JP2022173948A - Fitting structure and motor frame - Google Patents

Abstract

To provide a fitting structure with high rigidity.SOLUTION: A fitting structure fitted to a motor base 300 of an automobile test system, comprises: a motor frame 10 in which a side surface is orthogonal to a bottom surface; and an angle rest 20 for fixing the motor frame 10 to the motor base. The angle rest 20 has: an L-shaped fixing member 21 including a side part provided in parallel with the side surface to fix the motor frame in a horizontal direction, and a bottom part provided in parallel with the bottom surface to fix the motor frame in a vertical direction; and a reinforcement member 22 for reinforcing the L-shaped fixing member 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a mounting structure and a motor frame.

Conventionally, in an automobile test system using a dynamometer, it is known that a motor frame attached to a motor base is provided with a notch in order to realize a layout equivalent to that of an actual vehicle (see FIG. 6).

For example, in Patent Document 1, a horizontal fixing member fixed to a base and a vertical fixing member fixed to a pillar are provided. Disclosed is a mounting structure for a vibration damping device that reduces the load applied to a column even if the displacement of the column increases.

JP 2019-85779 A

As shown in FIG. 6, the conventional motor frame 10B has a triangular portion T in order to compensate for the reduction in rigidity due to the notch portion D. As shown in FIG. However, there is a problem that the rigidity of the motor frame 10B is not sufficient when the size of the motor is increased due to the increase in rotation speed and torque.

An object of the present disclosure made in view of such circumstances is to provide a highly rigid mounting structure.

A mounting structure according to one embodiment is a mounting structure to be mounted on a motor base of an automobile test system, and includes a motor frame having a side surface and a bottom surface perpendicular to each other, and an angle plate for fixing the motor frame to the motor base. , the tombstone is an L-shaped fixation including a side part parallel to the side surface for fixing the motor frame horizontally and a bottom part parallel to the bottom surface for fixing the motor frame vertically. and a reinforcing member that reinforces the L-shaped fixing member.

A mounting structure according to one embodiment is a mounting structure to be mounted on a motor base of an automobile test system, and includes a motor frame having a side surface and a bottom surface perpendicular to each other, and an angle plate for fixing the motor frame to the motor base. , the tombstone comprises a side surface fixing member provided in parallel with the side surface and fixing the motor frame in a horizontal direction; a bottom surface fixing member provided in parallel with the bottom surface and fixing the motor frame in a vertical direction; and a reinforcing member that reinforces the side fixing member and the bottom fixing member.

A motor frame according to one embodiment is a motor frame provided in a mounting structure attached to a motor base of an automobile test system, and is characterized in that the side surface and the bottom surface are perpendicular to each other.

According to the present invention, it is possible to provide a highly rigid mounting structure.

It is a perspective view showing an example of composition of attachment structure concerning a 1st embodiment. It is a perspective view showing an example of the composition of the motor frame concerning a 1st embodiment. It is a perspective view which shows an example of a structure of the mounting structure which concerns on 2nd Embodiment. It is a side view which shows an example of a structure of the mounting structure which concerns on 2nd Embodiment. It is a bottom view showing an example of composition of attachment structure concerning a 2nd embodiment. FIG. 10 is a diagram showing an example of the level of rigidity of a motor frame according to a conventional example; It is a figure which shows an example of the rigidity level of the mounting structure which concerns on 2nd Embodiment. It is a figure which shows an example of the rigidity level of the mounting structure which is not provided with the reinforcing member which concerns on 2nd Embodiment. It is a figure which shows an example of the rigidity level of the mounting structure which concerns on 2nd Embodiment. FIG. 11 is a perspective view showing an example of a configuration of a motor frame according to a conventional example;

An embodiment of the present invention will be described in detail below with reference to the drawings. In principle, the same reference numerals are given to the same components, and redundant explanations are omitted. In each drawing, for convenience of explanation, the ratio of length to width of each configuration does not necessarily match the actual ratio.

Further, hereinafter, for convenience of explanation, the term “side surface” means a surface parallel to the vertical direction. Also, the "bottom" means a plane parallel to the horizontal direction. However, these terms are defined for convenience only and should not be construed as limiting.

[First embodiment]
<Configuration of mounting structure>
An example of the configuration of the mounting structure 100 according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG.

Mounting structure 100 is a mounting structure that is attached to a motor base 300 of an automotive test system. The mounting structure 100 includes a motor frame 10 having a side surface S ₁ and a bottom surface S ₂ perpendicular to each other, and a tombstone 20 fixing the motor frame 10 to the motor base 300 .

A notch portion D is provided in the motor frame 10 . The rigidity of the motor frame 10 is reduced by providing the notch D, but by joining the tombstone 20, the reduction in rigidity due to the notch D is reduced even when the motor rotates at high speed. be.

The motor frame 10 is provided with, for example, _eight tapped holes 11 on the side surface S1. The motor frame 10 is provided with, for example, four drilled holes ₁₂ on the bottom surface S2. The number of tapped holes 11 and the number of drilled holes 12 are not particularly limited.

The motor frame 10 is preferably made of a material having a high Young's modulus, such as iron and steel.

The tombstone 20 has an L-shaped fixing member 21 including a side portion C ₁ and a bottom portion C ₂ and a reinforcing member 22 . The side portion C1 is provided parallel to the _side surface S1 of the motor frame ₁₀ and fixes the motor frame 10 in the horizontal direction. The bottom portion _C2 is provided parallel to the _bottom surface S2 of the motor frame 10 and fixes the motor frame 10 in the vertical direction.

The L _- shaped fixing member 21 is provided with, for example, eight drilled holes 23 in the side portion C1. The L-shaped fixing member 21 is provided with, for example, four drilled holes 24 in the bottom portion _C2 . The number of drilled holes 23 and the number of drilled holes 24 are not particularly limited.

A bolt is screwed into the drilled hole 23 of the L-shaped fixing member 21 and the tapped hole 11 of the motor frame 10 corresponding to the drilled hole 23, and the motor frame 10 and the angle plate 20 are joined together. . A bolt is inserted through the drilled hole 24 of the L-shaped fixing member 21 and the drilled hole 12 of the motor frame 10, and a nut is tightened with the motor base 300 therebetween. Attached to base 300 .

The L-shaped fixing member 21 is preferably made of a material having a high Young's modulus, such as iron and steel.

The reinforcing member 22 reinforces the L-shaped fixing member 21 . The reinforcing member 22 is provided between the side portion C ₁ of the L-shaped fixing member 21 and the bottom portion C ₂ of the L-shaped fixing member 21 . The reinforcing member 22 is preferably formed of a plurality of substantially triangular members, and these members are preferably provided at predetermined intervals. The greater the number of reinforcing members 22, the more rigid the mounting structure 100 can be.

The reinforcing member 22 is preferably made of a material having a high Young's modulus, such as iron and steel.

As described above, the mounting structure 100 according to the first embodiment includes the motor frame ₁₀ having the side surface S1 and the bottom surface S2 perpendicular to each other, and the tombstone ₂₀ fixing the motor frame 10 to the motor base 300 . The tombstone 20 has an L-shaped fixing member 21 that fixes the motor frame 10 horizontally and vertically, and a reinforcing member 22 that reinforces the L-shaped fixing member 21 . By fixing the motor frame 10 in the horizontal direction and the vertical direction with the scales 20, it is possible to realize the mounting structure 100 having higher rigidity than the conventional motor frame 10B.

Moreover, since the mounting structure 100 according to the first embodiment has a simple configuration, it is easy to assemble at low cost, and has the advantage of being able to reduce the size of the automobile test system. Furthermore, since the motor frame 10 having two orthogonal surfaces can arbitrarily adjust the positions of drilled holes or tapped holes, the degree of freedom in layout when mounting a motor in an automobile test system can be increased.

[Second embodiment]
<Configuration of mounting structure>
An example of the configuration of a mounting structure 200 according to the second embodiment will be described with reference to FIGS. 2, 3A, 3B, and 3C.

The mounting structure 200 is a mounting structure that is attached to the motor base 300 of the automotive test system. The mounting structure 100 includes a motor frame 10 having a side surface S1 and _a bottom surface S2 perpendicular to _each other, and a tombstone 30 that fixes the motor frame 10 to the motor base 300. As shown in FIG.

A notch portion D is provided in the motor frame 10 . Although the rigidity of the motor frame 10 is lowered by providing the cutout portion D, the reduction in rigidity due to the cutout portion D is reduced by joining the tombstone 30 even when the motor rotates at high speed. be.

The motor frame 10 is provided with, for example, _eight tapped holes 11 on the side surface S1. The motor frame 10 is provided with, for example, four drilled holes ₁₂ on the bottom surface S2. The number of tapped holes 11 and the number of drilled holes 12 are not particularly limited.

The tombstone 30 includes side fixing members 31 , bottom fixing members 32 , and reinforcing members 33 . A side adapter plate 34 may be inserted between the side fixing member 31 and the motor frame 10 , and a bottom adapter plate 35 may be inserted between the bottom fixing member 32 and the motor frame 10 . Note that the side face adapter plate 34 and the bottom face adapter plate 35 are not essential components in the mounting structure 200 because they may be inserted appropriately according to the shape of the motor frame 10 .

The side fixing member 31 is provided parallel to the side S1 of the motor frame ₁₀ and fixes the motor frame 10 in the horizontal direction. That is, the side fixing member 31 horizontally fixes the motor frame 10 via the side adapter plate 34 . The side fixing member 31 is provided with, for example, four drilled holes 311 (see FIG. 3B). The number of drilled holes 311 is not particularly limited.

The bottom surface fixing member 32 is provided parallel to the _bottom surface S2 of the motor frame 10, and fixes the motor frame 10 in the vertical direction. That is, the bottom surface fixing member 32 vertically fixes the motor frame 10 via the bottom surface adapter plate 35 . The bottom fixing member 32 is provided with, for example, eight drilled holes 321 and ten drilled holes 322 (see FIG. 3C). The number of drilled holes 321 and the number of drilled holes 322 are not particularly limited.

The side adapter plate 34 is provided between the side S ₁ of the motor frame 10 and the side fixing member 31 . The side face adapter plate 34 is provided with, for example, eight drilled holes 341 and four tapped holes 342 (see FIG. 3B). The number of drilled holes 341 and the number of tapped holes 342 are not particularly limited.

The bottom adapter plate 35 is provided between the bottom surface S ₂ of the motor frame 10 and the bottom fixing member 32 . The bottom face adapter plate 35 is provided with, for example, eight tapped holes 351 and four tapped holes 352 (see FIG. 3C). The number of tapped holes 351 and tapped holes 352 are not particularly limited.

Bolts are screwed into the drilled holes 341 of the side adapter plate 34 and the tapped holes 11 of the motor frame 10 corresponding to the drilled holes 23, so that the side adapter plate 34 and the motor frame 10 are fastened together. Join. The angle plate 30 and the side adapter plate 34 are joined by screwing bolts into the drilled holes 311 of the side fixing member 31 and the tapped holes 342 of the side adapter plate 34 .

The bottom adapter plate 35 and the motor frame 10 are joined together by screwing bolts into the tapped holes 352 of the bottom adapter plate 35 and the drilled holes 12 of the motor frame 10 . Bolts are screwed into the drilled holes 321 of the bottom surface fixing member 32 and the tapped holes 351 of the bottom surface adapter plate 35 and tightened to join the angle plate 30 and the bottom surface adapter plate 35 together. The motor frame 10 and the tombstone 30 are attached to the motor base 300 by inserting bolts through the drilled holes 322 of the bottom fixing member 32 and tightening the nuts.

The side fixing member 31 and the bottom fixing member 32 are preferably made of a material having a high Young's modulus, such as iron and steel.

The side adapter plate 34 and the bottom adapter plate 35 are preferably made of a material having a high Young's modulus, such as iron, steel, and the like.

The reinforcing member 33 reinforces the side fixing member 31 and the bottom fixing member 32 . The reinforcing member 33 is provided between the side fixing member 31 and the bottom fixing member 32 . The reinforcing member 33 is preferably formed of a plurality of substantially triangular members, and these members are preferably provided at predetermined intervals. As the number of reinforcing members 33 increases, the rigidity of the mounting structure 200 can be increased.

The reinforcing member 33 is preferably made of a material having a high Young's modulus, such as iron and steel.

As described above, the mounting structure 200 according to the _second embodiment includes the motor frame ₁₀ having the side surface S1 and the bottom surface S2 perpendicular to each other, and the tombstone 30 fixing the motor frame 10 to the motor base 300 . The tombstone 30 includes a side fixing member 31 for fixing the motor frame 10 in the horizontal direction, a bottom fixing member 32 for fixing the motor frame 10 in the vertical direction, and a reinforcing member for reinforcing the side fixing member 31 and the bottom fixing member 32. 33 and . By securely fixing the motor frame 10 in the horizontal direction and the vertical direction by the tongs 30, the mounting structure 200 with extremely high rigidity can be realized as compared with the conventional motor frame 10B.

<Comparison between the motor frame according to the conventional example and the mounting structure according to the second embodiment>
A comparison was made between the rigidity of the motor frame 10B according to the conventional example shown in FIG. 4A and the rigidity of the mounting structure 200 according to the second embodiment shown in FIG. 4B. In FIGS. 4A and 4B, region X indicates a region that is difficult to deform. In FIGS. 4A and 4B, a region Y indicates a deformable region.

It can be seen from FIG. 4A that in the conventional motor frame 10B, the area X occupies a relatively small proportion and the area Y occupies a relatively large proportion.

Further, in the motor frame 10B according to the conventional example, the natural frequency was 270 [Hz] as a result of analyzing the natural frequency by simulation. Since the rotation frequency of the motor is 333 [Hz] when the rotation speed is 20000 [min ⁻¹ ], the natural frequency of the motor frame 10B according to the conventional example was smaller than the rotation frequency of the motor.

On the other hand, it can be seen from FIG. 4B that in the mounting structure 200 according to the second embodiment, the area X occupies a relatively large proportion and the area Y occupies a relatively small proportion.

Further, in the mounting structure 200 according to the second embodiment, the natural frequency was analyzed by simulation, and the natural frequency was 377 [Hz]. Since the rotation frequency of the motor is 333 [Hz] when the rotation speed is 20000 [min ⁻¹ ], the natural frequency of the mounting structure 200 according to the second embodiment is higher than the rotation frequency of the motor.

Therefore, it can be seen that the mounting structure 200 according to the second embodiment is less likely to deform than the motor frame 10B according to the conventional example. In other words, it is difficult for the rotation frequency of the motor and the natural frequency of the mounting structure 200 to resonate to generate a large vibration, and even when the motor rotates at high speed, the mounting structure 200 with high rigidity can be realized. It is suggested.

<Comparison between mounting structure without reinforcing member and mounting structure with reinforcing member>
A comparison was made between the rigidity of the mounting structure 200X having no reinforcing member shown in FIG. 5A and the rigidity of the mounting structure (the mounting structure having the reinforcing member) 200 according to the second embodiment shown in FIG. 5B. In FIGS. 5A and 5B, the light gradation area X indicates an area with a small amount of displacement. In FIGS. 5A and 5B, dark gradation region Y indicates a region with a large amount of displacement.

Focusing _on the region j1 from FIG. 5A, it can be seen that the dark gradation region Y occupies a relatively large proportion of the mounting structure 200X having no reinforcing member. Focusing on the areas _other than the area j1, it can be seen that the light gradation area X occupies a relatively small proportion.

Further, in the mounting structure 200X having no reinforcing member, the natural frequency was analyzed by simulation, and the natural frequency was 197 [Hz]. Since the rotation frequency of the motor is 333 [Hz] when the rotation speed is 20000 [min ⁻¹ ], the natural frequency of the mounting structure 200X having no reinforcing member was smaller than the rotation frequency of the motor.

On the other hand, focusing on the region j2 from _FIG . 5B, it can be seen that the proportion of the dark gradation region Y in the mounting structure 200 according to the second embodiment is extremely small. Focusing on the areas other _than the area j2, it can be seen that the light gradation area X occupies a relatively large proportion.

Further, in the mounting structure 200 according to the second embodiment, the natural frequency was analyzed by simulation, and the natural frequency was 377 [Hz]. Since the rotation frequency of the motor is 333 [Hz] when the rotation speed is 20000 [min ⁻¹ ], the natural frequency of the mounting structure 200 according to the second embodiment is higher than the rotation frequency of the motor.

Therefore, it can be seen that the mounting structure 200 according to the second embodiment is less likely to deform than the mounting structure 200X that does not have a reinforcing member. In other words, it is difficult for the rotation frequency of the motor and the natural frequency of the mounting structure 200 to resonate and generate large vibrations. It is suggested that a high mounting structure 200 can be realized.

Although the above embodiments have been described as representative examples, it will be apparent to those skilled in the art that many modifications and substitutions can be made within the spirit and scope of this disclosure. Therefore, the present invention should not be construed as limited by the embodiments described above, and various modifications and changes are possible without departing from the scope of the appended claims.

10 Motor frame 11, 342, 351, 352 Tapped hole 12, 23, 24, 311, 321, 322, 341 Drilled hole 20 Angle 21 L-shaped fixing member 22 Reinforcing member 30 Angle 31 Side fixing member 32 Bottom fixing member 33 Reinforcement Member 34 Side adapter plate 35 Bottom adapter plate 100, 200, 200X Mounting structure 300 Motor base

Claims (3)

A mounting structure for mounting on a motor base of an automotive test system, comprising:
a motor frame whose side surface and bottom surface are perpendicular to each other;
an angle plate for fixing the motor frame to the motor base;
The tombstone is
an L-shaped fixing member including a side portion provided parallel to the side surface for fixing the motor frame in the horizontal direction, and a bottom portion provided parallel to the bottom surface for fixing the motor frame in the vertical direction;
a reinforcing member that reinforces the L-shaped fixing member;
mounting structure. A mounting structure for mounting on a motor base of an automotive test system, comprising:
a motor frame whose side surface and bottom surface are perpendicular to each other;
an angle plate for fixing the motor frame to the motor base;
The tombstone is
a side fixing member that is provided parallel to the side surface and fixes the motor frame in a horizontal direction;
a bottom fixing member provided parallel to the bottom and fixing the motor frame in a vertical direction;
a reinforcing member that reinforces the side fixing member and the bottom fixing member;
mounting structure. A motor frame provided in a mounting structure attached to a motor base of an automotive test system,
the side surface and the bottom surface are perpendicular to each other,
motor frame.

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