Rope winder structure for venetian blind

Abstract

The utility model discloses a rope winder structure for a venetian blind, which comprises a winding connecting rod with a rectangular section, the winding connecting rod is connected with a winding core used for winding a winding tape, two ends of the winding core are connected with a winding tape base used for installing the winding core, the winding tape base is detachably connected with a tape supporting shell, and the tape supporting shell is arranged on the outer side of the winding core. A swingable cloth tape dimming shell is arranged on the outer side of the tape supporting shell, the tape winding base is elastically connected with a winding protection block, the winding protection block corresponds to the winding core and makes contact with the winding tape, a base accessory is arranged on the side of the tape winding base, and a tape supporting clutch assembly is arranged on the outer side of the winding core and connected with a winding connecting rod. The supporting belt clutch assembly is arranged in the base accessory, and one end of the supporting belt clutch assembly is connected with the base accessory. The beneficial effects of the utility model are that the arranged furling protection block is matched with the protection clamping block, so that the effect of preventing mistaken touch is effectively achieved, the protection effect is achieved, and the use effect is improved; the device is simple in structure and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field related to blinds, in particular to a rope winding device structure for blinds. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the personalized doors and windows. At the same time, the requirements for the performance and aesthetics of the sunshade products of 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 parallel "blades", which 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.

[0003] Among them, a rope winder is provided in the curtain box of the blinds. The existing rope winder only has a single function of winding the rope and lacks a protective function during the winding process. When the blinds are used, due to the effect of gravity, the speed gradually increases with the distance below, which may cause injuries when the lower end of the curtain piece is accidentally touched. Utility Model Content

[0004] The utility model aims to overcome the deficiency of the prior art that the blinds lack the anti-accidental-touch function and provides a blinds rope reel structure with the anti-accidental-touch function and improved use effect of the rope reel.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rope winding device structure for a blind curtain, comprising a winding connecting rod with a rectangular cross-section, the winding connecting rod is connected to a winding core for winding a winding tape, and both ends of the winding core are connected to a winding base for installing the winding core, and the winding base is detachably connected to a supporting belt shell, and the supporting belt shell is placed on the outer side of the winding core, and a swingable cloth tape dimming shell is arranged on the outer side of the supporting belt shell, and the winding base is elastically connected to a winding protection block, and the winding protection block corresponds to the winding core, and the winding protection block contacts the winding tape, and a base accessory is arranged on the side of the winding base, and a supporting belt clutch assembly is arranged on the outer side of the winding core and the supporting belt clutch assembly is connected to the winding connecting rod, and the supporting belt clutch assembly is placed inside the base accessory and one end of the supporting belt clutch assembly is connected to the base accessory.

[0006] The rope reel is provided with a tape base, on which a reel core is installed, and the reel core is connected to a reel connecting rod that penetrates 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 is also provided on the tape base, and the tape support shell 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 is also provided on the outside of the tape support shell, and the cloth tape dimming shell is used to drive the cloth tape to move, thereby adjusting the deflection angle of the blinds. At the same time, a reel protection block is provided at the bottom of the tape base, and the reel protection block is elastically connected to the tape base. The reel protection block contacts the tape, and when an accidental touch occurs, the tape becomes a relaxed state, and the reel protection block moves under the action of elastic force, and is clamped with the reel core, so that the reel core stops winding the tape, and the curtain blades stop reeling, which plays a protective role in preventing accidental touch. Among them, a base accessory is also provided on the side of the tape winding base, and the base accessory is installed with a support belt clutch assembly, and the support belt clutch assembly is connected to the winding connecting rod. At the same time, the support belt clutch assembly is connected to the cloth tape dimming shell. The clutch function of the support belt clutch assembly can realize the dimming operation of adjusting the cloth tape dimming shell.

[0007] 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, both 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 accessory, the active guide rod is connected with the winding connecting rod, the support belt clutch active gear is provided with two spiral clutch active grooves, the end of the two clutch active grooves is provided with two transition notches, and the lower end of the base accessory is provided with two fixing columns, and the two fixing columns are embedded in the two clutch active grooves. The supporting belt clutch driving gear is matched and meshed with the supporting belt clutch driven gear, wherein the supporting belt clutch driven gear is rotatably connected with the side end of the winding belt base, the supporting belt clutch driving gear is connected with an active guide rod, both ends of the active guide rod are cylindrical, one end of the active guide rod is rotatably connected with the middle part of the supporting belt clutch driven gear, and both ends are rotatably connected with the base attachment, the active guide rod is slidably sleeved with the winding connecting rod, and the active guide rod can slide along the winding connecting rod. At the same time, a clutch active groove 2 is arranged on the supporting belt clutch driving gear, and at the same time, at the lower end of the base attachment A second fixing column is provided at the end, and the second fixing column is embedded in the second clutch movable groove. When the winding connecting rod drives the support belt clutch active gear to rotate, it moves synchronously along the axial direction to realize the meshing connection between the support belt clutch active gear and the support belt clutch passive gear. At the same time, a second transition notch is provided at the end of the second clutch movable groove. As the winding connecting rod rotates, the second fixing column moves to the end of the second clutch movable groove and moves out of the second transition notch, and continues to rotate around the second clutch movable groove to realize the maintenance of the clutch action. The structure is simple, and the assembly operation is convenient.

[0008] Preferably, the support belt clutch passive gear is sleeved with a second torsion spring, a dimming shell connecting block is provided at the end of the cloth belt dimming shell, the second torsion spring is connected to the dimming shell connecting block, and the cloth belt dimming shell is connected to the dimming cloth belt of the curtain. The second torsion spring is sleeved on the support belt clutch passive gear. At the same time, a dimming shell connecting block is provided at the end of the cloth belt dimming shell. The dimming shell connecting block is connected to the second torsion spring. When the support belt clutch passive gear is driven by the meshing connection of the support belt clutch active gear, the support belt clutch passive gear rotates. Initially, the second torsion spring is tightly connected to the support belt clutch passive gear. In this state, the cloth belt dimming shell can be driven to rotate to complete the operation of adjusting the angle of the curtain blades. When it rotates to the end, the second torsion spring is squeezed, so that the torsion spring and the support belt clutch passive gear become loose, and the cloth belt dimming shell stops rotating. At this time, the cloth belt dimming shell cannot adjust the angle of the curtain blades, and the winding connecting rod 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 connecting rod. It has a simple structure, is easy to assemble, and has a good use effect.

[0009] Preferably, the bottom of the tape reel base is provided with a base slot, the lower end of the tape support shell is provided with a tape support buckle, the tape support buckle is engaged with the base slot, the lower end of the tape support shell is provided with a tape support notch, the tape support notch corresponds to the reeling protection block. The base slot provided on the tape reel base is connected with the tape support buckle provided on the lower end of the tape support shell to realize the installation of the tape support shell. This structure is simple and convenient to operate and easy to install.

[0010] Preferably, the core includes a core shaft and a core block installed on the core shaft, a core groove is provided in the middle of the core block, a tape opening 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 block, the core side groove is communicated with the tape opening, a core cover is embedded and installed in the core side groove, the core cover is sleeved on the core shaft and the core cover presses the tape. The winding core is composed of a winding core shaft and a winding core block. The winding core shaft is connected to the winding connecting rod. The rotation of the winding connecting rod can drive the rotation of the winding core shaft to complete the winding operation of the tape. At the same time, a winding core groove is provided on the winding core block. The winding core groove is used to store the tape. A tape opening is provided at the lower end of the winding core groove. At the same time, a winding core side groove is provided on the side wall of the winding core block. The tape opening is connected to the winding core side groove. The tape is inserted into the tape opening and pressed by the winding core cover 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.

[0011] Preferably, the side wall of the winding core block is provided with a plurality of evenly distributed protection card blocks, the bottom surface of the winding base is provided with a protection block assembly groove, 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, the protection block base is embedded in the protection block assembly groove, the protection block assembly groove is connected with an elastic spring, the elastic spring is connected to the protection block base, and the protection block oblique block corresponds to the protection card block. A plurality of protection blocks are arranged on the side wall of the winding core block, and at the same time, a protection block assembly groove is arranged on the winding belt base. The protection block base of the winding protection block is installed in the protection block assembly groove, and the protection block oblique block corresponds to the protection card block. At the same time, the protection block base is installed in the protection block assembly groove through an elastic spring to realize the elastic connection of the winding protection block. When the curtain blades are lowered, the winding belt is in a straight state, and the winding protection block compresses the elastic spring to make the protection block oblique block separate from the protection card block, so that the curtain blades are quickly lowered. When the curtain blades are lowered and an accidental touch occurs, the winding belt becomes a bent and relaxed state. Under the action of the elastic spring, the protection block oblique block on the winding protection block contacts the protection card block, 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.

[0012] Preferably, the protection block base is provided with a spring positioning groove, and the elastic spring is placed in the spring positioning groove. The provided spring positioning groove is used to fix the elastic spring, which can ensure the stabilizing effect of the elastic spring.

[0013] Preferably, a spring clamping column 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, and the two ends of the elastic spring are respectively clamped with the spring clamping column and the spring clamping pin. The spring clamping column provided in the protection block assembly groove and the spring clamping pin provided in the spring positioning groove jointly clamp the elastic spring, thereby realizing the elastic connection between the winding protection block and the winding tape base, and ensuring the function of preventing accidental touch.

[0014] Preferably, the bottom of the tape reel base is provided with a tape inlet, and tape inlet guide wheels are provided on both sides of the tape inlet. The side end of the protective block base is connected to a tape pull block, and the tape pull block is provided with a tape pull hole, and the tape pull hole corresponds to the tape inlet, and the tape passes through the tape pull hole and the tape inlet. The tape reel base is provided with a tape inlet, which is used for the entry of the tape. The tape inlet guide wheels provided on both sides of the tape inlet play a guiding role, which facilitates the entry of the tape and ensures the flatness of the tape. The tape pull hole provided on the tape pull block provided on the protective block base is used for the tape to pass through. Under the action of the elastic spring, the tape pull block pulls the tape, so that the tape pull hole and the tape inlet are misaligned, so that the tape stops moving, thereby achieving the effect of preventing accidental touch and improving the use effect.

[0015] Preferably, the tape base is provided with a dimming tape hole, and the dimming tape passes through the dimming tape hole. The dimming tape hole is used to guide the passage of the tape, and plays a guiding function for the tape during dimming.

[0016] The beneficial effects of the utility model are as follows: the arranged winding protection block 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 convenient for assembly and assembly; the arranged support belt clutch component can control the rotation of the cloth belt dimming shell to realize the angle adjustment of the curtain blades, so that the cloth belt dimming shell can be synchronously controlled through the rotation of the winding connecting rod to adjust the rotation of the curtain blades and the winding core to rewind the curtain belt, which makes the operation simple and convenient, and the use function has good effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 This is a three-dimensional view of the connection of the central support with the clutch assembly of the utility model;

[0020] Figure 4This is a view of the connection between the winding protection block and the winding belt base in the utility model.

[0021] In the accompanying drawings,

[0022] 5. Winding connecting rod, 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, 300. Winding core shaft, 301. Winding core block, 302. Winding core groove, 303. Winding mouth, 304. Winding core side groove, 305. Winding core cover, 306. Protection block, 310. Base slot, 311. Protection block assembly slot, 312. Elastic spring, 313. 3. Spring clamp column, 314. Belt inlet, 315. Belt inlet guide wheel, 320. Belt support buckle, 321. Belt support notch, 330. Dimming shell connecting block, 331. Dimming cloth belt hole, 340. Protection block base, 341. Protection block oblique block, 342. Spring positioning groove, 343. Spring clamp, 344. Belt pulling block, 345. Belt pulling hole, 350. Fixed column II, 360. Active guide rod, 361. Clutch movable groove II, 362. Transition notch II, 370. Torsion spring II. DETAILED DESCRIPTION

[0023] The utility model 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 of 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] Embodiment 1, as Figure 1-4 As shown, a rope winding device structure for a venetian blind comprises a winding connecting rod 5 with a rectangular cross-section, the winding connecting rod 5 is connected to a winding core 30 for winding a tape, both ends of the winding core 30 are connected to a tape winding base 31 for installing the winding core 30, a tape support shell 32 is detachably connected to the tape winding base 31, the tape support shell 32 is placed on the outside of the winding core 30, a swingable cloth tape dimming shell 33 is arranged on the outside of the tape support shell 32, the tape winding base 31 is elastically connected to a winding protection block 34, the winding protection block 34 corresponds to the winding core 30, the winding protection block 34 is in contact with the winding tape, a base accessory 35 is arranged on the side of the tape winding base 31, a tape support clutch assembly is arranged on the outside of the winding core 30 and the tape support clutch assembly is connected to the winding connecting rod 5, the tape support clutch assembly is placed inside the base accessory 35 and one end of the tape support clutch assembly is connected to the base accessory 35.

[0028] The support belt clutch assembly includes a support belt clutch active gear 36 and a support belt clutch passive gear 37, the support belt clutch active 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 active gear 36 is connected with an active guide rod 360 with a rectangular cross-section, both 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, the support belt clutch active gear 36 is provided with a spiral clutch active groove 2 361, the end of the clutch active groove 2 361 is provided with a transition notch 2 362, and the lower end of the base attachment 35 is provided with a fixed column 2 350, and the fixed column 2 350 is embedded in the clutch active groove 2 361.

[0029] The support belt clutch driven gear 37 is sleeved with a second torsion spring 370, and 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, and the cloth belt dimming shell 33 is connected to the dimming cloth belt of the curtain.

[0030] A base slot 310 is provided at the bottom of the tape winding base 31 , a tape buckle 320 is provided at the lower end of the tape supporting shell 32 , the tape buckle 320 is engaged with the base slot 310 , a tape notch 321 is provided at the lower end of the tape supporting shell 32 , and the tape notch 321 corresponds to the winding protection block 34 .

[0031] The core 30 includes a core shaft 300 and a core block 301 installed on the core shaft 300, a core groove 302 is provided in the middle of the core block 301, a tape opening 303 for inserting the 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 is connected with the tape opening 303, a core cover 305 is embedded and installed in the core side groove 304, the core cover 305 is sleeved on the core shaft 300 and the core cover 305 presses the tape.

[0032] A number of evenly distributed protection blocks 306 are arranged on the side wall of the winding core block 301, a protection block assembly groove 311 is arranged on the bottom surface of the winding base 31, the winding protection block 34 comprises a protection block base 340 and a protection block bevel block 341, the protection block bevel 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 bevel block 341 corresponds to the protection block 306.

[0033] The protection block base 340 is provided with a spring positioning groove 342 , and the elastic spring 312 is placed in the spring positioning groove 342 .

[0034] A spring clamping column 313 is disposed on the side wall of the protection block assembly groove 311 , a spring clamping pin 343 is disposed at the end of the spring positioning groove 342 , and both ends of the elastic spring 312 are respectively clamped with the spring clamping column 313 and the spring clamping pin 343 .

[0035] A tape inlet 314 is provided at the bottom of the tape base 31, and tape feed guide wheels 315 are provided on both sides of the tape inlet 314. A tape pulling block 344 is connected to the side end of the protection block base 340, and the tape pulling block 344 is provided with a tape pulling hole 345. The tape pulling hole 345 corresponds to the tape inlet 314 and the tape passes through the tape pulling hole 345 and the tape inlet 314.

[0036] The tape base 31 is provided with a dimming tape hole 331 , and the dimming tape passes through the dimming tape hole 331 .

[0037] The working principle of the utility model is as follows: Figure 1-4 As shown, the rope reel is provided with a tape base 31, on which a winding core is installed, and the winding core is connected to a winding connecting rod 5 that passes through the winding core, and the winding core is used to fix the end of the tape and wind the tape around the winding core when the winding core rotates. A detachable tape support shell 32 is also provided on the tape base 31, and the tape support shell 32 is placed on the outside of the winding 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 winding protection block 34 is provided at the bottom of the tape base 31, and the winding 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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 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 cord winder structure for a Venetian blind, comprising a winding rod (5) having a rectangular cross section, characterized in that: The winding connecting rod (5) is connected to a winding core (30) for winding a winding tape, and both ends of the winding core (30) are connected to a winding base (31) for mounting the winding core (30). The winding base (31) is detachably connected to a tape support shell (32), and the tape support shell (32) is placed on the outside of the winding core (30). A swingable cloth tape dimming shell (33) is arranged on the outside of the tape support shell (32). The winding base (31) is elastically connected to a winding protection block (34). A reeling protection block (34) corresponds to the reel core (30), the reeling protection block (34) contacts the reel, a base attachment (35) is provided on the side of the reel base (31), a belt support clutch assembly is provided on the outside of the reel core (30), and the belt support clutch assembly is connected to the reeling connecting rod (5), the belt support clutch assembly is placed inside the base attachment (35), and one end of the belt support clutch assembly is connected to the base attachment (35), and the belt support clutch assembly is connected to the cloth belt dimming shell (33).

2. A cord reel structure for a Venetian blind according to claim 1, characterized in that: The support belt clutch assembly comprises a support belt clutch driving gear (36) and a support belt clutch passive gear (37), wherein the support belt clutch driving gear (36) is matched and connected with the support belt clutch passive gear (37), and the support belt clutch passive gear (37) is rotationally connected with the belt winding base (31), and the support belt clutch driving gear (36) is connected with an active guide rod (360) having a rectangular cross section, and both ends of the active guide rod (360) are cylindrical, and one end of the active guide rod (360) is connected to the support belt clutch passive gear (37). ) is rotatably connected to the middle part, the other end of the active guide rod (360) is rotatably connected to the base attachment (35), the active guide rod (360) is connected to the winding connecting rod (5), the support belt clutch active gear (36) is provided with a spiral clutch movable groove 2 (361), the end of the clutch movable groove 2 (361) is provided with a transition notch 2 (362), and the lower end of the base attachment (35) is provided with a fixed column 2 (350), and the fixed column 2 (350) is embedded in the clutch movable groove 2 (361).

3. The cord reel structure for a Venetian blind according to claim 2, characterized in that: 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); the second torsion spring (370) is connected to the dimming shell connecting block (330); and the cloth belt dimming shell (33) is connected to the dimming cloth belt of the curtain.

4. The cord reel structure for a Venetian blind according to claim 1, characterized in that: The bottom of the belt reel base (31) is provided with a base slot (310), the lower end of the belt support shell (32) is provided with a belt support buckle (320), the belt support buckle (320) is engaged with the base slot (310), and the lower end of the belt support shell (32) is provided with a belt support notch (321), the belt support notch (321) corresponds to the reeling protection block (34).

5. The cord winder structure for a Venetian blind according to claim 1, 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 sleeved with the winding core shaft (300) and the winding core cover (305) presses the winding tape.

6. The cord reel structure for a Venetian blind according to claim 5, characterized in that: The side wall of the winding core block (301) is provided with a plurality of evenly distributed protection clamping blocks (306); the bottom surface of the winding 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); 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); and the protection block inclined block (341) corresponds to the protection clamping block (306).

7. The cord reel structure for a Venetian blind according to claim 6, characterized in that: The protection block base (340) is provided with a spring positioning groove (342), and the elastic spring (312) is placed in the spring positioning groove (342).

8. The cord reel structure for a Venetian blind according to claim 7, characterized in that: A spring clamping column (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), and both ends of the elastic spring (312) are respectively clamped with the spring clamping column (313) and the spring clamping pin (343).

9. The cord winder structure for a Venetian blind according to claim 6, characterized in that: The bottom of the tape base (31) is provided with a tape inlet (314), and tape inlet guide wheels (315) are provided on both sides of the tape inlet (314). The side end of the protection block base (340) is connected to a tape pull block (344), and the tape pull block (344) is provided with a tape pull hole (345), and 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).

10. The cord winder structure for a Venetian blind according to claim 3, characterized in that: The tape roll base (31) is provided with a dimming tape hole (331), and the dimming tape passes through the dimming tape hole (331).

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