that are interlocked with each other. The first half shell is adjacent to the end of the outer shaft and is also integrally formed with a support sleeve. The outer shaft is correspondingly inserted into the support sleeve, and the inner shaft is also assembled on a correspondingly formed bearing seat in the protective shell with the help of a bearing.

[0014] Furthermore, the base is a drive shell that covers the winding core shaft, transmission shaft, flat spiral spring, driving gear and transition gear. The drive shell is connected to and fixedly connected to the protective shell, and a through hole is provided on the shell wall at one end of the drive shell for the gear surface of the transition gear to extend out. Beneficial effects

[0015] After adopting the above technical solution, the embodiment of the present application has at least the following beneficial effects: the embodiment of the present application is beneficial to reducing the occupied volume of the drive device by setting the central axes of the output shaft of the rotating power part and the shaft rod to be perpendicular to each other and have a predetermined non-zero spacing, and further adding a transmission mechanism, the specific transmission mechanism includes a guide rod, a guide sleeve and two joint modules, wherein the guide sleeve includes a main sleeve and two sliding rods, and each joint module includes a sliding sleeve and a transfer rod. When one of the joint modules rotates under the drive of the output shaft, the sliding sleeve is pivotally connected to the transfer rod, and The transfer rods of the two joint modules are fixedly connected to the output shaft and the shaft rod of the rotating power part respectively. Since the sliding sleeve is mounted on the sliding rod, and one end of the sliding rod is connected to the main sleeve mounted on the guide rod, the sliding sleeve makes a circular motion while driving the sliding rod and the guide sleeve to reciprocate along the axial direction of the guide rod; synchronously, the other joint module rotates around its own central axis under the drive of the guide sleeve, thereby driving the winding drum to rotate around the shaft rod, thereby utilizing the transmission mechanism to realize the power transmission between the output shaft and the shaft rod. The overall structure is more compact, which can effectively reduce the volume occupied by the drive device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic structural diagram of a roller shutter driving device in a disassembled state according to an optional embodiment of the present application.

[0017] FIG2 is a schematic diagram showing a further disassembled structure of the transmission mechanism of an optional embodiment of the roller shutter driving device of the present application.

[0018] FIG3 is a schematic diagram of the assembly structure of an optional embodiment of the roller shutter driving device of the present application.

[0019] FIG4 is a schematic cross-sectional view of a transmission mechanism of an optional embodiment of the roller shutter driving device of the present application.

[0020] FIG5 is a schematic cross-sectional view of a driver of an optional embodiment of the roller shutter driving device of the present application.

[0021] FIG6 is a schematic diagram of the disassembled structure of a driver of an optional embodiment of the roller shutter driving device of the present application.

[0022] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following exemplary embodiments and descriptions are only used to explain the present application and are not intended to limit the present application. Moreover, the embodiments and features in the embodiments of the present application may be combined with each other unless there is a conflict.

[0023] As shown in Figures 1 to 4, an embodiment of the present application provides a roller blind drive device, including a support frame 2 fixed to the outside of one end of the winding drum 1 of the roller blind and inserted into the winding drum 1 and coaxially arranged with the winding drum 1, and a driver 4 provided in the winding drum 1 for driving the winding drum 1 to rotate around the shaft 3, the driver 4 includes a base 40 fixed relative to the winding drum 1 in the circumferential direction and a rotating power member 42 fixed on the base 40, the output shaft 421 of the rotating power member 42 and the central axis of the shaft 3 have a predetermined non-zero angle, the roller blind drive device also includes a transmission mechanism 5 provided between the output shaft 421 and the shaft 3, the transmission mechanism 5 ... base The seat 40 comprises a guide rod 50 fixed relative to the seat, a guide sleeve 52 slidingly sleeved on the guide rod 50, and two joint modules 54 respectively connected to the guide sleeve 52, the guide sleeve 52 comprises a main sleeve 521 and two sliding rods 523 symmetrically protruding outward from opposite sides of the main sleeve 521, each of the joint modules 54 comprises a sliding sleeve 541 slidingly sleeved on a corresponding sliding rod 523 and a transfer rod 543 pivotally connected to the sliding sleeve 541 at one end, the other ends of the two transfer rods 543 belonging to the two joint modules 54 are respectively fixed to the end of the output shaft 421 and the end of the shaft rod 3 in a one-to-one correspondence, and the ends pivotally connected to the sliding sleeve 541 deviate from the central axis of the output shaft 421 and the shaft rod 3.

[0024] In the embodiment of the present application, the output shaft 421 of the rotating power member 42 and the central axis of the shaft 3 are set to have a predetermined non-zero angle, which is conducive to reducing the occupied volume of the drive device, and further adding a transmission mechanism 5. The specific transmission mechanism 5 includes a guide rod 50, a guide sleeve 52 and two joint modules 54, wherein the guide sleeve 52 includes a main sleeve 521 and two slide rods 523, and each joint module 54 includes a sleeve sleeve 541 and a transfer rod 543. When one of the joint modules 54 is driven by the output shaft 421 to rotate, due to the sleeve 541 and the transfer rod 54, the sleeve 541 and the transfer rod 543 are connected. 3, and the transfer rods 543 of the two joint modules 54 are fixedly connected to the output shaft 421 of the rotating power member 42 and the shaft 3, respectively. As the sliding sleeve 541 moves in a circular motion, it also drives the sliding rod 521 and the guide sleeve 52 to reciprocate along the axial direction of the guide rod 50. Simultaneously, the circumscribed shaft 545 of the other joint module 54, driven by the guide sleeve 52, rotates about its own central axis, thereby driving the winding drum 2 to rotate about the shaft 3. This transmission mechanism 5 enables power transmission between the output shaft 421 and the shaft 3, making the overall structure more compact and effectively reducing the volume occupied by the drive device. In specific implementations, the two sliding rods 523 can preferably be designed to be perpendicular to each other.

[0025] In an optional embodiment of the present application, as shown in Figures 1 and 2, a U-shaped fork bracket 543a is formed at one end of the transfer rod 543. Circular shafts 541a protrude from opposite side walls of the sleeve 541, each coaxial with the other and perpendicular to the axis of the central hole of the sleeve 541. The sleeve 541 is positioned within the fork bracket 543a and inserted through the circular shafts 541a into corresponding pivot holes 543c formed on two opposing fork arms 543b of the fork bracket 543a. In this embodiment, the circular shafts 541a on either side of the sleeve 541 are correspondingly inserted into the pivot holes 543c of the two fork arms 543b of the fork bracket 543a, effectively achieving a pivotal connection between the sleeve 541 and the fork bracket 543a, making assembly relatively convenient.

[0026] In an optional embodiment of the present application, the central axes of the output shaft 421 of the rotating power member 42 and the shaft 3 are perpendicular to each other. In this embodiment, by making the central axes of the output shaft 421 and the shaft 3 perpendicular to each other, the occupied volume of the entire device can be minimized.

[0027] In an optional embodiment of the present application, as shown in Figures 1, 2 and 4, the shaft 3 includes an inner shaft 30 and an outer shaft 32 that are coaxially fixedly connected. The inner shaft 30 is located as a whole in the winding drum 1 and is provided with a socket 301 for inserting the corresponding adapter rod 543 on the side surface of the end away from the outer shaft 32. The end of the outer shaft 32 away from the inner shaft 30 extends out of the winding drum 1 and is fixed to the support frame 2. In this embodiment, by designing the shaft 3 to be formed by the coaxial fixed connection of the inner shaft 30 and the outer shaft 32, it can be convenient for production and assembly. In specific implementation, one end of the inner shaft 30 is inserted into the docking hole of the corresponding end face of the outer shaft 32 and then locked by inserting a pin from the side.

[0028] In an optional embodiment of the present application, as shown in Figures 1, 5 and 6, the rotating power member 42 also includes a winding core shaft 423 and a transmission shaft 425 that are pivotally mounted on the base 40 in parallel with each other, and a planar volute spring 427 that is wound on the winding core shaft 423 and whose outer end is fixed to the transmission shaft 425. The transmission shaft 425 is connected to the output shaft 421 by means of a gear pair 428. In this embodiment, the winding core shaft 425 is arranged axially parallel to the transmission shaft 425, and the planar volute spring 42 is used as a power member to drive the transmission shaft 425 to rotate, and then the output shaft 421 is rotated through the transmission of the gear pair 428. The installation is convenient, and the controllability of the driving force provided is strong, so that the driving force required for the curtain when it is retracted and released can be better designed. In addition, the overall structure is simple, easy to assemble and easy to operate.

[0029] In an optional embodiment of the present application, as shown in Figures 1 and 4-6, the gear pair 428 includes a driving gear 428a coaxially fixed with the transmission shaft 425, a driven gear 428b coaxially fixed with the output shaft 421, and a transition gear 428c pivotally mounted on the base 40 and meshing with the driving gear 428a and the driven gear 428b on either side. In this embodiment, the gear pair 428 includes the driving gear 428a, the driven gear 428b, and the transition gear 428c. The three gears are used to transmit rotational power in a step-by-step manner, thereby improving transmission efficiency by designing the transmission ratios of the three gears.

[0030] In an optional embodiment of the present application, as shown in Figures 1, 4-6, the winding mandrel 423 and the transition gear 428c are coaxially arranged and rotatably mounted on a pivot 429. The base 40 is provided with corresponding axial holes 401 for inserting opposite ends of the pivot 429. In this embodiment, the winding mandrel 423 and the transition gear 428c are mounted on the same pivot 429, allowing them to rotate independently around the pivot 429 without interfering with each other, and optimizing the structural spatial layout and reducing the volume.

[0031] In an optional embodiment of the present application, as shown in Figures 1 and 4-6, the roller blind drive device further includes a protective housing 56 that covers the guide rod 50, the guide sleeve 52, the connector module 54, the output shaft 421, and the driven gear 428b. The gear surfaces of the shaft rod 3 and the transition gear 428c extend into the protective housing 56 through pre-set through-holes 56a on opposite sides of the protective housing 56. The output shaft 421 is pivotally mounted on the protective housing 56, and the opposite ends of the guide rod 50 are respectively inserted and fixed into corresponding positioning holes 56b provided on opposite sides of the inner wall of the protective housing 56. In this embodiment, the protective housing 56 is provided to accommodate movable components such as the guide rod 50, the guide sleeve 52, the connector module 54, the output shaft 421, and the driven gear 428b, thereby preventing external foreign matter from interfering with the operation of the movable components, optimizing the overall structural layout, and achieving modular assembly.

[0032] In an optional embodiment of the present application, as shown in Figures 1, 4, and 6, the protective housing 56 is formed by interlocking a first half-shell 561 and a second half-shell 563. A support bushing 6 is integrally formed at one end of the first half-shell 561 adjacent to the outer shaft 32. The outer shaft 32 is correspondingly inserted into the support bushing 6. The inner shaft 30 is also assembled to a correspondingly formed bearing seat 56c within the protective housing 56 by means of a bearing 303. In this embodiment, by providing the support bushing 6 and inserting the outer shaft 32 therein, the outer shaft 32 can rotate about the outer shaft 32 while effectively supporting the winding drum 1 at the end opening of the winding drum 1, thereby achieving smooth rotation of the winding drum 1. Furthermore, the first half-shell 561 and the support bushing 6 are integrally formed, facilitating manufacturing and assembly and disassembly. Furthermore, by providing the bearing 303 to support the inner shaft 30, the support bushing 6, the protective housing 56, and the winding drum 1 can be smoothly rotated about the inner shaft 30.

[0033] In an optional embodiment of the present application, as shown in Figures 1 and 4 to 6, the base 4 is a drive housing that covers the winding core shaft 423, the transmission shaft 425, the planar spiral spring 427, the driving gear 428a, and the transition gear 428c. The drive housing 4 is connected to and fixedly connected to the protective housing 56, and a through hole 403 is provided on the shell wall at one end of the drive housing 4 for the gear surface of the transition gear 428c to extend out. In this embodiment, the drive housing is used as the base 4, which can effectively cover the main components of the rotating power part 42, realize the protection of the movable components and modular assembly, and the drive housing 4 is fixedly connected to the protective housing 56, which can facilitate synchronous rotation with the winding drum 1.

[0034] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, which all fall within the scope of protection of this application.

Claims

1. A roller blind driving device, comprising a shaft fixed to a support frame outside one end of a winding drum of a roller blind and inserted into the winding drum and arranged coaxially with the winding drum, and a driver arranged in the winding drum for driving the winding drum to rotate around the shaft, the driver comprising a base fixed relative to the winding drum in the circumferential direction and a rotating power member fixed on the base, characterized in that: The central axes of the output shaft of the rotating power part and the shaft rod have a predetermined non-zero angle, and the rolling shutter drive device also includes a transmission mechanism arranged between the output shaft and the shaft rod, the transmission mechanism includes a guide rod fixed relatively to the base, a guide sleeve slidably mounted on the guide rod, and two joint modules respectively connected to the guide sleeves, the guide sleeve includes a main sleeve and two sliding rods symmetrically protruding outward from opposite sides of the main sleeve, each of the joint modules includes a sliding sleeve slidably mounted on a corresponding one of the sliding rods and a transfer rod with one end pivotally connected to the sliding sleeve, the other ends of the two transfer rods belonging to the two joint modules are respectively fixed to the end of the output shaft and the end of the shaft rod in a one-to-one manner, and the ends pivotally connected to the sliding sleeve are respectively deviated from the central axes of the output shaft and the shaft rod.

2. The roller blind drive device according to claim 1, characterized in that: A U-shaped fork frame is formed at one end of the transfer rod, and circular shafts that are coaxial with each other and axially perpendicular to the central hole of the sleeve protrude from the opposite side walls of the sleeve respectively. The sleeve is placed in the fork frame and inserted into the corresponding pivot holes on the two opposite fork arms of the fork frame through the circular shaft.

3. The roller blind driving device according to claim 1, characterized in that: The central axes of the output shaft of the rotating power member and the shaft rod are perpendicular to each other.

4. The roller blind driving device according to claim 1, characterized in that: The shaft rod includes an inner shaft and an outer shaft which are coaxially fixedly connected. The inner shaft is entirely located inside the winding drum and has a socket for inserting a corresponding transfer rod on the side surface at one end away from the outer shaft. The end of the outer shaft away from the inner shaft extends out of the winding drum and is fixed on the support frame.

5. The roller blind driving device according to claim 4, characterized in that: The rotating power part also includes a winding core shaft and a transmission shaft which are arranged parallel to each other and pivoted on the base, and a planar volute spring which is wound on the winding core shaft and has its outer end fixed to the transmission shaft. The transmission shaft is connected to the output shaft by means of a gear pair.

6. The roller blind driving device according to claim 5, characterized in that: The gear pair comprises a driving gear coaxially fixed with the transmission shaft, a driven gear coaxially fixed with the output shaft, and a transition gear pivotally arranged on the base and meshing with the driving gear and the driven gear on both sides respectively.

7. The roller blind driving device according to claim 6, characterized in that: The winding core shaft and the transition gear are coaxially arranged and both are rotatably sleeved on a pivot shaft. The base is correspondingly provided with shaft holes for inserting the opposite ends of the pivot shaft.

8. The roller blind driving device according to claim 6, characterized in that: The roller blind driving device also includes a protective shell that correspondingly covers the guide rod, the guide sleeve, the joint module, the output shaft and the driven gear. The gear surfaces of the shaft rod and the transition gear extend into the protective shell from preset through holes on the shell walls on opposite sides of the protective shell respectively. The output shaft is pivoted on the protective shell, and the opposite ends of the guide rod are respectively inserted and fixed in the corresponding positioning holes on the inner walls on opposite sides of the protective shell.

9. The roller blind driving device according to claim 8, characterized in that: The protective shell is formed by a first half shell and a second half shell that are interlocked with each other. A support sleeve is integrally formed at one end of the first half shell adjacent to the outer shaft. The outer shaft is correspondingly inserted into the support sleeve. The inner shaft is also assembled on a correspondingly formed bearing seat in the protective shell with the aid of a bearing.

10. The roller blind drive device according to claim 8 or 9, characterized in that: The base is a drive housing that covers the winding core shaft, transmission shaft, planar scroll spring, driving gear and transition gear. The drive housing is connected to and fixedly connected to the protective housing, and a through hole is provided on the shell wall at one end of the drive housing for the gear surface of the transition gear to extend out.

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