CN209855675U

CN209855675U - Helical gear planet wheel speed reduction rolling curtain head

Info

Publication number: CN209855675U
Application number: CN201920126487.6U
Authority: CN
Inventors: 邱永忠
Original assignee: Guangzhou Jue Decoration Window Decoration Technology Co Ltd
Current assignee: Guangzhou Jue Decoration Window Decoration Technology Co Ltd
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2019-12-27
Anticipated expiration: 2029-01-23

Abstract

The utility model discloses a helical gear planet wheel speed reduction roll-up system head, it includes mount pad, planetary gear mechanism and system skull, planetary gear mechanism is equipped with the sprocket of helical gear, a plurality of helical gear planet wheel and a planet wheel carrier including sun gear, the inboard that is equipped with the helical gear, all helical gear planet wheels all with the inboard meshing of sprocket, the one end of sun gear is fixed on the mount pad, the system skull is installed on planet wheel carrier. The utility model discloses a thereby the rotatory rotation that drives the planet wheel carrier on the helical tooth planet wheel of pulling sprocket, the system skull on the planet wheel carrier produces the rotation that slows down along with the rotation of sprocket, because the inboard of sun gear, helical tooth planet wheel and sprocket among the planetary gear mechanism all is the helical tooth meshing respectively, consequently in the course of the work, the noise is less, and the motion is steady, and the bearing capacity is also great. Meanwhile, according to different requirements, helical gears with different specifications can be selected to generate different reduction ratios, so that the speed control of the rotation of the head is achieved.

Description

Helical gear planet wheel speed reduction rolling curtain head

Technical Field

The utility model relates to a system head, especially a helical tooth planet wheel speed reduction roll of curtain system head among the window decoration product technical field.

Background

The structure of the rolling curtain head of the existing planetary gear speed reducing structure on the market is a speed reducing structure of a planetary gear based on a cylindrical straight gear, and the rolling curtain head has the advantages of higher noise, unstable operation and insufficient bearing force in the working process. And because the modulus is less, the tooth fracture often takes place and makes the system can not normally work, and the noise is great, also influences the environment and the mood of rest and work. With the continuous improvement of the quality of life, people put forward higher and higher requirements on the rolling head of the core component of the rolling curtain with a very wide application range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a helical tooth planet wheel speed reduction roll-up system head, its motion is steady and the noise is less.

The utility model provides a solution of its technical problem is: the utility model provides a helical gear planet wheel speed reduction roll-up system head, its includes mount pad, planetary gear mechanism and system skull, planetary gear mechanism is equipped with the sprocket of skewed tooth, a plurality of helical gear planet wheel and a planet wheel carrier including sun gear, the inboard that is equipped with the skewed tooth, inboard, and all helical gear planet wheels all mesh with the inboard of sprocket, the one end of sun gear is fixed on the mount pad, the system skull is installed on planet wheel carrier.

As a further improvement of the technical scheme, a main shaft is arranged at the other end of the sun gear, the main shaft penetrates through the head making cover, and a braking device is arranged between the main shaft and the head making cover.

As a further improvement of the technical scheme, the braking device comprises a torsion spring and a rotating arm arranged on the planet carrier, the two ends of the torsion spring are bent outwards to form protruding parts, an opening is formed in the side face of the rotating arm, the rotating arm is sleeved on the outer side of the torsion spring, and the two ends of the opening can be respectively connected with the protruding parts at the two ends of the torsion spring.

As a further improvement of the technical scheme, the inner wall of the head making cover is provided with a patch, and two ends of the patch can be respectively connected with the protruding parts at two ends of the torsion spring.

As a further improvement of the technical scheme, the end faces of the two ends of the opening are opposite to the unlocking faces of the two protruding portions, and the end faces of the two ends of the patch are opposite to the locking faces of the two protruding portions.

As a further improvement of the technical scheme, the braking device further comprises a shaft sleeve sleeved on the outer side of the main body shaft, and the shaft sleeve is installed between the main body shaft and the torsion spring.

As the further improvement of the technical scheme, the top end of the main body shaft is connected with the locking cap, a plurality of step blocks are arranged on the top end face of the head making cover in the circumferential direction of the main body shaft, and the bottom face of the locking cap can be connected with the shoulder of the step blocks.

As a further improvement of the technical scheme, a gap is formed between the bottom surface of the locking cap and the shoulder of the step block.

The utility model has the advantages that: the utility model discloses a thereby the rotatory rotation that drives the planet wheel carrier on the helical tooth planet wheel of pulling sprocket, the system skull on the planet wheel carrier produces the rotation that slows down along with the rotation of sprocket, because the inboard of sun gear, helical tooth planet wheel and sprocket among the planetary gear mechanism all is the helical tooth meshing respectively, consequently in the course of the work, the noise is less, and the motion is steady, and the bearing capacity is also great. Meanwhile, according to different requirements, helical gears with different specifications can be selected to generate different reduction ratios, so that the speed control of the rotation of the head is achieved.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is an exploded view of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a front sectional view of the present invention;

fig. 4 is a top view of the head cover, torsion spring and rotating arm of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions.

Referring to fig. 1 to 4, a helical gear planet wheel speed reduction roller shutter head includes a mounting base 10, a planetary gear mechanism and a head cover 7, the planetary gear mechanism includes a sun gear 1 provided with helical teeth, a sprocket 2 provided with helical teeth on the inner side, a plurality of helical gear planet wheels 3 and a planet wheel carrier 4, all the helical gear planet wheels 3 are engaged with the inner side of the sprocket 2, one end of the sun gear 1 is fixed on the mounting base 10, and the head cover 7 is installed on the planet wheel carrier 4. The pull beads are matched with the chain wheel 2, and the pull beads are pulled to enable the chain wheel 2 to rotate. The helical teeth on the inner side of the chain wheel 2 are meshed with the helical teeth planet wheels 3, and the helical teeth planet wheels 3 are meshed with the fixed sun wheel 1 at the same time, so that the planet wheel carrier 4 fixed on the end face of the helical teeth planet wheel 3 rotates by taking the sun wheel 1 as the circle center. Because of using the transmission of planetary gear mechanism, consequently can realize making the speed reduction of skull 7 and rotate, can select sun gear 1, sprocket 2 or the meshing of skewed tooth planet wheel 3 of different specifications simultaneously according to different demands to produce different reduction ratios. And because all gears in the planetary gear mechanism are meshed through helical teeth, the tooth surfaces of the gears are in discontinuous collision when the planetary gear mechanism is different from the common cylindrical gear in meshing, so that the noise in operation is greatly reduced, the operation is more stable and smooth, and the bearing capacity is higher.

In a further preferred embodiment, a main shaft 11 is provided at the other end of the sun gear 1, the main shaft 11 penetrates the maker cover 7, and a brake device is provided between the main shaft 11 and the maker cover 7. The braking device can prevent the head cover 7 from being used as a driving part to drive the chain wheel 2 to rotate, and the motion state of the head cover 7 can only be determined by the motion state of the chain wheel 2.

Further as a preferred embodiment, the braking device includes a torsion spring 5 and a rotating arm 41 disposed on the planet carrier 4, both ends of the torsion spring 5 are bent outwards to form a protrusion, an opening is disposed on a side surface of the rotating arm 41, the rotating arm 41 is sleeved on the outer side of the torsion spring 5, and both ends of the opening can be respectively connected with the protrusions at both ends of the torsion spring 5. The end faces of both ends of the opening are opposite to the unlocking faces 51 of the two projections. When the rotation arm 41 is an active member, one side of the opening of the rotation arm 41 rotates and comes into contact with the unlocking surface 51 of the protrusion of the torsion spring 5. The internal diameter of torsional spring 5 becomes big, and it has the space with main part axle 11 between, and the surface friction between main part axle 11 is less, and torsional spring 5 is in the unblock state, makes lid 7 and can make free rotation promptly.

Further preferably, a patch 71 is disposed on the inner wall of the skull forming cover 7, and two ends of the patch 71 can be respectively connected with the protrusions at two ends of the torsion spring 5. The two end faces of the patch 71 are opposite to the locking faces 52 of the two protrusions. When the head making cover 7 is an active part, the patch 71 on the inner side of the head making cover rotates and contacts with the locking surface 52 of the protrusion of the torsion spring 5. The inner diameter of the torsion spring 5 is reduced, the surface friction force between the torsion spring and the boss 6 is increased, and the stopper cover 7 is locked more tightly, so that the stopper cover 7 cannot rotate freely. In addition, the patches 71 also prevent the headforming lid 7 from crushing the torsion spring 5.

Further as a preferred embodiment, the braking device further comprises a shaft sleeve 6 sleeved outside the main body shaft 11, and the shaft sleeve 6 is installed between the main body shaft 11 and the torsion spring 5. Since the torsion spring 5 is often held tightly against the main shaft 11 when it is operated, and the main shaft 11 is easily worn, the boss 6 is provided outside the main shaft 11. Preferably, the shaft sleeve 6 is made of a wear-resistant metal material, and protects the main body shaft 11 from being worn, thereby ensuring the matching accuracy of the parts.

Further as a preferred embodiment, the top end of the main body shaft 11 is connected with a locking cap 8, a plurality of step blocks 72 are arranged on the top end face of the head making cover 7 around the circumference of the main body shaft 11, and the bottom face of the locking cap 8 can be connected with the shoulders of the step blocks 72. The locking cap 8 is fixed on the top end of the main body shaft 11 to limit the head making cover 7.

Further as a preferred embodiment, there is a gap between the bottom surface of the locking cap 8 and the shoulder of the step block 72. After the assembly of the brake head structure is completed, the brake head cover 7 can be pulled towards the locking cap 8, so that a proper gap is generated between the planet wheel carrier 4 and the mounting seat 10, and the pull bead can be mounted on the chain wheel 2 conveniently.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. The utility model provides a helical tooth planet wheel speed reduction roll-up system head which characterized in that: including mount pad (10), planetary gear mechanism and system skull (7), planetary gear mechanism is equipped with sprocket (2) of skewed tooth, a plurality of skewed tooth planet wheel (3) and a planet wheel carrier (4) including sun gear (1), the inboard that is equipped with the skewed tooth, all skewed tooth planet wheels (3) all mesh with the inboard of sprocket (2), the one end of sun gear (1) is fixed on mount pad (10), install on planet wheel carrier (4) system skull (7).

2. The helical gear planet wheel deceleration rolling shutter head according to claim 1, characterized in that: be equipped with main part axle (11) on the other end of sun gear (1), system skull (7) are run through to main part axle (11), be equipped with arresting gear between main part axle (11) and the system skull (7).

3. The helical gear planet wheel deceleration rolling shutter head according to claim 2, characterized in that: arresting gear includes torsional spring (5) and rocking arm (41) of setting on planet wheel carrier (4), the bulge is all outwards bent into at the both ends of torsional spring (5), the side of rocking arm (41) is equipped with the opening, rocking arm (41) cover is in the outside of torsional spring (5), the open-ended both ends can respectively with meeting of the bulge at torsional spring (5) both ends.

4. The helical gear planet wheel deceleration rolling shutter head according to claim 3, characterized in that: the inner wall of the head making cover (7) is provided with a patch (71), and two ends of the patch (71) can be respectively connected with the convex parts at two ends of the torsion spring (5).

5. The helical gear planet wheel deceleration rolling shutter head according to claim 4, characterized in that: the end faces of the two ends of the opening are opposite to the unlocking faces (51) of the two protruding portions, and the end faces of the two ends of the patch (71) are opposite to the locking faces (52) of the two protruding portions.

6. The helical gear planet wheel deceleration rolling shutter head according to claim 3, characterized in that: the braking device further comprises a shaft sleeve (6) sleeved on the outer side of the main body shaft (11), and the shaft sleeve (6) is installed between the main body shaft (11) and the torsion spring (5).

7. The helical gear planet wheel deceleration rolling shutter head according to claim 2, characterized in that: the top of main part axle (11) is connected with locking cap (8), be equipped with a plurality of ladder blocks (72) around main part axle (11) circumference on the top face of system skull (7), the bottom surface of locking cap (8) can meet with the shoulder of ladder block (72).

8. The helical gear planet gear speed reduction rolling shutter head according to claim 7, characterized in that: a gap is reserved between the bottom surface of the locking cap (8) and the shoulder of the step block (72).