Suspension member assembly

Abstract

In a suspension member equipped with an electric unit, the holding of the electric unit To increase strength. [Solution] A suspension member 30 attached to the rear of the vehicle body, and a suspension An electric unit 20 mounted on member 30, and a front mount supporting the electric unit 20. A suspension member assembly 80 comprising 61L and a rear mount 65L, the rear Mount 65L is mounted on the upper rear of the suspension member 30, and the front mount 61L is a suspension system in which the first load-bearing axis 62L is tilted diagonally upward towards the rear of the vehicle. It is attached to the lower left and right sides of the front of member 30.

Description

Technical Field

[0001] The present disclosure relates to the structure of a suspension member assembly attached to the rear part of a vehicle body.

Background Art

[0002] Patent Document 1 describes a front mount that supports a motor in the vertical direction in a rear suspension member equipped with a motor. ータを支持する前部マウントが記載されている。

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When the front mount and the rear mount of the motor are arranged inclined with respect to the horizontal direction, the direction of the motor torque reaction force becomes oblique with respect to the vertical direction. Therefore, as described in Patent Document 1, when the direction in which the mount has a large load - bearing capacity is arranged in the vertical direction, the motor torque reaction force is applied deviated from the direction in which the mount has a large load - bearing capacity, and there may be a case where the motor torque reaction force cannot be sufficiently received. トルク反力の方向が垂直方向に対して斜めになる。このため、特許文献1に記載のように 、マウントの耐荷重の大きい方向を垂直方向に配置するとモータのトルク反力がマウント の耐荷重が大きい方向からずれて印加され、モータのトルク反力を十分に受け止められな い場合がある。

[0005] Therefore, an object of the present disclosure is to increase the holding force of an electric unit in a suspension member equipped with the electric unit. ニットの保持力を高くすることを目的とする。

Means for Solving the Problems

[0006] The suspension member assembly of the present disclosure is a suspension attached to the rear part of a vehicle body A member, an electric unit mounted on the suspension member, and the electric unit A suspension member assembly comprising left and right front mounts and left and right rear mounts that provide support. It is three-dimensional, and the left and right rear mounts are located on the left and right upper rear of the suspension member. The left and right front mounts are attached to the vehicle, and the first load-receiving axis is directed diagonally upward towards the rear of the vehicle. It is attached to the lower left and right sides of the front of the suspension member so as to be tilted. It is characterized by the following.

[0007] This allows the drive shaft to move in a direction perpendicular to the load-bearing shaft with a large load capacity. Because torque reaction force is applied, the front mount can adequately withstand the torque reaction force. Furthermore, since the weight of the electric unit is small compared to the torque reaction force, its weight is centered at the front mount. Even if the force is applied in a direction deviating from the direction perpendicular to the line, it can be supported by the front mount. Therefore, Even when the front and rear mounts are positioned side by side at an angle to the horizontal, the front The mount can adequately withstand the weight and torque reaction force of the electric unit.

[0008] In the suspension member assembly disclosed herein, the suspension member is a vehicle The left and right side beams are positioned on the sides and extend in the front-rear direction of the vehicle, and the left and right side beams It has a rectangular frame shape including a front cross member that connects in the vehicle width direction, and the left and right sides The beam has a hole through which the drive shaft connected to the electric unit passes, and the left and right The rear mount is located behind the hole and above the center of the drive shaft, where the second load The receiving shaft is attached to the left and right side beams so as to extend in the vehicle width direction, and the left and right front The mount is configured such that the first load receiving shaft extends in a direction passing through the center of the drive shaft. It may be attached to the left and right ends of the front cross member below the center of the drive shaft. It may be attached.

[0009] The direction orthogonal to the first load receiving shaft increases the load-bearing capacity and rigidity of the front mount. Since the direction of the first load receiving shaft of the front mount is orthogonal to the vehicle width direction, the front mount can support the load in the vehicle width direction of the electric unit with high rigidity. Also, the direction orthogonal to the second load receiving shaft increases the load-bearing capacity and rigidity of the rear mount. Since the direction of the second load receiving shaft of the rear mount is orthogonal to the vehicle longitudinal direction, the rear mount can support the load in the vehicle longitudinal direction of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. The direction of the first load receiving shaft of the front mount is orthogonal to the vehicle width direction, so the front mount can support the load in the vehicle width direction of the electric unit with high rigidity. Also, the direction orthogonal to the second load receiving shaft increases the load-bearing capacity and rigidity of the rear mount. Since the direction of the second load receiving shaft of the rear mount is orthogonal to the vehicle longitudinal direction, the rear mount can support the load in the vehicle longitudinal direction of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. The direction orthogonal to the second load receiving shaft increases the load-bearing capacity and rigidity of the rear mount. Since the direction of the second load receiving shaft of the rear mount is orthogonal to the vehicle longitudinal direction, the rear mount can support the load in the vehicle longitudinal direction of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. The direction orthogonal to the second load receiving shaft increases the load-bearing capacity and rigidity of the rear mount. Since the direction of the second load receiving shaft of the rear mount is orthogonal to the vehicle longitudinal direction, the rear mount can support the load in the vehicle longitudinal direction of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. The direction of the second load receiving shaft of the rear mount is orthogonal to the vehicle longitudinal direction, so the rear mount can support the load in the vehicle longitudinal direction of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. Thereby, the holding force in each direction of the left and right front mounts and the left and right rear mounts can be increased. Also, since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. Since the direction of the second load receiving shaft of the left and right rear mounts is orthogonal to the vehicle vertical direction, the rear mount can support the self-weight of the electric unit with high rigidity. It can support the self-weight of the electric unit with high rigidity.

Advantages of the Invention

[0010] In the suspension member on which the electric unit is mounted, the present disclosure can increase the holding force of the electric unit. The holding force can be increased.

Brief Description of the Drawings

[0011] [Figure 1] It is a plan view of the rear part of a vehicle to which the suspension member assembly of the embodiment is attached. [Figure 2] It is a side view of the suspension member assembly of the embodiment. [Figure 3] It is a perspective view of the suspension member shown in FIG. 1 as seen from obliquely above and rearward. [Figure 4]The perspective view of the suspension member shown in FIG. 1 as seen from the upper obliquely frontward direction. [Figure 5] It is an explanatory view showing the arrangement of the front mount and the rear mount, and the support of the electric unit in the vehicle width direction and the vehicle longitudinal direction by the front mount and the rear mount. [Figure 6] It is an explanatory view showing the arrangement of the front mount and the rear mount, the direction of the load applied to the front mount and the rear mount by the torque reaction from the drive shaft, and the support of the self-weight of the electric unit by the front mount and the rear mount.

Mode for Carrying Out the Invention

[0012] Hereinafter, the suspension member assembly 80 of the embodiment will be described. First, the vehicle 100 to which the suspension member assembly 80 is attached will be described. Incidentally, F, R, UP, and RH shown in each figure indicate the front side, the upper side, and the right side of the vehicle 100 to which the suspension member assembly 80 is attached. Also, the opposite directions of FR, UP, and RH indicate the rear side, the lower side, and the left side. Hereinafter, when simply describing using the front-rear, left-right, and up-down directions, unless otherwise specified, it indicates the front-rear in the vehicle longitudinal direction, the left-right in the vehicle width direction, and the up-down in the vehicle height direction of the vehicle 100. Also, the front-rear in the vehicle longitudinal direction, the left-right in the vehicle width direction, and the up-down in the vehicle height direction of the vehicle 100 are the front-rear in the longitudinal direction, the left-right in the lateral direction, and the up-down in the vertical direction of the suspension member assembly 80.

[0013]

[0014] As shown in FIGS. 1 and 2, the vehicle 100 includes a vehicle body 200 and a suspension member assembly 80 attached to the rear portion of the vehicle body 200. The suspension member assembly 80 includes a suspension member 30, an electric unit 20, left and right front mounts 61L and 61R, and left and right rear mounts 65L and 65R.

[0015] As shown in Figure 1, the vehicle body 200 consists of a rear unit 10, a center unit 17, and a front Includes a rear unit (not shown). The rear unit 10 constitutes the rear of the vehicle body 200. The center unit 17 constitutes the central part of the vehicle body 200. Front unit (illustrated) (not) constitutes the front part of the vehicle body 200. The rear unit 10 and the center unit 17, Each front unit is a die-cast product manufactured using a single-piece casting process. The unit is equipped with the front drive system of the vehicle 100. Figure 1 shows the rear unit 10. This shows the detached state.

[0015] The rear unit 10 consists of the left and right rear side member sections 11L and 11R, and the left and right rear wheels It includes the rear house sections 12L and 12R, and the rear floor section 13.

[0016] The left and right rear side member sections 11L and 11R are located on the left and right sides of the rear unit 10. These are the structural parts that extend in the front-to-rear direction of the vehicle. The left and right rear side member sections 11L and 11R are... The left and right suspension devices 70L and 70R have coil springs 72L and 72R that hold the upper ends of the springs. The 15L and 15R spring seats are positioned. 11L is located in the left and right rear side member sections. The rear end of the 11R is fitted with left and right crash boxes, 14L and 14R. The rear end of the 14L and 14R crash boxes is fitted with a 16-inch rear bumper reinforcement. It's being kicked.

[0017] The left and right rear wheel arch sections 12L and 12R are the left and right rear side member sections 11L and 1 It is a plate-like portion with a semicircular cross-section that is connected to the outside of the vehicle width direction of 1R. The 12L and 12R eelhouse sections house the rear wheel internally.

[0018] The rear floor section 13 is a plate member that connects the left and right rear side member sections 11L and 11R. That is the case.

[0019] The center unit 17 is connected to the front of the vehicle of the rear unit 10 by bolts or welding, etc. A cabin (not shown) is mounted above the center unit 17. Model 17 is equipped with battery pack 18.

[0020] The suspension member 30 is integrally formed by casting and is part of the rear unit of the vehicle body 200. It is mounted below 10. The suspension member 30 is the left and right side beam 31L, 31R, the rear first cross member 32, the second cross member 33, and the front front cross member It is a rectangular frame-shaped component that includes the 34.

[0021] The left and right side beams 31L and 31R are positioned on both the left and right sides of the vehicle 100, and in front of the vehicle This is the part that extends in the rearward direction. At the front end of the left and right side beams 31L and 31R, there is a mounting section. Material 68 (see Figure 2) is attached to the lower sides of the left and right rear side member sections 11L and 11R. Left and right front body mounting points 35L and 35R are provided. Also, left and right side beams At the rear of the 31L and 31R, the rear unit 10 is mounted by a mounting member 69 (see Figure 2). The rear body mounting sections 36L and 36R, which are attached to the underside, are located. Also, the left and right sides The left and right rear ends of the Dobeam 31L and 31R, 37L and 37R, are attached to the rear body at 36L. , extends from 36R toward the rear of the vehicle. The left and right rear ends of the vehicle, 37L and 37R, are on the left side. The right crash box is located further back on the vehicle than the front end of the 14L and 14R. .

[0022] As shown in Figure 2, the central part 43L of the upper part 41L of the left side beam 31L is A rear mount mounting section 58L is provided to which the rear mount 65L is attached. The right rear mount 65R is attached to the right side beam 31R. Mounting section 58R is provided. Furthermore, the detailed structure of the left and right side beams 31L and 31R is... I'll explain the details later.

[0023] The front cross member 34 connects the left and right front body mounting points 35L and 35R in the vehicle width direction. This is the part. The rear first cross member 32 is attached to the left and right rear body mounting parts 36L and 36R. This is the part that connects the two in the vehicle width direction. The second cross member 33 is connected to the first cross member 3 This is the part located in front of the vehicle, connecting the left and right side beams 31L and 31R in the vehicle width direction. ru.

[0024] Between the front cross member 34 and the first cross member 32 of the suspension member 30, An electric unit 20 is installed to drive the rear wheels. The electric unit 20 consists of a motor and a gear It is a device that integrates the motor and inverter. The electric unit 20 has left and right drive Shafts 25L and 25R are connected. The electric unit 20 has left and right front mounts 6 1L, 61R, and the left and right rear mounts 65L, 65R, affect the suspension member 30 It is mounted to the following: The electric unit 20 and the left and right front mounts 61L, 61R, left and right. Details on the rear-mount 65L and 65R will be explained later.

[0025] Next, the structure of the suspension member 30 will be described in detail with reference to Figures 3 and 4. ru.

[0026] As explained earlier with reference to Figure 1, the suspension member 30 is located on the left and right side members. Mu 31L, 31R, the rear first cross member 32, the second cross member 33, and the front It is a rectangular frame-shaped member that includes the front cross member 34.

[0027] As shown in Figures 3 and 4, the left side beam 31L consists of an upper portion 41L and a lower portion 51 It includes L.

[0028] The upper section 41L consists of the front section 42L, the central section 43L, the rear section 44L, and the rear end section 37L of the vehicle. It includes the front section 42L extending diagonally upward and rearward from the left front body mounting section 35L. This is the part that extends. The central part 43L is connected to the rear end of the front part 42L and curves upwards in a convex shape. The rear section is the part that extends horizontally toward the rear of the vehicle. The rear section 44L is the central section 43L This is the part that connects to the rear end and extends horizontally toward the rear of the vehicle to the rear body mounting section 36L. The left rear end of the vehicle 37L is, as explained earlier, located from the left rear body mounting part 36L to the vehicle. These are the parts that extend horizontally toward the rear on both sides.

[0029] As shown in Figures 3 and 4, the front section 42L, the central section 43L, and the rear section 44L are located outside the vehicle width direction. It has a channel-shaped cross-section with open sides. Also, the rear half of the front section 42L is open in the direction of the vehicle upwards. It has a grooved cross section. The front section 42L and the rear section 44L extend in the vehicle width direction. A plate-shaped rib plate 47 is provided.

[0030] The arms of the left suspension device 70L are connected to the upper parts of the front section 42L and the central section 43L. Arm connection sections 45L and 46L are provided. In addition, a cylindrical shape is located at the rear of the central section 43L. A rear mount attachment section 58L is provided. The rear mount attachment section 58L will be explained later. It is located behind the 50L space.

[0031] The lower left portion 51L includes a front end 52L, a rear end 54L, and a curved portion 53L. The front end portion 52L is the part that connects to the lower side of the front portion 42L of the upper portion 41L. End portion 54L is the portion that connects to the lower side of the rear portion 44L of the upper portion 41L. Curved portion 5 3L is the portion that curves downwards between the front end 52L and the rear end 54L. Curved portion 53 A cylindrical space 50L is left between the top surface of L and the bottom surface of the central part 43L of the upper part 41L. As shown in Figures 1 and 2, the space of 50L is such that the left drive shaft 25L is in the vehicle width direction. It is a hole that goes through. The front end 52L, the curved section 53L, and the rear end 54L are open on the underside of the vehicle. It has a grooved cross-section.

[0032] The right side beam 31R is symmetrical to the left side beam 31L, and the upper part 41R is The upper portion 41R includes the front portion 42R, the central portion 43R, and the rear portion. It includes the corner section 44R, the rear end of the vehicle 37R, the arm connection section 45R, 46R, and the rear mount A mounting portion 58R is provided. The lower portion 51R has a front end portion 52R and a rear end portion It includes 54R and a curved portion 53R. It also includes an upper portion 41R and a lower portion 51R. There is a 50R gap in between. The 50R gap is the width of the vehicle, with the right drive shaft having a 25R radius. It is a hole that goes straight through in that direction.

[0033] As shown in Figure 4, the front cross member 34 has a T-shaped cross section comprising a vertical plate and a horizontal plate. As shown in Figure 4, the left and right ends of the front cross member 34 have front mounting seats 3 8L and 38R are provided. As shown in Figure 3, the first cross member 32 is located at the rear of the vehicle. It has an open channel-shaped cross section. As shown in Figures 1 to 3, the second cross member 33 is The left and right lower sections 51L and 51R are connected to the lower surfaces of the rear ends 54L and 54R, respectively, on the left and right sides. The beams 31L and 31R are connected in the vehicle width direction. The second cross member 33 is open on the lower side of the vehicle. It has a channel-shaped cross-section with gaps.

[0034] Next, referring to Figures 5 and 6, we examine the left and right front mounts 61L and 61R, and the left and right rear mounts. This section provides details on the To65L and 65R models.

[0035] As shown in Figures 5 and 6, the left front mount 61L is made of rubber inside a cylindrical casing. The support member is fitted into the center of the rubber support member, which is the first load that receives the load. The receiving shaft 62L is fixed. The left front mount 61L is located at the rear of the vehicle, where the first load receiving shaft 62L is located. A front mount is provided at the left end of the front cross member 34 so as to be angled upwards. It is fixed to the mounting base 38L with bolts. As shown in Figure 5, the first load receiving shaft 62L The center line 63L passes diagonally to the rear of the vehicle, passing through the center 25C of the left drive shaft 25L. It extends upwards in the front-to-rear direction of the vehicle. The front mount mounting seat 38L is on the driveshaft It is located at the left end, forward and lower than the center 25C of the 25L. Therefore, the left front mount The first load-receiving shaft 62L is positioned so that it passes through the center 25C of the drive shaft 25L. The front cross member 34, which extends below the center 25C of the drive shaft 25L It is attached to the left end.

[0036] The right front mount 61R has the same structure as the left front mount 61L, and the first load-receiving shaft 6 2R is provided at the right end of the front cross member 34 so as to be tilted diagonally upward towards the rear of the vehicle. It is bolted to the front mount mounting seat 38R. Also, the first load receiving shaft 62R The center line 63R passes diagonally to the rear of the vehicle, passing through the center 25C of the right drive shaft 25R. It extends upwards in the front-to-back direction of the vehicle.

[0037] The left rear mount 65L, like the left front mount 61L described earlier, has a cylindrical shape. A rubber support member is fitted inside the housing. At the center of the rubber support member is The second load-bearing shaft 66L, which receives the load, is fixed. The left rear mount 65L is the second load The rear mount of the left side beam 31L is installed so that the heavy bearing shaft 66L extends in the vehicle width direction. It is fitted into part 58L. As shown in Figure 6, the rear mount attachment part 58L is dry At the rear of the 50L space through which the bushing 25L passes, the center of the drive shaft 25L is 2 It is positioned above 5C. Therefore, the left rear mount 65L is located behind the 50L space. Furthermore, the second load-bearing shaft 66L is located above the center 25C of the drive shaft 25L and is within the vehicle width. It is mounted on the left side beam 31L so as to extend in that direction.

[0038] The right rear mount 65R has the same structure as the left rear mount 65L, and the second load bearing shaft 66 R extends in the vehicle width direction, at the rear mounting section 58R of the right side beam 31R. It is fitted in place. Furthermore, as shown in Figure 5, the left and right rear mounts 65L and 64R are each second The load-bearing shafts 66L and 66R are mounted to the suspension member 30 so that they are coaxial. ru.

[0039] As shown in Figures 5 and 6, the electric unit 20 has left and right front mounts at the left and right ends of the lower front section. It comes with front mounting brackets 21L and 21R. Left and right front mounting brackets 21L and 21 R is fastened to the first load-receiving shafts 62L and 62R of the left and right front mounts 61L and 61R. The left and right front mounts 61 and 61R have left and right front mount brackets 21L and 21R, and The weight of the electric unit 20 and the drive shaft 25 are supported via load-bearing shafts 62L and 62R. Torque reaction force is input from L and 25R.

[0040] Additionally, the left and right rear mounting brackets 2 are located on the upper rear surfaces of the electric unit 20. 2L and 22R are provided. The left and right rear mounting brackets 22L and 22R are for the left and right sides. The rear mounts 65L and 65R are fastened to the second load-bearing shafts 66L and 66R. Mount 65L and 65R include left and right rear mounting brackets 22L and 22R, and a second load bearing shaft. The weight of the electric unit 20 is transmitted via 66L and 66R, and the drive shafts 25L and 25R A torque reaction force is input from there.

[0041] As mentioned earlier, the left and right front mounts 61L and 61R are located inside a cylindrical casing. A rubber support member is fitted to which the first load-receiving shafts 62L and 62R, which receive the load at the center, are fixed. Therefore, the front mounts 61L and 61R are the first load receiving shafts 62L and 62 The radial direction perpendicular to R has high load-bearing capacity and rigidity, but the extension of the first load-receiving axis 62L, 62R The load-bearing capacity and rigidity are low in the direction. Similarly, the left and right rear mounts 65L and 65R also bear the second load. The radial direction perpendicular to axes 66L and 66R has high load-bearing capacity and rigidity, but the second load-receiving axis 66L, The 66R has low load-bearing capacity and rigidity in the direction of extension.

[0042] As explained earlier, the left and right front mounts 61L and 61R are the first load receiving shafts 62L and 6 Since the centerlines 63L and 63R of 2R extend in the longitudinal direction of the vehicle, the vehicle width is perpendicular to these lines. The load capacity and rigidity in the direction have been increased. For this reason, the left and right front mounts 61L and 61R are As shown by arrows 91L and 91R in Figure 5, the electric unit 20 supports the load in the vehicle width direction. To hold.

[0043] On the other hand, the left and right rear mounts 65L and 65R are centered on the second load-receiving axes 66L and 66R. Since 7L and 67R extend in the vehicle width direction, the load capacity and rigidity in the longitudinal direction perpendicular to these lines are important. The size has increased. Therefore, the left and right rear mounts 65L and 65 are indicated by arrow 9 in Figure 5. As shown in 2L and 92R, the electric unit 20 supports the vehicle's longitudinal load.

[0044] Also, as shown in Figure 6, the center line 63 of the first load-receiving shaft 62L of the left front mount 61L L extends through the center 25C of drive shaft 25L. Drive shaft 25 The torque reaction force of L is along the center line 6 of the drive shaft 25L, as shown by arrow 93 in Figure 6. This is the rotational moment around 7L. Therefore, the left front drive shaft from 25L The direction of the torque reaction force input to the 61L is as shown by arrow 94 in Figure 6, for the first load. This is perpendicular to the center line 63L of the heavy bearing shaft 62L. Therefore, the left front mount 61L It can withstand the large torque reaction force input from the 25L drive shaft. .

[0045] Furthermore, the left rear mount 65L has the center line 67L of the second load bearing shaft 66L as the drive shaft It extends in the vehicle width direction parallel to the center 25C of the 25L shaft. Therefore, the drive shaft The direction of the torque reaction force input from 25L to the left rear mount 65L is indicated by arrow 96 in Figure 6. As shown, the direction is perpendicular to the center line 67L of the second load-receiving axis 66L. Therefore, the left The rear mount 65L, like the front mount 61L, is input from drive shaft 25. It can withstand the large torque reaction force.

[0046] Furthermore, the left front mount 61L has a downward-facing element in the direction of gravity, as indicated by arrow 95 in Figure 6. The weight of the electric unit 20 is added to it. The direction in which this weight is added is perpendicular to the first load-receiving shaft 62L. It is slightly inclined in a perpendicular direction, not in the direction of intersecting. Therefore, the front mount 61 The load-bearing capacity and rigidity of L in the direction in which its own weight is applied are as follows: It is less rigid than conventional drive systems such as engines. In addition to being a quantity, the load due to its own weight is smaller than the load due to the torque reaction force, so the front mount 6 1L can support the weight of the electric unit 20.

[0047] Furthermore, the left rear mount 65L has a downward-facing element in the direction of gravity, as indicated by arrow 97 in Figure 6. The weight of the electric unit 20 is added. The direction in which this weight is added is perpendicular to the second load-receiving shaft 66L. This is the direction. For this reason, the rear mount 65L supports the weight of the electric unit 20. It is possible.

[0048] The above describes the load on the electric unit 20 by the left front mount 61L and rear mount 65L. As explained regarding the support, the electric unit is mounted on the right front mount 61R and rear mount 65R. The load support for the 20 is provided by the electric unit with a left front mount 61L and a rear mount 65L. Since the load support is the same as that of the 20mm section, the explanation will be omitted.

[0049] As explained above, the suspension member assembly 80 is front mount 61L, 6 Drive shaft perpendicular to the first load-bearing shafts 62L and 62R, which have a large load capacity of 1R. Torque reaction force is added from the 25L and 25R, so the front mounts 61L and 61R It can adequately withstand the reaction force. Also, the weight of the electric unit 20 contributes to the torque reaction force. Because it is smaller in comparison, its own weight is relative to the centerlines of the first load-bearing axes 62L and 62R and the axes 63L and 63R. Even if the force is applied in a direction deviating from the orthogonal direction, the front mounts 61L and 61R can support the weight. Therefore, the front mounts 61L and 61R and the rear mounts 65L and 65R are positioned horizontally. In contrast, even when arranged in a slanted line, the front mounts 61L and 61R are electric unit 2 It can adequately withstand the weight and torque reaction force of 0.

[0050] The left and right front mounts 61L and 61R are oriented in the direction of the left and right first load-receiving axes 62L and 62R and the vehicle. Because the width directions are perpendicular, the left and right front mounts 61L and 61R have high rigidity for the electric unit It can support a load in the vehicle width direction of 20. Also, the left and right rear mounts 65L, 6 The direction of the left and right second load-bearing axes 66L and 66R of 5R is perpendicular to the vehicle's longitudinal direction, so the rear The 65L and 65R models support the vehicle's longitudinal load with high rigidity. This allows for the support rigidity of the electric unit 20 in the vehicle width direction and the vehicle longitudinal direction to be This can be ensured. Furthermore, this helps to suppress the delay in steering response.

[0051] Also, the direction of the left and right second load receiving axes 66L and 66R of the left and right rear mounts 65L and 65R. Because the vehicle's vertical direction is perpendicular, the rear mounts 65L and 65R have high rigidity and the electric unit It can support the weight of the T20.

[0052] In the above explanation, the first load-receiving axes 62L and 62R of the left and right front mounts 61L and 61R The centerlines 63L and 63R extend through the center 25C of the drive shafts 25L and 25R. Although I explained it as being present, it is not limited to this. The left and right front mounts 61L and 61R are, The centerlines 63L and 63R of the load-bearing axes 62L and 62R are tilted diagonally upward towards the rear of the vehicle. If they are positioned as such, the center of drive shafts 25L and 25R will be slightly offset from the center 25C. It's okay to be there. [Explanation of Symbols]

[0053] 10 Rear unit, 11L, 11R Rear side member section, 12L, 12R Rear hose Eel house section, 13 Rear floor section, 14L, 14R Crash box, 15L, 15R Coil spring seat, 16 Rear bumper reinforcement, 17 Center unit , 18 battery packs, 20 motor units, 21L, 21R front mounting brackets, 22L, 22R rear mounting bracket, 30 suspension member, 31L, 31R Side beam, 32 First cross member, 33 Second cross member, 35R Front body section Mounting section, 36L, 36R Rear body mounting section, 37L, 37R Rear end of vehicle, 38L, 3 8R Front mount mounting seat, 41L, 41R Upper part, 42L, 42R Front part, 43 L, 43R center section, 44L, 44R rear section, 45L, 45R, 46L, 46R rear Connection section, 50L, 50R Space, 51L, 51R Lower section, 52L, 52R Front end 53L, 53R curved section, 54L, 54R rear end, 58L, 58R rear mount attachment. Front mount, 61L, 61R; Front mount, 62L, 62R; First load bearing shaft, 63L, 63R 67L, 67R Centerline, 65L, 65R Rear Mount, 66L, 66R Second Load Receiving shaft, 68, 69 Mounting member, 70L, 70R Suspension device, 72L, 72R Coil Springs, 80 suspension member assemblies, 100 vehicles, 200 car bodies.

Claims

1. A suspension member attached to the rear of the vehicle body, The electric unit mounted on the suspension member, The electric unit is supported by left and right front mounts and left and right rear mounts. A suspension member assembly, The aforementioned left and right rear mounts are attached to the upper left and right rear of the suspension member. Re, The left and right front mounts are configured such that the first load-receiving axis is tilted diagonally upward and towards the rear of the vehicle. It is attached to the lower left and right sides of the front of the suspension member. A suspension member assembly characterized by the following.

2. A suspension member assembly according to claim 1, The suspension members are located on both sides of the vehicle and extend in the longitudinal direction of the vehicle. Includes a side beam and a front cross member that connects the left and right side beams in the vehicle width direction. It has a square frame shape, The left and right side beams have holes through which the drive shaft connected to the electric unit passes. It has, The left and right rear mounts are located behind the holes and above the center of the drive shaft. On the other hand, the second load-receiving shaft is attached to the left and right side beams so as to extend in the vehicle width direction. The left and right front mounts are positioned such that the first load-bearing shaft passes through the center of the drive shaft. The left and right sides of the front cross member below the center of the drive shaft extend in that direction. It is attached to the end of, A suspension member assembly characterized by the following.

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