Headlamp mounting structure

Abstract

To suppress light leakage of a head lamp while suppressing deterioration of appearance.SOLUTION: An installation structure of a head lamp (51) includes a head lamp provided with a lens (52) for emitting irradiation light to the front of a vehicle, a lamp cover (41) formed with an opening (43) for exposing the lens, and an elastic cover (80) for closing a gap between the head lamp and the opening of the lamp cover. The optical axis is adjusted by moving the headlamp with respect to the lamp cover, and the gap between the headlamp and the opening of the lamp cover is closed by the elastic cover regardless of the direction of the optical axis of the headlamp.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a headlamp mounting structure. [Background technology]

[0002] Conventionally, straddle-type vehicles have been known in which the lens surface of a headlamp is exposed from an opening in a front cover (see, for example, Patent Document 1). The headlamp described in Patent Document 1 has a dome-shaped outer lens attached to the front opening of a lamp housing. A light source is installed on the rear surface of the lamp housing via a substrate, and an inner lens is installed inside the outer lens and in front of the light source. Light emitted from the light source passes through the inner lens and outer lens, and the light emitted to the outside from the outer lens illuminates the area ahead of the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6490728 Summary of the Invention [Problem to be solved by the invention]

[0004] When adjusting the headlamp's optical axis from the outside, the headlamp is moved independently of the lamp cover. This requires that the lamp cover opening be made larger than the headlamp. If the gap between the headlamp and the lamp cover opening is too large, the vehicle's appearance will be compromised and headlamp light may leak to the outside, impairing the rider's visibility.

[0005] The present invention has been made in view of the above points, and has an object to provide a headlamp mounting structure that can suppress light leakage from the headlamp while suppressing deterioration of the appearance. [Means for solving the problem]

[0006] A headlamp installation structure according to one aspect of the present invention comprises a headlamp provided with a lens that emits light in front of the vehicle, a lamp cover having an opening for exposing the lens, and an elastic cover that closes the gap between the headlamp and the opening in the lamp cover. The optical axis is adjusted by moving the headlamp relative to the lamp cover, and the elastic cover closes the gap between the headlamp and the opening in the lamp cover regardless of the direction of the optical axis of the headlamp, thereby solving the above-mentioned problem. [Effects of the Invention]

[0007] According to the headlamp mounting structure of one aspect of the present invention, even if the lamp cover has a large opening to allow the headlamp to be moved relative to the lamp cover for optical axis adjustment, the elastic cover closes the gap between the headlamp and the lamp cover, improving appearance. In addition, the elastic cover does not deform to hinder headlamp optical axis adjustment, and the elastic cover prevents light leakage from the headlamp, preventing a deterioration in the rider's visibility. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a left side view of the vehicle interior structure of the present embodiment. [Figure 2] FIG. 2 is a left side view of the headlamp and its surroundings according to the present embodiment. [Figure 3] FIG. 2 is a front view of the headlamp and its surroundings according to the present embodiment. [Figure 4] FIG. 2 is a perspective view of a rubber cover according to the present embodiment. [Figure 5] FIG. 4 is a cross-sectional view of the headlamp periphery in FIG. 3 taken along line AA. [Figure 6] 4 is a cross-sectional view of the headlamp periphery in FIG. 3 taken along line BB. DETAILED DESCRIPTION OF THE INVENTION

[0009] A headlamp according to one aspect of the present invention is provided with a lens that emits light toward the front of the vehicle. In this headlamp installation structure, an opening that exposes the lens is formed in the lamp cover, and the openings in the headlamp and lamp cover are closed by an elastic cover. The optical axis is adjusted by moving the headlamp relative to the lamp cover, and the elastic cover closes the gap between the headlamp and the opening in the lamp cover regardless of the orientation of the headlamp's optical axis. Even if the lamp cover opening is large enough to adjust the optical axis by moving the headlamp relative to the lamp cover, the elastic cover closes the gap between the headlamp and the lamp cover, improving the vehicle's appearance. Furthermore, deformation of the elastic cover does not impede headlamp optical axis adjustment, and the elastic cover prevents light leakage from the headlamp, preventing a deterioration in the rider's visibility. [Example]

[0010] A saddle-type vehicle according to this embodiment will now be described with reference to the accompanying drawings. Fig. 1 is a left side view of the internal structure of the vehicle according to this embodiment. In the following drawings, arrow Fr indicates the front of the vehicle, arrow Re indicates the rear of the vehicle, arrow L indicates the left side of the vehicle, and arrow R indicates the right side of the vehicle.

[0011] As shown in Fig. 1, the saddle-ride type vehicle 1 is configured by mounting various parts such as an engine 35 and an electrical system on a body frame 10. A pair of main frames 12 extend diagonally downward and rearward from a head pipe 11 of the body frame 10, and the rear portions of the pair of main frames 12 bend downward to form a pair of body frames 13. A down frame 14 also extends downward from the head pipe 11, and a pair of under loops 15 bent rearward are connected to the lower portion of the down frame 14. The rear ends of the pair of under loops 15 are connected to the lower portions of the pair of body frames 13, so that the body frame 10 is formed into a cradle shape.

[0012] A front fork 21 is steerably supported on the head pipe 11 via a steering shaft (not shown). Handlebars 22 are provided on the upper part of the front fork 21, and a front wheel 23 is rotatably supported on the lower part of the front fork 21. A front fender 24 is provided on the front fork 21, and the front wheel 23 is covered from above by the front fender 24. A fuel tank 25 is placed on the upper part of the pair of main frames 12, and the main frames 12 and the fuel tank 25 are covered from the sides by front side covers 26. A seat 27 is provided behind the fuel tank 25.

[0013] A swing arm 31 is swingably supported by the body frame 13. The swing arm 31 extends rearward from the body frame 13, and a rear wheel 32 is rotatably supported at the rear end of the swing arm 31. A rear fender 33 is provided behind the seat 27, and covers the rear wheel 32 from above. The engine 35 is a four-stroke single-cylinder engine, and is suspended inside the body frame 10 via multiple suspension brackets. A cylinder assembly, which includes a cylinder 37, a cylinder head 38, and a cylinder head cover 39, is attached to the top of a crankcase 36 of the engine 35.

[0014] Furthermore, a housing 61 is provided in front of the head pipe 11, and a meter 28 is attached to the upper part of the housing 61. The housing 61 is covered from the front by a lamp cover 41, and the lens of a headlamp 51 (see FIG. 3) is exposed from an opening in the lamp cover 41. The housing 61 is provided with an optical axis adjustment mechanism for the headlamp 51, and the optical axis adjustment mechanism moves the headlamp 51 independently with respect to the housing 61 and the lamp cover 41. Visibility at night and in bad weather is ensured by appropriately adjusting the illumination range and illumination direction of the headlamp 51.

[0015] Incidentally, when the headlamp 51 is moved independently of the lamp cover 41, the opening of the lamp cover 41 is formed large so as not to interfere with the headlamp 51. The gap between the headlamp 51 and the lamp cover 41 becomes noticeable, degrading the appearance of the vehicle, and there is a risk that the light emitted by the headlamp 51 will be reflected on the back surface of the lamp cover 41 and leak, impairing the rider's visibility. Therefore, in this embodiment, the gap between the opening of the lamp cover 41 and the headlamp 51 is closed with a rubber cover (elastic cover) 80. Even when the headlamp 51 is moved, the rubber cover 80 deforms, so the rubber cover 80 does not interfere with the adjustment of the optical axis.

[0016] The peripheral structure of the headlamp and the rubber cover will be described with reference to Figures 2 to 4. Figure 2 is a left side view of the headlamp and its periphery in this embodiment. Figure 3 is a front view of the headlamp and its periphery in this embodiment. Figure 4 is a perspective view of the rubber cover in this embodiment. Figure 4(A) is a perspective view of the rubber cover as seen obliquely from the front, and Figure 4(B) is a perspective view of the rubber cover as seen obliquely from the rear.

[0017] As shown in Figures 2 and 3, a headlamp 51 is attached to the front of the saddle-ride type vehicle 1. A lens 52 is provided in the headlamp 51, and light is emitted from the lens 52 in front of the vehicle. A lamp cover 41 is attached around the headlamp 51, and an opening 43 is formed in the lamp cover 41 to expose the lens 52. An inverted U-shaped bulge 42 is formed on the front of the lamp cover 41 so as to surround the top and both sides of the headlamp 51. A cover portion protrudes outward in the left and right directions and upward from the outer edge of the bulge 42 of the lamp cover 41.

[0018] The rear face of headlamp 51 is covered from the rear side by housing 61. Housing 61 is formed in a box shape with an open front, and lamp cover 41 is attached to housing 61 so as to cover the front of housing 61. Meter 28 is attached to the top face of housing 61, and headlamp controller 55 is attached to the lower rear face of housing 61. An upper part of housing 61 is supported by upper bracket 72 of front fork 21 via support bracket 71, and a lower part of housing 61 is supported by lower bracket 74 of front fork 21 via support bracket 73.

[0019] The headlamp 51 is also formed so that its optical axis can be adjusted (aimed) from the outside of the housing 61. The headlamp 51 is supported inside the housing 61 via a lamp bracket 58 (see FIG. 6) so that it can swing up and down. An elongated hole (not shown) is formed in the left side surface of the housing 61, and the optical axis of the headlamp 51 is adjusted within the range of the elongated hole by an optical axis adjustment bolt 75 provided in the elongated hole. A rubber cover 80 is attached around the headlamp 51, and the gap between the opening 43 of the lamp cover 41 and the headlamp 51 is closed by the rubber cover 80, improving the appearance of the vehicle.

[0020] Even though the gap between the opening 43 of the lamp cover 41 and the headlamp 51 is filled with the rubber cover 80, the rubber cover 80 deforms in response to the swing of the headlamp 51, allowing adjustment of the optical axis of the headlamp 51. A beak-shaped front fender 24 is attached to the lower bracket 74, and the front fender 24 protects the headlamp 51 and other components from foreign objects that may be thrown up by the front wheel 23 (see Figure 1). The front fender 24 is installed below the housing 61, and the lamp cover 41 and the housing 61 are covered from below by the front fender 24.

[0021] As shown in FIG. 4(A), the central portion of the rubber cover 80 is formed in a frame shape, and the headlamp 51 (see FIG. 2) is exposed from the inside of a frame-shaped portion 81 of the rubber cover 80. A pair of ribs 82 protrudes forward from both side frames of the frame-shaped portion 81, and the pair of ribs 82 face each other in the vehicle width direction with the opening of the frame-shaped portion 81 in between. The facing surfaces of the pair of ribs 82 are inclined outward in the vehicle width direction as they face forward, and are formed along the back surface of the bulge portion 42 (see FIG. 2) of the lamp cover 41. An extension portion 83 protrudes forward from the lower frame of the frame-shaped portion 81, and the extension portion 83 is formed along the opening edge 46 of the lamp cover 41 (see FIG. 5).

[0022] As shown in Figures 4(A) and 4(B), a vertical wall portion 84 projects upward from the upper frame (upper portion) of a frame-shaped portion 81 of the rubber cover 80 toward the vehicle, and the vertical wall portion 84 is formed along the rear surface of the lamp cover 41. A horizontal wall portion 85 projects toward the rear of the vehicle from the upper frame of the frame-shaped portion 81, and the horizontal wall portion 85 divides the space behind the rubber cover 80 into upper and lower portions. As will be described in detail later, the headlamp 51 is housed below the horizontal wall portion 85, and the wiring 77 and the connector 78 (see Figure 5) are housed above the horizontal wall portion 85. A plurality of elongated holes (heat dissipation holes) 86 for heat dissipation are formed in the horizontal wall portion 85, and hot air from the heat sink 54 of the headlamp 51 is discharged through the elongated holes 86.

[0023] The headlamp installation structure will be described with reference to Figures 3, 5, and 6. Figure 5 is a cross-sectional view of the headlamp periphery taken along line AA in Figure 3. Figure 6 is a cross-sectional view of the headlamp periphery taken along line BB in Figure 3.

[0024] 3 and 5, the lens 52 of the headlamp 51 is positioned in the opening 43 of the lamp cover 41, and the gap between the lens 52 and the opening 43 of the lamp cover 41 is blocked by the rubber cover 80 in a front view. In a side view, the tip of the lens 52 is positioned forward of the rubber cover 80, and the tip of the lens 52 is positioned rearward of the tip of the bulge 42 of the lamp cover 41. Although the lens 52 protrudes forward of the rubber cover 80, the bulge 42 of the lamp cover 41 is formed in an inverted U shape in a front view, so the lens 52 is covered by the bulge 42 from both sides in the vehicle width direction and from above.

[0025] An opening edge 46 of the lamp cover 41 faces toward the rear of the vehicle, and is located further rearward than the front end of the headlamp 51. The outer surface of the lens of the headlamp 51 expands radially toward the rear, closing the gap between the lamp cover 41 and the headlamp 51. A frame-shaped portion 81 of a rubber cover 80 is positioned behind the opening edge 46 of the lamp cover 41, and the opening edge 46 and the frame-shaped portion 81 partially overlap. The headlamp 51 is inserted into the frame-shaped portion 81 of the rubber cover 80 from the rear of the vehicle, and the inner edge of the frame-shaped portion 81 comes into contact with the outer peripheral surface of the lens 52, causing light to be blocked by the rubber cover 80 and reducing light leakage.

[0026] 3 and 6, a pair of ribs 82 of the rubber cover 80 fit inside the bulge portion 42 of the lamp cover 41. The opposing surfaces of the pair of ribs 82 contact the opening edge 46 of the lamp cover 41 from the outside in the vehicle width direction, thereby positioning the rubber cover 80 relative to the lamp cover 41 in the vehicle width direction. Because the bulge portions 42 extend vertically on both sides of the headlamp 51, misalignment of the headlamp 51 in the vehicle width direction relative to the lamp cover 41 is suppressed even if the headlamp 51 swings up and down during optical axis adjustment. Furthermore, the pair of ribs 82 are not exposed to the outside, improving the appearance and increasing the degree of freedom in the shape of the pair of ribs 82.

[0027] 3 and 5, a vertical wall portion 84 protrudes upward from the upper frame of the frame-shaped portion 81 of the rubber cover 80 toward the vehicle, and the vertical wall portion 84 is positioned closer to the rear surface of the lamp cover 41 toward the vehicle top. By reducing the gap between the vertical wall portion 84 and the lamp cover 41, rearward exposure of the lens 52 is reduced, and the vertical wall portion 84 reduces light leakage from the headlamp 51 toward the rider. An extension portion 83 protrudes forward from the lower frame of the frame-shaped portion 81 of the rubber cover 80, and the opening edge 46 of the lamp cover 41 is covered from below by the extension portion 83, thereby reducing light leakage from the headlamp 51 toward the rider's side.

[0028] A horizontal wall portion 85 projects toward the rear of the vehicle from the upper frame of the frame-shaped portion 81 of the rubber cover 80, and the horizontal wall portion 85 covers the headlamp 51 from above, thereby reducing light leakage from the headlamp 51 toward the rider. The horizontal wall portion 85 and the vertical wall portion 84 form an installation space for the wiring 77 and the connector 78. The horizontal wall portion 85 and the vertical wall portion 84 restrict the movement of the wiring 77 and the connector 78, preventing the wiring 77 and the connector 78 from coming into contact with the headlamp 51 and the lamp cover 41. Furthermore, there is no need to fix the wiring 77 and the connector 78 to the lamp cover 41 or the like with clamps, thereby reducing the number of parts.

[0029] Additionally, a lamp housing 53 is provided behind the lens 52, and a heat sink 54 for heat dissipation is formed on the upper side of the lamp housing 53. The heat sink 54 has multiple vertical fins arranged in parallel and horizontal rows, and air passes between the multiple vertical fins from below to above, thereby effectively cooling the headlamp 51. Multiple elongated holes 86 (see FIG. 4(B)) are formed in the side wall portion 85 of the rubber cover 80. Hot air radiated from the heat sink 54 is discharged through the multiple elongated holes 86, preventing heat from building up around the headlamp 51.

[0030] In this embodiment, the optical axis of the headlamp 51 is adjusted by moving the headlamp 51 independently with respect to the lamp cover 41, rather than by using a reflector within the headlamp 51. Regardless of the direction of the optical axis of the headlamp 51, the rubber cover 80 closes the gap between the headlamp 51 and the opening 43 of the lamp cover 41. The rubber cover 80 is attached to the headlamp 51, and the headlamp 51 and the rubber cover 80 move together when adjusting the optical axis. A gap exists between the opening edge 46 of the lamp cover 41 and the rubber cover 80, but this gap is covered by the vertical wall portion 84 and extension portion 83 of the rubber cover 80.

[0031] A labyrinth structure is formed with the vertical wall portion 84 of the rubber cover 80 facing the rear surface of the lamp cover 41. Light emitted from the headlamp 51 enters the gap between the upper edge of the opening edge 46 of the lamp cover 41 and the upper frame of the rubber cover 80, but the upper labyrinth structure prevents the light from leaking upward. In addition, a labyrinth structure is formed with the extension portion 83 of the rubber cover 80 facing the lower edge of the opening edge 46 of the lamp cover 41. Light emitted from the headlamp 51 enters the gap between the opening edge 46 of the lamp cover 41 and the lower frame of the rubber cover 80, but the lower labyrinth structure prevents the light from leaking downward.

[0032] Furthermore, when the optical axis of the headlamp 51 is adjusted upward, the headlamp 51 is swung upward and the extension 83 of the rubber cover 80 hits the lower edge of the opening edge 46 of the lamp cover 41. The extension 83 hits the opening edge 46 of the lamp cover 41 and deforms, allowing the optical axis of the headlamp 51 to be adjusted upward. When the optical axis of the headlamp 51 is adjusted downward, the headlamp 51 is swung downward and the vertical wall 84 of the rubber cover 80 hits the rear surface of the lamp cover 41. The vertical wall 84 hits the rear surface of the lamp cover 41 and deforms, allowing the optical axis of the headlamp 51 to be adjusted downward.

[0033] As described above, according to the installation structure for headlamp 51 of this embodiment, even if the opening 43 of lamp cover 41 is formed large so that the headlamp 51 can be moved relative to the lamp cover 41 to adjust the optical axis, the rubber cover 80 closes the gap between the headlamp 51 and the lamp cover 41, thereby improving the appearance. Furthermore, deformation of the rubber cover 80 does not hinder adjustment of the optical axis of the headlamp 51, and the rubber cover 80 prevents light leakage from the headlamp 51, preventing a deterioration in the rider's visibility.

[0034] In this embodiment, the pair of ribs contact the opening edge of the lamp cover from the outer side in the vehicle width direction, but the pair of ribs may also contact the opening edge of the lamp cover from the inner side in the vehicle width direction.

[0035] Furthermore, in this embodiment, a rubber cover is used as an example of the elastic cover, but the elastic cover may be made of any soft material that does not interfere with the adjustment of the optical axis of the headlamp.

[0036] The headlamp mounting structure of this embodiment is not limited to the saddle-ride type vehicle described above, and may be adopted in other types of saddle-ride type vehicles. Note that the saddle-ride type vehicle is not limited to all vehicles in which the rider sits astride the seat, but also includes scooter-type vehicles in which the rider does not sit astride the seat.

[0037] As described above, the first aspect includes a headlamp (51) provided with a lens (52) that emits light ahead of the vehicle, a lamp cover (41) formed with an opening (43) for exposing the lens, and an elastic cover (80) that closes the gap between the headlamp and the lamp cover opening. The optical axis is adjusted by moving the headlamp relative to the lamp cover, and the elastic cover closes the gap between the headlamp and the lamp cover opening regardless of the direction of the headlamp's optical axis. With this configuration, even if the lamp cover opening is large enough to adjust the optical axis by moving the headlamp relative to the lamp cover, the elastic cover closes the gap between the headlamp and the lamp cover, improving the vehicle's appearance. Furthermore, deformation of the elastic cover does not impede headlamp optical axis adjustment, and the elastic cover prevents light leakage from the headlamp, preventing a deterioration in the rider's visibility.

[0038] In the second embodiment, the opening edge (46) of the lamp cover is directed toward the rear of the vehicle and is located further rearward than the front end of the headlamp. This configuration reduces the gap between the lamp cover and the headlamp, and the elastic cover can reduce light leakage from the headlamp toward the rider.

[0039] In the third aspect, in the first or second aspect, the elastic cover is provided with a pair of ribs (82) that contact the opening edge of the lamp cover from the vehicle width direction. With this configuration, the pair of ribs of the elastic cover contact the opening edge of the lamp cover, thereby suppressing misalignment of the headlamp in the vehicle width direction relative to the lamp cover when adjusting the optical axis of the headlamp.

[0040] In a fourth aspect, in the third aspect, a pair of ribs are positioned inside the lamp cover and contact the opening edge of the lamp cover from the outside in the vehicle width direction. With this configuration, the pair of ribs are not exposed to the outside, improving the appearance. Also, the degree of freedom in the shape of the ribs is improved.

[0041] In a fifth aspect, in any one of the first to fourth aspects, a vertical wall portion (84) projects upward from the upper portion of the elastic cover, and the vertical wall portion is brought closer to the rear surface of the lamp cover toward the upper portion of the vehicle. With this configuration, the vertical wall portion of the elastic cover reduces light leakage from the headlamp toward the rider.

[0042] In the sixth aspect, in the fifth aspect, a horizontal wall portion (85) projects from the upper portion of the elastic cover toward the rear of the vehicle, and the horizontal wall portion and the vertical wall portion form an installation space for the wiring (77) and / or connector (78). With this configuration, the horizontal wall portion of the elastic cover reduces light leakage from the headlamp toward the rider. The horizontal wall portion and the vertical wall portion restrict movement of the wiring and / or connector, preventing the wiring and / or connector from coming into contact with the headlamp and lamp cover. In addition, parts such as clamps can be reduced.

[0043] A seventh aspect is any one of the first to sixth aspects, in which a heat sink (54) for heat dissipation is provided behind the lens, and a side wall portion extends from the upper part of the elastic cover toward the rear of the vehicle so as to cover the heat sink from above, and the side wall portion has multiple heat dissipation holes (long holes 86). With this configuration, the side wall portion of the elastic cover reduces light leakage from the headlamp toward the rider. In addition, hot air from the heat sink can be exhausted through the multiple heat dissipation holes.

[0044] Although the present embodiment has been described, other embodiments may be made by combining the above-described embodiments and modifications in whole or in part.

[0045] Furthermore, the technology of the present invention is not limited to the above-described embodiments, and various changes, substitutions, and modifications may be made without departing from the spirit of the technical idea. Furthermore, if the technical idea can be realized in a different way due to technological advances or other derived technologies, it may be implemented using that method. Therefore, the claims cover all embodiments that may fall within the scope of the technical idea. [Explanation of symbols]

[0046] 41: Lamp cover 43 :Aperture 46: Opening edge 51: Headlamp 52: Lens 54: Heat sink 77: Wiring 78: Connector 80: Rubber cover 82: Rib 84:Vertical wall part 85: Side wall 86: Slot (heat dissipation hole)

Claims

1. a headlamp provided with a lens that emits light ahead of the vehicle; a lamp cover having an opening for exposing the lens; an elastic cover that closes a gap between the headlamp and the opening of the lamp cover, The headlamp is moved relative to the lamp cover to adjust the optical axis, A headlamp installation structure, characterized in that the elastic cover closes the gap between the headlamp and the opening of the lamp cover regardless of the direction of the optical axis of the headlamp.

2. 2. The headlamp installation structure according to claim 1, wherein an opening edge of the lamp cover faces rearward of the vehicle and is located rearward of a front end of the headlamp.

3. 3. The headlamp mounting structure according to claim 1, wherein the elastic cover is provided with a pair of ribs that contact the opening edge of the lamp cover in the vehicle width direction.

4. 4. The headlamp mounting structure according to claim 3, wherein the pair of ribs are located inside the lamp cover and contact the opening edge of the lamp cover from outside in the vehicle width direction.

5. 3. The headlamp mounting structure according to claim 1, wherein a vertical wall portion extends upward from an upper portion of the elastic cover toward the vehicle, and the vertical wall portion is positioned toward the vehicle upward and close to a rear surface of the lamp cover.

6. The headlamp installation structure according to claim 5, characterized in that a horizontal wall portion extends from the upper portion of the elastic cover toward the rear of the vehicle, and the horizontal wall portion and the vertical wall portion form an installation space for wiring and / or connectors.

7. A heat sink for heat dissipation is provided behind the lens, 3. The headlamp installation structure according to claim 1, wherein a side wall portion extends from the upper portion of the elastic cover toward the rear of the vehicle so as to cover the heat sink from above, and a plurality of heat dissipation holes are formed in the side wall portion.

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