JPS5910511Y2 - wind fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure and arrangement of a retractable fan casing of a wind fan.

A conventional wind fan will be explained using diagrams.

Figures 1 and 2 show a wind fan mounted on a window frame using a mounting frame 1, in which a fan 20 has an upper part supported by a bearing 4 attached to a fan casing 2 with screws 3, and a lower part supported by a motor fixed by a motor base 5. It is directly connected to 6.

The dial type handle 8 supported by the fulcrum A7 is supported at the upper part by the casing support plate 9, and the lower part engages with the fan casing 2 placed on the pedestal 19 on the motor 6 and can be rotated at point B10. I have to.

The motor base 5 and casing receiving plate 9 are fixed with set screws 11.
．． 12 is fixed to the front panel 13, and the front panel 13 is provided with a grill 14, a switch part 15, and a fin 16. A rear panel 18, on which a filter 17 is attached, is attached to the opposite side of the front panel 13 via the fan casing 2. It's on the side.

A wind fan is attached to a window frame and used for the purpose of introducing outside air. When the power is turned on by operating the switch part 15, the motor 6 is started and the directly connected fan 20 is supported at the upper part by the bearing 4 and rotates. .

When the fan casing 2 is in the state shown in Fig. 1, the air flows through the rear panel 18, filter 17,
When the fan casing 2, fan 20, fins 16, and grill 14 are attached to a window in this order, the structure is such that outside air is introduced into the room.

When the fan casing 2 is brought into the state shown in Fig. 2 by rotating the dial-type handle 8 supported at the fulcrum A7 and engaged at the point l-BIO with a finger, the air flow when the fan 20 is rotating is as shown by the arrow. As shown, grill 14, fin 16, fan casing 2, fan 20, filter 1
7 and rear panel 18, and when attached to a window, the structure is such that indoor air is exhausted to the outdoors.

The conventional window fan is constructed as described above, and the center of the fan casing 2 is located at the center of the front panel 13, and is rotated by the dial type handle 8 when switching between intake and exhaust.

In the intake state in FIG. 1, a large area is required on the side of the air passage indicated by the arrow in order to reduce resistance to the flow of air, but a large area is not necessary on the opposite side because no air flows.

However, since the fan casing 2 is cylindrical, the right
The same size was required on the left side, and the left side, where no air flows, also had the disadvantage of requiring a large area.

The present invention aims to eliminate unnecessary space by devising the structure and arrangement of the fan casing in order to eliminate the above-mentioned drawbacks.

Examples of the present invention will be described below.

That is, in FIGS. 3 to 8, 29 is a main body of the wind fan, and 30 is a mounting frame to be attached to a window, etc., which is attached so that the main body 29 of the wind fan can be slid up and down and fixed with screws or the like. There is.

31 is a front grill, 32 is a rotatable fin for adjusting the wind direction,
33 is a switch force bar, and 34 is a switch section, which is inserted into the switch force bar 33 from the front side, and the operating knobs etc. are exposed to the outside on the front side.

Reference numeral 35 denotes an upper convex portion, which is located to the left of the center line CC of the wind fan main body 29 when viewed from the front, and is located toward the rear when viewed from the side or in plan.

Reference numeral 36 denotes a lower convex portion, and its position differs from that of the upper convex portion 35 only in its vertical position, and the above-mentioned positional relationship is the same.

Reference numeral 37 denotes a front panel having a rectangular U-shape (FIG. 4) in cross section, and includes an airflow guide 37a and the above-mentioned double convex portions 35. 3
6 and the switch box 33 etc., and the side walls 37b and 37c, the front wall 37d to which the grille 31 is attached, and the upper convex part 35 are integrally formed. It integrally includes an upper wall 37e and a lower wall 37f on which a lower convex portion 36 is integrally formed.

37g is a rear opening formed at the rear of the front panel 37; 37h is an upper through hole formed through the upper convex portion;
7 i is a lower through hole provided through the lower convex portion, 37
j is inside the upper convex part 35, 37k is the lower convex part 36
The guide grooves 38 formed on the inside of the rear openings 37g and connected to the rear openings 37g are a pair of C-shaped flat cross-section frames, each of which has a plate-like engagement piece 3.
8a, and is attached to the rear inner wall surfaces of the side walls 37b and 37C.

Reference numeral 38b indicates a vertically long rectangular opening formed inside the frame 38, reference numeral 39 indicates a screw, reference numeral 40 indicates a flexible filter holding rod, and a pivot portion 40a is bent into an L-shape at the upper end. have.

Reference numeral 41 denotes a filter, which has reinforcing plates 41 a and 4 lb on both left and right sides that extend continuously from the upper end to the lower end, and the vicinity of one of the reinforcing plates 41 a is pressed by a filter presser rod 40 .

Reference numeral 42 denotes a metal rear panel that closes the opening 38b, and is provided inside the left and right sides, and its tip extends downward and closes to the frame 3.
A claw 42a that engages with the upper end of the engagement piece 38a of 8, and a large number of slots 42a that are shaped by cutting and bending to the right when viewed from the front and that engage the vicinity of the other reinforcing plate 4lb of the filter.
The shaft portion 42b is cut and shaped to form the above-mentioned pivot portion 40.
A bearing part 42C that pivotally supports one end of a, and a pivot part 40
A guide groove 42 for receiving the other end of a.A guide 42 having a guide groove d.
e, a positioning protrusion 42f that limits the axial movement of the pivot portion 40a, and a locking portion whose tip is bent into a U-shape and which locks the lower end of the filter presser rod 40 with the U-shaped tip. 42g and a pair of upper and lower protrusions 42h that stabilize the attachment of the filter 41.

43 is an opening provided in the rear panel 42 corresponding to the filter 41; 44 is a cross-flow fan housed in the front panel 37; and 45 is a cross-flow fan whose output shaft is connected to the rotating shaft of the cross-flow fan 44 and installed in the front panel 37. The housed motor 46 is a bearing holder made of resin, and has a protrusion 46a that fits into the upper through hole 37h, and a part of the protrusion 46a that is shaped by cutting and raising the upper through hole 37h. A vibration prevention pawl 46b elastically abutting against the inner wall, a plurality of bosses 46'd having recessed holes 46C, and a plurality of fixing pawls 46f having hooks 46e at the tips are integrated into one body. have.

The diameter φ1 of the large diameter portion of the bearing retainer 46 is slightly smaller than the inner diameter (width of the guide groove 37j) of the upper convex portion 35 when viewed from the front.

A bearing 48 supports the rotating shaft 44a of the lateral flow fan 44, and has a flange 48b having a plurality of through holes 48a.

49 is a fan casing, which includes an upper wall 49 a and a lower wall 49
b, and a pair of air flow guide walls 49 C and 49 d provided around the periphery at a predetermined interval.

49e is a large diameter opening provided in the upper wall 49a and through which the bearing 48 passes; 49f is a plurality of small holes provided in the upper wall 49a and having a diameter that allows the hook 46e of the bearing holder 46 to pass through; Reference numeral 49g denotes a plurality of columnar parts projecting from the upper surface of the upper wall 49a, which pass through the through hole 48a of the bearing 48 and fit into the recessed hole 46C of the bearing holder 46.

49 h is a disc portion protruding from the lower surface of the lower wall 49 b;
Its diameter φ2 is slightly smaller than the inner diameter (width of the guide groove k) of the lower convex portion 36 when viewed from the front.

50 is a motor presser attached to the fan casing 49, and has a plurality of elastic presser claws 50a.

Reference numeral 52 denotes a plurality of ribs attached to the fan casing 49, which together with the motor holder 50 support the motor 45 by supporting it.

Reference numeral 53 denotes a handle, which is inserted into the lower through hole 37 of the lower convex portion 36.
A cylindrical neck portion 53a that fits into the lower through hole 37i and has an outer diameter slightly smaller than the diameter of the lower through hole 37i, a spatula-shaped handle portion 53b, and this handle portion 53b and the neck portion 53.
The connecting portion 53C that connects the connecting portion 53A and the connecting portion 53C is formed integrally with resin.

53 d is a recessed hole formed on the lower surface of the neck 53 a;
Reference numeral 53e indicates the upper bottom of the recessed hole 53d, and reference numeral 54 does not indicate that the handle 53 is attached to the disk portion 49h of the fan casing 49 at the upper base 53e of the neck.

55 C is the center point of the front panel 37, 56 C is the fan 4
4, which is shifted by a predetermined distance L from the center point 55C.

To explain how to assemble the wind fan having the above structure, first, the fan 4 is attached to the fan casing 49.
4. After integrally assembling the motor 45, bearing holder 46, bearing 48, motor holder 50, rib 52, etc., insert the bearing holder 46 into the upper guide groove 37 through the rear opening 38b.
j into the front panel 37, and then insert the bearing retainer 46
The protrusion 46 a of the front panel 37 is connected to the upper through hole 37 h of the front panel 37 .
After this, or while performing the above-mentioned integration,
Insert the disk portion 49 h of the fan casing 49 into the front panel from the rear opening 38 b along the lower guide groove 37 h in the same manner as above, and then insert the disk portion 49 h of the handle 53 into the front panel.
3a is fitted into the lower through hole 37i of the front panel 37, the fan casing 37 and the handle 53 are connected with the screws 54.

A wind fan is attached to a window frame and used for the purpose of introducing outside air. When the power is turned on by operating the switch part 34, the motor 45 is started, and the fan 44, which is directly connected to the motor 45, is fixed with a bearing holder 46. The upper part is supported by a bearing 48 and rotates.

When the fan casing 49 is in the state shown in FIG.
, the fan casing 49, the fan 44, the fins 32, and the grill 31 are attached to the window in this order, so that outside air is introduced into the room.

When the bearing retainer 46 is inserted into the upper through hole 37 h of the upper convex portion 35 of the front panel 37, the through hole 37 h
There is a gap between the bearing holder 46 and the
The anti-vibration pawl 47 presses in one direction and, in combination with its elastic force, serves to prevent the bearing presser 46 from vibrating.

The upper support portion and the lower support portion supported by a handle 53 fixed by a screw 54 through the lower convex portion 36 of the front panel 37 are located at a position deviated to the left from the center position of the front panel 37, The fan casing 49 can be moved as shown in FIG. 5 by this operation.

In the state shown in FIG. 5, when the fan 44 is rotating, the air flows between the grill 31 and the fins 3 as shown by the arrows.
, fan casing 49, fan 44, filter 41
, rear panel 42 and is attached to a window in this order, the structure is such that indoor air is exhausted to the outdoors.

The bearing 48 is fixed by providing a small hole 49f in a part of the fan casing 49 and a columnar part 49g as shown in FIG.
Align the fixing pawl 46 f of the bearing holder 46 with the small hole 49 f of the fan casing 49, and then press the pawl 4
When 6 f is inserted into the small hole 49 f, the hook 4 of the claw 46 f
6 e contacts the lower surface of the upper wall 49 a of the fan casing 49, and the flange 48 b of the bearing 48 is sandwiched between the boss 46 d of the bearing holder and the fan casing upper wall 49 a to fix the bearing 48. doing.

To fix the filter 41, as shown in FIG.
0, and finally, the free end is hooked on the locking part 42g to complete the installation of the filter 41.

In order to fix the panel 42 to the front panel 37 after fixing the filter 41 in this state, as shown in FIG.
Pass the claws 42a provided on the left and right sides of the rear panel 42 through the notches between the retaining pieces 38a, hook them onto the upper ends of the retaining pieces 38a, and press the rear panel 42 downward to fix it. do.

In the above embodiment, the center of the fan casing is eccentric to the left side of the front panel, but the same effect can be obtained even if it is eccentric to the right side as shown in FIG.

The wind fan according to the present invention has a structure in which the center of the front panel 37 and the rotation axis of the fan casing 49 are offset, so the width of the wind fan is narrower, making it convenient to handle, and it can also be made smaller, reducing cost. I can do it.

[Brief explanation of the drawing]

Figure 1 is a diagram showing a conventional wind fan in an outside air intake state, where A is a vertical side view, B is a cross-sectional view taken along line B-B in Figure A in the direction of the arrow, and Figure 2 is a diagram showing a conventional wind fan in an exhaust state. Diagrams showing a conventional wind fan, where A is a longitudinal side view and B is a view A
A cross-sectional view taken along the line -B in the direction of the arrow; FIGS. 3 to 8 are views showing one embodiment of this invention; FIG. 3A is a front view, and FIG. 3B is a view of FIG. A vertical side view of the cross section taken along the line B-B in the direction of the arrow, Figure 4 is a cross-sectional plan view showing the outside air intake state, Figure 5 is a cross-sectional plan view showing the exhaust state, and Figure 6 is an enlarged view of the upper bearing part. Figure 7A is an enlarged perspective view of the rear panel as seen from the inside; Figure 7A is an enlarged perspective view of the opening in Figure 7A; Figure 8 is an illustration of the rear panel installation. FIG. 9 is an enlarged perspective view of the portion viewed from the rear side, and a cross-sectional plan view showing another embodiment of the present invention. In the figure, 37 is a panel, 49 is a fan casing, and 49 C and 49 d are air flow guides. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] In a window fan attached to a window, panel 37
The rotatable fan casing 49 housed therein is provided with air flow guide walls 49 C and 49 d that are disposed toward one side when viewed from the direction of the rotation axis thereof, and the rotation axis of the fan casing 49 is and the center of the panel 37 as viewed in the direction of the rotation axis are shifted from each other.