JP4124334B2 - Car suspension system - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a suspension system for an automobile provided with a jack receiving portion that supports an external force from the jack when the automobile is lifted by the jack, and a suspension member is reinforced by the jack receiving portion.
[0002]
[Prior art]
[0003]
[Patent Document 1]
[Patent Document 1] Japanese Patent Laid-Open No. 11-268662
Conventionally, the above-described automobile suspension device is disclosed in Patent Document 1 described above.
[0005]
According to the thing of the said patent document 1, the suspension device of a motor vehicle is curving so that the middle part of the longitudinal direction may become convex upwards in the width direction of a vehicle body, and each edge part of the said longitudinal direction is a vehicle body frame. A suspension member to be coupled; a brace extending below the suspension member in the width direction of the vehicle body; spanned at both ends of the suspension member and coupled to each of the suspension members; And a support body that supports the traveling drive unit and is coupled to the brace.
[0006]
The suspension member is reinforced by a brace and a support, thereby improving the strength of the suspension member that suspends each wheel. The space between the suspension member and each halfway portion of the brace is used for exhaust pipe piping or the like.
[0007]
In general, the drive unit generates vibrations when driven. Therefore, in order to prevent this vibration from being transmitted to the suspension member, the support is usually provided with a buffer that can absorb the vibration.
[0008]
[Problems to be solved by the invention]
By the way, in the above prior art, the brace is located below the suspension member, and may abut against the running surface when the automobile is traveling on a rough road. In this case, a large impact force when the brace abuts. May be transmitted to the support coupled to the brace and damage the buffer of the support.
[0009]
Therefore, it is conceivable to provide a separate reinforcing member for releasing the coupling of the support to the brace and separating them from each other while coupling the suspension member and the brace to each other. In this way, since the impact force from the brace is not transmitted to the buffer body of the support body, it is possible to prevent the occurrence of the inconvenience of breakage of the buffer body, and to the suspension member by a predetermined amount by the reinforcing material. Strength is secured.
[0010]
However, if a reinforcing member for reinforcing the suspension member is separately provided as described above, there is a problem that the number of parts of the suspension device increases and the configuration becomes complicated.
[0011]
The present invention has been made paying attention to the above situation, and it is an object of the present invention to improve the strength of a suspension member in an automobile suspension device with a simple configuration.
[0012]
Moreover, when raising a motor vehicle with a jack, it makes it a subject to make it possible for the raise of this motor vehicle to be stabilized.
[0013]
[Means for Solving the Problems]
The automobile suspension system of the present invention for solving the above-described problems is as follows. In addition, the code | symbol attached | subjected to each term in this term does not limit and interpret the technical scope of this invention to the content of the term of the following "embodiment of invention".
[0014]
According to the first aspect of the present invention, the suspension member extends in the width direction of the vehicle body 2 and is bent so that the middle portion 17 in the longitudinal direction has a convex shape upward, and each end portion 18 in the longitudinal direction is coupled to the vehicle body frame 13. 20, a brace 22 that extends in the width direction of the vehicle body 2 below the suspension member 20, is installed on both end portions 18, 18 of the suspension member 20 and is coupled to the end portions 18, and the suspension member 20 is halfway In the automobile suspension system provided with a support body 7 projecting downward from the portion 17 and supporting the driving unit 5 for traveling, etc.
[0015]
A jack receiving portion 36 that protrudes downward from the midway portion 17 of the suspension member 20 and whose protruding end portion 33 can vertically oppose the lifting portion 35 of the jack 34 placed on the running surface 8. The jack receiving portion 36 is coupled to the longitudinal middle portion 37 of the brace 22 ,
[0016]
The upper surface of the middle part 37 of the brace 22 and the lower surface of the support 7 face each other, and a gap is provided between the upper surface of the middle part 37 of the brace 22 and the lower surface of the support 7 in the free state of the brace 22. 43, when the automobile 1 is lifted by raising the elevating part 35 of the jack 34 from below the support 7 and the middle part 37 of the brace 22, the middle part 37 of the brace 22 is The lower surface is pushed up .
[0017]
According to a second aspect of the invention, in addition to the first aspect of the invention, the suspension member 20 and the brace 22 are overlapped with each other in the vertical direction over substantially the entire longitudinal direction of the brace 22.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
2 to 4, reference numeral 1 denotes an automobile, and an arrow Fr indicates the front of the automobile 1.
[0020]
The automobile 1 supports a vehicle body 2, a suspension device 4 for suspending left and right front wheels 3, 3 on the front portion of the vehicle body 2, and a driving unit 5 for traveling so as to straddle the vehicle body 2 and the suspension device 4. Front and rear supports 6 and 7 are provided, and the front portion of the vehicle body 2 is supported on the traveling surface 8 by the wheels 3 and the suspension device 4. The drive unit 5 includes an internal combustion engine 9 and a power transmission device 10, and the wheels 3, 3 are linked to the power transmission device 10 of the drive unit 5 through a universal joint shaft (not shown). Reference numeral 11 denotes a central portion of the vehicle body 2 in the width direction.
[0021]
The vehicle body 2 includes a vehicle body frame 13 that forms a skeleton thereof, and a vehicle body main body 14 that is supported on the vehicle body frame 13 and that has a vehicle interior. The vehicle body frame 13 is provided on the left and right sides of the vehicle body frame 13. A pair of left and right side members 15, 15 that constitute side portions and extend in the front-rear direction, and a cross member (not shown) that couples the left and right side members 15, 15 to each other, are provided on each side member 15. The front portion of the drive unit 5 is supported by the body 6.
[0022]
In all the drawings, the suspension device 4 extends in the width direction of the vehicle body 2 and is curved so that a midway portion 17 in the longitudinal direction has a convex shape upward, and each end portion 18 in the longitudinal direction has each of the body frame 13. A suspension member 20 coupled to the side member 15 by a fastener 19, and extends substantially linearly in the width direction of the vehicle body 2 below the suspension member 20, and is installed on both ends 18, 18 of the suspension member 20. A brace 22 that is coupled to the end 18 by a fastener 21 and reinforces the suspension member 20 is provided, and the rear portion of the drive unit 5 is supported by the rear support 7 on the middle portion 17 of the suspension member 20.
[0023]
The brace 22 is made of sheet metal, and includes a pair of plate members 23 and 23 which are overlapped in the vertical direction and joined to each other by spot welding. The brace 22 has a cross section of each part in the longitudinal direction as a closed cross section so that sufficient strength and rigidity are ensured. The wheels 3 are suspended from the left and right sides of the suspension member 20 via a link mechanism (not shown).
[0024]
Each of the supports 6 and 7 includes a cylindrical buffer body 25 called an insulator having an axial center 24 extending in the horizontal direction, and the buffer body 25 passing through the buffer body 25 on the shaft center 24. A support shaft 26 to be fixed, and a bracket which is externally fitted to the buffer body 25 and is fixed to the buffer body 25 and is supported on either the vehicle body 2 side including the suspension device 4 or the drive unit 5 side. 27 and another bracket 28 for supporting the support shaft 26 on the other side, that is, the drive unit 5 is supported on the vehicle body 2 side via the buffer body 25, and between the vehicle body 2 side and the drive unit 5. The vibration to be transmitted at is absorbed by the elastic deformation of the buffer body 25.
[0025]
In the above case, in each front support 6, the axis 24 extends in the front-rear direction, and in the rear support 7, the axis 24 extends in the width direction of the vehicle body 2. Further, the buffer body 25, the support shaft 26, and the bracket 27 of the rear support body 7 project downward from the midway portion 17 of the suspension member 20.
[0026]
The suspension device 4 protrudes downward from the midway part 17 of the suspension member 20, and its protruding end 33 can be opposed to the raising / lowering part 35 of the jack 34 placed on the traveling surface 8 in the vertical direction. The jack receiving portion 36 is provided, and the protruding end portion 33 of the jack receiving portion 36 is joined to the upper surface of the midway portion 37 in the longitudinal direction of the brace 22 and is coupled to the midway portion 37 by a fastener 38. In this case, the rear support 7 and the jack receiving portion 36 are juxtaposed in the width direction across the center portion 11 in the width direction of the vehicle body 2.
[0027]
An engagement piece 41 protrudes downward from the lower plate member 23 of the brace 22 at the center portion 11 in the width direction of the vehicle body 2, and the engagement piece 41 is disposed below the support 7. Thus, the lifting portion 35 of the jack 34 can be engaged with the engagement piece 41 (two-dot chain line in FIGS. 1, 3 and 7).
[0028]
According to the above configuration, the suspension device 4 protrudes downward from the midway portion 17 of the suspension member 20 and the protruding end portion 33 of the suspension member 20 is placed on the running surface 8. And a protruding end 33 of the jack receiving portion 36 is joined to the upper surface of the midway portion 37 in the longitudinal direction of the brace 22 and coupled to the midway portion 37.
[0029]
For this reason, the midway portions 17 and 37 of the suspension member 20 and the brace 22 are coupled to each other by the jack receiving portion 36, so that the suspension member 20 is more reliably secured by the brace 22 via the jack receiving portion 36. It will be reinforced and its strength will improve.
[0030]
Since the reinforcement of the suspension member 20 is achieved by using the jack receiving portion 36, the strength of the suspension member 20 can be improved by a simple configuration.
[0031]
In particular, as shown in FIGS. 4 and 5, the suspension member 20, the brace 22, and the jack receiving portion 36 are overlapped with each other in the vertical direction over substantially the entire longitudinal direction of the brace 22 and the longitudinal direction of the vehicle body 2. ing.
[0032]
For this reason, the suspension member 20, the brace 22, and the jack receiving portion 36 for connecting the midway portions 17 and 37 of the suspension member 20 and the brace 22 to each other are disposed on a virtual vertical plane extending in the width direction of the vehicle body 2. Thus, the strength of the suspension member 20 with respect to the external force directed in the vertical direction is more reliably improved, that is, the strength against the external force from the side of the wheel 3 suspended on the suspension member 20 is more reliably improved during traveling. To do.
[0033]
In particular, as shown in FIGS. 1, 3 to 5, and 8, the upper surface of the middle portion 37 of the brace 22 and the lower surface of the rear support 6 face each other. A gap 43 is provided between the upper surface of the midway part 37 and the lower surface of the rear support 6 (solid line in each figure).
[0034]
When the raising / lowering part 35 of the jack 34 arrange | positioned under each of the said support body 7 and the brace 22 is engaged with the said engagement piece 41, and raising the said raising / lowering part 35, the motor vehicle 1 is raised, When the said brace 22 is raised. Is bent and the midway portion 37 pushes the lower surface of the rear support 7 upward (the chain line in FIGS. 1 and 8).
[0035]
Therefore, even when a large impact force is transmitted from the brace 22 to the rear support 7 due to the contact of the brace 22 with the traveling surface 8 when the automobile 1 travels on a rough road, the transmission of the impact force is performed as described above. This is prevented by the gap 43. Therefore, the shock absorber 25 of the rear support 7 is prevented from being damaged by the impact force.
[0036]
On the other hand, when the automobile 1 is lifted by the jack 34 as described above, the middle part 37 of the brace 22 bends upward and pushes up the lower surface of the rear support 7, so that the suspension member 20 is connected to each end of the brace 22. It is raised by the external force applied upward by the portion side and the rear support 7. Therefore, compared with the case where the suspension member 20 is raised only by the external force applied from the brace 22, the external force applied to the suspension member 20 is dispersed to prevent the suspension member 20 from being deformed. An increase of 1 is made in a stable state.
[0037]
The lower surface of the brace 22 is linearly formed substantially horizontally in a front view of the vehicle body 2 (FIG. 1), and a part of the upper surface of the middle part 37 of the brace 22 bulges upward to form the gap having a predetermined dimension. 43 is formed.
[0038]
For this reason, the gap 43 is provided below the brace 22 in a state in which a ground clearance of a predetermined dimension is secured over the entire width of the vehicle body 2.
[0039]
Further, the midway portion 37 of the brace 22 has a larger section modulus due to the increase in the cross-sectional area due to the bulging than the end portion side thereof, and therefore, the midway portion 37 of the brace 22 is bent. Is suppressed small. Therefore, when the automobile 1 is traveling, the middle portion 37 of the brace 22 is prevented from vibrating up and down, and the gap 43 is maintained at a predetermined size.
[0040]
A rubber or resin shock absorber 44 is provided in the gap 43, and the shock absorber 44 is supported by the brace 22 that is at least one of the brace 22 and the rear support 7. More specifically, the buffer body 44 is supported by one of the braces 22 described above, and a slight gap is provided between the lower surface of the other rear support body 7 and the buffer body 44. .
[0041]
For this reason, even if the brace 22 vibrates and collides with the lower surface of the rear support 7 when the automobile 1 travels on a rough road, the impact force is absorbed by the buffer body 44. The
[0042]
Although the above is based on the illustrated example, when the automobile 1 is a front and rear wheel drive type (4WD) and a long propulsion shaft is provided before and after the drive unit 5 is interlocked with the rear wheel, the vehicle body 2 In the front view (FIG. 1), the space surrounded by the suspension member 20, the brace 22, the rear support 7, and the jack receiving portion 36 may be used for the arrangement of the propulsion shaft.
[0043]
Further, when the automobile 1 is lifted by the jack 34, the lifting / lowering portion 35 of the jack 34 is disposed below the midway portion 37 of the brace 22 and the protruding end portion 33 of the jack receiving portion 36 to lift the lifting / lowering portion 35. The suspension member 20 may be raised by the elevating part 35 via the middle part 37 of the brace 22 and the jack receiving part 36.
[0044]
Further, the buffer body 44 may be supported by the rear support body 7 or may be supported across the brace 22 and the rear support body 7, and the buffer body 44 is provided in the entire gap 43. May be.
[0045]
【The invention's effect】
The effects of the present invention are as follows.
[0046]
According to a first aspect of the present invention, there is provided a suspension member that extends in the width direction of the vehicle body and is curved so that a midway portion in the longitudinal direction is convex upward, and each end portion in the longitudinal direction is coupled to the vehicle body frame, and the suspension A brace that extends in the width direction of the vehicle body below the member, is installed at both ends of the suspension member and is coupled to each of the ends , a driving unit for traveling that protrudes downward from the middle of the suspension member, and the like In a vehicle suspension system comprising a support for supporting
[0047]
A jack receiving portion that protrudes downward from a midway portion of the suspension member and has a protruding end portion that can vertically face a jack lifting portion placed on the running surface. Is coupled to a midway portion in the longitudinal direction of the brace.
[0048]
For this reason, since each middle part of the suspension member and the brace are coupled to each other by the jack receiving part, the suspension member is more reliably reinforced by the brace via the jack receiving part, and its strength is increased. improves.
[0049]
Since the reinforcement of the suspension member is achieved by using the jack receiving portion, the strength of the suspension member can be improved by a simple configuration.
[0050]
In addition, the upper surface of the middle part of the brace and the lower surface of the support body face each other, and a gap is provided between the upper surface of the middle part of the brace and the lower surface of the support body in the free state of the brace. When the automobile is lifted by raising the lifting / lowering part of the jack from below the middle part of the body and the brace, the middle part of the brace pushes up the lower surface of the support.
[0051]
For this reason, when the automobile is traveling on a rough road, the brace comes into contact with the running surface, and even if a large impact force is transmitted from the brace to the support body, the transmission of the impact force is prevented by the gap. Therefore, it is possible to prevent the buffer body of the support body from being damaged by the impact force.
[0052]
On the other hand, when the automobile is lifted by the jack as described above, the middle part of the brace pushes up the lower surface of the support, so that the suspension member applies an external force upward by each end side of the brace and the support. Given and raised. Therefore, compared to the suspension member being lifted by applying an external force only from the brace, the external force applied to the suspension member is dispersed and the suspension member is prevented from being deformed, and the rise of the automobile is stable accordingly. Made in the state.
[0053]
According to a second aspect of the present invention, the suspension member and the brace are overlapped with each other in the vertical direction over substantially the entire longitudinal direction of the brace.
[0054]
For this reason, the suspension member, the brace, and the jack receiving portion for coupling the suspension members and the middle portions of the brace to each other are disposed on a virtual vertical plane extending in the width direction of the vehicle body, and thus the suspension member The strength against the external force directed in the vertical direction is more reliably improved, that is, the strength against the external force from the wheel side suspended on the suspension member is more reliably improved during traveling.
[Brief description of the drawings]
1 is a partially enlarged detail view of FIG. 3;
FIG. 2 is a front side view of an automobile.
FIG. 3 is a front view of the front of the automobile.
FIG. 4 is a front plan view of an automobile.
FIG. 5 is a partially enlarged detail view of FIG. 4;
6 is a cross-sectional view taken along line 6-6 in FIG.
7 is a cross-sectional view taken along line 7-7 in FIG.
8 is a cross-sectional view taken along line 8-8 in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Automobile 2 Car body 3 Wheel 4 Suspension device 5 Drive unit 6 Support body 7 Support body 8 Running surface 11 Center part 13 Car body frame 17 Midway part 18 End part 20 Suspension member 22 Brace 25 Buffer 33 Protruding end part 34 Jack 35 Lifting part 36 Jack receiving portion 37 Midway portion 43 Clearance 44 Buffer

Claims (2)

A suspension member that extends in the width direction of the vehicle body and is curved so that a middle portion in the longitudinal direction has a convex shape upward, and each end portion in the longitudinal direction is coupled to the vehicle body frame, and a width of the vehicle body below the suspension member A brace that extends in the direction and is coupled to each end of the suspension member, and a support that protrudes downward from a middle portion of the suspension member and supports a driving unit for traveling, etc. In the automobile suspension system provided,
A jack receiving portion that protrudes downward from a midway portion of the suspension member and has a protruding end portion that can vertically face a jack lifting portion placed on the running surface. In the middle of the brace in the longitudinal direction ,
The upper surface of the middle part of the brace and the lower surface of the support face each other, and in the free state of the brace, a gap is provided between the upper surface of the middle part of the brace and the lower surface of the support, A suspension system for an automobile, wherein when the automobile is raised by raising the lifting / lowering section of the jack from below each of the middle parts of the brace, the middle part of the braces pushes up the lower surface of the support .   The automobile suspension system according to claim 1, wherein the suspension member and the brace are overlapped with each other in the vertical direction over substantially the entire longitudinal direction of the brace.

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