Agricultural tractor

Abstract

The present invention relates to a wiring structure of a work light installed on an agricultural tractor. Provided is an agricultural tractor in which a frame structure of the present invention comprises a plurality of support poles provided so as to extend in the height direction of a cabin, wherein the upper end portion of at least any one support pole among the plurality of support poles is provided with a wiring portion for wiring, from the outside to a boarding space side, an electric wire of an electrical component installed on the outside of the cabin. According to the present invention, by having a structure in which, even when water flows in through a wiring hole exposed to the outside, the water is immediately discharged to the lower side of the support pole, the effect of minimizing the possibility of water entering into the cabin may be achieved.

Description

agricultural tractor

[0001] The present invention relates to an agricultural tractor and concerns the wiring of a work light.

[0002] Agricultural tractors can perform various agricultural tasks such as cultivation, spraying fertilizers and pesticides, harvesting, and transportation.

[0003] Agricultural tractors can perform various types of agricultural tasks by attaching and detaching various implements.

[0004] Working tools include rotary tillers, plows, harrows, loaders, and backhoes.

[0005] Figure 1 illustrates a typical agricultural tractor.

[0006] As illustrated in FIG. 1, an agricultural tractor (T) with a certain horsepower or more has a cabin (C).

[0007] The cabin (C) forms the driver's passenger space and isolates the passenger space from the external environment.

[0008] The cabin (C) consists of a frame structure (FU) and a roof (R).

[0009] The frame structure (FU) forms the framework of the cabin (C).

[0010] The roof (R) covers the upper part of the frame structure (FU) and forms the ceiling surface (CS) of the passenger space.

[0011] The loop (R) is connected to a loop frame (RF) positioned on top of the frame structure (FU).

[0012] The roof frame (RF) forms the framework of the roof, that is, the roof (R), of the agricultural tractor (T).

[0013] The interior of the loop(R) is provided with a space for accommodating air conditioners, piping, wires, and connectors for wiring.

[0014] Various opening and closing mechanisms, such as a front window, openable windows and doors, and floor plates are combined on the exterior of the frame structure (FU) to partition the passenger space together with the roof (R).

[0015] The passenger compartment is equipped with the driver's seat and various operating mechanisms necessary for driving and operation, such as the steering wheel and gear lever.

[0016] The driver can perform operations necessary for driving and work in a comfortable environment created within a closed passenger space.

[0017] Meanwhile, as shown in FIG. 1, electrical components such as a work light (WL) are installed on the exterior of the cabin (C).

[0018] Work lights (WL) are installed at the front and rear upper ends of the cabin (C) to ensure the operator's working visibility.

[0019] Work lights (WL) illuminate the surroundings of an agricultural tractor in conjunction with lighting means such as headlights when it is difficult to secure sufficient visibility due to the time of day or weather conditions, and can contribute to improving the safety of the driver and work efficiency.

[0020] The work light (WL) can be turned on / off by the driver seated in the passenger compartment.

[0021] Since the work light (WL) is installed outside the cabin (C), the power supply line of the work light (WL) (hereinafter collectively referred to as the "wire") must be connected indoors to ensure power supply in response to the operator's signal. This will be explained with reference to FIGS. 2 and 3.

[0022] FIG. 2 is a reference diagram expressed as a cross-sectional view to explain the work light (WL) installed at the top front of the cabin (C) and its wiring structure.

[0023] Referring to FIG. 2, the wire (W) for power supply to the conventional work light (WL) is wired to the receiving space inside the roof (R) by penetrating the roof (R) (refer to part 'A' in FIG. 2) or the roof frame (RF) (refer to part 'B' in FIG. 2).

[0024] According to the conventional wiring structure of a work light (WL), it was unavoidable to drill a wiring hole (WH) in the roof (R) or roof frame (RF) to pass the wire (W) through for wiring the work light (WL).

[0025] FIG. 3 is a reference drawing expressed in perspective to explain a wiring structure in which a wire (W) for wiring a work light (WL) passes through a wiring hole (WH) formed in a loop frame (RF).

[0026] Referring to FIG. 3, a wiring hole (WH) of a predetermined diameter is formed at the front and rear of the loop frame (RF), and these wiring holes (WH) are arranged facing each other.

[0027] The wire (W) electrically connected to the work light (WL) passes through the wiring holes (WH) from the outside to the inside of the cabin (C) and is wired to be electrically connected to the control switch for operating the work light (WL) inside the passenger compartment.

[0028] In the conventional work light wiring structure, the wiring holes (WH) are formed in the roof frame (RF) (or roof (R)) that forms the outer surface of the cabin (C). Therefore, in order to thoroughly isolate the passenger space from the external environment, it is necessary to perform sealing treatment, such as placing a separate sealing member (e.g., a grommet (G)) in the wiring holes (WH).

[0029] However, in the conventional work light wiring structure, if the wiring hole (WH) side is not properly sealed due to wear or defects of the sealing member (G), water reaching the front side of the agricultural tractor (T) due to washing or weather conditions could flow directly into the cabin (C) through the wiring hole (WH). Even if the wiring hole (WH) is sealed by the sealing member (G), the conventional work light wiring structure had limitations in blocking water flowing into the cabin (C) along the wire (W) connected to the work light (WL).

[0030] Agricultural operations using agricultural tractors often involve the scattering of various contaminants, such as large amounts of dust, soil dust, muddy water, and dirty debris. Consequently, some of these contaminants accumulate on the exterior of the agricultural tractor.

[0031] In such agricultural work environments, if a large amount of water comes into contact with the cabin due to washing or weather conditions and enters the cabin through the wiring holes, it is inevitable that it will mix with contaminants during the process of entry.

[0032] Water that entered the cabin along with contaminants could contaminate the passenger space and make the driving environment for the driver inside the passenger space unpleasant, thus acting as a factor that could cause discomfort to the driver.

[0033] [Prior Art Literature]

[0034] [Patent Literature]

[0035] (Patent Document 1) Republic of Korea Registered Patent Publication No. 10-2359648

[0036] The present invention is intended to solve the aforementioned problems and was conceived from consideration of a structure to minimize the possibility of water ingress into the cabin.

[0037] To achieve this purpose, a cabin of an agricultural tractor according to one embodiment of the present invention comprises: a main body (110) that performs driving or work at a work site; a cabin (120) coupled to the main body (110) and forming a driver's passenger space (BA); and an electrical component (130) installed in the cabin (120) and connected to the passenger space (BA) via a wire (W); wherein the cabin (120) comprises: a frame structure (121) forming a frame that forms the passenger space (BA); and a roof (122) covering the upper part of the frame structure (121); and wherein the frame structure (121) comprises a plurality of support columns (121C-a to 121C-d) arranged lengthwise in the height direction of the cabin (120); and a plurality of loop frames (121RF-a to 121RF-d) to which the loop is joined, connecting the upper portions of adjacent support columns among the plurality of support columns (121C-a to 121C-d); wherein the plurality of support columns (121C-a to 121C-d) are formed in a tubular shape, and a wiring portion (121C-WP) for wiring the wire (W) for power supply of the electrical component (130) from the outside to the passenger space (BA) may be provided at the upper portion of at least one of the plurality of support columns (121C-a to 121C-d).

[0038] The above wiring portion (121C-WP) includes at least one first wiring hole (WH-1) formed on the outer surface of at least one of the support columns (121C-a to 121C-d) and positioned toward the outside of the boarding space (BA); and a second wiring hole (WH-2) formed on the outer surface of at least one of the support columns (121C-a to 121C-d) and positioned toward the inside of the boarding space (BA); and the wire (W) can be connected to the boarding space (BA) by sequentially passing through the first wiring hole (WH-1) and the second wiring hole (WH-2).

[0039] The size of the second wiring hole (WH-2) can be made larger than the size of the first wiring hole (WH-1).

[0040] The bottom of the second wiring hole (WH-2) can be positioned higher than the bottom of the first wiring hole (WH-1).

[0041] The wiring portion (121C-WP) may further include at least one support member (121C-SB) disposed inside at least one of the support columns (121C-a to 121C-d) and supporting at least a portion of the wire (W) passing through the first wiring hole (WH-1).

[0042] The above at least one support member (121C-SB1, 121C-SB2) comprises: a first support member (121C-SB1) positioned adjacent to the first wiring hole (WH-1); and a second support member (121C-SB2) positioned adjacent to the second wiring hole (WH-2); and the second support member (121C-SB2) may be positioned closer to the top of the support column (121C-a to 121C-d) than the first support member (121C-SB1).

[0043] The lower end of the first wiring hole (WH-1) is positioned higher than the lower end of the second wiring hole (WH-2), and at least one support member (121C-SB) can be positioned lower than the first wiring hole (WH-1) and the second wiring hole (WH-2).

[0044] The above wiring portion (121C-WP) may further include an absorbent member (121C-AM) disposed inside at least one of the support columns (121C-a to 121C-d) and for absorbing water flowing in through the first wiring hole (WH-1).

[0045] The above electrical component (130) may be a work light (130-L) for securing the driver's working view in the above passenger space (BA).

[0046] As explained above, according to the present invention, the following effects can be derived.

[0047] First, the possibility of water entering the cabin can be minimized because the structure allows water to be discharged directly downwards by the support column, even if it enters through the wiring holes exposed to the outside of the wiring section used to route wires from the outside of the cabin into the interior.

[0048] Second, since water entering through the wiring holes does not accumulate within the support columns, high durability of the frame structure can be ensured.

[0049] Third, since the possibility of water ingress into the cabin is minimized even without separate sealing of the wiring holes, the use of such parts can be omitted, contributing to cost reduction in manufacturing.

[0050] Fourth, it can provide a comfortable working environment for the driver inside the cabin.

[0051] Figure 1 is a photograph illustrating a conventional agricultural tractor.

[0052] FIGS. 2 and 3 are drawings for explaining the wiring structure of a conventional work light.

[0053] FIG. 4 is a drawing for explaining an agricultural tractor according to one embodiment of the present invention.

[0054] FIGS. 5 to 7 are drawings for explaining the cabin of an agricultural tractor according to one embodiment of the present invention.

[0055] FIG. 8 is a diagram illustrating the wiring structure of the work light in the cabin of an agricultural tractor.

[0056] FIGS. 9 to 13 are reference drawings for explaining various application examples of a wiring portion provided on a support column in an agricultural tractor according to an embodiment of the present invention.

[0057] Preferred embodiments according to the present invention are described with reference to the accompanying drawings, provided that for the sake of brevity, descriptions of well-known configurations are omitted or compressed as much as possible.

[0058] <Brief Overview of Agricultural Tractors>

[0059] FIG. 4 is a reference diagram for explaining an agricultural tractor (100) according to one embodiment of the present invention, and FIG. 5 is a schematic exploded perspective view for explaining the cabin (120) of the agricultural tractor (100) illustrated in FIG. 4.

[0060] Referring to FIGS. 4 and 5, an agricultural tractor (100) according to one embodiment of the present invention includes a main body (110), a cabin (120), and electrical components (130).

[0061] The main body (110) performs driving or work at the work site.

[0062] The main body (110) is equipped with components for driving and performing tasks. Examples of such components include a power source, a transmission, and a steering device.

[0063] The cabin (120) is connected to the main body (110) and forms the driver's passenger space (BA).

[0064] Various control means necessary for driving the agricultural tractor (100), such as a driver's seat, steering wheel, brake pedal, gear lever, and accelerator pedal, are arranged in the passenger compartment (BA).

[0065] The cabin (120) protects the driver from the external environment (rain, snow, various flying dust and other pollutants) by forming a passenger space (BA).

[0066] The cabin (120) includes a frame structure (121) and a roof (122).

[0067] The frame structure (121) forms a framework that forms the passenger space (BA).

[0068] The frame structure (121) may include a plurality of support columns (121C-a to 121C-d) and a plurality of roof frames (121RF-a to 121RF-d).

[0069] Multiple support columns (121C-a to 121C-d) are provided in a long length in the height direction of the cabin (120).

[0070] Multiple loop frames (121RF-a to 121RF-d) connect the upper portions between adjacent support columns (121C-a and 121C-b or 121C-c, 121C-d and 121C-b or 121C-c).

[0071] A loop (122) is coupled to a plurality of loop frames (121RF-a to 121RF-d).

[0072] Multiple loop frames (121RF-a to 121RF-d) form the framework of the loop (122).

[0073] Various opening and closing doors, such as a front window, an openable window and a door, and a floor plate are combined on the outer surface of the frame structure (121) to partition the passenger space (BA) together with the roof (122).

[0074] The loop (122) covers the upper part of the frame structure (121).

[0075] Inside the loop (122), there is a receiving space (CA) that can accommodate at least one of the components of an air conditioner, piping, wires, and a connector for wiring.

[0076] The electrical equipment (130) is connected to the passenger space (BA) via a wire (W).

[0077] An example of such an electrical component (130) is a work light (130-L).

[0078] The work light (130-L) is configured to ensure a working view for the driver in the passenger compartment (BA). The work light (130-L) is installed at the front and rear upper ends of the cabin (120).

[0079] The work light (130-L) operates according to an operation signal input by the driver in the passenger compartment.

[0080] The wire (W) electrically connected to the work light (130-L) passes from the outside to the inside of the cabin (120) through the wiring hole (WH) and is wired to be electrically connected to the operating switch (S) for operating the work light (130-L) inside the passenger space (BA).

[0081] Meanwhile, the present invention relates to the wiring structure of an electrical component (130). Since the wiring structure of the electrical component (130) proposed by the present invention is also related to the structure of the cabin (120), the cabin (120) will be described in detail below with reference to the drawings.

[0082] However, for the sake of convenience of explanation, the wiring structure of the electrical component (130) is to be explained only with respect to the work light (130-L) among the electrical components (130), but the application examples are not limited thereto.

[0083] Explanation of the agricultural tractor cabin

[0084] FIG. 6 is a perspective view illustrating the frame structure (110) of the cabin (120) of FIG. 5, FIG. 7 is a perspective view illustrating the support column (121C-a) of the frame structure (121) of FIG. 6, and FIG. 8 is a reference diagram for explaining the wiring structure of the work light (130-L) installed in the cabin (120) proposed by the present invention.

[0085] Referring to FIGS. 5 and FIGS. 6 to 7 mentioned above, a cabin (120) according to one embodiment of the present invention includes a frame structure (121) and a roof (122).

[0086] Referring to FIGS. 5 and 6, the frame structure (121) may include a plurality of support columns (121C-a to 121C-d), a plurality of roof frames (121RF-a to 121RF-d), and a plurality of lower frames (121BF-a, 121BF-b).

[0087] Multiple support columns (121C-a to 121C-d) form the corners of the cabin (120) and have an elongated shape in the vertical direction.

[0088] A plurality of support columns (121C-a to 121C-d) have a tubular shape, with the upper end adjacent to the loop (122) closed and the lower end open.

[0089] A plurality of support columns (121C-a to 121C-d) include a first support column (121C-a), a second support column (121C-b), a third support column (121C-c), and a fourth support column (121C-d).

[0090] The first support column (121C-a) is positioned on the front left side of the cabin (C).

[0091] The second support column (121C-b) is positioned to the right of the first support column (121C-a).

[0092] The third support column (121C-c) is positioned behind the first support column (121C-a).

[0093] The fourth support column (121C-d) is positioned behind the second support column (121C-b) and to the right of the third support column (121C-c).

[0094] The first support column (121C-a) and the second support column (121C-b) are provided in a shape that extends upward from the bottom, bends slightly forward up to a certain point, and then bends backward as they go upward from the said certain point.

[0095] The third support column (121C-c) and the fourth support column (121C-d) have a shorter length than the first support column (121C-a) and the second support column (121C-b), and are provided in a shape that curves forward as they go from the bottom to the top.

[0096] Each of the above-mentioned multiple support columns (121C-a to 121C-d) is designed to allow the passenger space (BA) to be wide while ensuring sufficient visibility for the driver.

[0097] Refer to FIG. 7 for the structure of these support columns (121C-a to 121C-d). FIG. 7 illustrates the first support column (121C-a) among the plurality of support columns (121C-a to 121C-d). Of course, the technical features thereof can be applied equally to the other support columns (121C-b to 121C-d).

[0098] Referring to FIG. 7, at least one of the multiple support columns (121C-a to 121C-d) (in FIG. 7, the first support column (121C-a)) is provided with a wiring section (121C-WP) for wiring a wire (W) for power supplying a work light (130-L) from the outside to the passenger space (BA).

[0099] The wiring portion (121C-WP) includes a first wiring hole (WH-1) and a second wiring hole (WH-2).

[0100] The first wiring hole (WH-1) is formed on the outer surface of the first support column (121C-a) and is positioned toward the outside of the boarding space (BA).

[0101] The number of first wiring holes (WH-1) can be varied according to the number of work lights (130-L) and the number of wires (W) connected to the work lights (130-L).

[0102] In FIG. 7, two first wiring holes (WH-1a, WH-1b) are illustrated as examples.

[0103] The second wiring hole (WH-2) is formed on the outer surface of the first support column (121C-a) and is positioned toward the inside of the boarding space (BA).

[0104] Referring to FIG. 8, the wire (W) connected to the work light (130) passes sequentially through two first wiring holes (WH-1a, WH-1b) and a second wiring hole (WH-2) and is exposed to the passenger space (BA).

[0105] The wire (W) exposed to the side of the passenger compartment (BA) is wired to be electrically connected to an operating switch (S) provided on the side of the passenger compartment (BA), as illustrated in FIG. 4.

[0106] In summary, the wiring section (121C-WP), which is a configuration for wiring the work light (130-L) in the agricultural tractor (100) proposed by the present invention, is provided in at least one of the support pillars (121C-a to 121C-d). This is so that even if water inevitably enters the support pillars (121C-a to 121C-d) through the wiring section (121C-WP) during washing or in rainy conditions, it does not enter the passenger space (BA) side, that is, the interior, but is discharged directly to the outside.

[0107] To explain more specifically, the support columns (121C-a to 121C-d) are provided in the shape of hollow tubes and have an open bottom, so even if water flows in through the first wiring hole (WH-1) positioned toward the outside of the cabin (120), the water flows down immediately along the inner surface of the support columns (121C-a to 121C-d) and is discharged to the outside.

[0108] Below, with reference to FIG. 6 again, we intend to explain other configurations of the frame structure (121) in addition to the previously mentioned plurality of support columns (121C-a to 121C-d).

[0109] Multiple loop frames (121RF-a to 121RF-d) connect the upper portions between adjacent support columns (121C-a and 121C-b or 121C-c, 121C-d and 121C-b or 121C-c).

[0110] A plurality of loop frames (121RF-a to 121RF-d) include a first loop frame (121RF-a), a second loop frame (121RF-b), a third loop frame (121RF-c), and a fourth loop frame (121RF-d).

[0111] The first loop frame (121RF-a) connects the upper portion of the first support column (121C-a) and the upper portion of the second support column (121C-b).

[0112] The second loop frame (121RF-b) connects the upper portion of the first support column (121C-a) and the upper portion of the third support column (121C-c).

[0113] The third loop frame (121RF-c) connects the upper portion of the second support column (121C-b) and the upper portion of the fourth support column (121C-d).

[0114] The fourth loop frame (121RF-d) connects the upper portion of the third support column (121C-c) and the upper portion of the fourth support column (121C-d).

[0115] A loop (122) is coupled to a plurality of loop frames (121RF-a to 121RF-d).

[0116] Multiple loop frames (121RF-a to 121RF-d) form the framework of the loop (122).

[0117] For reference, a reinforcing frame (SF) connecting adjacent support columns (121C-a and 121C-b or 121C-c, 121C-d and 121C-b or 121C-c) may be additionally placed at the bottom of the second loop frame (121RF-b), the third loop frame (121RF-c), and the fourth loop frame (121RF-d).

[0118] The reinforcing frame (SF) connects adjacent support columns (121C-a and 121C-b or 121C-c, 121C-d and 121C-b or 121C-c), and when the roof (122) is seated on the upper part of the roof frame (121RF-a to 121RF-d), it can firmly support the load together with the roof frame (121RF-a to 121RF-d).

[0119] A plurality of lower frames (121BF-a, 121BF-b, 121BF-c) connect the lower portions between at least some of the plurality of support columns (121C-a to 121C-d), such as 121C-a and 121C-c, and 121C-b and 121C-d).

[0120] A plurality of lower frames (121BF-a, 121BF-b, 121BF-c) include a first lower frame (121BF-a), a second lower frame (121BF-b), and a third lower frame (121BF-c).

[0121] The first lower frame (121BF-a) is positioned below the second loop frame (121RF-b) and has a shape that avoids the left rear wheel configured in the main body (110) while connecting the lower portion of the first support column (121C-a) and the lower portion of the third support column (121C-c).

[0122] The second lower frame (121BF-b) is positioned below the third loop frame (121RF-c) and has a shape that avoids the right rear wheel configured in the main body (110) while connecting the lower portion of the second support column (121C-b) and the lower portion of the fourth support column (121C-d).

[0123] The third lower frame (121BF-c) is positioned below the fourth loop frame (121RF-d) and connects the lower portion of the third support column (121C-c) and the lower portion of the fourth support column (121C-d).

[0124] Of course, the components forming the frame structure (121) are not limited to those described above and can take various forms and structures.

[0125] Referring again to FIG. 5, the loop (122) is seated on the top of the frame structure (121) to cover the top of the frame structure (121) and is coupled to the loop frame (121RF-a to 121RF-d).

[0126] The lower surface of the roof (122) faces the passenger space (BA) and forms the interior ceiling surface (CS).

[0127] The loop (122) has a receiving space (CA) between an inner cover (not shown) forming a ceiling surface (CS) and an outer cover (not shown) forming the outer edge of the loop (122).

[0128] The receiving space (CA) accommodates at least one of the components of an air conditioner, piping, wires, and connectors for wiring.

[0129] During the process of the loop (122) being seated and coupled to the frame structure (121), the second wiring hole (WH-2) of the wiring portion (121C-WP) is positioned on the side of the receiving space (CA), so that the wire (W) introduced from the outside inward is received in the receiving space (CA).

[0130] The wire (W) that passes through the wiring portion (121-WP) and is received in the receiving space (CA) may be connected to the operating switch (S) by being electrically connected to the connector, or it may be extended from the receiving space (CA) to the operating switch (S) so as to be directly connected to the operating switch (S).

[0131] In this invention, even without drilling a hole for wiring in the loop (122) or adding a separate structure for wiring, the wire (W) simply reaches the receiving space (CA) by passing through the wiring portion (121C-WP) provided in the support column (121C-a to 121C-d).

[0132] Below, with reference to the drawings, we will briefly explain the various forms of the wiring section (121C-WP) and the wiring structure of the work light (130-L) wire (W) accordingly.

[0133] Various Application Examples of Wiring Sections

[0134] FIGS. 9 to 13 are reference drawings for explaining various application examples of a wiring portion (121C-WP) provided in a support column (hereinafter, limited to the first support column (121C-a)) in an agricultural tractor (100) proposed by the present invention.

[0135] Before describing various application examples of the wiring section (121C-WP), the description of the essential components of the wiring section (121C-WP) has already been described above, so a redundant description thereof will be omitted.

[0136] The following description is limited to one of the multiple support columns (121C-a to 121C-d) (e.g., the first support column (121C-a)), but it goes without saying that the technical features thereof can be commonly applied to the remaining support columns (121C-b to 121C-d).

[0137] FIG. 9 is a reference diagram for explaining a first application example of the wiring portion (121C-WP).

[0138] FIG. 9(a) is a partial perspective view showing a part of the support column (121C-a), and FIG. 9(b) is a conceptual cross-sectional view of a part of the support column (121C-a).

[0139] The wiring portion (121C-WP) of the support column (121C-a) according to the example of FIG. 9 includes first wiring holes (WH-1a, WH-1b) and a second wiring hole (WH-2).

[0140] According to the example in FIG. 9, the lower end (E2) of the second wiring hole (WH-2) is positioned above the lower end (E1) of the first wiring holes (WH-1a, WH-1b).

[0141] In this case, the wire (W) introduced from the outside into the cabin (120) is positioned obliquely upward as it goes into the interior of the cabin (120).

[0142] To explain more specifically, the first point (P1) of the wire (W) spanning the first wiring holes (WH-1a, WH-1b) adjacent to the outside is located lower than the second point (P2) of the wire (W) spanning the second wiring hole (WH-2) adjacent to the inside of the cabin (120).

[0143] Due to the height difference between the first point (P1) and the second point (P2), the wire (W) penetrating the wiring section (121C-WP) is positioned at an angle, so water flowing in along the wire (W) does not reach the second point (P2) and falls downward at a location adjacent to the first point (P1).

[0144] According to the example of FIG. 9, the wiring structure of the work light (130-L) in the agricultural tractor (100) proposed by the present invention can also prevent water from flowing into the cabin (120) through the wire (W).

[0145] FIGS. 10 to 12 are reference drawings for explaining a second application example of the wiring portion (121C-WP).

[0146] FIGS. 10(a), FIGS. 11(a) and FIGS. 12(a) are partial perspective views illustrating a portion of a support column (121C-a), and FIGS. 10(b), FIGS. 11(b) and FIGS. 12(b) are conceptual cross-sectional views illustrating a portion of a support column (121C-a).

[0147] The wiring portion (121C-WP) of the support column (121C-a) according to the examples of FIGS. 10 to 12 includes first wiring holes (WH-1a, WH-1b), a second wiring hole (WH-2), and a support member (121C-SB).

[0148] The support member (121C-SB) is positioned on the inner side of the support column (121C-a).

[0149] To explain more specifically, the support member (121C-SB) is provided in a bar shape and is arranged transversely on the inner upper side of the support column (121C-a), that is, on the inner side corresponding to the wiring portion (121C-WP).

[0150] The support member (121C-SB) supports at least a portion of the wire (W) passing through the first wiring hole (WH-1a, WH-1b) at the placement position.

[0151] Referring to the example in FIG. 10, the support member (121C-SB) can be positioned above the first wiring holes (WH-1a, WH-1b).

[0152] A single support member (121C-SB) is positioned on the inner side of the wiring portion (121C-WP) so that the wire (W) entering the cabin (120) from the outside is positioned obliquely upward and across the support member (121C-SB).

[0153] To explain more specifically, the first point (P1) of the wire (W) spanning the first wiring holes (WH-1a, WH-1b) adjacent to the outside is positioned lower than the second point (P2) of the wire (W) spanning the support member (121C-SB).

[0154] Due to the height difference between the first point (P1) and the second point (P2), the wire (W) penetrating the wiring section (121C-WP) is positioned at an angle, so water flowing in along the wire (W) does not reach the second point (P2) and falls downwards midway.

[0155] Referring to the example in FIG. 11, a plurality of support members (121C-SB1, 121C-SB2) are arranged on the inner side of the wiring portion (121C-WP), so that the wire (W) entering the cabin (120) from the outside is wound or draped over each of the plurality of support members (121C-SB1, 121C-SB2) and arranged obliquely toward the upward direction.

[0156] To explain more specifically, the first point (P1) of the wire (W) that passes through the first wiring holes (WH-1a, WH-1b) adjacent to the outside and spans the first support member (121C-SB1) is located lower than the second point (P2) of the wire (W) that spans the second support member (121C-SB2).

[0157] Due to the height difference between the first point (P1) and the second point (P2), the wire (W) penetrating the wiring section (121C-WP) is positioned at an angle, so water flowing in along the wire (W) does not reach the second point (P2) and falls downwards and is discharged to the outside.

[0158] Referring to the example in FIG. 12, the lower end (E1) of the first wiring hole (WH-1) formed in the support column (121C-a) is positioned higher than the lower end (E2) of the second wiring hole (WH-2).

[0159] The support member (121C-SH) is positioned on the inner side of the wiring portion (121C-WP), but is positioned at a lower position than the first wiring hole (WH-1) and the second wiring hole (WH-2).

[0160] In the example of FIG. 12, the wire (W) is wound or stretched over the support member (121C-SB) through the first wiring holes (WH-1a, WH-1b) adjacent to the outside, and is introduced into the cabin (120) by passing through the second wiring hole (WH-2).

[0161] To explain more specifically, the first point (P1) of the wire (W) spanning the first wiring holes (WH-1a, WH-1b) is positioned higher than the second point (P2) of the wire (W) that is wrapped at least partially around the support member (121C-SB). The second point (P2) is positioned lower than the third point (P3) of the wire (W) spanning the second wiring hole (WH-2) after being supported by the support member (121C-SB).

[0162] As the second point (P2) is located at a lower position than the third point (P3), the wire (W) is positioned obliquely upward from the second point (P2) to the third point (P3), regardless of the placement position of the first point (P1). Due to the height difference between the second point (P2) and the third point (P3), water flowing through the wire (W) does not reach the third point (P3) and falls off midway.

[0163] In the example of FIG. 12, a single support member (121C-SB) is shown, but it is obvious that multiple members may be applied.

[0164] According to the examples of FIGS. 10 to 12, the wiring structure of the work light (130) in the agricultural tractor (100) proposed by the present invention blocks the possibility of water flowing into the cabin (120) along the wire (W) and is expected to support the wire (W) more firmly than the example of FIG. 9.

[0165] For reference, a single support member (121C-SB) or multiple support members (121C-SB1, 121C-SB2) may be made of steel and fixedly installed within the support column (121C-a) through welding.

[0166] However, since the examples of FIGS. 10 to 12 are merely one embodiment, the number of applications of the support member (121C-SB) is not limited to what is described above, and the placement position is also not limited to what is described above and can be placed above or below either of the first wiring hole (WH-1) and the second wiring hole (WH-2).

[0167] FIG. 13 is a reference diagram for explaining a third application example of the wiring portion (121C-WP).

[0168] FIG. 13(a) is a partial perspective view showing a part of the support column (121C-a), and FIG. 13(b) is a conceptual cross-sectional view of a part of the support column (121C-a).

[0169] The wiring portion (121C-WP) of the support column (121C-a) according to the example of FIG. 13 includes first wiring holes (WH-1a, WH-1b), second wiring hole (WH-2), a plurality of support bars (121C-SB1, 121C-SB2) and an absorbing member (121C-AM).

[0170] The absorbent member (121C-AM) is positioned on the inner side of the support column (121C-a), that is, on the inner side of the wiring portion (121C-WP), and is configured to absorb water flowing in through the first wiring holes (WH-1a, WH-1b).

[0171] For example, the absorbent member (121C-AM) may be made of a sponge.

[0172] The absorbent member (121C-AM) made of sponge can absorb water that has flowed into the interior of the wiring portion (121C-WP) and then naturally dry as the absorbed water evaporates.

[0173] The absorbent member (121C-AM) can be reused by repeatedly absorbing and drying water, or it can be easily replaced at the operator's discretion.

[0174] For reference, in addition to the example of FIG. 13, the size of the second wiring hole (WH-2) is provided to be larger than the first wiring holes (WH-1a, WH-1b) in the agricultural tractor (100) proposed by the present invention. This difference in size between the wiring holes (WH-1a, WH-1b, WH-2) not only facilitates wiring work but also facilitates the placement of additional components, such as an absorbent member (121C-AM), within the wiring portion (121C-WP).

[0175] However, since the size of the wiring holes (WH-1a, WH-1b, WH-2) is sufficient as long as it facilitates the drawing of the wire (W), differentiating the sizes of the wiring holes ((WH-1a, WH-1b, WH-2)) may be applied selectively as needed.

[0176] In the case of the example of FIG. 13, as mentioned in the description regarding FIG. 11, a plurality of support members (121C-SB1, 121C-SB2) are arranged on the inner side of the wiring portion (121C-WP), so that the wire (W) entering the cabin (120) from the outside is wound or draped over each of the plurality of support members (121C-SB1, 121C-SB2) and arranged obliquely toward the upward direction. Accordingly, an absorption member (121C-AM) is additionally configured.

[0177] In the example of FIG. 13, the absorbent member (121C-AM) is positioned adjacent to the first wiring holes (WH-1a, WH-1b). In addition, the absorbent member (121C-AM) is positioned adjacent to the wire (W) and above it to absorb water flowing in along the wire (W).

[0178] As illustrated in FIG. 13, a single absorbing member (121C-AM) may be disposed, or at least two absorbing members (121C-AM) may be divided and disposed within the internal space of the wiring portion (121C-WP).

[0179] It goes without saying that additional configuration of the absorbing member (121C-AM) is not limited to the previously mentioned second application example but is also applicable to the first application example.

[0180] Even if an absorption member (121C-AM) is additionally configured, the wire (W) penetrating the wiring portion (121C-WP) is positioned obliquely due to the height difference between the first point (P1) and the second point (P2) or between the second point (P2) and the third point (P3), as in the wiring structure of the second application example as well as the first application example.

[0181] In this wiring structure, the absorbing member (121C-AM) primarily absorbs water flowing in through the first wiring holes (WH-1a, WH-1b) to block the inflow of water into the cabin (120).

[0182] Even though the absorbent member (121C-AM) has sufficiently absorbed water, if the amount of water flowing into the wiring portion (121C-WP) is large, some of the water absorbed by the absorbent member (121C-AM) falls downwards to the support column (121C-a).

[0183] At this time, as the wire (W) placed on the lower side of the absorbing member (121C-AM) is positioned at an angle, even if water falling from the absorbing member (121C-AM) reaches the wire (W), the water does not travel along the wire (W) toward the second drain hole (WH-2) but falls downwards midway without reaching the second point (P2).

[0184] According to the example in FIG. 13, the wiring structure of the work light (130-L) in the agricultural tractor (100) proposed by the present invention can completely block the possibility of water entering the cabin (120) through the drainage holes (WH-1a, WH-1b, WH-2) as well as the possibility of water entering the cabin (120) along the wire (W).

[0185] For reference, the wiring structure of the above-described work light (130-L) is not limited to use only for the work light (130-L), but can also be applied to wiring the wires of electrical components (130) installed outside the cabin (120) into the interior.

[0186] The embodiments described above are merely preferred examples of the present invention and may have various applications. Therefore, the present invention should not be understood as being limited only to the contents described above. Instead, the scope of the present invention should be understood as the separately described claims and their equivalents.

Claims

1. A main body (110) that performs driving or work at the work site; A cabin (120) coupled to the main body (110) and forming a driver's passenger space (BA); and It includes an electrical component (130) installed in the cabin (120) and connected to the passenger space (BA) via a wire (W); The above cabin (120) is, A frame structure (121) forming a framework that forms the above-mentioned passenger space (BA); and A roof (122) covering the upper part of the above frame structure (121); including, The above frame structure (121) is, A plurality of support columns (121C-a to 121C-d) arranged lengthwise in the height direction of the cabin (120); and A plurality of roof frames (121RF-a to 121RF-d) to which the loop is joined, connecting the upper portions between adjacent support columns among the plurality of support columns (121C-a to 121C-d); comprising, The plurality of support columns (121C-a to 121C-d) are formed in a tubular shape, and At least one of the plurality of support columns (121C-a to 121C-d) has a wiring portion (121C-WP) provided at the upper portion for wiring the wire (W) for power supplying the electrical component (130) from the outside to the passenger space (BA). Agricultural tractor.

2. In Paragraph 1, The above wiring portion (121C-WP) is, At least one first wiring hole (WH-1) formed on the outer surface of at least one of the support columns (121C-a to 121C-d) and positioned toward the outside of the passenger space (BA); and A second wiring hole (WH-2) formed on the outer surface of at least one of the support columns (121C-a to 121C-d) and positioned toward the inside of the passenger space (BA); comprising The above wire (W) sequentially passes through the first wiring hole (WH-1) and the second wiring hole (WH-2) and is connected to the boarding space (BA). Agricultural tractor.

3. In Paragraph 2, The size of the second wiring hole (WH-2) is provided to be larger than the size of the first wiring hole (WH-1). Agricultural tractor.

4. In Paragraph 2, The lower end of the second wiring hole (WH-2) is positioned higher than the lower end of the first wiring hole (WH-1). Agricultural tractor.

5. In Paragraph 2, The above wiring portion (121C-WP) is, Further comprising: at least one support member (121C-SB) disposed inside at least one of the support columns (121C-a to 121C-d) and supporting at least a portion of the wire (W) passing through the first wiring hole (WH-1). Agricultural tractor.

6. In Paragraph 5, The above at least one support member (121C-SB1, 121C-SB2) is, A first support member (121C-SB1) positioned adjacent to the first wiring hole (WH-1); and A second support member (121C-SB2) positioned adjacent to the second wiring hole (WH-2); comprising, The second support member (121C-SB2) is positioned closer to the top of the support columns (121C-a to 121C-d) than the first support member (121C-SB1). Agricultural tractor.

7. In Paragraph 5, The lower end of the first wiring hole (WH-1) is positioned higher than the lower end of the second wiring hole (WH-2), and The above at least one support member (121C-SB) is positioned lower than the first wiring hole (WH-1) and the second wiring hole (WH-2). Agricultural tractor.

8. In Paragraph 2, The above wiring portion (121C-WP) is, Further comprising: an absorbent member (121C-AM) disposed on the inner side of at least one of the support columns (121C-a to 121C-d) and for absorbing water flowing in through the first wiring hole (WH-1). Agricultural tractor.

9. In Paragraph 1, The above electrical component (130) is a work light (130-L) for securing the driver's working view in the above passenger space (BA). Agricultural tractor.

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