JPH02592Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a ventilation system having a rotatable and removable hood front plate pivoted to the front opening of a hood body.

[Technical background of the invention]

Conventionally, in a ventilation device called a range hood fan, a blower, such as a ventilation fan, is installed in a hood body with openings on the front and bottom surfaces, and a hood front plate is rotated to open and close the fan through the front opening of the hood body. A so-called push-off type switch is provided in the vicinity of the front opening of the hood body to be movable and removable, and further includes a so-called push-off type switch that turns off when an operator is pressed and cuts off the energization path of the motor of the ventilation fan. When the hood front plate is closed, the hood front plate presses the switch operator to turn off the switch, thereby cutting off the electrical current to the motor, and when the hood front plate is opened, the hood front plate operates the switch. A structure is provided in which a motor conduction path is formed by releasing the pressure on the child and turning on the switch.

[Problems with background technology]

In the conventional configuration, when the hood front plate is removed from the front opening in order to clean the inside of the hood body, the pressure on the switch operator by the hood front plate is released, so the switch is turned on and the ventilation fan motor is turned on. This is extremely dangerous as it creates an energized path, and for this reason, it is necessary to pull out the plug of the power cord line from the power outlet before cleaning, resulting in poor cleaning efficiency.

[Purpose of invention]

The present invention was developed in view of the above circumstances, and its purpose is to automatically turn off the energizing path of the blower motor when the hood front plate is removed from the front opening of the hood body. Then,
The objective is to provide a ventilation system that is easy to clean.

[Summary of the idea]

The present invention provides a hood body with a hood front plate and a push-off type switch, wherein the hood body has an operating member that is always located within the hood body and is biased to press an operator of the switch. is displaceably provided, and a connecting member is provided on the hood front plate so as to be removably connected to the operating member, so that when the hood front plate is attached to the hood main body, the operating member is attached to the hood front plate. The switch is characterized by a structure in which the switch is pressed and released in response to closing and opening of the hood front plate, and when the hood front plate is removed from the front opening of the hood main body, the operation member The device attempts to automatically turn off the switch by pressing the switch's operator.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings.

First, in Fig. 1, 1 is a rectangular box-shaped hood main body, the lower surface of which is open, and the front surface that is open except for the upper front plate 1a, and both left and right ends of the front surface of the front plate 1a. A substantially U-shaped support piece 2 (only one of which is shown) is fixed to the support piece 2 . Reference numeral 3 denotes a ventilation fan which is an air blower attached to the upper part of the back plate 1b of the hood body 1 so as to protrude rearward, and is composed of an outer frame 4, a motor 5, a fan 6, a bell mouth 7, a shutter 8, and the like. 9 is a closing plate attached to the front plate 1a of the hood body 1;
The distal end thereof is oriented rearward and diagonally downward within the hood main body 1, and a presser member 10 made of a leaf spring is attached to the distal end. Reference numeral 11 denotes a closing plate attached to the lower part of the back plate 1b of the hood body 1, the tip of which is oriented obliquely upward and forward inside the hood body 1, and a holding member 12 is attached to the tip. installed. Reference numeral 13 denotes a filter, which is detachably attached to the closing plates 9 and 11 with its front end pressed by the holding member 10 and its rear end inserted and held by the holding member 12. 14 is a blockage plate 9 in the hood body 1
A push-off type switch 16 that turns off when the operator 15 is pressed is disposed inside the cover, and the operator 15 passes through the cover 14 and extends forward. It is prominent. This switch 16 is connected to the plug 1.
Power cord wire 17 and lead wire 18 with 7a
It is interposed in the energizing path of the motor 5 of the ventilation fan 3 formed by. 19 is an operating member;
This is pivotally mounted on the lower front surface of the closing plate 9 in the hood main body 1 so as to be rotatable around a rotational fulcrum 19a at the upper end, and the middle part is connected to the operator 1 of the switch 16.
5, and a substantially U-shaped engagement portion 20 is rotatably supported at the lower end. A tension coil spring 2 is provided between the engagement portion 20 at the lower end of the operating member 19 and the cover 14.
1 is tensioned, and by the spring force of this tension coil spring 21, the operating member 19 is always urged to rotate in the direction of arrow A, and the hood body 1 together with the engaging portion 20 is rotated.
The intermediate portion of the operating member 19 is arranged to press the operating element 15 of the switch 16. Reference numeral 22 denotes a stopper portion protruding from the front surface of the cover 16, which restricts the amount of rotational displacement of the operating member 19 in the direction of arrow A. On the other hand, reference numeral 23 denotes a rectangular hood front plate, and supporting pieces 24 (only one of which is shown) are fixed to both the left and right ends of the upper end of the back surface of this front plate. The hood front plate 23 is located in front of the front opening of the hood body 1, and its support piece 24 is rotatably and detachably supported by the support piece 2 of the hood body 1.
25 is a connecting member, the upper part of which is connected to the hood front plate 2
3, the lower part is oriented diagonally downward to the rear, and the lower end thereof is removably engaged with the engaging part 20 of the operating member 19.
The connecting member 25 is connected to the operating member 19 via the engaging portion 20 when the hood front plate 23 is attached to the hood main body 1, so that the operating member 19 is connected to the rotation of the hood front plate 23. It is designed to be linked. 26 is a lock lever 2 that is movable in the front and back direction.
7, which is fixed to the lower inner surface of the side plate 1c of the hood main body 1, and the front end of the lock lever 27 is attached to and detached from the lower back surface of the hood front plate 23 by screws (not shown). When the hood front plate 23 is rotated by a predetermined angle in the direction of arrow B, the hood front plate 2
3 in a predetermined open position.

Next, the operation of the above configuration will be explained. First, when the hood front plate 23 is rotated in the direction of arrow B, which is the opening direction, from the state shown in FIG. In conjunction with this, the operating member 19 is rotated via the connecting member 25 against the spring force of the tension coil spring 21 in the direction opposite to the direction of arrow A, that is, in the direction of arrow B. Release the pressure on the operator 15 of the switch 16 (see FIG. 2). As a result, the switch 16 is turned on to form an energizing path for the motor 5 of the ventilation fan 3, and the fan 6 is rotated to suck indoor air into the hood body 1 from the opening at the bottom, and the sucked air is The air is discharged outdoors via the filter 13 and the outer frame 4 of the ventilation fan 3, and ventilation operation is then started. Incidentally, when the hood front plate 23 is rotated by a predetermined angle in the direction of arrow B, it is locked in the open position by the locking mechanism 26. Next, when stopping the ventilation operation, once a rotational force is applied to the hood front plate 23 in the closing direction (direction opposite to the direction of arrow B), and then a rotational force is applied again in the opening direction (direction of arrow B). The locking of the hood front plate 23 by the locking mechanism 26 is now released, and therefore, if the hood front plate 23 is rotated again in the closing direction, it will return to the closed state shown in FIG. When the ventilation fan 3 is turned off, the energizing path of the motor 5 of the ventilation fan 3 is cut off.

On the other hand, when removing the hood front plate 23 from the front opening of the hood body 1 in order to clean the inside of the hood body 1, the lock lever 27 of the lock mechanism 26 and the hood front plate 23 are separated by removing screws (not shown). Then, when the hood front plate 23 is moved upward to separate the support piece 24 from the support piece 2 of the hood body 1, the connection member 25 and the engagement portion 20 of the operating member 19 are automatically engaged. was released,
The hood front plate 23 is now removed from the hood body 1, and when folded, the operating member 19 is attached to the connecting member 2.
Tension coil spring 21 because it is separated from 5
The spring force causes the switch 16 to rotate in the direction of arrow A and press the operator 15 of the switch 16, and the switch 16 is automatically turned off (see FIG. 3).

According to this embodiment, the following effects can be obtained. That is, the hood main body 1 is provided with an operating member 19 which is normally biased to press the operator 15 of the switch 16, and the connecting member 25 provided on the hood front plate 23 is connected to the engaging portion 20 of the operating member 19. Since the hood front plate 23 is connected by engagement with the hood front plate 23, the operation member 19 can be linked to the hood front plate 23 while the hood front plate 23 is attached to the hood main body 1, and the operating member 19 can be connected to the hood front plate 23 in response to the closing and opening operations of the hood front plate 23. The operating member 19 presses and releases the pressure on the operator 15 of the switch 16.
When the hood front plate 23 is removed from the hood body 1, the connecting member 25 and the engaging portion 20 of the operating member 19 are separated, and the operating member 19 is connected to the switch 1.
Since the switch 16 is turned off by pressing the operator 15 of 6, when removing the hood front plate 23 to clean the inside of the hood body 1, the power cord wire 17
There is no need to unplug it from the power outlet,
The cleaning work efficiency is improved accordingly. or,
When the hood front plate 23 is removed from the hood body 1, the operating member 19 is attached to the hood body 1 together with the engaging portion 20.
Since the operating member 19 is positioned inside, the operating member 19 does not protrude from the hood body 1. Therefore, when the hood front plate 23 is removed and the hood front plate 23 is removed during the installation of the hood main body 1, the operating member 19 may be accidentally touched. It is possible to prevent deformation of the operating member 19 due to a collision with a human body or an object, and further damage to the switch 16. Moreover, even when the hood front plate 23 is attached or detached, the hood front plate 23 can be If you accidentally hit the operating member 19 and the switch 16
Therefore, the hood front plate 23 can be easily attached and detached without paying special attention.

Particularly, according to this embodiment, since the pivot point 19a of the operating member 19 is located below the pivot point (support piece 24) of the hood front plate 23, the engaging portion 20 at the lower end of the operating member 19 Since the rotation radius of the connecting member 25 provided on the hood front plate 23 is smaller than the rotation radius of the connecting member 25 provided on the hood front plate 23, as the rotation angle of the hood front plate 23 in the direction of arrow B increases, the engagement of the operating member 19 becomes smaller. The degree of engagement of the connecting member 25 with the joint portion 20 is increased, the engagement becomes reliable, and it becomes difficult to disengage.

In the above embodiment, the operating member 19 is provided on the hood main body 1 so as to be displaced by rotation, but the invention is not limited to this. For example, the operating member 19 may be provided so as to be displaced by sliding. 19 and the connecting member 25 are connected by the engaging portion 2 of the operating member 19.
0 by engaging the connecting member 25, the form of connection is not limited to this, and for example, connection by magnetic force may be used.

In addition, it goes without saying that the present invention is not limited to the embodiments described above and shown in the drawings, and can be implemented with appropriate modifications within the scope of the invention.

[Effect of idea]

As explained above, the present invention is provided with a displaceable operating member which is always located within the hood body and is biased to press the switch operator, and which is disposed on the front plate of the hood. A connecting member is provided that is connected to the operating member when the front plate is attached to the hood main body, so that when the hood front plate is removed from the hood main body, the operating member presses the switch operator and the switch is activated. Since the hood is automatically turned off, there is no need to unplug the power cord from the power outlet when cleaning the hood, making cleaning easier. At times, the operating member does not protrude from the hood body, so there is no risk of damaging the operating member and, by extension, the switch during installation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1 and 2 are longitudinal sectional views in different operating states, and FIG. 3 is a longitudinal sectional view with the hood front plate removed. In the drawings, 1 is a hood body, 3 is a ventilation fan, 5 is a motor, 15 is an operator, 16 is a switch, 19 is an operating member, 23 is a hood front plate, and 25 is a connecting member.

Claims (1)

[Scope of utility model registration request] a hood main body with an open front and bottom surface and equipped with a blower; a hood front plate rotatably and removably mounted on the front opening of the hood main body to open and close the hood main body; a switch that is turned off when the switch is pressed to cut off the energization path of the motor of the blower; and a switch that is displaceably provided in the hood body and is normally positioned within the hood body to press the operator of the switch. an energized operating member; and a connecting member provided on the hood front plate and removably connected to the operating member when the hood front plate is attached to the hood main body to interlock the operating member with the hood front plate. A ventilation system equipped with.