JP7421333B2 - car body structure - Google Patents

Description

The present invention relates to a vehicle body structure for a vehicle that travels by transmitting rotational power generated by electric power to drive wheels.

Recently, vehicles such as electric cars and hybrid cars have been increasing in order to take environmental measures such as reducing carbon dioxide emissions. When electrifying these vehicles, in addition to drive motors, drive batteries, electric air compressors, etc., these vehicles also require a power control unit (also referred to as PCU), a DC/DC converter, and an on-board charger (onboard charger or It is necessary to install electronic devices such as OBC (also called OBC).

Therefore, an electric vehicle equipped with the various vehicle components described above has been disclosed (for example, Patent Document 1). The vehicle disclosed in Patent Document 1 has vehicle components such as a drive motor, a transaxle, and an electric air compressor arranged on the front side of the vehicle. Further, the vehicle of Patent Document 1 has electronic devices such as a PCU and an on-vehicle charger arranged behind the drive motor, transaxle, and electric air compressor, and It is said that a battery for driving is placed on the side. Furthermore, the vehicle of Patent Document 1 is wired with high-voltage cables that connect the vehicle components, electronic devices, and the like.

JP2019-73222A

However, in the vehicle disclosed in Patent Document 1, as described above, vehicle components such as the drive motor and the electric air compressor are arranged on the front side of the vehicle with respect to electronic equipment, etc. In the case of a frontal collision, there is a risk that the vehicle member may enter the electronic equipment and cause the electronic equipment to be destroyed. Furthermore, in the vehicle disclosed in Patent Document 1, a high-voltage cable is wired between a vehicle member and an electronic device, and when the vehicle receives an impact from the front side or the rear side, the high-voltage cable is wired between the vehicle member and the electronic device. There was also a risk that the high-voltage cable would break if it came into contact with it.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a vehicle body structure that can prevent vehicle components such as a drive motor and an electric air compressor from coming into contact with electronic devices such as a PCU. Another object of the present invention is to provide a vehicle body structure that can avoid cable breakage when a vehicle collides.

(1) The vehicle body structure of the present invention provided to solve the above problems includes a motor that transmits rotational power to drive wheels of a vehicle, and a motor that is provided on the rear side of the vehicle with respect to the motor, and that connects the motor to the vehicle body. a supporting mount; a pair of side members extending in the longitudinal direction of the vehicle and arranged at a predetermined interval in the vehicle width direction; and a pair of side members arranged in a direction intersecting the side members and fastened to the side members. a cross member, the motor is disposed on the front side of the vehicle with respect to the cross member, and the mount is disposed below the cross member when viewed in the longitudinal direction of the vehicle. This is a characteristic feature.

In the vehicle body structure of the present invention, a motor is arranged on the front side of the vehicle with respect to a cross member arranged in a direction intersecting a pair of side members, and a mount provided on the rear side of the vehicle with respect to the motor. It is said to be placed below the cross member. Therefore, for example, when a vehicle collides with the front side, the mount is first damaged by the impact, and the motor supported by the mount can escape to the lower side of the cross member. Therefore, for example, by arranging the electronic device above the cross member, the vehicle body structure of the present invention can avoid interference between the electronic device and the motor even if an impact is received from the front side. .

(2) The vehicle body structure of the present invention provided to solve the above-mentioned problem is characterized in that at least a portion of the motor is located below the cross member when viewed in the longitudinal direction of the vehicle. It is something.

In the vehicle body structure of the present invention, at least a portion of the motor is located below the cross member when viewed in the longitudinal direction of the vehicle. In this case, the motor can reliably escape to the lower side of the cross member. In addition, in the vehicle body structure of the present invention, at least a portion of the motor overlaps with the mount when viewed in the front-rear direction of the vehicle, or at least a portion of the motor overlaps with a cross member when viewed in the front-rear direction of the vehicle. It may be.

(3) In the vehicle body structure of the present invention provided to solve the above-mentioned problems, an electric air compressor is arranged on the front side of the vehicle with respect to the cross member, and a cable connected to the electric air compressor is connected to the cross member. It is characterized by being wired so as to pass through the lower side of the member.

In the vehicle body structure of the present invention, an electric air compressor is arranged on the front side of the vehicle with respect to a cross member, and a cable connected to the electric air compressor is routed so as to pass below the cross member. Therefore, even if the vehicle receives an impact from the front or rear side, for example, it is possible to prevent the cable from being pinched between the electric air compressor and the cross member, thereby preventing the cable from breaking. Further, when the vehicle receives an impact from the front side, it is possible to allow the cable to escape below the cross member. Additionally, in the event of a frontal collision of the vehicle, the various vehicle components placed behind the cross member can be prevented from intruding into the front of the cross member due to inertia. The cable is protected by the cross member to avoid disconnection.

(4) The vehicle structure of the present invention provided to solve the above-mentioned problems is preferably characterized in that electronic equipment is arranged on the rear side of the vehicle with respect to the cross member.

According to this configuration, when the vehicle receives an impact from the front side, electronic equipment arranged on the rear side of the cross member is prevented from intruding into the front side of the cross member due to inertial force. This makes it possible to avoid interference between the electronic device and the motor, thereby suppressing damage to the electronic device. Furthermore, since the electric air compressor or the cable of the electric air compressor can be prevented from interfering with electronic equipment, damage to the electronic equipment and disconnection of the cable can be avoided.

According to the present invention, it is possible to provide a vehicle body structure that can prevent vehicle components such as a drive motor and an electric air compressor from coming into contact with electronic devices such as a PCU when a vehicle crashes. Further, it is possible to provide a vehicle body structure that can avoid cable breakage when a vehicle collides.

1 is a left side view schematically showing the configuration of a vehicle according to an embodiment of the present invention. FIG. 1 is a right side view schematically showing the configuration of a vehicle according to an embodiment of the present invention. FIG. 2 is a plan view schematically showing the configuration of the main parts of the vehicle as viewed from the first stage of electronic equipment. FIG. 2 is a plan view schematically showing the configuration of the main parts of the vehicle as seen from the second stage of electronic equipment. FIG. 2 is a plan view schematically showing the configuration of the main parts of the vehicle as seen from the third stage of electronic equipment. FIG. 2 is an enlarged left side cross-sectional view of the main part of FIG. 1; FIG. 6 is an enlarged schematic plan view of the main part of FIG. 5. FIG. FIG. 8 is an enlarged schematic cross-sectional view of the main part of FIG. 7;

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the scale is different from the actual scale for ease of explanation.

FIG. 1 is a diagrammatically simplified left side view of the vehicle 1 viewed from the left, and FIG. 2 is a right side view of the vehicle 1 viewed from the right. 3 to 5 schematically depict plan views of the vehicle 1, and hierarchically represent the accommodation state of electronic devices 56, which will be described later. As shown in FIGS. 1 to 5, a vehicle 1 employing a vehicle body structure 5 of the present invention travels by transmitting rotational power generated by electric power to drive wheels. In the present embodiment, the vehicle 1 is equipped with a motor 2 as a drive source for driving, and travels by transmitting rotational power generated by supplying electric power to the motor 2 to drive wheels. Furthermore, the vehicle 1 illustrated in this embodiment is a one-box type vehicle that employs a cab-over structure.

The vehicle 1 employing the vehicle body structure 5 includes a pair of side members 10L and 10R at the bottom of the vehicle body 3. The side members 10L and 10R are configured symmetrically, and extend in the front-rear direction, spaced apart from each other in the vehicle width direction (left-right direction). The side members 10L and 10R are arranged substantially parallel to each other on both sides in the longitudinal direction, but are bent at the intermediate portion and get closer to each other toward the front side of the vehicle.

As shown in FIGS. 3 to 5, the region formed between the side members 10L and 10R can be roughly classified into three regions: a rear region 16, an intermediate region 17, and a front region 18. The rear side region 16 is a region formed on the rear side of the vehicle 1 in a portion where the side members 10L and 10R are arranged substantially parallel to each other with a predetermined interval therebetween. The rear region 16 is a substantially rectangular region. Further, the intermediate region 17 is a region formed between the side members 10L and 10R at an intermediate portion thereof. The intermediate region 17 is formed at a portion where the side members 10L, 10R are inclined so that the distance between them becomes narrower toward the front than in the rear region 16. Therefore, unlike the rear region 16, the intermediate region 17 is a substantially trapezoidal region. The front side region 18 is a region formed on the front side of the vehicle 1 with respect to the intermediate region 17 at a portion where the side members 10L and 10R are arranged substantially in parallel. The front side area 18 has a substantially rectangular shape like the rear side area 16, but since the interval between the side members 10L and 10R is narrower than that in the rear side area 16, the front side area 18 has a substantially rectangular shape than the rear side area 16. It is said to be a small area.

A first cross member 11a that constitutes the vehicle body structure 5 of the present invention is provided in the intermediate region 17 along the vehicle width direction. Further, a second cross member 11b is provided at a predetermined distance from the first cross member 11a on the rear side of the vehicle. The first cross member 11a and the second cross member 11b span in a direction intersecting the side members 10L and 10R. Further, the first cross member 11a is located on the front side of the vehicle with respect to the second cross member 11b, and both ends thereof are in contact with the inner surfaces of the side members 10L and 10R via appropriate brackets (not shown). It has been concluded. Further, both ends of the second cross member 11b are fastened to the side members 10L, 10R via brackets supported below the side members 10L, 10R. Therefore, the second cross member 11b is arranged below the first cross member 11a. As a result, the first cross member 11a is located on the front side of the electronic device 56, which will be described later, and the first cross member 11a is arranged to face the front side of the electronic device 56. Further, a portion of the first cross member 11a overlaps with the electronic device 56 in the height direction. Furthermore, by disposing the first cross member 11a on the front side of the electronic device 56, when the vehicle 1 receives an impact from the front side due to a rear-end collision, etc., the electronic device 56 is placed on the front side of the vehicle 1. This can be suppressed by the first cross member 11a. Further, other members mounted on the front side of the vehicle 1, such as the motor 2, can be prevented from invading the electronic device 56 due to impact from the front.

As described above, in the vehicle body structure 5, the first cross member 11a and the second cross member 11b are provided so that their heights are relatively different. A vertical storage space is secured between them. Therefore, the electronic device 56 can be accommodated within the accommodation space. Moreover, by arranging the first cross member 11a in front of the electronic device 56 (above the second cross member 11b) instead of arranging it at the center of gravity of the electronic device 56 itself, the fixed portion is close to the center of gravity of the electronic device. becomes stable. As a result, the center of gravity of the electronic device 56 is located at a low position, so that the mounting state of the electronic device 56 is stabilized. Furthermore, it is possible to reduce the wobbling and vibration of the electronic device 56 due to gravitational acceleration (also referred to as G) accompanying acceleration of the vehicle 1. In addition, since the accommodation space can receive impacts from the front and back directions by the first cross member 11a and the second cross member 11b, high durability against front and rear impacts is ensured.

Further, a support portion 12 to which an electronic device 56 is fixed is formed between the first cross member 11a and the second cross member 11b. As shown in FIGS. 3 and 7, the support part 12 has three support frames attached across the first cross member 11a and the second cross member 11b, so that the surface on which the electronic device 56 is fixed becomes approximately horizontal. It is formed like this. The support part 12 can further enhance the durability of the accommodation space by being stretched between the first cross member 11a and the second cross member 11b against impact from the front direction. The electronic device 56 is mounted on the support section 12 and fixed to the support section 12 by appropriate means. Therefore, since the electronic device 56 is housed in a housing space that ensures high durability against impact from the front, the vehicle body structure is such that the electronic device 56 is unlikely to be destroyed even if it is subjected to a frontal collision. provided. Note that the electronic device 56 may be mounted directly on either or both of the first cross member 11a and the second cross member 11b, or may be mounted indirectly through a bracket or the like. .

A floor panel 13 is provided on the side members 10L and 10R. The floor panel 13 is arranged so as to straddle the side members 10L and 10R. The floor panel 13 is fixed to the upper surface of the side member 10 by, for example, being joined by welding. A vehicle compartment 14 is provided above the floor panel 13. At the front end of the vehicle interior 14, a front seat 15 consisting of a driver's seat and a passenger's seat arranged side by side in the vehicle width direction is arranged. The floor panel 13 is formed to extend at least from the foot of the front seat 15 to the rear end of the vehicle compartment 14. Further, the floor panel 13 has a space 13a formed below the front seat 15 and projecting upward. That is, the space portion 13a is formed to protrude upward from the side members 10L and 10R. In this embodiment, the space portion 13a is formed near the intermediate portion in the longitudinal direction of the vehicle.

As shown in FIGS. 3 to 5, the vehicle 1 includes a drive device 20 that transmits rotational power generated by electric power to front wheels 31L and 31R, which are drive wheels. The drive device 20 includes a motor 2 for outputting rotational power, and a transaxle 32 for transmitting the rotational power output from the motor 2 to front wheels 31L and 31R.

In the vehicle body structure 5, the motor 2 is located on the front side with respect to the space 13a and is disposed below the floor panel 13. As shown in FIG. 1, the motor 2 is disposed and fixed in a vertical position, with the output shaft 23 extending forward from the motor body 24 in the front-rear direction. Further, the motor 2 is arranged on the front side of the first cross member 11a in the front side region 18 formed between the side members 10L and 10R. Further, as shown in FIG. 6, a mount 25 is provided on the rear side of the vehicle with respect to the motor 2, and the mount 25 is fastened to a bracket provided below the first cross member 11a. It is supported by the vehicle body 3. Therefore, the mount 25 is arranged below the first cross member 11a. As a result, at least a portion of the motor 2 is located below the first cross member 11a when the vehicle 1 is viewed in the longitudinal direction. Note that at least a portion of the motor 2 overlaps the mount 25 when the vehicle 1 is viewed in the longitudinal direction, and at least a portion of the motor 2 overlaps the first cross member 11a when the vehicle 1 is viewed in the longitudinal direction. It may be something that Further, the above-mentioned support portion 12 is arranged on the vehicle rear side of the mount 25. Therefore, when a front side collision occurs, the impact received from the mount 25 can be suppressed by the support part 12 being stretched between the first cross member 11a and the second cross member 11b.

The transaxle 32 is arranged in front of the motor 2 in the front region 18 . The transaxle 32 includes a differential gear that distributes the power of the motor 2 to left and right front wheels 31L and 31R, and has the same configuration as a conventionally known one. The differential gear includes two side gears that mesh with two pinion gears that are rotatably provided within the differential case, and a ring-shaped ring gear that is fixed to the differential case. One end portions of the left and right drive shafts 37L, 37R are inserted into the differential case, and the one end portions are each connected to a side gear. Further, a ring-shaped ring gear surrounding the outer periphery of the differential case is fixed to the differential case.

The differential gear is coupled to the motor 2 so as to be capable of transmitting power. Specifically, as shown in FIG. 1, a bevel gear 38 is fixed to the output shaft 23 of the motor 2. The bevel gear 38 meshes with diagonal teeth formed on the ring gear. As a result, the differential case rotates together with the ring gear due to the power of the output shaft 23 of the motor 2. Then, the rotation of the differential case is converted to the rotation of each side gear via the pinion gear, and the left and right drive shafts 37L, 37R rotate together with each side gear, and the rotation of the drive shafts 37L, 37R is transmitted to the front wheels 31L, 31R, respectively. be done. In this way, the transaxle 32 can transmit the power of the motor 2 to the drive wheels using the above-mentioned differential gear, drive shafts 37L, 37R, and the like.

A vacuum pump 51 is provided above the motor 2 to generate negative pressure for the brake and amplify the force with which the driver applies the brake. Further, as shown in FIGS. 1 to 5, a PCU 34 (also referred to as a Power Control Unit 34) and a vehicle charger 36 (onboard A charger 36 or an OBC 36), a DC/DC converter 55, etc. (hereinafter also collectively referred to as an electronic device 56) are arranged.

The PCU 34 is used to control voltage and the like for driving the motor 2. Further, the DC/DC converter 55 converts the voltage of a battery 35, which will be described later, to a voltage for charging an auxiliary equipment battery (not shown). Here, the battery for auxiliary equipment is used, for example, for headlamps, electrical equipment used at low voltage, and the like. The on-vehicle charger 36 charges the drive battery 35 by converting between AC and DC and boosting the voltage. Further, a high voltage cable 39b is connected between the PCU 34, the motor 2, the DC/DC converter 55, the on-vehicle charger 36, the battery 35, and the like.

As shown in FIGS. 3 to 5, in the vehicle body structure 5 of this embodiment, the electronic devices 56 include the on-board charger 36 at the first stage, the DC/DC converter 55 at the second stage, and the PCU 34 at the third stage at the top. A part or all of the stacked layers are arranged inside the space 13a so that the stacked layers are stacked one on top of the other. The stacking order of these electronic devices 56 can be arbitrary depending on the shape, wiring arrangement, etc. Further, the electronic device 56 is supported by the support portion 12 formed between the first cross member 11a and the second cross member 11b. Thereby, the electronic devices 56 are stacked and arranged on the support portion 12 in a substantially horizontal state. In this embodiment, the DC/DC converter 55 and the PCU 34 are sequentially stacked with the on-vehicle charger 36 at the bottom. The on-vehicle charger 36, the DC/DC converter 55, and the PCU 34 are each fixed to the support portion 12 or the cross member 11 via appropriate brackets (not shown).

Further, the electronic device 56 is arranged above the motor 2 and the transaxle 32. Thereby, when the vehicle 1 receives an impact from the front side, it is possible to suppress the drive device 20 from interfering with the electronic device 56. Specifically, the mount 25 is first damaged by the impact from the front side, and as a result, the drive device 20 slips below the electronic device 56 as shown by the arrow in FIG. Interference with the electronic device 56 can be suppressed. Further, by arranging the electronic device 56 above the transaxle 32, it is possible to prevent the electronic device 56 from being submerged in water when the vehicle 1 is submerged in water.

The battery 35 is arranged between the side members 10L and 10R in the rear region 16 on the rear side with respect to the space 13a where the electronic device 56 is arranged. The battery 35 has a large number of battery cells 35a arranged in a single stage vertically and arranged in a horizontal direction (in the present embodiment, the vehicle width direction and the vehicle longitudinal direction). The battery 35 is arranged in a substantially rectangular rear region 16 that extends linearly on the rear side of the vehicle and is formed between the side members 10L and 10R that are arranged substantially in parallel. Therefore, the battery 35 also has a height (thickness) that can accommodate the battery cells 35a, and has a substantially rectangular external shape in plan view. Therefore, the battery 35 mounted on the vehicle 1 has battery cells 35a arranged with almost no dead space inside, and has a high capacity despite being thin.

As shown in FIGS. 3 to 5, an electric air compressor 33 is arranged in the vehicle body structure 5 on the side of the above-mentioned motor 2 and on the front side of the vehicle with respect to the first cross member 11a. The electric air compressor 33 is for air-conditioning the vehicle interior, and is arranged at a position adjacent to the motor 2 in the vehicle width direction. As shown in FIG. 8, one end of a high voltage cable 39a (also referred to as cable 39a and corresponding to the cable constituting the present invention) is connected to the rear side of the vehicle with respect to the electric air compressor 33. Further, the high voltage cable 39a is wired to pass below the first cross member 11a, and the other end of the high voltage cable 39a is connected to the battery 35. Therefore, even if the vehicle 1 receives a shock from the front side or the rear side, for example, the high voltage cable 39a will be pinched between the electric air compressor 33 and the first cross member 11a, and the high voltage cable 39a will be disconnected. etc. can be suppressed. Further, when the vehicle 1 receives an impact from the front side, the high voltage cable 39a can be released below the first cross member 11a. Furthermore, when the vehicle 1 collides with the front side, the electronic equipment 56 and the like arranged on the rear side of the first cross member 11a are suppressed from intruding into the front side of the vehicle with respect to the first cross member 11a due to inertial force. Therefore, in the event of a collision, the high voltage cable 39a is protected by the first cross member 11a and breakage is avoided.

As described above, in the vehicle body structure 5 of this embodiment, the drive device 20 including large members such as the motor 2 and the transaxle 32 is arranged in front of the battery 35. Therefore, in the vehicle 1 of this embodiment, it is easier to secure the cabin floor than when the drive device 20 is disposed on the rear side. Furthermore, by arranging the electronic device 56 inside the space 13a formed in the intermediate region 17 of the vehicle 1, the electronic device 56 is not dispersed but is housed in one place. Therefore, compared to the case where the electronic device 56 is provided in the rear area 16 of the vehicle 1, a larger storage space for the battery 35 can be secured, and the trunk of the vehicle 1 can be made wider. Thereby, the capacity of the battery 35 can be increased, and the travel time of the vehicle 1 can be extended. Furthermore, by consolidating the electronic devices 56 in the space 13a, the length of the high voltage cable 39b connecting between the PCU 34, the DC/DC converter 55, and the on-vehicle charger 36 can be minimized. Further, since it is possible to arrange the electronic device 56, the motor 2, and the battery 35 in close proximity, the length of the high voltage cable 39b can be minimized. This facilitates wiring work, reduces cost, reduces weight, and suppresses power loss. Further, since the electronic device 56 is surrounded by the space 13a formed three-dimensionally, the electronic device 56 is protected by the space 13a when the vehicle 1 receives an impact from the front. Further, since the space portion 13a has the side members 10L and 10R formed on both sides, even if the vehicle 1 receives an impact from the side, the electronic device 56 can cross the side members 10L and 10R. It is protected by members 11a and 11b.

In the vehicle body structure 5 of this embodiment, the output shaft 23 of the motor 2 is arranged vertically in front or behind the transaxle 32 so as to extend in the front-rear direction. By employing such a configuration, the vehicle 1 has a lower cabin floor. That is, if the motor 2 is arranged vertically as described above, the output shaft 23 of the motor 2 will extend in the front-rear direction. Therefore, a bevel gear 38, which is an orthogonal shaft gear, is used to connect the output shaft 23 of the motor 2 and the ring gear of the transaxle 32. Therefore, by arranging the motor 2 vertically as described above, it does not require a large installation space unlike when the motor 2 is placed horizontally, and the floor of the vehicle interior 14 can be lowered accordingly.

Further, as described above, in the vehicle body structure 5 of the present embodiment, the battery 35 is arranged in the rear region 16 between the pair of side members 10L and 10R and on the rear side of the vehicle 1. Since the distance between the side members 10L and 10R is larger in the rear region 16 than in the front region 18 and the intermediate region 17, even a large capacity battery 35 can be arranged without increasing the size in the vertical direction. Specifically, the battery 35 is configured such that a plurality of chargeable and dischargeable battery cells 35a are arranged in a single stage in the vertical direction and arranged in a plurality of rows in the horizontal direction. Furthermore, in the rear region, since the pair of side members 10L and 10R are arranged substantially parallel to each other, a dead space is less likely to occur due to the arrangement of the battery 35. Therefore, in the vehicle 1 described above, the battery 35 having a substantially rectangular shape in plan view can be mounted, and a high-capacity battery 35 can be adopted without increasing the size of the battery 35 in the vertical direction. Therefore, according to the above-described configuration, it becomes easier to lower the vehicle interior floor. Moreover, if the battery 35 is thin and has a large surface area as described above, a high effect can be expected in improving the cooling efficiency of the battery cell 35a and the charging/discharging efficiency.

In addition, in this embodiment, an example was shown in which the battery 35 employs a single stage of chargeable and dischargeable battery cells 35a arranged in a vertical direction and a plurality of them arranged in a row in a horizontal direction. It is not limited to this. For example, the battery 35 may be one in which battery cells 35a are stacked in multiple stages in the vertical direction. Further, in the above-described embodiment, an example was shown in which the battery 35 had a substantially rectangular shape in plan view, but it may have another shape.

Further, in the above-described vehicle body structure 5, the electric air compressor 33, the electronic device 56, and the drive device 20, which are electrically connected to the battery 35, are arranged in front of the battery 35. There is. Furthermore, an electronic device 56 is arranged between the drive device 20 and the battery 35. According to this arrangement, the high voltage cable 39b that connects the electronic device 56 and the battery 35 and the high voltage cable 39b that connects the motor 2 and the battery 35 forming the drive device 20 can be concentrated on the front side of the battery 35. Can be done. Moreover, the high voltage cable 39a connecting the electric air compressor 33 and the battery 35 can also be concentrated on the front side near the battery 35. As a result, effects such as simplifying the wiring of the high voltage cables 39a and 39b in the vehicle 1 and reducing the space required for wiring the high voltage cables 39a and 39b can be expected. Further, in the manufacturing process of the vehicle 1, the work of wiring the high voltage cables 39a, 39b can be simplified.

In this embodiment, the space portion 13a is provided in the intermediate region 17 of the vehicle 1, but the present invention is not limited to this. For example, it may be a vehicle in which the space portion 13a is not formed. Further, the space 13a may be formed in the front region 18 or the rear region 16. Further, in this embodiment, the space portion 13a is formed in a substantially rectangular shape, but the space portion 13a may have a shape other than the rectangular shape. Further, the amount of upward protrusion of the space portion 13a can also be set arbitrarily.

Further, in this embodiment, a plurality of electronic devices 56 are arranged inside the space 13a, but one electronic device 56 may be arranged. Further, in this embodiment, the plurality of electronic devices 56 are stacked in the vertical direction, but depending on the shape of the space 13a and the shape of the electronic devices 56, they may be arranged in parallel in the horizontal direction, or stacked in the vertical direction. An arrangement that reduces dead space may be used, such as by using a combination of lamination and horizontal lamination. Further, the electronic device 56 may be entirely housed in the space 13a, or may be partially housed in the space 13a. Furthermore, in the present embodiment, the electronic device 56 is supported by the support portion 12, but any suitable method can be used to support the electronic device 56. Furthermore, the order in which the electronic devices 56 are stacked can be arbitrary.

Further, in this embodiment, the battery 35 is arranged below the floor panel 13 on the rear side of the space 13a, but the battery 35 can be provided at any position. In this case, it is desirable that the battery 35 utilizes dead space.

Further, in the present embodiment, the drive device 20 includes a motor 2 that outputs rotational power, and a transaxle 32 that transmits the rotational power output from the motor 2 to the front wheels 31L and 31R, which are drive wheels. However, as the motor 2, an appropriate motor can be used depending on the output. Furthermore, the transaxle 32 can be configured using various differential mechanisms such as differential gears, various transmissions, and the like. Further, in the present embodiment, the motor 2 is placed vertically (in the vehicle traveling direction), but the motor 2 may be placed horizontally.

In the present embodiment, the first cross member 11a and the second cross member 11b are arranged so that their heights are relatively different when the electronic device 56 is fixed. The height difference between the member 11b and the member 11b can be set arbitrarily. In this case, it is preferable that the electronic device 56 be arranged at a low position between the first cross member 11a and the second cross member 11b. Further, the first cross member 11a and the second cross member 11b may have the same height, for example.

In the vehicle body structure 5 of this embodiment, the motor 2 is arranged on the front side of the vehicle with respect to the first cross member 11a, and the mount 25 is arranged below the first cross member 11a. can be arbitrarily set at a position below the first cross member 11a, as long as the motor 2 moves below the first cross member 11a during a forward collision, for example.

In the vehicle body structure 5 of the present embodiment, at least a portion of the motor 2 is located below the first cross member 11a when viewed in the longitudinal direction of the vehicle 1; The mount 25 may be overlapped with the mount 25 when viewed in the front-rear direction. Furthermore, at least a portion of the motor 2 may overlap the first cross member 11a when the vehicle 1 is viewed in the longitudinal direction. Furthermore, depending on the weight balance of the motor 2 and the position of the first cross member 11a, the position of the motor 2 in the height direction can be arbitrarily set below the first cross member 11a.

In the vehicle body structure 5 of this embodiment, the electric air compressor 33 is arranged on the front side of the vehicle with respect to the first cross member 11a and on the side of the motor 2, but the arrangement of the electric air compressor 33 can be changed as appropriate. For example, the electric air compressor 33 may be located above and below the motor 2. Further, although the cable connected to the electric air compressor 33 is the high voltage cable 39a, other wiring, piping, etc. may be used. Moreover, an appropriate space below the first cross member 11a can be used for the position where the cable passes below the first cross member 11a.

In the vehicle body structure 5 of this embodiment, the electronic device 56 is arranged at the rear side of the vehicle with respect to the first cross member 11a; Can be placed arbitrarily. Further, the arrangement of the electronic device 56 may be changed as appropriate depending on the position where the first cross member 11a is arranged.

Further, in the vehicle body structure 5 of the present embodiment, the electronic device 56 is disposed on the vehicle rear side with respect to the first cross member 11a, but the electronic device 56 can be disposed in various manners. For example, the front side of the electronic device 56 and the first cross member 11a may face each other, or another member such as a buffer member may be interposed between the electronic device 56 and the first cross member 11a. Further, in this embodiment, the electronic device 56 includes the PCU 34, the DC/DC converter 55, and the on-vehicle charger 36, but other electronic devices such as a control device may be provided. Also good. Further, in this embodiment, a support section 12 formed of three support frames is attached between the first cross member 11a and the second cross member 11b, and the electronic device 56 is attached to the support section 12. However, the method of mounting the electronic device 56 is not limited to this. For example, various forms can be adopted, such as a plate-shaped structure that supports the electronic device 56 on its entire surface, and a structure in which a plurality of plate-shaped, columnar, or cylindrical members are arranged side by side. Furthermore, the direction in which the various members are arranged side by side can be arbitrary. In addition, in order to reinforce the first cross member 11a and the second cross member 11b against impact from the front side, various members are arranged in a direction crossing the first cross member 11a and the second cross member 11b. It is preferable to arrange. Moreover, when reinforcing against impact from the side, the members constituting the support portion 12 may be arranged in a direction intersecting the side members 10L and 10R.

Furthermore, in the present embodiment described above, in the vehicle 1, the floor panel 13 that forms the floor surface of the vehicle interior 14 is located at a portion other than the space 13a provided below the driver's seat and the front passenger seat. It extends flatly to the rear end of the chamber 14. Therefore, the vehicle 1 is designed to have excellent livability and convenience while making effective use of the space 13a.

In the embodiment described above, an example is shown in which the floor panel 13 is simply made flat and low-profile, but the present invention is not limited to this, and can be provided with various types of vehicle structures. .

It should be noted that the present invention is not limited to the embodiments and modifications described above, and those skilled in the art will recognize that other embodiments may be made based on the teaching and spirit of the invention without departing from the scope of the claims. It's easy to understand.

INDUSTRIAL APPLICABILITY The present invention can be suitably used in electric vehicles, hybrid vehicles, etc. that travel by transmitting rotational power generated by electric power to drive wheels.

1: Vehicle 2: Motor 3: Vehicle body 5: Vehicle structure 10L: Side member 10R: Side member 11a: First cross member (cross member)
11b: Second cross member 13: Floor panel 13a: Space 16: Rear area 17: Intermediate area 18: Front area 20: Drive device 23: Output shaft 24: Motor body 25: Mount 31L: Front wheel 31R: Front wheel 32 : Transaxle 33 : Electric air compressor 34 : PCU (electronic equipment)
35: Battery 35a: Battery cell 36: In-vehicle charger (electronic device)
37L: Drive shaft 37R: Drive shaft 39a: High voltage cable (cable)
39b: High voltage cable 55: DC/DC converter (electronic equipment)
56: Electronic equipment

Claims (3)

a pair of side members extending from a front side area located on the front side of the vehicle to a rear side area located on the rear side of the vehicle and arranged at a predetermined interval in the vehicle width direction;
a motor disposed in the front region and transmitting rotational power to drive wheels of the vehicle;
a mount provided on the rear side of the vehicle with respect to the motor and supporting the motor on the vehicle body;
a cross member disposed in a direction intersecting the side member and fastened to the side member in an intermediate region located between the front side region and the rear side region;
a battery disposed in the rear region and for driving at least the motor;
an electronic device disposed in the intermediate region between the motor and the battery and protruding upward from the side member formed by the floor panel ;
has
The motor is located on the front side of the vehicle with respect to the cross member and below the space ,
A vehicle body structure characterized in that the mount is disposed below the cross member when the vehicle is viewed in a longitudinal direction. The vehicle body structure according to claim 1, wherein at least a portion of the motor is located below the cross member when the vehicle is viewed in a longitudinal direction. The cross member includes a first cross member and a second cross member arranged at a predetermined distance on the rear side of the vehicle with respect to the first cross member,
An electric air compressor is disposed on the front side of the vehicle with respect to the first cross member,
One end of a cable connected to the electric air compressor is connected to a rear side of the vehicle of the electric air compressor,
The other end of the cable is connected to the vehicle front side of the battery,
The cable is located below the first cross member, the second cross member, and the electronic device, and is connected to the first cross member and the second cross member with respect to the space portion where another cable is routed. 3. The vehicle body structure according to claim 1, wherein the wiring is routed so as to pass through an area on the opposite side via a cross member .

Images