CN210067936U

CN210067936U - Curtain winding device

Info

Publication number: CN210067936U
Application number: CN201920629858.2U
Authority: CN
Inventors: 吕友助
Original assignee: Xiamen Taiyanghe Industry & Trade Co Ltd
Current assignee: Xiamen Taiyanghe Industry & Trade Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-02-14
Anticipated expiration: 2029-05-05

Abstract

The utility model relates to a curtain winding device, which comprises a spring winding box, a positioning component and a rotating shaft, wherein a spiral spring is arranged in the spring winding box, the positioning component comprises a rotary seat, a rail seat and a ball, the outer wall surface of the rail seat is concavely provided with a first rail and a second rail which are communicated with each other, the ball can be movably arranged between the axial groove of the rotary seat and the rail seat, when the rotary seat rotates, the ball is controlled to move along the axial groove by the axial groove and is switched to move in the first rail and the second rail by matching with a guide block; one end of the rotating shaft is movably arranged in the center of the spiral spring in the box body in a penetrating mode and fixedly connected with the inner end portion of the center of the spiral spring, and the other end of the rotating shaft is movably arranged in the rail seat in a penetrating mode and connected with the rotating seat in a driving mode, so that the problem that an existing curtain transmission device and a curtain are difficult to assemble is solved.

Description

Curtain winding device

Technical Field

The utility model relates to a fittings for curtains field specifically is to relate to a (window) curtain roll-up device.

Background

In daily life, the automatic rolling-back type curtain has the characteristics of small occupied space and convenience in use, when the curtain is not used, the curtain is rolled back in the box, and when the curtain or the window screening needs to be used, the curtain or the window screening is pulled out and fixed. For example, CN102733746B discloses a driving device of a window curtain, which comprises a frame, a roller tube, a main spring, a spring shaft, an oil pressure damper, a torsion spring, a positioning set, and a curtain set; after the curtain cloth of the curtain cloth group is pulled downwards to any height, as long as the application of force is stopped, the main spring which originally can rotate reversely can be stopped by the positioning group to stop the rotation of the main spring, so that the curtain cloth can be stopped at any height, and no matter where the curtain cloth is stopped, the curtain cloth is immediately released after the curtain cloth is pulled downwards, so that the positioning group can not stop the rotation of the main spring any more, then the main spring is connected with the roller pipe to rotate, and the curtain cloth is automatically rolled upwards to be positioned, thereby achieving the purposes of stopping the curtain cloth at any height and easily automatically rolling the curtain cloth upwards.

Although the transmission device of the curtain realizes the purpose that the curtain cloth of the curtain stops at any height and can be automatically rolled upwards easily, the main spring for providing the rolling force needs to penetrate into the rolling pipe, and the inner end of the main spring is fixedly arranged with the rolling pipe, so that when the transmission device of the curtain and the curtain are assembled, the assembly of the main spring is difficult, the volume of the transmission device of the curtain is large, and a large installation space needs to be occupied.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a curtain winding device to solve the problem of difficult assembly between the transmission device of the existing curtain and the curtain.

The specific scheme is as follows:

a window covering roller assembly, comprising:

the spring coiling box comprises a box body and a spiral spring positioned and installed in the box body, and the outer end part of the spiral spring is fixedly connected with the box body;

the positioning assembly comprises a rotating seat, a track seat and a ball, wherein the rotating seat is hollow and tubular, an axial groove is concavely formed in the inner wall surface of the rotating seat, the track seat is arranged in the rotating seat in a penetrating manner, two communicated first tracks and second tracks are concavely formed in the outer wall surface of the track seat, a plurality of guide blocks are arranged between the two tracks, the ball is movably arranged between the axial groove of the rotating seat and the track seat, and when the rotating seat rotates, the ball is controlled to move along the axial groove through the axial groove and is switched to move in the first tracks and the second tracks by matching with the guide blocks;

and one end of the rotating shaft is movably arranged in the center of the spiral spring in the box body in a penetrating manner and is fixedly connected with the inner end part at the center of the spiral spring, and the other end of the rotating shaft is movably arranged in the track seat in a penetrating manner and is in driving connection with the rotating seat.

Further, defining: when the curtain is pulled out, the rotating seat rotates clockwise, and when the curtain is rolled up, the rotating seat rotates anticlockwise; the outer wall surface of the track seat is provided with an arc section track which is concavely arranged on the radial direction of the track seat and switching areas which are communicated with two ends of the arc section track, a guide block which divides the switching areas into a third track and a fourth track is arranged in each switching area, the third track is provided with a notch which is concavely arranged in the anticlockwise direction, the third track and the arc section track form a first track, and the fourth track and the arc section track form a second track; when the rotating seat rotates clockwise, the first track is provided with a guide surface for guiding the ball to the first track, and when the rotating seat rotates anticlockwise, the second track is provided with a guide surface for guiding the ball to the second track.

Furthermore, the track seat is of a hollow tubular structure, a torsion spring is sleeved in the track seat, one end of the torsion spring is fixedly arranged on the track seat, and the other end of the torsion spring is fixedly arranged on the box body.

Furthermore, the box body is provided with a shaft sleeve part extending into the track seat, and the torsion spring is sleeved on the outer wall surface of the shaft sleeve part.

Furthermore, a plurality of ribs which are convexly arranged on the axial direction of the rotating seat are arranged on the outer wall surface of the rotating seat, and the ribs are in interference fit with the inner hole wall of the rolling rod of the curtain.

Furthermore, the box body is also provided with a fixing part for fixing the box body on an installation object.

Compared with the prior art, the utility model provides a curtain roll-up device has following advantage: the utility model provides a (window) curtain roll-up device has removed the main spring, and adopts the spiral spring as the application of force spare of restoring force, provides the energy of accumulating for the spiral spring when making the roating seat rotate through the pivot, need not to fix the main spring to the assembly step in the roll-up pole of (window) curtain, and the roll-up pole of (window) curtain can directly cup joint and fix on the roating seat, and the installation is simple and convenient.

Drawings

Fig. 1 shows a schematic perspective view of a curtain roll-up device.

Fig. 2 shows an exploded view of the curtain furling apparatus.

Figure 3 shows a cross-sectional view of a curtain roller.

Fig. 4 shows a perspective view of the rail seat of the curtain rolling device.

Fig. 5 shows a schematic view of the track base of the curtain roller in a first view.

Fig. 6 shows a schematic view of the track base of the curtain roller in a second view.

Fig. 7 shows a schematic view of the rail seat of the curtain roller in a third view.

Fig. 8 shows a schematic view of the balls moving on the rail housing when the rotary housing rotates clockwise.

Fig. 9 shows a schematic view of the movement of the balls on the rail seat when the swivel seat is fixed with respect to the rail seat.

Fig. 10 shows a schematic view of the ball moving on the rail housing when the rotary housing is rotated counterclockwise.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

As shown in fig. 1-3, the curtain winding device provided by the present invention comprises a spring case 1, a positioning assembly 2 and a rotating shaft 3.

Referring to fig. 1-3, the spring case 1 includes a case body and a spiral spring 10 positioned and installed in the case body, and an outer end 100 of the spiral spring 10 is fixedly connected with the case body. The box body of the spiral spring box 1 in this embodiment is composed of a bottom box 12 and a box cover 14, the box cover 14 is locked on the bottom box by screws to form a closed cavity, the bottom box 12 is provided with a circular peripheral wall 120, the spiral spring 10 is located in a space completed by the peripheral wall 120, and the peripheral wall 120 is provided with a groove 122 for fixedly connecting the outer end 100 of the spiral spring 10.

Referring to fig. 1-3, the positioning assembly 2 includes a rotating base 20, a track base 22 and a ball 24, the rotating base 20 is hollow and has an axial groove 200 formed on an inner wall surface of the rotating base 20. Here and in the following, axial, radial and axial are described with reference to the shaft 3.

Referring to fig. 4, the rail seat 22 is inserted into the rotary seat 20, and the outer wall surface of the rail seat 22 is concavely provided with a first rail 220 and a second rail 222 which are communicated with each other, a plurality of guide blocks 224 are arranged between the two rails, the balls 24 are movably arranged between the axial grooves 200 of the rotary seat 20 and the rail seat 22, when the rotary seat 20 rotates, the balls 24 are controlled by the axial grooves 200 to move along the axial grooves 200, and are switched to move in the first rail 220 and the second rail 222 in cooperation with the guide blocks 224, and how to switch is described in detail below.

Referring to fig. 1-3, one end of the rotating shaft 3 movably penetrates through the center of the spiral spring 10 in the box body and is fixedly connected to an inner end 102 at the center of the spiral spring 10, and the other end movably penetrates through the track seat 22 and is drivingly connected to the rotating seat 20. In this embodiment, specifically, one end of the rotating shaft 3 fixedly connected to the spiral spring 10 has a gap for fixedly connecting the inner end 102 of the spiral spring 10, the other end of the rotating shaft 3 in driving connection with the rotating base 20 is a polygonal prism disposed in a non-circular manner, the rotating base 20 has a polygonal through hole 202 disposed in a matching manner, and the polygonal prism disposed at the other end of the rotating shaft 3 penetrates through the polygonal through hole 202, so that the rotating base 20 and the rotating shaft 3 rotate synchronously.

Referring to fig. 4-7, defined herein: when the window curtain is drawn out, the rotating seat 20 rotates clockwise, the ball 24 moves clockwise along with the rotating seat 20, when the window curtain is rolled up, the rotating seat 20 rotates counterclockwise, and the ball 24 moves counterclockwise along with the rotating seat 20. In the present embodiment, both clockwise and counterclockwise directions are viewed from the outer end to the inner end of the rail seat 22, and the right side of fig. 4-7 is the outer end of the rail seat 22, and the left side is the inner end.

Referring to fig. 5, the outer wall surface of the rail seat 22 has a circular arc track 226 recessed in the radial direction of the rail seat 22 and switching regions communicating with both ends of the circular arc track 226. The circular arc segment track 226 serves as a common track for the first track 220 and the second track 222.

The switching region has a guide block 224 therein dividing the switching region into a third track 227 and a fourth track 228, the third track 227 and the arc segment track 226 forming a first track 220, and the fourth track 228 and the arc segment track 226 forming a second track 222.

When the ball 24 moves clockwise, one end of the ball 24 entering the arc track 226 from the switching area is the first end 2260 of the arc track 226, and the other end of the ball 24 entering the switching area from the arc track 226 is the second end 2262.

The guide block 224 is disposed at the middle of the switching region, dividing the switching region into a third track 227 located at the left side of the switching region and a fourth track 228 located at the right side of the switching region, wherein the third track 227 is a track having a continuous inflection point, and the fourth track is a track having no continuous inflection point. The guide block 224 has a first guide surface 2240 facing the second end 2262 of the arc track 226 and a second guide surface 2242 located on the side of the first end 2260 of the arc track 226, the first guide surface 2240 and the second guide surface 2242 form a third track with the left sidewall of the switching area, and the second guide surface 2242 has a notch 2246 recessed toward the second end 2262 of the arc track 226. The guide block 224 also has a third guide surface 2244 that forms a fourth track with the switching region right side wall.

The junction of the switching region and the first end 2260 of the circular arc segment track 226 also has a flange 2264 projecting to the right, the flange 2264 having a fourth guide surface 2266 for guiding the ball 24 into the fourth track 228 when the ball 24 moves counterclockwise.

When the ball 24 moves along the first track 220 clockwise, the ball 24 is guided by the left sidewall of the switching region and the first and

second guide surfaces

2240 and 2242 of the guide block 224 to move along the third track 227, and enters into the arc track 226 from the first end 2260 of the arc track 226 and enters into the third track 227 from the second end 2262 of the arc track 226, so that the ball 24 continuously travels on the first track 220.

When the ball 24 moves along the first track 220 to the notch 2246 of the guide block 224, the ball 24 moves into the notch 2246, and the ball 24 cannot move counterclockwise.

When the ball 24 moves along the second track 222 counterclockwise, the ball 24 is moved from the first end 2260 of the circular arc track 226 into the fourth track 228 by the fourth guiding surface 2266 of the flange 2264, and is moved from the fourth track 228 into the second end 2262 of the circular arc track 226 by the third guiding surface 2244 of the guiding block 224, so that the ball 24 continuously travels on the second track 222.

In the above description, only one switching region is provided on the track seat 22, and a single switching region can only realize that the ball 24 has one limit when the track seat 22 moves for one turn, but in practical applications, a plurality of switching regions can be provided, and the ball 24 can have a plurality of limits when the track seat 22 moves for one turn through a plurality of switches, so as to realize the effect of follow-up stop.

When the curtain rolling device provided by the utility model is used, the rolling rod of the curtain is directly sleeved and fixed on the rotary seat of the curtain rolling device, when the curtain is to be put down, the lower end of the curtain is held to be pulled down, when the ball 24 moves to the notch 2246 of the guide block 224, the curtain can be stopped at the current height immediately as long as the force application is stopped. When the curtain cloth is required to be rolled, the curtain cloth can be automatically rolled upwards to be positioned only by slightly pulling down the curtain cloth and then releasing the curtain cloth.

Referring to fig. 1-7, the specific process of controlling the above-mentioned actions is that when the curtain is pulled downwards, the curtain drives the winding rod to rotate clockwise through the connecting rope, the winding rod drives the revolving base 20 which is sleeved and fixed to rotate, the revolving base 20 drives the spiral spring 10 to rotate through the rotating shaft 3, and therefore the spiral spring 10 starts to roll along with the rotating shaft 3 to accumulate energy. During the curtain cloth pulling process, once the force applied to the curtain cloth is stopped, the components of the positioning component 2 will immediately interact (regarding the component action of the positioning component 2, the following detailed description) so that the rotating base 20 and the rail base 22 cannot rotate relatively, and the curtain cloth can be stopped at the current height. When the curtain is pulled down slightly and then released, the components of the positioning component 2 interact again (regarding the component action of the positioning component 2, which will be described in detail later), so that the rotating base 20 and the track base 22 can rotate relatively, at this time, the spiral spring 10 starts to release the energy accumulated before and starts to rotate reversely, and the curtain is wound upwards until the spiral spring 10 returns to the initial state, and the curtain also returns to the uppermost end at the initial state.

The actions of the components of the positioning assembly 2 in the above-described process are described in detail below. First, the balls 24 are disposed between the axial grooves 200 of the rotary base 20 and the tracks of the track base 22, and whether the rotary base 20 and the track base 22 can rotate relative to each other is determined by the positions of the balls 24 therein and the relationship between the balls and the guide blocks.

For the definition, the upper and lower directions in fig. 8-10 represent the counterclockwise direction and the clockwise direction of the rail base 20, respectively.

Referring to FIG. 8, when the curtain is pulled down, the roll-up spindle drives the rotary base 22 to rotate clockwise relative to the track base 22, and the ball 24 moves along the first track 220 with the rotary base 22. As shown in fig. 8, the initial position of the ball 24 is on the arc track 226, firstly the ball 24 moves upward along the arc track 226, the right end of the guiding block 224 protrudes out of the right side opposite to the arc track 226, and the first guiding surface 2240 is biased upward to the left, when the ball 24 enters the switching region from the second end 2262 of the arc track 226, the ball enters the third track 227 due to the guiding action of the first guiding surface 2240 of the guiding block 224, and then enters the arc track 226 from the first end 2260 of the arc track 226 along the third track 227, and this cycle is repeated continuously, and the rotary base 20 is thereby rotated clockwise relative to the track base 22 continuously. The direction of movement of the balls 24 is shown by the direction of the arrows in figure 8.

As shown in fig. 9, when the ball 24 moves along the third track 227 to the notch 2246 of the guide block 224, the ball 24 moves into the notch 2246, if the curtain is released, the spiral spring 10 applies a counterclockwise force to the rotary base 20, but the ball 24 is trapped in the notch 2246 and cannot move downward, so the ball 24 catches the axial groove 200, and the rotary base 20 cannot rotate counterclockwise with respect to the track base 22, thereby stopping the curtain at the current height.

As shown in fig. 10, to automatically wind up the curtain, only a slight downward pulling is needed to wind down the curtain, and at this time, the balls 24 slightly move upward to be disengaged from the notches 2246 and enter the arc track 226 from the first end 2260 of the arc track 226. Then the curtain is released, at this time, the spiral spring 10 applies a counterclockwise force to the rotary base 20, so that the ball 24 moves downward, and when moving downward, the ball enters into the fourth track 228 by the guiding action of the fourth guiding surface 2266 of the flange 2264, and enters into the second end 2262 of the arc segment track 226 from the fourth track 228 by the action of the third guiding surface 2244 of the guiding block 224, so that the ball 24 continuously travels on the second track 222, and the rotary base 20 is continuously rotated counterclockwise relative to the track base 22 until the spiral spring 10 returns to the initial state, and the curtain also returns to the initial uppermost end.

Compared with the transmission device of the curtain in the prior art, the utility model provides a curtain roll-up device removes the main spring and adopts the spiral spring as the application of force spare of restoring force, provides the energy of accumulating for the spiral spring when making the roating seat rotate through the pivot, and this curtain roll-up device structure is small and exquisite and the roll-up pole of curtain can directly cup joint and fix on the roating seat, and the installation is simple and convenient.

As a preferable scheme of this embodiment, referring to fig. 2 and 3, the rail seat 22 is a hollow tubular structure, a torsion spring 40 is sleeved in the rail seat 22, one end of the torsion spring 40 is fixed to the rail seat 22, and the other end is fixed to the box cover 14. The torsion spring 40 provides a torsion force to the rail seat 22 to prevent the rail seat 22 from rotating with the rotary seat 20. In order to prevent the rail seat 22 from rotating with the rotary seat 20, the rail seat 22 can be directly fixed to the box body, but the torsion spring 40 not only prevents the same from rotating with the rotary seat 20, but also when the curtain cloth is automatically rolled up, the torsion spring 40 can provide a buffer effect for the counterclockwise rotation of the rotary seat 20, so as to play a role of the oil pressure damper in the transmission device of the existing curtain, and prevent the injury to the operator caused by the excessively fast automatic rolling-up speed of the curtain.

Preferably, referring to fig. 2 and 3, the box cover 14 has a sleeve portion 140 extending into the rail seat, and the torsion spring 40 is sleeved on an outer wall surface of the sleeve portion 140 to facilitate assembly of the torsion spring 40.

As another preferable scheme of this embodiment, referring to fig. 2, the outer wall surface of the rotating base 20 has a plurality of ribs 202 protruding from the axial direction of the rotating base 20, and the ribs 202 are disposed in interference fit with the inner wall surface of the roll-up rod of the curtain, so that the roll-up rod of the curtain can be directly fixed on the rotating base 20, so that the curtain roll-up device can be assembled to the curtain roll-up rod.

As still another preferable mode of the present embodiment, referring to fig. 2 and 3, the box cover 14 further has a fixing portion 142 for fixing the coil spring box 1 to an installation object. When the curtain is installed, the spring box 1 is fixed on a wall, and then the rolling rod of the curtain is sleeved on the rotating seat 20, so that the installation of the curtain rolling device and the assembly of the curtain can be completed.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A curtain roll-up device is characterized by comprising:

2. A curtain roller assembly according to claim 1 characterised by defining: when the curtain is pulled out, the rotating seat rotates clockwise, and when the curtain is rolled up, the rotating seat rotates anticlockwise; the outer wall surface of the track seat is provided with an arc section track which is concavely arranged on the radial direction of the track seat and switching areas which are communicated with two ends of the arc section track, a guide block which divides the switching areas into a third track and a fourth track is arranged in each switching area, the third track is provided with a notch which is concavely arranged in the anticlockwise direction, the third track and the arc section track form a first track, and the fourth track and the arc section track form a second track; when the rotating seat rotates clockwise, the first track is provided with a guide surface for guiding the ball to the first track, and when the rotating seat rotates anticlockwise, the second track is provided with a guide surface for guiding the ball to the second track.

3. A curtain roller assembly according to claim 1, wherein: the track seat is of a hollow tubular structure, a torsion spring is sleeved in the track seat, one end of the torsion spring is fixedly arranged on the track seat, and the other end of the torsion spring is fixedly arranged on the box body.

4. A curtain roller assembly according to claim 3, wherein: the box body is provided with a shaft sleeve part extending into the track seat, and the torsion spring is sleeved on the outer wall surface of the shaft sleeve part.

5. A curtain roller assembly according to claim 1, wherein: the outer wall surface of the rotating seat is provided with a plurality of ribs which are convexly arranged on the axial direction of the rotating seat, and the ribs are arranged in interference fit with the inner hole wall of the rolling rod of the curtain.

6. A curtain roller assembly according to claim 1, wherein: the box body is also provided with a fixing part for fixing the box body to an installation object.