JP4295015B2 - Under-seat structure of motorcycle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to an under-seat structure of a motorcycle, and more particularly to a structure around a seat post and a seat post.
[0002]
[Prior art]
  As a structure under a seat of a motorcycle, a structure in which a frame-like support member for attaching a seat is attached to a rear frame is known (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
          JP 2002-284064 (page 3-4, FIG. 2)
[0004]
  FIG. 2 of Patent Document 1 will be described with reference to FIG. In addition, the code was reassigned.
  FIG. 19 is a side view showing the under-seat structure of a conventional motorcycle. A tower-like support member 303 is attached to the rear frame 302 of the motorcycle 301, and a seat 304 is attached to the upper portion of the support member 303. It shows that an article storage space 306 for storing a long stored item is formed below. A storage unit bottom plate 308 forms the bottom of the article storage space 306.
[0005]
[Problems to be solved by the invention]
  If an article is placed on the storage unit bottom plate 308 in order to store the article in the article storage space 306, the article gets wet with rain when it rains. In order to prevent the article from getting wet by rain, for example, a side wall may be attached to the support member 303 to cover the four sides of the article storage space 306, but this increases the number of parts and makes the structure complicated. Weight also increases. In addition, it becomes difficult to take out articles from the article storage space 306, and the usability deteriorates. In addition, if there is no structure that gives a new impression of the article storage space 306 that does not have an external partition, it is not preferable from the viewpoint of improving the merchantability.
[0006]
  The object of the present invention is to improve the under-seat structure of a motorcycle to eliminate special rain avoidance, to suppress the increase in the number of parts and weight, and to improve the usability as a simple structure in terms of storage, and also the motorcycle The aim is to further improve the product quality.
[0007]
[Means for Solving the Problems]
  In order to achieve the above object, according to a first aspect of the present invention, in a motorcycle in which a seat frame is attached to a seat post and a seat is attached to the seat frame, the seat frame is covered with a seat in a top view and an article is exposed by the seat frame. By holding the structure in this state, an article storage space is formed below the seat.In addition, a charger for charging the battery is disposed in the lower part of the article storage space, a charger is attached to the seat post via a support member, and a charging cord for energizing the charger is disposed in the seat post. So that the tip can be removed from the top edge of the seatpost.It is characterized by that.
[0008]
  Covering the seat frame with the seat and holding the article in an exposed state with the seat frame allows the article to be stored directly under the seat, without providing a cover or the like on the side of the article storage space. In addition, the stored article does not rain, and a special structure for avoiding rain of the stored article becomes unnecessary. In addition to such a structure, since the seat frame and the seat are simply attached to the seat post, the number of parts can be reduced and the weight can be reduced.
[0009]
  In addition, for example, when the article is a helmet, if the helmet is held in the seat frame, a novel appearance that cannot be seen at first glance when the helmet is stored under the seat can be obtained. Product appeal can be enhanced, and further improvement in the product quality of motorcycles can be achieved.
  Furthermore, if the seat is opened and closed, the helmet can be easily taken out by opening the seat, and the usability when storing articles can be improved.
[0010]
  AlsoBy arranging the charger and the charging cord in the dead space around the seat post and inside the seat post, the space of the electric vehicle can be used effectively.
[0011]
  Claim 2Is characterized in that the charger is arranged adjacent to the seat post.
  By arranging the charger adjacent to the seat post, the charging cord can be made shorter and the weight can be reduced.
[0012]
  According to a third aspect of the present invention, the battery is disposed below the floor step.
[0013]
  According to a fourth aspect of the present invention, a power unit is attached to the lower portion of the seat post so as to be swingable up and down, and the power unit includes a power control unit in the front half and an electric motor in the rear half.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
  FIG. 1 is a side view of a motorcycle according to the present invention. An electric vehicle 10 as a motorcycle is attached to a front part of a vehicle body frame 11 so as to be rotatable, and attached to an upper part of the handle shaft 12. A handle 13, a front fork 14 attached to the lower portion of the handle shaft 12, a front wheel 16 attached to the lower end of the front fork 14, a floor step 17 provided at the center of the vehicle body frame 11, and a lower portion of the floor step 17 Battery 18 and 18 (only the reference numeral 18 on the front side is shown), a swing type power unit 22 attached to a lower part of a seat post 21 constituting the rear part of the vehicle body frame 11 so as to freely swing up and down, The rear wheel 23 attached to the rear, the upper part of the power unit 22 and the rear cushion passed to the seat post 21 side. The unit 24, a charging / voltage conversion device 25 as a charger attached to the middle portion of the seat post 21, a tail lamp 26 disposed behind the charging / voltage conversion device 25, and an upper end portion of the seat post 21 And a sheet 27.
[0015]
  The vehicle body frame 11 includes a head pipe 31 that rotatably supports the handle shaft 12 at the front portion.
  The handle 13 includes an arm 33 attached to the upper end of the handle shaft 12, a handle support member 34 extending upward from the arm 33, and a handle bar 35 attached to the upper end of the handle support member 34. By providing 34, the head pipe 31 can be disposed at a low position, the body frame 11 can be reduced in size, and the weight of the body frame 11 can be reduced.
[0016]
  The battery 18 is obtained by wrapping a plurality of cylindrical battery cells with a resin shrink pack (packaging material that is shrunk by heat and wrapped).
[0017]
  The charging / voltage converting device 25 is used for a charger that rectifies a commercial power source into a direct current, steps down the voltage to a predetermined voltage, and sends a current to the battery 18, and a battery voltage that is a high voltage for driving an electric motor for an electrical component such as a tail lamp. It comprises a DC-DC converter that converts to a low voltage.
[0018]
  That is, the charging / voltage converting device 25 is configured integrally with a charger and a DC-DC converter. Hereinafter, in the present embodiment, the charging / voltage conversion device 25 will be described as an integrated unit of a charger and a DC-DC converter, but of course, the charger and the DC-DC converter are configured separately. May be. For example, the charger may be placed close to the battery 18 and the DC-DC converter may be placed close to an electrical component such as a tail lamp.
[0019]
  Here, 41 and 42 are headlamps and a main switch attached to the front part of the vehicle body frame 11, 43 is a front fender that covers the front wheel 16, and 44 is an under cover that covers the lower part of the floor step 17, 47 is a side stand, 48 Is a rear fender that covers the upper part of the rear wheel 23, 51 is a license plate attached to the lower part of the tail lamp 26, and 52 is a helmet stored under the seat 27.
[0020]
  FIG. 2 is a side view showing a vehicle body frame of an electric vehicle according to the present invention. The vehicle body frame 11 includes the above-described head pipe 31, a down pipe 61 extending straight downward from the head pipe 31, and the down pipe 61. A pair of left and right lower pipes 62, 62 extending downward and upward from the pipe 61, the above-described seat shape 21 attached to the lower pipes 62, 62, and the seat post 21 The seat frame 63 extends backward from the upper end portion, and the intermediate frame 64 as a support member extends rearward from the intermediate portion of the seat post 21. Reference numerals 66, 66, 67, 67, 68, and 68 (only reference numerals 66, 67, and 68 are shown on the front side) are reinforcing members, and 71 is a seat post for attaching a swing shaft of the power unit 22 (see FIG. 1). 21 is a power unit support member attached to the lower end of 21.
[0021]
  By forming the head pipe 31, down pipe 61, lower pipes 62, 62 and seat post 21 of the vehicle body frame 11 in a substantially U shape, as shown in FIG. 13 and the seat 27, while supporting the floor step 17 at the bottom of the U-shape and storing the battery 18, the body frame 11 having the function necessary for the electric vehicle 10 can be provided. .
[0022]
  FIG. 3 is a plan view of the electric vehicle according to the present invention, in which lower pipes 62 and 62 of the vehicle body frame 11 are arranged below a substantially rectangular floor step 17, and the batteries 18 and 62 are arranged between the lower pipes 62 and 62. 18 is arranged side by side on the left and right. Reference numeral 77 denotes a grip for adjusting the output of an electric motor (described later), and 78 and 78 denote turn signals attached to the left and right of the tail lamp 26. The grip 77 is configured by gripping and rotating a grip itself used in a normal motorcycle or the like, or a lever type (sum throttle) used in an ATV (All Terrain Vehicle) or the like. Also good.
[0023]
  FIG. 4 is a plan view showing a vehicle body frame of an electric vehicle according to the present invention. By making the seat frame 63 of the vehicle body frame 11 circular, elliptical, or a shape close to these, the helmet 52 (see FIG. 1) is shown. The edge is hung on the inside of the seat frame 63 to indicate that the helmet 52 can be held by the seat frame 63. In addition, 81 ... (... represents a plurality. The same applies hereinafter) is a first bracket attached to the lower pipes 62, 62 for fixing the floor step 17 (see FIG. 3) to the lower pipes 62, 62, 82,. Is a second bracket attached to the lower pipes 62, 62 in order to fix the floor step 17 and the under cover 44 (see FIG. 1) to the lower pipes 62, 62.
[0024]
  FIG. 5 is a cross-sectional view showing the front part and the floor step of the vehicle body frame according to the present invention. The second brackets 82 and 82 are attached to the lower pipes 62 and 62 of the vehicle body frame 11, and the second brackets 82 and 82 are attached. The floor step 17 is attached to the upper part, and the side surfaces 44a and 44a of the under cover 44 are attached to the side portions of the second brackets 82 and 82, respectively. Reference numeral 44 b denotes a bottom surface of the under cover 44.
[0025]
  In this way, the under cover 44 is a member formed in a bathtub shape, and forms a sealed space 85 with the floor step 17, and the batteries 18 and 18 are stored in the sealed space 85. It is possible to prevent the batteries 18 and 18 from being exposed.
[0026]
  FIG. 6 is a cross-sectional view showing a battery mounted on an electric vehicle according to the present invention, and an arrow (front) in the figure indicates the front of the vehicle (the same applies hereinafter).
  The battery 18 is formed by stacking a plurality of cylindrical nickel-metal hydride battery cells 18a, and wrapping them in the aforementioned shrink pack 18b. The battery 18 is housed in the battery case 88 and disposed below the floor step 17. To do. In addition, 91 is a winker relay attached to one lower pipe 62 via a bracket 92, and 93... Are attachment portions provided on the floor step 17 in order to attach the floor step 17 to the second bracket 82.
[0027]
  FIG. 7 is a first side view of the power unit according to the present invention, and shows a view of the power unit 22 as viewed from the side opposite to the rear wheel 23 (see FIG. 1).
  The power unit 22 houses the electric motor 100 in the latter half, connects the output shaft 101 of the electric motor 100 to the axle 102 of the rear wheel 23 (see FIG. 1), and controls the electric power supplied to the electric motor 100 in the front half. That is, a power control unit 103 that controls driving of the electric motor 100 and a smoothing capacitor 104 attached to the power control unit 103 are attached.
[0028]
  The power transmission method in the power unit 22 is a reduction type in which the output from the electric motor 100 is transmitted to the rear wheels 23 via a speed reduction mechanism (described later). Further, the power control unit 103 is configured by a switching member such as a power FET (FET: Field Effect Transistor).
[0029]
  Here, 106 is a brake arm constituting a drum brake for braking the rear wheel 23, 107 is an adjusting member attached to the tip of the brake arm 106, 108 is connected to the adjusting member 107 and also connected to a brake lever (not shown). A wire 111 is an outer cable that movably accommodates the wire 108. By gripping the brake lever, the brake arm 106 is swung through the wire 108 and the adjusting member 107, and a brake serving as a rotating shaft of the brake arm 106 is provided. A cam member provided at the tip of the shaft 109 is rotated, and a brake shoe (details will be described later) is pressed against a brake drum (details will be described later) by the cam members, thereby braking the rear wheel 23. The adjustment member 107 is a member that adjusts the initial angle of the brake arm 106.
[0030]
  In the present embodiment, the output shaft 101 of the electric motor 100 is arranged to be offset obliquely upward and rearward of the axle 102. By arranging the output shaft 101 and the axle 102 in this way, the length of the vehicle body in the front-rear direction can be shortened, and the vehicle body can be downsized. Further, the output shaft 101 may be disposed obliquely in front of the axle 102.
[0031]
  8 is a cross-sectional view taken along line 8-8 in FIG. 7. The power unit 22 includes a unit case 121 that houses the electric motor 100, a drum brake device 122 attached to the side surface of the unit case 121, and the drum brake device 122. And the above-described axle 102 attached thereto.
[0032]
  The unit case 121 is divided into two parts including a case main body 125 on the rear wheel 23 side and a case cover 127 attached to the opening side of the case main body 125 with bolts 126 (only one is shown in the drawing). It is a member.
[0033]
  The electric motor 100 includes a stator 131 attached to the case body 125, the output shaft 101 rotatably attached to the unit case 121 via bearings 132 and 132, and a rotor 134 attached to the output shaft 101 by spline coupling. Outer rotor type consisting of Reference numeral 137 denotes a tooth portion formed at the tip of the output shaft 101, and reference numeral 138 denotes a dust seal.
[0034]
  The drum brake device 122 is a device attached to the inner side surface 125a of the case main body 125 with bolts 144..., And a base 146 that rotatably supports the axle 102 with bearings 145 and 145 together with the case main body 125, and the base 146. The above-described brake shaft 109 having a brake arm 106 attached to one end thereof, a cam member (not shown) attached to the other end of the brake shaft 109, and the cam member being pressed by rotation of the cam member The brake shoe 151 opens toward the side, the cup-shaped brake drum 152 that contacts the brake shoe 151 against the inner surface, and the brake arm 106 described above.
[0035]
  The axle 102 is a member formed with a tooth portion 155 that meshes with the tooth portion 137 of the output shaft 101 and a male spline 156 for coupling the rear wheel 23. Reference numeral 157 denotes a dust seal provided between the base 146 and the axle 102.
  The output shaft 101 provided with the tooth portion 137 and the axle 102 provided with the tooth portion 155 are members constituting the speed reduction mechanism 158.
  The rear wheel 23 includes a wheel portion 161 attached to the axle 102 and a tire 162 attached to the outer peripheral portion of the wheel portion 161.
[0036]
  The wheel portion 161 is attached to the above-described brake drum 152 composed of a boss portion 166 and a cup-shaped drum portion 167 that form a female spline 165 coupled to the male spline 156 of the axle 102, and an outer peripheral surface 152 a of the brake drum 152. The disc portion 168 and a rim portion 171 attached to the outer peripheral portion of the disc portion 168. Reference numerals 173 and 174 denote washers and nuts for attaching the rear wheel 23 to the axle 102.
[0037]
  The configuration of the power unit 22 shown in FIG. 8 will be described in more detail.
  The wheel portion 161 is a member configured such that the center side (that is, the drum portion 167 side) protrudes from the center of the rear wheel 23 in the vehicle width direction to the side opposite to the electric motor 100. That is, the boss portion 166 serving as the rotation center portion of the rear wheel 23 is in an offset state.
[0038]
  Moreover, even if a so-called reduction-type power unit 22 is adopted by disposing the reduction mechanism 158 provided between the electric motor 100 and the rear wheel 23 in the wheel portion 161 offset as described above. The amount of projection of the power unit 22 with respect to the rear wheel 23 toward the side of the vehicle body can be reduced. Therefore, since the power unit 22 and the rear wheel 23 which are heavy objects can be disposed at substantially the center in the vehicle width direction, the balance of the center of gravity of the vehicle body can be improved, and the running performance and the like can be improved.
[0039]
  Next, power transmission from the electric motor 100 to the rear wheel 23 will be described.
  A drive current is supplied to the stator 131 under the control of the power control unit 103. The drive current is controlled by, for example, PWM (Pulse Wide Modulation) control.
[0040]
  The PWM control is a method of controlling the rotation speed (and torque) of the electric motor 100 by applying a voltage to the electric motor 100 in a pulse shape and changing the ratio (duty ratio) between the ON and OFF intervals of the pulse.
[0041]
  By the PWM control described above, the rotor 134 is rotated by the rotating magnetic field generated around the stator 131, and the output shaft 101 is rotated accordingly. The power from the output shaft 101 is decelerated via the tooth portion 137 and the tooth portion 155 and transmitted to the axle 102. Thus, the power from the electric motor 100 is decelerated and transmitted to the rear wheel 23.
[0042]
  In the present embodiment, the speed reduction mechanism using the output shaft 101 and the axle 102 is fixed, but the speed reduction ratio is fixed. However, the power from the electric motor 100 is shifted by another transmission to the rear wheel 23. May be transmitted. As such a speed reduction mechanism, for example, a continuously variable transmission may be used.
[0043]
  Furthermore, the electric vehicle according to the present embodiment also has a regenerative charging mechanism. That is, when the electric vehicle 10 is decelerated by applying a drum brake device, a front brake, an engine brake, or the like, the electric motor 100 is driven as a generator, and the rotational force transmitted from the rear wheel 23 to the electric motor 100 during the deceleration is electrically generated. It has a function of converting into energy and storing it in the batteries 18 and 18.
[0044]
  FIG. 9 is a second side view of the power unit according to the present invention, and is a view seen from the rear wheel 23 side.
  The power unit 22 is formed with first heat dissipating fins 181 on the inner side surface 125a of the case body 125, and a rectangular window for exposing the second fins 183 provided on the case 182 of the power control unit 103 to the outside in the front half. A portion 184 is formed, the smoothing capacitor 104 is attached in front of the window portion 184, and a hole portion 186 through which the axle 102 (see FIG. 8) is passed is formed. Reference numeral 188 denotes a capacitor case for housing the smoothing capacitor 104, and reference numeral 191 denotes a cushion lower end mounting portion provided on the unit case 121 for mounting the lower end of the rear cushion unit 24 (see FIG. 1).
[0045]
  A substantially pentagonal member shown by an imaginary line in the drawing is the base 146 of the drum brake device 122 (see FIG. 8), and 193... Is a case main body for attaching the base 146 to the inner side surface 125a of the case main body 125. 125 is a base mounting portion provided at 125.
[0046]
  10 is a cross-sectional view taken along the line 10-10 in FIG. 7, and the power control unit 103 is attached to the inner surface 125b of the case main body 125 of the unit case 121 with bolts 196, and the case 182 of the power control unit 103 is attached to the window of the case main body 125. This shows that the second fins 183... Are exposed to the outside from the portion 184 and are close to the tire 162 of the rear wheel 23. Reference numerals 198 and 198 denote frame attachment portions that are attached to the power unit support member 71 (see FIG. 2) on the vehicle body frame 11 (see FIG. 2) via a swing shaft.
[0047]
  11 is a cross-sectional view taken along the line 11-11 in FIG. 7, and the smoothing capacitor 104 is attached to the front portion of the inner side surface 125a of the case body 125, and the smoothing capacitor 104 is formed on the outer peripheral surface with the third fins 201. It is shown that the capacitor case 188 is housed in the capacitor case 188, and the capacitor case 188 is brought close to the rear wheel 23, specifically the tire 162. The capacitor case 188 is attached to the case body 125 with screws.
[0048]
  Next, the action of cooling the power unit 22 described above will be described.
  FIG. 12 is a first operation diagram showing the cooling of the power unit according to the present invention, and the cooling by the airflow generated by the rotation of the traveling wind and the rear wheel 23 (shown by the imaginary line) will be described.
  When the electric vehicle is running, the driving wind is an arrow.▲ Circle number 1 ▼In order for the rear wheel 23 to rotate as shown by the white arrow and to rotate as indicated by the white arrow, an air flow generated in the direction of rotation of the wheel 23 is added in the vicinity of the rear wheel 23, so that the traveling wind is▲ Circle number 2, Circle number 3 ▼As shown in FIG. 6, the heat flows from the smoothing capacitor 104 through the capacitor case 188 while flowing along the third fin 201 of the capacitor case 188 and moving downward.
[0049]
  Also, the driving wind is an arrow▲ Circle number 4 ▼As shown by the above, since the air flows along the second fins 183 of the power control unit 103 together with the air flow, heat is taken from the power control unit 103.
  Furthermore, the running wind is an arrow▲ Circle number 5 ▼As shown by the arrow, the case body 125 flows in the vicinity of the first fins 181.▲ Circle number 6 ▼As shown by the arrows, the arrows flow along the first fins 181.▲ Circle number 6 ▼Some of the driving wind of▲ Circle number 7 ▼As shown by, it flows around the first fin 181 around the attachment portion of the base.
[0050]
  FIG. 13 is a second action diagram showing cooling of the power unit according to the present invention, and cooling on the electric motor 100 side and the drum brake device 122 side will be described.
  When the electric motor 100 is operated, a lot of heat is generated particularly on the side of the stator 131 including the coil. Further, when the rear wheel 23 is braked by the drum brake device 122 during traveling, heat is generated by friction between the brake shoe 151 and the brake drum 152.
[0051]
  These heats are arrows from the electric motor 100 side.▲ Circle number 8 ▼As shown in FIG. 2, the air flows into the first fins 181 of the case body 125, and the arrow from the drum brake 122 side.▲ Circle number 9 ▼As shown, the brake drum 152 flows from the axle 102 to the base 146 to the first fins 181 of the case main body 125. As a result, heat escapes from the first fins 181 to the atmosphere. Accordingly, the electric motor 100 and the drum brake device 122 can be cooled. Further, since the first fins 181... Are located between the electric motor 100 and the drum brake device 122, heat is transmitted from the drum brake device 122 to the electric motor 100. It can be difficult to communicate.
[0052]
  FIG. 14 is a cross-sectional view showing another embodiment of the cooling structure of the power control unit according to the present invention. The same components as those of the embodiment shown in FIG.
  The power control unit 210 attaches a heat radiating plate 212 to the FET provided in the case 211, and exposes the fourth fins 213 formed on the heat radiating plate 212 to the outside through the case 211. The tire 162 is close to the tire 162.
[0053]
  In this way, by exposing the fourth fins 213 of the heat radiating plate 212 to the outside, the heat generated in the FET can be directly released from the fourth fins 213 of the heat radiating plate 212 to the atmosphere. The controller 210 can be cooled more effectively.
[0054]
  FIG. 15 is a rear side view (partially sectional view) of the electric vehicle according to the present invention. The helmet support member 216 attached to the seat post 21 and the seat frame 63 are used to hang the edge of the helmet 52 having a substantially hemispherical outer surface. The curled charging cord 218 connected to the charging / voltage converting device 25 is accommodated in the hollow portion 217 of the seat post 21, and the upper portion of the opening portion 221 and the helmet 52 that the hollow portion 217 opens to the outside is seated. 27 indicates that it is covered.
[0055]
  The helmet 52 includes an outer shell member 223 and a cushioning material 224 provided in the outer shell member 223. The helmet 52 has an extended edge 52a. The helmet support member 216 and the seat frame 63 described above. Can be hung.
[0056]
  Here, 225 is a plug of the charging cord 218, 226 is a cap fitted to the plug 225, 227 is an edge member attached to the upper end portion of the seat post 21, 228 is a seat hinge for attaching the seat 27 to the seat frame 63 so as to be opened and closed, Reference numeral 231 denotes a seat cushion material, 232 denotes a seat bottom plate, and 233 denotes a tray that detachably attaches to the seat bottom plate 232 to store documents and the like.
[0057]
  As described above, the space under the seat 27 is the article storage space 234 for storing the helmet 52 as an article, and this storage space 234 is an open space that does not have a partition wall that is separated from the outside.
[0058]
  By arranging such an article storage space 234 directly below the seat 27, the helmet 52 does not get wet even if it rains, and it is not necessary to provide special rain avoidance.
[0059]
  Moreover, since the helmet 52 is stored under the seat 27 even though the lower side of the seat 27 of the electric vehicle 10 according to the present embodiment is a bare space, the helmet 52 is at a glance under the seat 27 at first glance. A novel impression that cannot be seen when the vehicle is housed can be given, and the attractiveness of the electric vehicle 10 can be enhanced.
[0060]
  The charging / voltage converting device 25 includes vehicle body side attachment portions 236 and 236 (only one reference numeral 236 is shown) and vehicle body side attachment portions 237 and 237 (only one reference numeral 237 is shown) on the vehicle body frame 11 side. The vehicle body side attaching portions 236 and 236 are attached to the reinforcing member 68, and the vehicle body side attaching members 237 and 237 are attached to the side surface of the intermediate frame 64 so as to be in close contact with the seat post 21. 5 fins 238... Are provided.
[0061]
  Thus, since the charging / voltage converting device 25 is attached to the vehicle body frame 11 in an exposed state, the charging / voltage converting device 25 is made more in comparison with the conventional arrangement in the vehicle body cover. It can be cooled effectively. That is, since the charging / voltage converting device 25 is arranged in the bare space under the sheet 27, the heat generated in the charging / voltage converting device 25 can be released to the atmosphere as it is, and the heat dissipation can be further improved.
[0062]
  Here, 241 and 242 are terminals for connecting the conductive wires 243 and 243 extending from the tail lamp 26, 244 is a lamp mounting portion provided integrally with the tail lamp 26 for mounting the tail lamp 26 to the intermediate frame 64, and 246 is a rear cushion unit 24 ( This is a cushion upper end attaching portion provided on the reinforcing member 68 for attaching the upper end of FIG.
[0063]
  That is, since the charging / voltage conversion device 25 and the tail lamp 26 are provided substantially integrally, the connection distance between the charging / voltage conversion device 25 and the tail lamp 26 can be shortened. In addition, since the charging / voltage conversion device 25 and the tail lamp 26 can be easily covered with the same cover, the manufacturing cost and the like can be reduced when such a cover is provided.
[0064]
  FIG. 16 is an operation diagram when the sheet according to the present invention is opened.
  A seat lock device (not shown) for locking the seat 27 to the seat frame 63 is removed, and the seat 27 is swung upward, that is, the seat 27 is opened. In the present embodiment, the seat 27 is rotatably supported by a seat hinge 228 provided at the rear portion of the seat frame 63.
[0065]
  If the seat 27 is opened in this manner, the helmet 52 can be easily taken out upward, and the charging cord 218 can be easily taken out from the hollow portion 217 of the seat post 21, and the plug 225 of the charging cord 218 can be taken out. The cap 226 can be removed and inserted into the outlet.
  Further, the tray 233 under the sheet 27 can be removed to easily take out documents, manuals, and the like.
[0066]
  17 (a) and 17 (b) are side views showing a modification of the method for storing articles under the seat according to the present invention.
  (A) shows that the net 251 is attached to the seat frame 63, and the articles 252 and 253 are stored in the net 251.
  (B) shows that hooks 256... Are attached to the seat frame 63, for example, a bag 257 is hung on the hooks 256, and the article 258 is stored in the bag 257.
[0067]
  As described above with reference to FIGS. 15 and 16, the present invention firstly relates to the motorcycle 10 (see FIG. 1) in which the seat frame 63 is attached to the seat post 21 and the seat 27 is attached to the seat frame 63. The seat frame 63 extends substantially horizontally from the upper end of the seat post 21, covers the upper part of the seat frame 63 with the seat 27, and holds the article with the seat frame 63. 234 is formed.
[0068]
  Since the upper part of the seat frame 63 is covered with the seat 27 and the article is held by the seat frame 63, the article can be stored directly under the seat 27, and a cover or the like can be provided on the side of the article storage space 234. Even if it is not provided, the stored article does not rain, and a special structure for avoiding the rain of the stored article is unnecessary. In addition to such a structure, since the seat frame 63 and the seat 27 are simply attached to the seat post 21, the number of parts can be reduced and the weight can be reduced.
[0069]
  Further, for example, when the article is a helmet 52, if the helmet 52 is held on the seat frame 63, a novel appearance that cannot be seen when the helmet 52 is housed under the seat 27 at first glance. It is possible to improve the product appeal of the motorcycle 10 by increasing the attractiveness of the product.
  Furthermore, if the seat 27 is made to be openable / closable, the helmet 52 can be easily taken out by opening the seat 27, and the usability when storing the articles can be improved.
[0070]
  Secondly, according to the present invention, the charging / voltage converting device 25 for charging the battery 18 (see FIG. 1) is disposed below the article storage space 234, and the charging / voltage converting device is attached to the seat post 21 via the intermediate frame 64. 25, a charging cord 218 for energizing the charging / voltage converting device 25 is disposed in the seat post 21, and the tip of the charging cord 218 can be taken out from the upper end of the seat post 21.
[0071]
  By arranging the charging / voltage converting device 25 and the charging cord 218 around the seat post 21 and in the dead space formed inside the seat post 21, the space of the electric vehicle 10 can be used effectively.
[0072]
  Thirdly, the present invention is characterized in that the charging / voltage converting device 25 is disposed adjacent to the seat post 21.
  By disposing the charging / voltage converting device 25 adjacent to the seat post 21, the charging cord 218 can be further shortened, and the weight can be reduced.
[0073]
  18A and 18B are explanatory views of the charging / voltage converting apparatus according to the present invention. FIG. 18A is a cross-sectional view taken along the line 18-18 in FIG. 15, and FIG.
  In (a), it is shown that the fifth fins 238... Are provided on the lower surface 25 a of the charging / voltage converting device 25 so as to protrude downward and are arranged on both sides of the intermediate frame 64. Reference numerals 261 and 261 denote cushion rubbers interposed between the intermediate frame 64 and the charging / voltage converting device 25.
[0074]
  In (b), when the air flows in the direction of the arrow, the heat generated in the charging / voltage converting device 25 escapes from the fifth fins 238. Thereby, the temperature rise of the charge / voltage converter 25 can be suppressed.
[0075]
  Note that the under-seat structure of the present invention is not limited to a motorcycle or an electric vehicle, but is provided with a sheet exposed to the outside, such as a rough terrain vehicle, a golf cart, and an industrial machine (agricultural machinery, civil engineering machinery, construction machinery). Applicable.
[0076]
【The invention's effect】
  The present invention exhibits the following effects by the above configuration.
  The under-seat structure of the motorcycle according to claim 1 has a structure in which the seat frame is covered with the seat in a top view and the article is held in an exposed state by the seat frame, so that the article can be stored directly under the seat. In addition, even if a cover or the like is not provided on the side of the article storage space, no rain is applied to the stored article, and a special structure for avoiding rain of the stored article becomes unnecessary. In addition to such a structure, since the seat frame and the seat are simply attached to the seat post, the number of parts can be reduced and the weight can be reduced.
[0077]
  In addition, for example, when the article is a helmet, if the helmet is held in the seat frame, a novel appearance that cannot be seen at first glance when the helmet is stored under the seat can be obtained. Product appeal can be enhanced, and further improvement in the product quality of motorcycles can be achieved.
  Furthermore, if the seat is opened and closed, the helmet can be easily taken out by opening the seat, and the usability when storing articles can be improved.
[0078]
  And even moreIn addition, a charger for charging the battery is disposed in the lower part of the article storage space, a charger is attached to the seat post via a support member, and a charging cord for energizing the charger is disposed in the seat post. Since the front end can be taken out from the upper end of the seat post, the space of the electric vehicle can be used effectively by arranging the charger and the charging cord in the dead space around the seat post and inside the seat post.
[0079]
  Claim 2In the under-seat structure of the motorcycle, since the charger is disposed adjacent to the seat post, the charging cord can be further shortened and the weight can be reduced.
[0080]
  In the under-seat structure of the motorcycle according to claim 3, the battery is disposed below the floor step.
[0081]
  In the under-seat structure for a motorcycle according to a fourth aspect of the present invention, a power unit is attached to the lower part of the seat post so as to freely swing up and down, and the power unit includes a power control unit in the front half and an electric motor in the rear half.
[Brief description of the drawings]
FIG. 1 is a side view of a motorcycle according to the present invention.
FIG. 2 is a side view showing a body frame of an electric vehicle according to the present invention.
FIG. 3 is a plan view of an electric vehicle according to the present invention.
FIG. 4 is a plan view showing a body frame of an electric vehicle according to the present invention.
FIG. 5 is a sectional view showing a front portion and a floor step of a vehicle body frame according to the present invention.
FIG. 6 is a cross-sectional view showing a battery mounted on an electric vehicle according to the present invention.
FIG. 7 is a first side view of a power unit according to the present invention.
8 is a cross-sectional view taken along line 8-8 in FIG.
FIG. 9 is a second side view of the power unit according to the present invention.
10 is a sectional view taken along line 10-10 in FIG.
11 is a sectional view taken along line 11-11 in FIG. 7;
FIG. 12 is a first operation diagram showing cooling of a power unit according to the present invention.
FIG. 13 is a second operation diagram showing cooling of the power unit according to the present invention.
FIG. 14 is a sectional view showing another embodiment of the cooling structure of the power control unit according to the present invention.
FIG. 15 is a rear side view (partial side view) of an electric vehicle according to the present invention.
FIG. 16 is an operation diagram when the sheet according to the present invention is opened.
FIG. 17 is a side view showing a modification of the method for storing articles under the seat according to the present invention.
FIG. 18 is an explanatory diagram of a charging / voltage converting apparatus according to the present invention.
FIG. 19 is a side view showing a structure under a seat of a conventional motorcycle.
[Explanation of symbols]
  10 ... motorcycle (electric vehicle),17 ... Floor step,18 ... battery, 21 ... seat post,22 ... Power unit,25 ... Charger (charging / voltage conversion device), 27 ... Seat, 63 ... Seat frame, 64 ... Support member (intermediate frame),100: Electric motor, 103: Electric power control unit,218: Charging cord, 234: Article storage space.

Claims (4)

In a motorcycle with a seat frame attached to the seat post and a seat attached to this seat frame,
The seat frame is covered with the seat in a top view and has an article holding structure in an exposed state with the seat frame, thereby forming an article storage space below the seat, and a lower part of the article storage space. A charger for charging the battery is disposed, the charger is attached to the seat post via a support member, a charging cord for energizing the charger is disposed in the seat post, and a leading end of the charging cord is disposed on the seat post. motorcycle seat Shimogamae Concrete, characterized in that, made available from the upper end of the. The under-seat structure for a motorcycle according to claim 1 , wherein the charger is disposed adjacent to the seat post. The under-seat structure for a motorcycle according to claim 1, wherein the battery is disposed below the floor step. 2. The under-seat structure for a motorcycle according to claim 1, wherein a power unit is attached to a lower portion of the seat post so as to swing up and down, and the power unit includes a power control unit in a front half and an electric motor in a rear half.

Images