JP2010095109A - Multipurpose vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a multipurpose vehicle superior in the loading work efficiency of a cargo, by loading the cargo in a loading space without highly lifting the cargo, since the ground height of the loading space cannot be lowered. <P>SOLUTION: The multipurpose vehicle 1 includes a traveling machine body 2 supported on front-rear four wheels 3 and 4, an engine 5 mounted on the traveling machine body 2, a transmission case 7 for transmitting the rotation of the engine 5 to at least both right-left rear wheels 4, a maneuvering steering wheel 26 and a driver's seat 34, and the loading space 52 arranged in the rear of the driver's seat 34. Both right-left movable rails 54 and a connecting bar 67 vertically rotatable with the rear side as the rotational center with a hydraulic cylinder 56 for a dump truck, are arranged on an engine room 8 arranged in a rear part of the traveling machine body 2, and the loading space 52 is longitudinally movably arranged on both right-left movable rails 54. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a multipurpose vehicle such as a pickup used for off-road, more specifically, front wheels and rear wheels are arranged on the left and right sides of a traveling machine body, and an engine, a transmission case, a loading platform, and the like are mounted on the traveling machine body. It relates to multipurpose vehicles.

  In general, in a multi-purpose vehicle, power from an engine mounted on a traveling machine body is transmitted to a transmission case, and transmission power that is appropriately shifted in the transmission case is output to at least one of the front wheels and the rear wheels. The vehicle is configured to travel forward and backward. And it is comprised so that the steering angle of the left and right front wheels may be changed (the steering direction of the front wheels is moved to the left and right) by the operation of the steering handle arranged in the driving unit of the traveling machine body.

In this type of multi-purpose vehicle, an upward opening box-type cargo bed can be mounted on the body frame located behind the driver, and the cargo bed can be tilted backward by lifting the front of the cargo bed with a hydraulic cylinder for dumping. There exists what was comprised in this way (for example, refer patent document 1).
JP 2004-255963 A

  However, the conventional multi-purpose vehicle has a configuration in which the front part of the loading platform is lifted by the dump hydraulic cylinder and the loading platform is inclined rearward, and the ground height of the loading platform cannot be lowered. From the point of view of loading workability, there was room for improvement.

  Accordingly, the present invention aims to provide a multipurpose vehicle that solves the above-mentioned problems.

  In order to achieve the object, the invention according to claim 1 transmits the rotation of the engine to a traveling machine body supported by front and rear four wheels, an engine mounted on the traveling machine body, and at least the left and right rear wheels. A multi-purpose vehicle comprising a mission case, a steering handle and a driver seat, and a loading platform arranged behind the driver seat, on the engine room arranged at the rear of the traveling aircraft body, with a dump mechanism A dump frame capable of rotating up and down around the rear side is provided, and the loading platform is provided on the dump frame so as to be movable back and forth.

  According to a second aspect of the present invention, in the multipurpose vehicle according to the first aspect of the present invention, the multipurpose vehicle is provided with a locking means for adjusting the front-rear position of the loading platform with respect to the dump frame.

  According to a third aspect of the present invention, in the multipurpose vehicle according to the second aspect, the locking means is provided on the cargo bed side, and is interlocked and connected to a lock operating tool located on the side of the cargo bed. The lock means is configured to be engaged with and disengaged from an engagement portion formed on the dump frame by operation of an operation tool.

  According to the present invention, a dump frame that can be turned up and down around the rear side by a dump mechanism is provided on an engine room disposed at the rear of the traveling machine body, and the loading platform includes the dump frame. Since the loading platform 52 can be adjusted in stages, the loading platform 52 can be rotated up and down around the rear side at any of the front and rear positions (rear by the dump mechanism). Can tilt).

  For this reason, when the loading platform at the rearmost position is turned upward to form a dumping posture, the height of the loading platform to the ground is simply lowered so that the cargo is closer to the ground than the conventional dump loading platform structure. Can be dropped. Therefore, it is possible to prevent the luggage from being damaged by the impact at the time of dropping. For example, it is possible to prevent a bale binding twain or the like from being cut. In addition, when dropping granular cargo such as earth and sand stacked from the loading platform, the scattering range of the granular cargo can be made narrower than before. For example, it is possible to reduce the generation of dust in a wide range due to the fall of earth and sand.

  If the loading platform in the rearmost position is turned upward to make the dump posture and the height of the loading platform can be easily lowered, from the opposite view, it is closer to the ground than the conventional dump loading platform structure This means that the load can be loaded onto the loading platform at the position. Therefore, it is possible to easily load the luggage onto the loading platform without lifting the luggage high, and the workability of loading the luggage can be improved.

  According to the invention of claim 2, since the lock means for adjusting the front-rear position of the loading platform with respect to the dump frame is provided, when the loading platform is rotated up and down around the rear side (in the dump mechanism) When tilting backward, there is an effect that the displacement of the loading platform can be surely prevented.

  According to a third aspect of the present invention, the lock means is provided on the cargo bed side, and is interlocked with a lock operation tool positioned on the side of the cargo bed, and the lock means is operated by the operation of the lock operation tool. Since the means is configured to be engaged with and disengaged from the engaging portion formed in the dump frame, there is an advantage that the loading platform can be easily locked (position fixed) and unlocked.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments embodying the present invention will be described below with reference to drawings (FIGS. 1 to 12) applied to a utility vehicle (hereinafter referred to as UTV) as a multipurpose vehicle.

  As shown in FIGS. 1 and 2, the traveling machine body 2 of the UTV 1 is supported by a pair of left and right front wheels 3 as steering wheels and a pair of left and right rear wheels 4 as traveling wheels. An engine 5 as a power source is mounted on the rear side of the traveling machine body 2. The UTV 1 is configured to run forward and backward by rotating both the rear wheels 4 and the front wheels 3 with the engine 5.

  The traveling machine body 2 includes a bottom frame plate 6a supporting a substantially central bottom portion, a pair of left and right front frames 6b protruding forward from the bottom frame plate 6a, a pair of left and right rear frames 6c protruding backward from the bottom frame plate 6a, and the like. A vehicle body frame 6 is provided. A sealed engine room 8 is mounted on the rear side of the vehicle body frame frame 6 (on the bottom frame plate 6a and the rear frame 6c).

  Housed in the engine room 8 is an engine 5 and a transmission case 7 with a hydraulic continuously variable transmission for appropriately shifting the power from the engine 5 and transmitting it to both the rear wheels 4 and the front wheels 3. . The engine 5 and the transmission case 7 of the embodiment are located in front of a rear differential case 48 (details will be described later) disposed at the rear of the vehicle body frame 6 and are connected in series in the front and rear in the engine room 8. It is arranged in the installed state. The engine 5 and the transmission case 7 are supported in a vibration-proof manner integrally with the vehicle body frame 6 via a vibration-proof rubber body (not shown).

  The engine room 8 is formed in a substantially T shape in plan view by a left and right longitudinal front box portion 8a and a front and rear longitudinal rear box portion 8b. Compared to the left and right width dimension Wb of the rear box portion 8b, The left-right width dimension Wf of the box portion 8a is larger (see FIG. 4). In this case, the engine 5 is located in the rear box portion 8b, and the mission case 7 is located in the front box portion 8a. A rear cowl 9 that covers the rear wheel 4 from above is integrally provided on both left and right sides of the rear box portion 8b so as to protrude outward in the left-right direction.

  An air cleaner 10 for filtering intake air to the engine 5 is disposed on the left and right sides of the front box portion 8a with the mission case 7 interposed therebetween, and on the other side, a fuel tank that supplies fuel to the engine 5 11 is arranged. The air cleaner 10 is connected to an intake manifold 13 of the engine 5 via an intake duct 12.

  A radiator 14 for cooling the coolant of the engine 5 is attached to the rear surface portion of the rear box portion 8b. The rear side of the radiator 14 is exposed outside the engine room 8. An exhaust muffler 15 for reducing exhaust noise of the engine 5 is disposed behind the radiator 14. The exhaust muffler 15 is supported by the rear upper frame 16 supported by the rear frame 6c constituting the vehicle body frame 6, and is connected to the exhaust manifold 18 of the engine 5 via the exhaust duct 17 penetrating the rear box portion 8b. It is connected. Therefore, the radiator 14 and the exhaust muffler 15 are located behind the engine room 8 and below a loading platform 52 described later.

  Inside the engine room 8, the outside air for cooling the engine 5 and the transmission case 7 flows rearward. That is, the outside air introduction port 19 for taking in outside air in the engine room 8 is formed in the bottom face of the engine room 8 (the front box part 8a and the rear box part 8b) (refer FIG. 3). In the embodiment, the bottom frame plate 6a of the vehicle body frame 6 constitutes the bottom surface of the front box portion 8a, and the bottom cover plate 6d supported by the left and right rear frames 6c constitutes the bottom surface of the rear box portion 8b. ing. The bottom frame plate 6a and the bottom cover plate 6d are formed with a plurality of slit-like through-holes penetrating in the vertical direction so as to be arranged at appropriate intervals in the front-rear direction. It is 19. A cooling electric fan 20 is disposed on the front side of the radiator 14, and a dustproof net 20 a is stretched on the front side of the cooling electric fan 20.

  Therefore, when the cooling electric fan 20 rotates, the air in the engine room 8 flows from the bottom to the rear and the pressure decreases, thereby causing a difference in the pressure inside and outside the engine room 8. It is captured. The engine 5, the mission case 7, and the radiator 14 are cooled by the taken-in outside air. Outside air is also introduced into the air cleaner 10. The air warmed through the engine room 8 is discharged out of the engine room 8 from the radiator 14 at the rear of the engine room 8. Note that various shapes such as a small-diameter circular shape, a triangular shape, or a quadrangular shape can be adopted as the shape of the through hole.

  On the other hand, a battery 22 for supplying electric power at the time of starting the engine 5 or the like is disposed in a bonnet 21 that covers the front upper portion of the traveling machine body 2. A pair of left and right headlamps 23 that illuminate the front of the traveling machine body 2 are attached to the front portion of the bonnet 21. On both the left and right sides of the bonnet 21 are attached direction indicator lamps 24 for indicating the intention of turning left or right. A steering column 25 having a round steering handle 26 is provided above the rear portion of the bonnet 21.

  A bottom frame plate 6 c constituting the vehicle body frame 6 is provided with a lops frame 27 that partitions the cabin 28 (control section) of the traveling machine body 2. The lops frame 27 of the embodiment includes a pair of left and right frame pipes 27a and a horizontal beam pipe 27b that connects the upper sides of the left and right frame pipes 27a. The rear side of each frame pipe 27a protrudes rearward so as to partially overlap a side surface of a loading platform 52, which will be described later in side view, and the cabin space (boarding space) is widened.

  The steering column 25 provided on the upper side of the rear portion of the bonnet 21 protrudes into a cabin 28 surrounded by a lops frame 27. In the embodiment, a steering handle 26 for steering the left and right front wheels 3 is arranged on the upper left side of the steering column 25. On the left side of the steering column 26 in the steering column 25, a direction indication operation lever 29 for blinking each direction indicator lamp 24 is provided.

  On the right side of the steering handle 26, a transmission operation lever 30 for switching operation of a transmission gear mechanism (not shown) in the mission case 7 is provided. On the left side of the steering column 25 with respect to the direction indicating operation lever 29, there is provided a loading platform operating lever 31 for performing a vertical rotation operation (dump operation) of a loading platform 52 described later.

  Below the steering column 25, a brake pedal 79 for operating the left and right rear wheel brake mechanisms (not shown), an engine speed change, and a trunnion arm (not shown) of a hydraulic continuously variable transmission are operated. An accelerator pedal 80 for appropriately changing the vehicle speed is arranged.

  As shown in FIGS. 1 and 2, the front box portion 8 a of the engine room 8 is located in the cabin 28 surrounded by the lops frame 27 on the rear side of the steering column 25. A horizontally long tray body 32 having a plurality of article storage portions 33 (see FIG. 5) opened upward is detachably attached on the front box portion 8a. In the embodiment, a driver's seat 34 on which three persons can sit is provided. Accordingly, the front box portion 8 a of the engine room 8 also functions as a seat support base that supports the driver seat 34.

  The driver seat 34 includes a seat body 35 and a backrest body 36. The seat body 35 is divided into a plurality of left and right. The embodiment is divided into a driver's seat 35 located on the left side and a passenger's (two-seater) seat 35 located on the center and right side. The driver's seat 35 covers the left-side article storage portion 33 in the tray body 32. The passenger's seat 35 covers the two article storage portions 33 at the center and the right side of the tray body 32.

  The backrest body 36 is also divided into a plurality of left and right. In the embodiment, the driver's backrest body 36 located on the left side and the passenger's (two-seat) backrest body 36 located on the center and the right side are divided so as to correspond to the seat body 35 described above. Yes. Each backrest body 36 is configured such that the angle of the backrest body 36 can be adjusted in a plurality of steps or in a stepless manner about the lateral axis 38 independently of the corresponding seat body 35. In particular, the passenger's backrest body 36 is configured to be able to be tilted forward so that the front surface thereof abuts against the seat body.

  Each seat 35 is configured to be able to flip up and rotate independently around a lateral support shaft 37 on the rear side so as to open and close the upward opening of the article accommodating portion 33 in the tray body 32. That is, each seat 35 functions as a lid for the article storage section 33, and the article storage section 33 of the tray body 32 is opened by turning each seat 35 up and turning. Each seat 35 may be configured to be detachable from the tray body 32.

  On the back surface of the passenger's backrest body 36 (other than for the driver), an accommodation recess 39 for accommodating an article (load) is formed in a rearward opening shape. Therefore, when the passenger's backrest 36 is tilted forward, the accommodation recess 39 opens upward (see FIG. 6), and the driver can easily place an article (load) in the accommodation recess 39. (The accommodation recess 39 is in a convenient state).

  Since the tray body 32 is detachably mounted on the front box portion 8a, the driver's seat 34 can be provided if the upper surface of the front box portion 8a is opened or detachable. By removing the tray body 32, the transmission case 7 in the front box portion 8a can be exposed. When such a configuration is adopted, the maintainability of the mission case 7 can be improved.

  As shown in FIGS. 1 and 2, the left and right front wheels 3 are supported by the front frame 6 b of the vehicle body frame 6 via the independent suspension mechanism 40. The power of the engine 5 is transmitted from the front wheel speed change output shaft (not shown) of the transmission case 7 via the front wheel propulsion shaft 41 with a universal joint penetrating the front surface of the front box portion 8a. Is transmitted to the front differential case 42 attached. And as a result of the rotational power being transmitted to the left and right front wheels 3 via the front wheel drive shaft 43 projecting outwardly from the left and right sides of the front differential case 42, the left and right front wheels 3 are driven to rotate. Become.

  A hydraulic power steering unit 44 is rotatably disposed at the front portion of the traveling machine body 2 so as to move the left and right end portions up and down. A knuckle arm 46 is connected to the tip of a piston rod 45 protruding outward from the power steering unit 44 in the left-right direction. The steering angle (steering angle) of the left and right front wheels 3 is changed by the expansion and contraction of the left and right piston rods 45 in the power steering unit 44.

  That is, when the steering handle 26 is turned, the power cylinder valve 47 for power steering operates in proportion to the turning angle (operation amount), and the left and right piston rods 45 in the power steering unit 44 expand and contract. As a result, the steering angle of the front wheel 3 changes via the knuckle arm 46, and the traveling direction of the traveling machine body 2 changes according to the turning angle of the steering handle 26. The steering mechanism is not limited to the hydraulic power steering unit 44 described above, but may be an electric power steering unit using an electric motor as a power source. In the case of an electric power steering unit, a rack and pinion type can be adopted. Among rack and pinion types, a column assist type that drives a steering shaft, a pinion assist type that drives a pinion that meshes with the rack shaft, or the rack shaft itself The rack assist type that drives can be selected.

  As shown in FIGS. 1 to 4, a rear differential case 48 is attached to the rear frame 6 c of the vehicle body frame 6. In the embodiment, the rear box portion 8b (specifically, the bottom cover plate 6d) of the engine room 8 is formed with a recessed portion 8c that opens downward and to the left and right, and a rear differential is formed in the recessed portion 8c. A case 48 is arranged. Therefore, the engine 5 according to the embodiment is located in front of the recessed portion 8 c where the rear differential case 48 is provided.

  The left and right rear wheels 4 are supported by the rear frame 6c of the vehicle body frame 6 via an independent suspension mechanism 49. The power of the engine 5 is transmitted from the transmission output shaft (not shown) for the rear wheel of the transmission case 7 via the rear wheel propulsion shaft 50 with a universal joint penetrating the front surface of the recess portion 8c in the rear box portion 8b. It is transmitted to the rear differential case 48. Then, as a result of the rotational power being transmitted to the left and right rear wheels 4 via the rear wheel drive shaft 51 protruding outward in the left and right directions on the rear differential case 48, the left and right rear wheels 4 are driven to rotate. Become.

  Now, on the rear box portion 8 b of the engine room 8, an upward opening box type carrier 52 is provided via a movement guide means 53. The movement guide means 53 is slidable back and forth with respect to the rear box portion 8b and supports the carriage 52 so as to be rotatable up and down around the rear side, and is provided on the upper surface of the rear box portion 8b. A pair of left and right movable rails 54 disposed on the lower surface side of the loading platform 52, a pair of left and right rolling rollers 55 disposed on the lower surface side of the loading platform 52, and a hydraulic cylinder 56 for dumping as a dump mechanism for rotating the loading platform 52 up and down It has.

  The pair of left and right movable rails 54 are formed in a generally bowl shape that is long in the front and back. The rear end portions of both the movable rails 54 are pivotally supported by a horizontally long pivot shaft 58 with respect to a hinge member 57 projecting upward from the rear upper frame 16. The loading platform 52 can be turned up and down by turning up and down around the turning support shaft 58 of both the movable rails 54.

  As shown in detail in FIG. 12 (a), a pair of left and right hinge plates 59 project downward from the lower surface of the loading platform 52. The pair of left and right hinge plates 59 are provided with rolling shafts. 60 are each rotatably supported. And the rolling roller 55 is attached to the location of each rolling shaft 60 on the left and right outer sides from the hinge plate 59. Each rolling roller 55 is fitted on the inner surface side of the corresponding movable rail 54. For this reason, the loading platform 52 can slide back and forth along the left and right movable rails 54 (see FIG. 7).

  On one side of the loading platform 52, a rotary loading platform fixing lever 61 as a lock operating tool is arranged. The loading platform fixing lever 61 is configured to be capable of rotating around a lever shaft 62 that penetrates the left and right movable rails 54 in the lateral direction and is provided on the loading platform 52 side. The hole in which the lever shaft 62 fits is a long slide slot 69 that is long in the front-rear direction. For this reason, the loading platform fixing lever 61 is configured to be movable back and forth along the sliding slot 69 together with the loading platform 52.

  As shown in detail in FIGS. 12B and 12C, the lever shaft 62 is integrally provided with an engaging claw 63 that is rearward (or may be forward) and has a side-view hook shape. In the bottom plate, a plurality of engagement holes 70 as engagement portions for engaging and disengaging the distal end portions of the engagement claws 63 are formed at appropriate intervals along the front-rear direction. Therefore, when the loading platform fixing lever 61 is rotated around the lever shaft 62 and the engaging claw 63 is detached from the engaging hole 70, the loading platform 52 can be moved back and forth along the left and right movable rails 54, and the lever shaft By inserting (engaging) the engaging claws 63 of 62 into the engaging holes 70, the loading platform 52 is held so as not to move forward and backward.

  A coiled spring member 71 is wound around the lever shaft 62 of the cargo bed fixing lever 61. One end of the spring member 71 is in contact with the engaging claw 63 from above, and the other end is in contact with the upper part of the inner surface of the movable rail 54. The spring member 71 is wound so that the elastic restoring force becomes stronger when the engaging claw 63 is detached from the engaging hole 70. For this reason, the loading platform fixing lever 61 is always urged by the spring member 71 in the engaging direction (the direction in which the engaging claw 63 fits into the engaging hole 70).

  The dumping hydraulic cylinder 56 for rotating the loading platform 52 up and down is disposed on the upper side in the rear box portion 8 b in the engine room 8. A long hole 64 is formed on the upper surface of the rear box portion 8b before and after the dump hydraulic cylinder 56 is passed. The cylinder-side end of the dumping hydraulic cylinder 56 is pivotally supported by a cylinder bracket 65 provided on the inner surface of the rear portion of the rear box portion 8b so as to be rotatable up and down. The end of the dumping hydraulic cylinder 56 on the piston rod 66 side is pivotally supported by a rod bracket 68 fixed to a connecting bar 67 that connects the left and right movable rails 54 so as to be vertically rotatable.

  The loading platform 52 is configured to rotate up and down around the rotation support shaft 58 by the expansion and contraction of the piston rod 66 in the dump hydraulic cylinder 56. That is, the dump cylinder valve (not shown) is switched by the tilting operation of the loading platform operating lever 31, and the piston rod 66 of the hydraulic cylinder 56 for dumping is expanded and contracted. As a result, the loading platform 52 becomes a dumping posture (tilting posture) inclined obliquely downward and backward, or takes a horizontal posture.

  Both the left and right movable rails 54 and the connecting bar 67 correspond to a dump frame that supports the loading platform 52 so as to be rotatable up and down. Further, the engaging claw 63 on the lever shaft 62 side corresponds to a locking means for adjusting the front / rear slide position of the loading platform 52 with respect to the dump frame (the left and right movable rails 54 and the connecting bar 67).

  As described above, the loading platform 52 of the embodiment can adjust the front / rear slide position in stages. In addition, due to the presence of the engaging claws 63 as the locking means, the loading platform 52 of the embodiment can be rotated up and down around the rotation support shaft 58 while preventing positional displacement at any front and rear sliding position ( It can be tilted backward by the hydraulic cylinder 56 for dumping). Therefore, the loading platform 52 in the foremost sliding position can be turned up and down (see FIG. 8), and the loading platform 52 in the rearmost sliding position can be turned up and down (see FIG. 9).

  In particular, as shown in FIG. 9, when the loading platform 52 at the rearmost slide position is turned upward to the dump posture, the ground height of the loading platform 52 can be easily reduced. For this reason, the load falls at a position closer to the ground than the conventional dump bed structure, and it is possible to prevent the load from being damaged by an impact at the time of the drop. For example, it is possible to prevent a bale binding twain or the like from being cut. Moreover, when dropping granular cargos, such as loose earth and sand, from the loading platform 52, the scattering range of granular cargos can be made narrower than before. For example, it is possible to reduce the generation of dust in a wide range due to the fall of earth and sand.

  If the loading platform 52 in the rearmost sliding position is turned upward to the dumping posture and the ground height of the loading platform 52 can be easily lowered, from the opposite view, the loading platform 52 is placed on the ground more than the conventional dump loading platform structure. This means that the luggage can be loaded on the loading platform 52 at a close position. Therefore, it is possible to easily load the luggage onto the loading platform without lifting the luggage high, and the workability of loading the luggage can be improved.

  When carrying a heavy load or carrying a heavy load, sliding the loading platform 52 forward prevents the center of gravity of the traveling machine body 2 from moving backward to prevent the traveling from becoming unstable. it can. Conversely, in the case of an empty load, the weight balance of the traveling machine body 2 can be easily improved by sliding the loading platform 52 backward. Therefore, regardless of the state of the loading platform 52, the front-rear weight balance of the traveling machine body 2 can be maintained in a good state, and traveling stability can be improved. By sliding the loading platform 52 backward, the distance from the driver's seat 34 to the rear portion of the loading platform 52 can be increased. Therefore, it is possible to mount a long object on the rear portion of the traveling machine body 2 including the loading platform 52.

  Further, in the embodiment, the engaging claw 63 as the locking means is provided on the loading platform 52 side, and is interlocked and connected to the loading platform fixing lever 61 as a locking operation tool located on the side of the loading platform 52, so that the loading platform fixing is performed. Since the engaging claw 63 is configured to be engaged and disengaged with the engaging hole 70 as the engaging portion formed in each movable rail 54 by the operation of the lever 61, the loading platform 52 is locked (position fixed). There is also an advantage that the unlocking operation can be easily performed.

  In addition, when the loading platform 52 is turned upward to be in the dumping posture, the upper surface of the rear box portion 8b is exposed, so whether the upper surface of the rear box portion 8b is opened or configured to be removable. Then, the engine 5 in the rear box portion 8b can be exposed by rotating the loading platform 52 upward to the dump posture. When such a configuration is adopted, the maintainability of the engine 5 can be improved. Various mechanisms can be employed to slide the loading platform 52 back and forth. Further, the vertical rotation (tilting) of the loading platform 52 is not limited to the hydraulic cylinder 56 for dumping, and various mechanisms such as driving with a motor can be employed.

  According to the above configuration, the engine room 8 having a sealed structure is mounted on the rear side of the vehicle body frame 6 located below the loading platform 52, and the engine 5 and the transmission case 7 are accommodated in the engine room 8. Therefore, the external transmission of noise and vibration in the UTV 1 can be suppressed, and the soundproofing and vibrationproofing can be improved. Further, the engine 5 and the transmission case 7 can be assembled in a compact manner by effectively using the space below the loading platform 52.

  The engine 5 and the transmission case 7 are positioned in front of the rear differential case 48 disposed at the rear part of the vehicle body frame 6 and are disposed in a state of being connected in series in the front-rear direction in the engine room 8. Therefore, the heavy engine 5 and the transmission case 7 are positioned closer to the center of the traveling machine body 2 in the front-rear direction, and the front-rear weight balance of the traveling machine body 2 can be easily improved.

  Further, since the engine 5 and the transmission case 7 can be arranged along the center line in the left-right direction of the traveling machine body 2, the center of gravity of the traveling machine body 2 as a whole can be lowered, and the entire traveling machine body 2 can be reduced. Weight balance can also be improved. Therefore, it can contribute to the improvement of running stability.

  In the engine room 8, the outside air for cooling the engine 5 and the transmission case 7 is circulated rearward, so that the engine 5 and the transmission case 7 are connected by the outside air taken into the engine room 8. The cooled and warmed air can be discharged from the rear part of the engine room 8 to the outside. That is, it is possible to easily ventilate the air warmed in the engine room 8 and suppress a temperature rise in the engine room 8.

  In the embodiment, the engine room 8 (the front box part 8a and the rear box part 8b) is formed with an outside air introduction port 19 for taking outside air into the engine room 8 in the bottom of the engine room 8. The generated noise leaks from the downward outside air introduction port 19 toward the ground, but the noise is attenuated due to the distance because the position of the outside air introduction port 19 is away from the operator sitting on the driver's seat 34. Or attenuated by reflection from the ground. Therefore, the formation of the outside air introduction port 19 on the bottom surface of the engine room 8 is very effective in improving the soundproofing property.

  In the embodiment, since the front side of the engine room 8 extends to the lower side of the driver's seat 34 to form the front box portion 8a, the volume of the engine room 8 below the loading platform 52 is increased, and the engine 5 and the mission are increased. A large amount of outside air for cooling the case 7 can be secured. Accordingly, the cooling efficiency of the engine 5 and the mission case 7 can be improved. Further, since the transmission case 7 and the fuel tank 11 are arranged in the front box portion 8a, there is an advantage that the front space of the engine room 8 whose volume is enlarged can be effectively used.

  Since the radiator 14 for cooling the engine coolant and the exhaust muffler 15 for reducing the exhaust noise of the engine 5 are arranged behind the engine room 8 and below the cargo bed 52, the rear part of the cargo bed 52 By utilizing the dead space below, the radiator 14 and the exhaust muffler 15 can be arranged in a compact manner. In addition, since the radiator 14 and the exhaust muffler 15 that are also heat generation sources are positioned behind the engine room 8, a temperature increase in the engine room 8 can be easily suppressed.

  Further, the left and right width dimension Wf of the front box portion 8a in which the mission case 7 is built is larger than the left and right width dimension Wb of the rear box portion 8b in which the engine 5 is built, and the outside air intake side Since the front volume of the engine room 8 can be widened, more outside air for cooling the engine 5 and the transmission case 7 can be secured. Therefore, a high effect can be exhibited in improving the cooling efficiency of the engine 5 and the mission case 7.

  On the front box portion 8a, a horizontally long tray body 32 having a plurality of article accommodating portions 33 opened upward is disposed. On the tray body 32, a seat body 35 constituting a driver seat 34 is provided. Since the article storage portion 33 of the tray body 32 is detachably or detachably disposed so as to open and close, the lower side of the driver seat 34 can be used as an article (load) accommodation space, The seat 35 can reliably prevent the inserted article (load) from getting wet in the rain or jumping outside.

  In addition, the seat body 35 is divided into a plurality of left and right parts, and each of the divided seat bodies 35 is configured to be able to be flipped up or detached independently, so that the number of passengers (drivers and passengers) Depending on the seating state, the article storage portion 33 of the tray body 32 can be effectively used.

  Furthermore, since the driver's seat 34 has a seat body 35 and a backrest body 36 whose angle can be adjusted in a plurality of steps or steplessly with respect to the seat body 35, the driver's seat 34 has the physique of a passenger (driver or passenger) In addition, the angle of the backrest body 36 can be set and the user can sit in an easy posture.

  Moreover, the backrest body 36 is divided into a plurality of right and left parts, and each of the divided backrest bodies 36 can be independently adjusted in a plurality of steps or in a stepless manner, so that the angle of the backrest body 36 can be adjusted. It can be matched to the physique of the driver and passengers, and can be set to a comfortable setting.

  On the rear surface of the passenger's backrest body 36 (other than for the driver), there is an accommodation recess 39 for accommodating articles (loads), and when the passenger's backrest body 36 is tilted forward, an accommodation recess 39 is provided. Since it is formed so as to open upward, there is an advantage that an article (load) can be easily placed near the driver. When the housing recess 39 is not used, dust and the like can be prevented from accumulating in the housing recess 39 by raising the backrest 36 for the passenger.

  Next, the structure around the cabin 28 and the loading platform 52 will be described. As described above, the left and right rear portions of the lops frame 27 have a shape protruding rearward so as to partially overlap the side surface of the cargo bed 52 in a side view (see FIGS. 7 to 11). Specifically, the rear side of the left and right frame pipes 27a protrudes backward so as to partially overlap the side surface of the cargo bed 52 in a side view. For this reason, the space (boarding / alighting space) of the cabin 28 enclosed by the lops frame 27 is wide, and passengers (drivers and passengers) can easily get in and out of the cabin 28.

  In addition, compared to a structure in which a rops frame exists between the driver seat 34 and the loading platform 52, the rops frame 27 is less likely to get in the way when the occupant loads the loading platform 52 in a posture to get into the driving seat 34. There is also an advantage that the operation of getting on and off the driver's seat 34 and the operation of loading and unloading the load onto the loading platform 52 can be easily performed by a series of operations (continuous operations).

  As shown in FIGS. 7 to 11, a step portion 72 having a square shape in side view is provided in the cabin 28 between the rear of the driver's seat 34 (front box portion 8 a) and the rear cowl 9. . Similar to the rear cowl 9, the step portion 72 of the embodiment is integrally provided in the engine room 8 (the rear surface of the front box portion 8a and the left and right side portions of the rear box portion 8b). Further, the left and right outer sides of the step portion 72 are supported by a frame pipe 27 a of the lops frame 27.

  As shown in FIG. 11, in the state where the loading platform 52 is retracted to the rearmost sliding position, a person can get into the space above the step portion 72 surrounded by the driver's seat 34, the rear cowl 9 and the loading platform 52. It has become. In this case, a pair of left and right auxiliary cushion bodies 74 on which a person on the step portion 72 leans is provided on the front surface of the loading platform 52. Side guard plates 73 are provided on the left and right outer sides of the step portion 72 to partition the part. The side guard plate 73 of the embodiment extends rearward from the side surface portion of the front box portion 8a.

  According to such a configuration, the space above the step portion 72 surrounded by the driver's seat 34 and the rear cowl 9 can be utilized as an article (load) accommodating space, and the article (load) can be easily placed near the passenger. Further, since the side guard plates 73 are provided on the left and right outer sides of the step portion 72, it is possible to easily prevent the article (load) placed on the step portion 72 from dropping off.

  In addition, if the loading platform 52 is moved back to the rearmost slide position, a person can get into the space above the step portion 72 surrounded by the driver's seat 34, the rear cowl 9, and the loading platform 52, so the number of passengers of the UTV 1 can be simplified. Can be increased. Furthermore, the auxiliary cushion body 74 provided on the front surface of the loading platform 52 can stably support the waist and back of a person riding on the step portion 72, and the ride comfort at the step portion 72 at the rear of the driver seat 34 can be improved. It can be improved. Further, the presence of the side guard plate 73 can prevent a person's feet riding on the step portion 72 from jumping out from the traveling machine body 2 to the left and right outside.

  In addition, the structure of each part mentioned above is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention.

It is a whole side view of UTV. It is a whole top view of UTV. It is side surface sectional drawing of an engine room. It is a plane sectional view of an engine room. It is a principal part enlarged plan view of the state where the seat body was flipped up and rotated. It is a principal part enlarged plan view of the state where the backrest was moved forward. It is a principal part expanded side view of the state which has a loading platform in the last slide position. It is a principal part expanded side view of the state which made the loading platform in a foremost slide position the dumping posture. It is a principal part expanded side view of the state which made the loading platform in the last slide position the dumping posture. It is a whole perspective view of UTV. It is a principal part expanded side view of the state which put the person on the step part. (A) is front sectional drawing of a movement guide means, (b) is front sectional drawing of a locking means, (c) is side sectional drawing of a locking means.

Explanation of symbols

1 UTV as a multi-purpose vehicle
2 traveling machine body 3 front wheel 4 rear wheel 5 engine 7 mission case 8 engine room 8a front box part 8b rear box part 9 rear cowl 10 air cleaner 11 fuel tank 14 radiator 15 exhaust muffler 19 outside air inlet 26 steering handle 27 rops frame 27a frame Pipe 27b Horizontal beam pipe 32 Tray body 33 Article housing part 34 Driver's seat 35 Seat body 36 Backrest body 39 Housing recess 48 Rear differential case 52 Car bed 53 Movement guide means 54 Movable rail 55 Rolling roller 56 Dump hydraulic cylinder 61 Carrying base fixing Lever 67 Connecting bar 69 Sliding long hole 70 Engaging hole 71 as engaging part Spring member 72 Step part 73 Side guard plate 74 Auxiliary cushion body

Claims (3)

A traveling body supported by four front and rear wheels, an engine mounted on the traveling body, a transmission case that transmits rotation of the engine to at least the left and right rear wheels, a steering handle and a driving seat, and the driving seat A multipurpose vehicle having a loading platform arranged behind the vehicle,
A dump frame that can be rotated up and down around the rear side by a dump mechanism is provided on the engine room disposed at the rear of the traveling machine body, and the loading platform can be moved back and forth with respect to the dump frame. Provided,
Multipurpose vehicle. A lock means for adjusting the front-rear position of the loading platform with respect to the dump frame;
The multipurpose vehicle according to claim 1. The locking means is provided on the loading platform side and is interlocked with a locking operation tool located on the side of the loading platform, and the locking means is formed on the dump frame by the operation of the locking operation tool. Configured to be engaged with and disengaged from the engaging portion,
The multipurpose vehicle according to claim 2.