Driving device for vehicle running on rough terrain

[Detailed Description of the Invention]

(Field of the Invention) This invention relates to the drive of the irregular place traveling vehicle which was made to shorten the size of the direction of body order. (PRIOR ART) In the irregular place traveling vehicle (what is called a buggy) used for leisure or a sport, While providing a sheet in the body Off 1 Norm order halfway part and attaching an engine to the rear of a car body frame behind this sheet conventionally, It influences at the rear of a car body frame same as the above. - A pair of rear arm is supported pivotably, enabling free up-and-down rocking, a rear wheel is supported movably at the rocking end of this rear arm, and there are some which carried out the interlocking linkage of this rear wheel to the account engine of" 2, and enabled the run of vehicles. By time, it is [ (the problem which an invention tends to solve), and ] with this kind of vehicles, In order to satisfy 7 expected to shorten a snug order size as much as possible, then this, In the above-mentioned composition, when it has the seat back toward whom the sheet inclined [ 1st ] back, using the space of this seat back's back lower part, an engine is stored here and it is possible to shorten a body order size by this. However, since the cylinder of the conventional engine is projected toward the upper part from the crankcase side, even if it is going to store an engine to the space of a seat back's back lower part as mentioned above, the upper part of a cylinder contacts a seat back's rear surface, and there is inconvenience that this storage cannot be performed easily. It is possible to the 2nd to shorten the length of the rear arm in the above-mentioned composition. However, if the length of a rear arm is shortened, when this will carry out up-and-down rocking, the amount of dimensional changes of the wheel base which answers this rocking becomes large, and is not preferred in respect of driving stability. (The object of an invention) In the present invention, it was made paying attention to the above situations. Therefore, it aims at the ability to be made to shorten a body order size, without otherwise producing trouble by allocating rationally each component parts of an irregular place traveling vehicle. (Constitution of an invention) The place by which it is characterized [ of the 1st invention for achieving the above-mentioned object ], In the drive of the irregular place traveling vehicle which provided the sheet which has the seat back who inclined back, and attached the engine to the rear of a car body frame same as the above behind this sheet, The cylinder of the above-mentioned engine is made to project from a crankcase to the cross direction, and it is on the point which allocated this engine in a seat back's back lower part. The place by which it is characterized [ of the 2nd invention ] provides an engine power extraction part in the flank of this engine, In the drive of the irregular place traveling vehicle which supported pivotably the rear arm of one pair of right and left at the rear of the car body frame same as the above, enabling free up-and-down rocking, supported the rear wheel movably at the rocking end of this rear arm, and carried out the interlocking linkage of this rear wheel to the above-mentioned power extraction part, The above-mentioned power extraction part is provided in the front part in an engine flank, and it is on the point of having located the supporting portion of both the rear arm to a car body frame near the power extraction part by side view. (EXAMPLE) Hereinafter, a drawing explains the example of this invention. (The 1st example) Drawing 5 shows the 1st example from Drawing 1. In the figure, l is an irregular place traveling vehicle and figure Nakaya seal Fr shows the front. 2 is a car body frame of these vehicles l, and this car body frame 2 has right-and-left side frame 3.4 prolonged in the direction of order. Left side frame 3 comprises among the above up-and-down frames 3a and 3b of one pair of upper and lower sides, and connection frame 3c which connects a these order halfway part mutually. The above-mentioned right side frames 4 are also the above-mentioned left side frame 3 and the composition, and comprise upper frame 4a, lower frame 4b, and connection frame 4c. While the front end of the above-mentioned right-and-left side frame 3.4 is mutually connected by former cross member 6 and the rears of bottom frames 3b and 4b of right and left are mutually connected by back cross member 7 made from a circular pipe, The above-mentioned bottom frame 3b of right and left and '4b order intermediate parts are mutually connected by middle cross member 8 made from a circular pipe. The above-mentioned car body frame 2 is provided with roll-before and after shape of arch left and established forward and backward par 10.11. Among these, right-and-left each end of pre-roll par lO is welded to the front part of right-and-left upper frames 3a and 4a, On the other hand, right-and-left each end of post-roll par 11 is welded to bracket board 12 which protruded on each rear of bottom frames 3b and 4b of right and left, and the up-and-down halfway part of roll par 11 is welded to each back end of right-and-left upper frames 3a and 4a after this. After-above roll par 11 leans back as it progresses to the upper part, and the up-and-down halfway part and the back end of bottom frames 3b and 4b of right and left are connected by main Sutee 13.13 of one pair of right and left into which the rear makes the shape of Ri. Connection par 14 which connects mutually above-mentioned right-and-left main Sutee's 13.13 up-and-down halfway parts is provided, and the right-and-left halfway part of this connection par 14 and the upper part of post-roll par 11 are connected by subStay 15.15 of one pair of right and left. That is, post-roll par 11 is reinforced by each Stay 13.15, and is firmly connected with the rear of right-and-left side frame 3.4. Right-and-left each end of cross member 6 before the above is projected to the method of the outside of right-and-left side frame 3.4. And front arm 18 is supported pivotably by each of this projection end with pivotable support axis 17, respectively, enabling free up-and-down rocking, and front wheel 19 is supported movably by each of this rocking end, enabling free steering. Buffer 20 is constructed between the rocking end of each above-mentioned front arm 18, and each flank of roll par lO before the above corresponding to this, and this buffer 20 buffers the shock each front wheel 19 is shocked from running surface 21. In the above-mentioned case, front wheel 19 is mostly provided in the position in roll par 10 before the above, and the direction of order. On the other hand, about U character-like bracket 23 protrudes on the rear of lower left frame 3b, and after-above cross member's 7 right end section toward the upper part by front view, respectively, and rear arm 25 is supported pivotably by the projection end of each of this bracket 23 with pivotable support axis 24, respectively, enabling free up-and-down rocking. And back shaft tube 27 prolonged in the cross direction is welded to the rocking end of this right-and-left rear arm 25, and rear wheel 29 is attached to each end of back axle 28 supported movably by shaft tube 27 after this enabling free rotation. Buffer 30 is constructed between after-above shaft tube 27 and the above-mentioned connection bar 14, and this buffer 30 buffers the shock each rear wheel 29 is shocked from running surface 21. In the above-mentioned case, rear wheel 29 is back located rather than after-above roll par 11. 32 is a 4-cycle engine and this engine 32 is stored in space 31 which extends right and left in the shape of a side view triangle surrounded by the rear, post-roll par 11. main Sutee 13, connection bar 14, and subStay 15 of the above-mentioned bottom frames 3b and 4b of right and left. And this engine 32 is supported with bracket 33 which protruded from after-above roll par 11 or main Sutee 13. in this case, the truss in which the rear, post-roll par 11, and main Sutee 13 grade of intensity of the above-mentioned bottom frames 3b and 4b of right and left are high -- since the frame is constituted and the above-mentioned engine 32 is supported by this, support of this engine 32 is made firmly. Drive Chain tin 34 which is a power extraction part is provided in this engine 32, on the other hand, follower cable holder 35 is attached to back axle 28, and transmission chain 36 is almost wound around both these cable holders 34.35. And if the power of engine 32 is told to rear wheel 29 via the above-mentioned transmission chain 36 grade, the run of vehicles l will be attained. 38 is an exhaust air muffler, 39 is a fuel tank, and this fuel tank 39 is supported by after-above roll par 11 with bracket 40. 42 is a brake and this brake 42 comprises disk 43 attached to after-above axle 28, and caliper 44 which is attached to the back shaft tube 27 side, and sandwiches the above-mentioned disk 43 at the time of braking. 45 is a bumper. Between order [ above ] roll pars 10.11, sheet 49 in which crew member 48 sits down is provided. This sheet 49 comprises seat cushion 49a and seat back 49b that integral moulding is done to this and inclines toward back. The space between right-and-left side frames 3.4 from the undersurface order halfway part of this seat cushion 49a to former cross member 6 is closed with floor panel 50 made from sheet metal. And seat cushion 49a is supported by bottom frames 3b and 4b of right and left, and rear end part 50a of floor panel 50 in the state of the above. Seat back 49b is supported by the front of post-roll par 11, and, for this reason, the above-mentioned space 31 will be located in the above-mentioned seat back's 49b back lower part. The foot rest 52.52 of one pair of right and left of the above-mentioned sheet 49 by which the above-mentioned crew member 48 carries leg 48a ahead [ horizontal ] mostly is provided, and each of these foot rest 52 is attached to the upper surface of the above-mentioned floor panel 50. If Dahl 53 is provided in a brake ahead of left foot rest 52 among the above-mentioned foot rest 52.52 and Dahl 53 is broken into this brake, the above-mentioned brake 42 will brake rear wheel 29. If accelerator 54 is provided ahead of foot rest 52 of the right direction and this accelerator 54 is broken in, vehicles l will be accelerated by the operation of engine 32. Shift lever 156 is a switch box 55, and this switch box 56 is supported by bracket vibes 57 which protruded on the outside of upper right frame 4a, and it is protected by this bracket vibes 57. 58 is a battery, this battery 58 is attached to the outside of upper right frame 4a behind the above-mentioned bracket vibes 57, and it is protected by the above-mentioned bracket vibes 57 that this battery 58 contacts an obstacle during a run of vehicles l. In the above-mentioned case, pre-roll par 10 is formed low enough so that both crew member's 48 legs 48a and 48a may be covered from the upper part and a forward-viewing community may become large. On the other hand, the upper end of post-roll par 11 has extended even up rather than crew member's 48 head. As for the cross direction, Ri-like steering shaft 61 is formed for a back ball in Center between the above-mentioned sheet 49 and the right-and-left foot rest 52.52. This steering shaft 61 is supported movably by car body frame 2 as follows. Namely, U character-like steering bracket 62 protrudes toward back by plane view from the right-and-left central part of roll par lO before the above, and steering shaft 61 is supported movably by this projection end, enabling free rotation. And the back end of this steering shaft 61 is countered at crew member 48, steering handle 63 is attached, and, on the other hand, the interlocking linkage of the front end of steering shaft 61 is carried out to the above-mentioned front wheel 19.19 via tie rod 64.64 of one pair of right and left. And if it is made to circle in steering handle 63, each front wheel 19 steers, that is, it has come to be able to perform steering of vehicles l. In the above-mentioned case, steering bracket 62 is located between right-and-left both crew member's 48 legs 48b, and 48b, that is, the upper part of each leg 48b serves as space opened wide toward the outside of a car except for the portion of pre-roll par IO. For this reason, bending operation of leg 48b at the time of treading in of brake pedal 53 and accelerator 54 and getting on and off to vehicles 1 can be easily performed by use of the above-mentioned space. In the above-mentioned composition, it is projected below rather than the undersurface of right-and-left side frame 3.4, the undersurface of the above-mentioned seat cushion 49a having been used as circular by side view. And seating side 49c of seat cushion 49a in the state where crew member 48 was sat down is formed so that it may become lower than each Footrest side 52a of the foot rest 52.52. Rear end part 50a of the above-mentioned floor panel 50 is bent in the shape of post-going up so that the front of the inside under [ above-mentioned ] seat cushion 49a may be protected. therefore, under a run of vehicles l -- the undersurface of the above-mentioned seat cushion 49a -- the convex part of running surface 21 -- [-- when it is going to contact, the above-mentioned rear end part 50a Sliding contacts in a convex part smoothly, and protection of sheet 49 is achieved. In addition, 66 is a center protector, as for this center protector 66, that back end is supported pivotably, enabling the free up-and-down rotation to the upper end of post-roll par 11, and that front end is attached to the upper end of pre-roll par lO with a bolt, enabling free attachment and detachment. And if upper part rotation of this center protector 66 is carried out, crew member 48 getting on and off to vehicles 1 can be performed easily. If lower part rotation of the front end of center protector 66 is carried out and it attaches to pre-roll par 10, this center protector 66 has covered crew member 48 on sheet 49 from the upper part. Drawing 5 explains in more detail about the above-mentioned engine 32. This engine 32 has crankcase 68 and crankshaft 69 prolonged in the direction of order is supported movably in this crankcase 68. And cylinder 70 projects toward the method of right-hand side from this crankcase 68, and the interlocking linkage of piston 71 and the above-mentioned crankshaft 69 in this cylinder 70 is carried out by connecting bar 72. In this case, since that cylinder 70 has projected engine 32 to the cross direction, it serves as oblong shape prolonged in the cross direction with height low as a whole. For this reason, this engine 32 gets into the above-mentioned space 31, and as it is crowded, it is stored. Integral moulding of the power transfer case 74 is carried out to the left part of the above-mentioned crankcase 68, and the inner owner of the gear-type gearbox 75 is carried out into this power transfer case 74. Input axis 76 of this gearbox 75 is prolonged in parallel with crankshaft 69, and this input axis 76 is connected via the above-mentioned crankshaft 69 and clutch 77. On the other hand, output axis 78 of gearbox 75 same as the above is also prolonged in parallel with crankshaft 69 same as the above, drive bevel gear 79 is attached to that front end, and follower bevel gear 80 which gears to this drive bevel gear 79 is supported movably by the front part of the left side part of power transfer case 74. Gear shaft 80a of this follower bevel gear 80 was prolonged in the cross direction, and has projected that left end to the exterior of power transfer case 74, and the above-mentioned drive cable holder 34 is attached to this projection end. In the above-mentioned case, engine 32 is sandwiched by both rear arm 25.25 from right and left, and the supporting portion barrel above-mentioned pivotable support axis 24.24 of rear arms 25 and 25 over car body frame 2 is located on the above-mentioned gear shaft 80a and the same axle. For this reason, the front part of right-and-left rear arm 25.25 will cover the side part of engine 32 containing power extraction part barrel drive cable holder 34 from the method of the outside over the whole direction of that order, that is, right-and-left rear arm 25.25 will protect this engine 32 effectively. And this is very useful for irregular place traveling vehicles, such as a buggy, at the point which prevents damage to engine 32. The above-mentioned pivotable support axis 24.24 may not be on gear shaft 80a and the same axle, and it may establish it near the gear shaft 80a by side view. Although engine 32 and rear wheel 29 were connected by the chain transmission means, they are replaced with this and it may be made to connect them with a drive shaft in the above-mentioned example. (The 2nd example) Drawing 6 and Drawing 7 show the 2nd example of this invention. In a figure, each above-mentioned bracket 23 is attached [ both ] on back cross member 7, before long, left bracket 23 is located in the lower left of engine 32, and right bracket 23 is located down the right end section of engine 32 made into the shape of an upward slant to the right. And pivotable support axis 24 is located near the back lower part of drive cable holder 34 by side view. In addition, 82 is a chain tensioner each and this is attached to left rear arm 25, respectively. Since other composition is the same as that of the 1st above-mentioned example. Numerals are given to a drawing and the explanation is omitted. (EFFECT OF THE INVENTION) According to the 1st invention, since the engine cylinder was made to protrude on the cross direction from a crankcase, this engine serves as oblong shape prolonged in the cross direction with height low as a whole. On the other hand, since the space of the back lower part of the seat back who inclined back is oblong shape, as the above-mentioned engine is inserted in this space, it can make it store it. Therefore, only the part which inserted in the engine as mentioned above can shorten a serious-condition order size. Since the engine power extraction part was provided in the front part in an engine flank and the supporting portion of both the rear arm to a car body frame was located near the power extraction part by side view on the other hand according to the 2nd invention, Compared with the case where this is only being conventionally supported pivotably to the back end of a car body frame, the attaching position will move both the rear arm ahead. Therefore, while predetermined length has been made to keep to both this A film, a moved part to that front can shorten a body order size. In order that according to the above-mentioned composition a rear wheel may also carry out front movement in connection with both the rear arm and these rear arms and a rear wheel may approach an engine, a mass will concentrate and, therefore, it is useful in respect of driving stability. (Following space)

[Brief Description of the Drawings]

Drawing 5 shows the 1st example of this invention from Drawing 1 -- Drawing 1 -- a side view and Drawing 2 -- a top view and Drawing 3 -- in an engine plane sectional view, Drawing 6, and Drawing 7, a front view and Drawing 4 are [ a back part abbreviation figure and Drawing 5 / a partial side view and Drawing 7 of Drawing 6 ] part plans in the 2nd example. l .. Vehicles, 2 .. A car body frame, 19 and a front wheel, 24 .. Pivotable support axis (supporting portion), 25 .. rear arm, 29 .. rear wheel, 31 .. space, and 32 and engine, 34 .. drive cable holder (power extraction part), 48 .. crew member, 49 .. sheet, 49 b .. seat back, 68 .. crankcase, 70 .. cylinder. The Figure