A ventilating fan mounting base

Abstract

The utility model discloses a ventilating fan mounting base, including casing and mounting panel, is equipped with the limit card block on the mounting panel, is equipped with the connecting plate outside the casing, is equipped with the limit card slot on the connecting plate, and the limit card block is connected with the limit card slot, is equipped with the limit slot on the limit card block, is equipped with the recess on the inner wall of limit slot, is equipped with the convex strip in the limit card slot, is equipped with the protruding block on the convex strip, is equipped with the ring plate and the positioning plate on the mounting panel, and the ring plate and the positioning plate form the rotation groove between, and the connecting plate side extends the snap ring, and the rotation groove and the snap ring contour match, and the snap ring is located in the rotation groove, and the both ends of positioning plate are bent to the side away from the snap ring, and the bent portion adopts the round angle transition, and is equipped with the limit baffle on the ring plate, and the limit baffle and the snap ring bottom surface abut, overcome the traditional bolt connection mode cumbersome, the low efficiency disadvantage of operation.

Description

Technical Field

[0001] This utility model belongs to the field of ventilation fan technology, and in particular relates to a ventilation fan mounting base. Background Technology

[0002] An exhaust fan is a device used for indoor ventilation. It generally consists of a casing, a fan, and a panel. By rotating the fan impeller, it can draw in indoor or outdoor air and exhaust the drawn-in air to either location, thus achieving the purpose of ventilation. However, the casing and mounting panel of existing exhaust fans are usually fixed by bolts. Although this connection method is stable, it requires the use of tools to tighten or loosen multiple bolts during installation and disassembly, which is cumbersome and inefficient. This is especially inconvenient in situations where frequent maintenance or replacement is required. In addition, bolt connections are prone to stripping and corrosion, which may affect the ease of disassembly and assembly and the reliability of the connection after long-term use. Therefore, it is necessary to design an exhaust fan mounting base that is simple in structure, easy to disassemble and assemble, and has a stable connection to improve installation efficiency and ease of use. Summary of the Invention

[0003] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a ventilation fan mounting base to overcome the disadvantages of traditional bolt connection method, which is cumbersome and inefficient.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A ventilation fan mounting base includes a housing and a mounting panel. The mounting panel is provided with a limiting block, and a connecting plate is provided outside the housing. The connecting plate is provided with a limiting slot. The limiting block and the limiting slot engage to achieve the locking and fixing of the mounting panel and the housing.

[0006] Furthermore, the limiting block is provided with a limiting groove, the inner wall of the limiting groove is provided with a groove, the limiting groove is provided with a protrusion, and the protrusion is provided with a protrusion. The limiting block passes through the limiting groove. By rotating the housing, the protrusion is screwed into the limiting groove, and the protrusion is engaged in the groove, thereby realizing the snap-fit ​​fixing of the mounting panel and the housing.

[0007] Furthermore, the mounting panel is provided with a ring plate and a positioning plate, and a rotating groove is formed between the ring plate and the positioning plate. A retaining ring extends from the side of the connecting plate. The rotating groove and the retaining ring are matched. The retaining ring is located in the rotating groove to guide and limit the rotation trajectory of the housing.

[0008] Furthermore, both ends of the positioning plate are bent away from the retaining ring, and the bends are rounded.

[0009] Furthermore, a limiting baffle is provided on the ring plate, which abuts against the bottom surface of the retaining ring to limit and support the housing after the protrusion is inserted into the groove.

[0010] Furthermore, a receiving cavity is formed between the retaining ring, the connecting plate, and the housing, and reinforcing ribs are provided inside the receiving cavity.

[0011] Furthermore, a reinforcing plate is provided on the mounting panel.

[0012] Furthermore, the connecting plate is equipped with wire grooves and wire holes for wiring installation.

[0013] Furthermore, the connecting plate is equipped with positioning posts and brackets for fixing the wiring.

[0014] Furthermore, the two ends of the ring plate gradually taper until they connect with the mounting panel.

[0015] The present invention has the following beneficial effects due to the adoption of the above technical solution.

[0016] 1. In this utility model, the cooperation between the limiting block and the limiting groove enables the protrusion and the groove to engage, thereby achieving quick engagement and fixation of the housing and the mounting panel. This replaces the traditional bolt connection method, significantly improving assembly efficiency and making it suitable for occasions that require frequent maintenance or replacement.

[0017] 2. In this utility model, by setting a rotating groove and a retaining ring, the rotation trajectory of the housing is effectively guided, ensuring accurate alignment of the protrusion and groove during installation, thereby improving the accuracy and stability of installation.

[0018] 3. In this utility model, by setting the limiting baffle, the limiting block can be limited when it passes through the limiting slot. Combined with the mechanical stop of the protrusion by the limiting slot, a multiple safety mechanism is formed to ensure the structural stability and reliability of the connection.

[0019] 4. In this utility model, by setting reinforcing ribs in the receiving cavity and reinforcing plates on the mounting panel, the rigidity and deformation resistance of the overall structure are effectively enhanced, and the service life of the product is extended. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a three-dimensional structural diagram of a ventilation fan mounting base according to the present invention.

[0022] Figure 2 This is a cross-sectional view of a ventilation fan mounting base according to the present invention.

[0023] Figure 3 This is a three-dimensional structural diagram of the mounting panel in this utility model.

[0024] Figure 4This is a three-dimensional structural diagram of the mounting panel in this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the shell in this utility model.

[0026] Figure 6 This is a three-dimensional structural diagram of the shell in this utility model.

[0027] Figure 7 for Figure 2 Enlarged schematic diagram of the local structure at point A.

[0028] Figure 8 for Figure 4 Enlarged schematic diagram of the local structure at point B.

[0029] Figure 9 for Figure 6 Enlarged schematic diagram of the local structure at point C.

[0030] In the diagram: 1-Housing; 2-Mounting panel; 3-Limiting block; 4-Connecting plate; 5-Limiting groove; 6-Limiting slot; 7-Groove; 8-Protrusion; 9-Ring plate; 10-Positioning plate; 11-Rotating groove; 12-Snap ring; 13-Limiting baffle; 14-Receiving cavity; 15-Reinforcing rib; 16-Reinforcing piece; 17-Wire groove; 18-Wire hole; 19-Positioning post; 20-Bracket; 21-Protrusion. Detailed Implementation

[0031] like Figure 1 to Figure 9 As shown, this utility model provides a ventilation fan mounting base. The ventilation fan mounting base includes a hollow shell 1 and a mounting panel 2. A fan blade assembly is installed inside the shell 1. The fan blade assembly is driven to rotate by a drive assembly to drive airflow. This technical solution is well known to those skilled in the art and will not be described in detail here.

[0032] The mounting panel 2 extends a frame towards the housing 1. A ring plate 9 is fixedly installed on the inner wall of the frame. A limit block 3 is fixedly installed on the inner wall of the ring plate 9. A limit groove 6 is opened on the limit block 3, and a groove 7 is provided on the inner wall of the limit groove 6.

[0033] A connecting plate 4 is fixedly provided on the outside of the housing 1, and a limiting groove 5 is provided on the periphery of the connecting plate 4. A protrusion 8 is fixedly provided in the limiting groove 5, and a protrusion 21 is provided on the protrusion 8. One end of the protrusion 8 is connected to the limiting groove 5. The length of the protrusion 8 is less than that of the limiting groove 5, and the distance between the protrusion 8 and the limiting groove 5 is greater than the length of the limiting block 3, so as to facilitate the installation of the limiting block 3.

[0034] Both the limiting groove 6 and the corner of the protrusion 8 are provided with arc-shaped bevels, so that when the limiting block 3 comes into contact with the protrusion 8, it avoids jamming caused by hard collision. This design is especially suitable for repeated disassembly and assembly between plastic parts.

[0035] When the protrusion 21 is engaged in the groove 7, the limiting groove 6 abuts against the end of the protrusion 8, forming a mechanical stop to prevent the retaining ring 12 from rotating excessively, which would cause the installation of the housing 1 and the mounting panel 2 to be unstable.

[0036] A retaining ring 12 extends from the connecting plate 4 near the mounting panel 2, and the retaining ring 12 matches the contour of the ring plate 9. At the same time, the mounting panel 2 is provided with a positioning plate 10. The distance between the ring plate 9 and the positioning plate 10 forms a rotating groove 11. The retaining ring 12 is set in the rotating groove 11. Through the setting of the rotating groove 11, the retaining ring 12 moves along the trajectory of the rotating groove 11, which precisely restricts the rotation trajectory of the retaining ring 12 and improves the stability when installing the housing 1.

[0037] Both ends of the positioning plate 10 are bent toward the end away from the retaining ring 12, and the bends are rounded to reduce the friction between the positioning plate 10 and the retaining ring 12.

[0038] A limiting baffle 13 is provided on the ring plate 9. The limiting baffle 13 abuts against the edge of the retaining ring 12 during initial installation to limit the position of the retaining ring 12 and prevent misalignment between the protrusion 21 and the groove 7.

[0039] The retaining ring 12, the connecting plate 4, and the housing 1 enclose a receiving cavity 14. The receiving cavity 14 is provided with radially arranged reinforcing ribs 15 to improve the deformation resistance of the retaining ring 12. At the same time, the thickness of the reinforcing ribs 15 is less than the depth of the receiving cavity 14 to avoid interference with the positioning plate 10.

[0040] The reinforcing plate 16 on the mounting panel 2 is connected to the frame to form a support structure, thereby improving the deformation resistance of the mounting panel 2.

[0041] A wire groove 17 is provided on the housing 1, and positioning posts 19 are symmetrically arranged on the mounting plate. After the wire passes through the wire groove 17, it is wrapped and fixed to the positioning posts 19 to prevent it from being pulled off by external force.

[0042] Meanwhile, the mounting plate is provided with a wire hole 18, and a cantilever bracket 20 is provided above it to clamp the wire, forming a double anti-detachment structure.

[0043] All moving parts have chamfered edges, which eliminates the risk of scratches during installation and reduces stress concentration through rounded corners, thus extending the fatigue life of plastic parts.

[0044] When installing the housing 1 and the mounting panel 2, the limiting block 3 passes through the limiting slot 5, and the housing 1 is rotated so that the protrusion 8 is screwed into the limiting slot 6. At the same time, the protrusion 21 on the protrusion 8 is engaged into the groove 7, thereby realizing the snap-fit ​​fixation between the housing 1 and the mounting panel 2. This snap-fit ​​design replaces the traditional bolt connection and realizes the quick assembly and disassembly of the housing 1 and the mounting panel 2.

[0045] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A ventilation fan mounting base, comprising a housing and a mounting panel, characterized in that: The mounting panel is provided with a limiting block, and the outer shell is provided with a connecting plate. The connecting plate is provided with a limiting slot. The limiting block engages with the limiting slot to achieve the locking and fixing of the mounting panel and the shell.

2. The ventilation fan mounting base according to claim 1, characterized in that: The limiting block is provided with a limiting groove, the inner wall of the limiting groove is provided with a groove, the limiting groove is provided with a protrusion, the protrusion is provided with a protrusion, the limiting block passes through the limiting groove, the housing is rotated, so that the protrusion is screwed into the limiting groove and the protrusion is engaged in the groove, thereby realizing the snap-fit ​​fixing of the mounting panel and the housing.

3. The ventilation fan mounting base according to claim 2, characterized in that: The mounting panel is provided with a ring plate and a positioning plate, and a rotating groove is formed between the ring plate and the positioning plate. A retaining ring extends from the side of the connecting plate. The rotating groove matches the contour of the retaining ring. The retaining ring is disposed in the rotating groove to guide and limit the rotation trajectory of the housing.

4. The ventilation fan mounting base according to claim 3, characterized in that: The two ends of the positioning plate are bent away from the retaining ring, and the bends are rounded.

5. A ventilation fan mounting base according to claim 3, characterized in that: The ring plate is provided with a limiting baffle, which abuts against the bottom surface of the retaining ring, and is used to limit and support the housing after the protrusion is engaged in the groove.

6. A ventilation fan mounting base according to claim 3, characterized in that: A receiving cavity is formed between the retaining ring, the connecting plate, and the housing, and a reinforcing rib is provided inside the receiving cavity.

7. The ventilation fan mounting base according to claim 1, characterized in that: The mounting panel is equipped with a reinforcing plate.

8. A ventilation fan mounting base according to claim 1, characterized in that: The connecting plate is provided with wire grooves and wire holes for installing the wiring.

9. A ventilation fan mounting base according to claim 1, characterized in that: The connecting plate is equipped with positioning posts and brackets for fixing the wiring.

10. A ventilation fan mounting base according to claim 3, characterized in that: The two ends of the ring plate gradually taper until they connect with the mounting panel.

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