Tractor

Abstract

To provide a tractor capable of improving workability on work in a house or work on the edge of the field.SOLUTION: A tractor includes a bonnet 11 and headlights 21. The bonnet 11 is provided on a front part of a traveling machine body 5 and includes notch parts 23 on both sides in the vehicle width direction. The headlights 21 are each provided on each of the notch parts 23. An outer end surface 21a and a front end surface 21c in the vehicle width direction of the headlight 21 are arranged inside in the vehicle width direction from an outermost end in the vehicle width direction of the bonnet 11 at a height direction of an upper end 21b of the headlight 21.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a tractor. [Background technology]

[0002] Conventionally, there has been known a tractor having a bonnet with left and right cutouts and headlights provided in the left and right cutouts to illuminate the front. Patent Document 1 discloses this type of tractor.

[0003] In the tractor of Patent Document 1, left and right cutouts are formed in the front part of the bonnet. Headlights are provided in each of the left and right cutouts so that they can be exposed to the outside. The headlights are configured to protrude outward in the left and right direction of the bonnet. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6148558 Summary of the Invention [Problem to be solved by the invention]

[0005] In the configuration of the above-mentioned Patent Document 1, the headlight protrudes from the bonnet to the outside of the machine body near the height position (vertical position) of the upper end of the headlight. In other words, a part of the headlight is located on the outside of the machine body relative to the bonnet. Therefore, when turning during work, there is a risk that the headlight will come into contact with objects around the tractor. Specifically, when the tractor turns while working inside a greenhouse, there is a risk that the headlight will come into contact with a pillar of the greenhouse. Also, when the tractor turns while working on the edge of a field, there is a risk that the headlight will come into contact with a utility pole located outside the field.

[0006] As a result, tractor drivers tend to be cautious when turning due to concerns that the headlights may come into contact with an obstacle, which can result in reduced workability.

[0007] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a tractor that can improve workability when working in a greenhouse or on the edge of a field.

[0008] The problem to be solved by the present invention has been described above. Next, the means for solving this problem and the effects thereof will be described.

[0009] According to an aspect of the present invention, there is provided a tractor having the following configuration. That is, the tractor includes a bonnet and headlights. The bonnet is provided at the front of a vehicle body and has cut-outs on both sides in the vehicle width direction. The headlights are provided in each of the cut-outs. The vehicle width outer end surface and front end surface of the headlights are positioned further inward in the vehicle width direction than the outermost end of the bonnet in the vehicle width direction at the height position of the upper end of the headlights.

[0010] This allows the headlights to be moved so that they do not pass the outermost periphery of the tractor when the tractor turns. This reduces the risk to the driver of the tractor that the headlights will come into contact with objects around the tractor when the driver tries to turn the tractor. As a result, it is possible to make the tractor easier to turn and improve workability.

[0011] In the tractor, it is preferable that a front end surface of the headlamp is inclined so as to become more forward as it approaches the center from the outer side in the vehicle width direction.

[0012] This makes it possible to realize a shape in which the headlights are less likely to be positioned at the outermost periphery when the tractor is turning, thereby reducing the risk of the driver having the above-mentioned concerns when trying to travel the tractor.

[0013] In the tractor, it is preferable that the cutout is disposed in a front portion of the bonnet, and the front portion of the bonnet is configured such that the length in the vehicle width direction decreases from the rear end to the front end.

[0014] As a result, the front end surface of the headlight is inclined to follow the tapered front part of the bonnet, so it is easy to reduce the amount of protrusion of the headlight from the bonnet, and therefore it is possible to make it difficult for the headlight to come into contact with objects around the tractor while the tractor is traveling.

[0015] In the above-mentioned tractor, when the tractor is turned with a minimum radius, it is preferable that the turning trajectory traced by the outer end surface and the front end surface of the headlight in the vehicle width direction is located on the inner side closer to the turning center than the turning trajectory of the frontmost end portion of the body.

[0016] This prevents the headlights from moving along the outermost periphery of the tractor when the tractor is turning, making it possible to reduce the likelihood of the headlights coming into contact with objects around the tractor. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a left side view of a tractor according to an embodiment of the present invention. [Diagram 2] A side view of the front part of the running body. [Diagram 3] FIG. [Figure 4] 4 is a cross-sectional view of the bonnet taken along line AA in FIG. 3 . [Diagram 5] FIG. [Figure 6] Front view of the headlight. [Figure 7] FIG. 4 is a partial cross-sectional view of a portion where a decorative member is attached in a headlamp. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Next, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a left side view of a tractor 1 according to one embodiment of the present invention. In the following description, the left side relative to the forward direction of the tractor 1 will be referred to as "left" and the right side will be referred to as "right". The left-right direction corresponds to the vehicle width direction of the tractor 1.

[0019] As shown in Fig. 1, the tractor 1 is equipped with a traveling machine body (machine body) 5 composed of a machine body frame 3 and the like. The traveling machine body 5 is supported by left and right front wheels 7 and left and right rear wheels 9. The traveling machine body 5 is configured so that a working machine can be detachably attached to the rear part. As the working machine, for example, various working machines such as a cultivator, plow, fertilizer applicator, grass cutter, seed sower, etc. can be selected.

[0020] A bonnet 11 is disposed at the front of the traveling body 5 of the tractor 1 (at the front of the body). The bonnet 11 is provided so as to be openable and closable so that the inside can be exposed. An engine 12 serving as a drive source and the like are disposed inside the bonnet 11. In this embodiment, the engine 12 is configured as a diesel engine, but may be another type of engine.

[0021] A headlamp 21 is provided at the front of the bonnet 11. The detailed configuration of the headlamp 21 will be described later.

[0022] An attachment bracket 13 is provided at the front end of the vehicle frame 3. A front weight (not shown) can be attached and detached to the attachment bracket 13. The front end of the attachment bracket 13 is located forward of the front end 51 of the bonnet 11. Therefore, the front end of the attachment bracket 13 or the front weight attached to the attachment bracket 13 can form the foremost end of the traveling vehicle body 5. The attachment bracket 13 can also be omitted. In this case, the front end 51 of the bonnet 11 forms the foremost end of the traveling vehicle body 5.

[0023] A driver's section 15 of the tractor 1 is disposed behind the bonnet 11. The driver's section 15 is equipped with a driver's seat 17 and a steering wheel 19. A driver of the tractor 1 can sit in the driver's seat 17. The steering wheel 19 is disposed in front of the driver's seat 17. The driver can perform driving operations and the like of the tractor 1 using operating tools provided in the vicinity of the driver's seat 17 and the steering wheel 19.

[0024] In the tractor 1, an engine 12 inside a bonnet 11 generates power. In response to driving operations by the driver, this power is transmitted to rear wheels 9, or to rear wheels 9 and front wheels 7, via a transmission case (not shown) or the like located behind the engine 12. This allows the tractor 1 to travel. When the tractor 1 is traveling, the tractor 1 can be turned to the left or right by operating the steering handle 19. As a result, the traveling direction of the tractor 1 can be changed.

[0025] Next, the headlights 21 provided on the bonnet 11 will be described with reference to Fig. 2, Fig. 3, and Fig. 4. Fig. 2 is a side view of the front part of the traveling body 5. Fig. 3 is a front view of the front part of the traveling body 5. Fig. 4 is a plan view of the front part of the traveling body 5.

[0026] The headlights 21 can illuminate the area in front of the bonnet 11 (in front of the traveling body 5). As shown in Fig. 2, Fig. 3, and Fig. 4, the headlights 21 are provided on both the left and right sides of the front part of the bonnet 11. In detail, a cutout portion 23 is provided on both the left and right sides of the front part of the bonnet 11. The left and right cutout portions 23 are respectively disposed in the vertical middle parts of the bonnet 11 on both the left and right sides of the front part of the bonnet 11.

[0027] The left and right cutouts 23 are formed by cutting out the left and right side surfaces of the front of the bonnet 11 so that they open forward and to the side, respectively, and extend in the front-to-rear direction in a side view. Each cutout 23 is formed so that its vertical length becomes smaller from the front end of the bonnet 11 toward the rear. Thus, each cutout 23 opens more toward the front.

[0028] The bonnet 11 is formed long and thin, and is arranged so that its longitudinal direction is the front-rear direction. The bonnet 11, in a portion above the upper ends of the front wheels 7, defines the outermost end in the vehicle width direction of the front part of the traveling body 5 and also defines the front end of the traveling body 5. The front part of the bonnet 11 (particularly the upper part 11a above the cutout portion 23) is formed so that the length in the vehicle width direction decreases from the rear end to the front end in a plan view. Specifically, when the front end 51 of the bonnet 11 is called the tip, the front part of the bonnet 11 is formed so as to be tapered in a plan view as shown in FIG. 4.

[0029] The headlights 21 are provided so as to protrude outward in the vehicle width direction from the left and right cutouts 23. The headlights 21 are arranged so that at least a portion of them is exposed to the outside of the bonnet 11 through the cutouts 23. The front part of the traveling body 5 on which the headlights 21 are provided is configured substantially symmetrically, so the following mainly describes the configuration of the left side of the front part of the traveling body 5.

[0030] Next, the headlamp 21 will be described with reference to Fig. 2 to Fig. 6. Fig. 5 is a perspective view of the headlamp 21. Fig. 6 is a front view of the headlamp 21.

[0031] The headlamp 21 is fixed to the bonnet 11 in a state where it is provided in the notch 23. To be more specific, an attachment portion 35 is provided on the housing 25 side of the headlamp 21. A bonnet 11-side attachment portion (not shown) is provided around the notch 23 of the bonnet 11. The headlamp 21 is attached to the bonnet 11 via the attachment portion 35 on the headlamp 21 side and the attachment portion on the bonnet 11 side. As shown in Figs. 2 to 4, the headlamp 21 is disposed so as to be able to illuminate the area ahead of the traveling vehicle body 5. In addition, the outermost end of the headlamp 21 in the vehicle width direction is disposed closer to the vehicle width center than the outermost end of the front part of the bonnet 11 in the vehicle width direction.

[0032] The headlamp 21 comprises a housing 25, a decorative member 27, and a bulb 29.

[0033] Housing 25 is attached to bonnet 11 so as to fit into cutout 23. As shown in Figures 5 and 6, housing 25 has a main body 31 having a shape corresponding to cutout 23, and a recess 33 that opens forward. Main body 31 is formed so as to be able to close cutout 23. Recess 33 is provided at the front end of main body 31 over an appropriate length in the vehicle width direction.

[0034] The housing 25 defines the outer shape of the headlamp 21. Therefore, the outermost end of the housing 25 located furthest outward in the vehicle width direction coincides with the outermost end of the headlamp 21 located furthest outward in the vehicle width direction.

[0035] Here, consider a cross section of the bonnet 11 cut by an imaginary horizontal plane located at the height of the upper end 21b of the headlamp 21. As shown in Fig. 4, the outer end surface 21a in the vehicle width direction of the headlamp 21 is disposed inward in the vehicle width direction by a length L1 from the outermost end (first end 37) in the vehicle width direction of the bonnet 11 in this cross section.

[0036] Similarly, the front end surface 21c of the headlamp 21 is disposed on the inner side in the vehicle width direction than the outermost end (first end 37) in the vehicle width direction of the bonnet 11 in the above cross section.

[0037] Furthermore, the front end 21d of the headlamp 21 is disposed rearward of the second end 38, which is the front end of the mounting bracket 13, by a length L2.

[0038] In this embodiment, the front end surface of the headlamp 21 is inclined forward from the outer side toward the center in the vehicle width direction. Therefore, most of the inside of the recess 33 of the housing 25 of the headlamp 21 is visible even from the left side of the traveling body 5.

[0039] The decorative member 27 is attached to the front of the housing 25. The decorative member 27 is disposed inside the recess 33 of the housing 25 so that its front end is located rearward of the center of the housing 25 in the left-right direction. The decorative member 27 is formed in a tubular shape. In this embodiment, the decorative member 27 is formed in a cylindrical shape having a curved surface on the outer periphery. The decorative member 27 is disposed so that its axial direction is approximately along the front-rear direction.

[0040] In this embodiment, decorative member 27 is assembled to housing 25 with a spigot-joint structure, as shown in Fig. 7. Decorative member 27 is fixed to housing 25 by fitting rear end 41 into protrusion 43 provided on the bottom side of recess 33 of housing 25 and fastening a part of decorative member 27 to housing 25 with fastening members 45 such as screws. By employing such a spigot-joint structure, it is possible to prevent decorative member 27 from shifting in position relative to housing 25 during assembly.

[0041] The bulb 29 is attached to the housing 25. The bulb 29 is arranged so that its front part is exposed toward the front of the traveling body 5. The bulb 29 is also arranged inside the decorative member 27. The bulb 29 can generate light. The bulb 29 is composed of any type of light source. Examples of the light source include a halogen lamp or an HID lamp.

[0042] The front part of the bulb 29 is disposed inside the recess 33 of the housing 25 with its periphery covered by the decorative member 27. The front part of the bulb 29 is disposed inside the recess 33 of the housing 25 and near the center of the recess 33. In addition, the front end of the bulb 29 is disposed rearward of the front end of the decorative member 27. In other words, the bulb 29 is disposed so as not to protrude outward (forward) from the decorative member 27 and thus from the housing 25.

[0043] With this configuration, when the bulb 29 generates light, the light from the bulb 29 passes through the inside front part of the decorative member 27 and is then irradiated forward of the housing 25. Therefore, the left and right headlights 21 can each illuminate the front of the bonnet 11. Also, the left and right headlights 21 can each achieve their own illumination function while improving the design.

[0044] Next, a description will be given of a case where the tractor 1 turns. In the following, a case where the tractor 1 turns to the right will be described as an example, but the same applies to a case where the tractor 1 turns to the left.

[0045] The tractor 1 can turn left or right in response to the operation of the steering wheel 19. When the steering wheel 19 is turned to the limit to turn the tractor 1 to the right, as shown in Fig. 4, a first turning locus t1 drawn by the outermost turning portion of the left headlight 21 is located on the inner side closer to the turning center than a second turning locus t2 drawn by the outermost turning portion (i.e., the left end portion of the front surface) 39 of the mounting bracket 13.

[0046] In addition, if the mounting bracket 13 is not provided at the front end of the tractor 1, the front end of the traveling body 5 becomes the front end 51 of the bonnet 11. In this case, the first turning trajectory t1 is located on the inner side closer to the turning center than the third turning trajectory t3 drawn by the front end 51 of the bonnet 11.

[0047] As a result, the headlights 21 do not pass through the outermost periphery of the tractor 1 when the tractor 1 turns. This reduces the risk to the driver of the tractor 1 that the headlights 21 will come into contact with objects around the tractor 1. This allows the driver to quickly turn the tractor 1.

[0048] Examples of objects around the tractor 1 include pillars of a greenhouse when work is being performed inside the greenhouse using the tractor 1, and electric poles on the side of a farm field (a relatively narrow field) when work is being performed on the edge of the field using the tractor 1.

[0049] As described above, the tractor 1 of this embodiment includes the bonnet 11 and the headlights 21. The bonnet 11 is provided at the front of the traveling body 5, and has the notches 23 on both sides in the vehicle width direction. The headlights 21 are provided in each of the notches 23. The outer end surface 21a and the front end surface 21c of the headlights 21 are disposed inward in the vehicle width direction from the outermost end (first end 37) of the bonnet 11 in the vehicle width direction at the height position of the upper end 21b of the headlights 21.

[0050] This allows the headlights 21 to be moved so that, when the tractor 1 turns, the headlights 21 do not pass the outermost periphery of the tractor 1. Therefore, when the driver of the tractor 1 tries to turn the tractor 1 while working in a greenhouse or on the edge of a field, the driver's fear that the headlights 21 will come into contact with objects around the tractor 1 can be reduced. As a result, it becomes easier to turn the tractor 1, improving workability.

[0051] In the tractor 1 of this embodiment, the front end surface 21c of the headlamp 21 is inclined forward from the outer side in the vehicle width direction toward the center.

[0052] This makes it possible to realize a shape in which the headlights 21 are unlikely to be positioned at the outermost periphery when the tractor 1 turns. Therefore, it is possible to reduce the above-mentioned concerns of the driver when attempting to drive the tractor 1.

[0053] In the tractor 1 of this embodiment, the cutout 23 is disposed in the front part of the bonnet 11. The front part of the bonnet 11 (particularly the upper part 11a above the cutout 23) is configured so that the length in the vehicle width direction decreases from the rear end to the front end.

[0054] As a result, the front end surface 21c of the headlamp 21 is inclined so as to fit along the front portion of the tapered bonnet 11, making it possible to reduce the amount of protrusion of the headlamp 21 from the bonnet 11. Therefore, it is possible to make it difficult for the headlamp 21 to come into contact with objects around the tractor 1 while the tractor 1 is traveling.

[0055] In addition, when the tractor 1 of this embodiment is turned with a minimum radius, the first turning trajectory t1 traced by the vehicle widthwise outer end face 21a and the front end face 21c of the headlight 21 is located on the inner side closer to the turning center than the second turning trajectory t2 traced by the front end portion (mounting bracket 13) of the running body 5.

[0056] As a result, when the tractor 1 turns, the headlights 21 do not move along the outermost periphery of the tractor 1. Therefore, it is possible to make it difficult for the headlights 21 to come into contact with objects around the tractor 1 at this time.

[0057] Although the preferred embodiment of the present invention has been described above, the above configuration can be modified, for example, as follows.

[0058] There is no particular limitation on the configuration of the headlamp 21. For example, in the above embodiment, the headlamp 21 is configured to directly expose the bulb 29 to the outside, but the bulb 29 may be covered with a headlamp cover that is light-transmitting, so that the bulb 29 is not directly exposed to the outside.

[0059] In the above embodiment, the front end surface 21c of the headlamp 21 is inclined so as to follow the tapered front portion of the bonnet 11. However, the direction of the front end surface 21c is arbitrary. For example, the front end surface 21c may be configured as a surface perpendicular to the front-rear direction.

[0060] The shape of the bonnet 11 (including the shape of the cutout portion 23) is also arbitrary and can be changed into various shapes.

[0061] Obviously many modifications and variations of the present invention are possible in light of the above teachings, and it is therefore to be understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein. [Explanation of symbols]

[0062] 1 Tractor 5 Running body (body) 11 Bonnet 11a Upper part 13 Mounting bracket 21 Headlight 21a Outer end surface in the vehicle width direction 21b Top end 21c Front end surface 23 Cutting section 37 First end (the outermost end of the bonnet in the vehicle width direction at the height position of the top end of the headlight) t1 First turning trajectory (the turning trajectory drawn by the outer end surface and front end surface of the headlight in the vehicle width direction) t2 Second turning trajectory (turning trajectory of the front end of the aircraft)

Claims

[Claim 1] A bonnet provided at the front of the body and having cutouts on both sides in a vehicle width direction; A headlamp provided in each of the cutouts; Equipped with A tractor, characterized in that the vehicle width outer end surface and front end surface of the headlight are positioned on the vehicle width inner side of the vehicle width outermost end of the bonnet at the height position of the upper end of the headlight.

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