Planetary speed reduction structure of single-phase tubular motor

Abstract

The utility model relates to the field of motor transmission, and discloses a single-phase tubular motor planetary speed reduction structure which comprises a first-stage inner gear sleeve, a duplex planet carrier, a duplex planet wheel, a movable gear ring, a second-stage planet gear, a second-stage inner gear sleeve, an inner gear sleeve seat and an output support. A duplex planet carrier is arranged in the first-stage inner gear sleeve, a plurality of duplex planet gears are rotationally installed in the duplex planet carrier, and the duplex planet gears are meshed with the inner wall of the first-stage inner gear sleeve. The duplex planet carrier is connected with the movable gear ring, and the duplex planet carrier is meshed with the inner tooth part of the movable gear ring; the movable gear ring is meshed with a plurality of second-stage planetary gears, and the second-stage planetary gears are meshed with the second-stage inner gear sleeve. According to the utility model, the duplex planet gear, the movable gear ring and the secondary gear system are ingeniously integrated, so that a two-stage planetary speed reduction structure with a one-way transmission characteristic is constructed, and the problems that the output end of a traditional tubular motor is easy to reverse, the structure is complex and the brake dependence is strong are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of motor drive, concretely is a single -phase tubular motor planetary reduction structure. BACKGROUND

[0002] As a key executive component in the driving system, tubular motor has been widely used in electric roller shutter, sunshade curtain, lifting window and automatic door scenes. Such applications usually require the driving mechanism to have good output torque performance and stable one-way transmission ability while being compact in structure to adapt to the installation environment with limited space but heavy load.

[0003] In the existing tubular motor technology, the common planetary reduction mechanism adopts two-stage planetary gear train or the traditional combination structure of sun gear, planetary gear and inner gear ring. This kind of structure usually realizes deceleration output through the meshing of multiple gears in stages, and relies on the brake device to prevent the motor from reversing under the load reverse torque.

[0004] However, in the prior art, the output shaft is prone to reverse rotation under external force in the absence of an effective locking mechanism, which poses a safety hazard. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a single -phase tubular motor planetary reduction structure to solve the problem of reverse rotation of the output shaft under external force in the absence of an effective locking mechanism, which poses a safety hazard.

[0006] In order to achieve the above utility model purposes, the utility model adopts the following technical scheme: a single -phase tubular motor planetary reduction structure, comprising a primary inner tooth sleeve, a double planetary gear carrier, a double planetary gear, a movable gear ring, a secondary planetary gear, a secondary inner tooth sleeve, an inner tooth sleeve seat and an output support;

[0007] The primary inner tooth sleeve is provided with a double planetary gear carrier, the double planetary gear carrier is rotatably installed with a plurality of double planetary gears, and the double planetary gears are engaged with the inner wall of the primary inner tooth sleeve.

[0008] The double planetary gear carrier is connected with the movable gear ring, and the double planetary gears are engaged with the inner tooth part of the movable gear ring.

[0009] The movable gear ring is engaged with a plurality of secondary planetary gears, the secondary planetary gears are engaged with the secondary inner tooth sleeve, and the secondary inner tooth sleeve is connected with the inner tooth sleeve seat.

[0010] The output support is arranged in the inner tooth sleeve seat and is rotatably connected with the secondary planetary gears.

[0011] Preferably, the double planetary gears are arranged at equal intervals in the circumferential direction in the double planetary gear carrier.

[0012] Preferably, the double planetary gears each include a first gear and a second gear, the first gear being engaged with the first inner gear sleeve, and the second gear being engaged with the inner tooth portion of the movable gear ring.

[0013] Preferably, the second planetary gears are arranged around the movable gear ring and engaged with the second inner gear sleeve.

[0014] Preferably, the output support is fixedly connected with the inner gear sleeve seat through a snap spring and is inserted into the second planetary gears and rotationally matched with the second planetary gears through a bearing.

[0015] Preferably, the second inner gear sleeve and the inner gear sleeve seat are connected through tooth structures matched with each other.

[0016] Compared with the prior art, the single-phase tubular motor planetary reduction structure has the following beneficial effects:

[0017] I. In the utility model, the double planetary gears, the movable gear ring and the second gear system are ingeniously integrated to construct a two-stage planetary reduction structure with one-way transmission characteristics, effectively solving the problems of easy reverse rotation of the output end, complex structure and strong dependence on the brake in the traditional tubular motor.

[0018] Through the double gear difference cooperation, the output transmission has a one-way control effect in structure, which can prevent the motor from rotating back when stopping or under the action of the load, and improves the overall use safety.

[0019] II. The structure connects the output support and the inner gear sleeve seat through a snap spring, realizes structural stability while ensuring convenient assembly, simplifies the installation process, and connects the planetary gears at each stage through bearings, which not only improves the transmission efficiency but also reduces the friction loss and noise level during movement. The whole machine structure is compact, the number of components is relatively small, and it is suitable for occasions with limited axial space. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic view of an embodiment.

[0021] Figure 2 It is a top view schematic view of an embodiment.

[0022] Figure 3 It is a sectional view schematic view of an embodiment at A-A.

[0023] Figure 4 It is a split schematic view of an embodiment of the inner gear sleeve seat, the second inner gear sleeve and the first inner gear sleeve.

[0024] Figure 5 It is a schematic view of an embodiment of the double planetary gears.

[0025] In the diagram: 1. Internal gear sleeve seat; 2. Output bracket; 3. Second-stage internal gear sleeve; 4. Second-stage planetary gear; 5. Moving gear ring; 6. Double planetary gear; 601. First gear; 602. Second gear; 7. Double planetary gear carrier; 8. First-stage internal gear sleeve. Detailed Implementation

[0026] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0027] like Figures 1-5 As shown, a planetary reduction structure for a single-phase tubular motor includes a primary internal gear sleeve 8, a double planetary gear carrier 7, double planetary gears 6, a moving gear ring 5, a secondary planetary gear 4, a secondary internal gear sleeve 3, an internal gear sleeve seat 1, and an output bracket 2. The primary internal gear sleeve 8 houses the double planetary gear carrier 7, within which multiple double planetary gears 6 are rotatably mounted. The double planetary gears 6 mesh with the inner wall of the primary internal gear sleeve 8. The double planetary gear carrier 7 is connected to the moving gear ring 5, and the double planetary gears 6 mesh with the internal teeth of the moving gear ring 5. The moving gear ring 5 meshes with multiple secondary planetary gears 4, which in turn mesh with the secondary internal gear sleeve 3. The secondary internal gear sleeve 3 is connected to the internal gear sleeve seat 1. The output bracket 2 is located within the internal gear sleeve seat 1 and rotatably connected to the secondary planetary gears 4. Each double planetary gear 6 includes a first gear 601 and a second gear 602. The first gear 601 meshes with the primary internal gear sleeve 8, and the second gear 602 meshes with the internal teeth of the moving gear ring 5.

[0028] In this device, the motor output shaft is connected to the primary sun gear, which drives the double planetary gear 6 arranged inside the primary internal gear sleeve 8 to rotate. The first gear 601 of the double planetary gear 6 meshes with the primary internal gear sleeve 8 to achieve primary speed reduction;

[0029] Simultaneously, the second gear 602 of the double planetary gear 6 meshes with the internal teeth of the front moving gear ring 5, thereby driving the moving gear ring 5 to rotate. When the moving gear ring 5 rotates, its external teeth will drive the four secondary planetary gears 4 arranged around it to rotate synchronously. The secondary planetary gears 4 then mesh with the externally fixed secondary internal gear sleeve 3 to achieve a two-stage reduction process. Finally, the output bracket 2 is inserted into the secondary planetary gear 4 and is rotatably connected to it through bearings, stably outputting the reduced power.

[0030] like Figures 1-4 As shown, there are three double planetary gears 6, which are arranged at equal intervals along the circumference in the double planetary gear carrier 7; there are four secondary planetary gears 4, which are arranged around the moving gear ring 5 and mesh with the secondary internal gear sleeve 3. The output bracket 2 is connected and fixed to the internal gear sleeve seat 1 by a snap ring and is inserted into the secondary planetary gear 4. It rotates with the gear through a bearing. The secondary internal gear sleeve 3 and the internal gear sleeve seat 1 are connected by a meshing tooth structure.

[0031] In the device, the front end of the output support 2 is fixed with the inner tooth sleeve base 1 through a snap spring, axial limiting and stable support are realized. The transmission path of the whole speed reduction structure is clear and compact, the tooth difference structure cooperation between the double planetary gears 6 effectively limits the transmission direction, the structure itself has the one-way output function, the reverse rotation of the driving part when the load is reversed is avoided, and thus the traditional brake assembly is saved.

[0032] In the non-working state, since the primary inner tooth sleeve 8 and the secondary inner tooth sleeve 3 are fixed structures, cooperating with the double tooth difference mechanism, the output end cannot drive the whole system to rotate reversely even if it is subjected to external force, and the structure self-locking is realized.

[0033] The above is only the preferred specific implementation mode of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A planetary reduction gear structure for a single-phase tubular motor, characterized in that, It includes a first-stage internal gear sleeve (8), a double planetary gear carrier (7), a double planetary gear (6), a moving gear ring (5), a second-stage planetary gear (4), a second-stage internal gear sleeve (3), an internal gear sleeve seat (1), and an output bracket (2); The first-stage internal gear sleeve (8) is provided with a double planetary gear carrier (7), and multiple double planetary gears (6) are rotatably installed in the double planetary gear carrier (7). The double planetary gears (6) mesh with the inner wall of the first-stage internal gear sleeve (8). The double planetary gear carrier (7) is connected to the moving gear ring (5), and the double planetary gear (6) meshes with the internal teeth of the moving gear ring (5); The moving gear ring (5) meshes with multiple secondary planetary gears (4), the secondary planetary gears (4) mesh with the secondary internal gear sleeve (3), and the secondary internal gear sleeve (3) is connected to the internal gear sleeve seat (1); The output bracket (2) is located inside the internal gear sleeve (1) and is rotatably connected to the secondary planetary gear (4).

2. The planetary reduction gear structure for a single-phase tubular motor according to claim 1, characterized in that: The double planetary gears (6) are configured as three, and are arranged at equal intervals along the circumference within the double planetary gear carrier (7).

3. The planetary reduction gear structure for a single-phase tubular motor according to claim 1, characterized in that: The double planetary gear (6) includes a first gear (601) and a second gear (602). The first gear (601) meshes with the first-stage internal gear sleeve (8), and the second gear (602) meshes with the internal teeth of the moving gear ring (5).

4. The planetary reduction gear structure for a single-phase tubular motor according to claim 1, characterized in that: The secondary planetary gears (4) are configured as four, arranged around the moving gear ring (5) and meshing with the secondary internal gear sleeve (3).

5. The planetary reduction gear structure for a single-phase tubular motor according to claim 4, characterized in that: The output bracket (2) is connected and fixed to the internal gear sleeve (1) by a snap ring, and is inserted into the second-stage planetary gear (4), and rotates with it through a bearing.

6. The planetary reduction gear structure for a single-phase tubular motor according to claim 1, characterized in that: The secondary internal gear sleeve (3) and the internal gear sleeve seat (1) are connected by a meshing tooth structure.

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