Clutch type curtain lifter

Abstract

The utility model belongs to the technical field of curtain lifting, and particularly relates to a clutch type curtain lifter which comprises a fixing cylinder, a first reset spring is fixedly connected to the side wall of a rotating rod, and the end of the first reset spring is fixedly connected to the side wall of a pull rope disc. A fixing ring is fixedly connected to the side wall of the rotating rod, and a second reset spring is fixedly connected to the side wall of the fixing ring. The end, away from the fixing ring, of the second reset spring is fixedly connected with a clutch block. The end, away from the fixing ring, of the clutch block is meshed with a transmission block. According to the curtain lifting device, the curtain lifting assembly composed of the first one-way ratchet wheel, the second one-way ratchet wheel, the pull rope disc and the curtain lifting pull rope is arranged to control a curtain to ascend, the transmission block and the clutch block are arranged to conduct power transmission of the curtain lifting device, and the flexibility and practicability of the curtain lifting device are enhanced; the problem that a traditional annular pull rope lifter needs to be pulled many times to determine the movement state of a curtain is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of curtain lifting, and particularly relates to a clutch type curtain lifter. BACKGROUND

[0002] Curtains are made of cloth, hemp, gauze, aluminum sheet, wood sheet, metal material and the like, have the functions of sun-shading, heat-insulation and indoor light adjusting, and with the modernization and intelligentization of furniture and household appliances becoming more and more popular, curtain lifters come into being, and the curtain lifter is a tool capable of adjusting the height of a curtain and providing convenience for the user's home life.

[0003] The existing curtain lifter is usually operated by rotating a ring-shaped pull bead control bead disc and a curtain, and the height of the curtain is controlled by winding the curtain, however, in daily use, the ring-shaped pull bead is often wound and dislocated, and the user often cannot determine whether the rotating direction of the bead disc is correct, and needs to pull the pull bead for several times to complete the height adjustment of the curtain, which is inconvenient.

[0004] Therefore, the utility model provides a clutch type curtain lifter. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem in the background art.

[0006] The utility model discloses a clutch type curtain lifter, including fixed cylinder, the inside of fixed cylinder is provided with the rotation rod, the side wall of rotation rod is connected with first one way ratchet wheel and second one way ratchet wheel rotation, and the side wall of first one way ratchet wheel and second one way ratchet wheel is respectively fixed in the end of fixed cylinder, the end of second one way ratchet wheel is connected with pull rope disc rotation, and the side wall of pull rope disc is fixed with the lift curtain pull rope, the side wall of rotation rod is fixed with first return spring, and the end of first return spring is fixed in the side wall of pull rope disc, the side wall of rotation rod is fixed with fixed ring, and the side wall of fixed ring is fixed with second return spring, the end of second return spring away from fixed ring is fixed with clutch block, the end of clutch block away from fixed ring is engaged with transmission block, the transmission block and rotation rod are in sliding connection, and the side wall of transmission block is provided with curtain load rod, this step is controlled by the window curtain ascending subassembly that is composed of first one way ratchet wheel, second one way ratchet wheel, pull rope disc, lift curtain pull rope to the ascending of the window curtain, the power transmission of the window curtain lifter is carried out through the transmission block and clutch block, the flexibility and practicality of the window curtain lifter are enhanced, and the problem that the traditional ring-shaped pull rope lifter needs to be pulled for several times to determine the motion state of the curtain is solved.

[0007] Preferably, the side wall of the fixed cylinder is fixedly connected with a fixed lug, and the end of the fixed lug is rotationally connected with a push block; the top of the push block is correspondingly sized with the clutch block; the side wall of the fixed cylinder is fixedly connected with a reset spring, and the reset spring contacts the side wall of the clutch block; the side wall of the push block is fixedly connected with a drop curtain pull rope, and the drop curtain pull rope penetrates the side wall of the fixed cylinder; this step controls the transmission state of the clutch type window curtain lifter by setting the push block and the drop curtain pull rope, thereby controlling the descent of the window curtain, realizing the separated window curtain height control effect, and being beneficial to solving the problem that the traditional annular pull rope lifter needs to be pulled multiple times to determine the movement state of the window curtain, thereby enhancing the practicability and convenience of the lifter.

[0008] Preferably, the end of the fixed cylinder is fixedly connected with an inner fixed block, and the bottom of the inner fixed block is provided with a through hole; the side wall of the inner fixed block is provided with an outer fixed block, and the side wall of the outer fixed block is provided with a limiting groove; the limiting groove is provided with a limiting block inside, and the end of the limiting block is fixedly connected with a fixed sheet; this step installs the clutch type window curtain lifter by setting the inner fixed block, the outer fixed block and the fixed sheet, thereby providing convenience for the lifter installation work of the user, improving the installation flexibility of the clutch type window curtain lifter, and being beneficial to reducing the maintenance difficulty and cost of the lifter.

[0009] Preferably, the side wall of the rotating rod is provided with a sliding groove, and the sliding groove is correspondingly sized with the clutch block; this step defines the stable range of the clutch block by setting the sliding groove at the predetermined position of the rotating rod, thereby preventing the ectopia of the clutch block, maintaining the synchronous rotation of the clutch block and the rotating rod, being beneficial to enhancing the transmission effect of the clutch type window curtain lifter, and enhancing the durability.

[0010] Preferably, the inner side wall of the window curtain bearing rod is fixedly connected with a clamping block, and the clamping block is correspondingly sized with the transmission block; this step connects the transmission block by setting the clamping block, transmits the clutch type window curtain lifter, makes the window curtain bearing rod bear force evenly, is beneficial to prolonging the service life of the clutch type window curtain lifter, and enhances the stability.

[0011] Preferably, the fixed cylinder, the inner fixed block, the outer fixed block, the fixed ring, the clutch block and the push block are made of plastic material; the rotating rod is made of stainless steel material; this step reduces the self-weight of the lifter by making the fixed cylinder, the inner fixed block, the outer fixed block, the fixed ring, the clutch block and the push block made of plastic material, reduces the production cost, reduces the maintenance requirement of the lifter by making the rotating rod made of stainless steel material, and extends the service life.

[0012] Preferably, the fixed ring is correspondingly sized with the clutch block; this step supports the inside of the clutch block by the fixed ring, thereby avoiding the inclination of the clutch block, and enhancing the stability and durability of the clutch type window curtain lifter.

[0013] The utility model discloses a beneficial effect is as follows:

[0014] 1. The utility model discloses a kind of clutch formula curtain lifter, by setting by first one-way ratchet, second one-way ratchet, pull cord reel, curtain lifting pull cord component window curtain ascending subassembly control window curtain rises, by setting transmission block, clutch block carries out the power transmission of this window curtain lifter, the flexibility and practicality of the window curtain lifter are enhanced, it is favorable to solve the problem that traditional annular pull cord lifter needs to be pulled multiple times to determine window curtain movement state.

[0015] 2. The utility model discloses a kind of clutch formula curtain lifter, by setting push block and curtain lowering pull cord control the conduction state of this clutch formula curtain lifter, to control the descent of window curtain, realizes the window curtain height control effect of separation type, it is favorable to solve the problem that traditional annular pull cord lifter needs to be pulled multiple times to determine window curtain movement state, the practicality and convenience of lifter are enhanced. DRAWINGS

[0016] The utility model will be further described below in conjunction with the drawings.

[0017] Figure 1 It is the perspective view of the utility model;

[0018] Figure 2 It is the structure schematic view of outer fixed block in the utility model;

[0019] Figure 3 It is the structure schematic view of push block in the utility model;

[0020] Figure 4 It is the structure schematic view of fixed cylinder in the utility model.

[0021] In the drawing: 1, fixed cylinder;2, window curtain load bar;3, rotating rod;4, first reset spring;5, first one-way ratchet;6, second one-way ratchet;7, pull cord reel;8, curtain lifting pull cord;9, inner fixed block;10, outer fixed block;11, fixed sheet;12, limit block;13, transmission block;14, clutch block;15, fixed ring;16, second reset spring;17, sliding slot;18, fixed lug;19, push block;20, curtain lowering pull cord;21, reset sheet;22, clamping block. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0023] The following specific embodiments are given.

[0024] As Figures 1 to 4 shown, the utility model discloses a kind of clutch type curtain lifters, including fixed cylinder 1, the inside of fixed cylinder 1 is provided with rotating rod 3;Rotating rod 3 is rotatably connected with first one-way ratchet 5 and second one-way ratchet 6 on the side wall, and the side wall of first one-way ratchet 5 and second one-way ratchet 6 is respectively fixedly connected in the end of fixed cylinder 1;The end of second one-way ratchet 6 is rotatably connected with pull cord reel 7, and the side wall of pull cord reel 7 is fixedly connected with lift curtain pull cord 8;Rotating rod 3 is fixedly connected with first return spring 4 on the side wall, and the end of first return spring 4 is fixedly connected on the side wall of pull cord reel 7;Rotating rod 3 is fixedly connected with fixed ring 15 on the side wall, and the side wall of fixed ring 15 is fixedly connected with second return spring 16;The end of second return spring 16 away from fixed ring 15 is fixedly connected with clutch block 14;The end of clutch block 14 away from fixed ring 15 is engaged with transmission block 13, transmission block 13 and rotating rod 3 are in sliding connection, and the side wall of transmission block 13 is provided with curtain load bar 2;When working, user can realize the ascending of curtain by repeatedly pulling the mode of lift curtain pull cord 8, in the process, whenever lift curtain pull cord 8 is pulled, since the end of lift curtain pull cord 8 is fixedly connected on the side wall of pull cord reel 7, along with the movement of lift curtain pull cord 8, pull cord reel 7 and rotating rod 3 with the ratchet connection of pull cord reel 7 will rotate, rotating rod 3 rotates in the process, first return spring 4 fixedly connected between rotating rod 3 and pull cord reel 7 will be twisted and continue to accumulate elastic potential energy, wherein, fixed ring 15 fixedly connected on the side wall of rotating rod 3 can push clutch block 14 to transmission block 13 by second return spring 16, so that transmission block 13 rotates synchronously, and drives curtain load bar 2 to rotate, to realize the ascending of curtain, user can stop pulling after pulling lift curtain pull cord 8 to the bottom, and make pull cord reel 7 rotate under the action of first return spring 4, in the process of first return spring 4, since first one-way ratchet 5 is arranged between fixed cylinder 1 and rotating rod 3, first one-way ratchet 5 can keep the stationary state of rotating rod 3 by itself;And since second one-way ratchet 6 is arranged between pull cord reel 7 and rotating rod 3, pull cord reel 7 can idle by the ratchet structure of second one-way ratchet 6, until lift curtain pull cord 8 is wound back;This step controls the ascending of curtain by setting window curtain ascending assembly composed of first one-way ratchet 5, second one-way ratchet 6, pull cord reel 7, lift curtain pull cord 8, power transmission of this curtain lifter is carried out by setting transmission block 13 and clutch block 14, the flexibility and practicability of the curtain lifter are enhanced, which is helpful to solve the problem that traditional ring-shaped pull cord lifter needs to be pulled multiple times to determine the movement state of curtain.

[0025] As Figures 1 to 3As shown, the side wall of the fixed cylinder 1 is fixedly connected with a fixed lug 18, and the end of the fixed lug 18 is rotationally connected with a push block 19; the top of the push block 19 is correspondingly sized to the clutch block 14; the side wall of the fixed cylinder 1 is fixedly connected with a reset spring 21, and the reset spring 21 contacts the side wall of the clutch block 14; the side wall of the push block 19 is fixedly connected with a lowering cord 20, and the lowering cord 20 penetrates through the side wall of the fixed cylinder 1; in working, the user can pull the lowering cord 20 to release the engagement state of the transmission block 13 and the clutch block 14, so that the curtain load rod 2 loses the restriction of the curtain lifter and naturally lowers under the action of its own gravity, and in the process, whenever the user pulls the lowering cord 20, the push block 19 is rotationally connected at the end of the fixed lug 18, and the side wall of the push block 19 contacts the side wall of the clutch block 14, at this time the push block 19 will exert pressure on the clutch block 14, and after the clutch block 14 is pressed, the reset spring 21 will be compressed synchronously to generate displacement, and finally lose contact with the rotating rod 3; after the user stops pulling the curtain load rod 2, the reset spring 21 can reset the push block 19 by its own elastic force; this step controls the transmission state of the clutch type curtain lifter by setting the push block 19 and the lowering cord 20, thereby controlling the lowering of the curtain, realizing the separated curtain height control effect, and being beneficial to solve the problem that the traditional ring-shaped pull cord lifter needs to be pulled multiple times to determine the curtain movement state, thereby enhancing the practicality and convenience of the lifter.

[0026] As shown in the drawings, Figure 2 With Figure 3 As shown, the end of the fixed cylinder 1 is fixedly connected with an inner fixed block 9, and a through hole is formed in the bottom of the inner fixed block 9; an outer fixed block 10 is arranged on the side wall of the inner fixed block 9, and a limiting groove is formed in the side wall of the outer fixed block 10; a limiting block 12 is arranged in the limiting groove, and the end of the limiting block 12 is fixedly connected with a fixed sheet 11; in working, the user can first install the fixed sheet 11 at the predetermined position of the wall body when installing the clutch type curtain lifter, after installation, the user can install the outer fixed block 10 on the side wall of the inner fixed block 9, and complete the connection of the fixed sheet 11 and the inner fixed block 9 through the limiting groove formed in the side wall of the outer fixed block 10 and the limiting block 12 fixedly connected on the side wall of the fixed sheet 11, wherein the lifting cord 8 can extend out through the through hole formed in the bottom of the inner fixed block 9; this step installs the clutch type curtain lifter by setting the inner fixed block 9, the outer fixed block 10, and the fixed sheet 11, which provides convenience for the user's lifter installation work, and improves the installation flexibility of the clutch type curtain lifter, which is beneficial to reduce the maintenance difficulty and cost of the lifter.

[0027] As shown in the drawings, Figure 3 With Figure 4As shown, the side wall of the rotating rod 3 is provided with a sliding groove 17, and the sliding groove 17 is sized according to the clutch block 14; during operation, each time the clutch block 14 moves on the side wall of the rotating rod 3, the clutch block 14 will move within the range of the sliding groove 17, and since the predetermined position of the side wall of the rotating rod 3 is provided with the sliding groove 17, and the sliding groove 17 has the same internal size as the clutch block 14, the clutch block 14 will always rotate synchronously with the rotating rod 3; this step defines the stable range of the clutch block 14 by providing the sliding groove 17 at the predetermined position of the rotating rod 3, thereby preventing the clutch block 14 from being displaced, while maintaining the synchronous rotation of the clutch block 14 and the rotating rod 3, which is beneficial to enhance the transmission effect of the clutch type window curtain lifter and enhance the durability.

[0028] As shown in Figure 2 , the inner side wall of the curtain bearing rod 2 is fixedly connected with a clamping block 22, and the clamping block 22 is sized according to the transmission block 13; during operation, the staff can insert the transmission block 13 into the clamping block 22 to complete the connection of the lifter and the curtain bearing rod 2, wherein since the clamping block 22 is sized according to the transmission block 13, the two can rotate synchronously; this step connects the transmission block 13 by setting the clamping block 22 to transmit the clutch type window curtain lifter, so that the curtain bearing rod 2 is uniformly stressed, which is beneficial to prolong the service life of the clutch type window curtain lifter and enhance the stability.

[0029] As shown in Figures 1 to 4 , the fixed cylinder 1, the inner fixed block 9, the outer fixed block 10, the fixed ring 15, the clutch block 14, and the push block 19 are made of plastic material; the rotating rod 3 is made of stainless steel material; during operation, the fixed cylinder 1, the inner fixed block 9, the outer fixed block 10, the fixed ring 15, the clutch block 14, and the push block 19 made of plastic material can reduce the overall weight of the fixed cylinder 1, the inner fixed block 9, the outer fixed block 10, the fixed ring 15, the clutch block 14, and the push block 19, while the rotating rod 3 made of stainless steel material can effectively prevent rust; this step reduces the self-weight of the lifter by using plastic material for the fixed cylinder 1, the inner fixed block 9, the outer fixed block 10, the fixed ring 15, the clutch block 14, and the push block 19, reduces the production cost, reduces the maintenance requirement of the lifter by using stainless steel material for the rotating rod 3, and extends the service life.

[0030] As shown in Figure 3 , the fixed ring 15 is sized according to the clutch block 14; during operation, the fixed ring 15 sized according to the internal size of the clutch block 14 is always in contact with the inner side wall of the clutch block 14, and each time the clutch block 14 moves, the fixed ring 15 can provide support for the clutch block 14 inside, thereby preventing the clutch block 14 from tilting; this step supports the clutch block 14 inside through the fixed ring 15, thereby preventing the clutch block 14 from tilting, enhancing the stability and durability of the clutch type window curtain lifter.

[0031] In operation, the user can realize the lifting of the curtain by repeatedly pulling the lifting cord 8, in the process, whenever the lifting cord 8 is pulled, the lifting cord 8 is fixed to the side wall of the cord reel 7, accompanied by the movement of the lifting cord 8, the cord reel 7 and the rotating rod 3 in the ratchet connection with the cord reel 7 will rotate, in the process of rotating the rotating rod 3, the first reset spring 4 fixed between the rotating rod 3 and the cord reel 7 will be twisted and continuously accumulate elastic potential energy, wherein the fixed ring 15 fixed to the side wall of the rotating rod 3 can push the clutch block 14 to the transmission block 13 through the second reset spring 16, so that the transmission block 13 rotates synchronously, and drives the curtain load rod 2 to rotate, thereby realizing the lifting of the curtain, the user can stop pulling after pulling the lifting cord 8 to the bottom, and make the cord reel 7 rotate under the action of the first reset spring 4, in the process of rotating the first reset spring 4, because the fixed cylinder 1 and the rotating rod 3 are provided with the first one-way ratchet 5, the first one-way ratchet 5 can keep the rotating rod 3 stationary by itself;And because the second one-way ratchet 6 is arranged between the pull cord disc 7 and the rotating rod 3, the pull cord disc 7 can idle by means of the ratchet structure of the second one-way ratchet 6 until the lifting curtain pull cord 8 is wound back, the user can disengage the transmission block 13 and the clutch block 14 by pulling the lowering curtain pull cord 20, so that the window curtain supporting rod 2 loses the restriction of the window curtain lifter and naturally lowers under the action of its own gravity, during the process, whenever the user pulls the lowering curtain pull cord 20, because the push block 19 is rotationally connected to the end of the fixed protrusion 18, and the side wall of the push block 19 is in contact with the side wall of the clutch block 14, at this time the push block 19 will exert pressure on the clutch block 14, after the clutch block 14 is pressed, it will synchronously compress the reset spring 21 and then displace, finally losing contact with the rotating rod 3, after the user stops pulling the window curtain supporting rod 2, the reset spring 21 can reset the push block 19 by its own elastic force, when the user installs the clutch type window curtain lifter, the user can first install the fixed sheet 11 at the predetermined position of the wall, after installation, the user can install the outer fixed block 10 on the side wall of the inner fixed block 9, and complete the connection of the fixed sheet 11 and the inner fixed block 9 through the limiting slot on the side wall of the outer fixed block 10 and the limiting block 12 fixed on the side wall of the fixed sheet 11, wherein the lifting curtain pull cord 8 can extend out through the through hole on the bottom of the inner fixed block 9, whenever the clutch block 14 moves on the side wall of the rotating rod 3, the clutch block 14 will move within the scope of the sliding groove 17, and because the predetermined position of the side wall of the rotating rod 3 is provided with the sliding groove 17, and the sliding groove 17 has the same inner dimension as the clutch block 14, the clutch block 14 will always rotate synchronously with the rotating rod 3, the staff can insert the transmission block 13 into the inner part of the clamping block 22, thereby completing the connection of the lifter and the window curtain supporting rod 2, wherein because the clamping block 22 is provided with the same size as the transmission block 13, the two can rotate synchronously, the fixed cylinder 1, the inner fixed block 9, the outer fixed block 10, the fixed ring 15, the clutch block 14 and the push block 19 made of plastic material can reduce the overall weight of the fixed cylinder 1, the inner fixed block 9, the outer fixed block 10, the fixed ring 15, the clutch block 14 and the push block 19, and the rotating rod 3 made of stainless steel can effectively prevent rust, the fixed ring 15 corresponding to the inner dimension of the clutch block 14 is always in contact with the inner side wall of the clutch block 14, whenever the clutch block 14 moves, the fixed ring 15 can provide support for the clutch block 14 inside, thereby avoiding the inclination of the clutch block 14.

[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, the above examples and descriptions in the specification are only to illustrate the principle of the present application, without departing from the spirit and scope of the present application, the present application can have various changes and improvements, these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A clutch-type window curtain lifter comprising a fixed cylinder (1), characterized in that: The inside of the fixed cylinder (1) is provided with a rotating rod (3); the side wall of the rotating rod (3) is rotatably connected with a first one-way ratchet (5) and a second one-way ratchet (6), and the side walls of the first one-way ratchet (5) and the second one-way ratchet (6) are fixedly connected at the ends of the fixed cylinder (1); the end of the second one-way ratchet (6) is rotatably connected with a pull rope disc (7), and the side wall of the pull rope disc (7) is fixedly connected with a curtain lifting pull rope (8); the side wall of the rotating rod (3) is fixedly connected with a first return spring (4), and the end of the first return spring (4) is fixedly connected to the side wall of the pull rope disc (7); the side wall of the rotating rod (3) is fixedly connected with a fixed ring (15), and the side wall of the fixed ring (15) is fixedly connected with a second return spring (16); the end of the second return spring (16) away from the fixed ring (15) is fixedly connected with a clutch block (14); the end of the clutch block (14) away from the fixed ring (15) is engaged with a transmission block (13), the transmission block (13) and the rotating rod (3) are in sliding connection, and the side wall of the transmission block (13) is provided with a curtain bearing rod (2).

2. A clutch-type window shade lift according to claim 1, wherein: The side wall of the fixed cylinder (1) is fixedly connected with a fixed protrusion (18), and the end of the fixed protrusion (18) is rotatably connected with a push block (19); the top of the push block (19) is correspondingly sized to the clutch block (14); the side wall of the fixed cylinder (1) is fixedly connected with a return spring piece (21), and the return spring piece (21) contacts the side wall of the clutch block (14); the side wall of the push block (19) is fixedly connected with a curtain lowering pull rope (20), and the curtain lowering pull rope (20) penetrates the side wall of the fixed cylinder (1).

3. A clutch-type window shade lift according to claim 2 wherein: The end of the fixed cylinder (1) is fixedly connected with an inner fixed block (9), and a through hole is formed in the bottom of the inner fixed block (9); an outer fixed block (10) is arranged on the side wall of the inner fixed block (9), and a limiting groove is formed in the side wall of the outer fixed block (10); a limiting block (12) is arranged in the limiting groove, and a fixed piece (11) is fixedly connected to the end of the limiting block (12).

4. A clutch-type window shade lift according to claim 1 wherein: A sliding groove (17) is formed in the side wall of the rotating rod (3), and the size of the sliding groove (17) is correspondingly sized to the clutch block (14).

5. A clutch-type window shade lift according to claim 1 wherein: A clamping block (22) is fixedly connected to the inner side wall of the curtain bearing rod (2), and the size of the clamping block (22) is correspondingly sized to the transmission block (13).

6. A clutch-type window shade lift according to claim 1 wherein: The fixed cylinder (1), the inner fixed block (9), the outer fixed block (10), the fixed ring (15), the clutch block (14), and the push block (19) are made of plastic material; the rotating rod (3) is made of stainless steel material.

7. A clutch-type window shade lift according to claim 1 wherein: The size of the fixed ring (15) is correspondingly sized to the clutch block (14).

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