CN109072829A

CN109072829A - suction pipe

Info

Publication number: CN109072829A
Application number: CN201780024778.8A
Authority: CN
Inventors: 木村昌裕; 松桥高广
Original assignee: Hino Motors Ltd
Current assignee: Hino Motors Ltd
Priority date: 2016-04-19
Filing date: 2017-02-15
Publication date: 2018-12-21
Also published as: WO2017183268A1

Abstract

The present invention relates to the suction pipes (6) for sucking extraneous gas from the air suction inlet (2) towards vehicle-width direction outer openings of head (4a) as engine air-breathing, the head (4a) climb to vehicle driver's cabin upper surface, aforementioned air suction inlet (2) are open with avoiding the surface of pipe section (4b), the pipe section (4b) extends downward from the rear lower surface of aforementioned head (4a) along the rear surface of aforementioned driver's cabin, the air suction inlet (2) afterwards square end towards forming step on the inside of vehicle-width direction, and, it is formed guide portion (7), aforementioned guide portion (7) makes continuous between the step by the concave curved surface for being in plan view in arc-shaped.

Description

Suction pipe

Technical field

The present invention relates to suction pipes.

Background technique

In general, the haulage vehicle of the large size such as truck is compared with ordinary passenger car, on the road that the situation that do not mat formation is poor The chance of upper traveling is more, therefore the air-breathing as engine, and preferably not sucking contains the Near Ground of more dust Extraneous gas, but suck clean extraneous gas apart from ground part sufficiently high, in addition, Near Ground be also possible to by Rainwater, the accumulated snow splash sucks together, therefore is preferably only reliably inhaling extraneous gas at the part sufficiently high of ground Enter.

Therefore, in large-scale haulage vehicle, the suction extended along the vertical direction longlyer is installed in the rear surface of driver's cabin Feed channel, but as shown in Figure 1, in recent years it has been proposed that a kind of suction pipe 3, the suction pipe 3 are more dry in order to suck Net extraneous gas and the opening of mouth 2 is drawn air at the upper surface of driver's cabin 1 herein in the case where example illustrated, Aforementioned suction pipe 3 is configured to have the pipe main body 4 for being installed on the rear surface of driver's cabin 1 and forming shell mechanism and covering Shutter 5 of the aforementioned air suction inlet 2 to prevent rainwater from falling directly into and (equally also snow is prevented to enter).

According to the suction pipe 3, less be fully cooled is influenced by the hot gas from engine room by sucking Extraneous gas improves the charging efficiency of the air-breathing to each inflator of engine, also, by sucking completely in higher position Extraneous gas realizes the long lifetime of air purifier, obtains the operating condition for chronically maintaining the pressure loss few to realize The advantages of raising of specific fuel consumption.

In addition, as to the existing technical literature information for being related to the general prior art of the invention and being illustrated, There are following patent documents 1 to 4 etc. of applicant same as the present invention application.

Patent document

Patent document 1: Japanese Utility Model logs in No. 2562732 bulletin

Patent document 2: Japanese Unexamined Patent Publication 2002-310022 bulletin

Patent document 3: No. 5485685 bulletins of Japanese Patent No.

Patent document 4: No. 5697941 bulletins of Japanese Patent No..

Problems to be solved by the invention

However, being drawn air into the suction pipe 3 of the opening of mouth 2 at the upper surface of driver's cabin 1, pipe main body 4 is configured to have It is standby to climb to upper surface and by aforementioned air suction inlet 2 from the back-surface side of driver's cabin 1 towards on the outside of vehicle-width direction (in Fig. 1 Left side) opening head 4a and rear lower surface from head 4a extend downward and along aforementioned driver's cabin 1 after The pipe section 4b on surface, but there are following possible: want the extraneous gas that the pipe section 4b in downstream side is flowed into shortest path It is biased to the rear side of air suction inlet 2, flow velocity is also got higher herein, is easy sucking rain, snow.

Summary of the invention

The present invention makes in view of the above circumstances, and its purpose is to provide one kind can prevent rain, snow from entering to The suction pipe of pipe section.

Technical teaching for solving the problem was

Suction pipe of the invention is using extraneous gas as engine air-breathing from head towards vehicle-width direction outer openings Air suction inlet sucking, aforementioned head climb to vehicle driver's cabin upper surface, which is characterized in that avoiding pipe section just Top aforementioned air suction inlet is open, aforementioned tubular duct portion from the rear lower surface on aforementioned head along aforementioned driver's cabin after Surface extends downward, in the rear square end of the air suction inlet towards forming step on the inside of vehicle-width direction, also, is formed and is drawn Portion is led, aforementioned guide portion makes continuous between the step by the concave curved surface for being in plan view in arc-shaped.

Moreover, in this way, being open since air suction inlet avoids the surface of pipe section, extraneous gas becomes From the front side on head around enter and towards the flowing of pipe section, this around during entering, rain, snow due to collision with wall or landing It is detached from from the flowing of extraneous gas to bottom surface, so that rain, snow be prevented to enter pipe section, and is also prevented from rain, avenges from air Suction inlet is directly entered pipe section.

Also, the flowing for passing through the extraneous gas of the rear square end of air suction inlet is guided along guide portion thus towards vehicle Front, therefore flow velocity is easy the flowing of the extraneous gas of the rear side of the air suction inlet improved with temporarily far from pipe section Mode go the long way round, in by the time for going the long way round acquirement, rain, snow landing amount it is compared with the past become larger, these rain, snow are opposite It is difficult to be inhaled into air suction inlet.

In addition, configuring rake or setting discharge outlet by the bottom surface on head, and make to be prevented from entering to pipe section And remain in the rain in head, the thawing water of snow can be discharged to outside aforementioned head.

In addition, in the present invention, it is preferred that have perpendicular wall at the position adjacent with guide portion in head, it is aforementioned Perpendicular wall stops the water for accumulating in the bottom surface on aforementioned head, in this way, then can reliably stop, so that accumulating in head Rain, snow thawing water will not enter pipe section side, also, extraneous gas by aforementioned guide portion guide and during going the long way round, only Rain, snow is wanted to land lower than the height of perpendicular wall, it will be able to rain, snow be prevented to enter pipe section.

Further it is preferred that by head, using the rear square end of air suction inlet as boundary, along front and back, segmentation is constituted, in the segmentation The downside of opening end face in the rear portion on head afterwards forms perpendicular wall, in this way, then can be at the rear including head When the blow molding of partial pipe section, simply integrally formed perpendicular wall, even if using perpendicular wall as seperated part subsequent In the case where being installed in processing, as long as the stage before the forward portion on assembling head, it will be able to simply carry out perpendicular wall Installation.

It, can be by that will be used to making extraneous gas swimmingly around entering in addition, if the structure for dividing head front and back Demarcation plate is coated using molten resin as inserts and solidifies molten resin, and is simply shaped aforementioned demarcation plate one The forward portion on the head of body, compared with the case where assembling the demarcation plate of seperated part in following process, additionally it is possible to have Effect ground significantly ensures flow path cross sectional area.

In addition, this hundred in the present invention, it is preferred that shutter is assembled in the side on the outside of the vehicle-width direction on head Leaf window be more than air suction inlet opening range cover to the surface of pipe section, in this way, which pipe section can be avoided Mouth opening is drawn air into surface, while the good appearance of aesthetics can be kept in design.

Moreover, in the present invention, it is preferred that forming draining around the aforementioned air suction inlet in the upper surface on head Access, the drainage channel catch the rainwater flowed down from the upper surface on aforementioned head, make the rainwater to the side of aforementioned air suction inlet Under by-pass flow, in this way, due to the upper surface for dropping to head and the rainwater that flows down is caught by drainage channel and is sucked to air Under the side by-pass flow of mouth, therefore it can prevent from forming water droplet in the rising wood of the air suction inlet and be inhaled into showing in suction pipe As.

Additionally, it is preferred that form drainage channel by the flute profile of the recessed upper surface in head, in this way, then can be Drainage channel is simply formed by mold when the blow molding of suction pipe, and in appearance, as no protrusion Be not easy obvious drainage channel, additionally it is possible to prevent the deterioration of aesthetics.

Invention effect

According to above-mentioned suction pipe of the invention, various excellent effects as described below can be obtained.

(I) can make extraneous gas become from the front side on head around enter and towards the flowing of pipe section, this around entering the phase Between, make rain, snow from the flowing of extraneous gas be detached to prevent rain, snow enter pipe section, and can also prevent rain, snow from Air suction inlet is directly entered pipe section, also, makes the extraneous gas of the rear square end across air suction inlet by guide portion Flow direction vehicle front makes flow velocity be easy the flowing of the extraneous gas of the rear side of the air suction inlet improved with temporarily separate The mode of pipe section is gone the long way round, compared with the past, and the landing amount increase of rain, snow can make these rain, snow be difficult to be inhaled into air suction Entrance, therefore be reliably prevented from rain, avenge into pipe section.

(II) if having perpendicular wall at the position adjacent with guide portion being configured in head, which is accumulated in The water of the bottom surface on aforementioned head then can reliably stop by perpendicular wall, so that accumulating in the thawing water of the rain in head, snow Pipe section side will not be entered, also, during extraneous gas directed section guides and goes the long way round, as long as rain, snow land than perpendicular wall Height it is low, it will be able to reliably prevent rain, snow enter pipe section.

(III) if being configured to make head with the rear square end boundary of air suction inlet, along front and back, segmentation is constituted, in the segmentation The downside of opening end face in the rear portion on head afterwards forms perpendicular wall, then can include the pipeline of the rear portion on head Simply integrally formed perpendicular wall when the blow molding in portion, in addition, even if using perpendicular wall as seperated part in following process In the case where installation, perpendicular wall also can be simply installed before the forward portion on assembling head.

(IV) if the side assembly shutter being configured on the outside of the vehicle-width direction on head, which is more than air It covers to the opening range of suction inlet to the surface of pipe section, then draws air into mouth with capable of avoiding the surface of pipe section Opening, while the good appearance of aesthetics can be kept in design.

(V) if being configured to form drainage channel around the aforementioned air suction inlet in the upper surface on head, the draining Access catches the rainwater flowed down from the upper surface on aforementioned head, makes the rainwater under the side by-pass flow of aforementioned air suction inlet, then can Enough make the upper surface for dropping to head and the rainwater that flows down is caught from drainage channel and under the side by-pass flow of air suction inlet, therefore The phenomenon that being reliably prevented from the water droplet that rainwater is sucked from the air suction inlet.

It (VI), can be in air-breathing if being configured to form drainage channel by the flute profile of the recessed upper surface in head Drainage channel is simply formed by mold when the blow molding of pipeline, also, in appearance, as no protrusion and not Easily obvious drainage channel, additionally it is possible to prevent the deterioration of aesthetics.

Detailed description of the invention

Fig. 1 is the perspective view for indicating conventional example.

Fig. 2 is by an example for implementing mode of the invention with the perspective view shown in the state decomposed.

Fig. 3 is the cross-sectional view of the guide portion of overlook view Fig. 2.

Fig. 4 is the perspective view for indicating other embodiments of the invention.

Fig. 5 is the main view of the suction pipe of Fig. 4 from vehicle front.

Fig. 6 is the perspective view of the suction pipe of Fig. 4 from vehicle rear ramp.

Specific embodiment

Hereinafter, the embodiments of the present invention will be described with reference to the drawings.

Fig. 2 and Fig. 3 indicates to implement an example of mode of the invention, the part table of label appended drawing reference identical with Fig. 1 Show same object.

As shown in Fig. 2, the feelings of suction pipe 6 and the previous suction pipe 3 being previously illustrated in Figure 1 in the present embodiment Condition is roughly the same, has the rear surface for being installed on driver's cabin 1 and the pipe main body 4 and covering aforementioned air for becoming shell mechanism are inhaled Shutter 5 of the entrance 2 to prevent rainwater from falling directly into and (equally also snow is prevented to enter), aforementioned tubular duct main body 4 are configured to have It climbs to upper surface and by aforementioned air suction inlet 2 from the back-surface side of driver's cabin 1 towards on the outside of vehicle-width direction (in Fig. 1 Left side) opening head 4a and extended downward from the rear lower surface of head 4a and along the rear surface of aforementioned driver's cabin 1 Pipe section 4b, but it is characterized in that, the air suction inlet 2 of aforementioned head 4a is avoided opening right above aforementioned tubular duct portion 4b Mouthful, in the rear square end of aforementioned air suction inlet 2 towards forming step on the inside of vehicle-width direction, also, form guide portion 7(reference Fig. 3), aforementioned guide portion 7 makes continuous between the step by the concave curved surface for being in plan view in arc-shaped.

Also, in the case where this example illustrated, aforementioned head 4a, which is divided, is configured in the 4a of head and pipe section The rear portion 4ar and extend towards the front of rear portion 4ar and climb to the upper table of driver's cabin 1 that the surface of 4b contacts The forward portion 4af in face remains side 8, on the other hand, before aforementioned on the outside of the vehicle-width direction of aforementioned rear portion 4ar It is opened on the outside of the vehicle-width direction of square part 4af and forms air suction inlet 2.

That is, the head 4a in the present embodiment is to divide the knot constituted along front and back using the rear square end of air suction inlet 2 as boundary Structure, the downside of the opening end face 9 of the rear portion 4ar of the head 4a after the segmentation are formed with perpendicular wall 10, and the perpendicular wall 10 is with before It is adjacent and throughout vehicle-width direction to state guide portion 7, wall 10 can be erected by this and stops the bottom surface 11 for accumulating in aforementioned head 4a Water.

Here, perpendicular wall 10 is formed about in the downside of the opening end face 9 of rear portion 4ar, at the rear including head 4a Integrally formed perpendicular wall 10 when the blow molding of the pipe section 4b of part 4ar, but can also be in the front part of assembling head 4a Divide before 4af, installs perpendicular wall 10 as seperated part in following process.

In addition, being equipped with water flow go back to 2 side of air suction inlet for making to accumulate in the bottom surface 11 in the bottom surface 11 of aforementioned head 4a Rake recycles aforementioned water by the dropping liquid channel 12 for being set to 2 lower end of air suction inlet and guides to perpendicular 10 side of wall, thus It can be discharged from discharge outlet 13 to outside the 4a of head.

In addition, about the discharge outlet 13 formed for water to be discharged, in advance in the forward portion 4af of head 4a and rear The lower side position of part 4ar chimeric part forms recessed portion, borrows when keeping forward portion 4af chimeric with rear portion 4ar It helps aforementioned recessed portion to form gap between forward portion 4af and aforementioned perpendicular wall 10, which is used as discharge outlet 13.

Moreover, in the present embodiment, due to existing from air suction inlet 2 towards the extraneous gas that vehicle-width direction inside sucks Become towards rear of vehicle around the flowing entered in the 4a of head, therefore in order to swimmingly guide this around entering, in aforementioned head 4a It is inside built-in with demarcation plate 14, and about the built-in demarcation plate 14, which can be utilized molten resin as inserts It coats and solidifies molten resin, thus formed as by the forward portion 4af of the head 4a of aforementioned 14 integration of demarcation plate Shape.In addition, the side on the outside of the vehicle-width direction of head 4a is equipped with shutter 5, which is more than air suction inlet 2 Opening range and cover to the surface of pipe section 4b.

Moreover, if suction pipe 6 is constituted in this wise, since air suction inlet 2 is avoided opening right above pipe section 4b Mouthful, thus extraneous gas become from the front side of head 4a around enter and towards the flowing of pipe section 4b, this around during entering, rain, Snow due to collision with wall or drop to bottom surface 11 and be detached from from the flowing of extraneous gas, so that rain, snow be prevented to enter pipe Road portion 4b, and be also prevented from rain, snow and be directly entered pipe section 4b from air suction inlet 2.

Also, the flowing for passing through the extraneous gas of the rear square end of air suction inlet 2 is guided along guide portion 7 to direction Vehicle front (right side in Fig. 3), thus flow velocity be easy improve air suction inlet 2 rear side extraneous gas flowing with Temporarily the mode far from pipe section 4b is gone the long way round, and within by the time for going the long way round acquirement, rain, the landing amount of snow and previous ratio become Greatly, these rain, snow are difficult to be inhaled into relative to air suction inlet 2.

In addition, being prevented from entering pipe section 4b and remaining in the thawing water of the rain in the 4a of head, snow by erecting wall 10 reliably Stop to prevent the thawing water of the rain, snow from entering the side pipe section 4b, the rain, snow thawing water by being set to aforementioned head 4a's The rake of bottom surface 11 is flowed down to dropping liquid channel 12 and is recovered, and is guided from the dropping liquid channel 12 to perpendicular 10 side of wall thus from draining It is discharged outside 13 headward 4a of mouth.

Therefore, according to above-described embodiment, make extraneous gas become from the front side of head 4a around enter and towards pipe section 4b Flowing, rain, snow can be made to be detached from from the flowing of extraneous gas during enter at this, rain, snow is prevented to enter pipe section 4b, and And rain, snow can also be prevented to be directly entered pipe section 4b from air suction inlet 2, also, from capable of making by guide portion 7 across air The flow direction vehicle front of the extraneous gas of the rear square end of suction inlet 2 makes flow velocity be easy the rear of the air suction inlet 2 improved The flowing of the extraneous gas of side is gone the long way round in a manner of temporary separate pipe section 4b, is increased the landing amount of rain, snow than previous, is made this A little rain, snow are difficult to be inhaled into air suction inlet 2, therefore are reliably prevented from rain, avenge into pipe section 4b.

In addition, can reliably stop the rain accumulated in the 4a of head, the thawing water of snow by perpendicular wall 10, to prevent, it is somebody's turn to do Rain, snow thawing water enter the side pipe section 4b, also, during extraneous gas directed section 7 guides and goes the long way round, as long as make rain, Snow lands lower than the height of perpendicular wall 10, it will be able to rain, snow reliably be prevented to enter pipe section 4b.

Moreover, especially in the present embodiment, head 4a is divided using the rear square end of air suction inlet 2 as boundary along front and back It constitutes, is formed with perpendicular wall 10 on the downside of the opening end face in the rear portion 4ar of the head 4a after the segmentation, therefore can be Simply integrally formed perpendicular wall 10 when the blow molding of the pipe section 4b of the rear portion 4ar including head 4a, even if that will erect In the case that wall 10 is installed in following process as seperated part, as long as before the forward portion 4af of assembling head 4a Stage, it will be able to simply carry out the installation of perpendicular wall 10.

Also, it is constituted if head 4a is divided along front and back, can will be used to make extraneous gas swimmingly around the separation entered Plate 14 is coated using molten resin as inserts and solidifies molten resin, so as to simply shape aforementioned demarcation plate The case where forward portion 4af of 14 integrated head 4a, demarcation plate 14 of the part seperated with being assembled in following process phase Than effectively can significantly ensure flow path cross sectional area.

In addition, the lateral position on the outside of the vehicle-width direction of head 4a, is more than opening for air suction inlet 2 using shutter 5 Cover to the surface of pipe section 4b to mouthful range, thus can avoid pipe section 4b surface draw air into mouth 2 and open Mouthful, while the good appearance of aesthetics can be kept in design.

Fig. 4 to fig. 6 indicates other embodiments of the invention, with above-mentioned Fig. 2 and Fig. 3 the case where in the same manner as constitute In suction pipe 6, drainage channel 15, the drainage channel are formed around the aforementioned air suction inlet 2 in the upper surface of head 4a 15 catch in the upper surface of aforementioned head 4a in arrow A(referring to Fig. 5 and Fig. 6) shown in as to flowing down on the outside of vehicle-width direction Rainwater, make rainwater under the side by-pass flow of aforementioned air suction inlet 2.

The drainage channel 15 is formed by the flute profile of the recessed upper surface in head 4a, more specifically, aforementioned End on the outside of the vehicle-width direction of the upper surface of head 4a forms flute profile as drainage channel 15, and the flute profile is along air The mode of the rising wood of suction inlet 2 extends to vehicle front-rear direction, and logical generally, due to the pipe main body 4 of this suction pipe 6 It crosses blow molding and makes, as long as therefore in the blow molding by mold aforementioned drainage channel 15 formed integrally.

In addition, the upper surface of so-called head 4a refers to observe in overlook view head 4a in the present invention The range arrived, especially in the present embodiment, aforementioned drainage channel 15 also extend to the front and back of the upper surface positioned at head 4a The sloping portion of position, aforementioned drainage channel 15 are respectively facing obliquely downward by the two sides of aforementioned air suction inlet 2 and extend and arrive Up near the lower end position of the air suction inlet 2.

Moreover, if constituting suction pipe 6 like this, even if being equipped in the upper surface of head 4a towards vehicle-width direction Outside forms the rake of downward gradient, the rainwater for dropping to the upper surface of aforementioned head 4a and flowing down to vehicle-width direction outside It is caught by drainage channel 15 under the side by-pass flow of air suction inlet 2, therefore the rising wood in the air suction inlet 2 can be prevented The phenomenon for forming water droplet and being inhaled into suction pipe 6.

As a result, due to that can be arranged without barrier in the upper surface of head 4a towards under formation on the outside of vehicle-width direction The rake of gradient drops, thus can make to climb to the upper surface of driver's cabin 1 suction pipe 6 head 4a with inconspicuous side Formula is blended in the appearance configuration of aforementioned driver's cabin 1, and the appearance that can prevent the presence because of head 4a from damaging aforementioned driver's cabin 1 is set The beauty of meter.

Therefore, according to above-described embodiment, the upper surface of head 4a is dropped to simultaneously due to that can catch by drainage channel 15 To the rainwater flowed down on the outside of vehicle-width direction, make rainwater under the side by-pass flow of air suction inlet 2, thus be reliably prevented from from The air suction inlet 2 sucks the phenomenon that water droplet of rainwater, moreover, can be arranged without barrier in the upper surface of head 4a towards vehicle The rake of downward gradient is formed on the outside of width direction, so as to keep the good driver's cabin 1 of aesthetics as the past Appearance.

In addition, in the present embodiment, due to forming drainage channel 15 by the flute profile of the recessed upper surface in head 4a, because This can form simplerly drainage channel 15 by mold in the blow molding of suction pipe 6, also, in appearance, Obvious drainage channel 15 is not easy as not protrusion, additionally it is possible to prevent the deterioration of aesthetics.

In addition, suction pipe of the invention is not only limited to the above embodiments, the present invention can not departed from certainly Purport in the range of additional various changes.

Description of symbols

1 driver's cabin；2 air suction inlets；The head 4a；4ar rear portion；4b pipe section；5 shutters；6 suction pipes； 7 guide portions；9 open end faces；10 perpendicular walls；11 bottom surfaces；15 drainage channels.

Claims

1. a kind of suction pipe, aforementioned suction pipe is using extraneous gas as engine air-breathing from head towards vehicle-width side The air suction inlet sucking of outside side opening, the head climb to vehicle driver's cabin upper surface, aforementioned suction pipe It is characterized in that,

Aforementioned air suction inlet is open with avoiding the surface of pipe section, rear lower surface of the aforementioned tubular duct portion from aforementioned head Extend downward along the rear surface of aforementioned driver's cabin,

In the rear square end of the air suction inlet towards forming step on the inside of vehicle-width direction, also, form guide portion, aforementioned guidance Portion makes continuous between the step by the concave curved surface for being in plan view in arc-shaped.

2. suction pipe as described in claim 1, which is characterized in that

Has perpendicular wall at the position adjacent with guide portion in head, aforementioned perpendicular wall stops the bottom surface for accumulating in aforementioned head Water.

3. suction pipe as claimed in claim 2, which is characterized in that

By head, using the rear square end of air suction inlet as boundary, along front and back, segmentation is constituted, the rear portion on the head after the segmentation In the downside of opening end face form perpendicular wall.

4. suction pipe as described in claim 1, which is characterized in that

Shutter is assembled in side on the outside of the vehicle-width direction on head, and aforementioned shutter is more than the opening range of air suction inlet And it covers to the surface of pipe section.

5. suction pipe as described in claim 1, which is characterized in that

Drainage channel is formed around the aforementioned air suction inlet in the upper surface on head, aforementioned drainage channel is caught from aforementioned head The rainwater that the upper surface in portion flows down makes the rainwater under the side by-pass flow of aforementioned air suction inlet.

6. suction pipe as claimed in claim 5, which is characterized in that

Drainage channel is formed by the flute profile of the recessed upper surface in head.