CN212657056U

CN212657056U - Waterproof dustproof fan

Info

Publication number: CN212657056U
Application number: CN202021022315.3U
Authority: CN
Inventors: 谭志荣
Original assignee: Foshan Ruiyuan Hardware Products Co ltd
Current assignee: Foshan Ruiyuan Hardware Products Co ltd
Priority date: 2020-06-06
Filing date: 2020-06-06
Publication date: 2021-03-05
Anticipated expiration: 2030-06-06

Abstract

The utility model discloses a waterproof and dustproof fan, which comprises a shell, a plurality of shutters, a linkage rack, an electromagnet, a balancing weight and fan blades; the fan blade is pivoted in the casing, and an air outlet is formed at the part of the casing, which is opposite to the back of the fan blade; the plurality of shutters are arranged at the air outlet and are respectively pivoted on the shell; each louver is fixedly connected with a linkage gear; the linkage rack is arranged on the shell in a vertically movable manner and is fixed with a balancing weight; the linkage rack can move downwards under the action of the dead weight of the linkage rack and the counterweight block; the linkage rack is respectively meshed with the linkage gears, and can be used for linking the plurality of shutters to unfold to open the air outlet through the linkage gears when moving upwards and linking the plurality of shutters to close the air outlet through the linkage gears when moving downwards; an iron sheet is arranged at the top end of the linkage rack; the electromagnet is arranged on the shell and can adsorb the iron sheet when being electrified. The utility model discloses can reduce the energy loss to improve the stability that the tripe expanded.

Description

Waterproof dustproof fan

Technical Field

The utility model relates to a fan field especially relates to a waterproof dustproof fan.

Background

The fan is a machine which increases the gas pressure and discharges the gas by means of the input mechanical energy. The existing fan is usually provided with a shutter at an air outlet to prevent water and dust, but the existing shutter of the shutter is usually opened by driving the shutter by wind power generated after the fan is started to operate, and the shutter can be automatically closed under the traction of gravity after the fan is stopped to operate, so that the fan needs to generate enough wind power to ensure that the shutter can be opened, the fan with the structure has large energy loss, and the shutter is not stable when being unfolded.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide a dustproof and waterproof fan, it can reduce the energy loss to improve the stability that the tripe expandes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a waterproof and dustproof fan comprises a shell, a plurality of shutters, a linkage rack, an electromagnet, a balancing weight and fan blades; the fan blades are pivoted in the shell, and an air outlet is formed in the part of the shell, which is opposite to the back of the fan blades; the plurality of shutters are sequentially arranged at the air outlet from top to bottom and are respectively pivoted on the shell; each louver is fixedly connected with a linkage gear; the linkage rack is mounted on the machine shell in a vertically movable manner and is fixed with a balancing weight; the linkage rack can move downwards under the action of the self weight of the linkage rack and the counterweight block; the linkage rack is respectively meshed with the linkage gears, and can be used for linking a plurality of shutters to be unfolded to open the air outlet through the linkage gears when moving upwards and linking a plurality of shutters to be closed to close the air outlet through the linkage gears when moving downwards; an iron sheet is arranged at the top end of the linkage rack; the electromagnet is arranged on the shell and positioned above the iron sheet; the electromagnet can adsorb the iron sheet when being electrified.

Preferably, the casing is provided with a plug-in slot extending vertically; the linkage rack is provided with a roller, and the roller is movable and is inserted in the insertion groove in a matching manner.

Preferably, the number of the rollers is two, and the two rollers are respectively arranged on the upper side and the lower side of the linkage rack.

Preferably, the lower groove wall of the insertion groove forms a limiting surface, a buffering cushion is fixed on the limiting surface, and the buffering cushion is used for abutting against the roller.

Preferably, the waterproof and dustproof fan further comprises a baffle; the baffle is fixed on one side of the shell, which is provided with the air outlet, and extends out of the shell; the baffle is positioned above the louver.

Preferably, the baffle is of an arc structure with the middle arched upwards.

Preferably, the opposite ends of the louver are respectively fixed with a rotating shaft; each rotating shaft is movably inserted in the shell; the linkage gear is fixedly sleeved outside the rotating shaft.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a with the tripe pin joint setting, the rigid coupling has the linkage gear on every tripe, the cooperation can the up-and-down motion and with each linkage gear engagement's linkage rack, fixed paster on the linkage rack, and the setting is located the electro-magnet of iron sheet top, thus, adsorb the iron sheet and drive linkage rack rebound when the electro-magnet circular telegram, the linkage rack rotates to expansion and opens the air outlet through linkage gear linkage tripe, the wind-force that need not to rely on after the fan start-up operation to produce drives the tripe and opens, energy loss is reduced, and it is more stable to expand.

Drawings

Fig. 1 is a schematic structural view of the waterproof and dustproof fan of the present invention;

FIG. 2 is a side sectional view of the waterproof and dustproof blower of the present invention;

fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

In the figure: 10. a housing; 11. inserting the slots; 20. louver blades; 30. a linkage rack; 40. an electromagnet; 50. a balancing weight; 60. fan blades; 70. a linkage gear; 80. iron sheets; 90. a cushion pad; 100. a roller; 110. a baffle plate; 120. and rotating the shaft.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

the waterproof and dustproof fan shown in fig. 1-3 comprises a casing 10, a plurality of shutters 20, a linkage rack 30, an electromagnet 40, a balancing weight 50 and fan blades 60; the fan blade 60 is pivoted in the casing 10, and an air outlet is formed at the position of the casing 10, which is opposite to the back of the fan blade 60; it should be noted that the back of the fan blade 60 refers to a side of the fan blade 60 that blows air during the rotation of the fan blade 60; the plurality of louvers 20 are sequentially arranged from top to bottom at the air outlet and are respectively pivoted on the casing 10, and specifically, the upper end of the fan blade 60 is pivoted on the casing 10; each louver 20 is fixedly connected with a linkage gear 70; the linkage rack 30 is mounted on the housing 10 in a vertically movable manner, and is fixed with a counterweight block 50; the linkage rack 30 can move downwards under the action of the self weight and the counterweight block 50; the linkage rack 30 is respectively engaged with the plurality of linkage gears 70, and can link a plurality of pieces of the louvers 20 to be unfolded through the plurality of linkage gears 70 when moving upward so as to open the air outlet, and can link a plurality of pieces of the louvers 20 to be closed through the plurality of linkage gears 70 when moving downward so as to close the air outlet; it is understood that "the plurality of louvers 20 are unfolded" means a state in which the plurality of louvers 20 are all rotated to an inclined state such that a space for an air flow to flow is formed between the leaf surfaces of any adjacent two louvers 20; accordingly, "the plurality of louvers 20 are closed" means that the plurality of louvers 20 are all rotated to the vertical state such that there is no gap between the bottom ends of the upper blades and the top ends of the lower blades in any two adjacent louvers 20; an iron sheet 80 is arranged at the top end of the linkage rack 30; the electromagnet 40 is installed on the casing 10 and above the iron sheet 80; the electromagnet 40 can attract the iron piece 80 when energized.

On the basis of the structure, when the waterproof and dustproof fan is used, the electromagnet 40 is electrified to adsorb the iron sheet 80 so as to drive the linkage rack 30 to move upwards, the linkage rack 30 is linked with the shutter 20 through the linkage gear 70 to rotate to be unfolded so as to open the air outlet, the shutter 20 is not required to be driven to be opened by wind power generated after the fan is started to operate, the energy loss is reduced, and the unfolding is more stable; when the electromagnet 40 is not electrified, the linkage rack 30 moves downwards under the action of the self weight of the electromagnet and the counterweight block 50, so that the linkage gear 70 links the louver 20 to rotate to be closed to close the air outlet, and wind and dust prevention is realized.

Specifically, the casing 10 is provided with an insertion groove 11 extending vertically; the idler wheel 100 is installed on the linkage rack 30, the idler wheel 100 is movably inserted into the insertion groove 11 in a matched mode, the limitation of the motion direction of the linkage rack 30 is achieved, and friction is reduced due to the arrangement of the idler wheel 100.

The number of the rollers 100 is two, and the two rollers 100 are respectively arranged at the upper side and the lower side of the linkage rack 30.

It should be noted that, in order to prevent the linkage rack 30 from being separated from the casing 10 when moving downward, a limiting surface which limits the movement of the linkage rack 30 by abutting against the linkage rack 30 is formed on the casing 10, and specifically, a lower groove wall of the insertion groove 11 is formed as the limiting surface.

More specifically, a cushion 90 is fixed on the limiting surface, and the cushion 90 is used for abutting against the roller 100 to reduce noise and avoid damage caused by too large impact.

In order to achieve the waterproof function when the louver 20 is unfolded, it is preferable that the waterproof and dustproof fan further includes a baffle 110; the baffle 110 is fixed on one side of the casing 10 where the air outlet is formed, and extends out of the casing 10; the baffle 110 is positioned above the louver 20, and the baffle 110 can block part of water, so that the water inlet possibility of the waterproof and dustproof fan is reduced.

More preferably, the baffle 110 has an arc structure with a middle part arched upwards, so that water can be smoothly discharged out of the baffle 110.

Specifically, the opposite ends of the louver 20 are respectively fixed with a rotating shaft 120; each rotating shaft 120 is movably inserted into the casing 10; the linkage gear 70 is fixedly sleeved outside the rotating shaft 120.

Various other modifications and changes can be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. The utility model provides a waterproof dustproof fan which characterized in that: comprises a shell, a plurality of shutters, a linkage rack, an electromagnet, a balancing weight and fan blades; the fan blades are pivoted in the shell, and an air outlet is formed in the part of the shell, which is opposite to the back of the fan blades; the plurality of shutters are sequentially arranged at the air outlet from top to bottom and are respectively pivoted on the shell; each louver is fixedly connected with a linkage gear; the linkage rack is mounted on the machine shell in a vertically movable manner and is fixed with a balancing weight; the linkage rack can move downwards under the action of the self weight of the linkage rack and the counterweight block; the linkage rack is respectively meshed with the linkage gears, and can be used for linking a plurality of shutters to be unfolded to open the air outlet through the linkage gears when moving upwards and linking a plurality of shutters to be closed to close the air outlet through the linkage gears when moving downwards; an iron sheet is arranged at the top end of the linkage rack; the electromagnet is arranged on the shell and positioned above the iron sheet; the electromagnet can adsorb the iron sheet when being electrified.

2. The waterproof dustproof fan of claim 1, characterized in that: the shell is provided with an insertion groove extending along the vertical direction; the linkage rack is provided with a roller, and the roller is movable and is inserted in the insertion groove in a matching manner.

3. The waterproof dustproof fan of claim 2, characterized in that: the number of the rollers is two, and the two rollers are respectively arranged on the upper side and the lower side of the linkage rack.

4. The waterproof dustproof fan of claim 2, characterized in that: the lower groove wall of the insertion groove forms a limiting surface, a buffering cushion is fixed on the limiting surface, and the buffering cushion is used for abutting against the roller.

5. The waterproof dustproof fan of claim 1, characterized in that: the waterproof and dustproof fan further comprises a baffle; the baffle is fixed on one side of the shell, which is provided with the air outlet, and extends out of the shell; the baffle is positioned above the louver.

6. The waterproof dustproof fan of claim 5, characterized in that: the baffle is of an arc structure with the middle arched upwards.

7. The waterproof and dustproof fan of any one of claims 1 to 6, characterized in that: rotating shafts are respectively fixed at two opposite ends of the louver; each rotating shaft is movably inserted in the shell; the linkage gear is fixedly sleeved outside the rotating shaft.