Corner structure of shutter

Abstract

The utility model relates to the technical field of shutters, in particular to a corner structure of a shutter, which comprises a corner mounting seat, a traction mechanism and a turnover mechanism, and the corner mounting seat is provided with a first mounting cavity and a second mounting cavity; the traction mechanism comprises a traction rope reversing wheel; the traction rope reversing wheel is rotatably mounted in the first mounting cavity; the turnover mechanism comprises a turnover wheel, a turnover transmission part, a stirring assembly, an elastic reset part and a rotation stopping structure. A plurality of convex teeth which are uniformly distributed along the circumference of the overturning wheel are arranged on the overturning wheel, and a containing space is formed between any two adjacent convex teeth; the shifting assembly comprises a shifting piece and a hinge shaft. The elastic reset piece is used for resetting the shifting piece so that part of the shifting piece can stretch into the containing space between the two adjacent protruding teeth all the time. Effective transmission between the turnover transmission seat and the turnover wheel is ensured, and smooth turnover operation is realized; and meanwhile, the smooth lifting operation is realized only by overcoming the small friction force for driving the shifting piece to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of blinds, in particular to a corner structure of a blind. Background Art

[0002] A built-in blind for insulating glass refers to a window belonging to the category of sunshade insulating glass products, which is composed of two pieces of glass (inner glass and outer glass, also called front glass and rear glass) arranged face to face and with their four peripheral edge parts sealed, and a louver curtain that can be lifted or lowered as required is arranged inside. There are two control modes for the built-in blind of insulating glass: one is single controller control; the other is dual controller control. Single controller control means that the cooperation of an external controller and an internal controller realizes the flipping of the louver blades of the louver curtain and the lifting and lowering of the louver curtain. Dual controller control means that two internal controllers and two external controllers respectively control the flipping of the louver blades of the louver curtain and the lifting and lowering of the louver curtain.

[0003] In the related art, the application number CN202020992647.8 discloses a venetian blind control device and a built-in blind for insulating glass. It includes a connecting seat integral plug angle, a flip transmission member rotatably arranged thereon, a flip limiter driven by the flip transmission member, and a flip limiter connecting member driven by the flip limiter, and a lifting rope pulley installed therein. The utility model centrally arranges the driving device of the flip axis in the entire venetian blind in the integral plug angle of the connecting seat above the window body, and drives the flip limiter connecting member to rotate the flip axis of the venetian blind according to the traction of the flip traction rope through the flip limiter. As a result, the utility model can ensure the synchronization of the rotation of the flip axis, avoid the relative rotation of the two ends of the flip axis of the venetian blind, and can also accurately limit the rotation angle range of the flip axis, thereby fixing the flip angle range of the curtain piece, thereby reducing the failure rate of the built-in blind for insulating glass and ensuring the smooth operation of its transmission mechanism. However, the above structure still has the following problems: the flip limiter can be configured to include a limiter body and a stopper installed on the limiter body: the limiter body is fixed on the outer periphery of the flip transmission member, and the stopper includes a first stopper and a second stopper respectively distributed along the circumference of the limiter body. The limiter body can be specifically configured to be a metal strip wound around the middle of the flip transmission member, with its two ends fixed to the flip transmission member and configured to protrude radially outward, and the two stoppers can respectively abut on the two sides of the limiter block to limit the rotation angle of the flip transmission member. Since the limit member body is configured as a metal strip wrapped around the middle of the flip transmission member, there is a disadvantage of being difficult to disassemble and assemble. In addition, when the stop strip of the metal strip is supported by the limit stop block, due to the large contact area between the flip transmission member and the metal strip, when the inner and outer operators are used to lift the blinds, the flip transmission member needs to overcome a large friction force to be able to rotate relative to the metal strip. This also increases the magnetic attraction force required by the inner and outer operators, requiring greater force to smoothly complete the lifting and lowering operations. At the same time, it also results in the need to set more magnetic blocks for the inner and outer operators, increasing production costs. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the utility model is to provide a corner structure of a blind, which enables the flip transmission seat to automatically rebound during the rotation process through the cooperation of the toggle assembly and the elastic reset member, ensures good contact between the flip wheel and the paddle, ensures effective transmission between the flip transmission seat and the flip wheel, and realizes a smooth flipping operation; in addition, since the contact area between the convex teeth of the flip wheel and the paddle is small, the friction force generated is also relatively small. When the flip transmission seat is limited by the anti-rotation structure, the flip wheel can still continue to rotate, and only needs to overcome the small friction force that drives the paddle to rotate, thereby realizing a smooth lifting operation.

[0005] The first aspect of the utility model provides a corner structure of a shutter, comprising a corner mounting seat, a traction mechanism and a flip mechanism, wherein the corner mounting seat is provided with a first mounting cavity and a second mounting cavity; the traction mechanism comprises a traction rope reversing wheel, and the traction rope reversing wheel is rotatably mounted in the first mounting cavity;

[0006] The flipping mechanism comprises a flipping wheel, a flipping transmission member, a toggle assembly, an elastic reset member and a rotation-stopping structure;

[0007] The flip transmission member comprises a flip transmission seat rotatably mounted in the second mounting cavity, one end of the flip transmission seat is provided with a flip shaft connecting pipe, and the other end thereof is provided with a flip synchronization shaft; a mounting hole is provided on the flip transmission seat;

[0008] The flip wheel is mounted on the flip synchronization shaft, and a plurality of convex teeth evenly distributed along the circumference of the flip wheel are arranged on the side surface of the flip wheel, and a receiving space is formed between any two adjacent convex teeth;

[0009] The paddle assembly comprises a paddle and a hinge shaft, the paddle is rotatably mounted in the mounting hole via the hinge shaft, and a portion of the paddle extends into the accommodation space between two adjacent convex teeth;

[0010] The elastic reset member is mounted on the flip transmission seat, and the elastic reset member is used to reset the paddle so that a portion of the paddle always extends into the accommodation space between two adjacent convex teeth;

[0011] The anti-rotation structure is located in the second installation cavity, and the anti-rotation structure is used to limit the rotation range of the flip transmission seat.

[0012] In the first aspect of the utility model, as a preferred embodiment, a mounting groove is provided on the side of the flip transmission seat located on the side of the flip synchronization shaft;

[0013] The elastic reset member is a U-shaped elastic member, which is installed in the installation groove; the U-shaped elastic member includes a first elastic arm and a second elastic arm, and the paddle is located between the first elastic arm and the second elastic arm; when the paddle rotates to contact the first elastic arm, it is reset by the first elastic arm, and when the paddle rotates in the opposite direction to contact the second elastic arm, it is reset by the second elastic arm.

[0014] In the first aspect of the utility model, as a preferred embodiment, the mounting hole is a square through hole that penetrates the flip transmission seat along the circumferential direction, and the shape of the paddle is a triangular structure, which includes two long hypotenuses and one short hypotenuse, and the corner portion between the two long hypotenuses extends into the accommodating space between two adjacent convex teeth.

[0015] In the first aspect of the present utility model, as a preferred embodiment, it further includes a bearing installed on the turning shaft connecting pipe. The inner ring of the bearing is in close fit with the turning shaft connecting pipe, and its outer ring is in contact with the inner wall of the second installation cavity.

[0016] In the first aspect of the present utility model, as a preferred embodiment, the number of the convex teeth is four to eight.

[0017] In the first aspect of the present utility model, as a preferred embodiment, the number of the convex teeth is six.

[0018] In the first aspect of the present utility model, as a preferred embodiment, the anti-rotation structure includes an anti-rotation convex block provided on the turning transmission seat, and a first stop portion and a second stop portion. The first stop portion and the second stop portion are symmetrically arranged along the vertical direction in the second installation cavity, and the first stop portion and the second stop portion are respectively located at the front side and the rear side of the turning transmission seat; when the turning transmission seat drives the anti-rotation convex block to rotate, when the anti-rotation convex block rotates to contact the first stop portion, it is limited by the first stop portion, and when the anti-rotation convex block rotates to contact the second stop portion, it is limited by the second stop portion.

[0019] In the first aspect of the present utility model, as a preferred embodiment,

[0020] The corner mounting seat is further provided with a longitudinal connection channel and a transverse connection channel respectively communicating with the second installation cavity; the longitudinal connection channel has an inlet for the turning rope to pass through, and the transverse connection channel has an insertion port for the turning shaft to pass through;

[0021] The corner mounting seat is further provided with a longitudinal rope inlet channel and a transverse rope outlet channel respectively communicating with the first installation cavity; the longitudinal rope inlet channel has a rope inlet for the traction rope to pass through, and the transverse rope outlet channel has a rope outlet for the traction rope to pass through.

[0022] In the first aspect of the present utility model, as a preferred embodiment, the corner mounting seat includes an upper mounting seat and a lower mounting seat, and the upper mounting seat and the lower mounting seat are connected in a detachable manner; the first installation cavity is formed on the lower mounting seat, and the second installation cavity is formed by enclosing between the upper mounting seat and the lower mounting seat.

[0023] In the first aspect of the present utility model, as a preferred embodiment, the upper mounting seat and the lower mounting seat are connected in a snap connection manner; a positioning hole is provided on the top surface of the lower mounting seat, and a positioning post is provided at the position corresponding to the positioning hole on the upper mounting seat, and the positioning post is used to insert into or disengage from the positioning hole.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. According to the corner structure of the shutter of the utility model, during the actual working process, in the initial state, the paddle partially extends into the accommodating space between two adjacent convex teeth on the flip wheel under the action of the elastic reset member. When the flip wheel rotates in one direction driven by the flip rope, the convex teeth thereon will contact the paddle. The driving force of the convex teeth causes the paddle to start rotating, thereby driving the flip transmission seat (if not restricted by the anti-rotation structure) or only the paddle itself to rotate (if restricted by the anti-rotation structure). After the convex teeth are separated from the paddle, the paddle begins to reset under the action of the elastic reset member. As the flip wheel rotates continuously, the paddle will continuously contact, rotate, separate and reset with the convex teeth. This process realizes the continuous transmission and reset of the flip transmission seat (before being restricted by the anti-rotation structure) or the paddle itself (after being restricted by the anti-rotation structure). In this way, this embodiment, through the cooperation of the toggle assembly and the elastic return member, enables the flip transmission seat to automatically rebound during the rotation process, thereby ensuring good contact between the flip wheel and the paddle, ensuring effective transmission between the flip transmission seat and the flip wheel, and realizing smooth flipping operation; in addition, since the contact area between the convex teeth of the flip wheel and the paddle is small, the friction force generated is also relatively small. When the flip transmission seat is limited by the anti-rotation structure, the flip wheel can still continue to rotate, and only needs to overcome the smaller friction force that drives the paddle to rotate, thereby realizing smooth lifting and lowering operations.

[0026] 2. The utility model uses the design of the U-shaped elastic member to enable the paddle to be effectively reset when rotating in both directions. This improves the stability and reliability of the flip mechanism. The contact area between the paddle and the U-shaped elastic arm is relatively small, so the friction generated is also small, which helps to further reduce wear and extend the service life of the flip mechanism. Since the paddle can be quickly reset and ready to contact the next convex tooth, the transmission efficiency of the flip mechanism is improved, which makes the raising and lowering operation of the blinds smoother and more efficient.

[0027] 3. The utility model uses the triangular structure and long hypotenuse design of the paddle to enable the paddle to effectively contact the convex teeth on the flip wheel and transmit power, thereby achieving stable rotation control of the flip transmission seat.

[0028] 4. The utility model reduces the friction between the flip transmission seat and the inner wall of the second mounting cavity during the rotation process through the design of the bearing. This not only improves the rotation efficiency, but also prolongs the service life of the flip transmission seat and the bearing. The bearing provides a stable support and rotation axis for the flip transmission seat. This ensures the stability and reliability of the blinds during the flipping process and avoids failures caused by poor rotation or jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1It is a structural schematic diagram of the corner structure of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a corner structure of another angle of the utility model;

[0031] Figure 3 It is a cross-sectional view of the corner structure of the utility model;

[0032] Figure 4 This is a schematic structural diagram of the corner structure of the utility model after the upper mounting seat is omitted;

[0033] Figure 5 It is a structural schematic diagram of the turning mechanism of the utility model;

[0034] Figure 6 It is a structural schematic diagram of the flip transmission member, the toggle assembly, and the elastic reset member of the utility model;

[0035] Figure 7 It is a structural schematic diagram of the flip transmission member, the toggle assembly, and the elastic reset member of the utility model from another angle;

[0036] Figure 8 It is a structural schematic diagram of the flip wheel of the utility model;

[0037] Figure 9 It is a structural schematic diagram of the lower mounting seat of the utility model;

[0038] Figure 10 It is a structural schematic diagram of the upper mounting seat of the utility model.

[0039] In the figure: 10, corner mounting seat; 101, upper mounting seat; 1011, positioning column; 102, lower mounting seat; 1021, positioning hole; 11, first mounting cavity; 111, longitudinal rope inlet channel; 1111, rope inlet; 112, transverse rope outlet channel; 1121, rope outlet; 12, second mounting cavity; 121, longitudinal connecting channel; 1211, inlet; 122, transverse connecting channel; 1221, plug interface; 20, traction mechanism; 21, traction rope reversing wheel; 30, flip mechanism; 31, flip wheel; 311, convex teeth; 3 12. Accommodating space; 32. Flip transmission member; 321. Flip transmission seat; 3211. Mounting hole; 322. Flip shaft connecting tube; 323. Flip synchronization shaft; 3211. Mounting hole; 3212. Mounting groove; 33. Toggle assembly; 331. Paddle; 332. Articulated shaft; 34. Elastic reset member; 341. First elastic arm; 342. Second elastic arm; 35. Anti-rotation structure; 351. Anti-rotation protrusion; 352. First stop portion; 353. Second stop portion; 36. Bearing; 200. Flip rope; 300. Traction rope. DETAILED DESCRIPTION

[0040] Next, in combination with the accompanying drawings and specific embodiments, the utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application.

[0041] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely defined.

[0042] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "connected", "communicated", "connected" should be understood in a broad sense. For example, it can be a fixed connection, or can be connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0043] The terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0044] Embodiment:

[0045] Please refer to Figure 1-10 As shown, this embodiment provides a corner structure of a shutter, including a corner mounting seat 10, a traction mechanism 20 and a flipping mechanism 30;

[0046] Specifically, a first installation cavity 11 and a second installation cavity 12 are provided on the corner mounting seat 10;

[0047] Specifically, the traction mechanism 20 includes a traction rope reversing wheel 21, and the traction rope reversing wheel 21 is rotatably installed in the first installation cavity 11;

[0048] Specifically, the flip mechanism 30 includes a flip wheel 31, a flip transmission member 32, a toggle assembly 33, an elastic reset member 34 and a rotation-stopping structure 35;

[0049] The flip transmission member 32 includes a flip transmission seat 321 rotatably mounted in the second mounting cavity 12, a flip shaft connecting tube 322 is disposed at one end of the flip transmission seat 321, and a flip synchronization shaft 323 is disposed at the other end thereof; a mounting hole 3211 is disposed on the flip transmission seat 321;

[0050] The flip wheel 31 is mounted on the flip synchronization shaft 323. A plurality of convex teeth 311 evenly distributed along the circumference of the flip wheel 31 are arranged on the side surface of the flip wheel 31. An accommodating space 312 is formed between any two adjacent convex teeth 311.

[0051] The paddle assembly 33 includes a paddle 331 and a hinge shaft 332. The paddle 331 is rotatably mounted in the mounting hole 3211 via the hinge shaft 332. A portion of the paddle 331 extends into the accommodation space 312 between two adjacent protruding teeth 311.

[0052] The elastic reset member 34 is mounted on the flip transmission seat 321, and the elastic reset member 34 is used to reset the paddle 331 so that a portion of the paddle 331 always extends into the accommodation space 312 between two adjacent protruding teeth 311;

[0053] The anti-rotation structure 35 is located in the second installation cavity 12 , and is used to limit the rotation range of the flip transmission seat 321 .

[0054] According to the corner structure of the shutter of the utility model, in the actual working process, in the initial state, the paddle 331 partially extends into the accommodation space 312 between two adjacent protruding teeth 311 on the flip wheel 31 under the action of the elastic reset member 34. When the flip wheel 31 rotates in one direction driven by the flip rope 200, the protruding teeth 311 thereon will contact the paddle 331. The driving force of the protruding teeth 311 causes the paddle 331 to start rotating, thereby driving the flip transmission seat 321 (if not restricted by the anti-rotation structure 35) or only the paddle 331 itself to rotate (if restricted by the anti-rotation structure 35). After the protruding teeth 311 separate from the paddle 331, the paddle 331 starts to reset under the action of the elastic reset member 34. As the flip wheel 31 rotates continuously, the paddle 331 will continuously contact the protruding teeth 311, rotate, separate and reset. This process realizes the continuous transmission and reset of the flip transmission seat 321 (before being restricted by the anti-rotation structure 35) or the paddle 331 itself (after being restricted by the anti-rotation structure 35). In this way, the present embodiment, through the cooperation of the toggle assembly 33 and the elastic reset member 34, enables the flip transmission seat 321 to automatically rebound during the rotation process, thereby ensuring good contact between the flip wheel 31 and the paddle 331, ensuring effective transmission between the flip transmission seat 321 and the flip wheel 31, and realizing smooth flipping operation; in addition, since the contact area between the convex teeth 311 of the flip wheel 31 and the paddle 331 is small, the friction force generated is also relatively small. When the flip transmission seat 321 is limited by the anti-rotation structure 35, the flip wheel 31 can still continue to rotate, and only needs to overcome the small friction force that drives the paddle 331 to rotate, thereby realizing smooth lifting and lowering operation.

[0055] In a preferred embodiment of the present utility model, a mounting groove 3212 is provided on the side of the flip transmission seat 321 located on one side of the flip synchronization shaft 323;

[0056] The elastic reset member 34 is a U-shaped elastic member, which is installed in the installation groove 3212; the U-shaped elastic member includes a first elastic arm 341 and a second elastic arm 342, and the paddle 331 is located between the first elastic arm 341 and the second elastic arm 342; when the paddle 331 rotates to contact with the first elastic arm 341, it is reset by the first elastic arm 341, and when the paddle 331 rotates in the opposite direction to contact with the second elastic arm 342, it is reset by the second elastic arm 342.

[0057] Based on the above structure, in the initial state, the paddle 331 is located between the first elastic arm 341 and the second elastic arm 342 of the U-shaped elastic member, in a relatively balanced position. The elastic force of the U-shaped elastic member keeps the paddle 331 in this position, ready to contact the convex tooth 311 of the flipping wheel 31. When the flipping wheel 31 rotates driven by the flipping rope, the convex tooth 311 thereon will contact the paddle 331. The driving force of the convex tooth 311 causes the paddle 331 to start rotating, thereby driving the flipping transmission seat 321 (if not restricted by the anti-rotation structure 35) or only the paddle 331 itself to rotate (if restricted by the anti-rotation structure 35). After the convex tooth 311 separates from the paddle 331, the paddle 331 starts to reset under the action of the U-shaped elastic member. If the paddle 331 rotates in one direction before, then it will contact the first elastic arm 341 and rebound to the initial position under the elastic force of the first elastic arm 341. If the paddle 331 rotates in the opposite direction, then it will contact the second elastic arm 342 and rebound to the initial position under the elastic force of the second elastic arm 342. With the continuous rotation of the flipping wheel 31, the paddle 331 will continuously contact, rotate, separate and reset with the convex tooth 311. This process realizes the continuous transmission and reset of the flipping transmission seat 321 (before being restricted by the anti-rotation structure 35) or the paddle 331 itself (after being restricted by the anti-rotation structure 35). Thus, in this embodiment, through the design of the U-shaped elastic member, the paddle 331 can be effectively reset when rotating in two directions. This improves the stability and reliability of the flipping mechanism 30. The contact area between the paddle 331 and the U-shaped elastic arm is relatively small, so the generated frictional force is also small, which helps to further reduce wear and extend the service life of the flipping mechanism 30. Since the paddle 331 can quickly reset and be ready to contact the next convex tooth 311, the transmission efficiency of the flipping mechanism 30 is improved, which makes the lifting operation of the shutter more smooth and efficient.

[0058] In a preferred embodiment of the present utility model, the mounting hole 3211 is a square through hole that penetrates the flipping transmission seat 321 along the circumferential direction. The shape of the paddle 331 is a triangular structure, which includes two long hypotenuses and one short hypotenuse. The angular part between the two long hypotenuses extends into the accommodation space 312 between two adjacent convex teeth 311.

[0059] Based on the above structure, in the initial state, the angular part between the two long hypotenuses of the paddle 331 extends into the accommodation space 312 between two adjacent convex teeth 311. This design ensures that the paddle 331 maintains effective contact with the convex teeth 311 in the initial position. When the flipping wheel 31 rotates driven by the flipping rope, the convex teeth 311 thereon will contact the long hypotenuse of the paddle 331. The driving force of the convex teeth 311 causes the paddle 331 to start rotating, thereby driving the flipping transmission seat 321 (if not restricted by the rotation prevention structure 35) or only the paddle 331 itself to rotate (if restricted by the rotation prevention structure 35). In this way, in this embodiment, through the triangular structure and long hypotenuse design of the paddle 331, the paddle 331 can effectively contact the convex teeth 311 on the flipping wheel 31 and transmit power, realizing stable rotation control of the flipping transmission seat 321.

[0060] In a preferred embodiment of the present utility model, it further includes a bearing 36 installed on the flipping shaft connecting pipe 322. The inner ring of the bearing 36 is in close fit with the flipping shaft connecting pipe 322, and its outer ring contacts the inner wall of the second installation cavity 12.

[0061] Based on the above structure, the design of the bearing 36 enables the flipping transmission seat 321 to reduce the friction with the inner wall of the second installation cavity 12 during the rotation process. This not only improves the rotation efficiency but also extends the service life of the flipping transmission seat 321 and the bearing 36. The bearing 36 provides stable support and a rotation axis for the flipping transmission seat 321. This ensures the stability and reliability of the shutter during the flipping process, avoiding failures caused by poor rotation or jamming.

[0062] In a preferred embodiment of the present utility model, the number of the convex teeth 311 is four to eight. Based on the above structure, increasing the number of the convex teeth 311 can improve the transmission efficiency because more convex teeth 311 mean that during one rotation of the flipping wheel 31, the number of contacts between the paddle 331 and the convex teeth 311 is more, and the transmission is more continuous and stable. However, too many convex teeth 311 will also increase the structural complexity and manufacturing cost, and may cause interference and noise problems during the transmission process. The number of the convex teeth 311 is usually selected between four and eight. This range not only ensures the transmission efficiency but also avoids the structural complexity, excessive noise, and cost increase caused by too many convex teeth 311.

[0063] More preferably, the number of the convex teeth 311 is six. Within the range of four to eight, six convex teeth 311 are generally regarded as a more preferred number because it can achieve a good balance among transmission efficiency, control accuracy, structural simplicity, and noise control.

[0064] In a preferred embodiment of the utility model, the stop structure 35 includes a stop protrusion 351 arranged on the flip transmission seat 321, and a first stop portion 352 and a second stop portion 353, the first stop portion 352 and the second stop portion 353 are respectively symmetrically arranged in the second mounting cavity 12 along the vertical direction, and the first stop portion 352 and the second stop portion 353 are respectively arranged on the front and rear sides of the flip transmission seat 321; the flip transmission seat 321 drives the stop protrusion 351 to rotate, and when the stop protrusion 351 rotates to contact with the first stop portion 352, it is limited by the first stop portion 352, and when the stop protrusion 351 rotates to contact with the second stop portion 353, it is limited by the second stop portion 353.

[0065] In actual operation, when the flip wheel 31 rotates in one direction driven by the flip rope, a convex tooth 311 on the flip wheel 31 contacts the paddle 331 and drives the paddle 331 to rotate. The paddle 331 squeezes the elastic reset member 34 during the rotation process, and the paddle 331 drives the flip transmission seat 321 and the anti-rotation protrusion 351 thereon to rotate together. When the anti-rotation protrusion 351 rotates to contact the first stopper 352, the first stopper 352 limits the flip transmission seat 321 to prevent it from continuing to rotate; similarly, when the anti-rotation protrusion 351 rotates to contact the second stopper 353, the second stopper 353 also limits the flip transmission seat 321. In this way, the rotation range of the flip transmission seat 321 is limited between the first stopper 352 and the second stopper 353. In this way, the anti-rotation structure 35 of this embodiment includes a anti-rotation protrusion 351, a first stop portion 352 and a second stop portion 353, which effectively limits the rotation range of the flip transmission seat 321, improves the stability and reliability of the corner structure, is easy to manufacture and install, and reduces production costs and difficulty.

[0066] In a preferred embodiment of the present invention, the corner mounting seat 10 is further provided with a longitudinal connecting channel 121 and a transverse connecting channel 122 respectively connected to the second mounting cavity 12; the longitudinal connecting channel 121 has an inlet 1211 for the flip rope 200 to pass through, and the transverse connecting channel 122 has an insertion port 1221 for the flip shaft to pass through;

[0067] The corner mounting seat 10 is also provided with a longitudinal rope inlet channel 111 and a transverse rope outlet channel 112 which are respectively connected to the first mounting cavity 11; the longitudinal rope inlet channel 111 has a rope inlet opening 1111 for the traction rope 300 to pass through, and the transverse rope outlet channel 112 has a rope outlet opening 1121 for the traction rope 300 to pass through.

[0068] Based on the above structure, the flipping rope enters the second installation cavity 12 through the longitudinal connection channel 121 and is connected to the flipping wheel 31, thereby driving the flipping wheel 31 to rotate; while the flipping shaft is connected to the flipping shaft connecting pipe 322 through the transverse connection channel 122 to achieve stable power transmission. The traction rope enters the first installation cavity 11 through the longitudinal rope inlet channel 111 and is connected to the traction rope reversing wheel 21 to achieve the transmission and reversal of the traction force. The traction rope leaves the first installation cavity 11 through the transverse rope outlet channel 112 and continues to transmit power to other parts of the shutter. In this way, the flipping rope and the traction rope of this embodiment can achieve precise guiding and transmission within the corner mounting seat 10, avoiding the entanglement and knotting of the ropes, and ensuring the smoothness and accuracy of the lifting or flipping action of the shutter blades.

[0069] In a preferred embodiment of the present utility model, the corner mounting seat 10 includes an upper mounting seat 101 and a lower mounting seat 102, and the upper mounting seat 101 and the lower mounting seat 102 are connected in a detachable manner; a first installation cavity 11 is formed on the lower mounting seat 102, and a second installation cavity 12 is formed by enclosing between the upper mounting seat 101 and the lower mounting seat 102.

[0070] Based on the above structure, since the upper mounting seat 101 and the lower mounting seat 102 are detachably connected, when the user needs to maintain or replace components, the two parts can be easily disassembled for operation. This greatly reduces the difficulty and cost of maintenance. If a certain component fails or is damaged, the user only needs to replace the corresponding part instead of replacing the entire corner mounting seat 10. This not only saves costs but also improves the replaceability of the system. A first installation cavity 11 is formed on the lower mounting seat 102 for installing components related to the traction rope; and a second installation cavity 12 is formed by enclosing between the upper mounting seat 101 and the lower mounting seat 102 for installing components related to the flipping rope. This design makes the layout of the installation cavity more reasonable and effectively utilizes the space.

[0071] In a preferred embodiment of the present utility model, the upper mounting seat 101 and the lower mounting seat 102 are connected in a snap-fit manner; a positioning hole 1021 is provided on the top surface of the lower mounting seat 102, and a positioning post 1011 is provided at a position corresponding to the positioning hole 1021 on the upper mounting seat 101, and the positioning post 1011 is used to insert into or disengage from the positioning hole 1021.

[0072] Based on the above structure, due to the adoption of the detachable snap connection method, when users need to maintain or replace components, they can easily disassemble the upper mounting seat 101 and the lower mounting seat 102 for operation. The design of the positioning holes 1021 and the positioning posts 1011 ensures the accurate alignment of the upper mounting seat 101 and the lower mounting seat 102 during the installation process, avoiding system instability or damage caused by installation position deviation. The combination of the snap connection and the positioning holes 1021 / positioning posts 1011 forms a dual connection mechanism, greatly enhancing the connection stability between the upper mounting seat 101 and the lower mounting seat 102.

[0073] Although only some components and embodiments of the present application have been illustrated and described, many modifications and changes can be envisioned by those skilled in the art without actually departing from the scope and spirit of the claims, such as changes in the size, dimensions, structure, shape and proportion, installation arrangement, material use, color, orientation, etc. of each element.

[0074] The above embodiments are only the preferred embodiments of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any non-substantive changes and substitutions made by those skilled in the art based on the present utility model fall within the scope of protection required by the present utility model.

Claims

1. A corner structure of a blind, comprising a corner mounting seat, a traction mechanism and a flip mechanism, wherein the corner mounting seat is provided with a first mounting cavity and a second mounting cavity; the traction mechanism comprises a traction rope reversing wheel, and the traction rope reversing wheel is rotatably mounted in the first mounting cavity; characterized in that: The flipping mechanism comprises a flipping wheel, a flipping transmission member, a toggle assembly, an elastic reset member and a rotation-stopping structure; The flip transmission member comprises a flip transmission seat rotatably mounted in the second mounting cavity, one end of the flip transmission seat is provided with a flip shaft connecting pipe, and the other end thereof is provided with a flip synchronization shaft; a mounting hole is provided on the flip transmission seat; The flip wheel is mounted on the flip synchronization shaft, and a plurality of convex teeth evenly distributed along the circumference of the flip wheel are arranged on the side surface of the flip wheel, and a receiving space is formed between any two adjacent convex teeth; The paddle assembly comprises a paddle and a hinge shaft, the paddle is rotatably mounted in the mounting hole via the hinge shaft, and a portion of the paddle extends into the accommodation space between two adjacent convex teeth; The elastic reset member is mounted on the flip transmission seat, and the elastic reset member is used to reset the paddle so that a portion of the paddle always extends into the accommodation space between two adjacent convex teeth; The anti-rotation structure is located in the second installation cavity, and the anti-rotation structure is used to limit the rotation range of the flip transmission seat.

2. The corner structure according to claim 1, characterized in that, The side surface of the flip transmission seat located on one side of the flip synchronization shaft is provided with a mounting groove; The elastic reset member is a U-shaped elastic member, which is installed in the installation groove; the U-shaped elastic member includes a first elastic arm and a second elastic arm, and the paddle is located between the first elastic arm and the second elastic arm; when the paddle rotates to contact the first elastic arm, it is reset by the first elastic arm, and when the paddle rotates in the opposite direction to contact the second elastic arm, it is reset by the second elastic arm.

3. The corner structure according to claim 1, characterized in that, The mounting hole is a square through hole that penetrates the flip transmission seat along the circumferential direction. The paddle is in the shape of a triangular structure, which includes two long oblique sides and one short oblique side. The corner portion between the two long oblique sides extends into the accommodating space between two adjacent convex teeth.

4. The corner structure according to claim 1, wherein It also includes a bearing installed on the flip shaft connecting tube, the inner ring of the bearing is tightly matched with the flip shaft connecting tube, and the outer ring of the bearing is in contact with the inner wall of the second installation cavity.

5. The corner structure according to claim 1, wherein The number of the protruding teeth is four to eight.

6. The corner structure according to claim 5, characterized in that, The number of the protruding teeth is six.

7. The corner structure according to claim 1, characterized in that, The anti-rotation structure includes a anti-rotation protrusion arranged on the flip transmission seat, and a first stop portion and a second stop portion, the first stop portion and the second stop portion are symmetrically arranged in the second mounting cavity along the vertical direction, and the first stop portion and the second stop portion are respectively on the front and rear sides of the flip transmission seat; the flip transmission seat drives the anti-rotation protrusion to rotate, and when the anti-rotation protrusion rotates to contact with the first stop portion, it is limited by the first stop portion, and when the anti-rotation protrusion rotates to contact with the second stop portion, it is limited by the second stop portion.

8. The corner structure according to claim 1, characterized in that: The corner mounting seat is further provided with a longitudinal connection channel and a transverse connection channel respectively communicating with the second installation cavity; the longitudinal connection channel has an inlet for the flipping rope to pass through, and the transverse connection channel has an insertion port for the flipping shaft to pass through. The corner mounting seat is further provided with a longitudinal rope inlet channel and a transverse rope outlet channel respectively communicating with the first installation cavity; the longitudinal rope inlet channel has a rope inlet for the traction rope to pass through, and the transverse rope outlet channel has a rope outlet for the traction rope to pass through.

9. The corner structure according to claim 1, wherein The corner mounting seat includes an upper mounting seat and a lower mounting seat, and the upper mounting seat and the lower mounting seat are connected in a detachable manner; the first installation cavity is formed on the lower mounting seat, and the second installation cavity is enclosed between the upper mounting seat and the lower mounting seat.

10. The corner structure according to claim 9, wherein The upper mounting seat and the lower mounting seat are connected in a snap - connection manner; positioning holes are provided on the top surface of the lower mounting seat, and positioning columns are provided at positions corresponding to the positioning holes on the upper mounting seat, and the positioning columns are used to insert into or disengage from the positioning holes.

Images