JPH0213869Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a ventilation fan whose front surface can be opened and closed using a decorative plate.

[Technical background of the invention and its problems] Conventionally, in ventilation fans, a decorative panel is provided on the main body built into the room wall so that it can be opened and closed via a hinge, etc., and when the ventilation operation is stopped (when not in use) A device whose front surface is covered with the decorative board to improve the appearance is provided.

However, in the conventional type mentioned above, the decorative board is connected to the outer frame of the main body by a hinge etc.
The reality is that it is difficult to remove the decorative laminate, and when cleaning the decorative laminate, it is necessary to do so with the decorative laminate still attached to the main body, especially when the main body is located high on the room wall. When doing so, there was a problem in which a great deal of labor was required.

Therefore, in recent years, it has been considered to attach the decorative panel to a decorative frame that can be easily removed from the main body. A boss part is integrally formed on the back of the decorative board, a metal mounting plate with a support part projecting from the boss part is fixed with self-tapping screws, and the support part of the mounting plate is attached to the decorative frame. Although it has been considered that the boss be pivotally mounted via a shaft, this configuration has the problem that the protrusion of the boss portion causes so-called sink marks on the front surface of the decorative board, which impairs the appearance. Since the self-tapping screws are screwed directly into the synthetic resin boss, the self-tapping screws may loosen due to aging of the synthetic resin, or may become engraved by the self-tapping screws due to repeated opening and closing of the decorative board. There is a risk that the screw thread of the boss may be damaged, and the self-tapping screw may eventually come out of the boss and the decorative board may fall off.

[Purpose of invention]

This idea was made in view of the above circumstances.
The purpose of this is to provide the decorative board with a good appearance, to prevent the decorative board from falling off accidentally, and to open the decorative frame by pressing one side of the decorative board. The purpose is to provide a ventilation fan that is free from twisting and deforming.

[Summary of the idea]

The present invention is arranged so that it protrudes forward by passing through the upper part of the decorative frame on one side in the lateral direction and outside the bell mouth, and is operated by an operating mechanism provided on the main body side to open the decorative board. It has a lever for pushing it open, a support part rotatably attached to a pivot part provided on the upper part of the decorative frame, and a receiving part on one side that receives the pressing force of the lever, and also has a support part that is rotatably attached to a pivot part provided on the upper part of the decorative frame, and has a receiving part on one side that receives the pressing force of the lever, and is arranged in the horizontal direction of the decorative board. A metal mounting plate arranged in a horizontally elongated shape corresponding to the width at the upper part of the back side of the decorative board, a metal backing plate arranged at the front side of the decorative board, and the mounting plate and the backing plate are connected to each other. It consists of screws that are tightened to clamp the decorative laminate, and a surface plate that is fixed to the front surface of the decorative laminate and covers the backing plate and the screws.

[Example of idea]

An embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 1 and 2, 1 is a main body built into the chamber wall, and 2 is its outer frame. A well-known blower 5 consisting of blades 3 and a motor 4 is disposed within the outer frame 2, and a wind pressure release type shutter 6 is disposed on the rear surface of the outer frame 2 so as to be openable and closable. . Reference numeral 7 denotes a synthetic resin decorative frame having a bell mouth 8 in the center thereof, and is removably attached to the front surface of the outer frame 2 by fitting. A plurality of, for example two, pivot parts 9 are provided protruding from the upper end portion of the decorative frame 7. Reference numeral 10 denotes a decorative board made of synthetic resin that covers the front surface of the decorative frame 7, and a metal mounting plate 11 is attached to the rear side of the upper part as will be described later. As shown in FIG. 5, this mounting plate 11 has a horizontally elongated shape corresponding to the lateral width of the decorative board 10, and supports portions 12 are provided on both left and right sides of the upper portion corresponding to the pivot portions 9.
is protrudingly provided, and a connecting portion 13 as a receiving portion is protrusively provided on one side in the lateral direction, for example, on the left side of the lower portion. The decorative board 10 is provided on the decorative frame 7 so that its front surface can be opened and closed by pivotally connecting the supporting portion 12 of the mounting plate 11 to the pivot portion 9 via a shaft 14 so as to be rotatable in the vertical direction. There is.

On the other hand, 15 is an opening/closing mechanism for the decorative board 10, and in FIG. 2 showing the overall configuration of this opening/closing mechanism 15, 1
Reference numeral 6 denotes a support piece attached to the left side, which is one side in the lateral direction, of the decorative frame 7, and a link 17 is pivotally connected to this support piece by a shaft 18. Reference numeral 19 denotes a lever, which is inserted through a slit 20 formed on one side of the upper part of the decorative frame 7 in the lateral direction and outside the bell mouth 8, for example, at the upper left side of the front surface, and has a front end that projects forward. It is pivotally connected to the connecting portion 13 of the mounting plate 11 by a shaft 21, and the intermediate portion existing within the decorative frame 7 is pivotally connected to the link 17 by a shaft 22. Reference numeral 23 denotes a rotating body which is pivotally connected to a mounting piece 24 attached to the left side of the outer frame 2 via a shaft 25, and has a contact 26 protruding from one end thereof. Reference numeral 27 denotes a tension spring tensioned between the outer frame 2 and the other end of the rotating body 23, which keeps the rotating body 23 in the direction of arrow A.
It is biased to rotate in the direction. And the rotating body 2
The rear end of the lever 19, which extends diagonally downward, is in contact with the contact 26 of No. 3 so as to be able to come into contact with and separate from the contact 26. Reference numeral 28 denotes an operating mechanism for operating the lever 19 via the rotating body 23. An operating rod 30 is inserted into a switch case 29 attached to the front lower part of the outer frame 2 so as to be movable up and down. A drawstring 31 is attached to the lower end, and a connecting rod 32 is installed between the upper end of the operating rod 30 and the other end of the rotating body 23. A switch for turning on and off the motor 4 and a lock mechanism (both not shown) are provided in the switch case 29, and when the operating rod 30 is pulled down, the switch is turned on and the lock mechanism is activated. Operating rod 30
When the lever is locked in the lowered position and the operating rod 30 is pulled down again, the locking mechanism is unlocked.

Now, in FIGS. 4 and 5 showing the attachment structure of the mounting plate 11 to the decorative board 10, reference numeral 33 denotes mounting pieces bent in a substantially L-shape on both left and right sides of the mounting plate 11; A screw hole 34 is formed in this by screwing a female thread into a small hole formed by burring. Reference numeral 35 denotes a bulge formed on both left and right sides of the upper part of the decorative board 10 so that the front side becomes a recess 36 and protrudes toward the back side.
A through hole 37 is formed corresponding to the screw hole 34 of No. 3. Reference numeral 38 denotes a metal backing plate formed to a size that can be fitted into the recess 36, and has a small hole 39 corresponding to the through hole 37 formed therein. Then, the mounting plate 11 is placed on the back side of the decorative board 10 so that its mounting piece part 33 is brought into contact with the bulging part 35, and the patch plate 38 is placed in the recessed part 3 on the front side of the decorative board 10.
Address to the back side of 6. Then, attach the screw 40 to the decorative board 1.
0 through the small hole 39 of the backing plate 38 and the through hole 37 of the decorative board 10 in order and screwing it into the screw hole 34 of the mounting plate 11 from the front side of the backing plate 38. They are tightened together to sandwich the bulge portion 35 of the decorative board 10. After attaching the mounting plate 11 to the decorative board 10 in this way, a synthetic resin surface plate 41 that is one size smaller than the front surface of the decorative board 10 is attached to the front surface of the decorative board 10.
are fixed by adhesive or the like, thereby covering the recess 36, the backing plate 38, and the screw 40 with the surface plate 41.
In this case, the length B of the screw 40 is larger than the gap C between the head 40a and the surface plate 41, as is the sum D of the threaded length with the screw hole 34 and the length protruding from the screw hole 34. It is set so that

Next, the operation of the above configuration will be explained. First, as shown in FIGS. 1 and 2, it is assumed that the ventilation fan is in a stopped state and the decorative board 10 covers the front surface. When the drawstring 31 is pulled down from this state, the operating rod 30 and the connecting rod 32 are pulled down, and the rotating body 23 rotates in the direction opposite to the arrow A against the spring force of the tension spring 27. Due to this rotation of the rotating body 23, the lever 19 is pushed by the contact 26 and moves diagonally upward in a substantially straight line so as to advance forward from the decorative frame 7, and this movement causes the decorative board 10 to be pushed. The decorative frame 7 is rotated upwardly around the shaft 14 so as to be raised, and the front surface of the decorative frame 7 is opened as shown in FIG. At the same time, the locking mechanism in the switch case 29 locks the operating rod 30 in the lowered position to hold the rotating body 23 and thus the decorative plate 10 in its open position, and the switch is turned on to energize the motor 4. As a result, the blades 3 are rotationally driven, and the shutter 6 opens under the wind pressure, thereby performing ventilation operation. Also, in this operating state, the drawstring 31
When pulled down slightly, the lock of the operating rod 30 is released, and the rotating body 23 rotates in the direction of arrow A while pulling up the linking rod 32 and the operating rod 30 by the spring force of the tension spring 27. Then, the decorative plate 10 rotates downward while pushing the lever 19 back to its original position due to its own weight, and closes the front surface of the decorative frame 7 as shown in FIGS. 1 and 2. On the other hand, the upward movement of the operating rod 30 turns off the switch in the switch case 29, cutting off the power to the motor 4, and thus the ventilation operation is stopped.

Now, to remove the decorative board 10 for cleaning,
It is only necessary to remove the decorative frame 7 from the main body 1, and thus the decorative board 10 can be easily removed from the main body 1.

According to the above configuration, the decorative board 1 is moved by the lever 19.
0, the connecting portion 13 receives a pressing force from the lever 19 via the shaft 21. This lever 19
Since there is a bell mouth 8 surrounding the blade 3 in the center of the decorative frame 7, this bell mouth 8 must be avoided. In this case, lever 19
If these levers are provided on both the left and right sides, the structure becomes extremely complicated because the operations of the levers on both sides must be synchronized. Taking this situation into consideration, only one lever 19 is arranged so as to be inserted through the slit 20 at the upper left side of the decorative frame 7. For this reason, lever 19
The pushing-opening force acts on a portion (connecting portion 13) that is biased to the left with respect to the mounting plate 11. however,
In this embodiment, the mounting plate 11 has a horizontally elongated shape corresponding to the lateral width of the decorative board 10, and is made of metal and has considerable rigidity, so it will not twist even if a pressing force is applied to a portion on one side. It will not be deformed. Therefore, substantially the entire upper part of the decorative board 10 is attached to the mounting plate 1.
1, the decorative board 10 can be supported with a substantially uniform force, and therefore the decorative board 10 can be opened without being twisted and deformed, and even during ventilation operation, it is supported by the mounting plate 11 in a flat state rather than in a torsionally deformed state. There is no risk of plastic deformation into a twisted state.

In addition, by screwing the screws 40 into the screw holes 34 of the mounting plate 11, the mounting plate 11 and the backing plate 38 are tightened together and clamped to the bulge 35 of the decorative board 10. The tightening force of 40 is for mounting plate 1.
1 and the backing plate 38, which provides high strength and safety, and is different from the conventional method in which the screws for fixing the mounting plate were screwed into the boss part of the decorative board. In contrast, there is no risk that the thread of the screw hole 34 will be damaged or the screw 40 will become loose due to aging of the resin. Therefore, the decorative board 10 is the decorative frame 7.
It is safe because there is no risk of it coming off the mounting plate 11 which is pivoted on the side and falling off carelessly. Furthermore, since the bulging portion 35, the backing plate 38, and the screw 40 can be covered and hidden by the surface plate 41, the appearance will not be impaired.

Further, as in this embodiment, the screw hole 34 is inserted into the mounting plate 1.
1, and the length B of the screw 40 is smaller than the gap C between the head 40a and the surface plate 41 in the screw hole 3.
If the sum D of the screwing length with 4 and the length of protrusion from the screw hole 34 is set to be larger, even if the screw 40 is loosened, the head 40a can be attached to the surface plate 4.
1, the screw 40 is prevented from further screwing back and the screw 40 will not come out of the screw hole 34, so that the decorative board 10 can be more reliably prevented from falling off.

In addition, without forming the screw holes 34 in the mounting plate 11, the mounting plate 11 and the backing plate 3 are attached with screws and nuts.
8 may be tightened together.

(Effects of the invention) As explained above, the present invention provides a support that is pivoted to the pivot of the decorative frame even if a lever for pushing open the decorative panel made of synthetic resin is provided on one side in the horizontal direction. A mounting plate is formed of metal into a horizontally elongated shape corresponding to the lateral width of the decorative board, and has a receiving part on one side that receives the push-opening force of the lever, and the decorative board is attached to the decorative frame via this mounting plate. Since it is supported so that it can be rotated to open and close, even if the lever presses one side of the decorative board including the mounting plate, there is no risk that the synthetic resin decorative board will be twisted and deformed. In addition, since the metal mounting plate and the metal backing plate are tightened with screws and attached to the synthetic resin decorative board, the tightening force of the screws is equal to the metal mounting plate and the backing plate. It is safe in terms of strength because it is received by the entire part sandwiched between the two parts, and unlike the conventional method where the screw is directly screwed into the boss part formed on the decorative board made of synthetic resin, the boss part There is no inherent problem of screw thread breakage, and there is almost no chance of screws loosening due to aging of the resin, so there is no risk of the decorative board accidentally falling off, and the cover plate and screws can be hidden by the top plate. Therefore, there is no risk of damaging the appearance, and other excellent effects can be achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal side view, Fig. 2 is a longitudinal side view cut at a different part from Fig. 1, and Fig. 3 shows the decorative board in a fully opened state. The longitudinal side view, FIGS. 4 and 5 are an enlarged longitudinal side view and an enlarged exploded perspective view of essential parts. In the figure, 1 is the main body, 7 is a decorative frame, 8 is a bell mouth, 9 is a pivot, 10 is a decorative board, 11 is a mounting plate,
12 is a support part, 13 is a connecting part (receiving part), 19 is a lever, 28 is an operating mechanism, 33 is a mounting piece part, 34
38 is a screw hole, 38 is a backing plate, 40 is a screw, and 41 is a surface plate.

Claims (1)

[Scope of utility model registration request] The front surface of the main body to which a decorative frame having a bell mouth is removably attached is opened and closed by a decorative board made of synthetic resin, and the front surface of the main body is removably attached, and the front surface of the main body is opened and closed by a decorative plate made of synthetic resin, and the upper part of the decorative frame is located on one side in the lateral direction and is located further than the bell mouth. A lever that is inserted through the outer portion and protrudes forward and is operated by an operating mechanism provided on the main body side to push open the decorative panel; and a pivot portion provided at the top of the decorative frame. The back surface of the decorative board has a supporting part that is pivotally connected to be rotatable to open and close, and has a receiving part on one side that receives the push-opening force of the lever, and has an oblong shape corresponding to the lateral width of the decorative board. A metal mounting plate placed on the upper side, a metal backing plate placed on the front side of the decorative laminate, and a screw for tightening the mounting plate and the backing plate to each other to sandwich the decorative laminate. and a surface plate fixed to the front surface of the decorative board and covering the patch plate and screws.