JPH0632693U - Motor mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a motor mounting structure in which vibration and noise of a motor are shielded from a metal case to reduce noise. A metal inner peripheral ring 13 is integrally formed inside a metal outer peripheral ring 11 via an elastic body 12, and the outer peripheral ring 11 or the contact surface between the inner peripheral ring 13 and the elastic body 12 is formed. The mounting metal fitting 10 having the concave-convex portion 14 and having a fitting structure is inserted and attached to the end side of the metal case 4 having the motor 3 mounted therein,
The metal case 4 and the outer peripheral ring 11 are fixed by a set screw 5, and an end bracket 17 surrounding the bearing portion 16 of the motor 3 protruding from the housing 15 is inserted and fixed to the inner peripheral ring 13 to generate from the motor 3. The elastic body 12 absorbs the generated vibration and noise.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a motor mounting structure for fixing a motor inside a case such as a pipe.

[0002]

[Prior art]

 Generally, a motor for driving an electric blind or the like is provided with a pipe-shaped case coaxially inside the blind winding shaft, the motor is mounted inside the case, and the blind winding shaft is rotated by the rotation of the motor. It has a structure that automatically opens and closes.

In the conventional structure in which the motor is attached to the pipe-shaped case as described above, for example, as shown in FIG. 7, a geared motor 3 in which a motor unit 1 and a gear unit 2 are integrally assembled is used as a pipe-shaped motor. It has a structure in which it is inserted into the metal case 4 and the gear portion 2 is fixed from the outer peripheral side by a set screw 5 from the outer peripheral side of the end portion of the case 4. An unillustrated gear is attached to the tip of the shaft 6 protruding from the gear portion 2 of the geared motor 3, and an encoder that detects the number of rotations by combining a magnet and a hall element at the end of the shaft 6 on the opposite side. 8 is attached.

However, in the conventional mounting structure, the geared motor 3 is directly fixed to the pipe-shaped metal case 4 with the set screw 5, so that the vibration and noise of the motor 3 are transmitted to the metal case 4, and this is There was a problem that noise resonated due to resonance.

Further, the geared motor 3 and the encoder 8 are integrally joined, and these are connected to the metal case 4 at the end of the gear portion 2, and the encoder 8 side is free and has a cantilever support structure. It became unstable on the side, causing vibration and noise to increase further.

[0006]

[Problems to be solved by the device]

 The present invention eliminates the above drawbacks, and provides a motor mounting structure in which vibration and noise of the motor are isolated from the metal case to reduce noise.

[0007]

[Means for Solving the Problems]

 According to a first aspect of the present invention, a metal inner peripheral ring is integrally formed on the inner side of a metal outer peripheral ring via an elastic body, and the outer peripheral ring or the inner peripheral ring and the elastic body are formed. A mounting metal fitting with a concavo-convex portion formed on the contact surface was fitted to the end side of the metal case with the motor mounted inside to fix the case and the outer peripheral ring, and protrude from the housing. An end bracket that surrounds a bearing portion of the motor is inserted into and fixed to the inner peripheral ring.

Further, according to a second aspect of the present invention, an elastic body is formed inside the outer peripheral ring made of metal so as to be longer in the axial direction than the outer ring, and an elastic body having a bolt insertion hole opened along the axial direction is interposed. A metal inner ring formed integrally with the outer ring or the inner ring and a concavo-convex portion formed on the contact surface of the elastic body to form a fitting structure. Insert the end face of the case into the motor by inserting the end face of the elastic body into contact with the motor, fix the case and the outer ring of the mounting bracket, and insert the bolt into the bolt insertion hole formed in the elastic body. Then, the motor and the elastic body are fixed to each other, and the shaft of the motor is penetrated through the inner peripheral ring.

[0009]

[Action]

 In the motor mounting structure according to claim 1 of the present invention, the projecting end bracket of the motor is inserted and fixed to the inner peripheral ring of the mounting bracket, and the outer peripheral ring is fixed to the metal case by a set screw through an elastic body. The motor is securely mounted inside the metal case because it is fixed to. Furthermore, the encoder side is elastically supported by the inner surface of the metal case to form a structure that supports both ends and is stable, and vibration and noise are reduced. Vibration and noise generated from the motor are absorbed by the elastic body that is integrally interposed between the inner ring and the outer ring of the mounting bracket, and are prevented from being transmitted to the metal case side. Generation of noise can be reduced. Furthermore, due to the torque of the motor, a twisting force is generated between the inner ring that fits the end bracket and the elastic body. It is possible to prevent peeling of the body.

Further, in the motor mounting structure according to the second aspect of the invention, the motor is connected to the elastic body of the mounting bracket with a bolt, and the outer peripheral ring is fixed to the metal case with a set screw. Securely mounted inside the case. Therefore, the vibration and noise generated from the motor are absorbed by the elastic body and are prevented from being transmitted to the metal case side, so that the generation of vibration and noise can be reduced as a whole. When fixing the motor and the elastic body with bolts, the elastic body tries to be tightened and contracts toward the radial center, but contracts because the inner ring made of metal is attached inside. Without doing this, the space between the shaft and the shaft is secured. Further, the torque of the motor is applied to the elastic body connected by the bolts, and a twisting force is generated between this and the outer ring. Can be prevented.

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2 show a mounting tool 10, in which a metal inner ring 13 is integrally formed inside a metal outer ring 11 via an elastic body 12 such as rubber. A fitting structure is formed by forming uneven portions 14 on the contact surface between the outer circumference of the ring 13 and the inner circumference of the elastic body 12.

As shown in FIG. 3, a geared motor 3 in which a motor portion 1 and a gear portion 2 are integrally assembled is inserted inside the metal case 4 formed of a pipe, and the metal case 4 is inserted from the end side thereof. The mounting bracket 10 is inserted, and the end bracket 17 surrounding the bearing portion 16 protruding from the housing 15 of the geared motor 3 is inserted and fitted into the inner peripheral ring 13 of the mounting bracket 10, and the outer peripheral ring 11 of the mounting bracket 10 is fitted. Is fixed to the metal case 4 with a set screw 5.

A gear (not shown) is attached to the tip of the shaft 6 protruding from the metal case 4 of the geared motor 3, and a magnet and a hall element are combined to rotate at the end of the shaft 6 on the opposite side. An encoder 8 for detecting the number is attached. A boss 19 with a thread groove formed on the inner circumference is joined to the tip of this encoder cover 18, and a tire-shaped elastic body 20 is attached to this, and the bolt 22 that has passed through the washer plate 21 is passed through the elastic body 20. The elastic body 20 is fixed by screwing it onto the boss 19 and tightening the elastic body 20, and the elastic body 20 is crimped to the inner surface of the metal case 4 to fix the encoder 8 side.

In the above-mentioned mounting structure, the protruding end bracket 17 of the geared motor 3 is inserted and fixed to the inner peripheral ring 13 of the mounting bracket 10, and further the outer peripheral ring 11 is attached to the metal case by the set screw 5 via the elastic body 12. Since the geared motor 3 is fixed to the metal case 4, the geared motor 3 is securely attached to the inside of the metal case 4. Furthermore, since the encoder 8 side is supported by the inner surface of the metal case 4 by the tire-like elastic body 20, it has a structure of supporting both ends and is stable, and vibration and noise are reduced. Further, vibrations and noise generated from the geared motor 3 are absorbed by the elastic body 12 which is integrally interposed between the inner peripheral ring 13 and the outer peripheral ring 11 of the mounting bracket 10 and is prevented from being transmitted to the metal case 4 side. Therefore, it is possible to reduce the generation of vibration and noise as a whole.

Further, due to the torque of the geared motor 3, a twisting force is generated between the elastic ring 12 and the inner circumferential ring 13 into which the end bracket 17 is fitted. Due to the structure, the peeling of the elastic body 12 can be prevented.

4 to 6 show another embodiment of the present invention. As shown in FIG. 4, the mounting member 10 has an elastic body 12 such as rubber placed inside a metal outer ring 11 as shown in FIG. As a result, a metal inner peripheral ring 13 is integrally formed, and a concavo-convex portion 14 is formed on the contact surface between the inner peripheral of the outer peripheral ring 11 and the outer periphery of the elastic body 12 to form a fitting structure. Further, as shown in FIG. 5, the elastic body 12 is formed to be longer than the outer peripheral ring 11 in the axial direction, has three bolt insertion holes 24 ... Opened along the axial direction, and has a circular shape on the back side. Three concave grooves 25 are formed.

As shown in FIG. 6, a geared motor 3 in which a motor portion 1 and a gear portion 2 are integrally assembled is inserted inside the metal case 4 formed of a pipe, and the metal case 4 is inserted from the end side thereof. Insert the mounting bracket 10, penetrate the shaft 6 into the inner ring 13 of the mounting bracket 10, and bring the end face of the elastic body 12 into contact with the geared motor 3 so that the elastic body 12 has bolt insertion holes 24 ... The bolt 22 is inserted and fixed, and the elastic body of the bolt 22 that integrally connects the geared motor 3 and the elastic body 12 is fixed.

At this time, when the elastic body 12 is tightened with the bolt 22, the elastic body 12 expands in the radial direction and comes into close contact with the inside of the metal case 4. Next, the outer peripheral ring 11 of the mounting bracket 10 is fixed to the metal case 4 with the set screw 5 to support the geared motor 3. On the encoder 8 side, similarly to the above-described embodiment, the tire-shaped elastic body 20 is attached, the bolt 22 is screwed to tighten the elastic body 20, and the elastic body 20 is fixed, and the elastic body 20 is fixed to the metal case. The encoder 8 side is fixed by being pressed onto the inner surface of 4.

In the above mounting structure, the geared motor 3 is connected to the elastic body 12 of the mounting bracket 10 by the bolts 22, and the outer peripheral ring 11 is fixed to the metal case 4 by the set screw 5. Is securely attached to the inside of the metal case 4. Therefore, the vibration and noise generated from the geared motor 3 are absorbed by the elastic body 12 and the transmission to the metal case 4 side is blocked, so that the generation of vibration and noise can be reduced as a whole. When fixing the elastic body 12 and the geared motor 3 with the bolt 22, the elastic body 12 is tightened up and tries to contract toward the radial center, but the inner ring 13 made of metal is attached inside. Since it does not contract, the gap with the shaft 6 is secured.

Further, the torque of the geared motor 3 is applied to the elastic body 12 connected by the bolts 22, and a twisting force is generated between the elastic body 12 and the outer peripheral ring 11, but an uneven portion 14 is formed between them to form a fitting structure. Therefore, peeling of the elastic body 12 can be prevented.

It should be noted that, in the above-described embodiment, the case where the uneven portion 14 is formed on the contact surface between the outer circumference of the inner peripheral ring 13 and the inner circumference of the elastic body 12 and the contact between the inner side of the outer peripheral ring 11 and the outer circumference of the elastic body 12 Although the case where the concavo-convex portion 14 is formed on the surface is shown, the concavo-convex portions 14 and 14 may be formed on both the inner circumference and the outer circumference of the elastic body 12 that contacts the outer peripheral ring 11 and the inner peripheral ring 13. Further, in the above embodiment, the geared motor 3 in which the motor unit 1 and the gear unit 2 are integrally formed has been described, but the present invention can be applied to the case of mounting a normal motor. The outer ring 11 is not limited to a circular shape, but may be an elliptical shape or a polygonal shape.

[0022]

[Effect of device]

 As described above, according to the present invention, the motor is mounted in the metal case by the mounting bracket integrally formed with the metal inner peripheral ring via the elastic body inside the metal outer peripheral ring. It is possible to obtain a motor mounting structure in which the vibration and noise are absorbed by the elastic body and the transmission to the metal case is blocked to reduce the noise.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting bracket according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing the fitting of FIG.

FIG. 3 is a vertical cross-sectional view showing a structure in which a geared motor is attached to a metal case using the attachment fitting of FIG.

FIG. 4 is a front view showing a mounting bracket according to another embodiment of the present invention.

5 is a vertical cross-sectional view showing the fitting of FIG.

6 is a cross-sectional view showing a structure in which a geared motor is attached to a metal case by using the attachment fitting of FIG.

FIG. 7 is a cross-sectional view showing a structure in which a conventional geared motor is attached to a metal case.

[Explanation of sign]

 1 Motor part 2 Gear part 3 Geared motor 4 Metal case 5 Set screw 6 Shaft 8 Encoder 10 Mounting bracket 11 Outer ring 12 Elastic body 13 Inner ring 14 Concavo-convex part 15 Housing 16 Bearing part 17 End bracket 18 Encoder cover 19 Boss 20 Tire -Shaped elastic body 22 bolt 24 bolt insertion hole

Claims (2)

[Scope of utility model registration request] 1. An inner peripheral ring made of metal is integrally formed inside an outer peripheral ring made of metal via an elastic body, and an uneven portion is formed on a contact surface between the outer peripheral ring or the inner peripheral ring and the elastic body. Then, the mounting bracket with the fitting structure is inserted and attached to the end side of the metal case with the motor installed inside to fix the case and the outer ring, and the end bracket surrounding the bearing part of the motor protruding from the housing. A motor mounting structure characterized by being inserted and fixed to the inner ring. 2. An inner peripheral ring made of metal is formed inside an outer peripheral ring made of metal, and the inner peripheral ring made of metal is formed through an elastic body having a longer axial direction than that of the outer peripheral ring and having bolt insertion holes formed along the axial direction. A mounting metal fitting, which is integrally formed and has a fitting structure in which a concavo-convex portion is formed on the contact surface between the outer ring or the inner ring and the elastic body, has the elastic member on the end side of the metal case having the motor mounted inside. Insert the end face of the body into contact with the motor to fix it, fix the case and the outer ring of the fitting, and fix the motor and the elastic body by inserting bolts into the bolt insertion holes opened in the elastic body. The motor mounting structure is characterized in that the shaft of the motor is passed through the inner peripheral ring.