JPH11301206A - Axle holding component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembling work without applying welding to a connecting place, by integrally constituting a suspension reinforcing part and an axle housing part. SOLUTION: In an axle holding component equipped with a suspension reinforcing part 5, having an axle hole 5a to arrange an axle 3 in the hole 5a, and also the blacket 6 of a suspension link is fitted to an outer surface side, and an axle housing part 8, having an axle hole 8a to rotatably support an axle 9 arranged in the hole 8a via a ball bearing 12, the reinforcing part 5 and the housing part 8 are constituted by a integral member, also the lower surface side of the hole 5a of the reinforcing part 5 is constituted as a downward taper surface, to provide a sensor fitting recess for fitting an ABS sensor to the outer peripheral surface of the integral member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle holding part which supports an axle and to which a suspension member is attached.

[0002]

2. Description of the Related Art FIG. 6 is a perspective view of a conventional rear suspension device, and FIG. 7 is a sectional view of a main part thereof. 6 and 7, a differential device 2 is fixed to the center of the suspension member 1, and the differential device 2 outputs the rotation transmitted from the engine to the left and right axles 3. Various suspension links 4 are attached to both ends in the vehicle width direction of the suspension member 1, and the other end of each suspension link 4 is attached to a suspension reinforcement 5.

[0003] Each of the suspension reinforcements 5
As shown in detail in FIG. 7, the axle 3 has a cylindrical shape, and the inner peripheral side thereof is configured as an axle hole 5a, and the axle 3 is disposed in the axle hole 5a. The outer peripheral surface 5b of the suspension reinforcement 5 is configured as a mounting surface for a suspension member such as the suspension link 4. Specifically, a bracket 6 is fixed to the upper surface side of the outer peripheral surface 5b by welding, and the suspension link 4 and the like are attached via the bracket 6. In some cases, the suspension member may be directly welded to the outer peripheral surface 5b.

[0004] Each of the suspension reinforcements 5
An axle housing portion 8 is arranged on the outside of the vehicle in the vehicle width direction, and the axle housing portion 8 and the suspension reinforce portion 5 are fixed by welding. The axle housing part 8 has a cylindrical shape like the suspension reinforce part 5, and an inner peripheral side thereof is formed as an axle hole 8a. An axle 9 on the wheel side is arranged in the axle hole 8a, and the axle 9 on the wheel side and the axle 3 on the reinforce side are connected via a ball joint (universal joint) 10. The ball joint 10 transmits the rotation even in a state where swing between the axles 9 on the wheel side and the axle 3 on the reinforcement side is allowed.

The axle 9 on the wheel side is fitted to a boss 11a of the wheel hub 11, and a ball bearing 12 is interposed between the outer peripheral surface of the boss 11a and the inner peripheral surface of the axle housing 8. I have. Thus, the axle housing portion 8 rotatably supports the axle 9 and the wheel hub 11 via the ball bearing 12 which is a bearing.

An axle housing 8 is provided with an anti-lock brake system sensor 13 (hereinafter referred to as "ABS sensor"), which is mounted as follows. As shown in detail in FIGS. 7 and 8, a notch 5 c is formed at one end of the suspension reinforcement 5, and an axle housing 8 is provided.
Is provided with an extended portion 8b that partially or entirely protrudes from other portions. When the end portions of the axle housing portion 8 and the suspension reinforce portion 5 are fitted to each other, a recess formed by the extension portion 8b and the cutout portion 5c is used as the mounting surface 14, and the pedestal 15 is attached to the mounting surface 14, for example. Fixed by welding. A sensor holding portion 23 is attached to the pedestal 15 using a screw 22, and the ABS sensor 13 held by the sensor holding portion 23 is fixed with its tip inserted into a sensor insertion hole 26 of the mounting surface 14. I have. The ABS sensor 13 detects the rotation of the axle 9 based on the presence or absence of reflection of light from the sensor detection rotor unit 24, and controls the wheel so as not to lock by varying the hydraulic pressure of the brake oil using the detection result. .

In FIG. 6, reference numeral 16 denotes a shock absorber assembly, 17 denotes a vibration absorbing coil spring, and in FIG. 7, 18 denotes a cushion rubber, 19 denotes a wheel, 20 denotes a back plate, and 21 denotes a rim.

[0008]

By the way, the suspension reinforce portion 5 is a component, and the axle 3 is arranged with the diameter of the axle hole 5a on the inner peripheral side, and the axle 3 is allowed to swing. The outer peripheral surface 5b is required to be a circumferential surface on which the suspension member is mounted. The axle housing part 8 is required to have a diameter of the axle hole 8a on the inner peripheral side as the outer diameter of the ball bearing 12 as a part, and a diameter of the outer peripheral side is only required to hold the ball bearing 12. It is required that the thickness be large enough to obtain the required strength. Therefore, conventionally, since the size and shape of the suspension reinforcement 5 and the axle housing 8 are different, the suspension reinforcement 5 and the axle housing 8 are naturally formed as separate parts.
In addition, the connecting ends of the two parts are configured to have dimensions that can be fitted, and the two parts are fitted and welded at the stage of assembling the device. Therefore, welding is necessary and troublesome. When welding is performed, the shape of the component must be considered so that the torch can be inserted, so that the degree of freedom of the component shape is reduced.

The suspension reinforcement 5 must be aligned with the center of the axle 3 based on the suspension geometry, and the axle housing 8 is positioned relative to the ball bearing 12 (wheel-side axle 9). It is necessary to match the center position,
The center alignment of each of the two parts must be performed, which is complicated.

Further, the ABS sensor 13 is mounted on the axle housing 8 with an extension 8b and the suspension reinforcement 5 with a cutout 5c. 5
As for b, it is necessary to secure a circumferential surface as a mounting surface, so that the extension portion 8b of the mounting portion cannot be welded, and there is a problem that the strength is weak.

Accordingly, the present invention provides an axle holding part which eliminates the need for welding at the connection between the suspension reinforce part and the axle housing part, and eliminates various problems caused by welding and connecting both parts. Make it an issue. Further, the present invention eliminates the need for welding at the connection between the suspension reinforcer and the axle housing, and solves various problems caused by welding and connecting both parts. It is an object of the present invention to provide an axle holding part that has no problem.

[0012]

According to a first aspect of the present invention, there is provided a suspension reinforce portion having an axle hole, in which an axle is disposed, and a suspension member attached to an outer surface side, and an axle hole. An axle housing part having an axle housing part rotatably supporting, via a bearing, the axle disposed in the axle hole, wherein the suspension reinforce part and the axle housing part are integrally formed. It is characterized by the following.

Therefore, since the suspension reinforce portion and the axle housing portion are integral members, there is no need to connect both parts by welding, and only one centering is required.

According to a second aspect of the present invention, there is provided the axle holding component according to the first aspect, wherein a lower surface side of the axle hole of the suspension reinforce portion is opposite to a connection end portion side to the axle housing portion. The tapered surface is gradually lowered downward toward the side end.

Therefore, in addition to the operation of the first aspect of the present invention, the foreign matter in the axle hole of the suspension reinforce portion rolls on the tapered surface and is carried to the release end side.

According to a third aspect of the present invention, there is provided the axle holding component according to the first aspect, wherein a component mounting uneven portion for mounting the component is provided on the outer surface side.

Therefore, in addition to the function of the first aspect of the present invention, since the component mounting concave / convex portion is provided on the integral member of the suspension reinforce portion and the axle housing portion, the mounting portion also has high strength.

According to a fourth aspect of the present invention, there is provided the axle holding component according to the third aspect, wherein the concave and convex portion for mounting the component is a concave portion for mounting a sensor for mounting an antilock brake system sensor. I do.

Therefore, in addition to the effect of the third aspect of the present invention, since the sensor mounting recess is provided in the integral member of the suspension reinforcement and the axle housing, the strength of the sensor mounting portion is also high.

According to a fifth aspect of the present invention, there is provided the axle holding part according to the first aspect, wherein the suspension reinforce portion and the axle housing portion are integrally formed by hydraulic bulging one material pipe. It is characterized by being formed by molding.

Therefore, in addition to the operation of the first aspect of the present invention, according to the hydraulic bulging process, it is possible to easily form a cylindrical member having a different inner diameter and an outer diameter depending on a portion. The uneven shape on the outer surface side of the molded product can be relatively freely molded, and the thickness can be controlled.

According to a sixth aspect of the present invention, in the axle holding component according to the second aspect, the tapered surface on the lower surface side of the axle hole of the suspension reinforce portion is formed in the suspension reinforce portion and the axle housing portion. Are formed by forming the entire lower surface of the suspension reinforce portion into a flared shape when one material tube is integrally formed by hydraulic bulging.

Therefore, in addition to the operation of the second aspect of the present invention, according to the hydraulic bulging process, it is possible to easily form a cylindrical member having an inner diameter and an outer diameter that differ depending on the portion, and to form an irregular shape on the outer surface side of the molded product. Can be molded relatively freely.

According to a seventh aspect of the present invention, there is provided the axle holding component according to the third aspect, wherein the component mounting concave / convex portion connects the suspension reinforce portion and the axle housing portion with one material pipe. It is characterized in that it is formed by simultaneous molding when integrally molded by pressure bulging.

Therefore, in addition to the operation of the third aspect of the present invention, according to the hydraulic bulging process, it is possible to easily form a cylindrical member having an inner diameter and an outer diameter that differ depending on the portion, and to form an irregular shape on the outer surface side of the molded product. Can be molded relatively freely.

According to an eighth aspect of the present invention, in the axle holding component according to the fourth aspect, the sensor mounting concave portion connects the suspension reinforce portion and the axle housing portion with one material pipe by hydraulic pressure. It is characterized in that it is formed by simultaneous molding when integrally molded by bulging.

Therefore, in addition to the function of the invention of claim 4, according to the hydraulic bulging process, it is possible to easily form a cylindrical member having an inner diameter or an outer diameter that differs depending on the portion, and to form an irregular shape on the outer surface side of the molded product. Can be molded relatively freely.

[0028]

According to the first aspect of the present invention, the suspension reinforce portion and the axle housing portion are integral members, and there is no need to connect both parts by welding. Because there is no degree of freedom in the shape of parts, the number of brackets and bosses is reduced, and the number of welding parts is reduced as a whole, so that the quality is stable, the number of component parts is reduced, and the brackets and bosses described above are reduced. Costs are reduced by reducing
Furthermore, since the centering as a member only needs to be performed once, the assembling work becomes easy.

According to the second aspect of the invention, in addition to the effect of the first aspect, the foreign matter in the axle hole of the suspension reinforce portion rolls on the tapered surface and is conveyed to the open end, so that the foreign matter is naturally discharged. Is done.

According to the third aspect of the present invention, in addition to the effects of the first aspect of the present invention, since the component mounting concave / convex portion is provided on the integral member of the suspension reinforce portion and the axle housing portion, the mounting portion also has high strength. There is no problem in strength.

According to the fourth aspect of the present invention, in addition to the effect of the third aspect of the present invention, since the sensor mounting recess is provided in the integral member of the suspension reinforcement and the axle housing, the strength of the sensor mounting portion is also high. There is no problem in strength.

According to the fifth aspect of the present invention, in addition to the effects of the first aspect of the present invention, according to the hydraulic bulging process, the integral member of the suspension reinforce portion and the axle housing portion has different inner and outer diameters depending on the portion. Because such a cylindrical member can be easily formed, and furthermore, the uneven shape of the member can be formed relatively freely, thereby also reducing the number of brackets and bosses and controlling the wall thickness. Therefore, it is possible to reduce the weight by reducing waste meat.

According to the invention of claim 6, in addition to the effect of the invention of claim 2, according to the hydraulic bulging process, a cylindrical member having an inner diameter and an outer diameter that differs depending on the portion can be easily formed, and the molded product can be formed. Since the uneven shape on the outer surface side can be molded relatively freely,
An integral member in which the suspension reinforce part and the axle housing part are integrated and the lower surface side of the suspension reinforce part is flared can be easily formed.

According to the seventh aspect of the present invention, in addition to the effects of the third aspect, according to the hydraulic bulging, the hydraulic bulging facilitates a cylindrical member whose inner diameter and outer diameter are different depending on the portion. The suspension reinforcement and the axle housing part are integrated with each other, and the integral member having the part mounting projections and depressions on the outer surface side can be molded and the irregular shape on the outer surface side of the molded product can be relatively freely molded. It can be easily molded.

According to the eighth aspect of the present invention, in addition to the effect of the fourth aspect of the present invention, according to the hydraulic bulging process, a cylindrical member having a different inner diameter and an outer diameter depending on a portion can be easily formed, and a molded product can be formed. Since the uneven shape on the outer surface side can be molded relatively freely,
The suspension reinforce portion and the axle housing portion can be integrally formed, and an integral member having a sensor mounting concave portion on the outer surface side can be easily formed.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of an axle support structure to which an axle holding part according to an embodiment of the present invention is applied, FIG. 2 is a partial perspective view of the axle holding part, and FIG. FIG. 4 (a) is a view showing the state of FIG.
FIG. 4B is a sectional view taken along line A, and FIG.
FIG. 7 is a sectional view taken along line BB of FIG. 1 to 4, components corresponding to those of the above-described conventional example in this embodiment are denoted by the same reference numerals, and redundant description will be omitted.

That is, in this embodiment, the suspension reinforce part 5 and the axle housing part 8 are formed as an axle holding part 30 which is an integral member, and the connection part between the suspension reinforce part 5 and the axle housing part 8 is formed. Is formed in a tapered portion 31 one of which gradually approaches the outside diameter and the inside diameter of the other. The lower surface side of the axle hole 5a of the suspension reinforce portion 5 has a taper having an inclination angle A gradually decreasing downward from the connection end portion side to the axle housing portion 8 to the release end portion opposite thereto. It is configured as a surface 32. In this embodiment, the tapered surface 32 is formed by molding the entire lower surface side of the suspension reinforcement 5 into a flared shape.

Further, as shown in FIGS. 3 and 4, the suspension reinforcement 5 and the axle housing 8
A sensor mounting concave portion 33 as a component mounting concave / convex portion is provided on the outer peripheral surface of the connection point with the sensor. A pedestal 34 is fixed to the sensor mounting recess 33 by, for example, welding.
The sensor holder 23 is attached to the pedestal 34 using the screw 22. AB held by the sensor holding unit 23
The S sensor 35 (anti-lock brake system sensor) is fixed with its tip inserted into the sensor insertion hole 37 of the sensor mounting recess 33. ABS sensor 35
Is used for the same control as in the conventional example, but it goes without saying that it may be used for other controls. 2, 3 and 4, reference numeral 36 denotes a brake bracket, and the brake bracket 36 is fixed to the base 34 with bolts 25.

On the other hand, the axle holding part 30 is formed by, for example, hydraulic bulging. Hydraulic bulging is
Ultra high-pressure oil is fed into the raw material tube, and a part of the raw material tube is expanded to the shape of the molding surface of the mold and cold-formed, and is generally formed as follows. As shown in FIG. 5 (a), a lower mold 40 provided with a bulging recess 40a and an upper mold 4 arranged at an upper position and movable vertically.
1 and a pair of left and right press sections (not shown) having pistons 42 disposed on both sides between them. Then, the material tube 43 is arranged at the center on the molding surface of the lower mold. Next, as shown in FIG. 5B, the upper mold 41 is moved downward to make contact with the material tube 43, and in this state, the mold press (not shown) is moved in the center direction to The molds 40 and 41 are fastened. Next, as shown in FIG. 5 (c), ultra-high pressure oil is injected into the material pipe 43 through injection holes (not particularly denoted by reference numerals) provided in the central portions of the pair of pistons 42, and both sides are arranged. The piston 42 compresses the material tube 43 in the axial direction. Then, as shown in FIG.
When the portion corresponding to the bulging recess 40a of the material tube 43 bulges (BULLGE) and is further compressed under pressure, FIG.
As shown in (e), the bulging portion 43a comes into contact with the push pin 44, and the pressurization and compression is stopped. Finally,
As shown in FIG. 5F, the upper mold 41 is moved upward and
The operation is completed when the left and right pistons 42 are moved in a direction away from each other, and the pushing pin 44 is displaced upward.
According to the hydraulic bulging process described above, the cylindrical member can be easily formed although the integral member of the suspension reinforce portion 5 and the axle housing portion 8 has different inner and outer diameters depending on the portion. In addition, the hydraulic bulging process can relatively freely form the concave and convex shape on the outer surface side of the molded product. Therefore, it is possible to reduce brackets and bosses by devising the outer surface shape. In addition, since the thickness of the hydraulic bulging process can be controlled, the suspension reinforce portion 5 can be formed to a desired thickness and the axle housing portion 8 can be formed to a desired thickness. Reduction in weight is easily possible.

According to the hydraulic bulging process, since the uneven shape on the outer surface side of the molded product can be formed relatively freely, the suspension reinforcement 5 can be formed when the axle holding component 30 is formed.
The lower surface side can be easily formed into a flared shape at the same time, and the concave / convex shape on the outer surface side of the molded product can be formed relatively freely, so that the sensor mounting concave portion 33 can be easily formed at the same time. Conventionally, when the lower surface side of the suspension reinforcement 5 is tapered, it is necessary to perform additional processing such as press working.
The recessed portion 33 for sensor attachment is formed by providing the extended portion 8b in the groove and the notch 5c in the suspension reinforcement 5, but the present invention does not require such a process and complicated structure.

In the above configuration, since the suspension reinforcement 5 and the axle housing 8 are integral members as the axle holding parts 30, there is no need to connect both parts by welding at the time of assembling the parts. There is no need to consider work. Therefore, since the design of the component shape can be freely designed to some extent, the number of brackets and bosses can be reduced. Further, since the number of welding parts is reduced in the entire apparatus, the quality is stable, and the cost is reduced by reducing the number of components and the above-mentioned brackets and bosses. Furthermore, the centering of the axle holding member 30 at the time of assembling the parts only needs to be performed once, which facilitates the assembling work.

The suspension reinforcement 5
Even if foreign matter enters the axle hole 5a for some reason, the foreign matter rolls on the tapered surface 32 and is carried to the open end side, so that the foreign matter is naturally discharged.

The suspension reinforcement 5
And the axle housing 8 are provided with the sensor mounting recess 33 in the integral member. Therefore, unlike the conventional case, there is no possibility that welding cannot be performed despite the presence of a welded portion in the periphery, and the strength of the sensor mounting portion is reduced. High strength with no problem.

According to the above-described embodiment, the concave / convex portion for attaching the component is the concave portion 33 for attaching the sensor. However, the concave / convex portion for attaching the component may be a component other than the sensor. May be.

According to the above-described embodiment, the tapered surface 32 of the suspension reinforcement 5 is formed by forming the entire lower surface of the suspension reinforcement 5 into a flared shape, but the lower surface of the axle hole 5a is formed. Only the taper shape may be used, and the outer peripheral side may be horizontal. This configuration is convenient when used as a component mounting surface.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an axle support structure to which an axle holding component according to an embodiment of the present invention is applied.

FIG. 2 is a partial perspective view of the axle holding component.

FIG. 3 is a plan view of the vicinity of a sensor mounting location.

FIG. 4A is a diagram illustrating a state in which a sensor is mounted, and FIG.
FIG. 4B is a sectional view taken along line BB of FIG. 3 in a state where the sensor is mounted.

FIGS. 5A to 5F are cross-sectional views each showing a forming step of hydraulic bulging.

FIG. 6 is a perspective view of a conventional rear suspension device.

FIG. 7 is a cross-sectional view of the main part.

FIG. 8 is a plan view showing the vicinity of the above-mentioned sensor mounting portion.

[Explanation of symbols]

 3, 9 axle 4 suspension link (suspension member) 5 suspension reinforce part 5a, 8a axle hole 8 axle housing part 12 ball bearing (bearing) 30 axle holding part 32 tapered surface 33 sensor mounting concave part (part mounting concave and convex part) 35 ABS sensor

Claims (8)

[Claims] 1. A suspension reinforce part having an axle hole, an axle disposed in the axle hole, and a suspension member attached to an outer surface side, and an axle hole, wherein the axle hole is disposed in the axle hole. An axle holding part having an axle housing part that rotatably supports an axle via a bearing, wherein the suspension reinforce part and the axle housing part are integrally formed. 2. The axle holding part according to claim 1, wherein a lower surface side of the axle hole of the suspension reinforce portion is connected to an end opposite to the end connected to the axle housing. An axle holding part characterized in that the axle holding part is configured as a tapered surface that gradually decreases downward as it goes. 3. The axle holding component according to claim 1, wherein a component mounting concave / convex portion for mounting the component is provided on an outer surface side. 4. The axle holding component according to claim 3, wherein the component mounting concave / convex portion is a sensor mounting concave portion for mounting an antilock brake system sensor. 5. The axle holding component according to claim 1, wherein the suspension reinforce portion and the axle housing portion are integrally formed by molding a single material pipe by hydraulic bulging. An axle holding part characterized by the above-mentioned. 6. The axle holding component according to claim 2, wherein the tapered surface on the lower surface side of the axle hole of the suspension reinforce portion is one of the suspension reinforce portion and the axle housing portion. An axle holding part, characterized in that when the material pipe is integrally formed by hydraulic bulging, the entire lower surface side of the suspension reinforcement is formed into a flared shape. 7. The axle holding component according to claim 3, wherein the component mounting concavo-convex portion integrates the suspension reinforce portion and the axle housing portion into a single material pipe by hydraulic bulging. An axle holding part characterized in that it is formed by molding simultaneously with molding. 8. The axle holding part according to claim 4, wherein the sensor mounting concave part integrally forms the suspension reinforcement and the axle housing with a single material pipe by hydraulic bulging. An axle holding part characterized by being formed by molding at the same time as molding.