JPH0595169U - Motor mounting floating structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Motor mounting floating that can securely prevent vibration of the motor while securely fixing the anti-vibration rubber without burning and reliably preventing the rotation of the bolt. Provide structure. [Structure] A cylindrical vibration-damping rubber 54 for suppressing vibration transmission of a motor is press-fitted into a mounting hole 62 formed in a mounting portion 52 of a motor housing, and a cylindrical collar 56 is fitted into the vibration-proof rubber 54.
And a bolt 58 having a square head 76 that presses into the
By press-fitting, the mounting portion 52 and the bolt 58 are completely isolated from each other via the vibration-proof rubber 54, and the square head 76
Securely prevent the bolt 58 from rotating.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a motor mounting floating structure, and more particularly to a motor mounting floating structure that suppresses vibration transmission of small motors such as power windows and sunroofs for automobiles.

[0002]

[Prior Art]

 Conventionally, this motor mounting floating structure is roughly classified into a structure in which bolts and the like incorporated in the motor are fixed by rotating, and a structure in which the bolts and the like incorporated in the motor do not rotate and are fixed. There is a structure in which nuts are fixed by rotating them.

There is a motor mounting floating structure in which a nut or the like is rotated and fixed to a bolt or the like in the latter fixed state as shown in FIG.

In this motor mounting floating structure, the bolts 14 and 16 integrally having the flanges 10 and 12 are fixed with the anti-vibration rubber 18 by baking between them with the flanges 10 and 12 facing each other. The bolts 14 and 16 are integrated through a vibrating rubber 18.

Then, one bolt 14 is passed through a mounting hole 22 formed in a mounting portion 20 of the motor housing and is tightened and fixed by a nut 24, and the other bolt 16 is mounted in a mounting hole 28 of a member 26 on the vehicle body side. It is made to penetrate and is fixed by tightening with a nut 30.

Therefore, the motor side bolt 14 and the vehicle body side bolt 16 are isolated from each other by the anti-vibration rubber 18, and it is possible to prevent the vibration from the motor side from being transmitted to the vehicle body side.

However, in the conventional motor mounting floating structure, since the anti-vibration rubber 18 is baked and fixed, the pair of bolts 14 and 16 are connected and integrated. The cost for baking is high, the cost is high, and if the baking is insufficient, the anti-vibration rubber 18 may be easily peeled off, and the anti-vibration rubber 18 may be damaged by twisting. There was a problem that it was not appropriate.

Therefore, conventionally, a motor mounting floating structure as shown in FIG. 8 has been adopted as a means for suppressing the vibration transmission of the motor without baking and fixing the anti-vibration rubber.

In this motor mounting floating structure, a cylindrical vibration damping rubber 36 is press-fitted into a mounting hole 34 formed in a mounting portion 32 of a motor housing, and a cylindrical collar 38 is inserted into the vibration damping rubber 36. And a bolt 40 is press-fitted into the collar 38. A detent plate 42 having a substantially C-shaped cross section is press-fitted between the bolt 40 and the anti-vibration rubber 36, and a part of the detent plate 42 is brought into contact with the outer surface of the mounting portion 32 of the motor housing. This prevents the rotation of the bolt 40 and the anti-vibration rubber 36. Further, a knurl 44 is formed on a part of the outer peripheral surface of the bolt 40, and the knurl 44 is also press-fitted and closely attached to the inner wall of the collar 38 and the rotation stop plate 42 to prevent the rotation of the bolt 40 itself. I am trying.

Therefore, the anti-vibration rubber 36a can be attached without using the costly fixing by baking, and the rotation of the bolt 40 can be prevented.

At the time of mounting, the bolt 40 is passed through the mounting hole 28 of the member 26 on the vehicle body side and is tightened and fixed by the nut 30.

[0012]

In the conventional motor mounting floating structure shown in FIG. 8 in which the vibration-proof rubber 40 is press-fitted and fixed to the mounting portion 32 of the motor housing without burning, the bolt 40 and the motor Although a structure is used in which the mounting portion 32 of the housing is isolated by a vibration proof rubber 36, a rotation stop plate 42 is press-fitted between the bolt 40 and the vibration proof rubber 36 in order to prevent the rotation of the bolt 40. However, a part thereof is brought into contact with the mounting portion 32 of the motor housing, so that the bolt 40 and the motor housing are connected via the rotation stop plate 42, and the effect of suppressing the vibration transmission of the motor is achieved. However, there was a problem that it was not suitable for achieving the original purpose of the floating structure.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to securely fix a vibration proof rubber without burning and to prevent a rotation of a bolt. Another object is to provide a motor mounting floating structure capable of reliably suppressing the transmission of motor vibration.

[0014]

[Means for Solving the Problems]

 In order to achieve the above object, the motor mounting floating structure according to claim 1 is a motor mounting floating structure in which an elastic member is interposed to mount the motor on a vehicle body side. The motor mounting floating structure is press-fitted into a mounting portion of a motor housing to transmit vibration of the motor. A vibration-proof cylindrical elastic member, a cylindrical collar press-fitted into the elastic member, and a rectangular head that engages with the elastic member to prevent rotation, It is characterized in that it is provided with a bolt for mounting on the vehicle body side that is press-fitted inside.

Further, in the motor mounting floating structure according to a second aspect, in the first aspect, the collar has a retaining flange portion that engages with the elastic member at a position opposite to a head portion of the bolt. It is characterized by having.

[0016]

[Action]

 In the motor mounting floating structure according to claim 1, a cylindrical vibration-proof elastic member is press-fitted into the mounting portion of the motor housing, and the cylindrical vibration-proof color is press-fitted into the elastic member. At the same time, press the bolt into this collar.

Therefore, the elastic member is compressed by the press-fitting of the bolt, is reliably fixed to the mounting portion of the motor housing, and is prevented from falling off.

Further, the bolt and the mounting portion of the motor housing are completely separated by the elastic member.

Further, when the bolt is press-fitted, the square bolt head is coupled with the elastic member.

Therefore, even if a rotational force is applied to the bolt when tightening the nut, the square bolt head suppresses the rotation, and the rotation of the bolt is reliably prevented.

Further, in the motor mounting floating structure according to claim 2, the retaining flange formed on the collar cooperates with the head of the bolt to hold the elastic body by sandwiching it. It will prevent the bolt and collar from falling off.

Further, due to the presence of the flange portion, the mounting seat surface of the collar becomes large, and the stability at the time of mounting is enhanced.

[0023]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

1 and 2 are views showing an embodiment of the present invention.

This embodiment shows a motor mounting floating structure in a small DC motor used for a power window of an automobile, a sunroof, or the like.

In FIG. 2, the motor 50 is provided with three mounting portions 52 for mounting the motor 50 on the vehicle body side in the motor housing 51, and the motor mounting floating portions are respectively mounted on these three mounting portions 52. The structure is being adopted.

As shown in FIG. 1, the motor mounting floating structure includes a vibration damping rubber 54 as an elastic member for vibration damping, a collar 56, and a bolt 58.

The vibration-proof rubber 54 is press-fitted into the mounting portion 52 of the motor housing 51 to suppress the vibration transmission of the motor 50, and is made of a material having rubber elasticity such as rubber or elastomer. Is becoming An annular recess 60 is formed in the central portion in the longitudinal direction of the outer peripheral surface of the anti-vibration rubber 54, and when the recess 60 is press-fitted into the mounting hole 62 formed in the mounting portion 52, the annular recess protruding from the mounting hole 60. It is adapted to be engaged with the convex portion 64 and to be prevented from falling off.

In addition, a square detent recess 68 for preventing rotation of the bolt 58 is formed on the outer periphery of one end portion (left side in FIG. 1) of the through hole 66 of the anti-vibration rubber 54, and the other end side (see FIG. An engaging recess 70 for locking the collar 56 is formed on the outer periphery (on the right side of 1). A bolt 58 and a collar 56 are press-fitted to the outer periphery of the engaging recess 70, and a taper portion 71 is formed to expand outward because the vibration-proof rubber 54 is compressed by the length of the collar 56. When the nut is tightened, the anti-vibration rubber 54 around the nut is compressed so that stable mounting can be achieved.

The collar 56 is press-fitted into the through hole 66 of the anti-vibration rubber 54, and is formed of a synthetic resin or a metal material in a tubular shape.

Further, the collar 56 integrally includes a flange portion 72 for preventing slip-out, which protrudes in the outer peripheral direction on one end side (right side in FIG. 1), and the flange portion 72 is a recess for engaging the anti-vibration rubber 54. It is adapted to be engaged in 70. Further, with the flange portion 72 engaged with the engagement recess 70, the other end 92 (the left end in FIG. 1) is set to a length that reaches the bottom surface position of the rotation stopping recess 68. It should be noted that it is set so that a slight gap may be created between the flange portion 72 and the right end surface of the anti-vibration rubber 54 in FIG. 1 in the press-fitted state.

Further, the inner diameter of the through hole 74 of the collar 56 is set to be slightly larger than the outer diameter of the screw portion 86 of the bolt 58.

The bolt 58, into which the knurl 84 of the bolt 58 is press-fitted into the through hole 74 of the collar 56, includes a head portion 76 and a shaft portion 80.

The head portion 76 is engaged with the anti-rotation recess 68 formed on one end side of the anti-vibration rubber 54. The rotation of the bolt 58 can be prevented by engagement with the detent recess 68 when a rotational force is applied to the bolt 80.

The tip of the shaft portion 80 protrudes from the end portion of the anti-vibration rubber 54, and the nut 82 can be screwed into the protruding end portion, in a state where the head portion 76 is engaged in the rotation preventing recess 68. It is set to such a length. Further, the shaft portion 80 has a knurled portion 84 formed on the outer peripheral surface on the head portion 76 side. I'm supposed to get it. Further, a screw portion 86 is formed on the tip side of the position where the knurl 84 is formed.

Next, the formation state of this motor mounting floating structure will be described.

First, the anti-vibration rubber 54 is press-fitted into the attachment hole 62 formed in the attachment portion 52 of the motor housing 51, so that the concave portion 60 formed on the outer periphery of the anti-vibration rubber 54 protrudes from the attachment hole 62. It will be in a state where it is engaged with 64 and prevented from falling off.

Next, the collar 56 is press-fitted into the through hole 66 of the anti-vibration rubber 54 from the end of the anti-vibration rubber 54 on the engagement recess 70 side. In this case, when the collar 56 is press-fitted into the through hole 66 of the anti-vibration rubber 54, the flange portion 70 formed integrally with the collar 56 is engaged in the engaging recess 70 of the anti-vibration rubber 54, and a sufficient contact surface is formed. It acts as a holding seat, which improves stability during mounting.

Then, the bolt 58 is press-fitted into the through hole 74 of the collar 56 from the end of the anti-rotation recess 68 of the rubber vibration isolator 54. In this case, the knurling 84 formed on the shaft portion 80 of the bolt 58 bites and closely contacts the inner wall surface of the collar 56 so that the collar 56 and the bolt 58 are integrated and the bolt 58 is prevented from falling off. I have to. Further, when the bolt 58 is completely pressed in, the head 76 of the bolt 58 engages with the anti-rotation recess 68 of the anti-vibration rubber 54, and the bolt 58 and the anti-vibration rubber 54 are integrated. The rotation of the bolt 58 is prevented. Further, the press-fitting of the bolt 58 causes the flange portion 72 of the collar 56 and the head portion 76 of the bolt 58 to sandwich the antivibration rubber 54 from both sides, so that the bolt 58 and the collar 56 can be prevented from falling off. Is becoming

In this way, the mounting portion 52 of the motor housing 51 and the bolt 58 are completely isolated from each other through the vibration isolating rubber 54, and the head 76 of the bolt 58 and the vibration isolating rubber 54 are prevented from rotating. Since the bolt 58 is prevented from rotating by engaging with the recess 68, it is possible to reliably prevent the rotation of the bolt 58 while sufficiently suppressing the vibration transmission of the motor 50. ing.

Next, the state of mounting the motor 50 on the vehicle body side of the automobile using such a motor mounting floating structure will be described. From the through hole 66 of the vibration isolating rubber 54 press-fitted into the mounting portion 52 of the motor housing 51, The tip side screw portion 86 of the projecting bolt 58 is passed through a mounting hole 90 formed in a member 88 on the vehicle body side, a nut 82 is screwed into the projecting screw portion 86 from the mounting hole 90, and tightened securely. It will be mounted and fixed. When the nut 82 is tightened, the vibration-proof rubber 54 on the outer circumference of the taper portion 71 is compressed, so that stable attachment is achieved. Further, in this case, even if the nut 82 is tightened too much, it is stopped at the position of the flange portion 72 of the collar 56, and the vibration proof rubber 54 is prevented from being crushed. Further, even if a force that presses the bolt 58 is generated at the time of fastening and fixing or during transportation, the collar 56 having the flange portion 72 prevents the bolt 58 from falling off.

FIG. 3 shows another embodiment of the present invention.

In this embodiment, the engaging recess 70 of the vibration isolating rubber 54 is formed at the position of the end face of the vibration isolating rubber 54, and is provided between the head side end 92 of the collar 51 and the head 76 of the bolt 58. A gap 60 is formed between the anti-vibration rubber 54 and the outer periphery of the anti-vibration rubber 54 so that it is slightly larger than the width of the convex part 64 formed in the attachment hole 62 of the attachment part 52. It is compressed and deformed so that stable attachment can be achieved.

Since other configurations and operations are the same as those in the above-described embodiment, common parts are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 4 shows still another embodiment of the present invention.

In this embodiment, the taper portion 71 formed on the outer periphery of the engagement recess 70 of the vibration isolating rubber 54 in the state of FIG. 1 is removed, and the tape is straightened from the outer periphery of the engagement recess 70 to the end face position of the vibration isolating rubber 54. With the recessed part formed in the nut, the compression can be done with a simple structure when tightening the nut.

Since other configurations and operations are similar to those of the first embodiment, common parts are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 5 shows still another embodiment of the present invention.

In this embodiment, a gap is formed between the end portion 92 of the collar 56 on the bolt 58 head portion 76 and the head portion 76 of the bolt 58 from the state of FIG. The mounting hole 62 is formed to be slightly larger than the convex portion 64 so that the vibration-proof rubber 54 can be deformed and compressed when the nut is tightened.

Since other configurations and operations are the same as those in the above-mentioned respective embodiments, common parts are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 6 shows still another embodiment of the present invention.

In this embodiment, the engaging recess 70 of the vibration isolating rubber 54 is formed so as to be aligned with the end face position of the vibration isolating rubber 54, and the end of the collar 56 on the bolt head 76 side is the head of the bolt 58. The anti-vibration rubber 54 is not compressed and deformed when the nut is tightened by abutting against the portion 76.

Other configurations and operations are the same as those in the above-described respective embodiments, and common portions are denoted by the same reference numerals and description thereof will be omitted.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the present invention.

For example, the head shape of the bolt is not limited to a quadrangle, but may be various shapes as long as it is a square shape.

Further, the shape of the vibration-proof rubber allows the vibration-proof rubber to be divided into two parts or the like in order to improve the assembling property.

[0057]

[Effect of the device]

 As described above, in the motor mounting floating structure according to the first aspect, the vibration-proof elastic member is press-fitted into the mounting portion of the motor housing, the color is press-fitted into the elastic member, and the collar Since it is decided to press-fit the bolts into the bolts, there is an effect that it is possible to perform reliable fixing at low cost without performing costly baking.

Further, the bolt and the mounting portion of the motor housing are completely isolated from each other by the elastic member, and the angular head of the bolt and the elastic member are engaged with each other to prevent the bolt from rotating. Since it is stopped, there is an effect that the rotation of the bolt can be stopped while the vibration transmission of the motor housing from the bolt is reliably suppressed.

Furthermore, since it is not necessary to use the rotation stopping plate as in the conventional case, there is an effect that the number of parts can be reduced.

Further, in the motor mounting floating structure according to claim 2, the elastic member can be sandwiched and held by the flange portion of the collar and the head portion of the bolt, and the bolt and the color are prevented from falling off. Moreover, there is an effect that the seat surface can be enlarged by the flange portion and the stability at the time of mounting can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view taken along the line of FIG. 2 showing a motor mounting floating structure according to an embodiment of the present invention.

FIG. 2 is an overall plan view of a motor using the motor mounting floating structure of the present embodiment.

FIG. 3 is a cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a cross-sectional view showing another embodiment of the present invention.

FIG. 5 is a sectional view showing still another embodiment of the present invention.

FIG. 6 is a sectional view showing still another embodiment of the present invention.

FIG. 7A is a front view showing a conventional motor mounting floating structure, and FIG. 7B is a sectional view taken along the line EE in FIG. 7A.

FIG. 8A is a front view showing another conventional motor mounting floating structure, and FIG. 8B is a cross-sectional view taken along the line Loro of FIG.

[Explanation of symbols]

 50 Motor 51 Motor Housing 52 Mounting Part 54 Anti-Vibration Rubber 56 Collar 58 Bolt 68 Bolt Detent 70 Engagement Depression 72 Flange Part 76 Bolt Head 84 Knurl 86 Screw Part 88 Body Side Member

Claims (2)

[Scope of utility model registration request] 1. In a motor mounting floating structure for mounting a motor on a vehicle body side with an elastic member interposed, a tubular elastic member for press-fitting into a mounting portion of a motor housing for suppressing vibration transmission of the motor, A tubular collar press-fitted into the elastic member, and a vehicle body side mounting bolt press-fitted into the collar that has a square head that engages with the elastic member and forms a detent. A motor mounting floating structure characterized by being provided. 2. The motor mounting floating structure according to claim 1, wherein the collar includes a retaining flange that engages with the elastic member at a position opposite to a head of the bolt.