JP2017190069A - Battery attachment structure and motor cycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a battery with a simple structure and improve the attachment workability.SOLUTION: A battery (33) attachment structure includes: a battery case (5) having an opening capable of housing a battery; a battery plate (6) which covers at least part of the opening; seat frames (23) which are provided so as to sandwich the battery case at left and right sides; and a rear suspension bracket (4) which supports one end of a rear suspension (30). The battery case has: a support part (54) which supports the battery on the rear suspension bracket; and an engagement part which engages with the vehicle body frame side. The battery plate has: a pressing part (60) which presses the battery; and fixed parts (61) fixed to the seat frame. The battery plate is fixed to the seat frame to fix the battery case.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a battery mounting structure and a motorcycle.

  As a structure for attaching a battery to a vehicle body frame in a motorcycle, for example, there is a structure described in Patent Document 1. In Patent Document 1, the battery is attached by supporting the battery with a plurality of brackets and fastening the plurality of brackets to predetermined portions of the vehicle body frame.

Japanese Utility Model Publication No. 62-24630

  However, in Patent Document 1, since a plurality of brackets are required, the configuration becomes complicated and the weight increases. Furthermore, there is a problem that the installation work becomes complicated.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a battery mounting structure and a motorcycle capable of mounting a battery with a simple configuration and improving mounting workability.

  A battery mounting structure according to the present invention is a battery mounting structure in a motorcycle, and includes a battery case having an opening capable of accommodating a battery, a battery plate covering at least a part of the opening, and left and right sides of the battery case. A pair of seat frames and a rear suspension bracket that supports one end of the rear suspension, and the battery case engages the vehicle frame side with a support portion that supports the battery on the rear suspension bracket. The battery plate has a holding part that holds the battery and a fixing part fixed to the seat frame, and the battery plate is fixed to the seat frame, A battery case is fixed.

  According to this configuration, since the battery is supported by the rear suspension bracket, the weight of the battery can be received by the rear suspension bracket. For this reason, in order to support a battery, a battery case can be simplified. Also, the battery case can be fixed simply by fixing the battery plate to the seat frame. For this reason, while the structure which fixes a battery case can be abbreviate | omitted, the attachment work of a battery is simplified.

  Further, in the battery mounting structure according to the present invention, the engaging portion includes a first engaging portion that engages a front side of the battery case with the vehicle body frame side, and a rear side of the battery case that corresponds to the vehicle body. It is preferable to have the 2nd engaging part engaged with a flame | frame side. According to this configuration, the front side of the battery case is fixed and the rearward movement of the battery case 5 can be restricted by engaging the first engagement portion with the vehicle body frame side. Similarly, the forward movement of the battery case can be restricted by engaging the second engagement portion on the vehicle body frame side.

  In the battery mounting structure according to the present invention, the battery case is provided above the rear suspension bracket, and the support portion is formed so as to protrude toward the rear suspension bracket, and the support portion. It is preferable that a through-hole penetrating into the battery case is formed at the tip of the battery case. According to this configuration, even if water enters the battery case, the water can be discharged from the through hole of the support portion.

  In the battery mounting structure according to the present invention, it is preferable that the battery plate has a third engagement portion that engages with the seat. According to this configuration, the seat can be fixed by a part of the battery plate, and there is no need to provide a dedicated seat hook. Therefore, the configuration is simplified.

  In addition, the motorcycle according to the present invention preferably includes the battery mounting structure.

  ADVANTAGE OF THE INVENTION According to this invention, while attaching a battery with a simple structure, attachment workability | operativity can be improved.

1 is a side view of a motorcycle to which a battery mounting structure according to an embodiment is applied. It is the perspective view which looked at the periphery structure of the battery which concerns on this Embodiment from upper direction. It is the perspective view which looked at the peripheral structure of the battery which concerns on this Embodiment from the back lower back. It is the perspective view which looked at the peripheral structure of the battery which concerns on this Embodiment from the downward direction. It is a perspective view of the battery case which concerns on this Embodiment. It is a perspective view of the battery case which concerns on this Embodiment. It is a top view of the battery case according to the present embodiment. It is a perspective view of the battery plate which concerns on this Embodiment. It is a longitudinal cross-sectional view of the battery periphery which concerns on this Embodiment. It is a cross-sectional view around the battery according to the present embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following, an example in which the battery mounting structure according to the present invention is applied to an off-road type motorcycle will be described, but the application target is not limited to this and can be changed. For example, the battery mounting structure according to the present invention may be applied to other types of motorcycles, buggy type automobiles, and the like. Regarding the direction, the front of the vehicle is indicated by an arrow FR, the rear of the vehicle is indicated by an arrow RE, the left side of the vehicle is indicated by an arrow L, and the right side of the vehicle is indicated by an arrow R. In the following drawings, a part of the configuration is omitted for convenience of explanation.

  With reference to FIG. 1, a schematic configuration of the motorcycle according to the present embodiment will be described. FIG. 1 is a side view of a motorcycle to which a battery mounting structure according to the present embodiment is applied.

  As shown in FIG. 1, a motorcycle 1 according to the present embodiment is an off-road type motorcycle. The motorcycle 1 is configured by suspending an engine 10 on a body frame 2 made of steel or aluminum alloy. The body frame 2 includes a main frame 21 and a down frame 22 that extend from the head pipe 20, a seat frame 23 that extends rearward from the middle of the main frame 21, and a rear that extends from the lower end of the main frame 21 toward the rear end of the seat frame 23. Frame 24.

  The main frame 21 branches leftward and rightward from the head pipe 20 and extends obliquely downward toward the rear of the vehicle body. The down frame 22 extends downward from the head pipe 20 and then bends in the horizontal direction at the lower part of the vehicle body and extends rearward. The engine 10 is disposed in a space surrounded by the main frame 21 and the down frame 22. The engine 10 is, for example, a water-cooled engine, and a radiator (not shown) as a radiator is disposed on the front surface.

  A front fork 12 is rotatably supported on the head pipe 20 via a steering shaft (not shown). A handle bar 13 is coupled to the upper end of the steering shaft. A front wheel 14 is rotatably supported on the lower portion of the front fork 12. The front wheel 14 is provided with a brake disk 15 constituting a braking device.

  A lower portion of the main frame 21 constitutes a pivot portion 25, and a swing arm 26 is connected to be swingable in the vertical direction. A rear suspension 30 that connects the vehicle body frame 2 and the swing arm 26 is provided above the pivot portion 25. A rear wheel 16 is rotatably supported at the rear portion of the swing arm 26. A driven sprocket 17 is provided on the left side of the rear wheel 16 so that the power of the engine is transmitted to the rear wheel 16 by a chain 18.

  A fuel tank 31 is disposed above the engine 10. A seat 32 is provided behind the fuel tank 31 along the seat frame 23. A battery 33 is disposed between the seat 32 and the rear suspension 30. An air cleaner (not shown) is disposed behind the battery 33. The mounting structure of the battery 33 and the peripheral configuration of the battery 33 will be described later.

  Next, the peripheral configuration of the battery according to the present embodiment will be described with reference to FIGS. 2 to 4 are perspective views showing a battery mounting structure according to the present embodiment. 2 is a perspective view of the peripheral configuration of the battery as viewed from above, FIG. 3 is a perspective view of the peripheral configuration of the battery as viewed from the rear and lower side, and FIG. 4 is a perspective view of the peripheral configuration of the battery as viewed from below. FIG.

  As shown in FIGS. 2 to 4, the battery 33 is accommodated in the battery case 5, and at the rear of the fuel tank 31, the seat 32 (only FIG. 4 is illustrated) and the rear suspension bracket 4 (not illustrated in FIG. 2). Between. The battery 33 has a rectangular parallelepiped shape, and is composed of, for example, a lithium ion storage battery. The battery case 5 has a box shape that can accommodate the battery 33, and the upper side is opened.

  The battery 33 is supported by the rear suspension bracket 4 via the battery case 5. A battery plate 6 is provided above the battery case 5 so as to cover a substantially second half of the opening. The front portion of the battery case 5 is fixed to the fuel tank 31 via a band 7 described later. Details of the battery case 5 and the battery plate 6 will be described later.

  The fuel tank 31 is supported on the upper surfaces of the pair of left and right main frames 21. The front end of the seat frame 23 is connected to each main frame 21 behind the fuel tank 31 by a bolt 23a. The pair of left and right seat frames 23 are disposed so as to sandwich the battery 33 (battery case 5) on the left and right sides, and extend rearward.

  A rear suspension bracket 4 is provided behind the fuel tank 31 so as to connect the pair of left and right main frames 21. The rear suspension bracket 4 includes a connecting pipe 40 that connects the pair of left and right main frames 21, and a pair of left and right protruding pieces 41 that protrude rearward from the connecting pipe 40.

  The pair of left and right projecting pieces 41 are provided at a predetermined interval in the approximate center of the connecting pipe 40 in the left-right direction. The protruding piece 41 is formed in a substantially triangular shape in side view having a thickness in the left-right direction. In particular, the projecting piece 41 is formed so that the vertical width decreases toward the rear. Further, the upper surface of the protruding piece 41 is inclined downward toward the rear.

  In the rear end portion of each protruding piece 41, a through hole 42 penetrating left and right is formed. Between the pair of projecting pieces 41, a tip portion of the rear suspension 30 (see FIG. 10) is disposed. A through hole 30a is also formed at the tip of the rear suspension 30 corresponding to the through hole 42, and a coupling pin 30b (see FIG. 10) is passed through these through holes 42 and 30a, whereby the rear suspension. The tip of 30 is supported by the rear suspension bracket 4.

  An air cleaner (not shown) is disposed behind the battery 33 via an air cleaner bracket 34. The air cleaner bracket 34 is formed of a plate-like body that partitions a space below the seat 32 (a space between the seat frame 23 and the rear frame 24) forward and backward. A seat 32 is provided above the seat frame 23 so as to cover the battery 33 and its peripheral components (see FIGS. 4 and 9).

  The seat 32 is configured by coupling a cushion portion 36 on which an occupant is seated to an upper surface of a resin seat base 35 (see FIGS. 4 and 9). An engaging portion 35 a that engages with the battery plate 6 is formed on the lower surface of the seat base 35. The engaging portion 35a is formed so as to bend toward the front after protruding downward. By removing the seat 32, the battery 33 and its peripheral components can be accessed.

  Next, the detailed configuration of the battery case and the battery plate according to the present embodiment will be described with reference to FIGS. 5 and 6 are perspective views of the battery case according to the present embodiment. Specifically, FIG. 5 is a perspective view of the battery case as viewed obliquely from above, and FIG. 6 is a perspective view of the battery case as viewed from obliquely below. FIG. 7 is a top view of the battery case according to the present embodiment. FIG. 8 is a perspective view of the battery plate according to the present embodiment.

  First, the battery case 5 will be described. As shown in FIGS. 5 to 7, the battery case 5 is injection-molded with a resin material such as plastic. As described above, the battery case 5 has a box shape capable of accommodating the rectangular battery 33 (see FIG. 2), and the upper side is opened. Specifically, the interval between the left and right side walls 50 of the battery case 5 is substantially the same as the left and right width of the battery 33. The distance between the front wall 51 and the rear wall 52 of the battery case 5 is substantially the same as the front-rear width of the battery 33.

  The bottom 53 of the battery case 5 is formed with a pair of recesses 53a that are recessed downward. The pair of recesses 53a have a shape along the upper surface of the protruding piece 41, and are formed side by side corresponding to the protruding piece 41 (see FIG. 3) of the rear suspension bracket 4. A support portion 54 for supporting the battery 33 on the rear suspension bracket 4 is formed by the pair of recesses 53a.

  The support portion 54 has substantially the same left-right width as the thickness of the protruding piece 41, and is formed in a substantially triangular shape in side view having a vertex at the lower end. The support part 54 has the inclined surface 54a which inclines below as it goes back. A through hole 54b penetrating vertically is formed at the lowermost end of the support portion 54 (lower end of the inclined surface 54a). Although the details will be described later, the through hole 54b functions as a drain hole for discharging water that has entered the battery case 5 to the outside.

  A hook-shaped engaging portion 51 a is formed at the approximate center of the front wall 51 of the battery case 5. The engaging part 51a protrudes forward from the front wall 51 of the battery case 5 and has a shape bent downward. A plate-like engagement portion 52 a is formed on the rear wall 52 of the battery case 5. The engaging portion 52a extends rearward from the rear wall 52 of the battery case 5 and has a tip bent downward. The engaging portion 52 a is a plate-like body having substantially the same width as the left-right width (interval between the left and right side walls 50) of the battery case 5, extends substantially horizontally along the left-right direction, and engages with the air cleaner bracket 34.

  On the left and right side walls 50 of the battery case 5, hook portions 55 that are hooked on the seat frame 23 are formed. The hook 55 extends toward the vehicle outer side so as to cover the upper surface of the seat frame 23. Above the hook portion 55, through holes 55a and 55b are formed side by side. The front through hole 55a functions as a hole for avoiding the bolt 23a that connects the main frame 21 and the seat frame 23 (both see FIG. 2). The rear through-hole 55b functions as an access hole when a battery plate 6 described later is attached to the seat frame 23 while avoiding the battery case 5.

  Next, the battery plate 6 will be described. As shown in FIG. 8, the battery plate 6 covers a part of the opening of the battery case 5 and is formed, for example, by bending a metal plate. Specifically, the battery plate 6 includes a pressing portion 60 that holds the upper surface of the battery 33 and a fixing portion 61 that is fixed to the seat frame 23.

  The pressing portion 60 has a rectangular shape in a top view that is long in the left-right direction. Specifically, the front-rear width of the holding portion 60 is approximately half the front-rear width of the battery case 5 (battery 33), and holds the upper portion of the rear half of the battery. Moreover, the left-right width of the holding | maintenance part 60 has the magnitude | size substantially the same as the left-right width of the battery case 5 (battery 33). A plurality of lightening holes 60a are formed on the upper surface of the pressing portion 60 for weight reduction.

  The fixing portion 61 has a substantially L-shape in front view that extends downward from the left and right ends of the pressing portion 60 and then extends outward in the horizontal direction. The portions extending downward from the left and right ends of the pressing portion 60 function as walls that restrict the left and right positions of the battery case 5. In the horizontal portion of the fixed portion 61, a through hole 61a penetrating vertically is formed. Although details will be described later, the battery plate 6 is fixed to the seat frame 23 by inserting a bolt 61 b (see FIG. 2) through the through hole 61 a and fastening the bolt 61 b to the seat frame 23.

  Further, an engaging portion 60 b that engages with the sheet 32 is formed at the rear edge portion of the pressing portion 60. The engaging portion 60b has a step shape that is bent downward from the rear edge portion of the pressing portion 60 and then bent horizontally toward the rear. Although details will be described later, the engaging portion 60b functions as a seat hook for fixing the seat 32 to the vehicle.

  Next, a battery mounting structure according to the present embodiment will be described with reference to FIGS. 9 and 10. FIG. 9 is a longitudinal sectional view around the battery according to the present embodiment. FIG. 10 is a cross-sectional view of the periphery of the battery according to the present embodiment. Specifically, FIG. 9 is a cross-sectional view of the periphery of the battery when the battery case of FIG. 7 is cut along the line AA. FIG. 10 is a cross-sectional view of the periphery of the battery when the battery case of FIG. 7 is cut along the line BB.

  As shown in FIGS. 9 and 10, the battery 33 is disposed between the fuel tank 31 and an air cleaner (not shown) in the front-rear direction while being accommodated in the battery case 5. In this way, mass concentration can be achieved by placing the battery 33 close to the engine 10 (see FIG. 1) and in the center of the vehicle. As a result, the driving performance of the motorcycle 1 (see FIG. 1) is improved. Further, since the battery 33 is accommodated in the battery case 5, the battery 33 can be prevented from being exposed to the outside alone, and the battery 33 can be protected from mud and water.

  As described above, by using the lithium ion battery 33, the outer dimensions of the battery 33 can be reduced, and the battery case 5 can also be reduced in size according to the shape of the battery 33. Yes. For this reason, the battery 33 can be disposed below the seat 32 in a limited space between the fuel tank 31 and the air cleaner. Therefore, it is not necessary to dent the fuel tank 31 to secure the arrangement space for the battery 33, and the capacity of the fuel tank 31 is not sacrificed.

  Further, as described above, the battery 33 is supported by the rear suspension bracket 4 via the battery case 5. Specifically, the battery case 5 (battery 33) is supported by the rear suspension bracket 4 by the inclined surface 54 a of the support portion 54 of the battery case 5 coming into contact with the upper surface of the protruding piece 41. Thus, by using the rear suspension bracket 4 not only for the original purpose but also as a bracket for supporting the battery 33, it is not necessary to provide a dedicated bracket for the battery. As a result, the configuration for attaching the battery 33 can be simplified.

  Furthermore, since the rear suspension bracket 4 is formed integrally with the vehicle body frame 2 (main frame 21), it has a relatively high strength. Therefore, the rear suspension bracket 4 can handle most of the weight of the heavy battery 33. As a result, the strength required for the battery case 5 that houses the battery 33 can be reduced. Therefore, the battery case 5 can be formed as a resin molded product, so that the degree of freedom in design can be improved according to the shape of the battery 33 and the weight can be reduced.

  Further, the support portion 54 is provided corresponding to the protruding piece 41, and a gap is provided between the pair of support portions 54. Therefore, a space for attaching the rear suspension 30 can be ensured, and the attachment workability of the rear suspension 30 can be prevented from being impaired. Further, the inclined surface 54a of the support portion 54 abuts on the upper surface of the protruding piece 41, so that the battery 33 and the battery case 5 can be prevented from moving forward.

  Moreover, since the recessed part 53a is formed in the bottom part 53 of the battery case 5, even if water infiltrates into the battery case 5, water is collected in the recessed part 53a. Therefore, the battery 33 is not affected. In particular, the bottom surface of the concave portion 53a is inclined downward (the inclined surface 54a of the support portion 54), and a through hole 54b is formed at the lower end of the concave portion 53a. For this reason, the water collected in the battery case 5 (recess 53a) can be discharged outside through the through hole 54b.

  The front side of the battery case 5 is fixed to the fuel tank 31 via the band 7. Specifically, the band 7 is configured by attaching polygonal rings 71 and 72 to front and rear ends of a rectangular rubber band 70. The ring 71 on one end side (rear side) is hooked on the engaging portion 51 a of the battery case 5, while the ring 72 on the other end side (front side) is hooked on the engaging portion 31 a provided on the rear end of the fuel tank 31. Thereby, the front side of the battery case 5 is fixed, and the rearward movement of the battery case 5 is restricted.

  An air cleaner bracket 34 is engaged with the rear side of the battery case 5. Specifically, the upper end portion of the air cleaner bracket 34 is hooked on the engaging portion 52a. Thereby, the movement to the front of the battery case 5 is controlled. Further, the engaging portion 52a extends to the left and right, and the engaging portion 52a and the upper end portion of the air cleaner bracket 34 overlap in the front-rear direction, so that a gap between the battery case 5 and the air cleaner bracket 34 is filled. Thereby, it can prevent that water, dust, etc. permeate into the battery case 5 side.

  The battery plate 6 is placed so as to cover the upper part of the battery case 5. At this time, the left and right fixing portions 61 are accommodated in the through holes 55 b of the battery case 5. Then, a bolt 61b (see FIG. 2) is inserted into the through hole 61a of the battery plate 6 from above the fixing portion 61 and fastened to the seat frame 23, whereby the battery plate 6 is fixed to the seat frame 23. As a result, the battery case 5 is pressed downward by the battery plate 6 (pressing portion 60). Therefore, it is possible to restrict the battery case 5 from moving up and down. Further, the battery 33 can be prevented from jumping out of the battery case 5.

  Thus, the battery case 5 can also be fixed simply by fixing the battery plate 6 to the seat frame 23. Therefore, it is not necessary to screw the battery case 5 alone to the seat frame 23 or the like, and the mounting work of the battery 33 is simplified. Further, the battery case 5 can be removed simply by removing the battery plate 6, and the removal work is simplified.

  A seat 32 is provided to cover the seat frame 23 and the battery 33. The front side of the seat 32 is supported on the upper surface of the fuel tank 31, and the intermediate portion of the seat 32 is supported on the seat frame 23 (see FIG. 4). In particular, on the rear side of the seat 32, the engaging portion 35a of the seat base 35 and the engaging portion 60b of the battery plate 6 are engaged.

  Specifically, the engaging portion 35 a and the engaging portion 60 b overlap each other, the upper side is the engaging portion 60 b of the battery plate 6, and the lower side is the engaging portion 35 a of the seat base 35. Thus, a part (engagement part 60b) of the battery plate 6 can be utilized as a seat hook for fixing the seat 32. Therefore, one seat hook can be reduced and the configuration is simplified.

  Further, as described above, the battery plate 6 is pressed downward by being fixed to the seat frame 23 with the bolts 23a. For this reason, the seat 32 (the seat base 35) is pressed downward via the engaging portion 60b of the battery plate 6. As a result, the sheet 32 can be prevented from floating upward.

  As described above, in the present embodiment, since the battery 33 is supported by the rear suspension bracket 4, the weight of the battery 33 can be received by the rear suspension bracket 4. For this reason, in order to support the battery 33, the battery case 5 can be simplified. Further, the battery case 5 can also be fixed simply by fixing the battery plate 6 to the seat frame 23. For this reason, the structure for fixing the battery case 5 can be omitted, and the mounting work of the battery 33 is simplified.

  In addition, this invention is not limited to the said embodiment, It can change and implement variously. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited to this, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  For example, in the above-described embodiment, the battery case 5 is formed of a resin material. However, the present invention is not limited to this configuration. The battery case 5 may be formed of other materials.

  In the above-described embodiment, the battery case 5 is fixed by fixing the battery plate 6 to the seat frame 23. However, the present invention is not limited to this configuration. The battery case 5 may be directly fixed to the seat frame 23 without using the battery plate 6.

  In the above-described embodiment, the battery 33 is composed of a lithium ion battery, but is not limited to this configuration. The battery 33 may be composed of other types of storage batteries such as lead storage batteries.

  In the above-described embodiment, the battery plate 6 covers a part (substantially the latter half) of the opening of the battery case 5, but is not limited to this configuration. The battery plate 6 may be configured to cover all the openings of the battery case 5.

  In the above embodiment, the front side of the battery case 5 is engaged with the fuel tank 31 and the rear side of the battery case 5 is engaged with the air cleaner bracket 34. However, the present invention is not limited to this configuration. The engaging portions 51a and 52a may be directly engaged with the vehicle body frame 2 (seat frame 23).

  As described above, the present invention has an effect that the battery can be attached with a simple configuration and the workability of the attachment can be improved, and is particularly useful for a battery attachment structure and a motorcycle.

DESCRIPTION OF SYMBOLS 1 Motorcycle 23 Seat frame 30 Rear suspension 31 Fuel tank 32 Seat 33 Battery 35a Engagement part (3rd engagement part)
4 Rear suspension bracket 5 Battery case 51a Engagement part (first engagement part)
52a Engagement part (second engagement part)
54 support part 54b through hole 6 battery plate 60 holding part 61 fixing part

Claims (5)

A battery mounting structure for a motorcycle,
A battery case having an opening capable of accommodating a battery;
A battery plate covering at least a part of the opening;
A pair of seat frames disposed on the left and right of the battery case;
A rear suspension bracket for supporting one end of the rear suspension;
The battery case has a support portion that supports the battery on the rear suspension bracket, and an engagement portion that engages with the vehicle body frame side,
The battery plate has a holding part for holding the battery, and a fixing part fixed to the seat frame,
The battery mounting structure, wherein the battery case is fixed by fixing the battery plate to the seat frame.   The engagement portion includes a first engagement portion that engages the front side of the battery case with the vehicle body frame side, and a second engagement portion that engages the rear side of the battery case with the vehicle body frame side. The battery mounting structure according to claim 1, further comprising: The battery case is provided above the rear suspension bracket,
The support portion is formed to protrude toward the rear suspension bracket,
The battery mounting structure according to claim 1, wherein a through-hole penetrating into the battery case is formed at a tip of the support portion.   The battery mounting structure according to any one of claims 1 to 3, wherein the battery plate has a third engaging portion that engages with a seat.   A motorcycle comprising the battery mounting structure according to any one of claims 1 to 4.

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