Winding kinematic pair mechanism and sunshade equipment

Abstract

The utility model discloses a winding kinematic pair mechanism and sunshade equipment, relates to the technical field of sunshade, and is used for solving the problems that a covering object is deformed and damaged due to the fact that the position and connection of the mechanism are limited and the covering object cannot be completely borne, and reducing the size of matched parts of the covering object. The roller shutter kinematic pair structure comprises a first driven piece, a second driven piece, a third driven piece, a transition piece, a driver and a covering. The driver comprises a supporting part and a power output end, the first driven piece comprises a first supporting part, a first bearing table, a second bearing table, a first limiting part, a first groove and a second groove, the transition piece comprises a fourth groove and a first sleeve, the third driven piece comprises a third groove and a third flange, the second driven piece comprises a second supporting part, and the second driven piece comprises a second supporting part. A third bearing platform, a fourth bearing platform, a fourth groove, a fifth groove and an eleventh groove. The driver, the transition piece and the third driven piece are in coaxial transmission with the first driven piece and the second driven piece.

Description

Technical Field

[0001] The present application relates to the technical field of sunshade equipment, and more specifically to a winding motion pair mechanism and a sunshade equipment. Background Art

[0002] The two ends of the roller of sunshade equipment such as roller blinds are fixed. If a windproof effect is to be achieved, fixed guide grooves must be installed on both sides of the fabric. One end of the fabric is fixed on the roller, and zippers are welded on both sides of the fabric and stuck in the guide grooves. The fabric is retracted and extended around the radial winding of the roller. A driver (such as a motor, spring, manual clutch, etc.) is placed inside the roller as the drive for the roller blind.

[0003] The existing technology of roller blinds can only be installed on the drum. One side of the drum is connected to the driven part of the driver, and the other side is connected to the driven part of the drum. Due to the thickness of the driver, the assembly of the driven part, and the limitation of the shaft and other connecting parts, the roller blind fabric will be suspended a large distance to the guide groove of the side rail. The fabric is relatively soft and cannot get enough support, so it will deform and wrinkle, affecting its use. The second method is to increase the size of the side rail to cover this distance, and the fabric does not need to be suspended. In this solution, the volume of the side rail will be relatively large. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a winding motion pair mechanism and a sunshade device, which provide sufficient support for the fabric, prevent the fabric from deforming and wrinkling, expand the covering space of the covering, and save the internal space of the sunshade device, so that the volume of the covering and the parts that cooperate with it become smaller, saving the internal space of the sunshade device. The present application specifically includes the following solutions:

[0005] In the first aspect, the present application provides a winding motion sub-mechanism, including: a first follower, a second follower, a third follower, a transition piece, a driver, and a covering; wherein: the driver includes a support portion and a power output end, the first follower includes a first support portion, a first bearing platform, a second bearing platform, a first limiting portion, a first groove, and a second groove, the transition piece is drivingly connected to the power output end of the driver, the fourth groove of the transition piece is connected to the third flange of the third follower, the third follower also includes a third groove, the outside of the third groove is a third flange, the second support portion of the second follower is carried by the support portion of the driver, the first bearing platform is used to connect to one end of the third follower, the other end of the third follower is connected to the third bearing platform of the second follower, and the second follower also includes a fourth bearing platform, a fourth groove, and a fifth groove. Wherein:

[0006] The inner side of the second bearing platform is a second supporting part, and the fourth bearing part also includes a second cavity, which is used to avoid interference from axially connected parts, drivers and other connecting parts;

[0007] The shaft at one end of the driver is used to be connected and fastened, and the first support portion of the first follower can be used to connect with a radially rotatable part such as a bearing;

[0008] One end of the covering passes through the second groove, the third groove and the fifth groove respectively and is wound on the surfaces of the first follower, the second bearing platform and the fourth bearing platform. The covering also includes a zipper, which is arranged on both sides of the covering.

[0009] The covering of a winding motion sub-mechanism of the present application can be wound on the surfaces of the first follower, the second follower and the third follower at the same time, and the covering can be supported by the second support platform and the fourth support platform at both ends of the third follower respectively, so the axial space between the first follower and the second follower is reasonably utilized, and deformation and wrinkling of the covering are prevented.

[0010] In one implementation, the first follower, the second follower, the third follower, the transition piece and the driver are coaxially connected, and the contour centers of the first groove, the third groove and the fourth groove are connected to coincide with each other.

[0011] In one implementation, along the axial direction of the driver, the connecting lines of the rotation centers of the first driven member, the second driven member, the third driven member, the transition member, and the power output end of the driver coincide with each other.

[0012] In the above two implementations, the rotation centers of the driver output shaft, the first follower, the second follower, the third follower, and the transition member are arranged on the same straight line, so that the transmission is smooth and one end of the covering can be fixed in a straight line and flush in the third groove, the second groove, and the fifth groove, and the main body of the wound covering except the zipper can be carried.

[0013] In one implementation, the second supporting platform and the fourth supporting platform are shoulder-type structures, that is, a step is provided on the second supporting platform and the fourth supporting platform respectively, and the step is used to place the zipper of the covering. The step can support the zipper while keeping the width center of the zipper level with the width center of the main body of the covering (the width center of the first layer of the rolled covering).

[0014] In one implementation, the outer contours of the second bearing platform, the fourth bearing platform and the third follower are equal or nearly equal, so that the covering can be smoothly rolled up. The first limiting portion is connected to one end face of the axial direction of the third follower in a coincident manner, and the second limiting portion is connected to the other end face of the axial direction of the third follower in a coincident manner, and the axial direction of the third follower is fixed by the first limiting portion and the second limiting portion.

[0015] In one implementation, the first groove and the fourth groove are respectively connected to the third flange and transmit torque, and when the power output end of the driver rotates, the transition piece, the third driven piece, the second driven piece, and the first driven piece also rotate synchronously.

[0016] In one implementation, a seventh groove is provided inside the second support portion, and the outer side of the seventh groove is a third bearing platform, which can reduce the axial length of the second follower and make the second follower shorter.

[0017] In a second aspect, the present application provides a sunshade device, including a covering and a winding motion sub-mechanism provided by any of the above-mentioned implementation methods, the winding motion sub-mechanism is used to support and wind the covering, thereby achieving the function of retracting and releasing the covering.

[0018] The sunshade device provided in the second aspect of the present application uses the winding motion pair mechanism provided in the first aspect of the present application to support and wind up the covering. Because the winding motion pair mechanism provided in the first aspect of the present application can expand the range of support for the covering, it prevents the covering from wrinkling and deforming due to being suspended in the air without support. Because the axial dimension of the second follower is small, the internal space of the sunshade device is saved, and the volume of other matching parts of the sunshade device is reduced.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present application, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0021] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 It is a schematic diagram of the assembly structure of some parts of the sunshade device, which is a windproof roller blind;

[0023] Figure 2 It is the assembly and partial enlarged schematic diagram of some parts of the winding motion pair mechanism;

[0024] Figure 3 This is one of the exploded schematic diagrams of the winding kinematic pair mechanism;

[0025] Figure 4 This is one of the exploded schematic diagrams of the winding kinematic pair mechanism;

[0026] Figure 5 It is a cross-section and partial enlarged schematic diagram of the assembly structure of the first driven member, the second driven member, the third driven member and the driver;

[0027] Figure 6 A schematic diagram of the structure and cross section of an embodiment in which the transition piece is made of metal and / or plastic;

[0028] Figure 7 This is a structural schematic diagram of an implementation method in which the material of the transition piece is metal;

[0029] Figure 8 A partial cross-sectional schematic diagram of the assembly of the transition piece and the third driven piece;

[0030] Fig. 9 A schematic diagram of an implementation method in which the material of the third follower is a metal welded pipe;

[0031] Fig.10 A schematic diagram of an implementation method in which the third follower is made of aluminum alloy;

[0032] Fig.11 is a schematic cross-sectional view of the assembly of the first follower, the third follower and the second follower;

[0033] Fig.12 is an embodiment of the first follower, wherein (a2), (b2), and (c2) respectively show schematic diagrams of the back side, front side, and side view of the first follower;

[0034] Fig.13 An embodiment of a second follower, wherein (a1)(b1)(c1)(D1) respectively show the front, back, side view, and partial cross-sectional schematic diagram of the second follower;

[0035] Fig.14 A schematic diagram of a sunshade device including a winding motion pair mechanism from a side view;

[0036] Fig.15 A schematic diagram of the structure and appearance of an implementation method of a first follower;

[0037] Fig.16 It is a schematic diagram of the appearance of the assembly structure of some parts of the sunshade device including the winding motion pair mechanism;

[0038] Fig.17 A schematic diagram of the structure and appearance of an implementation scheme of a second follower;

[0039] Fig.18 is a schematic diagram of an implementation of the first follower;

[0040] Fig.19 is an embodiment of the second follower, wherein (a6), (b6), and (c6) respectively show schematic diagrams of the second follower in the embodiment from the front, back, and one side perspectives;

[0041] Fig. 20 is an embodiment of the first follower, wherein (a7), (b7), and (c7) respectively show schematic diagrams of the front, back, and side views of the first follower in the embodiment;

[0042] Fig.21 An embodiment in which the material of the third follower is aluminum alloy, wherein (a8) and (b8) illustrate a plan view and a schematic view from a side perspective of the third follower;

[0043] Fig. 22 is an embodiment of the second follower, wherein (a9), (b9), and (c9) respectively show schematic diagrams of the second follower in the embodiment from the front, back, and one side perspectives;

[0044] Fig.23 In one embodiment, the transition piece is made of metal and / or plastic, wherein (a10), (b10), and (c10) respectively show the front, back, and side views of the transition piece. DETAILED DESCRIPTION

[0045] The following is a detailed description of the embodiments of the utility model, and examples of the embodiments are shown in the drawings, where the same reference numerals are used to represent the same component or the same component, and only one of the parts or components may be used as an example to mark a component or the same component. For the same components in the embodiments of the present application, the figure may only use one of the parts, or multiple different features or components in a part as an example to mark the reference numerals. It should be understood that the reference numerals are also applicable to other identical parts or components. In addition, the components in the drawings are not drawn to scale, and the dimensions and sizes of the components shown in the drawings are only exemplary and should not be understood as limiting the present application.

[0046] In the description of the embodiments of the present application, the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate positions or positional relationships that are defined relative to the positions or positions of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for description and clarification relative to the drawings, rather than indicating or implying that the device or part referred to must have a specific position, or be constructed and operated in a specific position. It may change accordingly according to the change in the position of the components placed in the drawings, and therefore cannot be understood as a limitation of the present application. In addition, the terms "vertical", "horizontal", "coaxial", "equal", etc. involved in the present application are not "vertical", "horizontal", "coaxial", "equal" in the strict sense, but are within the allowable error range.

[0047] In the description of this application, the meaning of "several" is more than one, the meaning of "many" is more than two, the meaning of "greater than", "less than", "exceed" etc. is not inclusive of the number, and the meaning of "above", "below", "within" etc. is inclusive of the number. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0048] Throughout the specification and claims, “ / ” means or, for example, A / B can mean A or B; “and / or” in this article is only a way to describe the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0049] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this utility model based on the specific content of the technical solution.

[0050] In the embodiments of the present application, unless the context requires otherwise, throughout the specification and claims, the term "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "exemplarily" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present application. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics described may be included in any one or more embodiments or examples in any appropriate manner.

[0051] For the convenience of description, the direction of the bottom edge 601 of the side rail 600 of the sunshade device 200 is defined as the X direction (for example Figure 1 The horizontal direction of the paper shown in FIG. 6 may also be referred to as the X-axis direction). The direction perpendicular to the edge 601 and parallel to the direction of the edge 602 is the Y-direction (eg Figure 1 The vertical direction of the paper shown in FIG. 6 is also referred to as the Y-axis direction), and the direction perpendicular to the edge 601 and perpendicular to the edge 602 is the Z direction (for example, Figure 1 The direction perpendicular to the paper surface shown in the figure may also be referred to as the Z-axis direction). Similarly, the definitions of the X, Y, and Z directions also apply to the drawings to be described later. If not specifically stated, the X, Y, and Z directions include their positive and negative directions. It should be noted that the above definitions of the X, Y, and Z directions are only for the convenience of describing the positional relationship and connection relationship between the various components in the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0052] The sunshade device of the embodiment of the present application is a sunshade device such as a roller blind, a ceiling blind, etc., which has a rotatable function and is used to roll up a covering material (such as fabric, TPU, etc., which has a light-shielding or block-shielding function). The present application does not impose any special restrictions on its specific form. For the convenience of explanation and understanding, the following description is made by taking the sunshade device as a windproof roller blind 200 as an example.

[0053] For ease of understanding of one of the problems that this application aims to solve: illustratively, Figure 1 The schematic diagram shows the front view of the structural appearance of the partial parts of the windproof roller blind 200, wherein zippers 61 are provided at both ends of the cover 6 to prevent displacement and deformation of the cover 6 in the Z direction, and the main part of the cover 60 is wound on the surface of the third follower 3, because the positive and negative directions of the axial direction of the third follower 3 need to be limited and fixed by follower-like parts, as shown in the figure, 62 and 63 fix the axial movement of the third follower 3. And the cover 6 needs to extend to the slot mechanism of the side rail 600 to set the tension, so a section of unsupported suspended space 65 will be formed, and the suspension will cause deformation and wrinkles of the cover 6. The second solution is to increase the width of the side rail 600, that is, increase the size in the X direction, so that the cover does not need to be extended, but the volume of the side rail will increase.

[0054] One of the problems that the present application aims to solve is: deformation and wrinkles caused by partial suspension of the covering 6 in the axial direction of winding without support, rational use of the internal space of the sunshade device, and reduction of the volume of the parts of the winding mechanism and the parts that cooperate therewith.

[0055] See also Figure 3-Figure 5 The present application provides a winding motion pair mechanism that has a rotatable function to wind up a covering object, comprising: a first follower 1, a second follower 2, a third follower 3, a transition member 4, a driver 5, and a covering object 6. Among them:

[0056] The first follower 1 and the second follower 2 are respectively arranged at the two ends of the third follower 3 in the Z direction, and the positions of the first follower 1 and the second follower 2 can be interchanged. When their positions are interchanged, the second follower 2 needs to be interchanged together with the driver 5 at the same time; the second follower 2 is connected to the support part 20 of the driver 5, and the support part 20 can rotate radially, and correspondingly, the second follower 2 will also rotate radially.

[0057] The power output end 55 of the driver 5 is coaxially connected to the transition piece 4. The axial direction of the transition piece 4 is fixed to the power output end 55. The power output end 55 can rotate along the radial direction of the driver 5 to output torque. The driver 5 can be a power output device such as a motor, a spring, and a brake. Exemplarily, the driver 5 is a motor. The bearing shaft 300 at the other end of the driver 5 plays a role in supporting the driver 5 and can also withstand the reaction force of the torque of the power output end 55 of the driver 5. It is used to connect and be fixed with the mounting code parts of the sunshade device.

[0058] In one embodiment, the material of the transition piece 4 is metal and / or plastic. Figure 6 , Fig.23 , Figure 6 (a3), (b3), and (c3) show the front view, exploded schematic diagram, and partial cross-sectional schematic diagram of the transition piece 4, respectively. The figure exemplarily shows an implementation method in which the material of the transition piece 4 includes both plastic and metal, wherein the main body of the transition piece 4 is plastic 43, and the first sleeve 41 drivingly connected to the power output end 55 contains a metal sheet 42 (exemplarily, the material of the metal sheet 42 is Q235 steel), and the transition piece 4 is prepared by injection molding plastic with the metal sheet 42. Furthermore, exemplarily, the transition piece 4 is also provided with a plurality of positioning holes 44 for positioning the metal sheet 42 during injection molding, and the positioning holes 44 ensure that the metal sheet 42 can be correctly injected into the Figure 6 The position shown in C3, that is, the metal sheet 42 is completely wrapped by the plastic, and its degree of freedom is completely constrained by the plastic. The metal sheet also includes a second sleeve 48, and the contour centers of the first sleeve 41 and the second sleeve 48 coincide, so that the first sleeve 41 can withstand a larger torque of the driver 5 without deformation.

[0059] Furthermore, the transition piece 4 further includes a plurality of reinforcing ribs, which are used to strengthen the bearing strength of the transition piece. Exemplarily, the transition piece 4 includes a first reinforcing rib 45, a ninth bearing platform 46 and a first bottom surface 47. The number of reinforcing ribs is not limited in this embodiment. Exemplarily, Figure 6 The number of the first reinforcement ribs is 4. Fig.23 In one embodiment of the intermediate transition piece 4, the number of first ribs in the figure is 8. Figure 6The first reinforcing rib 45 is disposed on the first bottom surface 47, and is connected to the sleeve 41 and the ninth bearing platform 46. This allows the ninth bearing platform 46 to withstand a greater torque, and also allows the transition piece 4 to be more easily filled with plastic during injection molding, thereby improving the yield rate. The ninth bearing platform 46 also includes a taper and / or a tightening boss, which has a guide function when assembled with the third follower.

[0060] In one embodiment, the material of the transition piece 4 is metal, such as aluminum alloy, zinc alloy, stainless steel, etc. For example, the material of the transition piece is aluminum alloy. Figure 7 , (a4) and (b4) in the figure respectively show the front and side views of the transition piece 4, wherein the transition piece 4 is formed by extrusion of aluminum alloy and then by subsequent machining and cutting, and it can also be integrally cast by die casting. In this embodiment, because the transition piece 4 is made of metal, the hardness of the sleeve 41 is high and it can withstand a large torque, so only the reinforcing rib 45 needs to be provided to connect the ninth bearing platform 46 to transfer the torque.

[0061] The outer side 49 of the transition piece 4 is provided with one or more grooves for power transmission; the inner side of the third driven piece 3 is provided with one or more flanges for power transmission; please refer to Figure 4 , Figure 8 Exemplarily, the sixth groove 47 of the transition piece 4 is drivingly connected to the third flange 30 of the third follower 3 , and the outer side 49 of the transition piece 4 is carried inside the third follower 3 .

[0062] In one embodiment, the flange and rib of the third follower 3 have the function of increasing the supporting bending moment thereof, so that it can bear a heavier covering 6 without deformation. In this embodiment, there is no restriction on the number of flanges and ribs, nor on their shapes. The number of flanges is at least one, or may be multiple; the number of ribs may be zero, one, or multiple. For example, Fig. 9 , Fig.10 , Fig.21 In some embodiments of the third follower, Fig. 9 There is only one flange, which is the third flange 30 and has no ribs. Fig.10 The number of flanges is 3 and the number of ribs is 2. As shown in the figure, 401, 402, and 403 are flanges, and 405 and 406 are ribs. Fig.21 The number of the middle flanges and ribs is 4. Each flange and / or rib inside it can be used alone and / or together to transmit torque, which also increases its ability to withstand bending moments.

[0063] In one embodiment, the third follower is made of metal or plastic, such as aluminum alloy, iron, stainless steel, PVC, etc. Fig. 9The third follower 3 shown is a metal welded pipe, which is produced by bending and welding metal such as steel plates or steel strips through various forming methods. In this way, it is not suitable to make too many reinforcement structures inside to increase its ability to withstand bending moments, but the production cost is low, and the inside is connected to the first follower 1 and the second follower 2 through interference fit.

[0064] In one embodiment, the first loading platform 10 and the third loading platform 24 have an assembly guide function, see Figure 4-Figure 5 , Figure 11-13 , Figure 17-20 , Fig. 22 As shown in the example, the first support platform 10 and the third support platform 24 are conical surfaces with guiding functions, and the contour dimensions at the entrances where they are assembled with the third follower 3 are smaller than the inner contour dimensions of the third follower 3, so that the first follower 1 and the second follower 2 can be easily guided into the interior of the third follower 3, and the end dimensions thereof are equal to or larger than the inner contour dimensions of the third follower 3, so that a tight fit can be achieved.

[0065] In another pouring, connecting and fastening embodiment, the entrance ends of the first bearing platform 10 and the third bearing platform 24 and the third follower 3 are chamfered to provide a pouring function. The sizes of the first bearing platform 10 and the third bearing platform 24 are smaller than the internal contour size of the third follower 3, and in this way, the press-fit assembly of the first follower 1, the second follower 2 and the third follower can also be facilitated. The surfaces of the first bearing platform 10 and the third bearing platform 24 also include a plurality of tightening bosses 13. The tightening boss 13 is conical, and its size can be increased or decreased according to the needs of the mating connection, and can be the same size or different sizes. It is used for space adjustment (reducing the gap in the connection of the mating bodies) and reducing vibrations generated when power is transmitted between the mating bodies. Figure 6 and Fig.23 In some embodiments of the transition piece shown in , a plurality of tightening bosses 13 are also provided on the outer side 49 thereof.

[0066] The above two assembly methods can be implemented separately or in combination. Fig.18 A schematic diagram of an implementation of the first follower 1 in FIG. 1 is shown, in which the first bearing platform 10 is a conical surface and a chamfer is provided on the edge of the outer edge.

[0067] In some embodiments, see Fig.10 , Fig.21 The third follower 3 shown in the figure is an aluminum alloy tube; its production method is through die extrusion molding. In this embodiment, one and / or several ribs and flanges can be arranged inside it to increase its ability to withstand bending moments. The ribs also include several C-shaped notches for fastening and connecting with the first follower 1 and the second follower 2 in the axial direction. Fig.10Exemplarily, the third follower 3 also includes a first C-shaped groove 31 and a second C-shaped groove 32 . Fig.21 There are four C-slot features shown in FIG.

[0068] In one embodiment, the rotation center of the third follower 3 is connected to and coincides with the rotation center of the transition piece 4 , and the transition piece 4 is completely carried inside the third follower 3 .

[0069] See also Figure 4-Figure 6 , Fig.13 The support portion 20 of the driver 5 is connected to the second support portion 21 of the second follower 2 . The second support portion 21 also includes a seventh groove 22 for clamping and positioning with the driver 5 . The seventh groove 22 is connected to the first flange 23 on the support portion 20 .

[0070] In one embodiment, the support portion 20 of the driver 5 is a mechanical limit synchronous transmission ring of the driver, a screw limit switch is provided inside the driver, the support portion 20 is used to feed back position information to the screw limit switch, and the seventh groove 22 is connected to the first flange 23 so that the position information of the second follower 2 during rotation can be synchronously fed back to the screw limit switch.

[0071] The number of the seventh grooves 22 is not limited in this embodiment. For example, the number of the seventh grooves is 2. The seventh grooves 22 are arranged in the second support portion. The outside of the second support portion 20 is the third bearing platform 24. The seventh groove 22, the second support portion 20, and the third bearing platform 24 are all arranged in the same direction of the X-axis, that is, on the same side. The advantage of this arrangement is that the axial size of the second follower 2 can be reduced, and the axial space of the second follower 2 can be reasonably utilized. Figure 1 . Figure 5 , Fig.14 As shown, because the second follower 2 is smaller in size in the X-axis direction, the covering 6 can obtain more support on the third follower, which indirectly reduces the size of the side rail 600. The side rail 600 does not need to increase its size in the X-axis to achieve the covering and shielding effects.

[0072] In one embodiment, see Figure 2 , Figure 4-Figure 5 and Fig.14 The fourth bearing platform 82 is used to bear the covering object 6 , and the second cavity 232 formed therein is used to avoid interference with the flange body 233 of the driver 5 , and also reasonably utilizes the axial space of the second follower 2 .

[0073] See also Figure 2 , Figure 4-Figure 5 , Fig.13In one embodiment, the first follower 1 and the second follower 2 are made of metal and / or plastic. The outer sides of the first follower and the second follower 2 are provided with one or more grooves for power transmission. For example, the first bearing platform 10 of the first follower and the third bearing platform 24 of the second follower 2 are provided with a first groove 11 and an eighth groove 25, respectively. The first groove and the eighth groove 25 are connected to the third flange 30 of the third follower 3. The rotation centers of the first follower 1, the second follower 2, the third follower 3 and the transition member 4 coincide. One end of the third follower 3 is carried on the third bearing platform 24, and the other end thereof is carried on the first bearing platform 10. The first follower 1 and the second follower 2 rotate synchronously with the third follower 3.

[0074] Furthermore, combined with Figure 5 , Figure 12-13 A first limiting portion 26 and a second limiting portion 12 are respectively provided on one side of the first bearing platform 10 and the third bearing platform 24. The first limiting portion 26 coincides with the first end face 33 in the axial direction of the third follower 3, and the second limiting portion 12 coincides with the second end face 34, so that the movement of the third follower 3 in the X direction can be limited.

[0075] See also Figure 5 and Figure 11-Figure 12 , Fig.15 , a plurality of limiting bosses 14 are provided in the first supporting portion 17 in the first follower 1. The end faces on both sides of the boss are perpendicular to the axis of the first follower 1 so that the interior thereof can be assembled with a rolling element. Exemplarily, the first end face 301 and the second end face 302 of the limiting boss 14 are perpendicular to the axis of the first follower 1. The limiting boss 14 enhances the strength of the first supporting portion 17 and also serves as an anti-shrinkage function (when the first follower 1 is implemented in plastic, it has an anti-shrinkage function). Elements for rotation and support, such as bearings, cams, etc., can be placed on both sides of the limiting boss 14. Exemplarily, the outer ring of the rolling element 15 abuts against the first support portion 17, so that the first follower 1 is supported on the rolling element 15, and an axial end face of the rolling element 15 coincides with an end face of the limiting boss 14; the inner ring of the bearing is connected to the shaft 16, and the shaft 16 bears the reaction force of the bending moment and torque and does not rotate with the first follower 1, that is, the freedom of movement of the shaft 16 is completely fixed.

[0076] In one embodiment, the first follower 1 and the second follower 2 further include through holes for connection and fastening, and the number of the through holes may be one or more. Figure 12-13 , Figure 18-Figure 20 , illustratively, the first follower 1 and the second follower 2 further include a first through hole 27, a second through hole 28, a third through hole 29, and a fourth through hole 30, respectively. Fig.19, the figure shows an embodiment of the second follower 2, in which the number of through holes is 4. Fig.10 , Fig.11 ,in Fig.10 It is an embodiment of the third follower 3, and (a5) and (b5) in the figure respectively show a plan view and a side view of the third follower 3. The first through hole 27, the second through hole 28, the third through hole 29, and the fourth through hole 30 are respectively connected to the first C-shaped groove 31 and the second C-shaped groove 32 through the fastener 29. For example, the fastener 29 is a self-tapping screw, which mainly serves to fasten the second follower 2, the first follower 1, and the third follower 3.

[0077] See also Figure 1-Figure 4 One end of the covering 6 is respectively stuck in the tenth groove 18, the third groove 19 and the eleventh groove 80 of the first follower, the third follower and the second follower, and the main body of the covering 6 is wound on the second support platform 81, the third follower 3 and the fourth support platform 82. The covering 6 is an article with shading or blocking properties such as fabric, thermoplastic polyurethane elastomer rubber (TPU), etc., and the two sides of the covering 6 also include limiting elements, and the limiting elements are exemplarily zippers 61, which can be used to connect with parts with card slots (combined with Fig.16 The middle guide groove 66 can prevent the fabric from deforming along the Z direction.

[0078] For further information, see Figure 2-Figure 4 , Figure 13-Figure 15 The outer contours of the second bearing platform 81, the fourth bearing platform 82 and the third follower 3 are flush with each other, and the main body of the covering 6 can remain horizontal when it is completely wound on the surfaces of the second bearing platform 81, the fourth bearing platform 82 and the third follower 3. One side of the zipper 61 is in contact with, or close to contact with, one end surface of the second bearing platform 81 and the fourth bearing platform 82, so that the axial space between the first follower 1 and the second follower 2 can be fully utilized, so that the covering 6 can be loaded with the maximum area, thereby preventing the covering 6 from being deformed due to lack of support.

[0079] In another embodiment, see Fig.12 , Fig.16 and Fig.17 The first bearing platform 81 and the fourth bearing platform 82 are shoulder-type structures, which are provided with a first step 90 and a second step 91 respectively. The zipper 61 is carried on the first step 90 and the second step 91, so that the zipper 61 can be fully carried while being wound around the first follower 1, the second follower 2, and the third follower 3. The center of the width of the first layer of the covering 6 is kept flush or nearly flush. In this way, the covering 6 can also be sufficiently supported to prevent it from being deformed.

[0080] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of protection of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A winding motion pair mechanism, characterized in that: It includes a first follower, a second follower, a third follower, a transition piece, a driver, and a cover. The driver includes a support portion and a power output end. The first follower includes a first support portion, a first bearing platform, a second bearing platform, a first limit portion, a first groove, and a second groove. The transition piece includes a fourth groove and a first sleeve. The third follower includes a third groove and a third flange. The second follower includes a second support portion, a third bearing platform, a fourth bearing platform, a fourth groove, a fifth groove, and an eleventh groove. The driver, transition piece, third follower, first follower and second follower are coaxially driven, the driver is arranged inside the third follower, the transition piece is carried by the third follower, the power output end of the driver is carried by the transition piece, the support end of the driver carries the second follower, the fourth bearing platform of the second follower and the first bearing platform of the first follower support the third follower, the covering includes a limiting element, and the covering is wound on the first follower, the second follower and the third follower.

2. A winding motion pair mechanism as claimed in claim 1, characterized in that: The connecting lines of the rotation centers of the first follower, the second follower, the third follower, the transition member, and the driver coincide with each other, and the outer contours of the first follower, the second follower, and the third follower are flush or nearly flush with each other.

3. A winding motion pair mechanism as claimed in claim 2, characterized in that: The axial direction of the third follower is completely fixed by the first follower and the second follower.

4. A winding motion pair mechanism according to any one of claims 1 to 3, characterized in that: The driver outputs torque, and the power output end of the driver, the transition piece, the first driven piece, the second driven piece, and the third driven piece rotate synchronously.

5. A winding motion pair mechanism as claimed in claim 4, characterized in that: The third flange of the third active member is used to transmit torque and enhance its ability to withstand bending moments. The transition member is internally provided with a first reinforcing rib, and its ninth bearing platform is a surface with a conical surface and / or a chamfered edge or a straight surface.

6. A winding motion pair mechanism as claimed in claim 1, characterized in that: The first support portion of the first follower is provided with a plurality of limiting bosses, the end surfaces on both sides of the limiting bosses are perpendicular to the axis of the first follower, and the limiting bosses are connected to the rolling elements.

7. A winding motion pair mechanism as claimed in claim 1, characterized in that: The fourth bearing platform in the second follower, the second supporting portion and the seventh groove are arranged in the same direction.

8. A winding motion pair mechanism according to claim 1 or 7, characterized in that: The first bearing platform, the fourth bearing platform and the outer side of the transition piece also include a tightening boss.

9. A winding motion pair mechanism as claimed in claim 1, characterized in that: The second carrying platform and the fourth carrying platform are also used for carrying and rolling up the covering. The second carrying platform and the fourth carrying platform include shoulders, and the shoulders are used for carrying and rolling up the covering.

10. A sunshade device, characterized in that: The invention comprises a covering and a winding motion pair mechanism as described in any one of claims 1 to 9, wherein the winding motion pair mechanism is used for supporting and winding the covering.

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