JP4702919B2 - Filter unit mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filter unit mounting structure for ventilating a box.
[0002]
[Prior art]
Conventionally, as shown in FIG. 3, the filter unit 11 houses a filter 12 inside, a filter housing portion 14a in which a ventilation fan 13 is attached to the back surface, and a frame portion stretched around the front opening periphery of the filter housing portion 14a. 14b, and a panel 15 that closes the front opening of the filter storage portion 14a of the main body 14. The panel 15 has a plurality of slit holes 15a, and is fixed by screwing four corners. In order to attach the filter unit 11 to the opening 16b formed in the side plate 16a of the box body 16, the screw insertion holes 14c through which the attachment screws 18 are inserted are drilled at the four corners of the frame portion 14b of the main body 14, and the screw insertion. A screw insertion hole 16c is formed in the side plate 16a of the box body 16 facing the hole 14c, the main body 14 is fitted into the opening 16b of the box body 16 and pressed by hand, and the screw insertion of the frame section 14b from the outside of the box body 16 is performed. A mounting screw 18 is inserted through the hole 14c and the screw insertion hole 16c of the box 16 and screwed to the nut 19 inside the box 16 to be fixed.
[0003]
[Problems to be solved by the invention]
In the conventional filter unit mounting structure, the mounting work must be performed on the outside and inside of the box while holding the main body, which is very difficult for one person to perform. Further, since there are many holes for inserting the mounting screws, it takes time and labor, and when there is no dimensional accuracy, the screw insertion holes of the filter unit and the screw insertion holes of the box body are displaced, making the installation difficult.
[0004]
Therefore, in view of the above problems, an object of the present invention is to provide a filter unit mounting structure that can be mounted from the outside of a box and that improves workability by reducing hole machining.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, in the structure of the filter unit attached to the opening formed in the side plate for ventilating the inside of the box, a screw insertion hole is drilled at an appropriate position of the frame part of the filter unit, and the screw Insert a mounting screw into the insertion hole from the front of the frame, screw the fixing into the position corresponding to the inside of the box opening on the back of the frame, and tighten the mounting screw to rotate the fixing. When facing the outside, the rotation is prevented by abutting against a rotation-preventing part protruding from the back surface of the frame part, and the box side plate is clamped and fixed between the frame part and the fixture by tightening the mounting screw. It is characterized by.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Screw insertion holes are drilled in the four corners of the frame portion of the filter unit, and mounting screws are inserted into the screw insertion holes from the front surface of the frame portion, and a fixture is screwed onto the back surface of the frame portion. In the vicinity of the fixture on the back of the frame, a locking part is projected, tightened with a mounting screw, and when the fixing tool rotates and faces outward, it comes into contact with the locking part and prevents rotation. To do.
When the mounting screw is further tightened, the fixture moves so as to approach the frame portion, and the filter unit is fixed by holding the side plate of the box between the frame portion and the curved portion of the fixture.
[0007]
【Example】
An embodiment of a filter unit mounting structure according to the present invention will be described with reference to the accompanying drawings of FIGS.
[0008]
The filter unit 1 houses therein a filter 2 indicated by slant lines in the drawing, a filter housing portion 4a to which a ventilation fan 3 is attached on the back surface, and a frame portion 4b that is stretched around the front opening periphery of the filter housing portion 4a. The main body 4 has a panel 5 that closes the front opening of the filter housing portion 4 a of the main body 4. The panel 5 has a plurality of slit holes 5a and is fixed by screwing four corners.
[0009]
The box 6 to which the filter unit 1 is attached has a rectangular opening 6b smaller than the frame 4b of the filter unit 1 formed on the side plate 6a.
[0010]
Fixers 7 are provided on the back surfaces of the four corners of the frame portion 4b of the filter unit 1 at positions corresponding to the inside of the opening 6b of the box 6 when attached. The fixture 7 has a curved portion 7a formed on the distal end side, tap holes 7b formed on the proximal end side, and taps by attaching mounting screws 8 from the front side to screw insertion holes 4c drilled in the four corners of the frame portion 4b. It is screwed into the hole 7b and attached.
[0011]
In order to attach the filter unit 1 to the opening 6b, first, the filter housing 4a is fitted into the opening 6b from the outside of the box 6 with the curved portion 7a of the fixture 7 facing inward, and the frame 4b is attached to the opening 6b. It is brought into contact with the side plate 6 a of the box 6. Then, the mounting screw 8 is tightened. When the mounting screw 8 is tightened, the fixture 7 also rotates in the same direction. An anti-rotation portion 4d protrudes in the vicinity of the fixture 7 on the back surface of the frame portion 4b. When the curved portion 7a on the distal end side of the fixture 7 is directed outward, the anti-rotation portion 4d contacts and is fixed. The tool 7 is prevented from rotating. Therefore, when the mounting screw 8 is further tightened, the fixture 7 moves so as to approach the frame portion 4b, and the side plate 6a of the box 6 is sandwiched between the frame portion 4b and the curved portion 7a of the fixture 7 to filter the filter. Unit 1 is fixed.
[0012]
In the present embodiment, the fixtures 7 are provided at the four corners of the frame portion 4b of the filter unit 1. However, the present invention is not limited to this, and the fixtures 7 may be provided at appropriate locations according to the size of the filter unit.
[0013]
Moreover, although the ventilation fan was attached to the back surface of the filter unit in this embodiment, the filter unit alone can be used without attaching the ventilation fan. The attachment position of the filter unit is not limited to the side plate of the box, but may be attached to the top plate of the box.
[0014]
【The invention's effect】
As described above, in the attachment structure of the filter unit that is attached to the opening formed in the side plate for ventilating the inside of the box body, screw insertion holes are drilled at appropriate positions on the frame portion of the filter unit, and the screw insertion holes are formed. Insert a mounting screw from the front of the frame, screw the fixing tool into a position corresponding to the inside of the box opening on the back surface of the frame, and tighten the mounting screw to rotate the fixing tool to the outside. The box side plate is clamped and fixed between the frame part and the fixing tool by tightening the mounting screws by contacting the detent part projecting on the back surface of the frame part. Since it can be attached from the outside of the body, even one person can easily attach it, and there is an excellent effect that the workability is greatly improved since the hole processing of the box body is unnecessary as compared with the conventional case.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a filter unit of the present invention.
FIG. 2 is an explanatory view showing a method of attaching the filter unit of the present invention.
FIG. 3 is a perspective view showing a state in which a conventional filter unit is attached.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Filter unit 4 Main body 4a Filter storage part 4b Frame part 4c Screw insertion hole 4d Anti-rotation part 6 Box 6a Side plate 6b Opening part 7 Fixing tool 7a Curved part 7b Tap hole 8 Mounting screw

Claims (1)

In the structure of the filter unit attached to the opening formed in the side plate for ventilating the inside of the box, a screw insertion hole is drilled at an appropriate position of the frame part of the filter unit, and the frame part is formed in the screw insertion hole. A fixing screw is inserted from the front side of the frame, the fixing tool is screwed into a position corresponding to the inner side of the opening of the box on the back surface of the frame portion, and the fixing tool is rotated to the outside by tightening the mounting screw. The side plate of the box body with the frame portion and the fixture by tightening the mounting screw. A filter unit mounting structure characterized by being clamped and fixed.

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