JP6501422B2 - Engine unit of straddle type vehicle - Google Patents

Description

  The present invention relates to an engine unit of a straddle-type vehicle.

  Some straddle-type vehicles, such as motorcycles, include a kick control lever for kick-starting an engine. In this type of straddle-type vehicle, a kick control lever is often attached to an engine unit (see, for example, Patent Document 1).

  In the engine unit of the straddle-type vehicle described in Patent Document 1, the side of the transmission is covered by a transmission cover, and a kick operating lever is attached to a starting shaft that protrudes laterally from the transmission cover. The kick control lever has one end portion of the lever main body coupled to the start shaft, and the other end portion is mounted with a kick pedal so as to be deployable and retractable.

JP, 2011-202548, A

  However, in the engine unit described in Patent Document 1, since the lever main body of the kick operating lever is disposed apart from the vehicle outer surface of the transmission cover, the kick operating lever is shifted even when the kick operating lever is not used. It will project greatly to the vehicle outside of the machine cover. For this reason, in the case of this engine unit, the vehicle width of the saddle-ride type vehicle becomes large, and it is difficult to obtain a sense of unity in appearance.

  Therefore, the present invention is intended to provide an engine unit of a straddle-type vehicle that can narrow the vehicle width and can improve the appearance of the vehicle.

The engine unit of the straddle-type vehicle according to the present invention adopts the following configuration in order to solve the above problems.
That is, the engine unit of the straddle-type vehicle according to the present invention is
An engine unit body (18) having an engine (E) and a transmission (M) and a starting shaft (20) for kick-starting the engine (E);
A transmission cover (19) covering the side of the transmission (M);
In an engine unit of a straddle-type vehicle including a kick operating lever (25) having one end connected to the starting shaft (20), the kick operating lever (25) is connected to the starting shaft (20) And a lever body (29) connected to the connection base (27), and a kick pedal (31) rotatably held at the rear of the lever body (29). The connection base (27) and the lever main body (29) are rotatably connected via a first shaft (28) substantially along the longitudinal direction of the vehicle body, and the lever main body (29) is the first shaft (28) are arranged in the axial center spaced locations of, being rotatable displacement in the vehicle width direction, wherein the outer face of the transmission cover (19), said the kick lever (25) Coupling base (27), said lever body (2 ), And, characterized in that the kick pedal (31) which can be stored in the inner recess (24, 36) is provided.
The recess (24, 36) is a recess recessed inward in the vehicle width direction, and the lever main body (29) is disposed in a region recessed inward in the vehicle width direction of the recess (24, 36). It is good.
In the state where the kick control lever (25) is stored in the recess (24, 36), at least a portion of the upper surface of the lever main body (29) is exposed above the recess (24, 36) You may

  The transmission cover (19) has a substantially flat side-directed surface (22) directed to the side of the vehicle body and an inclined surface (23u) adjacent to the side-directed surface (22) and inclined inward in the vehicle width direction. , And at least a part of the recess (24, 36) may be provided on the inclined surface (23u) of the transmission cover (19).

The lever main body (29) is a first extension (29a) extending upward from the connection base (27) with the kick operating lever (25) stored in the recess (24, 36); And a second extending portion (29b) extending from the first extending portion (29a) to the rear side of the vehicle body, wherein the first shaft (28) is an upper portion of the connection base (27). The connection base (27) and the first extension (29a) may be rotatably connected.

The lever main body (29) is a first extension (29a) extending upward from the connection base (27) with the kick operating lever (25) stored in the recess (24, 36); And a second extending portion (29b) extending from the first extending portion (29a) to the rear side of the vehicle body, and the kick pedal (31) has a direction orthogonal to the first axis (28). The second extension (29b) may be rotatably coupled to the second extension (29b) via a second shaft (30) substantially along the axis.

The kick pedal (31) is housed in a notch (32) provided in the lever main body (29), and a state in which the kick pedal (31) is housed and extension of the lever main body (29) from the notch (32). It is possible to switch to a pedal deployed state projecting in a direction intersecting the direction, and the kick pedal (31) is substantially flush with the adjacent portion of the lever body (29) when the pedal is stored. It may be formed in a shape.

  According to the present invention, since the kick operating lever can be stored in the recess of the transmission cover, it is possible to suppress the kick operating lever from protruding largely outside the transmission cover when not in use. Therefore, when the present invention is adopted, the width of the vehicle can be narrowed, and the appearance of the vehicle can be improved.

1 is a side view of a straddle-type vehicle adopting an engine unit according to an embodiment of the present invention. It is a side view of the engine unit of one embodiment of the present invention corresponding to the II section of FIG. It is a perspective view of an engine unit of one embodiment of the present invention. It is a sectional view which meets an IV-IV line of Drawing 2 of an engine unit of one embodiment of the present invention. It is a perspective view in the storage state of the kick control lever used for the engine unit of one embodiment of the present invention. It is a perspective view in the kick start preparation state of the kick operation lever used for the engine unit of one embodiment of the present invention. It is a top view in the kick start preparation state of the kick operation lever used for the engine unit of one embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described based on the drawings. In the drawings used hereinafter, arrow FR points to the front of the vehicle, arrow UP points to the upper side of the vehicle, and arrow LH points to the left of the vehicle.

FIG. 1 is a left side view of a motorcycle 1 (a straddle-type vehicle) adopting an engine unit 10 according to the present embodiment.
The motorcycle 1 according to the present embodiment is a scooter type motorcycle, and a step floor 3 on which the driver's foot is placed is disposed below the front side of the seat 2. The vehicle body frame F extends from the lower portion of the down frame 5 toward the rear of the vehicle body from a lower portion of the down frame 5 and a head pipe 4 rotatably supporting a steering shaft (not shown), a down frame 5 extending downward from the head pipe 4 The left and right main frames 6L and 6R are provided.

  The left and right main frames 6L and 6R extend from the junction with the down frame 5 along the step floor 3 substantially toward the rear of the vehicle body along the step floor 3 and from the floor frame 7 to the rear obliquely upward And the seat rail portion 8.

  A pair of left and right front forks 13L and 13R is attached to the lower side of the steering shaft held by the head pipe 4. A steering wheel 14 is attached to the top of the steering shaft. A front wheel Wf is rotatably supported at lower ends of the left and right front forks 13L, 13R.

  The rear portions of the floor frame portions 7 of the left and right main frames 6L, 6R are mutually connected by a cross pipe not shown. A front end portion of an engine unit 10 in which the engine E and the transmission M are integrally formed into a block is supported swingably on the cross pipe. A rear wheel Wr is held at a rear end portion of the engine unit 10 so as to transmit power. The motorcycle 1 of the present embodiment adopts a so-called unit swing type rear wheel support structure in which the engine unit 10 and the rear wheel Wr are swingably supported by the vehicle body frame F. A cushion unit 16 is interposed between the rear end of the engine unit 10 and the vehicle body frame F.

FIG. 2 is a side view of the engine unit 10 corresponding to a portion II of FIG. 1, and FIG. 3 is a view of the engine unit 10 as viewed from the lower left rear. 4 is a view showing a cross section taken along the line IV-IV in FIG.
The engine unit 10 has an engine unit main body 18 having an engine E and a transmission M, and a transmission cover 19 that covers the left side of the transmission M of the engine unit main body 18. The engine unit body 18 is provided with a starting shaft 20 for kick-starting the engine E. The start shaft 20 penetrates the transmission cover 19 and protrudes outward in the vehicle width direction. The start shaft 20 can interlock with the crankshaft 21 of the engine E via a gear mechanism (not shown). The start shaft 20 and the crankshaft 21 are connected to be able to transmit power only at the time of kick start. The start shaft 20 is disposed rearward of the crankshaft 21.

  The transmission cover 19 is formed of a metal material such as aluminum or a resin material so as to substantially follow the shape of the engine unit body 18 in a side view, and the peripheral portion is bolted to the engine unit body 18. The transmission cover 19 bulges outward in the vehicle width direction at a central region in the vertical direction. An outer side surface of the bulging portion in the substantially central region is a substantially flat side-directed surface 22 facing the side of the vehicle body. An upper inclined surface 23 u (inclined surface) and a lower inclined surface 23 l which are adjacent to the side directional surface 22 and are inclined inward in the vehicle width direction are provided on the upper and lower sides of the side directional surface 22 of the outer surface of the transmission cover 19 There is.

  The side directional surface 22 of the transmission cover 19 is provided with a first recess 24 having a substantially circular side view. At the center of the bottom wall of the first recess 24, a through hole (not shown) from which the tip of the starting shaft 20 projects is formed. The starting shaft 20 projects into the first recess 24. One end portion of the kick operating lever 25 is connected to the starting shaft 20 projecting into the first recess 24. The kick operating lever 25 is retractable to the outer side of the transmission cover 19. The details of the kick control lever 25 will be described later.

  A main stand 26 for holding the vehicle body in the upright posture when the vehicle is stopped is attached to the lower part of the front side of the engine unit 10 so as to be able to flip up and turn. The main stand 26 has a support leg 26a which stands up when the vehicle is stopped and whose lower end comes in contact with the road, and an operation leg 26b which is provided substantially perpendicularly from the middle part in the extension direction of the support leg 26a. ing. When the vehicle is stopped, the support leg 26a stands up when the vehicle stops, and jumps up so that the support leg 26a faces the rear of the vehicle body when the vehicle travels. The operation leg 26b is a portion that applies a load when the driver operates the main stand 26 with his / her foot, and is in a substantially horizontal posture when the vehicle is stopped, and jumps upward when the vehicle is traveling.

FIG. 5 is a view of the kick control lever 25 in the stored state as viewed from the upper left front side. FIG. 6 similarly shows the kick control lever 25 in the kick start preparation state (deployed state). It is the figure seen from the side. FIG. 7 is a view of the kick control lever 25 in the kick start preparation state (expanded state) as viewed from above.
The kick control lever 25 includes a connection base 27 connected to the start shaft 20, and a lever main body 29 rotatably connected to the connection base 27 via a first shaft 28 extending in the longitudinal direction of the vehicle body. . The lever main body 29 is bent in a substantially L shape from the end of the first extending portion 29a extending upward from the connection base 27 in the stored state and the end of the first extending portion 29a and extends toward the rear of the vehicle body And a second extending portion 29b. A first extension 29 a is connected to the connection base 27 via a first shaft 28. The lever main body 29 is in the stored state (refer to FIGS. 2 to 5) rotated and displaced upward about the first shaft 28, and the kick start preparation rotated and displaced outward about the first shaft 28 in the vehicle width direction It is possible to switch between the states (see FIGS. 6 and 7). The lever main body 29 is disposed at a position separated from the axial center of the first shaft 28 and can be rotationally displaced in the vehicle width direction about the first shaft 28. The first extension 29a of the lever main body 29 is biased by a spring (not shown) in a rotational direction in which the first extension 29a is in the retracted state.

  Further, as shown in FIG. 6, a plurality of recesses 40a, 40b and 40c are provided on the surface (the surface on the side hidden in the second recess 36 in the stored state) facing upward in the kick start preparation state of the lever main body 29. It is formed. The recessed portions 40 a, 40 b and 40 c are formed in a region on the front side of the notch portion 32 of the lever main body 29. The lever main body 29 is reduced in weight by forming the concave portions 40a, 40b, and 40c.

  Here, as shown in FIG. 2, the first extending portion 29 a and the second extending portion 29 b of the lever main body 29 of the kick operating lever 25 are the main stand 26 in a state where the main stand 26 is flipped up to the rear side. Is positioned above the upper end portion 26bE (the upper end portion 26bE of the operation leg 26b).

  Further, at the rear edge portion of the lever main body 29, a notch portion 32 is provided in which a substantially upper half portion of the lever main body 29 (the upper side in the stored state) is cut out. Further, at the rear edge portion of the lever main body 29, a connecting tongue 34 is extended so as to be adjacent to the notch 32. The connecting tongue 34 is approximately half the thickness of the general portion of the lever body 29. The thickness of the connecting tongues 34 and the lever main body 29 means the thickness in the direction of the vehicle width direction when the lever main body 29 is in the stored state. In the connecting tongue 34, the kick pedal 31 can be rotated via the second shaft 30 substantially along the direction orthogonal to the first shaft 28 (the direction toward the vehicle width direction when the lever main body 29 is in the stored state) Is linked to

  A connection tongue 35 similar to the connection tongue 34 of the lever body 29 is formed at the base of the kick pedal 31. The connecting tongues 35 are formed to have a thickness approximately half that of the lever main body 29. The connection tongue 35 of the kick pedal 31 and the connection tongue 34 of the lever main body 29 are connected by the second shaft 30. The portions other than the connecting tongues 35 of the kick pedal 31 have substantially the same thickness as the lever main body 29.

  The kick pedal 31 is configured to be flush with the adjacent exposed outer surface s of the lever main body 29 when the pedal is stored in the notch 32 as shown in FIGS. 2 to 5. There is. The lever main body 29 and the kick pedal 31 are provided with chamfered portions 29m and 31m which are flush with each other in the longitudinal direction of the vehicle when the kick pedal 31 is in the stored state. The chamfered portions 29m and 31m are formed to be substantially parallel to the upper inclined surface 23u of the transmission cover 19 when the lever main body 29 is in the stored state.

  On the other hand, on the upper side portion of the side directional surface 22 of the transmission cover 19 and the upper inclined surface 23 u, a second recess 36 recessed inward in the vehicle width direction is formed substantially along the vehicle longitudinal direction. The second recess 36 is formed continuously to the upper portion of the first recess 24 and is formed from the upper position of the first recess 24 to a predetermined length on the vehicle rear side. The second extending portion 29b of the lever main body 29 is stored in the second recess 36 when the kick operating lever 25 is in the stored state. At this time, the first extending portion 29 a of the lever main body 29 is stored in the first recess 24. Further, the connection base 27 of the kick operating lever 25 and the starting shaft 20 are also stored in the first recess 24.

  As described above, in the engine unit 10 of the present embodiment, the first recess 24 and the second recess 36 are provided continuously on the outer side surface of the transmission cover 19, and these first recess 24 and the second recess 36 are provided. The kick control lever 25 is retractable. Therefore, when the kick operating lever 25 is not used, the kick operating lever 25 can be stored inside the first recess 24 and the second recess 36. Therefore, when the engine unit 10 of the present embodiment is adopted, it is possible to suppress that the kick operating lever 25 largely protrudes outside the transmission cover 19 when not in use. The vehicle width of the vehicle can be narrowed, and the appearance of the side of the transmission cover 19 from the outside of the vehicle can be improved.

  Further, in the engine unit 10 of the present embodiment, the transmission cover 19 is provided with the upper inclined surface 23 u adjacent to the substantially flat side directional surface 22, and a part of the lever main body 29 of the kick operating lever 25 (second A second recess 36 for storing the extension 29b is provided across the upper inclined surface 23u. For this reason, the kick control lever 25 in the stored state can be easily disposed on the inner side in the vehicle width direction.

  Further, in the engine unit 10 of the present embodiment, the connection base 27 of the kick control lever 25 and the lever main body 29 are rotatably connected via the first shaft 28 substantially along the vehicle longitudinal direction, and the lever main body 29 is It is disposed at a position separated from the axial center of the first shaft 28, and can be rotationally displaced in the vehicle width direction about the first shaft 28. Therefore, when the lever main body 29 is stored or pulled out, the lever main body 29 is rotationally displaced about the first shaft 28 in the vehicle width direction, making it easy to store or pull out the lever main body 29 with respect to the second recess 36 It can be carried out. Further, at the time of the kick start of the engine E, the kick start can be easily performed by displacing the lever main body 29 to the outer side in the vehicle width direction.

  Furthermore, in the engine unit 10 of the present embodiment, the connection base 27 of the kick operating lever 25 and the lever main body 29 are rotatably connected via the first shaft 28 and extend upward from the connection base 27 in the storage state A second extending portion 29b extending toward the rear of the vehicle body is connected to an end of the first extending portion 29a of the lever main body 29, and the kick pedal 31 substantially extends in a direction perpendicular to the first axis 28. It is rotatably connected to the second extending portion 29 b via the shaft 30. For this reason, the second extension 29b of the lever main body 29 and the kick pedal 31 of the transmission cover 19 are rotated by displacing the lever main body 29 to the outside in the vehicle width direction and putting the kick pedal 31 into the pedal deployed state. It can be displaced outward in the vehicle width direction. For this reason, it is possible to easily prevent the second extending portion 29b of the lever main body 29 and the kick pedal 31 from interfering with the transmission cover 19 at the time of kick start of the engine while having a simple configuration. Further, at the time of kick start, the second extending portion 29b of the lever main body 29 and the kick pedal 31 can be sufficiently separated from the transmission cover 19 to enhance the kick operability.

  Further, in the engine unit 10 of the present embodiment, the notch 32 is provided in the lever main body 29 of the kick operating lever 25, and the pedal storage state in which the kick pedal 31 is stored in the notch 32. The lever main body 29 is switchably connected to the unfolded pedal deployed state, and is formed to be substantially flush with the adjacent portion of the lever main body 29 in the pedal retracted state. Therefore, since the kick pedal 31 in the pedal storage state is flush with the exposed side of the lever main body 29, the kick pedal 31 and the lever main body 29 are easily integrated in appearance when the lever main body 29 is in the storage state. Become. Therefore, when this configuration is adopted, the appearance of the side portion of the transmission cover 19 from the outside of the vehicle becomes better.

The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, in the above embodiment, although the transmission cover 19 is configured by a single member, the transmission cover may be configured by a plurality of members. Specifically, an auxiliary cover may be attached to the outside of the cover main body directly coupled to the outer side in the vehicle width direction of the unit main body, and the auxiliary cover may be provided with a recess for storing the kick operating lever.
In addition, the saddle-ride type vehicle includes all vehicles on which the driver straddles the vehicle body, and is not only a motorcycle (including a motorbike and a scooter type vehicle), but also a front two-wheel and a single-wheel three-wheel vehicle Etc. are also included.

1 ... Motorcycles (saddle type vehicles)
DESCRIPTION OF SYMBOLS 10 ... Engine unit 18 ... Engine unit main body 19 ... Transmission cover 20 ... Starting shaft 22 ... Side directional surface 23u ... Upper inclined surface (inclined surface)
24 ... 1st recess (recess)
25 ... kick control lever 26 ... main stand 27 ... connection base 28 ... first axis 29 ... lever main body 29a ... first extension 29b ... second extension 30 ... second axis 31 ... kick pedal 32 ... notch 36 ... 2nd recess (recess)
E: Engine M: Transmission

Claims (7)

An engine unit body (18) having an engine (E) and a transmission (M) and a starting shaft (20) for kick-starting the engine (E);
A transmission cover (19) covering the side of the transmission (M);
An engine unit of a straddle-type vehicle comprising a kick operating lever (25) having one end connected to the starting shaft (20);
The kick control lever (25) is
A connection base (27) connected to the starting shaft (20);
A lever body (29) connected to the connection base (27);
A kick pedal (31) rotatably held at the rear of the lever body (29);
Equipped with
The connection base (27) and the lever main body (29) are rotatably connected via a first shaft (28) substantially along the longitudinal direction of the vehicle body,
The lever main body (29) is disposed at a position separated from the axial center of the first shaft (28), and can be rotationally displaced in the vehicle width direction,
The vehicle outer side surface of the transmission cover (19) is a recess in which the connection base (27) of the kick operating lever (25 ), the lever main body (29), and the kick pedal (31) can be stored inside An engine unit for a straddle-type vehicle, characterized in that (24, 36) is provided. The recess (24, 36) is a recess recessed inward in the vehicle width direction,
The engine unit of a saddle-ride type vehicle according to claim 1, characterized in that the lever body (29) is disposed in an area recessed inward in the vehicle width direction of the recess (24, 36). In the state where the kick control lever (25) is stored in the recess (24, 36), at least a part of the upper surface of the lever main body (29) is exposed above the recess (24, 36) saddle type vehicle engine unit according to claim 1 or 2, characterized in that there. The transmission cover (19) has a substantially flat side-directed surface (22) directed to the side of the vehicle body and an inclined surface (23u) adjacent to the side-directed surface (22) and inclined inward in the vehicle width direction. And
The at least one part of the said recessed part (24,36) is provided in the said inclined surface (23u) of the said transmission cover (19), The claim any one of the Claims 1-3 characterized by the above-mentioned. Engine unit for straddle-type vehicles. The lever main body (29) is a first extension (29a) extending upward from the connection base (27) with the kick operating lever (25) stored in the recess (24, 36); And a second extension (29b) extending from the first extension (29a) to the rear side of the vehicle body,
The first shaft (28) rotatably connects the connection base (27) and the first extension (29a) at an upper portion of the connection base (27). The engine unit of the saddle-ride type vehicle according to any one of claims 1 to 4. The lever main body (29) is a first extension (29a) extending upward from the connection base (27) with the kick operating lever (25) stored in the recess (24, 36); And a second extension (29b) extending from the first extension (29a) to the rear side of the vehicle body,
The kick pedal (31) is rotatably connected to the second extension (29b) via a second axis (30) substantially along a direction orthogonal to the first axis (28). The engine unit of a straddle-type vehicle according to any one of claims 1 to 5, characterized by: The kick pedal (31) is housed in a notch (32) provided in the lever main body (29), and a state in which the kick pedal (31) is housed and extension of the lever main body (29) from the notch (32). It is possible to switch to the pedal expanded state that protrudes in the direction intersecting with the direction,
The kick pedal (31) according to any one of claims 1 to 6, wherein the kick pedal (31) is formed to be substantially flush with the adjacent portion of the lever body (29) when the pedal is stored. The engine unit of a straddle-type vehicle according to any one of the preceding claims.

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