JP2011131615A - Front bumper structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve working efficiency when a worker cleans a front window while maintaining an original function of a front bumper (shock absorbing function) with a simple structure. <P>SOLUTION: The front bumper structure includes a gap portion 3 extending in a vehicle width direction on a front surface of a front bumper 2 attached to a front surface of a vehicle, a step plate 4 provided on a lower edge of the gap portion 3 to have a tread portion extending horizontally, and a front bumper upper 5 forming an upper edge of the gap portion 3 and having a U-shape in cross section to open rearward. A plurality of deformed portions are curved in the vehicle width direction to be displaced upwardly by a predetermined width on an opposite surface opposite to the tread portion of the front bumper upper 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a front bumper structure that is attached to the front surface of a vehicle, and more particularly, to a front bumper structure that includes a step portion used by an operator for cleaning a front window of a vehicle.

In general, when cleaning a front window in a large vehicle such as a truck (hereinafter referred to as a vehicle), an operator uses the upper part of the front bumper attached to the lower part of the front of the vehicle as a step. Since the area is small, there is a problem that a sufficient scaffold cannot be secured and workability such as cleaning is not stable.
As a technique for solving such a problem, for example, in Patent Document 1, an intake for taking in traveling wind is formed on the front surface of the front bumper, and the intake is opened and closed. A configuration provided with steps with stays is shown.

JP 10-147194 A

As disclosed in Patent Document 1, when a step is provided on the front bumper for the operator to put his / her foot on when cleaning the front window, a space for the operator's foot to enter is secured above the step. Must-have.
Also, to clean the front window, by forming the above-mentioned steps so as to extend in the vehicle width direction, it is highly convenient in terms of cleaning from one end of the front window to the other.

In the step structure of the front bumper as disclosed in Patent Document 1, not the step is configured to extend to such vehicle width direction.
When the step is formed so as to extend in the vehicle width direction, it is necessary to ensure that the space where the operator's feet above the step enter also extends in the vehicle width direction in the same manner as the step.
On the other hand, even in a large vehicle, the design of the body front part is important in terms of the merchandise of the vehicle, and there is a strong demand for ensuring good design even when steps are provided in the front bumper.

From the viewpoint of design, it is desirable to make the steps provided on the front bumper and the space above the steps as inconspicuous as possible. In particular, the step space above and to ensure a large vertically, because it is easy appearance is deteriorated, the height of the steps above the space to be suppressed as much as possible.
In the step structure of the front bumper disclosed in Patent Document 1, when using a step, the intake can be used as a space above the step, and when the step is not used, the intake can be closed with an openable step. Therefore, while ensuring a sufficient space above the step, it is possible to avoid a situation where a large space is exposed above the step at normal times when the step is not used, thereby ensuring design.

However, in the case of Patent Document 1, a complicated mechanism for providing a step on the front bumper is required, such as supporting a step that can be expanded horizontally only during use (during work) with a flexible stay, and the number of parts increases. In addition, there is a problem in that the manufacturing cost is also increased.
In addition, since a step is not used when the vehicle is running, this step is stored in the intake and forms a part of the front bumper front surface. When a strong member is used, there is a problem that the original function of the front bumper, such as absorbing an impact when the vehicle collides, may be impaired at the step portion.

Therefore, it becomes possible to provide a step to the front bumper at fixed, in this case, compatibility between ensuring of security and design of the step upper space becomes difficult.
Therefore, while ensuring the upper space of the step in the vertical direction at a minimum, it is possible to ensure compatibility with the securing of the design, but as described above, the step and the upper space of the step are formed so as to extend in the vehicle width direction. Therefore, for the convenience of the operator when cleaning the front window, the upper edge of the upper space of the step may work depending on the stepping position when the operator gets on the step due to the vertical restriction of the upper space of the step. If the operator cleans the front window while moving in the vehicle width direction (lateral direction) in this state, the upper edge of the space above the step will be on the upper surface of the shoe. Since the movement is performed while continuously contacting, smooth movement is hindered and workability is deteriorated. In particular, when an operator takes off shoes, etc., and performs the same work with bare feet or socks only, the foot and the upper edge of the space above the step are in continuous contact, which may have unexpected effects. A new problem arises that there is no such thing.

  The present invention has been made in view of such a problem, and improves the workability when the operator cleans the front window while maintaining the original function (shock absorbing function) of the front bumper with a simple configuration. An object of the present invention is to provide a front bumper structure having a stepped portion.

  In order to achieve the above object, the structure of the front bumper of the present invention is a structure of a front bumper attached to the front surface of a vehicle, and includes a gap formed on the front surface of the front bumper extending in the vehicle width direction, and the gap A step plate having a step plate portion provided horizontally at a lower edge portion, and a front bumper upper that forms an upper edge portion of the gap portion and is formed in a U-shaped cross section that opens to the rear. And a plurality of deformation portions curved in a vehicle width direction so as to be displaced upward with a predetermined width are provided on the facing surface portion of the front bumper upper facing the tread plate portion.

Further, the deforming portions may be provided at equal intervals with a pitch of 100 mm or less in the vehicle width direction.
In addition, each deformation portion provided on the facing surface portion of the front bumper upper may be formed so as to be displaced upward as it goes rearward of the vehicle body with respect to the reference surface of the facing surface portion.

  The front bumper is formed separately from a front bumper body having a lower edge portion of the gap portion to which the step plate is mounted, and an upper edge portion of the gap portion. You may make it comprise from the said front bumper upper couple | bonded with the said front bumper main body.

  According to the front bumper structure of the present invention, the deformed portion that is curved so as to be displaced upward with a predetermined width is formed on the facing surface portion of the front bumper upper facing the tread plate portion provided in the gap portion on the front surface of the front bumper. By providing a plurality in the vehicle width direction, it is possible to avoid the opposing surface portion from continuously contacting the operator's shoes or the like inserted into the gap portion. Therefore, even when the height (depth) of the gap is suppressed, the worker can be smoothly moved in the vehicle width direction (lateral direction), and workability such as cleaning of the front window is improved. be able to.

It is a perspective view which shows the structure of the front bumper which concerns on one Embodiment of this invention. It is AA sectional drawing of FIG. 1 which shows the structure of the front bumper which concerns on one Embodiment of this invention. It is a perspective view which shows the front bumper upper which concerns on one Embodiment of this invention. It is a schematic diagram which shows the state which looked at the front bumper upper which concerns on one Embodiment of this invention from back.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.
1 to 3 illustrate an embodiment of the present invention. FIG. 1 is a perspective view showing the structure of the front bumper. FIG. 2 is a cross-sectional view taken along the line AA of FIG. Figure 3 is a perspective view showing a front bumper upper, FIG. 4 is a schematic view showing a state viewed its front bumper upper from behind.

Structure of the front bumper according to the present embodiment, as shown in FIG. 1, a front bumper 2, a step plate 4 is configured with a front bumper upper 5.
As shown in FIGS. 1 and 2, the front bumper 2 is attached to the lower part of the front surface of the vehicle. The front bumper 2 has a right side portion 2 a that forms a right end portion and a left side when the front bumper 2 is viewed from the back side. a left side portion 2b to form the end, and a central front portion 2c provided between the right side portion 2a and the left side portion 2b.

As shown in FIGS. 1 and 2, the upper portion of the central front portion 2c falls down at a predetermined depth D downward from the right edge 3d, the left edge 3e, and the right edge 3d and the left edge 3e. Thus, a right vertical edge 3a, an edge 3b, and a left vertical edge 3c constituting the gap 3 are formed between the front bumper upper 5 described later.
In addition, attachment members (not shown) for attaching a front bumper upper 5 to be described in detail later are provided on both left and right ends of the back surface of the central front portion 2c.

A plurality of fastening holes (not shown) for fastening bolts to a step plate portion 4b of a step plate 4 to be described later are formed in the edge portion 3b corresponding to the lower edge portion of the gap portion 3.
The predetermined depth D of the gap 3 is a value sufficiently smaller than the height of the front bumper 2 from the viewpoint of securing the original function of the bumper such as shock absorption and from the viewpoint of securing good design. It is preferable that

As shown in FIG. 2, the step plate 4 is formed in a flat plate having an L-shaped cross section, and includes a front plate portion 4a and a tread plate portion 4b provided substantially perpendicular to the front plate portion 4a.
Further, as shown in FIG. 2, the step plate 4 uses a bolt to fasten a bolt insertion hole (not shown) provided in the tread plate portion 4 b and a fastening hole provided in the lower edge portion 3 b of the gap portion 3. This is fixed to the front bumper 2.

As shown in FIGS. 2 and 3, the front bumper upper 5 is formed in a U-shaped cross section, and a right fixing stay 7a and a left fixing stay 7b are provided at the ends thereof.
Further, the front bumper upper 5 is configured such that the right-side fixing stay 7a and the left-side fixing stay 7b are bolted to mounting members (not shown) provided on the back surface of the central front portion 2c. It is attached to the front bumper body 2 so that the character-shaped opening is at the rear of the vehicle. That is, the front bumper upper 5 closes the open portion above the gap portion 3 and is mounted so as to constitute the upper edge portion of the gap portion 3, so that the rigidity of the front bumper 2 itself in the vehicle width direction is maintained. .

  2 and 3, of the outer surfaces of the front bumper upper 5, the outer surface facing downward when the bumper extension 5 is attached to the front bumper 2, that is, the step plate portion 4 b of the step plate 4. A plurality of deformed portions 6 formed to be curved so as to be displaced upward with a predetermined width W are formed at equal intervals in the vehicle width direction at a predetermined pitch P (for example, P = 100 mm). Is provided. As shown in FIGS. 2 and 4, the deforming portion 6 is formed so as to be displaced upward with respect to the reference surface of the facing surface portion 5 a as it goes rearward of the vehicle body.

In consideration of the width of the shoe etc. of the worker, when the worker rides on the tread portion 4b and moves in the vehicle width direction (lateral direction), the facing surface portion 5a continuously contacts the upper surface of the shoe etc. In order to avoid such a state, the predetermined pitch P at which the deformed portions 6 are provided is preferably a numerical value of 100 mm or less (P ≦ 100 mm).
Moreover, it is preferable that the predetermined width W of the deformation | transformation part 6 is also a numerical value (W <= 100mm) of 100 mm or less.

With the configuration as described above, the front bumper structure including the step portion in the present embodiment has the following operations and effects.
That is, the step plate portion 4b of the step plate 4 is used as a step when the operator cleans the front window or the like, but the operator faces the opposing surface portion 5a of the front bumper upper 5 facing the step plate portion 4b. In order to avoid that the upper surface of the worker's shoes or the like is in continuous contact with the facing surface portion 5a when moving in the vehicle width direction (lateral direction), the upper side with a predetermined width W (W ≦ 100 mm) a plurality of deformable portions 6 that are bent to form so as to be displaced are provided at regular intervals with a predetermined pitch P in the vehicle width direction (P ≦ 100 mm).

  Therefore, even when the predetermined depth D of the gap portion 3 is formed substantially equal to the height of the toe portion of the worker's shoes or the like, in the vehicle width direction (lateral direction) on the worker's tread plate portion 4b. Can be moved smoothly, improving workability such as cleaning the front window, and even if the operator takes off his shoes and wears barefoot or socks only The design of the front bumper 2 can be ensured without fear of unexpectedly affecting the legs of the person.

Further, the step board portion 4b without constituting a front surface of the front bumper 2 is horizontally extended to the lower edge 3b of the gap 3.
Accordingly, without damaging the bumper original function such to absorb impact on the front of the front bumper 2, the front bumper 2 can be provided with steps.
[Others]
In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably and can implement.

For example, in the above-described embodiment, the gap portion 3 has been described as being provided at one location of the front bumper 2, but it is not necessarily required to be at one location, and may be provided at a plurality of locations.
Further, the upper edge of the gap 3 is not necessarily constituted by the front bumper upper 5 provided separately from the front bumper 2, and the front bumper 2 is partially opened to be provided on the front bumper 2 itself. It may be.

  Further, the vehicle is not limited to a large vehicle such as a truck, but can be applied to a bumper of a normal vehicle or the like.

2 Front bumper 3 Gap 4 Step plate 4b Tread plate 5 Front bumper upper 5a Opposing surface 6 Deformation

Claims (4)

A structure of a front bumper attached to the front of the vehicle,
A gap formed on the front surface of the front bumper extending in the vehicle width direction;
A step plate provided at a lower edge portion of the gap portion and having a step plate portion extending horizontally;
A front bumper upper that forms the upper edge of the gap and is formed in a U-shaped cross section that opens to the rear;
A structure of a front bumper, wherein a plurality of deformed portions curved in a vehicle width direction so as to be displaced upward with a predetermined width are provided on an opposing surface portion of the front bumper upper facing the tread plate portion. The structure of the front bumper according to claim 1, wherein the deforming portions are provided at equal intervals with a pitch of 100 mm or less in the vehicle width direction. 2. The deformable portion provided on the facing surface portion of the front bumper upper is formed so as to be displaced upward as it goes rearward of the vehicle body with respect to a reference surface of the facing surface portion. Or the structure of the front bumper of 2. The front bumper is
A front bumper body having a lower edge of the gap and to which the step plate is mounted;
4. The front bumper upper having the upper edge of the gap and formed separately from the front bumper main body and coupled to the front bumper main body. The structure of the front bumper of Claim 1.

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