JPH024356Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a ventilation fan whose front side is opened and closed by a decorative body.

(Prior Art) As this type of ventilation fan, the present applicant has developed
An application was filed for the ventilation fan shown in Publication No. 86336. The decorative body is attached to a decorative frame that is removably attached to the front of the main body using elastic engagement means, and a rotating body that rotates in conjunction with the shutter opening/closing mechanism is provided on the main body side. The rotational displacement of the rotating body is transmitted to the decorative body by the rotating body directly contacting the decorative body, and the decorative body is opened.

(Problem to be solved by the invention) However, in the above-mentioned structure, since the rotating body pushes the decorative body forward to open it, the pressing force causes elastic engagement with the main body of the decorative frame. As a result, there is a risk that the decorative frame may fall off from the main body.

Therefore, the purpose of the present invention is to provide a decorative frame that is removably attached to the front of the main body by means of an elastic engagement means.
To provide a ventilation fan in which the upper end of a decorative body is attached so that it can be rotated to open and close, and there is no risk of the decorative frame falling off from the main body even if a forward pressing force is applied to the decorative frame when the decorative body is opened. There is something to do.

[Structure of the idea]

(Means for Solving the Problems) The ventilation fan of the present invention includes a rigid mounting member fixed to a decorative frame to which a decorative body is attached, a link mechanism attached to at least this mounting member, and a main body side. An operating mechanism that operates a link mechanism to open the decorative body during operation, an elastic engagement means for attaching the decorative frame to the main body, and a stop portion provided on the main body independently, and integrally attached to the mounting member. and a locking part that engages with the provided restraint part by hooking to prevent the decorative frame from moving forward.

(Function) When the operating mechanism is operated, the link mechanism operates and the ornament is released. At this time, the decorative body is opened by being pushed forward by the operation mechanism on the main body side via the link mechanism, but the decorative frame is moved forward by the engagement between the locking part of the mounting member and the restraining part of the main body. Since the decorative frame is restrained from moving, the decorative frame will not be inadvertently disengaged from its elastic engagement with the main body.

(Example) An example 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, 2 is an outer frame made of a metal plate, and the tip of a flange 2a extending from the four sides of the front surface of this outer frame 2 is An engaging portion 2c serving as an elastic engaging means having a protrusion 2b curved outwardly is bent forward. . and,
A stop plate 3 made of a metal plate serving as a stop part is fixed to the upper and left flanges of the four flanges 2a independently of the engaging part 2c so as to straddle both, and the upper end of this stop plate 3 A restraining piece 3 protruding upward from the
a is bent. A well-known blower 6 consisting of blades 4 and a motor 5 is disposed within the outer frame 2, and three shutters 7, for example, are disposed on the rear surface of the outer frame 2 so as to be openable and closable. There is. 8
1 is a plastic decorative frame having a bell mouth 8a in the center, and a large number of protrusions 8b protruding from the inner rear end of the peripheral wall thereof as elastic engagement means. The decorative frame 8 is detachably attached to the front surface of the outer frame 2 by elastic engagement of the protrusions 8b with the protrusions 2b. Reference numeral 9 denotes a board made of a metal plate as a rigid mounting member fixed to the upper left side inside the decorative frame 8, and a support piece 10 protruding outward from the front surface of the decorative frame 8 is bent at the side edge of this board. A locking piece 11 serving as a locking portion is formed at the upper end and integrally extends rearward along the upper surface of the decorative frame 8, and a hole 11a is formed at the rear end of this locking piece 11. has been done. 12 is a through hole formed in the upper surface of the decorative frame 8 corresponding to the hole 11a of the locking piece 11, and as shown in FIG. It is formed to shift. Then, the stopper piece 3a of the stopper plate 3 is inserted into the hole 1 of the stopper piece 11.
1a and the through hole 12 and protrudes upward, that is, the hole 11a of the locking piece 11 is hooked on the through hole 12 of the stopper piece 3, and in this state, the rear end of the hole 11a comes into contact with the stopper piece 3a. This makes the decorative frame 8
forward movement is restricted. Reference numeral 13 denotes a support piece attached to the front upper right side of the decorative frame 8 in correspondence with the support piece 10. Reference numeral 14 denotes a locking arm made of a metal plate fixed to the upper left side of the inside front surface of the decorative frame 8. This locking arm extends rearward and approximately horizontally, and a semicircular protrusion 14a at its tip touches the upper surface of the outer frame 2. The decorative frame 8 is in contact with the portion 2d, thereby preventing upward movement of the decorative frame 8. Reference numeral 15 designates a plastic ornament whose upper end support portions 15a on both sides are pivotally connected to both support pieces 10 and 13 of the decorative frame 8 via a crankshaft 16 so as to be rotatable in the vertical direction. 17 is a shaft 19 attached to a pivot piece 18 bent at the side edge of the substrate 9.
This is a link connected via . Reference numeral 20 denotes a lever, whose front end protrudes forward from a slit 21 formed on the upper left side of the front surface of the decorative frame 8 and is pivotally connected to the crank portion 16a of the crankshaft 16.
The intermediate portion located inside is pivotally connected to the link 17 by a shaft 22. The crankshaft 16 and the link 17 are pivotally connected to the base plate 9 as described above, and the lever 20 is pivotally connected to the crankshaft 16 and the link 17.
constitutes a link mechanism 23 that opens and closes the decorative body 15, and therefore, the link mechanism 23 is attached to at least the base plate 9, which is an attachment member. Reference numeral 24 denotes a toggle spring consisting of a tension spring stretched between a hanging piece 25 formed on the board 9 and the upper end of the link 17, and when located to the left of the neutral position, the link 17 is rotated in the direction of arrow A, and when the link 17 is on the right side, the link 17 is rotated in the direction opposite to arrow A. When the link 17 is urged to rotate in the direction opposite to the arrow A, the torge spring 24
The spring force is set such that the moment exerted on the decoration body 7 is slightly smaller than the moment in the closing direction due to the decoration body 15's own weight. Note that 26 is a cover attached to the decorative plate 9 to cover the crankshaft 16 portion. Reference numeral 27 denotes an operating mechanism, which has a shaft 2 attached to a mounting piece 28 bent at the side edge of the stop plate 3.
9, the rotating body 30 is pivotally mounted, and an operating rod 32 is vertically movably inserted into a switch case 31 attached to the front lower part of the outer frame 2, and a drawstring 33 is attached to the lower end of the operating rod 32. At the same time as attaching the operating rod 32
A connecting rod 34 is connected between the upper end and one end of the rotating body 30.
It is connected by. A contact 35 is provided protruding from the other end of the rotating body 30, and the contact 35 is brought into contact with the rear end of the lever 20.
0 is constantly urged to rotate in the direction of arrow B by a tension spring 36. Further, a switch for turning off the power to the motor 5 and a lock mechanism (both not shown) are provided in the switch case 31, and when the operating rod 32 is pulled down, the switch is turned on and the lock mechanism is activated. The operating lever 32 is then locked in the lowered position, and when the operating lever 32 is pulled down again, the lock mechanism is unlocked.

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 body 15 covers the front surface. When the drawstring 33 is pulled down from this state, the operating rod 32 and the connecting rod 34 are pulled down, and the rotating body 30 rotates in the direction opposite to the arrow B against the spring force of the tension spring 36. Due to this rotation of the rotating body 30, the lever 20 is pushed by the contact 35 and moves forward from the decorative frame 8, and with this movement, the crankshaft 16 is rotated in the direction of arrow C. As a result, the decoration body 15 is rotated upward, which is the opening direction. Then, when the decorative body 15 is opened to a certain angle, in other words, when the link 17 is rotated by a certain angle in the direction opposite to the arrow A, the toggle spring 24 passes through the neutral position and the link 17 and, by extension, the lever 20
Since the decorative body 15 is urged in the advancing direction, a rotation moment is applied to the decoration body 15 in a direction that facilitates its opening. Therefore, after that, by simply pulling the drawstring 33 lightly, the decorative body 15 will rotate to the fully open position shown in FIG.
2 is locked in the lowered position to hold the rotating body 30 and thus the decorative body 15 in its fully open position, and the switch is turned on to energize the motor 5. As a result, the blades 4 are rotationally driven, and the shutter 7 opens under the wind pressure, thereby performing ventilation operation. In addition, in this operating state, when the drawstring 33 is pulled down slightly, the lock of the operating rod 32 is released, and the rotating body 30 is rotated in the direction of arrow B while pulling up the connecting rod 34 and the operating rod 32 by the spring force of the tension spring 36. move. .
Then, the decorative body 15 pushes the lever 20 due to its own weight.
is rotated in the closing direction while being pushed back to the original position against the spring force of the toggle spring 24. Then, when the decorative body 15 rotates in a certain angle closing direction, in other words, when the link 17 rotates a certain angle in the direction of arrow A, the toggle spring 24 passes through the neutral position, and the link 17 and hence the lever 20
Thereafter, the ornament 15 returns to its original closed position following the retreating lever 20 and covers the front surface of the main body 1. on the other hand,
The upward movement of the operating rod 32 turns off the switch in the switch case 31, cutting off the power to the motor 5, and thus stopping the ventilation operation.

Incidentally, the decoration 15 is opened by pressing the decoration 15 forward via the link mechanism 23 by the rotating body 30 of the operating mechanism 27 provided on the outer frame 2 of the main body 1. And the ornament 1
The pressing force applied to 5 ultimately acts on decorative frame 8. For this reason, if the stop plate 3 and the stop piece 11
If this is not provided, there is a risk that the elastic engagement of the protrusions 8b with the protrusions 2b of the outer frame 2 will be disengaged due to the pressing force, and the decorative frame 8 will fall off. However, according to this embodiment, the decorative frame 8 is restrained from moving forward by the engagement of the locking piece 11 on the restraining piece 3a, so that the engagement of the protrusion 8b with the protrusion 2b is prevented. There is no risk of it coming off. In this case, in this embodiment, the locking arm 14 is brought into contact with the upper surface 2d of the outer frame 2, taking into consideration that an upward force is also applied to the decorative frame 8, so that the peripheral wall of the decorative frame 8, especially the lower peripheral wall It is also possible to prevent the projections 8b from being deformed and the projections 8b coming out of elastic engagement with the projections 2b, thereby ensuring that the decorative frame 8 is prevented from falling off.

Further, the link mechanism 23 that is pressed by the rotating body 30 when the decorative body 15 is opened is mounted on a rigid substrate 9.
Since it is attached to the link mechanism 23, the decorative frame 8 can be prevented from deforming due to the pressing force acting on the link mechanism 23.

Furthermore, since the configuration is such that the displacement is transmitted from the rotating body 30 provided on the main body 1 side to the link mechanism 23 provided on the decorative frame 8 side to open the decorative body 15, the positional relationship between the rotating body 30 and the lever 20 is If the error occurs, the displacement transmission to the link mechanism 23 will be insufficient, and the decorative body 15 will not be able to be opened reliably.
Although the positional relationship between the two must be maintained accurately, in this embodiment, the link mechanism 23 is provided on the board 9, which is positioned by the hooking engagement of the locking piece 11 with the stop plate 3. Rotating body 30
Decorative body 1
5 can always be opened reliably. This means that when cleaning the decorative frame 8 and the decorative body 15, taking into consideration that the decorative frame 8 is attached to and removed from the main body 1, there will be a misalignment between the rotating body 30 and the lever 20 when reattaching the decorative frame 8 and the decorative body 15. This means that there is no possibility that this will occur, and the practical effect is extremely high.

By the way, for cleaning purposes, I removed the decorative frame 8 and the decorative body 1.
5 from the main body 1, as shown in FIG.
4 from the outer frame 2, and then push up the decorative frame 8 to remove the locking piece 11 from the restraining piece 3a. Furthermore, after cleaning, the decorative frame 8 and the decorative body 15 can be attached to the main body 1 by following the procedure reverse to the above, without impairing the ease of attachment and detachment of the decorative frame 8.

[Effect of idea]

As is clear from the above description, the present invention provides a decorative frame in which the upper end of the decorative body is rotatably attached to the decorative frame which is detachably attached to the front surface of the main body by means of elastic engagement means. A rigid mounting member is fixed to the frame, and at least this mounting member is provided with a link mechanism that is operated by an operating mechanism on the main body side, and the mounting member is provided with a stopper of the main body to prevent forward movement. Since the locking part that engages with a hook is integrally provided, even if the decorative frame side is subjected to forward pressing force from the operating mechanism on the main body side when the decorative body is opened, the decorative frame will not be separated from the main body. There is no risk of the ornament falling off easily, and since the pressing force is directly received by the mounting member, there is no risk of the ornament deforming. Furthermore, since the decorative frame is prevented from falling off by engaging with hooks, there is no risk of impairing the ease of attaching and detaching the decorative frame to the main body due to elastic engagement, and the link mechanism on the decorative frame side to the operating mechanism on the main body side The positioning is done by the engagement of the locking part of the mounting member with the stopper part on the main body side.
This provides excellent effects such as preventing misalignment between the two and ensuring that the decorative body is always opened.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a longitudinal side view, Fig. 2 is an exploded perspective view, Fig. 3 is an enlarged longitudinal sectional side view of the main part, and Fig. 4 is a decorative board when it is opened. FIG. 5 is a vertical side view showing a state in which the decorative frame is removed. In the figure, 1 is the main body, 2 is the outer frame, 2c is the engagement part (elastic engagement means), 3 is the stop plate (stop part), 8 is the decorative frame, 8b is the protrusion (elastic engagement means), and 9 is the Board (mounting member), 11 is a locking piece (locking part), 15 is a decoration, 17 is a link, 20 is a lever, 23 is a link mechanism, 27 is an operating mechanism, 30 is a rotating body, 32 is an operating rod, 33 is a drawstring, and 24 is a continuous rod.

Claims (1)

[Scope of utility model registration request] A decorative frame is attached to a decorative frame that is removably attached to the front surface of the main body by an elastic engagement means, and the upper end of the decorative body is rotatably attached to open and close, a rigid mounting member fixed to the decorative frame; At least a link mechanism attached to this attachment member, an operating mechanism provided on the main body side that operates the link mechanism to open the ornament upon operation, and an elastic engagement means attached to the main body independently of each other. A ventilation fan comprising: a stopper provided; and a locking part that is provided integrally with the mounting member and engages with the stopper by hooking to prevent forward movement of the decorative frame.