JPH1038026A - Support structure of vibration body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a connection part for connecting a vibration damping member with a vibration body or support member as much as possible by providing a shape for mutually and directory connecting at least one side of the vibration body or support member with the vibration damping member. SOLUTION: For example, in an electric vehicle, a motor 7 and transaxle 8 are vibrated around an inertia main shaft by the drive of the motor 7 and this vibration is damper by mounts 9, 10, 11 and the vibration of a car body and a booming noise are restrained. In this case, it is not necessary to install a particular part for connecting both, as a rear cross member 5 is penetrated in an insulator. The distance between the rear cross member 5 and the transaxle 8 can be set as short as possible. Accordingly, a space without parts is ensured in front of the car body and a load added to the front part of the car body can be absorbed by the plastic deformation of the car body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibrating body support structure for supporting a vibrating body arranged in a prime mover installation area of a vehicle.

[0002]

2. Description of the Related Art In general, a prime mover as a vibrator disposed in a prime mover installation area of a vehicle is supported by a support member provided on a vehicle body side. Further, a vibration damping member is disposed at a connection point between the prime mover and the support member. When the prime mover vibrates while rolling around the inertia main shaft due to a change in torque, the vibration is absorbed by the vibration damping member, and the vibration and muffled sound of the vehicle body are suppressed, so that the riding comfort is favorably maintained.

On the other hand, since the vibration characteristics of the prime mover change depending on the number of revolutions, vibration transmitted from the road surface through the vehicle body, and longitudinal acceleration, the position and shape of the vibration damping member or the selection of the spring constant are changed. It is desirable that the vibration damping device be configured to obtain a vibration damping characteristic according to the situation.

[0004] An example of an engine suspension device for suppressing such vibration of the prime mover is described in Japanese Patent Application Laid-Open No. Hei 3-182837. In the engine suspension described in this publication, a power plant including an engine and a transmission is placed horizontally. And
Engine mounts are attached to the front, rear, left and right of the power plant, and this engine mount is attached to the body.

The engine mount includes a first bracket attached to the power plant, a connecting pin connected to the first bracket, a bolt fixed to the connecting pin, a second bracket attached to the body, and a second bracket.
An outer cylinder fixed to the bracket, an elastic body integrated with the outer cylinder, and a bolt for connecting the elastic body and the connecting pin are provided. The bolt is inserted into the hole of the elastic body to support the engine, and the vibration of the engine is absorbed by the elastic body.

[0006]

In recent years, there has been an increasing demand for reducing the number of parts of a vehicle as much as possible in consideration of reduction of manufacturing cost and improvement of fuel efficiency. However, the engine suspension described in the above publication discloses a first bracket, a second bracket, a connecting pin, and a connecting member for connecting the elastic body to the power plant and the body.
Since connecting parts such as bolts are used, the number of parts and the number of assembling steps are increased as much as possible, resulting in an increase in manufacturing costs. In addition, there has been a problem that the vehicle weight increases, fuel efficiency decreases, and the structure becomes complicated, and the layout of parts is restricted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a vibration body support structure capable of reducing the number of connecting parts for connecting a vibration damping member to a vibration body or a support member as much as possible. It is an object.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a support member provided on a vehicle body for supporting a vibrating body in a prime mover installation area, the vibrating body and the supporting member, In a supporting structure of a vibrating body having a vibration damping member interposed at a connection point, at least one of the vibrating body or the supporting member and the vibration damping member have a shape for directly connecting members to each other. Are connected.

Here, as the vibrating body, besides the prime mover, a transmission alone connected to the output side of the prime mover, a transaxle combining a transmission and a final reduction gear, and the like can be exemplified. In addition, as a support member, a side member,
A cross member, a reinforce, and the like can be exemplified. Further, as the vibration damping member, an insulator formed of a rubber-like elastic body can be exemplified. Still further, as a configuration in which the members are directly coupled to each other, one member is penetrated by the other member, one member is sandwiched by the other member, one member is inserted into the other member, For example, one member and the other member may be screw-connected.

According to the present invention, at least one of the vibrating member or the supporting member and the vibration damping member are directly connected to each other by their mutual shapes. Therefore, it is not necessary to use a special connecting part for connecting the parts, and the number of parts is reduced as much as possible.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(First Embodiment) FIG. 1 is a schematic plan view showing an embodiment in which the present invention is applied to an electric vehicle, and FIG.
FIG. 2 is a conceptual side view of FIG. In the figure, reference numerals 1 denote side members provided on both sides of a front portion of a vehicle body, and a prime mover arrangement area A is formed between the side members 1 and over a space above the side members. The front cross member 2 is arranged in the prime mover arrangement area A, and both ends of the front cross member 2 are fixed to the side members 1 by bolts 3.

A bifurcated auxiliary member 4 is disposed behind the front cross member 2, and both ends of the auxiliary member 4 are connected to the side members 1. A rear cross member 5 is attached to the auxiliary member 4.
This rear cross member 5 corresponds to the support member of the present invention. Both ends of the rear cross member 5 are fixed to the auxiliary member 4 by bolts 6. As shown in FIG. 2, the fixed position of the front cross member 2 is set higher than the fixed position of the rear cross member 5.

A motor 7 is arranged in the prime mover arrangement area A, specifically, between the front cross member 2 and the rear cross member 5. This motor 7 corresponds to the prime mover of the present invention. On the output side of the motor 7, a transaxle 8 in which a transmission and a final reduction gear are integrated is disposed. The motor 7 and the transaxle 8 correspond to a vibrating body of the present invention.

That is, the inertia main shafts (not shown) of the motor 7 and the transaxle 8 are placed laterally with respect to the vehicle body. A front end of the motor 7 and a front end of the transaxle 8 are supported by the front cross member 2 by mounts 9 and 10. This mount 9,
Reference numeral 10 denotes a well-known device composed of a bracket, a bolt, a rubber-like elastic body, and the like.

On the other hand, a mount 11 is attached to the rear of the motor 8, and the mount 11 and the rear cross member 5 are connected. 3 is a perspective view of the mount 11 and the rear cross member 5, FIG. 4 is a front sectional view of the mount 11, and FIG.

The mount 11 includes a base 12 having a substantially trapezoidal shape, and an outer cylinder 13 fixed to the upper side of the base 12.
And The base 12 and the outer cylinder 13 are made of metal, and a bolt hole 14 is formed on the lower side of the base 12. A bolt (not shown) is inserted into the bolt hole 14, and the mount 11 is fastened and fixed to the motor 8 side by the bolt.

As shown in FIG. 4, an insulator 15 made of a rubber-like elastic material is provided on the inner periphery of the outer cylinder 13.
Are vulcanized and adhered. This insulator 15 corresponds to the vibration damping member of the present invention. Insulator 15
The dimension in the direction of the axis B is set to gradually increase toward the inner peripheral side. A metal inner cylinder 16 is arranged on the inner peripheral surface of the insulator 15. The insulator 15 is vulcanized and bonded to the inner cylinder 16, and the length of the inner cylinder 16 in the direction of the axis B is set longer than the length of the outer cylinder 13 in the direction of the axis B.

The rear cross member 5 is inserted into the inner cylinder 16. The rear cross member 5 has a pipe shape whose radial cross section is set to be substantially circular, and an annular first stopper 17 is formed on the outer peripheral surface thereof. The first stopper 17 is located on one side of the inner cylinder 16, and the inner diameter of the first stopper 17 is set smaller than the outer diameter of the inner cylinder 16.

An annular second stopper 18 is arranged on the other side of the inner cylinder 16. The first stopper 18 is an E-ring and is mounted in a mounting groove 19 formed on the outer periphery of the rear cross member 5. The outer diameter of the second stopper 18 is set larger than the inner diameter of the inner cylinder 16. Thus, the rear cross member 5 is penetrated by the insulator 15, and the mount 11 and the rear cross member 5 are integrated. Further, the first stopper 17 and the second stopper 18 prevent the relative movement between the mount 11 and the rear cross member 5 in the direction of the axis B.

Here, a process of connecting the insulator 15 and the rear cross member 5 will be described. First, a pipe of a predetermined length is prepared, and one end in the length direction of the pipe is pressurized to form a flat portion 20, and a bolt hole 2 is formed in the flat portion 20.
Form one. In addition, the first stopper 17 is attached from one end side of the pipe, and the first stopper 17 is joined to an intermediate portion in the length direction of the pipe.

Next, the end of the pipe opposite to the flat portion 20 is inserted into the inner cylinder 16 of the mount 11 and the mount 11 is brought into contact with the first stopper 17.
Further, the second stopper 18 is mounted in the mounting groove 19. Then, an end of the pipe opposite to the flat portion 20 is pressed to form a flat portion 22, and a bolt hole 23 is formed in the flat portion 22.

Thereafter, the mount 11 is fixed to the motor 7, and the motor 7 and the transaxle 8 are attached to the front cross member 2 by the mounts 9 and 10. Thus, the front cross member 2, the motor 7, the transaxle 8, the mount 11, and the rear cross member 5 are unitized.

In the vehicle manufacturing process, the unit is transported below the vehicle body, and the front cross member 2 is fixed to the side member 1 by bolts 3.
Further, the rear cross member 5 is fixed to the auxiliary member 4 by the bolt 6, and the mounting of the unit on the vehicle body is completed.

When the unit is mounted on the vehicle body, the center C of the main shaft of the motor 7, the center D of the output shaft of the transaxle 8, and the center of gravity E of the motor 7 and the transaxle 8, as shown in FIG. , 10 on a line segment F. Further, the inertia main shaft of the motor 7 and the rear cross member 5 are located substantially in parallel. Further, a control unit (not shown) for controlling each component of the electric vehicle is disposed above the front cross member 2.

According to the electric vehicle, the motor 7 and the transaxle 8 vibrate around the inertia main shaft by the driving of the motor 7, and the vibrations are generated by the mounts 9, 10, and 11.
Thus, vibration and muffled sound of the vehicle body are suppressed.
In this embodiment, since the rear cross member 5 is penetrated through the insulator 15, it is not necessary to provide a special component for connecting the two, and the number of components can be reduced as much as possible.

Therefore, the number of assembling steps can be reduced as much as possible, and the manufacturing cost can be suppressed. In addition, the vehicle can be made as lightweight as possible and the driving force required for running the vehicle can be suppressed. Further, the structure is simplified, and the degree of freedom of the component layout is increased.

In this embodiment, the insulator 1
5, the distance between the rear cross member 5 and the transaxle 8 can be set as short as possible. Therefore, it is possible to secure a space where no parts are present in the front part of the vehicle body and absorb the load applied to the front part of the vehicle body from the front of the vehicle by plastically deforming the vehicle body. Further, in this embodiment, since the center of gravity E is arranged on the line segment F connecting the mounts 9 and 10 and the mount 11, the vibration about the principal axis of inertia can be efficiently damped, and the vibration damping effect is further enhanced. improves.

A screw hole (not shown) is provided in the rear cross member 5 instead of the mounting groove 19, and a bolt (not shown) is prepared in place of the second stopper 18, and the bolt is screwed into the screw hole. It is also possible to prevent relative movement between the rear cross member 5 and the mount 11 by pulling in.

The inner diameter of the insulator 15 is set smaller than the outer diameter of the rear cross member 5, and
A configuration in which 6 is omitted may be adopted. In this case, the inner peripheral surface of the insulator 15 comes into close contact with the outer peripheral surface of the rear cross member 5 due to its elastic force, so that the relative movement between the rear cross member 5 and the mount 11 is restricted. Therefore,
It is not necessary to provide extra parts for preventing the relative movement between the rear cross member 5 and the mount 11, and the number of parts is further reduced.

(Second Embodiment) FIGS. 6 and 7 are side views showing a mount 24 according to another embodiment of the present invention. The mount 24 has an inner cylinder 25 bonded to the inner periphery of the insulator 15, and the inner cylinder 25 is constituted by a pair of pieces 26 divided in the circumferential direction. The pair of pieces 26 are formed in a symmetrical shape with metal, and have a semicircular side shape. The radius of the inner surface of the pair of pieces 26 is set to be substantially the same as the outer diameter of the rear cross member 5. The other configuration is the same as that of the first embodiment.

According to the mount 24, since the inner cylinder 25 is divided into two pieces 26, when the rear cross member 5 is inserted into the inner cylinder 25, a jig (not shown) as shown in FIG. (2) to move the pair of pieces 26 outward in the radial direction to enlarge the space between the pieces 26.

Then, after the rear cross member 5 is inserted into the space between the pieces 26, as shown in FIG. 6, if the circumferential ends of the pieces 26 are brought into contact with the elastic force of the insulator 15, the insertion work is performed. Is completed. That is, according to the mount 24, the pair of pieces 26 abut on the outer peripheral surface of the rear cross member 5 by the elastic force of the insulator 15, and the rear cross member 5 and the insulator 15
Are integrally connected.

Also in this embodiment, the insulator 1
Since the rear cross member 5 is made to penetrate through 5, the same effect as in the first embodiment can be obtained. Also, the mount 24
Since the inner cylinder 25 is divided into two, when the rear cross member 5 is penetrated into the mount 24, the pair of pieces 26 can be moved to expand the space, thereby improving workability.

Further, since the pair of pieces 26 can be moved in the radial direction, the rear cross member 5 can be moved to the pair of pieces 26 regardless of the processing accuracy of the outer diameter of the rear cross member 5 and the inner diameter of the pair of pieces 26. Can be held. Therefore, it is not required to maintain high processing accuracy, and the processing cost of the rear cross member 5 and the inner cylinder 25 can be suppressed. In the second embodiment, the inner cylinder 25 is divided into two in the circumferential direction. However, the inner cylinder 25 can be divided into three or more pieces.

(Third Embodiment) FIGS. 8 and 9 are side views showing a mount 27 according to another embodiment of the present invention. The inner cylinder 28 of the mount 27 has a pair of large arc portions 29 having an inner diameter substantially matching the outer diameter of the rear cross member 5, and a pair of small arc portions connecting both ends of the pair of large arc portions 29 in the circumferential direction. And an arc portion 30. The circumferential thickness of the pair of large arc portions 29 is set to be substantially uniform.

The inner diameter of the pair of small arc portions 30 is set smaller than the inner diameter of the pair of large arc portions 29, and the thickness of the pair of small arc portions 30 is larger than the thickness of the pair of large arc portions 29. It is set thin. That is, the pair of small arc portions 30
Are configured to be more easily elastically deformed than the pair of large arc portions 29. Other configurations are the same as in the first embodiment.

According to the third embodiment, the insulator 15
When the and the rear cross member 5 are integrally connected, as shown in FIG. 9, a pair of large arc portions 29 are elastically deformed in a direction away from each other by using a jig (not shown), and The pair of small arc portions 20 is elastically deformed in a direction approaching each other, and the space between the pair of large arc portions 29 is enlarged.

After the rear cross member 5 is inserted into the space between the pair of large arc portions 29 and the inner cylinder 28 is returned to the original shape as shown in FIG. 8, the elastic force of the insulator 15 is reduced. Of the rear cross member 5 and is transmitted to the large arc portion 29 of the
5 and the rear cross member 5 are connected.

Also in the third embodiment, the same effect as in the first embodiment can be obtained because the rear cross member 5 is penetrated through the insulator 15 to connect them. Further, since the space between the pair of large arc portions 29 can be enlarged by elastically deforming the inner cylinder 28 of the mount 27, workability when the rear cross member 5 is penetrated is improved. Further, since the pair of large arc portions 29 can move in the radial direction, the processing cost of the rear cross member 5 and the inner cylinder 28 can be suppressed as in the second embodiment.

When the inner diameter of the pair of large arc portions 29 is set smaller than the inner diameter of the rear cross member 5, the rear cross member 5 due to the elastic restoring force of the pair of large arc portions 29 is provided.
The fixing force is further improved.

Further, the radius or thickness of the pair of small arc portions 30 is arbitrarily changed to adjust the elastic force in the direction of bringing the pair of large arc portions 29 closer to each other.
The fixing force of the rear cross member 5 caused by the above can be set irrespective of the elastic force of the insulator 15.

Furthermore, since the inner cylinder 28 is integrally formed, it is possible to prevent the rear cross member 5 from biting into the insulator 15 when the vibration of the motor or the transaxle is transmitted to the mount 27.

(Fourth Embodiment) FIG. 10 is a side view showing a mount 31 according to another embodiment of the present invention. An insulator 32 formed in a ring shape by a rubber-like elastic body is vulcanized and bonded to the inner periphery of the outer cylinder 13 of the mount 31.
This insulator 32 corresponds to the vibration damping member of the present invention. On the inner peripheral surface of the insulator 32, a pair of pieces 33 formed by forming a metal into an arc shape are arranged to face each other. The pair of pieces 33 are curved outward, and the inner diameter is set to be larger than the outer diameter of the rear cross member 5.

The insulator 32 has a U-shaped notch 34 formed at a position corresponding to a position between both ends of a pair of pieces 33 in the circumferential direction. Other configurations are the same as in the first embodiment.

When the rear cross member 5 is made to penetrate the insulator 32, the pair of pieces 33 is moved radially outward by a jig (not shown) to widen the space between the pair of pieces 33. Then, after inserting the rear cross member 5 into the space between the pair of pieces 33, the pair of pieces 33 is brought into contact with the rear cross member 5 by the elastic force of the insulator 32, and the insulator 32 and the rear cross member 5 are integrated. Is done.

Also in the fourth embodiment, the insulator 3
Since the two are connected to each other through the rear cross member 5, the same effect as in the first embodiment can be obtained. Also,
Since the space can be expanded by moving the pair of pieces 33 in the radial direction, the workability when the rear cross member 5 is penetrated is improved.

Further, in the fourth embodiment, a pair of pieces 33
Is set to be larger than the inner diameter of the rear cross member 5 and the notch 34 is formed, so that a jig can be easily inserted into or removed from the space between the pair of pieces 33 and penetrate the rear cross member 5. The workability to perform is further improved.

(Fifth Embodiment) FIG. 11 is a side view showing a mount 35 according to another embodiment of the present invention. An insulator 36 formed in a ring shape by a rubber-like elastic material is vulcanized and bonded to the inner periphery of the outer cylinder 13 of the mount 35.
This insulator 36 corresponds to the vibration damping member of the present invention. On the inner peripheral surface of the insulator 36, a pair of pieces 37 formed by forming a metal into an arc shape are arranged to face each other. The pair of pieces 37 are curved outward and the inner diameter is set smaller than the outer diameter of the rear cross member 5.

In the insulator 36, a U-shaped notch 38 is formed at a position corresponding to a position between both ends of the pair of pieces 37 in the circumferential direction. Other configurations are the same as in the first embodiment.

When connecting the insulator 36 and the rear cross member 5, the pair of pieces 37 are moved radially outward by a jig (not shown) to widen the space between the pair of pieces 37. After the rear cross member 5 is inserted into the space between the pair of pieces 37, the circumferential ends of the pair of pieces 37 are brought into contact with the rear cross member 5 and fixed by the elastic force of the insulator 36. In other words, the rear cross member 5 is
Fixed at a point.

Also in the fifth embodiment, the insulator 3
The same effect as in the first embodiment can be obtained because the rear cross member 5 is penetrated through 6 and the two are integrated. Further, since the space can be expanded by moving the pair of pieces 37 in the radial direction, the penetrating workability is improved. Further, since the inner diameter of the pair of pieces 37 is set smaller than the inner diameter of the rear cross member 5 and the notch 34 is formed, it is easy to insert or remove the jig into the space, and the piercing workability is further improved. .

(Sixth Embodiment) FIG. 12 is a side view showing a mount 39 according to another embodiment of the present invention. In the mount 39, an insulator 40 formed in a ring shape by a rubber-like elastic body is vulcanized and bonded to the inner periphery of the outer cylinder 13. This insulator 40 corresponds to the vibration damping member of the present invention. The inner cylinder 41 disposed on the inner periphery of the insulator 40 has a pair of large arc portions 42 having an inner diameter larger than the outer diameter of the rear cross member 5 and a pair of large arc portions 4.
A pair of small arc portions 43 connecting both ends of the two in the circumferential direction
And The circumferential thickness of the pair of large arc portions 42 is set to be substantially uniform.

The inner diameter of the pair of small arc portions 43 is set smaller than the outer diameter of the rear cross member 5, and the thickness of the pair of small arc portions 43 is set smaller than the thickness of the pair of large arc portions 42. Have been. That is, the pair of small arc portions 43 is configured to be more easily elastically deformed than the pair of large arc portions 42.
Other configurations are the same as in the first embodiment.

To connect the rear cross member 5 and the insulator 40 in this embodiment, a pair of large arc portions 42 are moved outward in the radial direction using a jig (not shown), and The pair of small arc portions 42 are elastically deformed radially inward each other, and the space between the pair of large arc portions 42 is enlarged.

After the rear cross member 5 is inserted into the space between the pair of large arc portions 42 and the inner cylinder 41 is returned to the original shape, the elastic force of the insulator 40 is transmitted to the pair of large arc portions 42. The outer cross member 5 is brought into contact with the outer periphery of the rear cross member 5, and the rear cross member 5 and the insulator 4
0 is connected.

Also in this embodiment, since the rear cross member 5 is penetrated by the insulator 40 and the both are integrated, the same effect as in the first embodiment can be obtained. In addition, since the mount 39 can expand the space by elastically deforming the inner cylinder 41, the penetration workability is improved,
Further, similarly to the second embodiment, the processing cost of the rear cross member 5 and the inner cylinder 42 can be reduced.

Further, since the inner diameter of the pair of large arc portions 42 is set to be larger than the outer diameter of the rear cross member 5, the jig can be easily inserted into or taken out of the space, and the workability of the rear cross member 5 can be further improved. improves.

(Seventh Embodiment) FIG. 13 is a side view showing a mount 44 according to another embodiment of the present invention. An insulator 45 formed into an annular shape by a rubber-like elastic body is vulcanized and bonded to the inner periphery of the outer cylinder 13 of the mount 44.
This insulator 45 corresponds to the vibration damping member of the present invention. The metal inner cylinder 46 arranged on the inner periphery of the insulator 45 has a pair of large arc portions 47 having an inner diameter smaller than the outer diameter of the rear cross member 5, and a circumferential direction between the pair of large arc portions 47. Bent portions 4 connecting both ends of
8 is provided. The wall thickness of the pair of large arc portions 47 in the circumferential direction is set substantially uniformly.

The pair of bent portions 48 are bent into a U-shape,
The thickness is set smaller than the outer diameter, and the thickness of the pair of bent portions 48 is set smaller than the thickness of the pair of large arc portions 47. That is, the pair of bent portions 48 are configured to be more easily elastically deformed than the pair of large arc portions 47. Other configurations are the same as in the first embodiment.

To connect the rear cross member 5 and the insulator 45 in this embodiment, a pair of large arc portions 47 are elastically deformed outward in the radial direction using a jig (not shown), and The pair of bent portions 48 are elastically deformed inward in the radial direction to enlarge the space between the pair of large arc portions 47.

After the rear cross member 5 is inserted into the space between the pair of great arc portions 47 and the inner cylinder 46 is returned to the original shape, the elastic force of the insulator 40 is transmitted to the inner cylinder 46. As a result, the four connecting portions 49 of the pair of large arc portions 47 and the pair of bending portions 48 abut on the outer periphery of the rear cross member 5 in the circumferential direction, and the rear cross member 5 and the insulator 45 are connected. .

Also in this embodiment, since the rear cross member 5 is penetrated by the insulator 45 and both are connected, the same effect as in the first embodiment can be obtained. Further, since the mount 44 can expand the space between the pair of large arc portions 47 by elastically deforming the inner cylinder 46, the second
As in the embodiment, the insertion workability is improved, and the processing cost of the rear cross member 5 and the inner cylinder 46 can be suppressed.

Further, since the inner diameter of the pair of large arc portions 47 is set smaller than the outer diameter of the rear cross member 5, the jig can be easily inserted or removed from the space, and the workability of inserting the rear cross member 5 is further improved. improves.

(Eighth Embodiment) FIG. 14 is a front sectional view showing a mount 49 according to another embodiment of the present invention, and FIG. 15 is a side view of the mount 49. An annular insulator 50 made of a rubber-like elastic body is vulcanized and bonded to the inner periphery of the outer cylinder 13. This insulator 50 corresponds to the vibration damping member of the present invention.

The dimension of the insulator 50 in the direction of the axis B is set to gradually increase toward the inner peripheral side. A pair of pieces 51 made of metal having an arc-shaped side surface are arranged on the inner peripheral surface of the insulator 50 so as to face each other, and an arc-shaped side shape is provided at a position different from the pair of pieces 51 in the direction of the axis B. A pair of metal pieces 5 provided with
2 are arranged.

The pair of pieces 51 are inclined at a predetermined angle with respect to the axis B in a direction to increase the mutual interval from the outside of the outer cylinder 13 toward the inside of the outer cylinder 13. In addition, the pair of pieces 52 are inclined at a predetermined angle with respect to the axis B in a direction to increase the mutual interval from the outside of the outer cylinder 13 toward the inside of the outer cylinder 13. That is, the thickness of the insulator 50 is gradually increased from substantially the center in the direction of the axis B toward both sides.

The inner diameter of the inner surfaces of the pair of pieces 51 and 52 is set to be larger than the outer diameter of the rear cross member 5. Further, a U-shaped notch 53 is formed between both ends of the pair of pieces 51 in the circumferential direction, and a U-shaped notch is formed between both ends of the pair of pieces 52 in the circumferential direction. A notch 53 is formed. Other configurations are the same as in the first embodiment.

When connecting the insulator 50 and the rear cross member 5 having the above structure, the insulator 50 is elastically deformed, and the pair of pieces 51 and 52 are moved in a direction substantially parallel to the axis B as shown by a dotted line in FIG. To the position where Then, after inserting the rear cross member 5 into the space between the pair of pieces 51 and 52, the inner peripheral surfaces of the pair of pieces 51 and 52 are resiliently applied by the insulator 50 as shown in FIG. If the outer peripheral surface is in line contact, the insulator 50 and the rear cross member 5 are connected.

Also in this embodiment, since the rear cross member 5 is penetrated by the insulator 50 and both are connected, the same effect as in the first embodiment can be obtained. Further, since the pair of pieces 51 and 52 are inclined at a predetermined angle with respect to the axis B in advance, the pressing force acting on the pair of pieces 51 and 52 from the insulator 50 after the rear cross member 5 is inserted in the direction of the axis B. Both ends are strong and gradually weaken toward the center.

That is, the relative movement of the rear cross member 5 and the mount 49 in the direction of the axis B is prevented by the elastic force of the insulator 50. Therefore, in this embodiment, it is not necessary to provide a special component for restricting the relative movement of the mount 49 and the rear cross member 5 in the direction of the axis B, which can further contribute to a reduction in the number of components and a reduction in manufacturing cost.

(Ninth Embodiment) FIG. 16 is a front sectional view showing a mount 54 according to another embodiment of the present invention, and FIG. 17 is a side view of the mount 54. An annular insulator 55 made of a rubber-like elastic body is vulcanized and bonded to the inner periphery of the outer cylinder 13. This insulator 55 corresponds to the vibration damping member of the present invention.

The dimension of the insulator 55 in the direction of the axis B is set to gradually increase toward the inner peripheral side. A pair of metal-made pieces 56 each having an arc-shaped side surface are disposed on the inner peripheral surface of the insulator 55 so as to face each other, and at a position different from the pair of pieces 56 in the direction of the axis B, an arc-shaped side shape is provided. A pair of metal pieces 5 provided with
7 are arranged.

The pair of pieces 56 are inclined at a predetermined angle with respect to the axis B in a direction in which the mutual interval increases from the outside of the outer cylinder 13 toward the inside of the outer cylinder 13. Further, the pair of pieces 57 are inclined at a predetermined angle with respect to the axis B in a direction in which a mutual interval increases from the outside of the outer cylinder 13 toward the inside of the outer cylinder 13. That is, the thickness of the insulator 55 is gradually increased from substantially the center in the direction of the axis B toward both sides.

Further, the opposing ends of the pieces 56 and 57 are connected by bent portions 58, respectively. The thickness of the bent portion 58 is set to be thinner than the pair of pieces 56 and 57. A U-shaped notch 59 is formed between both ends of the pair of pieces 56 in the circumferential direction, and a U-shaped notch is formed between both ends of the pair of pieces 57 in the circumferential direction. A notch 59 is formed. Other configurations are the same as in the first embodiment.

When connecting the insulator 55 and the rear cross member 5 having the above structure, the insulator 55 is elastically deformed, and the pair of pieces 56 and 57 are moved in a direction substantially parallel to the axis B as shown by a dotted line in FIG. To the position where When the rear cross member 5 is inserted into the space between the pair of pieces 56 and 57, the inner peripheral surfaces of the pair of pieces 56 and 57 are formed by the elastic force of the insulator 55 as shown in FIG. The outer peripheral surface is in line contact, and the insulator 55 and the rear cross member 5 are connected.

Also in this embodiment, since the rear cross member 5 is penetrated by the insulator 55 and both are connected, the same effect as in the first embodiment can be obtained. Further, since the pair of pieces 56 and 57 are inclined at a predetermined angle with respect to the axis B in advance, the same effects as in the ninth embodiment can be obtained.

(Tenth Embodiment) FIG. 18 is a front sectional view showing another embodiment of the present invention. The rear cross member 60 includes a pair of member members 61 divided into two in the direction of the axis B. The pair of member members 61 are formed by shaping metal into a pipe having a circular cross section, and have a symmetric shape. Flat portions 62 are formed at opposite ends of the pair of member members 61. A bolt hole 63 is formed in the flat portion 60, and a bolt is inserted into the bolt hole 63 to be fixed to a side member of the vehicle body. Further, a shaft hole 64 in the direction of the axis B is formed at the end of the pair of member members 61 on the side facing each other.

A mount 65 is sandwiched and fixed between the pair of member members 61. The mount 65 includes a metal outer cylinder 66, an annular insulator 67 adhered to the inner periphery of the outer cylinder 66, and an insulator 6.
And a shaft 68 penetrating the center of the shaft 7. This insulator 67 corresponds to the vibration damping member of the present invention.

The insulator 67 is made of a rubber-like elastic material, and has a length in the direction of the axis B of the insulator 67,
The length of the outer cylinder 66 in the direction of the axis B is set to be substantially the same. The length of the shaft 68 in the direction of the axis B is set to be longer than the length of the insulator 67 in the direction of the axis B, and protrudes from both sides of the insulator 67 by the same length. Axis 68
The outer diameter of the shaft 68 is set substantially equal to the inner diameter of the shaft hole 64.
Is press-fitted and fixed in the shaft hole 64. The mount 65 is fixed to the motor by bolts or the like.

In this embodiment, since the shaft 68 is passed through the insulator 67 to connect the insulator 67 and the rear cross member 60, no components such as bolts and brackets are used, and the same as in the first embodiment. The effect of is obtained.

(Eleventh Embodiment) FIG. 19 is a front sectional view showing another embodiment of the present invention. In this example,
Annular washers 69 are arranged on both sides of the insulator 67 in the axial direction. The washer 69 is mounted on the shaft 68, and the outer diameter of the washer 69 is set to be larger than the outer diameter of the member member 61. The inner diameter of the washer 69 is set substantially equal to the inner diameter of the shaft hole 64. That is, the surface area of the side surface of the washer 69 is
Are set to be wider than the area of the opposing side surfaces. Other configurations are the same as in the tenth embodiment. In the eleventh embodiment, the same effect as in the tenth embodiment can be obtained.

In the eleventh embodiment, the member members 61
The side surface of the washer 69 having an area larger than the area of the opposing side surface is in contact with both side surfaces of the insulator 67. For this reason, when the vibration on the motor side is transmitted to the insulator 67 and the insulator 67 vibrates in the direction of the axis B, the load per unit area applied to the side surface of the insulator 67 can be reduced as compared with the tenth embodiment. .

Therefore, biting of the pair of member members 64 into the insulator 67 and the insulator 6
7 can be prevented, and the durability of the insulator 67 can be improved. It should be noted that the same effect as the washer 69 can be obtained by forming an annular flange on the outer periphery of the opposite end of the pair of member members 61 instead of the washer 69.

Although the first to eleventh embodiments show the case where the cross section in the radial direction of the rear cross member is circular, it may be set to a polygon or an ellipse. . When the cross-sectional shape of the rear cross member is set in this manner, the shape on the insulator side is, of course, set to a shape that can penetrate the rear cross member. Further, when the shapes of the rear cross member and the insulator are set in this manner, the rear cross member and the insulator are positioned in the circumferential direction, so that the workability in the assembling process is improved.

(Twelfth Embodiment) FIG. 20 is a plan view showing a schematic structure of another embodiment of the present invention, and FIG.
21 is a side sectional view taken along line II of FIG.
FIG. 2 is a front sectional view taken along line II. Both ends of a rear cross member 70 arranged substantially parallel to the inertia main axis of the motor 7 are fixed to the auxiliary member 4 by bolts 71. The rear cross member 70 has two component plates 71, 7
2 are superimposed on each other.

A pair of rising portions 73 are formed at substantially the center in the longitudinal direction of the component plate 71, and the upper ends of the rising portions 73 are connected by a horizontal portion 74. A pair of hanging parts 75 are formed substantially at the center of the component plate 72 in the longitudinal direction, and the lower ends of the hanging parts 75 are connected by a horizontal part 76. In this manner, a box-shaped holding chamber 77 surrounded by the pair of rising portions 73, horizontal portions 74, hanging portions 75, and horizontal portions 76 is formed.

The holding chamber 77 is opened at the front of the vehicle, and a pair of stopper plates 78 are vertically elongated in the holding chamber 77.
And it is stored in parallel. Between the pair of stopper plates 78, an insulator 79 formed of a rubber-like elastic body into a rectangular parallelepiped or a cubic shape is disposed. The insulator 79 has a shaft hole 80 opened to the front side.

On the other hand, at the rear of the motor 7, a shaft 81 projecting substantially horizontally and orthogonal to the rear cross member 71.
Is fixed, and the free end of the shaft 81 is inserted into the shaft hole 80 of the insulator 79. A mount 82 is configured by the shaft 81 and the insulator 79. The arrangement of a control unit (not shown) above the front cross member 2 is the same as in the first embodiment.

According to this embodiment, the insulator 79
And the shaft 81 is inserted into the shaft hole 80 of the insulator 79 to connect the insulator 79 to the rear cross member 71 and the motor 7, so that the number of parts is reduced and the first An effect similar to that of the embodiment can be obtained.

In this embodiment, when the shaft 81 vibrates in the longitudinal direction of the rear cross member 71 due to the vibration of the motor 7, the vibration is absorbed by the elastic force of the insulator 79. In this case, the pair of stoppers 78 restricts the insulator 79 from moving in the longitudinal direction of the rear cross member 71. Therefore, it is not necessary to fix the insulator 79 to the rear cross member 71 by vulcanization or the like. Since the motor 7 is positioned in the front-rear direction by the mounts 9 and 10, the shaft 81 does not come out of the shaft hole 80. Although this embodiment shows a case where the cross-sectional shape of the shaft 81 and the shaft hole 80 is circular, it may be set to a polygon or an ellipse.

The motor used in the present invention can be exemplified by a gasoline engine, a diesel engine, an LPG engine and the like in addition to the motor. Further, in the present invention, it is also possible to use a front cross member, a side member, a reinforcement, and the like as support members, and to connect these support members to the attenuation member. Further, the present invention is also applicable to a case where a transmission alone or a transaxle incorporating a transmission and a final reduction gear is connected to a vibration damping member. Furthermore, it is also possible to directly connect the vibration body or the support member and the vibration damping member by screw connection. Further, it is also possible to attach the vibration damping member to the vibration body side and directly connect the shaft protruding from the support member side to the vibration damping member.

Here, the characteristic features of the present invention disclosed on the basis of the above embodiments are listed as follows. That is, the cross member provided on the vehicle body passes through the insulator of the mount. Further, a cross member provided on the vehicle body sandwiches the insulator of the mount.

[0094]

As described above, according to the present invention, since at least one of the vibrating body and the support member is directly coupled to the vibration damping member by the mutual shape, the mutual members are connected. Connection parts are not required. Therefore, the number of parts and the number of assembling steps are reduced as much as possible, and the manufacturing cost can be suppressed. Further, the vehicle can be reduced in weight as much as possible, and required driving force can be suppressed. Further, the structure is simplified, and the degree of freedom of the component layout is increased.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a schematic side view of FIG.

FIG. 3 is a perspective view showing a mount and a rear cross member used in FIG. 1;

FIG. 4 is a front sectional view of the mount used in FIG. 2;

FIG. 5 is a side view of the mount used in FIG. 1;

FIG. 6 is a side view showing a mount according to a second embodiment of the present invention.

FIG. 7 is a side view showing a mount according to a second embodiment of the present invention.

FIG. 8 is a side view showing a mount according to a third embodiment of the present invention.

FIG. 9 is a side view showing a mount according to a third embodiment of the present invention.

FIG. 10 is a side view showing a mount according to a fourth embodiment of the present invention.

FIG. 11 is a side view showing a mount according to a fifth embodiment of the present invention.

FIG. 12 is a side view showing a mount according to a sixth embodiment of the present invention.

FIG. 13 is a side view showing a mount according to a seventh embodiment of the present invention.

FIG. 14 is a front sectional view showing a mount according to an eighth embodiment of the present invention.

FIG. 15 is a side view showing a mount according to an eighth embodiment of the present invention.

FIG. 16 is a front sectional view showing a mount according to a ninth embodiment of the present invention.

FIG. 17 is a side view showing a mount according to a ninth embodiment of the present invention.

FIG. 18 is a front sectional view showing a mount according to a tenth embodiment of the present invention.

FIG. 19 is a front sectional view showing a mount according to an eleventh embodiment of the present invention.

FIG. 20 is a plan view showing a schematic configuration of a twelfth embodiment of the present invention.

FIG. 21 is a side sectional view taken along line II of FIG. 20;

FIG. 22 is a front sectional view taken along line II-II of FIG. 20;

[Explanation of symbols]

5, 60, 70 Rear cross member (supporting member) 7 Motor (motor, vibrating body) 8 Transaxle (vibrating body) 15, 32, 36, 45, 50, 55, 67, 79 Insulator (vibration damping member) A Motor Installation area

Claims (1)

[Claims] 1. A vibrating body comprising: a supporting member provided on a vehicle body for supporting a vibrating body in a prime mover installation area; and a vibration damping member interposed at a connecting portion between the vibrating body and the supporting member. In the supporting structure, at least one of the vibrating body or the supporting member and the vibration damping member have a shape for directly connecting members to each other.