CN202900702U - Multifunctional negative pressure fan - Google Patents

Abstract

The utility model discloses a multifunctional negative pressure fan, including the organism, be equipped with rotatable many shutter blades on the organism, characterized by: the louver blade opening device further comprises a touch piece, a linkage mechanism which is pulled by the touch piece to enable the louver blades to rotate so as to open the louver blades, and a limiting mechanism which enables the louver blades to stop and keep at an opening position. The utility model discloses multi-functional negative-pressure air fan, hot day can open the fan and realize the circulation of air, and cold day can be under the condition that does not start the fan, opens the shutter plate and realizes the circulation of air, compares with prior art, has multiple functions, can be suitable for different weather or environment occasion, can the energy saving, and is more environmental protection. The utility model discloses multi-functional negative-pressure air fan compares with prior art, has only had an interlock mechanism more and has touched the piece, simple structure, and the production preparation is easy, can realize multiple functions.

Description

Multifunctional negative pressure fan

technical field

The utility model relates to a negative pressure fan, which belongs to the technical field of fans.

Background technique

In the prior art, the negative pressure fan uses the cooling principle of air convection and negative pressure ventilation to naturally inhale fresh air from the opposite side of the installation site - the door or window, and quickly force the indoor stuffy air out of the room to prevent any poor ventilation. The machine that can improve the problem has a good effect of cooling and ventilating. However, in the prior art, the negative pressure fan is provided with louvers. When the fan is started, the fan blows the louver, and the louver rotates to open, so that the air blower can carry out the air outlet gap. Stop at the open position. When the fan is turned off, the louver rotates due to gravity, and the louver is closed to close the gap. At the same time, the louver is blocked by the stopper and stops at the closed position. Under normal use conditions, the negative pressure fan is only started in summer, and it is generally not turned on in cold weather. state), and starting the negative pressure fan wastes electric energy, so that the air in the room cannot be fully circulated, so the prior art negative pressure fan can only be used in summer, and its function is relatively single.

Utility model content

The technical problem to be solved by the utility model is to provide a multifunctional negative pressure fan, which has multiple functions and is suitable for different climates or environments.

The utility model can take the following technical solutions:

A multi-functional negative pressure fan, including a body, which is provided with a plurality of rotatable louvers, and is characterized in that: it also includes a touch piece, one is pulled by the touch piece to make each louver rotate and realize the continuous opening of the louver. The moving mechanism, and the limit mechanism that keeps each louver in the open position.

The utility model can further take the following improvement measures to solve the problem:

The linkage mechanism is composed of a pull rod, a connecting rod, and a plurality of rocking rods. One end of each rocking rod is connected to each corresponding louver, and the other end of each rocking rod is rotatably connected to the connecting rod. When the connecting rods move, each The louvers rotate accordingly, and the pull rod is movably connected with the connecting rod.

The connecting rod is provided with a strip hole, and the pull rod is provided with a pin that can slide along the strip hole. active connection.

The touch piece is provided with a rectangular sliding hole, and the touch piece is installed on the connection pin provided on the body through the rectangular slide hole.

The limit mechanism is an opening that keeps the louver at the open position when the actuating member is placed in the opening and cannot move.

The opening is set in the strip-shaped movable hole, and the free end of the touch piece is placed in the strip-shaped movable hole; the strip-shaped movable hole is arranged on the body or the shell of the body.

The touch piece is handle type.

The actuating member is a pull rope, and the limit mechanism is a fixed structure that can tighten the pull rope after being connected with or contacted with or clamped by the free end of the pull rope.

The fixing structure is composed of a pull ring arranged at the free end of the pull cord and a pull piece arranged on the fuselage.

The fixing structure is composed of a first connecting buckle arranged at the free end of the pull cord and a second connecting buckle arranged on the fuselage for connecting with the first connecting buckle.

Above-mentioned technical scheme has such technical effect :

1. The multifunctional negative pressure fan of the utility model can turn on the fan to realize air circulation in hot weather, and open the louvers to realize air circulation without turning on the fan in cold weather. Compared with the prior art, it has multiple functions and can It is suitable for different climates or environmental occasions, can save energy, and is more environmentally friendly.

2. Compared with the prior art, the multi-functional negative pressure fan of the present utility model has only one more linkage mechanism and touch piece, which has a simple structure, is easy to manufacture, and can realize various functions.

Description of drawings

Fig. 1 is a schematic diagram of the multifunctional negative pressure fan of the present invention when the louvers are opened.

Fig. 2 and Fig. 3 are schematic diagrams of different visual directions when the louver blades of the multifunctional negative pressure fan of the present invention are closed.

Fig. 4 is a schematic diagram when the louvers are opened.

Fig. 5 is an enlarged schematic view of the limit mechanism.

Fig. 6 is an exploded schematic view of the utility model multifunctional negative pressure fan.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments.

Embodiment 1: As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, and Fig. 6, a multifunctional negative pressure fan includes a body 1, and the body 1 is provided with a plurality of rotatable louver blades 2 , also includes actuating piece 3, a linkage mechanism that is pulled by the actuating piece 3 to make each louver rotate and thereby realize opening the louver 2, and a limit mechanism that makes each louver 2 stop and remain in the open position. The touch element 3 is handle type.

The linkage mechanism is composed of a pull rod 4, a connecting rod 5, and a plurality of rocking rods 6. One end of each rocking rod 6 is connected to each corresponding louver 2, and the other end of each rocking rod 6 is rotatably connected to the connecting rod 5. When the movement of the connecting rod 5 is realized, each louver 2 rotates accordingly, and the pull rod 4 is movably connected with the connecting rod 5 .

The connecting rod 5 is provided with an elongated hole 7, and the pull rod 4 is provided with a pin that can slide along the elongated hole, and the pin extends into the elongated hole 7 to be movably connected with the connecting rod 5, The pull rod 4 is movably connected with the touch piece 3 .

The touch piece 3 is provided with a rectangular sliding hole 8, and the touch piece 3 is installed on the connecting pin 9 provided on the body 1 through the rectangular sliding hole 8.

The limit mechanism is an opening 10 that keeps the louver at the open position when the trigger 3 is placed in the opening and cannot move.

The opening 10 is set in the strip-shaped movable hole 11 , and the free end of the touch piece 3 is placed in the strip-shaped movable hole 11 . The strip movable hole 11 is located on the body 1 or its shell of the body. In this example, the strip-shaped active hole is located on the rear plate of the shell of the body.

Of course, the limit mechanism can also be other structures to keep the louvers 2 stationary and in the open position.

Working principle: When you want to open the louvers without starting the fan, pull the free end of the touch piece (handle) upwards. At this time, the other end of the touch piece is pulled to the pull rod, and the pull rod then pulls the connecting rod, and the connecting rod moves Finally, the connecting rod is pulled to the rocker, so that the louver rotates, thereby opening the louver, and finally the free end of the actuator is placed in the opening 10, so that the actuator will not move, and the louver remains in the open position , will not be closed by gravity. When the louver is to be closed, the free end of the touch piece is released from the opening 10, and the touch piece is pulled to the other end of the strip-shaped movable hole. At this moment, the louver itself will be subject to the effect of gravity and will be closed naturally. The connecting rod 5 is provided with an elongated hole 7, which can make the connecting rod move when it is subjected to the pulling force of the pull rod, and then the louvers are opened. The rod is no longer blocked by the pull rod, so that the louvers can be freely closed under the action of gravity, and freely opened when subjected to the wind force of the fan, so that the negative pressure fan has normal functions.

Embodiment 2: The actuating member is a pull rope, and the limit mechanism is a fixed structure that can tighten the pull rope after being connected to or contacted with or clamped by the free end of the pull rope.

The fixing structure is composed of a pull ring arranged at the free end of the pull cord and a pull piece arranged on the fuselage.

Alternatively, the fixing structure is composed of a first connecting buckle arranged at the free end of the pull cord and a second connecting buckle arranged on the fuselage for connecting with the first connecting buckle. The connecting buckle can be a conventional connecting buckle.

Other working principles are similar to Embodiment 1.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A multi-functional negative pressure fan, comprising a body, the body is provided with a plurality of rotatable louvers, and is characterized in that: it also includes a touch piece, one is pulled by the touch piece to make each louver rotate and then realize opening the louver The linkage mechanism, and the limit mechanism that keeps each louver in the open position. 2. The multifunctional negative pressure fan according to claim 1, characterized in that: the linkage mechanism is composed of a pull rod, a connecting rod, and a plurality of rocking rods, one end of each rocking rod is connected to each corresponding louver respectively, The other end of each rocker is rotatably connected with the connecting rod, and when the connecting rod is moved, each louver rotates accordingly, and the pull rod and the connecting rod are movably connected. 3. The multifunctional negative pressure fan according to claim 2, characterized in that: the connecting rod is provided with a strip hole, the pull rod is provided with a pin that can slide along the strip hole, and the pin extends into The elongated hole is movably connected with the connecting rod, and the pull rod is movably connected with the touch piece. 4. The multi-functional negative pressure fan according to claim 1 or 3, characterized in that: the touch piece is provided with a rectangular sliding hole, and the touch piece is installed on the connecting pin provided on the body through the rectangular sliding hole. 5. The multi-functional negative pressure fan according to claim 1, characterized in that: the limit mechanism is an opening that keeps the louver in the open position when the touch piece is placed in the opening and cannot move. 6. The multi-functional negative pressure fan according to claim 5, characterized in that: the opening is set in a strip-shaped movable hole, and the free end of the touch piece is placed in the strip-shaped movable hole; the strip-shaped movable hole The movable hole is arranged on the body or the shell of the body. 7. The multi-functional negative pressure fan according to claim 1, characterized in that: the touch element is a handle type. 8. The multi-functional negative pressure fan according to claim 1, characterized in that: the touch piece is a pull rope, and the limit mechanism is connected or contacted with the free end of the pull rope or can be tightened after being clamped. The fixed structure of the rope. 9. The multi-functional negative pressure fan according to claim 8, characterized in that: said fixing structure is composed of a pull ring on the free end of the pull cord and a pull piece on the fuselage. 10. The multi-functional negative pressure blower according to claim 8, characterized in that: the fixed structure consists of a first connecting buckle arranged at the free end of the stay cord and a first connecting buckle arranged on the fuselage to be connected with the first connecting buckle. The second connecting buckle is formed.

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