CN212861316U

CN212861316U - Cabin bottom guard plate

Info

Publication number: CN212861316U
Application number: CN202021762776.4U
Authority: CN
Inventors: 杨楠; 杨兴龙; 朱晴; 陈群; 戴鑫鑫; 李启绵; 李正杰
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-02
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to an automotive exterior technical field discloses an engine room bottom protection board, include: the protective plate comprises a protective plate body, a first fixing piece and a second fixing piece, wherein the protective plate body is detachably arranged at the bottom of an engine compartment, the profile of the protective plate body is matched with that of the bottom of the engine compartment, at least one vent hole is formed in the protective plate body, and the vent hole is opposite to an area with positive air pressure in the engine compartment; the grille is detachably installed in the ventilation hole and detachably connected with the guard plate body through a buckle. The utility model provides a backplate is fixed with the laminating of engine compartment at the bottom of the cabin, and the protective effect is reliable and whole car windage is little, has seted up the ventilation hole on the backplate body, and detachably installs the grid on the ventilation hole, under car idling or the low-speed operating mode, can discharge the high-efficient discharge of hot gas flow in the engine compartment, reduces the hot reflux proportion in the air inlet of cabin front end cooling module, guarantees that vehicle air conditioner's refrigeration performance is not influenced.

Description

Cabin bottom guard plate

Technical Field

The utility model relates to an automotive exterior technical field especially relates to an engine room bottom guard plate.

Background

The cabin bottom guard board of the automobile is only seen on the off-road vehicle at first, is used for protecting core components such as an engine when a non-paved road surface runs, and is rarely installed on an original common car or an urban SUV. In recent years, oil consumption regulations are increasingly strict, electric vehicles are gradually raised, and under the large trend of energy conservation and emission reduction, the engine room bottom guard plate can effectively reduce wind resistance, is endowed with new significance, is generally applied to various vehicle types, and is made of materials which are also transited from metal to nonmetal.

An engine, a motor, a front end condenser, a radiator and other cooling modules in an automobile cabin are all heat sources, and the generated heat heats air in the engine cabin. When the vehicle runs at idle speed or low speed, a low-pressure area is formed at the front end of the cooling module due to the suction effect of the cooling fan, hot air in the engine room can easily flow back to enter the cooling module again, and the excessive heat backflow can weaken the heat exchange capacity of the cooling module. Particularly, for the electric vehicle, the cabin has better sealing performance, and hot air is difficult to discharge from the back of the cabin and is easier to flow back to the front end. Therefore, it is necessary to provide air holes on the nacelle backplate to facilitate the discharge of the hot air flow in the nacelle.

The bottom guard plate of the engine room in the prior art is only provided with the vent holes, and the opening forms and the opening positions of the vent holes are not specifically designed. When the air vent is too small, the air vent is not favorable for heat dissipation and leakage, and when the air vent is too large, external foreign matters can enter the engine compartment to damage the core components. In addition, the structure of the engine room bottom guard plate in the prior art is often larger, and the guard plate is not tightly attached to the bottom surface of the engine room, so that the wind resistance of the whole vehicle is increased.

SUMMERY OF THE UTILITY MODEL

Based on above, an object of the utility model is to provide a backplate at bottom of engine room to the ventilation hole design that backplate exists at bottom of the engine room under the solution prior art is unreasonable and causes the big technical problem of whole car windage.

In order to achieve the purpose, the utility model adopts the following technical proposal:

providing a nacelle floor shield comprising:

the protective plate comprises a protective plate body, a first fixing piece and a second fixing piece, wherein the protective plate body is detachably arranged at the bottom of an engine compartment, the profile of the protective plate body is matched with that of the bottom of the engine compartment, at least one vent hole is formed in the protective plate body, and the vent hole is opposite to an area with positive air pressure in the engine compartment;

the grille is detachably installed in the ventilation hole and detachably connected with the guard plate body through a buckle.

As a preferable mode of the engine room floor guard, the material for manufacturing the guard body is felt.

As a preferred scheme of the bottom guard plate of the engine room, the number of the ventilation holes is set to be 1-3.

As a preferable aspect of the cabin floor trim, the shape of the vent hole is rectangular.

As a preferable scheme of the engine room bottom guard plate, the length of the vent hole is between 100mm and 150mm, and the width of the vent hole is between 40mm and 60 mm.

As a preferable scheme of the engine room bottom guard plate, the manufacturing material of the grating is plastic or aluminum alloy.

As a preferable scheme of the bottom guard plate of the engine room, the grating comprises a plurality of grating strips, a plurality of grating holes are formed by surrounding the grating strips, the length of each grating hole is 40-60 mm, and the width of each grating hole is 8-12 mm.

As a preferable scheme of the engine room bottom guard plate, the cross section of the grid strip is in a U-shaped structure, and the width of the grid strip is between 1mm and 5 mm.

As a preferred scheme of the cabin bottom guard plate, at least one pair of mounting lugs are symmetrically arranged on the periphery of the grating, a groove is arranged on the guard plate body opposite to the mounting lugs, a first mounting hole is formed in the groove, a second mounting hole is formed in the mounting lugs, and the buckle is mounted in the first mounting hole and the second mounting hole which are aligned.

As a preferable aspect of the floor fender of the engine compartment, a thickness of the grille and a thickness of the fender body are equal, and when the grille is installed in the ventilation hole, an upper surface and a lower surface of the grille are flush with an upper surface and a lower surface of the fender body, respectively.

The utility model has the advantages that:

the utility model provides a contour of backplate body of backplate at bottom of engine compartment is identical with the contour of engine compartment bottom, has reduced the windage as far as possible when providing the protection for the engine compartment. The air vent has been seted up on the backplate body, detachably installs the grid on the air vent, and under car idle speed or low speed operating mode, the hot gas flow in the engine compartment can be let out from the air vent under the rotation of fan high-efficiently, and the flow direction vehicle bottom reduces the hot reflux proportion in the cabin front end cooling module air inlet, guarantees that vehicle air conditioner's refrigeration performance is not influenced, and the grid has then effectively prevented outer foreign matter of car and has got into in the engine compartment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a protection plate of a cabin provided by an embodiment of the present invention;

FIG. 2 is an elevation view of a grille of a nacelle guard provided by an embodiment of the present invention;

fig. 3 is a side cross-sectional view of a grille of a nacelle guard provided by an embodiment of the present invention.

In the figure:

1. a guard plate body; 11. a vent hole; 12. a groove; 13. a front mounting point; 14. a rear mounting point; 2. a grid; 21. grid bars; 22. grid holes; 23. mounting lugs; 3. and (5) buckling.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 3, the present embodiment provides a cabin bottom guard plate, which is mounted on the bottom of an automobile engine cabin and is used for protecting components such as an engine in the engine cabin and dissipating heat from the engine cabin. The engine room bottom guard plate comprises a guard plate body 1, wherein the contour of the guard plate body 1 is matched with that of the engine room bottom and is detachably arranged on the engine room bottom. The guard plate body 1 is provided with a vent hole 11, and the vent hole 11 is opposite to an area with positive air pressure in the engine compartment so as to efficiently discharge heat in the engine compartment. A grill 2 is detachably mounted in the ventilation hole 11 for preventing external foreign matters from entering the engine compartment, and the grill 2 is detachably coupled to the protector body 1 by means of a clip 3.

Specifically, as shown in fig. 1, one end of the fender body 1 is provided with a plurality of convex front mounting points 13, the other end of the fender body is provided with a plurality of rear mounting points 14, the plurality of front mounting points 13 are fixed on a front bumper of an automobile, and the plurality of rear mounting points 14 are fixed on an underbody fender of the automobile, so as to realize connection of the fender body 1 and the automobile body. Through holes are formed in the front mounting point 13 and the rear mounting point 14, threaded holes are formed in a front bumper and a vehicle body bottom guard plate of the automobile, and the guard plate body 1 is detachably mounted at the bottom of an engine compartment through screws.

In the present embodiment, the material for manufacturing the fender body 1 is preferably felt to reduce noise generated when external foreign objects collide with the fender body 1, and to improve the cushioning effect and reduce vibration.

The ventilation holes 11 are provided with a plurality of ventilation holes 11, and the ventilation holes 11 are all arranged at positions on the guard plate body 1, which are opposite to the area with positive air pressure in the engine compartment. The calculation of the position of the vent hole 11 is chosen as follows: under the working condition of idling or low-speed running, the air flow field of the whole vehicle and the engine cabin is calculated through CFD analysis, an air flow positive pressure area on the upper surface of the engine cabin bottom guard plate is found, and a ventilation hole 11 is formed in the position, opposite to the air flow positive pressure area, of the guard plate body 1.

Optionally, the number of the vent holes 11 is set to be 1-3 to improve the heat dissipation capability. The shape of the ventilation holes 11 is preferably set to be rectangular to facilitate the installation of the grille 2. Further, the length setting of ventilation hole 11 is between 100mm ~ 150mm, and the width is between 40mm ~ 60mm to make ventilation hole 11's area reasonable, guarantee the safeguard function of backplate at the bottom of the cabin under effective radiating prerequisite.

As shown in fig. 2 and 3, the grill 2 has a rectangular structure whose outer peripheral shape matches the shape of the vent holes 11. The grille 2 is composed of a plurality of grille strips 21, wherein one group of grille strips 21 are longitudinally arranged at equal intervals, one group of grille strips 21 are transversely arranged at equal intervals, two groups of grille strips 21 which are longitudinally and transversely arranged surround to form a plurality of rectangular grille holes 22, and hot air in the engine compartment is discharged to the outside of the vehicle body through the grille holes 22. In the present embodiment, the length of the single grid hole 22 is set between 100mm and 150mm, and the width is set between 40mm and 60mm, so as to take account of the ventilation and protection functions.

To improve the structural strength of the grating 2, it is preferable that the cross-sectional shape of the grating strips 21 is provided in a U-shape. Meanwhile, in order to ensure that hot air flows smoothly through the vent holes 11 and reduce the disturbance of the grid strips 21 to the air flow, the width of the grid strips 21 is set within 5 mm. Alternatively, the width of the grill 21 is set between 1mm and 5 mm.

To improve the protective effect, the material of which the grid 2 is made is optionally preferably rigid plastic or an aluminum alloy. Preferably, the material of the grid 2 is a hard plastic which is low in cost and easy to process.

The grille 2 is detachably mounted on the protector plate body 1 by means of the fastener 3. Specifically, at least a pair of mounting lugs 23 are symmetrically arranged on the periphery of the grid 2, the thickness of each mounting lug 23 is slightly smaller than that of the body of the grid 2, a groove 12 is formed in the position, right opposite to the mounting lug 23, of the guard plate body 1, when the grid 2 is mounted on the guard plate body 1, the mounting lugs 23 are embedded in the grooves 12, a first mounting hole and a second mounting hole are formed in the grooves 12 and the mounting lugs 23 respectively, the buckle 3 is mounted in the aligned first mounting hole and the aligned second mounting hole, and accordingly the guard plate body 1 of the grid 2 can be detachably fixed. Buckle 3 includes joint cap and joint post, and when buckle 3 installed in first mounting hole and second mounting hole, joint cap butt was kept away from one side surface of grid 2 in backplate body 1, and joint post interference is installed in first mounting hole and second mounting hole to realize backplate body 1 and grid 2's relatively fixed.

In this embodiment, the thickness of the body of the grille 2 is equal to the thickness of the guard plate body 1, and when the grille 2 is installed in the ventilation hole 11, the upper surface and the lower surface of the grille 2 are flush with the upper surface and the lower surface of the guard plate body 1 respectively, that is, the grille 2 is completely embedded in the guard plate body 1, and the upper surface and the lower surface of the guard plate body 1 have no convex parts. The upper surface of the guard plate body 1 does not protrude outwards, so that the air flow blown to the vent holes 11 from the side surface in the engine compartment can be prevented, and accumulated water in the engine compartment can be discharged after passing through a wading road section; the lower surface of the guard plate body 1 is not concave or convex, so that smooth airflow at the bottom of the vehicle can be ensured, and the wind resistance of the whole vehicle is not increased.

In other embodiments, other forms of fasteners can be used to fix the fender body 1 and the grille 2 relative to each other. Or, the guard plate body 1 and the grating 2 can be fixed by adopting a screw nut mode, and the utility model discloses do not do the restriction here.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A nacelle floor shield, comprising:

the protective plate comprises a protective plate body (1), wherein the protective plate body (1) is detachably mounted on the bottom of an engine compartment, the profile of the protective plate body (1) is matched with that of the bottom of the engine compartment, at least one ventilation hole (11) is formed in the protective plate body (1), and the ventilation hole (11) is opposite to an area with positive air pressure in the engine compartment;

and the grating (2) is detachably installed in the ventilation hole (11), and the grating (2) is detachably connected with the guard plate body (1) through a buckle (3).

2. Nacelle floor covering according to claim 1, characterized in that the material of which the covering body (1) is made is felt.

3. The nacelle floor covering according to claim 1, wherein the number of the vent holes (11) is set to 1 to 3.

4. Nacelle floor covering according to claim 1, characterized in that the ventilation holes (11) are rectangular in shape.

5. The nacelle floor covering according to claim 4, wherein the ventilation holes (11) have a length of between 100mm and 150mm and a width of between 40mm and 60 mm.

6. Nacelle floor covering according to claim 1, characterized in that the material of the grid (2) is made of plastic or aluminium alloy.

7. The nacelle backplate according to claim 1, wherein the grid (2) comprises a plurality of grid bars (21), the grid bars (21) enclosing a plurality of grid holes (22), the grid holes (22) having a length of 40mm to 60mm and a width of 8mm to 12 mm.

8. The nacelle backplate according to claim 7, wherein the cross section of the grid bars (21) is a U-shaped structure, and the width of the grid bars (21) is between 1mm and 5 mm.

9. The nacelle floor shield according to claim 1, wherein at least one pair of mounting lugs (23) are symmetrically arranged on the periphery of the grille (2), a groove (12) is arranged on the shield body (1) opposite to the mounting lugs (23), a first mounting hole is arranged in the groove (12), a second mounting hole is arranged on the mounting lugs (23), and the buckle (3) is mounted in the aligned first mounting hole and the aligned second mounting hole.

10. The nacelle floor shield according to claim 1, characterized in that the thickness of the grille (2) and the thickness of the shield body (1) are equal, and the upper and lower surfaces of the grille (2) are flush with the upper and lower surfaces of the shield body (1), respectively, when the grille (2) is installed in the ventilation hole (11).