Anti-falling device for snap-fit shutter

Abstract

The present application relates to an anti-falling device for a snap-fit shutter, comprising a main frame body, pressing tongues, and a first connecting member. The pressing tongues have first pressing tongue surfaces; the first connecting member is used for fixedly connecting the main frame body to a support fixing base; and when the main frame body is fixedly connected to the support fixing base by means of the first connecting member, the first pressing tongue surfaces abut against the sides of corresponding louvers facing away from a louvre support. According to embodiments of the present application, original louvres do not need to be replaced, the original louvres can be directly reinforced, and the overall costs are relatively low; the normal production activities of workshops are not affected; a plurality of louvres can be reinforced at the same time, there is no need to spend a lot of manpower to comprehensively inspect the louvres, and the manpower can be saved; moreover, a worker can finish the mounting of the anti-falling device of the snap-fit shutter simply on the outer side of louvers, thereby further reducing the requirements on manpower for reinforcing the louvers.

Description

Anti-fall device for snap-on shutters

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application 202420358805.2, filed on February 27, 2024, entitled “Anti-fall device for snap-on blinds,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of doors and windows, and in particular to an anti-falling device for snap-on blinds. Background Art

[0004] The snap-on blinds generally include blinds and blind brackets, wherein the blind brackets are fixed to the bracket fixing seat by welding or bolt connection, and the bracket fixing seat is fixed to the window frame. The upper and lower sides of the blinds are respectively provided with slots for snapping into the blind brackets. Based on the convenience of installation, the depth of the upper slot is shallower than that of the lower slot, resulting in a weaker clamping effect between the upper slot and the blind bracket. The blinds are affected by eddy current vibration, strong wind and impact of foreign objects for a long time, and the upper slot is easy to slip off the blind bracket; in addition, since the lower slot is deeper, the lower slot is prone to improper installation, and the lower slot is also at risk of slipping off the blind bracket.

[0005] Fresh air louvers are a type of ventilation system, and snap-on louvers are a type of fresh air louver. Their primary function is to introduce fresh air or remove waste gas and heat, maintaining a clean air quality within the building. Large domestic factories, office buildings, and other structures often feature fresh air louvers, which have an average service life of fifteen years. For some long-operating factories, the building's lifespan far exceeds the louver's lifespan.

[0006] When the working time of the fresh air louvers is close to their design life, replacing them completely will incur a large cost and affect the normal production activities of some workshops.

[0007] Currently, damaged louvers are typically pulled back manually or secured with wire to prevent them from falling. However, these are only temporary solutions and require extensive manpower to thoroughly inspect the louvers. Furthermore, because the louver slots are located on the inside of the louvers, workers cannot directly observe whether the slots are slipping from the outside, further increasing the workload of inspecting for louver slippage.

[0008] Utility Model Content

[0009] The embodiment of the present application provides an anti-falling device for a snap-on blind, which can reinforce the blinds and reduce the risk of the blinds slipping off the blinds bracket and falling. The overall cost is relatively small and will not affect the normal production activities of each workshop. It does not require a large amount of manpower to conduct a comprehensive inspection of the blinds, which can save manpower. The staff can complete the installation of the anti-falling device for the snap-on blind only on the outside of the blind, thereby further reducing the manpower demand for reinforcing the blinds.

[0010] In the first aspect, an embodiment of the present application provides a falling prevention device for a snap-on blind, which includes: a main frame having a first side surface; a pressure tongue protruding from the first side surface, the pressure tongue being fixedly connected to the main frame, the pressure tongue having a first pressure tongue surface, the first pressure tongue surface and the first side surface having a preset angle; a plurality of pressure tongues are spaced apart along a first direction, and a first preset distance exists between two adjacent pressure tongues; a first connecting member is used to fix the main frame to the bracket fixing seat, and when the main frame is fixed to the bracket fixing seat through the first connecting member, the first pressure tongue surface is tightly pressed against the side of the corresponding blind facing away from the blind bracket.

[0011] In some embodiments, the depressing tongue further has a second depressing tongue surface. Along the first direction, among two adjacent depressing tongues, the second depressing tongue surface of one depressing tongue is arranged opposite to the first depressing tongue surface of the other depressing tongue.

[0012] In some embodiments, two or more tongue depressors are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

[0013] In some embodiments, the first connecting member is a self-drilling screw, and the main frame is provided with a mounting hole for the threaded section of the self-drilling screw to pass through.

[0014] In some embodiments, a plurality of self-drilling screws are spaced apart along the first direction.

[0015] In some embodiments, the anti-falling device of the snap-on shutter further includes a second connecting member for fixing the pressing tongue to the corresponding shutter blade.

[0016] In some embodiments, at least a portion of the pressing tongue is provided with a connecting hole, the connecting hole intersects with the first pressing tongue surface, and the second connecting member is a blind rivet passing through the connecting hole.

[0017] In some embodiments, the main frame also includes a second side surface arranged opposite to the first side surface. Along the first direction, the main frame has an operating hole between two adjacent pressing tongues, and the two opening ends of the operating hole are respectively located on the first side surface and the second side surface.

[0018] In some embodiments, the first tongue depressing surface is planar.

[0019] In some embodiments, the main frame and the tongue depressor are integrally formed.

[0020] In some embodiments, the main frame and the pressing tongue are sheet metal parts stamped from the same strip of sheet material.

[0021] The anti-falling device of the snap-on blinds of the embodiment of the present application includes a main frame, a depressing tongue and a first connecting member, wherein the main frame has a first side surface; the depressing tongue is protruding from the first side surface, the depressing tongue has a first depressing tongue surface, and the first depressing tongue surface has a preset angle with the first side surface; along the first direction, a plurality of depressing tongues are spaced apart, and a first preset distance is provided between two adjacent depressing tongues; the first connecting member is used to fix the main frame to the bracket fixing seat, and when the main frame is fixed to the bracket fixing seat through the first connecting member, the first depressing tongue surface is tightly against the side of the corresponding blind facing away from the blind bracket. When designing this device, the preset angle is set according to the inclination angle of the blind to be reinforced, and the first preset distance is set according to the distance between two adjacent blinds to be reinforced, so that after the main frame is fixed to the bracket fixing seat through the first connecting member, the first depressing tongue surface of each depressing tongue can be tightly against the side of the corresponding blind facing away from the blind bracket. By adding anti-fall devices to the clip-on blinds to reinforce the blinds, the original blinds can be directly reinforced without having to replace them, so the overall cost is relatively small; the installation of anti-fall devices to the clip-on blinds does not require the removal of the original blinds, so it will not affect the normal production activities of each workshop; by adding anti-fall devices to the clip-on blinds, multiple blinds can be reinforced at the same time, so there is no need to spend a lot of manpower to conduct a comprehensive inspection of the blinds, which can save manpower; and the staff can complete the installation of the anti-fall devices to the clip-on blinds only on the outside of the blinds, so the demand for manpower for reinforcing the blinds can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0023] FIG1 is a schematic diagram of an exploded structure of a snap-on shutter in the prior art;

[0024] FIG2 is a schematic diagram of the cross-sectional structure of louvers in the prior art;

[0025] FIG3 is a schematic structural diagram of a buckle-type shutter anti-falling device provided in an embodiment of the present application;

[0026] FIG4 is a schematic diagram of a partial structure of a buckle-type blind anti-falling device provided in an embodiment of the present application from one perspective;

[0027] FIG5 is a schematic diagram of a partial structure of the anti-falling device of the snap-on blind provided in an embodiment of the present application from another perspective;

[0028] FIG6 is a schematic diagram of a partial structure of a snap-on blind anti-falling device provided in an embodiment of the present application being assembled to the snap-on blind;

[0029] FIG7 is a schematic diagram of the anti-falling device of the snap-on shutter and the explosion structure of the snap-on shutter provided in an embodiment of the present application.

[0030] In the figure: 1. Bracket fixing seat; 2. Louver bracket; 3. Louver; 301. Slot; 4. Main frame; 401. Mounting hole; 402. Second side; 403. Operating hole; 404. First side; 5. Depressing tongue; 501. Second depressing tongue surface; 502. First depressing tongue surface; 503. Connecting hole; 6. Window frame; 7. First connecting member; 8. Second connecting member. DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0033] FIG1 is a schematic diagram of the exploded structure of a snap-on louver in the prior art; FIG2 is a schematic diagram of the cross-sectional structure of a louver blade in the prior art.

[0034] As shown in Figures 1 and 2, currently, snap-on blinds generally include blinds 3 and blind brackets 2, wherein the blind brackets 2 are fixed to the bracket mounting base 1 by welding or bolting, and the bracket mounting base 1 is fixed to the window frame 6. The upper and lower sides of the blinds are respectively provided with a snap-on slot 301 for snapping onto the blind bracket 2. Based on the perspective of convenient installation, the depth of the upper snap-on slot is shallower than that of the lower snap-on slot, resulting in a weaker snap-on effect between the upper snap-on slot and the blind bracket 2. The blinds are affected by eddy current vibration, strong winds, and foreign object impacts for a long time, and the upper snap-on slot is prone to slipping off the blind bracket 2. In addition, because the lower snap-on slot is deeper, it is easy for the lower snap-on slot to be installed improperly, and thus there is a risk of the lower snap-on slot slipping off the blind bracket 2. Fresh air blinds are a type of equipment in ventilation systems, and snap-on blinds are a type of fresh air blinds.

[0035] The inventors of this application have found that when the working time of the fresh air louvers is close to their design life, a complete replacement of the louvers will incur a large cost and affect the normal production activities of some workshops. Currently, for damaged louvers, manual pulling back or fixing with wire is generally adopted to prevent the louvers from falling. However, the above is only a temporary remedial measure, and a large amount of manpower is required to conduct a comprehensive inspection of the louvers. In addition, since the slots of the louvers are all located on the inner side of the louvers, the staff cannot directly observe whether the slots of the louvers are slipping from the outside of the louvers, which further increases the labor intensity of the staff when checking whether the louvers are slipping. The inner side of the louvers refers to the side of the louvers facing the louver bracket 2, and the outer side of the louvers refers to the side of the louvers facing away from the louver bracket 2.

[0036] In order to solve the problems in the prior art, the present invention provides a buckle-type blind anti-falling device, which is described in detail below with reference to the accompanying drawings.

[0037] Figure 3 is a structural schematic diagram of the anti-falling device of the snap-on blinds provided in an embodiment of the present application; Figure 4 is a partial structural schematic diagram of the anti-falling device of the snap-on blinds provided in an embodiment of the present application from one perspective; Figure 5 is a partial structural schematic diagram of the anti-falling device of the snap-on blinds provided in an embodiment of the present application from another perspective; Figure 6 is a partial structural schematic diagram of the anti-falling device of the snap-on blinds provided in an embodiment of the present application being assembled to the snap-on blinds; Figure 7 is a schematic diagram of the explosion structure of the anti-falling device of the snap-on blinds and the snap-on blinds provided in an embodiment of the present application.

[0038] Referring to Figures 3 to 7, an embodiment of the present application provides a snap-on blind anti-falling device, comprising a main frame 4, a depressing tongue 5, and a first connecting member 7. The main frame 4 has a first side surface 404; the depressing tongue is protruding from the first side surface 404, is fixedly connected to the main frame 4, and has a first depressing tongue surface 502, with the first depressing tongue surface 502 and the first side surface 404 forming a preset angle; a plurality of depressing tongues are spaced apart along a first direction, with a first preset distance between two adjacent depressing tongues; the first connecting member 7 is used to secure the main frame 4 to the bracket fixing seat 1. When the main frame 4 is secured to the bracket fixing seat 1 via the first connecting member 7, the first depressing tongue surface 502 abuts against the side of the corresponding louver 3 facing away from the louver bracket 2. When designing this device, a preset angle is set according to the inclination angle of the louver to be reinforced, and a first preset distance is set according to the distance between two adjacent louvers to be reinforced, so that after the main frame 4 is fixed to the bracket fixing seat 1 through the first connecting member 7, the first tongue pressing surface 502 of each tongue can be tightly pressed against the side of the corresponding louver facing away from the louver bracket 2.

[0039] The installation process of the anti-falling device of the snap-on blinds is as follows: when the working time of the fresh air blinds is close to their design life, the main frame 4 is placed on the outside of the blinds to be reinforced, so that the first side surface 404 faces the blinds and each first pressing tongue surface 502 faces the outside of the corresponding blinds, and the main frame 4 is fixed to the bracket fixing seat 1 through the first connecting member 7. During this process, each first pressing tongue surface 502 moves in the direction close to the corresponding blinds until each first pressing tongue surface 502 is tightly against the side of the corresponding blinds facing away from the blinds bracket 2, and applies a pressing force to the corresponding blinds. The direction of the above-mentioned pressing force is from each blind to the direction of the corresponding blind bracket 2, thereby reinforcing the blinds and reducing the risk of the blinds slipping off the blind bracket 2 and falling.

[0040] By adding anti-fall devices to the clip-on blinds to reinforce the blinds, the original blinds can be directly reinforced without having to replace them, so the overall cost is relatively small; the installation of anti-fall devices to the clip-on blinds does not require the removal of the original blinds, so it will not affect the normal production activities of each workshop; by adding anti-fall devices to the clip-on blinds, multiple blinds can be reinforced at the same time, so there is no need to spend a lot of manpower to conduct a comprehensive inspection of the blinds, which can save manpower; and the staff can complete the installation of the anti-fall devices to the clip-on blinds only on the outside of the blinds, so the demand for manpower for reinforcing the blinds can be further reduced.

[0041] As shown in Figures 3 to 5, in some embodiments, the tongue depressor further has a second tongue depressing surface 501. Along the first direction, of the two adjacent tongue depressors, the second tongue depressing surface 501 of one tongue depressor is arranged opposite to the first tongue depressing surface 502 of the other tongue depressor. For the two adjacent tongue depressors, when the louver blades that should be pressed by the first tongue depressing surface 502 of the upper tongue depressor fall due to an accident, they will be received by the second tongue depressing surface 501 opposite to the first tongue depressing surface 502, thereby further reducing the risk of the louver blades falling directly to the ground and injuring people walking on the ground. It can be seen that this device can not only directly reinforce the louver blades through the first tongue depressing surface 502, but also play a receiving role for the louver blades through the second tongue depressing surface 501, which can serve as a double insurance to prevent the louver blades from falling to the ground.

[0042] As shown in Figures 3 to 5, in some embodiments, two or more depressing tongues are spaced apart along the second direction, and the second direction is perpendicular to the first direction. In other words, the depressing tongues are arranged in an array along both the first and second directions. Under the premise that the louvers are subjected to the same pressing force, compared to a single depressing tongue pressing against the louver, multiple depressing tongues arranged along the second direction simultaneously pressing against the same louver can make the force on the louver relatively uniform. In addition, for wider ventilation windows, it is necessary to provide multiple louvers distributed successively along the length direction of each louver. As shown in Figure 7, when the main frame 4 is located near the junction area of ​​two adjacent louvers distributed along the length direction of the louver, a portion of the multiple depressing tongues arranged along the second direction press against one of the louvers, and another portion can press against the other louver. Therefore, through the above-mentioned depressing tongue structure and installation method, the anti-falling device of the same snap-on louver can simultaneously reinforce two adjacent louvers distributed along the length direction of the louver, and can minimize the impact of this device on the overall appearance of the snap-on louver.

[0043] As shown in Figures 3 to 7, in some embodiments, the first connecting member 7 is a self-drilling screw, and the main frame 4 is provided with a mounting hole 401 for the threaded section of the self-drilling screw to pass through. The self-drilling screw has a self-drilling head at the front end. When using the self-drilling screw, drilling, tapping, and tightening operations can be completed directly on the bracket fixing base 1 at one time, greatly reducing the installation time of the main frame 4.

[0044] In some embodiments, a plurality of self-drilling screws are arranged at intervals along the first direction. By arranging a plurality of self-drilling screws, the connection strength between the main frame 4 and the bracket fixing seat 1 can be strengthened.

[0045] As shown in FIG6 , in some embodiments, the anti-falling device of the snap-on shutter further includes a second connecting member 8 for fixing the pressing tongue to the corresponding shutter blade, thereby strengthening the connection strength between the pressing tongue and the corresponding shutter blade.

[0046] As shown in Figures 5 and 6, in some embodiments, at least part of the pressing tongue is provided with a connecting hole 503, and the connecting hole 503 intersects with the first pressing tongue surface 502. The second connecting member 8 is a blind rivet that passes through the connecting hole 503. The staff can carry out construction on one side of the louver. The blind rivet has a wide riveting range, fast installation, large clamping force, good shock resistance, flat rivet fracture, and strong locking ability.

[0047] As shown in Figures 4 and 5, in some embodiments, the main frame 4 further includes a second side surface 402 disposed opposite to the first side surface 404. Along the first direction, the main frame 4 defines an operating hole 403 between two adjacent pressing tongues, with the two open ends of the operating hole 403 being located on the first side surface 404 and the second side surface 402, respectively. The provision of the operating hole 403 allows workers to install blind rivets only on the outer sides of the louver blades, facilitating operation.

[0048] As shown in FIG5 , in some embodiments, the first tongue-pressing surface 502 is flat, which can increase the contact area between the first tongue-pressing surface 502 and the corresponding louver blades, and ensure that the louver blades are subjected to relatively uniform force under the premise that the louver blades are subjected to the same pressing force.

[0049] As shown in FIG. 3 to FIG. 5 , in some embodiments, the main frame 4 and the pressing tongue are integrally formed, so that the main frame 4 and the louver blades have a higher connection strength.

[0050] As shown in Figures 3 to 5, in some embodiments, the main frame 4 and the pressing tongue are sheet metal parts stamped from the same strip of plate, which is easy to process. After the strip of plate is stamped, a punching hole will be formed in the pressing tongue at its original position. The punching hole can be used as an operating hole 403 to facilitate the staff to install the blind rivet.

[0051] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A buckle-type shutter anti-falling device, wherein: include: A main frame having a first side surface; A depressing tongue is protruding from the first side surface, the depressing tongue is fixedly connected to the main frame, the depressing tongue has a first depressing tongue surface, and the first depressing tongue surface forms a preset angle with the first side surface; along the first direction, a plurality of the depressing tongues are spaced apart, and a first preset distance is formed between two adjacent depressing tongues; The first connecting member is used to fix the main frame to the bracket fixing seat, When the main frame is fixedly connected to the bracket fixing seat through the first connecting member, the first tongue pressing surface is tightly pressed against the side of the corresponding louver facing away from the louver bracket.

2. The anti-falling device of the snap-on blind according to claim 1, wherein: The tongue depressor further comprises a second tongue depressor surface. Along the first direction, of the two adjacent depressing tongues, the second depressing surface of one depressing tongue is arranged opposite to the first depressing surface of the other depressing tongue.

3. The anti-falling device of the snap-on blind according to claim 1, wherein: The two or more tongue depressors are spaced apart along a second direction, and the second direction is perpendicular to the first direction.

4. The anti-falling device of the snap-on blind according to claim 1, wherein: The first connecting member is a self-drilling screw, and the main frame is provided with a mounting hole for the threaded section of the self-drilling screw to pass through.

5. The anti-falling device of the snap-on blind according to claim 4, wherein: A plurality of self-drilling screws are arranged at intervals along the first direction.

6. The anti-falling device of the snap-on blind according to claim 1, wherein: A second connecting piece is also included for fixing the pressing tongue to the corresponding louver.

7. The anti-falling device of the snap-on blind according to claim 6, wherein: At least a portion of the pressing tongue is provided with a connecting hole, the connecting hole intersects with the first pressing tongue surface, and the second connecting member is a blind rivet passing through the connecting hole.

8. The anti-falling device of the snap-on blind according to claim 7, wherein: The main frame further includes a second side surface disposed opposite to the first side surface. Along the first direction, the main frame is provided with an operating The operation hole has two opening ends located on the first side surface and the second side surface respectively.

9. The anti-falling device of the snap-on blind according to claim 1, wherein: The first tongue depressing surface is flat.

10. The anti-falling device of the snap-on blind according to claim 1, wherein: The main frame and the tongue pressing member are integrally formed.

11. The anti-falling device of the snap-on blind according to claim 10, wherein: The main frame and the pressing tongue are sheet metal parts formed by stamping the same strip of sheet metal.

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