Connecting device

Abstract

The utility model provides a connecting device which is used for connecting an upstream blade and a downstream blade in a building shielding system. The connecting device comprises an upstream end part, a downstream end part and a connecting part. Wherein the connecting part comprises a clamp in a special shape, the clamp is provided with two legs, one leg sequentially penetrates through the receiving holes in the upstream end part and the downstream end part, the end of the other leg is bent into a hook shape to buckle the exposed tail of the first leg, and therefore the upstream end part and the downstream end part are reliably connected. Compared with the prior art, the connecting device has the advantages of being simple in structure, convenient to assemble, high in bearing capacity and the like, and the reliability and the flexibility of the shielding system can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building materials, and more specifically to a technology for manufacturing a shading system (such as roller blinds or the like) for buildings, which is used to shade rooms in buildings, especially suitable for sun rooms, glass roofs or skylights, but not limited thereto. Such a system plays an important role in regulating indoor light, heat insulation, and improving the comfort of the living or working environment. Background Art

[0002] With the increasing diversification of modern architectural designs, more and more buildings have adopted large-area glass curtain walls or daylighting roofs and other structures, which have greatly improved indoor lighting and the view. However, excessive sunlight exposure may also cause glare and result in too high indoor temperature, increasing the air-conditioning load. Therefore, in these buildings, it is usually necessary to install a sunshade system to control the light entering the room through adjustable shading devices.

[0003] Currently, the common shading systems mainly fall into two categories. One category is flat materials, such as cloth curtains, venetian blinds, etc.; the other category is a curtain structure composed of hinged blades. Compared with flat materials, the blade curtain has better light-shielding and heat-insulating effects and is convenient for automatic control. This curtain moves between the retracted and deployed positions through a rotating shaft and a driving device. When retracted, the blades are rolled up into a storage state, and when fully deployed, they form a continuous shading surface.

[0004] Such a blade curtain usually includes a plurality of blades that are adjacent to each other and hinged in pairs. During the retraction and deployment of the curtain, relative rotation occurs between the blades. Therefore, a suitable connecting device needs to be provided between the blades, which should not only ensure the reliable connection of adjacent blades but also allow sufficient rotational freedom between the blades.

[0005] In the prior art, the connecting component of such a connecting device is usually a bolt, which is horizontally arranged on the upper support of the downstream end component and rotatably cooperates with the lower support of the upstream end component. However, during the process of retracting or deploying the curtain, since the blades are generally very long (up to several meters), and in addition to the influence of external forces such as wind, rain, and snow, this bolt needs to bear a large shear force and bending moment, and is prone to fatigue, wear, and even fracture after long-term use. In addition, due to the influence of dirt and bad weather (especially freezing), the bolt will bear greater resistance during the curtain operation, resulting in an additional overturning moment on the end component, further exacerbating the stress condition of the bolt. Once the bolt fails, the adjacent blades will become disengaged, seriously affecting the normal use of the shading system.

[0006] Another common connecting device adopts a hinged connection structure, such as that described in EP3388609B1. In this structure, the upstream end component is provided with two through holes, and the downstream end component is provided with one through hole. The connecting component includes two diverging pins that pass through these through holes for connection. However, this structure is complex in construction, increasing the manufacturing cost. Moreover, because there are multiple pins for perforation assembly, this structure has high requirements for assembly accuracy. This makes the manufacturing and maintenance of the connecting device and the curtain relatively difficult.

[0007] In summary, the existing blade connecting devices need to be further improved in terms of strength, reliability, assembly convenience, etc. The purpose of the present utility model is to provide a brand-new blade connecting device and its end components in view of the above problems. Summary of the Utility Model

[0008] The purpose of the present utility model is to provide a blade connecting device for a shielding system with a simple structure, convenient assembly, and reliable force transmission, so as to overcome the above-mentioned deficiencies in the prior art.

[0009] To achieve this purpose, the present utility model adopts the following technical solutions:

[0010] A connecting device for connecting an upstream blade and a downstream blade in a shielding system, the connecting device comprising:

[0011] - An upstream end component configured to cooperate with the upstream blade and having a first receiving component;

[0012] - A downstream end component configured to cooperate with the downstream blade and having a second receiving component;

[0013] - A connecting component configured to connect the upstream end component and the downstream end component;

[0014] Wherein, the connecting component includes a clip in the shape of a safety pin, the clip includes two legs, wherein the first leg of the clip is configured to sequentially pass through the first receiving component and the second receiving component, and expose its end after passing through; the second leg of the clip has a locking portion at its end and is configured to lock with the end of the first leg.

[0015] According to the connecting device of the present utility model, rapid locking connection and disassembly of the upstream and downstream end components for the upstream and downstream blades are realized, and at the same time, it has high connection strength and reliability, making the installation operation simple and convenient.

[0016] Optionally, the first receiving member has a first receiving through-hole; the second receiving member has a second receiving through-hole, and the first leg of the clip is configured to pass through the first receiving through-hole and the second receiving through-hole. This can effectively guide the insertion of the clip and restrict its movement, making the assembly of the connecting device more precise and reliable. At the same time, the cooperation between the receiving through-hole and the first leg can also play a good role in installation positioning and guiding.

[0017] Furthermore, the cross-sections of the upstream receiving through-hole and the downstream through-hole can be circular or elliptical, which can achieve the best fit between the first leg and the through-hole, reduce the assembly error, and improve the connection accuracy and stability. The circular cross-section also has the advantages of simple processing and low cost.

[0018] Optionally, the upstream end member has a lower connecting edge, and the first receiving member protrudes from the lower connecting edge; the downstream end member has an upper connecting edge, and the second receiving member protrudes from the upper connecting edge; wherein, the lower connecting edge, the upper connecting edge, the first receiving member and the second receiving member are configured to have complementary shapes. By reasonably designing the lower connecting edge of the upstream end member, the upper connecting edge of the downstream end member and the two receiving members to have complementary shapes, precise positioning and tight fitting can be achieved when the upstream and downstream end members are connected, improving the integrity and aesthetics of the connection. At the same time, this complementary structure also helps to improve the connection strength and stability.

[0019] Optionally, the first leg and the second leg are arranged substantially parallel. This can minimize the overall size of the clip while ensuring connection reliability, save assembly space, and make the structure of the connecting device more compact. The parallel design also makes the forces on the two legs more uniform, which is beneficial to improving the connection strength.

[0020] Optionally, the locking portion has a hook shape. Its unique geometric structure enables it to reliably engage with the end of the first leg after the first leg passes through the receiving member, preventing the clip from accidentally falling off. At the same time, the hook-shaped locking portion is also convenient for disassembly and separation, and it is easy to manufacture and has high strength itself.

[0021] Optionally, the clip is integrally formed of an elastic material. Manufacturing the clip from an elastic material through an integral forming process can endow the clip with good elastic deformation ability, which can not only achieve a tight fit with the receiving member but also facilitate disassembly. Especially when the end of the first leg passes through the first and second receiving members, there is no lateral squeezing force between the first and second legs so that their ends are separated from each other. When the end of the first leg emerges after passing through, there is a lateral squeezing force between the first and second legs, so that the end of the first leg contacts the locking portion of the second leg and is locked under the action of the elastic restoring force.

[0022] Optionally, each of the upstream end component and the downstream end component includes a joint portion that matches the shape of the blade of the shielding system. A seamless docking and a firm connection between the end component and its respective blade can be achieved, ensuring the consistency and aesthetics of the overall appearance of the shielding system. At the same time, the matching joint surface can also effectively improve the reliability and stability of the connection.

[0023] Optionally, the upstream end component and the downstream end component each have their own quick positioning components to facilitate temporarily fixing the relative positions of the upstream segment component and the downstream segment component, such that the first leg is configured to be able to pass through the first receiving component and the second receiving component. For example, the quick positioning components include a positioning pin provided on the upstream segment component and a positioning hole provided on the downstream segment component that cooperates with the positioning pin. By respectively providing matching quick positioning components such as positioning pins and positioning holes on the upstream and downstream end components, the relative positions of the upstream and downstream end components can be temporarily fixed by using the quick positioning components before the clip is inserted into the receiving component, thereby facilitating the smooth insertion of the clip, effectively improving the assembly efficiency, and reducing the assembly difficulty.

[0024] The present utility model also relates to a blade assembly for a shielding system, including at least two blades and the connecting device according to the present utility model as described above. The blade assembly according to the present utility model has significant advantages such as a compact structure, reliable connection, convenient assembly, and consistent appearance, and can effectively improve the overall performance and quality of the shielding system.

[0025] In summary, by adopting the connecting device of the present utility model, the reliability and flexibility can be significantly improved, which is beneficial to the improvement of the overall performance of the shielding system. The blade assembly of the present utility model has a compact structure and smooth movement, is convenient for manual or electric control, and can flexibly adjust the shielding area and angle as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 is a perspective view of a blade assembly of a shielding system according to an embodiment of the present utility model.

[0028] Figure 2 is Figure 1 a perspective view of the connecting device in the shown blade assembly and a partial enlarged view of the upstream end component, the downstream end component, and the connecting component.

[0029] Figure 3 is Figure 1 A perspective view of the upstream end component of the connecting device in the blade assembly shown.

[0030] Figure 4 is Figure 3 A perspective view of the assembly of the upstream end component shown and its corresponding blade.

[0031] Figure 5 is Figure 1 A perspective view of the exemplary connecting component 3 of the connecting device in the blade assembly shown.

[0032] Figure 6 A perspective view and a partial cross-sectional view of the connecting device according to the present utility model. Detailed implementation manners

[0033] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0034] As Figures 1 - 6 shown, the present embodiment provides a blade assembly of a shielding system according to the present utility model, which includes a connecting device for connecting the upstream blade 5 and the downstream blade 4 of the curtain in the building shielding system. Among them, the connecting device includes an upstream end component 1, a downstream end component 2, and a connecting component 3.

[0035] The upstream end component 1 includes a main body 13 and an upstream blade engaging portion 14. The main body 13 has an upper connecting edge (upper edge) and a lower connecting edge (lower edge), and a first receiving member 11, wherein the first receiving member 11 protrudes from the lower connecting edge of the main body 13. The first receiving member 11 may have a first receiving through hole at its central position, wherein the cross-section of the through hole may be circular or elliptical. The upstream blade engaging portion 14 is located between the upper connecting edge and the lower connecting edge and protrudes laterally from the main body. For example, it has the form of a plug piece and has a complementary shape to the groove at the end of the upstream blade 5, so as to be inserted into the end of the upstream blade for fixing with the upstream blade 5.

[0036] The downstream end component 2 is substantially similar to the upstream end component 1 and includes a main body 23 and a downstream blade engaging portion 24. The main body 23 also has its upper connecting edge (upper edge) and lower connecting edge (lower edge), and a second receiving member 21, wherein the second receiving member 21 protrudes from the upper connecting edge of the main body 23. The second receiving member 11 may have a second receiving through hole at its central position, wherein the cross-section of the through hole may be circular or elliptical. The downstream blade engaging portion 24 is located between the upper connecting edge and the lower connecting edge of the main body 23 and protrudes laterally from the main body 23. For example, it has the form of a plug piece and has a complementary shape to the groove at the end of the downstream blade 4, so as to be inserted into the end of the downstream blade for fixing with the downstream blade 4.

[0037] Preferably, the lower connecting edge, the upper connecting edge, the first receiving member 11 and the second receiving member 21 are configured to have complementary shapes.

[0038] Preferably, in the assembled state, the lower connecting edge of the main body 13 of the upstream end member 1 can be close to or abutted against the upper connecting edge of the main body 23 of the downstream end member 2, while the first receiving member 11 can also be aligned close to or abutted against the second receiving member 21 in the longitudinal direction perpendicular to the upstream and downstream directions, for example, so as to facilitate the coaxial alignment of the first and second receiving through-holes.

[0039] In this embodiment, both the upstream end member 1 and the downstream end member 2 can be made of a metal material, which has high strength and corrosion resistance and is suitable for various indoor and outdoor environments. However, the present invention is not limited thereto, and other suitable materials such as engineering plastics and composite materials can also be used.

[0040] The connecting member 3 of this embodiment is a clip in the shape of a safety pin, which can be integrally formed of an elastic material, for example, made of an elastic steel wire, and is integrally U-shaped, including two legs 31 and 32 that can be parallel to each other and a bent section connecting the two. Among them, the length of the first leg 31 is greater than that of the second leg 32. In the assembled state, the first leg 31 sequentially passes through the first receiving member 11 of the upstream end member 1 and the second receiving member 21 of the downstream end member 2, and its end portion is exposed outside after passing through. The end portion of the second leg 32 has a locking portion 33, for example, in the shape of a hook or other lockable shape. When the end portion of the first leg 31 is exposed after passing through the first receiving member 11 and the second receiving member 21, the locking portion 33 can lock with the exposed end portion, for example, by the hook-shaped end locking portion 33 of the second leg 32 hooking the exposed end portion of the first leg 31 for locking. Thus, the upstream end member 1 and the downstream end member 2 are hingedly connected to each other and can rotate relative to each other with the first leg as the rotation axis. Preferably, the locking portion can achieve detachable (unlockable) locking to facilitate the disassembly of the connecting device. For example, by unlocking the locking portion 33, it is disengaged from the exposed end portion of the first leg 31, so that the end portions of the two legs are separated, and the first leg 31 can be withdrawn from passing through the first receiving member 11 and the second receiving member 21, so that the upstream end member 1 and the downstream end member 2 are separated from each other for disassembly.

[0041] Preferably, for facilitating the alignment of the first receiving member 11 and the second receiving member 21 and the passing of the first leg 31 of the connecting member 3, the upstream end member 1 and the downstream end member 2 have respective quick positioning members (not shown) to facilitate temporarily fixing the relative positions of the upstream segment member 1 and the downstream segment member 2 for alignment, so that the first leg 31 can smoothly pass through the first receiving member 11 and the second receiving member 21.

[0042] Preferably, the upper connecting edge of the upstream end component 1 protrudes to form a third receiving component 10, which is arranged in a similar form to the second receiving component 21 of the downstream end component 2. At the same time, the lower connecting edge of the downstream end component 2 protrudes to form a fourth receiving component 20, which is arranged in a similar form to the first receiving component 11 of the upstream end component 1. The third receiving component 10 and the fourth receiving component 20 can be respectively connected to the corresponding receiving components of the other upstream and downstream end components in a similar manner through the connecting component 3 according to the present utility model, so as to form a continuous structure for forming a complete building shielding system with their respective blades.

[0043] Based on the above embodiments, those skilled in the art can also make various modifications or equivalent replacements to the present utility model, but these improvements and optimizations do not depart from the spirit and scope of the present utility model. For example, an anti-disengagement structure can be provided on the connecting component 3 to prevent the hook from disengaging during locking, so as to further improve the connection reliability; a gasket can be added between the end component and the blade to improve airtightness, sound insulation, etc. In short, any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, directly or indirectly applied in the relevant technical fields, is similarly included in the patent protection scope of the present utility model.

[0044] The above embodiments are only used to illustrate the present utility model and do not limit the technical solutions described in the present utility model. Although this specification has described the present utility model in detail with reference to the above respective embodiments, the present utility model is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present utility model; and all technical solutions and their improvements that do not depart from the spirit and scope of the utility model are covered by the scope of the claims of the present utility model.

Claims

1. A connecting device for connecting an upstream blade (5) and a downstream blade (4) in a shielding system, the connecting device comprising: An upstream end member (1) configured to cooperate with the upstream blade (5) and having a first receiving member (11); A downstream end member (2) configured to cooperate with the downstream blade (4) and having a second receiving member (21); A connecting member (3) configured to connect the upstream end member (1) and the downstream end member (2); Wherein the connecting member (3) includes a clip in the shape of a pin, the clip including two legs (31, 32), wherein the first leg (31) of the clip is configured to sequentially pass through the first receiving member (11) and the second receiving member (21) and expose its end after passing through; the second leg (32) of the clip has a locking portion (33) at its end and is configured to lock with the end of the first leg (31) of the clip.

2. The connecting device according to claim 1, wherein The first receiving member has a first receiving through-hole; the second receiving member has a second receiving through-hole, and the first leg of the clip is configured to pass through the first receiving through-hole and the second receiving through-hole.

3. The connecting device according to claim 2, characterized in that, The cross-sections of the first receiving through-hole and the second receiving through-hole are circular.

4. The connecting device according to claim 1, characterized in that, The upstream end member has a lower connecting edge, and the first receiving member projects from the lower connecting edge; the downstream end member has an upper connecting edge, and the second receiving member projects from the upper connecting edge; wherein the lower connecting edge, the upper connecting edge, the first receiving member and the second receiving member are configured to have complementary shapes.

5. The connecting device according to claim 1, characterized in that, The first leg and the second leg are arranged in parallel.

6. The connecting device according to claim 1, characterized in that, The locking portion has a hook shape.

7. The connecting device according to claim 1, characterized in that, The clip is integrally formed of an elastic material.

8. The connecting device according to claim 1, characterized in that, The upstream end member and the downstream end member each include a joint portion matching the shape of the shielding system blade.

9. The connecting device according to claim 1, characterized in that, The upstream end member and the downstream end member have respective quick positioning members to facilitate temporarily fixing the relative positions of the upstream end member and the downstream end member such that the first leg is configured to pass through the first receiving member and the second receiving member.

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