JP2019151199A - Rear part structure of cab and vehicle - Google Patents

Abstract

To inhibit heat from an engine from affecting, for example, mounting members on the rear side of a cab in a vehicle equipped with the cap provided above the engine.SOLUTION: The disclosed technique relates to a rear part structure RS of a cab 10 provided above an engine 14. The rear part structure RS includes a cover member 30 provided under a back panel 22 located at a rear end of the cab 10 and is configured to allow a lower area of the cab 10 to be separated from a rear area of the lower area.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to a rear structure of a cab provided above an engine and a vehicle including a cab to which the cab is applied.

  A cab-over type vehicle in which a cabin (cab) is disposed above an engine is widely used. For example, there is a truck having a loading platform behind the cab. In such a cab-over type vehicle, for example, Patent Document 1 proposes improving the structure of the rear surface portion of the cab. Note that the rear surface structure of the cab of Patent Document 1 is directed to securing the strength of the rear surface of the cab.

JP 2017-159707 A

  By the way, there is a concern that the heat of the engine disposed below the cab in the cab-over type vehicle affects the rear of the cab. For example, in such an engine, an exhaust purification device may be provided around the engine body. That is, such an exhaust purification device is located below the cab. Such an exhaust purification device may become high temperature, and there is a concern about the influence of the heat on a body member (for example, a loading platform).

  Therefore, an object of the technology of the present disclosure is to suppress, for example, a vehicle including a cab provided above an engine, from affecting the body member behind the cab, for example, heat from the engine below the cab. .

  In order to achieve the above object, the technology of the present disclosure is a rear structure of a cab provided above an engine, and includes a cover member provided below a rear end section forming member of the cab, the cover member Provides a rear structure of the cab configured to separate the lower region of the cab from the region behind the lower region.

  Preferably, the cover member is provided so as to protrude rearward from the rear end section forming member so as to partition and form an opening opening upward in the rear of the rear end section forming member of the cab. Yes.

  The cover member may have at least one of a heat insulating material and a heat shielding material.

  The technology of the present disclosure also exists in a vehicle including a cab to which the rear structure of the cab is applied. In this vehicle, the cover member may be provided above a chassis frame that supports the engine.

  Moreover, in the said vehicle, the said cover member is good to be provided in the front of the mounting member behind the said cab so that it may protrude behind the said rear-end part division formation member.

  According to the rear part structure of the cab according to the above-described technique of the present disclosure, since the above-described configuration is provided, it is possible to suppress heat from the engine below the cab from affecting, for example, a mounting member behind the cab.

It is the schematic diagram seen from the vehicle left side of the cab over type vehicle provided with the cab to which the rear part structure of the cab which concerns on one Embodiment in the technique of this indication was applied. It is the schematic diagram which looked at the cab over type vehicle of FIG. 1 from the upper side. It is the figure which looked at the cab in the vehicle of FIG. 1 from diagonally backward. It is a figure for demonstrating the flow of the airflow in the cab of FIG. It is a figure for demonstrating the modification of the rear part structure of the cab of FIG.

  Hereinafter, embodiments according to the technology of the present disclosure will be described with reference to the accompanying drawings. The same parts (or configurations) are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated. Note that front and rear, left and right, and top and bottom in the embodiments described later are based on the vehicle in the state of FIG.

  1 and 2 show a cab-over type vehicle 12 including a cab 10 to which a rear structure (hereinafter simply referred to as “rear structure”) RS of a cab according to the present embodiment is applied. FIG. 1 is a schematic view of the vehicle 12 viewed from the left side of the vehicle, and FIG. 2 is a schematic view of the vehicle 12 viewed from the upper side.

  The vehicle 12 includes a chassis frame 16 and a cab 10 attached on the chassis frame 16. The chassis frame 16 has a pair of side frames 16a (see FIGS. 1 and 2) extending in the front-rear direction of the vehicle 12, and a plurality of cross members 16b (see FIG. 2) passed between the side frames 16a. The cab 10 is provided so as to be positioned at the foremost side of the vehicle. On the chassis frame 16 behind the cab 10, a loading platform 18 (which is a bodywork member) is attached. That is, in this embodiment, the vehicle 12 is a truck. The body member is not limited to the loading platform 18, and the body member may be, for example, a tank.

  The cab 10 is disposed above the engine 14 supported by the chassis frame 16 (via a mounting member (not shown)). As shown in FIG. 3, the cab 10 includes a side panel (side end section forming member) 20 that partitions and forms both side ends, and a back panel (rear end section forming member) 22 that partitions and forms the rear end. And a floor panel (lower end section forming member) 24 (see FIG. 1) for partitioning and forming the lower end portion thereof, and an upper panel 26 for partitioning and forming the upper end portion thereof. The rear panel 22 is provided with the rear window 22a, but the rear window 22a may not be provided there. As shown in FIG. 1, the engine 14 is positioned below the floor panel 24 of the cab 10.

  In the engine 14, the exhaust purification device 14 a (which is one of the engine constituent members) is provided substantially integrally on the side of the engine main body (here, right) of the engine 14. Therefore, in addition to the engine body of the engine 14, the exhaust purification device 14 a is also located below the cab 10. An air flow (for example, traveling wind) flows into the cab 10 from the front grill at the front end on the lower side of the front window, and can pass around the engine 14 in the vehicle front-rear direction. This air flow can be more prominent during travel of the vehicle 12. The engine 14 is cooled by this air flow, but the air that has passed through the engine 14 is hot. A cargo bed 18 is located at a point (backward) where such a high-temperature air flow passes under the cab 10. On the other hand, the lower part of the front end portion of the loading platform 18 is close to the engine 14 (including the exhaust purification device 14a), and even when such an air flow is not generated, the engine 14 (particularly the exhaust purification device 14a). May be affected by radiant heat from Such an influence of heat is not preferable in terms of, for example, the life of the bodywork member (constituent member), deterioration in performance, deterioration in appearance due to deterioration, and the like. Therefore, here, the rear structure RS according to the present embodiment is applied to the cab 10 so as to suppress such heat from affecting the loading platform 18 and the like behind the cab 10.

  As shown in FIGS. 1 to 3, the cab 10 is provided with a cover member 30 that substantially constitutes the rear structure RS. The cover member 30 is configured (particularly shaped) so as to separate a lower region (lower space) S1 of the cab 10 where the engine 14 exists from a rear region (rear space) S2 behind the lower region S1. ) Here, the rear region S2 is specifically a region where the front end of the loading platform 18 is present. In addition, the cover member 30 is particularly designed here so that it can escape by changing the direction of the air flow from the front of the cab 10 (especially, the air flow flowing so as to pass through the floor panel 24 below the cab 10). It is shaped to allow it to flow in a direction (e.g. from the space between the cab 10 and the loading platform 18) and to pass suitably.

  As shown in FIG. 3, the cover member 30 is a member having a substantially U-shaped cross section (not shown, but having a cross section in a virtual plane extending in a substantially horizontal (substantially front-rear left-right direction)), and opens to the vehicle front side. It arrange | positions so that it may close to the vehicle rear side. The cover member 30 is disposed so as to be substantially closed also on both side portions of the vehicle. Accordingly, the cover member 30 is provided to protrude rearward from the back panel 22 in front of the loading platform 18 behind the cab 10. Here, more precisely, the cover member 30 is formed in a square shape and has a substantially rectangular cross section. However, the cover member 30 may be formed to be rounded so as to have a U-shaped cross section.

  Further, as shown in FIG. 2, the cover member 30 has a width (vehicle width) of the engine 14 so that the cover member 30 separates the engine 14 in the lower region (space) S1, in particular, the rear region S2 behind the engine. It is configured to have a width wider than the length in the width direction.

  Here, the cover member 30 is made of a steel plate. Therefore, the cover member 30 can firmly separate the lower region of the cab 10 from its rear region. The cover member 30 can be made of various materials, and various heat insulating materials or heat shielding materials can be attached thereto. Accordingly, the cover member 30 may be excellent in heat insulation characteristics or heat insulation characteristics. The cover member 30 can be made of a metal material other than steel (for example, an aluminum alloy or a magnesium alloy), a resin material, or a composite material (for example, FRP). And the plate-shaped member which made glass wool the main material, for example may be affixed on the surface of a cover member. For example, the cover member 30 may be made of an aluminum alloy, and a plate-like member mainly made of glass wool may be attached to the surface thereof. In this case, the cover member 30 is relatively lightweight, and has excellent heat insulation and heat shielding properties. Furthermore, the cover member 30 is not limited to being attached with a heat insulating material or a heat shielding material on the surface thereof, and a coating agent (coating material) having excellent heat insulating properties or heat shielding properties may be applied.

  As shown in FIG. 3, the cover member 30 is provided below the back panel 22. However, as shown in FIG. 1, the cover member 30 is provided so as to be positioned above the chassis frame 16 in the vertical direction of the vehicle. In addition, in FIG. 3 (and FIG. 4), the engine 14 is shown notionally and the chassis frame 16 and the loading platform 18 are not shown.

  Such a cover member 30 is attached and fixed to the cab 10 using a bracket member 32. As shown in FIG. 3, the bracket member 32 is used to fix the cover member 30 to the cab 10 by bolting which is a mechanical fixing means. In the present embodiment, one end portion of the bracket member 32 is fixed by bolting to a joint portion (not shown) inside the side panel 20 on the side of the cover member 30, and the other end portion is fixed to the cover member 30. It is fixed by bolting to the side wall. However, the bracket member 32 may be provided, for example, so as to connect them between a joining portion (not shown) of the back panel 22 and the cover member 30.

  As described above, the cover member 30 attached in this manner is a member having a substantially U-shaped cross section, and is provided so as to protrude rearward from the back panel 22. Therefore, the cover member 30 substantially defines and forms the opening 30a with the back panel 22 of the cab 10 (see FIGS. 2 and 3). The opening 30 a opens upward at the rear of the back panel 22 of the cab 10. Therefore, the opening 30a can be referred to as an upper opening. In addition, since the cover member 30 opens also on the lower side, the portion may be referred to as an opening, and hereinafter referred to as a lower opening. The cover member 30 may be configured such that the lower side of the cover member 30 is closed, and the cover member 30 may partition only the upper opening 30a with the cab 10.

  The flow of airflow through the upper opening 30a and the lower opening will be described with reference to FIGS. As indicated by an arrow in FIG. 1, the air flow that flows from the front grill at the front end of the cab 10 to the lower side of the cab 10 passes around the engine 14 and reaches the cover member 30. The air flow reaching the cover member 30 collides with the concave inner wall surface 30b (see FIG. 2) of the cover member 30, changes its direction, and flows out from the upper opening 30a and / or the lower opening. As a result, the air flow does not directly collide with the loading platform 18, but flows from the space (gap) between the cab 10 and the loading platform 18 to the upper side of the vehicle 12, or preferably below the loading platform 18. Can pass through. Therefore, it can suppress that the loading platform 18 receives the heat from such an air flow directly.

  Further, as already described, the cover member 30 may have a plate-like member made mainly of glass wool attached to the surface thereof. In this case, the cover member 30 is excellent in heat insulation. Therefore, it can suppress that cover member 30 itself is heated with the heat from such an air flow. Furthermore, since such a cover member 30 is provided between the engine 14 and the loading platform 18 so as to separate them, heat from engine components such as the exhaust purification device 14a of the engine 14 is directly applied to the loading platform 18. Therefore, it is possible to suppress the influence on it.

  As described above, according to this embodiment, the cover member 30 having the above-described configuration is provided below the back panel 22 of the cab 10. As a result, the cover member 30 substantially separates the cargo bed 18 (in the rear region S2 behind the lower region of the cab 10) from the engine 14 below the cab 10 (in the lower region S1 where the cab 10 is present). It is possible to suppress the heat from reaching the loading platform 18 and affecting it. Furthermore, the cover member 30 can escape from the upper opening 30a or the lower opening by suitably changing the direction of the air flow from the front side of the cab 10. Therefore, it is possible to suppress the air flow (for example, traveling wind) obtained from the engine 14 such as the exhaust gas purification device 14a (as one of the engine components) from directly colliding with the loading platform 18. is there. Therefore, by applying the rear structure RS of the present embodiment to the cab 10 (provided above the engine 14), heat from engine components such as the exhaust purification device 14a is prevented from affecting the cargo bed 18. It becomes possible. Thus, the cover member 30 can function as a heat protector.

  The cover member 30 can also exhibit a noise suppressing function. That is, the cover member 30 is also provided as a noise suppression member. For example, a sound absorbing material may be attached to the cover member so as to further enhance the noise suppression function of the cover member 30.

  In addition, this indication is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this indication, it can change suitably and can implement.

  For example, in the above embodiment, the upper opening 30a that is partitioned between the cab 10 by providing the cover member 30 is merely an opening. The opening 30a may further include a member (flow directing member) 40 that determines the direction of airflow. An example is shown in FIG. In FIG. 5, a plurality of flow directing members 40 are provided in the upper opening 30 a that is defined on the upper side of the cover member 30. The flow directing member 40 is an elongated plate-like member extending in the vehicle width direction. The flow directing member 40 can also be made of the same material as that of the cover member 30, but may be movably provided from a lighter material (for example, a resin material). However, the flow directing member 40 may be fixed to the cover member 30. The flow directing member 40 may be provided as a reinforcing member.

  Moreover, in the said embodiment, the cover member 30 was comprised from the member of the cross-sectional substantially U shape, and the upper opening part 30a opened upwards between the cabs 10 was substantially dividedly formed. However, the cover member 30 may be formed by partitioning such an upper opening only by the cover member 30. In addition, the technique of this indication does not exclude that the cover member 30 is comprised so that only the lower opening part opened downward may be dividedly formed between the cab 10 or itself.

  In the above embodiment, the cover member 30 is fixed to the cab 10, but may be fixed to other than the cab 10. For example, the cover member 30 may be fixed to the chassis frame 16 to form a rear structure of the cab. Further, the cover member 30 may be fixed to the existing mounting portion (not shown) of an existing member provided on the back panel 22 or its periphery by a mechanical fixing means. The cover member 30 may be fixed by other fixing means, for example, metallurgical fixing means such as welding.

  Note that the cover member 30 does not hinder the arrangement of the engine 14, the power transmission device, and the like, and suppresses the heat in the lower region S 1 of the cab 10, particularly the heat from the engine 14, from reaching the rear region S 2. It is good to design according to.

RS cab rear structure 10 cab 12 vehicle 14 engine 16 chassis frame 18 loading platform 22 back panel 24 floor panel 30 cover member 30a opening 32 bracket member

Claims (5)

A cab rear structure provided above the engine,
A cover member provided below the rear end section forming member of the cab,
The cover member is configured to separate a lower area of the cab from an area behind the lower area.
The rear structure of the cab. The cover member is provided to protrude rearward from the rear end section forming member so as to partition and form an opening that opens upward at the rear of the rear end section forming member of the cab.
The rear structure of the cab according to claim 1. The cover member has at least one of a heat insulating material and a heat shielding material,
The rear structure of the cab according to claim 1 or 2. A vehicle including a cab to which the rear structure of the cab according to any one of claims 1 to 3 is applied,
The cover member is provided above a chassis frame that supports the engine.
vehicle. A vehicle including a cab to which the rear structure of the cab according to any one of claims 1 to 3 is applied,
The cover member is provided so as to protrude rearward from the rear end section forming member in front of the body member behind the cab.
vehicle.

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