CN201034011Y - Rolling device for curtain pull rope - Google Patents

Abstract

The utility model relates to a retracting device for a curtain pull cord, which comprises a plurality of double-layer guide wheels and a plurality of S-shaped elastic reels arranged in a row. Two adjacent guide wheels are meshed with each other by tooth edges, and each guide wheel has a pull cord wound thereon, so that a plurality of pull cords can be operated synchronously. Each S-shaped elastic reel is fixed between two adjacent guide wheels and also provides elastic force to balance the weight of the curtain, so that the pull cord can be longitudinally installed on the curtain to control the extension and contraction of the curtain.

Description

Curtain cord retractor

technical field

The utility model relates to a retracting device for a curtain cord. The retracting device for a curtain cord comprises a plurality of double-layer guide wheels arranged in rows and a plurality of S-shaped elastic reels. Two adjacent guide wheels are meshed with each other by toothed edges, and each guide wheel has a pull rope wound thereon, so a plurality of pull ropes can be operated synchronously. Each S-shaped elastic reel is fixed between two adjacent guide wheels and also provides elastic force to balance the weight of the curtain accordingly. Therefore, the pull cord can be installed longitudinally on the curtain to control the state of expansion and contraction of the curtain.

Background technique

The known design of the retracting device for the curtain pull cord, in order not to expose the internal device to the outside of a housing, the retracting device must have a neat appearance and must be safe to operate.

In the known retracting devices, all must be specially designed to retract a series of drawstrings that match the width of the shade, and to maintain the balance of the operation of the shade, because wider shades require more drawstrings to keep the shade in place. In a horizontal and properly controlled stretch. Wherein, the weight of the curtain is supported by the elastic force provided by a plurality of S-shaped elastic reels installed between two adjacent guide wheels. Thus, the user can pull and stop the shade at any desired position.

In the known structural design of the retracting device, it basically includes a plurality of guide wheels for the pull cord and a plurality of guide wheels for the S-shaped elastic reel. Therefore, each guide wheel has only one function, and is selectively combined with a pull cord or an S-shaped elastic reel. Because of this disadvantage, the guide wheels are all arranged in a row in the middle and two winding guide wheels are provided at the ends, so the known retracting device can only control two pull cords to operate the curtain. If the curtain width is large and more pull cords are required, multiple sets of retracting devices are required. Therefore, the cost of assembling the curtain will increase significantly, all of which are caused by the poor design of the known retracting device.

Curtains equipped with automatic retractors have no exposed operating ropes in appearance, so they are not only more beautiful but also have safety features. Therefore, it is a structural technology that is often and widely used in the structural design of curtains.

As we all know, the number of pull ropes drawn by the automatic retractor is set according to the width of the curtain to maintain a certain balance. The wider the curtain body, the more pull ropes must be installed to maintain its horizontal state and tension. , while the weight of the curtain body is balanced by the elastic force of the S-shaped shrapnel reel inside the automatic retractor, so the user can freely pull the curtain body to any position and stop the lifting height of the curtain body.

In the structural design of the known automatic retractor, the guide wheel is mainly divided into a guide wheel with a stay cord guide wheel and an S-shaped elastic reel, that is, the guide wheel can only be used for a single purpose, and after the stay cord is provided, it will There is no other space for setting the S-shaped shrapnel reel; if the S-shaped shrapnel reel is set, the pull cord can no longer be wound. Therefore, in the composition of the known automatic retractors, there are mainly internal guide wheels for the S-shaped reel. The shrapnel reel is set, and the two outermost guide wheels are set in the state of the pull cord, so each group of automatic retractors can only set up two pull cords to pass through the curtain body at most, so it is often seen in known curtains More than two sets of automatic retractors are arranged therein, which not only increases the cost, but also increases a lot of weight, which is actually the damage caused by structural design defects.

Utility model content

The purpose of the utility model is to provide a retracting device for a curtain drawstring to solve the defects in the known technology.

In order to achieve the above purpose, the retracting device of the curtain pull cord provided by the utility model includes:

Two boards;

A plurality of guide wheels are sandwiched between two plates, each guide wheel has a disc with a toothed edge, a rolling bar is formed on one side of the disc to selectively retract a pull cord, and a shaft is formed on the other side of the disc; and

An S-shaped elastic reel is installed between two adjacent guide wheels; wherein, the tooth edges of the plurality of guide wheels are engaged one by one to rotate synchronously.

The retracting device of the curtain pull cord, wherein the S-shaped elastic reel has an end passing through a drum fixed on a guide wheel of two adjacent guide wheels, and is wound on the drum, and the drum The wheel is rotatably mounted on the shaft body of the guide wheel.

The retracting device of the curtain pull cord, wherein the S-shaped elastic reel has the other end passing through a drum fixed on the other of the two adjacent guide wheels, and is wound on the drum , the drum is rotatably mounted on the shaft of the other guide wheel.

Can know by above-mentioned structure, the utility model will produce following benefit after implementing:

The retracting device for curtain pull cords provided by the utility model can operate multiple pull cords synchronously, smoothly and effectively with only one set.

The utility model provides a retracting device for curtain pull cords, which can reduce its manufacturing cost.

Description of drawings

Fig. 1: is the appearance diagram of the curtain of the present utility model.

Fig. 2: is the structural diagram of the guide wheel of the present utility model.

Fig. 3: It is the structural appearance diagram of the retracting device of the present invention.

Fig. 4: It is a top view state diagram of the retracting device of the present utility model.

Fig. 5: It is the front view state diagram of the retracting device of the present utility model.

Fig. 6: It is a configuration state diagram of a plurality of guide wheels in the retracting device of the present invention.

Fig. 7: It is a front view of the retracting device of the present invention in a configuration state of many guide wheels.

Detailed ways

Further benefits and advantages of the present invention will become apparent upon careful reading of the detailed description with reference to the accompanying drawings.

The utility model is a retracting device for a curtain pull cord, which comprises a plurality of double-layer guide wheels 2 arranged in rows, a plurality of S-shaped elastic reels 23, and a plurality of selective shaft wheels. Two adjacent guide wheels 2 are engaged with each other by engaging edges 21, and each guide wheel 2 has a stay cord 22 which is wound around the stay cord 22 by the S-shaped elastic reel 23 relative to the other corresponding guide wheel 2. On, so a plurality of pull cords 22 can be operated synchronously. Each S-shaped elastic reel 23 is fixed between two adjacent guide wheels 2 and also provides elastic force to balance the weight of the curtain. Therefore, the pull cord 22 can be installed longitudinally on the curtain to control the expansion and contraction of the curtain.

Please refer to Fig. 1, a first embodiment of the retracting device 20 of the curtain drawstring is suitable for installing on an upper rail 101 for a blinds curtain combination 10 as shown (other curtains are also applicable) to extend and The plurality of vanes 3 on the venetian blind assembly 10 are retracted. The retracting device 20 includes two boards 1 installed on the upper rail 101 , and a plurality of guide wheels 2 are rotatably sandwiched between the two boards 1 . As shown in FIG. 2, each guide wheel 2 has an intermediate disc with a toothed edge 21 to engage with the adjacent guide wheels 2 to rotate synchronously. A rolling bar (not numbered) is formed on one side of the middle disc to accommodate a pull cord 22, and a shaft (not numbered) is formed on the other side of the middle disc. Therefore, when the guide wheel 2 is sandwiched between the two plate bodies 1, the two compartments are also defined so that the guide wheel 2 becomes a double layer. As shown in Figure 3, the two ends of an S-shaped elastic reel 23 are installed on two adjacent guide wheels 2 and provide elastic force to balance the weight of the shutter blade 3, so the user can stop the curtain at any desired position. Preferably, as shown in Figures 3 to 5, when the elastic reel 23 is S-shaped, the stay cords 22 on two adjacent guide wheels 2 are respectively wound clockwise and counterclockwise so as to be installed in parallel on the blades. 3 on.

From the aforementioned components, each guide wheel 2 of the retracting device 20 selectively receives the pull cord 22 and interacts with an adjacent guide wheel 2 through the S-shaped elastic reel 23 . In addition, the toothed rim 21 on the middle disc ensures that the interactive rotation between the guide wheels 2 can be stable and effective.

The second embodiment of the retracting device of the curtain pull cord is shown in Fig. 6 and Fig. 7, which includes six guide wheels 2 and three S-shaped elastic reels 23 to increase the pull cord 22, when the width of the blade 3 increases. When the pull cord 22 on the retracting device 20 extends longitudinally and strings the blades 3 with proper spacing, the blades 3 are moved synchronously to maintain balance during operation. Because the elastic force of the S-shaped elastic reel 23 on the pair of guide wheels 2 corresponds to the weight of the shutter blade 3, the pull cord 22 is pulled to drive the pair of guide wheels 2 to make S by the interaction of the teeth 21. The type elastic reel 23 is deformed to provide elastic force. Therefore, each pull cord is stretched and contracted by the elastic force provided by the S-shaped elastic reel 23 . In addition, the elastic force of the S-shaped elastic reel 23 also provides positioning efficiency for the blade 3 at the same time, because the elastic force corresponds to the weight of the shutter blade 3 .

In addition, each S-shaped elastic reel 23 on the pair of guide wheels 2 has an end mounted on a drum 231 , and the drum 231 is pivotally arranged on the shaft of a guide wheel 2 . The end of the S-shaped elastic reel 23 passes through the drum 231 to be fixed on the corresponding guide wheel 2, and is further wound on the drum 231, because the drum 231 is mounted on the guide wheel for free rotation. 2, the S-shaped elastic reel 23 can be automatically adjusted during operation so that the elastic force is equal to the weight of the shutter blade 3.

When the venetian curtain assembly 10 is raised or lowered, the S-shaped elastic reel 23 not only provides transmission efficiency to pull or release the pull cord 22 , but also provides an elastic force to maintain the balance of the louver blade 3 .

According to the above description, the retracting device 20 for the curtain cord 22 has the following advantages:

1. Each guide wheel 2 can have an S-shaped elastic reel 23 and a stay cord 22 to have two functions and increase the number of adjustment guide wheels 2, especially the variability of the stay cord 22 quantity. Unlike the known retracting device with only two pull cords, the retracting device in the present invention selectively has a plurality of pull cords 22 corresponding to the width of the curtain. Therefore, only one set of retracting devices 20 is required for the curtain and the product cost is thus reduced.

2. The guide wheels 2 in the retracting device 20 are the same, so the process and combination of the retracting device 20 are simplified and standardized to save more cost and time.

3. The middle disk with the toothed edge 21 makes the transmission of the guide wheel 2 stable so as to wind up a plurality of stay ropes 22 synchronously, so as to avoid the stay ropes 22 and other stay ropes 22 from being entangled in the upper rail 101 .

Although the present utility model is described on the preferred implementation form with certain program specificity, it can be understood that the preferred implementation form of the present utility model is only presented as an example, and many aspects in structure, combination, Changes in detail in the arrangement of parts can still be claimed without departing from the spirit or scope of the invention.

Claims (3)

1. the retracting device of a curtain rope is characterized in that, includes:

Two plate bodys;

A plurality of guide wheels are located between two plate bodys, and each guide wheel has a disk that has a tip edge, one side that a scroll bar is formed on disk and is formed on the another side of disk optionally to fold a stay cord and an axis body; With

One S type elasticity reel is installed between adjacent two guide wheels; Wherein, the tip edge of these a plurality of guide wheels is meshed one by one with synchronously rotation.

2. the retracting device of curtain rope according to claim 1, it is characterized in that, wherein this S type elasticity reel has an end and passes a drum that is fixed on the guide wheel of adjacent two guide wheels, and winding is on drum, and this drum is installed on the axis body of this guide wheel rotationally.

3. as the retracting device of curtain rope as described in the claim 2, it is characterized in that, wherein this S type elasticity reel has another end and passes a drum that is fixed on another guide wheels of adjacent two guide wheels, and winding is on this drum, and this drum is installed on the axis body of this another guide wheel rotationally.

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