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EP-4454979-B1 - WORK VEHICLE

EP4454979B1EP 4454979 B1EP4454979 B1EP 4454979B1EP-4454979-B1

Inventors

  • TSUKADA, Yosuke
  • Ukai, Tomoyuki

Dates

Publication Date
20260506
Application Date
20240419

Claims (9)

  1. A work vehicle, comprising: a body (3); a travel device (1,2) provided for the body (3); a cargo box disposed on the body (3) and including a floor (9) and a gate (10, 11); a shaft (16,27,32) on a first one of the floor (9) and the gate (10, 11); a support (14a, 33a, 34a) on a second one of the floor (9) and the gate (10, 11); and a holder (17,29), with the shaft (16,27,32) and support (14a, 33a, 34a) attached to each other, the gate (10, 11) being swingable about a horizontal axis (P1,P3) of each of the shaft (16,27,32) and the support (14a, 33a, 34a) between a standing position (A11,A21), in which the gate (10, 11) is oriented upward from the floor (9), and an open position (A13,A22), in which the gate (10, 11) is oriented downward from the floor (9), the gate (10, 11) being detachable from the floor (9) with the shaft (16,27,32) and the support (14a, 33a, 34a) apart from each other, and the holder (17,29) being manually operable between (i) a first position (B11,B21), in which the holder (17,29) prevents the shaft (16,27,32) and the support (14a, 33a, 34a) from becoming apart from each other and holds the gate (10, 11) in such a manner that the gate (10, 11) is swingable about the axis (P1,P3), and (ii) a second position (B12,B22), in which the holder (17,29) allows the shaft (16,27,32) and the support (14a, 33a, 34a) to become apart from each other and allows the gate (10, 11) to be detached from the floor (9); the work vehicle being characterized in that it comprises: a second position holder (14b, 26b) configured to hold the holder (17,29) in the second position (B12,B22).
  2. The work vehicle according to claim 1, further comprising: an urging section (18, 30) urging the holder (17,29) toward the first position (B11).
  3. The work vehicle according to claim 1 or 2, wherein the gate (10) is at a back or front portion of the floor (9), the shaft (16) is disposed laterally on the gate (10), the support (14a) is an upwardly open depression (14a) in the floor (9), and the gate (10) is swingable about the axis (P1) with the shaft (16) in the depression (14a) and detachable from the floor (9) with the shaft (16) apart upward from the depression (14a).
  4. The work vehicle according to claim 3, wherein the holder (17) has an opening (17b), with the holder (17) in the first position (B11), the shaft (16) is in the depression (14a) and has an end in the opening (17b), and in the first position (B11), the holder (17) engages with the shaft (16) to prevent the shaft (16) from becoming apart upward from the depression (14a).
  5. The work vehicle according to claim 1 or 2, wherein the gate (11) is at a lateral portion of the floor (9), the shaft (27,32) is disposed on the floor (9) in a front-back direction, the support (33a, 34a) is a boss (33a, 34a) disposed on the gate (11) in the front-back direction, and the gate (11) is swingable about the axis (P3) with the shaft (27,32) in the boss (33a, 34a) and detachable from the floor (9) with the boss (33a, 34a) apart forward or backward from the shaft (27,32).
  6. The work vehicle according to claim 5, wherein the holder (29) has an opening (29b), with the holder (29) in the first position (B21), the shaft (27,32) is in the boss (33a, 34a) and has an end in the opening (29b), and in the first position (B21), the holder (29) engages with the boss (33a, 34a) to prevent the boss (33a, 34a) from becoming apart forward or backward from the shaft (27,32).
  7. The work vehicle according to claim 5, wherein the gate (11) is swingable to a lower intermediate position (A24) above the open position (A22) by an angle, and the work vehicle further comprises: a first restrictor (31b) configured to prevent the boss (33a, 34a) from becoming apart forward or backward from the shaft (27,32) with the holder (29) in the second position (B22) and the gate (11) between the open position (A22) and the lower intermediate position (A24).
  8. The work vehicle according to claim 7, wherein the gate (11) is swingable to an upper intermediate position (A23) below the standing position (A21) by an angle and above the lower intermediate position (A24), and the work vehicle further comprises: a second restrictor (22) configured to prevent the boss (33a, 34a) from becoming apart forward or backward from the shaft (27,32) with the holder (29) in the second position (B22) and the gate (11) between the standing position (A21) and the upper intermediate position (A23).
  9. The work vehicle according to claim 8, wherein the second restrictor (22) is a fixing section (22) manually operable to fix the gate (11) in the standing position (A21) and unfix the gate (11) from the standing position (A21).

Description

Technical Field The present invention relates to a work vehicle including a body provided with a travel device in the form of wheels or a crawler travel device and a cargo box on the body. Background Art JP 2021-49789 A1 discloses a work vehicle including a cargo box on its body. The cargo box includes at a back portion thereof a gate swingable about a lateral axis between a standing position and an open position. US 2022/194490 A1 discloses a vehicle tailgate securing assembly and method. Summary of Invention Technical Problem There has been a demand for a work vehicle including a cargo box on its body to be configured such that the cargo box includes a gate that is not only swingable between a standing position and an open position, but also detachable from the floor of the cargo box. The present invention has an object of providing a work vehicle including on its body a cargo box with a gate that is swingable between a standing position and an open position and that is easily detachable from the floor of the cargo box. Solution to Problem A work vehicle of the present invention is defined in claim 1. The work vehicle includes: a body; a travel device provided for the body; a cargo box disposed on the body and including a floor and a gate; a shaft on a first one of the floor and the gate; a support on a second one of the floor and the gate; and a holder, with the shaft and support attached to each other, the gate being swingable about a horizontal axis of each of the shaft and the support between a standing position, in which the gate is oriented upward from the floor, and an open position, in which the gate is oriented downward from the floor, the gate being detachable from the floor with the shaft and the support apart from each other, the holder being manually operable between (i) a first position, in which the holder prevents the shaft and the support from becoming apart from each other and holds the gate in such a manner that the gate is swingable about the axis, and (ii) a second position, in which the holder allows the shaft and the support to become apart from each other and allows the gate to be detached from the floor. The work vehicle configured as above includes a cargo box that includes a floor and a gate with a shaft and a support thereon, and allows a worker to attach the shaft and the support to each other for the gate to swing between a standing position and an open position. The above configuration allows the worker to move the holder to the first position to prevent the shaft and the support from becoming apart from each other. This in turn allows the worker to easily swing the gate between the standing position and the open position. When detaching the gate from the floor, the worker moves the holder from the first position to the second position to allow the shaft and the support to become apart from each other. This in turn allows the worker to easily detach the gate from the floor. When the worker attaches the shaft and the support to each other and attaches the gate to the floor, the worker then simply moves the holder from the second position to the first position. The above configuration allows a worker to move the holder from the first position to the second position to attach and detach the gate to and from the floor, and eliminates the need to, for example, tighten and loosen a bolt. The above configuration thereby provides a work vehicle including a cargo box with a gate having improved workability in its attachment and detachment. The work vehicle of the invention also includes: a second position holder configured to hold the holder in the second position. The above configuration allows a worker to, when detaching the gate from the floor, move the holder from the first position to the second position and use the second position holder to hold the holder in the second position. This prevents the holder from being moved from the second position to the first position, which would otherwise make it difficult for the worker to detach the gate from the floor. The above configuration thereby provides a work vehicle including a cargo box with a gate having further improved workability in its attachment and detachment. The work vehicle may preferably include: an urging section urging the holder toward the first position. With the above configuration, moving the holder to the first position causes the urging section to urge the holder toward the first position. This inhibits the holder from being moved out of the first position by, for example, vibration during travel. The above configuration requires a worker to move the holder from the first position to the second position against the urging force of the urging section. The resistance of the urging force reminds the worker that the worker will be detaching the gate. The work vehicle may preferably be further configured such that the gate is at a back or front portion of the floor, the shaft is disposed laterally on the gate, the sup