CN100445113C - Installation structure of rear suspension for vehicle - Google Patents

Abstract

The present invention provides a mounting structure for a rear suspension for a vehicle, which not only reduces the weight of the vehicle body by solving the problem of increasing the weight of the vehicle body, but also solves the problem of compressing the space in the vehicle compartment, so that the interior of the vehicle compartment The space is set large. The shock absorber bracket (50) is an elongated part, on which the first and second protrusions (57, 58) that are roughly hat-shaped in cross-section are formed, so that the longitudinal direction of the shock absorber bracket is aligned with the outer wall. (37) Vertically and along the curved surface of the outer wall, install the shock absorber bracket on the outer wall in this state, so that the stud bolts (53, 54) respectively pass from the flat parts of the bottom surfaces of the first and second convex parts ( 61, 62) are stretched out and welded on the flat part of the bottom surface; on the upper end (49) of the shock absorber (43), a mounting fitting (47) extending along the front and rear direction of the car body is set, so that the stud bolt and the mounting fitting Fit the two ends of the shock absorber, thereby installing the upper end of the shock absorber on the shock absorber bracket.

Description

Installation structure of rear suspension for vehicle

technical field

The present invention relates to a mounting structure of a rear suspension for a vehicle, which can suspend a rear wheel on a vehicle body through the rear suspension and support a shock absorber of the rear suspension on the vehicle body side.

Background technique

As a mounting structure for a rear suspension for a vehicle, a structure in which a damper support portion for supporting a damper is provided near an upper portion of a wheel house has been put into practical use.

As a practical rear suspension mounting structure for a vehicle, it is practically sufficient as long as it can receive the upper end of the shock absorber through the vehicle body.

As a mounting structure for such a vehicle rear suspension, a structure in which a compression spring (coil spring) is supported around the outer periphery of the shock absorber main body near the top of the wheel house is known (eg , refer to Japanese Patent Laid-Open Publication No. 2003-54440 (page 7, FIG. 4)).

9 is a diagram illustrating a conventional basic structure. The mounting structure 200 of a rear suspension for a vehicle has a structure in which a shock absorber (damper) 201 consists of a compression spring (coil spring) 202 and a shock absorber main body (shock absorber). 203, wherein the compression spring 202 absorbs the impact of the rear wheel (not shown), and the shock absorber main body 203 deflects it quickly when the compression spring 202 deflects (setting the damping force small), and compresses When the spring 202 is stretched, it returns slowly (the damping force is set high);

However, since the upper end of the shock absorber 201 is received by the substantially planar portion 206 in the vertical wall portion 205 of the wheel house 204 in the vehicle rear suspension mounting structure 200 , stress concentrates on the substantially planar portion 206 . Therefore, there is a problem that in order to firmly form the substantially planar portion 206 in the vertical wall portion 205 , it is necessary to use a thick sheet metal, resulting in an increase in the weight of the vehicle body.

In addition, since the shock absorber has a structure in which a compression spring (coil spring) 202 is arranged on the outer periphery of a shock absorber main body (shock absorber) 203 in terms of the mounting structure of the rear suspension for a vehicle, the outer diameter of the shock absorber becomes smaller. Large, the shock absorber needs to be arranged close to the center of the vehicle body, which has the disadvantage of compressing the space in the cabin.

That is, a mounting structure for a rear suspension for a vehicle that can reduce the weight of the vehicle body and can also increase the space in the cabin is expected.

Contents of the invention

The object of the present invention is to provide a mounting structure for a rear suspension for a vehicle, which can not only solve the problem of increasing the weight of the vehicle body, but also reduce the weight of the vehicle body and solve the problem of compressing the space in the cabin , The space in the compartment can be set large.

The vehicle rear suspension mounting structure of the invention of claim 1 is as follows: a wheel cover for covering the rear wheels is provided on the outside of the rear frame, and a rear suspension for supporting the rear wheels is arranged below the wheel cover. The shock absorber of the rear suspension is provided with a shock absorber bracket on the wheel cover, which is characterized in that the wheel cover is formed such that the outer wall covering the rear wheel is arcuate in a front section view; the shock absorber bracket is The elongated part is formed with two protrusions, the first and the second protrusions, the first and the second protrusions are roughly hat-shaped in cross-section, so that the length direction of the shock absorber bracket is perpendicular to the outer wall And make it follow the curved surface of the outer wall, install the shock absorber bracket on the outer wall in this state, make the stud bolts protrude from the bottom flat part of the first and second convex parts respectively, and in this state the The stud bolts are welded on the flat part of the bottom surface; the upper end of the shock absorber is provided with a mounting fitting extending along the front and rear direction of the vehicle body, and the two ends of the mounting fitting are provided with fitting holes for the stud bolt fitting; the shock absorber The side surface of the shock absorber enters between the first and second protrusions, and the stud bolt is inserted into the fitting hole, and then the nut is screwed on the stud bolt, thereby installing the upper end of the shock absorber on the shock absorber bracket.

For example, as long as the weight of the vehicle body can be reduced, fuel consumption can be reduced, so it is popular.

Therefore, the shock absorber bracket is an elongated part on which two convex parts, the first and the second convex parts, are formed. The first and second convex parts are roughly bowl-shaped in cross-section, so that the shock absorber The longitudinal direction of the bracket is perpendicular to the outer wall of the wheel house and along the curved surface of the outer wall. In this state, the shock absorber bracket is installed on the outer wall, and the upper end of the shock absorber is installed on the first and second protrusions.

That is, the shock absorber bracket is an elongated part on which two convex parts, the first and the second convex parts, are formed. The length direction of the bracket is perpendicular to the outer wall of the wheel house and makes it follow the curved surface of the outer wall. In this state, install the shock absorber bracket on the outer wall, and install the upper end of the shock absorber on the first and second protrusions. Accordingly, a thin material can be used for the damper bracket.

Moreover, the shock absorber bracket is an elongated part on which two convex parts, the first and the second convex parts, are formed. The first and second convex parts are roughly in the shape of a hat in cross section, so that the shock absorber The length direction of the bracket is perpendicular to the outer wall of the wheel cover and makes it follow the curved surface of the outer wall. In this state, the shock absorber bracket is installed on the outer wall, so that the outer wall of the wheel cover can smoothly withstand the heat transmitted by the shock absorber. load.

Furthermore, make the side surface of the shock absorber enter between the first and second protrusions, and insert the stud bolt into the fitting hole, then screw the nut on the stud bolt, and install the upper end of the shock absorber on the shock absorber. On the device bracket, the mounting fittings can be closely engaged with the first and second protrusions.

For example, it is desirable to make the compartment easier to use if the space in the compartment can be set large.

The invention of claim 2 is characterized in that the damper is arranged substantially parallel to the first and second convex portions.

By arranging the damper substantially parallel to the first and second protrusions, the damper can be disposed close to the wheel house.

As far as the invention of claim 1 is concerned, the shock absorber bracket is an elongated part on which two convex parts, a first and a second convex part, are formed. Shape, make the length direction of the shock absorber bracket perpendicular to the outer wall of the wheel cover and make it along the curved surface of the outer wall, in this state install the shock absorber bracket on the outer wall, and install the upper end of the shock absorber on the first , On the second convex part, therefore, the shock absorber bracket can use a thin material. Thereby, weight reduction of a vehicle body can be aimed at. As a result, there is an advantage that fuel consumption can be reduced.

Moreover, the shock absorber bracket is an elongated part on which two convex parts, the first and the second convex parts, are formed. The first and second convex parts are roughly in the shape of a hat in cross section, so that the shock absorber The length direction of the bracket is perpendicular to the outer wall of the wheel cover and makes it follow the curved surface of the outer wall. In this state, the shock absorber bracket is installed on the outer wall, so that the outer wall of the wheel cover can smoothly withstand the vibration transmitted by the shock absorber. load. As a result, there is an advantage that it is possible to prevent concentrated loads from being applied to the vehicle body.

Furthermore, make the side surface of the shock absorber enter between the first and second protrusions, and insert the stud bolt into the fitting hole, then screw the nut on the stud bolt, and install the upper end of the shock absorber on the shock absorber. On the device bracket, it is possible to closely engage the mounting fittings with the first and second protrusions. The result is the advantage of being able to securely mount the shock absorber on the shock absorber bracket.

According to the invention of claim 2, since the damper is arranged substantially parallel to the first and second protrusions, the damper can be arranged close to the wheel house. As a result, there is an advantage that the space in the vehicle compartment can be set wider, and the convenience of using the vehicle compartment can be improved.

Description of drawings

FIG. 1 is a perspective view of a vehicle to which a rear suspension mounting structure for a vehicle according to the present invention is applied.

Fig. 2 is a perspective view of a rear portion of a vehicle body to which the mounting structure of the rear suspension for a vehicle according to the present invention is applied.

Fig. 3 is a rear view of a rear suspension employing the attachment structure of the vehicle rear suspension of the present invention.

Fig. 4 is a plan view of a rear suspension employing the mounting structure of the vehicle rear suspension of the present invention.

Fig. 5 shows the mounting structure of the vehicle rear suspension according to the present invention, and is a perspective view of a state in which a shock absorber is mounted to a wheel house via a shock absorber bracket.

Fig. 6 is a sectional view taken along line 6-6 in Fig. 5 .

Fig. 7 is a side view of the mounting structure of the vehicle rear suspension of the present invention.

FIG. 8 is an explanatory view showing the function of the attachment structure of the vehicle rear suspension of the present invention.

FIG. 9 is a diagram illustrating a conventional basic structure.

Detailed ways

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. Wherein, the reading direction of the figure is subject to the reading direction marked in the figure.

Fig. 1 is the perspective view of the vehicle adopting the installation structure of the vehicle rear suspension of the present invention, 10 is a vehicle, 11 is a vehicle body, 12 is a front wheel, 13 is a rear wheel, 14 is an engine cover, and 15 is a front grille , 16 and 16 are left and right headlights respectively, 17 is a front bumper, 18 is a front window, 19 is a roof, 21 is a front door, 22 is a rear door, 23 is a rearview mirror, 24 is a rear bumper, and 26 is a compartment , 31,31 are left and right rear frame respectively, and 32 is crossbeam, and 33 is the wheel cover of rear wheel 13.

As will be described later, the vehicle rear suspension mounting structure 30 of the present invention is a structure of the mounting portion of the shock absorber 43 as a component of the rear suspension 40, wherein the rear suspension 40 can freely buffer the rear suspension. The wheel 13 and the vehicle rear suspension mounting structure 30 are mounting structures that enable the wheel house 33 to smoothly receive the load transmitted from the shock absorber 43 .

Fig. 2 is the perspective view of the rear portion of the car body adopting the installation structure of the vehicle rear suspension of the present invention, the composition of the installation structure 30 of the vehicle rear suspension includes: left and right rear frame (floor frame) 31,31 Connect these rear frame 31,31 crossbeam (under frame) 32; Be respectively arranged on the outside of rear frame 31,31 to cover the left and right wheel housing 33,33 of rear wheel 13,13 (referring to Fig. 1); The rear suspensions 40, 40 (40 on one side are not shown) that are arranged under these wheel housings 33, 33 to freely buffer and support the rear wheels 13, 13 (see FIG. 1 ); The shock absorbers 43, 43 of the frames 40, 40 (the side 43 is not shown), and the shock absorber brackets 50, 50 (the side 50 is not shown) installed on the wheel houses 33, 33 respectively.

The rear frame 31 is a frame extending in the front-rear direction of the vehicle body, and supports a rear arm 45 of the rear suspension 40 via a trailing arm holder (not shown) of the rear suspension 40 . Furthermore, it has the spring receiving part 36 which supports the coil spring 44 of the rear suspension 40 (refer FIG. 3).

The beam 32 has a lower rocker arm support portion 35 that supports the lower rocker arm 41 of the rear suspension 40 so that the lower rocker arm 41 of the rear suspension 40 can freely swing.

The wheel house 33 is formed such that its outer wall (side wall) 37 covering the rear wheel 13 (see FIG. 1 ) is arcuate or arched in front sectional view (longitudinal sectional view viewed from the rear of the vehicle).

3 is a rear view of the rear suspension of the vehicle rear suspension mounting structure of the present invention. The rear suspension 40 is a Mcpherson (Mcpherson) type suspension, and its main components include: a lower rocker arm 41 installed on the lower rocker arm support portion 36 of the crossbeam 32 in a manner that one end can freely swing (freely swing); The steering knuckle 42 that is installed on the other end of the lower rocker arm 41 is free to swing; the two ends are respectively connected to the steering knuckle 42 and the shock absorber 43 of the shock absorber bracket 50; A coil spring (compression spring) 44 between the spring receiving parts 36; one end is installed on the steering knuckle 42, and the other end is installed on the rear swing arm 45 on the rear frame 31 side in a freely swingable manner; It is mounted on the knuckle 42 in a swingable manner, and the other end is mounted in an upper arm 46 on the side of the rear frame 31 in a swingable manner.

In the figure, 72 is a support pin connecting one end of the lower rocker arm 41 and the lower rocker arm support part 35, 73 is a support pin connecting the other end of the lower rocker arm 41 and the steering knuckle 42, and 74 is the lower end of the shock absorber 43. 49 a is a support pin supported by the knuckle 42 , and 75 is a support pin for supporting the upper arm 46 by the knuckle 42 .

Fig. 4 is the top view of the rear suspension of the installation structure of the vehicle rear suspension of the present invention, the lower rocker arm 41 is a frame extending along the width direction of the vehicle body, and is the shock buffering effect of the shock absorber 43 and the coil spring 44 The swing arm of the rear wheel 13 can be freely cushioned, and has a support portion 41 a of a coil spring 44 . The knuckle 42 is a member that supports an axle (not shown) of the wheel 13 .

The damper 43 (damper) is a component arranged substantially perpendicular to the vehicle body, and a mounting fitting 47 extending in the front-rear direction of the vehicle body is provided on the upper end 49 , and the mounting fitting 47 is fixed to the damper bracket 50 . In addition, 43 a is a side surface of the shock absorber 43 , 43 b is a fitting fitting portion for fitting the fitting 47 , and 48 , 48 are fitting holes formed in the fitting 47 .

Furthermore, the shock absorber 43 is a member that functions in such a way that when the compression spring 44 deflects, it is quickly deflected (setting the damping force small), and when the compression spring 44 is extended (returned), it is deflected quickly. Return slowly (set the damping force high).

The coil spring 44 is a member arranged separately from the shock absorber 43 and absorbs the impact of the rear wheel 13 (see FIG. 1 ).

The rear swing arm 45 is an arm extending in the front-rear direction of the vehicle body and is used to maintain the straightness of the vehicle 10 . The upper arm 46 is an arm extending in the width direction of the vehicle body.

5 is a perspective view showing the mounting structure of the vehicle rear suspension of the present invention, in which the shock absorber is mounted to the wheel house via the shock absorber bracket, and FIG. 6 is a sectional view taken along line 6-6 in FIG. 5 .

As shown in FIG. 6, the structure of the shock absorber bracket (shock absorber support member) 50 includes: an inner bracket 51; an outer bracket 52 integrally formed on the inner bracket 51; And the stud bolts 53,54 on the outer bracket 52, on the inner bracket 51, form the mounting recesses 55,56 for welding the stud bolts 53,54, and on the outer bracket, form 2 from the section (vehicle top) Observed cross-section) on the 1st, the 2nd protruding portion 57,58 that is roughly top-hat shape, as shown in Figure 5, inner bracket 51 and outer bracket 52 are elongated parts, make inner bracket 51 and outer bracket The longitudinal direction of 52 is perpendicular to the outer wall 37 of the wheel cover 33 and makes it along the curved surface of the outer wall 37. In this state, the inner bracket 51 and the outer bracket 52 are installed on the outer wall 37, so that the stud bolts 53, 54 are respectively connected from the first 1. Bottom flat parts 61 , 61 of the second protrusions 57 , 58 protrude, and the stud bolts 53 , 54 are welded to the bottom flat parts 61 , 61 in this state.

Moreover, 59 is formed by the 1st, 2nd convex part 57,58, and is a recessed part which allows the side surface 43a of the damper 43 to enter.

As shown in FIG. 6, the stud bolt 53 comprises: a head 64 welded to the mounting recess 55; ; And the fitting hole 48 of the mounting fitting 47 that penetrates the shock absorber 43 and is screwed into the nut 71 is constituted by the external thread portion 66 .

In addition, the stud bolt 54 has the same structure as the stud bolt 53 , 67 denotes a head portion, 68 denotes a boss portion, and 69 denotes an external thread portion.

As shown in Fig. 6, the mounting structure 30 of the vehicle rear suspension is such that the side surface 43a of the shock absorber 43 enters between the first and second convex parts 57, 58 (inside the concave part 59), and the double head The bolts 53, 54 are inserted into the fitting holes 48, 48, and the nuts 71, 71 are screwed on the stud bolts 53, 54, whereby the upper end 49 of the shock absorber 43 is mounted on the shock absorber bracket 50, so that the The attachment fitting 47 is in close contact with the first and second protrusions 57 and 58 . As a result, the shock absorber 43 can be firmly mounted on the shock absorber bracket 50 .

As shown in FIG. 6 , the rear suspension mounting structure 30 for a vehicle arranges the damper 43 substantially parallel to the first and second protrusions 57 and 58 , so that the damper 43 can be disposed close to the wheel house 33 . As a result, the space in the compartment 26 (see FIG. 1 ) can be set wider, and the usability of the compartment 26 can be improved.

7 is a side view of the installation structure of the rear suspension for vehicles of the present invention. The installation structure 30 of the rear suspension for vehicles is structured such that a wheel cover 33 for covering the rear wheels 13 is provided on the outside of the rear frame 31. The rear suspension 40 for supporting the rear wheel 13 is arranged under the wheel house 33, and the shock absorber bracket 50 is provided on the wheel house 33 in order to support the shock absorber 43 of the rear suspension 40, and the wheel house 33 is formed such that its The outer wall (side wall) 37 covering the rear wheel 13 is arcuate and curved in the front sectional view; the shock absorber bracket 50 is an elongated part on which two convex portions 57, 58 are formed. The first and second protrusions are roughly hat-shaped in cross-section. The longitudinal direction of the shock absorber bracket 50 is perpendicular to the outer wall 37 and along the curved surface of the outer wall 37. In this state, the shock absorber The device bracket 50 is installed on the outer wall 37, and the stud bolts 53, 54 are protruded from the bottom flat parts 61, 62 (see FIG. 6 ) of the first and second convex parts 57, 58 respectively, and the The stud bolts 53, 54 are welded on the flat parts 61, 62 of the bottom surface; the upper end 49 of the shock absorber 43 is provided with a mounting fitting 47 extending along the front and rear direction of the vehicle body, and the two ends of the mounting fitting 47 are provided with stud bolts. Fitting holes 48, 48 for 53, 54 fitting; make the side surface 43a of the shock absorber 43 enter between the first and second convex portions 57, 58 (in the concave portion 59), and insert the stud bolts 53, 54 The holes 58 , 58 are fitted, and the nuts 71 , 71 are screwed onto the stud bolts 53 , 54 , whereby the upper end 49 of the shock absorber 43 is attached to the shock absorber bracket 50 .

For example, as long as the weight of the vehicle body can be reduced, fuel consumption can be reduced, so it is popular.

That is, the shock absorber bracket (damper supporting member) 50 is an elongated member on which two convex portions, first and second convex portions 57, 58 are formed, and the first and second convex portions 57, 58 It is roughly in the shape of a top hat in cross-section, and the length direction of the shock absorber bracket 50 is perpendicular to the outer wall 37 of the wheel house 33 and along the curved surface of the outer wall 37. In this state, the shock absorber bracket 50 is installed on the outer wall. 37, the upper end 49 of the shock absorber 43 is installed on the first and second protrusions 57, 58, so the shock absorber bracket 50 can use a thin material. Thereby, reduction of vehicle body weight can be aimed at. As a result, the fuel consumption of the vehicle 10 (see FIG. 1 ) can be reduced.

Moreover, the shock absorber bracket 50 is an elongated member on which two convex portions, the first and second convex portions 57 and 58 are formed. Shape, make the longitudinal direction of the shock absorber bracket 50 perpendicular to the outer wall 37 of the wheel house 33 and make it along the curved surface of the outer wall 37, in this state the shock absorber bracket 50 is installed on the outer wall 37, the shock absorber The upper end 49 of the wheel housing 43 is attached to the first and second protrusions 57 and 58 , whereby the outer wall 37 of the wheel house 33 can smoothly receive the load transmitted from the shock absorber 43 . As a result, concentrated application of load to the vehicle body can be prevented.

The mounting structure 30 of the rear suspension for a vehicle has a coil spring 44 for absorbing an impact on the shock absorber 43, and the coil spring 44 is separately configured from the shock absorber 43, so that the shock absorbers can be separately arranged in the vacant space. device 43 or coil spring 44. As a result, it is possible to expand the degree of freedom in design.

8( a ) and ( b ) are explanatory views showing the function of the attachment structure of the vehicle rear suspension of the present invention. (a) shows the mounting structure 130 of the vehicle rear suspension of a comparative example, and (b) shows the mounting structure 30 of the vehicle rear suspension of an example.

In (a), the mounting structure 130 for the vehicle rear suspension is configured such that a shock absorber case 134 is provided inside a wheel house 133, and a shock absorber 143 assembled as a whole from a shock absorber main body 142 and a coil spring 144 is formed. The upper end 149 is mounted on the shock absorber housing 134.

For example, when a load acts on the damper 143 as indicated by the arrow a1, the load is concentrated on the plane of the damper case 134 as indicated by the arrows a2, a2, and therefore the damper case 134 needs to have corresponding rigidity. As a result, a thick material has to be used for the shock absorber case 134, which also leads to an increase in the weight of the vehicle body.

In (b), the mounting structure 30 of the rear suspension for a vehicle is that the shock absorber bracket 50 is an elongated member on which two convex portions, first and second convex portions 57 and 58, are formed. , The second protrusions 57, 58 are roughly hat-shaped in cross-section, and the longitudinal direction of the shock absorber bracket 50 is perpendicular to the outer wall 37 of the wheel house 33 and along the curved surface of the outer wall 37. In this state, the Since the damper bracket 50 is attached to the outer wall 37, when a load acts on the damper as shown by the arrow b1, the load can be smoothly transmitted along the outer wall 37 of the wheel house 33 as shown by the arrows b2 and b3. Therefore, the vehicle body rigidity of the wheel house 33 can be reduced. As a result, it is possible to reduce the weight of the vehicle body.

In addition, although the mounting structure of the vehicle rear suspension of the present invention described in the embodiment is the mounting structure of the shock absorber of the rear suspension supporting the rear wheel 13 as shown in FIG. 4 , it is not limited thereto. It may also be a structure adopted in the mounting structure of the shock absorber of the front suspension that supports the front wheels.

The installation structure of the vehicle rear suspension of the present invention is suitable for use in passenger vehicles such as high-end luxury vehicles that require both rigidity of the vehicle body and quietness.

Claims (2)

1. rear hanger bracket used for vehicle mounting structure, be used to cover the wheel cowl of trailing wheel in the rear frame arranged outside, configuration is used to support the rear suspension of trailing wheel below this wheel cowl, for the bumper that supports this rear suspension shock absorber support is set on wheel cowl, it is characterized in that

Above-mentioned wheel cowl forms, and its outer wall that covers above-mentioned trailing wheel is arc curved surface shape the longitudinal section of observing from the rear portion of vehicle;

Above-mentioned shock absorber support is the elongate parts, be formed with the 1st on it, two protuberances of the 2nd protuberance, the 1st, the cross-sectional plane that the 2nd protuberance is observed from the vehicle top roughly is the carnival hat shape, make the length direction of this shock absorber support and above-mentioned outer wall vertical and along the curved surface of above-mentioned outer wall and this shock absorber support is installed on the above-mentioned outer wall, make thru-bolt respectively from the above-mentioned the 1st, stretch out the par, bottom surface of the 2nd protuberance, and under this state this thru-bolt is being welded on this par, bottom surface

In above-mentioned bumper upper end the installation accessory that extends along the car body fore-and-aft direction is set, the embedded hole for the chimeric usefulness of above-mentioned thru-bolt is set at the two ends of this installation accessory,

Make the side of above-mentioned bumper enter into the recess that forms between above-mentioned the 1st, the 2nd protuberance, and make above-mentioned thru-bolt embed above-mentioned embedded hole, nut is screwed on the above-mentioned thru-bolt again, the upper end with above-mentioned bumper is installed on the above-mentioned shock absorber support thus.

2. rear hanger bracket used for vehicle mounting structure as claimed in claim 1 is characterized in that, above-mentioned bumper and the configuration of above-mentioned the 1st, the 2nd protuberance almost parallel.

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