JPS6138371Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an end bracket for an electric motor that can be used as two types of end brackets in accordance with changes in the mounting specifications of the electric motor.

The electric motor incorporated as the power source of the system set needs to be manufactured with a mounting structure suitable for the mounting space, so the shape of the end bracket must be changed as appropriate in accordance with changes in the specifications of the mounting structure.

The mounting structure for electric motors can be roughly divided into two types: (1) a cushion rubber mount method in which a bearing housing section is formed by protruding outward, and a cushion rubber for built-in mounting is fitted around the outer circumference of this bearing housing section; (2) There is a mounting foot mount method in which the mounting feet are attached to the outer periphery of the frame using fixing means such as welding.In view of these circumstances, the present invention does not require any additional work on the mounting structure of (1) and (2) above. It is an object of the present invention to provide an end bracket for an electric motor that can be used for both purposes without the need for.

The present invention will be explained below based on embodiments shown in the drawings.

FIG. 1 is a diagram showing the shape of the end bracket of the present invention, FIG. 2 is a sectional view taken along line AA, and FIG. 3 is a sectional view taken along line BB. Further, FIG. 4 is a diagram showing the attached state of the end bracket in the case of the cushion rubber mount, and FIG. 5 is a diagram showing the attached state of the end bracket in the case of the mounting foot mount.

Reference numeral 1 designates an end bracket of an electric motor formed in the shape of a lid, and the central portion thereof is bulged into a cylindrical shape by press drawing to form a bearing accommodating portion 2.

Reference numeral 3 denotes a projection for positioning the shaft center, which is extruded on both sides of the end bracket 1 by press drawing, and the projections 3 alternately project from both sides, and each one is concentric with the bearing accommodating part 2. It is arranged.

Reference numeral 4 denotes a cylindrical frame in which the stator core 5 is press-fitted and housed on its inner periphery, and 6 is a bearing for pivotally supporting the rotor 7, which is housed and fixed within the bearing housing portion 2.

Further, the protrusion 3 is punched out by a press in a half-blank shape, and is formed into a half-blank-shaped protrusion that can be tightly fitted through the punched side surface parallel to the peripheral wall of the cylindrical frame 6. It is. When half-cutting the protrusion with a press, end bracket 1
By punching at right angles to the frame 6, the half punched side surface is reliably parallel to the peripheral wall of the frame 6, and a high degree of strength and precision can be obtained.

When assembling the electric motor with the above configuration using a cushion rubber mount system, as shown in FIG. A bearing 6 is installed inside the frame 4, and the protrusion 3 is brought into contact with and engaged with the inner circumferential surface of the frame 4 for positioning, and the frame 4 and the end bracket 1 are fixed by welding or screw fastening.

Then, the cushion rubber 8 for attachment is fitted onto the outer circumferential surface of the bearing accommodating portion 2 which bulges outward.

In addition, when assembling the electric motor using the foot mount method, as shown in FIG. is attached, and the protrusion 3 is brought into contact with and engaged with the inner circumferential surface of the frame 4 for positioning, thereby fixing the frame 4 and the end bracket 1.

Then, the mounting legs 9 are attached to the outer periphery of the frame 4 by means such as welding.

According to the above structure, since the protrusions 3 are provided on both sides of the end bracket 1, it is possible to manufacture electric motors with two types of attachment methods using the end bracket 1.

On the other hand, the present invention is not limited to the embodiments described above; for example, as shown in FIG. It is obvious that the same effect can be obtained even if the configuration is configured.

As explained above, according to the present invention, parts management is easy, manufacturing costs are reduced, and a large mass production effect can be obtained.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the shape of the end bracket of the present invention, Fig. 2 is a sectional view taken along line A-A, and Fig. 3 is a cross-sectional view taken along line B-
B sectional view, Figure 4 is a diagram showing the installation state of the end bracket in case of cushion rubber mount, Figure 5 is
The figure shows a state in which the end bracket is attached in the case of a foot mount, and FIG. 6 shows another embodiment. 1...End bracket, 2...Bearing housing part,
3, 10... protrusion, 4... frame.

Claims (1)

[Scope of utility model registration request] In a lid-shaped end bracket that covers both end surfaces of a cylindrical motor frame, a central portion thereof is bulged to form a bearing accommodating portion, and the end bracket is disposed on a concentric circle of the bearing accommodating portion and is arranged on a concentric circle of the bearing accommodating portion. An end bracket for an electric motor, characterized in that half-blanked protrusions that can be closely fitted through the cut-out side surfaces parallel to the peripheral wall of the motor are formed so as to alternately protrude from both sides.