JP4442919B2 - Headlamp unit for work vehicle - Google Patents

Description

  The present invention relates to a work vehicle headlamp unit mounted on a front portion of a work vehicle such as a tractor.

In general, a work vehicle such as a tractor includes a headlamp unit at the front of the body. This type of headlamp unit usually includes a resin-molded housing, a front illumination bulb, a reflector that reflects the illumination light of the bulb forward, and a reflector and a lens that covers the front of the bulb. It is comprised and is mounted | worn with the front part of a working vehicle (for example, refer patent documents 1-4).
Japanese Utility Model Publication No. 61-153651 JP 2000-79858 A JP 2003-7106 A JP 2003-300440 A

  However, conventionally, since the headlamp unit was individually manufactured according to the model to be mounted, there was a problem that the headlamp unit could not be manufactured at low cost. In particular, the housing that is the base of the headlamp unit is a large molded product that is integrally molded with resin. If this is individually manufactured according to the model, the mold cost alone will be enormous.

The present invention was created to solve these problems in view of the above circumstances, and is configured by assembling a front irradiation bulb, a reflector, and a lens to a housing that is a base of a unit. In the headlamp unit mounted on the front part of the work vehicle, the housing is constituted by a housing piece divided into left and right, and these housing pieces are integrally joined or separated into left and right In the state, when being attached to the front portion of the work vehicle , in the integrally coupled state, the coupling pieces formed so as to protrude in the directions of each other at the inner ends of the left and right housing pieces are superposed back and forth. The left and right housing pieces are joined together by tightening bolts, and the center cover superimposed on the front side of the joined piece is attached to the headlamp unit. A headlight unit for a work vehicle, characterized by being configured such that a constant.
If comprised in this way, it will become possible to make a headlamp unit common between models, and to reduce the manufacturing cost significantly. For example, in some models, the housing piece is attached to the front part of the vehicle in an integrally connected state, and in larger models, the housing piece can be attached to the front part of the vehicle with the left and right parts separated. it can.

  Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a traveling body of a tractor. The traveling body 1 includes an engine (not shown) mounted on a front portion of the body, a transmission 2 for shifting the power generated by the engine, and the transmission 2. The vehicle includes a front wheel 3 and a rear wheel 4 that are driven by traveling power supplied from the vehicle, a resin body cover 5 that covers the body, and a driver seat 6 that is provided above the rear portion of the body cover 5. Further, an arbitrary work machine is mounted on the rear part of the machine body, and power is also supplied to this work machine.

  The body cover 5 includes a front panel 7 attached to the front end of the body, an openable / closable bonnet 8 covering the upper part of the engine room, a side cover 9 covering the left and right sides of the engine room, and a main part covering the upper rear part of the body. A cover 10 and a handle post cover 11 that covers the steering shaft and the like are provided. The present invention is characterized by the front panel 7, and the front panel 7 will be described below with reference to FIGS.

  As shown in these drawings, the front panel 7 includes a headlamp unit 12 that constitutes the upper part of the panel and a front grill 13 that constitutes the lower part of the panel, and each is individually manufactured. In this case, the mold cost can be reduced because the mold can be downsized as compared with the case where the entire front panel is integrally molded.

  The front grill 13 is formed in a square shape in plan view, and a plurality of openings 13a for introducing engine cooling air are formed on the front surface thereof. In addition, a pair of engaging protrusions 13b are provided on the left and right sides of the lower end portion of the front grill 13 so as to protrude from each other at a predetermined interval.

  The headlamp unit 12 is formed in a square shape in plan view, like the front grill 13, and includes a housing 14, a front illumination bulb 15, a headlamp socket 16, a headlamp reflector 17, and side illumination. And a side lighting socket 18 (not shown), a side lighting reflector 18, a lens 19 and a center cover 20.

  The housing 14 includes a pair of left and right headlamp housing recesses 14a for housing a front illumination bulb 15, a headlamp socket 16, and a headlamp reflector 17, and a socket mounting hole 14b formed at the bottom thereof. A pair of left and right side lamp housing recesses 14c for housing a side illumination bulb, a side lamp socket, and a side lamp reflector 18, a socket mounting hole 14d formed in the bottom thereof, and downward from the lower end. A plurality of connecting pieces 14e protruding and a flange piece 14f protruding rearward from the upper end portion are provided.

  The headlamp reflector 17 has a socket fitting hole 17a at the bottom, and is incorporated into the side lamp housing recess 14c from the front. The front illumination bulb 15 is mounted on the headlight socket 16, and the headlight socket 16 is fitted into the socket fitting hole 17a of the headlight reflector 17 from the rear through the socket mounting hole 14b. Assembled. The side illumination bulb, the side illumination socket, and the side illumination reflector 18 are also incorporated into the side illumination housing recess 14c in the same procedure.

  The lens 19 is also used as a headlight lens and a sidelight lens. Specifically, the lens 19 of the present embodiment is made of a translucent resin member having an L-shape in plan view, and is assembled to the housing 14 from the front, whereby the headlight reflector 17 and the sidelight reflector 18 are assembled. It is designed to cover the front.

  Next, the housing 14 will be described in detail. The housing 14 is composed of housing pieces 14L and 14R divided into left and right. These housing pieces 14L and 14R are attached to the front part of the body in a state where they are integrally joined or separated into left and right. As a result, not only can the mold be further miniaturized, but the headlamp unit 12 can be made common among the models, and the manufacturing cost can be greatly reduced. In other words, in some models, the housing pieces 14L and 14R are attached to the front of the vehicle in a state of being integrally joined, and in larger models having a wider front part width, the housing pieces 14L and 14R are moved to the left and right. By attaching to the front part of the vehicle in a separated state, the headlamp unit 12 can be shared.

  More specifically, the left housing piece 14L is formed with a left headlight housing recess 14a and a side headlight housing recess 14c, and the right housing piece 14R is formed with a right headlight housing recess 14a and A side lamp housing recess 14c is formed. Moreover, the coupling piece 14g which protrudes in a mutual direction is formed in the inner end part of each housing piece 14L, 14R. Then, the right and left housing pieces 14L and 14R are integrally coupled by superimposing the coupling pieces 14g of the housing pieces 14L and 14R back and forth and tightening the bolts 21 penetrating them. The center cover 20 is polymerized on the front side of the joined piece 14g and fixed to the headlamp unit 12 by a bolt 22 screwed from the back side of the joined piece 14g. If it does in this way, even if the housing 14 is divided | segmented into right and left, the coupling | bond part of housing pieces 14L and 14R will be covered with the center cover 20, and it will become a favorable external appearance.

  The headlamp unit 12 and the front grill 13 configured as described above are integrally connected in advance, and are detachably attached to the front portion of the vehicle. Specifically, the headlamp unit 12 and the front grille 13 are integrally joined in advance by superimposing the connecting piece 14e of the headlamp unit 12 on the back surface of the upper end of the front grille 13 and screwing the bolts 23 there. Let In this way, since the front panel 7 can be handled as an integrated object when being attached to and detached from the vehicle, the headlamp unit 12 and the front grill 13 are separately provided for maintenance of the battery B disposed at the front end of the engine room. Compared with the case where it removes, maintenance property can be improved. In addition, since the housing pieces 14L and 14R divided into the left and right are integrally connected via the front grill 13, the coupling strength of the housing pieces 14L and 14R can be increased.

  In order to attach and detach the front panel 7, a pair of left and right engaging pins 24, a front panel bracket 25, and a pair of left and right knob bolts 26 screwed into the front panel 7 are provided at the front end of the traveling machine body 1. The engagement pin 24 protrudes in the left-right direction from a plate 27 provided on the chassis 1 a of the traveling machine body 1, and the position thereof corresponds to the engagement protrusion 13 b of the front grill 13.

  The front panel bracket 25 is provided integrally with a stay 29 extending from the air cleaner mounting bracket 28, and its position corresponds to the flange piece 14 f of the headlamp unit 12. Incidentally, the air cleaner mounting bracket 28 is an existing member supported by the chassis 1 a and the radiator mounting bracket 31 via the stay 30.

  When the front panel 7 is mounted on the front of the machine body, first, the left and right engagement protrusions 13b protruding from the lower end of the front panel 7 are engaged with the engagement pins 24 on the machine body from above. Next, the flange piece 14f formed on the upper end portion of the front panel 7 is aligned with the front panel bracket 25 on the airframe side, and the left and right groove portions 14h formed on the flange piece 14f are engaged with the knob bolt 26. When the knob bolt 26 is screwed in, the flange piece 14f is sandwiched between the knob bolt 26 and the front panel bracket 25, and the front panel 7 is integrally fixed to the body. Further, the front panel 7 can be removed in the reverse procedure. In either case, the front panel 7 is handled as an integral object.

  14 and 15 show a state in which the headlamp unit 12 is attached to the crawler tractor 100 larger than the tractor 1 shown in FIG. Since the crawler tractor 100 has a base end front end width wider than that of the tractor 1, the crawler tractor 100 separates the housing pieces 14 </ b> L and 14 </ b> R to the left and right, and both the housing pieces 14 </ b> L and 14 </ b> R are formed wider than the center cover 20. It is connected through a cover 101. Further, in this embodiment, the front grill 102 is provided on the upper side of the headlamp unit 12, but also in this case, the front grill 102 and the headlamp unit 12 are connected in advance, and the front panel 103 is handled as an integrated object. be able to. If it does in this way, even if it separates housing pieces 14L and 14R into right and left, housing pieces 14L and 14R will be combined via front grille 102, and the joint strength will be raised.

  The headlamp unit 12 according to the present embodiment configured as described is configured by assembling a housing 14 with a front illumination bulb 15, a headlamp reflector 17, and a lens 19, and is mounted on the front of the vehicle. However, the housing 14 is constituted by housing pieces 14L and 14R divided into left and right, and these housing pieces 14L and 14R are integrally coupled or separated in the left and right, Therefore, the headlamp unit 12 can be shared among the models, and the manufacturing cost can be greatly reduced. That is, in some models, the housing pieces 14L and 14R are attached to the front of the vehicle in an integrally coupled state. In larger models, the housing pieces 14L and 14R are separated in the left and right directions. Can be attached to the part.

  The front panel 7 includes a headlamp unit 12 and a front grill 13 which are separately formed. The front panel 7 and the front grill 13 are combined in advance to form an integrated front panel 7. Since the integrated front panel 7 is detachably attached to the front portion of the vehicle, the detachability of the front panel 7 can be reduced compared to the case where the headlamp unit 12 and the front grill 13 are separately attached and detached. And the maintenance of the battery B and the like becomes easy.

It is a side view of a tractor. It is a front view of the airframe front part which shows the mounting state of a front panel. It is a side view of the front part of an airframe which shows the wearing state of a front panel. It is a front view of a front panel. It is a rear view of a front panel. It is a top view of a front panel. It is a side view of a front panel. It is XX sectional drawing of a front panel. It is a perspective view of a front panel. It is a front perspective view which shows the decomposition | disassembly state of a front panel. It is a back perspective view which shows the decomposition | disassembly state of a front panel. It is a disassembled perspective view of a headlamp unit. It is sectional drawing of a headlamp part. It is a front view of a crawler tractor. It is a side view of a crawler tractor.

Explanation of symbols

1 Driving body (tractor)
7 Front panel 12 Headlamp unit 13 Front grille 13b Engagement protrusion 14L Housing piece 14R Housing piece 14e Connection piece 14f Flange piece 14g Connection piece 15 Front irradiation bulb 17 Headlight reflector 19 Lens 20 Center cover 24 Engagement pin 25 Front panel bracket 26 Knob bolt 100 Crawler tractor 101 Center cover 102 Front grill 103 Front panel B Battery

Claims (1)

In a headlamp unit that is constructed by assembling a front irradiation bulb, reflector, and lens to a housing that is the base of the unit, and that is mounted on the front part of a work vehicle, the housing is composed of a housing piece divided into left and right In addition, when these housing pieces are attached to the front part of the work vehicle in a state where they are integrally joined or separated into left and right, The connecting pieces formed so as to protrude in the direction of each other at the ends are overlapped in the front and rear, and the left and right housing pieces are integrally connected by tightening the bolts, and the center cover superposed on the front side of the connecting pieces is a headlamp. A headlamp unit for a work vehicle characterized by being configured to be fixed to the unit.

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