JP2017132379A - Suspension assembly jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspension assembly jig capable of bringing a camber angle closer to a design value by restraining an axle assembly from falling inward or outward.SOLUTION: A suspension assembly jig 1 is used to support an axle assembly S1 in a position of assembly to a suspension member S0. The suspension assembly jig 1 comprises a plurality of support parts 2 for supporting the axle assembly S1 in the position of assembly. The plurality of support parts 2 are arranged in positions to surround a barycentric position of the axle assembly S1 supported in the position of assembly in a plan view.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a suspension assembling jig used for assembling an automobile suspension.

  2. Description of the Related Art Conventionally, an invention related to a motor unit mounting method for an electric vehicle in which a motor and a high-power component are mounted on a vehicle body is known (see Patent Document 1 below). This attachment method includes a step of attaching the motor to the suspension member, a step of holding the motor and the suspension member on the support jig, and a plurality of jig pins protruding from the support jig at a position higher than the motor. (Refer to claim 1 etc.). Further, in this attachment method, the jig pins may be installed so that the center positions of the plurality of jig pins exist in the vicinity of the gravity center positions of the high-power components (see claim 3 and the like).

  According to the mounting method described in Patent Literature 1, the center position of the plurality of jig pins is present in the vicinity of the gravity center position of the high power component, and thus the center of the pin hole of the high power component is located in the vicinity of the gravity center position. . For this reason, even if the high-power component rises as the jig pin rises, there is little risk of falling in the vehicle front-rear and left-right directions, and it is supported stably during the rise (see paragraphs 0054, 0055, etc.). ).

JP 2011-20626 A

  According to the mounting method described in Patent Document 1, high-power components can be stably supported. However, in the process of assembling the axle assembly to the suspension member, the axle assembly may fall inward or outward, and the camber angle may deviate from the design value.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a suspension assembling jig capable of suppressing the inward or outward falling of the axle assembly and bringing the camber angle closer to the design value. .

  In order to achieve the above object, the suspension assembly jig of the present invention is a suspension assembly jig for supporting the axle assembly at the assembly position with respect to the suspension member, and a plurality of suspension assembly jigs for supporting the axle assembly at the assembly position. The plurality of support portions are arranged at positions that surround a gravity center position of the axle assembly supported at the assembly position in plan view.

  The suspension assembling jig of the present invention is a jig used for assembling an automobile suspension. The suspension assembly jig of the present invention can support the suspension member and the axle assembly so as to be assembled by the plurality of support portions.

  The plurality of support portions are, for example, upper arm, lower arm No. 1 and lower arm No. 1 It is possible to support a suspension member to which parts such as 2 are assembled. The axle assembly has a configuration in which parts such as a knuckle, a brake rotor, a shock absorber, and a trailing arm are assembled integrally. The center-of-gravity position of the axle assembly can be calculated, for example, by creating a 3D model of the axle assembly on the 3D-CAD software and inputting the density of the parts constituting the axle assembly.

  The structure of the support portion is not particularly limited. For example, the support portion can include a support column that extends in the vertical direction and a receiving portion that is provided at the upper end portion of the support column and supports the support point of the axle assembly from below. The receiving part can have, for example, a concave shape or an L-shape corresponding to the shape of the support point of the axle assembly. Further, the number of support portions is not particularly limited as long as it is three or more that can surround the position of the center of gravity of the axle assembly in plan view.

  As described above, in the suspension assembling jig of the present invention, the plurality of support portions are arranged at positions surrounding the gravity center position of the axle assembly supported at the assembling position in plan view. As a result, the axle assembly can be stably supported at the assembly position by the plurality of support portions. For this reason, the axle assembly supported at a predetermined assembly position can be prevented from falling inward in the vehicle width direction or falling outward in the vehicle width direction, and the camber angle can be brought closer to the design value. .

  Furthermore, when tuning is performed to finely adjust the assembly position by inserting a shim between the support part of the suspension assembly jig and the axle assembly, the axle assembly can be moved in a direction corresponding to the insertion of the shim. it can. As a result, tuning can be facilitated, the use of a camber adjustment mechanism, alignment adjustment cam bolts, nuts, and the like can be avoided, and assembly costs can be reduced.

  As can be understood from the above description, according to the suspension assembling jig of the present invention, it is possible to suppress the inward or outward falling of the axle assembly and to bring the camber angle closer to the design value.

1 is a schematic configuration diagram of a suspension assembly jig according to an embodiment of the present invention. The side view which shows the specific example of the suspension assembly jig | tool shown in FIG. The bottom view which shows the support point of the axle assembly shown in FIG. The bottom view showing the improper support point of the axle assembly. Explanatory drawing explaining the assembly | attachment of an axle assembly. The graph which shows the deviation from the design value of the camber angle of each chassis number.

  Hereinafter, an embodiment of a suspension assembling jig of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic configuration diagram of a suspension assembly jig 1 according to an embodiment of the present invention. In FIG. 1, the front direction Fr, the upward direction Up, and the right direction Rh of the vehicle perpendicular to each other are indicated by arrows.

  The suspension assembling jig 1 of this embodiment is a jig used for assembling an automobile suspension, and more specifically, a jig for supporting the axle assembly S1 at an assembling position with respect to the suspension member S0. It is a tool.

  The axle assembly S1 has a configuration in which parts such as a knuckle, a brake rotor, a shock absorber, and a trailing arm are assembled together. The center-of-gravity position G (see FIG. 3) of the axle assembly S1 is calculated, for example, by creating a 3D model of the axle assembly S1 on 3D-CAD software and inputting the density of the components that constitute the axle assembly S1. be able to.

  The suspension assembly jig 1 includes a plurality of support portions 2 that support the axle assembly S1 at the assembly position. The plurality of support portions 2 are disposed at positions surrounding the gravity center position G of the axle assembly S1 in a plan view of the suspension assembly jig 1 viewed from above with the axle assembly S1 supported at the assembly position. .

  The suspension assembling jig 1 of this embodiment has a support portion 3 for supporting the suspension member S0. The support part 3 for supporting the suspension member S0 may be plural or single. The support portion 3 for supporting the suspension member S0 supports the suspension member S0 in which components such as the upper arm S2, the lower arm S3, and the lower arm S4 are assembled.

  The suspension assembling jig 1 of the present embodiment includes a suspension member S0 and an axle by a plurality of support portions 2 for supporting the axle assembly S1 and a single or a plurality of support portions 3 for supporting the suspension member S0. The assembly S1 is supported so that it can be assembled.

  FIG. 2 is a side view showing a specific example of the suspension assembling jig 1 shown in FIG. FIG. 2 is a side view of the suspension assembling jig 1 shown in FIG. 1 as viewed from the right side in a direction opposite to the Rh direction. As shown in FIG. 1, the suspension assembling jig 1 of the present embodiment has four support portions 2 for supporting one axle assembly S1.

  More specifically, the first support portion 2a supports, for example, an intermediate portion of the trailing arm S1a constituting the axle assembly S1. The second support 2b supports, for example, the end of the trailing arm S1a on the brake rotor S1b side. The third support portion 2c supports, for example, a part of the brake rotor S1b. The fourth support portion 2d (not shown in FIG. 2) supports, for example, a knuckle or a part of a component attached to the knuckle on the back side in the axial direction of the brake rotor S1b.

  Although the structure of the support part 2 is not specifically limited, For example, it has the support | pillar 21 extended in an up-down direction, and the receiving part 22 which is provided in the upper end part of a support | pillar and supports the support point of axle assembly S1 from the downward direction. it can. The receiving portion 22 of each support portion 2 can have, for example, a concave shape, an L shape, or an arc shape corresponding to the shape of the support points P1, P2, P3, P4 (see FIG. 3) of the axle assembly S1. . Moreover, the number of the support parts 2 will not be specifically limited if it is three or more which can surround the gravity center position G of the axle assembly S1 by planar view.

  In the example shown in FIG. 2, the support portion 3 that supports the suspension member S <b> 0 has a convex receiving portion 32 at the upper end of the column 31. In the support portion 3, for example, a convex receiving portion 32 is inserted into a through hole provided in the suspension member S 0, and the suspension member S 0 is supported by the support column 31.

  FIG. 3 is a bottom view showing support points P1, P2, P3, and P4 of the axle assembly S1 when it is supported at the assembly position by the suspension assembly jig 1 of the present embodiment. FIG. 3 is a bottom view of the right axle assembly S1 shown in FIG. 1 as viewed from below in the Up direction.

  As described above, the four support portions 2 of the suspension assembling jig 1 shown in FIG. 1 are arranged at positions surrounding the gravity center position G of the axle assembly S1 when the suspension assembling jig 1 is viewed from above. Has been. Therefore, as shown in FIG. 3, in the bottom view of the axle assembly S1, the four support points P1, P2, P3, and P4 of the axle assembly S1 supported by the four support portions 2 of the suspension assembly jig 1 are It arrange | positions so that the gravity center position G of axle assembly S1 may be enclosed.

  More specifically, the first support point P1 by the first support portion 2a of the four support portions 2 that support the axle assembly S1 of the suspension assembling jig 1 is a tray that constitutes the axle assembly S1. It is located in the middle part of the ring arm S1a. Further, the second support point P2 by the second support portion 2b is located, for example, at the end of the trailing arm S1a on the brake rotor S1b side. The third support point P3 by the third support portion 2c is located at a part of the brake rotor S1b, for example. The fourth support point P4 by the fourth support portion 2d is located on, for example, a part of the knuckle or a part attached to the knuckle.

  The center-of-gravity position G of the axle assembly S1 is located in a substantially trapezoidal region A surrounded by the four support points P1, P2, P3, and P4 when the axle assembly S1 is viewed from below. In other words, the four support portions 2 of the suspension assembly jig 1 that supports the axle assembly S1 at the four support points P1, P2, P3, and P4 are arranged in the plan view of the suspension assembly jig 1 in the axle assembly S1. It is arranged at a position surrounding the gravity center position G.

  4 differs from the example shown in FIGS. 1 to 3 in that the gravity center position G of the axle assembly S1 is surrounded by four support points P1 ′, P2 ′, P3 ′, and P4 ′ in the bottom view of the axle assembly S1. An inappropriate example is shown that is located outside the area A ′. That is, in this example, the support part of the suspension assembly jig (not shown) is not disposed at a position surrounding the gravity center position G of the axle assembly S1 supported at the assembly position in plan view.

  More specifically, the first support point P1 ′ by the first support part of the four support parts that support the axle assembly S1 of the suspension assembly jig is a trailing arm that constitutes the axle assembly S1. It is located at the tip of S1a. Further, the second support point P2 'by the second support portion is located at, for example, an intermediate portion of the trailing arm S1a. The third support point P3 ′ by the third support part and the fourth support point P4 ′ by the fourth support part are at the same positions as the support points P3 and P4 in the example shown in FIG. positioned.

  The center-of-gravity position G of the axle assembly S1 is located outside the generally trapezoidal region A ′ surrounded by the four support points P1 ′, P2 ′, P3 ′, and P4 ′ in the bottom view of the axle assembly S1. doing. In other words, in the inappropriate example shown in FIG. 4, the four support portions of the suspension assembly jig that supports the axle assembly S1 at the four support points P1 ′, P2 ′, P3 ′, and P4 ′ are the suspension assembly. It is not arranged at a position surrounding the gravity center position G of the axle assembly S1 in plan view of the jig.

  This is because, in the inappropriate example shown in FIG. 4, the two support portions that support the trailing arm S1a of the axle assembly S1 support the tip side of the trailing arm S1a rather than the appropriate example shown in FIG. Due to the fact that

  Hereinafter, with reference to FIG.5 and FIG.6, the effect | action of the suspension assembly jig | tool 1 of this embodiment is demonstrated. FIG. 5 is an explanatory view for explaining the assembly of the axle assembly S1 to the suspension member S0 shown in FIG. 1, and is a rear view of the suspension member S0 and the axle assembly S1 viewed from the rear side in the Fr direction. In addition, in FIG. 5, while each member is simplified and represented conceptually, a state where the tire T is assembled to the brake rotor S1b of the axle assembly S1 is illustrated.

  FIG. 5A shows a state before the axle assembly S1 is assembled to the suspension member S0. The axle assembly S1 is assembled to the suspension member S0 via a plurality of arms SA such as an upper arm S2, a lower arm S3, and a lower arm S4. The arm SA has bolt holes BH at both ends, and the suspension member S0 and the axle assembly S1 have bolt holes BH at positions corresponding to the bolt holes BH at one end and the other end of the arm SA, respectively.

  FIG. 5B shows a state in which the suspension member S0 and the axle assembly S1 are supported by the suspension assembly jig 1 of the present embodiment shown in FIGS. 1 and 2, and the axle assembly S1 is assembled to the suspension member S0. ing.

  The assembly of the axle assembly S1 to the suspension member S0 can be performed, for example, by the following procedure. First, one end of each arm SA is attached to the suspension member S0 by inserting a bolt B through the bolt hole BH at one end of each arm SA and each bolt hole BH of the suspension member S0 and fastening a nut. Next, the bolt B is inserted into the bolt hole BH at the other end of each arm SA attached to the suspension member S0 and the bolt hole BH of the axle assembly S1 supported at the assembly position by the suspension assembly jig 1. By fastening the nut, the other end of each arm SA is attached to the axle assembly S1.

  Here, as described above, the suspension assembly jig 1 of the present embodiment is a jig for supporting the axle assembly S1 at the assembly position with respect to the suspension member S0, and supports the axle assembly S1 at the assembly position. A plurality of support portions 2 are provided. And the some support part 2 is arrange | positioned in the position which surrounds the gravity center position G of the axle assembly S1 supported by an assembly position in planar view.

  As a result, the axle assembly S1 is supported at the four support points P1, P2, P3, and P4 surrounding the gravity center position by the suspension assembly jig 1 of the present embodiment at the assembly position, as shown in FIG. The Thereby, at the time of the assembly of the axle assembly S1, the axle assembly S1 can be stably supported by the plurality of support portions 2 at the assembly position. Therefore, as shown in FIG. 5 (b), the axle assembly S1 supported at a predetermined assembly position is prevented from falling down inward in the vehicle width direction and falling outward in the vehicle width direction. The camber angle can be made closer to the design value.

  On the other hand, FIG. 5C shows that the suspension member S0 and the axle assembly S1 are supported by a suspension assembly jig 1 ′ different from the suspension assembly jig 1 of the present embodiment, and the axle assembly S1 is used as the suspension member S0. The assembled state is shown.

  In the suspension assembling jig 1 ′ shown in FIG. 5 (c), a plurality of support portions 2 ′ are arranged at positions where the center of gravity G of the axle assembly S1 supported at the assembling position is not surrounded in plan view. Yes. In this case, as shown in FIG. 4, the axle assembly S1 is supported by four support points P1 ', P2', P3 ', and P4' that do not surround the gravity center position G. In this case, when the axle assembly S1 is assembled, the axle assembly S1 is tilted inward or outward, and the camber angle deviates from the design value.

  More specifically, as shown in FIG. 5C, the center of the bolt B is moved with respect to the center of the bolt hole BH of the axle assembly S1, and the axle assembly S1 falls inward. When such inward tilting occurs, it is necessary to use an alignment adjustment cam bolt as the bolt B or introduce camber adjustment equipment, both of which increase the assembly cost.

  FIG. 6 shows a camber angle design of a vehicle in which the axle assembly S1 is assembled using the suspension assembly jig 1 of this embodiment and a vehicle in which the axle assembly S1 is assembled using another suspension assembly jig 1 ′. It is a graph which shows the shift | offset | difference from a value. In the graph shown in FIG. 6, a thick solid line with a camber angle deviation of ± 45 'from the design value is a standard line.

  In FIG. 6, vehicles with chassis numbers 1 to 21 are vehicles in which the axle assembly S1 is assembled using the suspension assembly jig 1 of the present embodiment. Further, the vehicles having the chassis numbers 22 to 34 use the suspension assembly jig 1 ′ that supports the axle assembly S1 at the support points P1 ′, P2 ′, P3 ′, and P4 ′ shown in FIG. 4 to install the axle assembly S1. It is a vehicle assembled.

  As shown in FIG. 6, in the vehicle in which the axle assembly S1 is assembled using the suspension assembly jig 1 of this embodiment, the deviation of the camber angle from the design value is about −7.0 ′ on average. On the other hand, in the vehicle in which the axle assembly S1 is assembled using another suspension assembly jig 1 ', the deviation of the camber angle from the design value is about -24.0' on average.

  As described above, in the vehicle in which the axle assembly S1 is assembled using the suspension assembly jig 1 of the present embodiment, the camber angle can be brought closer to the design value by suppressing the inward and outward falling of the axle assembly S1. . On the other hand, in a vehicle in which the axle assembly S1 is assembled using another suspension assembling jig 1 ′, the axle assembly S1 falls inward or outward, and the deviation of the camber angle from the design value is more than three times. To increase.

  That is, even if the axle assembly S1 is supported in the vicinity of the center of gravity position G, the plurality of support portions 2 ′ are arranged at positions that do not surround the center of gravity position G of the axle assembly S1 supported at the assembly position in plan view. In such a case, the deviation of the camber angle from the design value becomes large.

  Furthermore, the suspension assembly jig 1 according to the present embodiment inserts the axle assembly S1 into the shim when performing tuning for fine adjustment of the assembly position by inserting a shim between the support portion 2 and the axle assembly S1. It can be moved in the direction according to. As a result, tuning can be facilitated, the use of a camber adjustment mechanism, alignment adjustment cam bolts, nuts, and the like can be avoided, and assembly costs can be reduced.

  As described above, according to the suspension assembling jig 1 of the present embodiment, the axle assembly S1 can be prevented from falling inward or outward, and the camber angle can be made closer to the design value.

  The embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

1 Suspension assembly jig 2 Support part G Center of gravity position S1 Axle assembly S0 Suspension member

Claims (1)

A suspension assembly jig for supporting the axle assembly at the assembly position with respect to the suspension member,
A plurality of support portions for supporting the axle assembly at the assembly position;
The suspension assembling jig, wherein the plurality of support portions are arranged at a position surrounding a gravity center position of the axle assembly supported at the assembly position in plan view.

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