JPS6330910Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cover attachment/detachment device that does not use tightening screws to attach or detach the front cover of a ventilator.

In conventional ventilation devices, the front cover is fixed by hooking the upper edge of its opening onto the upper edge of the opening of the main casing, and fixing the lower edge on the opposite side to the main casing with screws. Therefore, fixing with such screws has the drawback that as the screws are tightened, the front cover is deformed and a gap is likely to be created between it and the main body casing.

This invention attempts to eliminate the above-mentioned drawbacks, and one embodiment of the cover attaching/detaching device of this invention will be described below. In other words, in the figure, 1 is the main casing, which houses a heat exchanger 2, a blower 3 for supplying outside air, and a blower 4 for discharging indoor air. Two systems of ventilation passages are formed, and an outside air intake pipe 5 and an indoor air exhaust pipe 6 provided in each of these passages are penetrated through the wall W, so that indoor and outdoor ventilation is performed through the heat exchanger 2. It's summery. Further, reference numeral 1a denotes an upward hook portion protruding from the upper edge of the opening of the main body casing 1, into which the engaging holes 7a provided at the upper edge of the opening of the front cover 7 are respectively hooked. .

On the other hand, an upward protrusion 7b is provided at the lower edge of the opening of the front cover 7, and a downward locking part 1b that engages with this protrusion protrudes from the lower edge of the opening of the main body casing 1. Furthermore, 8 is the main body casing 1
A notch groove 8a is provided on one side by a fixed tongue protruding from the center of the lower edge of the opening, and a part of the center part of the lower edge of these openings with the main body casing 1 and front cover 7 attached. As shown in FIG. 3, which is an enlarged cross-sectional front view, an engagement piece 9a integrally provided with a sliding knob 9 provided at the lower edge of the opening of the front cover 7 is removably inserted into the notch groove 8a. The front cover 7 is fixed in the attached state.

As described above, the cover attaching/detaching device of this invention attaches the front cover to the main body casing by hooking the upper edge of the front cover and pushing in its lower edge. Since it is maintained by locking the provided sliding knob, there is no deformation force applied to the front cover when it is completely installed, and therefore, when the front cover is installed, there is no difference between the front cover and the main body casing. This has the advantage that there is no gap as shown in the figure above, and there is no fear that the front cover will easily come off unless the sliding knob is disengaged.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the cover attaching/detaching device in the ventilation system of the present invention, Fig. 2 is a side view showing the main part in cross section in the installed state, and Fig. 3 is the main body casing and front view in the installed state. FIG. 2 is an enlarged front view partially sectional at the center of the lower edge of the opening of the cover. In the figure, 1 is the main body casing, 1a is the hook part, 1b is the locking part, 7 is the front cover, 7a
7b is a protrusion, 8 is a fixed tongue piece, 8a is a cutout groove, 9 is a sliding knob, and 9a is an engaging piece.

Claims (1)

[Scope of utility model registration request] The engaging hole 7a provided at the upper edge of the front cover 7 is hooked onto the hook portion 1a projected from the upper edge of the opening of the main body casing 1, and in this state, the hook portion 1a is caused to protrude from the lower edge of the opening of the main body casing 1. In the locking part 1b,
The protrusion 7b provided on the lower edge of the front cover 7 is engaged by pressing the lower edge of this cover, and the notch groove 8a of the fixed tongue piece 8 protruding from the center of the lower edge of the main body casing 1 is Engagement piece 9a provided on sliding knob 9 provided on the lower edge of the front cover
A ventilator cover attachment/detachment device that allows the cover to be inserted in a detachable manner.