Abstract:
A vehicle is capable of simplifying attaching a connection member and an atmospheric discharge member to a reservoir tank of a vehicle body. The vehicle is arranged such that it includes a connection member for connecting a heat exchanger for cooling an engine and a reservoir tank for storing liquid therein. An atmospheric discharge member attached to the reservoir tank and having an atmospheric discharge opening is located in the vicinity of the connection member.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     This invention relates to vehicles and particularly to a vehicle provided with a heat exchanger for cooling an engine and a reservoir tank for storing liquid therein.  
         [0003]     2. Description of the Related Art  
         [0004]     In a conventional motorcycle, there are provided a radiator for cooling an engine and a reservoir tank for keeping the amount of cooling water in the radiator constant. The reservoir tank is connected with an inlet hose to be connected to the radiator and a breather hose for atmospheric discharge, respectively. See JP-A-Hei 10-212953.  
         [0005]     However, since the connecting region of the inlet hose to the reservoir tank and that of the breather hose to the reservoir tank are separate and spaced away from each other, it is difficult to fix these two hoses to the vehicle body with a single fixing member. Therefore, the two hoses are fixed to the vehicle body with independent, separate fixing members which raises a problem of troublesome work of fixing the hoses to the vehicle body as well as an increased number of parts.  
       SUMMARY OF THE INVENTION  
       [0006]     In order to overcome the problems described above, preferred embodiments of the present invention provide a vehicle capable of simplifying the fixing of a connection member and an atmospheric discharge member to a reservoir tank of a vehicle body.  
         [0007]     A vehicle according to a first preferred embodiment of the present invention includes a connection member for connecting a heat exchanger for cooling an engine and a reservoir tank for storing liquid therein, and an atmospheric discharge member attached to the reservoir tank and having an opening for atmospheric discharge located in the vicinity of the connection member.  
         [0008]     A vehicle according to a second preferred embodiment of the present invention includes a reservoir tank for storing liquid therein, an atmospheric discharge member attached to the reservoir tank and provided with an opening for atmospheric discharge, and a mounting member integral with or separate from the reservoir tank for the attachment of the reservoir tank to a vehicle body and for the positioning of the atmospheric discharge member.  
         [0009]     In the vehicle according to the first preferred embodiment of the present invention, since an opening of an atmospheric discharge member is located in the vicinity of a connection member, the atmospheric discharge member and the connection member can be fixed to the vehicle body with one (single) fixing member. As a result, fixing of the atmospheric discharge member and the connection member to the vehicle body can be simplified.  
         [0010]     In the vehicle according to the second preferred embodiment of the present invention, since a mounting member is adapted to attach the reservoir tank to the vehicle body and to position the atmospheric discharge member, the atmospheric discharge member can be positioned using the mounting member. Thus, the positioning of the atmospheric discharge member can be facilitated. In addition, a special positioning member for positioning the atmospheric discharge member is dispensed with, thereby reducing the number of parts. If the mounting member is integral with the reservoir tank, the number of parts can be further reduced thereby improving assembly properties of the vehicle body.  
         [0011]     Other features, elements, characteristics, and advantages will be apparent from the following detailed description of preferred embodiments with reference to the attached drawings.  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0012]      FIG. 1  is a side view showing the overall structure of a motorcycle according to a preferred embodiment of the present invention.  
         [0013]      FIG. 2  is a front view of the motorcycle according to the preferred embodiment shown in  FIG. 1 .  
         [0014]      FIG. 3  is a side view of a portion around an engine of the motorcycle according to the preferred embodiment shown in  FIG. 1 .  
         [0015]      FIG. 4  is a front view of a portion around a radiator of the motorcycle according to the preferred embodiment shown in  FIG. 1 .  
         [0016]      FIG. 5  is a left side view of a reservoir tank used in the motorcycle according to the preferred embodiment shown in  FIG. 1 .  
         [0017]      FIG. 6  is a right side view of the reservoir tank used in the motorcycle according to the preferred embodiment shown in  FIG. 1 .  
         [0018]      FIG. 7 (A) is a plan view of a first bracket for the attachment of the reservoir tank to the vehicle body of the motorcycle according to the preferred embodiment shown in  FIG. 1 , and  FIG. 7 (B) is a side view of the first bracket.  
         [0019]      FIG. 8 (A) is a plan view of a second bracket for the attachment of the reservoir tank to the vehicle body of the motorcycle according to the preferred embodiment shown in  FIG. 1 , and  FIG. 8 (B) is a side view of the second bracket.  
         [0020]      FIG. 9  is a side view showing a variation of the portion around the engine of the motorcycle according to the preferred embodiment shown in  FIG. 3 .  
         [0021]      FIG. 10  is a front view showing a variation of the portion around the radiator of the motorcycle according to the preferred embodiment shown in  FIG. 4 .  
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0022]     Now, description will be made of a vehicle according to a preferred embodiment of the present invention with reference to the drawings.  
         [0023]     In this preferred embodiment, an example will be described in which the present invention is applied to an under-bone type motorcycle. It is to be understood that the present invention is not limited to an under-bone type motorcycle, but may be applied to vehicles in general.  
         [0024]     As shown in  FIG. 1  and  FIG. 2 , in an under-bone type motorcycle  1 , the forward end of a main frame  3  is connected to a head pipe  2 . The main frame  3  extends downwardly toward the rear. A rear arm bracket  4  is connected to the rear end of the main frame  3 . Also, to the main frame  3  is connected a seat rail  5  extending upwardly toward the rear. A back stay  6  is connected between the rear end of the main frame  3  and the rear portion of the seat rail  5 . The head pipe  2 , main frame  3 , rear arm bracket  4 , seat rail  5 , and back stay  6  make up a body frame.  
         [0025]     Below the head pipe  2  is disposed a pair of front forks  7 . A front wheel  8  is mounted for rotation to the lower ends of the pair of front forks  7 . A front fender  9  for covering the front wheel  8  thereabove is disposed above the front wheel  8 . Also, a handlebar  10  is attached above the head pipe  2  for rotation. A rear view mirror  11  is mounted inside the handlebar  10 . A head light  12  is disposed in front of and inside the handlebar  10 .  
         [0026]     An engine  13  is provided below the main frame  3 , including a cylinder  13   b  with a cylinder axis  13   a  inclined obliquely upwardly toward the front at a given angle. The engine  13  has a mounting section  13   c  provided on the cylinder  13   b  and a mounting section  13   d  provided further downward from the cylinder  13   b  of the engine  13 .  
         [0027]     A radiator  14  is provided for cooling the engine  13 , the radiator  14  being arranged in front of and above the engine  13  and below the main frame  3 . The lower end of the radiator  14  is located above the lower surface  13   e  of the cylinder  13   b  of the engine  13 . The radiator  14  is one example of the “heat exchanger” of the present invention. As shown in  FIG. 2 , the radiator  14  includes a pair of tank sections  14   a ,  14   b  spaced at a given distance in the lateral direction of the motorcycle  1  (in the direction of arrow A of  FIG. 2 ) and a core section  14   c  disposed between the pair of tank sections  14   a ,  14   b . The core section  14   c  includes numerous holes for the passage of a running wind  50  (see  FIG. 1 ). A cap section  14   d  is attached to one tank section  14   b  with a non-illustrated pressure regulating valve. The radiator  14  is connected to the engine  13  by a feed pipe  15  and a return pipe  16 .  
         [0028]     When cooling the engine  13  by the radiator  14 , cooling water warmed up by cooling the engine  13  is first sent to the tank section  14   a  of the radiator  14  through the feed pipe  15 . The warmed cooling water is cooled by the core section  14   c  of the radiator  14  and thereafter sent to the tank section  14   b  of the radiator  14 . The cooling water, which has been cooled down in the core section  14   c , is returned to the engine  13  through the return pipe  16 . In the core section  14   c  of the radiator  14 , a running wind (air)  50  is adapted to hit against the core section  14   c  from the front, pass therethrough, and cool (via radiation) the cooling water.  
         [0029]     A reservoir tank  17  is disposed below the lower surface  13   e  of the cylinder  13   b  of the engine  13  and on the right side of the body center line when viewed from the front of the vehicle body. The reservoir tank  17  stores as much cooling water as the increased volume of the cooling water due to the elevated water temperature in the radiator  14 . Also, the radiator  14  draws by negative pressure as much cooling water as the decreased volume of the cooling water from the reservoir tank  17  due to the lowered temperature in the radiator  14 , for the filling of the radiator  14 . As such, the reservoir tank  17  has the function of keeping the amount of cooling water in the radiator  14  constant. Also, the reservoir tank  17  is preferably made from a semitransparent material allowing visual recognition from the outside of the amount of cooling water stored therein.  
         [0030]     The reservoir tank  17  is connected to the radiator  14  by a feed and drainage pipe  20 . Specifically, one end of the feed and drainage pipe  20  is connected to a first connection section  17   f  (see  FIG. 5  and  FIG. 6 ) located at the lower end of the reservoir tank  17  disposed on the right side of the body center line when viewed from the front of the vehicle body. The other end of the feed and drainage pipe  20  is connected to the cap section  14   d  of the radiator  14  disposed on the left side of the body center line when viewed from the front of the vehicle body.  
         [0031]     As shown in  FIG. 5  and  FIG. 6 , the reservoir tank  17  includes, at the upper end, a cylindrical cooling water filler port  17   a . A cap  17   b  for closing or opening the cooling water filler port  17   a  is attached to the cooling water filler port  17   a . The cooling water filler port  17   a  is provided, at its side, with a second connection section  17   c . To the second connection section  17   c  is fastened one end of an atmospheric discharge hose  19 . The other end of the atmospheric discharge hose  19  is an opening  19   a  for atmospheric discharge.  
         [0032]     A first mounting section  17   d  is arranged at the upper end of the reservoir tank  17  and at the forward section of the cooling water filler port  17   a . A second mounting section  17   e  is arranged at the rear end of the reservoir tank  17 . Further, at the lower end of the reservoir tank  17 , and behind the first connection section  17   f , is arranged a projection  17   g.    
         [0033]     A first bracket  30  is mounted to the first mounting section  17   d  arranged on the reservoir tank  17  (see FIGS.  7 (A),  7 (B)). With the first bracket  30  mounted to the first mounting section  17   d  and further mounted to the motorcycle  1 , the first bracket  30  is arranged such that it is located above the reservoir tank  17 . As shown in FIGS.  7 (A) and  7 (B), the first bracket  30  is provided with a tank side plate-like section  30   a  connected to the first mounting section  17   d  of the reservoir tank  17  with a bolt or other suitable fastening member. One end of a body section  30   b  is connected to the tank side plate-like section  30   a  so as to extend vertically when assembled to the reservoir tank  17 . The body section  30   b  includes a first guide section  30   d  for positioning (fixing) the feed and drainage pipe  20 . The body section  30   b  includes a second guide section  30   e  located further upward than the first guide section  30   d  when assembled to the vehicle body for positioning (fixing) the feed and drainage pipe  20 . Further, the body section  30   b  is provided with a third guide section  30   f  located further upward than the second guide section  30   e  when assembled to the vehicle body for positioning (fixing) the feed and drainage pipe  20 . As shown in  FIG. 7 (B), the second guide section  30   e  is made up of a hollow, perpendicular guide section  30   e   1  extending approximately in the direction perpendicular to the body section  30   b , and a hollow, parallel guide section  30   e   2  extending approximately in the direction parallel to the body section  30   b . The third guide section  30   f  is made up of a hollow, guide section body  30   f   1  extending approximately in the direction perpendicular to the body section  30   b , and a hollow, slanting end section  30   f   2  inclined to the guide section body  30   f   1 .  
         [0034]     Of the plurality of guide sections  30   d ,  30   e , and  30   f , the second guide section  30   e  and the third guide section  30   f  are adapted to position the atmospheric discharge hose  19  as well as the feed and drainage pipe  20 . A frame side plate-like section  30   c  is provided at the other end of the body section  30   b . The frame side plate-like section  30   c  is connected to the mounting section  13   c  of the engine  13  with bolts or the like through a bracket  34  (see  FIG. 4 ) together with a mounting piece  33  (see  FIG. 4 ) arranged at the lower end of the radiator  14 .  
         [0035]     A second bracket  31  (see FIGS.  8 (A),  8 (B)) is mounted to the second mounting section  17   e  arranged on the reservoir tank  17 . As shown in  FIG. 8 , the second bracket  31  is provided with an insertion support piece  31   a  having an insert hole  31   c  for the projection  17   g  of the reservoir tank  17  to be inserted therein. The insertion support piece  31   a  is integral with a connection support piece  31   b  extending approximately in the direction perpendicular to the insertion support piece  31   a  and connected to the second mounting section  17   e  of the reservoir tank  17  with a bolt or the like. The connection support piece  31   b  includes a mounting hole  31   d  for a bolt or other suitable fastening member to be inserted therein during assembly to the mounting section  13   d  of the engine  13 .  
         [0036]     As shown in  FIG. 3  and  FIG. 4 , the feed and drainage pipe  20  is connected to the first connection section  17   f  of the reservoir tank  17 , and the feed and drainage pipe  20  passes in front of the reservoir tank  17  to be inserted into the first guide section  30   d , second guide section  30   e  and third guide section  30   f  of the first bracket  30 . As a result of the feed and drainage pipe  20  being inserted in the first guide section  30   d , second guide section  30   e  and third guide section  30   f , the feed and drainage pipe  20  is positioned. Also, the feed and drainage pipe  20 , after being inserted in the third guide section  30   f , passes under the radiator  14 , goes to the left with respect to the body center line when viewed from the front of the vehicle body, and is connected to the cap section  14   d  of the radiator  14 . In this manner, the feed and drainage pipe  20  is made up of a first vertical section  20   a  located in the vicinity of the reservoir tank  17  which is inserted into the guide sections  30   d ,  30   e , and  30   f  and extending approximately vertically, a horizontal section  20   b  extending below the radiator  14  approximately horizontally, and a second vertical section  20   c  extending approximately vertically on the left side of the radiator  14  when viewed from the front of the vehicle body.  
         [0037]     The atmospheric discharge hose  19  is connected to the second connection section  17   c  of the reservoir tank  17  and, after being inserted in the parallel guide section  30   e   2  of the second guide section  30   e , is inserted into the perpendicular guide section  30   e   1 . The atmospheric discharge hose  19 , after being inserted in the perpendicular guide section  30   e   1  of the second guide section  30   e , is inserted into the guide section body  30   f   1  of the third guide section  30   f  and further into the slanting end section  30   f   2 . In this manner, the atmospheric discharge hose  19  is positioned by the guide sections  30   e ,  30   f . In particular, the opening  19   a  of the atmospheric discharge hose  19  is positioned by the slanting end section  30   f   2  in the state of opening rearward and downward of the vehicle body.  
         [0038]     The opening  19   a  of the atmospheric discharge hose  19  and the feed and drainage pipe  20  are positioned (fixed) by common fixing members such as the second guide section  30   e  and the third guide section  30   f . Therefore, the opening  19   a  of the atmospheric discharge hose  19 , and its halfway region  19   b  extending to the opening  19   a , are located in the vicinity of the feed and drainage pipe  20 . In other words, the lower portion of the first vertical section  20   a  of the feed and drainage pipe  20  is at a position in the vicinity of the reservoir tank  17 , and the opening  19   a  of the atmospheric discharge hose  19  is located in the vicinity of the upper portion of the first vertical section  20   a . Also, the opening  19   a  of the atmospheric discharge hose  19  is located in the vicinity of an upper portion of the first bracket  30 .  
         [0039]     In the present preferred embodiment as described above, since the reservoir tank  17  is located further downward than the radiator  14 , the atmospheric discharge hose  19  is arranged such that its opening  19   a  is located above the reservoir tank  17  and below the radiator  14 .  
         [0040]     As shown in  FIG. 1 , the motorcycle  1  is provided with an exhaust pipe  21  having one end connected to the cylinder  13   b  of the engine  13 , the exhaust pipe  21  being bent toward the left when viewed from the front of the vehicle body and extending rearwardly. The exhaust pipe  21  is disposed on the right side with respect to the body center line, when viewed from the front of the vehicle body, which is the opposite side from the reservoir tank  17 . A muffler  22  is connected to the other end of the exhaust pipe  21 .  
         [0041]     The rear arm bracket  4  connected to the main frame  3  is provided with a pivot shaft  23 . The rear arm  24  is pivoted at its forward end by the pivot shaft  23  for up and down swinging movement. A rear wheel  25  is mounted to the rear end of the rear arm  24  for rotation. A seat  26  is disposed above the seat rail  5 . Also, a body cover  27  is attached to the vehicle body from the forward portion to the rear portion thereof so as to cover the head pipe  2  and the seat rail  5 . A rear fender  28  covering the rear wheel  25  thereabove is mounted behind the body cover  27  in the running direction (in the direction of arrow FWD in  FIG. 1 ).  
         [0042]     A pair of leg shields  29 , for covering the front of the driver&#39;s legs, is provided forward of the body cover  27  and spaced at a given distance in the lateral direction of the vehicle body (in the direction of arrow A in  FIG. 2 ). The pair of leg shields  29  is disposed on both sides of the radiator  14  and reservoir tank  17  such that they hold the radiator  14  and reservoir tank  17  therebetween from both sides. That is, the radiator  14  and reservoir tank  17  are disposed inside the leg shields  29  such that they are covered by the leg shields  29  when viewed in the lateral direction.  
         [0043]     As described above, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  is located in the vicinity of the feed and drainage pipe  20 , the atmospheric discharge hose  19  and feed and drainage pipe  20  can be fixed to the vehicle body with a single third guide section  30   f . As a result, fixing of the atmospheric discharge hose  19  and feed and drainage pipe  20  to the vehicle body can be simplified. The expression “to the vehicle body” in the present preferred embodiment includes the engine and the body frame.  
         [0044]     In addition, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19 , or its portion in the vicinity of the opening  19   a , is fixed to the vehicle body with the third guide section  30   f  common to the feed and drainage pipe  20 , both of them can be fixed to the vehicle body with a single third guide section  30   f.    
         [0045]     Further, since in the present preferred embodiment, a halfway region  19   b  of the atmospheric discharge hose  19  is located in the vicinity of the feed and drainage pipe  20 , the halfway region  19   b  of the atmospheric discharge hose  19  can be fixed to the vehicle body with the second guide section  30   e . At the same time, the feed and drainage pipe  20  can be positioned by the second guide section  30   e  such that it is prevented from being located in the vicinity of the cylinder  13   b  of the engine  13 .  
         [0046]     Further, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  is located above the reservoir tank  17 , the atmospheric discharge hose  19  can be disposed at a higher position than the reservoir tank  17 . Therefore, the reservoir tank  17  can be disposed within a dead space below and in front of the engine  13 , and water intrusion into the opening  19   a  of the atmospheric discharge hose  19  can be prevented even when the motorcycle  1  passes through a puddle.  
         [0047]     Further, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  is located below the radiator  14 , positioning of the opening  19   a  of the atmospheric discharge hose  19  becomes easier compared with an arrangement in which the opening  19   a  of the atmospheric discharge hose  19  is located above the radiator  14 . As a result, the length of the atmospheric discharge hose  19  is no longer than necessary, thereby reducing weight and manufacturing costs.  
         [0048]     Further, in the present preferred embodiment, the lower portion of the first vertical section  20   a  of the feed and drainage pipe  20  extending approximately vertically is at a position in the vicinity of the reservoir tank  17 , and the opening  19   a  of the atmospheric discharge hose  19  is located in the vicinity of the upper portion of the first vertical section  20   a  of the feed and drainage pipe  20  extending approximately vertically. Therefore, the length of the atmospheric discharge hose  19  can be decreased to an essential minimum, with the opening  19   a  of the atmospheric discharge hose  19  disposed at a higher position.  
         [0049]     Furthermore, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  opens rearwardly, intrusion of rain water or muddy water splashed up by the front wheel  8  of the motorcycle  1  into the opening  19   a  of the atmospheric discharge hose  19  can be prevented during running of the motorcycle  1 . In particular, as a result of the opening  19   a  of the atmospheric discharge hose  19  opening rearwardly, intrusion of rain water or muddy water can be prevented, with the length of the atmospheric discharge hose  19  reduced to an essential minimum.  
         [0050]     Further, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  opens downwardly, intrusion of rain water into the opening  19   a  of the atmospheric discharge hose  19  can be prevented during running of the motorcycle  1  or at the time the motorcycle  1  is stopped.  
         [0051]     Further, since in the present preferred embodiment, the reservoir tank  17  can be mounted to the vehicle body through the first bracket  30  and second bracket  31 , the so-called unitization is possible and the reservoir tank  17  can be mounted to the vehicle body easily. At this time, since the feed and drainage pipe  20  and the atmospheric discharge hose  19  have been positioned by the guide sections  30   d ,  30   e , and  30   f  of the first bracket  30 , the feed and drainage pipe  20  and the atmospheric discharge hose  19  need not be positioned after the reservoir tank  17  has been mounted to the vehicle body. As described above, since installation of the reservoir tank  17  and positioning of the feed and drainage pipe  20  and the atmospheric discharge hose  19  are completed at the same time, assembly work of the reservoir tank  17  to the vehicle body can be simplified to a large extent.  
         [0052]     Further, a special positioning member for positioning the atmospheric discharge hose  19  is dispensed with, thereby reducing the number of parts. Although each of the first bracket  30  and second bracket  31  may be arranged separate from the reservoir tank  17 , the number of parts can be reduced further improving assembling properties to the vehicle body if the first bracket  30  and second bracket  31  are integral with the reservoir tank  17 .  
         [0053]     Further, since in the present preferred embodiment, the mounting member for the installation of the reservoir tank  17  to the vehicle body is made up of a plurality of constituent members such as the first bracket  30  and second bracket  31 , shapes of the first bracket  30  and second bracket  31  can be simplified even when the shape as a mounting member becomes complicated. As a result, the structure of forming dies used for manufacturing the first bracket  30  and second bracket  31  can be simplified, facilitating installation of the first bracket  30  and second bracket  31  and thus the mounting members for the installation of the reservoir tank  17  to the vehicle body.  
         [0054]     Further, since in the present preferred embodiment, the first bracket  30  and second bracket  31  are attached together through the reservoir tank  17 , the first bracket  30  and second bracket  31  can be made smaller compared with when the first bracket  30  and second bracket  31  are attached directly.  
         [0055]     Further, since in the present preferred embodiment, the first bracket  30  is located above the reservoir tank  17 , the reservoir tank  17  can be disposed in a lower region within a dead space. Also, if the reservoir tank  17  is disposed in a lower region, the atmospheric discharge hose  19  can be located at a position higher than the reservoir tank  17 . As a result, intrusion of muddy water into the opening  19   a  of the atmospheric discharge hose  19  can be prevented even if the motorcycle  1  runs through a puddle or the like.  
         [0056]     Further, since in the present preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  is located in the vicinity of the upper portion of the first bracket  30 , the opening  19   a  of the atmospheric discharge hose  19  is disposed at a relatively high position. As a result, intrusion of muddy water into the opening  19   a  of the atmospheric discharge hose  19  can be prevented even if the motorcycle  1  runs through a puddle or the like.  
         [0057]     Further, the disclosed present preferred embodiment is to be taken as an example in all respects and it is to be understood that this invention is not limited to the present preferred embodiment. The scope of this invention is defined by the appended claims rather than by the description of the foregoing preferred embodiment, including all changes that fall within the metes and bounds of the claims or equivalents of such metes and bounds.  
         [0058]     For example, although in the foregoing preferred embodiment an example is shown of an under-bone type motorcycle  1  having a low main frame, the present invention is not limited to that. The invention may be applied to other vehicles in addition to the motorcycle  1 , such as three wheelers and ATVs (All Terrain Vehicles) if they are of an under-bone type provided with a heat exchanger for cooling the engine  13 .  
         [0059]     Further, although in the foregoing preferred embodiment an example is shown in which the first bracket  30  and second bracket  31  are independent members separate from the reservoir tank  17 , the present invention is not limited to that. For example, the first bracket  30  and second bracket  31  may be integral with the reservoir tank  17 . This allows a significant reduction in the number of parts as well as in assembly man-hours.  
         [0060]     Further, although in the foregoing preferred embodiment an example is shown in which the first bracket  30  is integral with the first guide section  30   d , second guide section  30   e , and third guide section  30   f , the present invention is not limited to that. For example, at least one of the first guide section  30   d , second guide section  30   e , and third guide section  30   f  may be an independent member separately attached to the first bracket  30 .  
         [0061]     Further, although in the foregoing preferred embodiment an example is shown in which the reservoir tank  17  is mounted to the vehicle body with the first bracket  30  and second bracket  31 , the present invention is not limited to that. For example, the reservoir tank  17  may be mounted to the vehicle body with a single bracket (not shown), or with three or more brackets (not shown).  
         [0062]     Although in the foregoing preferred embodiment an example is shown in which the first bracket  30  and second bracket  31  are assembled through the reservoir tank  17 , the present invention is not limited to that. For example, each of the first bracket  30  and second bracket  31  may be made larger and assembled directly to each other, and the reservoir tank  17  is mounted to the vehicle body with these assembled brackets.  
         [0063]     Further, although in the foregoing preferred embodiment an example is shown in which the opening  19   a  of the atmospheric discharge hose  19  is positioned by the slanting end section  30   f   2  of the third guide section  30   f , the present invention is not limited to that. For example, as shown in  FIG. 9  and  FIG. 10 , the atmospheric discharge hose  19  may be elongated so as to extend horizontally together with the horizontal section  20   b  of the feed and drainage pipe  20 , so that the opening  19   a  is located on the left side of the radiator  14  with respect to the body center line when viewed from the front of the vehicle body. In this case, as in the foregoing preferred embodiment, the opening  19   a  of the atmospheric discharge hose  19  is in the state of opening rearward and downward of the vehicle body.  
         [0064]     While the present invention has been described with respect to preferred embodiments, it will be apparent to those skilled in the art that the disclosed invention may be modified in numerous ways and may assume many embodiments other those specifically set out and described above. Accordingly, it is intended by the appended claims to cover all modifications of the present invention which fall within the true spirit and scope of the present invention.