JP6341848B2 - Work vehicle - Google Patents

Description

  The present invention relates to a bonnet that opens and closes by swinging up and down with respect to the vehicle body frame, a swing member that is connected to the bonnet so as to swing up and down, and a body frame that receives and supports the swing member from below so as to be relatively slidable. The present invention relates to a work vehicle including a support member coupled to a side and an engagement member that engages and holds the swinging member in a protruding posture with respect to the bonnet.

  As a working vehicle as described above, a swinging member (stretching member) is connected to a hood so as to be swingable up and down, and a support member (support bracket) that also serves as an engagement member is provided in the engine on the vehicle body frame side. There is a structure in which a spring member that swings and urges toward the support member is stretched between the swing member and the second frame member on the body frame side (see, for example, Patent Document 1).

JP 2014-125107 A (paragraph numbers 0026 to 0030, FIGS. 2 to 5)

  In the above configuration, the swing member vibrates regardless of the action of the spring member due to the influence of the vibration of the engine or the vibration of the airframe during traveling. Then, this vibration may cause a disadvantage that the swinging member collides with the support member or the like to generate abnormal noise (buzzing sound).

  An object of the present invention is to prevent generation of abnormal noise caused by vibration of a swing member.

In the problem solving means of the present invention,
A bonnet that opens and closes by swinging up and down with respect to the vehicle body frame, a swinging member that is connected to the bonnet so as to swing up and down, and an intermediate part in the longitudinal direction of the swinging member that can slide relative to each other when the bonnet is opened and closed. A support member coupled to the vehicle body frame side to receive and support, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
Along the longitudinal direction of the oscillating member, the bonnet is located at a predetermined position on the vehicle body frame side facing the distal end portion of the oscillating member on the extension line in the extending direction of the oscillating member in a state where the bonnet is in the closed position. An elastic body is provided in contact so that the tip side portion of the swing member is pressed .

  According to this means, in the state where the bonnet is located at the closed position, the tip side portion of the swinging member contacts the elastic body, so that it is affected by the vibration of the engine or the vibration of the airframe during traveling. The occurrence of problems such as vibration of the swinging member can be prevented.

  In particular, when the tip side portion, which is the free end of the swing member, contacts the elastic body, for example, the vibration of the swing member can be further reduced as compared with the case where the central portion of the swing member contacts the elastic body. It can be reliably prevented.

  As a result, it is possible to avoid the generation of noise caused by the vibration of the swinging member and the collision with the support member due to the influence of the vibration of the engine or the vibration of the airframe while traveling. .

In the problem solving means of the present invention,
A bonnet for opening and closing the swing vertically relative to the car body frame, a swing member connected vertically swingably to the bonnet, coupled to the body frame so as to support receiving from below the swing member so as to be relatively slidable A support member, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
In a state where the bonnet is located at the closed position, an elastic body that contacts the tip side portion is provided at a predetermined position on the vehicle body frame side that faces the tip side portion of the swing member,
The elastic body includes a slit into which the tip side portion is engaged.

  According to this means, in a state where the bonnet is located at the closed position, the tip side portion of the swinging member comes into contact with the elastic body while being engaged with the slit of the elastic body. Accordingly, it is possible to more reliably prevent the occurrence of a problem such as the vibration of the swinging member due to the influence of the vibration of the engine or the vibration of the airframe during traveling.

  As a result, the generation of abnormal noise caused by the vibration of the swinging member and the collision with the support member due to the influence of the vibration of the engine or the vibration of the airframe while traveling is more reliably avoided. be able to.

  Further, even if the setting is made so that the contact of the swinging member with the elastic body in the state where the bonnet is in the closed position is weakened, the tip side portion of the swinging member is engaged with the slit of the elastic body. Due to the holding action, the vibration of the swinging member can be prevented.

  That is, it becomes possible to weaken the contact of the swinging member with the elastic body in a state where the bonnet is located at the closed position, thereby reducing the load acting on the elastic body due to the contact at that time. Can do.

  By the way, for example, in a configuration in which the elastic body is attached to a predetermined position on the vehicle body frame side and set so that the contact of the swinging member with the elastic body in a state where the bonnet is positioned at the closed position is strengthened. There is a risk that the elastic body is likely to be peeled off from a predetermined position on the vehicle body frame side due to an increase in compressive deformation of the elastic body accompanying the contact of the swing member.

  On the other hand, with this means, as described above, it is possible to weaken the contact of the swinging member with the elastic body in the state where the bonnet is located at the closed position. The accompanying compression deformation of the elastic body can be suppressed.

  As a result, the oscillating member is suppressed while preventing the inconvenience that the elastic body easily peels off from a predetermined position on the vehicle body frame side due to an increase in compression deformation of the elastic body accompanying the contact of the oscillating member. It is possible to avoid the generation of abnormal noise caused by the vibration of the motor and the collision with the support member or the like.

In the problem solving means of the present invention,
A bonnet for opening and closing the swing vertically relative to the car body frame, a swing member connected vertically swingably to the bonnet, coupled to the body frame so as to support receiving from below the swing member so as to be relatively slidable A support member, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
In a state where the bonnet is located at the closed position, an elastic body that contacts the tip side portion is provided at a predetermined position on the vehicle body frame side that faces the tip side portion of the swing member,
The tip end portion is formed to be long in the swinging direction of the swinging member.

  According to this means, since the tip end portion of the swing member is long in the vertical direction, which is the swing direction of the swing member, the tip end portion of the swing member and the elastic body with the bonnet positioned at the closed position The contact area in the vertical direction can be increased.

  As a result, it is possible to more reliably prevent the vibration of the swing member in the left-right direction due to the influence of the engine vibration or the vibration of the airframe during traveling.

  As a result, it is possible to more reliably prevent the generation of abnormal noise caused by the swinging member vibrating in the left-right direction and colliding with the support member.

In the problem solving means of the present invention,
A bonnet for opening and closing the swing vertically relative to the car body frame, a swing member connected vertically swingably to the bonnet, coupled to the body frame so as to support receiving from below the swing member so as to be relatively slidable A support member, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
In a state where the bonnet is located at the closed position, an elastic body that contacts the tip side portion is provided at a predetermined position on the vehicle body frame side that faces the tip side portion of the swing member,
Affixing the elastic body to the predetermined position;
A slit for preventing peeling is formed near the contact portion of the elastic body with the tip side portion.

  According to this means, for example, when the contact of the swinging member with the elastic body in a state where the bonnet is located at the closed position is strengthened in order to more reliably prevent the swinging member from vibrating, the contact at this time Even if the contact portion of the elastic member with the tip side portion of the rocking member is greatly compressed and deformed, the slit for preventing peeling opens according to the deformation at this time, so that the elastic body is for preventing peeling. Compressive deformation at the non-contact portion located on the opposite side of the contact portion across the slit can be effectively suppressed.

  As a result, when the front end side portion of the swinging member comes into contact with the elastic body, the elastic body easily peels off from a predetermined position on the vehicle body frame side due to the large compression deformation of the non-contact portion together with the contact portion of the elastic body. It is possible to prevent the occurrence of inconvenience such as.

As a result, it is possible to more reliably avoid the generation of abnormal noise caused by the swinging member vibrating and colliding with the support member while preventing the elastic body from peeling off.
As one of the means for making the present invention more suitable,
The elastic body includes a recess into which the tip side portion is engaged.
According to this means, in a state where the bonnet is positioned at the closed position, the tip side portion of the swing member comes into contact with the elastic body while being engaged with the concave portion of the elastic body. Accordingly, it is possible to more reliably prevent the occurrence of a problem such as the vibration of the swinging member due to the influence of the vibration of the engine or the vibration of the airframe during traveling.
As a result, the generation of abnormal noise caused by the vibration of the swinging member and the collision with the support member due to the influence of the vibration of the engine or the vibration of the airframe while traveling is more reliably avoided. be able to.
Further, even if the setting is made so that the contact of the swinging member with the elastic body in the state where the bonnet is in the closed position is weakened, the tip side portion of the swinging member is engaged with the recess of the elastic body. Due to the holding action, the vibration of the swinging member can be prevented.
That is, it becomes possible to weaken the contact of the swinging member with the elastic body in a state where the bonnet is located at the closed position, thereby reducing the load acting on the elastic body due to the contact at that time. Can do.
By the way, for example, in a configuration in which the elastic body is attached to a predetermined position on the vehicle body frame side and set so that the contact of the swinging member with the elastic body in a state where the bonnet is positioned at the closed position is strengthened. There is a risk that the elastic body is likely to be peeled off from a predetermined position on the vehicle body frame side due to an increase in compressive deformation of the elastic body accompanying the contact of the swing member.
On the other hand, with this means, as described above, it is possible to weaken the contact of the swinging member with the elastic body in the state where the bonnet is located at the closed position. The accompanying compression deformation of the elastic body can be suppressed.
As a result, the oscillating member is suppressed while preventing the inconvenience that the elastic body easily peels off from a predetermined position on the vehicle body frame side due to an increase in compression deformation of the elastic body accompanying the contact of the oscillating member. It is possible to avoid the generation of abnormal noise caused by the vibration of the motor and the collision with the support member or the like.

It is a left view of a tractor. It is a vertical left side view of a driving part. It is a vertical left side view of the main part showing the configuration of the holding mechanism and the elastic body. It is a perspective view of the principal part which shows the structure of a holding mechanism. It is a perspective view of the principal part which shows the state which the front end side part of the rocking | swiveling member was engaged and contacted with the recessed part of the elastic body. It is a cross-sectional top view of the principal part which shows the state (A) in which the front end side part of the rocking | fluctuation member left | separated from the recessed part of the elastic body, and the state (B) which engaged and contacted the recessed part. A state in which the tip side portion of the swing member in another embodiment in which a slit for preventing peeling is formed near the concave portion in the elastic body is separated from the concave portion (A), and a state in which it is engaged with the concave portion (B). FIG. A state in which the distal end portion of the swinging member is separated from the contact part in another embodiment in which the elastic body is not provided with a recess and a slit for preventing peeling is formed near the contact part of the elastic body with the swinging member (A ) And a state (B) in contact with the contact portion. A state in which the distal end portion of the swinging member in another embodiment in which the slit for engaging the swinging member and the slit for preventing peeling is formed in the elastic body is separated from the slit for engaging the swinging member (A) It is a cross-sectional top view of the principal part which shows the state (B) which engaged and contacted the slit for rocking | fluctuating member engagement. It is the vertical left side view (A) and vertical front view (B) of the principal part which shows another embodiment provided with another elastic body in the bonnet.

  Hereinafter, as an example of an embodiment for carrying out the present invention, an embodiment in which the present invention is applied to a tractor that is an example of a work vehicle will be described with reference to the drawings.

In Figures 1 and 2 are upper paper surface of left tractor, the plane of the upper is the rear side of the tractor.
In FIG. 3, the left side of the page is the front side of the tractor, and the upper side of the page is the upper side of the tractor.
In FIG. 4, the upper left side of the page is the right side of the tractor, and the lower left side of the page is the front side of the tractor.
In FIG. 5, the upper left side of the page is the front side of the tractor, and the lower left side of the page is the left side of the tractor.
In FIG. 6, the left side of the page is the front side of the tractor, and the upper side of the page is the right side of the tractor.

  As shown in FIG. 1, the tractor illustrated in this embodiment includes a driving unit 2 in the front half of the body frame 1 and a boarding operation unit 3 in the rear half of the body frame 1. A front wheel 4 as a steerable wheel that can be driven to the left and right of the driving unit 2 is provided, and a rear wheel 5 as a brakeable drive wheel is provided to the left and right of the boarding operation unit 3 to form a four-wheel drive type. ing.

As shown in FIGS. 1 and 2, the vehicle body frame 1 includes a front frame 6 that forms the front side thereof, a water-cooled engine 7 that is connected to the rear part of the front frame 6, and a clutch housing that is connected to the rear lower part of the engine 7. 8, an intermediate frame 9 connected to the rear portion of the clutch housing 8, a transmission case 10 connected to the rear end portion of the intermediate frame 9, and the like.
A support frame 11 having a downward U-shape when viewed in the front-rear direction is erected at the rear end portion of the clutch housing 8.

  As shown in FIGS. 1 to 3, the prime mover 2 includes a hood 12 that forms an arrangement space for the engine 7 and the like, and a heat shield that partitions the arrangement space into an engine room on the front side of the vehicle body and a tank room on the rear side of the vehicle body. 13, etc. The engine room includes an engine 7, a cooling fan 14, a radiator 15, an air cleaner 16, a muffler (not shown), a battery 18, and the like. A fuel tank 19 is provided in the tank room.

  In the bonnet 12, a fitting portion 12 </ b> A provided at the upper end of the rear end is externally fitted to a left and right support shaft 20 provided at the upper portion of the support frame 11 so as to be relatively rotatable. As a result, the bonnet 12 swings up and down with the support shaft 20 of the support frame 11 located at the upper part of the rear end as a fulcrum. And the bonnet 12 will be in the state which covers the engine 7, the radiator 15, etc. from upper direction by reaching the closed position below by the vertical swing. Further, the bonnet 12 reaches the upper open position by its vertical swing, and thus the engine 7 and the radiator 15 are exposed to the outside. Thereby, maintenance with respect to the engine 7, the radiator 15, etc. is attained.

  The cooling fan 14 takes in outside air from the front grill 12B of the bonnet 12 into the engine room by rotating with the power from the engine 7 disposed behind the cooling fan 14. The cooling fan 14 supplies the taken outside air as cooling air to the engine 7 and the radiator 15 and the like. The radiator 15 includes a fan shroud 21 that extends from the radiator 15 to the cooling fan 14 disposed adjacent to the back of the radiator 15 in order to improve the cooling efficiency by the cooling air.

  As shown in FIGS. 1 to 5, the prime mover 2 includes a holding mechanism 22 that enables the bonnet 12 to be held at the open position. The holding mechanism 22 includes a swing member 23 that is connected to the bonnet 12 so as to be swingable up and down, a support member 24 that receives and supports the swing member 23 from below so as to be relatively slidable, and a swing member 23 that stretches against the bonnet 12. An engagement member 25 that engages and holds in a posture is provided.

  The swing member 23 is made of a round bar steel material. Then, a left and right support shaft portion 23 </ b> A serving as a swing fulcrum of the swing member 23 is formed at one end of the swing member 23 by bending. In addition, a U-shaped engaging portion 23 </ b> B is formed at the other end portion of the swing member 23 so as to be engaged with the engaging member 25 and viewed downward in a side view. The support shaft portion 23A of the swing member 23 is connected to a support member 26 provided on the rear upper part of the inner surface of the bonnet so as to be relatively rotatable. Then, a torsion spring 27 as an urging means for urging and oscillating the oscillating member 23 downward with a relatively weak force is fitted on the support shaft portion 23A of the oscillating member 23.

  The support member 24 is erected on a holding member 28 for an air cleaner that is bolted to the upper portion of the engine 7 that also serves as a part of the vehicle body frame 1. Further, the support member 24 is formed in an L shape in plan view including a right wall portion 24A and a rear wall portion 24B. Then, on the upper side of the rear wall portion 24B, a vertically long first through hole 24C through which the swing member 23 is inserted, and a distal end portion 23C of the swing member 23 which is an example of the distal end portion 23C of the swing member 23 are provided. The circular second through hole 24D to be engaged is formed adjacent to the upper and lower sides in an arrangement in which the first through hole 24C is located above. Further, by forming the first through hole 24C and the second through hole 24D in this way, the portion of the rear wall portion 24B between the first through hole 24C and the second through hole 24D is allowed to swing. It functions as a support portion 24E that receives and supports the slidable from below.

  The swinging member 23 is lifted and swung with respect to the bonnet 12 as the bonnet 12 is lowered and swung to the closed position, and is lifted and swung to the open position of the bonnet 12 by the support of the support member 24. Accordingly, it swings downward with respect to the bonnet 12. When the bonnet 12 is in the closed position, the swinging member 23 is stored in the bonnet, and the tip 23C of the swinging member 23 is in the fan shroud 21, which is an example of the vehicle body frame side. Opposite the upper left and right center of the back side. Further, as the bonnet 12 reaches the open position, the swinging member 23 engages the distal end portion 23C of the swinging member 23 into the second through hole 24D of the support member 24, and thereby swings. The engaging portion 23 </ b> B of the member 23 engages with the support portion 24 </ b> E of the support member 24. And by this engagement, the rocking | swiveling member 23 is engaged and hold | maintained with the tension attitude | position with respect to the bonnet 12, and this hold | maintains the bonnet 12 in an open position.

  In other words, in the prime mover 2, the support member 24 including the support portion 24 </ b> E engaged with the engaging portion 23 </ b> B of the swinging member 23 engages and holds the swinging member 23 in a protruding posture with respect to the bonnet 12. The member 25 is also used.

  The torsion spring 27 maintains the state in which the swing member 23 is in contact with the support portion 24 </ b> E of the support member 24 due to its action. As a result, when the bonnet 12 reaches the open position, the distal end portion 23C of the swing member 23 is smoothly and reliably engaged with the second through hole 24D of the support member 24, and the swing member 23 is engaged. The joint portion 23B is configured to smoothly and reliably engage with the support portion 24E of the support member 24.

  In a state where the bonnet 12 is held at the open position, the holding mechanism 22 causes the swinging member 23 to swing up and down against the action of the torsion spring 27 by an artificial operation of the swinging member 23, thereby moving the swinging member 23. By disengaging the 23 engaging portions 23B from the support portion 24E of the support member 24, the holding of the bonnet 12 in the open position can be released.

  As shown in FIG. 2, the prime mover 2 includes a locking mechanism 29 that enables the bonnet 12 to be locked and held at the closed position. The locking mechanism 29 includes a front-rear locking member 30 disposed at the lower front end of the bonnet 12, and a locking unit 31 disposed at the front upper portion of the front frame 6 in a state that allows the locking member 30 to be engaged and disengaged. , Etc. The locking unit 31 on the front frame side automatically locks to the locking member 30 on the bonnet side as the bonnet 12 reaches the closed position. Thereby, the bonnet 12 can be locked and held at the closed position. Further, the locking unit 31 on the front frame side can release the locking on the locking member 30 on the bonnet side by an artificial operation. Thereby, the latching holding | maintenance in the obstruction | occlusion position of the bonnet 12 can be cancelled | released.

  As shown in FIGS. 1 to 3, 5, and 6, the driving unit 2 is configured such that the bonnet 12 is pressed by the tip 23 </ b> C of the oscillating member 23 in a state where the bonnet 12 is located at the closed position. The elastic body 32 which contacts the front-end | tip part 23C is provided. The elastic body 32 is a resin foam such as rubber sponge or polypropylene foam, and the fan shroud 21 which is a predetermined position on the vehicle body frame side facing the distal end portion 23C of the swing member 23 in a state where the bonnet 12 is located at the closed position. It is affixed on the upper left and right center side parts on the back side. Further, as an example of the contact portion 32A with which the distal end portion 23C of the swinging member 23 comes into contact, a concave portion 32a into which the distal end portion 23C of the swinging member 23 is engaged is provided on the center side of the back surface of the elastic body 32.

  The distal end portion 23 </ b> C of the swing member 23 engages and contacts the recess 32 a of the elastic body 32 in a state where the bonnet 12 is located at the closed position. Then, as described above, the distal end portion 23C is formed by bending the U-shaped engagement portion 23B facing downward in the side view at the other end portion of the swing member 23, so Longer in the direction. Accordingly, the recess 32a of the elastic body 32 is formed long in the vertical direction.

  Then, by providing the elastic body 32 as described above, in a state where the bonnet 12 is locked and held at the closed position, the distal end portion 23C of the swing member 23 is engaged with the concave portion 32a of the elastic body 32, The elastic body 32 is in contact with the concave portion 32 a of the elastic body 32 while being pressed. Thereby, it is possible to prevent the occurrence of a problem that the swing member 23 vibrates regardless of the action of the torsion spring 27 due to the influence of the vibration of the engine 7 or the vibration of the airframe during traveling. As a result, it is possible to avoid the generation of abnormal noise caused by the swinging member 23 vibrating and colliding with the support member 24 and the like.

  Further, in a state where the bonnet 12 is locked and held at the closed position, a holding action can be obtained by engaging the distal end portion 23 </ b> C of the swing member 23 into the recess 32 a of the elastic body 32. Therefore, even if the pressing of the swing member 23 against the elastic body 32 in a state where the bonnet 12 is locked and held at the closed position is weakened, the vibration of the swing member 23 can be prevented. Thereby, the deformation of the elastic body 32 accompanying the pressing of the swinging member 23 may be caused when the pressing of the swinging member 23 against the elastic body 32 in a state where the bonnet 12 is locked and held at the closed position. While preventing the inconvenience that the elastic body 32 becomes easy to peel off from the fan shroud 21, the generation of noise caused by the swinging member 23 vibrating and colliding with the support member 24 is avoided. can do.

  Moreover, since the tip 23C of the swing member 23 is long in the vertical direction and the recess 32a of the elastic body 32 is also long in the vertical direction, the tip of the swing member 23 in a state where the bonnet 12 is locked and held at the closed position. The contact area in the vertical direction between the portion 23 </ b> C and the recess 32 a of the elastic body 32 can be increased. Thereby, the vibration of the swing member 23 in the left-right direction due to the influence of the vibration of the engine 7 or the vibration of the airframe during traveling can be more reliably prevented. As a result, it is possible to more reliably avoid the generation of abnormal noise caused by the swinging member 23 vibrating in the left-right direction and colliding with the support member 24 and the like.

  As shown in FIG. 5, the fan shroud 21 is formed with left and right reinforcing ribs 21 </ b> A on the back side of the upper portion thereof, with the elastic material 32 being pasted. Thereby, in a state where the bonnet 12 is locked and held at the closed position, the deformation of the fan shroud 21 due to the distal end portion 23 </ b> C of the swing member 23 pressing the elastic body 32 can be suppressed. As a result, the deformation of the fan shroud 21 makes it possible to avoid the inconvenience that the contact between the distal end portion 23C of the swing member 23 and the recess 32a of the elastic body 32 weakens and the swing member 23 vibrates.

  [Another embodiment]

[1] The configuration of the bonnet 12 can be variously changed.
For example, you may comprise the bonnet 12 so that it may rock | fluctuate up and down by using the front end lower part as a fulcrum.
Further, the bonnet 12 may be configured such that the upper panel and the front panel swing together while leaving the left and right side panels.

[2] The configuration of the swing member 23 can be variously changed.
For example, the oscillating member 23 may be constituted by a long steel member such as a square bar steel material or a strip steel plate, or a long resin member.
Further, at least one of the support shaft portion 23A, the engaging portion 23B, and the distal end portion 23C provided in the swing member 23 is provided by connecting or welding another member to the swing member 23. May be.

[3] The arrangement of the support shaft portion 23A, the engaging portion 23B, and the distal end portion 23C in the swing member 23 can be variously changed.
For example, the support shaft portion 23 </ b> A and the engagement portion 23 </ b> B may be provided at positions closer to the center than both ends of the swing member 23.
Further, the distal end side portion 23 </ b> C that contacts the elastic body 32 may be provided at a position closer to the center than the distal end portion of the swing member 23.
Further, an engaging portion 23B may be provided at the tip of the swing member 23, and a tip end portion 23C that contacts the elastic body 32 may be provided at a position closer to the center than the engaging portion 23B of the swing member 23.
Alternatively, the tip of the swing member 23 may be provided with a tip end portion 23C that contacts the elastic body 32, and the engaging portion 23B may be provided at a position closer to the center than the tip end portion 23C of the swing member 23.

[4] The swing member 23 may be configured to swing and urge downward by, for example, a tension spring (biasing means) spanned between the swing member 23 and the body frame side.
Further, the swing member 23 may be configured to swing downward by its own weight without providing the biasing means.

[5] The configuration of the support member 24 can be variously changed.
For example, the support member 24 may be configured in a U shape in a plan view.
Further, a concave portion such as a V-shape or U-shape is formed on the upper end portion of the support member 24, and the upper end portion of the support member 24 receives and supports the swing member 23 from below so as to be slidable relative to the support portion 24E. You may comprise so that it may become.

[6] In the above embodiment, the configuration in which the support member 24 also serves as the engagement member 25 is illustrated, but the support member 24 and the engagement member 25 may be provided separately.

[7] The configuration of the elastic body 32 can be variously changed.
For example, as shown in FIGS. 7 to 9, the slits 32 </ b> B for preventing peeling may be formed vertically on the left and right sides of the contact portion 32 </ b> A near the contact portion 32 </ b> A in the elastic body 32.
Further, although not shown in the figure, slits 32B for preventing peeling may be formed in the left-right direction at both the upper part and the lower part of the contact part 32A near the contact part 32A in the elastic body 32.
Further, although not shown in the drawings, a slit 32B for preventing peeling may be formed over the entire upper, lower, left, and right circumferences of the contact portion 32A close to the contact portion 32A in the elastic body 32.
Further, for example, as shown in FIG. 8, the elastic body 32 may be configured to include a contact surface 32b as the contact portion 32A without including the concave portion 32a.
Further, as shown in FIG. 9, the elastic body 32 may be configured to include a slit 32c for engaging the swinging member instead of the recess 32a as the contact portion 32A.
Although not shown, the elastic body 32 includes a recess 32a as a contact portion 32A and a slit 32c for engaging the swinging member, and the recess 32a is located on the upper side in the engaging direction of the swinging member 23 in the elastic body 32. And the slit 32c for engaging the oscillating member is located on the lower side of the elastic member 32 in the engaging direction of the oscillating member 23 so as to be connected to the engaging direction of the oscillating member 23. You may comprise.
Although not shown in the drawings, the elastic body 32 may be configured so that a slit 32c for engaging the swinging member is formed between a pair of adjacent elastic members disposed between the opposing surfaces.
Although not shown, the elastic body 32 includes a swinging member engaging slit 32c as the contact portion 32A, and the swinging member 23 of the elastic body 32 is more than the engaging member engaging slit 32c. You may comprise so that the front-end | tip side of the rocking | swiveling member 23 which penetrated the slit 32c for rocking | fluctuating member engagement may enter in the position of the engagement direction lower side.
7 to 9, the left side of the paper surface is the front side of the tractor, and the upper side of the paper surface is the right side of the tractor.

[8] The swinging member 23 is configured to have a distal end portion 23C that is long in the left-right direction, and the elastic body 32 is a recess 32a or slit 32c that is long in the left-right direction depending on the length of the distal end portion 23C. You may comprise so that it may have.
Further, the swing member 23 is configured to have the tip side portion 23C having the same length in the vertical direction and the length in the horizontal direction, and the elastic body 32 is set in the vertical direction similarly to the tip side portion 23C. And the length in the left-right direction may be configured to have a recess 32a having the same length.

[9] In the above embodiment, as a configuration for holding the bonnet 12 in the open position, the engaging portion 23B of the swing member 23 is attached to the torsion spring 27 (attached) as the bonnet 12 reaches the open position. The automatic engagement type that engages with the support portion 24E of the support member 24 (engagement member 25) by the action of the biasing means is illustrated, but instead of this, for example, the swing after operating the bonnet 12 to the open position You may comprise by the manual engagement type which the engaging part 23B of the rocking | swiveling member 23 engages with the support part 24E of the support member 24 (engagement member 25) by manual operation with respect to the member 23. FIG.

[10] The arrangement of the elastic body 32 can be variously changed.
For example, when the predetermined position on the vehicle body frame side facing the tip end portion 23C of the swing member 23 is the upper side of the radiator 15 in a state where the bonnet 12 is located at the closed position, an elastic body is formed on the upper side of the radiator 15. 32 may be provided.
Further, when the predetermined position on the vehicle body frame side facing the distal end portion 23C of the swing member 23 is the upper side of the heat shield wall 13 in a state where the bonnet 12 is located at the closed position, the upper portion of the heat shield wall 13 The elastic body 32 may be provided on the side.

[11] For example, as shown in FIG. 10, in addition to the elastic body 32 exemplified in the embodiment, in the state where the bonnet 12 is located at the closed position, another portion that comes into contact with the support shaft side portion 23 </ b> D of the swing member 23. The elastic body 33 may be provided on the upper inner surface of the bonnet 12. And in this structure, the recessed part or slit which the spindle part side of the rocking | swiveling member 23 engages as a contact part 33A with the spindle part side of the rocking | swiveling member 23 in the left-right intermediate part of the lower surface in the elastic body 33 is provided. The elastic body 33 may be formed over both front and rear ends, or a contact surface may be provided as the contact portion 33A without forming a recess or a slit.
In FIG. 10A, the left side of the page is the front side of the tractor, and the upper side of the page is the upper side of the tractor. In FIG. 10B, the left side of the paper is the right side of the tractor, and the upper side of the paper is the upper side of the tractor.

[12] The material and hardness of the elastic body 32 can be variously changed.

  The present invention includes a bonnet that opens and closes by swinging up and down with respect to a vehicle body frame, a swing member that is connected to the bonnet so as to swing up and down, and a swing member that receives and supports the swing member from below so as to be relatively slidable. The present invention can be applied to work vehicles such as a tractor, a mower, a rice transplanter, and a multi-purpose transporter that include a connected support member and an engagement member that engages and holds the swinging member in a protruding posture with respect to the bonnet.

DESCRIPTION OF SYMBOLS 1 Body frame 12 Bonnet 23 Swing member 23C Front end side part 24 Support member 25 Engagement member 32 Elastic body 32A Contact part 32a Recess 32c Slit 32B Slit prevention

Claims (5)

A bonnet that opens and closes by swinging up and down with respect to the vehicle body frame, a swinging member that is connected to the bonnet so as to swing up and down, and an intermediate part in the longitudinal direction of the swinging member that can slide relative to each other when the bonnet is opened and closed. A support member coupled to the vehicle body frame side to receive and support, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
Along the longitudinal direction of the oscillating member, the bonnet is located at a predetermined position on the vehicle body frame side facing the distal end portion of the oscillating member on the extension line in the extending direction of the oscillating member in a state where the bonnet is in the closed position. A work vehicle including an elastic body that comes into contact with the tip side portion of the swing member so as to be pressed . A bonnet that opens and closes by swinging up and down with respect to the body frame, a swinging member that is connected to the bonnet so as to swing up and down, and a swinging member that is connected to the body frame side so as to receive and support the swinging member from below. A support member, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
In a state where the bonnet is located at the closed position, an elastic body that contacts the tip side portion is provided at a predetermined position on the vehicle body frame side that faces the tip side portion of the swing member ,
The elastic body is a work vehicle provided with a slit into which the tip side portion is engaged . A bonnet that opens and closes by swinging up and down with respect to the body frame, a swinging member that is connected to the bonnet so as to swing up and down, and a swinging member that is connected to the body frame side so as to receive and support the swinging member from below. A support member, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
In a state where the bonnet is located at the closed position, an elastic body that contacts the tip side portion is provided at a predetermined position on the vehicle body frame side that faces the tip side portion of the swing member ,
A work vehicle in which the tip end portion is formed to be long in a swinging direction of the swinging member . A bonnet that opens and closes by swinging up and down with respect to the body frame, a swinging member that is connected to the bonnet so as to swing up and down, and a swinging member that is connected to the body frame side so as to receive and support the swinging member from below. A support member, and an engagement member that engages and holds the swinging member in a stretched posture with respect to the bonnet,
The swinging member swings up and down in conjunction with the vertical swinging of the bonnet by receiving and supporting the support member, and engages the engaging member at an open position of the bonnet to engage the bonnet. Hold in the open position,
In a state where the bonnet is located at the closed position, an elastic body that contacts the tip side portion is provided at a predetermined position on the vehicle body frame side that faces the tip side portion of the swing member ,
Affixing the elastic body to the predetermined position;
A work vehicle in which a slit for preventing peeling is formed near a contact portion of the elastic body with the tip side portion . The work vehicle according to any one of claims 1 to 4, wherein the elastic body includes a recess into which the tip side portion is engaged.

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