CN217610476U - Pulley and sliding rail system - Google Patents

Abstract

The utility model relates to the technical field of electric curtains, in particular to a pulley and a slide rail system, wherein the slide rail system comprises a rail and a pulley, the pulley comprises a frame, a first roller and a second roller, and the first roller is rotatably arranged on the frame; the second roller is rotatably arranged on the frame, and a convex ring is arranged on the outer peripheral surface of the second roller; the rotation axis of first gyro wheel and second gyro wheel all is on a parallel with first direction, and first gyro wheel and second gyro wheel set up along second direction interval, and first direction perpendicular to second direction. Through set up the bulge loop on the second gyro wheel, when the terminal surface of bulge loop and track contact, the track can apply reaction force to the bulge loop to reduce the angle of coaster biasing or slope, reduce frictional force between coaster and the track, and then improve slide rail system takes place the phenomenon of card dun, abnormal sound even damage in the use, the noise reduction, the extension the life of coaster.

Description

Pulley and sliding rail system

Technical Field

The utility model relates to an electric window curtain technical field especially relates to a coaster and slide rail system.

Background

The electric curtain generally comprises a motor, a curtain guide rail, a belt and a pulley, wherein the motor provides power to drive the belt and the pulley to move on the rail, and the pulley drives the curtain to move so as to control the opening and closing of the curtain. In the actual use process, the curtain cloth is generally hung on one side of the track instead of the right below, so that the pulley can be subjected to moment in a direction parallel to the curtain guide rail, and the pulley can be biased or inclined in the running process, so that the pressure on the roller on the pulley is uneven, and the friction force of the pulley relative to the curtain guide rail is increased; even the pulley is directly contacted with the curtain guide rail, and the friction force between the pulley and the curtain guide rail is increased. The increase of the friction force can cause the phenomena of blocking, abnormal sound and even damage of the electric curtain in the using process, thereby influencing the use of users, generating larger noise and influencing the service life of the electric curtain.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a coaster and slide rail system aims at solving the coaster problem that appears the bias or slope in the operation process, reduces the frictional force between coaster and the (window) curtain guide rail, reduces the phenomenon that electric window curtain took place the card pause, abnormal sound damage even in the use, noise reduction, extension electric window curtain's life.

In order to solve the above technical problem, an embodiment of the present invention adopts a technical solution that: providing a tackle comprising a frame, a first roller and a second roller, wherein the first roller is rotatably arranged on the frame; the second roller is rotatably arranged on the frame, and a convex ring is arranged on the outer peripheral surface of the second roller; the rotation axes of the first roller and the second roller are parallel to a first direction, the first roller and the second roller are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

In some embodiments, the convex ring is located in the middle of the second roller along the direction of the axis of the second roller.

In some embodiments, the second roller is spaced apart from at least one of the first rollers along a third direction, the third direction being perpendicular to the first direction and the second direction.

In some embodiments, the tackle further includes a third roller rotatably disposed on the frame, wherein an axis of rotation of the third roller is parallel to the second direction.

In some embodiments, the tackle further includes a mounting portion, one end of the mounting portion being connected to the frame, and the other end of the mounting portion extending out of the frame and being adapted to be connected to a suspension.

The embodiment of the utility model provides an another technical scheme who adopts is: providing a rail system, wherein the rail system comprises a rail and the pulley as described above, the rail comprises a rail, the rail and the rail extend along a third direction, the rail is arranged between the first roller and the second roller, the rail is in contact with the outer peripheral surface of the first roller and the outer peripheral surface of the second roller, and the rail is also in contact with the end surface of the convex ring; the rail bar faces one side of the first roller wheel and is provided with a convex rib, the convex rib extends along the third direction, and the convex rib is in contact with the end face of the first roller wheel.

In some embodiments, the rib is located on a side of the first roller facing away from the frame, or on a side of the first roller facing toward the frame.

In some embodiments, the slide rail system further comprises a drive assembly for driving the sled in translational movement along the track.

In some embodiments, the driving assembly includes a conveyor belt connected to the frame, and a motor for driving the conveyor belt to move so as to drive the carriage to move in translation along the track.

In some embodiments, the driving assembly further includes a pulley, the belt is sleeved on the pulley, the pulley is used for driving the belt to run along the extending direction of the belt, and the motor is in transmission connection with the pulley so as to drive the pulley to move in a translational manner along the track.

Be different from the condition of correlation technique, the utility model discloses coaster and slide rail system are provided with the second gyro wheel, be provided with the bulge loop on the second gyro wheel, work as the terminal surface of bulge loop with during the rail contact, the track can to reaction force is applyed to the bulge loop, thereby reduces the angle of coaster biasing or slope reduces frictional force between coaster and the track, and then improves slide rail system takes place the phenomenon that the card is dun, abnormal sound damaged even in the use, noise abatement, extension the life of coaster.

Drawings

Fig. 1 is a schematic structural diagram of a slide rail system according to an embodiment of the present invention;

fig. 2 is an exploded view of a sliding track system according to an embodiment of the present invention;

FIG. 3 is a schematic view of the carriage of FIG. 1 engaged with a track;

FIG. 4 is a schematic view of the construction of the sled of FIG. 1;

FIG. 5 is a schematic view of the second roller shown in FIG. 4;

FIG. 6 is a schematic view of the third roller of FIG. 1 engaged with the rail;

fig. 7 is a schematic view of the structure of fig. 2 showing the cooperation of the pulley, the belt and the motor.

The reference numerals in the specific examples are as follows:

100. a slide rail system;

1. a track; 11. a rail bar; 111. a rib is protruded;

2. a pulley; 21. a frame; 211. installing a shaft; 22. a first roller; 23. a second roller; 231. a convex ring; 24. a third roller; 25. an installation part;

3. a drive assembly; 31. a pulley; 32. a conveyor belt; 33. a motor; 34. a housing.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

When the electric curtain is used, the curtain cloth is generally hung on one side of the track instead of the right lower side, so that the pulley can be subjected to moment in a direction parallel to the curtain guide rail, the pulley can be biased or inclined in the running process, the pressure between the roller close to one side of the curtain cloth and the track is increased, the pressure between the roller on the other side and the track is reduced, or the roller on the other side is tilted to be in contact with other parts above the roller, so that the pulley can be subjected to a plurality of acting forces in the running process, and the friction force of the pulley relative to the curtain guide rail is increased; when the moment is too large, the pulley is even directly contacted with the curtain guide rail, rolling friction is changed into sliding friction, and the friction force between the pulley and the curtain guide rail is increased. The increase of the friction force can cause the phenomena of blocking, abnormal sound and even damage of the electric curtain in the using process, thereby influencing the use of users, generating larger noise and influencing the service life of the electric curtain.

As shown in fig. 1, in order to solve the above technical problem, an embodiment of the present invention provides a slide rail system 100, the slide rail system 100 includes a rail 1, a pulley 2 and a driving component 3, the rail 1 is used for providing support and guiding spacing, the pulley 2 is used for hanging a suspension object and can move along the rail 1, so as to drive the suspension object to move, for example, drive a curtain to open and close, the driving component 3 is used for driving the pulley 2 to move along the rail 1, so as to drive the curtain to automatically open and close, thereby realizing an electric curtain.

As for the track 1, as shown in fig. 1 to 3, the track 1 includes rails 11, the track 1 and the rails 11 extend along a third direction Y, and two rails 11 are taken as an example in the drawing, and the two rails 11 are arranged at intervals along a first direction X, which is perpendicular to the third direction Y. The first direction X and the third direction Y are both horizontal directions, and the two rails 11 are arranged at intervals on a horizontal plane, so that the pulley 2 is guided to move linearly on the horizontal plane, the occurrence of a ramp is reduced, the sliding of the pulley 2 along the rails 11 under the gravity due to the inclination of the rails 11 is reduced, and the difficulty in opening and closing or the abnormal opening and closing of the curtain is improved. Optionally, the rail 11 may also be designed to extend along a curve in a horizontal plane, so as to adapt to different application scenarios, for example, a cambered surface window, a curtain needs to be abutted against a window body, and the design of the track 1 also needs to design a curve according to the shape of the window body; for example, the corners of the wall body are provided with windows on two adjacent walls, the window curtain can be designed into a whole curtain, and the corners of the wall body are required to be provided with a section of arc-shaped track 1 for transition. Optionally, the track 1 is made of C-shaped steel, and the rail 11 is arranged on two sides of a notch of the C-shaped steel.

As for the tackle 2, as shown in fig. 2 to 4, the tackle 2 includes a frame 21, a first roller 22, a second roller 23, a third roller 24 and a mounting portion 25, wherein the frame 21 is used for mounting the first roller 22, the second roller 23, the third roller 24 and the mounting portion 25; the first roller 22, the second roller 23 and the third roller 24 are used for contacting with the rail 11 to convert sliding friction into rolling friction, thereby reducing friction force; the mounting portion 25 is adapted to be coupled to a suspension so that the suspension is translationally movable along the rail 11.

For the above vehicle frame 21, as shown in fig. 4, a plurality of mounting shafts 211 are disposed on the vehicle frame 21, the mounting shafts 211 are used for penetrating the first roller 22, the second roller 23 and the third roller 24, and bearings may be disposed between the first roller 22, the second roller 23 and the third roller 24 and the mounting shafts 211 to further reduce friction.

As for the first roller 22, as shown in fig. 2 to 3, the first roller 22 is rotatably disposed on the frame 21, a rotation axis of the first roller 22 is parallel to the first direction X, the first roller 22 is disposed on one side of the rail 11 along a second direction Z, an outer peripheral surface of the first roller 22 contacts the rail 11, and the second direction Z is perpendicular to the first direction X and the third direction Y. The second direction Z is perpendicular to the horizontal plane, that is, the first roller 22 is disposed above the rail 11, and in the figure, taking two rails 11 as an example, at least one first roller 22 is disposed above one rail 11, so that the frame 21 is not easy to fall off downwards between the two rails 11. Optionally, four first rollers 22 are provided, and the four first rollers 22 are arranged in a trapezoid. Optionally, the number of the first rollers 22 is four, the four first rollers 22 are arranged in a rectangular shape, and two pairs of the first rollers are arranged in a coaxial line, so that the stability of the frame 21 sliding above the rail bar 11 is increased, more stable support is provided, and friction is reduced. Optionally, the length of the first roller 22 along its own axis is greater than the distance between the two rails, so that the outer peripheral surfaces of the two ends of the first roller 22 are respectively in contact with the two rails 11, the structure is simplified, and the cost is reduced.

As for the second roller 23, as shown in fig. 2 to 4, the second roller 23 is rotatably disposed on the frame 21, a rotation axis of the second roller 23 is parallel to the first direction X, the second roller 23 is located on a side of the rail 11 away from the first roller 22 along the second direction Z, and an outer peripheral surface of the second roller 23 contacts the rail 11. The second direction Z is a direction perpendicular to the horizontal plane, i.e. the second roller 23 is located below the rail 11, i.e. the rail 11 is disposed between the first roller 22 and the second roller 23. Therefore, the frame 21 is not easy to be separated upwards from the two rails 11, the sliding connection effect between the frame 21 and the rails 11 is enhanced, the situations of inclination and derailment of the frame 21 are reduced, the service life is prolonged, and the problems of blockage, noise emission and damage are solved.

Specifically, as shown in fig. 3 to 5, the outer peripheral surface of the second roller 23 is provided with a convex ring 231, and an end surface of the convex ring 231 may contact the rail 11. Through the arrangement of the convex ring 231, the rail 11 can generate a force parallel to the second direction Z on the second roller 23, so that the situation of offset or inclination in the running process of the pulley 2 is reduced, the acting force on the pulley 2 is reduced, the friction force of the pulley 2 relative to the curtain guide rail is reduced, the phenomena of blocking, abnormal sound and even damage of the pulley 2 in the using process are further improved, the noise is reduced, and the service life is prolonged. Alternatively, the outer circumferential surfaces of both ends of the second roller 23 are respectively in contact with the bottom surfaces of the two rails 11, thereby increasing the stability of the rolling contact. Optionally, two end surfaces of the protruding ring 231 are respectively in contact with two opposite sides of the two rail bars 11, so that the position of the second roller 23 along the second direction Z can be limited, that is, the second roller 23 is always located right below the middle of the two rail bars 11, the stability of the running of the pulley 2 on the track 1 is further improved, the blocking and abnormal sound are reduced, and suspended objects can be hung on two horizontal sides of the pulley 2 perpendicular to the sliding direction, so that the fool-proof effect is improved, and the use effect is enhanced. Alternatively, the convex ring 231 is located in the middle of the second roller 23 along the axial direction thereof.

Optionally, as shown in fig. 4, in the third direction Y, the second roller 23 is disposed at least spaced apart from one of the first rollers 22, that is, the second roller 23 is disposed on one side of one or more of the first rollers 22, and a moment arm can be formed between the first roller 22 and the second roller 23, so as to reduce a moment generated when a suspended object is hung on the other side of the first roller 22. That is, when the second roller 23 is disposed on one side of the first roller 22 along the first direction X and the suspension is hung on the other side of the first roller 22 along the first direction X, the rail 11 generates a downward acting force on the second roller 23, so as to slow down a moment generated by the suspension on the tackle 2, reduce a situation that the tackle 2 is inclined or biased, and reduce a friction force.

As shown in fig. 2, 4 and 6, the third roller 24 is rotatably disposed on the frame 21, the rotation axis of the third roller 24 is parallel to the second direction Z, and the outer peripheral surface of the third roller 24 contacts the rail 11. Taking the two rails 11 as an example, the third rollers 24 are used to contact with two opposite sides of the two rails 11, so as to reduce the situation that the vehicle frame 21 directly contacts with the rails 11 and reduce the friction force; and through setting up the third gyro wheel 24, the distance between the said third gyro wheel 24 and the said rail 11 is small, when the said coaster 2 appears the minor slope, the said third gyro wheel 24 can contact with the said rail 11, reduce the said coaster 2 appears the situation of further slope, thus improve the said coaster 2 and appear the situation of slope or offsetting, reduce the friction. Alternatively, two third rollers 24 are provided.

As for the mounting portion 25, as shown in fig. 2 and 4, one end of the mounting portion 25 is connected to the frame 21, and the other end of the mounting portion 25 extends out of the frame 21 and is used for connecting with a suspension. The both ends of installation department 25 all set up in the mounting hole, are convenient for connect. Alternatively, the mounting portion 25 may protrude toward a horizontal side of the frame 21. Optionally, the mounting portion 25 extends towards a side of the first roller 22 away from the second roller 23, so that a moment generated by a suspended object can be reduced under the moment generated by the second roller 23, thereby reducing the inclination or offset of the tackle 2 and reducing friction.

As for the rail 11, as shown in fig. 3 and 6, a rib 111 is provided on a side of the rail 11 facing the first roller 22, the rib 111 extends along the third direction Y, and an end surface of the first roller 22 contacts the rib 111. Through setting up protruding muscle 111, can be spacing first gyro wheel 22 is along the position of self axis direction, reduces coaster 2 the slope or the biased condition appear, improves coaster 2 the problem that the card is dunked, is sent out the noise and is damaged appear in the use. Optionally, as shown in fig. 3 and fig. 6, along the first direction X, the protruding rib 111 is located on a side of the first roller 22 away from the frame 21, in the drawing, taking two of the rail bars 11 as an example, and two of the first roller 22 that are respectively in contact with the two rail bars 11 and have the same rotation axis are first roller groups, then the two protruding ribs 111 are disposed on the outer side of the first roller groups, and the two protruding ribs 111 guide and limit the pulley 2 from two sides. For example, when the trolley 2 is deviated to the left, the rib 111 on the left side applies a rightward acting force to the first roller 22 on the left side, and the motion trajectory of the trolley 2 is corrected. Optionally, along the first direction X, the rib 111 is located on one side of the first roller 22 facing the frame 21, and then the two first rollers 22 of the first roller set are disposed on the outer sides of the two ribs 111, that is, the first roller 22 is located on the outer side of the rib 111, and the two ribs 111 guide and limit the pulley 2 from the middle. For example, when the trolley 2 is deviated to the left, the right rib 111 applies a force to the right first roller 22, so as to correct the motion trajectory of the trolley 2.

With regard to the above-mentioned drive assembly 3, as shown in fig. 1 and 2, the drive assembly 3 is used for driving the trolley 2 to move in translation along the track 1. The driving assembly 3 comprises a belt wheel 31, a transmission belt 32 and a motor 33, the motor 33 is in transmission connection with the belt wheel 31, the belt wheel 31 is in transmission connection with the transmission belt 32, and the transmission belt 32 is connected with the frame 21, so as to drive the pulley 2 to move in a translation manner along the track 1. Optionally, the driving assembly 3 further includes two housings 34, the housings 34 are used for mounting the pulley 31 and the motor 33, and the two housings 34 are respectively disposed at two ends of the track 1 along the third direction Y.

As for the belt wheel 31, as shown in fig. 2 and 7, the belt 32 is sleeved on the belt wheel 31, and the belt wheel 31 is used for driving the belt 32 to run along the extending direction thereof. Optionally, the number of the belt wheels 31 is two, and the two belt wheels 31 are respectively disposed at two ends of the track 1, and the conveyor belt 32 is sleeved on the two belt wheels 31. Optionally, the pulley 31 is provided with anti-slip teeth.

As for the above-mentioned conveyor belt 32, as shown in fig. 2 and fig. 7, the conveyor belt 32 is a soft annular belt, and one position on the conveyor belt 32 is connected to the trolley 2, so that the trolley 2 is driven to move in a translational manner along the track 1 when the conveyor belt 32 runs. Optionally, the conveyor belt 32 is provided with anti-slip teeth.

As for the motor 33, as shown in fig. 2 and fig. 7, the motor 33 is in transmission connection with the pulley 31 and can drive the pulley 31 to rotate, so as to drive the conveyor belt 32 to operate. Optionally, a reduction gear is arranged in the motor 33, so that the torque is increased, and the problem that the pulley 2 is jammed due to insufficient driving force is solved.

The pulley 2 and the slide rail system 100 according to the embodiment of the present invention are provided with the second roller 23, the outer peripheral surface of the second roller 23 is provided with the protruding ring 231, the end surface of the protruding ring 231 can contact with the rail 1, and the rail 1 contacting with the protruding ring 231 can apply a reaction force to the protruding ring 231, thereby reducing the offset or inclination angle of the pulley 2; the second roller 23 and the mounting portion 25 are respectively arranged on two sides of the first roller 22, the second roller 23 can reduce the moment generated by hanging a suspension on the mounting portion 25, and further reduce the inclination or offset of the tackle 2; the third roller 24 is further arranged, the third roller 24 can be in contact with the track 1, the situation that the pulley 2 inclines is reduced, the friction force between the pulley 2 and the track 1 is reduced, the phenomena of blocking, abnormal sound and even damage of the slide rail system 100 in the using process are further improved, the noise is reduced, and the service lives of the pulley 2 and the slide rail system 100 are prolonged.

It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A tackle, comprising:

a frame;

the first roller is rotatably arranged on the frame; and

the second roller is rotatably arranged on the frame, and a convex ring is arranged on the outer peripheral surface of the second roller;

the rotation axes of the first roller and the second roller are parallel to a first direction, the first roller and the second roller are arranged at intervals along a second direction, and the first direction is perpendicular to the second direction.

2. A tackle as claimed in claim 1, wherein the raised ring is located centrally of the second roller in the direction of its own axis.

3. A tackle as claimed in claim 1, wherein the second roller is spaced from at least one of the first rollers in a third direction, the third direction being perpendicular to the first and second directions.

4. A tackle as claimed in claim 1, wherein the tackle further includes a third roller rotatably disposed on the frame, an axis of rotation of the third roller being parallel to the second direction.

5. A tackle as claimed in any one of claims 1 to 4, wherein the tackle includes a mounting portion, one end of which is connected to the frame and the other end of which extends beyond the frame and is adapted to be connected to a suspension.

6. A track system comprising a track and the trolley of any one of claims 1 to 5, the track comprising a rail, the track and the rail extending in a third direction, the rail being disposed between the first roller and the second roller, the rail being in contact with an outer peripheral surface of the first roller and an outer peripheral surface of the second roller, the rail also being in contact with an end surface of the collar; one side of the rail bar, which faces the first roller, is provided with a convex rib, the convex rib extends along the third direction, and the convex rib is in contact with the end face of the first roller.

7. The sliding track system of claim 6 wherein the rib is located on a side of the first roller facing away from the frame or on a side of the first roller facing toward the frame.

8. The slide system of claim 6 or 7 further comprising a drive assembly for driving the sled in translational movement along the track.

9. The slide rail system of claim 8 wherein the drive assembly includes a conveyor belt coupled to the frame and a motor for driving the conveyor belt to move and thereby translate the trolley along the track.

10. The slide rail system according to claim 9, wherein the driving assembly further comprises a pulley, the belt is sleeved on the pulley, the pulley is used for driving the belt to run along the extending direction of the belt, and the motor is in transmission connection with the pulley so as to drive the pulley to move in a translational manner along the rail.

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