Venetian blind rolling device

Abstract

The invention discloses a venetian blind winding device which comprises a curtain box upper beam, and a rope winding head used for being connected with curtain pull beads, a rope winder connected with venetian blind blades and a descent control device playing a role in slowly descending the curtain blades are sequentially installed in the curtain box upper beam from right to left. The end of the rope winding head is connected with a winding connecting rod with the rectangular section, and the winding connecting rod sequentially penetrates through the rope winder and the descent control device. The device has the beneficial effects that the device is simple in structure, convenient to assemble, simple and convenient to operate and good in use function effect.

Description

Technical Field

[0001] The present invention relates to the technical field related to curtains, and in particular to a blind curtain rolling device. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the individualization of doors and windows. At the same time, the requirements for the performance and aesthetics of sunshade products for doors and windows are also getting higher and higher. Among them, blinds are widely used. Blinds are a common sunshade and decorative curtain. They are composed of multiple "blades" arranged in parallel. These blades can be fixed or movable. Blinds can not only adjust the light in the room, but also provide privacy protection and certain energy-saving effects. Among them, the rolling device of the blinds is installed above the curtains to roll up the blinds. The existing blinds are inconvenient to operate when in use, and the use effect is poor. Summary of the invention

[0003] The present invention aims to overcome the disadvantage of poor use effect in the prior art and provides a blind curtain rolling device with good use effect.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a blind curtain retracting device, including a curtain box upper beam, in which a rope winding head for connecting curtain beads, a rope winding device connected to the blind curtain blades, and a descending device for slowly descending the curtain blades are installed from right to left in the curtain box upper beam, and a retracting connecting rod with a rectangular cross-section is connected to the end of the rope winding head, and the retracting connecting rod passes through the rope winding device and the descending device in sequence.

[0005] Preferably, the rope winding control head comprises a main base mounted on the upper beam of the curtain box, the main base is detachably connected with a winding wheel clamp, a rope winding clutch assembly is installed in the main base, the rope winding clutch assembly comprises a rope winding clutch active gear and a rope winding clutch passive gear, the rope winding clutch active gear and the rope winding clutch passive gear are matched and connected, a connecting terminal connected to a winding connecting rod is provided at the end of the rope winding clutch passive gear, the rope winding clutch passive gear is rotatably connected with a resistance rotor, the rope winding clutch active gear is slidably sleeved with the resistance rotor, the other end of the resistance rotor is connected with a first planetary gear, the first planetary gear is connected with a driving gear tail, and the driving gear is connected with a driving gear tail. A bead wheel is connected to the tail of the gear, and the first planetary gear and the bead wheel are respectively placed on the left and right sides of the winding wheel clamp, and the outer wall of the winding wheel clamp is connected to a protective cover plate, and the protective cover plate is an annular plate. The bead wheel is placed in the protective cover plate, and the protective cover plate is provided with a bead rope opening, a bead rope baffle is provided above the bead rope opening, and a bead rope guide wheel is provided below the bead rope opening. A head sleeve is connected to the outer side of the winding wheel clamp, and a head notch is provided on the side wall of the head sleeve, and the head notch is aligned with the bead rope opening, and an installation block is provided on the inner bottom of the head sleeve, and a positioning protrusion is provided at the bottom of the winding wheel clamp, and the installation block is connected to the positioning protrusion.

[0006] Preferably, a first mounting hole is provided at the left end of the main base, and a mounting cavity is provided at the right end of the main base. The rope winding clutch passive gear is socketed with the first mounting hole, and the first planetary gear is placed in the mounting cavity. The rope winding clutch passive gear is provided with a limit card, and the limit card contacts the end face of the first mounting hole. The rope winding clutch passive gear is provided with a cylindrical hole, and the end of the resistance rotor is cylindrical and rotatably connected to the cylindrical hole. The mounting cavity is provided with a mounting slot, and the winding wheel clamp is provided with a mounting strip, and the mounting strip is clamped with the mounting slot. A limiting block three is provided on the end face of the planetary carrier of the first planetary gear, and the end of the resistance rotor is connected to a limiting block four, and the limiting block three corresponds to the limiting block four.

[0007] Preferably, a gear connecting cylinder is provided on the end face of the rope winding clutch driving gear, and a clutch driving block is sleeved on the gear connecting cylinder. A limiting block 1 is provided on the end face of the rope winding clutch driving gear, and a limiting block 2 is provided on the end face of the clutch driving block. The limiting block 1 corresponds to the limiting block 2. The inner wall section of the gear connecting cylinder and the middle section of the resistance rotor are both rectangular. The gear connecting cylinder is slidably sleeved on the middle part of the resistance rotor. A fixing column 1 is provided on the inner bottom of the main base. The clutch active block is provided with a spiral clutch active groove 1. A transition notch 1 is provided at the end of the clutch active groove 1, and the fixing column 1 is placed in the clutch active groove 1.

[0008] Preferably, the sun gear in the planetary gear is connected to the driving gear tail, a gear tail card is provided at the end of the driving gear tail, the gear tail card is provided with a gear tail slot, the bead wheel is provided with a center slot, the cross-section of the center slot is rectangular, the driving gear tail passes through the winding wheel clamp and the gear tail slot is engaged with the center slot, the bead wheel is provided with a bead rope groove, and a plurality of evenly arranged friction columns are provided on the inner side wall of the bead rope groove.

[0009] The cam is configured to be rotatable and has a base for mounting the cam on the base, the base being configured to be rotatable and have a base for mounting the cam on the base.

[0010] Preferably, the support belt clutch assembly includes a support belt clutch active gear and a support belt clutch passive gear, the support belt clutch active gear is matched and connected with the support belt clutch passive gear, the support belt clutch passive gear is rotatably connected with the belt winding base, the support belt clutch active gear is connected with an active guide rod with a rectangular cross-section, the two ends of the active guide rod are cylindrical, one end of the active guide rod is rotatably connected with the middle part of the support belt clutch passive gear, the other end of the active guide rod is rotatably connected with the base attachment, the active guide rod is connected with the winding connecting rod, and the support belt clutch active gear is connected with the support belt clutch passive gear. The clutch driving gear is provided with a spiral clutch active groove II, the end of the clutch active groove II is provided with a transition notch II, the lower end of the base attachment is provided with a fixed column II, the fixed column II is embedded in the clutch active groove II, the support belt clutch passive gear is sleeved with a torsion spring II, the end of the cloth belt dimming shell is provided with a dimming shell connecting block, the torsion spring II is connected to the dimming shell connecting block, the cloth belt dimming shell is connected to the dimming cloth belt of the curtain, the winding base is provided with a dimming cloth belt hole, and the dimming cloth belt passes through the dimming cloth belt hole.

[0011] Preferably, the winding core comprises a winding core shaft and a winding core block mounted on the winding core shaft, a winding core groove is arranged in the middle of the winding core block, a winding core opening for inserting the winding tape is arranged at the lower end of the winding core groove, a winding core side groove is arranged on the side wall of the winding core block, the winding core side groove is communicated with the winding tape opening, a winding core cover is embedded and installed in the winding core side groove, the winding core cover is sleeved with the winding core shaft and the winding core cover presses the winding tape, a plurality of evenly distributed protection card blocks are arranged on the side wall of the winding core block, a protection block assembly groove is arranged on the bottom surface of the winding tape base, the winding protection block comprises a protection block base and a protection block oblique block, the protection block oblique block is connected to the top surface of the protection block base, and the protection block base is embedded in the protection block assembly groove, An elastic spring is connected in the protection block assembly groove, and the elastic spring is connected to the protection block base. The protection block oblique block corresponds to the protection clamping block. The protection block base is provided with a spring positioning groove, and the elastic spring is placed in the spring positioning groove. The side wall of the protection block assembly groove is provided with a spring clamping column, and the end of the spring positioning groove is provided with a spring clamping pin, and the two ends of the elastic spring are respectively clamped with the spring clamping column and the spring clamping pin. The bottom of the tape base is provided with a tape feed port, and tape feed guide wheels are provided on both sides of the tape feed port. The side end of the protection block base is connected to a tape pulling block, and the tape pulling block is provided with a tape pulling hole. The tape pulling hole corresponds to the tape feed port and the tape passes through the tape pulling hole and the tape feed port.

[0012] Preferably, the descending device comprises a shell, the right end of the shell is connected to an outer cover plate, the left end of the shell is connected to a planetary gear set, the left side of the planetary gear set is connected to a friction disk, the right side of the planetary gear set is connected to a square clamp connected to the winding connecting rod, the square clamp is sleeved with the outer cover plate, a rear cover plate is provided on the left side of the planetary gear set, the friction disk is placed in the rear cover plate, the friction disk is connected to a friction plate, the friction plate is in contact with the inner wall of the rear cover plate, the rear cover plate is clamped with the shell, the planetary gear set comprises an outer ring gear, a first-stage planetary gear and a second-stage planetary gear, the first-stage planetary gear is connected to the second-stage planetary gear, the first-stage planetary gear and the second-stage planetary gear are both placed in the outer ring gear, The outer end of the first-stage planetary gear is provided with a gear slot, the square card is provided with a connecting block, the connecting block is embedded in the gear slot and the connecting block and the gear slot are connected by a torsion spring, the second-stage planetary gear is connected to the friction disk, the outer end surface of the friction disk is provided with a plurality of groups of parallel arranged fixing plates, the fixing plate is provided with an installation groove, the friction plate includes a fixing ring, the fixing ring is connected to the friction disk, the fixing ring is connected with a plurality of friction connecting plates, the friction connecting plates are placed between the fixing plates, the end of the friction connecting plates is connected with a friction pendulum, the friction pendulum is placed in the installation groove, the outer shell is provided with a limiting opening, the outer cover plate is provided with a limiting block, and the limiting block is connected to the limiting opening.

[0013] Preferably, the outer cover plate is provided with a fixing rod, a connecting buckle is provided at the end of the fixing rod, a connecting slot is provided on the outer shell, the connecting buckle is engaged with the connecting slot, and the inner side wall of the fixing rod is provided with an arc surface, which contacts the outer side wall of the planetary gear set.

[0014] The beneficial effects of the present invention are as follows: the first planetary gear and the rope clutch assembly provided in the rope winding head provided in the winding device can provide a rotation transmission effect, can improve the rotation transmission ratio, and make the use effect good; the rope winding head has a simple structure, so that the assembly is simple and convenient; the bead wheel provided can improve the use effect of the rope winding head; the winding protection block provided in the rope winding device of the winding device cooperates with the protection card block to effectively prevent accidental touch, play a protective role, and improve the use effect; the device has a simple structure and is easy to assemble; the support belt clutch assembly provided can control the rotation of the cloth belt dimming shell to realize the angle adjustment of the curtain blades The invention is integrated, so that the cloth tape dimming shell can be synchronously controlled to adjust the rotation of the curtain blades and the winding core to reel in the curtain tape through the rotation of the reel-in connecting rod, which makes the operation simple, convenient and has good functional effect; the outer shell and the outer cover plate are connected by a card connection, which is convenient for fixing the square card connected to the reel-in connecting rod, and ensures that the square card can stably transmit the rotational power of the reel-in connecting rod to the friction plate through the planetary gear set, so as to ensure the slow descent effect; the centrifugal force generated by the rotation of the friction plate makes the friction pendulum connected to the friction plate contact with the inner wall of the rear cover plate, so as to realize friction and realize deceleration and slow descent. The structural principle of this kind is simple and has good slow descent effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereoscopic view of the present invention; Figure 2 This is a three-dimensional view of the rope winding head in the present invention; Figure 3 The present invention is a rope head explosion Figure 1 ; Figure 4 The present invention is a rope head explosion Figure 2 ; Figure 5 yes Figure 3 Enlarged view at A in the middle; Figure 6 It is a three-dimensional view of the reel clamp in the present invention; Figure 7 This is an exploded view of the rope reel of the present invention; Figure 8 is a cross-sectional view of the rope reel of the present invention; Fig. 9 It is a three-dimensional view of the connection of the support belt clutch assembly in the present invention; Fig.10This is a view showing the connection between the reeling protection block and the tape reel base in the present invention; Fig.11 It is a three-dimensional view of the descending device of the present invention; Fig.12 It is an exploded view of the descending device of the present invention; Fig.13 It is a three-dimensional view of the friction disc in the present invention.

[0016] In the accompanying drawings, 1. Curtain box upper beam, 2. Rope winding head, 3. Rope winding device, 4. Descending device, 5. Winding connecting rod, 20. Main base, 21. Winding wheel clamp, 22. Rope winding clutch driving gear, 23. Rope winding clutch passive gear, 24. Connecting terminal, 25. Resistance rotor, 26. First planetary gear, 27. Driving gear tail, 28. Bead pulley, 29. Head jacket, 30. Winding core, 31. Winding base, 32. Support belt shell, 33. Cloth belt dimming shell, 34. Winding protection block, 35. Base accessories, 36. Support belt clutch driving gear, 37. Support belt clutch passive gear, 40. Shell, 41. Outer cover, 42. Planetary gear set, 43. Friction plate, 44. Square card, 45. Rear cover, 46. Friction plate, 200. First mounting hole, 201. Mounting cavity, 202. Mounting slot, 203. Fixed column 1, 210. Protective cover, 211. Bead rope opening, 212. Bead rope baffle, 213. Bead rope guide wheel, 214. Mounting card strip, 220. Limit card, 221. Gear connecting cylinder, 222. Clutch active block, 223. Limit block 1, 224. Limit block 2, 225. Clutch active slot 1, 226. Transition notch 1, 230. Column hole, 250. Limit block 4, 260. Limit block 3, 270. Gear tail card, 271. Gear tail slot, 280. Center slot, 281. Bead rope slot, 282. Friction column, 290. Head notch, 291. Mounting card, 292. Positioning protrusion, 300. winding core shaft, 301. winding core block, 302. winding core groove, 303. winding tape mouth, 304. winding core side groove, 305. winding core cover, 306. protection card block, 310. base card slot, 311. protection block assembly slot, 312. elastic spring, 313. spring card column, 314. tape inlet, 315. tape inlet guide wheel, 320. support belt buckle, 321. support belt notch, 330. dimming shell connection block, 331. dimming cloth belt hole, 340. protection block base, 341. protection block oblique block, 342. spring positioning groove, 343. spring card pin, 344. tape pull block, 345. tape pull hole, 350. fixed column 2, 360. active guide rod, 361. Clutch movable groove 2, 362. Transition notch 2, 370. Torsion spring 2, 400. Limiting port, 401. Connecting slot, 410. Fixing rod, 411. Connecting buckle, 412. Arc surface, 420. Outer ring gear, 421. Primary planetary gear, 422. Secondary planetary gear, 423. Gear slot, 430. Fixing plate, 431. Mounting slot, 450. Limiting block, 460. Fixing ring, 461. Friction connecting plate, 462. Friction pendulum plate. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement of the parts, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0021] Embodiment 1, as Figure 1-13 As shown, a rope winding head 2, a rope reel 3 and a descending retarder 4 are installed in sequence from right to left inside the upper beam 1 of the curtain box, wherein the end of the rope winding head 2 is connected to a winding connecting rod 5, which is a rod with a rectangular cross-section, and the winding connecting rod 5 passes through the rope reel 3 and is connected to the descending retarder 4.

[0022] Among them, the present rope winding head 2 includes a main base 20, and the main base 20 is installed inside the upper beam of the curtain box. A reel clamp 21 is arranged on the main base 20, and the reel clamp 21 and the main base 20 are detachably connected. This connection method is convenient for assembly and installation. A rope winding clutch assembly is installed inside the main base 20, and the rope winding clutch assembly includes a rope winding clutch active gear 22 and a rope winding clutch passive gear 23, and the two are matched and meshed. The end of the rope winding clutch passive gear 23 is connected to a connecting terminal 24, and the connecting terminal 24 is connected to the reeling connection of the curtain box, that is, the connecting terminal 24 plays a connecting role of providing rotational power to the outside. The resistance rotor 25 is rotatably connected to the other end of the rope winding clutch passive gear 23, wherein the rope winding clutch active gear 22 is slidably sleeved with the resistance rotor 25, that is, the rope winding clutch active gear 22 can slide on the resistance rotor 25. The other end of the resistance rotor 25 is connected to the first planetary gear 26, and the other end of the first planetary gear 26 is connected to the driving gear tail 27, and the driving gear tail 27 is connected to the bead puller 28. At the same time, the bead puller 28 is placed on the right side of the winding wheel clamp 21, and the first planetary gear 26 is placed on the left side of the winding wheel clamp 21, wherein a bead puller rope is wound around the bead puller 28, and pulling the bead puller rope can drive the rotation of the driving gear tail 27, and then drive the first planetary gear 26 to rotate, so as to drive the rope winding clutch assembly to realize transmission, and transmit the rotational power provided by the bead puller rope to the connecting terminal 24 through the first planetary gear 26 and the rope winding clutch assembly, so as to complete the rotational drive of the winding connecting rod of the curtain box. Then the winding operation of the blinds is realized. This device uses the first planetary gear 26 structure and the rope winding clutch assembly structure, which improves the transmission efficiency and makes the operation simple and convenient. At the same time, the structure is simple and convenient for assembly and installation.

[0023] Furthermore, the protective cover plate 210 provided on the reel clamp plate 21 is annular, which prevents the bead rope installed in the bead wheel 28 from moving out of the bead wheel 28. At the same time, the bead rope baffle plate 212 and the bead rope guide wheel 213 provided can guide the pulling of the bead rope, ensuring that the bead wheel 28 can be driven to rotate by the bead rope. The structure is simple and easy to assemble, and at the same time, it can ensure good use effect. The head notch 290 provided is aligned with the bead rope opening 211, which is convenient for the installation of the bead rope, making the installation and assembly simple, the operation convenient, and the use effect good. The installation block 291 provided cooperates with the positioning protrusion 292 at the bottom of the reel clamp plate 21 to achieve a snap connection, ensuring easy assembly and good use effect.

[0024] Further, a first mounting hole is provided on the left side of the main base 20, and a mounting cavity 201 is provided on the right side. The rope winding clutch passive gear 23 is installed in the first mounting hole, and the first planetary gear 26 is installed in the mounting cavity 201. A limit card 220 is provided on the left side of the rope winding clutch passive gear 23, and the limit card 220 contacts the first mounting hole to ensure that the rope winding clutch passive gear 23 is installed stably. At the same time, a cylindrical hole 230 is provided on the right side of the rope winding clutch passive gear 23, and the cylindrical hole 230 is connected to the cylindrical structure at the end of the resistance rotor 25. A mounting card slot 202 is provided on the mounting cavity 201, and the mounting card strip 214 provided on the reel clamping plate 21 is embedded in the mounting card slot 202 to complete the clamping connection between the main base 20 and the reel clamping plate 21. At the same time, the first planetary gear 26 is placed on the left side of the reel clamping plate 21, and the first planetary gear 26 is fixed by the clamping connection between the main base 20 and the reel clamping plate 21. A limit block 3 is provided on the planet carrier end face of the first planetary gear 26, and a limit block 4 250 is connected to the end of the resistance rotor 25. The first planetary gear 26 can be rotated to drive the resistance rotor 25 to rotate by the contact and engagement between the limit block 3 260 and the limit block 4 250. A gear connecting cylinder 221 is sleeved on the resistance rotor 25, and the gear connecting cylinder 221 is connected with a clutch active block 222. The gear connecting cylinder 221 can slide on the resistance rotor 25, wherein the limit block 1 223 contacts the limit block 224, so that the clutch active block 222 and the rope winding clutch active gear 22 can rotate synchronously. This structure can realize the clutch action of the driving rope winding clutch assembly and ensure the normal clutch function. The fixed column 203 installed inside the main base 20 is embedded in the clutch active groove 225 on the clutch active block 222. When the clutch active block rotates, the fixed column 203 can move along the clutch active groove 225, so that the clutch active block can achieve axial movement. When the fixed column 203 is placed at the end of the clutch active groove 225, the transition notch 226 can make the fixed column 203 rotate around the clutch active groove 225 all the time, ensuring that the clutch state is always carried out, which can ensure that the clutch function of the rope winding clutch assembly is normal. This structural setting can make the rotational power of the bead wheel 28 transmitted to the connecting terminal 24 through the first planetary gear 26 and the rope winding clutch assembly.

[0025] Furthermore, the sun gear disposed on the first planetary gear 26 is connected to the driving gear tail 27, and the driving gear tail 27 is connected to the bead wheel 28, so that the bead wheel 28 can drive the first planetary gear 26 to rotate when rotating, thereby realizing the normal transmission function of the first planetary gear 26 and ensuring the transmission effect of the rotation. The friction column 282 disposed on the inner wall of the bead rope groove 281 disposed on the bead wheel 28 can increase the friction force and improve the use effect. At the same time, the structure is simple and convenient, and it is easy to assemble and install.

[0026] Furthermore, the rope reel 3 is provided with a tape base 31, on which a reel core is mounted, and the reel core is connected to a reel connecting rod 5 that passes through the reel core, and the reel core is used to fix the end of the tape and wind the tape around the reel core when the reel core rotates. A detachable tape support shell 32 is provided on the tape base 31, and the tape support shell 32 is placed on the outside of the reel core to ensure the guidance of the tape when the tape is wound. A cloth tape dimming shell 33 is also provided on the outside of the tape support shell 32, and the cloth tape dimming shell 33 is used to drive the cloth tape to move, thereby adjusting the deflection angle of the blinds blades. At the same time, a reel protection block 34 is provided at the bottom of the tape base 31, and the reel protection block 34 is elastically connected to the tape base 31. The retracting protection block 34 is in contact with the tape. When an accidental touch occurs, the tape becomes relaxed, and the retracting protection block 34 moves under the action of elastic force and is engaged with the core, so that the core stops winding the tape, and the curtain blades stop retracting, which plays a protective role in preventing accidental touch. A base accessory 35 is also provided on the side of the tape base 31. The base accessory 35 is provided with a support belt clutch assembly, which is connected to the retracting connecting rod 5. At the same time, the support belt clutch assembly is connected to the cloth tape dimming shell 33. The clutch function of the support belt clutch assembly can realize the dimming operation of adjusting the cloth tape dimming shell 33. The base card slot 310 provided on the tape base 31 is connected to the support belt buckle 320 provided at the lower end of the support belt shell 32 to realize the installation of the support belt shell 32. This structure is simple and convenient to operate and easy to install. A dimming tape hole 331 is provided on the tape winding base 31 , and the dimming tape hole 331 is used to guide the passage of the tape, and plays a guiding function for the tape during dimming.

[0027] The support belt clutch driving gear 36 is matched and meshed with the support belt clutch driven gear 37, wherein the support belt clutch driven gear 37 is rotatably connected to the side end of the winding base 31, and the support belt clutch driving gear 36 is connected to an active guide rod 360, both ends of which are cylindrical, one end of the active guide rod 360 is rotatably connected to the middle of the support belt clutch driven gear 37, and both ends are rotatably connected to the base attachment 35, and the active guide rod 360 is slidably sleeved with the winding connecting rod 5, and the active guide rod 360 can slide along the winding connecting rod 5. At the same time, a clutch active groove 2 361 is provided on the support belt clutch driving gear 36, and at the same time, a clutch active groove 361 is provided on the base attachment 35. A fixing column 2 350 is provided at the lower end, and the fixing column 2 350 is embedded in the clutch movable groove 2 361. When the winding link 5 drives the support belt clutch active gear 36 to rotate, it moves synchronously along the axial direction to realize the meshing connection between the support belt clutch active gear 36 and the support belt clutch passive gear 37. At the same time, a transition notch 2 362 is provided at the end of the clutch movable groove 2 361. As the winding link 5 rotates, the fixing column 2 350 moves to the end of the clutch movable groove 2 361 and moves out of the transition notch 2 362, and continues to rotate around the clutch movable groove 2 361 to realize the maintenance of the clutch action. The structure is simple, and the assembly operation is convenient.

[0028] The torsion spring 2 370 is sleeved on the support belt clutch passive gear 37. At the same time, a dimming shell connecting block 330 is provided at the end of the cloth belt dimming shell 33. The dimming shell connecting block 330 is connected to the torsion spring 2 370. The support belt clutch passive gear 37 rotates under the meshing connection drive of the support belt clutch active gear 36, so that the support belt clutch passive gear 37 rotates. Initially, the torsion spring 2 370 is tightly connected to the support belt clutch passive gear 37. In this state, the cloth belt dimming shell 33 can be driven to rotate to complete the adjustment of the curtain leaf. When the curtain blade angle is adjusted, when it is rotated to the end, the torsion spring 2 370 is squeezed, so that the torsion spring 2 370 and the support belt clutch driven gear 37 become loose, and the cloth tape dimming shell 33 stops rotating. At this time, the cloth tape dimming shell 33 cannot adjust the curtain blade angle, and the winding link 5 can continue to drive the winding core to complete the winding of the winding tape. This structure is simple, and the curtain blade angle adjustment and curtain blade winding operation can be completed only by rotating the winding link 5. It has a simple structure, is easy to assemble, and has a good use effect.

[0029] Among them, the winding core is composed of a winding core shaft 300 and a winding core block 301, and the winding core shaft 300 is connected to the winding connecting rod 5. The rotation of the winding connecting rod 5 can drive the rotation of the winding core shaft 300 to complete the winding operation of the tape. At the same time, a winding core groove 302 is provided on the winding core block 301, and the winding core groove 302 is used to store the tape. A tape mouth 303 is provided at the lower end of the winding core groove 302. At the same time, a winding core side groove 304 is provided on the side wall of the winding core block 301, and the tape mouth 303 is connected to the winding core side groove 304. The tape is inserted into the tape mouth 303 and pressed by the winding core cover 305 to complete the installation of the tape. This structure facilitates the installation of the tape, makes the operation simple and convenient, and has strong practicality.

[0030] A plurality of protective card blocks 306 are arranged on the side wall of the winding core block 301. At the same time, a protective block assembly groove 311 is arranged on the winding belt base 31. The protective block base 340 of the winding protection block 34 is installed in the protective block assembly groove 311. The protective block oblique block 341 corresponds to the protective card block 306. At the same time, the protective block base 340 is installed in the protective block assembly groove 311 through an elastic spring 312 to realize the elastic connection of the winding protection block 34. When the curtain blades are lowered, the winding belt is in a straight state. The winding protection block 34 compresses the elastic spring 312 so that the protection block bevel block 341 is separated from the protection card block 306, so that the curtain blades can be quickly lowered. When the curtain blades are lowered and an accidental touch occurs, the winding tape becomes bent and relaxed. Under the action of the elastic spring 312, the protection block bevel block 341 on the winding protection block 34 contacts the protection card block 306, completing the rotation locking of the winding core and realizing the anti-accidental touch operation. This structure is simple and easy to assemble and operate. At the same time, this structure can effectively prevent accidental touch. The spring positioning groove 342 is used to fix the elastic spring 312, which can ensure the stability of the elastic spring 312. The spring clamping column 313 set in the protection block assembly groove 311 and the spring clamping pin 343 set in the spring positioning groove 342 jointly clamp the elastic spring 312 to realize the elastic connection between the winding protection block 34 and the winding tape base 31, ensuring the anti-accidental touch function.

[0031] Among them, the tape base 31 is provided with a tape inlet 314, which is used for the entry of the tape. The tape feed guide wheels 315 arranged on both sides of the tape inlet 314 play a guiding role, which facilitates the entry of the tape and ensures the flatness of the tape. The tape pulling hole 345 arranged on the tape pulling block 344 arranged on the protection block base 340 is used for the tape to pass through. Under the action of the elastic spring 312, the tape pulling block 344 pulls the tape, so that the tape pulling hole 345 and the tape inlet 314 are misaligned, so that the tape stops moving, thereby achieving the effect of preventing accidental touch and improving the use effect.

[0032] Furthermore, the descending slow device 4 is provided with a housing 40 , an outer cover plate 45 is provided at the right end of the housing 40 , a planetary gear set 42 is provided at the left end of the housing 40 , and a rear cover plate 41 is provided on the left side of the planetary gear set 42 .

[0033] The housing 40 is provided with four limit openings 400, and the outer cover 45 is provided with four limit blocks 450, which are embedded in the limit openings 400 to complete the clamping of the outer cover 45 and the housing 40. The outer cover 45 is provided with a through hole, which is used to sleeve the square card 44.

[0034] The planetary gear set 42 includes an outer ring gear 420, a primary planetary gear 421 and a secondary planetary gear 422, wherein the central gear of the secondary planetary gear 422 is inserted into the middle of the primary planetary gear 421 to complete the gear transmission connection between the two, wherein the primary planetary gear 421 and the secondary planetary gear 422 are both placed inside the outer ring gear 420 to achieve the meshing connection of the gears. A gear slot 423 is provided at the end of the primary planetary gear 421, and a connecting block 440 is provided at the inner end of the square card 44, and the connecting block 440 is embedded in the gear slot 423. At the same time, the connecting block 440 and the gear slot 423 are connected by a torsion spring, and a winding connecting rod is connected to the outer end of the square card 44. The rotation of the winding connecting rod can drive the primary planetary gear to rotate, thereby driving the secondary planetary gear 422 to rotate. The central gear of the secondary planetary gear 422 is connected to the friction plate 43, and the rotation of the friction plate 43 is driven by the transmission of the planetary gear. Four groups of parallel fixed plates 430 are provided on the outer end surface of the friction disk 43, and an installation groove 431 is provided on the fixed plate 430, wherein a convex ring is provided in the middle of the friction disk 43, and a fixed ring 460 provided in the friction plate 46 is sleeved with the convex ring to realize the installation of the friction plate 46, and a plurality of friction connecting plates 461 are provided on the outer wall of the fixed ring 460, and the friction connecting plates 461 are embedded between the parallel fixed plates 430, and a friction swing plate 462 is connected to the outer end of the friction connecting plate 461, wherein the friction swing plate 462 is triangular in shape, and when the friction disk 43 rotates, the friction swing plate 462 can be swung outward due to the action of centrifugal force, so that the friction swing plate 462 contacts the inner wall of the rear cover plate 41, generating friction, and with the increase of the rotation speed, the friction also gradually increases, thereby realizing the reduction of the rotation speed of the square card 44, that is, the curtain can be lowered slowly when it is lowered. At the same time, when the friction disc 43 rotates in the reverse direction, the friction swing piece 462 swings inwards and does not contact and rub against the rear cover plate 41, thus not affecting the rising of the curtain.

[0035] Four fixing rods 410 are arranged at the end of the rear cover plate 41. The inner wall of the fixing rod 410 is an arcuate surface 412, and the arcuate surface 412 is in contact with the outer ring gear 420. At the same time, a connecting buckle 411 is arranged at the end of the fixing rod 410, and the connecting buckle 411 is engaged with the connecting slot 401 arranged on the outer shell 40. After the connection between the rear cover plate 41 and the outer shell 40 is completed, the planetary gear set 42 is fixed. This connection structure is simple, and the operation is simple and convenient during the assembly operation.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A blinds retracting device, characterized in that: The invention comprises a curtain box upper beam (1), wherein a rope winding head (2) for connecting a curtain bead, a rope winding device (3) connected to the blinds, and a descending device (4) for slowing down the curtain blades are installed in sequence from right to left in the curtain box upper beam (1), wherein the end of the rope winding head (2) is connected to a winding connecting rod (5) having a rectangular cross section, and the winding connecting rod (5) passes through the rope winding device (3) and the descending device (4) in sequence.

2. A blind retracting device according to claim 1, characterized in that: The rope winding control head (2) comprises a main base (20) mounted on the upper beam (1) of the curtain box, the main base (20) being detachably connected to a winding wheel clamp (21), a rope winding clutch assembly being installed in the main base (20), the rope winding clutch assembly comprising a rope winding clutch driving gear (22) and a rope winding clutch passive gear (23), the rope winding clutch driving gear (22) and the rope winding clutch passive gear (23) being matched and connected, a connecting terminal (24) connected to a winding connecting rod (5) being provided at the end of the rope winding clutch passive gear (23), the rope winding clutch passive gear (23) being rotatably connected to a resistance rotor (25), the rope winding clutch driving gear (22) being slidably sleeved with the resistance rotor (25), the other end of the resistance rotor (25) being connected to a first planetary gear (26), the first planetary gear (26) being connected to a driving gear tail (27), the driving gear tail (27) being connected to a bead wheel (28), the first planetary gear The bead pull wheel (26) and the bead pull wheel (28) are respectively arranged on the left and right sides of the reel clamp (21); the outer wall of the reel clamp (21) is connected to a protective cover plate (210); the protective cover plate (210) is an annular plate; the bead pull wheel (28) is arranged inside the protective cover plate (210); the protective cover plate (210) is provided with a bead pull rope opening (211); a bead pull rope baffle (212) is arranged above the bead pull rope opening (211); and a bead pull rope baffle (212) is arranged below the bead pull rope opening (211). A bead rope guide wheel (213) is provided, the outer side of the reel clamp (21) is connected to a head sleeve (29), the side wall of the head sleeve (29) is provided with a head notch (290), the head notch (290) is aligned with the bead rope opening (211), the inner bottom of the head sleeve (29) is provided with a mounting block (291), the bottom of the reel clamp (21) is provided with a positioning protrusion (292), and the mounting block (291) is connected to the positioning protrusion (292).

3. A blind retracting device according to claim 2, characterized in that: The left end of the main base (20) is provided with a first mounting hole (200), the right end of the main base (20) is provided with a mounting cavity (201), the rope winding clutch passive gear (23) is sleeved with the first mounting hole (200), the first planetary gear (26) is placed in the mounting cavity (201), the rope winding clutch passive gear (23) is provided with a limit card (220), the limit card (220) is in contact with the end surface of the first mounting hole (200), the rope winding clutch passive gear (23) is provided with a columnar hole (230), The end of the resistance rotor (25) is cylindrical and rotatably connected to the cylindrical hole (230); the mounting cavity (201) is provided with a mounting slot (202); the winding wheel clamp (21) is provided with a mounting strip (214); the mounting strip (214) is engaged with the mounting slot (202); a limiting block three (260) is provided on the end surface of the planetary carrier of the first planetary gear (26); the end of the resistance rotor (25) is connected to a limiting block four (250); the limiting block three (260) corresponds to the limiting block four (250).

4. The blind retracting device according to claim 2, characterized in that: The end surface of the rope-winding clutch driving gear (22) is provided with a gear connecting cylinder (221), the gear connecting cylinder (221) is sleeved with a clutch driving block (222), the end surface of the rope-winding clutch driving gear (22) is provided with a limiting block 1 (223), the end surface of the clutch driving block (222) is provided with a limiting block 2 (224), the limiting block 1 (223) corresponds to the limiting block 2 (224), and the inner wall cross-section of the gear connecting cylinder (221) and The middle section of the resistance rotor (25) is rectangular, the gear connecting tube (221) is slidably sleeved with the middle of the resistance rotor (25), the inner bottom of the main base (20) is provided with a fixing column (203), the clutch active block (222) is provided with a spiral clutch active groove (225), the end of the clutch active groove (225) is provided with a transition notch (226), and the fixing column (203) is placed in the clutch active groove (225).

5. The blind retracting device according to claim 2, characterized in that: The sun gear in the planetary gear (26) is connected to the driving gear tail (27); a gear tail card (270) is provided at the end of the driving gear tail (27); the gear tail card (270) is provided with a gear tail card slot (271); the bead pull wheel (28) is provided with a central groove (280); the central groove (280) has a rectangular cross section; the driving gear tail (27) passes through the winding wheel clamp (21) and the gear tail card slot (271) is card-engaged with the central groove (280); the bead pull wheel (28) is provided with a bead pull rope groove (281); and the inner side wall of the bead pull rope groove (281) is provided with a plurality of evenly arranged friction columns (282).

6. The blind retracting device according to claim 1, characterized in that: The rope reel (3) is provided with a reel core (30) for winding a tape, the reel core (30) being connected to a reeling connecting rod (5), two ends of the reel core (30) being connected to a tape reel base (31) for mounting the reel core (30), a tape support shell (32) being detachably connected to the tape reel base (31), the tape support shell (32) being arranged on the outside of the reel core (30), a swingable cloth tape dimming shell (33) being arranged on the outside of the tape support shell (32), a reeling protection block (34) being elastically connected to the tape reel base (31), the reeling protection block (34) being corresponding to the reel core (30), the reeling protection block (34) being in contact with the tape, and a reeling base (31) being arranged on the side thereof. A base accessory (35) is provided, a support belt clutch assembly is arranged on the outside of the winding core (30), and the support belt clutch assembly is connected to the winding connecting rod (5), the support belt clutch assembly is placed inside the base accessory (35), and one end of the support belt clutch assembly is connected to the base accessory (35), the support belt clutch assembly is connected to the cloth tape dimming shell (33), a base slot (310) is arranged at the bottom of the winding base (31), a support belt buckle (320) is arranged at the lower end of the support belt shell (32), the support belt buckle (320) is clamped with the base slot (310), and a support belt notch (321) is arranged at the lower end of the support belt shell (32), and the support belt notch (321) corresponds to the winding protection block (34).

7. The blind retracting device according to claim 6, characterized in that: The support belt clutch assembly comprises a support belt clutch driving gear (36) and a support belt clutch passive gear (37), the support belt clutch driving gear (36) is matched and connected with the support belt clutch passive gear (37), the support belt clutch passive gear (37) is rotatably connected with the belt winding base (31), the support belt clutch driving gear (36) is connected with an active guide rod (360) with a rectangular cross section, the two ends of the active guide rod (360) are cylindrical, one end of the active guide rod (360) is rotatably connected with the middle part of the support belt clutch passive gear (37), the other end of the active guide rod (360) is rotatably connected with the base attachment (35), the active guide rod (360) is connected with the winding connecting rod (5), and the support belt clutch driving gear (36) is provided with a plurality of guide rods (360) and a plurality of guide rods (360) connected to the belt winding connecting rod (5). A second spiral clutch movable groove (361) is provided, and a second transition notch (362) is provided at the end of the second clutch movable groove (361). A second fixing column (350) is provided at the lower end of the base attachment (35), and the second fixing column (350) is embedded in the second clutch movable groove (361). The support belt clutch passive gear (37) is sleeved with a second torsion spring (370). A dimming shell connecting block (330) is provided at the end of the cloth belt dimming shell (33), and the second torsion spring (370) is connected to the dimming shell connecting block (330). The cloth belt dimming shell (33) is connected to the dimming cloth belt of the curtain, and the tape winding base (31) is provided with a dimming cloth belt hole (331), and the dimming cloth belt passes through the dimming cloth belt hole (331).

8. The blind retracting device according to claim 6, characterized in that: The winding core (30) comprises a winding core shaft (300) and a winding core block (301) mounted on the winding core shaft (300); a winding core groove (302) is arranged in the middle of the winding core block (301); a winding tape opening (303) for inserting a winding tape is arranged at the lower end of the winding core groove (302); a winding core side groove (304) is arranged on the side wall of the winding core block (301); the winding core side groove (304) is communicated with the winding tape opening (303); a winding core cover (305) is embedded and mounted in the winding core side groove (304); the winding core cover (305) is 05) is sleeved with the winding core shaft (300) and the winding core cover (305) presses the winding tape, the side wall of the winding core block (301) is provided with a plurality of evenly distributed protection card blocks (306), the bottom surface of the winding tape base (31) is provided with a protection block assembly groove (311), the winding protection block (34) comprises a protection block base (340) and a protection block inclined block (341), the protection block inclined block (341) is connected to the top surface of the protection block base (340), the protection block base (340) is embedded in the protection block assembly groove (311), and the protection block assembly An elastic spring (312) is connected to the matching groove (311), the elastic spring (312) is connected to the protection block base (340), the protection block inclined block (341) corresponds to the protection clamping block (306), the protection block base (340) is provided with a spring positioning groove (342), the elastic spring (312) is placed in the spring positioning groove (342), the side wall of the protection block assembly groove (311) is provided with a spring clamping column (313), the end of the spring positioning groove (342) is provided with a spring clamping pin (343), the elastic spring (312) is provided with a spring clamping column (313), and the elastic spring (312) is provided with a spring clamping pin (343). The two ends of the spring (312) are respectively engaged with the spring clamping column (313) and the spring clamping pin (343); the bottom of the tape base (31) is provided with a tape inlet (314); both sides of the tape inlet (314) are provided with tape inlet guide wheels (315); the side end of the protection block base (340) is connected with a tape pull block (344); the tape pull block (344) is provided with a tape pull hole (345); the tape pull hole (345) corresponds to the tape inlet (314), and the tape passes through the tape pull hole (345) and the tape inlet (314).

9. The blind retracting device according to claim 1, characterized in that: The descending device (4) comprises a housing (40), the right end of the housing (40) is connected to an outer cover plate (45), the left end of the housing (40) is connected to a planetary gear set (42), the left side of the planetary gear set (42) is connected to a friction plate (43), the right side of the planetary gear set (42) is connected to a square clamp (44) connected to a winding connecting rod (5), the square clamp (44) is sleeved with the outer cover plate (45), the left side of the planetary gear set (42) is provided with a rear cover plate (41), the friction plate (43) is arranged in the rear cover plate (41), and the planetary gear set (42) is connected to a friction plate (43). The friction disc (43) is connected to a friction plate (46), the friction plate (46) is in contact with the inner wall of the rear cover plate (41), the rear cover plate (41) is snap-connected with the housing (40), the planetary gear set (42) comprises an outer ring gear (420), a first-stage planetary gear (421) and a second-stage planetary gear (422), the first-stage planetary gear (421) and the second-stage planetary gear (422) are connected, the first-stage planetary gear (421) and the second-stage planetary gear (422) are both placed in the outer ring gear (420), the first-stage planetary gear (421) A gear slot (423) is provided at the outer end, the square card (44) is provided with a connecting block (440), the connecting block (440) is embedded in the gear slot (423), and the connecting block (440) and the gear slot (423) are connected via a torsion spring, the secondary planetary gear (422) is connected to the friction disk (43), the outer end surface of the friction disk (43) is provided with a plurality of groups of fixing plates (430) arranged in parallel, the fixing plates (430) are provided with mounting grooves (431), and the friction plate (46) includes a fixing ring ( 460), the fixing ring (460) is connected to the friction disk (43), the fixing ring (460) is connected to a plurality of friction connecting plates (461), the friction connecting plates (461) are placed between the fixing plates (430), the ends of the friction connecting plates (461) are connected to friction swing plates (462), the friction swing plates (462) are placed in the mounting groove (431), the housing (40) is provided with a limiting opening (400), the outer cover plate (45) is provided with a limiting block (450), and the limiting block (450) is connected to the limiting opening (400).

10. The blind retracting device according to claim 9, characterized in that: The outer cover plate (45) is provided with a fixing rod (410), the end of the fixing rod (410) is provided with a connecting buckle (411), the outer shell (40) is provided with a connecting buckle (401), the connecting buckle (411) is engaged with the connecting buckle (401), and the inner side wall of the fixing rod (410) is provided with an arc surface (412), and the arc surface (412) is in contact with the outer side wall of the planetary gear set (42).

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