Roll rope head for venetian blind

Abstract

The invention discloses a winding rope head for a venetian blind, which comprises a main base connected with an upper beam of a curtain box, the main base is detachably connected with a winding wheel clamping plate, a winding rope clutch assembly is mounted in the main base, and the winding rope clutch assembly comprises a winding rope clutch driving gear and a winding rope clutch driven gear; the rope winding clutch driving gear and the rope winding clutch driven gear are connected in a matched mode, a connecting terminal connected with the winding connecting rod is arranged at the end of the rope winding clutch driven gear, the rope winding clutch driven gear is rotationally connected with a resistance rotor, the rope winding clutch driving gear is slidably connected with the resistance rotor in a sleeved mode, and 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 bead pulling wheel, the first planetary gear and the bead pulling wheel are arranged on the left side and the right side of a rolling wheel clamping plate respectively, and a head manufacturing outer sleeve is connected to the outer side of the rolling wheel clamping plate. The invention has the beneficial effects of convenience in assembly, good assembly operation effect and good use effect.

Description

Technical Field

[0001] The invention relates to the technical field related to blinds, in particular to a winding rope head for blinds. Background Art

[0002] The blinds are composed of the upper beam of the curtain box, the winding rope control head, the rope winder and the curtain blades. The blinds winding rope control head is used to control the opening and closing of the blinds. It is usually made of plastic or metal and is designed to be used with the draw cord of the curtain. By pulling the rope, the winding rope control head is driven to rotate, and the rope winder is driven to wind the rope, thus controlling the raising and lowering of the curtain.

[0003] The existing winding rope control head has various functions, but its structure is complicated and inconvenient to assemble. At the same time, the driving effect of the winding rope control head is poor, which has a certain impact on the use of the blinds. Summary of the invention

[0004] The invention aims to overcome the shortcomings of the prior art, such as inconvenient assembly and poor use effect, and provides a winding rope head for a blind curtain, which is convenient to assemble, has good assembly operation effect and good use effect.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a rope winding head for venetian blinds, comprising a main base connected to the upper beam of the curtain box, the main base is detachably connected with a roller clamping plate, a rope winding clutch assembly is installed in the main base, the rope winding clutch assembly comprises a rope winding clutch driving gear and a rope winding clutch passive gear, the rope winding clutch driving gear and the rope winding clutch passive gear are matched and connected, the end of the rope winding clutch passive gear is provided with a connecting terminal connected to a winding connecting rod, the rope winding clutch passive gear is rotatably connected with a resistance rotor, the rope winding clutch driving gear is slidably sleeved with the resistance rotor, the other end of the resistance rotor is connected with a first planetary gear, the first planetary gear is connected with a driving gear tail, the driving gear tail is connected with a bead wheel, the first planetary gear and the bead wheel are respectively arranged on the left and right sides of the roller clamping plate, and the outer side of the roller clamping plate is connected with a head control sleeve.

[0006] The present rope winding head includes a main base, which is installed inside the upper beam of the curtain box. A reel clamp is arranged on the main base, and the reel clamp is detachably connected to the main base. This connection method is convenient for assembly and installation. A rope winding clutch assembly is installed inside the main base, and the rope winding clutch assembly includes a rope winding clutch driving gear and a rope winding clutch passive gear, and the two are matched and meshed. The end of the rope winding clutch passive gear is connected to a connecting terminal, and the connecting terminal is connected to the reeling connection of the curtain box, that is, the connecting terminal plays a connecting role of providing rotational power to the outside. The resistance rotor is rotatably connected to the other end of the rope winding clutch passive gear, wherein the rope winding clutch driving gear is slidably sleeved with the resistance rotor, that is, the rope winding clutch driving gear can slide on the resistance rotor. The other end of the resistance rotor is connected to the first planetary gear, and the other end of the first planetary gear is connected to the driving gear tail, and the driving gear tail is connected to the bead wheel. At the same time, the bead pulley is placed on the right side of the reel splint, and the first planetary gear is placed on the left side of the reel splint. The bead pulley is wound with a bead pull rope. Pulling the bead pull rope can drive the rotation of the driving gear tail, and then drive the first planetary gear to rotate, so as to drive the reel clutch assembly to realize transmission, and transmit the rotation power provided by the bead pull rope to the connecting terminal through the first planetary gear and the reel clutch assembly, so as to complete the rotation drive of the reeling connecting rod of the curtain box. Then the reeling operation of the blinds is realized. This device uses the first planetary gear structure and the reel clutch assembly structure, which improves the transmission efficiency and makes the operation simple and convenient. At the same time, the structure is simple and easy to assemble and install.

[0007] Preferably, a first mounting hole is provided at the left end of the main base, and a mounting cavity is provided at the right end of the main base. The rope winding clutch passive gear is socketed with the first mounting hole, and the first planetary gear is placed in the mounting cavity. The rope winding clutch passive gear is provided with a limit card, and the limit card contacts the end face of the first mounting hole. The rope winding clutch passive gear is provided with a cylindrical hole, and the end of the resistance rotor is cylindrical and rotatably connected to the cylindrical hole. The first mounting hole and the mounting cavity provided on the main base are used to install the rope winding clutch passive gear and the first planetary gear. The limit card provided on the rope winding clutch passive gear contacts the outer end face of the first mounting hole to ensure the limited installation of the rope winding clutch passive gear. At the same time, the cylindrical hole provided on the inner side surface of the rope winding clutch passive gear is connected to the cylindrical structure of the resistance rotor to determine the installation position of the rope winding clutch passive gear. This structural design is convenient for assembly and installation, so that the use effect is good.

[0008] Preferably, the end face of the rope winding clutch driving gear is provided with a gear connecting cylinder, and the gear connecting cylinder is sleeved with a clutch driving block, the end face of the rope winding clutch driving gear is provided with a limiting block 1, and the end face of the clutch driving block is provided with a limiting block 2, and the limiting block 1 corresponds to the limiting block 2. The inner wall section of the gear connecting cylinder and the middle section of the resistance rotor are both rectangular, and the gear connecting cylinder is slidably sleeved with the middle of the resistance rotor. The end face of the rope winding clutch driving gear is connected with a gear connecting cylinder, and the clutch driving block is sleeved on the gear connecting cylinder. The gear connecting cylinder is sleeved with the resistance rotor, and the gear connecting cylinder can slide on the resistance rotor, wherein, when the limiting block 1 contacts the limiting block 2, the clutch driving block and the rope winding clutch driving gear can rotate synchronously, and this structure can realize the clutch action of driving the rope winding clutch assembly and ensure the normal clutch function.

[0009] Preferably, a fixed column 1 is provided at the bottom of the main base, a spiral clutch active groove 1 is provided on the clutch active block, a transition notch 1 is provided at the end of the clutch active groove 1, and the fixed column 1 is placed in the clutch active groove 1. The fixed column 1 installed inside the main base is embedded in the clutch active groove 1 on the clutch active block. When the clutch active block rotates, the fixed column 1 can move along the clutch active groove 1, so that the clutch active block can achieve axial movement. When the fixed column 1 is placed at the end of the clutch active groove 1, the transition notch 1 can make the fixed column 1 rotate around the clutch active groove 1 all the time, ensuring that the clutch state is always in progress, which can ensure that the clutch function of the rope winding clutch assembly is normal.

[0010] Preferably, the installation cavity is provided with an installation slot, the reel clamp is provided with an installation strip, the installation strip is clamped with the installation slot, the planetary frame end face of the first planetary gear is provided with a limit block 3, the end of the resistance rotor is connected with a limit block 4, and the limit block 3 corresponds to the limit block 4. The installation strip is embedded in the installation slot to complete the clamping installation of the main base and the reel clamp, and the set limit block 3 cooperates with the limit block 4 to enable the first planetary gear and the resistance rotor to achieve synchronous rotation, play a role in rotation transmission, and ensure the normal function of providing rotational power. This structure is simple, making assembly and installation simple and convenient.

[0011] Preferably, the sun gear in the first planetary gear is connected to the driving gear tail, the end of the driving gear tail is provided with a gear tail card, the gear tail card is provided with a gear tail slot, the bead wheel is provided with a center slot, the cross section of the center slot is rectangular, the driving gear tail passes through the winding wheel clamp, and the gear tail slot is engaged with the center slot. The sun gear set in the first planetary gear is connected to the driving gear tail, and the driving gear tail is connected to the bead wheel, so that the bead wheel can drive the first planetary gear to rotate when it rotates, thereby realizing the normal transmission function of the first planetary gear and ensuring the transmission effect of the rotation.

[0012] Preferably, the outer wall of the reel clamp is connected with a protective cover plate, which is an annular plate, the bead pull wheel is placed in the protective cover plate, the protective cover plate is provided with a bead pull rope opening, a bead pull rope baffle is provided above the bead pull rope opening, and a bead pull rope guide wheel is provided below the bead pull rope opening. The protective cover plate provided on the reel clamp is annular, which prevents the bead pull rope installed in the bead pull wheel from moving out of the bead pull wheel. At the same time, the bead pull rope baffle and the bead pull rope guide wheel can guide the pulling of the bead pull rope, ensuring that the bead pull wheel can be driven to rotate by the bead pull rope. The structure is simple and easy to assemble, and at the same time, it can ensure good use effect.

[0013] Preferably, the bead pull wheel is provided with a bead pull rope groove, and the inner side wall of the bead pull rope groove is provided with a plurality of evenly arranged friction columns. The friction columns provided on the inner wall of the bead pull rope groove provided on the bead pull wheel can increase the friction force and improve the use effect. At the same time, the structure is simple and convenient, and it is easy to assemble and install.

[0014] Preferably, the side wall of the head casing is provided with a head notch, and the head notch is aligned with the bead rope opening. The head notch is aligned with the bead rope opening, which facilitates the installation of the bead rope, making the installation and assembly simple, the operation convenient, and the use effect good.

[0015] Preferably, the inner bottom of the head jacket is provided with a mounting block, the bottom of the reel clamp is provided with a positioning protrusion, and the mounting block is connected with the positioning protrusion. The mounting block cooperates with the positioning protrusion at the bottom of the reel clamp to achieve a clamping connection, ensuring convenient assembly and good use effect.

[0016] The beneficial effects of the present invention are: the first planetary gear and the rope winding clutch assembly can provide a rotational transmission effect, which can improve the rotational transmission ratio and achieve good use effect; the rope winding head has a simple structure, which makes assembly simple and convenient; the bead pulling wheel can improve the use effect of the rope winding head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic view of the present invention; Figure 2 The explosion-proof Figure 1 ; Figure 3 The explosion-proof Figure 2 ; Figure 4 yes Figure 2 Enlarged view at A in the middle; Figure 5 It is a three-dimensional view of the reel clamp in the present invention.

[0018] In the accompanying drawings, 20. Main base, 21. Reel clamp, 22. Rope clutch active gear, 23. Rope clutch passive gear, 24. Connecting terminal, 25. Resistance rotor, 26. First planetary gear, 27. Driving gear tail, 28. Bead pulley, 29. Head jacket, 200. First mounting hole, 201. Mounting cavity, 202. Mounting slot, 203. Fixed column 1, 210. Protective cover, 211. Bead pulley opening, 212. Bead pulley baffle, 213. Bead pulley guide wheel, 214. Mounting card strip, 220. Limit card, 221. Gear connecting cylinder, 222. Clutch active block, 223. Limit block 1, 224. Limit block 2, 225. Clutch movable slot 1, 226. Transition notch 1, 230. Column hole, 250. Limit block four, 260. Limit block three, 270. Gear tail card, 271. Gear tail card slot, 280. Center slot, 281. Bead rope slot, 282. Friction column, 290. Head notch, 291. Installation card block, 292. Positioning protrusion. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Embodiment 1, as Figure 1-5 As shown, a cord-winding head for a blind curtain comprises a main base 20 connected to an upper beam of a curtain box, the main base 20 is detachably connected to a reel clamping plate 21, a cord-winding clutch assembly is installed in the main base 20, the cord-winding clutch assembly comprises a cord-winding clutch driving gear 22 and a cord-winding clutch passive gear 23, the cord-winding clutch driving gear 22 and the cord-winding clutch passive gear 23 are matched and connected, a connecting terminal 24 connected to a winding connecting rod is arranged at the end of the cord-winding clutch passive gear 23, the cord-winding clutch passive gear 23 is rotatably connected to a resistance rotor 25, the cord-winding clutch driving gear 22 is slidably sleeved with 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 bead wheel 28, the first planetary gear 26 and the bead wheel 28 are respectively arranged on the left and right sides of the reel clamping plate 21, and a head-winding jacket 29 is connected to the outer side of the reel clamping plate 21.

[0024] 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 passive gear 23 is sleeved with the first mounting hole 200, and the first planetary gear 26 is placed in the mounting cavity 201. The rope winding clutch passive gear 23 is provided with a limit card 220, and the limit card 220 contacts the end surface of the first mounting hole 200. The rope winding clutch passive gear 23 is provided with a cylindrical hole 230, and the end of the resistance rotor 25 is cylindrical and is rotatably connected to the cylindrical hole 230.

[0025] A gear connecting cylinder 221 is provided on the end face of the rope winding clutch driving gear 22, and a clutch driving block 222 is sleeved on the gear connecting cylinder 221. A limiting block 1 223 is provided on the end face of the rope winding clutch driving gear 22, and a limiting block 224 is provided on the end face of the clutch driving block 222. The limiting block 1 223 corresponds to the limiting block 2 224. The inner wall section of the gear connecting cylinder 221 and the middle section of the resistance rotor 25 are both rectangular, and the gear connecting cylinder 221 is slidably sleeved on the middle part of the resistance rotor 25.

[0026] A fixing column 203 is provided at the bottom of the main base 20 , and the clutch active block 222 is provided with a spiral clutch movable groove 225 , and a transition notch 226 is provided at the end of the clutch movable groove 225 , and the fixing column 203 is placed in the clutch movable groove 225 .

[0027] The mounting cavity 201 is provided with a mounting slot 202, and the winding wheel clamp 21 is provided with a mounting strip 214, and the mounting strip 214 is engaged with the mounting slot 202. The planetary carrier end face of the first planetary gear 26 is provided with a limiting block three 260, and the end of the resistance rotor 25 is connected to the limiting block four 250, and the limiting block three 260 corresponds to the limiting block four 250.

[0028] The sun gear in the first planetary gear 26 is connected to the driving gear tail 27. A gear tail card 270 is provided at the end of the driving gear tail 27. The gear tail card 270 is provided with a gear tail slot 271. The bead wheel 28 is provided with a center slot 280. The cross-section of the center slot 280 is rectangular. The driving gear tail 27 passes through the winding wheel clamp 21 and the gear tail slot 271 is engaged with the center slot 280.

[0029] The outer wall of the reel clamp 21 is connected with a protective cover 210 which is an annular plate. The bead wheel 28 is placed in the protective cover 210. The protective cover 210 is provided with a bead rope opening 211. A bead rope baffle 212 is provided above the bead rope opening 211. A bead rope guide wheel 213 is provided below the bead rope opening 211.

[0030] The bead pulling wheel 28 is provided with a bead pulling rope groove 281 , and the inner side wall of the bead pulling rope groove 281 is provided with a plurality of evenly arranged friction columns 282 .

[0031] A head-making notch 290 is provided on the side wall of the head-making outer sleeve 29 , and the head-making notch 290 is aligned with the bead-pulling rope opening 211 .

[0032] The inner bottom of the head sleeve 29 is provided with a mounting block 291 , and the bottom of the reel clamp 21 is provided with a positioning protrusion 292 , and the mounting block 291 is connected to the positioning protrusion 292 .

[0033] The working principle of the present invention is: Figure 1-5 As shown, the rope winding head includes a main base 20, which is installed inside the upper beam of the curtain box. A reel clamp 21 is provided on the main base 20, and the reel clamp 21 is detachably connected to 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, and the rope winding clutch assembly includes a rope winding clutch active gear 22 and a rope winding clutch passive gear 23, and the two are matched and meshed. The end of the rope winding clutch passive gear 23 is connected to a connecting terminal 24, and the connecting terminal 24 is connected to the reeling connection of the curtain box, that is, the connecting terminal 24 plays a connecting role of providing rotational power to the outside. The resistance rotor 25 is rotatably connected to the other end of the rope winding clutch passive gear 23, wherein the rope winding clutch active gear 22 is slidably sleeved with the resistance rotor 25, that is, the rope winding clutch active gear 22 can slide on the resistance rotor 25. The other end of the resistance rotor 25 is connected to the first planetary gear 26, and the other end of the first planetary gear 26 is connected to the driving gear tail 27, and the driving gear tail 27 is connected to the bead puller 28. At the same time, the bead puller 28 is placed on the right side of the winding wheel clamp 21, and the first planetary gear 26 is placed on the left side of the winding wheel clamp 21, wherein a bead puller rope is wound around the bead puller 28, and pulling the bead puller rope can drive the rotation of the driving gear tail 27, and then drive the first planetary gear 26 to rotate, so as to drive the rope winding clutch assembly to realize transmission, and transmit the rotational power provided by the bead puller rope to the connecting terminal 24 through the first planetary gear 26 and the rope winding clutch assembly, so as to complete the rotational drive of the winding connecting rod of the curtain box. Then the winding operation of the blinds is realized. This device uses the first planetary gear 26 structure and the rope winding clutch assembly structure, which improves the transmission efficiency and makes the operation simple and convenient. At the same time, the structure is simple and convenient for assembly and installation.

[0034] Furthermore, the protective cover plate 210 provided on the reel clamp plate 21 is annular, which prevents the bead rope installed in the bead wheel 28 from moving out of the bead wheel 28. At the same time, the bead rope baffle plate 212 and the bead rope guide wheel 213 provided can guide the pulling of the bead rope, ensuring that the bead wheel 28 can be driven to rotate by the bead rope. The structure is simple and easy to assemble, and at the same time, it can ensure good use effect. The head notch 290 provided is aligned with the bead rope opening 211, which is convenient for the installation of the bead rope, making the installation and assembly simple, the operation convenient, and the use effect good. The installation block 291 provided cooperates with the positioning protrusion 292 at the bottom of the reel clamp plate 21 to achieve a snap connection, ensuring easy assembly and good use effect.

[0035] Further, a first mounting hole is provided on the left side of the main base 20, and a mounting cavity 201 is provided on the right side. The rope winding clutch passive gear 23 is installed in the first mounting hole, and the first planetary gear 26 is installed in the mounting cavity 201. A limit card 220 is provided on the left side of the rope winding clutch passive gear 23, and the limit card 220 contacts the first mounting hole to ensure that the rope winding clutch passive gear 23 is installed stably. At the same time, a cylindrical hole 230 is provided on the right side of the rope winding clutch passive gear 23, and the cylindrical hole 230 is connected to the cylindrical structure at the end of the resistance rotor 25. A mounting card slot 202 is provided on the mounting cavity 201, and the mounting card strip 214 provided on the reel clamping plate 21 is embedded in the mounting card slot 202 to complete the clamping connection between the main base 20 and the reel clamping plate 21. At the same time, the first planetary gear 26 is placed on the left side of the reel clamping plate 21, and the first planetary gear 26 is fixed by the clamping connection between the main base 20 and the reel clamping plate 21. A limit block 3 is provided on the planet carrier end face of the first planetary gear 26, and a limit block 4 250 is connected to the end of the resistance rotor 25. The first planetary gear 26 can be rotated to drive the resistance rotor 25 to rotate by the contact and engagement between the limit block 3 260 and the limit block 4 250. A gear connecting cylinder 221 is sleeved on the resistance rotor 25, and the gear connecting cylinder 221 is connected with a clutch active block 222. The gear connecting cylinder 221 can slide on the resistance rotor 25, wherein the limit block 1 223 contacts the limit block 224, so that the clutch active block 222 and the rope winding clutch active gear 22 can rotate synchronously. This structure can realize the clutch action of the driving rope winding clutch assembly and ensure the normal clutch function. The fixed column 203 installed inside the main base 20 is embedded in the clutch active groove 225 on the clutch active block 222. When the clutch active block rotates, the fixed column 203 can move along the clutch active groove 225, so that the clutch active block can achieve axial movement. When the fixed column 203 is placed at the end of the clutch active groove 225, the transition notch 226 can make the fixed column 203 rotate around the clutch active groove 225 all the time, ensuring that the clutch state is always carried out, which can ensure that the clutch function of the rope winding clutch assembly is normal. This structural setting can make the rotational power of the bead wheel 28 transmitted to the connecting terminal 24 through the first planetary gear 26 and the rope winding clutch assembly.

[0036] Furthermore, the sun gear disposed on the first planetary gear 26 is connected to the driving gear tail 27, and the driving gear tail 27 is connected to the bead wheel 28, so that the bead wheel 28 can drive the first planetary gear 26 to rotate when rotating, thereby realizing the normal transmission function of the first planetary gear 26 and ensuring the transmission effect of the rotation. The friction column 282 disposed on the inner wall of the bead rope groove 281 disposed on the bead wheel 28 can increase the friction force and improve the use effect. At the same time, the structure is simple and convenient, and it is easy to assemble and install.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cord-winding head for a Venetian blind, characterized in that: The invention comprises a main base (20) connected to the upper beam of the curtain box, the main base (20) being detachably connected to a reel clamp (21), a rope reel clutch assembly being installed in the main base (20), the rope reel clutch assembly comprising a rope reel clutch driving gear (22) and a rope reel clutch passive gear (23), the rope reel clutch driving gear (22) and the rope reel clutch passive gear (23) being matched and connected, the end of the rope reel clutch passive gear (23) being provided with a connection terminal (24) connected to a reeling connecting rod, the rope reel clutch passive gear (23) being connected to the reeling connecting rod, and the rope reel clutch passive gear (23) being connected to the reeling connecting rod. ) is rotatably connected to a resistance rotor (25), the rope winding clutch driving gear (22) is slidably sleeved with 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 bead wheel (28), the first planetary gear (26) and the bead wheel (28) are respectively arranged on the left and right sides of the winding wheel clamp (21), and the outer side of the winding wheel clamp (21) is connected to a head jacket (29).

2. The cord winding head for blinds according to claim 1, characterized in that: The left end of the main base (20) is provided with a first mounting hole (200), the right end of the main base (20) is provided with a mounting cavity (201), the rope winding clutch passive gear (23) is sleeved with the first mounting hole (200), the first planetary gear (26) is placed in the mounting cavity (201), the rope winding clutch passive gear (23) is provided with a limit card (220), the limit card (220) is in contact with the end surface of the first mounting hole (200), the rope winding clutch passive gear (23) is provided with a columnar hole (230), and the end of the resistance rotor (25) is cylindrical and rotatably connected to the columnar hole (230).

3. The cord winding head for blinds according to claim 1, characterized in that: The end surface of the rope-winding clutch driving gear (22) is provided with a gear connecting cylinder (221), the gear connecting cylinder (221) is sleeved with a clutch driving block (222), the end surface of the rope-winding clutch driving gear (22) is provided with a first limiting block (223), the end surface of the clutch driving block (222) is provided with a second limiting block (224), the first limiting block (223) corresponds to the second limiting block (224), the inner wall section of the gear connecting cylinder (221) and the middle section of the resistance rotor (25) are both rectangular, and the gear connecting cylinder (221) is slidably sleeved with the middle of the resistance rotor (25).

4. The cord winding head for blinds according to claim 3, characterized in that: The main base (20) is provided with a fixing column (203) at the bottom thereof, the clutch active block (222) is provided with a spiral clutch movable groove (225), a transition notch (226) is provided at the end of the clutch movable groove (225), and the fixing column (203) is placed in the clutch movable groove (225).

5. The cord winding head for blinds according to claim 2, characterized in that: The mounting cavity (201) is provided with a mounting slot (202), the reel clamp (21) is provided with a mounting strip (214), the mounting strip (214) is engaged with the mounting slot (202), a limiting block three (260) is provided on the end face of the planetary carrier of the first planetary gear (26), the end of the resistance rotor (25) is connected to a limiting block four (250), and the limiting block three (260) corresponds to the limiting block four (250).

6. The cord winding head for blinds according to claim 1, characterized in that: The sun gear in the first planetary gear (26) is connected to the driving gear tail (27); a gear tail card (270) is provided at the end of the driving gear tail (27); the gear tail card (270) is provided with a gear tail card slot (271); the bead wheel (28) is provided with a central groove (280); the central groove (280) has a rectangular cross section; the driving gear tail (27) passes through the winding wheel clamp (21); and the gear tail card slot (271) is card-engaged with the central groove (280).

7. The cord-winding head for a Venetian blind according to claim 1, characterized in that: The outer side wall of the reel clamp (21) is connected to a protective cover plate (210), the protective cover plate (210) is an annular plate, the bead pulling wheel (28) is placed inside the protective cover plate (210), the protective cover plate (210) is provided with a bead pulling rope opening (211), a bead pulling rope baffle plate (212) is provided above the bead pulling rope opening (211), and a bead pulling rope guide wheel (213) is provided below the bead pulling rope opening (211).

8. The cord winding head for a Venetian blind according to claim 1, characterized in that: The bead pulling wheel (28) is provided with a bead pulling rope groove (281), and the inner side wall of the bead pulling rope groove (281) is provided with a plurality of evenly arranged friction columns (282).

9. The cord winding head for a Venetian blind according to claim 7, characterized in that: A head-making notch (290) is provided on the side wall of the head-making outer sleeve (29), and the head-making notch (290) is aligned with the bead-pulling rope opening (211).

10. The cord winding head for a Venetian blind according to claim 1, characterized in that: The inner bottom of the head jacket (29) is provided with a mounting block (291), the bottom of the reel clamp (21) is provided with a positioning protrusion (292), and the mounting block (291) is connected to the positioning protrusion (292).

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