JPH05752Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a flap type range hood that is installed above a cooking device such as a gas range installed in a kitchen.

(Prior art) A range hood installed in the kitchen is kept flush with the cabinet when not in use, in order to harmonize with the cabinets, etc. installed around it, and traps exhaust smoke, etc. when in use. In order to increase efficiency, there are flap-type range hoods in which the front plate can be opened and closed with respect to the hood body.

In conventional flap-type range hoods and flap-type ventilation fan hoods, the opening/closing mechanism of the front plate with a flap is such that the upper edge of the front plate is hinged to the front edge of the top plate of the hood body and pivotably supported in the front-rear direction. However, the approximately fan-shaped flaps fixedly protruding rearward on both sides of the back of the front plate are placed inside the left and right frames of the hood body, and there are also telescopic arm rods and sliding arms between the front plate or flaps and the hood body. It is configured with arm rods, link mechanisms, etc.

(Problems to be Solved by the Invention) The conventional structure described above has the problem that the front plate must be opened and closed manually, making it difficult to operate. In particular, in the case of large range hoods with large hoods, the weight of the front plate itself is considerable, and it is extremely difficult to open and close such a front plate manually.

The present invention was developed in view of the problems of the conventional technology described above, and its purpose is to automatically open and close the front plate, which is attached to the hood body so that it can be opened and closed, automatically. The aim is to provide a range hood that can

(Means for Solving the Problem) In order to achieve the above object, the range hood of the present invention is provided with a slide base that slides in the axial direction by the rotation of the motor on the hood body side, and an operating rod is mounted on the slide base. One end is connected, and the other end of the operating rod is connected to a bendable link connected across the hood body and a front plate rotatably attached to the hood body.

The above-mentioned hood main body is not limited to one in which an exhaust device is integrally assembled inside, but is applicable to a single hood that covers a ventilation fan.

Further, the control of the motor and the opening angle of the front plate are performed by a micro switch or a proximity switch arranged on the slide line of the slide table.

(Function) According to the above configuration, when the screw shaft rotates due to the operation of the motor, the screw shaft is engaged with the screw shaft, and
The rotationally stopped slide base slides along the screw shaft, extends the bent link via the operating rod, pushes the front plate forward, and opens the front plate.

The opening angle of the front plate is controlled by a micro switch or a proximity switch that is activated by the movement of the slide base, and by adjusting the mounting position of the micro switch or proximity switch and the length of the link, the opening angle of the front plate can be adjusted. It becomes possible to change.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. Reference numeral 1 denotes a hood body, and the front and lower surfaces are open with left and right side plates 1a and 1b made of flat metal plates, a back plate 1c, and a top plate 1d. The hood body 1 is formed into a box shape, and an exhaust device 2 is integrally assembled inside the hood body 1, and a front plate 3 is attached to the front opening of the hood body 1 so as to be openable and closable.

As is well known today, the exhaust system installed in the hood main body 1 has a motor, a fan, a filter, etc. housed in a casing, and an exhaust duct 4 is connected to the exhaust port of the exhaust system. .

The front plate 3 includes a front plate 3a and a substantially triangular side plate 3 fixedly protruding from both sides of the back surface of the front plate 3a at right angles.
The upper end of the front plate 3a of the front plate 3 is attached to the front end of the top plate 1d of the hood body 1 with a hinge 5 so as to be rotatable in the front and rear direction, and the side plates 3b and 3c are Left and right side plates 1a, 1
It is stored inside b.

A driving means 6 composed of a motor 7, a screw shaft 8, a slide base 9, and micro switches 10 and 11 is vertically fixed to the inner surface of the back plate 1c of the hood main body 1 constructed as described above, and the motor 7 is operated. The operating rod 1 is attached to the slide table 9 which slides in the axial direction by
The other end 12b of the operating rod 12 is connected to a link rod 14a, which is pivotally connected to a mounting piece 13 fixed to the back plate 1c of the hood body 1 and a side plate 3b of the front plate 3. 14b.

The slide base 9 in the drive means 6 has a cover 15
It is fitted into a guide elongated hole 16 formed in , and is stopped from rotating, and is slid in the axial direction by the rotation of the motor 7.

The motor 7 is a motor that can rotate in the forward and reverse directions, and the control to stop the motor 7 in the forward and reverse rotations and the opening/closing angle control of the front plate 3 are performed using microcontrollers arranged and fixed at intervals on the slide line of the slide table 9. switch 10,
11, the micro switch 1
0 and 11 are turned on and off by pushing a pin 17 fixed to the slide table 9. The forward rotation and reverse rotation of the motor 7 is started by a push button switch 18.

The positions of the microswitches 10 and 11 determine the movement stroke of the slide base 9, thereby limiting the movement of the operating rod 12 and determining the opening angle (positioning) of the front plate 3. Therefore, by changing the installation positions of the micro switches 10 and 11 and adjusting the lengths of the link 14 and the operating rod 12, the opening and closing angle of the front plate 3 can be changed.

Furthermore, by connecting the power source of the exhaust device 2 and the ventilation fan to the micro switches 10 and 11, the exhaust device 2 and the ventilation fan can be operated in conjunction with the opening/closing movement of the front plate 3. Note that the exhaust system 2 and the ventilation fan may be operated in any manner such as to operate after the front plate 3 is fully opened, or to operate at the same time as the front plate 3 starts to open. (See Figure 4) (Effects of the invention) Since the range hood of the invention is constructed as described above, the front plate can be automatically opened and closed by the motor.

Therefore, it has been difficult to increase the size of conventional flap-type range hoods consisting of a mechanism that opens and closes manually, but it is now possible to produce large-sized flap-type range hoods by opening and closing the motor according to the present invention.

In addition, by moving the position of the switch that controls forward and reverse rotation of the motor and adjusting the length of the link, the opening/closing angle of the front plate can be changed, and it can be applied to other models.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal side view, Fig. 2 is a partially cutaway front view, Fig. 3 is a longitudinal side view showing the front plate in an open state, and Fig. 4 is a circuit diagram. It is. In the figure, 1... hood body, 2... exhaust system, 3
...Front plate, 7...Motor, 9...Slide stand, 1
2... Operating rod, 14... Link.

Claims (1)

[Scope of utility model registration request] It is a flap type range hood in which a front plate is attached to the front opening of the hood body equipped with an exhaust device so that it can be opened and closed from the top, and the slide base slides in the axial direction by the rotation of a motor on the side of the hood body. A range hood in which one end of an operating rod is connected to the slide base, and the other end of the operating rod is connected to a bendable link that connects the hood body and the front plate.