JP3046071U - Height adjustment joint members for multi-link rear suspension - Google Patents

Abstract

(57) [Problem] To provide a vehicle height that can be adjusted in two or more stages while using a plate spring originally provided. SOLUTION: In a multi-link rear suspension in which a plate-shaped spring 4 supporting a vehicle body is connected to a rear wheel axle housing 10, the spring 4 and the rear wheel axle housing 10 are connected via a joint member 13. The connection point Y between the spring 4 and the rear wheel axle housing 10 is connected to the connection point X before the connection of the joint member.
And a plurality of connection holes 13B, 13C in the joint member 13 in the vertical direction so that the connection point of the joint member 13 to the rear wheel axle housing 10 can be changed and adjusted in the vertical direction. It is characterized by being formed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a joint member for adjusting a vehicle height in a multilink rear suspension in which a plate-shaped spring supporting a vehicle body is connected to an axle housing for a rear wheel.

[0002]

[Prior art]

 In the above-mentioned multi-link type rear suspension, the vehicle body is generally supported by a coil spring in the vertical direction, but by supporting the vehicle body by a plate-shaped spring, a wide and flat floor surface is secured. It is possible to improve the livability of the rear seats. In recent years, a plate-shaped spring made of resin (FRP) has been used for the purpose of reducing the weight of the plate-shaped spring and improving cushion performance by a complicated bending action.

By the way, there is a demand for lowering the vehicle height to achieve high-speed stability. For example, in order to realize this demand, a plate in which the thickness and dimensions of the resin (FRP) spring having the above-described structure are changed. It is conceivable to forcibly lower the vehicle height by attaching an elastic spring and changing the elastic force on the vehicle body.However, this may lead to a decrease in cushioning performance and durability. It was difficult.

[0004]

[Problems to be solved by the invention]

 In view of the above points, the present invention is to make it possible to adjust the vehicle height in two or more steps while using a plate spring originally provided.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the present invention provides a multi-link rear suspension in which a plate-shaped spring supporting a vehicle body is connected to a rear wheel axle housing. By connecting via the joint member, the connection point between the spring and the rear wheel axle housing is located above or below the connection point before the connection of the joint member, and the joint member for the rear wheel axle housing is connected. A plurality of connection holes are formed in the joint member in the vertical direction so that the connection point can be changed and adjusted in the vertical direction. Therefore, by connecting the spring and the rear wheel axle housing via the joint member, the connection point between the spring and the rear wheel axle housing is located above the connection point before the connection of the joint member. The distance between the lower end of the vehicle body and the ground can be made longer than before connecting the joint members to increase the vehicle height.The connection point between the spring and the rear wheel axle housing is connected before the connection of the joint members. By being positioned below the point, the distance between the lower end of the vehicle body and the ground can be made shorter than before the connection of the joint members, and the vehicle height can be reduced. Moreover, by selecting the connection hole of the joint member to the rear wheel axle housing, the vehicle height can be reduced to two or more steps.

In a multi-link rear suspension in which a plate-shaped spring supporting a vehicle body is connected to a rear wheel axle housing, the spring and the rear wheel axle housing are connected to each other via a joint member. The connection point between the spring and the rear wheel axle housing is located above or below the connection point before connecting the joint member, so that the connection point of the joint member with respect to the rear wheel axle housing can be changed and adjusted in the vertical direction. A plurality of connection holes are formed in the joint member in the up-down direction, and the spring is mounted in a state of being protruded upward and curved. In the case where the vehicle height can be adjusted in the same manner as described above, by mounting the spring in a state of being protruded and curved upward, it is possible to adopt a configuration in which the spring is leveled by the weight of the vehicle body when the vehicle body is supported. For example, when using a horizontal leaf spring, it is necessary to use a thick spring so that the spring does not protrude downward more than necessary due to the weight of the vehicle body when supported. Therefore, the weight increases accordingly, but this increase in weight can be avoided.

In a multi-link type rear suspension in which a plate-shaped spring supporting a vehicle body is connected to a rear wheel axle housing, the spring is connected to a rear wheel axle housing via a joint member. The connection point between the spring and the rear wheel axle housing is located above or below the connection point before the connection of the joint member, and the connection point of the joint member with respect to the rear wheel axle housing can be changed and adjusted in the vertical direction. The joint member is characterized in that two connecting holes are formed in the vertical direction at intervals of about 20 mm. In the same vehicle height adjustment as described above, by forming the minimum required two connection holes in the joint member, the vehicle height adjustment can be made approximately 20 mm while maintaining the necessary shape retaining strength of the joint member. The height can be adjusted in two steps depending on the height difference.

[0008]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view of a multi-link type rear suspension, and FIG. 2 is an exploded perspective view of the same. This multi-link type rear suspension mainly includes an upper link 1 and a lower link 2 and a toe control rod 3. The transformer spring 4 is used as a plate-like spring of the multi-link type rear suspension. In the figure, 5 is a spring member for supporting the vehicle body, 6 is a spring seat for fixing the transbar spring 4, 7 is a suspension member to which the rear final drive 8 and the like are fixed, 9 is a drive shaft, 10 is an axle housing for a rear wheel, and 11 is a shock absorber.

Each end of the transbar spring 4 is connected to the rear wheel axle housing 10 via a spring connecting rod 12. A metal joint member 13 is interposed between the spring connecting rod 12 and the rear wheel axle housing 10, so that the vehicle height can be reduced. Next, attachment of the joint member 13 will be described.

As shown in FIGS. 3 to 5, the joint member 13 includes a pair of plate portions 13A, 13A each having a lower portion formed in a bifurcated shape, and the transmissive bar is provided between the plate portions 13A, 13A. The mounting portion 4A of the spring 4 is bolted in a sandwiched state with the inserted portion. The mounting portion 4A is integrated with a rubber material 15 fixed to both ends of the transbar spring 4 by bolts 14,14. First, the rear wheel axle housing 10 is supported by a jack or the like so that the rear wheel axle housing 10 is brought into a running state in which the rear wheel axle housing 10 is grounded. Disconnect link with 4. Thereafter, a protrusion 12A at the lower end of the spring connecting rod 12 is inserted into one of the through holes 13B and 13C formed at an upper and lower interval H of about 20 mm above the joint member 13, and the mounting nut is inserted. Tighten and fix with 16. A dedicated bolt 17 is inserted between the pair of plate portions 13A, 13A of the joint member 13 with the mounting portion 4A of the transbar spring 4 inserted therebetween, and through holes of different sizes are formed in the plate portions 13A, 13A. After the holes 13a and 13b and the hole 4a formed in the mounting portion 4A of the transbar spring 4 are penetrated, they are tightened and fixed by the lock nut 18 to complete the mounting of the joint member 13. The inner surfaces of the through holes 13B and 13C are formed so as to be inclined by making the diameters of the holes different between the inlet side and the outlet side. Further, the bolt 17 connects the small diameter portion 17A on the distal end with a threaded portion on the outer surface, the large diameter portion 17C with the head portion 17B at the end, and the two diameter portions 17A, 17C. And a tapered intermediate portion 17D.

By interposing the joint member 13 between the transformer bar spring 4 and the spring connecting rod 12 as described above, the transformer for the spring connecting rod 12 before the joint member 13 shown in FIG. The connection point Y of the transbar spring 4 with respect to the spring connecting rod 12 after the joint member 13 shown in FIG. 6 is mounted can be lowered below the connection point X of the spring 4, so that the vehicle height is reduced accordingly. You can do it. FIG. 6 shows a case where the lower end of the spring connecting rod 12 is connected to the through hole 13C located on the lower side, the vehicle height is reduced by about 20 to 40 mm, and the lower end of the joint member 13 is The position indicated by the broken line in FIG. 6 indicates a case where the lower end of the spring connecting rod 12 is connected to the through hole 13B located on the upper side, and is approximately 40 to 60 mm lower than the above by approximately 20 mm. The vehicle height is set to be low. Three or more through holes may be formed in the joint member 13 so that the vehicle height can be changed in three or more steps. In this case, in order to easily maintain the shape retaining strength of the joint member 13, the vertical dimension of the joint member 13 needs to be larger than that in the case where two through holes are formed. The joint member 13 may be used for increasing the vehicle height.

[0013]

[Effect of the invention]

 According to the first aspect, by connecting the leaf spring and the rear wheel axle housing via the joint member, the connection point between the leaf spring and the rear wheel axle housing is located above or below the connection point before the connection. Then, the vehicle height can be adjusted. However, it is possible to use the inherently provided leaf springs without using leaf springs of different dimensions as in the past, so that it is possible to change only the vehicle height while maintaining the same elastic force of the springs. It is possible to do so, and the security can be changed as before. Furthermore, the vehicle height can be easily adjusted with a simple configuration by simply adding a joint member without changing basic components such as a spring, which is advantageous in terms of cost. In addition, since the vehicle height can be adjusted in at least two stages, the vehicle height can be adjusted according to the needs of the client, and the specification range can be expanded.

According to the second aspect, the vehicle height can be adjusted in the same manner as in the first aspect, but the thickness of the leaf spring is made as thin as possible only by changing the shape of the leaf spring by bending it upward. The weight of the vehicle can be reduced, but the vehicle body can be held horizontally. Therefore, not only the weight of the vehicle can be reduced, but also the degree of freedom in designing the suspension can be increased.

According to the third aspect, the vehicle height can be adjusted in the same manner as in the first aspect, but the joint member is formed with a minimum of two connecting holes. It is easy to maintain the shape-retaining strength required for the vehicle, and it is also advantageous in terms of durability. In addition, it is possible to adjust the vehicle height in two steps with a height difference of about 20 mm, which is optimal, and the needs of the client There is also an advantage that the joining member can be easily processed while being easy to adjust to.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a multi-link type rear suspension.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is a perspective view of a joint member.

FIG. 4 is a longitudinal sectional side view showing a mounting portion of a joint member.

FIG. 5 is a cross-sectional plan view showing a mounting portion of the joint member.

FIG. 6 is a schematic front view showing a mounting portion of the joint member.

FIG. 7 is a schematic front view showing attachment of a conventional transbar spring shown as a comparative example of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper link 2 Lower link 3 Toe control rod 4 Transbar spring (spring) 4A mounting part 4a hole 5 Spring member 6 Spring seat 7 Suspension member 8 Rear final drive 9 Drive shaft 10 Rear wheel axle housing 11 Shock absorber 12 Spring connecting Rod 12A Projecting part 13 Joint member 13A Plate part 13B, 13C Through hole 13a, 13b Through hole 14 Bolt 15 Rubber material 16 Mounting nut 17 Dedicated bolt 17A Small diameter part 17B Head 17C Large diameter part 17D Middle part 18 Lock nut X, Y Connection point H Vertical spacing

Claims (3)

[Utility model registration claims] 1. A multi-link rear suspension in which a plate-shaped spring supporting a vehicle body is connected to a rear wheel axle housing, wherein the spring and the rear wheel axle housing are connected via a joint member. The connection point between the spring and the rear wheel axle housing is located above or below the connection point before the connection of the joint member, and the connection point of the joint member to the rear wheel axle housing can be changed and adjusted in the vertical direction. The joint member for adjusting the vehicle height in the multi-link rear suspension, wherein a plurality of connection holes are formed in the joint member in the vertical direction. 2. A multi-link rear suspension in which a plate-shaped spring supporting a vehicle body is connected to a rear wheel axle housing, wherein the spring and the rear wheel axle housing are connected via a joint member. The connecting point between the spring and the rear wheel axle housing is located above or below the connecting point before connecting the joint member, so that the connecting point of the joint member to the rear wheel axle housing can be changed and adjusted in the vertical direction. A plurality of connecting holes are formed in the joint member in the up-down direction, and the spring is mounted in a state of being protruded and curved upwardly in the multi-link rear suspension. 3. A multi-link rear suspension in which a plate-shaped spring supporting a vehicle body is connected to a rear wheel axle housing, wherein the spring and the rear wheel axle housing are connected via a joint member. The connection point between the spring and the rear wheel axle housing is located above or below the connection point before the connection of the joint member, and the connection point of the joint member to the rear wheel axle housing can be changed and adjusted in the vertical direction. So that two connecting holes are formed in the joint member by approximately 20 mm.
A height-adjusting joint member for a multi-link type rear suspension, wherein the joint member is formed in the vertical direction with an interval of.