JP3892155B2 - Anti-vibration mount mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anti-vibration mount used for screwing a bracket to which a motor is fixed to a vehicle body panel, and an anti-vibration mount mounting structure.
[0002]
[Prior art]
The anti-vibration mount used for screwing the bracket to which the motor is fixed to the vehicle body panel and the mounting structure of the anti-vibration mount include a bush that is inserted into the central part of the rubber-type, single-piece anti-vibration mount. It is known that a hole is formed and a bracket insertion groove that is cut out in a disk shape toward the bush hole is formed on the outer side of the vibration-proof mount. In this anti-vibration mount, the bracket insertion groove is fitted into a round hole formed in the bracket smaller than the outer diameter dimension of the anti-vibration mount, the bush is inserted into the bush hole, and the screw inserted through the bush Is screwed to the body panel.
[0003]
[Problems to be solved by the invention]
However, in the above-described anti-vibration mount and the anti-vibration mount mounting structure, when the bracket insertion groove is fitted into the round hole of the bracket, the bracket's round hole is smaller than the outer diameter of the anti-vibration bracket. There is a problem that workability is remarkably poor because it is difficult to fit the vibration-proof mount into the bracket.
[0004]
In addition, in the above anti-vibration mount and anti-vibration mount mounting structure, when a load along the surface is applied to the bracket, it receives a concentrated load from the edge of the round hole of the bracket or is distorted by the resultant force with the surface direct load As a result, the vibration-proof mount as a whole is elastically deformed and the elastic deformation is repeatedly performed, resulting in a decrease in durability. There was a problem that it was difficult to secure the mounting rigidity.
[0005]
OBJECT OF THE INVENTION
The anti-vibration mount and the anti-vibration mount mounting structure according to the present invention can improve workability by being assembled very easily, prevent deterioration in durability, and ensure mounting rigidity to the vehicle body panel. An object of the present invention is to provide an anti-vibration mount and a mounting structure for the anti-vibration mount.
[0006]
[Structure of the invention]
[0007]
[Means for Solving the Problems]
In the vibration-proof mount mounting structure according to the first aspect of the present invention, a motor is fixed, a body panel fixing portion is formed, a bracket having a cylindrical support portion formed on the body panel fixing portion, and a body panel fixing screw. A bush having a pipe through which the pipe is inserted, a bush having a flange that comes into contact with the vehicle body panel, a first bush insertion hole through which the bush pipe is inserted, and a cylindrical support portion of the bracket are formed. A bracket insertion portion having a cylindrical groove shape capable of being inserted and held, and is formed independently of the first vibration isolation mount by rubber and a first vibration isolation mount disposed on the upper surface of the bracket, A second bushing insertion hole is formed through which the pipe of the bushing is inserted, and a second vibration isolating mount is disposed on the lower surface of the bracket, and the first cylindrical support portion is provided on the upper surface of the bracket. While the bracket insertion portion of the vibration isolating mount is fitted and held, the bush pipe is inserted into the second bush insertion hole of the second vibration isolating mount on the lower surface of the bracket, and the arm portion of the second vibration isolating mount is accommodated. The bush flange is accommodated, the bush pipe is inserted into the first bush insertion hole of the first anti-vibration mount, the body panel fixing screw is inserted into the bush pipe, and the body panel fixing screw is inserted into the body panel. It is characterized by being configured to be screwed into.
[0008]
In the anti-vibration mount mounting structure according to claim 2 of the present invention, the first anti-vibration mount has a bracket abutting portion that abuts on the upper surface of the bracket and is disposed within the cylindrical support portion of the bracket. The second anti-vibration mount is characterized in that a top portion is formed in contact with the bottom surface of the bracket and the bottom portion of the first anti-vibration mount.
[0009]
[Effects of the Invention]
In the anti-vibration mount mounting structure according to the first and second aspects of the present invention, the first anti-vibration mount is disposed on the upper surface of the bracket, and the second anti-vibration mount is separated from the first anti-vibration mount. Is disposed on the lower surface of the bracket. The first anti-vibration mount is held by the bracket by inserting the bracket insertion portion having a cylindrical groove shape into the cylindrical support portion of the bracket. The second vibration isolating mount is configured such that a pipe is inserted into the second bush insertion hole, and the bush pipe is inserted into the first bush insertion hole of the first anti-vibration mount from the lower surface of the bracket. The anti-vibration mount and the second anti-vibration mount are respectively held across the bracket. Then, the vehicle body panel fixing screw is inserted into the bush pipe, and the vehicle body panel fixing screw is screwed into the vehicle body panel. Therefore, when the first and second mounts are held by the bracket without being inserted into the bracket's round hole while deforming the anti-vibration mount as in the conventional case, when a load along the surface is applied to the bracket In addition, since the load is received through the cylindrical support portion of the bracket, the elastic deformation is not greatly caused, and the elastic deformation is not increased, so that the mounting rigidity to the vehicle body panel is ensured.
[0010]
【Example】
1 to 5 show an embodiment of an anti-vibration mount and an anti-vibration mount mounting structure according to the present invention.
[0011]
The illustrated anti-vibration mount 1 includes a first anti-vibration mount 2, a second anti-vibration mount 3, and a bush 4.
[0012]
The anti-vibration mount 1 is used to fix a bracket 7 to which a motor 6 is fixed to a vehicle body panel 8 using a vehicle body panel fixing screw 5. As shown in FIGS. 3, 4, and 5, the motor 6 includes an output shaft 6 a that is rotated by energization. The output shaft 6 a has a base of a motor arm 9 that constitutes a part of the wiper link. The end is screwed with a nut 10. A ball pin 11 is fixed to the tip of the motor arm 9. The anti-vibration mounts 1 are attached to the bracket 7 at four locations. Since the anti-vibration mounts 1 have the same structure, only one anti-vibration mount 1 is used in the description.
[0013]
The first anti-vibration mount 2 is molded from rubber, and the first anti-vibration mount 2 is provided with a first cylindrical anti-vibration mount main body 2a. The first vibration-proof mount body 2a has a height dimension L1. A first bush insertion hole 2d having a round hole penetrating from the top part 2b to the bottom part 2c is formed at a substantially central part of the first vibration-proof mount body 2a. The first bush insertion hole 2d has an inner diameter D1. As shown in FIG. 2, the inner diameter D1 of the first bush insertion hole 2d is slightly smaller than the outer diameter D2 of the pipe 4a provided in the bush 4, so that the pipe 4a of the bush 4 is inserted. As a result, the pipe 4a of the bush 4 is held.
[0014]
A bracket fitting portion 2e is formed on the outer side of the first bush insertion hole 2d on the bottom portion 2c of the first vibration isolation mount main body 2a. The bracket insertion portion 2e is formed in a cylindrical groove shape from the bottom portion 2c toward the top portion 2b, and has a height L2 from the bottom portion 2c.
[0015]
The bracket insertion portion 2e is a cylindrical support that is formed in a cylindrical shape protruding on the upper surface 7a2 of the bracket body 7a at the vehicle body panel fixing portion 7b disposed at four locations on the outer side of the bracket body 7a provided in the bracket 7. It is inserted into the part 7c. The bracket insertion portion 2e has an inner diameter D4 that is slightly larger than the outer diameter D3 of the cylindrical support portion 7c of the bracket 7, and an outer diameter that is slightly larger than the inner diameter D5 of the cylindrical support portion 7c of the bracket 7. It has D6. The height dimension L2 of the bracket insertion portion 2e is slightly larger than the height dimension L3 of the cylindrical support portion 7c of the bracket 7. The cylindrical support portion 7c of the bracket 7 is easily formed by press molding in the same manner as forming a round hole.
[0016]
On the outside of the bracket insertion portion 2e, a bracket abutting portion 2f is formed with a dimension slightly larger than the plate thickness dimension t1 of the bracket 7 and arranged away from the bottom portion 2c. The bracket abutting portion 2 f abuts on the upper surface 7 a 2 of the bracket body 7 a of the bracket 7.
[0017]
As shown in FIG. 2, the first vibration isolation mount 2 is disposed above the vehicle body panel fixing portion 7 b of the bracket 7, and then the bracket insertion portion 2 e is fitted into the cylindrical support portion 7 c of the bracket 7. . At this time, the bracket insertion portion 2e has an inner diameter D4 that is slightly larger than an outer diameter D3 of the cylindrical support portion 7c of the bracket 7 and an outer diameter D6 of the inner diameter D5 of the cylindrical support portion 7c of the bracket 7. Since the height dimension L2 is slightly larger than the height dimension L3 of the cylindrical support portion 7c of the bracket 7, it can be fitted to the cylindrical support portion 7c from above the bracket 7 with one touch. In the first anti-vibration mount 2, when the bracket insertion portion 2e is inserted into the cylindrical support portion 7c of the bracket 7, the bracket contact portion 2f contacts the upper surface 7a2 of the bracket 7 and the bottom portion 2c is the cylindrical support portion. It arrange | positions in 7c and is arrange | positioned on the same surface as the lower surface 7a1 of the bracket 7. FIG. The first anti-vibration mount 2 is held on the upper surface 7a2 of the bracket 7 without falling off the bracket 7 only by fitting the bracket insertion portion 2e into the cylindrical support portion 7c of the bracket 7 with one touch.
[0018]
On the other hand, the second anti-vibration mount 3 is molded independently of the first anti-vibration mount 2 using rubber as a raw material, and the second anti-vibration mount 3 has a substantially cylindrical second shape. An anti-vibration mount body 3a is provided. The second vibration-proof mount body 3a has a height dimension L4. A second bush insertion hole 3d that is a round hole penetrating from the top 3b to the bottom 3c is formed at substantially the center of the second vibration-proof mount body 3a. The second bush insertion hole 3d has the same inner diameter D7 as the first bush insertion hole 2d of the first vibration isolation mount 2. Since the inner diameter D7 of the second bush insertion hole 3d is slightly smaller than the outer diameter D2 of the pipe 4a provided in the bush 4, the pipe 4a of the bush 4 is inserted by inserting the pipe 4a of the bush 4. Hold.
[0019]
At the center of the bottom 3c of the second anti-vibration mount body 3a, a heel housing 3e is formed. The rod housing portion 3e has a height dimension L5 along the hole direction of the second bush insertion hole 3d and has an inner diameter dimension D8. In the rod housing portion 3e, the rod 4b provided in the bush 4 is stored. As shown in FIG. 3, the outer peripheral portion of the heel housing portion 3 e of the bottom portion 3 c has a step shape in which the height is alternately changed along the circumferential direction.
[0020]
The bush 4 is provided with a cylindrical pipe 4a and a flange 4b projecting in a disk shape in the radial direction of the pipe 4a at the lower end of the pipe 4a. A body panel fixing screw 5 is inserted inside the pipe 4a.
[0021]
The vehicle body panel fixing screw 5 is a bolt integrally having a washer 5 a, and the male screw 5 b is inserted into the pipe 4 a of the bush 4 and screwed into a bracket mounting screw hole 8 a formed in the vehicle body panel 8.
[0022]
The length of the second bushing insertion hole 3d of the second vibration isolation mount 3 is the same as the height dimension L4 of the second vibration isolation mount body 3a, and the first bush insertion of the first vibration isolation mount 2 is performed. The length of the hole 2d is the same as the height dimension L1 of the first anti-vibration mount main body 2a, and the sum of the lengths (L4 + L1) is slightly larger than the height dimension L6 of the bush 4.
[0023]
In the second anti-vibration mount 3, the bush 4 with the pipe 4a first is inserted into the second bush insertion hole 3d from the bottom 3c, and the flange 4b of the bush 4 is accommodated in the flange accommodating portion 3e. At this time, since the inner diameter D7 of the second bush insertion hole 3d is slightly smaller than the outer diameter D2 of the pipe 4a provided in the bush 4, the pipe 4a of the bush 4 is fitted into the second bush insertion hole 3d. Thus, the pipe 4a of the bush 4 is held by the second bush insertion hole 3d. The pipe 4 a of the bush 4 is disposed so as to protrude on the top portion 3 b of the second vibration isolation mount 3.
[0024]
As shown in FIG. 2, the second vibration-proof mount 3 is held by the bush 4 by housing the collar 4 b of the bush 4 in the collar housing part 3 e and projecting the pipe 4 a of the bush 4 from the top part 3 b. The The second vibration isolation mount 3 is disposed below the bracket 7, and the pipe 4 a of the bush 4 is inserted into the first bush insertion hole 2 d of the first vibration isolation mount 2 from the bottom 2 c. At this time, the first bush insertion hole 2d of the first vibration isolation mount 2 has an inner diameter dimension D1 slightly smaller than an outer diameter dimension D2 of the pipe 4a of the bush 4, so that the top of the second vibration isolation mount 3 is The pipe 4a of the bush 4 is fitted into the first bush insertion hole 2d until the portion 3b comes into contact with the lower surface 7a1 of the bracket 7 and the bottom 2c of the first vibration isolation mount 2, whereby the first vibration isolation mount 2 is inserted. The pipe 4a of the bush 4 is held by the first bush insertion hole 2d.
[0025]
When the top 3b of the second vibration isolating mount 3 comes into contact with the lower surface 7a1 of the bracket 7 and the bottom 2c of the first vibration isolating mount 2, the tip of the pipe 4a of the bush 4 is the first vibration isolating mount 2. It arrange | positions in the position slightly lower than the top part 2b.
[0026]
By inserting the pipe 4 a of the bush 4 into the first bush insertion hole 2 d of the first vibration isolation mount 2, the first vibration isolation mount 2 held by the cylindrical support portion 7 c of the bracket 7 is attached to the bracket 7. The second anti-vibration mount 3 in which the pipe 4 a of the bush 4 is inserted and held in the first bush insertion hole 2 d of the first anti-vibration mount 2 is disposed on the lower surface 7 a 1 of the bracket 7. The first anti-vibration mount 2 and the second anti-vibration mount 3 are held by the vehicle body panel fixing portion 7b with the bracket 7 interposed therebetween via the bush 4. At this time, the first anti-vibration mount 2 and the second anti-vibration mount 3 are not easily fitted into the round hole of the bracket, unlike the conventional one, and the bracket 7 can be made very simply. The attachment to is performed.
[0027]
The pipe 4a of the bush 4 inserted into the second bush insertion hole 3d of the second vibration isolation mount 3 and the second bush insertion hole 2d of the first vibration isolation mount 2 is attached to the bracket of the vehicle body panel 8. The vehicle body panel fixing screw 5 is inserted from the distal end portion of the pipe 4a when it is aligned with the screw hole 8a, and the male screw 5b of the vehicle body panel fixing screw 5 is screwed into the bracket mounting screw hole 8a. The vehicle body panel fixing screw 5 is screwed in until the washer 5a collides with the tip of the pipe 4a of the bush 4, so that the bottom 3c of the second vibration-proof mount 3 and the flange 4b of the bush 4 contact the vehicle body panel 8, respectively. In contact therewith, the first and second vibration-proof mounts 2 and 3 are crushed by the washer 5a of the body panel fixing screw 5 respectively. Therefore, the first and second anti-vibration mounts 2 and 3 are attached between the vehicle body panel 8 and the bracket 7 in a state where an elastic repulsion force is accumulated by elastic deformation.
[0028]
In such an anti-vibration mount and the anti-vibration mount mounting structure, as described above, the cylindrical support portion 7c of the bracket 7 is formed in a cylindrical shape and protrudes from the bracket main body 7a. When a load along the surface is applied to 7a, the load is received by the surface of the cylindrical support portion 7c and the surface of the bracket insertion portion 2e of the first vibration isolating mount 2. The surface pressure applied to the vibration mount 2 is reduced, and as a result, the first vibration isolation mount 2 is not elastically deformed greatly. Of course, since the second anti-vibration mount 3 is formed independently of the first anti-vibration mount 2, the load is not directly transmitted and the second anti-vibration mount 3 is not greatly elastically deformed. Since neither the first anti-vibration mount 2 nor the second anti-vibration mount 3 is greatly elastically deformed, the bracket 7 does not become unstable with respect to the vehicle body panel 8, so that the attachment to the vehicle body panel 8 can be performed. In addition to being strengthened, the anti-vibration effect can be enhanced by reducing the elastic rigidity of the first and second anti-vibration mounts 2 and 3.
[0029]
【The invention's effect】
As described above, according to the vibration-proof mount mounting structure according to claims 1 and 2 of the present invention, the first vibration-proof mount is disposed on the upper surface of the bracket, and the second vibration-proof mount is the first. Separated from the anti-vibration mount, it is arranged on the lower surface of the bracket. The first anti-vibration mount is held by the bracket by inserting the bracket insertion portion having a cylindrical groove shape into the cylindrical support portion of the bracket. The second vibration isolating mount is held by the bush when the pipe is inserted into the second bush insertion hole and the eaves are accommodated in the eaves accommodating portion, and the bush pipe is connected to the first anti-vibration from the lower surface of the bracket. By being inserted into the first bush insertion hole of the mount, the first vibration isolation mount and the second vibration isolation mount are respectively held across the bracket. Then, the vehicle body panel fixing screw is inserted into the bush pipe, and the vehicle body panel fixing screw is screwed into the vehicle body panel. Therefore, when the anti-vibration mount is deformed and the first and second mounts are held by the bracket without being deformed and the load along the surface is applied to the bracket. In addition, since the load is received through the cylindrical support portion of the bracket, the elastic deformation is not greatly caused, and the elastic deformation is not increased, so that the mounting rigidity is ensured. Therefore, it is possible to improve the workability by being assembled very easily, and it is possible to prevent the deterioration of the durability and to secure the mounting rigidity with respect to the vehicle body panel.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of an embodiment of an anti-vibration mount and an anti-vibration mount mounting structure according to the present invention.
FIG. 2 is an external perspective view for explaining an assembling relationship of components of the vibration-proof mount and the vibration-proof mount mounting structure shown in FIG. 1;
FIG. 3 is a front view of the vibration-proof mount and the vibration-proof mount mounting structure shown in FIG. 1 when attached to a bracket.
4 is a bottom view of the bracket shown in FIG. 3. FIG.
5 is a left side view of the bracket shown in FIG. 3. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Anti-vibration mount 2 1st anti-vibration mount 2c Bottom part 2d 1st bush insertion hole 2e Bracket insertion part 2f Bracket contact part 3 2nd anti-vibration mount 3b Top part 3d 2nd bush insertion hole 3e 鍔 accommodating part 4 Bush 4a Pipe 4b 鍔 5 Car body panel fixing screw 6 Motor 7 Bracket 7a1 Lower surface 7a2 Upper surface 7b Car body panel fixing part 7c Cylindrical support part 8 Car body panel

Claims (2)

A motor is fixed, a vehicle body panel fixing portion is formed, a bracket having a cylindrical support portion formed in the vehicle body panel fixing portion, a pipe through which a vehicle body panel fixing screw is inserted, and a flange that comes into contact with the vehicle body panel. A bracket having a cylindrical groove shape, which is formed of rubber and has a first bush insertion hole through which the pipe of the bush is inserted, and which can fit and hold the cylindrical support portion of the bracket. fitting portion is formed, a first vibration damping mount that is arranged on the upper surface of the bracket, and the first vibration damping mount a rubber molded independently, the second the pipe of the bush is inserted Bush insertion hole is formed, a second vibration damping mount that is arranged on the lower surface of the bracket, the upper surface of the bracket, the first vibration damping mount in the tubular support portion Bed While it is fitting holding the socket fitting portion, the lower surface of the bracket, inserting the second bushing insertion hole of the bush pipe of the second vibration damping mount, the pipe of the bush of the first vibration damping mount is inserted through the first bushing insertion hole, the body panel fixing screws inserted into the bushing of the pipe, the body panel fixing screws of vibration damping mount which is characterized in that it screwed to the vehicle body panel mounting structure . Above the first vibration damping mount, with bracket contact portion abuts is formed on the upper surface of the bracket, the bottom portion disposed cylindrical support portion of the bracket is formed, said second vibration isolation the mount, the mounting structure of the vibration damping mount according to claim 1, characterized in that top portions respectively abuts against the bottom portion of the lower surface and the first vibration damping mount of the bracket is formed.

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