Venetian blind rolling mechanism

Abstract

The utility model discloses a venetian blind winding mechanism 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 advantages of being simple in structure, convenient to assemble, easy and convenient to operate and good in using function effect.

Description

Technical Field

[0001] The utility model relates to the technical field of curtains, in particular to a rolling mechanism for a venetian blind. Background Art

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

[0003] The utility model aims to overcome the deficiency of poor use effect in the prior art and provides a rolling mechanism for a venetian blind with good use effect.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: a rolling mechanism for a venetian blind, including the upper beam of a curtain box. Inside the upper beam of the curtain box, a cord lock for connecting a curtain pull bead, a cord winder connected to the blades of the venetian blind, and a descender for slowing down the descent of the curtain blades are sequentially installed from right to left. The end of the cord lock is connected to a retractable connecting rod with a rectangular cross-section, and the retractable connecting rod sequentially passes through the cord winder and the descender.

[0005] Preferably, the rope winding head includes a main base installed on the upper beam of the curtain box. The main base is detachably connected with a reel clamp. A rope winding clutch assembly is installed in the main base. The rope winding clutch assembly includes a rope winding clutch driving gear and a rope winding clutch driven gear. The rope winding clutch driving gear and the rope winding clutch driven gear are matched and connected. A connection terminal connected with the winding link is arranged at the end of the rope winding clutch driven gear. A resistance rotor is rotatably connected to the rope winding clutch driven gear. The rope winding clutch driving gear is slidably sleeved on 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. The driving gear tail is connected with a pull bead wheel. The first planetary gear and the pull bead wheel are respectively arranged on the left and right sides of the reel clamp. A protective cover plate is connected to the outer side wall of the reel clamp. The protective cover plate is an annular plate. The pull bead wheel is arranged in the protective cover plate. The protective cover plate is provided with a pull bead rope opening. A pull bead rope baffle is arranged above the pull bead rope opening. A pull bead rope guide wheel is arranged below the pull bead rope opening. A head outer cover is connected to the outside of the reel clamp. A head notch is arranged on the side wall of the head outer cover. The head notch is aligned with the pull bead rope opening. An installation block is arranged at the inner bottom of the head outer cover. A positioning protrusion is arranged at the bottom of the reel clamp. The installation block is connected with the positioning protrusion.

[0006] Preferably, a first installation hole is arranged at the left end of the main base. An installation cavity is arranged at the right end of the main base. The rope winding clutch driven gear is sleeved on the first installation hole. The first planetary gear is arranged in the installation cavity. The rope winding clutch driven gear is provided with a limit card. The limit card is in contact with the end face of the first installation hole. The rope winding clutch driven gear is provided with a cylindrical hole. The end of the resistance rotor is cylindrical and is rotatably connected with the cylindrical hole. The installation cavity is provided with an installation card slot. The reel clamp is provided with an installation card strip. The installation card strip is clamped with the installation card slot. A limit block three is arranged at the end face of the planet carrier of the first planetary gear. A limit block four is connected to the end of the resistance rotor. The limit block three corresponds to the limit block four.

[0007] Preferably, a gear connection cylinder is arranged at the end face of the rope winding clutch driving gear. A clutch driving block is sleeved on the gear connection cylinder. A limit block one is arranged at the end face of the rope winding clutch driving gear. A limit block two is arranged at the end face of the clutch driving block. The limit block one corresponds to the limit block two. The inner wall section of the gear connection cylinder and the middle section of the resistance rotor are both rectangular. The gear connection cylinder is slidably sleeved on the middle part of the resistance rotor. A fixing column one is arranged at the inner bottom of the main base. The clutch driving block is provided with a spiral clutch moving slot one. A transition notch one is arranged at the end of the clutch moving slot one. The fixing column one is arranged in the clutch moving slot one.

[0008] Preferably, the sun gear in the planetary gear is connected to the tail of the driving gear. A gear tail card is provided at the end of the driving gear tail. The gear tail card is provided with a gear tail card slot. The pull bead wheel is provided with a central slot. The cross-section of the central slot is rectangular. The driving gear tail passes through the reel splint and the gear tail card slot is clamped with the central slot. The pull bead wheel is provided with a pull bead rope slot. A plurality of uniformly arranged friction posts are provided on the inner side wall of the pull bead rope slot.

[0009] Preferably, the rewinder is provided with a reel core for winding the tape. The reel core is connected to the retracting link. Both ends of the reel core are connected with a tape base for installing the reel core. A support tape shell is detachably connected to the tape base. The support tape shell is placed outside the reel core. A swingable tape light-adjusting shell is provided on the outside of the support tape shell. The tape base is elastically connected with a retracting protection block. The retracting protection block corresponds to the reel core. The retracting protection block contacts the tape. A base accessory is provided on the side of the tape base. A support tape clutch assembly is provided outside the reel core and the support tape clutch assembly is connected to the retracting link. The support tape clutch assembly is placed inside the base accessory and one end of the support tape clutch assembly is connected to the base accessory. The support tape clutch assembly is connected to the tape light-adjusting shell. A base card slot is provided at the bottom of the tape base. A support tape buckle is provided at the lower end of the support tape shell. The support tape buckle is clamped with the base card slot. A support tape notch is provided at the lower end of the support tape shell. The support tape notch corresponds to the retracting protection block.

[0010] Preferably, the support tape clutch assembly includes a support tape clutch driving gear and a support tape clutch driven gear. The support tape clutch driving gear is connected to the support tape clutch driven gear in a matching manner. The support tape clutch driven gear is rotatably connected to the tape base. The support tape clutch driving gear is connected with an active guide rod with a rectangular cross-section. Both ends of the active guide rod are cylindrical. One end of the active guide rod is rotatably connected to the middle of the support tape clutch driven gear. The other end of the active guide rod is rotatably connected to the base accessory. The active guide rod is connected to the retracting link. The support tape clutch driving gear is provided with a spiral clutch moving slot two. A transition notch two is provided at the end of the clutch moving slot two. A fixing post two is provided at the lower end of the base accessory. The fixing post two is embedded into the clutch moving slot two. A torsion spring two is sleeved on the support tape clutch driven gear. A light-adjusting shell connecting block is provided at the end of the tape light-adjusting shell. The torsion spring two is connected to the light-adjusting shell connecting block. The tape light-adjusting shell is connected to the light-adjusting tape of the curtain. The tape base is provided with a light-adjusting tape hole. The light-adjusting tape passes through the light-adjusting tape hole.

[0011] Preferably, the core includes a core shaft and core blocks mounted on the core shaft. A core groove is provided in the middle of the core blocks. A tape insertion port for inserting the tape is provided at the lower end of the core groove. A core side groove is provided on the side wall of the core blocks. The core side groove communicates with the tape insertion port. A core cover is embedded in the core side groove. The core cover is sleeved with the core shaft and the core cover presses the tape. A number of evenly distributed protection blocks are provided on the side wall of the core blocks. A protection block assembly groove is provided on the bottom surface of the tape base. The tape retraction protection block includes a protection block base and a protection block inclined block. The protection block inclined block is connected to the top surface of the protection block base. The protection block base is embedded in the protection block assembly groove. A elastic spring is connected in the protection block assembly groove. The elastic spring is connected to the protection block base. The protection block inclined block corresponds to the protection block. A spring positioning groove is provided on the protection block base. The elastic spring is placed in the spring positioning groove. A spring clamping post is provided on the side wall of the protection block assembly groove. A spring clamping pin is provided at the end of the spring positioning groove. The two ends of the elastic spring are respectively clamped with the spring clamping post and the spring clamping pin. An inlet port is provided at the bottom of the tape base. Inlet guide wheels are provided on both sides of the inlet port. A tape pulling block is connected to the side end of the protection block base. A tape pulling hole is provided on the tape pulling block. The tape pulling hole corresponds to the inlet port and the tape passes through the tape pulling hole and the inlet port.

[0012] Preferably, the descender includes a housing. An outer cover plate is connected to the right end of the housing. A planetary gear set is connected to the left end of the housing. A friction disc is connected to the left side of the planetary gear set. A square card connected to the retraction link is connected to the right side of the planetary gear set. The square card is sleeved with the outer cover plate. A rear cover plate is provided on the left side of the planetary gear set. The friction disc is placed in the rear cover plate. The friction disc is connected with a friction plate. The friction plate contacts the inner side wall of the rear cover plate. The rear cover plate is clamped with the housing. The planetary gear set includes an outer ring gear, a first-stage planetary gear and a second-stage planetary gear. The first-stage planetary gear and the second-stage planetary gear are connected. The first-stage planetary gear and the second-stage planetary gear are both placed in the outer ring gear. A gear slot is provided at the outer end of the first-stage planetary gear. 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 first torsion spring. The second-stage planetary gear is connected to the friction disc. A number of groups of parallel fixed pieces are provided on the outer end face of the friction disc. An installation groove is provided on the fixed piece. The friction plate includes a fixed ring. The fixed ring is connected with the friction disc. The fixed ring is connected with a number of friction connecting pieces. The friction connecting pieces are placed between the fixed pieces. The end of the friction connecting piece is connected with a friction swing piece. The friction swing piece is placed in the installation groove. A limiting port is provided on the housing. A limiting block is provided on the outer cover plate. The limiting block is connected with the limiting port.

[0013] Preferably, the outer cover plate is provided with a fixing rod, the end of the fixing rod is provided with a connecting buckle, the outer shell is provided with a connecting card slot, the connecting buckle is clamped with the connecting card slot, the inner side wall of the fixing rod is provided with an arc surface, and the arc surface is in contact with the outer side wall of the planetary gear set.

[0014] The beneficial effects of the present utility model are as follows: The first planetary gear and the rope winding clutch assembly provided in the rope winding head of the present winding device can provide a rotation transmission effect, improve the rotation transmission ratio, and have a good use effect; the structure of the rope winding head is simple, making the assembly and assembly simple and convenient; the provided pull bead wheel can improve the use effect of the present rope winding head; the winding protection block and the protection card block provided in the rope winder of the present winding device cooperate to effectively prevent accidental touch, play a protective role, and improve the use effect; the device has a simple structure and is convenient for assembly and assembly; the provided stay belt clutch assembly can control the rotation of the cloth belt light regulating shell, realize the angle adjustment of the curtain blades, and realize the synchronous control of the cloth belt light regulating shell to adjust the rotation of the curtain blades and the winding of the curtain tape by the winding core through the rotation of the winding connecting rod, making the operation simple, convenient, and having a good use function effect; the outer shell and the outer cover plate are connected in a clamping form, which is convenient for fixing the square card connected to the winding connecting rod, ensuring that the square card can stably transmit the rotation power of the winding connecting rod to the friction disc through the planetary gear set, ensuring the slow descent effect; the centrifugal force generated by the rotation of the friction disc makes the friction swing piece connected to the friction disc contact with the inner side wall of the rear cover plate to realize friction and achieve deceleration and slow descent. This structural principle is simple and has a good effect on realizing the slow descent. Description of the Drawings

[0015] Figure 1 is the three-dimensional view of the present utility model;

[0016] Figure 2 is the three-dimensional view of the rope winding head in the present utility model;

[0017] Figure 3 is the exploded view of the rope winding head in the present utility model Figure 1 ;

[0018] Figure 4 is the exploded view of the rope winding head in the present utility model Figure 2 ;

[0019] Figure 5 is Figure 3 the enlarged view at A in

[0020] Figure 6 is the three-dimensional view of the reel clamping plate in the present utility model;

[0021] Figure 7 is the exploded view of the rope winder in the present utility model;

[0022] Figure 8 It is a cross-sectional view of the rope winder in the present utility model;

[0023] Figure 9 It is a three-dimensional view of the connection part of the stay belt clutch assembly in the present utility model;

[0024] Figure 10 It is a connection view of the winding protection block and the tape base in the present utility model;

[0025] Figure 11 It is a three-dimensional view of the descender in the present utility model;

[0026] Figure 12 It is an exploded view of the descender in the present utility model;

[0027] Figure 13 It is a three-dimensional view of the friction disc in the present utility model.

[0028] Drawing

[0029] 1. Upper beam of curtain box, 2. Rope winding head, 3. Rope winding device, 4. Descent speed reducer, 5. Winding link, 20. Main base, 21. Reel clamping plate, 22. Active gear of rope winding clutch, 23. Driven gear of rope winding clutch, 24. Connection terminal, 25. Resistance rotor, 26. First planetary gear, 27. Tail of active gear, 28. Bead wheel, 29. Outer casing of head, 30. Reel core, 31. Winding tape base, 32. Belt support shell, 33. Cloth tape dimming shell, 34. Winding protection block, 35. Base accessory, 36. Active gear of belt support clutch, 37. Driven gear of belt support clutch, 40. Outer shell, 41. Outer cover plate, 42. Planetary gear set, 43. Friction disc, 44. Square clamp, 45. Rear cover plate, 46. Friction plate, 200. First mounting hole, 201. Mounting cavity, 202. Mounting clamping groove, 203. First fixing column, 210. Protection cover plate, 211. Bead rope opening, 212. Bead rope baffle, 213. Bead rope guide wheel, 214. Mounting clamping strip, 220. Limit clamp, 221. Gear connection cylinder, 222. Active clutch block, 223. First limit block, 224. Second limit block, 225. First clutch moving slot, 226. First transition notch, 230. Cylindrical hole, 250. Fourth limit block, 260. Third limit block, 270. Gear tail card, 271. Gear tail clamping groove, 280. Central groove, 281. Bead rope groove, 282. Friction column, 290. Notch of head, 291. Mounting block, 292. Positioning protrusion, 300. Reel core shaft, 301. Reel core block, 302. Reel core groove, 303. Winding tape opening, 304. Side groove of reel core, 305. Reel core cover, 306. Protection block, 310. Base clamping groove, 311. Assembly groove of protection block, 312. Elastic spring, 313. Spring clamping column, 314. Tape inlet, 315. Tape inlet guide wheel, 320. Belt support buckle, 321. Belt support notch, 330. Dimming shell connection block, 331. Dimming cloth tape hole, 340. Base of protection block, 341. Inclined block of protection block, 342. Spring positioning groove, 343. Spring clamping pin, 344. Winding tape pulling block, 345. Winding tape pulling hole, 350. Second fixing column, 360. Active guide rod, 361. Second clutch moving slot, 362. Second transition notch, 370. Second torsion spring, 400. Limit opening, 401. Connection clamping groove, 410. Fixed rod, 411. Connection buckle, 412. Arc surface, 420. Outer ring gear, 421. First-stage planetary gear, 422. Second-stage planetary gear, 423. Gear clamping groove, 430. Fixed piece, 431. Mounting groove, 450. Limit clamping block, 460. Fixed ring, 461. Friction connecting piece, 462. Friction swinging piece. Detailed implementation mode

[0030] The following further describes the present utility model 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 of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0031] 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 otherwise clearly specified in the context, 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, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0033] 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. Without further statement, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of the present application.

[0034] Embodiment 1, as Figure 1-13 shown, inside the upper beam 1 of the curtain box, a rope winding head 2, a rope winder 3, and a slow descent device 4 are sequentially installed from right to left. Among them, the end of the rope winding head 2 is connected to a winding link 5. The winding link 5 is a rod with a rectangular cross-section. The winding link 5 passes through the rope winder 3 and is connected to the slow descent device 4.

[0035] Among them, the rope-making head 2 of this volume includes a main base 20, and the main base 20 is installed inside the upper beam of the curtain box. A reel clamping plate 21 is arranged on the main base 20, and the reel clamping plate 21 is detachably clamped with the main base 20. This connection method is convenient for assembly and installation. A rope-winding clutch assembly is installed inside the main base 20. The rope-winding clutch assembly includes a rope-winding clutch driving gear 22 and a rope-winding clutch driven gear 23, and the two are meshed and connected. One end of the rope-winding clutch driven gear 23 is connected with a connection terminal 24, and the connection terminal 24 is externally connected to the winding connection of the curtain box, that is, the connection terminal 24 plays a role of providing rotational power outward. A resistance rotor 25 is rotatably connected to the other end of the rope-winding clutch driven gear 23. Among them, the rope-winding clutch driving gear 22 is slidably sleeved on the resistance rotor 25, that is, the rope-winding clutch driving gear 22 can slide on the resistance rotor 25. The other end of the resistance rotor 25 is connected with a first planetary gear 26, the other end of the first planetary gear 26 is connected with a driving gear tail 27, and the driving gear tail 27 is connected with a pull bead wheel 28. At the same time, the pull bead wheel 28 is placed on the right side of the reel clamping plate 21, and the first planetary gear 26 is placed on the left side of the reel clamping plate 21. Among them, a pull bead rope is wound around the pull bead wheel 28. Pulling the pull bead 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 achieve transmission, and transmit the rotational power provided by the pull bead rope to the connection terminal 24 through the first planetary gear 26 and the rope-winding clutch assembly, and complete the rotational drive of the winding connecting rod of the curtain box. Furthermore, the retraction operation of the louver curtain is realized. This device uses the first planetary gear 26 structure and the rope-winding clutch assembly structure, which improves the transmission efficiency, makes the operation simple and convenient. At the same time, the structure is simple and convenient for assembly and installation.

[0036] Furthermore, the protective cover plate 210 arranged on the reel clamping plate 21 is annular, which plays a role in preventing the pull bead rope installed in the pull bead wheel 28 from moving out of the pull bead wheel 28. At the same time, the arranged pull bead rope baffle 212 and pull bead rope guide wheel 213 can play a guiding role in the pulling of the pull bead rope, ensuring that the pull bead wheel 28 can be driven to rotate by the pull bead rope. This structure is simple and convenient for assembly. At the same time, it can ensure good use effect. The arranged head notch 290 is aligned with the pull bead rope opening 211, which is convenient for the installation of the pull bead rope, making the installation and assembly simple, the operation convenient, and the use effect good. The arranged installation block 291 cooperates with the positioning protrusion 292 at the bottom of the reel clamping plate 21 to achieve clamping, ensuring convenient assembly and good use effect.

[0037] 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. A rope winding clutch driven gear 23 is mounted in the first mounting hole, and a first planetary gear 26 is mounted in the mounting cavity 201. Among them, a limit card 220 is provided on the left side of the rope winding clutch driven gear 23, and the limit card 220 contacts the first mounting hole, which can ensure the stable installation of the rope winding clutch driven gear 23. At the same time, a cylindrical hole 230 is provided on the right side of the rope winding clutch driven gear 23, and the cylindrical hole 230 is connected to the cylindrical structure at the end of the resistance rotor 25. Among them, a mounting card slot 202 is provided on the mounting cavity 201, and a mounting card strip 214 provided on the reel clamping plate 21 is embedded into 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 through the clamping connection between the main base 20 and the reel clamping plate 21. A limit block three 260 is provided on the end face of the planet carrier of the first planetary gear 26, and a limit block four 250 is connected to the end of the resistance rotor 25. Through the contact and clamping connection between the limit block three 260 and the limit block four 250, the rotation of the first planetary gear 26 can drive the resistance rotor 25 to rotate. A gear connection cylinder 221 is sleeved on the resistance rotor 25, and the gear connection cylinder 221 is connected with a clutch active block 222. The gear connection cylinder 221 can slide on the resistance rotor 25. Among them, when the limit block one 223 contacts the limit block two 224, the clutch active block 222 and the rope winding clutch active gear 22 can rotate synchronously. This kind of structure can realize the clutch action of the driving rope winding clutch assembly and ensure the normal clutch function. The fixed column one 203 installed inside the main base 20 is embedded into the clutch movable groove one 225 on the clutch active block 222. When the clutch movable block rotates, the fixed column one 203 can move along the clutch movable groove one 225, so that the clutch movable block realizes axial movement. When the fixed column one 203 is placed at the end of the clutch movable groove one 225, the set transition notch one 226 can make the fixed column one 203 continuously rotate around the clutch movable groove one 225 to ensure the continuous clutch state, that is, to ensure the normal clutch function of the rope winding clutch assembly. The setting of this kind of structure can make the rotation power of the pull bead wheel 28 be transmitted to the connection terminal 24 through the first planetary gear 26 and the rope winding clutch assembly.

[0038] Further, a sun gear connecting active gear tail 27 is provided on the first planetary gear 26, and the active gear tail 27 is connected to the pull bead wheel 28, so that when the pull bead wheel 28 rotates, it can drive the first planetary gear 26 to rotate, thereby realizing the normal transmission function of the first planetary gear 26 and ensuring the transmission effect of rotation. The friction columns 282 provided on the inner wall of the pull bead rope groove 281 on the pull bead wheel 28 can increase the friction force, improve the use effect, and at the same time, the structure is simple and convenient, which is convenient for assembly and installation.

[0039] Further, a tape winding base 31 is provided in the cord reel 3. A reel core is mounted on the tape winding base 31. A winding link 5 passing through the reel core is connected to the reel core. 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 further provided on the tape winding base 31. The tape support shell 32 is placed outside the reel core to ensure the guiding of the tape during winding. A cloth tape light-adjusting shell 33 is further provided outside the tape support shell 32. The cloth tape light-adjusting shell 33 is used to drive the cloth tape to move, thereby realizing the adjustment of the deflection angle of the louver curtain blades. At the same time, a winding protection block 34 is provided at the bottom of the tape winding base 31. The winding protection block 34 is elastically connected to the tape winding base 31. The winding protection block 34 contacts the tape. When a mis-touch occurs, the tape becomes slack. The winding protection block 34 moves under the action of elastic force and is clamped with the reel core, thereby stopping the reel core from winding the tape and realizing the stop of winding the curtain blades, playing a role in preventing mis-touch. Among them, a base accessory 35 is further provided on the side of the tape winding base 31. The base accessory 35 is provided with a tape support clutch assembly. The tape support clutch assembly is connected to the winding link 5. At the same time, the tape support clutch assembly is connected to the cloth tape light-adjusting shell 33. The clutch function of the tape support clutch assembly can realize the light-adjusting operation of adjusting the cloth tape light-adjusting shell 33. Among them, a base card slot 310 provided on the tape winding base 31 is connected to a tape support buckle 320 provided at the lower end of the tape support shell 32 to realize the installation of the tape support shell 32. This structure is simple and convenient to operate and convenient to install. A light-adjusting cloth tape hole 331 is provided on the tape winding base 31. The light-adjusting cloth tape hole 331 is used to guide the passage of the cloth tape and plays a guiding function for the cloth tape during light adjustment.

[0040] The tape support clutch driving gear 36 is meshed and connected with the tape support clutch driven gear 37. Among them, the tape support clutch driven gear 37 is rotatably connected to the side end of the tape winding base 31. The tape support clutch driving gear 36 is connected to a driving guide rod 360. Both ends of the driving guide rod 360 are cylindrical. One end of the driving guide rod 360 is rotatably connected to the middle of the tape support clutch driven gear 37, and the two ends are rotatably connected to the base accessory 35. The driving guide rod 360 is slidably sleeved on the winding link 5. The driving guide rod 360 can slide along the winding link 5. At the same time, a clutch moving slot two 361 is provided on the tape support clutch driving gear 36. At the same time, a fixing column two 350 is provided at the lower end of the base accessory 35. The fixing column two 350 is embedded in the clutch moving slot two 361. When the winding link 5 drives the tape support clutch driving gear 36 to rotate, it moves axially synchronously, realizing the meshing connection between the tape support clutch driving gear 36 and the tape support clutch driven gear 37. At the same time, a transition notch two 362 is provided at the end of the clutch moving slot two 361. As the winding link 5 rotates, when the fixing column two 350 moves to the end of the clutch moving slot two 361, it will move out from the transition notch two 362 and continue to rotate around the clutch moving slot two 361 to realize the maintenance of the clutch action. This structure is simple, making the assembly and installation operation convenient.

[0041] The torsion spring two 370 is sleeved on the belt support clutch driven gear 37. At the same time, a dimming shell connection block 330 is provided at the end of the cloth belt dimming shell 33, and the dimming shell connection block 330 is connected to the torsion spring two 370. Driven by the meshing connection of the belt support clutch driven gear 37 with the belt support clutch driving gear 36, the belt support clutch driven gear 37 rotates. Initially, the torsion spring two 370 is firmly connected to the belt support clutch driven gear 37. In this state, the cloth belt dimming shell 33 can be driven to rotate to complete the operation of adjusting the angle of the curtain blades. When it rotates to the end, the torsion spring two 370 is squeezed, making the connection between the torsion spring two 370 and the belt support clutch driven gear 37 loose. The cloth belt dimming shell 33 stops rotating. At this time, the cloth belt dimming shell 33 cannot adjust the angle of the curtain blades, while the retracting link 5 can continue to drive the core to complete the winding of the belt. This structure is simple, and the operations of adjusting the angle of the curtain blades and winding the curtain blades can be completed only by the rotation of the retracting link 5. The structure is simple, convenient for assembly, and has good use effects at the same time.

[0042] Among them, the core is composed of a core shaft 300 and a core block 301. The core shaft 300 is connected to the retracting link 5. By rotating the retracting link 5, the rotation of the core shaft 300 can be driven to complete the winding operation of the belt. At the same time, a core groove 302 is provided on the core block 301 for storing the belt. A belt insertion port 303 is provided at the lower end of the core groove 302. At the same time, a core side groove 304 is provided on the side wall of the core block 301. The belt insertion port 303 is communicated with the core side groove 304. The belt is inserted into the belt insertion port 303 and the belt is pressed by the core cover 305 to complete the installation of the belt. This structure is convenient for belt installation, making the operation simple and convenient, and has strong practicability.

[0043] A number of protective clamping blocks 306 are provided on the side wall of the core block 301. At the same time, a protective block assembly groove 311 is provided on the tape winding base 31. The protective block base 340 of the winding protective block 34 is installed in the protective block assembly groove 311. The protective block inclined block 341 corresponds to the protective clamping 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 achieve the elastic connection of the winding protective block 34. When the curtain blade is lowered and the tape is in a straight state, the winding protective block 34 compresses the elastic spring 312 so that the protective block inclined block 341 is disengaged from the protective clamping block 306, realizing the rapid lowering of the curtain blade. When the curtain blade is accidentally touched during lowering, the tape becomes bent and slack. Under the action of the elastic spring 312, the protective block inclined block 341 on the winding protective block 34 contacts the protective clamping block 306, completing the rotational locking of the core, realizing the anti-mis-touch operation. This structure is simple and convenient for assembly. At the same time, this structure can effectively achieve the anti-mis-touch effect. The provided spring positioning groove 342 is used to fix the elastic spring 312, which can ensure the stable action of the elastic spring 312. The spring clamping post 313 provided in the protective block assembly groove 311 and the spring clamping pin 343 provided in the spring positioning groove 342 jointly clamp the elastic spring 312 to achieve the elastic connection between the winding protective block 34 and the tape winding base 31, ensuring the realization of the anti-mis-touch function.

[0044] Among them, the tape winding base 31 is provided with a tape inlet 314, which is used for the entry of the tape. The tape inlet guide wheels 315 provided on both sides of the tape inlet 314 play a guiding role, facilitating the entry of the tape and ensuring the flatness of the tape. The tape pulling hole 345 provided on the tape pulling block 344 provided on the protective 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, causing the tape pulling hole 345 to be misaligned with the tape inlet 314, realizing the stop of the tape movement, and further realizing the anti-mis-touch effect and improving the use effect.

[0045] Furthermore, a housing 40 is provided in the descender 4. An outer cover plate 45 is provided at the right end of the housing 40, and a planetary gear set 42 is provided at the left end of the housing 40. At the same time, a rear cover plate 41 is provided on the left side of the planetary gear set 42.

[0046] Among them, four limiting ports 400 are provided on the housing 40. At the same time, four limiting clamping blocks 450 are provided on the outer cover plate 45. The limiting clamping blocks 450 are embedded into the limiting ports 400 to complete the clamping connection between the outer cover plate 45 and the housing 40. Among them, a through hole is provided on the outer cover plate 45, which is used for sleeving the square card 44.

[0047] Among them, the planetary gear set 42 includes an outer ring gear 420, a first-stage planetary gear 421 and a second-stage planetary gear 422. The central gear of the second-stage planetary gear 422 is inserted into the middle of the first-stage planetary gear 421 to complete the gear transmission connection between the two. The first-stage planetary gear 421 and the second-stage 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 first-stage planetary gear 421, and a connecting block 440 is provided at the inner end of the square card 44. The connecting block 440 is embedded in the gear slot 423. At the same time, a torsion spring one is connected between the connecting block 440 and the gear slot 423. A retracting link is connected to the outer end of the square card 44. The rotation of the retracting link can drive the rotation of the first-stage star gear, and then drive the rotation of the second-stage planetary gear 422. The central gear of the second-stage planetary gear 422 is connected to the friction disc 43, and the rotation of the friction disc 43 is driven through the transmission of the planetary gear. Four groups of parallel fixed pieces 430 are provided on the outer end face of the friction disc 43. An installation groove 431 is provided on the fixed piece 430. A convex ring is provided in the middle of the friction disc 43. The fixing ring 460 provided in the friction plate 46 is sleeved with the convex ring to realize the installation of the friction plate 46. A number of friction connecting pieces 461 are connected to the outer side wall of the fixing ring 460. The friction connecting piece 461 is embedded between the parallel fixed pieces 430. A friction swing piece 462 is connected to the outer end of the friction connecting piece 461. The friction swing piece 462 is triangular in shape. When the friction disc 43 rotates, due to the action of centrifugal force, the friction swing piece 462 can swing outwards, so that the friction swing piece 462 contacts the inner side wall of the rear cover plate 41, generating friction. As the rotation speed increases, the friction force also gradually increases, thereby reducing the rotation speed of the square card 44, that is, a slow-down operation can be realized when the curtain descends. 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 the rear cover plate 41 to generate friction, so it does not affect the rising of the curtain.

[0048] Four fixing rods 410 are provided at the end of the rear cover plate 41. The inner wall of the fixing rod 410 is an arc surface 412, and the arc surface 412 contacts the outer ring gear 420. At the same time, a connecting buckle 411 is provided at the end of the fixing rod 410, and the connecting buckle 411 is clamped with the connecting slot 401 provided on the housing 40 to complete the connection between the rear cover plate 41 and the housing 40, realizing the fixing of the planetary gear set 42. This connection structure is simple, and during the assembly operation, the operation is simple and convenient.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rolling-up mechanism for a louver curtain, characterized in that, It includes a curtain box upper beam (1). Inside the curtain box upper beam (1), a cord stop (2) for connecting a curtain pull bead, a cord winder (3) connected to the blades of a louver curtain, and a speed reducer (4) for slowing down the descent of the curtain blades are successively installed from right to left. The end of the cord stop (2) is connected to a winding link (5) with a rectangular cross-section, and the winding link (5) successively passes through the cord winder (3) and the speed reducer (4).

2. The winding mechanism of a louver curtain according to claim 1, characterized in that, The cord stop (2) includes a main base (20) installed on the curtain box upper beam (1). The main base (20) is detachably connected to a reel clamp (21). A cord clutch assembly is installed inside the main base (20). The cord clutch assembly includes a cord clutch driving gear (22) and a cord clutch driven gear (23). The cord clutch driving gear (22) and the cord clutch driven gear (23) are matingly connected. A connection terminal (24) connected to the winding link (5) is provided at the end of the cord clutch driven gear (23). A resistance rotor (25) is rotatably connected to the cord clutch driven gear (23). The cord clutch driving gear (22) is slidably sleeved on the resistance rotor (25). The other end of the resistance rotor (25) is connected to a first planetary gear (26). The first planetary gear (26) is connected to a driving gear tail (27). The driving gear tail (27) is connected to a pull bead wheel (28). The first planetary gear (26) and the pull bead wheel (28) are respectively located on the left and right sides of the reel clamp (21). A protective cover plate (210) is connected to the outer side wall of the reel clamp (21). The protective cover plate (210) is an annular plate. The pull bead wheel (28) is located inside the protective cover plate (210). The protective cover plate (210) is provided with a pull bead cord opening (211). A pull bead cord baffle (212) is provided above the pull bead cord opening (211). A pull bead cord guide wheel (213) is provided below the pull bead cord opening (211). A stop outer cover (29) is connected to the outside of the reel clamp (21). A stop notch (290) is provided on the side wall of the stop outer cover (29). The stop notch (290) is aligned with the pull bead cord opening (211). An installation block (291) is provided at the inner bottom of the stop outer cover (29). A positioning protrusion (292) is provided at the bottom of the reel clamp (21). The installation block (291) is connected to the positioning protrusion (292).

3. The retracting mechanism of a louver curtain according to claim 2, characterized in that, A first mounting hole (200) is provided at the left end of the main base (20), and a mounting cavity (201) is provided at the right end of the main base (20). The rope winding clutch driven 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 driven gear (23) is provided with a limit card (220), and the limit card (220) contacts the end face of the first mounting hole (200). The rope winding clutch driven gear (23) is provided with a cylindrical hole (230). The end of the resistance rotor (25) is cylindrical and is rotatably connected with the cylindrical hole (230). The mounting cavity (201) is provided with a mounting card slot (202). The rope winding clamp plate (21) is provided with a mounting card strip (214), and the mounting card strip (214) is clamped with the mounting card slot (202). A third limit block (260) is provided at the end face of the planet carrier of the first planetary gear (26). A fourth limit block (250) is connected to the end of the resistance rotor (25), and the third limit block (260) corresponds to the fourth limit block (250).

4. The retracting mechanism of a louver curtain according to claim 2, characterized in that, A gear connection cylinder (221) is provided at the end face of the rope winding clutch driving gear (22). A clutch driving block (222) is sleeved with the gear connection cylinder (221). A first limit block (223) is provided at the end face of the rope winding clutch driving gear (22). A second limit block (224) is provided at the end face of the clutch driving block (222), and the first limit block (223) corresponds to the second limit block (224). The inner wall section of the gear connection cylinder (221) and the middle section of the resistance rotor (25) are both rectangular, and the gear connection cylinder (221) is slidably sleeved with the middle part of the resistance rotor (25). A first fixing column (203) is provided at the inner bottom of the main base (20). The clutch driving block (222) is provided with a spiral clutch moving groove one (225), and a transition notch one (226) is provided at the end of the clutch moving groove one (225). The first fixing column (203) is placed in the clutch moving groove one (225).

5. The retracting mechanism of a louver curtain according to claim 2, characterized in that, The sun gear in the planetary gear (26) is connected to the tail of the driving gear (27). A gear tail card (270) is provided at the end of the tail of the driving gear (27). The gear tail card (270) is provided with a gear tail card slot (271). The pull bead wheel (28) is provided with a central groove (280), and the cross section of the central groove (280) is rectangular. The tail of the driving gear (27) passes through the rope winding clamp plate (21) and the gear tail card slot (271) is clamped with the central groove (280). The pull bead wheel (28) is provided with a pull bead rope groove (281), and a plurality of uniformly arranged friction columns (282) are provided on the inner side wall of the pull bead rope groove (281).

6. The retracting mechanism of a louver curtain according to claim 1, characterized in that, The described rope winder (3) is provided with a spool (30) for winding the winding belt. The spool (30) is connected to the winding link (5). Both ends of the spool (30) are connected with a belt base (31) for installing the spool (30). A belt support shell (32) is detachably connected to the belt base (31). The belt support shell (32) is placed outside the spool (30). A swingable cloth belt light-adjusting shell (33) is arranged outside the belt support shell (32). The belt base (31) is elastically connected with a winding protection block (34). The winding protection block (34) corresponds to the spool (30). The winding protection block (34) contacts the winding belt. A base accessory (35) is arranged on the side of the belt base (31). A belt support clutch assembly is arranged outside the spool (30), and the belt support clutch assembly is connected to the winding link (5). The belt support clutch assembly is placed inside the base accessory (35), and one end of the belt support clutch assembly is connected to the base accessory (35). The belt support clutch assembly is connected to the cloth belt light-adjusting shell (33). A base card slot (310) is arranged at the bottom of the belt base (31). A belt support buckle (320) is arranged at the lower end of the belt support shell (32). The belt support buckle (320) is clamped with the base card slot (310). A belt support notch (321) is arranged at the lower end of the belt support shell (32). The belt support notch (321) corresponds to the winding protection block (34).

7. The winding mechanism of a louver curtain according to claim 6, characterized in that, The belt support clutch assembly includes a belt support clutch driving gear (36) and a belt support clutch driven gear (37). The belt support clutch driving gear (36) is matched and connected with the belt support clutch driven gear (37). The belt support clutch driven gear (37) is rotatably connected to the belt base (31). The belt support clutch driving gear (36) is connected with a driving guide rod (360) with a rectangular cross-section. Both ends of the driving guide rod (360) are cylindrical. One end of the driving guide rod (360) is rotatably connected to the middle of the belt support clutch driven gear (37). The other end of the driving guide rod (360) is rotatably connected to the base accessory (35). The driving guide rod (360) is connected to the winding link (5). The belt support clutch driving gear (36) is provided with a spiral clutch moving slot two (361). A transition notch two (362) is arranged at the end of the clutch moving slot two (361). A fixing column two (350) is arranged at the lower end of the base accessory (35). The fixing column two (350) is embedded into the clutch moving slot two (361). A torsion spring two (370) is sleeved on the belt support clutch driven gear (37). A light-adjusting shell connecting block (330) is arranged at the end of the cloth belt light-adjusting shell (33). The torsion spring two (370) is connected to the light-adjusting shell connecting block (330). The cloth belt light-adjusting shell (33) is connected to the light-adjusting cloth belt of the curtain. The belt base (31) is provided with a light-adjusting cloth belt hole (331). The light-adjusting cloth belt passes through the light-adjusting cloth belt hole (331).

8. The retracting mechanism of a louver curtain according to claim 6, characterized in that, The core (30) includes a core shaft (300) and core blocks (301) mounted on the core shaft (300). A core groove (302) is provided in the middle of the core block (301). A tape inlet (303) for inserting a tape is provided at the lower end of the core groove (302). A core side groove (304) is provided on the side wall of the core block (301). The core side groove (304) communicates with the tape inlet (303). A core cover (305) is embedded in the core side groove (304). The core cover (305) is sleeved with the core shaft (300) and the core cover (305) presses the tape. A number of evenly distributed protection blocks (306) are provided on the side wall of the core block (301). A protection block assembly groove (311) is provided on the bottom surface of the tape base (31). The tape winding protection block (34) includes 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). An elastic spring (312) is connected in the protection block assembly groove (311). The elastic spring (312) is connected to the protection block base (340). The protection block inclined block (341) corresponds to the protection block (306). A spring positioning groove (342) is provided on the protection block base (340). The elastic spring (312) is placed in the spring positioning groove (342). A spring clamping post (313) is provided on the side wall of the protection block assembly groove (311). A spring clamping pin (343) is provided at the end of the spring positioning groove (342). The two ends of the elastic spring (312) are respectively clamped with the spring clamping post (313) and the spring clamping pin (343). An inlet (314) is provided at the bottom of the tape base (31). Tape guide wheels (315) are provided on both sides of the inlet (314). A tape pulling block (344) is connected to the side end of the protection block base (340). A tape pulling hole (345) is provided on the tape pulling block (344). The tape pulling hole (345) corresponds to the inlet (314) and the tape passes through the tape pulling hole (345) and the inlet (314).

9. The retracting mechanism of a louver curtain according to claim 1, characterized in that, The descender (4) includes a housing (40). An outer cover plate (45) is connected to the right end of the housing (40). A planetary gear set (42) is connected to the left end of the housing (40). A friction disc (43) is connected to the left side of the planetary gear set (42). A square card (44) connected to the retracting link (5) is connected to the right side of the planetary gear set (42). The square card (44) is sleeved with the outer cover plate (45). A rear cover plate (41) is arranged on the left side of the planetary gear set (42). The friction disc (43) is placed inside the rear cover plate (41). The friction disc (43) is elastically connected with a friction plate (46). The friction plate (46) contacts the inner side wall of the rear cover plate (41). The rear cover plate (41) is snap-connected with the housing (40). The planetary gear set (42) includes an outer ring gear (420), a first-stage planetary gear (421) and a second-stage planetary gear (422). The first-stage planetary gear (421) is connected to the second-stage planetary gear (422). Both the first-stage planetary gear (421) and the second-stage planetary gear (422) are placed inside the outer ring gear (420). A gear slot (423) is arranged at the outer end of the first-stage planetary gear (421). The square card (44) is provided with a connecting block (440). The connecting block (440) is embedded into the gear slot (423), and the connecting block (440) and the gear slot (423) are connected by a first torsion spring. The second-stage planetary gear (422) is connected to the friction disc (43). A plurality of groups of parallel fixed pieces (430) are arranged on the outer end face of the friction disc (43). The fixed pieces (430) are provided with installation slots (431). The friction plate (46) includes a fixed ring (460). The fixed ring (460) is connected to the friction disc (43). The fixed ring (460) is connected with a plurality of friction connecting pieces (461). The friction connecting pieces (461) are placed between the fixed pieces (430). The end of the friction connecting piece (461) is connected with a friction swing piece (462). The friction swing piece (462) is placed inside the installation slot (431). The housing (40) is provided with a limiting port (400). The outer cover plate (45) is provided with a limiting block (450). The limiting block (450) is connected with the limiting port (400).

10. A rolling-up mechanism for a louver curtain according to claim 9, characterized in that, The outer cover plate (45) is provided with a fixed rod (410). A connecting buckle (411) is arranged at the end of the fixed rod (410). A connecting slot (401) is arranged on the housing (40). The connecting buckle (411) is snap-connected with the connecting slot (401). An arc surface (412) is arranged on the inner side wall of the fixed rod (410). The arc surface (412) contacts the outer side wall of the planetary gear set (42).

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