JPS6261809A - Strut type suspension device for vehicle - Google Patents

Abstract

PURPOSE:To widen the vehicle interior space by arranging the center axis of an outer cylinder at the rear part of a vehicle for the center of a wheel and arranging the center axis of a coil spring so that the upper part over the vehicle is inclined rearward for the center axis of the outer cylinder, thus sufficiently securing the allowable stroke quantity of a wheel. CONSTITUTION:The upper part of a strut 13 is inclined a little rearward for a vehicle, and the strut 13 is arranged so that the center axis C1 of the strut 13 passes through the point P1 shifted rearward by L from the center C of a rear wheel 11, viewed from the side surface of the vehicle. Further, the center axis C2 of a coil spring 34 is arranged so as to pass through the center or the vicinity of the center of the rear wheel, viewed from the side surface of the vehicle, and the center shaft C1 of the coil spring 34 over the vehicle is a little inclined rearward for the center axis C1 of the strut 13. Further, the center axes C1 and C2 are arranged so that the upper edge of the strut 13 is a little inclined inwardly for the vehicle, viewed from the back surface of the vehicle. With such constitution, the allowable stroke quantity of wheel is increased, and the vehicle interior space can be widened.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a suspension system for both tables and tables, and more particularly to a suspension system for use with struts.

Conventional technology This type of suspension suspension system is known from the service bulletin No. 491 "Blue Bird" published by Nissan Motor Co., Ltd.
(Issuance date: October 1982) F, F (
Front engine front drive] There is a rear @@ rack device for cars. As shown in FIG.
A pair of front and rear parallel links 2.3 as left and right members and a radius rod 4t as front and rear members are connected to the outer vehicle body side so as to be movable up and down. Struts placed in the same manner 3't"
It is connected to the vehicle body side through 3 and 6. This rod 5 has an outer cylinder 5a whose lower end is fixed to the spindle l, and a piston rod 50 which is housed in the outer cylinder 5 and which protrudes from the upper end of the outer cylinder 5a so as to be slidable. The piston rod 5b is provided with a shock absorber (not shown), and is attached to the main body with a steel layer through a mounting incillator 6t serving as an upper end attachment portion of the piston rod 5b.

Reference numeral 7 denotes a coil spring disposed surrounding the outer periphery of the strut 5, and this coil spring 7
The spring seat 8 is compressed between a lower spring seat 8 that is fixedly installed in the spring seat 8a and an upper spring seat 8a that is installed on the vehicle body side (not shown in FIG. 5).

By the way, such a conventional rear transport rack device, as shown in FIG. Zeng, outer cylinder 5
The center @C1 of the center thin case rest rad 5 of a is arranged so that the center Ck, A of the table can 9, and the center @c of the coil spring 7 is also aligned with the center @Cs]Lw /1 is arranged so that it passes through the center C.

That is, the center of the strut 5 @ C1 is jli when viewed directly from the vehicle
By passing through the center of the L wheel Ci, a load in the n direction is prevented from acting on the piston rod 5b during the vertical stroke of the vehicle @9, and the center thin C8 of the coil spring 7 is prevented.
By passing the Tanehata Center C meeting with Arashi Ryo 91 sides, IIL
The load at the time of the wheel 9 stroke is effective <Coil spring 7
It is designed to act on

Incidentally, generally, the rear seat 8 is located above the rear wheel suspension system as shown in the eighth factor, and the upper end portion of the strut 5 is arranged behind the seat back of the d rear seat S. Therefore, the rear seat position 8 is i.
The rear space within the L compartment is determined by the position of the struts 5.

Problem to be Solved by the Invention Therefore, in order to move the rear seat 8t rearward in order to expand the rear space as much as possible, the upper strut 5 is It is conceivable to make the section tilt toward the rear of the vehicle. However,
As shown in the broken part of the diagram, when the slope of the strut 5 is increased, the stroke tolerance t l t of the transport 9 becomes the stroke ff '4 ml l + The struts become smaller and the ride comfort deteriorates by a large amount. Therefore, the struts 5
One problem is that it is not possible to increase the size of the Mt assembly, making it impossible to further expand the interior space.

Therefore, the present invention provides a strut type single-wheel suspension that can expand the indoor space while ensuring sufficient IL@stroke tolerance i1! i[lII! Our goal is to provide the opportunity.

Means for solving the problem Ninthly, in the dual-use strut of the present invention, there is an outer cylinder fixed to the IL support member, and an outer cylinder inside the outer cylinder. A shock absorber in which a piston rod protruding from an outer cylinder is elastically supported as a single body, and one end of the outer cylinder outer periphery 111-4 is supported by the outer cylinder, and the other end is supported by the vehicle body side. A coil spring and a metal fitting are provided, and the center thin part of the outer cylinder is arranged on the rear side of the vehicle with respect to the center of the can, and the center axis of the coil spring is both directly upwardly inclined rearward with respect to the center axis of the outer cylinder. It is configured by arranging it in a row.

In the strut-type one-wheel suspension chestnut device of the present invention, due to the groove bottom having a greater function, the center thinness of the outer cylinder is the center of the t-wheel L11)j! Ll
d4 The strut itself can be moved towards the rear of the vehicle by being placed in the rear seat, and the rear seat can also be moved towards the rear. 19. Like this? When moving backward, t is achieved by moving the strut backward without increasing the amount of inclination of the strut, so that the allowable stroke amount xm is not inadvertently eaten. In addition, by arranging the coil spring so that both upper sides of the coil spring center Stt are inclined backward #J with respect to the central axis of the outer cylinder, the stroke 2
tt-rearward 1ife L7tAs a result, =m stroke ・During the movement, a moment is generated in the coil spring that opposes the moment in the direction of the force acting on the piston rod, causing the force n' of the piston rod 1g'1
It can be stopped or greatly reduced.

Examples are as follows: Book': J! An embodiment of the proposal will be explained in detail based on the facts.

That is, Figures 1 and 3 show a strut-type military suspension system dlO, which is an embodiment of the present invention, and 11 is Jt1! ”
13 is a strut which is rotatably supported by the axle case 12 as a member with IE, 13 is a strut provided between the front GD axle case 12 and the single body 14 so as to be oriented upwardly and downwardly. 15 is the axle case. An arm 17 is provided between 12 and the main body member 16 between the left and right sides of the vehicle, and 17 is a stabilizer having a function as a radius rod connected to the axle case 1i2 on both front sides of the vehicle body. The drive shaft 1B is rotatably supported by the axle case 12. It is now ready to be used.

The shock absorber (not shown) is housed and fixed in the outer cylinder 19, so that the piston rod 20 of the shock absorber protrudes slidably from the upper end of the outer cylinder 19. There is. The lower part of the outer cylinder 19 is connected to the front dC axle case 12 with a bracket l-21i valve.
Bolt 22. The nut 23 is fixed GA, and the upper end of the front piston rod 20 is the mount insulator 2ay.
I'm looking at the car body 14. The j-mount incerator 24 is attached to the upper small diameter portion 20a of the piston rod 20*l! ! ! Upper and lower rubber 25.261
M, these rubbers 25 and 26 are attached to a single body 14111 with bolts 29, with an intermediate plate 27 sandwiched between them, and a lower plate 2B that collapses under the lower rubber 26. Natsuto 3
It is supported by being fixed at 0.

Incidentally, the upper and lower rubber nuts 311a apply a preload in the compression direction to the piston rod 20 so that they are fixed to the piston rod 20.

An upper spring seat 32 is fixed to the lower side of the lower plate 28, and a lower spring seat 33 is fixed to the outer cylinder 19.
A coil spring 34 that surrounds the outer periphery is contracted between the spring seats 32 and 33, and the shield 14 is suspended over the single body 11 by the spring 34.

A bumper rubber 35 is provided on the lower side of the upper spring seat 32, and the upper end of the outer cylinder 19 is brought into contact with the lower part of the bumper rubber 35, thereby preventing excessive pounding. ing. 36
is a dust cover that connects the lower end of the bumper rubber 35 and the outer periphery of the upper end of the outer tube 19.

By the way, as shown in the side view of Figure J1, the strut 13 has an upper part inclined slightly toward the rear of the vehicle, and the center 4@C1 of the strut 13 is on the Arashi birch surface and the rear center C section is on the rear side of the strut 13. It is located at a distance L from the rear of the vehicle that connects to the point Psk. - 10,000, said coil spring 34
The central axis C3 of the rear strut 34 passes through the rear center C or the vicinity of the center C when viewed from the side. Therefore, the center Ct of the coil spring 34 of the former strut The upper part of the vehicle is inclined backward with respect to the center of lj @Ct. - Also, in this embodiment, as shown in the rear view of FIG. 2, the stock 13 has its upper end pointing toward the inside of the vehicle even when viewed from the rear of both cars. −? Slanted, center @C1
The center cap 01 is arranged so that the lower extension of the rear wheel 11 passes through the grounding point (not shown) of the rear wheel 11 or the vicinity of this grounding point. It has become. 19. The center of coil spring j4 @C8 is centered at the front 1ldP, and the center of coil spring j4 is directed outward from the vehicle.
The coil spring 34 is arranged so as to pass through nine points P, and the coil spring 34 has a larger tI than the strut 13
It has been installed.

The arm 15 is located outside the body 9i1 as shown in FIG.
1 (lower part 1) is formed into a bifurcated shape sandwiching the center C5t of the rear wheel 11, and each tip of the bifurcated portion is a pair of front wheels.

It is connected to the C axle case 12 through rear rubber bushes 40, 41, and the base end of the arm IS that is located inside the vehicle body is also connected to the vehicle body member 16 via a base rubber bush 4JQ. That is, each rubber bush 4
0.41.42 is usually 4n a
, 41 a , 42 a , outer cylinder 40b , 4111
'1.42b Rubber 40 loaded between these two
CM41CA42C is being stolen. ! II.
Shunman rubber bushings 411.41 are arranged in the arm 15 with an inverted σ-shape in cross section, and the outsides of each n1 19i40b,
41b is fixed to the axle case 12, and
Each inner cylinder 4116, 416 has a bolt 43, 44 and a bolt 45.4 passed through between the 91 walls of the arm 15.
It is supported by the arm 15g11 via 6'i.

-10,000, the base rubber bush 4J7'i cross section is inverted U-shaped and is arranged at the front body member 16 yen, outer 1!142
+) is fixed to the arm 15, and a circle [42a
is the bolt 4 passed through the 91 barrier of the single member 16.
7 and oak) 4g'i through vehicle body member 16i111
It is supported by n. In addition, the arm l 5r! % *As the flag 11 bounces and rebounds, the base rubber bush 42i is made to explode vertically. Ten thousand,
Both YIA parts of the vehicle body member 16 are inclined upwardly of the vehicle so as not to obstruct the swinging of the arm 15, as shown in Fig. 2, and the sea part thereof is fixed to the main body 149m via the pole 49't-. It is now possible to do so.

Incidentally, the rear rubber bush 41 is provided with an adjustment mechanism 52 for changing the relative positions of the cylinder 41a and the arm 15 between the left and right sides of the arm.

That is, this liW mechanism 52 has both sides 11 of the arm 15.
1Wl: nl pairs of cam guides 53, 54 provided at the outer edge
and 61 pairs of cams 55.5 which are rolled integrally with the bolt 44 or are guided by the cam guides 5d and 54.
It is composed of 8 and 8. As shown in FIG. 3, the cam guides 53 and 54 are formed of bent plates on both the left and right sides, and the cams 55 and 56 are placed closely between the bent pieces.
ing. The cams 55 and 56 are 1
The through holes 57, 58 of the bolts 44, which are formed at 13 il @, are elongated holes that are lowered in the same way on both left and right sides, and the bolts 44 and the cams 55, 56'.
By rotating, the bolt 44 can move laterally within the through holes 57 and 58. Direction, above 1
The pair of cams ss and S6 are aligned with the bolt 44 with the same phase t.

The stabilizer 17 has an intermediate portion g17a that is oriented between the left and right sides of the storm, and a bent portion 17D that is oriented 1Ft between the front and rear wind directions.
The whole is formed into a substantially inverted U-shape by n1 said intermediate part 1
Both ends of 7a are rotatably attached to the adult member 16 via rubber bushings 5nt for supporting one body, and the front 1id bent portion 171'l end is attached to the axle case 12 of 1TII via m connecting rubber bushings 517. I'm wearing it. Therefore, the intermediate portion 17a is twisted as the rear wheel 11 bounces and rebounds.

In addition to the roll rigidity of the suspension, which is the original function of the stabilizer 11, the bent portion TUB of the stabilizer 17 functions as a radius throttle and a radial stroke, and regulates the distance between IIL and front of the suspension.

Reference numeral 60 denotes a differential gear, and the differential gear 60 has its rear portion supported by the vehicle body member 16 via a rubber bushing 61t, and both front end portions of the IL are connected to the front member 62 by bolts 63. It is fixedly installed via a nut 64f. In addition, the original front member 62 is a vertical rubber pusher $651i whose both ends are oriented upwardly and downwardly of the vehicle.
The valve is supported by the vehicle body 14. By the way, the rubber ptsushi 3-61 of the Differential Gear 60 Kori -Rube, which is the above, is in the inner cylinder 61a, 1II6 L B and Ko N, etc. 11 (f811-1 is a bolt 66 attached to the housing 60a of the differential gear 60).
The inner surface 81a is fixed to the bracket 67 to be fixed, and the bolt 6g and nut 7111j are inserted into the bracket 6B, which has a U-shape in plan and is fixed to the vehicle body member 16.
- It is designed to be installed through the By the way, 1
A cover body 71t is attached to the outer periphery of the outer cylinder 81i) opposite to the mounting side of the bracket 67, and this mass body 71
This suppresses the level of loss and movement of the outside 11161b.

FIGS. 4, 5, and 6 show a strut type vehicle suspension system 10a according to another embodiment, in which the same components as those in the previous embodiment are given the same reference numerals and redundant explanations will be omitted.

That is, in this embodiment, as in the previous embodiment, the rest (13) is 1. As shown in the side view of FIG. It is placed so that it moves backward by L from the center C and passes through nine points Ps. The coil springs 3 and 4 are tapered in shape with a diameter increasing at the bottom.
The coil spring 34 is tilted relative to the strut 13 as in the previous embodiment, and the center of n1 @C1 is at the rear @ll.
Center t-1! ! It is placed in such a way that it is the first place to be seen.

By the way, the mount insier 1i4 is supported on the upper end t'' side of the stock 13.

The upper and lower rubbers 25a and 26a have the mounting plate 1 between them.
j7at-fl can be installed and molded in one piece.

Lower rubber 25 a s J 6 a Upper metal failure 27
1), and a lower plate 28a holding a bumper rubber 35ii is located below the lower rubber 26a.
1. The peripheral edges of each of the lower plate 28a and the breaking plate 27b are connected to bolts 29. It is designed to be mounted on the vehicle body 14 with a nut of 30t-fP. In addition, all lower plates 28
A also functions as an upper spring seat, and a coil spring 34 is press-fitted on the lower side of the circumference of the lower plate 28a via a rubber 28b.

(In this example, the stabilizer 80 has a connecting rod 81t at the end and is connected to the arm 15. The stabilizer 80 has a connecting rod 81t connected to the arm 15, and is nutted in a manner similar to the above.The front and rear support of the suspension is provided by a dedicated radius rod 8. That is, the radius rod 82 is arranged so as to point in the longitudinal direction of the vehicle, and the rear end of the radius rod 82 is connected to an axle case (not shown) through a rubber bush 83. At the same time, the vehicle front end of the radius rod 881 is similarly fitted with a rubber button s.
+tjr'' to be connected to the single unit 14.

19. Even in this embodiment, a cam guide 53 is attached to the rear rubber bush 41 connected to the arm 157 and the axle case.
．． 54. Cams 55, 56'i @ nine-tone kidney mechanisms 5J are provided, and the cam guides 53, 54 are cut and formed integrally from the ms of the arm 15.

In the ward, the D7 allencial gear 60 is the 5j! Similar to the embodiment, it is attached to the vehicle body member 16 and the previous member 62, and the rear end of the differential gear 60 has a mass body 7 on the outside @ 61e1.
'l via I! II Bracket 6B of 1 member 16
It is attached to the fl, 6. In this embodiment, both ends of the previous member 62 are rubber books oriented in the longitudinal direction of the vehicle! 85′! ! - It is designed to be attached to the acid body 14 side through.

As explained above, in the strut-type cross-section rack device 10.10a of this embodiment, the struts 13 are located at the middle center of the struts 13 @c and ram center CL on both rear sides when viewed from the side of the vehicle. At a certain point, as shown in the schematic diagram in Figure 7, the stock) 1
The mounting position t1 of No. 3 can be moved to the rear of the vehicle compared to the conventional mounting position shown by the broken line in the figure. Therefore, the seat S which is placed above the rear seat S can be moved rearward in accordance with the distance that the entire strut 13 has moved, and the rear space within the single room can be expanded.

By the way, when the strut 13 is moved rearward in this way, the load at the time of bounce acts on the straight line connecting the rear lateral center C and the mount insulator 24, so the moment M acting on the strut 13 toward the rear of the vehicle is generated. acts, and this moment M1 causes the piston rod 20 to bend rL relative to the outer cylinder 19 in an inverted dogleg shape in the figure. However, since the center C8 of the coil spring 34 is arranged so that the upper part of the vehicle is tilted rearward with respect to the center axis C9 of the stock 13, the compressive load acting on the coil spring 34 is transmitted to the strut 13. against said Momen.

Moment M in the opposite direction to M1! It acts as. Therefore, it is greatly reduced by the moment M in the opposite direction acting on the piston rod io, or Ml and M! It is possible to prevent strain 2'Lt by canceling. Therefore, the strut 13 can operate smoothly without being affected by noise caused by the noise. In this embodiment, the central axis C of the coil spring 34 is the center axis C of the coil spring 34.

When tilting with respect to the center of the social strut 13 @C1,
The center axis of the coil spring 34 is zero weight when the vehicle @[fl
The ninth point is set to 1, which passes through the posterior center of habitus Ct in the visual field.
The bound load li at the rear @ll is the coil spring 34.
will be inputted efficiently.

In the rear -11 radius rod 17el, 8! The connecting point Q between the two front feeders (in the embodiment shown in FIG. 1, the rubber bushing 50 for supporting the unit and the rubber bushing 84 in the actual structure m1fll in Fig.
The permissible stroke amount is 1 m in a straight line connecting the connection point Q and the mount insulator 24't, and the father point u1aq= of the S motion locus of the lower end of the strut) 13, and 1 for the vertical IIL distance between the lower end of the strut) 13. However, the allowable stroke amount j in this example S is the conventional stroke e valley t
It can be set to be equal to or higher than LO, and the ride comfort will not be deteriorated by moving backward.

Detailed Description of the Invention As described in detail below, in the strut-type device for original drawings of the present invention, the central axis of the outer cylinder is located at both rear fields of the plate with respect to the book center, and the strut'@@ The strut movement allows the rear to move backward in both directions, making it possible to further widen the rear space within the single cabin. The moment of 10,000 yen generated on the piston rod when the strut moves backward can be reduced by arranging the central axis of the coil spring so that the upper part of the vehicle is inclined backward with respect to the central axis of the outer cylinder. , O1 is applied to f1 acting on the coil spring.
A moment is generated in the strut that opposes the moment in the twisting direction, and the piston rod is twisted.
Lt can be significantly reduced or prevented. In history,
Even if the strut is moved rearward, the allowable stroke of the strut is not reduced, and there are various advantages in that the vehicle ride comfort can be prevented from deteriorating.

[Brief explanation of drawings]

1, 2, and 3 show a simple example of the strut two-way suspension system of the present invention, and FIG. 10 is a side view of the main part, and FIG.
The figure is a rear view of part A, Figure 3 is a plan view of the main part, Figure 4 is
FIG. 50g6 shows another embodiment of the present invention, and the fourth (2nd
) is the main part - side view, culvert 5 is the main part, figure 6 is l! Fig. 9 is a plan view showing a schematic explanation of the strut-type original picture hanging device of the present invention; Fig. 8 is a perspective view of a conventional strut-type book hanging device; FIG. 1O is a schematic explanatory diagram of a conventional suspension system. 10.10a...Strut type vehicle suspension system, 11
... Residue, 12... Axle case (single support member), 13... Stock), 14... Single body, 15...
- Arm, 16... Base member, 17... Stabilizer, 1? b...Bending part (radius rod), 19.
...Outer cylinder, 20...Piston rod, 24...Mount insulator, 34...Coil spring, C
・0 wire width center, C,... Outer II (strut) center axis, C3... Coil spring center axis.

Claims (1)

[Claims] (1) An outer cylinder fixed to the wheel support member, a shock absorber housed in the outer cylinder and having a piston rod protruding from the outer cylinder elastically supported on the vehicle body side, and a shock absorber that surrounds the outer periphery of the outer cylinder. and a coil spring whose one end is supported by the outer cylinder and whose other end is supported by the vehicle body, the central axis of the outer cylinder being disposed on the rear side of the vehicle with respect to the wheel center, and the coil spring A strut-type vehicle suspension system, characterized in that the central axis of the outer cylinder is arranged such that the upper part of the vehicle is tilted rearward with respect to the central axis of the outer cylinder.