JP4388863B2 - Body cover structure for motorcycles - Google Patents

Description

  The present invention relates to a vehicle body cover structure for a motorcycle, and more particularly to a structure capable of ensuring necessary rigidity without causing an increase in weight even though a relatively large exhaust opening is provided.

  A windshield notch is provided at the upper end of the vehicle body cover, and a buffer member is provided so as to face the opening, and this is supported by the vehicle body frame so that the object that collides with the motorcycle from the side is buffered. The shock transmitted to the body frame was reduced.

JP2003-72625A

  In the case of the above conventional structure, the body cover is difficult to ensure rigidity in shape due to the notch in the upper end. For this reason, it may be possible to secure the required rigidity by increasing the thickness of the vehicle body cover, but this would increase the weight. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to ensure the necessary rigidity without increasing the weight, although a relatively large exhaust opening is provided.

In order to solve the above-mentioned problems, the present invention relates to a motorcycle body cover structure for a motorcycle according to claim 1 in which an opening for exhausting air is provided on a side surface of a vehicle body cover that covers the outside of the motorcycle body. In the body cover structure for wheels,
A connecting member that spans the opening and connects the portions of the vehicle body cover that face each other across the opening ;
The connecting member includes a bracket that is coupled to the vehicle body cover, and a cushioning material that is coupled to the outside of the vehicle body of the bracket,
The bracket has a contact portion that is separated from the main frame and faces the main frame with a gap therebetween, and is held by the vehicle body cover opening,
The cushioning material has an outer surface provided along the outer surface of the vehicle body cover, and is fixed to the bracket by being fitted into a hole provided in the bracket .

According to a second aspect of the present invention, in the first aspect , the body cover covers a part of a side surface of the body frame, and the cushioning material is disposed so as to partially overlap along a lower end of the main frame constituting the body frame. It is characterized by that.

A third aspect is characterized in that, in the first aspect , the bracket is fixed from the inside of the vehicle body cover.

A fourth aspect is characterized in that, in the first or third aspect , the connecting member and the vehicle body cover are coupled to the vehicle body frame by fastening together.

According to the first aspect of the present invention, since the opening of the vehicle body cover is connected by the connecting member that spans the opening, the portions of the vehicle body cover that are opposed to each other with the opening interposed therebetween are connected. Without it, it is easy to ensure the rigidity of the body cover. For this reason, the required rigidity can be ensured without causing an increase in weight even though a relatively large exhaust opening is provided.
Further, since the fixing portion for fixing the cushioning material is a hole, a reduction in the rigidity of the bracket can be avoided as much as possible, and the rigidity of the vehicle body cover is easily secured.
Furthermore, since the outer surface of the cushioning material is aligned with the outer surface of the vehicle body cover, the cushioning material can be smoothly brought into contact with the rider's foot. In addition, air resistance can be suppressed.

According to the second aspect , since the cushioning material is arranged so as to partially overlap along the lower end of the main frame constituting the vehicle body frame, the lower end of the main frame can be covered without any appearance.

According to the third aspect , since the bracket is fastened to the vehicle body cover from the inside by the fastening member, the fastening member is not seen from the outside. Further, at the time of manufacturing and assembling, the vehicle body cover can be assembled to the vehicle body frame side in a state where the connecting member is connected to the vehicle body cover in advance, so that the assembly becomes easy and workability is improved.

According to the fourth aspect , since the connecting member is fastened together with the vehicle body cover to the vehicle body frame, the rigidity of the vehicle body cover can be further increased. Moreover, the impact of what collides from the side of the vehicle body can be received by the vehicle body frame.

Hereinafter, a first embodiment will be described based on the drawings. FIG. 1 is a side view of a motorcycle to which the present invention is applied, and a vehicle body cover is indicated by a virtual line.
In this motorcycle, the upper portions of a pair of left and right front forks 2 that support the front wheel 1 at the lower end are supported by the front end portion of the vehicle body frame 4 via the head pipe 3, and the front wheel 1 can be steered by the handle 5. It is said.

  The vehicle body frame 4 is divided into left and right parts from the head pipe 3 and extends obliquely downward to the rear, and connects between the main frame 6 and the head pipe 3, and is an engine that protrudes downward in a substantially triangular shape when viewed from the side. The hanger 7, the center plate 8 extending downward from the rear end of the main frame 6, and the stay 9 provided so as to project upward from the rear end of the main frame 6 are connected to each other and obliquely ascend backward. The seat rail 10 extends.

  A fuel tank 11 is supported on the main frame 6, and an air cleaner 12 is accommodated in a space formed on the front side thereof. Below the main frame 6, the engine 13 is supported by the vehicle body frame 4, and the cylinder head portion 14 enters inside the left and right engine hangers 7.

  Of the crankcase 20 of the engine 13, the front part is supported by the lower end part of the engine hanger 7, the rear upper part is supported by the connecting part between the main frame 6 and the center plate 8, and the rear lower part is supported by the lower part of the center plate 8.

  The exhaust pipe 21 extending from the exhaust port of the cylinder head portion 14 passes through the front of the crankcase 20 to the lower part thereof, extends rearward substantially horizontally, bends rearward of the crankcase 20, and extends upward. To the rear of the seat rail 10 and connected to the muffler 22.

  The center plate 8 is supported by the pivot shaft 24 so that the front end of the rear arm 23 can swing freely, the intermediate portion is connected to the vehicle body frame 4 via a shock absorber (not shown), and the rear wheel 25 is supported at the rear end. ing. The rear wheel 25 is rotationally driven by the engine 13 via the chain 26.

  A rider seat 27 and a pillion seat 28 are supported on the seat rail 10, and a pillion step 29 is attached to an intermediate portion of the seat rail 10 via a stay protruding downward. In the figure, reference numeral 30 is a vehicle body cover, 31 is an intake inlet, 32 is an intake duct, 33 is an oil filter, 34 is a side stand, and 35 is a battery. The intake duct 32 takes in outside air from the intake inlet 31 to the air cleaner 12. The battery 35 is supported by the seat rail 10 below the rider seat 27.

FIG. 2 is an enlarged view of the side surface of the vehicle body of FIG. On the side surface of the engine hanger 7, a smaller duct hole 36 is opened above the maintenance hole 16, and the intake duct 32 penetrates the duct hole 36 inward and outward.
From the maintenance hole 16, the intake pipe 1 that connects the intake port of the cylinder head portion 14 and the air cleaner 12 is externally viewed.

  The maintenance hole 16 has a substantially inverted triangular shape, and a portion corresponding to the bottom is constituted by the lower side of the main frame 6. Further, the lower hypotenuse equivalent portion is constituted by a connecting frame 37. The connection frame 37 connects the lower part of the maintenance hole 16 between an attachment part 38 formed on the lower part 7 a of the engine hanger 7 and an attachment part 39 formed on the lower part of the main frame 6.

  A concave portion 17 is formed on the side surface of the engine hanger 7 so as to extend obliquely downward from the maintenance hole 16. The concave portion 17 gradually widens forward in a side view and reaches the front edge of the engine hanger 7 while being curved. This position is near the rear of the radiator 18.

  The front portion of the vehicle body is appropriately covered with a resin vehicle body cover 30. The front portion 40 of the vehicle body cover 30 covers the front of the head pipe 3 (FIG. 1). A side opening 41 of the vehicle body cover 30 is provided with a front opening 42 that opens forward in the vicinity of the radiator 18 and a rear opening 43 that overlaps the maintenance hole 16 and opens obliquely rearward and upward. The rear opening 43 is provided above the rear portion of the side surface 41.

  FIG. 3 is a view showing a portion corresponding to FIG. 2 in a part of the side surface 41 of the vehicle body cover 30. A space between the front opening 42 and the rear opening 43 is an air guide path 44. The air guide path 44 is a concave portion that is formed integrally with the side surface 41 of the vehicle body cover 30 and that is recessed inward of the vehicle body, and is disposed along the engine hanger 7. The exhausted air that has passed through the radiator 18 and has a high temperature is discharged from the front opening 42 and smoothly guided to the outside of the vehicle body through the air guide path 44. Further, the heat generated from the cylinder head portion 14 is discharged from the rear opening 43 to the outside of the vehicle body.

  The rear opening 43 is formed by cutting out the upper portion of the side surface 41, and the vicinity thereof is the vicinity of the rider's knee grip portion. Between the front opening edge 45 and the rear opening edge 46 of the side surface 41 sandwiching the rear opening 43 in the front-rear direction, both ends of the bracket 48 constituting the connecting member 47 in the length direction are attached. The connecting member 47 traverses the rear opening 43 and spans the front opening edge 45 and the rear opening edge 46, and the cushioning material 50 constituting the connecting member 47 is located outside the vehicle body in the rear opening 43. It is provided facing the side.

The cushioning material 50 is disposed so as to partially overlap the lower end of the main frame 6 in a side view, and the outer surface of the cushioning material 50 is along the outer surface of the side surface 41.
Further, the cushioning member 50 is disposed in a space surrounded by the cylinder head portion 14 at the front, the air cleaner 12 at the upper side, and the fuel tank 11 at the rear side (see FIG. 2).

  4 shows a longitudinal section of the connecting member 47 (a section corresponding to line 4-4 in FIG. 2). The bracket 48 constituting the connecting member 47 is made of metal or appropriate resin and has a substantially band shape. Both longitudinal ends 51, 51 overlap the vehicle body inside the front opening edge 45 and the rear opening edge 46, and screws. The fastening member 52 is attached to the bosses 53 of the front opening edge 45 and the rear opening edge 46 from the inside of the vehicle body. The boss 53 is reinforced with ribs 54.

  The intermediate portion of the bracket 48 is bent outwardly of the vehicle body and enters the rear opening 43, and the mounting legs 57 formed integrally protruding from the cushioning material 50 are inserted into the mounting holes 56 formed therein, thereby buffering. A material 50 is attached to the bracket 48.

  The cushioning material 50 is made of a material having high elasticity such as rubber or elastomer, and is attached by providing an enlarged portion 58 at the tip of the mounting leg 57 and pushing it into the mounting hole 56 so as to penetrate to the opposite side. In the case of thermoplasticity, it can be attached by heat caulking or the like. The cushioning material 50 enters the rear opening 43 and is located on the outer side of the vehicle body, and its outer surface is parallel to the outer surface S of the side surface 41 in the vicinity and protrudes outward of the vehicle body.

  Next, the effect in this embodiment is demonstrated. As shown in FIGS. 3 and 4, since the connecting member 47 is stretched over the rear opening 43 and the front opening edge 45 and the rear opening edge 46 are connected, the connecting member 47 causes the rear opening 43 to be cut out. It is possible to reinforce the upper part of the side surface 41 that is formed.

  For this reason, since the rigidity of the vehicle body cover 30 becomes high, it is easy to ensure the rigidity of the vehicle body cover without making it too thick. As a result, the required rigidity can be ensured without increasing the weight, although the rear opening 43, which is a relatively large exhaust opening, is provided in a cutout shape.

  Further, when a collision load F (FIG. 4) is applied from the side of the vehicle body, this is received by the connecting member 47. At this time, the connecting member 47 can first absorb the collision load with the cushioning material 50, and further can be absorbed by elastic deformation of the bracket 48.

  Furthermore, since the fixing portion for fixing the cushioning material 50 is the hole portion 56 of the bracket 48, a reduction in the rigidity of the bracket 50 can be avoided as much as possible, and the rigidity of the vehicle body cover 30 can be easily secured. In addition, since the connecting member 47 has the bracket 48 and the buffer material 50 separated from each other, only the damaged portion can be replaced, which is economical.

  In addition, since the cushioning material 50 is disposed so as to partially overlap along the lower end of the main frame 6 constituting the vehicle body frame 4, the cushioning material 50 is originally exposed to the appearance of the notched rear opening 43. Thus, the lower end of the main frame is concealed so as not to be seen, so that the appearance can be covered well.

  Moreover, since the outer side surface of the cushioning material 50 is aligned with the outer side surface in the vicinity of the side surface 41 of the vehicle body cover 30, even when the rider's foot is in the vicinity of the rear opening 43, the cushioning material 50 is placed on the rider's foot. Smooth contact can be achieved. In addition, air resistance can be suppressed.

  Furthermore, since the bracket 48 is fastened from the inner side to the boss 53 on the side surface of the vehicle body cover by the fastening member 52, the fastening member 52 does not appear. Further, since the connecting member 47 can be assembled to the vehicle body frame 4 in a state of being coupled to the vehicle body cover 30 at the time of manufacturing and assembling, the assembly becomes easy and workability is improved.

FIG. 5 is a first reference example in which the attachment structure of the connecting member is slightly changed. In this example, the attachment bosses 60 are formed to protrude laterally from the lower part of the side surface of the main frame 6 and the attachment part 39. 60 is overlapped with through holes 61 formed at both ends in the longitudinal direction of the bracket 48, and further, through holes of mounting recesses 62 provided at the front opening edge 45 and the rear opening edge 46 are overlapped from the outside. The front opening edge 45, the rear opening edge 46 and the connecting member 47 are attached to the mounting boss 60 together with the stepped bolts 63.

  In this way, since the collision load F can be received by the main frame 6 having high rigidity, the vehicle body cover 30 can be made more rigid. In addition, the side surface 41 and the connecting member 47 of the vehicle body cover 30 can be attached to the main frame 6 with a small number of man-hours by joint fastening. The positional relationship shown in FIG. 3 between the main frame 6 and the connecting member 47 is the same.

FIG. 6 is a view corresponding to FIG. 3 for showing the relationship between the side surface 41 of the vehicle body cover and the main frame 6 applied to the second embodiment and the reference example . 3 is different from FIG. 3 in that the entire cushioning material 50 constituting the connecting member 47 overlaps the lower portion of the main frame 6 in the side view shown in the drawing. The other parts have almost the same structure.

  As apparent from FIG. 7, which is a cross section corresponding to the line 7-7 in FIG. 6, the bracket 48 is positioned close to the outer surface of the main frame 6. Both ends of the bracket 48 in the length direction are formed with contact portions 70 that bend and protrude toward the main frame 6, and are arranged so as to form a slight gap d between the main frame 6 and the collision load F. Thus, the contact portion 70 comes into contact with the main frame 6.

  In this way, the contact portion 70 contacts the main frame 6 only when the collision load F is received, and the collision load F can be received by the high rigidity of the in-frame 6. Further, in the state where the collision load F is not applied, the contact portion 70 is not in contact with the main frame 6, so that the assembly error can be absorbed by this gap, and the assemblability is improved.

FIG. 8 is a second reference example and corresponds to FIG. It is the same that the side surface 41 and the connecting member 47 are fastened to the mounting boss 60 on the main frame 6 side by the fastening member, but in this example, the contact portion 70 is further provided on the bracket 48 and the collision load F is applied to the connecting member. When it hits 47, it contacts the side surface of the main frame 6, and when no collision load F is applied, the connecting member 47 is not in contact with the main frame 6. In this way, both the advantages of the first reference example of FIG. 5 and the advantages of the second embodiment of FIG. 7 can be enjoyed.

Incidentally, the present invention is capable of modifications and applications to various not limited to the above you facilities embodiment, for example, connecting member 47 may not necessarily be formed a bracket 48 and the buffer material 50 separately. A material having an appropriate rigidity and rich in elasticity can be integrally formed.

Side view of a motorcycle to which the present invention is applied Enlarged view of the side surface of the vehicle body applied to the first and second embodiments 2 is a side view of the vehicle body cover in a portion corresponding to FIG. Sectional view of the connecting member in the length direction Sectional drawing corresponding to FIG. 4 which concerns on a 1st reference example The figure corresponding to FIG. 2 applied to 2nd Embodiment and a reference example Sectional drawing corresponding to FIG. 4 which concerns on 2nd Embodiment Sectional drawing corresponding to FIG. 5 which concerns on a 2nd reference example

Explanation of symbols

6: Main frame, 7: Engine hanger, 14: Cylinder head, 16: Maintenance hole, 30: Body cover, 41: Side, 42: Front opening, 43: Rear opening, 47: Connecting member, 48: Bracket, 50: cushioning material

Claims (5)

In a vehicle body cover structure for a motorcycle in which an opening for exhausting air is provided on a side surface of a vehicle body cover that covers the outside of the vehicle body of the motorcycle,
A connecting member that spans the opening and connects the portions of the vehicle body cover that face each other across the opening ;
The connecting member includes a bracket that is coupled to the vehicle body cover, and a cushioning material that is coupled to the outside of the vehicle body of the bracket,
The bracket has a contact portion that is separated from the main frame and faces the main frame with a gap therebetween, and is held by the vehicle body cover opening,
The shock absorbing material is provided on an outer surface of the vehicle body cover along the outer surface of the vehicle body cover, and is fixed to the bracket by fitting into a hole provided in the bracket. Body cover structure. 2. The vehicle body cover according to claim 1 , wherein the vehicle body cover covers a part of a side surface of the vehicle body frame, and the cushioning material is disposed so as to partially overlap along a lower end of a main frame constituting the vehicle body frame. Body cover structure for motorcycles. The body cover structure for a motorcycle according to claim 1 , wherein the bracket is fixed to the body cover from the inside. 4. The vehicle body cover structure for a motorcycle according to claim 1 or 3 , wherein the connecting member and the vehicle body cover are coupled to the vehicle body frame by fastening together. The opening for exhausting air formed in the vehicle body cover is formed with two gaps arranged in the front-rear direction in a side view, and the connecting member is provided in a rear opening. The vehicle body cover structure for a motorcycle described.

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