JP3530973B2 - Suspension member - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle suspension member. 2. Description of the Related Art Conventionally, in a four-wheel drive or rear-wheel drive type automobile having a differential gear on the rear wheel side of the vehicle, a differential gear box (hereinafter referred to as a differential gear box) is supported. , the suspension member attaching part of the members constituting the suspension, there is shown in FIG. 7 or FIG. 8, for example. [0003] In other words, the suspension member 5 of FIG. 7
1 is fixed to the vehicle body floor, and upper links 52, 52 and lower links 53, 53 which constitute a part of the suspension are supported on both sides in the vehicle width direction, respectively. The suspension member 51 has an opening 5 in a state of being drilled in the lower center of the suspension member 51.
1a is provided, and a lower portion of the opening 51a is covered with a lower end 51b of the suspension member 51. The differential gear box 54 is accommodated in the opening 51a. The differential gear box 54 includes the suspension member 5
1 is fixed to the suspension member 51 via a differential mount bracket 55 fixed to the bolt. A propeller shaft 56 and left and right rear drive shafts 57a and 57b are connected to the differential gear box 54 (May 10, 1994, Toyota RAV4 L, Toyota RAV4J repair manual, service edition of Toyota Motor Corporation, pages 8-17). reference). In the vehicle body provided with the above-described suspension member 51, when the vehicle body is jacked up using a garage jack at a factory or the like, the jack is directly brought into contact with the lower end portion of the differential gear box 54. [0004] In addition, the suspension member 61 of FIG. 8
Is for supporting the upper links 62, 62 and the lower links 63, 63 on both sides in the vehicle width direction in the same manner as described above, and the opening 61a is formed in a state of being drilled at the lower center. It is provided and is covered with the lower end 61b of the opening 61a. A differential gear box 64 is provided in the opening 61a.
Are accommodated, and the differential gear box 64 is directly fixed to the suspension member 61. The suspension member 61 is formed relatively firmly, and when performing the above-described jack-up operation, the jack J is brought into contact with the lower end portion 61b covering the lower portion of the differential gear box 64 as illustrated. Is possible. [0005] However, in order to reduce the cost by sharing the above-mentioned suspension members 51 and 61 with members, the suspension members 51 and 61 are driven by a vehicle without a drive shaft and a differential gear at the rear, that is, by driving only two front wheels. When used in a front-wheel drive type vehicle that transmits power (hereinafter, referred to as a two-wheel drive type vehicle), the following problems occur. That is, both of them are hole-shaped openings 51a, 61 for accommodating the differential gear boxes 54, 64.
a lower end portion 51 provided with a and covering the lower portions of the openings 51a and 61a.
Since the structure has b and 61b, the amount of downward projection at the lower part of the vehicle body is large, and the minimum ground clearance is sacrificed. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is commonly used in two-wheel drive type and four-wheel drive type vehicles without sacrificing the minimum ground clearance when used in two-wheel drive type vehicles. It is an object of the present invention to provide a suspension member capable of performing the following. [0007] In order to solve the above-mentioned problems, according to the present invention, a front wall 5 connected to an upper end and a rear wall 5 are connected.
A suspension member 1 having a wall 6
The left and right sides of the side are provided with support parts protruding downward.
A concave portion is formed in the center of the lower end to recede toward the upper end.
The support portion is opened downward by the front wall and the rear wall.
And a differential gear box
Can be received with its lower end protruding downward.
On the other hand, the support portion has a space between the front wall and the rear wall.
Supports the inserted differential gearbox
The upper left and right ends of the differential mount bracket
The lower end of the recess is closed across the recess, and
Jack-up brackets that make up the jack-up point
Common bolts that pass through the bolts that
Mounting holes are provided for each of the differential mount brackets.
And the jack-up bracket are selectively
It was assumed to be attached . In such a configuration, by attaching the jack-up bracket to the support portion, the differential gear box can be fixed, that is, used in a four-wheel drive type automobile. On the other hand, when used in a two-wheel drive type automobile, a jack-up bracket is attached to the support portion, so that a jack-up point is provided on the lower surface side of the vehicle body at the same position as when a differential gear box is attached. Further, at this time, a concave portion is provided between the support portions, the concave portion has a lower opening shape capable of receiving the differential gear box with its lower end portion protruding downward, and the jack-up bracket is provided with a support portion. Since the lower end side of the concave portion is closed across the concave portion opened between them, the lower end of the jack-up bracket does not protrude significantly downward from the support portion. Further, the supporting portion, wherein since differential mount bracket and a common mounting hole for mounting said jack-up bracket is provided, when providing a separate structure for mounting the jack-up bracket to the support As compared with the above, the processing cost of the suspension member is reduced. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a state in which a suspension member 1 according to the present invention is used as a rear suspension member of a four-wheel drive type automobile. A pair of side members 3 and 3 extending in the vehicle front-rear direction on both sides in the vehicle width direction and a cross member 4 provided so as to connect them are fixed to the lower surface of the floor 2 constituting the vehicle body. The suspension member 1 is fixed to both the pair of side members 3 and 3 and the cross member 4. The suspension member 1 has a front wall 5 and a rear wall 6 as shown in FIG. 3, the front wall 5 and the rear wall 6 are connected at the upper end side, and the upper end is a pair of side members 3, 3
And to the cross member 4. The left and right portions of the lower end of the suspension member 1 protrude downward, support portions 8 are provided, and a concave portion 7 is provided at a central portion of the lower end to retreat upward. Accordingly, the lower wall has a shape in which the front wall 5 and the rear wall 6 form the lower opening supporting portions 8. The suspension member 1 includes upper links 9 and 9, which are part of the components of the suspension disposed on the left and right sides of the support portions 8, 8, respectively, and a lower link 1.
0 and 10 are supported respectively. The front wall 5 and the rear wall 6 serving as the support portions 8, 8 are provided with mounting holes 11a, 11b (see FIG. 3), respectively. 11b and 11b are arranged on both sides separated from each other with the recess 7 therebetween. Each of the support portions 8, 8 has a corresponding one of the mounting holes 11a, 11
The differential mount bracket 12 is attached using b. As shown in FIG. 2, the left and right ends of the differential mount bracket 12 protrude downward, the front wall 13 and the rear wall 14 are connected at the protruding left and right lower ends 12a and 12b, and the center is rearward. Recess 13 that recedes to the side
a and 14a are formed in a substantially U-shape when viewed from the front and open downward. The left and right lower ends 12a and 12b where the front wall 13 and the rear wall 14 are connected to each other are
Holes through which bolts 23 for supporting and attaching the differential gear box 21 are inserted and weld nuts 23a, 2
3a is welded. Further, as shown in FIG. 3, the front wall 1 is provided on the left and right upper end portions 12c and 12d of the differential mount bracket 12 constituted by the front wall 13 and the rear wall 14.
3 and a pipe member 15 penetrating through the rear wall 14, and a cylindrical spacer 17 fitted inside the pipe member 15 through an anti-vibration rubber 16.
Are provided, respectively. The differential mount bracket 12 has the left and right upper ends 12c, 12d inserted between the front wall 5 and the rear wall 6 of the support portions 8, 8 of the suspension member 1, and has the mounting holes 11a, 11b and the spacer. It is fixed to the support portions 8 by bolts 19 inserted into the nuts 17 and nuts 20 screwed to the bolts 19. The suspension member 1 has a differential.
Differential gear box 21 via mount bracket 12
Is attached. Differential gear box 21 has a mounting bracket portions 22 protruding to the left and right integrally with the gear box 21, which lower end portions of the left and right differential mount bracket 12 by bolts 23, 23 12
Weld nuts 23a, 23a provided on a, 12b
Is fixed to the suspension member 1. In such a state, as shown in FIG. 1, the jack J of the vehicle body can be jacked up using a garage jack at a factory or the like by directly contacting the jack J with the lower end of the differential gear box 21. FIG. 4 is a view showing a state where the above-mentioned suspension member 1 is used as a rear suspension member of a two-wheel drive type automobile. The suspension member 1 has a pair of side members 3 and 3 and a cross member 4 on the lower surface side of the floor 2 as in the case shown in FIG.
The upper links 9, 9 and the lower links 10, 10 of the suspension are supported on both sides of the support portions 8, 8, respectively. The support portions 8, 8 of the suspension member 1 are formed by using the mounting holes 11a, 11b described above.
The jack-up bracket 31 is attached so as to close across the lower end of the concave portion 7 between them. The jack-up bracket 31 includes a front wall 32 as shown in FIG.
And a rear wall 33. The front wall 32 and the rear wall 33 are connected at their lower ends, and project downward at the center of the lower end in the left-right direction (longitudinal direction). Are formed in a substantially trapezoidal shape. The left and right upper ends 31b and 31c formed by the front wall 32 and the rear wall 33 include:
As shown in FIG. 6, cylindrical spacers 34 penetrating the front wall 32 and the rear wall 33 and fixed to the front wall 32 and the rear wall 33 are provided. In the jack-up bracket 31, similarly to the above-described differential mount bracket 12, the left and right upper ends 31 b, 31 c have the bolts 19 inserted into the mounting holes 11 a, 11 b of the support portions 8, 8 of the suspension member 1 and the spacer 34. Are fixed to the support portions 8 by a nut 20 screwed thereto. In such a state, the jack is brought into contact with the projection 31a of the jack-up bracket 31 so that the garage jack can be used to jack up the vehicle body at a factory or the like. In addition, the space between the support portions 8, 8 of the suspension member 1 is a downward opening having a concave portion 7 that can receive the differential gear box 21 with its lower end protruding downward as shown in FIG. In addition, since the jack-up bracket 31 closes across the lower end side of the concave portion 7 between the support portions 8, 8, the lower end of the jack-up bracket 31, that is, the convex portion 31 a is separated from the support portions 8, 8. It does not protrude significantly downward. Therefore, in the suspension member 1 shown in the present embodiment, the differential mount bracket 12 and the jack-up bracket 31 are selectively attached to the support portions 8, 8 so that a four-wheel drive type and a two-wheel drive type are provided. When used in a two-wheel drive type vehicle, the jack-up bracket 31 allows the differential gear box 21 on the underside of the vehicle body to be used.
The jack-up point can be provided at the same position as when the is mounted. In addition, even in this case, the convex portion 31a of the jack-up bracket 31 does not protrude significantly downward from the support portions 8,8. Therefore, it is possible to achieve the common use of the two-wheel drive type and the four-wheel drive type vehicle without sacrificing the minimum ground clearance when used in a two-wheel drive type vehicle. In the suspension member 1 described above, the differential mounting bracket 1
2 and the jack-up bracket 31 are provided with common mounting holes 11a and 11b.
The processing cost of the suspension member 1 is reduced as compared with the case where a structure for attaching the jack-up bracket 31 to the support portions 8 is separately provided. Therefore, the cost can be further reduced while sharing the suspension member 1. As described above, in the suspension member of the present invention, by selectively attaching the differential mount bracket and the jack-up bracket to the support portion, the suspension member can be switched between the four-wheel drive type and the two-wheel drive type. It can be used in both cars, and when used in a two-wheel drive type car, a jack-up bracket is used to set the jack-up point on the underside of the body at the same position as when the differential gear box is attached In this case, the lower end of the jack-up bracket does not protrude significantly downward from the support portion. Therefore, it is possible to achieve the common use of the two-wheel drive type and the four-wheel drive type vehicle without sacrificing the minimum ground clearance when used in a two-wheel drive type vehicle. Further, the support portion, by a common mounting hole for mounting the differential mount bracket and jack-up bracket provided, compared with the case of separately providing a structure for mounting the jack-up bracket to the support In addition, the processing cost of the suspension member is reduced. Therefore, it is possible to further reduce the cost while sharing the suspension member. [0020]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a state in which a suspension member according to an embodiment of the present invention is used in a four-wheel drive type automobile. FIG. 2 is an external perspective view showing a differential mount bracket 12. FIG. FIG. 3 is an enlarged sectional view taken along line AA of FIG. 1; FIG. 4 is a view showing a state where the suspension member of FIG. 1 is used in a two-wheel drive type automobile. FIG. 5 is an external perspective view showing a jack-up bracket. FIG. 6 is an enlarged sectional view taken along the line BB of FIG. 4; FIG. 7 is an exploded perspective view showing a conventional suspension member.
It is. FIG. 8 is a view showing another conventional suspension member.
You. [Description of Signs] 1 Suspension member 2 Floor 5 Front wall 6 Rear wall 7 Depression 8 Support portion 11a Mounting hole 11b Mounting hole 12 Differential mount bracket 21 Differential gear box 31 Jack-up bracket 31a Convex portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-336108 (JP, A) JP-A-2-59023 (JP, U) JP-A-4-52978 (JP, U) (58) Field (Int. Cl. ⁷ , DB name) B62D 21/00 B62D 25/08

Claims (1)

(57) Claims 1. A front wall 5 and a rear wall 6 connected at an upper end side.
Suspension member 1 having a support portion 8 projecting downward at left and right portions on a lower end side;
8 is provided, and retreats to the upper end side in the central portion on the lower end side
A concave portion 7 is formed, and the supporting portions 8, 8 are lowered by the front wall 5 and the rear wall 6.
The differential gear is formed in an opening shape and
With the lower end of the box 21 protruding downward.
On the other hand, the support portions 8, 8 are inserted between the front wall 5 and the rear wall 6 while being supported.
To support the differential gearbox 21
Left and right upper ends 12 of the differential mount bracket 12 to be held
c, 12d, or the lower end of the recess 7
Close and close the jack up point
Left and right upper end portions 31 of jack-up bracket 31 to be formed
b, 31 c
Holes 11a and 11b are provided, respectively, and the differential mount bracket 12 and the jack
A suspension member to which a mounting bracket 31 is selectively attached .