CN102733746B - curtain drive - Google Patents

Abstract

The present invention discloses a transmission device for curtains, which comprises a frame, a reel, a main spring, a spring shaft, an oil pressure damper, a torsion spring, a positioning group and a curtain group; after the curtain of the curtain group is pulled down to any height, as long as the force is stopped, the main spring that would originally rotate in the opposite direction will be prevented from rotating by the positioning group, thereby allowing the curtain to stop at any height, and no matter what height the curtain stops at, only the curtain needs to be pulled down once and then released immediately, so that the positioning group will no longer prevent the main spring from rotating, and then the main spring will rotate with the reel, thereby causing the curtain to automatically roll up to the position. The present invention thereby achieves the purpose of stopping the curtain of the curtain at any height and being able to easily automatically roll the curtain up.

Description

curtain drive

technical field

The invention relates to a curtain device, in particular to a transmission device for the curtain.

Background technique

Curtains are decorative appliances used in many buildings in today's society. According to the difference of the curtain and its structure, it can be divided into pleated shade, honey comb and Romanshade. Yet no matter be above-mentioned which kind of type, the transmission device of its control curtain cloth is all similar.

Most of the existing curtains are equipped with a pull cord to control the pulling up and down of the curtain. However, when the transmission device pulls up the curtain, the pull cord will also move upward, which may cause accidental injuries such as strangling the human body. Therefore, the new curtains are all improved to the type without pull cord, and the transmission device is also improved. The transmission device is to set a torsion spring in the frame, one end of the torsion spring is connected to a connecting rope, and the other end of the connecting rope is connected to the lower rail. The upper end of the curtain is connected to the frame and the lower end is connected to the lower rail. By making the torsion force of the torsion spring equal to the weight of the curtain and the lower rail, and offsetting each other, the curtain can be pulled down to any place, and after the force is stopped, the curtain will be Can be stopped at this height, thereby replacing existing pull cords.

Although the improved transmission device has the advantages of releasing and stopping at any time, it also has the disadvantage that it cannot be rolled up automatically, especially when the curtain is installed at a high place, for users who are not tall enough, it is more difficult to roll up the curtain. It's a big problem.

Contents of the invention

In view of the above-mentioned deficiency and limitation that the existing improved transmission device cannot automatically roll up, the present invention provides a curtain transmission device, which can stop the curtain at any height and easily make the curtain automatically roll up.

In order to achieve the aforementioned object of the invention, the technical means adopted in the present invention is to design a transmission device for curtains, which includes:

a frame, which is hollow tubular;

a roll tube, which is rotatably passed through the frame;

A main spring, which is a torsion spring and is installed in the coil tube, and one end of the main spring is fixed with the coil tube;

a spring shaft, which passes through the main spring;

An oil pressure damper, which is fixed to the end of the coil tube with the main spring fixed, and has a steering rod, which produces a buffer function in the direction of rotation by relatively rotating the oil pressure damper and the steering rod;

A torsion spring, which is sleeved and tightened outside the steering rod of the hydraulic damper, and a spring shaft is fixed at one end;

A positioning group, which is fixed on the frame and includes a rotating seat, a track seat and a ball, the rotating seat is hollow tubular and fixed on the coil tube, and an axial groove is concavely formed on the inner wall of the rotating seat, The outer end of the track seat is fixed on the frame and passed through the rotating seat, the inner end of the track seat is fixed on the main spring and the spring shaft, and the outer wall of the track seat is concavely provided with two interlinked first and second tracks. There are multiple guide blocks between the two tracks, and the balls are movably arranged between the axial groove of the rotary seat and the track seat. When the rotary seat rotates, the balls are controlled to move around through the axial grooves, and cooperate with the Each guide block is switched to move on the first and second tracks; and

A curtain group, which is installed under the frame, has a curtain connected with a roll tube, and the lift of the curtain is controlled by the roll tube.

The transmission device of the curtain is characterized in that: the track seat of the positioning group further includes a track part and a joint part from the outside to the inside, the track part is passed through the rotating seat and the outer end is fixed with a frame, and the joint part runs through and rotates The seat and the main spring are fixed at the inner end;

The outer wall of the track part is formed with a right flange, a left flange, two right guide blocks, two lower guide blocks, two upper guide blocks and two left guide blocks, and the right flange and the left flange are respectively radial Embossing is formed around the inner and outer ends of the outer wall of the track portion. Each guide block can be divided into the same two groups and connected circularly. Each group includes a right guide block, a left guide block, and a bottom guide block. And an upper guide block, the right guide block is extended and formed on the outside of the right flange, the left guide block is extended and formed on the inside of the left flange, the upper guide block and the lower guide block are located on the left flange and the right flange The upper guide block is located in the counterclockwise direction of the lower guide block; the first track is between the upper and lower guide blocks and the right flange; the second track is between the upper and lower guide blocks and the left flange. track.

The transmission device of the curtain is characterized in that: it further has a half hydraulic group, and the half hydraulic group is fixed to the frame, and includes a positive column, an outer tube, an inner tube, a hydraulic damper and a torque The spring, the positive column is fixed to the frame and is sequentially composed of an external thread section, a square section and a guiding part from the outside to the inside. The guiding part is a hemispherical end and obliquely connected to the end angle of the square section. The outer tube fixes the direction of rotation It is sleeved on the coiled tube and screwed to the outer threaded section of the positive column. The outer tube is hollow and has openings at both ends. The inner tube is pierced through the outer tube and is hollow and has two ends. The shape of the inner wall corresponds to the square section of the positive column. The inner tube can be axially moved and fitted in the square section of the positive column. The hydraulic damper has a steering rod, which is generated by relatively rotating the hydraulic damper and the steering rod. For the buffering function in the direction of rotation, the steering rod is installed in the inner tube, the oil pressure damper is fixed on the outer tube, the torsion spring is sleeved and tightened outside the steering rod, and one end of the torsion spring is fixed on the inner tube.

The transmission device for the curtain is characterized in that it further includes at least one wire take-up group, and the curtain cloth group further has a connecting rope. The wheel seat is fixed on the frame and sleeved outside the coil tube. The wheel seat is hollow tubular with openings at both ends and internal threads. The take-up wheel is threaded into the wheel seat and sleeved outside the coil tube in a non-rotatable form. The take-up reel is hollow tubular with openings at both ends and external threads, and the upper end of the connecting rope is wound on the external threads of the take-up reel.

The transmission device for the curtain is characterized in that it further has a pull cord connected to the lower end of the cord set.

The advantage of the present invention is that after the curtains of the curtain group are pulled down to any height, as soon as the force is stopped, the main spring, which would otherwise rotate in the opposite direction, will be prevented from rotating by the positioning group, thereby allowing the curtains to stop at any height. Regardless of the height at which the curtain stops, just pull down the curtain and release it immediately, so that the positioning group no longer prevents the main spring from rotating, and then the main spring rotates with the coil tube, and then the curtain is automatically rolled up to the position . In this way, the present invention achieves the purpose of stopping the curtain at any height and making the curtain automatically roll upwards easily.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the perspective view of the present invention;

Figure 2 is an exploded view of most of the components of the present invention;

Fig. 3 is a top sectional view of the present invention;

Figure 4 is an exploded view of the components of the positioning group of the present invention;

Fig. 5 is a top view of the track seat of the present invention;

Fig. 6 is a side view of the track seat of the present invention;

Figure 7 is an exploded view of the assembly of the wire take-up group of the present invention;

Fig. 8 is a schematic diagram of the cord of the present invention unfolded to half;

Fig. 9 is a schematic view showing that the curtain of the present invention is fully expanded;

Fig. 10 is a schematic diagram of the ball trajectory when the curtain of the present invention is pulled down;

Fig. 11 is a schematic diagram of the ball track at another angle when the curtain of the present invention is pulled down;

Fig. 12 is a schematic diagram of the ball trajectory when the curtain of the present invention stops at any height;

Fig. 13 is a schematic diagram of the slightly pulled-down ball trajectory after the curtain of the present invention stops;

Fig. 14 is a schematic diagram of the ball trajectory when the curtain of the present invention is closed;

Fig. 15 is a schematic diagram of the ball track at another angle when the curtain of the present invention is retracted;

Fig. 16 is a schematic diagram of the ball trajectory of the curtain cloth of the present invention and then pulled down again;

Figure 17 is an exploded view of some components of the present invention;

Figure 18 is an exploded view of most of the components of the first embodiment of the present invention;

Fig. 19 is an exploded view of the semi-hydraulic group of the first embodiment of the present invention;

Fig. 20 is a side sectional view of the inner tube fitted with the positive column according to the first embodiment of the present invention;

Fig. 21 is a side sectional view of the inner tube detached from the positive column according to the first embodiment of the present invention;

Fig. 22 is a schematic diagram of a second embodiment of the present invention.

Detailed ways

The technical means adopted by the present invention in order to achieve the intended purpose of the invention will be further described below in conjunction with the accompanying drawings and preferred embodiments of the present invention.

Please refer to Fig. 1 to Fig. 3 and shown in Fig. 17, the transmission device of the curtain of the present invention comprises a frame 11, at least one take-up group 30, a roll tube 12, a main spring 13, a spring shaft 21, an oil pressure The damper 22, a torsion spring 23, a steering member 24, two side covers 16, a positioning group 40 and a curtain group. In this embodiment, there are two wire take-up groups 30 .

The aforementioned frame 11 is hollow tubular.

Please refer to Fig. 2 and shown in Fig. 7, aforesaid wire take-up group 30 is installed in frame 11, and comprises wheel base 31, a wire take-up wheel 32, two balls 33 and a blocking member 34, and wheel base 31 is fixed The frame 11, the wheel seat 31 are hollow tubular with openings at both ends and internal threads 311, the take-up wheel 32 is threaded and screwed in the wheel seat 31, the take-up wheel 32 is hollow tubular with openings at both ends and external threads 321, The inner wall surface of the take-up wheel 32 is concavely formed with two ball grooves 322, the ball grooves 322 communicate with one end opening of the take-up wheel 32, the two balls 33 are respectively located in the two ball grooves 322, and the blocking member 34 is fitted to the take-up wheel 32 The ball groove 322.

The above-mentioned roll tube 12 is rotatably installed in the frame 11 and in the take-up wheel 32 of the take-up group 30. The outer wall of the roll tube 12 is concavely formed with two grooves 121, and the two grooves 121 are respectively Corresponding to the two ball grooves 322 of the take-up wheel 32, the balls 33 of the line take-up group 30 are also located in the groove 121, through the ball grooves 322 of the take-up wheel 32, the groove 121 and the balls 33 of the winding tube 12, the winding The tube 12 and the take-up wheel 32 have a fixed rotation direction and can move relative to each other in the axial direction.

Please refer to FIG. 2 and FIG. 17 , the above-mentioned main spring 13 is passed through the coil tube 12 , and the coil tube 12 is fixed at the inner end, and the main spring 13 is a torsion spring.

The aforementioned spring shaft 21 passes through the main spring 13 .

The aforementioned hydraulic damper 22 is fixed to the end of the coil tube 12 with the main spring 13 fixed, and has a steering rod 221 . By relatively rotating the hydraulic damper 22 and the steering rod 221 , a buffering function in the direction of rotation is produced.

The aforementioned torsion spring 23 is sheathed and tightened outside the steering rod 221 of the hydraulic damper 22 .

The outer end of the aforementioned steering member 24 is fixed with the end of the torsion spring 23 , and the inner end is fixed with the spring shaft 21 . The aforementioned two side covers 16 are respectively mounted on two ends of the frame 11 .

Please refer to Fig. 2 and Fig. 4, the aforesaid positioning group 40 is fixed with the corresponding side cover 16, and includes a swivel seat 41, a track seat 42 and a ball 43, and the outer wall of the swivel seat 41 is fixed with a roll tube. The inner wall surface of 12 is hollow tubular and has openings at both ends. The inner wall surface of the rotating seat 41 is concavely formed with an axial groove 411. The track seat 42 is penetrated in the rotating seat 41 and contains a track from the outside to the inside. part 421 and a joint part 422, the track part 421 is penetrated in the rotating seat 41, and the outer end is fixed with the side cover 16, and the outer wall surface of the track part 421 is concavely provided with two interlinked first and second tracks 57, 58, A plurality of guide blocks are arranged between the two rails 57, 58, the joint part 422 runs through the rotating base 41, and the inner end is fixed with the main spring 13 and the spring shaft 21, and the ball 43 is movably arranged in the axial groove of the rotating base 41. Between the groove 411 and the track seat 42, when the rotary seat 41 rotates, the axial groove 411 controls the ball 43 to follow the orbital movement, and cooperates with each guide block to switch between the first and second track 57, 58 to move.

Please refer to Fig. 4 to Fig. 6, in this definition, the clockwise direction and counterclockwise direction mentioned next are viewed from the outer end to the inner end of the track seat 42, and the right side of Fig. 5 and Fig. 6 It is the inner end of track seat 42, and the left side is the outer end.

The outer wall surface of track portion 421 is formed with a right flange 51, a left flange 52, two right guide blocks 53, two left guide blocks 54, two lower guide blocks 55 and two upper guide blocks 56, and the right flange 51 and the left flange 52 are respectively radially raised and formed around the right end and the left end of the outer wall surface of the track portion 421. Each guide block can be divided into two groups of the same and circularly connected. The left guide block 54, the lower guide block 55 and an upper guide block 56, the right guide block 53 are extended and formed on the left side of the right flange 51, and the two left guide blocks 54 are extended and formed on the right side of the left flange 52. Side; the upper guide block 56 and the lower guide block 55 are located between the left flange 52 and the right flange 51, and the upper guide block 56 is located in the counterclockwise direction of the lower guide block 55; the upper and lower guide blocks 56 , 55 and the right flange 51 is the first track 57; between the upper and lower guide blocks 56, 55 and the left flange 52 is the second track 58; the ball 43 is movably arranged in the axial direction of the rotating seat 41 Between the groove 411 and the track part 421 of the track seat 42;

When the ball 43 rotates clockwise along the first track 57, the ball 43 is sequentially affected by the right guide block 53 and the lower guide block 55 and slightly shifted left and right, but still continues to travel on the first track 57;

When the ball 43 rotates counterclockwise along the first track 57, after the ball 43 is affected by the right guide block 53, the ball 43 will move into the groove of the upper guide block 56, and cannot continue to rotate counterclockwise;

When the ball 43 is located in the groove of the upper guide block 56, if the ball 43 rotates counterclockwise, the ball 43 will be affected by the lower guide block 55 and move into the second track 58;

When the ball 43 rotates clockwise along the second track 58, after the ball 43 is affected by the left guide block 54 and the upper guide block 56 in sequence, the ball 43 will move to the first track 57;

When the ball 43 rotates counterclockwise along the second track 58 , the ball 43 is affected by the left guide block 54 and the upper guide block 56 in turn and slightly shifts left and right, but still continues to travel on the second track 58 .

In this embodiment, the lower guide block 55 and the upper guide block 56 further have the following shapes. In this definition, the top and bottom of FIG. 5 and FIG. 6 respectively represent the counterclockwise rotation direction and the clockwise rotation direction of the track seat 42 .

The lower guide block 55 is formed on the outer wall surface of the rail portion 421, and the lower guide block 55 is surrounded by the first wall 61, the second wall 62, the third wall 63 and the fourth wall 64. The first wall 61 is The longitudinal wall, the lower end of which is connected to the upper end of the second wall 62, the second wall 62 is a wall inclined downward to the right, the lower end of the second wall 62 is connected to the lower end of the third wall 63, and the third wall 63 is a wall inclined upward to the left , and is located on the left side of the second wall 62, the upper end of the third wall 63 is connected to the lower end of the fourth wall 64, the fourth wall 64 is a wall inclined upward to the right, and is located above the third wall 63, the fourth wall 64 The upper end is connected to the upper end of the first wall 61;

The upper guide block 56 is formed on the outer wall surface of the track portion 421, and the upper guide block 56 is surrounded by the fifth wall 65, the sixth wall 66, the seventh wall 67 and the eighth wall 68, and the fifth wall 65 is A wall inclined downward to the right, the lower end of the fifth wall 65 is connected to the lower end of the sixth wall 66, the sixth wall 66 is a wall inclined upward to the left, and is located on the left side of the fifth wall 65, and the upper end of the sixth wall 66 is connected to the sixth wall. The upper end of the seventh wall 67, the seventh wall 67 is a wall inclined downward to the left, the lower end of the seventh wall 67 is connected to the lower end of the eighth wall 68, the eighth wall 68 is a wall inclined upward to the right, and is located above the seventh wall 67 , the upper end of the eighth wall 68 is connected to the upper end of the fifth wall 65;

The upper guide block 56 and the lower guide block 55 are all located between the left flange 52 and the right flange 51, and the junction of the first wall 61 and the second wall 62 of the lower guide block 55 is located on the right side of the right flange 51. The third wall 63 of the lower guide block 55 is located on the left side of the left flange 52; the junction of the sixth wall 66 and the seventh wall 67 of the upper guide block 56 is located on the first wall 61 of the lower guide block 55 and the upper left of the junction of the fourth wall 64 .

Please refer to Fig. 2, Fig. 3 and Fig. 8, the aforesaid cord assembly is installed under the frame 11, and has a cord 14 connected to the roll tube 12, and the lift of the cord 14 is controlled by the roll tube 12, in this embodiment The cord set further has a connecting rope 17 and a lower rail 15, the upper end of the connecting rope 17 is wound on the external thread 321 of the take-up wheel 32, and the lower rail 15 is fixed to the lower end of the cord 14 and the connecting rope 17.

Please refer to FIG. 2 , FIG. 8 and FIG. 9 , when the present invention is used, the fixing frame is installed on the wall to be installed, and then the frame 11 is mounted on the fixing frame. When you want to put down the curtain 14, you only need to pull down the lower rail 15, and no matter the curtain 14 is pulled down to any height, as long as you stop applying force to the lower rail 15, the curtain 14 and the lower rail 15 will stop at the current height ( as shown in Figure 8). And no matter the curtain 14 and the lower rail 15 stop at any height, as long as the lower rail 15 is pulled down a little and released immediately, the lower rail 15 and the curtain 14 will automatically roll up to the location.

Please refer to Figure 2 and Figure 4, the main components that control this series of actions are the main spring 13 and the positioning group 40. When the curtain 14 is pulled down, the curtain 14 drives the take-up pulley 32 to rotate clockwise through the connecting rope , and the take-up wheel 32 drives the reel tube 12 which is threaded and fixed in the direction of rotation to rotate, and the reel tube 12 then drives the main spring 13 to rotate, but the main spring 13 is a torsion spring, and the other end is connected to the track seat of the positioning group 40 42, and the track seat 42 is fixed with the side cover 16 so it cannot rotate, so the main spring 13 itself starts to twist, and then accumulates elastic potential energy. And in the process of pulling down the curtain 14, once the force is stopped on the curtain 14, the components 41, 42, 43 of the positioning group 40 will immediately interact with each other (the components of the positioning group 40 will be described in detail in the next paragraph), Furthermore, the swivel seat 41 and the track seat 42 cannot rotate relatively, so the coil tube 12 and the main spring 13 respectively connecting the two 41, 42 cannot rotate relatively. When all components are static, the curtain 14 can stop at the moment the height of. And release immediately after pulling down the lower rail 15 a little, now the components 41, 42, 43 of the positioning group 40 interact again (the components of the relevant positioning group 40 will be described in detail in the next paragraph), so that the rotating seat 41 and the track seat 42 can be relatively rotated, at this time the main spring 13 will begin to release the accumulated elastic potential energy, and start to twist in reverse, and the curtain 14 and the lower rail 15 will be rolled up until the main spring 13 returns to the initial state, and at the same time The screen 14 also returns to its initial uppermost end.

Next, the actions of each component of the positioning group 40 in the above-mentioned process will be explained. First, the ball 43 is located between the axial groove 411 of the rotating seat 41 and the track portion 421 of the track seat 42, and the position of the ball 43 in it and the relationship with each guide block determine whether the rotating seat 41 and the track seat 42 whether can relatively rotate.

In this definition, the top and bottom of FIGS. 10 to 16 respectively represent the counterclockwise rotation direction and the clockwise rotation direction of the track seat 42 .

Please refer to Fig. 2, Fig. 4 and Fig. 8, when the curtain 14 is pulled down, the rotating roll tube 12 is fixed on the rotating seat 41, and the side cover 16 is fixed on the track seat 42, so the rotating seat 41 is aligned with the track seat 42. The hour hand rotates, and the ball 43 moves downward on the track portion 421 . As shown in Fig. 4 to Fig. 6, Fig. 10 and Fig. 11, the starting position of the ball 43 is on the first track 57, first the ball 43 moves downward along the wall of the right flange 51, and then along the right guide block 53 bulges to the left, and then moves to the left and lower. After breaking away from the right guide block 53, the ball 43 then abuts against the second wall 62 of the lower guide block 55 downwards, and then continues to the right along the second wall 62. Move down, then break away from the second wall 62, move down along the wall surface of the right flange 51 again, and constantly repeat this cycle, and the rotating seat 41 can therefore constantly rotate clockwise relative to the track seat 42.

Please refer to Fig. 2, Fig. 4 and Fig. 8, and after stopping the application of force to the cord 14, firstly, before the positioning group 40 plays a role and prevents the reverse rotation of the main spring 13, the main spring 13 will still reversely rotate for a short period, and the main spring 13 drives the rolling tube 12 to rotate counterclockwise, and the rolling tube 12 further drives the rotating seat 41, and makes the rotating seat 41 rotate counterclockwise relative to the track seat 42, while the ball 43 moves upward on the track part 421. As shown in Fig. 4 to Fig. 6 and Fig. 12, the ball 43 moves upward on the first track 57, originally moving upward along the wall surface of the right flange 51, and then following the leftward bulge of the right guide block 53, instead of moving upward. Moving upwards to the left, after the ball 43 breaks away from the right guide block 53, it will move upwards along the first wall 61 of the lower guide block 55, then break away from the lower guide block 55, and abut against the upper guide block 56 upwards The sixth wall 66, and then the ball 43 moves along the sixth wall 66 to the corner sandwiched by the sixth wall 66 and the seventh wall 67. At this time, the ball 43 is trapped upward in the corner and cannot continue to move upward. Therefore, the ball 43 is stuck in the axial groove 411, so that the rotating seat 41 cannot continue to rotate counterclockwise relative to the track seat 42, and the coil tube 12 and the main spring 13, which are respectively fixed with the two 41 and 42, cannot continue to counterclockwise. Rotate, thereby just can make curtain 14 stop at the present height.

Please refer to Fig. 2, Fig. 4 and Fig. 8, if the cord 14 is to be rolled up automatically, and the lower rail 15 is pulled down a little and released immediately, while the lower rail 15 is pulled down, the rolling tube 12 with the swivel seat 41 Rotate clockwise relative to the track seat 42. Please refer to Fig. 4 to Fig. 6 and Fig. 13, and the ball 43 then moves downward slightly, and the ball 43 moves downward while breaking away from the seventh wall 67 and the sixth wall 66 of the upper guide block 56, And it abuts against the fourth wall 64 of the lower guide block 55 downwards, and then moves to the second track 58 to the left along the fourth wall 64 .

Please refer to Fig. 4 to Fig. 6 and shown in Fig. 8, then after the user releases the lower rail 15, since the ball 43 is no longer limited by the corners of the sixth wall 66 and the seventh wall 67, the swivel seat 41 can be opposite to each other. The track seat 42 rotates counterclockwise, and the main spring 13 continues to release the elastic potential energy and twists in reverse, thereby making the rotating seat 41 continue to rotate counterclockwise relative to the track seat 42 . Please refer to Fig. 4 to Fig. 6, Fig. 14 and shown in Fig. 15, and ball 43 moves upwards on track portion 421, and ball 43 is on second track 58, moves upward along left flange 52 at first, then along left The guide block 54 bulges to the right and moves upwards to the right. After the ball 43 breaks away from the left guide block 54, it will abut against the third wall 63 of the lower guide block 55 upwards, and then move along the third wall 63. Move upward to the left, then the ball 43 breaks away from the lower guide block 55, then moves upward along the wall surface of the left flange 52, and repeats this cycle constantly, so that the rotating seat 41 can constantly rotate counterclockwise relative to the track seat 42, Until the main spring 13 returns to the initial state, the curtain 14 also returns to the initial uppermost end at the same time.

Please refer to FIG. 2 , FIG. 4 and FIG. 8 . Finally, when the user wants to put down the curtain 14 again, the rotating seat 41 rotates clockwise relative to the track seat 42 again, and the ball 43 moves down again on the track portion 421 . As shown in Fig. 4 to Fig. 6 and Fig. 16, the starting position of the ball 43 is the second track 58, and the ball 43 first moves downward along the left flange 52, and then protrudes rightward along the left guide block 54. , and change to move down to the right, after the ball 43 breaks away from the left guide block 54, it will lean against the fifth wall 65 of the other upper guide block 56 downwards, and then go down to the right along the fifth wall 65 Move to the first track 57 , then just as mentioned above, continuously slide down on the first track 57 , and the rotating seat 41 can also constantly rotate clockwise relative to the track seat 42 .

Please refer to FIG. 2 and FIG. 8 , through the above technical features, the present invention can stop the curtain 14 at any height and easily make the curtain 14 roll up automatically.

Please refer to Fig. 7 and shown in Fig. 8, another technical feature of the present invention is the take-up group 30, by making the take-up wheel 32 and the wheel base 31 screw together, and making the connecting rope 17 wound on the take-up wheel 32 External thread 321, when the cord 14 is rolled upwards, the take-up wheel 32 will move laterally in the wheel seat 31 due to the rotation relative to the wheel seat 31, while the longitudinal position of the connecting rope 17 remains unchanged, so the connecting rope 17 will move smoothly. The external thread 321 that is constantly rotating and moving laterally is wound, so as to prevent the connecting rope 17 from being wound at the same place of the take-up reel 32, so that the winding place becomes thicker and touches the frame 11. 17 is neatly wound on it, so that the connecting rope 17 is not easy to get entangled together when it is lowered or received, and then it moves smoothly.

In addition, by using a plurality of balls 33 to abut against the ball groove 322 of the take-up wheel 32 and the groove 121 of the reel tube 12 in a "point" manner, so that the take-up wheel 32 and the reel tube 12 are fixed in the direction of rotation, Can effectively reduce the friction between the two 32,12.

Please refer to Fig. 2 and Fig. 17, another technical feature of the present invention is the hydraulic damper 22 and the torsion spring 23, the torsion spring 23 is sheathed and fastened to the steering rod 221 of the hydraulic damper 22, so the torsion spring 23 and steering rod 221 can't be relatively moved; moreover, set the steering member 24 of torsion spring 23 one end, by the combination relation of spring shaft 21, rail seat 42 and side cover 16 in sequence, and can't rotate at all. The following discussion is divided into two parts:

When the curtain is lowered, the rotating coil tube 12 drives the main spring 13 and the oil pressure damper 22 to rotate in sequence, and the oil pressure damper 22 wants to drive the steering rod 221 to rotate, but the torsion spring 23 that is fixed to the steering rod 221 in the direction of rotation , one end of which is fixed with a non-rotatable steering member 24, so the torsion spring 23 is stretched by the steering rod 221 along the direction of winding, and is no longer close to the steering rod 221, so the torsion spring 23 rotates relative to the steering rod 221, and turns The rod 221 rotates with the oil pressure damper 22, so the oil pressure damper 22 does not play a role, and the curtain can also be pulled down normally without being affected.

When the curtain is closed, the coil tube 12 drives the main spring 13 and the oil pressure damper 22 to rotate in reverse order, and the oil pressure damper 22 also wants to drive the steering rod 221 to rotate in the reverse direction, and the torsion spring 23 is also driven by the steering member 24. It cannot rotate with the steering rod 221, but this time the steering rod 221 wants to rotate in the opposite direction to when the curtain is pulled down, so the torsion spring 23 is pulled tightly by the steering rod 221 against the direction of winding, so that the torsion spring 23 is closer to the steering rod 221, the torsion spring 23 cannot bear the force in two different directions, so it drives the steering rod 221 to rotate and resist the oil pressure damper 22, and makes the two 22, 221 start to rotate with each other, and then the oil pressure damper 22 starts to play a role, and It has a buffering effect on the retracted curtain, so as to prevent the curtain from being retracted too fast, thus causing various accidental injuries.

Please refer to Fig. 18 to Fig. 21, the following is a preferred embodiment 1 of the present invention, which further has half of the hydraulic group 80B, and the half hydraulic group 80B is fixed on the frame 11B, and includes a positive column 81B and an outer tube 82B , an inner tube 83B, an oil pressure damper 84B and a torsion spring 85B, the positive column 81B is fixed with a side cover 16B, and from the outside to the inside are an external thread section 811B, a square section 812B and a guiding part 813B, the guiding part 813B is a hemispherical end and obliquely connects the end angle of the square section 812B, which can guide the angle of the object to be fitted into the square section 812B, so that it can smoothly fit the square section 812B, and the outer tube 82B The wall surface is slidably fitted on the inner wall surface of the coiled tube 12B and sleeved and screwed to the external threaded section 811B of the positive column 81B. The outer tube 82B is hollow and has two openings. The inner tube 83B is threaded through the outer tube 82B. In the middle, it is hollow tubular and has openings at both ends. The shape of the inner wall of the inner tube 83B corresponds to the square section 812B of the positive column 81B. The oil pressure damper 84B has a steering rod 841B. By rotating the oil pressure damper 84B and the steering rod 841B relatively, a buffer function in the direction of rotation is produced. The outer tube 82B and the torsion spring 85B are sheathed and tightened outside the steering rod 841B, and one end of the inner tube 83B is fixed.

The operation of the semi-hydraulic group 80B can be divided into four stages: first, the curtain cloth starts to be lowered to half; second, the curtain cloth is lowered more than half to fully lowered; third, the curtain cloth starts to be raised and raised to half; Fourth, the curtain is closed more than half to fully closed.

First, when the curtain starts to be lowered to halfway down, the roll tube 12B drives the outer tube 82B to rotate together, and the positive column 81B is fixed to the frame 11B without rotating, so the outer tube 82B rotates relative to the external thread section 811B of the positive column 81B, and Along the screw thread, it moves away from the positive column 81B, and the inner tube 83B also moves away from the positive column 81B due to the contact and push of the outer tube 82B. At the same time, the oil pressure damper 84B follows the outer tube 82B. The tube 82B rotates, and the oil pressure damper 84B intends to drive the steering rod 841B to rotate, but the torsion spring 85B is close to the steering rod 841B and cannot rotate relatively, and one end is fixed with the inner tube 83B, and the inner tube 83B fits into the front column 81B The square segment 812B does not rotate, so the torsion spring 85B fixes the direction of rotation to the steering rod 841B to be rotated, and the other end is fixed with a non-rotating inner tube 83B, so the torsion spring 85B is stretched by the steering rod 841B along the winding direction. Therefore, it is no longer close to the steering rod 841B, so that the steering rod 841B can rotate relative to the inner tube 83B, and the steering rod 841B rotates with the oil pressure damper 84B. Therefore, at this stage, the oil pressure damper 84B does not play a role, and the curtain does not It can be pulled down normally without being affected.

Second, when the curtain is lowered more than halfway to fully lowered, at this stage the inner tube 83B is completely separated from the positive column 81B, and the inner tube 83B that is not fitted by the positive column 81B can therefore rotate, and because the inner tube 83B can rotate, the torsion spring 85B becomes, the internal rotation direction is fixed to the steering rod 841B, and at the same time, the other end is fixed with a rotatable inner tube 83B, so the torsion spring 85B is no longer stretched by the inner tube 83B, but instead rotates together with the inner tube 83B. At this stage , the steering rod 841B also rotates with the hydraulic damper 84B, so the hydraulic damper 84B still does not play a role, and the curtain can also be pulled down normally.

Thirdly, when the curtain starts to be raised halfway, the inner tube 83B still maintains a state of being separated from the positive column 81B at this stage, so it can rotate freely relative to the positive column 81B. At this time, the rolling tube 12B and the outer tube 82B rotate in the opposite direction , the outer tube 82B rotates in the opposite direction relative to the positive column 81B, and moves along the thread toward the direction close to the positive column 81B. At the same time, the outer tube 82B is fixed with an oil pressure damper 84B, so the oil pressure damper 84B is driven and rotates in the opposite direction and lateral movement, when the hydraulic damper 84B moves laterally against the inner tube 83B, the inner tube 83B moves toward the direction close to the positive column 81B, and the reverse rotation of the hydraulic damper 84B also intends to drive the steering rod 841B to reverse and the torsion spring 85B is close to the steering rod 841B, but a rotatable inner tube 83B is fixed at one end, so the torsion spring 85B and the inner tube 83B rotate in the reverse direction together. In this stage, the steering rod 841B is also damped by the oil pressure The device 84B rotates in the opposite direction, so the oil pressure damper 84B still does not function, and the cord is also normally retracted.

Fourth, the curtain is closed more than halfway up until it is fully closed. In this stage, the inner tube 83B fits into the square section 812B along the guide portion 813B of the positive column 81B, so the inner tube 83B cannot continue to rotate, and the torsion spring 85B again faces the same problem as the first stage. The internal rotation direction is fixed to the steering rod 841B to be rotated, and the other end is fixed with a non-rotating inner tube 83B, but this time the direction of rotation of the steering rod 841B is opposite to that of the first stage. , so the torsion spring 85B is pulled tightly by the inner tube 83B against the direction of winding, so that the torsion spring 85B is closer to the steering rod 841B, and the torsion spring 85B cannot withstand the forces in two different directions. However, the inner tube 83B fits the positive column 81B And cannot rotate at all, so the torsion spring 85B just limits the steering rod 841B, and wants to stop the rotation of the steering rod 841B, but the outer tube 82B of the fixed rotation of the oil pressure damper 84B, so the oil pressure damper 84B and the steering rod 841B Start to rotate relative to each other, and thereby play the role of the steering oil pressure damper 84B, and then produce a buffering effect on the retracted cord.

The hydraulic damper 84B of this embodiment will only work when the curtain is retracted more than halfway to fully retracted, so it can avoid when the curtain is pulled down, because the hydraulic damper 84B is a two-way buffer structure and also plays a buffering role. It is inconvenient for the user to spend more effort to pull down the curtain; in addition, the oil pressure damper 84B does not work when the curtain starts to be drawn up, thereby avoiding excessive time consumption when the curtain is drawn up.

Please refer to Fig. 2 and shown in Fig. 17, when the semi-hydraulic group of preferred embodiment 1 is installed in the present invention, the spring shaft 21, the hydraulic group nipple 22, the torsion spring 23 and the steering member 24 will still be actuated. Simultaneously exerts the function of cushioning with the semi-hydraulic group. In addition, the present invention can also remove the spring shaft 21, the hydraulic nipple 22, the torsion spring 23 and the steering member 24, and use the half hydraulic group alone to exert its buffering effect.

Please refer to Fig. 22 which shows the second preferred embodiment of the present invention, which further has a pull cord 90C, which is connected to the lower end of the lower rail 15C, so that users who are not tall enough can conveniently install the curtain installed in a high place 14C is pulled down; in addition, when the present invention is used in conjunction with Roman blinds, when the curtain 14C of the Roman blind is completely retracted, the folded curtain 14C will block the lower rail 15C due to sagging, and the stay rope 90C connected to the lower end of the lower rail 15C is more It is convenient for users to pull down the curtain 90C.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (9)

1. A transmission device for curtains, comprising: a frame, which is hollow tubular; a roll tube, which can be rotatably passed through the frame; A main spring, which is a torsion spring and is installed in the coil tube, and one end of the main spring is fixed with the coil tube; a spring shaft passing through the main spring; and A curtain group, which is installed under the frame, and has a curtain connected to the roll tube, and the lift of the curtain is controlled by the roll tube; It is characterized in that it further includes: An oil pressure damper, which is fixed to the end of the coil tube with the main spring fixed, and has a steering rod, which produces a buffer function in the direction of rotation by relatively rotating the oil pressure damper and the steering rod; A torsion spring, which is sleeved and tightened outside the steering rod of the hydraulic damper, and a spring shaft is fixed at one end; A positioning group, which is fixed on the frame and includes a rotating seat, a track seat and a ball, the rotating seat is hollow tubular and fixed on the coil tube, and an axial groove is concavely formed on the inner wall of the rotating seat, The outer end of the track seat is fixed on the frame and passed through the rotating seat, the inner end of the track seat is fixed on the main spring and the spring shaft, and the outer wall of the track seat is concavely provided with two interlinked first and second tracks. There are multiple guide blocks between the two tracks, and the balls can be moved between the axial grooves of the rotary seat and the track seat. When the rotary seat rotates, the axial grooves control the balls to move around and cooperate with Each guide block is switched to move on the first track and the second track. 2. The transmission device for curtains according to claim 1, characterized in that: the track seat of the positioning group further includes a track part and a joint part from the outside to the inside, the track part is passed through the rotating seat and the outer end is fixed The frame, the joint part runs through the rotating seat and the main spring is fixed at the inner end; The outer wall of the track part is formed with a right flange, a left flange, two right guide blocks, two lower guide blocks, two upper guide blocks and two left guide blocks, and the right flange and the left flange are respectively radial The uplift is formed around the inner and outer ends of the outer wall of the track portion. Each guide block is divided into the same two groups and connected circularly. Each group includes a right guide block, a left guide block, a bottom guide block and One upper guide block, the right guide block is extended and formed on the outside of the right flange, the left guide block is extended and formed on the inside of the left flange, the upper guide block and the lower guide block are located on the left flange and the right flange The upper guide block is located in the counterclockwise direction of the lower guide block; the first track is between the upper and lower guide blocks and the right flange; the second track is between the upper and lower guide blocks and the left flange . 3. The transmission device for curtains according to claim 1 or 2, characterized in that: it further has half of the hydraulic group, and the half hydraulic group is fixed to the frame, and includes a positive column, an outer tube, an inner tube, A hydraulic damper and a torsion spring, the frame is fixed on the positive column and there are an external thread section, a square section and a guiding part in sequence from outside to inside. The guiding part is a hemispherical end and is obliquely connected to the square section. End angle, the outer tube is fixed in the direction of rotation to the coiled tube and is sheathed and screwed to the outer threaded section of the positive column. The outer tube is hollow tubular with openings at both ends. The inner tube penetrates the outer tube and is hollow tubular and It has openings at both ends, and the shape of the inner wall of the inner tube corresponds to the square section of the positive column. The inner tube can be axially moved and fitted in the square section of the positive column. The oil pressure damper has a steering rod. The damper and the steering rod are used to produce the buffering function in the direction of rotation. The steering rod is installed in the inner tube, the oil pressure damper is fixed on the outer tube, the torsion spring is sleeved and tightened outside the steering rod, and one end of the torsion spring is fixed inner tube. 4. The transmission device for curtains according to claim 1 or 2, characterized in that: it further includes at least one wire take-up group, and the curtain cloth group further has a connecting rope, the wire take-up group is sleeved outside the roll tube and includes There is a wheel seat and a take-up wheel. The wheel seat is fixed on the frame and sleeved outside the coil tube. The wheel seat is hollow tubular with openings at both ends and internal threads. It can be rotatably set outside the reel tube. The take-up wheel is hollow tubular with openings at both ends and external threads. The upper end of the connecting rope is wound on the external threads of the take-up wheel. 5. The transmission device for curtains according to claim 3, characterized in that: it further includes at least one wire take-up group, and the curtain cloth group further has a connecting rope, and the wire take-up group is sleeved outside the roll tube and includes a round Seat and a take-up wheel, the wheel seat is fixed on the frame and sleeved outside the coil tube, the wheel seat is hollow tubular with openings at both ends and internal threads, the take-up wheel is threaded and screwed in the wheel seat and cannot rotate The shape is sleeved outside the reel tube. The take-up wheel is hollow tubular with openings at both ends and external threads. The upper end of the connecting rope is wound on the external threads of the take-up wheel. 6. The transmission device for curtains according to claim 1 or 2, characterized in that it further has a pull cord connected to the lower end of the cord set. 7. The transmission device for curtains according to claim 3, characterized in that it further has a pull cord connected to the lower end of the cord set. 8. The transmission device for curtains according to claim 4, characterized in that it further has a pull cord connected to the lower end of the cord set. 9. The transmission device for curtains according to claim 5, characterized in that it further has a pull cord connected to the lower end of the cord set.