JP7115243B2 - Support structure for automotive parts - Google Patents

Description

The present invention relates to a support structure for vehicle-mounted parts.

A vehicle such as an automobile is provided with side members extending in the front-rear direction of the vehicle on both sides in the width direction of the vehicle. Some are known to absorb the impact of time.

Further, in Patent Document 1, a center frame extending in the longitudinal direction of the vehicle is arranged between side members on both sides in the width direction of the vehicle, and the center frame is fixed to the side members. Further, the engine, which is a component mounted on the vehicle, is supported by the center frame via anti-vibration rubber.

Therefore, in Patent Document 1, the parts mounted on the vehicle are supported by the side members via the anti-vibration rubber and the center frame. The anti-vibration rubber suppresses transmission of vibrations of the parts to the center frame and the side members, and transmits vibrations from the road surface to the parts via the side members and the center frame of the vehicle. is suppressed.

JP-A-2005-59681

However, in Patent Document 1, when an impact due to a collision in the longitudinal direction is applied to the vehicle, deformation in the longitudinal direction of the side members for absorbing the impact is caused by the center frame fixed to the side members. There is a risk of interference. As a result, it becomes difficult to suitably deform the side members in the front-rear direction in order to effectively absorb the impact, and the impact adversely affects components supported by the center frame.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an on-vehicle component support structure capable of suppressing hindrance to longitudinal deformation of a side member for absorbing the accompanying impact when a vehicle collides in the longitudinal direction. .

Means for solving the above problems and their effects will be described below.
In the vehicle-mounted component support structure for solving the above-described problems, the side members extending in the front-rear direction on both sides in the width direction of the vehicle support components provided between the side members. More specifically, a support device is provided for supporting the components on the side members. The support device includes a first bracket fixed to the side member, a second bracket fixed to the component and displaced from the first bracket in the longitudinal direction of the vehicle, and the first bracket and the second bracket. Equipped with anti-vibration rubber that connects to the bracket.

According to the above configuration, when the vehicle collides in the front-rear direction, the side member tends to deform in the front-rear direction due to the impact caused by the collision. Try to move in the direction At this time, the first bracket is displaced relative to the second bracket and the component through elastic deformation of the anti-vibration rubber. Therefore, deformation in the front-rear direction of the side member for absorbing the impact due to the collision is suppressed from being hindered by the first bracket, the vibration-proof rubber, the second bracket, and the parts connected to the side member. Moreover, the transmission of the impact to the component side via the side member, the first bracket, the rubber vibration isolator, and the second bracket is suppressed through the elastic deformation of the rubber vibration isolator.

In the vehicle component support structure, the first bracket may extend in the width direction of the vehicle and be fixed to the side member.
In the vehicle-mounted component support structure for solving the above-described problems, side members extending in the front-rear direction on both sides in the width direction of the vehicle support components provided between the side members. In the vehicle-mounted component support structure, cross members extending in the width direction of the vehicle and fixed to the side members are provided between the side members positioned on both sides in the width direction of the vehicle . Further, a support device is provided for supporting the component on the side member. The support device includes a first bracket fixed to the cross member, a second bracket fixed to the component and displaced from the first bracket in the longitudinal direction of the vehicle, and the first bracket and the second bracket. Equipped with anti-vibration rubber that connects to the bracket.

In the support structure for the in-vehicle component, the side member may be provided with a fragile portion that becomes a starting point of deformation due to impact in the front-rear direction of the vehicle at the time of collision.

According to this configuration, by appropriately determining the position of the weakened portion in the direction in which the side member extends, deformation of the side member in the front-rear direction when the impact due to the collision is applied can absorb and absorb the impact. The deformation can be controlled so that the deformation is suitable for suppressing the transmission of the energy to the component.

In the vehicle-mounted component support structure, the first bracket may be connected to the second bracket via a first rubber vibration isolator, an intermediate member, and a second rubber vibration isolator. Further, a first rubber vibration isolator is fixed to the first bracket and a second rubber vibration insulator is fixed to the second bracket, and the first rubber vibration insulator and the second rubber vibration insulator are fixed to the second bracket. are connected by an intermediate member. The first rubber vibration isolator is provided so as to expand and contract at least in the vertical direction between the first bracket and the intermediate member. The second anti-vibration rubber is provided between the opposing surfaces of the intermediate member and the second bracket that are inclined with respect to the horizontal plane.

According to the above configuration, even if the component vibrates in multiple directions during its operation, the transmission of the vibration to the side member can be effectively suppressed through the elastic deformation of the second rubber vibration isolator. can be done. In addition, transmission of vibration from the road surface on which the vehicle travels from the side member side to the component side is effectively suppressed through elastic deformation in the vertical direction of the first rubber vibration insulator. Further, displacement of the first bracket accompanying deformation of the side member in the front-rear direction is made relatively to the second bracket and the above-mentioned parts mainly through elastic deformation of the second rubber vibration isolator.

Advantageous Effects of Invention According to the present invention, when a vehicle collides in the longitudinal direction, it is possible to suppress hindrance of deformation in the longitudinal direction of the side member for absorbing the accompanying impact.

FIG. 4 is a plan view showing a portion of the side member near the front end of the vehicle; The side view which shows the front-end side|approaching part of a vehicle in a side member. Sectional drawing which shows the support apparatus which supports an electric compressor to a side member. FIG. 4 is a cross-sectional view showing the support device when the side member is deformed due to a collision in the longitudinal direction of the vehicle; The top view which shows the other example of a support apparatus.

An embodiment of a support structure for vehicle-mounted components will be described below with reference to FIGS. 1 to 4. FIG.
As shown in FIG. 1, side members 1 and 2 extending in the longitudinal direction of the vehicle (horizontal direction in FIG. 1) are provided on both widthwise sides of the vehicle (upper and lower sides in FIG. 1), respectively. Note that FIG. 1 shows a state of the side members 1 and 2 near the front end of the vehicle viewed from above. The side member 1 is positioned closer to the center of the vehicle in the width direction than the side member 2 . In the above vehicle, when the vehicle collides in the longitudinal direction, the side member 1 is deformed in the longitudinal direction of the vehicle to absorb the impact of the collision.

A plurality of cross members 3 to 5 extending in the width direction of the vehicle are fixed to side members 1 on both sides in the width direction of the vehicle. These cross members 3 to 5 are parallel to each other at a predetermined interval in the longitudinal direction of the vehicle (horizontal direction in FIG. 1). 1 is connected. Of the cross members 3 to 5, the cross member 5 located on the rearmost side of the vehicle (right side in FIG. 1) passes through the side member 1 and is also fixed to the side member 2. As shown in FIG.

Further, cross members 6 extending in the width direction of the vehicle are provided between the front ends of the side members 2 positioned on both sides in the width direction of the vehicle. Both ends of the cross member 6 in the longitudinal direction are fixed to the front ends of the side members 2 located on both sides in the width direction of the vehicle. Therefore, the side members 2 positioned at both ends in the width direction of the vehicle are connected by the cross members 6 and 5 , and are also connected to the side member 1 by the cross member 5 .

FIG. 2 shows the side members 1, 2, etc. of FIG. 1 viewed from the left side (lower side of FIG. 1). As can be seen from FIG. 2 , the side member 2 is curved such that the portion located on the front side of the vehicle (left side in FIG. 2 ) relative to the cross member 5 is located above the side member 1 . . A front end portion of the side member 1 is fixed to a lower end portion of a connecting bar 7 extending in the vertical direction, and an upper end portion of the connecting bar 7 is fixed to the side member 2 . Therefore, as shown in FIG. 1, the side member 1 and the side member 2 positioned on one side of the width direction of the vehicle are connected by the connecting bar 7, and the side member 1 and the side member 2 positioned on the other side are also connected. connected by bar 7.

As shown in FIG. 1, the vehicle is provided with an electric compressor 8, which is a component mounted on the vehicle, and a support device 9 for supporting the electric compressor 8 on the side member 1. As shown in FIG.

The electric compressor 8 has a piston that reciprocates by a rotating motor, and vibrates in multiple directions during operation due to the rotation of the motor and the reciprocating movement of the piston. The electric compressor 8 is located between the side members 1 positioned on both sides of the vehicle in the vehicle width direction, and on the front side of the vehicle (left side in FIG. 1) relative to the cross member 5 . It is provided between the cross member 4 and the cross member 4 .

Further, the support devices 9 are provided on the front side and the rear side of the electric compressor 8, respectively. A support device 9 positioned on the front side of the electric compressor 8 supports the front portion of the electric compressor 8 on the side member 1, and a support device 9 positioned on the rear side of the electric compressor 8 supports the rear portion of the electric compressor 8. It is for supporting the side member 1 .

A portion of the side member 1 between the cross member 4 and the cross member 5, which corresponds to the electric compressor 8, has a weak portion that becomes a starting point of deformation due to the impact of a collision in the longitudinal direction of the vehicle. 10 are provided. The side member 1 is formed by spot-welding two plate members extending in the longitudinal direction of the side member 1 at predetermined intervals along the longitudinal direction. A part of the side member 1 in the longitudinal direction is not spot-welded, and the part not spot-welded is the fragile portion 10 .

Next, the support device 9 will be described in detail.
As shown in FIG. 3 , the support device 9 includes a first bracket 11 fixed to the side member 1 and a first bracket 11 fixed to the electric compressor 8 and positioned so as to be offset in the longitudinal direction of the vehicle with respect to the first bracket 11 . and a second bracket 12 .

The first bracket 11 extends in the width direction of the vehicle (direction perpendicular to the plane of FIG. 3), and is positioned on both sides of the vehicle in the width direction of the side members 1 (only one side member 1 is shown in FIG. 1). fixed for The fragile portion 10 of the side member 1 is formed by the first bracket 11 of the support device 9 positioned on the front side of the electric compressor 8 and the first bracket 11 of the support device 9 positioned on the rear side of the electric compressor 8 in the side member 1 . It is provided in a portion between the bracket 11 .

Further, the support device 9 includes a first rubber vibration isolator 13 connecting the first bracket 11 and the second bracket 12 , an intermediate member 14 , and a second rubber vibration isolator 15 . Specifically, a first rubber vibration isolator 13 is fixed to the first bracket 11, and a second rubber vibration isolator 15 is fixed to the second bracket 12. 2 and the vibration-proof rubber 15 are connected by an intermediate member 14 .

In addition, in the support device 9 positioned in front of the electric compressor 8, the first rubber vibration isolator 13, the intermediate member 14, the second rubber vibration insulator 15, and the second bracket 12 extend in the width direction of the vehicle (the plane of FIG. 3). ) are provided at intervals (only one set is shown in FIG. 3). Also, in the support device 9 located behind the electric compressor 8, the first rubber vibration insulator 13, the intermediate member 14, the second rubber vibration insulator 15, and the second bracket 12 are spaced apart in the width direction of the vehicle. Two sets are provided (only one set is shown in FIG. 3).

The first rubber vibration isolator 13 is formed in a cylindrical shape, and is arranged above the first bracket 11 so as to vertically sandwich the end of the intermediate member 14 on the first bracket 11 side. A shaft member 16 is inserted downward through the first rubber vibration isolator 13 , the intermediate member 14 , and the first bracket 11 . Furthermore, a locking member 18 is locked to the end portion of the shaft member 16 opposite to the head portion 16 a and the lower portion of the first bracket 11 .

As a result, the first rubber vibration isolator 13 is fixed to the first bracket 11 between the locking member 18 and the head portion 16a of the shaft member 16, and the first bracket 11 and the first bracket in the intermediate member 14 are fixed. 11 side end is connected by the first anti-vibration rubber 13 . The first rubber vibration isolator 13 is expandable and contractable at least in the vertical direction. The first bracket 11 and the intermediate member 14 are guided along the shaft member 16 and can move relative to each other in the vertical direction through the vertical expansion and contraction of the first rubber vibration isolator 13 .

The second anti-vibration rubber 15 is arranged between the facing surfaces of the end portion of the intermediate member 14 on the second bracket 12 side and the end portion of the second bracket 12 on the intermediate member 14 side. The opposing surfaces of the ends of the intermediate member 14 and the second bracket 12 are inclined with respect to the horizontal plane so as to be positioned downward as the electric compressor 8 is approached. An upper shaft portion 15a is fixed to the upper end of the second rubber vibration isolator 15 so as to protrude upward and pass through the second bracket 12, and an intermediate member 14 is fixed to the lower end of the second rubber vibration isolator 15 so as to protrude downward. A lower shaft portion 15b passing through is fixed.

A locking member 19 is locked to a portion of the upper shaft portion 15a that projects upward beyond the second bracket 12, and a locking member is mounted to a portion of the lower shaft portion 15b that projects downward beyond the intermediate member 14. By locking the second rubber 20 , the second anti-vibration rubber 15 is fixed to the second bracket 12 and connected to the end of the intermediate member 14 on the second bracket 12 side. The intermediate member 14 and the second bracket 12 can move relative to each other through expansion and contraction of the second rubber vibration isolator 15 .

A bolt 21 penetrates the end of the second bracket 12 on the side of the electric compressor 8 from the front side (left side in FIG. 3) to the rear side (right side in FIG. 3). The bolt 21 also extends horizontally through the lower end of the electric compressor 8 . A nut 22 is attached to the end of the bolt 21 on the rear side of the vehicle.

Next, the operation of the support structure for the on-vehicle component will be described.
In the vehicle, even if the electric compressor 8 vibrates in multiple directions during operation, the transmission of such vibrations in multiple directions to the side member 1 is suppressed mainly through the elastic deformation of the second rubber vibration isolator 15 . The second rubber vibration isolator 15 is located between the end of the intermediate member 14 on the side of the second bracket 12 and the end of the second bracket 12 on the side of the intermediate member 14, and is positioned downward as the electric compressor 8 approaches. It is positioned between opposing surfaces that are inclined with respect to the horizontal so as to Therefore, when the multi-directional vibration of the electric compressor 8 is transmitted to the second rubber vibration isolator 15 through the second bracket 12, the second rubber vibration isolator 15 elastically deforms (stretches and contracts) in accordance with the multi-directional vibration. easier. The elastic deformation of the second rubber vibration isolator 15 effectively suppresses transmission of multi-directional vibrations of the electric compressor 8 to the side member 1 side.

In a running vehicle, when the side member 1 vibrates vertically due to the vibration input from the road surface, the transmission of such vibration to the electric compressor 8 is suppressed mainly through the elastic deformation of the first anti-vibration rubber 13. be done. That is, when the vibration of the side member 1 in the vertical direction is transmitted to the first rubber vibration isolator 13, the first rubber vibration insulator 13 is elastically deformed (expanded/contracted) in the vertical direction. The fact that the vibration of the side member 1 in the vertical direction is transmitted to the electric compressor 8 via the intermediate member 14, the second rubber vibration isolator 15, and the second bracket 12 is due to the vibration of the first rubber vibration isolator 13. It is effectively suppressed by elastic deformation. Also, even if the vertical vibration of the side member 1 is transmitted to the intermediate member 14 via the first rubber vibration isolator 13, the vibration will not be transmitted from the intermediate member 14 side to the second bracket 12 side. is suppressed through elastic deformation of the second vibration-proof rubber 15 based on the same vibration.

By the way, when the vehicle collides in the front-rear direction, the side member 1 tends to deform in the front-rear direction due to the impact caused by the collision. Since the side member 1 is provided with a fragile portion 10 that becomes a starting point of deformation against an impact in the longitudinal direction of the vehicle, when the impact due to the collision is applied, the side member 1 does not move as shown in FIG. As shown, the side member 1 is deformed in the front-rear direction by breaking at the fragile portion 10 . Due to such deformation of the side member 1, the portion of the side member 1 on the front side (left side in FIG. 4) relative to the electric compressor 8 is moved to the rear side (left side in FIG. 4) with respect to the electric compressor 8 as indicated by an arrow Y1 in FIG. (right side in FIG. 4). On the other hand, the portion of the side member 1 on the rear side of the electric compressor 8 tends to move forward relative to the electric compressor 8 as indicated by an arrow Y2 in FIG.

As the side member 1 is deformed in the longitudinal direction of the vehicle, the first bracket 11 fixed to the side member 1 tends to be displaced in the longitudinal direction of the vehicle. At this time, the first bracket 11 is displaced relative to the second bracket 12 and the electric compressor 8 through elastic deformation of the second rubber vibration isolator 15 shown in FIG. Therefore, deformation of the side member 1 in the front-rear direction for absorbing the impact caused by the collision causes the support device 9 (the first bracket 11, the first rubber vibration isolator 13, the intermediate member 14, the second anti-vibration device) connected to the side member 1 to move. Obstruction by the vibration rubber 15, the second bracket 12), and the electric compressor 8 is suppressed.

Further, as described above, the elastic deformation of the second anti-vibration rubber 15 causes the impact to be transferred from the side member 1 to the support device 9 (the first bracket 11, the first anti-vibration rubber 13, the intermediate member 14, and the second anti-vibration). Transmission to the electric compressor 8 via the vibration rubber 15 and the second bracket 12 is also suppressed.

According to this embodiment detailed above, the following effects can be obtained.
(1) When the vehicle collides in the longitudinal direction, it is possible to suppress the hindrance by the support device 9 and the electric compressor 8 of the longitudinal deformation of the side member 1 for absorbing the accompanying impact.

(2) The side member 1 is provided with a fragile portion 10 that becomes a starting point of deformation due to impact in the longitudinal direction of the vehicle at the time of collision. By properly determining the position of the weakened portion 10 in the direction in which the side member 1 extends, the deformation of the side member 1 in the front-rear direction when the impact due to the collision is applied can absorb the impact and the electric compressor of the same impact. The deformation can be controlled so that it is suitable for suppressing the transmission to 8 .

(3) Even if the electric compressor 8 vibrates in multiple directions during operation, the transmission of the multidirectional vibrations to the side member 1 can be effectively suppressed through the elastic deformation of the second rubber vibration isolator 15. can. In addition, it is possible to effectively suppress transmission of vibration from the road surface on which the vehicle travels from the side member 1 side to the electric compressor 8 side through elastic deformation of the first rubber vibration isolator 13 in the vertical direction.

Note that the above embodiment can be modified, for example, as follows.
・When forming the side member 1 by spot-welding two plate-like members along the longitudinal direction, the portion not spot-welded was used as the weakened portion 10, but other weakened portions are adopted. You may That is, the side member 1 may be provided with a thinned portion, a holed portion, a notched portion, or the like, and these portions may be used as the weakened portion.

- The first bracket 11 of the support device 9 does not necessarily have to be directly fixed to the side member 1, and for example, it may be indirectly fixed as follows. That is, as shown in FIG. 5, by fixing the first bracket 11 of the support device 9 located on the front side of the vehicle (the left side in FIG. 5) to the cross member 4, the first bracket 11 is attached to the cross member. 4 to be fixed to the side member 1. Further, by fixing the first bracket 11 of the support device 9 located on the rear side of the vehicle (right side in FIG. 5) to the cross member 5, the first bracket 11 is attached to the side member 1 via the cross member 5 . be fixed with respect to

The facing surfaces between the end of the intermediate member 14 on the side of the second bracket 12 and the end of the second bracket 12 on the side of the intermediate member 14, in other words, the opposing surfaces sandwiching the second rubber vibration isolator 15 are necessarily inclined with respect to the horizontal plane. You don't have to.

- It is not always necessary to provide the first anti-vibration rubber 13 in the support device 9 . In this case, the intermediate member 14 is omitted, and the first bracket 11 is fixed to the lower shaft portion 15b of the second anti-vibration rubber 15. As shown in FIG. The second rubber vibration insulator 15 also serves as the first rubber vibration insulator 13 .

- One of the support device 9 located on the front side of the electric compressor 8 and the support device 9 located on the rear side of the electric compressor 8 may be replaced with a support member having no anti-vibration rubber.
- Although the electric compressor 8 has been illustrated as a component supported by the side member 1 of the vehicle, other components may be supported by the side member 1 as well.

DESCRIPTION OF SYMBOLS 1... Side member 2... Side member 3... Cross member 4... Cross member 5... Cross member 6... Cross member 7... Connection bar 8... Electric compressor 9... Support device 10... Weak part, DESCRIPTION OF SYMBOLS 11... 1st bracket, 12... 2nd bracket, 13... 1st anti-vibration rubber, 14... Intermediate member, 15... 2nd anti-vibration rubber, 15a... Upper shaft part, 15b... Lower side shaft part, 16... Shaft member , 16a... head, 18... locking member, 19... locking member, 20... locking member, 21... bolt, 22... nut.

Claims (5)

In a support structure for on-vehicle parts, in which side members extending in the front-rear direction on both sides in the width direction of a vehicle support parts provided between the side members,
A support device is provided for supporting the component on the side member,
The support device includes a first bracket fixed to the side member, a second bracket fixed to the component and positioned offset in the longitudinal direction of the vehicle with respect to the first bracket, and the first bracket. and the second bracket. 2. The support structure for vehicle-mounted parts according to claim 1, wherein said first bracket extends in the width direction of the vehicle and is fixed to said side member. In a support structure for on-vehicle parts, in which side members extending in the front-rear direction on both sides in the width direction of a vehicle support parts provided between the side members,
Between the side members located on both sides in the width direction of the vehicle, cross members are provided that extend in the width direction of the vehicle and are fixed to the side members.
A support device is provided for supporting the component on the side member,
The support device includes a first bracket fixed to the cross member, a second bracket fixed to the part and displaced from the first bracket in the longitudinal direction of the vehicle, and the first bracket. and a vibration isolating rubber connecting the second bracket
A support structure for an in-vehicle component, characterized by: 4. The support structure for an on-vehicle component according to claim 1, wherein the side member is provided with a fragile portion that becomes a starting point of deformation due to an impact at the time of collision in the longitudinal direction of the vehicle. The first bracket is connected to the second bracket via a first rubber vibration isolator, an intermediate member, and a second rubber vibration isolator,
A first rubber vibration isolator is fixed to the first bracket and a second rubber vibration insulator is fixed to the second bracket, and the first rubber vibration insulator and the second rubber vibration insulator are fixed to the second bracket. are connected by the intermediate member,
The first rubber vibration isolator is provided to extend and contract at least in the vertical direction between the first bracket and the intermediate member,
5. The support structure for an in-vehicle component according to claim 1, wherein the second rubber vibration isolator is provided between opposing surfaces of the intermediate member and the second bracket that are inclined with respect to a horizontal plane.

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