Filter screen anti-falling device

Abstract

This utility model provides a filter screen anti-fall device, relating to the field of filter screen technology, including a range hood. The range hood has an inclined design, with a placement groove at the bottom. A frame is slidably engaged in the placement groove, and a replaceable filter screen is bonded to the top of the frame. Multiple positioning arcs are provided on the front and rear sides of the frame, close to the left side. The top of the positioning arcs passes through the replaceable filter screen. After the replaceable filter screen is replaced, the frame and the replaceable filter screen are inserted into the placement groove, and the frame is quickly and conveniently fixed and positioned by a clamping mechanism. At the same time, the stability of the frame is improved by the cooperation of multiple fixing methods inside the clamping mechanism. Even when the range hood is running at high wind speed or used for a long time, the frame and the replaceable filter screen can still remain stable, ensuring good smoke extraction effect and preventing any safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of filter screen technology, and in particular to a filter screen anti-drop device. Background Technology

[0002] The range hood filter is the core component of the kitchen fume purification system. Its main function is to intercept the fumes, particulate matter, and grease generated during cooking, preventing them from entering the fan and flue, thereby extending the equipment's lifespan, improving exhaust efficiency, and reducing indoor and outdoor air pollution.

[0003] To facilitate cleaning, range hood filter assemblies are usually designed as a combination of a frame and a replaceable filter. Users can clean the filter simply by removing it. Since the filter assembly needs to be replaced and cleaned regularly, it is equipped with a quick-change mechanism to improve ease of operation.

[0004] However, the quick-change mechanism may cause unstable connections due to design flaws. Especially after the range hood has been running at high speed or for a long time, the filter components may become loose or even fall off, which not only affects the smoke extraction effect but may also cause safety hazards.

[0005] Therefore, it is necessary to provide a filter screen anti-fall device to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a filter screen anti-fall device.

[0007] This utility model provides a filter screen anti-fall device, including a range hood, and the range hood is designed with an inclination. The bottom of the range hood is provided with a placement groove, and a frame is slidably engaged in the placement groove. A replaceable filter screen is glued to the top of the frame. Multiple positioning arc holes are provided on the front and rear sides of the frame close to the left side, and the top of the positioning arc holes passes through the replaceable filter screen.

[0008] The front and rear sides of the placement slot are symmetrically equipped with clamping mechanisms for locking the frame.

[0009] Preferably, the clamping mechanism includes a clamping block, a positioning protrusion, a throttle, a bidirectional screw, and a locking spring. A U-shaped groove is formed inside the range hood on the left side of the placement slot. Both ends of the U-shaped groove communicate with the placement slot. The clamping block is symmetrically slidably engaged within the U-shaped groove. The positioning protrusion is located on the side of the clamping block near the positioning arc, and engages with the positioning arc. The throttle is rotatably connected to the rear side of the range hood, with its front end penetrating the rear inner wall of the U-shaped groove. The bidirectional screw is fixedly installed at the end of the throttle that extends into the U-shaped groove. The locking spring is fixedly installed at the end of the clamping block away from the positioning protrusion. The front end of the locking spring is fixedly installed to another clamping block, and the locking spring is sleeved on the outside of the bidirectional screw.

[0010] Preferably, the clamping mechanism further includes a magnetic block, a hidden groove is provided on the left side of the placement groove, and a magnetic block is fixedly installed on the inner wall of the left side of the hidden groove, and the magnetic block is magnetically connected to the frame.

[0011] Preferably, the opening of the placement slot is designed with rounded corners.

[0012] Preferably, the opening of the positioning arc is designed with rounded corners.

[0013] Preferably, the clamping block is designed in an L-shape, and the two ends of the clamping block are respectively engaged with the side and bottom of the U-shaped groove.

[0014] Preferably, there are multiple positioning protrusions, and the multiple positioning protrusions are arranged linearly and are all engaged in the corresponding positioning arc.

[0015] Compared with related technologies, the filter screen anti-fall device provided by this utility model has the following beneficial effects: After the replaceable filter screen is replaced, the frame and the replaceable filter screen are inserted into the placement groove, and the frame is quickly and conveniently fixed and positioned by the clamping mechanism. At the same time, the stability of the frame is improved by the cooperation of multiple fixing methods inside the clamping mechanism. Even when the range hood is running at high wind speed or used for a long time, the frame and the replaceable filter screen can still remain stable, which not only ensures good smoke exhaust effect, but also does not cause any safety hazards. Attached Figure Description

[0016] Figure 1 This is a front view of the filter screen anti-fall device of this utility model;

[0017] Figure 2 This is a cross-sectional view of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the frame and replaceable filter structure of this utility model;

[0019] Figure 4This is a schematic diagram of the bidirectional screw and clamping block structure of this utility model;

[0020] Figure 5 This utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0021] Figure 6 This utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0022] The following are the labels in the diagram: 1. Range hood; 2. Placement slot; 3. Frame; 31. Replaceable filter; 32. Positioning arc; 4. U-shaped groove; 41. Clamping block; 42. Positioning protrusion; 43. Rotary handle; 44. Two-way screw; 45. Locking spring; 5. Hidden groove; 51. Magnetic block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1 to 6 A filter screen anti-fall device includes a range hood 1, which is designed with an inclination. A placement groove 2 is provided at the bottom of the range hood 1. A frame 3 is slidably engaged in the placement groove 2. A replaceable filter screen 31 is bonded to the top of the frame 3. Multiple positioning arc holes 32 are provided on the front and rear sides of the frame 3 close to the left side. The top of the positioning arc holes 32 passes through the replaceable filter screen 31.

[0025] The front and rear sides of the placement slot 2 are symmetrically equipped with clamping mechanisms for locking the frame 3.

[0026] In the specific implementation process, after the replaceable filter 31 is replaced, the frame 3 and the replaceable filter 31 are inserted into the placement slot 2, and the frame 3 is quickly and conveniently fixed and positioned by the clamping mechanism. At the same time, the stability of the frame 3 is improved by the cooperation of multiple fixing methods inside the clamping mechanism. Even when the range hood 1 is running at high wind speed or used for a long time, the frame 3 and the replaceable filter 31 can still remain stable.

[0027] refer to Figure 2 , Figure 4 and Figure 6As shown, the clamping mechanism includes a clamping block 41, a positioning protrusion 42, a throttle 43, a bidirectional screw 44, and a locking spring 45. A U-shaped groove 4 is provided inside the range hood 1 and on the left side of the placement groove 2. The two ends of the U-shaped groove 4 are connected to the placement groove 2. The clamping block 41 is symmetrically slidably engaged in the U-shaped groove 4. The positioning protrusion 42 is located on the side of the clamping block 41 near the positioning arc 32 and engages with the positioning arc 32. The throttle 43 is rotatably connected to the rear side of the range hood 1. The front end of the throttle 43 penetrates the rear inner wall of the U-shaped groove 4. The bidirectional screw 44 is fixedly installed at the end of the throttle 43 that extends into the U-shaped groove 4. The locking spring 45 is fixedly installed at the end of the clamping block 41 away from the positioning protrusion 42. The front end of the locking spring 45 is fixedly installed with another clamping block 41. The locking spring 45 is sleeved on the outside of the bidirectional screw 44.

[0028] The clamping mechanism also includes a magnetic block 51. A hidden groove 5 is provided on the left side of the placement groove 2. A magnetic block 51 is fixedly installed on the inner wall of the left side of the hidden groove 5. The magnetic block 51 is magnetically connected to the frame 3.

[0029] It should be noted that by using a variety of fixing methods in conjunction with the internal structure of the clamping mechanism, the stability of fixing frame 3 is improved.

[0030] refer to Figure 5 As shown, the opening of the placement slot 2 has a rounded corner design.

[0031] It should be noted that this facilitates the insertion of the frame 3 and the replaceable filter 31 into the placement slot 2.

[0032] refer to Figure 6 As shown, the opening of the positioning arc 32 has a rounded corner design.

[0033] It should be noted that this facilitates the positioning protrusion 42 to be inserted into the positioning arc 32.

[0034] refer to Figure 6 As shown, the clamping block 41 is designed in an L-shape, and the two ends of the clamping block 41 are respectively clamped to the side and bottom of the U-shaped groove 4.

[0035] It should be noted that the L-shaped design increases the stability of the clamping block 41 when it moves.

[0036] refer to Figure 6 As shown, there are multiple positioning protrusions 42, and the multiple positioning protrusions 42 are arranged linearly and are all engaged in the corresponding positioning arc 32.

[0037] It should be noted that the engagement of multiple positioning protrusions 42 with the positioning arc 32 increases the stability of fixing the frame 3.

[0038] The working principle of the filter screen anti-fall device provided by this utility model is as follows: When cleaning the filter screen, turn the handle 43. The handle 43 drives the bidirectional screw 44 to rotate. The bidirectional screw 44 drives the clamping blocks 41 on both sides to move forward and backward, thereby causing the locking spring 45 to deform and lengthen. The clamping blocks 41 on both sides drive the positioning protrusions 42 to move forward and backward to release the corresponding positioning arc 32, thereby releasing the lock on the frame 3. At this time, the frame 3 can be pulled out by force. When the force on the frame 3 is greater than the magnetic attraction between the magnetic block 51 and the frame 3, the frame 3 is pulled out along the placement groove 2. At this time, the replaceable filter screen 31 on the frame 3 can be replaced to complete the cleaning. After the frame 3 and the replaceable filter screen 31 are inserted into the placement groove 2, the frame is magnetically connected to the frame 3 through the magnetic block 51. 3. After fixing, rotate the handle 43 in the opposite direction. The handle 43 drives the bidirectional screw 44 to rotate in the opposite direction. The bidirectional screw 44 drives the clamping blocks 41 on both sides to move towards the middle, thereby driving the locking spring 45 to reset. The clamping blocks 41 on both sides drive their corresponding positioning protrusions 42 to engage with the positioning arc 32. The positioning protrusions 42 and the positioning arc 32 lock and position the frame 3. At the same time, the locking spring 45 reinforces the clamping blocks 41 on both sides, thereby preventing the positioning protrusions 42 and other structures from loosening during use. Through the cooperation of multiple fixing methods inside the clamping mechanism, the stability of fixing the frame 3 is improved. Even when the range hood 1 is running at high wind speed or used for a long time, the frame 3 and the replaceable filter screen 31 can still remain stable, ensuring good smoke exhaust effect and not causing any safety hazards.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A filter screen anti-fall device, comprising a range hood (1), wherein the range hood (1) is of an inclined design, characterized in that: The range hood (1) has a placement slot (2) at the bottom, and a frame (3) is slidably attached to the placement slot (2). A replaceable filter (31) is glued to the top of the frame (3). Multiple positioning arcs (32) are opened on the front and back sides of the frame (3) close to the left side, and the replaceable filter (31) passes through the top of the positioning arcs (32). The front and rear sides of the placement slot (2) are symmetrically and slidably equipped with clamping mechanisms for locking the frame (3).

2. The filter screen anti-fall device according to claim 1, characterized in that: The clamping mechanism includes a clamping block (41), a positioning protrusion (42), a throttle (43), a bidirectional screw (44), and a locking spring (45). A U-shaped groove (4) is provided inside the range hood (1) on the left side of the placement slot (2). Both ends of the U-shaped groove (4) are connected to the placement slot (2). The clamping block (41) is symmetrically slidably engaged within the U-shaped groove (4). The positioning protrusion (42) is located on the side of the clamping block (41) near the positioning arc (32). The positioning protrusion (42) and the positioning arc (32) are aligned. 32) Engagement: The handle (43) is rotatably connected to the rear side of the range hood (1). The front end of the handle (43) penetrates the rear inner wall of the U-shaped groove (4). The bidirectional screw (44) is fixedly installed at one end of the handle (43) that extends into the U-shaped groove (4). The locking spring (45) is fixedly installed at one end of the clamping block (41) away from the positioning protrusion (42). The front end of the locking spring (45) is fixedly installed with another clamping block (41). The locking spring (45) is sleeved on the outside of the bidirectional screw (44).

3. The filter screen anti-fall device according to claim 1, characterized in that: The clamping mechanism also includes a magnetic block (51). A hidden groove (5) is provided on the left side of the placement groove (2). A magnetic block (51) is fixedly installed on the inner wall of the left side of the hidden groove (5). The magnetic block (51) is magnetically connected to the frame (3).

4. The filter screen anti-fall device according to claim 1, characterized in that: The opening of the placement slot (2) is designed with rounded corners.

5. The filter screen anti-fall device according to claim 1, characterized in that: The opening of the positioning arc (32) is designed with rounded corners.

6. The filter screen anti-fall device according to claim 2, characterized in that: The clamping block (41) is designed in an L-shape, and the two ends of the clamping block (41) are respectively clamped to the side and bottom of the U-shaped groove (4).

7. A filter screen anti-fall device according to claim 2, characterized in that: There are multiple positioning protrusions (42), and the multiple positioning protrusions (42) are arranged linearly and are engaged in the corresponding positioning arc (32).

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