A collapsible screen device

Abstract

A foldable screen device comprises a support, a first soft magnetic strip and a screen; the support comprises a support strip, a connecting piece and a flexible connecting strip; the support strip is in multiple, and the multiple support strips are arranged in a stacked manner from top to bottom; the two ends of the support strip are respectively a hinged end and a movable end, the hinged ends of the multiple support strips are rotationally connected through the connecting piece, the flexible connecting strip is in multiple, and the movable ends of the adjacent two support strips are connected through the flexible connecting strip; the uppermost support strip and the lowermost support strip are respectively an upper support strip and a lower support strip, the upper support strip is provided with a first magnet at a position close to the movable end thereof, the lower support strip is provided with a second magnet, and the first magnet and the second magnet are magnetically attracted and fixed when the multiple support strips are rotated to an open state; the soft magnetic strip is continuously arranged along the movable ends of the multiple support strips, the outer edge of the screen is fixedly connected with a second soft magnetic strip, and the second soft magnetic strip is magnetically attracted and fixed with the first soft magnetic strip. Compared with the prior art, the screen device is convenient to replace the screen and reduces the space occupation.

Description

Technical Field

[0001] This utility model belongs to the technical field of screen device technology, specifically relating to a foldable screen device. Background Technology

[0002] As a core piece of equipment for particle size analysis and solid-liquid separation in laboratories, the basic structure of a sieve device typically consists of a rigid support and a sieve fixed to the support. The separation accuracy of the sieve is determined by its mesh size; different mesh sizes correspond to the screening requirements of materials with different particle size ranges.

[0003] Currently, the sieve devices widely used in laboratories typically employ fixed connections between the sieve and its support, such as welding, riveting, or bolting. This makes it difficult to easily replace the sieve once it is installed. To meet the needs of multiple sieve meshes, laboratories often need to configure separate sieve devices for each mesh size, which not only increases procurement costs but also occupies laboratory space. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a foldable screen device.

[0005] To achieve the above objectives, this utility model discloses a foldable screen device, including a support, a first soft magnetic strip, and a screen. The bracket includes support bars, connectors, and flexible connecting bars; There are multiple support bars, which are stacked one on top of the other; the two ends of the connecting bar are a hinged end and a movable end, and the hinged ends of the multiple support bars are rotatably connected together by the connecting member; there are multiple flexible connecting bars, and the movable ends of two adjacent support bars are connected by the flexible connecting bars. The uppermost support bar and the lowermost support bar are respectively the upper support bar and the lower support bar. The upper support bar is provided with a first magnet near its movable end, and the lower support bar is provided with a second magnet. When the multiple support bars are rotated to the open state, the first magnet and the second magnet are magnetically attracted and fixed. The first soft magnetic strip is continuously arranged along the movable ends of the multiple support strips, and the outer edge of the screen is fixedly connected to a second soft magnetic strip, which is magnetically attracted to the first soft magnetic strip.

[0006] Preferably, in the open state, the length of the flexible connecting strip is configured as a first distance, which is the distance between the connection positions of the flexible connecting strip and the corresponding two support strips.

[0007] Preferably, the middle position of the flexible connecting strip is fixedly connected to the first soft magnetic strip.

[0008] Preferably, the first soft magnetic strip is fixedly connected to the support strip and / or the flexible connecting strip.

[0009] Preferably, the movable ends of the upper support bar and the lower support bar extend outward, and after the upper support bar and the lower support bar are magnetically fixed, their movable ends form a handhold.

[0010] Preferably, each of the hinged ends of the multiple support bars is provided with a connecting through hole, and the connecting member is a bolt, which is fastened by a nut after passing through the connecting through holes of all the support bars.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the multiple support bars are rotated open. The upper and lower support bars are magnetically secured by magnets, and the upper and lower support bars are also connected by flexible connecting strips to maintain a stable state. The screen is then fixed to the support frame by the cooperation of its second soft magnetic strip with the first soft magnetic strip.

[0012] When it's necessary to replace the sieve with a different mesh size, simply remove the old sieve and magnetically attach the new one to the bracket. Replacement is convenient and can meet the needs of multiple sieve meshes. Since there's no need to configure an entire sieve assembly for each mesh size, and the bracket is rotatable, it can be folded when not in use, reducing the space occupied in the laboratory. Attached Figure Description

[0013] Figure 1 A front view of the foldable screen device according to an embodiment; Figure 2 This is a schematic diagram of the structure of the support in the deployed state as described in the embodiment. Figure 3 This is a sectional view of the upper and lower connecting strips; 100 bracket; 110 support bar; 111 hinged end; 112 movable end; 120 connector; 130 flexible connecting bar; 140 upper support bar; 141 first magnet; 150 lower support bar; 151 second magnet; First soft magnetic strip 200; Screen size 300; second soft magnetic strip size 310. Detailed Implementation

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] A foldable screen device, see [link / reference] Figures 1-3 It includes a support 100, a first soft magnetic strip 200, and a screen 300.

[0016] The bracket 100 includes support bars 110, connectors 120, and flexible connecting bars 130. The support bars 110 are long and thin, and there are multiple support bars 110 stacked vertically. The number of support bars 110 can be adjusted according to actual needs without affecting usability. Each support bar 110 has a hinged end 111 and a movable end 112 at both ends. The hinged ends 111 of multiple support bars 110 are rotatably connected together via connectors 120. There are multiple flexible connecting bars 130, and the movable ends 112 of every two adjacent support bars 110 are connected via flexible connecting bars 130.

[0017] The uppermost support bar 110 and the lowermost support bar 110 are respectively the upper support bar 140 and the lower support bar 150. The upper support bar 140 is provided with a first magnet 141 near its movable end 112, and the lower support bar 150 is provided with a second magnet 151. When the multiple support bars 110 are rotated to the open state, the first magnet 141 and the second magnet 151 magnetically attract and fix them together, thereby fixing the upper and lower magnetic bars together. The support bars 110 between the upper support bar 140 and the lower support bar 150 are connected by a flexible connecting bar 130, which also ensures a stable state.

[0018] The first soft magnetic strip 200 is continuously arranged along the movable ends 112 of multiple support strips 110. The outer edge of the screen 300 is fixedly connected to the second soft magnetic strip 310. The second soft magnetic strip 310 is magnetically attracted to the first soft magnetic strip 200, thereby fixing the screen 300 to the bracket 100.

[0019] When it is necessary to replace the sieve 300 with a different mesh size, simply remove the sieve 300 and magnetically attach the new sieve 300 to the bracket 100. Replacement is convenient and can meet the needs of multiple sieve meshes. Since there is no need to configure an entire sieve device for each mesh size, and the bracket 100 is rotatable, the bracket 100 can be folded when the sieve device is not in use, reducing the space occupied in the laboratory.

[0020] Since the support bars 110 are stacked, if the upper support bar 140 and the lower support bar 150 were straight, they would be staggered vertically and not easily magnetically secured. Therefore, the upper support bar 140 and the lower support bar 150 are designed as curved bars so that their movable ends 112 can abut together and be magnetically secured.

[0021] Alternatively, in this embodiment, the hinged ends 111 of multiple support bars 110 are provided with connecting through holes, and the aforementioned connecting member 120 is a bolt. After the bolt passes through the connecting through holes of all support bars 110, it is tightened by a nut. After the bolt and nut are connected, the nut is first tightened to a relatively loose state, and then the interactive ends of the upper support bar 140 and the lower support bar 150 are bent towards each other so that they are magnetically attracted and fixed together, and then the nut is tightened.

[0022] In this embodiment, the flexible connecting strip 130 is made of fabric, which is readily available and can be fixed to the support strip 110 using non-magnetic nails. When the bracket 100 is in the open state, the length of the flexible connecting strip 130 is configured as a first distance, which is the distance between the connection positions of the flexible connecting strip 130 and the corresponding two support strips 110. That is to say, when the bracket 100 is open, the support strips 110 between the upper support strip 140 and the lower support strip 150 can be connected and fixed by the flexible connecting strip 130 to avoid displacement or shaking during use.

[0023] In practice, after the flexible connecting strip 130 is straightened by the two adjacent support strips 110, its middle position is easily exposed in the screen 300. To avoid the flexible connecting strip 130 affecting the use of the screen 300, the middle position of the flexible connecting strip 130 is fixedly connected to the first soft magnetic strip 200, for example, by a non-magnetic nail. After the middle position of the flexible connecting strip 130 is fixed, it will not be exposed in the screen 300. After the screen 300 is connected to the bracket 100, the second soft magnetic strip 310 of the screen 300 can cover it.

[0024] In this embodiment, the movable ends 112 of the upper support bar 140 and the lower support bar 150 extend outward. After the upper support bar 140 and the lower support bar 150 are magnetically fixed, their movable ends 112 form a handhold, which makes it convenient for the user to hold and use.

[0025] The above description is only a preferred embodiment of the present utility model, and its structure is not limited to the shapes listed above. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foldable screen device, characterized in that: Includes a support frame, a first soft magnetic strip, and a screen; The bracket includes support bars, connectors, and flexible connecting bars; There are multiple support bars, which are stacked one on top of the other. Each support bar has a hinged end and a movable end at both ends. The hinged ends of the multiple support bars are rotatably connected together by the connector. There are multiple flexible connecting bars, and the movable ends of two adjacent support bars are connected by the flexible connecting bars. The uppermost support bar and the lowermost support bar are respectively the upper support bar and the lower support bar. The upper support bar is provided with a first magnet near its movable end, and the lower support bar is provided with a second magnet. When the multiple support bars are rotated to the open state, the first magnet and the second magnet are magnetically attracted and fixed. The first soft magnetic strip is continuously arranged along the movable ends of the multiple support strips, and the outer edge of the screen is fixedly connected to a second soft magnetic strip, which is magnetically attracted to the first soft magnetic strip.

2. The foldable screen device according to claim 1, characterized in that: In the open state, the length of the flexible connecting strip is configured as a first distance, which is the distance between the connection positions of the flexible connecting strip and the corresponding two support strips.

3. The foldable screen device according to claim 1, characterized in that: The flexible connecting strip is fixedly connected to the first soft magnetic strip at its middle position.

4. The foldable screen device according to claim 1, characterized in that: The first soft magnetic strip is fixedly connected to the support strip and / or the flexible connecting strip.

5. The foldable screen device according to claim 1, characterized in that: The movable ends of the upper support bar and the lower support bar extend outwards, and after the upper support bar and the lower support bar are magnetically fixed, their movable ends form a handhold.

6. The foldable screen device according to claim 1, characterized in that: Each of the hinged ends of the multiple support bars is provided with a connecting through hole, and the connecting component is a bolt. The bolt passes through the connecting through holes of all the support bars and is then tightened by a nut.

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