TW202203821A - Curtain and position limiting device thereof - Google Patents

Abstract

A curtain is provided. The curtain includes a curtain rail, a middle rail, a bottom rail, a curtain body, a first transmission module, a second transmission module and a position limiting device for curtain. The curtain body is disposed between the curtain rail and the bottom rail. The first transmission module and the second transmission module are respectively disposed in the curtain rail, and the first transmission module and the second transmission module are respectively used to control the middle rail and the bottom rail to up or down. The position limiting device for curtain is disposed in the curtain rail, and the position limiting device for curtain is connected between the first transmission module and the second transmission module and the position limiting device for curtain is used to limiting and controlling to the distance of curtain up or down. In addition, a position limiting device for curtain is also provided.

Description

Curtains and Curtain Limiting Devices

The invention relates to a curtain and a curtain limiting device, in particular to a curtain and a curtain limiting device applied to a two-section curtain.

Curtains are a common household equipment. Generally speaking, the purpose of curtains is not only to block sunlight, but also to provide shelter in time to provide necessary privacy in the house, or even provide decoration. There are many types of curtains, such as Venetian Blinds, Roman Shades or Cellular Shades. Venetian blinds are made up of slender strips of material that look like blades. Through the pull cord, the angle of the blinds can be changed, thereby controlling the intensity of lighting. Roman blinds are provided with a plurality of cross bars at appropriate distances from the fabric. These cross bars increase the weight of the fabric of the Roman blind, thereby preventing the fabric from fluttering due to wind. Honeycomb curtain, also known as organ curtain, is a newly developed structure for curtain energy saving in recent years. A unique hollow honeycomb is designed in the curtain structure, so that it has the effect of heat insulation and heat preservation, which can maintain the indoor constant temperature and reduce the damage caused by the external environment. Indoor temperature changes drastically.

From the curtains that open and close in the up and down direction, a two-section curtain is gradually derived. This kind of two-section curtain usually has an upper curtain and a lower curtain that are independently controlled. When the light can penetrate, the user can adjust the area of the upper curtain and the lower curtain to cover the window according to the needs, so as to meet the needs of the user.

Generally speaking, curtains are provided with drawstrings, and through the operation of the drawstrings, the curtains can be pulled up or down, so that the curtains can be folded or unfolded. In the two-stage curtain, the first transmission module and the second transmission module can individually control the lifting strokes of the middle rail and the lower rail, so as to achieve the purpose of independent control of the upper curtain and the lower curtain.

When the upper curtain and the lower curtain are operated separately to control the opening and closing, under certain conditions, there is a problem of knotting of the cord. For example, when both the upper curtain and the lower curtain are in the unfolded state, the lower rail is controlled to rise to close the lower curtain by controlling the second transmission module. If the lower curtain is completely closed, continue to control the second transmission module. , and then let the lower rail continue to rise, causing the lower rail to contact or even push to the middle rail, and then force the middle rail and the upper curtain to fold upward, that is, the middle rail is not controlled by the first transmission module that controls the middle rail. The ascent of the rail. Since the rope in the first transmission module controlling the middle rail is not rolled at this time, the rope pulling the middle rail is in a slack state, and the next time the user rolls the wire wheel in the first transmission module , the rope in this slack state will be randomly and irregularly wound on the spool, and then overlap and knot. What's more, the spool cannot be rolled, and the probability of the transmission module being stuck and malfunctioning is increased. It can be seen that the existing two-stage curtains in the prior art have the problems of overlapping and entanglement of the cords during the process of unfolding or folding the curtains. The two-section curtains in the prior art still cannot meet the needs of users.

Therefore, how to improve and provide a curtain and a curtain limiting device to improve the above-mentioned problems will be an issue to be solved by the industry.

The invention provides a curtain and a curtain limiting device. The curtain limiting device is used to limit and control the lifting stroke of the curtain, which can not only prevent the ropes on the winding device from overlapping and winding during the process of controlling the curtain to unfold or fold .

An embodiment of the present invention provides a curtain, which includes a curtain track, a middle rail, a lower rail, a curtain body, a first transmission module, a second transmission module, and a curtain limiting device. The middle rail is arranged between the curtain rail and the lower rail. The curtain body is arranged between the curtain track and the lower rail, and the curtain body includes an upper curtain and a lower curtain, wherein the upper curtain is connected between the curtain track and the middle rail, and the lower curtain is connected between the middle rail and the lower rail. The first transmission module and the second transmission module are respectively arranged in the curtain track, the first transmission module controls the middle rail to rise or fall, the second transmission module controls the lower rail to rise or fall, wherein the first transmission module and the The second transmission modules respectively include a speed change device, a transmission rod and a pair of winding devices. The transmission rod is linked to the speed change device and the pair of winding devices. The speed change device of the first transmission module and the speed change device of the second transmission module are respectively Correspondingly connected to a pulling rope, the pair of wire winding devices of the first transmission module and the pair of wire winding devices of the second transmission module are respectively used to connect a wire, and one end of each wire of the pair of wire winding devices of the first transmission module Connected to the middle rail, one end of each rope of the pair of wire winding devices of the second transmission module is connected to the lower rail. The curtain limiting device is arranged in the curtain track, and the curtain limiting device is connected between the first transmission module and the second transmission module, and the first transmission module, the second transmission module and the curtain limiting device are located in on an axis within the curtain track. The curtain limiting device includes a first rotating part, a second rotating part and a fixed base. The first rotating part is linked to the transmission rod in the first transmission module, the first rotating part includes a first head and a first joint part, the first joint part is connected with the first head, and the surface of the first joint part has an external thread. The first rotating member is rotatably arranged in the second rotating member, and the second rotating member is linked to the transmission rod in the second transmission module, and the first rotating member and the second rotating member are a male-female matching structure . The second rotating member includes a second head, a second joint, and a screw hole, the second joint is connected to the second head, the first head faces the second head, and the surface of the first joint is The external thread can be matched with an internal thread in the screw hole, so that the first joint part can move in the screw hole by rotating, so that there is a first rotation stroke between the first rotating member and the second rotating member, And the surface of the second joint portion has an external thread. The fixed base body is rotatably arranged outside the second rotating member, the second rotating member and the fixed base system are another male-female matching structure, the fixed base body includes a through hole, and the through hole is used for the second rotating member in the second rotating member. The two joint parts are pierced, and the external thread on the surface of the second joint part can cooperate with the internal thread in the hole, so that the second joint part can move in the hole by rotating, so that the fixed seat body and the second rotating member There is a second rotational stroke therebetween.

Another embodiment of the present invention provides a curtain limiting device. The curtain limiter is used for a curtain. The curtain includes a curtain track, a lower rail, a curtain body, a first transmission module and a second transmission module, and a curtain limiting device. The middle rail is arranged between the curtain track and the lower rail, the curtain body is arranged between the curtain track and the lower rail, the curtain body includes an upper curtain and a lower curtain, the upper curtain is connected between the curtain track and the middle rail, and the lower curtain is connected to Between the middle rail and the lower rail, the first transmission module and the second transmission module are respectively arranged in the curtain track, the first transmission module controls the middle rail to rise or fall, and the second transmission module controls the lower rail to rise or fall , the first transmission module and the second transmission module respectively comprise a speed change device, a transmission rod and a pair of winding devices, the transmission rod is linked to the speed change device and the pair of winding devices, the speed change device of the first transmission module and the second The speed change devices of the transmission module are respectively connected with a pull rope, the pair of wire winding devices of the first transmission module and the pair of wire winding devices of the second transmission module are respectively used for connecting a rope, the pair of the first transmission module One end of each rope of the reeling device is connected to the middle rail, one end of each rope of the opposite reeling device of the second transmission module is connected to the lower rail, the curtain limiting device is arranged in the curtain track, and the curtain limiting device is connected to the first rail. Between a transmission module and a second transmission module, the first transmission module, the second transmission module and the curtain limiting device are located on an axis in the curtain track. The curtain limiting device includes a first rotating part, a second rotating part and a fixed base. The first rotating member is used to link the transmission rod in the first transmission module. The first rotating member includes a first head and a first joint. The first joint is connected to the first head, and the first joint is connected to the first joint. The surface has an external thread. The first rotating member is rotatably arranged in the second rotating member, and the second rotating member is used to link the transmission rod in the second transmission module. The first rotating member and the second rotating member are in a male-female fit structure, the second rotating member includes a second head, a second joint and a screw hole, the second joint is connected to the second head, the first head faces the second head, and the first joint The external thread on the surface can be matched with an internal thread in the screw hole, so that the first joint can move in the screw hole by rotating, so that there is a first rotating member and a second rotating member. the rotation stroke, and the surface of the second joint part has an external thread. The fixed base body is rotatably arranged outside the second rotating member, the second rotating member and the fixed base system are another male-female matching structure, the fixed base body includes a through hole, and the through hole is used for the second rotating member in the second rotating member. The two joint parts are pierced, and the external thread on the surface of the second joint part can cooperate with the internal thread in the hole, so that the second joint part can move in the hole by rotating, so that the fixed seat body and the second rotating member There is a second rotational stroke therebetween.

In an embodiment of the present invention, the first rotating member, the second rotating member and the fixed base are respectively located on the axis.

In an embodiment of the present invention, the end face of the first head portion faces the end face of the second head portion, and the size of the end face of the first head portion is equal to the size of the end face of the second head portion.

In an embodiment of the present invention, the first rotating member and the second rotating member respectively further include a stopper portion, and the stopper portions are mutually locked to restrict the mutual rotation of the first rotating member and the second rotating member .

In an embodiment of the present invention, the second rotating member and the fixed base further include a stopper portion, respectively, and the stopper portions are mutually locked to restrict the mutual rotation of the second rotating member and the fixed base.

Based on the above, the present invention can limit and control the lifting and lowering strokes of the middle rail and the lower rail of the curtain by means of the curtain limiting device, so as to prevent overlapping and entanglement of the cords on the cords in the cord winding device.

In order to make the present invention more obvious and easy to understand, the following specific embodiments are given and described in detail in conjunction with the accompanying drawings as follows.

The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and embodiments. The following examples are only used to more clearly illustrate the technical solutions of the present invention, but not to limit the protection scope of the present invention.

It should be noted that, in the description of each embodiment, the so-called "left", "right", etc. are described only in the direction of the drawings, and are not used to limit the present invention. The so-called "first", "second", and "third" are used to describe different elements, and these elements are not limited by such terms. In addition, for the convenience and clarity of description, the thickness or size of each element in the drawings is shown in an exaggerated or omitted or rough manner for the understanding and reading of those skilled in the art, and the size of each element is not shown. It is entirely its actual size, and is not used to limit the conditions for the implementation of the present invention, so it has no technical significance. The effect and the achievable purpose should still fall within the scope covered by the technical content disclosed in the present invention.

FIG. 1 is a schematic diagram of an embodiment of the curtain of the present invention. Please refer to Figure 1. The curtain 50 of this embodiment at least includes a curtain body 51 , a curtain track 52 , a middle rail 54 , a lower rail 55 , a first transmission module 56 , a second transmission module 58 and a curtain limiting device 100 . The curtain body 51 is arranged between the curtain rail 52 and the lower rail 55. The curtain body 51 includes an upper curtain 51A and a lower curtain 51B, wherein the upper curtain 51A is connected between the curtain rail 52 and the middle rail 54, and the lower curtain 51B is connected to the middle rail. 54 and the lower rail 55. The curtain 50 of this embodiment is not limited to any type. The curtain body 51 can be adjusted to a venetian blind, a Roman curtain, a honeycomb curtain or any type of curtain body according to the actual product. Of course, the material of the curtain body 51 can also be adjusted according to actual needs. , this embodiment does not limit the material of the curtain body 51 .

FIG. 2 is a schematic diagram of some components in the curtain track of FIG. 1 . Figure 3 is a schematic view of the winding device and the curtain limiting device of Figure 2 being separated from the curtain track. It should be noted that, since the winding devices 565 and 566 in the first figure are similar components, the winding devices 585 and 586 are similar components. In order to enlarge the drawing for the convenience of description, the winding devices 565 and 565 are respectively omitted in the second and third figures. Winding device 585. Please refer to Figures 1 to 3. In this embodiment, the curtain track 52 is provided with a first transmission module 56 for controlling the middle rail 54 to ascend in the ascending direction L2 or descending in the descending direction L1, and control the lower rail 55 to ascend or descend toward the ascending direction L2 or descending direction. The second transmission module 58 is lowered by L1, wherein the pull rope 12 on the left is connected to the first transmission module 56 and controls the middle rail 54 to have a middle rail moving stroke D1. The middle rail moving stroke D1 is from the bottom side of the curtain rail 52 to the The distance between the top side of the middle rail 54, that is, the movable stroke of the middle rail 54, that is, the range that the upper curtain 51A can be rolled; The moving stroke D2, the moving stroke D2 of the lower rail is the distance from the bottom side of the middle rail 54 to the top side of the lower rail 55, that is, the movable stroke of the lower rail 55, that is, the rollable range of the lower curtain 51B.

In this embodiment, the first transmission module 56 and the second transmission module 58 are disposed on both sides of the accommodating groove 522 of the curtain track 52 and are located on the same axis L. The first transmission module 56 includes a transmission device 562, a transmission rod 564, and a pair of winding devices 565 and 566, wherein the transmission rod 564 passes through the winding devices 566 and 565 and the transmission device 562 respectively. Between the speed change device 562 and the wire winding devices 566 and 565 , the rod body 5642 at the other end of the transmission rod 564 is linked with the wire winding device 566 and the curtain limiting device 100 . Similarly, the second transmission module 58 includes a transmission device 582 , a transmission rod 584 , and wire winding devices 585 and 586 , wherein the transmission rod 584 passes through the wire winding devices 585 and 586 and the transmission device 582 respectively. A rod body 5841 at one end of the transmission rod 584 Linked with the speed change device 582 and the winding devices 586 and 585 , the rod body 5842 at the other end of the transmission rod 584 is linked with the winding device 586 and the curtain limiting device 100 .

In an embodiment, referring to FIG. 2 and FIG. 3 , the winding device 566 may include a winding base 5661 and fixing members 5662 and 5664 disposed on both sides of the winding base 5661 . In the groove 522 , the fixing pieces 5662 and 5664 are respectively arranged on both sides of the reeling base 5661 . The rod body 5641 at one end of the transmission rod 564 passes through the fixing member 5662 and the wire winding device 566 , and the rod body 5642 at the other end of the transmission rod 564 passes through the wire winding device 566 and the fixing member 5664 . Similarly, the wire winding device 565 can be configured according to the components in the above-mentioned wire winding device 566 , that is, the wire winding device 565 also has a wire winding base and fixing parts provided on both sides thereof. However, the reeling seat body 5661 and the fixing members 5662 and 5664 of the above-mentioned fixed reeling device 566 are only a specific embodiment, and the present invention does not limit the components of the above-mentioned fixed reeling device 566 . In addition, in this embodiment, a speed change device 562 for the pull rope 12 to link the transmission rod 564 is provided in this embodiment. For example, a speed change gear set is arranged in the speed change device 562 to convert the pulling distance of the pull rope 12 into an appropriate amount of the corresponding transmission rod 564. Rotating speed. The wire winding devices 565 and 566 are used for winding or unwinding (retracting) the corresponding wires 569 and 568 , wherein one end of the wires 569 and 568 is connected to the middle rail 54 .

Similarly, in one embodiment, the reeling device 586 may include a reeling seat 5861 and fixing members 5862 and 5864 disposed on both sides thereof. The reeling seat 5861 may be fixed in the accommodating groove 522 of the curtain track 52, and the fixing members 5862 and 5864 are respectively arranged on both sides of the reeling base 5661 , the reeling device 586 is accommodated in the reeling base 5861 , and the fixing members 5862 and 5864 are clamped on both sides of the reeling device 586 . The rod body 5841 at one end of the transmission rod 584 passes through the fixing member 5862 and the wire winding device 586 , and the rod body 5842 at the other end of the transmission rod 584 passes through the wire winding device 586 and the fixing member 5864 . Similarly, the wire winding device 585 can be configured according to the components in the above-mentioned wire winding device 586 , that is, the wire winding device 585 also has a wire winding base and fixing parts provided on both sides thereof. Of course, the reel seat body 5861 and the fixing members 5862 and 5864 of the above-mentioned fixed reeling device 586 are only a specific embodiment, and the present invention does not limit the components of the above-mentioned fixed reeling device 586 . In addition, in this embodiment, a speed change device 582 is provided for the pull rope 14 to link the transmission rod. For example, a speed change gear set is arranged in the speed change device 582 to convert the pulling distance of the pull rope 14 into an appropriate rotation speed of the corresponding transmission rod 584 . The wire winding devices 586 and 585 are used for winding or unwinding (retracting) the corresponding wires 588 and 589 . One end of the wires 588 and 589 is connected to the lower rail 55 .

In this embodiment, the cables 569 and 568 of the first transmission module 56 are extended downward by the corresponding winding devices 565 and 566 to suspend the middle rail 54 , and the cables 589 and 588 of the second transmission module 58 are extended downward. The lower rail 55 is suspended downward by the corresponding winding devices 585 and 586 . For example, when any one of the pulling ropes 12 and 14 of the first transmission module 56 and the second transmission module 58 drives the corresponding transmission rods 564 and 584 to rotate through the speed change devices 562 and 582 respectively, the speed change device The actuation of 562 and the transmission rod 564 can make the winding devices 565, 566 rotate synchronously to retract the corresponding ropes 569, 568, so as to drive the middle rail 54 in the two-stage curtain body 51 to rise and fall, so that the upper curtain 51A can be opened and closed ; Similarly, through the action of the speed change device 582 and the transmission rod 584, the winding devices 585, 586 can be rotated synchronously to retract the corresponding ropes 589, 588, so as to drive the lower rail 55 in the two-stage curtain body 51 The lower curtain 51B is opened and closed by raising and lowering. Through the above operation methods, the basic function of controlling the opening and closing of the upper curtain 51A and the lower curtain 51B of the two-stage curtain body 51 is achieved respectively.

In this embodiment, the curtain limiting device 100 is connected between the first transmission module 56 and the second transmission module 58 . For details, please also refer to Figure 4 and Figure 5. The curtain limiting device 100 includes a first rotating member 110 , a second rotating member 120 and a fixed base 130 . The first rotating member 110 is rotatably disposed inside the second rotating member 120 , and the fixing base 130 is rotatably disposed outside the second rotating member 120 . The rod body 5642 of the transmission rod 564 in the first transmission module 56 is connected to the hole 116 of the first rotating member 110 , so that the transmission rod 564 is linked with the first rotating member 110 . The rod body 5842 of the transmission rod 584 in the second transmission module 58 is connected to the hole 129 of the second rotating member 120 , so that the transmission rod 584 is linked with the second rotating member 120 .

In this embodiment, the first transmission module 56 , the second transmission module 58 , the first rotating member 110 , the second rotating member 120 and the fixed base 130 are located on the same axis L in the curtain track 52 , that is, The first transmission module 56 , the second transmission module 58 , the first rotating member 110 , and the second rotating member 120 are coaxial with the fixed base 130 , wherein the first transmission module 56 and the second transmission module 58 are arranged on the curtain. On both sides of the accommodating groove 522 of the rail 52 , the first rotating member 110 , the second rotating member 120 and the fixed base 130 are located between the first transmission module 56 and the second transmission module 58 .

In this embodiment, the first rotating member 110 and the second rotating member 120 are a male-female matching structure. The first rotating member 110 and the second rotating member 120 are rotatably screwed to each other; the second rotating member 120 and the fixed The base body 130 is another male-female matching structure. The second rotating member 120 and the fixed base body 130 are rotatably screwed to each other to form a combination of a set of male parts, female parts, male parts, and female parts. The piece 120 itself has the structure of a female piece and a male piece.

In detail, the first rotating member 110 includes a first head 112 and a first joint 114 . The diameter of the first head 112 is larger than that of the first joint 114 , and the first joint 114 is connected to the first joint 114 . The head 112, the first head 112 has two opposite end faces 112A, 112B, and the first joint part 114 is formed by the end face 112B of the first head 112 extending along the axis L, the first joint part 114 is a bolt or A threaded post with external threads on its surface. The first head 112 has a hole 116 . The hole 116 is perforated from the surface of the end surface 112A and penetrates to the outside of the end surface 112B along the axis L. The hole 116 is used for the rod body 5642 of the transmission rod 564 in the first transmission module 56 Pass through, and make the rod body 5642 of the transmission rod 564 fixed in the hole 116 .

On the other hand, there is still an inner hole 118 in the first joint portion 114 . The inner hole 118 penetrates through the first joint portion 114 along the axis L. The inner hole 118 communicates with the hole 116 , and the size of the inner hole 118 is larger than that of the first joint portion 114 . Dimensions of holes 116 . It should be noted that when the rod body 5642 of the transmission rod 564 passes through and is disposed in the hole 116, one end of the rod body 5642 may be located in the inner hole 118 depending on the actual length, but the rod body 5642 of this embodiment has The shape is a square rod, which matches the square hole of the hole 116, so that the rod body 5642 of the transmission rod 564 is restrained in the hole 116, so that when the transmission rod 564 rotates, the first rotating member 110 can follow the transmission rod 564 along the axis L rotate together.

In this embodiment, the second rotating member 120 includes a second head 122 and a second joint 124 , the diameter of the second head 122 is larger than the diameter of the second joint 124 , and the second joint 124 is connected The second head 122, the second head 122 has two opposite end faces 122A, 122B, and the second joint 124 is formed by extending the end face 122B of the second head 122 along the axis L, and the second joint 124 is a A bolt or a threaded post with external threads on its surface. The second head portion 122 has a screw hole 126 . The screw hole 126 is perforated from the surface of the end surface 122A and penetrates outside the end surface 122B along the axis L. As shown in FIG. The second joint portion 124 has a screw hole 128, which is perforated along the axis L and partially penetrates into the second head portion 122. The screw hole 126 and the screw hole 128 are communicated with each other. The size of a joint portion 114 is matched, so that the first joint portion 114 can be located in the screw holes 126 and 128 . More importantly, the external threads on the surface of the first joint portion 114 can match the screw holes in the screw holes 126 and 128 . The internal threads are matched, that is, the first joint portion 114 can be screwed into the screw holes 126 and 128, so that the first joint portion 114 can be moved in the screw holes 126 and 128 by rotating (screwing in or screwing out). , forming a male-female matching structure of a male member (the first joint portion 114 in the first rotating member 110 ) and a female member (the screw holes 126 and 128 in the second rotating member 120 ). In addition, since the first joint portion 114 can move within the screw holes 126 and 128 by rotating, the first head portion 112 of the first rotating member 110 and the second head portion 122 of the second rotating member 120 can have a space between them. The first rotation stroke (such as the first rotation stroke P1 in Fig. 6B ).

In addition, there is a hole 129 in the second joint portion 124 . The hole 129 is perforated along the axis L and partially penetrates into the second joint portion 124 . The hole 129 communicates with the screw hole 128 , and the size of the hole 129 is smaller than that of the screw hole 128 . Similarly, it should be noted that when the rod body 5842 of the transmission rod 584 passes through and is disposed in the hole 129, one end of the rod body 5842 may be located in the inner screw hole 128 depending on the actual length. The shape of the rod body 5842 is a square rod, which fits the square hole of the hole 129 , so that the rod body 5842 of the transmission rod 584 is restrained in the hole 129 , so that when the transmission rod 584 rotates, the second rotating member 120 can follow the transmission rod 584 Rotate together along the axis L.

In one embodiment, the end face 112B of the first head 112 in the first rotating member 110 faces the end face 122A of the second head 122 in the second rotating member 120 , and the first head in the first rotating member 110 faces the end face 122A of the second head 122 in the second rotating member 120 . The size of the end face 112B of the portion 112 is equal to the size of the end face 122A of the second head portion 122 in the second rotating member 120 (as shown in FIG. 5 ), so that the first rotating member 110 or the second rotating member 120 is rotated to screw with each other. At the same time, the size of the end face 112B of the first head 112 is the same as the size of the end face 122A of the second head 122, so that the force between the end face 112B of the first head 112 and the end face 122A of the second head 122 can be evenly distributed Therefore, the damage caused by the displacement of the rotating member (referring to the first rotating member 110 or the second rotating member 120 ) can be reduced.

In this embodiment, the fixing base 130 is disposed in the accommodating groove 522 of the curtain track 52 , and the fixing base 130 includes a through hole 132 , and the through hole 132 is used for the second joint portion 124 of the second rotating member 120 to pass through. , the size of the second joint portion 124 is consistent with the size of the hole 132, and the hole 132 is provided with an inner thread 134, and the outer thread on the surface of the second joint portion 124 can be matched with the inner thread 134 in the hole 132, so that The second joint portion 124 can move within the through hole 132 by rotating (screwing in or out) to form a male piece (the second joint portion 124 in the second rotating piece 120 ) and a female piece (the fixed base 130 ). The male and female mating structure of the through hole 132). In addition, since the second joint portion 124 can move within the through hole 132 by rotating, there can be a second rotational stroke between the fixed base 130 and the second head portion 122 of the second rotating member 120 (as shown in FIG. 6A ). The second rotational stroke P2).

It can be seen from this that the first rotating member 110 and the second rotating member 120 in this embodiment are in a male-female matching relationship, and the second rotating member 120 and the fixing base 130 are in another male-female matching relationship, forming a set of The combination form of male part, female part, male part and female part, wherein the second rotating part 120 itself can be used as the female part (the screw holes 126 and 128 ) and the male part (the second joint part 124 ). In one embodiment, the fixed base 130 is movably disposed in the accommodating groove 522 of the curtain track 52 , so that the first rotating member 110 , the second rotating member 120 and the fixed base 130 can move left and right along the axis L. In another embodiment, the fixing base 130 is fixed in the accommodating groove 522 of the curtain track 52 , and the first rotating member 110 and the second rotating member 120 can move left and right along the axis L.

In one embodiment, the end surface 122A of the second rotating member 120 and the end surface 112B of the first rotating member 110 further include a stopper respectively, so that the first rotating member 110 rotates relative to the second rotating member 120 , or the second rotating member When the rotating member 120 rotates relative to the first rotating member 110 , the first rotating member 110 and the second rotating member 120 can be locked together through the stop portion of the first rotating member 110 and the stopping portion of the second rotating member 120 to restrict the first rotating member 110 and the second rotating member 120 . The rotation stroke of mutual rotation, while limiting the synchronous rotation of the winding devices 566, 565, 586, 585 to retract the corresponding ropes 568, 569, 588, 589 to ascend or descend, to control the closing and closing of the curtain body 51 of the curtain 50. open position. It should be noted that the type of the stopper is not limited. For example, as shown in FIG. 5 or 6B, a stopper 121 is provided on the end surface 122A of the second head 122 of the second rotating member 120 . The stopper 121 For example, it is a bump, which is formed by the surface of the end surface 122A protruding outward, and correspondingly, a stopper is also provided on the end surface 112B of the first head 112 of the first rotating member 110. As shown in FIG. 6B, the first A stopper portion 111 is provided on the end surface 112B of the first head 112 of a rotating member 110 . The stopper portion 111 is, for example, a protrusion, which is formed by protruding outward from the surface of the end surface 112B to achieve the above-mentioned mutual locking function. . Similarly, as shown in FIG. 5 or FIG. 6A , the surface 130A of the fixed seat body 130 may be provided with a stopper 131 , and the end surface 122B of the second head 122 of the second rotating member 120 correspondingly is also provided with a stopper. The blocking portion 123 allows the second rotating portion 120 to rotate relative to the fixed base body 130 , the above-mentioned blocking portions 131 and 123 can achieve a mutual locking function, so as to restrict the mutual rotation of the second rotating member 120 and the fixed base body 130 rotation stroke.

The operation mode of the curtain of this embodiment will be described below with reference to FIGS. 6A to 6C .

FIG. 6A is a schematic diagram of an embodiment of the curtain limiting device of the present invention. Please also refer to Figure 6A and Figure 1. Fig. 6A shows the state in which the upper curtain 51A and the lower curtain 51B shown in Fig. 1 are both folded, so that the two sides of the middle rail 54 are in contact with the bottom side of the curtain rail 52 and the top side of the lower rail 55. That is, the lower rail 55 is moved to contact the bottom side of the middle rail 54 to close the lower curtain 51B; and the middle rail 54 is moved to contact the bottom side of the curtain track 52 to close the upper curtain 51A. In the state where the upper curtain 51A and the lower curtain 51B are both folded, the first rotating member 110 and the second rotating member 120 are respectively at an upper limit position, and the middle rail 54 has moved to the curtain rail 52 as mentioned above. on the bottom side, the middle rail 54 is blocked by the curtain rail 52 and cannot continue to rise, so that the first head 112 in the first rotating member 110 cannot continue to move to the left (here refers to the distance from the second rotation as shown in FIG. 6A ) member 120) to move. On the other hand, the second head 122 of the second rotating member 120 has been moved and is in contact with the first head 112 of the first rotating member 110 , so that the second head 122 of the second rotating member 120 cannot continue to move to the left. The side (here refers to the direction of the first rotating member 110 as shown in FIG. 6A) moves, so that the lower rail 55 cannot continue to rise. That is, the curtain limiting device 100 of this embodiment can prevent the lower rail 55 from continuing to rise. Push to middle rail 54.

In this embodiment, it can be seen from the state in which the upper curtain 51A and the lower curtain 51B are both folded in Fig. 6A, the second rotating member 120 is located between the first rotating member 110 and the fixed base 130, and the second rotating member 120 can be The moving stroke is restricted by the first rotating member 110 and the fixed base 130 , that is, the movable upper limit position of the second rotating member 120 is defined by the position of the first rotating member 110 . The blocking portion 121 of the rotating member 120 and the blocking portion 111 of the first rotating member 110 are locked with each other to restrict the mutual rotation of the first rotating member 110 and the second rotating member 120 . The movable lower limit position of the second rotating member 120 is defined by the position of the fixed base 130 . Further, in this embodiment, the stopper portion 123 of the second rotating member 120 and the stopper portion 131 of the fixed base body 130 are clamped to each other to restrict the mutual rotation of the second rotating member 120 and the fixed base body 130 .

In this embodiment, when the second rotating member 120 is moved to the upper limit position, as shown in FIG. 6A , there may be a second rotating stroke between the fixed base 130 and the second head 122 of the second rotating member 120 P2, the second rotational stroke P2 is the distance calculated from the end surface 122B of the second head 122 to the surface 130A of the fixed base 130 , which represents the distance between the second rotating member 120 and the fixed base 130 .

In this embodiment, when the pull rope 14 drives the transmission rod 584 to rotate in a second direction G2 through the speed change device 582, the winding devices 585 and 586 are used to wind up the corresponding ropes 589 and 588, so that the lower rail 55 faces toward the second direction G2. The descending direction L1 descends so that the lower curtain 51B spreads a distance. On the other hand, the rod body 5842 of the transmission rod 584 is linked with the second rotating member 120 , so that the second rotating member 120 rotates relative to the first rotating member 110 in the second direction G2 at the same time, and the second head of the second rotating member 120 rotates relative to the first rotating member 110 . 122 moves along the axis L in a direction away from the first head 112 of the first rotating member 110, and at the same time, the second joint portion 124 in the second rotating member 120 also rotates and moves relative to the inside of the fixed seat body 130, The second head 122 of the second rotating member 120 is moved along the axis L in the direction of the fixed base 130, thereby changing the distance of the second rotating stroke P2. When the second rotating member 120 is continuously rotated to the lower limit position as shown in FIG. 6B , compared with the second rotating stroke P2 in FIG. 6A , there is a distance between the first rotating member 110 and the second rotating member 120 at this time. A first rotational stroke P1.

In addition, since the second rotating member 120 is blocked by the fixed base 130 and cannot continue to rotate, the pull cord 14 cannot continue to be pulled, and the lower rail 55 is placed at the lower limit position, that is, the maximum distance for the lower curtain 51B to unfold. For example, as shown in FIG. 1 , the maximum movement stroke of the lower rail 55 is the lower rail movement stroke D2 , which is the distance from the top side of the lower rail 55 to the bottom side of the middle rail 54 . Comparing to the moving strokes in Figs. 6A to 6B, the second rotation stroke P2 in Fig. 6B corresponds to the lower rail moving stroke D2 in Fig. 1 .

Conversely, when the lower curtain 51B is to be rolled up, the transmission rod 584 can be driven to rotate in a first direction G1 through the speed change device 582 through the pull rope 14, and the winding devices 585 and 586 are used to wind up the corresponding ropes 589 and 588. Let the lower rail 55 ascend in the ascending direction L2. At this time, the ascending distance of the lower rail 55 is limited within the range of the aforementioned second rotation stroke P2. In other words, the second rotation stroke of the curtain limiting device 100 in this embodiment can P2 is used to limit the movement stroke of the lower rail 55 , and the distance of the second rotation stroke P2 is determined based on the ascending or descending movement stroke of the lower rail 55 . When the lower rail 55 is moved to the bottom side of the middle rail 54, because the second rotating member 120 is rotated to the upper limit position and cannot continue to rotate, the pulling rope 14 cannot continue to be pulled. The middle rail 54 is pushed, thereby preventing the wires 569 and 568 of the middle rail 54 from being pulled, thereby avoiding the subsequent overlapping and entanglement of the wires 569 and 568 of the middle rail 54 due to their slack state.

In this embodiment, as shown in FIG. 6B, for example, in the aforementioned process, if the second rotating member 120 is rotated, there is a first rotating member 110 and a second rotating member 120 therebetween. During the rotation stroke P1 , the movable lower limit position of the first rotating member 110 is defined by the position of the second rotating member 120 . On the other hand, the movable upper limit position of the first rotating member 110 is defined according to the position where the middle rail 54 is moved to the bottom side of the curtain track 52, that is, the middle rail 54 is moved to the bottom side of the curtain track 52, The rail 54 is blocked by the curtain rail 52 and can no longer continue to rise. At this time, the corresponding first rotating member 110 can no longer continue to move to the left (referring to the direction of the first rotating member 110 moving away from the second rotating member 120 as shown in FIG. 6B ). ) to define the upper limit position.

In this embodiment, when the pull rope 12 drives the transmission rod 564 to rotate in the second direction G2 through the speed change device 562, the winding devices 565 and 566 are used to wind up the corresponding ropes 569 and 568, so that the middle rail 54 faces the second direction G2. The descending direction L1 descends, so that the upper curtain 51A spreads out a distance, and the distance is limited by the first rotating stroke P1 formed between the first rotating member 110 and the second rotating member 120 described above. On the other hand, the rod body 5642 of the transmission rod 564 is linked with the first rotating member 110 , so that the first rotating member 110 rotates relative to the second rotating member 120 in the second direction G2 at the same time, so that the first head of the first rotating member 110 is rotated The portion 112 moves in the direction of the second head portion 122 of the second rotating member 120 along the axis L, thereby changing the distance of the first rotating stroke P1. When the first rotating member 110 continues to be rotated to the lower limit position as shown in FIG. 6C, since the first rotating member 110 is blocked by the second rotating member 120 and cannot continue to rotate, the pulling rope 12 cannot continue to be pulled. Then, the middle rail 54 is placed at the lower limit position, that is, the maximum distance for the upper curtain 51A to be unfolded. For example, as shown in FIG. 1 , the maximum moving stroke of the middle rail 54 is the middle rail moving stroke D1 , which is the distance from the bottom side of the curtain rail 52 to the top side of the middle rail 54 . Comparing to the moving strokes in Fig. 6B to Fig. 6C, the first rotation stroke P1 in Fig. 6B corresponds to the middle rail moving stroke D1 in Fig. 1 . In addition, at this time, the pulling rope 12 cannot continue to be pulled, so that the middle rail 54 is at the lower limit position and cannot continue to descend, so it can avoid the phenomenon that the ropes 569 and 568 in the winding devices 565 and 566 are idling due to the continuous descending of the middle rail 54 . , so as to avoid the overlapping and entanglement of the wires 569 and 568 .

Conversely, when the upper curtain 51A is to be rolled up, the transmission rod 564 can be driven to rotate in the first direction G1 through the speed change device 562 through the pull rope 12, and the winding devices 565 and 566 are used to wind up the corresponding ropes 569 and 568. Let the middle rail 54 rise in the ascending direction L2, the rod body 5642 of the transmission rod 564 is linked with the first rotating member 110, so that the first rotating member 110 rotates relative to the second rotating member 120 in the first direction G1 at the same time, the first rotating member The first head 112 of the 110 moves along the axis L in a direction away from the second head 122 of the second rotating member 120. At this time, the rising distance of the middle rail 54 is limited within the range of the first rotation stroke P1. More specifically, when the middle rail 54 is moved to the bottom side of the curtain rail 52 and is blocked by the curtain rail 52 and cannot continue to rise, the first rotating member 110 cannot continue to rotate and is located at the position of the first rotating member 110 . The upper limit position makes it impossible for the winding devices 565 and 566 to continue to wind up the corresponding ropes 569 and 568 , thereby avoiding the overlapping and winding problems of the ropes 569 and 568 in the winding devices 565 and 566 . It can be seen that, in this embodiment, the moving stroke of the middle rail 54 can be limited by the first rotation stroke P1 of the curtain limiting device 100 , and the distance of the first rotation stroke P1 is based on the ascending or descending movement stroke of the intermediate rail 54 Certainly.

To sum up, the present invention can limit and control the lifting strokes of the middle rail and the lower rail of the curtain by means of the curtain limiting device, so as to prevent overlapping and entanglement of the cords on the cords in the cord winding device.

Furthermore, the first rotating member and the second rotating member of the present invention are a male-female matching structure, so that the first rotating member and the second rotating member can be rotatably screwed with each other, and the second rotating member and the fixed base are the other one. The male-female matching structure enables the second rotating piece and the fixed base to be rotatably screwed together to form a combination of a set of male pieces, female pieces, male pieces and female pieces.

In addition, the size of the first head in the first rotating member of the curtain limiting device of the present invention is equal to the size of the second head in the second rotating member, so that the first rotating member or the second rotating member rotates to mutually When screwing together, the size of the first head is the same as the size of the second head, so that the force on the contact end faces of the first head and the second head can be evenly distributed, and the damage caused by the displacement of the rotating part can be reduced.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

12, 14: drawstring 50: Curtains 51: Curtain body 51A: Upper Curtain 51B: Lower Curtain 52: Curtain Track 522: accommodating slot 54: Middle rail 55: Lower rail 56: The first transmission module 562: Gearbox 564: Transmission rod 5641, 5642: Rod body 565, 566: Winding devices 5661: Reel body 5662, 5664: Fixtures 568,569: String 58: The second transmission module 582: Gearbox 584: Transmission rod 5841, 5842: Rod body 585, 586: Winding devices 5861: Reel body 5862, 5864: Fixtures 588,589: String 100: Curtain limit device 110: The first rotating part 111: Stopper 112: First Head 112A, 112B: End face 114: The first joint 116: Hole 118: Inner hole 120: Second rotating part 121, 123: Stopper 122: Second Head 122A, 122B: End face 124: The second joint 126, 128: screw holes 129: Hole 130: Fixed seat 130A: Surface 131: Stopper 132: perforation 134: Internal thread D1: Middle rail travel stroke D2: Lower rail travel stroke L: axis L1: descending direction L2: Upward direction G1: first direction G2: Second direction P1: The first rotation stroke P2: The second rotation stroke

FIG. 1 is a schematic diagram of an embodiment of the curtain of the present invention. FIG. 2 is a schematic diagram of some components in the curtain track of FIG. 1 . Figure 3 is a schematic view of the winding device and the curtain limiting device of Figure 2 being separated from the curtain track. FIG. 4 is a schematic diagram of the curtain limiting device of the present invention. FIG. 5 is an exploded view of the curtain limiting device of FIG. 4 . FIG. 6A is a schematic diagram of an embodiment of the curtain limiting device of the present invention. FIG. 6B is a schematic diagram of another embodiment of the curtain limiting device of the present invention. FIG. 6C is a schematic diagram of another embodiment of the curtain limiting device of the present invention.

12, 14: drawstring

50: Curtains

51: Curtain body

51A: Upper Curtain

51B: Lower Curtain

52: Curtain Track

54: Middle rail

55: Lower rail

56: The first transmission module

562: Gearbox

564: Transmission rod

5641, 5642: Rod body

565, 566: Winding devices

568,569: String

58: The second transmission module

582: Gearbox

584: Transmission rod

5841, 5842: Rod body

585, 586: Winding devices

588,589: String

100: Curtain limit device

D1: Upper rail travel stroke

D2: Lower rail travel stroke

L: axis

L1: descending direction

L2: Upward direction

Claims (10)

A curtain comprising: a curtain track; a middle rail; a lower rail, wherein the middle rail is arranged between the curtain rail and the lower rail; A curtain body is arranged between the curtain track and the lower rail, the curtain body includes an upper curtain and a lower curtain, wherein the upper curtain is connected between the curtain track and the middle rail, and the lower curtain is connected with the middle between the rail and the lower rail; A first transmission module and a second transmission module are respectively disposed in the curtain track, the first transmission module controls the middle rail to rise or fall, and the second transmission module controls the lower rail to rise or fall , wherein the first transmission module and the second transmission module respectively comprise a speed change device, a transmission rod and a pair of winding devices, the transmission rod is linked to the speed change device and the pair of winding devices, the first transmission module The speed change device and the speed change device of the second transmission module are respectively connected with a pull rope, and the pair of wire winding devices of the first transmission module and the pair of wire winding devices of the second transmission module are respectively used for connecting a a rope, one end of each of the ropes of the pair of winding devices of the first transmission module is connected to the middle rail, and one end of each of the ropes of the pair of winding devices of the second transmission module is connected to the lower rail; and A curtain limiting device is arranged in the curtain track, and the curtain limiting device is connected between the first transmission module and the second transmission module, and the first transmission module and the second transmission module The module and the curtain limiting device are located on an axis in the curtain track, and the curtain limiting device includes: A first rotating member is linked to the transmission rod in the first transmission module, the first rotating member includes a first head and a first joint portion, the first joint portion is connected to the first head, The surface of the first joint portion has an external thread; A second rotating member, the first rotating member is rotatably disposed in the second rotating member, and the second rotating member is linked with the transmission rod in the second transmission module, the first rotating member and the The second rotating member is a male-female matching structure, the second rotating member includes a second head, a second joint and a screw hole, the second joint is connected to the second head, the first The head faces the second head, and the external thread on the surface of the first joint part can be matched with an internal thread in the screw hole, so that the first joint part can be rotated in the screw hole move inside so that there is a first rotation stroke between the first rotating member and the second rotating member, and the surface of the second joint portion has an external thread; and A fixed base is rotatably arranged outside the second rotating member, the second rotating member and the fixed base system are another male-female matching structure, the fixed base includes a through hole, the through hole is used for The second joint part in the second rotating part is penetrated, and the external thread on the surface of the second joint part can be matched with an internal thread in the through hole, so that the second joint part can be rotated in the The through hole moves inside, so that there is a second rotation stroke between the fixed base and the second rotating member. The curtain according to claim 1, wherein the first rotating member, the second rotating member and the fixed base are respectively located on the axis. The curtain as claimed in claim 1, wherein an end face of the first head portion faces an end face of the second head portion, and the size of the end face of the first head portion is equal to the end face of the second head portion size of. The curtain according to claim 1, wherein the first rotating member and the second rotating member further comprise a stopper portion, respectively, and the stopper portions are mutually clamped to restrict the first rotating member and the first rotating member. The two rotating parts rotate with each other. The curtain as claimed in claim 1, wherein the second rotating member and the fixed base further comprise a stopper portion, respectively, and the stopper portions are mutually clamped to restrict the second rotating member and the fixed base bodies rotate with each other. A curtain limiting device is used for a curtain, the curtain comprises a curtain track, a middle rail, a lower rail, a curtain body, a first transmission module and a second transmission module, wherein the middle rail is arranged on the between the curtain track and the lower rail, the curtain body is arranged between the curtain track and the lower rail, the curtain body includes an upper curtain and a lower curtain, the upper curtain is connected between the curtain track and the middle rail, The lower curtain is connected between the middle rail and the lower rail, the first transmission module and the second transmission module are respectively arranged in the curtain rail, and the first transmission module controls the middle rail to rise or fall , the second transmission module controls the lower rail to rise or fall, the first transmission module and the second transmission module respectively comprise a speed change device, a transmission rod and a pair of winding devices, the transmission rod is linked to the transmission The device and the pair of winding devices, the speed change device of the first transmission module and the speed change device of the second transmission module are respectively connected with a pull rope, the pair of winding devices of the first transmission module and the second The pair of winding devices of the transmission module are respectively used for connecting a rope, one end of each of the ropes of the pair of winding devices of the first transmission module is connected to the middle rail, and the pair of winding devices of the second transmission module One end of each of the ropes is connected to the lower rail, the curtain limiting device is arranged in the curtain track, and the curtain limiting device is connected between the first transmission module and the second transmission module, and The first transmission module, the second transmission module and the curtain limiting device are located on an axis in the curtain track, and the curtain limiting device includes: A first rotating member is used to link the transmission rod in the first transmission module. The first rotating member includes a first head and a first joint portion, and the first joint portion is connected to the first head part, the surface of the first joint part has an external thread; A second rotating member, the first rotating member is rotatably disposed in the second rotating member, and the second rotating member is used to link the transmission rod in the second transmission module, the first rotating member The second rotating part and the second rotating part are a male-female matching structure, the second rotating part includes a second head, a second joint part and a screw hole, the second joint part is connected to the second head, The first head faces the second head, and the external thread on the surface of the first joint part can be matched with an internal thread in the screw hole, so that the first joint part can be rotated The screw hole moves inside the screw hole, so that there is a first rotation stroke between the first rotating member and the second rotating member, and the surface of the second joint portion has an external thread; and A fixed base is rotatably arranged outside the second rotating member, the second rotating member and the fixed base system are another male-female matching structure, the fixed base includes a through hole, the through hole is used for The second joint part in the second rotating part is penetrated, and the external thread on the surface of the second joint part can be matched with an internal thread in the through hole, so that the second joint part can be rotated in the The through hole moves inside, so that there is a second rotation stroke between the fixed base and the second rotating member. The curtain limiting device according to claim 6, wherein the first rotating member, the second rotating member and the fixed base are respectively located on the axis. The curtain limiting device as claimed in claim 6, wherein an end face of the first head portion faces an end face of the second head portion, and the size of the end face of the first head portion is equal to that of the second head portion the size of the end face. The curtain limiting device as claimed in claim 6, wherein the first rotating member and the second rotating member further comprise a stopper portion respectively, and the stopper portions are mutually clamped to limit the first rotating member mutually rotates with the second rotating member. The curtain limiting device as claimed in claim 6, wherein the second rotating member and the fixed base further include a stopper portion, respectively, and the stopper portions are mutually clamped to restrict the second rotating member from interacting with each other. The fixed bases rotate with each other.

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