JPS582127Y2 - Motor mounting device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a motor mounting device for mounting a motor between two parallel support rods.

Fig. 1 shows a conventional blower mounting device, with Fig. A being a rear view and Fig. B being a sectional view taken along the line B--B.

In the figure, 1 is the motor, 1a is the side surface of the motor case surrounding the rotating shaft 1b, and 2, 2 are two mounting legs with a U-shaped cross section, which are arranged symmetrically with respect to the axis S of the rotating shaft 1b. , is attached to the case side surface 1a at both side edges 2a, and mounting surface portions 3, 3 are formed at the ends projecting on both sides.

4, 4 is a support rod formed by the center leg of two U-shaped support legs 4a, 4a, and the support legs 4a, 4a are connected to the blower frame 5
The support rods 4, 4 are arranged parallel to each other with an interval C between them.

Reference numerals 6 and 6 designate two saddle-shaped fittings having crimp grooves 5a and 5a formed in the center of a flat plate so as to embrace the outer peripheries of the support rods 4 and 4, respectively. The motor 1 is mounted between the support rods 4 and 4 by being fastened to the mounting surface portion 3.3 with four bolts 7, with the motor 1 held between the support rods 4 and 4.

In such a structure, the motor 1 is placed between the support rods 4, 4.
The distance between the mounting surfaces 3 and 3 is made smaller than the support bar spacing C so that the mounting feet 2 and 2 can be inserted in one piece, and when tightening the bolts 7, the mounting feet 2 Alternatively, the support rod 4 may be slightly deformed and tightened until the surface of the mounting surface portion 3 contacts the surface of the support rod 4.

However, since the contact is a line contact, the direction of the rotation axis S of the motor 1 changes due to the fastening table of each bolt 7, which has the disadvantage that assembly is time-consuming.

Further, due to the wire contact, the support of the motor 1 is unstable, resulting in vibration noise during operation, and the bolts 7 tend to loosen.

This invention aims to eliminate the above-mentioned drawbacks.

Figure 2 shows an example of this invention (an example for a blower)
Figure A is a rear view, and Figure B is a sectional view taken along the line B--B of Figure A.

In the figures, the same reference numerals as in FIG. 1 indicate the same or corresponding parts.

As shown in the figure, most of the configuration is the same as that in Figure 1, but the mounting surfaces 3, 3 of both Utatsuku legs 2, 2 are also half-circumferred so as to embrace the outer peripheries of the support rods 4, 4. Support grooves 8 and 8 are respectively provided so as to fit with each other.

Also, if the crimp grooves 6a, 6a of the fixtures 6, 6 are shaped so that they fit with the remaining half circumference, by tightening the bolt door, the crimp groove 6a and the support groove 8 will allow the support rod 4 to ``Since the entire circumference is tightened and stably supported, vibration noise and loosening of the bolts 7 during operation are almost eliminated.

Further, if the shapes of the crimp groove 6a and the support groove 8 are made accurately, the direction of the rotational axis S of the motor 1 will hardly change depending on the tightening condition of the bolt 7.

However, in order to insert the motor 1 integrated with the mounting foot 2.2 having the support groove 8 as described above between the support rods 4, 4,
If the size of the conventional product allows it to be inserted horizontally, the support rod 4 will not fit into the support groove 8, and even if the bolt 7 is tightened, the mounting foot 2 or the support rod 4 will generally deform, as shown in Fig. 2. In this case, the surface of the support groove 8 and the surface of the support rod 4 do not make good surface contact.

However, as shown in FIG. 3A, if the motor 1 with the mounting feet 2, 2 is tilted and inserted between the support rods 4, 4, and then rotated in the direction of the arrow and inserted into the fixed position, the rotation axis S On the other hand, if the distance DI between the bottom edges of the support grooves 8 at symmetrical positions does not exceed the support bar spacing C and is close to that value, when the distance DI is close to that value, the support rods will be supported in the support grooves 8 when rotated to the mounting position shown in FIG. The rod 4 can be positioned.

However, the distance D2 between the two grooves 8 at that time is the distance D
(Since the gap is smaller than 1, the gap between the surface of the support rod 4 and the surface of the support groove 8 is large, and it is not preferable to bring them into surface contact by tightening them.)

The gist of this invention is that, in order to further reduce the above-mentioned gap, as shown in FIG. As shown in FIG. 3B, the notches 9, 9 of the two mounting legs 2, 2 are arranged symmetrically with respect to the rotation axis S.

In this way, the distance D between the bottom edges of the support grooves 8 on each notch side
If 3 does not exceed the support rod spacing C, insert both notches 9.9 into the support rods 4, 4, and then rotate the support rod 4 along the support groove 8 as shown in the figure. The above-mentioned distance generated at that time is the difference between the distance D3 and the distance between the groove bottoms, so if the shape of the mounting foot 2 is the same, the one with the notch 9 has better support than the one without. The gap between the groove 8 and the support rod 4 can be made smaller.

The longer the length E of the notch 9, the narrower the above-mentioned gap becomes. When the length E becomes half of the length F of the support groove 8 including the notch 9, the gap disappears, but it is useless to make it longer. It is meaningless to merely reduce the contact area between the support groove 8 and the support rod 4.

In reality, the length of the notch 6 depends on the weight of the motor 1, the mounting foot 2,
By setting an appropriate value of half or less of the length of the support groove 8 to design conditions such as the strength of the support rod 4, it is easy to insert the motor 1 having the mounting foot 2 between the support rods 4. At the same time, the above-mentioned gap can be made small to achieve support similar to the surface contact shown in FIG. 2, and the drawbacks of the conventional product can be eliminated.

As explained above, according to this invention, each mounting leg is also provided with a support groove into which the support rod fits, and the support groove is provided with a notch that allows the mounting leg to rotate around the center of rotation of the motor. The simple structure not only allows the motor with mounting feet to be easily inserted between the support rods, but also facilitates assembly because there is little change in the direction of the rotating shaft when the mounting fixture is fastened to the mounting surface. The gap between the support rods can be reduced when the support rods are positioned on the mounting legs, and by attaching the mounting brackets to the mounting feet, good surface contact can be obtained, so there is no vibration noise or loosening of fastenings during operation. This has the effect that a good motor mounting device can be obtained.

[Brief explanation of the drawing]

Figure 1 is a diagram showing a conventional device, Figure A is a rear view, Figure B is a sectional view taken along line B-B in Figure A, and Figure 2 is a diagram showing an embodiment of this invention, Figure A is a rear view, and Figure B is a diagram showing an embodiment of the invention. The figure is a cross-sectional view taken along line A and BB, Figure 3 is a diagram showing the assembly process of the main parts, Figure A shows an unfavorable example, Figure B shows the case of Figure 2, and Figure 41 shows the This is a diagram showing the mounting foot in Figure 2, where Figure A shows the surface corresponding to the fixture, and Figure B
The figure is a side view thereof. In the figure, 1 is the motor, 1b is the rotating shaft of the motor, 2 is the mounting foot, 4 is the support rod, 6 is the fixture, 6a is the crimping groove of the fixture, 8 is the support groove of the mounting foot, and 9 is the notch. be. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] Two substantially parallel support rods, a motor installed between the support rods, two mounting feet provided on the side surface of the motor and protruding in a direction symmetrical with respect to the axis of the rotation shaft, and the support rods are fitted. In the device, a support groove is provided on the outside of each of the mounting legs, facing the crimp groove, and into which the support rod is fitted, and the mounting tool is attached to the mounting foot. The crimp groove is structured to clamp the corresponding support rod, and the support groove of each of the mounting feet is provided with a notch that allows the mounting foot to rotate about the rotation center of the motor. A motor mounting device featuring: