JPH024355Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] 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 quite 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.

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

[Problem that the invention attempts to solve]

However, even with the advantages mentioned above, conventional ventilation fans have 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 this problem, and its purpose is to maintain the assembled state of the parts that interlock each shutter blade even if the shutter blades in a connected configuration are individually removed. To provide a ventilation fan which is easy to clean and maintain, and which does not solve the problem and allows almost all parts of a shutter device to be separated from a 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. The connection member is configured to be separable from the other, and the connecting member is slid toward the main body frame side on a fixed plate with support pins planted therein so that each blade attachment piece does not escape from the support pin that rotatably supports the blade attachment piece. A presser member is provided that presses while allowing movement.

[Effect]

In this invention, almost all of the parts of the shutter device are removably assembled and can be removed from the main body frame as needed, and the shutter blades can be individually removed by pressing the connection member of the holding member. However, the assembly relationship between the connecting member and the blade attachment piece is maintained, so that the components 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 assembled 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. . . 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. In other words, the shutter device that characterizes the ventilation fan of this example is:
Several (usually 3 to 4) shutter blades 3 that open and close the exhaust opening 2 of the main body frame 1, and a pair of left and right shutter blades that support the shutter blades 3 so that they can be opened and closed individually. A connecting member 5 that connects the set of support pins 4 and each shutter blade 3 to form an interlocking relationship.
It is mainly composed 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 portion 7 that projects rearward in the form of a flange on either the left or right side,
A horizontal hole is formed through the side plate portion 7, and a mounting hole is formed through the upper portion of the end opposite to this hole. 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 is set at a distance corresponding to the mounting interval of the shutter blade 3. When the fixing plate 8 is screwed onto the main body frame 1 from the outside, the left and right inner surfaces of the main body frame 1 protrude inwardly in opposite directions. The fixing plate 8 is provided with boss portions 9 as structural elements for screw tightening on its upper and lower sides, and the free end of the upper boss portion 9 of one of the fixing plates 8 is connected to the inner surface of the main body frame 1. A holding member 10 bent in a hook shape so as to face the holding member 10 integrally extends forward (in the suction side direction). The connecting member 5 is a member provided in the vertical direction to connect the shutter blades 3 at the front of one side so as to interlock with each other. The blade attachment piece 6 is attached by means of a possible pivot pin 11. Each blade attachment piece 6 has a bent attachment part 12 for abutting and attaching the shutter blade 3 to the rear thereof.
A mounting hole into which the support pin 4 can be loosely fitted is formed between the mounting portion 12 and the pivot portion formed by the pivot pin 11. Then, each blade mounting piece 6 has its respective mounting hole fitted into a support pin 4 implanted in a fixing plate 8 having a pressing member 10 from inside, and each support pin 4 is fitted from inside.
The support pin 4 rotates around the support pin 4 by vertical sliding of the connecting member 5 connected at the rear side. The connecting member 5 is located on the front side of the fixed plate 8, and the free end of the presser member 10 extending from the boss portion 9 of the fixed plate 8 is in contact with the inner surface of the connecting member 5. The holding member 10 of the fixed plate 8 does not restrain the vertical sliding of the connecting member 5, but it presses the connecting member 5 outward and prevents each blade attachment piece 6 from being pulled out from the support pin 4. It's suppressed.

Thus, each shutter blade 3 presses the hole in the side plate portion 7 with the support pin 4 on the side of the fixed plate 8 without the member 10.
The blades are fitted by fitting the blades into the blades, bringing the back side of the part with the mounting hole on the opposite side into contact with the mounting portion 12 of the blade mounting piece 6, and fastening them from the outside with screws 13, respectively. 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. It is the presser member 10
This is because the connecting member 5 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. Then, if the fixing plate 8 is removed, the main body frame 1
All parts of the shutter device can be separated,
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 which the connecting member 5 is not assembled can be omitted by providing the support pin 4 directly on the main body frame 1, and the presser member 10 can be provided separately from the boss portion 9 of the fixing plate 8. It is also possible to configure the fixing plate 8 separately.

[Effects of the Invention] As is clear from the above description of the embodiments, the ventilation fan of the present invention has a plurality of shutter blades attached individually and a blade mounting piece that connects each shutter blade to a connecting member in an interlocking relationship. , each of which is removably fixed to the inner surface of the main body frame and rotatably fitted to the support pin of a fixed plate with a support pin implanted therein, and the connecting member is pressed outward with a presser member provided on the fixed plate. Since the shutter device is equipped with a shutter device, each shutter blade can be removed and cleaned individually. Since it is maintained by the holding member, the individual parts will not come apart.
Moreover, most of the parts can be separated from the main body frame by releasing the pressure of the holding member, so there is an advantage that cleaning and maintenance of the inside of the main body frame can be carried out extremely easily.

[Brief explanation of drawings]

Fig. 1 is a vertical side view of a ventilation fan showing an embodiment of the present invention, Fig. 2 is a perspective view showing the configuration of one side of the exhaust opening from the inside, and Fig. 3 is a side view of the exhaust opening. It is a perspective view showing the structure of the other side part from inside. In the figure, 1 is the main body frame, 2 is the exhaust opening, and 3
is a shutter blade, 4 is a support pin, 5 is a connecting member, 6 is a blade mounting piece, 8 is a fixing plate, 9 is a boss part (structural element for fixing), 10 is a presser member,
12 is a mounting portion. 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) A main body frame 1 whose front end is open as a suction side and whose rear end is open as an exhaust opening 2, and this main body frame 1
Several pairs of support pins 4 are arranged vertically on the left and right sides, projecting inward on the left and right inner surfaces of the exhaust opening 2, and each of the support pins 4 on one side A plurality of blade attachment pieces 6 rotatably fitted in the intermediate portion, and a connecting member 5 that removably pivots the front side of each blade attachment piece 6 and connects each blade attachment piece 6 in the vertical direction. and,
One end is removably attached to a mounting portion 12 formed at the rear of the blade mounting piece 6, and the other end is loosely attached to each support pin 4 on the side where the blade mounting piece 6 is not mounted. The shutter device includes a shutter device that opens and closes and includes a plurality of shutter blades 3 fitted therein, and a support pin 4 on the side in which the blade attachment piece 6 of the shutter device is fitted is removably mounted on the inner surface of the main body frame 1. The main body frame 1 is attached to the fixing plate 8 from the inside while allowing the connecting member 5 to slide up and down.
A ventilation fan characterized by being provided with a pressing member 10 that presses against the inner surface of the ventilation fan. (2) Utility model registration claim 1, characterized in that the holding member 10 is formed integrally with a structural element 9 for fixing the fixing plate 8 to the main body frame 1
Ventilation fan as described in section.