CN215777157U

CN215777157U - Curtain rail

Info

Publication number: CN215777157U
Application number: CN202121647562.7U
Authority: CN
Inventors: 孙勇; 俞锡鹏; 汪冰; 牛军伟; 练全达
Original assignee: Ningbo Dooya Mechanic and Electronic Technology Co Ltd
Current assignee: Ningbo Dooya Mechanic and Electronic Technology Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-02-11
Anticipated expiration: 2031-07-19

Abstract

The utility model discloses a curtain rail, which comprises a main rail, an auxiliary rail and a synchronous belt, wherein the main rail and the auxiliary rail are respectively provided with a first end and a second end which are opposite along the length direction, the first end of the main rail is provided with a first driving wheel, the second end of the main rail is provided with a second driving wheel, the auxiliary rail is arranged at one side of the width direction of the main rail in parallel and can move along the length direction of the main rail, the first end of the auxiliary rail is close to the first end of the main rail and is provided with a third driving wheel, the synchronous belt is respectively wound on the first driving wheel, the second driving wheel and the third driving wheel to form a closed loop, the second end of the auxiliary rail is close to the second end of the main rail and is provided with a connecting part which moves along with the auxiliary rail, the connecting part comprises a guide wall component and a guide wheel which are used for supporting and guiding the synchronous belt between the second driving wheel and the third driving wheel, the guide wheel guides the synchronous belt between the third transmission wheel and the first transmission wheel.

Description

Curtain rail

Technical Field

The present invention relates to curtain rails.

Background

Along with the continuous improvement of the technological level, more and more intelligent home furnishings appear in the life of people and are loved by most modern people, and the electric curtain is taken as one of the representatives of the intelligent home furnishing, so that the life of people is facilitated.

The electric curtain realizes the opening and closing of the curtain in an electric control mode, a user can operate the opening and closing of the curtain through wired or wireless control, the electric curtain is very convenient and intelligent to use, the appearance of the electric curtain is basically not different from that of a common curtain, and the electric curtain has the functions of shading and blocking the sun.

The existing electric curtain generally adopts a driving box to drive a transmission belt in a track, so as to drive a suspension arm and a suspension wheel to slide in the track, and realize the opening and closing of the curtain.

Most curtains approach to each other at two sides simultaneously to realize closing, are symmetrical and attractive, have small running distance, and are arranged at two opposite positions on a belt ring in a track according to the principle of realizing moving tracks with the same speed and opposite directions. Because the size of the window of each family is all different basically, current (window) curtain track need carry out the customization according to the size of different windows and make, and is very inconvenient. Therefore, a telescopic curtain rail is provided, for example, a telescopic adjustable electric curtain rail system disclosed in chinese patent with application number 202010531558.8, which comprises a main rail, an auxiliary rail and a sliding block, wherein the two ends of the main rail are respectively provided with a main end and a first connecting end, the two ends of the auxiliary rail are respectively provided with an auxiliary end and a second connecting end, the first connecting end is movably connected with the auxiliary rail, the second connecting end is movably connected with the main rail, the sliding block which can freely move relative to the main rail and the auxiliary rail is arranged between the first connecting end and the second connecting end, and the sliding block is fixed with a belt and circularly reciprocates along the belt.

However, the intermediate reversing wheel and the structural design of the electric curtain guide rail lead to larger integral volume of the curtain guide rail, the driving belt needs to change the transmission direction through the reversing wheels twice, the synchronization performance of the main guide rail and the auxiliary guide rail is poorer, faults are easy to occur, and the pulley is very inconvenient to mount and dismount.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the defects of the prior art are overcome, and the telescopic rail can reduce the whole volume and improve the operation synchronism of two guide rails.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a curtain rail, includes primary rail, accessory track and hold-in range, primary rail and accessory track have respectively and hold along the relative first end of length direction and second, primary rail's first end is equipped with first drive wheel, primary rail's second end is equipped with the second drive wheel, accessory track parallel arrangement is in one of them side of primary rail width direction and can move along primary rail's length direction, accessory track's first end is close to primary rail's first end and is equipped with the third drive wheel, the hold-in range is around establishing on first drive wheel, second drive wheel and third drive wheel respectively and form closed loop, its characterized in that: the second end of vice track is close to the second end of primary rail and is provided with the connecting portion that remove along with vice track, connecting portion are including being used for supporting and guiding hold-in range's guide wall subassembly and leading wheel, the hold-in range between guide wall subassembly guide second drive wheel and the third drive wheel, the hold-in range between leading wheel guide third drive wheel and the first drive wheel.

According to an aspect of the present invention, the guide wall assembly includes a first guide wall and a second guide wall forming a guide groove therebetween, and the timing belt enters the sub rail from the main rail along the guide groove.

Preferably, in order to allow the timing belt to smoothly move, each of the first and second guide walls extends in a direction close to the second end of the sub rail at a position away from the second end of the sub rail, and is close to the main rail at a position away from the second end of the sub rail and is far from the main rail at a position close to the second end of the sub rail, thereby forming the first and second guide walls extending obliquely.

According to another aspect of the utility model, the guide wall assembly includes a first guide wall and a second guide wall, the first guide wall being proximal to the main track and the second guide wall being distal to the main track; the first guide wall is towards the bellied arc of main track, the second guide wall is and keeps away from the bellied arc of main track.

Preferably, in order to allow the timing belt to smoothly move, the first guide wall is provided at an end of the connecting portion away from the sub rail, the second guide wall is provided at an end of the connecting portion close to the sub rail, and the timing belt is guided into the connecting portion by the first guide wall and into the sub rail by the second guide wall.

For guiding the hold-in range better, avoid influence normal operating such as hold-in range deformation between two guide walls, connecting portion are still including the guide block that is used for guiding the hold-in range, the guide block is located the position between first guide wall and the second guide wall, the guide block has two and is located the hold-in range orientation respectively and keeps away from one side of primary rail.

In order to facilitate the support of the timing belt, the timing belt is guided to the guide wheel, and the connecting portion further includes a support wall for supporting the timing belt, the support wall being disposed between the guide wall assembly and the guide wheel.

In order to facilitate the synchronous belt to change the direction changing position between the two rails along with the secondary rail when the secondary rail moves and ensure smooth operation, the side surface of the main rail adjacent to the secondary rail is in an open shape for the synchronous belt to extend between the main rail and the secondary rail.

Compared with the prior art, the utility model has the advantages that: through setting up guide structure at the tip of secondary rail, the guide hold-in range gets into secondary rail and gets into the primary rail from the secondary rail from the primary rail, can reduce the holistic volume of track, only needs hold-in range once to commutate, and two orbital synchronism are better, and the hold-in range operation is smooth and easy.

Drawings

FIG. 1 is a schematic view of a curtain rail according to a first embodiment of the present invention;

FIG. 2 is a top view of a window covering track according to a first embodiment of the present invention;

FIG. 3 is a top view of a window covering track according to a second embodiment of the present invention;

fig. 4 is a top view of a curtain rail according to a third embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and that the directional terms are used for purposes of illustration and are not to be construed as limiting, for example, because the disclosed embodiments of the present invention may be oriented in different directions, "lower" is not necessarily limited to a direction opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Example one

Referring to fig. 1 and 2, a curtain rail includes a main rail 1, a sub-rail 2, and a timing belt 3.

The main track 1 and the auxiliary track 2 are arranged in parallel, the main track 1 and the auxiliary track 2 are both in a strip shape, and the auxiliary track 2 is arranged on one side of the main track 1 in the width direction in parallel. The main track 1 has a first end and a second end opposite to each other in the length direction, a first driving wheel 11 is arranged at the first end, and a second driving wheel 12 is arranged at the second end. One of the first transmission wheel 11 and the second transmission wheel 12 is used as a driving wheel, the other one is used as a driven wheel, and an external driving source, such as an output end of a motor, is connected with the driving wheel to transmit power of the driving source. Alternatively, the drive wheel may be manually driven.

The secondary track 2 also has a first end and a second end in the length direction, the first end of the secondary track 2 is closer to the first end of the primary track 1, and the second end of the secondary track 2 is closer to the second end of the primary track 1. A third transmission wheel 21 is provided at a first end of the sub rail 2, and a connecting portion 4 is provided at a second end of the sub rail 2, also provided at a side surface in the width direction of the main rail 1, for allowing the timing belt 3 to extend between the main rail 1 and the sub rail 2. The sub rail 2 and the connecting portion 4 are linearly movable along the longitudinal direction of the main rail 1.

The synchronous belt 3 is wound on the first driving wheel 11, the second driving wheel 12 and the third driving wheel 13, specifically, one end of the synchronous belt 3 is wound (reversed) from the first driving wheel 11, extends from one side far away from the auxiliary track 2 to the second end of the main track 1, is wound from the second driving wheel 12 after being reversed, extends to the first end of the main track 1, enters the connecting part 4 when passing through the position corresponding to the connecting part 4, then extends to the first end of the auxiliary track 2, is wound from the third driving wheel 21 after being reversed, extends to the second end of the auxiliary track 2, and enters the main track 1 through the connecting part 4 to extend to the first driving wheel 11, so that the synchronous belt 3 forms a closed loop wound on the first driving wheel 11, the second driving wheel 12 and the third driving wheel 21.

The main rail 1 is open at a side adjacent to the sub rail 2 so that the timing belt 3 can enter into the connecting portion 4 and return from the connecting portion 4 into the main rail 1. Other structures of the main track 1 and the auxiliary track 2 are the same as those of the existing curtain track, and are not described in detail herein.

The link 4 includes a guide wall assembly 41 for supporting and guiding the timing belt 3 and a guide roller 42, wherein the guide wall assembly 41 serves to guide the timing belt 3 from the second transmission wheel 12 on the primary rail 1 to the secondary rail 2, and the guide roller 42 is provided at intervals on a side of the guide wall assembly 41 facing the primary rail 1 to guide the timing belt 3 from the third transmission wheel 21 on the secondary rail 2 to the primary rail 1.

The guide wall assembly 41 includes a first guide wall 411 and a second guide wall 412, and each of the first guide wall 411 and the second guide wall 412 extends in a direction close to the second end of the sub rail 2 at a position away from the second end of the sub rail 2, and is close to the main rail 1 at a position away from the second end of the sub rail 2, and is far from the main rail 1 at a position close to the second end of the sub rail 2, thereby forming a first guide wall 411 and a second guide wall 412 extending obliquely. The first guide wall 411 and the second guide wall 412 are spaced apart from each other such that a guide groove 413 is formed between the first guide wall 411 and the second guide wall 412, and the timing belt 3 is inserted into the sub-rail 2 from the main rail 1 along the guide groove 413.

Thereby, the timing belt 3 enters the sub-track 2 along the guide groove 413 and then extends toward the first end of the sub-track 1, bypasses the reversing direction from the third transmission wheel 21 at the first end and then extends toward the second end of the sub-track 2, and bypasses the guide wheel 42 to effect the reversing, enters the main track 1, and extends toward the first end of the main track 1 to reach the first transmission wheel 11.

A support wall 43 is further provided between the guide wall assembly 41 and the guide wheel 42 so as to be able to support a section of the timing belt 3 between the sub-rail 2 and the guide wheel 42. The support wall 43 extends from the junction with the sub-rail 2 in a direction away from the sub-rail 2 and surrounds the outer periphery of the guide wheel 42.

The connecting part 4 may further comprise a housing 41, the above-mentioned guide wall assembly 41, the guide wheel 42 and the support wall 43 being arranged within the housing 41, wherein the guide wheel 42 is rotatably connected with the housing 41 and, in the mounted state, the rotational axis of the guide wheel 42 extends in the vertical direction.

When the position of the auxiliary track 2 relative to the main track 1 needs to be adjusted, the auxiliary track 2 is moved linearly, the total length of the main track 1 and the auxiliary track 2 is changed, and at the moment, the position of the synchronous belt 3 entering the auxiliary track 2 from the main track 1 and the position of entering the main track 1 from the auxiliary track 2 are changed along with the change of the position of the connecting part 4, so that the stretching of the curtain track is realized.

Example two

Referring to fig. 3, in the present embodiment, the difference from the first embodiment described above is that the length of the first guide wall 411 is smaller than the length of the timing belt 3 extending in the sub-rail 2, which is provided only at the end of the connecting portion 4 away from the sub-rail 2, the length of the second guide wall 412 is smaller than the length of the timing belt 3 extending in the sub-rail 2, which is provided only at the end of the connecting portion 4 close to the sub-rail 2, and the first guide wall 411 is close to the main rail 1 while the second guide wall 412 is away from the main rail 1.

The first guide wall 411 has an arc shape protruding toward the main rail 1, the second guide wall 412 has an arc shape protruding away from the main rail 1, and the timing belt 3 is guided by the first guide wall 411 into the connecting portion 4 and is guided by the second guide wall 412 into the sub rail 2.

In the present embodiment, the support wall 43 is located between the guide wheel 42 and the secondary rail 2.

EXAMPLE III

Referring to fig. 4, in the present embodiment, the difference from the second embodiment is that the connecting portion 4 further includes a guide block 44 for guiding the timing belt 3, and the guide block 44 is located at a position between the first guide wall 411 and the second guide wall 412, which is located between the first guide wall 411 and the second guide wall 412 in the length direction of the sub-rail 2. Preferably, it may be located at a position intermediate between the first guide wall 411 and the second guide wall 412, that is, at a position intermediate between the inclined timing belts 3.

The guide block 44 has two blocks, respectively located on the side of the timing belt 3 toward and away from the main rail 1.

Claims

1. The utility model provides a curtain track, includes main track (1), accessory track (2) and hold-in range (3), main track (1) and accessory track (2) have respectively and hold along the relative first end of length direction and second, the first end of main track (1) is equipped with first drive wheel (11), the second end of main track (1) is equipped with second drive wheel (12), accessory track (2) parallel arrangement is at one of them side of main track (1) width direction and can move along the length direction of main track (1), the first end of accessory track (2) is close to the first end of main track (1) and is equipped with third drive wheel (21), hold-in range (3) are around establishing respectively on first drive wheel (11), second drive wheel (12) and third drive wheel (21) and form closed loop, its characterized in that: the second end of vice track (2) is close to the second end of main track (1) and is provided with connecting portion (4) along with vice track (2) removal, connecting portion (4) are including direction wall subassembly (41) and leading wheel (42) that are used for supporting and guide hold-in range (3), hold-in range (3) between direction wall subassembly (41) guide second drive wheel (12) and third drive wheel (21), hold-in range (3) between third drive wheel (21) and first drive wheel (11) are guided in leading wheel (42).

2. The window covering track of claim 1, wherein: the guide wall assembly (41) comprises a first guide wall (411) and a second guide wall (412), a guide groove (413) is formed between the first guide wall (411) and the second guide wall (412), and the synchronous belt (3) enters the auxiliary track (2) from the main track (1) along the guide groove (413).

3. The window covering track of claim 2, wherein: the first guide wall (411) and the second guide wall (412) both extend in a direction close to the second end of the secondary rail (2) from a position far away from the second end of the secondary rail (2), are close to the main rail (1) from a position far away from the second end of the secondary rail (2), and are far away from the main rail (1) from a position close to the second end of the secondary rail (2), so that the first guide wall (411) and the second guide wall (412) extending obliquely are formed.

4. The window covering track of claim 1, wherein: the guide wall assembly (41) comprises a first guide wall (411) and a second guide wall (412), the first guide wall (411) is close to the main track (1), and the second guide wall (412) is far away from the main track (1); the first guide wall (411) is in an arc shape protruding towards the main rail (1), and the second guide wall (412) is in an arc shape protruding away from the main rail (1).

5. The window covering track of claim 4, wherein: the first guide wall (411) is arranged at one end of the connecting portion (4) far away from the auxiliary track (2), the second guide wall (412) is arranged at one end of the connecting portion (4) close to the auxiliary track (2), and the synchronous belt (3) is guided into the connecting portion (4) by the first guide wall (411) and is guided into the auxiliary track (2) by the second guide wall (412).

6. The window covering track of claim 5, wherein: the connecting portion (4) further includes guide blocks (44) for guiding the timing belt (3), the guide blocks (44) being located at positions between the first guide wall (411) and the second guide wall (412), the guide blocks (44) having two and being located on sides of the timing belt (3) toward and away from the main rail (1), respectively.

7. A curtain rail as claimed in any one of claims 1 to 6, wherein: the connecting portion (4) further comprises a supporting wall (43) for supporting the timing belt (3), and the supporting wall (43) is arranged between the guide wall assembly (41) and the guide wheel (42).

8. A curtain rail as claimed in any one of claims 1 to 6, wherein: the side face of the main track (1) adjacent to the auxiliary track (2) is open, and the synchronous belt (3) extends between the main track (1) and the auxiliary track (2).