JP6682813B2 - Cooling system mechanism for saddle type vehicles - Google Patents

Description

  The present invention relates to a cooling system mechanism for a saddle-ride type vehicle having a radiator in a saddle-ride type vehicle equipped with a water-cooled engine and a reservoir tank communicating with the radiator.

  In a motorcycle as a saddle-ride type vehicle equipped with a water-cooled engine, heat of cooling water for cooling the engine is dissipated to outside air (particularly running wind) using a radiator. Patent Document 1 discloses a radiator in which a step bracket is used to attach a radiator to the front of an engine on a frame member extending rearward from a head pipe, and the radiator dissipates heat of cooling water into traveling wind. There is.

JP, 2007-118911, A

  A reservoir tank for temporarily storing the cooling water in the radiator is provided in communication with the radiator. This reservoir tank needs to be installed in the vicinity of the radiator. However, as shown in FIG. 5, when it is arranged in the rear space 4 of the radiator 3 arranged in front of the engine 2 in the motorcycle 1, the radiator 3 will be removed. There is a risk that the traveling wind that has passed therethrough will reduce the cooling efficiency of the radiator 3.

  Further, when the reservoir tank is arranged behind the radiator 3, it comes close to the engine 2 located further rearward, and the heat from these is easily received by the reservoir tank, and heat countermeasures such as a heat shield plate are required. May be.

  Further, when the reservoir tank is arranged in the lateral space 5 of the radiator 3, the vehicle width of the motorcycle 1 increases, and if it is attempted to avoid it, the capacity of the reservoir tank may not be sufficiently secured.

  The object of the present invention has been made in consideration of the above circumstances, and it is possible to dispose a reservoir tank of a radiator at a position away from a heat source such as an engine and to eliminate the need for heat countermeasures for the reservoir tank, and to cool the radiator. It is an object of the present invention to provide a cooling system mechanism for a saddle riding type vehicle that can improve efficiency.

A cooling system mechanism for a straddle-type vehicle according to the present invention is a radiator that dissipates heat of a refrigerant for cooling an engine of a saddle-ride type vehicle to the outside air, and communicates with the radiator to temporarily cool the refrigerant in the radiator. In a cooling system mechanism for a saddle-ride type vehicle having a reservoir tank for storing the radiator, the radiator is positioned below a front portion of a frame member extending rearward and downward from a head pipe, and is attached to the frame member. Is disposed between the radiator and the frame member, and the reservoir tank is provided with a recess at the center position in the width direction by forming a pair of protrusions protruding upward at both end positions in the width direction on the upper surface, In the mounted state, when the frame member is fitted into the recess, the projecting portion sandwiches the frame member, Side in which it is characterized in that it is configured to abut against the frame member.

  According to the present invention, since the reservoir tank is arranged between the radiator and the frame member, a space is generated behind or on the side of the radiator. Therefore, the front projection area of the radiator is secured, and the obstacles located behind the radiator are reduced, so that the ventilation of the traveling wind is increased. As a result, the cooling efficiency of the radiator can be improved.

  Further, since the reservoir tank is arranged between the radiator and the frame member, it is arranged near the radiator but at a position away from heat sources such as the engine and the exhaust pipe. Therefore, it is possible to eliminate the need for special heat measures for the reservoir tank.

FIG. 1 is a left side view showing a front half of a motorcycle to which an embodiment of a cooling system mechanism for a saddle-ride type vehicle according to the present invention is applied, with a part of the exterior removed. FIG. 2 is a perspective view showing a mounted state of a radiator and a reservoir tank mounted on the vehicle body frame of FIG. 1. The III arrow line view of FIG. The perspective view which shows the reservoir tank of FIGS. The left side view of the motorcycle which shows the mounting position of the reservoir tank with respect to the radiator arranged in the conventional motorcycle.

Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings.
FIG. 1 is a left side view showing a front half of a motorcycle to which an embodiment of a cooling system mechanism for a saddle-ride type vehicle according to the present invention is applied, with a part of the exterior removed. FIG. 2 is a perspective view showing a mounted state of the radiator and the reservoir tank mounted on the vehicle body frame of FIG. In the present embodiment, the expressions up and down, left and right, and front and back are based on the driver when the vehicle is on board.

  As shown in FIGS. 1 and 2, a motorcycle 10 as a saddle-ride type vehicle has a body frame 11, and a head pipe 12 is provided in front of the body frame 11. The head pipe 12 is provided with a steering mechanism 16 that includes a pair of left and right front forks 14 that rotatably supports the front wheels 13 and a handle bar 15 that incorporates a suspension mechanism (not shown). The front wheels 13 are steered left and right by the operation of.

  On the other hand, the vehicle body frame 11 includes one main frame 17 as a frame member that extends obliquely rearward and downward immediately after the head pipe 12, and a center frame 18 connected to the rear end of the main frame 17 and extending downward. It has a pair of left and right seat rails 19 extending rearward from a rear portion of the main frame 17, and a pair of left and right seat pillars 20 extending obliquely rearward and upward from a rear upper portion of the center frame 18 and connected to the seat rails 19. To be done.

  A seat 21 is arranged above the seat rail 19 and the seat pillar 20. Further, a pivot shaft 22 is installed at a substantially lower center of the center frame 18, and a swing arm (not shown) is pivotally supported around the pivot shaft 22 in a vertically swingable manner. A rear wheel (not shown) is rotatably supported at the rear end of the swing arm.

  An engine 23 is suspended from the main frame 17 and the center frame 18 and disposed in the lower center of the front-rear direction of the vehicle between the front wheels 13 and the rear wheels. The driving force of the engine 23 is transmitted to the rear wheels via a drive chain or the like (not shown).

  To the rear portion of the cylinder head 24 that constitutes the engine 23, for example, a throttle body (not shown), a fuel injector, an air cleaner, etc. that constitute the engine intake system are sequentially connected. A mixture of fuel and air is supplied from the engine intake system to a combustion chamber (not shown) of the engine 23.

  Further, an exhaust pipe 25 and a muffler (not shown) that form an engine exhaust system are sequentially connected to the front portion of the cylinder head 24. The exhaust pipe 25 as an exhaust pipe extends downward from the front part of the cylinder head 24 and then extends rearward, and a muffler is connected to the rear end thereof.

  By the way, the above-described motorcycle 10 has an engine 23 that is a water-cooled engine, and includes a radiator 30 that dissipates the heat of cooling water, which is a refrigerant for cooling the engine 23, to the outside air (running wind). A cooling system mechanism 34 of the motorcycle 10 is configured to include the radiator 30 and a reservoir tank 35 described below.

  The radiator 30 is positioned below the front portion of the main frame 17 extending rearward and downward from the head pipe 12, that is, behind the head pipe 12 and below the main frame 17, and is attached to the main frame 17. In this radiator 30, as shown in FIG. 3, an inlet hose 32 extends upward from a radiator main body 31, and a radiator cap 33 is provided at the upper end of the inlet hose 32. By removing the radiator cap 33, cooling water is injected into the radiator main body 31 through the inlet hose 32.

  As shown in FIGS. 1 and 2, a reservoir tank 35, which communicates with the radiator 30 and temporarily stores the cooling water in the radiator 30 and replenishes the cooling water as needed, is arranged near the radiator 30. That is, as shown in FIG. 3, the reservoir tank 35 is provided with an overflow hose 36, and this overflow hose 36 is connected to the radiator hose 32 in the radiator 30 in the vicinity of the radiator cap 33 and is connected to the radiator body 31 via the inlet hose 32. Communicate.

  When the temperature of the cooling water in the radiator main body 31 rises and the cooling water evaporates and expands, the expanded cooling water is temporarily stored in the reservoir tank 35 via the inlet hose 32 and the overflow hose 36. When the temperature of the cooling water in the radiator main body 31 decreases, the cooling water condenses and the insides of the radiator main body 31 and the inlet hose 32 become negative pressure, so that the cooling water in the reservoir tank 35 causes the overflow hose 36 and the inlet hose 32 to flow. After that, it is returned to the inside of the radiator main body 31 to be replenished.

  As shown in FIGS. 1 and 2, the reservoir tank 35 is arranged above the radiator 30 and below the main frame 17, that is, between the radiator 30 and the main frame 17. Therefore, as shown in FIGS. 3 and 4, the reservoir tank 35 includes projecting portions 37 that project upward at both end positions in the vehicle width direction. Accordingly, the reservoir tank 35 is provided with the recess 38 at the center position in the vehicle width direction. In the mounted state of the reservoir tank 35, the main frame 17 is fitted into the recess 38, so that the projecting portions 37 sandwich the main frame 17. As a result, both projecting portions 37 are provided so as to overlap the main frame 17 in a side view of the reservoir tank 35 in the mounted state.

  Further, in the mounted state of the reservoir tank 35, the inner side surfaces 39 of the pair of protruding portions 37 are configured to be able to contact the main frame 17. Specifically, a cushion pad 40 made of an elastic material is fixed to the inner surface 39 of each of the protrusions 37. When the reservoir tank 35 is attached, the main frame 17 is fitted into the recess 38 of the reservoir tank 35 while pressing the cushion pad 40, so that the inner surface 39 of the protruding portion 37 of the reservoir tank 35 holds the cushion pad 40. It contacts the main frame 17 via the. In this state, the mounting piece 41 formed on the lower rear side of the reservoir tank 35 is fixed to the lower surface of the main frame 17 using bolts or the like.

  In the mounted state of the reservoir tank 35, the inlet hose 32 of the radiator 30 extends upward along the front side of the left or right (left side in the present embodiment) protrusion 37 of the reservoir tank 35, and the inlet hose The radiator cap 33 at the upper end of 32 is also positioned immediately in front of the same protrusion 37.

  Further, the overflow hose 36 and the tank cap 42 of the reservoir tank 35 are provided on the upper surface of one of the protrusions 37, but the inlet hose 32 of the radiator 30 is disposed in front of the left protrusion 37 as described above. Accordingly, the inlet hose 32 is provided on the upper surface of the left protrusion 37, for example. The rear portion of the reservoir tank 35 is fixed to the main frame 17 using the mounting pieces 41 and bolts as described above, and the front portion is held by the inlet hose 32 of the radiator 30 and the overflow hose 36 of the reservoir tank 35.

With the above configuration, the present embodiment has the following effects (1) to (5).
(1) As shown in FIGS. 1 and 2, since the reservoir tank 35 is arranged between the radiator 30 and the main frame 17, a space S is formed behind or on the side of the radiator 30. For this reason, the front projection area of the radiator 30 is secured, and the obstacles located behind the radiator 30 are reduced, so that the ventilation of the traveling wind is increased. As a result, the cooling efficiency of the radiator 30 can be improved.

  (2) Since the reservoir tank 35 is arranged between the radiator 30 and the main frame 17, the reservoir tank 35 is arranged at a position near the radiator 30 and away from heat sources such as the engine 23 and the exhaust pipe 25. Therefore, it is possible to eliminate the need for special heat measures such as a heat guard for the reservoir tank 35.

  (3) As shown in FIGS. 1 and 3, the reservoir tank 35 is provided with a projecting portion 37 projecting upward at least at one end position in the width direction on the upper surface thereof, and has a main frame 17 in a side view in the mounted state. It is configured to overlap. As a result, the dead space above the radiator 30 and below the main frame 17 can be effectively used to ensure a sufficient capacity of the reservoir tank 35 without increasing the vehicle width of the motorcycle 10.

  (4) As shown in FIGS. 3 and 4, the reservoir tank 35 is provided with a recess 38 at the center position in the vehicle width direction by a pair of protrusions 37 protruding from both end positions in the vehicle width direction on the upper surface. In the mounted state, the main frame 17 is fitted into the recess 38 so that the projecting portions 37 sandwich the main frame 17, and the inner side surfaces 39 of the projecting portions 37 are in surface contact with the main frame 17 via the cushion pads 40. Are supported by abutting with.

  As described above, the reservoir tank 35 is supported by the main frame 17 in a surface contact state in the vehicle width direction, so that the rear lower portion of the reservoir tank 35 is fixed to the main frame 17 by the mounting piece 41 and bolts. Therefore, the reservoir tank 37 can be firmly attached to the main frame 17. As a result, it is possible to suppress movement of the reservoir tank 35, particularly in the vehicle width direction, for example, movement due to lateral acceleration when the motorcycle 10 is cornering. Moreover, since the number of fastening points between the reservoir tank 35 and the main frame 17 by bolts or the like can be reduced, the maintainability of the motorcycle 10 can be improved.

  (5) In the reservoir tank 35, the inner side surfaces 39 of both the projecting portions 37 are supported in abutting contact with the main frame 17 via a cushion pad 40 made of an elastic member. Therefore, not only the support of the reservoir tank 35 can be ensured, but also the propagation of vibrations from the main frame 17 to the reservoir tank 35 can be suppressed by the cushion pad 40.

  Although the embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. For example, in the present embodiment, the case where the straddle-type vehicle is a motorcycle has been described, but if the vehicle is equipped with a water-cooled engine, the present invention may be applied to other vehicles such as a motorcycle and a buggy vehicle. Good.

10 Motorcycles (saddle-type vehicles)
12 head pipe 17 main frame (frame member)
23 Engine 30 Radiator 34 Cooling System Mechanism 35 Reservoir Tank 37 Projection 38 Recess 39 Internal Side of Projection

Claims (2)

Cooling a saddle-ride type vehicle having a radiator for dissipating heat of a refrigerant for cooling an engine included in the saddle-ride type vehicle to the outside air, and a reservoir tank communicating with the radiator for temporarily storing the refrigerant in the radiator In the system mechanism,
The radiator is positioned below a front portion of a frame member that extends rearward and downward from the head pipe, and is attached to the frame member,
The reservoir tank is arranged between the radiator and the frame member ,
This reservoir tank is provided with a recess at the center position in the width direction by forming a pair of protrusions protruding upward at both end positions in the width direction on the upper surface.
In the mounted state, when the frame member is fitted in the recess, the projecting portion sandwiches the frame member, and an inner side surface of the projecting portion is configured to be capable of contacting the frame member. Cooling system mechanism for saddle type vehicles. The straddle-type vehicle according to claim 1, wherein the reservoir tank includes a protruding portion that protrudes from an upper surface, and the protruding portion is configured to overlap with the frame member in a side view in a mounted state. Cooling system mechanism.

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