TW201307667A - Curtain with resistance balance mechanism - Google Patents

Abstract

Provided is a resistance balance mechanism used in curtain, including: a fixed shell having at least one abutting face; a pulley pivoted at the fixed shell and having a cord part and an axle part, wherein the cord part is surrounded by a hanging cord and the axle part shares an axle with the cord part and protrudes from one side of the cord part; and a torsion spring for fastening the axle part and having at least one terminal. The rotation of pulley toward one direction can drive the terminal of the torsion spring to contact the abutting face of the fixed shell so as to make the torsion spring open, thereby facilitating the pulley to rotate relative to the torsion spring. In addition, the present invention also provides a curtain with resistance balance mechanism.

Description

Curtain with resistance balancing mechanism

The invention relates to a curtain, in particular to a hand-held curtain with a resistance balancing mechanism.

There are many types of curtains, such as venetian blinds, roller blinds, and honeycomb curtains. When the curtains are lowered, they can cover the windows and reduce the sunlight entering the room, while also enhancing the privacy of the room and preventing others from seeing the situation inside the room. When the curtains are raised, people can see the complete and clear view from the window, and the sun can be shot into the room from the window. The conventional structure includes a top rail, a bottom rail, a curtain, and a driving mechanism. The bottom rail is connected to the lower end of the panel, and the driving mechanism is assembled to the inner side of the top rail, wherein the driving mechanism comprises There is a reel and an operating cord exposed outside the top rail. The user can drive the reel to rotate by pulling the operating cord so that the panel can be raised and lowered.

Although it is very convenient to operate the curtain to lift and lower the curtain, the blind has the hidden danger that the child may be suffocated by accidentally being operated by the rope to cover the neck.

Therefore, there is a need to provide a curtain that is safer and less troublesome to operate to overcome the above problems.

The invention provides a curtain provided with a resistance balancing mechanism, and the purpose of lifting the curtain is achieved by pushing or pulling the track of the curtain by hand.

According to an embodiment, a resistance balancing mechanism for a curtain is provided, comprising: a fixed housing provided with at least one abutting surface; a pulley pivotally connected to the fixed housing, wherein the pulley includes a winding portion And a shaft portion, the rope portion is surrounded by a suspension rope, the shaft portion has the same axis as the rope portion and protrudes from one side of the rope portion; and a torsion spring is tightly bundled The shaft portion has at least one end, wherein when the pulley rotates in a direction, the end of the torsion spring can be caused to abut against the abutting surface of the fixed casing, so that the torsion spring is opened to facilitate the pulley relative to the pulley The torsion spring rotates.

The fixed housing can be provided with a first side and a second side, and the suspension cord can enter the fixed housing through the first side, and after the winding portion is surrounded, the second side protrudes from the second side Fixed housing.

According to various embodiments, the first side and the second side are approximately perpendicular or parallel to each other.

According to an embodiment, the fixed housing may further be provided with a stop piece on the second side, and a slit may be formed between the stop piece and a side edge of the fixed case to provide the suspension rope for use. . The stop piece is slidably assembled to the fixed housing and can be pressed against the suspension rope. In addition, the sling can be wound one or more times on the rope portion.

According to another embodiment of the present invention, a curtain includes: a first track; a second track; a shade disposed between the first track and the second track; and at least one sling, Connected between the first track and the second track. The second rail is provided with at least one resistance balancing mechanism and a rope reeling mechanism, wherein the suspension rope is respectively connected to the resistance balancing mechanism and the rope reeling mechanism, and the resistance balancing mechanism comprises: a fixed casing Providing at least one abutting surface; a pulley pivotally connected to the fixed casing, wherein the pulley comprises a rope portion and a shaft portion, and the suspension rope can surround at least one turn on the rope portion, The shaft portion has the same axis as the winding portion and protrudes from one side of the winding portion; and a torsion spring that is tightly coupled to the shaft portion and has at least one end, wherein the pulley rotates in one direction The end of the torsion spring is caused to abut against the abutting surface of the fixed casing, so that the torsion spring is opened to facilitate rotation of the pulley relative to the torsion spring.

According to an embodiment, the fixed housing can be provided with a first side and a second side, and the suspension cord can enter the fixed housing through the first side, and after the winding portion is surrounded by the second The side protrudes from the fixed housing. The first side and the second side may be relatively perpendicular or parallel to each other.

According to an embodiment, the fixed housing may further be provided with a stop piece on the second side, and a slit may be formed between the stop piece and a side edge of the fixed case to provide the suspension rope for use. . The stop piece is slidably assembled to the fixed housing and can be pressed against the suspension rope. In addition, the suspension cord can be wound one or more times on the rope portion.

When the first track is displaced relative to the second track to increase the distance between the first track and the second track, the suspension rope can extend from the rope mechanism and drive the pulley to rotate to promote the twist The end of the spring abuts the abutment surface such that the torsion spring cling to the pulley is distracted and the pulley is thus rotatable relative to the torsion spring.

When the first track is displaced relative to the second track to reduce the distance between the first track and the second track, the sling between the first track and the second track may become a relaxed state. The rope reel mechanism retracts the suspension rope by a spring force.

When the first track and the second track are static, the torsion spring resumes the state of being tight to the pulley such that the pulley no longer rotates.

According to another embodiment, the resistance balancing mechanism is spaced apart from the rope mechanism by a distance.

According to an embodiment, the rope reeling mechanism may include a casing, at least one reel, a coil spring connected to the reel, and at least one guiding pulley, the guiding pulley being slidably mounted on a shaft portion, such that During the winding of the suspension rope, the guiding pulley can be displaced along the shaft portion, so that the suspension rope can be evenly distributed on the drum.

The curtain provided by the invention can control the lifting and lowering of the curtain by pushing or pulling down the rail on the hand, and the operation is not troublesome. In addition, since the control mechanism of the curtain includes a resistance balance mechanism, the shade can be arbitrarily adjusted and accurately stopped at the desired height.

1 and 2 are respectively schematic plan views of a hand-held curtain 100 according to an embodiment of the present invention, wherein the curtain 100 shown in FIG. 1 is in a state of being pulled down, and the curtain 100 shown in FIG. 2 is on the top. A schematic plan view of the receiving state. The hand-held curtain 100 includes a first rail 102, a second rail 104, a shade 106, a suspension cord 108, a resistance balancing mechanism 110, and a rope mechanism 112. The upper and lower opposite sides of the shade 106 may be fixed to the first rail 102 and the second rail 104, respectively. The resistance balancing mechanism 110 and the rope reeling mechanism 112 can be respectively disposed on the second rail 104, wherein the rope reeling mechanism 112 is located between the two resistance balancing mechanisms 110, and the rope reeling mechanism 112 can be separated from the respective resistance balancing mechanisms 110 by a certain distance. To form the control module of the curtain 100. The first end of each suspension cord 108 is secured to the first rail 102, and the second end of the suspension cord 108 relative to the first end is coupled to the cord mechanism 112 by a resistance balancing mechanism 110, respectively. The rope reel mechanism 112 is mainly driven by a spring, and when the second rail 104 is displaced upward, the suspension cord 108 can be wound by the spring force of the rope reel mechanism 112. When the second rail 104 reaches the desired height, the spring force generated by the rope mechanism 112, the weight of the shade 106 plus the second rail 104, and the internal resistance (for example, the resistance generated by the resistance balance mechanism 110), etc. The force can be offset against each other in order to maintain the second track 104 at the desired height.

According to an embodiment, the first track 102 of the window covering 100 can be fixed to the top end of the window, and the second track 104 provided with the resistance balancing mechanism 110 and the rope mechanism 112 can be vertically suspended downward from the first track 102. However, the present invention is not limited thereto, and the second rail 104 provided with the resistance balance mechanism 110 and the rope mechanism 112 may be fixed to the top end of the window, and the first rail 102 may be vertically suspended downward by the second rail 104.

As for the material of the shade 106, it may comprise a fabric, in particular an organ curtain composed of a cloth. However, the shade 106 is not limited thereto, and may be composed of other structures such as a plurality of curtains, a curtain, and the like.

3, 4, 5, and 6 are schematic views showing the resistance balancing mechanism 110, wherein FIG. 3 is a perspective view showing the resistance balancing mechanism 110, and FIG. 4 is a cross-sectional view showing the third drawing. A cross-sectional view of C1, a cross-sectional view of section C2 in Fig. 3, and a bottom view of the resistance balancing mechanism 110 are shown in Fig. 6. As shown in FIGS. 3 to 6, the resistance balancing mechanism 110 can include a fixed housing 114, a rotatable pulley 116, a torsion spring 118, and a stop piece 120. In general, the fixed housing 114 can have an approximately rectangular shape and include a first side 114A and a second side 114B, wherein the first side 114A and the second side 114B of this embodiment can be approximately perpendicular. The first side surface 114A is provided with a through hole 122. The second side surface 114B is formed with a recess 124, and a retaining lug 120 is slidably disposed, so that a slit 126 can be formed between the retaining lug 120 and a side edge 124A of the recess 124 to provide suspension. The rope 108 passes.

In addition, the inner side of the fixed housing 114 may be provided with a first accommodating space 128A and a second accommodating space 128B. The first accommodating space 128A and the second accommodating space 128B are separated by a side wall 130. The first accommodating spaces 128A communicate with the nips 126 of the first side surface 114A and the nips 126 of the second side surface 114B.

The pulley 116 includes a winding portion 116A and a shaft portion 116B. The shaft portion 116B has the same axis as the winding portion 116A and protrudes from one side of the winding portion 116A, and includes a pulley portion 116A and a pulley portion of the shaft portion 116B. 116 can be integrally formed. When the pulley 116 is pivotally connected to the fixed housing 114, the winding portion 116A is disposed in the first accommodating space 128A, and the shaft portion 116B is disposed in the second accommodating space 128B through the opening of the side wall 130. Therefore, when the pulley 116 rotates relative to the fixed housing 114, the rope portion 116A and the shaft portion 116B can rotate synchronously about the same axis.

The torsion spring 118 is attached to the peripheral surface of the shaft portion 116B. According to an embodiment, the torsion spring 118 is, for example, a two-way torsion spring, and the two ends 118A, 118B are respectively disposed adjacent to the two abutting faces 132 of the fixed housing 114 in the second accommodating space 128B.

The suspension cord 108 enters the first accommodating space 128A through the through hole 122 of the first side surface 114A, and after about one and a half turns on the rope portion 116A, and then protrudes from the second side surface 114B through the slit 126, so that the suspension rope 108 is suspended. The cord 108 extends approximately perpendicular to each other in a direction perpendicular to the first end 108A before passing the first side 114A and the second end 108B extending beyond the second side 114B, wherein the suspension cord 108 passes through the second end of the slit 126 The portion 108B is in contact with the side edge 124A of the stopper piece 120 and the groove 124 by receiving the stopper piece 120. It is worth mentioning that because the suspension rope 108 can surround the surface of the pulley 116 (i.e., at least one turn or more), the contact surface between the suspension rope 108 and the pulley 116 is increased, thereby generating suitable resistance for balance. The total force received by the second track 104 allows the second track 104 to maintain a stable equilibrium static at any height.

7 and 8 respectively show a front side view and a plan view of the rope reeling mechanism 112, and a ninth drawing shows a partial cross-sectional view of the rope winding mechanism 112. The rope reel mechanism 112 includes a casing 140, two reels 142, two coil springs 143, and two guide pulleys 144. Opposite sides of the outer casing 140 are respectively provided with openings 146, 148 to provide passage of the two suspension cables 108. The two guiding pulleys 144 are slidably mounted on the two shaft portions 145 adjacent to the two openings 146, 148, respectively, so that the guiding pulleys 144 can be vertically displaced relative to the shaft portion 145, respectively.

Each of the reels 142 is pivotally connected to the outer casing 140, and a gear 150 is fixed to the top of each reel 142. The pivot of the spool 142 is parallel to the shaft portion 145 and approximately perpendicular to the axis of the pulley 116. In addition, a pivot 152 is pivotally connected between the two reels 142 in the outer casing 140. The pivot 152 is approximately parallel to the pivot of the spool 142, and a linkage gear 154 is secured to the top of the pivot 152. The interlocking gears 154 are gears 150 that are respectively engaged with the two reels 142 so that the two reels 142 can be rotated synchronously to simultaneously rewind or release the suspension cords 108.

A pressing arm 156 is also provided adjacent each of the reels 142 to ensure that the suspension cord 108 is wound close to the reel 142. The first end of the pressing arm 156 can be pivotally coupled to the outer casing 140, and the second end of the pressing arm 156 can press the suspension cord 108 onto the surface of the spool 142. As the suspension cord 108 is gradually retracted onto the reel 142, the compression arm 156 can be displaced through its pivot point adjustment.

As shown in FIG. 9, the coil springs 143 are respectively mounted in the reel 142. The first end of the coil spring 143 can be fixed to the outer casing 140, and the second end of the coil spring 143 can be fixed to the reel 142. The elastic force of the coil spring 143 causes the spool 142 to rotate in the direction of winding the suspension cord 108.

When the rope reeling mechanism 112 is installed, the two suspension ropes 108 extend into the interior of the outer casing 140 through the openings 146 and 148, respectively, and are wound around the two guiding pulleys 144, and then connected and retracted to the two reels 142. The reel 142 can be rotated by the elastic force of the coil spring 143 to retract the suspension cord 108, and during the winding of the suspension cord 108, the guide pulley 144 can be displaced along the shaft portion 145 to facilitate the suspension rope. The coil of 108 can be evenly distributed over the surface of the spool 142.

The operation method of the curtain 100 will be described later with reference to FIGS. 1 to 11. Referring first to Figures 1 and 3 to Figure 9, when the user pulls down the second track 104 along the arrow F1 (i.e., in the direction of increasing the distance between the first track 102 and the second track 104), each suspension The cord 108 will extend from the spool 142 to cause the spool 142 to rotate. At the same time, the suspension cord 108 extending from the reel 142 also drives the pulley 116 to rotate in one direction (for example, in the counterclockwise direction in FIG. 5), causing the end 118A of the torsion spring 118 to abut against the abutment surface 132, and the tension pulley The torsion spring 118 of 116 is thus disengaged so that the pulley 116 is smoothly rotated relative to the torsion spring 118. Therefore, the length of the suspension cord 108 between the first rail 102 and the second rail 104 will gradually become longer.

When the user stops pulling down the second track 104 (ie, the first track 102 and the second track 104 are static), the torsion spring 118 resumes the state of being tightly engaged with the pulley 116 such that the pulley 116 is no longer rotated, and the pulley 116 is suspended. The sling 108 creates resistance. Therefore, the elastic force applied to the reel 142 by the coil spring 143 can offset the gravity applied to the second rail 104, the resistance generated by the resistance balance mechanism 110, and the resistance of other internal components, so that the reel 142 stops rotating. Due to the state in which the total applied force received by the second track 104 is balanced, the second track 104 can be stably stopped at the desired position.

As shown in FIG. 2, when the user picks up the second track 104 up the arrow F2 (i.e., in the direction of decreasing the distance between the first track 102 and the second track 104), the first track 102 and the second track 104 The intermediate suspension cord 108 can be changed to a relaxed state, and the spool 142 of the rope reel mechanism 112 will be rotated in the opposite direction to retract the suspension cord 108. With reference to FIG. 2, FIG. 10 to FIG. 12 are schematic diagrams showing the state of the resistance balancing mechanism 110 during the upward displacement of the second rail 104, wherein FIG. 10 is a perspective view showing the resistance balancing mechanism 110, FIG. FIG. 12 is a cross-sectional view showing a section C1 in FIG. 10, and FIG. 12 is a cross-sectional view showing a section C2 in FIG. During the reeling of the suspension cord 108 by the reel 142, the suspension cord 108 between the resistance balancing mechanism 110 and the reeling mechanism 112 is maintained in a taut state due to the action of the detent 120, and does not knot. Therefore, the suspension cord 108 can be retracted on the reel 128 without tying and smoothly sliding around the circumference of the pulley 116. Therefore, the length of the suspension cord 108 between the first rail 102 and the second rail 104 is gradually shortened.

When the user stops picking up the second track 104, the torsion spring 118 resumes the state of being tightly engaged with the pulley 116 such that the pulley 116 is no longer rotated, and the suspension cord 108 creates resistance due to the enlarged contact area with the pulley 116. Therefore, the elastic force applied by the coil spring 143 to the reel 142 can offset the gravity applied to the second rail 104, the resistance generated by the resistance balance mechanism 110, and the resistance of other internal components, so that the reel 142 stops rotating, so the second The track 104 can be stopped at the desired location.

The second rail 104 can be stopped at any position by the above control mechanism. With respect to the working range of the coil spring 143 in the rope mechanism 112, even if the adjustment of the second rail 104 reaches its boundary, the resistance generated by the resistance balancing mechanism 110 can sufficiently balance the spring force of the rope mechanism 112 so that the curtain 100 can provide Smooth operation and stable stop. In addition to the above embodiments, the resistance balancing mechanism can also be used in conjunction with other reel mechanisms.

FIG. 13 is a schematic view showing the use of the resistance balancing mechanism 210 in combination with the embodiment of the other rope reel mechanism 212, and FIG. 14 is a schematic view showing the internal structure of the rope winding mechanism 212. As shown in Fig. 13, the resistance balancing mechanism 210 can be combined with the rope reel mechanism 212 to form a control module. The resistance balancing mechanism 210 has an approximate structure with the above-described resistance balancing mechanism 110, and includes a fixed housing 214, a rotatable pulley 216, and a torsion spring 218. The pulley 216 is pivotally connected to the fixed housing 214 and includes a winding portion 216A and a shaft portion 216B. The shaft portion 216B has the same axis as the winding portion 216A and protrudes from one side of the winding portion 216A. The rope portion 216A and the shaft portion 216B are synchronously rotatable about the same axis.

The torsion spring 218 is tightly coupled to the peripheral surface of the shaft portion 216B, and the two ends 218A, 218B of the torsion spring 218 are respectively disposed adjacent to the two abutting faces 232 of the fixed housing 214.

The suspension cord 108 enters the resistance balancing mechanism 210 from one side of the resistance balancing mechanism 210, and about one and a half turns on the rope portion 216A, and then protrudes from the other side of the resistance balancing mechanism 210, so that the suspension cord 108 The first end before passing through the resistance balancing mechanism 210 and the second end extending beyond the resistance balancing mechanism 210 extend approximately in different directions.

Referring to Figures 13 and 14, the rope reel mechanism 212 can include a casing 240 having a connecting plate 240A disposed on one side thereof to provide a suspension resistance balancing mechanism 110. After the suspension cord 108 passes through the resistance balancing mechanism 210, it can enter the outer casing 240 through the perforations 242 for connection with the internal components of the rope reel mechanism 212.

As shown in Fig. 14, the rope reel mechanism 212 may be provided with a reel 244 and a coil spring 246 in the outer casing 240. One side of the reel 244 can be coupled to a hollow shaft portion 248, wherein the reel 244 and the hollow shaft portion 248 can be integrally formed or fixed to each other. The inner side of the outer casing 240 defines at least one first accommodating space 240B and one second accommodating space 240C, and the reel 244 can be disposed in the first accommodating space 240B, and the hollow shaft portion 248 is disposed in the second accommodating space 240C. The reel 244 and the hollow shaft portion 248 are pivotable relative to the outer casing 240 about the same axis. At the time of installation, the reel 244 and the hollow shaft portion 248 can also receive a drive shaft 310 (shown in phantom) therethrough for connection with other reel mechanisms.

The coil spring 246 surrounds the hollow shaft portion 248 and is disposed in the second accommodating space 240B, wherein the first end of the coil spring 246 is connectable with the hollow shaft portion 248, and the second end of the coil spring 246 is connectable to the outer casing 240.

The suspension cord 108 extends through the perforations 242 to the first receiving space 240B and is coupled to the spool 244. The elastic force of the coil spring 246 causes the spool 244 to rotate in the direction of winding the suspension cord 108.

13 and FIG. 14, FIG. 15 is a schematic view showing the curtain 300 provided with the resistance balancing mechanism 210 and the rope mechanism 212. The curtain 300 includes a first rail 302, a second rail 304 provided with a resistance balancing mechanism 210 and a rope mechanism 212, and a shade 306 connected between the first rail 302 and the second rail 304. The second track 304 of the window covering 300 can be fixed to the top end of the window, and the first track 302 can be vertically suspended downward by the second track 304.

A drive shaft 310, a plurality of resistance balancing mechanisms 210 and a rope reel mechanism 212 may be disposed in the second rail 304. The drive shaft 310 can be mounted through the outer casing 240, the hollow shaft portion 248 and the reel 244 of each rope reel mechanism 212 to define a hollow shaft portion 248 and a pivot shaft of the reel 244 such that the transmission shaft 310 can be associated with each reel mechanism The hollow shaft portion 248 of the 212 and the spool 244 are synchronously rotatable.

The suspension cords 108 (shown in dashed lines) are respectively connected between the rope reel mechanism 212 and the first rail 302, that is, the first end of the suspension rope 108 can be connected to the reel 244 of the rope reel mechanism 212, suspended The second end of the cord 108 is then secured to the first track 302.

As with the above embodiment, when the user pulls down the first track 302, each of the suspension cords 108 will extend from the spool 244 of the rope reel mechanism 212, thereby causing the spool 244 to rotate. At the same time, the suspension cord 108 extending from the reel 244 also drives the pulley 216 to rotate, so that the end 218A of the torsion spring 218 abuts against the abutment surface 232, and the torsion spring 218 of the tension pulley 216 is thus opened to make the pulley 216 smooth. The ground rotates relative to the torsion spring 218. When the user stops pulling down the first track 302, the torsion spring 218 resumes the state of being tightened to the pulley 216 such that the pulley 216 is no longer rotating, and the suspension cord 108 creates resistance due to the enlarged contact area with the pulley 216. Therefore, the elastic force applied by the coil spring 246 to the reel 244 can offset the gravity applied to the first rail 302, the resistance generated by the resistance balance mechanism 210, and the resistance of other internal components, so that the reel 244 stops rotating, so the first The track 302 can be stopped at the desired location.

As shown in Fig. 16, when the user picks up the first track 302, the sling 108 between the first track 302 and the second track 304 will become slack, and the reel 244 of the reel mechanism 212 will face Rotate in the opposite direction to retract the suspension cord 108. When the user stops moving up the first track 302, the torsion spring 218 resumes the state of being tightened to the pulley 216 such that the pulley 216 is no longer rotating, and the suspension cord 108 creates resistance due to the enlarged contact area with the pulley 216. Therefore, the elastic force applied by the coil spring 246 to the reel 244 can offset the gravity applied to the first rail 302, the resistance generated by the resistance balance mechanism 210, and the resistance of other internal components, so that the reel 244 stops rotating, so the first The track 302 can be stopped at the desired location.

The resistance balancing mechanism provided by the present invention may be implemented by other embodiments in addition to the above structures. For example, although the above embodiment uses a two-way torsion spring, the resistance balancing mechanism can also be implemented by a one-way torsion spring, as shown in FIGS. 17 and 18.

17 is a cross-sectional view showing another resistance balancing mechanism 410, and FIG. 18 is a bottom view showing the resistance balancing mechanism 410. The resistance balancing mechanism 410 can be similar to the previous embodiment and includes a stationary housing 414, a rotatable pulley 416, a torsion spring 418, and a stop tab 420. The pulley 416 is pivotally connected to the fixed housing 414 and includes a winding portion 416A and a shaft portion 416B. The shaft portion 416B has the same axis as the winding portion 416A and protrudes from one side of the winding portion 416A. The rope portion 416A and the shaft portion 416B are synchronously rotatable about the same axis. The torsion spring 418 is a one-way torsion spring having a distal end 418A that is tightly bound to the peripheral surface of the shaft portion 416B of the pulley 416, and the end 418A of the torsion spring 418 is fixed to the fixed housing 414. The suspension cord 108 then enters the resistance balancing mechanism 410 from the first side 414A of the resistance balancing mechanism 410, about one and a half turns on the winding portion 416A of the pulley 416, passes through the stop tab 420 and is supported by the resistance balancing mechanism 410. The second side 414B extends.

The operation of the resistance balancing mechanism 410 is the same as that of the above embodiment. When the user pulls down the second track (ie, the track suspended by the first track), the extended suspension cord 108 can drive the pulley 416 to rotate in one direction, causing the torsion spring 418 tightened to the pulley 416 to open. The pulley 416 is smoothly rotated relative to the torsion spring 418. Therefore, the length of the suspension cord 108 between the first rail and the second rail gradually becomes longer. When the user stops pulling down the second track (ie, the first track and the second track are static), the torsion spring 418 resumes the state of being tightly engaged with the pulley 416 such that the pulley 416 is no longer rotated, and the pulley 416 is suspended by a plurality of turns. The slings 108 create resistance so that the urging forces received by the second trajectory can be balanced with each other so that the second trajectory is stably stopped at the desired position.

In addition to the steering of the suspension cord 108, the above-described resistance balancing mechanism can be placed in other positions, as shown in Fig. 19. In Fig. 19, the sling 108 can be steered via a pulley 502, enter the resistance balancing mechanism 510 through the first side 514A, about one turn on the pulley 516, pass through the stop 520 and be supported by the resistance balancing mechanism 510. The second side 514B extends to connect with the cord mechanism 112/212. As with the previous embodiment, the resistance balancing mechanism 510 can be provided with a torsion spring (not shown) that is tightly coupled to the pulley 516. The second side 514B is approximately parallel to the first side 514A such that the entry resistance balancing mechanism 510 and the suspension cord 108 extending from the resistance balancing mechanism 510 are all parallel to the same direction.

The curtain provided by the invention is provided with no operating rope, and the lifting and lowering of the curtain is controlled by the hand to push or lower the rail, so that the operation is not troublesome, and the child is prevented from being entangled by the operating rope because of the play. danger. In addition, since the control mechanism of the curtain includes a resistance balance mechanism, the shade can be arbitrarily adjusted and accurately stopped at the desired height.

The above description is based on a number of different embodiments of the invention, wherein the features may be implemented in a single or different combination. Therefore, the disclosure of the embodiments of the present invention is intended to be illustrative of the embodiments of the invention. Further, the foregoing description and the accompanying drawings are merely illustrative of the invention and are not limited. Variations or combinations of other elements are possible and are not intended to limit the spirit and scope of the invention.

100. . . curtain

102. . . First track

104. . . Second track

106. . . Blind curtain

108. . . Suspension rope

110. . . Resistance balance mechanism

112. . . Rope mechanism

114. . . Fixed housing

114A. . . First side

114B. . . Second side

116. . . pulley

116A. . . Rope section

116B. . . Shaft

118. . . Torsion spring

120. . . Stop rope

122. . . perforation

124. . . Groove

124A. . . Side edge

126. . . Slit

128A. . . First accommodation space

128B. . . Second accommodation space

130. . . Side wall

132. . . Abutment surface

140. . . shell

142. . . reel

143. . . Coil spring

144. . . Guide pulley

146, 148. . . Opening

145. . . Shaft

150. . . gear

152. . . Pivot

154. . . Linkage gear

156. . . Pressing arm

210. . . Resistance balance mechanism

212. . . Rope mechanism

214. . . Fixed housing

216. . . pulley

216A. . . Rope section

216B. . . Shaft

218. . . Torsion spring

232. . . Abutment surface

240. . . shell

240A. . . Connection plate

242. . . perforation

244. . . reel

246. . . Coil spring

248. . . Hollow shaft

240B. . . First accommodation space

240C. . . Second accommodation space

300. . . curtain

302. . . First track

304. . . Second track

306. . . Blind curtain

310. . . transmission shaft

410. . . Resistance balance mechanism

414. . . Fixed housing

416. . . pulley

418. . . Torsion spring

420. . . Stop rope

416A. . . Rope section

416B. . . Shaft

510. . . Resistance balance mechanism

502. . . pulley

516. . . pulley

520. . . Stop rope

FIG. 1 is a schematic plan view showing a hand-held curtain according to an embodiment of the present invention in a pull-down state.

FIG. 2 is a schematic plan view showing the curtain of FIG. 1 in an upward state.

Fig. 3 is a perspective view showing a resistance balance mechanism provided in the curtain of Fig. 1.

Fig. 4 is a cross-sectional view showing a section C1 in Fig. 3.

Fig. 5 is a cross-sectional view showing a section C2 in Fig. 3.

Figure 6 is a bottom view showing the resistance balancing mechanism.

Fig. 7 is a front elevational view showing a rope reel mechanism provided in the curtain of Fig. 1.

Figure 8 shows a top view of the rope reel mechanism.

Figure 9 is a partial cross-sectional view showing the rope reel mechanism.

Figure 10 is a perspective view showing the state of the resistance balance mechanism during the upward displacement of the second track.

Fig. 11 is a cross-sectional view showing a section C1 in Fig. 10.

Fig. 12 is a cross-sectional view showing a section C2 in Fig. 10.

FIG. 13 is a schematic diagram showing the combination of the resistance balancing mechanism and the rope reeling mechanism into a control module according to another embodiment of the present invention.

Fig. 14 is a view showing the internal structure of the rope winding mechanism in Fig. 13.

Fig. 15 is a schematic view showing a curtain provided with the resistance balance mechanism and the rope reeling mechanism of Fig. 13 according to an embodiment of the present invention.

Figure 16 is a schematic view showing the curtain of Figure 15 in an up state.

Figure 17 is a cross-sectional view showing another embodiment of the resistance balancing mechanism.

Figure 18 is a bottom plan view showing the resistance balancing mechanism of Figure 17.

FIG. 19 is a schematic view showing a resistance balancing mechanism according to still another embodiment of the present invention.

100. . . curtain

102. . . First track

104. . . Second track

106. . . Blind curtain

108. . . Suspension rope

110. . . Resistance balance mechanism

112. . . Rope mechanism

Claims (19)

A resistance balancing mechanism for a curtain comprises: a fixed housing provided with at least one abutting surface; a pulley pivotally connected to the fixed housing, wherein the pulley comprises a winding portion and a shaft portion, the roller The rope portion may be surrounded by a suspension rope, the shaft portion having the same axis and protruding from one side of the rope portion; and a torsion spring for tightening the shaft portion and having at least one An end, wherein the pulley rotates in a direction to urge the end of the torsion spring against the abutting surface of the fixed casing, so that the torsion spring is widened to facilitate rotation of the pulley relative to the torsion spring. The resistance balancing mechanism of claim 1, wherein the fixed housing is provided with a first side and a second side, and the suspension cord can enter the fixed housing through the first side, After the portion is surrounded, the second side protrudes from the fixed housing. The resistance balancing mechanism of claim 2, wherein the first side and the second side are relatively perpendicular. The resistance balancing mechanism of claim 2, wherein the first side and the second side are approximately parallel to each other. The resistance balancing mechanism of claim 2, wherein the fixed housing further has a stop piece on the second side, and a slit is formed between the stop piece and a side edge of the fixed case To provide the suspension rope for use. The resistance balancing mechanism of claim 5, wherein the stop piece is slidably assembled to the fixed casing and can be pressed against the suspension rope. The resistance balancing mechanism of claim 1, wherein the suspension rope can be wound on the rope portion by one or more turns. A curtain comprising: a first track; a second track; a shade disposed between the first track and the second track; and at least one suspension cord connected to the first track and the first Between the two rails; wherein the second rail is provided with at least one resistance balancing mechanism and a rope reeling mechanism, wherein the suspension rope is respectively connected to the resistance balancing mechanism and the rope reeling mechanism, and the resistance balancing mechanism comprises a fixed housing having at least one abutting surface; a pulley pivotally connected to the fixed housing, wherein the pulley includes a winding portion and a shaft portion, the hanging rope can surround the winding portion At least one turn, the shaft portion has the same axis as the rope portion and protrudes from one side of the rope portion; and a torsion spring that tightly bundles the shaft portion and has at least one end, wherein the pulley is When the rotation is performed in one direction, the end of the torsion spring is caused to abut against the abutting surface of the fixed casing, so that the torsion spring is opened to facilitate the rotation of the pulley relative to the torsion spring. The curtain according to claim 8, wherein the fixed housing is provided with a first side and a second side, and the suspension cord can enter the fixed housing through the first side, and surround the winding portion Thereafter, the second side protrudes from the fixed housing. The drapes of claim 9, wherein the first side and the second side are relatively perpendicular. The drapes of claim 9, wherein the first side and the second side are approximately parallel to each other. The curtain according to claim 9, wherein the fixed casing further has a retaining lug on the second side, and a slit is formed between the retaining lug and a side edge of the fixed casing to The suspension rope is provided for use. The drapes of claim 12, wherein the sling is slidably assembled to the fixed housing and can be pressed against the sling. The drapes of claim 8, wherein the sling can be wound one or more times on the rope portion. The curtain according to claim 8, wherein when the first track is displaced relative to the second track to increase the distance between the first track and the second track, the sling will be from the roll The cord mechanism extends and drives the pulley to rotate to urge the end of the torsion spring against the abutment surface such that the torsion spring that is tight to the pulley is distracted, and the pulley is thus rotatable relative to the torsion spring. The curtain according to claim 8, wherein the first track and the second track are opposite when the first track and the second track are relatively displaced to reduce a distance between the first track and the second track. The sling between the rails can be in a relaxed state, and the cord mechanism will retract the sling by a spring force. The curtain of claim 8, wherein when the first track and the second track are static, the torsion spring returns to a state of being tight to the pulley such that the pulley no longer rotates. The curtain of claim 8, wherein the resistance balancing mechanism is spaced apart from the rope mechanism by a certain distance. The curtain according to claim 8, wherein the rope reel mechanism comprises a casing, at least one reel, a coil spring connected to the reel, and at least one guiding pulley, the guiding pulley is slidably mounted The utility model is disposed on a shaft portion, so that the guiding pulley can be displaced along the shaft portion during the winding process, so that the suspension rope can be evenly distributed on the reel.