JPH031736Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a ventilation fan equipped with a shutter device that opens and closes an exhaust opening.

[Conventional technology]

Ventilation fans equipped with a shutter device that opens and closes the exhaust opening are very common and widely known;
Regarding the shutter device, many improvements have been made to simplify the mechanism and make assembly and disassembly easier. For example, as disclosed in Japanese Utility Model Publication No. 59-6180, there is a system in which each shutter blade is individually or indirectly attached to a support such as a body frame so as to be openable and closable.

In a conventional ventilation fan such as that disclosed in the above-mentioned publication, each of the shutter blades of the shutter device can be removed one by one by loosening screws from the outside. It is easy to clean the shutter blade, clean and maintain the inside of the main body frame, and it is also easy to assemble.

[Problem that the invention attempts to solve]

However, even with the advantages mentioned above, conventional ventilation fans include problems that may offset the advantages. In other words, in order to be able to handle each shutter blade individually, the shutter blades are connected by a connecting member through individual mounting pieces, and each mounting piece can be removed by removing the shutter blade. The mounting pieces are caulked to the connecting member and the main body frame to prevent them from coming apart. Therefore, cleaning the main body frame at the portion where the connecting member and the mounting piece are assembled is troublesome and difficult.

This invention was made in view of such problems, and its purpose is to improve the assembly state of the parts that allow each shutter blade to operate in conjunction even if the shutter blades in a connected configuration are individually removed. To obtain a ventilation fan which is easy to clean and maintain, and which does not solve the problem and allows almost all the parts of the shutter device to be separated from the main body frame if necessary.

[Means for solving problems]

The ventilation fan according to this invention includes a connecting member that connects each shutter blade to the main body frame so that each shutter blade can be opened and closed indirectly, and each blade mounting piece that associates the connecting member and the shutter blade. and a presser member is removably fitted and fixed to the support pin to prevent each blade attachment piece from being pulled out from the support pin that rotatably supports the blade attachment piece.

[Effect]

In this invention, almost all of the parts of the shutter device are assembled in a removable manner and can be removed from the main body frame as necessary, and the presser member is removably fitted and fixed to the support pin. As a result, even if the shutter blades are individually removed, the assembly relationship between the connecting member and the blade attachment piece is maintained, so that the component parts do not come apart carelessly.

[Example of idea]

The ventilation fan shown in the drawing as an application example of the present invention has an electric motor installed inside a rectangular cylindrical body frame 1 constituting a wind tunnel, and a shutter device for opening and closing is provided in the exhaust opening 2 at the rear end. It is. The configuration except for the shutter device is basically the same as that of a commonly known ventilation fan, so a description thereof will be omitted. That is,
The shutter device that characterizes the ventilation fan of this example has several shutters (usually three to three) that open and close the exhaust opening 2 of the main body frame 1.
(4) shutter blades 3, several sets of left and right support pins 4 that support the shutter blades 3 so as to be able to open and close individually, and each shutter blade 3 are connected in an interlocking relationship. a connecting member 5,
It mainly consists of a connecting member 5 and a plurality of blade attachment pieces 6 that connect each shutter blade 3.
Each shutter blade 3 has a side plate part 7 that protrudes rearward in the form of a flange on either the left or right side, and a horizontal hole is provided through the side plate part 7, and an upper end on the opposite side of the hole is provided with a side plate part 7. has a mounting hole through it.
The support pins 4 are arranged vertically with respect to a vertically elongated fixing plate 8 screwed to face the left and right inner surfaces of the exhaust opening 2 side of the main body frame 1, and the number of support pins 4 corresponds to the number at which the shutter blades 3 are installed. only planted,
By screwing the fixing plate 8 onto the main body frame 1 from the outside, the fixing plate 8 protrudes inwardly from the left and right inner surfaces of the main body frame 1 in opposing directions. The fixing plate 8 is provided with boss portions 9 on its upper and lower sides as structural elements for tightening screws. Connecting member 5
is a member provided in the vertical direction that connects and interlocks the shutter blades 3 at the front of one side, and the shutter blades 3 are attached at the mounting position of each shutter blade 3 by a removable pivot pin 11. The mounting piece 6 is mounted so as to be rotatable in the vertical direction. Each blade attachment piece 6 has a bent attachment portion 12 for abutting and attaching the shutter blade 3 to the rear thereof, and a support pin 4 is provided between the attachment portion 12 and the pivot portion formed by the pivot pin 11. A mounting hole is formed that can be loosely fitted. Each blade mounting piece 6 has its respective mounting hole fitted into a support pin 4 implanted in a fixing plate 8 from the inside, and is prevented from being pulled out by a presser member 10 fitted and fixed to the support pin 4. It is rotatably assembled to each support pin 4 and rotated about the support pin 4 by vertical sliding of the connecting member 5 connected at the rear side. The presser member 10 is made of a highly elastic non-metallic material, and is formed into a cylindrical shape with an inner diameter smaller than the outer diameter of the support pins 4 and a length shorter than the height of the support pins 4. It is removably fitted and fixed from the inner surface of 1. Also, since the outer diameter of the holding member 10 is larger than the mounting hole of each blade attachment piece 6, simply pushing the holding member 10 onto the support pin 4 with your finger or the like will cause the support pin end face 4a and the holding member end face 10a to separate. are approximately on the same plane. In this state, the presser member 10 is not completely inserted to the base of the support pin 4, and therefore each blade attachment piece 6 is prevented from being pulled out from the support pin 4 while remaining rotatable.

For each shutter blade 3, the hole in the side plate 7 is fitted into the support pin 4 on the side of the fixed plate 8 that does not rotatably support the blade mounting piece 6, and the blade is mounted on the back side of the part with the mounting hole on the opposite side. Mounting part 12 of piece 6
They are each attached by bringing them into contact with each other and fastening them from the outside with screws 13. Therefore, each shutter blade 3 can be easily removed from the outside and cleaned individually by following the procedure opposite to that described above. Even if the shutter blade 3 is removed, the assembly relationship of each blade attachment piece 6 to the support pin 4 and the assembly relationship between the blade attachment piece 6 and the connecting member 5 are maintained as they are. This is because the holding member 10 restricts the blade attachment piece 6 from being pulled out from the support pin 4. Therefore, the shutter blade 3 can be easily attached and detached since the position of the blade attachment piece 6 is determined. By removing the fixing plate 8 and the holding member 10, all parts of the shutter device can be separated from the main body frame 1, and cleaning and maintenance of the inside of the main body frame 1 can be carried out extremely easily.

Note that the fixing plate 8 on the side where the connecting member 5 is not assembled can be omitted by providing the support pin 4 directly on the main body frame 1.

[Effect of idea]

As is clear from the above description of the embodiments, in the ventilation fan of the present invention, a plurality of shutter blades are individually attached, and a blade mounting piece that connects each shutter blade to a connecting member in an interlocking relationship is attached to the main body frame. Each shutter is rotatably fitted to the support pin of a fixed plate which is removably fixed to the inner surface and has a support pin implanted therein, and a presser member is removably fitted and fixed to the support pin. The blades can be removed and cleaned individually, and even if each shutter blade is removed, the assembly relationship of the connecting member and blade mounting piece is maintained by the holding member, so individual parts do not come apart. It never becomes. Not only can most of the parts be separated from the main body frame by removing the holding member from the support pin, but when assembling, it is easy to fit and fix by simply pushing it all the way to the tip of the support pin due to the above-mentioned dimensions. Therefore, there is an advantage that cleaning and maintenance of the inside of the main body frame are extremely easy to carry out.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of one side of the exhaust opening in a ventilation fan as an embodiment of the present invention from the inside, and FIG. 2 is a perspective view showing the configuration of the other side of the exhaust opening from the inside. be. In the figure, 1 is the main body frame, 2 is the exhaust opening, 3 is the shutter blade,
4 is a support pin, 5 is a connecting member, 6 is a blade attachment piece, 8 is a fixing plate, 9 is a boss portion, and 10 is a presser member. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) Several pairs of support pins protruding inward from the left and right inner surfaces inside the exhaust opening at the rear end of the main body frame and arranged vertically in pairs on the left and right sides; A plurality of blade mounting pieces are each rotatably fitted to one side of the support pin, and the front side of each blade mounting piece is removably pivoted so that each blade mounting piece can be moved vertically. One end side is removably attached to the connecting member and the attachment part formed on the rear side of the blade attachment piece, and the other side end is attached to each support pin on the side where the blade attachment piece is not installed. A shutter device that opens and closes and includes a plurality of loosely fitted shutter blades is provided, and the support pin on the side of the shutter device into which the blade attachment piece is fitted is a fixing pin that is removably attached to the inner surface of the main body frame. The blade is embedded in the plate, and a holding member is removably fitted onto the support pin to prevent the blade from being pulled out from the support pin while allowing rotation of the blade attachment piece. A ventilation fan featuring (2) The ventilation fan according to claim 1, wherein the holding member is made of a highly elastic material and has a substantially cylindrical shape. (3) The ventilation fan according to claim 1 or 2, characterized in that the length of the holding member is shorter than the height of the support pin.