JP2012011900A - Vehicular suspension member-supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular suspension member-supporting device capable of securing the operation of a falling function of a suspension member when impact force is input, by reducing the restriction of the direction of side members' movement relative to the suspension member or vice versa.SOLUTION: The vehicular suspension member-supporting device includes front-side members 1, the suspension member 3, fastening bolts 4, 5, and a member fastening structure 6. The front-side members 1 are disposed on the right and left sides of a vehicle body and extended in the longitudinal direction of a vehicle to form a vehicle body frame structure. The suspension member 3 is fixed to the front-side members 1. The fastening bolts 4, 5 fasten and fix the suspension member 3 to the front-side members 1. The member fastening structure 6 is provided between two opposed faces 11a, 11b out of the box cross sections of the front-side members 1. With an increase of the opposed face distance L1 between the two faces 11a, 11b, it cancels the fastening and fixation of the suspension member 3 by the fastening bolts 4, 5.

Description

  The present invention relates to a vehicle suspension member support device that supports a suspension member to a side member of the vehicle by fastening.

2. Description of the Related Art Conventionally, a subframe support structure in a vehicle in which a hole in a fastening portion is a U-shaped slit and a suspension member is dropped due to the relative movement of a front side member and a suspension member in the front-rear direction at the time of a collision is known ( For example, see Patent Document 1).
And it aims at reducing the approach amount to the vehicle interior of an engine, an electric motor, etc. supported by dropping a suspension member at the time of a collision.

Japanese Patent Application Laid-Open No. 11-171046

  However, the conventional subframe support structure in a vehicle has a problem that there is a restriction in the relative movement direction of both of them, for example, if the front side member and the suspension member are both retracted, the suspension function of the suspension member is not activated. It was.

  The present invention has been made paying attention to the above-mentioned problem, and can suppress the restriction of the relative movement direction of the side member and the suspension member to be low, and can ensure the operation of the dropping function of the suspension member when the impact force is input. An object of the present invention is to provide a suspension member support device for a vehicle.

In order to achieve the above object, the suspension member support device for a vehicle of the present invention is a means including a side member, a suspension member, a fastening bolt, and a member fastening structure.
The side members are disposed at the left and right positions of the vehicle body and extend in the vehicle front-rear direction to constitute a part of the vehicle body skeleton.
The suspension member is fixed to the side member and supports a suspension link member.
The fastening bolt fastens and fixes the suspension member to the side member.
The member fastening structure is provided between two opposing surfaces of the box cross section of the side member, and the fastening distance of the suspension member by the fastening bolt is released by increasing the relative distance between the two surfaces. To do.

Therefore, when the suspension member moves away from the side member when the impact force is input, the surface of the side member on the side where the suspension member is attached is pulled. Then, the two surfaces are separated, and the relative distance between the two surfaces is increased, so that the fastening fixing of the suspension member by the fastening bolt and the member fastening structure is released. As the suspension member is fastened and released, the suspension member falls.
As described above, the member fastening structure is provided between two opposing surfaces of the box cross section of the side member. For this reason, even if the direction in which the suspension member is separated from the side member is a downward direction or an oblique direction including a front-rear direction, the distance between the two surfaces of the box cross section of the side member is Direction in which the relative distance increases.
As a result, the restriction on the relative movement direction of the side member and the suspension member can be kept low, and the operation of the dropping function of the suspension member can be ensured when the impact force is input.

1 is an exploded perspective view showing a vehicle suspension member support device according to a first embodiment. It is a disassembled perspective view which shows the member fastening structure in the suspension member support apparatus for vehicles of Example 1. FIG. The suspension member support state by the vehicle suspension member support device of Example 1 is shown, (a) shows a suspension member support state sectional view, (b) shows the distance between the opposing surfaces of the front side member in the suspension member support state. Show. The suspension member fall state by the vehicle suspension member support device of the first embodiment is shown, (a) shows a sectional view of the suspension member fall state, (b) shows the distance between the opposing surfaces of the front side member in the suspension member fall state. Show. It is a disassembled perspective view which shows the suspension member support apparatus for vehicles of Example 2. FIG. It is a side view which shows the deformation mode at the time of the collision of the suspension member in the electric vehicle (EV) equipped with the electric motor in the motor room. It is a side view which shows the support state of the suspension member in the electric vehicle (IWM-EV) of Example 2 equipped with the electric motor inside the hub of a wheel.

  Hereinafter, the best mode for realizing a suspension member support device for a vehicle according to the present invention will be described based on Example 1 and Example 2 shown in the drawings.

First, the configuration will be described.
FIG. 1 is an exploded perspective view showing a suspension member support device for a vehicle according to a first embodiment. The overall configuration will be described below with reference to FIG.

  As shown in FIG. 1, the suspension member support device for a vehicle according to the first embodiment includes a front side member 1 (side member), a suspension member 3, fastening bolts 4 and 5, and a member fastening structure 6. Yes.

  Since the front side member 1 constitutes a vehicle body in front of the passenger compartment, the front side member 1 is disposed at the left and right positions of the vehicle body and extends in the vehicle front-rear direction to form a vehicle body skeleton structure. The front side member 1 is composed of a pair of left and right symmetrical members protruding forward of the vehicle, but only one member is shown in FIG. A driving source for driving (engine or electric motor), a suspension member 3 or the like is attached to the front side member 1. The front side member 1 may be given a role of absorbing an impact at the time of a collision.

  The suspension member 3 is fixed to the lower surface of the front side member 1 and supports a suspension link member (not shown).

  The fastening bolts 4 and 5 fasten and fix the suspension member 3 to the lower surface of the front side member 1. In addition, 4a, 5a of FIG. 1 is the external thread part of the fastening bolts 4 and 5. FIG.

  The member fastening structure 6 is provided between two opposing faces of the box cross section of the front side member 1, and the suspension member 3 is fastened by fastening bolts 4, 5 by increasing the relative distance between the two faces. It is a structure to release the fixation. Here, the front side member 1 is configured in a box cross section by spot welding the flange of the main body 11 and the flange of the lid 12.

  FIG. 2 is an exploded perspective view showing a member fastening structure in the suspension member support device for a vehicle according to the first embodiment. Hereinafter, based on FIG. 2, the member fastening structure 6 of Example 1 is demonstrated in detail.

  As shown in FIG. 2, the member fastening structure 6 includes a position restriction bracket 7 (position restriction member) for restricting the position of the welding nut 8 and a welding nut 8 to which the fastening bolt 4 is screwed. Has been.

  The position restricting bracket 7 is fixed to the upper surface 11a of the two surfaces 11a and 11b facing the top and bottom of the main body 11 of the front side member 1. And it is a position control member which cancels position control of welding nut 8 when relative distance L1 of two surfaces 11a and 11b expands. As shown in FIG. 2, the position restricting bracket 7 includes flange portions 7a and 7b that are welded and fixed to the upper surface 11a of the main body portion 11, and a bracket body 7d that is bent into a trapezoidal shape that connects the flange portions 7a and 7b. And a nut hole 7c formed through the upper bottom portion of the bracket body 7d. Then, by inserting and fitting a nut hole 7c having an inner diameter that is equal to or slightly smaller than the outer diameter of the welding nut 8 to the tip portion of the welding nut 8, the position restriction of the upper and lower two-story building is controlled. To do.

  The welding nut 8 is welded to the lower surface 11b of the two surfaces 11a and 11b facing the top and bottom of the main body 11 of the front side member 1. The weld nut 8 includes a slit 8a formed by a notch in the nut axial direction, a circumferential groove 8b (circumferential groove) in the nut circumferential direction, a weld flange portion 8c, and a female screw portion 8d. As shown in FIG. 2, four slits 8a are provided at equal intervals in the circumferential direction, and the welding nut 8 is divided into four. As shown in FIG. 2, the entire circumferential groove 8 b is a U-shaped cross-sectional groove and is provided at a lower position on the flange portion 8 c side to be welded. And the internal thread part 8d screwed together with the external thread part 4a of the fastening bolt 4 is set to the upper area | region from the perimeter groove | channel 8b.

Next, the operation will be described.
First, “the problem of the suspension member support structure” will be described. Next, the operation of the suspension member support device for a vehicle according to the first embodiment will be described by dividing it into “suspension member support operation at normal time” and “suspension member dropping operation at the time of collision”.

[Problems of suspension member support structure]
2. Description of the Related Art A structure for mounting a suspension member of an automobile using an insertion pin in the front-rear direction at a fixing portion between the vehicle body and the suspension member is known (see FIG. 1 of JP-A-9-66718). Also, a subframe support structure in a vehicle in which the hole in the fastening portion between the main frame and the subframe is a U-shaped slit and the subframe is dropped due to the relative movement of the front side member and the subframe in the front-rear direction at the time of collision. Is known (refer to FIG. 2 of JP-A-11-171046).

  In any of the above structures, the suspension member (= subframe) is dropped from the side member (= vehicle body, main frame) in the event of a collision, so that the engine or the electric motor or the like supported by the suspension member can be moved to the vehicle compartment. The aim is to reduce the amount of intrusion and improve the safety of passengers.

  However, in the above structure, if the side member and the suspension member are both retracted, the relative movement direction of the both is limited, for example, the dropping function of the suspension member is not activated. Thus, if there is a restriction on the relative movement direction of the side member and the suspension member, for example, in the case of a frontal collision, the suspension member dropping function does not operate unless the relative movement direction of both members is the vehicle front-rear direction. become. In other words, the suspension member dropping function does not operate at the time of a collision in which the relative movement direction of both members is difficult to be the vehicle front-rear direction (for example, at the time of an offset collision, a side collision, or a collision from an oblique direction).

  Therefore, the fact that the relative movement direction of both members is limited means that in the event of a collision, the original meaning of reducing the amount of entry of the engine or electric motor supported by the suspension member into the passenger compartment is lost. Become. In other words, it is an important technical problem to improve the collision safety of the occupant to ensure that the suspension member's dropping function is reliably operated while limiting the relative movement direction of both members to be low.

[Suspension member support during normal operation]
3A and 3B show a suspension member support state by the vehicle suspension member support device according to the first embodiment. FIG. 3A is a sectional view of the suspension member support state, and FIG. Indicates the distance between surfaces. The normal suspension member support operation will be described below with reference to FIG.

  The suspension member 3 is fastened to the front side member 1 by fastening bolts 4 as shown in FIG. At this time, the flange portion 8 c of the fastening nut 8 is fixed by welding to the main body portion 11 of the front side member 1, and the tip end portion is held by insertion fitting with the nut hole 7 c of the position restriction bracket 7.

  In this way, a two-story position restriction structure with the position restriction bracket 7 is adopted. For this reason, even if a deformation force in the rolling direction due to the inclination of the fastening bolt 4 is applied, the suspension member 3 is firmly fixed to the front side member 1 by receiving the force without deforming the position restricting bracket 7. Can do. At this time, the distance between the opposed surfaces of the upper and lower surfaces 11a and 11b facing each other of the main body 11 of the front side member 1 is maintained at the distance L1 between the opposed surfaces as shown in FIG.

As described above, in the first embodiment, the member fastening structure 6 is welded to the position restricting bracket 7 fixed to the upper surface 11 a of the main body 11 and the lower surface 11 b of the main body 11, and the fastening bolt 4 is screwed together. The structure which has the welding nut 8 is employ | adopted.
Therefore, the operation of maintaining the position regulation of the welding nut 8 in a normal state is shown by the upper and lower two-story member fastening structure 6 having the welding nut 8 at the lower part and the position regulation bracket 7 at the upper part.
For this reason, normally, the suspension member 3 can be firmly fastened to be strong against deformation in the rolling direction due to the inclination of the welding nut 8.

In the first embodiment, as the position restricting bracket 7, a bracket that restricts the position by inserting and fitting the distal end portion of the welding nut 8 into the nut hole 7c is employed.
Therefore, although the fastening force of the fastening bolt 4 is maintained in the state of being inserted into the position restriction bracket 7, the input load leading to the suspension member 3 falling can be adjusted by adjusting the insertion allowance. That is, the larger the insertion allowance, the larger the input load that leads to the suspension member 3 falling.
For this reason, the input load leading to the suspension member 3 falling can be adjusted by a simple and small setting change such as the length setting of the welding nut 8 or the shape setting of the position restriction bracket 7.

[Suspension member dropping action at the time of collision]
FIGS. 4A and 4B show a suspension member falling state by the vehicle suspension member support device according to the first embodiment. FIG. 4A is a sectional view of the suspension member falling state, and FIG. Indicates the distance between surfaces. Hereinafter, the suspension member dropping action at the time of collision will be described with reference to FIG.

  The outline of the suspension member dropping action at the time of collision is as follows. At the time of collision, the lower surface 11b of the front side member 1 is moved while deforming, and the positional relationship with the upper surface 11a of the front side member 1 is changed. The lost suspension member 3 is dropped. When the suspension member 3 is dropped, the engine, the electric motor, etc. supported by the suspension member 3 reduce the amount of entry into the passenger compartment.

  When the suspension member 3 moves in a direction away from the front side member 1 by the input of impact force at the time of collision (in FIG. 4, as an example, the lower right direction), the fastening nut 8 is connected via the fastening bolt 4 to the front side member 1. The lower surface 11b is pulled downward while deforming. At this time, the position restriction bracket 7 does not move because it is joined to the upper surface 11b of the front side member 1, and as a result, the upper portion of the fastening nut 8 and the nut hole 7c of the position restriction bracket 7 are disengaged. Then, the fastening nut 8 that has been disengaged by the pulling force from the fastening bolt 4 has an upper portion that tapers from the circumferential groove 8 b as a base point, and drops the fastening bolt 4 and the suspension member 3. At this time, the circumferential groove 8b and the slit 8a on the fastening nut 8 assist in expanding the nut upper portion in a tapered shape.

  As described above, regardless of the direction in which the suspension member 3 is separated from the front side member 1 (for example, the downward direction, the diagonal direction including the front-rear direction, etc.) The relative distance between the surfaces 11a and 11b is an increasing direction. That is, as long as the suspension member 3 moves away from the front side member 1 due to an input at the time of collision, the two surfaces 11a and 11b expand from the distance L1 between the opposing surfaces to the distance L2 (> L1) between the opposing surfaces. It will be.

As described above, the first embodiment employs a structure in which the suspension force is lost and the suspension member 3 is dropped by increasing the relative distance between the two surfaces 11 a and 11 b of the box cross section of the front side member 1.
Therefore, the suspension member 3 falls if the relative distance between the front side member 1 and the suspension member 3 (= distance L1 between the opposing surfaces) is increased by the input at the time of collision. This separating direction may be a vertical direction or an oblique direction including a front-rear direction component, and has a higher degree of freedom in the direction than the conventional structure.
For this reason, the restriction | limiting of the relative movement direction of the front side member 1 and the suspension member 3 is restrained low, and the operation | movement of the fall function of the suspension member 3 can be ensured at the time of the input of an impact force.

In Example 1, the structure which the surrounding nut 8b and the slit 8a provide in the fastening nut 8 was employ | adopted.
Therefore, the fastening nut 8 can be narrowed at the tip of the nut by the circumferential groove 8b and the slit 8a, so that it can be easily fitted into the nut hole 7c of the position restricting bracket 7, and the assembly time can be shortened. Thereafter, when the fastening bolt 4 is fastened to the fastening nut 8, the outer diameter of the nut tip portion returns to the original and cannot be narrowed.
For this reason, by adjusting the size of the nut hole 7c of the position restricting bracket 7, it is possible to obtain a fitting state with appropriate friction after bolt fastening while ensuring easy assembly.

In the first embodiment, the fastening nut 8 has a configuration in which the entire circumferential groove 8b is provided at the lower portion and the female screw portion 8d is set above the entire circumferential groove 8b.
Accordingly, the upper part of the fastening nut 8 is easily expanded in a taper shape with the circumferential groove 8b as a base point, and the fastening bolt 4 is easily removed when the female screw part 8d is set in the upper part of the nut by being set in the taper shape. .
For this reason, the fastening bolt 4 and the suspension member 3 can be reliably dropped at the time of a collision.

Next, the effect will be described.
In the vehicle suspension member support device according to the first embodiment, the following effects can be obtained.

(1) a side member (front side member 1) which is disposed at the left and right positions of the vehicle body and extends in the vehicle longitudinal direction to form a vehicle body skeleton structure;
A suspension member 3 fixed to the side member (front side member 1) and supporting a suspension link member;
Fastening bolts 4 and 5 for fastening and fixing the suspension member 3 to the side member (front side member 1);
By being provided between two opposing surfaces 11a and 11b of the box cross section of the side member (front side member 1), the relative distance between the two surfaces 11a and 11b (distance L1 between the opposing surfaces) is increased. A member fastening structure 6 for releasing the fastening and fixing of the suspension member 3 by the fastening bolts 4 and 5;
Equipped with.
For this reason, the restriction | limiting of the relative movement direction of a side member (front side member 1) and the suspension member 3 can be restrained low, and the operation | movement of the dropping function of the suspension member 3 can be ensured at the time of input of impact force.

(2) The member fastening structure 6 includes a position restricting member (position restricting bracket 7) fixed to the upper surface 11a of the two surfaces 11a and 11b opposed to the upper and lower sides of the side member (front side member 1), A welding nut 8 which is welded to the lower surface of the two surfaces 11a and 11b facing the upper and lower sides of the side member (front side member 1) and to which the fastening bolts 4 and 5 are screwed.
For this reason, in addition to the effect of (1) above, the suspension member 3 can be firmly fastened and fixed by the two-storey member fastening structure 6 in a normal manner and resistant to deformation in the rolling direction due to the inclination of the welding nut 8. Can do.

(3) The position restricting member includes a bracket body 7d fixed to the upper surface 11a of two surfaces 11a and 11b facing the top and bottom of the side member (front side member 1), and a nut hole formed in the bracket body 7d. 7c, and a position restricting bracket 7 for restricting the position by inserting and fitting the nut hole 7c into the weld nut 8.
For this reason, in addition to the effect of (2) above, the input load that leads to the suspension member 3 falling can be easily set on a small scale, such as the length setting of the welding nut 8 or the shape setting of the position restriction bracket 7. It can be adjusted by change.

(4) The welding nut 8 has a circumferential groove (full circumferential groove 8b) in the nut circumferential direction and a slit 8a formed by a notch in the nut axial direction.
For this reason, in addition to the effect of (3) above, by adjusting the size of the nut hole 7c of the position restricting bracket 7, it is possible to obtain a fitting state with appropriate friction after bolt fastening while ensuring easy assembly. be able to.

(5) The welding nut 8 has a circumferential groove (entire circumferential groove 8b) in the nut circumferential direction at a lower position on the welded portion side, and is located in an upper region from the circumferential groove (full circumferential groove 8b) in the nut circumferential direction. A female screw portion 8d that is screwed with the male screw portions 4a and 5a of the fastening bolts 4 and 5 was set.
For this reason, in addition to the effect (4), the fastening bolt 4 and the suspension member 3 can be reliably dropped at the time of a collision.

  The second embodiment is an example in which the member fastening structure of the first embodiment is applied to an electric vehicle using an in-wheel motor.

First, the configuration will be described.
FIG. 5 is an exploded perspective view showing the vehicle suspension member support device according to the second embodiment. The overall configuration will be described below with reference to FIG.

  The suspension member support device for a vehicle according to the second embodiment is applied to an electric vehicle (IWM-EV) using an in-wheel motor. As shown in FIG. 1, front side members 21 and 21 (side members), 1 suspension member 22 (suspension member), 2nd suspension member 23 (suspension member), the front fastening part 24, the rear fastening part 25, and the center fastening part 26 are provided.

  The electric vehicle using the in-wheel motor refers to an electric motor provided inside a wheel hub or an electric vehicle including an electric motor integrated with the hub and connected coaxially. In the case of an electric vehicle using this in-wheel motor, the unsprung weight of the suspension is much higher than that of an electric vehicle equipped with an electric motor in the motor room. For this reason, the suspension types for supporting the drive wheels on the vehicle body are different, such as a two-link type (IWM-EV) and a one-link type (EV).

  The front side members 21 and 21 are constituted by a pair of symmetrical members protruding forward of the vehicle, the vehicle front side is connected by a cross member 31, and the vehicle rear side is connected by a dash member 32. A first suspension member 22 and a second suspension member 23 are attached to the front side members 21 and 21.

  The first suspension member 22 is formed of a square frame or a trapezoidal frame, and supports the left and right lower links 33 and 33.

  The second suspension member 23 is constituted by a frame that crosses the vehicle longitudinal direction center position of the first suspension member 22 in the vehicle width direction, and supports the left and right upper links 34, 34.

  The front fastening portion 24 and the rear fastening portion 25 fasten and fix the first suspension member 22 to the front side members 21 and 21. The front fastening portion 24 and the rear fastening portion 25 have fastening bolts 35 and 36 and are fastened so as to be in a deformation mode in which the first suspension member 22 is folded downward when an impact force is input.

  The center fastening portion 26 fastens and fixes the second suspension member 23 to the front side members 21 and 21 at a position intermediate between the front fastening portion 24 and the rear fastening portion 25. The center fastening portion 26 has fastening bolts 37, 37 and a member fastening structure 38, and fastens the second suspension member 23 so as to drop down when an impact force is input. That is, although the fastening bolts 37 and 37 and the member fastening structure 38 are a pair of structures, they have the same configuration as the fastening bolt 4 and the member fastening structure 6 of the first embodiment, and a detailed description thereof is omitted.

Next, the operation will be described.
FIG. 6 is a side view showing a deformation mode at the time of collision of a suspension member in an electric vehicle (EV) equipped with an electric motor in a motor room. FIG. 7 is a side view showing a support state of the suspension member in the electric vehicle (IWM-EV) of the second embodiment in which an electric motor is provided inside the wheel hub. Hereinafter, the suspension member dropping action at the time of collision will be described based on FIG. 6 and FIG.

  First, in the case of a suspension member in an electric vehicle (EV) equipped with an electric motor in the motor room, the second suspension member 23 and the upper link 34 of the second embodiment are not provided. As shown in FIG. 6, the deformation mode at the time of collision in the EV is to absorb the collision energy input into the vehicle compartment at the time of collision by folding the first suspension member 22 downward.

  On the other hand, in the case of a suspension member in an electric vehicle (IWM-EV) equipped with an electric motor inside the wheel hub, the second suspension member 23 is added to the front side member by adding a second suspension member 23 and an upper link 34. 21 and 21 need to be fastened and fixed. At this time, when a normal fastening structure using bolts and nuts is adopted, the second suspension member 23 is not detached and dropped from the front side members 21 and 21 at the time of collision, and the deformation mode at the time of collision in the EV is obstructed. .

  On the other hand, in the suspension member support structure that absorbs energy by bending the suspension member downward at the time of collision, in the second embodiment, the second suspension member 23 added to the second suspension member 23 of the present invention of the first embodiment is used. The structure was applied. That is, the same fastening bolts 37 and 37 as the first embodiment and the member fastening structure 38 are employed for the center fastening portion 26 at the intermediate portion between the front fastening portion 24 and the rear fastening portion 25.

Therefore, when the second suspension member 23 is bent downward at the time of a collision, the second suspension member 23 and the front side members 21 and 21 are easily released from each other, and the second suspension member 23 can be easily folded downward. become. For this reason, as shown in FIG. 7, the deformation mode at the time of collision with the target EV can be realized while using IWM-EV.
Since other operations are the same as those of the first embodiment, description thereof is omitted.

Next, the effect will be described.
In the vehicle suspension member support device according to the second embodiment, the following effects can be obtained.

(6) The side members are front side members 21 and 21 of an electric vehicle (IWM-EV),
The suspension member includes a first suspension member 22 that supports the lower links 33 and 33, and a second suspension member 23 that supports the upper links 34 and 34.
With respect to the front side members 21, 21, the first suspension member 22 is in a deformation mode in which the first suspension member 22 is folded downward when an impact force is input by the front fastening portion 24 and the rear fastening portion 25. To
The second suspension member 23 is connected to the front side members 21 and 21 by the center fastening portion 26 by the fastening bolts 37 and 37 and the member fastening structure 38 when the impact force is input. Fastened to drop down.
For this reason, in addition to the effects (1) to (5) of the first embodiment, the suspension type electric vehicle having the lower links 33, 33 and the upper links 34, 34 can be used. It is possible to realize a deformation mode at the time of collision that folds down.

  As mentioned above, although the suspension member support apparatus for vehicles of this invention has been demonstrated based on Example 1 and Example 2, it is not restricted to these Examples about a concrete structure, Each of Claims Design changes and additions are permitted without departing from the scope of the claimed invention.

  In Example 1, 2, the example by a welding nut and a position control bracket was shown as a member fastening structure. However, if the structure is provided between two opposing surfaces of the box cross section of the side member, and the fastening of the suspension member by the fastening bolt is released by increasing the relative distance between the two surfaces, it is concrete. Such a configuration is not limited to the first and second embodiments.

  In the first and second embodiments, an example in which the suspension member is fastened and supported to the front side member is shown. However, the suspension member may be fastened and supported to the rear side member.

  In the second embodiment, an example of application to an electric vehicle using an in-wheel motor is shown. However, the present invention can also be applied to an electric vehicle such as an electric vehicle, a hybrid vehicle, and a fuel cell vehicle equipped with an electric motor in a motor room. Furthermore, the suspension member support device of the present invention can also be applied to an engine vehicle equipped with a gasoline engine, a diesel engine, or the like.

1 Front side member (side member)
DESCRIPTION OF SYMBOLS 11 Main-body part 11a Upper surface 11b Lower surface 12 Lid part 3 Suspension member 4,5 Fastening bolt 4a, 5a Male thread part 6 Member fastening structure 7 Position control bracket (position control member)
7d Bracket body 7c Nut hole 8 Weld nut 8a Slit 8b All-around groove (circumferential groove)
8d Female thread 21 Front side member (side member)
22 First suspension member (suspension member)
23 Second suspension member (suspension member)
24 Front fastening part 25 Rear fastening part 26 Center fastening part 33 Lower link 34 Upper link 37 Fastening bolt 38 Member fastening structure

Claims (6)

A side member that is arranged in the vehicle body left-right position and extends in the vehicle longitudinal direction to form a part of the vehicle body skeleton;
A suspension member fixed to the side member and supporting a suspension link member;
A fastening bolt for fastening and fixing the suspension member to the side member;
A member fastening structure that is provided between two opposing faces of the box cross section of the side member, and that releases the fastening and fixing of the suspension member by the fastening bolt by increasing the relative distance between the two faces;
A suspension member support device for a vehicle, comprising: In the vehicle suspension member support device according to claim 1,
The member fastening structure is welded to a position regulating member fixed to the upper surface of two surfaces facing up and down of the side member, and to a lower surface of two surfaces facing up and down of the side member, and the fastening bolt A suspension member support device for a vehicle, comprising: a welding nut that is screwed together. In the vehicle suspension member support device according to claim 2,
The position restricting member has a bracket body fixed to an upper surface of two surfaces facing the top and bottom of the side member, and a nut hole formed in the bracket body, and the nut is formed at a tip of the welding nut. A suspension member support device for a vehicle, wherein the suspension member support device is a position restriction bracket for restricting a position by inserting and fitting a hole. In the vehicle suspension member support device according to claim 3,
The vehicle suspension member support device according to claim 1, wherein the weld nut has a circumferential groove in the nut circumferential direction and a slit formed by a notch in the nut axial direction. In the vehicle suspension member support device according to claim 4,
The welding nut has a circumferential groove in the circumferential direction of the nut at a lower position on the welded portion side, and an internal thread portion that is screwed with the external thread portion of the fastening bolt is set in an upper region from the circumferential groove in the circumferential direction of the nut. A suspension member support device for a vehicle, characterized in that: In the suspension member support device for a vehicle according to any one of claims 1 to 5,
The side member is a front side member of an electric vehicle,
The suspension member has a first suspension member that supports the lower link, and a second suspension member that supports the upper link,
The first suspension member is fastened to the front side member by a front fastening portion and a rear fastening portion so as to be in a deformation mode in which the first suspension member is folded down when an impact force is input,
The second suspension member is fastened to the front side member by the fastening bolt and a center fastening portion by the member fastening structure so that the second suspension member is dropped down when an impact force is input. A suspension member support device for a vehicle characterized by the above.

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