JPS6215517Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a protective guard for an axial blower, which is fixed to a motor mounting leg with a circular cross section that supports a motor that rotates an impeller. It is something.

[Prior Art] In a pressure ventilation fan (an axial flow blower) as shown in FIG. It is attached using a fixing device. Conventionally, this fixture consists of a so-called U-bolt 103 bent into a U-shape as shown in FIG. 102, and wing nuts 104 are fitted into the two threaded portions of the U-bolt 103, respectively, to removably fix the protective guard 101.

[Problems to be solved by the invention] In the conventional fixture for fixing the protective guard 101 described above, the wing nut 1 of the protective guard 101 is
04, the position of the fixture itself relative to the motor mounting leg 102 cannot be determined, and if the wing nuts 104 are not tightened evenly, the mounting position will shift, making it difficult to secure the protective guard 101 properly, and causing a bad appearance. There was a problem with getting used to it.

This invention was made in order to solve the problems of the conventional blower, and provides a blower protective guard fixing device that can be easily and securely fixed to the motor mounting leg, and that can easily and securely tighten and secure the protective guard in the fixed state. The purpose is to obtain.

[Means for solving the problem] The blower protective guard fixing device according to this invention has the following features:
It has a pair of plate-shaped flanges connected by a web portion and facing each other at a distance that allows them to be fitted across a motor mounting leg with a circular cross section that supports the motor,
The pair of flange portions has a screw mounting hole formed on the free end side for screwing a threaded rod for fastening the flange portions together, and a claw for contacting the motor mounting leg on the inside of each flange portion. A threaded rod is vertically installed on the outer surface of the web portion, into which a nut for tightening and fixing the protective guard of the axial blower is fitted.

[Function] In this invention, a pair of flanges are straddled over the motor mounting leg, and by tightening the flanges with a threaded rod, the claws and the flange are clamped to fix the motor mounting leg without shifting. In the fixed state, the protective guard can be fixed by fitting a nut to a threaded rod installed in the web portion.

[Example] Next, the configuration of the present invention will be specifically described based on an example shown in the drawings.

The axial blower as an application example of the present invention shown in FIG. 3 has a protective guard 1 provided on the suction side supporting the motor, and four motor mounting legs 2 each having a circular cross-sectional shape and made of pipe material, for example. It is removably attached by several protective guard fixtures 3 attached to the body. Protective guard 1
The configuration of the axial blower itself other than the protective guard fixture 3 for attaching the blower is the same as the usual one.
That is, the protective guard fixture 3 that characterizes the axial blower of this example includes a threaded rod 6 into which a wing nut 5 can be screwed into a leg fixture 4 formed in a substantially channel shape, as shown in FIG. It has a simple structure by planting. The leg fixing part 4 has a pair of left and right plate-shaped flanges 8 facing the web part 7 at an interval that allows the motor mounting legs 2 to be fitted therein, and a butterfly bolt 9 is attached to the free end side of these flanges 8. Screw mounting holes 10 through which the screws can be inserted and fastened are formed on the inside of the base, and claws 11 that contact the motor mounting legs 2 and define the mounting positions to the motor mounting legs 2 are formed in opposing shapes. The threaded rod 6 is installed perpendicularly to the outer surface of the web portion 7 of the leg fixing portion 4. That is, the leg fixing part 4 can receive the motor mounting leg 2 on its inner side. Claw 1
1 contacts the motor mounting leg 2 fitted into the leg fixing portion 4 to prevent relative displacement. In this way, by fastening the motor mounting leg 2 through the butterfly bolt 9 to the fitted flange portion 8, the protective guard fixture 3 is stably attached to the motor mounting leg 2 (see Fig. 5). . The protective guard 1 is attached to the threaded rod 6 of the protective guard fixture 3, which is attached to the motor mounting leg 2 with the threaded rod 6 facing outward, as described above, by attaching the wing nut 5 to the threaded rod 6 via the presser plate 12.
By screw-fitting, the web portion 7 is clamped between the upper surface of the web portion 7 and the holding plate 12. In addition, the reference numeral 13 in the figure is a patch plate provided on the protective guard 2, and in the installed state, the motor mounting leg 2
It is in pressure contact with the

[Effects of the invention] As is clear from the above description of the embodiments, the blower protective guard fixing device of the present invention opposes the blower at an interval that allows it to be inserted across the motor mounting leg with a circular cross section that supports the motor. It has a pair of plate-shaped flange parts connected by a web part, and the pair of flange parts has a screw mounting hole on the free end side for screwing a threaded rod for fastening the flange parts together. A claw that contacts the motor mounting leg is formed on the inside of each flange portion, and a threaded rod is vertically mounted on the outer surface of the web portion into which a nut for tightening and fixing the protective guard of the axial blower is fitted. By placing the pair of flanges across the motor mounting leg and tightening the flanges with a threaded rod, the motor mounting leg will not shift due to the pinching between the claw and the flange. It can be fixed easily and reliably, and in the fixed state, the protective guard can be fixed by fitting a nut to the threaded rod installed in the web portion. Therefore, the fixing operation of the protective guard becomes easy, and the mounting position that is unsightly in appearance is avoided.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are explanatory diagrams showing a conventional axial blower and a protective guard fixture, respectively;
Fig. 3 is a front view showing an axial blower as an application example of the present invention, Fig. 4 is an enlarged side view showing the main parts of the axial blower showing how the protective guard fixture is used, and Fig. 5 is a front view showing an axial blower as an application example of the present invention. FIG. 2 is an explanatory diagram showing a mounting form of the protective guard fixture. Note that the same reference numerals in the figures indicate the same or equivalent parts. 1...Protective guard, 2...Motor mounting leg, 3...
...Protective guard fixture, 4... Leg fixing part, 5... Wing nut, 6... Threaded rod, 7... Web part, 8...
Flange portion, 9...wing bolt, 10...screw mounting hole, 11...claw.

Claims (1)

[Scope of utility model registration request] It has a pair of plate-shaped flange parts connected by a web part and facing each other at a distance that allows the motor mounting leg with a circular cross section to be fitted across the motor mounting leg that supports the motor in the axial blower. A screw mounting hole is formed on the free end side for screwing a threaded rod for fastening the flange parts together, and a claw for contacting the motor mounting leg is formed on the inside of each flange part, and the web part has A protective guard fixing device for a blower, characterized in that a threaded rod to which a nut for tightening and fixing the protective guard of the axial blower is fitted is vertically planted on its outer surface.