JP2016084053A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure to which a side marker lamp or a direction indicator can be easily attached, and which allows a support member of the side marker lamp or the direction indicator to have a simple structure obtained inexpensively.SOLUTION: A tractor 1 has an attachment structure of a lamp 50 which is attached to an assist bar 35 serving as a bar-like member provided to project from a cabin 20 covering a drive operation part 10 of the tractor. A bracket 40 for supporting a lamp 50 has a hollow structure, and fixation parts 41a, 42a fixed to the bar-like member are formed on one end of the bracket and lamp attachment parts 41c, 42c are formed on the other end.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an attachment structure for a lamp attached to a work vehicle. In particular, the present invention relates to a mounting structure of a vehicle width lamp or a direction indicator that indicates both the left and right sides of the aircraft.

  Conventionally, a technique for attaching a work lamp to a cabin column covering a driving operation unit of a tractor via a support member such as a stay has been disclosed (see Patent Document 1).

  The support stay for attaching the work lamp has a configuration in which a steel plate is bent and formed in an L-shape, protrudes forward from a frame constituting the cabin, and the work lamp is attached to the support stay with a bolt or the like. Further, the direction indicator is attached to the lower side surface of the rear pillar constituting the cabin via a support stay or the like.

JP 2003-175860 A

As described above, since the direction indicator is attached with a bolt or the like via the support stay, the attachment position cannot be finely adjusted, and a screw hole for attaching to the rear pillar is required.
It is an object of the present invention to provide a mounting structure in which a vehicle width light or a direction indicator can be easily attached, a support member for the vehicle width light or a direction indicator can be obtained at a low cost with a simple structure, and wiring is not exposed. It is said.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  The invention according to claim 1 is an attachment configuration of a lamp attached to a rod-like member provided so as to protrude from a cabin that covers a driving operation portion of a work vehicle, and a bracket that supports the lamp has a hollow structure at one end. A fixing portion to the rod-shaped member is formed, and a lamp mounting portion is formed at the other end.

  According to a second aspect of the present invention, the bracket is formed with a shielding portion that blocks light emission to the driver's seat side.

  According to a third aspect of the present invention, the rod-shaped member is a tubular assist bar attached to a front strut constituting a cabin, the bracket is a half structure, and the fixing portion of the bracket is clamped and fixed to the assist bar. Is.

As effects of the present invention, the following effects can be obtained.
That is, it is possible to attach a lamp such as a vehicle width lamp or a direction indicator with a simple configuration made of resin or the like, and it is possible to easily assemble and reduce costs. And since it can wire in the hollow structure of a bracket, it can prevent that a wire gets entangled or is caught and disconnected.

The perspective view of a working vehicle. The side view of a work vehicle. The front view of a work vehicle. The perspective view which attached the compound lamp to the assist bar. The side view which attached the compound lamp to the assist bar. The perspective view which removed a part of bracket which attaches a compound lamp. The disassembled perspective view of the bracket which attaches a compound lamp.

  The technical idea of the present invention can be applied to agricultural work vehicles, construction work vehicles, and the like. In the present application, description will be made using a tractor which is a typical work vehicle.

First, the overall configuration of the tractor 1 will be described.
1, 2, and 3, an engine 3 placed on a front frame 12 is installed in the bonnet 2, and a transmission case 6 is connected to a rear portion of the engine via a clutch housing 14. Rear axle cases 8 and 8 are supported on the left and right sides of the case 6.

  The rear axle cases 8 and 8 support an axle, and support rear wheels 19 and 19 on the axle. A front axle case 7 is supported at a lower portion of the front frame 12, and front wheels 18 and 18 are supported on both sides of the front axle case 7 via axles. The front wheels 18 and 18 are steered left and right as the steering handle 4 rotates. The front wheels 18 and 18 and the rear wheels 19 and 19 are configured such that power from the engine 3 is transmitted to the front wheels 18 and 18 and the rear wheels 19 and 19 via a transmission in the mission case 6 so as to be able to travel.

  A cabin 20 is disposed on the clutch housing 14 and the transmission case 6 at the rear of the bonnet 2, and a steering handle 4, a driver seat 5, an operation lever such as a main transmission lever, an auxiliary transmission linkage bar, an operation lever, and a PTO transmission lever. A driving operation unit 10 including an operation pedal such as a brake pedal and a clutch pedal, an operation panel, a light switch, an accelerator lever, and the like disposed on the dashboard 13 that supports the steering handle 4 is disposed in the cabin 20. And is covered by the cabin 20.

  A step 15 is provided on the side of the clutch housing 14 so that an operator can easily get on the floor 16 in the cabin 20 between the driver's seat 5 and the dashboard 13.

  The cabin 20 includes left and right front columns 21 and 21, left and right rear columns 22 and 22, a roof 23, a front glass 24, a rear glass, left and right doors 25 and 25, and the like. The front struts 21 and 21 are erected from the left and right front ends of the floor 16, and the rear struts 22 and 22 are erected from the rear portions of the fenders 17 and 17 that cover the rear wheels 19 and 19. The roof 23 is connected and fixed on a roof frame (not shown) in which the upper ends of the front columns 21 and 21 and the rear columns 22 and 22 are connected, and an air conditioner and the like are housed in the roof 23. The front glass 24 is disposed in a space surrounded by the left and right front columns 21, 21, the front part of the roof frame, and the bonnet 2. The rear glass is disposed in a space surrounded by a connecting frame that connects the left and right rear columns 22, 22, the roof frame, and the left and right fenders 17, 17. The rear glass is configured to be openable and closable rearward with the upper portion as a fulcrum. The left and right doors 25, 25 are arranged in a space surrounded by the front column 21, the rear column 22, the roof frame, and the fender 17, and can be opened and closed to the left and right outer sides with the rear part as a fulcrum.

  .. Are disposed on the left and right sides of the front roof frame, and rear work lights 32, 32... Are disposed on the left and right sides of the rear roof frame. Rear mirrors 34 and 34 are attached to the upper portions of the front struts 21 and 21 through support arms 33 and 33 so as to protrude laterally. In addition, assist bars 35 and 35 are attached to the lower part of the front struts 21 and 21 from the middle part to the lower part, and the lamp 50 is attached to the assist bar 35 via a bracket 40 described later. A rear direction indicator 36 is mounted on the rear part of the fenders 17.

  The assist bars 35 and 35 are formed by bending a hollow steel pipe into a substantially “U” shape in a front view and a side view, and projecting diagonally forward from the side of the front struts 21 and 21. In this way, when the operator gets into the cabin 20 or gets off the vehicle, the operator holds the assist bar 35 to support the body and can easily get on and off by stepping on the step 15.

Next, the lamp 50 will be described with reference to FIGS.
The lamp 50 includes a direction indicator 51, a vehicle width lamp 52, and a work lamp 53. The lamp 50 is attached to the assist bar 35 via the bracket 40. However, the lamp 50 may be provided with at least one of the direction indicator 51, the vehicle width lamp 52, and the work lamp 53. Even when the two are integrally attached to the bracket 40, the bracket 40 is separately provided. It may be configured to be attached via. The light sources of the direction indicator 51, the vehicle width lamp 52, and the work lamp 53 may be light bulbs or LEDs, and are not limited.

In the present embodiment, the direction indicator 51 is disposed on the upper side of the vehicle width lamp 52 and is housed in one lamp case 56. The work lamp 53 is disposed above the direction indicator 51 via the support stay 54 and the adjustment member 55. However, the direction indicator 51, the vehicle width lamp 52, and the work lamp 53 are not limited in the vertical arrangement, and may be arranged in the horizontal direction, and the arrangement positions thereof are not limited.
The support stay 54 is fixed to the upper surface of the lamp case 56. The adjusting member 55 is configured to be rotatable up and down and left and right so that the irradiation direction of the work lamp 53 can be adjusted up and down and left and right.

  The bracket 40 is divided into left and right halves, and fixed portions 41a and 42a to the assist bar 35 serving as a rod-shaped member are formed at one end, and mounting portions 41c and 42c of the lamp 50 are formed at the other end. Further, a shielding portion 43 that blocks light emitted to the driver's seat side is formed on one of the half brackets 40.

  That is, the bracket 40 has a substantially T-shaped box shape when viewed from the side, and includes an inner frame body 41 and an outer frame body that are divided into left and right halves, and can be easily obtained by injection molding using synthetic resin or metal. I am doing so. Each of the inner frame body 41 and the outer frame body 42 is formed in a concave shape in which the opposite side and the front side are opened, and a hollow structure is formed so that a space is formed inside when combined, and this space is a space for wiring. As shown in FIG. 6, the assist bar 35 made of a tubular body communicates with a wiring hole 35a opened at the front surface of the middle part of the upper and lower sides. The inner space of the assist bar 35 formed in a tubular shape communicates with the inner space of the front support 21 at the upper end, and the wiring 57 of the direction indicator 51, the vehicle width lamp 52, and the work lamp 53 is connected to the space of the bracket 40. In addition, it can be connected to an operation switch, a power source, and the like disposed in the vicinity of the dashboard 13 together with the wiring connected to the front upper work lamp 31 from the wiring passage formed by the internal space of the assist bar 35 and the internal space of the front column 21. I am doing so.

  Then, semicircular cutouts are formed on the base (rear) side which is one end of the inner frame body 41 and the outer frame body 42 to form the fixing portions 41a and 42a. The fixing portions 41a and 42a are shaped to match the outer shape of the assist bar 35 so that the fixing portion 41a of the inner frame body 41 and the fixing portion 42a of the outer frame body 42 are fixed at predetermined positions of the assist bar 35 from both left and right sides. I have to. In the present embodiment, screw holes 41b and 41b are opened in the inner frame body 41 and screwed into mounting bosses provided in the outer frame body 42 with screws. However, the fixing portions 41a and 42a can also have a personality in which a support arm 33 that supports the rearview mirror 34 is extended downward to be clamped and fixed to the support arm 33. Can be attached to this rod-shaped body. Further, the fixing method is not limited because it is possible to hold and fix using left and right stays or the like.

  The front side, which is the other end side of the inner frame body 41 and the outer frame body 42, serves as attachment portions 41 c and 42 c for attaching the lamp case 56. The mounting portions 41c and 42c are shaped to match the outer shape of the lamp case 56. When the inner frame body 41 and the outer frame body 42 are aligned from the left and right, the lamp case 56 is fitted into the mounting portions 41c and 42c, and screws are attached from above and below. It can be fixed with etc. However, when the inner frame body 41 and the outer frame body 42 are attached to the horizontal portion of the assist bar 35, they can be divided vertically.

  Further, a plate-shaped shielding portion 43 is extended forward from the front end of the inner frame body 41 so as to cover the left and right inner side surfaces of the lamp case 56. That is, the shielding portion 43 is formed integrally with the inner frame body 41 so that light emitted from the direction indicator 51 and the vehicle width lamp 52 is not irradiated to the driver's seat 5 side in the body direction. However, the shielding part 43 can also be configured to extend to the side part of the upper work lamp 53. With this configuration, when the direction indicator 51 or the vehicle width lamp 52 is turned on, the light does not directly enter the eyes of the operator seated in the driver's seat 5 and is dazzling and obstructs the forward field of view. This can be prevented.

  As described above, the lamp 50 is attached to the assist bar 35 that is a bar-like member provided so as to protrude from the cabin 20 that covers the driving operation unit 10 of the tractor 1 that is a work vehicle, and the lamp 50 is supported. The bracket 40 to be formed has a hollow structure, and fixed portions 41a and 42a to rod-shaped members are formed at one end, and lamp mounting portions 41c and 42c are formed at the other end. Further, the lamp 50 such as the vehicle width lamp 52 or the direction indicator 51 can be attached, the assembly can be easily performed, and the cost can be reduced. And since it can wire in the hollow structure of the bracket 40, it can prevent that a wire gets entangled or is caught and disconnected.

  Further, since one inner frame body 41 of the half bracket 40 is formed with a shielding portion 43 that blocks light emission toward the driver's seat 5, the light from the lamp 50 can directly enter the eyes of the operator. In addition, it reduces glare and does not adversely affect driving. Moreover, since the shielding part 43 is comprised integrally with the bracket 40, the increase in manufacturing cost can be suppressed to the minimum.

  The rod-shaped member is a tubular assist bar 35 attached to the front strut 21 constituting the cabin 20, the bracket 40 is a half structure, and the fixing portions 41 a and 42 a of the bracket 40 are sandwiched by the assist bar 35. Since it is fixed, the wiring 57 can be housed in the assist bar 35 and the bracket 40 and is not exposed, and the wiring 57 is not hooked and disconnected, and the appearance is clean and the deterioration of the wiring can be prevented. Moreover, since it is the structure attached by the fixing | fixed part 41a * 42a, it can finely adjust up and down.

DESCRIPTION OF SYMBOLS 1 Tractor 10 Driving | operation operation part 20 Cabin 35 Assist bar 40 Bracket 41a * 42a Fixing part 41c * 42c Lamp mounting part 43 Shielding part 50 Lamp 51 Direction indicator 52 Car width lamp 53 Work lamp

Claims (3)

  A mounting structure of a lamp that is attached to a rod-shaped member that protrudes from a cabin that covers a driving operation section of a work vehicle. The bracket that supports the lamp has a hollow structure, and a fixed portion to the rod-shaped member is formed at one end. A work vehicle characterized in that a lamp mounting portion is formed at the other end.   The work vehicle according to claim 1, wherein the bracket is formed with a shielding portion that blocks light emitted to a driver's seat side. 2. The rod-shaped member is a tubular assist bar attached to a front support column constituting a cabin, the bracket is a half structure, and a fixing portion of the bracket is clamped and fixed to the assist bar. The work vehicle as described in.

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