Carrying trolley

Abstract

Provided is a transport trolley that can be easily and accurately fixed to a prescribed position on a traveling surface. A transport trolley (1) capable of traveling while carrying an object (W) to be transported is provided with: a traveling section (3) that travels along a traveling surface (F); and an engagement section (4) that engages with an anchor (A) protruding from the traveling surface (F) by movement in the traveling direction of the trolley. The engagement section (4) has a first engagement section (4A) and a second engagement section (4B) which are disposed so as to be offset from each other in the vehicle width direction orthogonal to the traveling direction of the vehicle at the bottom of the platform (2), and which engage with the respective corresponding anchors (A).

Description

Technical Field

[0001] The present invention relates to a transport dolly, and more particularly to a transport dolly capable of traveling while carrying a transport object. Background Art

[0002] Patent Document 1 discloses a transport trolley that can carry objects and travel on a floor surface. The transport trolley has a structure in which a plurality of casters serving as travel wheels and a hammer-lock type stopper are mounted on the bottom surface of a cargo bed.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2015-16779 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the structure described in Patent Document 1, the stopper is configured to grip the floor surface by floating the caster from the floor surface. Therefore, it is difficult to align and fix the transport dolly to an accurate position relative to the floor surface that serves as the running surface. Therefore, the present invention provides a transport dolly that can be easily and accurately fixed to a predetermined position on the running surface.

[0008] Means for solving problems

[0009] As a means for solving the above-mentioned problems, the transport cart of the present invention adopts the following means.

[0010] That is, the first invention of the present invention is a transport trolley that can carry the transported objects and travel, wherein it has: a traveling portion that travels along a traveling surface; and a locking portion that is locked relative to a locked portion protruding from the traveling surface through movement in the traveling direction of the vehicle, the locking portion having a first locking portion and a second locking portion that are staggered in the vehicle width direction orthogonal to the traveling direction of the vehicle at the bottom of the trolley body and are constructed to respectively lock with the corresponding locked portions.

[0011] According to the first invention, the first engaging portion and the second engaging portion can be engaged with corresponding engaged portions without abutting against non-corresponding engaged portions by movement of the vehicle in the traveling direction. Therefore, the transporting trolley can be easily and accurately fixed to a predetermined position on the travel surface.

[0012] The second invention of the present invention is based on the above-mentioned first invention, wherein the running portion is configured to be offset in the direction of travel of the vehicle than the first locking portion and / or the second locking portion, and is configured to be offset in the vehicle width direction compared to the first locking portion and / or the second locking portion which are configured to be offset in the direction of retreat of the vehicle of the running portion.

[0013] According to the second invention, by moving the vehicle in the advancing direction, the first engaging portion and / or the second engaging portion arranged to be offset in the backward direction of the vehicle can be appropriately engaged with the corresponding engaged portion without the traveling portion hitting the non-engaging portion.

[0014] A third invention of the present invention is based on the first or second invention, wherein at least one of the first engaging portion and the second engaging portion has a locking mechanism that releasably locks the corresponding engaged portion.

[0015] According to the third invention, the first engaging portion and / or the second engaging portion including the locking mechanism can be more accurately fixed to the corresponding engaged portion.

[0016] The fourth invention of the present invention is based on the above-mentioned third invention, the engaged part for being locked by the locking mechanism has a frame upper part and a frame side part which are in the shape of a three-sided frame in the travel direction view along the travel direction of the vehicle, and the locking mechanism is locked to the frame upper part of the engaging part, and the transport trolley also has a locking guide, which is configured to guide the locking mechanism to a position opposite to the frame upper part in the travel direction of the vehicle by abutting against the frame side part of the engaged part for being locked by the locking mechanism from the outer side in the vehicle width direction.

[0017] According to the fourth invention, the lock mechanism can be locked in a state where the lock mechanism is more appropriately positioned relative to the frame upper portion of the engaged portion having a three-sided frame shape.

[0018] The fifth invention of the present invention is based on the above-mentioned third invention, wherein the first snap-fitting part and the second snap-fitting part are respectively arranged in a pair in the vehicle width direction, the pair of the first snap-fitting parts are arranged to be offset in the direction of travel of the vehicle than the pair of the second snap-fitting parts, and the arrangement interval of the pair of the first snap-fitting parts is narrower than the arrangement interval of the pair of the second snap-fitting parts.

[0019] According to the fifth invention, by providing a pair of first engaging portions and second engaging portions in the vehicle width direction at positions offset in the vehicle travel direction, the transport trolley can be more accurately fixed to a predetermined position on the travel surface. In addition, since the distance between the pair of first engaging portions provided at the front side of the vehicle travel direction is narrower than the distance between the pair of second engaging portions, it is visually easier to perform the operation of engaging them to the corresponding engaged portions than in a case where this is not the case.

[0020] The sixth invention of the present invention is based on the above-mentioned fifth invention, wherein the running part is a running wheel, and the running wheel has a pair of rear wheels arranged in the vehicle width direction and a pair of front wheels arranged in the vehicle width direction at a position offset from the pair of rear wheels in the moving direction of the vehicle, the pair of first engaging parts are arranged offset from the pair of front wheels in the moving direction of the vehicle and inward in the vehicle width direction, and the pair of second engaging parts are arranged offset from the pair of rear wheels in the backward direction of the vehicle and inward in the vehicle width direction.

[0021] According to the sixth invention, by using the travel wheels for the travel portion, even if the transported object is a heavy object, it can travel smoothly along the travel surface. In addition, a pair of first engaging portions and second engaging portions can be appropriately engaged with the corresponding engaged portions respectively without abutting the pair of front wheels and rear wheels against the engaged portions.

[0022] A seventh invention of the present invention is based on the sixth invention, wherein the pair of the first engagement parts does not include the lock mechanism, and the pair of the second engagement parts includes the lock mechanism.

[0023] According to the seventh aspect of the present invention, a user standing in the rearward direction of the transport cart can easily perform the lock / release switching operation of each locking mechanism.

[0024] The eighth invention of the present invention is based on the above-mentioned first or second invention, and the transport trolley also has an engaging guide, which extends from the bottom of the trolley body and is constructed to guide the engaged part in a manner that does not deviate from the vehicle width direction directly below the trolley body by abutting against the engaged part in the vehicle width direction.

[0025] According to the eighth invention, by moving the vehicle in the direction of travel, the engaged portion for the first engaging portion and / or the second engaging portion can be guided in a manner that does not deviate from directly below the trolley body toward the vehicle width direction. Thus, the transport trolley can be more easily fixed to a predetermined position on the travel surface.

[0026] The ninth invention of the present invention is based on the above-mentioned eighth invention, wherein the first engaging portion and the second engaging portion are respectively arranged in a pair in the vehicle width direction, and the traveling portion is a traveling wheel, which has a pair of rear wheels arranged in the vehicle width direction and a pair of front wheels arranged in the vehicle width direction at a position offset from the pair of rear wheels in the traveling direction of the vehicle, the pair of the first engaging portions are arranged offset from the pair of front wheels in the traveling direction of the vehicle and inward in the vehicle width direction, and the pair of the second engaging portions are arranged offset from the pair of rear wheels in the backward direction of the vehicle and in the vehicle width direction, and the engaging guide is configured to guide the engaged portion engaged by the pair of the second engaging portions in a manner that does not deviate from directly below the trolley body toward the vehicle width direction by abutting against the engaged portion engaged by the pair of the second engaging portions from the outside in the vehicle width direction.

[0027] According to the ninth invention, as the vehicle moves in the direction of travel, the engaged portion that first passes between the engagement guides and engages with the pair of second engagement portions can be guided while the pair of first engagement portions and the second engagement portions can be engaged with the corresponding engaged portions. Thus, the transport trolley can be more easily fixed to a predetermined position on the travel surface.

[0028] The tenth invention of the present invention is based on the above-mentioned first or second invention, wherein the running portion is a running wheel having a pair of rear wheels arranged in the vehicle width direction and a pair of front wheels arranged in the vehicle width direction at a position offset in the traveling direction of the vehicle than the pair of rear wheels.

[0029] According to the tenth invention, by using the traveling wheels as the traveling portion, even if the transported object is a heavy object, it can travel smoothly along the traveling surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a perspective view showing a schematic structure of the transport cart according to the first embodiment.

[0031] Figure 2 This is a perspective view showing a state where the transport cart is positioned on the anchoring member on the travel surface.

[0032] Figure 3 This is a perspective view of the transport trolley as viewed from the bottom.

[0033] Figure 4 This is a bottom view of the transport trolley.

[0034] Figure 5 It is a perspective view showing a state of engagement with an anchor.

[0035] Figure 6 It is a perspective view showing a state of the locking mechanism before locking.

[0036] Figure 7 It is a perspective view showing the locked state of the locking mechanism.

[0037] Figure 8 It is a perspective view showing a state where the lock mechanism has been released.

[0038] Fig. 9 It is a plan view showing a state where the engagement guide guides the movement of the transport cart.

[0039] Fig.10 It is a plan view showing a state in which the lock guide guides the position of the lock mechanism.

[0040] Fig.11 It is a perspective view showing a schematic structure of a transport cart according to a second embodiment.

[0041] Fig.12 It is a plan view showing a state where the transport cart is retreated from the locked position to the midway position.

[0042] Fig.13 This is a plan view showing a state in which the anchor on the near front side is moved out to the side from the escape hole on the side surface due to the lateral movement of the transport cart. DETAILED DESCRIPTION

[0043] Hereinafter, a mode for carrying out the present invention will be described using the drawings.

[0044] 《First Implementation Mode》

[0045] (Schematic Structure of Transport Carriage 1)

[0046] First, use Figures 1 to 10 The structure of the transport dolly 1 according to the first embodiment of the present invention will be described. In the following description, when directions such as front, back, up, down, left, and right are indicated, these directions are indicated in the drawings.

[0047] The directions shown in the drawings are the directions viewed from the user using the transport cart 1. The “front direction” in the drawings refers to the traveling direction of the transport cart 1 (the traveling direction of the vehicle). In the following description, when a specific reference figure is not shown or when there is no corresponding reference numeral in the reference figure, reference will be made to the reference numerals as appropriate. Figures 1 to 10 Any picture of .

[0048] like Figure 1 As shown, the transport trolley 1 involved in this embodiment is configured as a hand-pushed trolley device that can carry a transport object W and travel. The transport object W is, for example, a storage rack that becomes a vehicle equipment. The travel surface F for the transport trolley 1 to travel is, for example, the ground or the floor surface of the vehicle. It should be noted that, in the case where the transport trolley 1 is carried on the floor surface of the vehicle and the transport trolley 1 is loaded on a transport device (not shown) installed on a step frame, the travel surface F can also be its loading surface.

[0049] The transport cart 1 has an interlocking stopper structure capable of being fixed to a predetermined position on the travel surface F. Specifically, the transport cart 1 is formed into a structure fixed to the travel surface F by engaging with four anchors A provided at predetermined positions on the travel surface F. Here, each anchor A corresponds to the "engaged portion" of the present invention.

[0050] Two anchors A are attached to each pair of front and rear fixed rails R embedded in the running surface F and extending parallel to the vehicle width direction (left-right direction). Each fixed rail R is provided so that its upper surface is exposed in the same plane as the running surface F.

[0051] Each fixed rail R is composed of Airline Rail (registered trademark). In addition, the mounting structure of each anchor A to each fixed rail R is composed of a stud fitting that can adjust the mounting position to each fixed rail R at a predetermined interval in the rail length direction (left-right direction).

[0052] The specific structure of these anchors A and fixed rails R is described in Japanese Patent Application Laid-Open No. 2024-015759. The assembly position of each anchor A in each fixed rail R corresponds to the position of each of the four engaging claws A1 and B1 provided on the transport trolley 1 described later. The shape of each anchor A when viewed in the travel direction along the travel direction of the transport trolley 1 is a three-sided frame shape (inverted U shape).

[0053] The transport trolley 1 has a cargo platform 2 in the shape of a rectangular plate when viewed from above, which can carry the transported object W, and a travel portion 3 consisting of four travel wheels (front wheels 3A and rear wheels 3B) arranged at the bottom of the cargo platform 2. Here, the cargo platform 2 is equivalent to the "trolley body" of the present invention. The travel portion 3 is composed of a pair of front wheels 3A on the front side and a pair of rear wheels 3B on the rear side. These front wheels 3A and rear wheels 3B are respectively composed of universal casters. It should be noted that the front wheels 3A or the rear wheels 3B can also be composed of fixed casters.

[0054] The transport cart 1 also has an engagement portion 4 composed of four engagement portions (first engagement portion 4A and second engagement portion 4B) provided at the bottom of the cargo bed 2. The engagement portion 4 is composed of a pair of first engagement portions 4A at the front and a pair of second engagement portions 4B at the rear.

[0055] The first engaging portion 4A and the second engaging portion 4B respectively have engaging claws A1 and B1 (see FIG. 1 ) which are engaged with the frames of the corresponding anchors A provided on the travel surface F when the transport cart 1 is moved in the travel direction. Figure 2 ). By the engagement of these engagement claws A1 and B1, the movement of the transport cart 1 in the traveling direction and in the vehicle width direction (left-right direction) with respect to the travel surface F are restricted.

[0056] Specifically, the engagement claws A1 of the front pair of first engagement parts 4A are engaged with the corresponding pair of anchors A provided on the front side of the fixed rail R. In addition, the engagement claws B1 of the rear pair of second engagement parts 4B are engaged with the corresponding pair of anchors A provided on the rear side of the fixed rail R. The rear pair of second engagement parts 4B further include a locking mechanism 5 that is releasably locked with respect to the corresponding anchors A.

[0057] As the transport cart 1 moves in the advancing direction, the engaging claws B1 of the second engaging portions 4B engage with the corresponding anchors A, and accordingly, the locking mechanisms 5 are locked by hooking onto the frame upper portions A2 of the corresponding anchors A. Thus, the movement of the transport cart 1 in the backward direction (the backward direction of the vehicle) relative to the travel surface F is restricted.

[0058] like Figure 3 to Figure 4 As shown, the engagement claws A1 of the front pair of first engagement parts 4A and the engagement claws B1 of the rear pair of second engagement parts 4B are arranged at positions offset from each other in the vehicle width direction. Figure 5 As shown, by a simple operation of moving the transport cart 1 straightly in the traveling direction, the engaging claws A1 of each first engaging portion 4A and the engaging claws B1 of the second engaging portion 4B can be accurately engaged with the corresponding anchors A on the travel surface F. That is, the engaging claws A1 of each first engaging portion 4A and the engaging claws B1 of each second engaging portion 4B can be accurately engaged with only the corresponding anchors A without hitting against the non-corresponding anchors A.

[0059] like Figure 4 As shown, a pair of first snap-fitting parts 4A on the front side and a pair of second snap-fitting parts 4B on the rear side are respectively arranged at left-right symmetrical positions in the bottom of the cargo platform 2. A pair of first snap-fitting parts 4A on the front side are arranged at approximately the front end position in the bottom of the cargo platform 2. A pair of second snap-fitting parts 4B on the rear side are arranged at approximately the rear end position in the bottom of the cargo platform 2.

[0060] The arrangement interval W1 (center-to-center distance) of the engaging claws A1 of the front pair of first engaging parts 4A is narrower than the arrangement interval W2 (center-to-center distance) of the engaging claws B1 of the rear pair of second engaging parts 4B. Specifically, the engaging claws B1 of the rear pair of second engaging parts 4B are respectively arranged at the approximate outer end positions in the vehicle width direction at the bottom of the cargo bed 2.

[0061] Specifically, the engagement claws B1 of the rear pair of second engaging portions 4B are arranged in a manner that a gap T is left in the vehicle width direction from the inner side of each locking guide 7 provided at the outer end position in the vehicle width direction of the bottom of the cargo bed 2. The gap T in the vehicle width direction between these engagement claws B1 and the locking guide 7 is set to be larger than the corresponding anchors A (see FIG. 1 ) to be engaged by each engagement claw B1. Figure 1 ) is slightly wider and has approximately the same thickness as the outer frame side.

[0062] Therefore, if Fig.10As shown, the outer frame side portions of the corresponding anchors A are guided by the locking guides 7 to be guided between the locking guides 7 and the engaging claws B1 of the second engaging portions 4B as the transport cart 1 moves in the traveling direction. And, by this guidance, the engaging claws B1 of the second engaging portions 4B are properly engaged in the frames of the corresponding anchors A. Details will be described later.

[0063] like Figure 4 As shown, the engaging claws A1 of the front pair of first engaging parts 4A are arranged at a position closer to the inside of the vehicle width direction than the engaging claws B1 of the rear pair of second engaging parts 4B. Specifically, the engaging claws A1 of the front pair of first engaging parts 4A are arranged so as not to overlap with the engaging claws B1 of the rear pair of second engaging parts 4B in the vehicle width direction.

[0064] The front pair of front wheels 3A and the rear pair of rear wheels 3B constituting the travel unit 3 are respectively arranged at left-right symmetrical positions in the bottom of the cargo bed 2. The arrangement intervals W3 (center-to-center distances) of the left and right wheels of the front pair of front wheels 3A and the rear pair of rear wheels 3B are the same.

[0065] Thus, the front wheels 3A of the front side and the rear wheels 3B of the rear side are arranged so that the right wheels overlap each other in the vehicle width direction and the left wheels overlap each other in the vehicle width direction. The arrangement interval W3 of the front wheels 3A of the front side and the rear wheels 3B of the rear side in the vehicle width direction is wider than the arrangement interval W1 of the engaging claws A1 of the first engaging portion 4A of the front side, and is narrower than the arrangement interval W2 of the engaging claws B1 of the second engaging portion 4B of the rear side.

[0066] Specifically, the front wheels 3A and the rear wheels 3B are arranged so that the arrangement in the vehicle width direction partially overlaps with the engagement claws A1 of the first engagement portion 4A of the front pair. Also, the front wheels 3A and the rear wheels 3B are arranged so that the arrangement in the vehicle width direction does not overlap with the engagement claws B1 of the second engagement portion 4B of the rear pair.

[0067] The front pair of front wheels 3A is arranged behind the fitting claws A1 of the front pair of first engagement parts 4A, and the rear pair of rear wheels 3B is arranged ahead of the fitting claws B1 of the rear pair of second engagement parts 4B.

[0068] like Figure 6As shown in FIG. 1 , each locking mechanism 5 includes a locking arm 5B rotatably connected to the corresponding engagement claw B1 of each second engaging portion 4B via a support shaft 5A extending in the vehicle width direction, and a position adjustment bolt 5C mounted on the locking arm 5B. As the corresponding engagement claw B1 is engaged in the frame of each anchor A, the claw portion B2 at the front end of each locking arm 5B abuts against the frame upper portion A2 of each anchor A and is rotated upward, and then is hooked from above to the frame upper portion A2 of each anchor A by the biasing force of a spring (not shown) (see FIG. 1 ). Figure 7 ).

[0069] Therefore, if Figure 7 As shown, each locking arm 5B is in a state of sandwiching each anchor A between the claw portion B2 at the front end thereof and each engaging claw B1 to position each anchor A. Each locking arm 5B is formed into a double arm structure. Each position adjustment bolt 5C is inserted into each locking arm 5B formed into the above-mentioned double arm structure from the rear side in a threaded manner.

[0070] Each position adjustment bolt 5C shifts the positional relationship between the double arm structures of each locking arm 5B in the front-to-back direction by rotating the head of the rear end thereof. Thus, the distance between the claw portion B2 at the front end of each locking arm 5B and the frame upper portion A2 of each anchor A is adjusted. By this adjustment, the gap between the claw portion B2 of each locking arm 5B and the engaging claw B1 that sandwiches the frame upper portion A2 of each anchor A in the front-to-back direction is adjusted. As a result, each locking mechanism 5 can be locked relative to the corresponding anchor A in a state where looseness is suppressed.

[0071] like Figure 8 As shown, each locking mechanism 5 is released from the locked state with respect to each anchor A by the user grasping each locking arm 5B and rotating it in the direction opposite to the biasing direction of the spring (not shown).

[0072] like Figure 3 to Figure 4 As shown, at the bottom of the cargo bed 2, long plate-shaped engaging guides 6 extending downward from the left and right side edges are formed. Each engaging guide 6 is formed over the entire area in the front-rear direction along each side edge of the bottom of the cargo bed 2. Each engaging guide 6 is formed in a shape that is folded from the top end extending downward so as to further extend inward in the vehicle width direction in an eave-like manner.

[0073] The eave-shaped folded portion of each engagement guide 6 is formed so that the height direction is arranged in the same manner as each anchor member A provided on the running surface F (see Figure 1 ) overlapped and extended to a lower position. Fig. 9As shown, along with the movement of the transport trolley 1 in the traveling direction, the two anchors A on the rear side (near the front side) drill into the bottom of the cargo platform 2, whereby each engaging guide 6 makes its eave-shaped folded portion face the left and right outer sides of these anchors A from the outside in the vehicle width direction.

[0074] Furthermore, even if the transport trolley 1 turns in the vehicle width direction when moving in the traveling direction, each engaging guide 6 can guide each anchor A in the vehicle width direction so that each anchor A does not deviate from the right below the cargo bed 2 in the vehicle width direction by contacting with each anchor A in the vehicle width direction. Thus, along with the movement of the transport trolley 1 in the traveling direction, the engaging claws A1 of each first engaging portion 4A and the engaging claws B1 of the second engaging portion 4B can be engaged with the corresponding anchors A while guiding the two rear anchors A that first pass between the engaging guides 6.

[0075] like Figure 3 to Figure 4 As shown, a locking guide 7 extending in a long plate shape in the front-rear direction is overlapped and combined in a rear region of the bottom surface of each engaging guide 6 folded in an eave shape. Each locking guide 7 is formed in a shape extending inwardly in the vehicle width direction than each engaging guide 6. The inner side surface of each locking guide 7 in the vehicle width direction is formed in a surface shape extending parallel to the traveling direction of the transport cart 1. An inclined surface 7A is formed in a front region of the inner side surface of each locking guide 7 so as to gradually reduce the extension from each engaging guide 6 toward the front.

[0076] The inclined surface 7A of each lock guide 7 is formed in front of the fitting claw B1 of each second engagement portion 4B. In addition, the inner surface of each lock guide 7 is arranged at a distance T outside the fitting claw B1 of each second engagement portion 4B in the vehicle width direction.

[0077] like Fig.10 As shown, along with the movement of the transport cart 1 in the traveling direction, the two anchors A on the rear side (near the front side) approach the engaging claws B1 of the second engaging portions 4B from the front side, and thus, the locking guides 7 are arranged to the outside of the frame side portions outside these anchors A. Thus, between the inner side surfaces of the locking guides 7, the anchors A pass in a sandwiched state.

[0078] At this time, even if the anchors A sometimes approach in a staggered manner from the position directly opposite to the engaging claws B1 of the second engaging portions 4B in the vehicle width direction as the transport cart 1 moves in the traveling direction, the anchors A can be easily passed between the inner side surfaces of the locking guides 7 by being guided along the inclined surfaces 7A of the locking guides 7. Thus, the anchors A are guided to the position directly opposite to the engaging claws B1 of the second engaging portions 4B and are appropriately engaged with the engaging claws B1.

[0079] At the same time, through this guidance, the two anchors A on the front side (inner side) are also guided to the position facing the fitting claws A1 of each first engaging portion 4A, and are properly fitted with each fitting claw A1. Therefore, each locking mechanism 5 can be aligned to the position facing the frame upper parts A2 of the two corresponding anchors A on the rear side (near front side) and properly locked thereto.

[0080] To summarize the above, the transport cart 1 according to the present embodiment has the following structure. It should be noted that the reference numerals given in parentheses below are reference numerals corresponding to the respective structures shown in the above-mentioned embodiment.

[0081] That is, the transport trolley (1) is a trolley that can carry a transport object (W) and travel. The transport trolley (1) has a travel portion (3) that travels along a travel surface (F) and an engaging portion (4) that engages with an engaged portion (A) protruding from the travel surface (F) by moving in the travel direction of the vehicle. The engaging portion (4) has a first engaging portion (4A) and a second engaging portion (4B) that are arranged at the bottom of the trolley body (2) so as to be staggered in the vehicle width direction orthogonal to the travel direction of the vehicle and are respectively engaged with the corresponding engaged portion (A).

[0082] According to the above structure, the first engaging part (4A) and the second engaging part (4B) can be engaged with the corresponding engaged part (A) without abutting against the respectively non-corresponding engaged parts (A) by moving in the traveling direction of the vehicle. Therefore, the transport trolley (1) can be simply and accurately fixed to a predetermined position on the travel surface (F).

[0083] In addition, the running part (3) is arranged to be offset in the direction of travel of the vehicle compared to the first engaging part (4A) and / or the second engaging part (4B), and is arranged to be offset in the vehicle width direction compared to the first engaging part (4A) and / or the second engaging part (4B) arranged to be offset in the direction of retreat of the vehicle. According to the above structure, by moving in the direction of travel of the vehicle, the first engaging part (4A) and / or the second engaging part (4B) arranged to be offset in the direction of retreat of the vehicle of the running part (3) can be properly engaged with the corresponding engaged part (A) without causing the running part (3) to collide with the engaged part (A).

[0084] In addition, the first engaging portion (4A) and / or the second engaging portion (4B) has a locking mechanism (5) which locks the corresponding engaged portion (A) in a releasable manner. According to the above structure, the first engaging portion (4A) and / or the second engaging portion (4B) having the locking mechanism (5) can be fixed more accurately to the corresponding engaged portion (A).

[0085] In addition, the engaged portion (A) to be locked by the locking mechanism (5) is in the shape of a three-sided frame in the traveling direction view along the traveling direction of the vehicle, and is formed into a structure in which the locking mechanism (5) is locked to its frame upper portion (A2). The transport trolley (1) has a locking guide (7) which guides the locking mechanism (5) to a position facing the frame upper portion (A2) in the traveling direction of the vehicle by abutting against the vehicle width direction of the frame side portion of the engaged portion (A) to be locked by the locking mechanism (5). According to the above structure, the locking mechanism (5) can be locked to a more appropriately aligned state relative to the frame upper portion (A2) of the engaged portion (A) in the shape of a three-sided frame.

[0086] In addition, a pair of first engaging parts (4A) and a pair of second engaging parts (4B) are respectively provided in the vehicle width direction. The pair of first engaging parts (4A) are arranged to be offset in the vehicle travel direction than the pair of second engaging parts (4B), and the arrangement interval (W1) of the pair of first engaging parts (4A) is narrower than the arrangement interval (W2) of the pair of second engaging parts (4B).

[0087] According to the above structure, by providing a pair of first engaging parts (4A) and second engaging parts (4B) in the vehicle width direction at positions offset in the direction of travel of the vehicle, the transport trolley (1) can be more accurately fixed to a predetermined position on the travel surface (F). In addition, since the distance between the pair of first engaging parts (4A) provided on the front side of the direction of travel of the vehicle is narrower than the distance between the pair of second engaging parts (4B), compared with a case where this is not the case, the operation of engaging them with the corresponding engaged parts (A) can be visually simple.

[0088] In addition, the travel portion (3) is a travel wheel, and the travel wheel has a pair of rear wheels (3B) arranged in the vehicle width direction and a pair of front wheels (3A) arranged in the vehicle width direction at a position offset from the pair of rear wheels (3B) in the vehicle travel direction. The pair of first engaging portions (4A) are arranged offset from the pair of front wheels (3A) in the vehicle travel direction and inward in the vehicle width direction. The pair of second engaging portions (4B) are arranged offset from the pair of rear wheels (3B) in the vehicle backward direction and in the vehicle width direction.

[0089] According to the above structure, by using the traveling wheels for the traveling part (3), even if the transported object (W) is a heavy object, it can travel smoothly along the traveling surface (F). In addition, the pair of first engaging parts (4A) and the second engaging parts (4B) can be appropriately engaged with the corresponding engaged parts (A) without causing the pair of front wheels (3A) and the rear wheels (3B) to collide with the engaged parts (A).

[0090] In addition, in the structure of the above configuration, the pair of first engaging parts (4A) do not have a locking mechanism, and the pair of second engaging parts (4B) have a locking mechanism (5). According to the above structure, a user standing in the backward direction of the transport trolley (1) can easily perform the switching operation of locking / unlocking each locking mechanism (5).

[0091] In addition, the transport trolley (1) also has an engaging guide (6) that extends from the bottom of the trolley body (2) and guides the engaged portion (A) in a manner that does not deviate from directly below the trolley body (2) toward the vehicle width direction by abutting against the engaged portion (A) in the vehicle width direction. According to the above structure, by moving in the direction of travel of the vehicle, the engaged portion (A) engaged with the first engaging portion (4A) and / or the second engaging portion (4B) can be guided in a manner that does not deviate from directly below the trolley body (2) toward the vehicle width direction. As a result, the transport trolley (1) can be more easily fixed to a specified position on the travel surface (F).

[0092] In addition, a pair of the first engaging portion (4A) and the second engaging portion (4B) are respectively provided in the vehicle width direction. The pair of first engaging portions (4A) are arranged to be offset from the pair of front wheels (3A) toward the inner side in the vehicle travel direction and the vehicle width direction. The pair of second engaging portions (4B) are arranged to be offset from the pair of rear wheels (3B) toward the outer side in the vehicle backward direction and the vehicle width direction. The engaging guide (6) guides the engaged portion (A) engaged with the pair of second engaging portions (4B) in a manner that does not deviate from the bottom of the trolley body (2) toward the vehicle width direction by abutting against the engaged portion (A) engaged with the pair of second engaging portions (4B) from the outer side in the vehicle width direction.

[0093] According to the above structure, as the vehicle moves in the direction of travel, the engaged portion (A) that is engaged with the pair of second engaging portions (4B) and passes between the engaging guides (6) can be guided, while the pair of first engaging portions (4A) and the second engaging portions (4B) are engaged with the corresponding engaged portions (A). Thus, the transport trolley (1) can be more easily fixed to a predetermined position on the travel surface (F).

[0094] Second Implementation Method

[0095] Next, regarding the structure of the transport cart 1 according to the second embodiment of the present invention, Figures 11 to 13 To illustrate. Fig.11 As shown, in this embodiment, a downwardly opening escape hole 8 is formed in the middle portion in the front-rear direction of each engaging guide 6 and is bored through in the vehicle width direction. In addition, a manual sliding cover 9 is installed on the outer side of each engaging guide 6, which can switch between covering and opening each escape hole 8 from the outside by sliding in the front-rear direction.

[0096] like Fig.12 As shown in FIG. 1 , each escape hole 8 is arranged in a straight line with two anchors A on the rear side (near the front side) in the vehicle width direction by moving the transport cart 1 backward from the locked position relative to each anchor A. Each escape hole 8 is formed in a shape that allows the anchors A to pass sideways by opening the slide cover 9 from the state of being horizontally aligned with the two anchors A on the rear side and moving the transport cart 1 sideways (either left or right) (see FIG. 1 ). Fig.13 ).

[0097] like Fig.12 As shown, by retreating the transport trolley 1 to a position where each avoidance hole 8 and the two rear anchors A are arranged in a straight line in the vehicle width direction, the transport trolley 1 is in a state where the front-to-back direction does not overlap with the two front (back) anchors A. Therefore, by moving the transport trolley 1 laterally from this state, the transport trolley 1 can be moved to a position where it is released from the anchors A in the vehicle width direction. Therefore, when the transport trolley 1 is to be moved laterally, it is not necessary to retreat the transport trolley 1 to the rear side beyond the two rear (near front) anchors A and then move it laterally, and it can be easily moved laterally with a small amount of movement.

[0098] Each avoidance hole 8 can be beautifully covered by closing the sliding cover 9 so as not to be exposed to the outside, except when the transport trolley 1 is moved laterally. The structure other than the above is the same as that of the transport trolley 1 shown in the first embodiment. Therefore, the same reference numerals are given to the structure and the description is omitted.

[0099] 《Regarding other implementation methods》

[0100] As mentioned above, although embodiment of this invention was demonstrated using two embodiments, this invention can be implemented in various forms other than the said embodiment.

[0101] 1. The transported objects transported by the transport trolley of the present invention can be various vehicle equipment carried according to the specifications of the vehicle in addition to the storage rack. In addition, the transported objects can also be items other than vehicle equipment such as appliances, furniture, and tools.

[0102] 2. In addition to being composed of running wheels, the running part may also be composed of sliders or tracks that slide on the running surface. In addition, when the running part is composed of running wheels, the number of front wheels and rear wheels provided is not particularly limited. That is, the front wheels and rear wheels may each be composed of more than three or different numbers. In addition, the running wheels may also be a structure in which a middle wheel is provided between the front wheels and the rear wheels. The number of middle wheels provided is also the same as that of the front wheels and the rear wheels, and is not limited to a specific number.

[0103] 3. The engagement structure of the engaging portion and the engaged portion is not limited to a specific structure as long as the engaging portion is engaged with each other by moving the engaging portion relative to the engaged portion in the traveling direction of the vehicle. For example, the engaging portion provided on the transport trolley may be a frame-shaped member such as the anchor shown in the above embodiment, and the engaged portion provided on the travel surface may be a member that is engaged in the frame of the engaging portion such as the engaging claw shown in the above embodiment.

[0104] In addition, the engaging portion and the engaged portion may also be formed into a structure that elastically fits with each other by at least one of them having an elastic structure such as rubber or snap fit. In addition, the engaging portion and the engaged portion may fix the transport trolley to a predetermined position on the travel surface only by the sliding friction resistance based on the mutual engagement. The locking mechanism may be provided on the engaged portion in addition to the engaging portion. The locking mechanism may be provided on the first engaging portion in addition to the second engaging portion.

[0105] The number of the first engaging portion and the second engaging portion provided is not particularly limited. That is, the first engaging portion and the second engaging portion may be provided with one or more than three. In addition, the first engaging portion and the second engaging portion may be provided with different numbers. In addition, when at least one of the first engaging portion and the second engaging portion is provided with a plurality of portions, the first engaging portion and the second engaging portion may be provided in a staggered manner in the vehicle width direction.

[0106] One of the first engaging portion and the second engaging portion may be arranged on the inner side or the outer side in the vehicle width direction. In addition, one of the first engaging portion and the second engaging portion may be arranged on the front side or the rear side in the vehicle travel direction. The first engaging portion and the second engaging portion may be arranged in a staggered manner in a horizontal row in the vehicle width direction so that the arrangements in the vehicle travel direction overlap each other.

[0107] When a pair of first and second engaging parts are provided in the vehicle width direction and the pair of first engaging parts are arranged to be offset in the vehicle travel direction than the pair of second engaging parts, the arrangement interval of the pair of first engaging parts can be wider than the arrangement interval of the pair of second engaging parts.

[0108] The first engaging portion and the second engaging portion may be both arranged at the front side or the rear side of the traveling portion. Alternatively, the first engaging portion and the second engaging portion may be both arranged at the rear side of the front wheel constituting the traveling portion and at the front side of the rear wheel. Alternatively, the first engaging portion and the second engaging portion may be both arranged at the right side of the left wheel constituting the traveling portion and at the left side of the right wheel.

[0109] 4. In addition to the structure in which the running part and the engaging part are provided at the bottom of the cargo platform that becomes the main body of the transport trolley, the running part and the engaging part may also be provided at the supporting part (trolley main body) that supports the cargo platform. The locking guide and the engaging guide may also be a structure that is provided only on one side of the vehicle width direction of the trolley main body. In addition to abutting against the engaged part from the outside in the vehicle width direction, the locking guide and the engaging guide may also abut from the inside in the vehicle width direction. In addition, it is also possible to abut on both the outside and the inside in the vehicle width direction.

Claims

1. A transport trolley capable of carrying a transported object and traveling, wherein: have: A running part that runs along the running surface; and The engaging portion is engaged with the engaged portion protruding from the running surface by movement in the traveling direction of the vehicle. The engaging portion includes a first engaging portion and a second engaging portion, which are arranged at a bottom portion of the vehicle body so as to be staggered in a vehicle width direction orthogonal to the vehicle travel direction and are configured to engage with the corresponding engaged portions.

2. The transport trolley according to claim 1, wherein: The running portion is arranged to be offset from the second engagement portion in the vehicle advancing direction and is arranged to be offset from the second engagement portion disposed to be offset in the vehicle retreating direction of the running portion in the vehicle width direction.

3. The transport trolley according to claim 1, wherein: The running portion is arranged to be offset from the first engaging portion in the vehicle advancing direction and is arranged to be offset from the first engaging portion which is arranged to be offset in the vehicle retreating direction of the running portion in the vehicle width direction.

4. The transport trolley according to any one of claims 1 to 3, wherein: At least one of the first engaging portion and the second engaging portion includes a locking mechanism configured to releasably lock the corresponding engaged portion.

5. The transport trolley according to claim 4, wherein: The engaged portion to be locked by the locking mechanism has a frame upper portion and a frame side portion that are three-sided frame-shaped in a traveling direction view along the traveling direction of the vehicle, and the locking mechanism is locked to the frame upper portion of the engaging portion. The transport cart further includes a lock guide configured to guide the lock mechanism to a position facing the frame upper portion in the vehicle travel direction by abutting against the frame side portion of the engaged portion to be locked by the lock mechanism in the vehicle width direction.

6. The transport trolley according to claim 4, wherein: The first engaging portion and the second engaging portion are provided in a pair in the vehicle width direction, respectively. The pair of first engagement portions are arranged to be offset from the pair of second engagement portions in the vehicle travel direction, and the arrangement interval of the pair of first engagement portions is narrower than the arrangement interval of the pair of second engagement portions.

7. The transport trolley according to claim 6, wherein: The travel portion is a travel wheel having a pair of rear wheels arranged in the vehicle width direction and a pair of front wheels arranged in the vehicle width direction at a position offset from the pair of rear wheels in the vehicle travel direction. The pair of first engagement portions are arranged offset from the pair of front wheels to the inside in the vehicle travel direction and the vehicle width direction, and the pair of second engagement portions are arranged offset from the pair of rear wheels to the outside in the vehicle backward direction and the vehicle width direction.

8. The transport trolley according to claim 7, wherein: The pair of the first engagement parts does not include the locking mechanism, and the pair of the second engagement parts includes the locking mechanism.

9. The transport trolley according to any one of claims 1 to 3, wherein: The transport cart further includes an engagement guide extending from the bottom of the cart body and configured to guide the engaged portion in a manner that does not deviate from directly below the cart body in the vehicle width direction by contacting the engaged portion in the vehicle width direction.

10. The transport trolley according to claim 9, wherein: The first engaging portion and the second engaging portion are provided in a pair in the vehicle width direction, respectively. The travel portion is a travel wheel having a pair of rear wheels arranged in the vehicle width direction and a pair of front wheels arranged in the vehicle width direction at a position offset from the pair of rear wheels in the vehicle travel direction. The pair of first engaging portions are arranged to be offset from the pair of front wheels toward the inner side in the vehicle's advancing direction and the vehicle's width direction, and the pair of second engaging portions are arranged to be offset from the pair of rear wheels toward the outer side in the vehicle's backward direction and the vehicle's width direction. The engagement guide is configured to guide the engaged portion engaged with the pair of second engagement portions so as not to deviate from directly below the vehicle body in the vehicle width direction by contacting the engaged portion engaged with the pair of second engagement portions from the outer side in the vehicle width direction.

11. The transport trolley according to any one of claims 1 to 3, wherein: The traveling portion is a traveling wheel including a pair of rear wheels provided in a vehicle width direction and a pair of front wheels provided in the vehicle width direction at positions offset from the pair of rear wheels in a traveling direction of the vehicle.

12. A transport trolley configured to engage with a plurality of engaged portions provided on two rails provided on a travel surface, characterized in that: have: Trolley body; A travel portion, disposed at the bottom of the trolley body, and moving the transport trolley along the travel surface; and A plurality of engaging parts are provided at the bottom of the trolley body and are engaged with the plurality of engaged parts by moving in a first direction. The plurality of engaging portions include a plurality of first engaging portions configured to engage with a plurality of first engaged portions provided on a first track disposed in front of the two tracks in the first direction, and a plurality of second engaging portions configured to engage with a plurality of second engaged portions provided on a second track disposed in the rear of the two tracks in the first direction. The plurality of first engaging portions are arranged to be offset from the plurality of second engaging portions in a second direction intersecting the first direction and parallel to the bottom portion.

13. The transport trolley according to claim 12, wherein: In the second direction, the intervals between the plurality of first engagement portions are smaller than the intervals between the running portions, and the intervals between the plurality of second engagement portions are larger than the intervals between the running portions.

14. The transport trolley according to claim 12, wherein: In the second direction, the intervals between the plurality of second engagement portions are smaller than the intervals between the running portions, and the intervals between the plurality of first engagement portions are larger than the intervals between the running portions.

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