JPH0114835Y2 - - 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]

Conventionally, ventilation fans have been provided with a decorative panel that can be opened and closed via a hinge on the main body that is built into the room wall, and when the ventilation operation is stopped (when not in use), the front surface is covered with the decorative panel to improve the appearance. What is offered is something designed to

[Problems with background technology]

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, it has been considered to attach the decorative board to a decorative frame that is removably attached to the main body so that it can be opened and closed via a hinge, so that when the decorative frame is removed from the main body, the decorative board can also be removed from the main body at the same time. ing.

However, even though it is possible to remove the decorative frame and decorative board from the main body, it is difficult to remove the decorative board from the decorative frame, and the two must be cleaned while still connected, which makes handling difficult. , which causes the problem that it becomes difficult to clean.

[Purpose of the invention] This invention was made in view of the above circumstances.
The purpose is to provide a ventilation fan in which not only the decorative board can be removed from the main body together with the decorative frame, but also the decorative board can be easily removed from the decorative frame so that both can be handled separately, and which can be easily cleaned. .

[Summary of the idea]

In the present invention, the decorative board is attached to a decorative frame that is removably attached to the main body, and for the purpose of this attachment, the decorative frame is provided with a plurality of support parts each having a bearing hole, and each support part is provided with a plurality of support parts each having a bearing hole. A plurality of connecting portions each having a bearing hole are provided in the decorative plate in accordance with the above, and a plurality of sets of supporting portions and a plurality of shaft portions corresponding to the connecting portions are located on the same axis so that the tips point in the same direction. A connecting member is formed integrally with a locking portion and a holding portion radially away from these shaft portions, and a stopper portion is provided on the decorative board corresponding to the locking portion of the connecting member. By forming each shaft part of the connecting member in a removable manner in the direction of the tip of the shaft part into the bearing hole of the support part and the connecting part, the decorative board can be opened and closed in the decorative frame and can be attached and detached. By rotating the connecting member around the shaft, the locking portion is locked to the stop portion to prevent the shaft from coming out of the bearing hole of the supporting portion and the connecting portion,
In addition, the lever of the opening/closing mechanism for opening and closing the decorative board comes into contact with the presser part to prevent the locking part from coming off the stop part, thereby preventing the decorative board from being removed from the main body as well as from the decorative frame. This makes it possible to easily remove it from the

[Example of idea]

Below, Figures 1 to 7 are related to the first embodiment of the present invention.
This will be explained with reference to the figures. 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 plastic 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, supporting portions 9 are integrally protruded from the upper end portion of the decorative frame 7, and a bearing hole 10 is concentrically formed in each of the supporting portions 9. Reference numeral 11 denotes a plastic decorative board that covers the front surface of the decorative frame 7, and a plurality of connecting parts 12, that is, two connecting parts 12, are integrally provided at the upper end portion in correspondence with the supporting parts 9, and each connecting part 12 has a Bearing holes 13 are formed concentrically. 14 is a connecting member formed by bending a metal wire, and arm portions 15 are provided on both left and right sides of the main portion 15.
a, and furthermore, a shaft portion 16,1 is provided at the tip end of both arm portions 15a, the tips of which both point in the same direction, for example, to the right.
7 are bent and formed integrally so as to be located on the same line. Then, both the connecting parts 12 are brought into contact with the outside of both the supporting parts 9, and in this state, the connecting members 14
The respective shaft parts 16 and 17 are removably inserted into the bearing holes 10 and 13 of the support part 9 and the connecting part 12 of each pair on the left and right in the direction of the tip of the shaft parts 16 and 17, and then the makeup is applied. A plate 11 is connected to the decorative frame 7 so as to be rotatable in opening and closing and also detachable. After inserting the shaft portions 16 and 17 into the bearing holes 10 and 13, the connecting member 14 is rotated about the shaft portions 16 and 17 in the direction opposite to the arrow F in FIG. As shown, the center of the main portion 15 of the connecting member 14 is in contact with a protrusion 11a protruding from the upper center of the decorative board 11. Also, the left arm part 1 as a locking part
At a position where 5a is away from the shafts 16, 17, the shafts 16, 17 is prevented from being removed. Reference numeral 18 denotes a cover that covers the back side of the upper part of the decorative board 11 on which the connecting member 14 is provided, and is fastened and fixed to the boss portion 11b by screws 19. In FIG. 3, 20 is an opening/closing mechanism, and 21 is a four-bar link mechanism that constitutes the main part thereof. This four-bar link mechanism 21 includes a support frame 22 that corresponds to a first link fixed to the upper left inner surface of the outer frame 2, and a second link that is supported by this support frame 22 by a shaft 23. A pulley 24, a connecting rod 26 corresponding to a third link whose one end is connected to the support frame 22 by a shaft 25, and two points on the one end side are connected to the outer periphery of the pulley 24 and the other end of the connecting rod 26, respectively. shafts 27 and 28
and a lever 29 corresponding to a fourth link connected by. In this case, the distance between the axes 23 and 25 and the distance between the axes 27 and 28 are set to be equal to each other, and the distance between the axes 23 and 27 and the distance between the axes 25 and 28 are set to be equal to each other,
As shown in FIG. 4, the lever 29 is constructed so as to move substantially linearly while always remaining parallel to the straight line B connecting the shafts 23 and 25, and thus the lever 29. Furthermore, the distance between the axes 23 and 27 and the distance between the axes 25 and 28 are
5a is set equal to the length l, and the shaft portion 16 is located on the straight line B, and the shaft portion 16 is located on the straight line A so that the straight lines C and D connecting the respective axes are parallel to the arm portion 15a. It is configured such that the main portion 15 is located therein. The tip of the lever 29, which extends diagonally upward, protrudes forward from a slit 30 formed on the left side of the decorative frame 7, and connects the connecting member 1.
The main part 15 serving as the holding part of the main part 4 is in contact with or is close to the main part 15 with a slight gap therebetween. Therefore, the connecting member 1
4 attempts to rotate in the direction of releasing the locking of the arm portion 15a by the boss portion 11b, that is, in the direction of arrow F in FIG. 2, the rotation is prevented by contact with the lever 29. It is something that exists. 3
Reference numeral 1 denotes a single drawstring, and this string 31 has one end connected to the pulley 24 and then inserted into the outer circumferential groove 24 of the pulley 24.
a, the other end of which is wrapped around guide rollers 32 and 33 pivotally mounted on the outer frame 2, and then guided downward from the decorative frame 7. 34 is the support frame 22
and the pulley 24. When the tension spring is located below the neutral position, the pulley 24 is rotated in the direction of arrow E, and when it is above the neutral position, the pulley 24 is It has a toggle effect of rotating and biasing in the opposite direction of arrow E. This tension spring 3
4 indicates that when the pulley 24 is biased to rotate in the opposite direction of arrow E, the moment exerted on the pulley 24 is applied to the decorative plate 1.
The spring force is set to be equal to or slightly larger than the moment in the closing direction of No. 1. Reference numeral 35 denotes a stopper formed on the support frame 22, which is used to abut the connecting rod 26 and restrict the rotation limit position of the pulley 24 in the direction of arrow E. Reference numeral 36 denotes a normally closed switch attached to the outer frame 2 via a mounting plate 37. This switch 36 opens and closes the energizing path of the motor 4 as shown in FIG.
The protrusion 24b provided on the outer periphery of the actuator 36
It opens and closes by touching and separating from a. 38 is a locking element pivotally mounted on the support frame 22, which is connected to the pulley 2.
When the pulley 4 rotates by a predetermined angle in the opposite direction of the arrow E, the pulley 24 is engaged with an engaging protrusion 24c protruding from one end surface of the pulley 24, thereby locking the pulley 24.

Next, the operation of the above configuration will be explained. First, as shown in FIGS. 1 and 3, it is assumed that the ventilation fan is in a stopped state and the decorative board 11 covers the front surface. When the drawstring 31 is pulled down from this state, the pulley 24 rotates in the opposite direction of arrow E against the spring force of the tension spring 34, and the lever 29 moves forward from the decorative frame 7. The main part 15 of the connecting member 14 moves diagonally upward in a substantially straight line, and the main part 15 of the connecting member 14 moves at the tip thereof.
The decorative board 11 is rotated in the opening direction so as to push up. When the tension spring 34 passes through the neutral position when the decorative laminate 11 is opened at a certain angle, it applies a rotational moment to the pulley 24 in the direction that assists the opening of the decorative laminate 11, that is, in the opposite direction of arrow E. Therefore, after that, by simply pulling the drawstring 31 lightly, the decorative plate 11 will rotate to the fully open position shown in FIG. Hold plate 11 in its open position. On the other hand, as the pulley 24 rotates, the protrusion 24b separates from the actuator 36a, so the switch 36 closes and energizes the motor 4, which rotates the blade 3 and opens the shutter 6 under the wind pressure. Ventilation operation is carried out. In addition, in this operating state, when the drawstring 31 is pulled down slightly, the pulley 24
rotates slightly in the opposite direction of arrow E, thereby unlocking the engaging protrusion 24c. Then, decorative board 1
1 rotates in the closing direction while pushing back the lever 29 against the spring force of the tension spring 34 by its own weight, and as a result, the lever 29 moves toward the pulley 24.
While rotating in the direction of arrow E, it moves obliquely downward and substantially linearly so as to retreat to its original position. Then, when the tension spring 34 passes through the neutral position, a rotation moment is applied to the pulley 24 in the direction of arrow E, and the opening/closing mechanism 20 returns to its original state in which the connecting rod 26 contacts the stopper 35, and the makeup Board 1
1 returns to its original closed position and covers the front surface of the main body 1.
On the other hand, at the end of the rotation of the pulley 24, the protrusion 24b comes into contact with the actuator 36a, so the switch 36 opens and cuts off the power to the motor 4.
Ventilation operation is then stopped.

In the above configuration, in order to remove the decorative board 11 for cleaning, first remove the decorative frame 7 from the main body 1,
Unscrew the screws 19 and remove the cover 18. Then, pinch the main part 15 of the connecting member 14 and attach it to the second
The arm portion 15a is rotated in the direction of arrow F in the figure to remove the arm portion 15a from the boss portion 11b as shown by the two-dot chain line, and then the main portion 15 is moved to the left. Then, the shaft portion 16
and 17 are the bearing holes 10 of the support part 9 and the connection part 12.
and 13 to release the connection between the decorative frame 7 and the decorative board 11. Therefore, the decorative board 11 can be removed from the decorative frame 7 by an extremely simple operation of rotating and sliding one connecting member 14 to the left, and the decorative frame 7 and the decorative board 11 can be handled as a single unit. This makes cleaning easier. After cleaning, the decorative board 11 can be attached to the decorative frame 7 by following the above-mentioned procedure in reverse.

By the way, the length dimensions of the shaft portions 16 and 17 of the connecting member 14 are as shown in FIG.
is set longer. For this reason, the shaft portion 16,
17 into the bearing holes 10, 13, first insert the long side shaft part 16, then insert the short side shaft part 17.
This can be done separately, such as inserting , and the insertion work is easier than when inserting at the same time. It goes without saying that the same effect can be obtained even if the shaft portion 17 is made longer than the shaft portion 16.

By the way, in this embodiment, a protrusion 11a is provided in the upper center of the decorative board 11, and this protrusion 11a
While bringing the main portion 15 of the connecting member 14 into contact with the
A lever 29 is brought into contact with this main portion 15. Therefore, even if the lever 29 is provided in a position biased to the left, the lever 29 will press the upper center of the decorative laminate 11 via the main portion 15 and the protrusion 11a, and the decorative laminate 11 will be under its own weight when released. The inconvenience caused by bending as if being twisted does not occur.

FIG. 8 shows a second embodiment, and the difference from the first embodiment is that both connecting parts 12 are located on the left side of each support part 9, and the connecting member 14 is located on the left side of each supporting part 9.
Both shaft parts 16 and 17 of the support part 9 are made to have the same length, and in this way, the decorative board 11 can be removed by simply pulling out the shaft parts 16 and 17 from the bearing hole 10 of the support part 9. The connecting member 14 can remain attached to the decorative board 11, making the operation easier. This can be done by positioning both connecting parts 12 on the right side of each support part 9 and leaving the connecting member 14 attached to the decorative frame 7 side, as in the third embodiment shown in FIG. The same applies.

FIG. 10 shows a fourth embodiment, which differs from the first embodiment in that the protrusion 11a of the decorative board 11 is omitted, and instead, a substantially inverted U-shaped protrusion 39 is provided at the center of the main portion 15. The protruding portion 39 is brought into contact with the decorative board 11 by bending it.

11 and 12 show the fifth and sixth embodiments, respectively. In FIG. 11, the main part 15 of the connecting member 14 is formed by two grooved protrusions 40 protruding from the decorative board 11.
In FIG. 12, a substantially U-shaped upright portion 41 is bent and formed on the left side of the main portion 15, and the lever 29 is brought into contact with this upright portion 41. 15 is made to abut substantially the entire decorative board 11, and even in this case, twisting deformation of the decorative board 11 can be prevented due to the rigidity of the connecting member 14 made of metal wire.

FIG. 13 shows a seventh embodiment, in which the connecting member 42 is formed in a straight line so that the shaft portions 43 and 44 inserted into each pair of left and right supporting portions 9 and connecting portions 12 are connected in a straight line. Both shaft portions 43 and 44 are formed.
The tips of the shaft portions 44 are configured to face in the same direction, that is, the tips of the shaft portions 44 face rightward in the figure, and on the left side of the connecting member 42, there is a folded portion serving as a holding portion via an arm portion 45 serving as a locking portion. 46 is bent and formed,
The lever 29 is brought into contact with this folded part 46, and the tip of the folded part 46 is brought into contact with the protrusion 1 of the decorative board 11.
1a, and the shaft parts 43 and 44 are brought into contact with the support part 9 and the connecting part 12.
In order to be able to insert and remove the decorative board 11
A notch 47 is formed on the left side surface of.

[Effect of idea]

As is clear from the above description, the present invention is such that the decorative board is attached to a decorative frame that is detachably attached to the main body, and for the attachment, a plurality of support parts are provided on the decorative frame and the decorative board, respectively. and a connecting portion, and the connecting member has a plurality of shaft portions coaxially positioned so that their tips face the same direction, and the shaft portion of the connecting member is inserted into the bearing hole of the supporting portion and the connecting portion. By inserting the decorative board removably in the orientation direction of the tip and connecting the decorative board to the decorative frame so that it can be rotated to open and close and detached, the decorative board can be easily inserted not only from the main body but also from the decorative frame. Therefore, the decorative board and decorative frame can be handled separately and cleaned thoroughly.
In addition, the connecting member is integrally formed with a locking portion and a presser portion apart from the shaft portion in the radial direction, and by locking the locking portion with the stopper portion of the decorative laminate, the shaft portion becomes the supporting portion and the connecting portion. In addition to preventing the locking part from slipping out of the bearing hole of the stopper, the lever of the opening/closing mechanism that opens and closes the decorative plate comes into contact with the holding part to prevent the locking part from coming off the stopper. There is no risk that the shaft portion of the member will accidentally come off from the bearing hole of the support portion and the connecting portion, and therefore, even though the connection structure is very simple, there is no risk of the decorative board accidentally coming off from the decorative frame. This has excellent effects such as reliable prevention.

[Brief explanation of drawings]

Figures 1 to 7 show the first embodiment of the present invention, in which Figure 1 is a vertical sectional side view, Figure 2 is a perspective view of the decorative frame and decorative board with the cover removed, and Figure 3 is a perspective view of the decorative frame and decorative board with the cover removed. Figure 4 is a side view of the four-bar linkage mechanism; Figure 5 is an electrical circuit diagram; Figure 6 is Figure 3 with the decorative panel fully open. 7 is a diagram showing the relationship between the connecting member, the support portion, and the connecting portion, and FIGS. 8 and 9 are views corresponding to FIG. 7 and FIGS. 10 to 10 showing the second and third embodiments, respectively. FIG. 13 is a perspective view of the main parts showing the fourth to seventh embodiments, respectively. In the figure, 1 is the main body, 7 is the decorative frame, 9 is the support part, 1
0 is a bearing hole, 11 is a decorative plate, 11b is a boss part (stopping part), 12 is a connecting part, 13 is a bearing hole, 14 is a connecting member, 15 is a main part (holding part), 15a is an arm (locking part) ), 16 and 17 are shaft parts, 20 is an opening/closing mechanism,
29 is a lever, 42 is a connecting member, 43 and 44 are shaft portions, 45 is an arm portion (locking portion), and 46 is a folded portion (holding portion).

Claims (1)

[Scope of utility model registration request] The front surface of a decorative frame 7 detachably attached to the main body 1 is opened and closed by a decorative plate 11 operated by a lever 29 of an opening/closing mechanism 20. , a plurality of connecting portions 12 provided on the decorative board 11 corresponding to each of the supporting portions 9 and having a bearing hole 13, and a plurality of sets of the supporting portions 9 and the connecting portions. A plurality of shaft portions 16 and 17 corresponding to the portion 12 are positioned coaxially and integrally formed so that their tips face the same direction, and a locking portion 15a and a locking portion 15a are formed apart from these shaft portions 16 and 17 in the radial direction. The connecting member 14 is provided with a connecting member 14 integrally formed with a presser portion 15, and a stop portion 11b formed on the decorative plate 11 in correspondence with the locking portion 15a of the connecting member 14.
4 to the bearing holes 10, 13 of the support part 9 and the connecting part 12.
The decorative plate 11 is connected to the decorative frame 7 in an openable/closable and detachable manner by being removably inserted in the orientation direction of the tip, and the connecting member 14 is rotated around the shaft portions 16 and 17. Accordingly, the locking portion 15a is locked to the locking portion 11b to prevent the shaft portions 16, 17 from coming off from the bearing holes 10, 13 of the support portion 9 and the connecting portion 12, and the lever of the opening/closing mechanism 20 is 29 and the holding part 15 prevents the locking part 15a from coming off from the stopper part 11b.