JP6929151B2 - Vehicle side rails - Google Patents

Description

The present invention relates to a vehicle side rail that constitutes a vehicle frame.

It is known that the web of the side rails that make up the frame used for commercial vehicles such as trucks will form mounting holes for mounting parts such as various equipment, piping, wiring, fuel tanks, and battery carriers that are unique to the installation. (See Patent Document 1).
The mounting holes for the web are formed at predetermined positions on the web for each side rail in consideration of the mounting specifications, or a large number of mounting holes of the same size are randomly formed on the web in advance to satisfy any mounting specifications. I'm doing it.

JP-A-2010-58638

However, the side rails (non-modular type) that form each mounting hole on the web according to the mounting specifications of the parts have all the mounting holes formed according to the mounting specifications of the parts each time, so the number of variants (differences in specifications) increases. , The burden of manufacturing cost increases. In addition, if a large number of mounting holes of the same size are randomly formed on the web ( modular type ), there are many unnecessary holes that are not used for mounting parts, and there is a problem that the frame strength is impaired.

Therefore, an object of the present invention is to provide a vehicle side rail capable of ensuring frame strength while reducing barriers and manufacturing costs.

An aspect of the present invention is a vehicle side rail having a web formed with mounting holes for mounting components mounted on a vehicle and flanges provided at both ends of the web, and the web is a flange-side end. The central region includes a partial region and a central region sandwiched between the end regions. In the central region, mounting holes are formed in a pattern arrangement having a predetermined regularity, and in the end region , mounting holes for mounting parts are provided. an area provided in accordance with the component specifications and shall mounting holes are made form larger than the mounting hole formed in the central region. According to the present invention, in the web of the side rail for a vehicle, the end region on each flange side suitable for mounting a heavy component becomes a region in which a mounting hole is appropriately formed according to the mounting specifications of the component, and the end. The central area sandwiched between the parts is an area where piping, wiring and other lightweight parts can be freely attached.
As a result, in the central region of the web, lightweight parts can be freely mounted by using the mounting holes of the preset pattern arrangement. In the edge region of the web, heavy parts can be mounted only with the mounting holes formed according to the mounting specifications of the parts.
That is, the mounting holes formed in the central region of the web reduce the barriers of the vehicle side rails and reduce manufacturing costs. Moreover, since only mounting holes used for mounting parts are formed in the end region of the web, there are no unnecessary mounting holes, and unnecessary decrease in strength of the side rail can be suppressed.
Therefore, vehicle side rails can ensure frame strength while reducing variants and manufacturing costs.
Further, in the central region, the preset pattern arrangement may be staggered.

According to the present invention, it is possible to provide a vehicle side rail capable of ensuring frame strength while reducing barriers and manufacturing costs.

The perspective view which shows the side rail for a vehicle which is the aspect which concerns on one Embodiment of this invention. FIG. 3 is a cross-sectional view of a vehicle side rail along the line AA in FIG. The side view of the side rail for a vehicle which explains the process of forming the mounting hole which is required by the mounting specification of a part later in the side rail for a vehicle which the mounting hole is formed by the pattern arrangement.

Hereinafter, the present invention will be described with reference to one embodiment shown in FIGS. 1 to 3.
FIG. 1 shows a ladder-shaped frame applied to a commercial vehicle (vehicle) such as a truck for the purpose of transportation, FIG. 2 shows a cross section of a side rail constituting the frame, and FIG. 3 shows mounting on the side frame. It shows how to form a hole.

That is, reference numeral 3 in FIG. 1 indicates a pair of side rails 3 (corresponding to the vehicle side rails of the present application) extending in the vehicle front-rear direction constituting the frame 1. Each of the side rails 3 is composed of a rail member having a groove-shaped cross section. Specifically, the side rail 3 is configured to have a plate-shaped web 3a as shown in the cross-sectional view of FIG. 2 and a pair of flanges 3b provided in parallel at both ends of the web 3a. NS. By the way, the pair of side rails 3 are arranged with the openings facing inward.

The ladder-shaped frame 1 is configured by providing cross members 5 at a plurality of positions between the pair of side rails 3 as shown by a two-dot chain line.
On the side surface of each side rail 3 forming a side portion of the frame 1, parts mounted on the vehicle, such as various equipment specific to the installation, piping, wiring, air tank, fuel tank, suspension bracket, and battery carrier (none of which are shown). ) And other parts are installed. Therefore, the web 3a of each side rail 3 is provided with two types of mounting holes, such as a mounting hole 7a having a small diameter and a mounting hole 7b having a diameter larger than that of the mounting hole 7a, in order to mount these various parts.

Each side rail 3 of the present embodiment is devised to reduce variances (differences in specifications), manufacturing cost, and rigidity depending on how the mounting holes 7a and 7b are formed. Since the same structure is used for each side rail 3, one side rail 3 will be described here.

That is, of the web 3a of the side rail 3, the web portion on the flange 3b side connected to each flange 3b is suitable for mounting heavy parts.
Therefore, in the web 3a of the side rail 3, for example, as shown in FIGS. 1 and 2, the entire flange except for the front end portion γ of the vehicle, which has a tapered shape with many restrictions, is suitable for mounting heavy parts. It can be divided into an end region α on the 3b side and a band-shaped central region β (region surrounded by the alternate long and short dash line) indicated by the alternate long and short dash line sandwiched between these end regions α. Incidentally, the web 3a may include the end region α and the central region β.

The central region β of the web 3a is an region where light parts such as pipes, wirings or other lightweight parts can be freely attached. Therefore, in the central region β, a large number of mounting holes 7b having a small diameter are formed in advance in a pattern arrangement having a predetermined regularity. For example, a large number of small-diameter mounting holes 7b are arranged in a staggered pattern at predetermined intervals in advance, and are continuously provided over the entire length of the side rail 3.

Further, the end region α of the web 3a is a region where heavy parts such as suspension brackets, fuel tanks, and battery carriers can be attached. Further, each end region α is a mounting hole having a large diameter suitable for mounting a heavy component at a predetermined position of the end region α in consideration of the mounting specifications of parts such as a fuel tank and a battery carrier. It is a tailor-made area that forms 7a. That is, for the mounting holes 7a for heavy-weight parts, the side rail 3 on which the mounting 7b is formed in advance is used as a material, and the mounting holes 7a are formed in the end region β by post-processing according to the mounting specifications of the parts. It is formed by the method.

When the mounting holes 7a and 7b are formed in the side rails 3, for example, as shown in FIG. 3A, the mounting holes 7b having a small diameter are arranged in a predetermined pattern arrangement (here, in this case) in the central region β of the web 3a in advance. A side rail 3 formed in a staggered arrangement) is prepared.
At this stage, the mounting holes 7b used for mounting piping, wiring, and other lightweight parts are already formed in a predetermined pattern arrangement, so they will have a function that can be commonly used in any vehicle model. ..

After that, as shown in FIG. 3B, in consideration of the mounting specifications of heavy parts, for example, parts such as a fuel tank and a battery carrier, at each end region α of the web 3a, the positions are set to a predetermined position. Each hole is machined to form a mounting hole 7a with a large diameter. At this time, a mounting hole 7a having a large diameter is also formed in the tapered portion at the front portion of the side rail 3. Here, mounting holes 7a are provided at predetermined positions on the front side, the center side, and the rear side of the side rail 3 in the longitudinal direction.

Various parts are mounted on the side rails 3.
At this time, if a heavy component such as a fuel tank or a battery carrier is attached to a mounting hole 7a already formed in the end region α according to the component specifications via a bracket (not shown), the component can be installed. ..
Further, pipes, wirings or other lightweight parts extending from various devices are attached to the mounting holes 7b formed in the central region β via brackets and locking tools (not shown), and along the side rail 3. When installed, various pipes and wiring can be routed.

As described above, in the side rail 3, the end region α on the flange 3b side of the web 3a is set as a region for appropriately forming the mounting holes 7a according to the mounting specifications of the parts, and the central region of the web 3a sandwiched between the end regions α. By using the mounting holes 7b arranged in a predetermined pattern arrangement to set β as an area where piping, wiring, or other lightweight parts can be freely mounted, the central region β of the side rail 3 includes vehicle types and parts. The parts can be mounted in any position and posture by utilizing the common pattern arrangement of the mounting holes 7b regardless of the mounting position of.

In particular, since the mounting holes 7b in the central region β can mount many lightweight parts with the same pattern arrangement, not only the variance (difference in specifications) of the side rail 3 is reduced, but also the side rails are reduced. The manufacturing cost of 3 can also be suppressed.
Moreover, only the mounting holes 7a are formed in the end region α in consideration of the mounting specifications of the parts. That is, since the mounting holes 7a are formed in the required positions in the required quantity, unnecessary mounting holes are not formed in the end region α, and unnecessary deterioration of the rigidity and strength of the web is suppressed.

Therefore, the side rail 3 reduces the variance and the manufacturing cost by adopting the end region α in which the mounting hole 7a is formed and the central region β in which the mounting hole 7b is formed in the pattern arrangement in consideration of the mounting specifications of the parts. At the same time, the frame strength can be secured.

The present invention is not limited to the above-described embodiment, and may be varied and implemented within a range that does not deviate from the gist of the present invention. For example, in the above embodiment, a mounting hole having a small diameter is formed in a staggered pattern arrangement in the central region of the web, but the present invention is not limited to this, and a mounting hole having a small diameter is formed in another pattern arrangement. You may.

1 frame 3 side rails (vehicle side rails)
3a Web 3b Flange 5 Cross member 7a, 7b Mounting hole α End area β Central area

Claims (4)

A vehicle side rail provided with a web having mounting holes for mounting components mounted on the vehicle and flanges provided at both ends of the web.
The web includes an end region on the flange side and a central region sandwiched between the end regions.
In the central region, the mounting holes are formed in a pattern array with predetermined regularity.
It said end region is a region in which mounting holes for mounting the component is provided in accordance with the specifications of the components, that mounting holes are made form greater than the said mounting hole formed in a central region Characterized side rails for vehicles. The vehicle side rail according to claim 1, wherein the component attached to the central region is lighter than the component attached to the end region. The vehicle side rail according to claim 1 or 2, wherein piping or wiring is attached to the central region. The vehicle side rail according to any one of claims 1 to 3, wherein the pattern arrangement is staggered.

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