trolley

Abstract

To provide a dolly that is able to prevent an injury due to pinching of a finger when an operation for unlocking a brake is performed simultaneously with an operation of a handle portion.SOLUTION: A dolly 10 includes: a dolly body 12 on which a load can be put; wheels 14, 16 capable of moving the dolly body 12; a handle portion 18 capable of manually steering the dolly 10 in a traveling direction; a brake mechanism 17 that performs braking of the wheel 16; a brake release lever 72 that can be pressed by a gripping operation, in which this lever is gripped together with the handle portion 18, to release the braking of the wheel 16; a brake release rod 70 that is linked to the brake release lever 72 and makes the brake mechanism 17 movable; and a covering structure 74 as finger pinch avoidance means that avoids a finger being pinched during the gripping operation for gripping the brake release lever 72 together with the handle portion 18.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a truck, and more particularly to a truck having a handle portion that can be moved and steered by pushing it manually. [Background technology]

[0002] Conventional trolleys that form the background of the present invention include a loading platform for loading cargo, casters for movement, a handle for manually driving and steering the trolley, and an audio output means for emitting a warning sound in the surrounding area. A switch-cum-operation lever is provided that, when gripped together with the handle, causes the audio output means to output audio or to be ready to output audio, and by operating the switch-cum-operation lever together with the operation of the handle, the audio output means emits a warning sound or is ready to emit a warning sound (see, for example, Patent Document 1).

[0003] This trolley has two holes on the top of the handle, through which the upper ends of the Y-shaped member pass. The Y-shaped member is a metal material roughly Y-shaped. The upper ends of the Y-shaped member pass through two holes on the top of the handle and are connected to the switch / operation lever. The lower part of the Y-shaped member is made of a metal rod, the upper part of which branches into two and extends, and the upper ends of the branched members extend further vertically upward and are connected to the switch / operation lever. The lower end of the Y-shaped member is fitted with the upper end of the vertical rod. On this trolley, by applying pressure to the switch / operation lever (gripping action), i.e., by simultaneously grasping and operating the handle and the switch / operation lever with one hand, the audio output switch is turned on and the brake lock is released.

[0004] With the above-described structure, this conventional trolley allows the brake lock to be released when the trolley with audio alarm is to be driven, and when the handle is folded up (when the trolley with audio alarm is not to be driven), the handle and the switch / operating lever come into contact, making it impossible to release the brake lock, thereby improving safety. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6792109 (Figs. 1, 2, and 6) Summary of the Invention [Problem to be solved by the invention]

[0006] However, as shown in Figures 35 and 36, in such a conventional trolley 1, when the brake lock is released by applying pressure (gripping action) to the switch-cum-operating lever 5 together with the handle 3 with the hand, the Y-shaped member 7 moves up and down in conjunction with the movement of the switch-cum-operating lever 5. In this case, there was a risk of fingers being pinched (caught) in the gap G between the two holes 9 provided in the upper part of the handle and the upper ends (movable parts) 7a of the Y-shaped member 7 that penetrate the holes 9. More specifically, there was a risk of a finger being pinched in the gap G by the movable parts 7a, resulting in injury.

[0007] Therefore, a primary object of the present invention is to provide a trolley that can prevent injuries to fingers when operating the handle and unlocking the brake at the same time. [Means for solving the problem]

[0008] The present invention according to claim 1 provides a trolley comprising: a trolley body on which cargo can be loaded; wheels that allow the trolley body to move; a handle portion that allows the trolley body to be manually driven and steered; a brake mechanism that brakes the wheels; a brake release lever that can be pressed by a gripping action that is held together with the handle portion and that releases the brakes on the wheels; and a brake release rod that is linked to the brake release lever and that operates the brake mechanism, the handle portion having a horizontal portion and a vertical portion and formed in an inverted U shape, and including a through hole that passes through in a direction perpendicular to the horizontal portion, the brake mechanism including the brake release rod that is inserted into the through hole in the handle portion and is disposed so as to be movable up and down, and the handle portion and / or the brake release rod have a finger pinch mechanism that prevents part of a finger from being pinched in a gap between the through hole and the brake release rod when the brake release lever is gripped together with the handle portion and gripped. the finger pinch prevention means includes a shielding structure that surrounds the peripheral portion of the gap between the through hole and the brake release rod and shields the gap, the shielding structure including a first shielding member that has an insertion hole that can communicate with the through hole and is inserted in the axial direction of the handle portion to surround the peripheral portion of the gap and shield the gap, a second shielding member that is inserted in the axial direction of the brake release rod and is biased by a biasing member so as to surround the peripheral portion of the gap and shield the gap, a positioning spacer that is inserted in the axial direction of the brake release rod and is disposed above the biasing member so as to position the upper end of the second shielding member at a position that surrounds and shields the gap, and another positioning spacer that is inserted in the axial direction of the brake release rod and cooperates with the positioning spacer to position the biasing member at a predetermined position in the axial direction of the brake release rod. In the present invention according to claim 1, the finger pinch prevention means prevents fingers from being pinched when gripping the brake release lever together with the handle portion. The first and second shielding members of the shielding structure surround the periphery of the gap between the through hole and the brake release rod. This blocks and shields the gap between the through hole and the brake release rod. This prevents a part of a finger from being pinched in the gap. Furthermore, in the present invention according to claim 1, in particular, a biasing member is disposed between the positioning spacer and the other positioning spacer, so that by adjusting the position of the other positioning spacer, it is possible to adjust the biasing force of the biasing member, and therefore the pressing force of the biasing member on the positioning spacer, and ultimately the upward pressing force of the second shielding member, can be adjusted. Therefore, the load when gripping the brake release lever together with the handle portion can be appropriately adjusted. The present invention according to claim 2 is an invention dependent on the invention according to claim 1, and is a bogie characterized in that the first shielding member is formed in a cylindrical shape with an approximately semicircular cross section. The present invention according to claim 2 has the same functions and effects as the invention according to claim 1. The present invention of claim 3 is an invention dependent on the invention of claim 1, and is a bogie characterized in that the first shielding member is formed into a cylindrical shape with a C-shaped cross section having an opening in part of its circumferential direction and extending from one end to the other end in its axial direction. The present invention according to claim 3 has the same functions and effects as the invention according to claim 1. The present invention according to claim 4 is an invention dependent on the invention according to claim 1, wherein the first shielding member is the This is a bogie characterized by having a continuous corrugated portion on its outer surface. The present invention as defined in claim 4 has the same action and effect as the invention as defined in claim 1, and by providing a wavy portion, slippage when gripping the grip portion of the handle is prevented, making the grip portion easier to grip. The present invention according to claim 5 is an invention dependent on any one of claims 1 to 4, and further comprises a brake release rod having a rod body in an axially intermediate portion thereof, the rod body having a groove extending outward in the left-right direction as viewed from the right side. Widening section and Widening section is a bogie characterized in that the handle portion is disposed behind the support pillar portion when viewed from the front, and inside the support pillar portion when viewed from the right side. The present invention according to claim 5 has the same functions and effects as the invention according to any one of claims 1 to 4, and also has a brake release rod. Widening section Because is formed, Left and right widening sections This makes it easy to load long items that are longer than the longitudinal length of the carriage body. [Effects of the Invention]

[0009] According to the present invention, a cart can be obtained that can prevent injuries caused by pinching fingers when operating the handle and unlocking the brake at the same time.

[0010] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, which proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a front view showing a bogie according to a first embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a right side view of FIG. [Figure 3] FIG. 2 is a plan view of FIG. [Figure 4] FIG. 2 is an enlarged view of a main part of the brake mechanism applied to the first embodiment, showing the brake in an ON state. [Figure 5] FIG. 2 is an enlarged view of a main part of the brake mechanism applied to the first embodiment in a brake-off state. [Figure 6] FIG. 10 is an enlarged view of a main part showing a finger pinching prevention means applied to the first embodiment. [Figure 7] FIG. 10 is a front view showing a bogie according to a second embodiment of the present invention. [Figure 8] FIG. 8 is a right side view of FIG. 7. [Figure 9] FIG. 8 is a plan view of FIG. [Figure 10] FIG. 10 is a front view showing a bogie according to a third embodiment of the present invention. [Figure 11] FIG. 11 is a right side view of FIG. [Figure 12] FIG. 11 is a plan view of FIG. [Figure 13] FIG. 10 is an enlarged view of a main part of a brake mechanism applied to the second and third embodiments, showing the brake in an ON state. [Figure 14] FIG. 10 is an enlarged view of a main part of the brake mechanism applied to the second and third embodiments in a state where the brake is turned off. [Figure 15] FIG. 10 is a front view showing a bogie according to a fourth embodiment of the present invention. [Figure 16] FIG. 16 is a right side view of FIG. [Figure 17] FIG. 16 is a plan view of FIG. [Figure 18] FIG. 13 is an enlarged view of a main part showing a finger-trapping prevention means applied to a fourth embodiment. [Figure 19] FIG. 2 is an enlarged view of a main part showing a finger pinch prevention means and its surroundings that are applied to the first embodiment. [Figure 20] FIG. 11 is an enlarged view of a main part showing a finger trapping prevention means and its surroundings that are applied to a second embodiment. [Figure 21] 21A and 21B are enlarged views of essential parts showing another example of finger pinching prevention means that can be applied to the first, second, and third embodiments, in which FIG. 21A is a side view of the essential parts and FIG. 21B is a perspective view of the essential parts. [Figure 22] FIG. 10 is an enlarged view of a main portion showing yet another example of finger-trapping prevention means that can be applied to the first, second, and third embodiments. [Figure 23] 23A is a front view showing a fifth embodiment of a trolley according to the present invention, and in particular a front view showing an example of a folding mechanism for a handle section that can be applied to a trolley according to the present invention, where (A) in FIG. 23 is a front view showing the folding operation of the handle section, (B) in FIG. 23 is a front view showing the state of the handle section before folding, and (C) in FIG. 23 is a front view showing the state of the handle section after folding. [Figure 24] 24A and 24B are enlarged views of the main parts of the folding mechanism shown in FIG. 23, where FIG. 24A is an enlarged front view of the main parts showing the normal state before folding of the handle part begins, and FIG. 24B is an enlarged left side view of the main parts of FIG. 24. [Figure 25] 25A and 25B are enlarged views of the main parts of the folding mechanism shown in FIG. 23, where FIG. 25A is an enlarged front view of the main parts showing the state when folding of the handle part starts, and FIG. 25B is an enlarged left side view of the main parts of FIG. 25. [Figure 26] These are enlarged views of the main parts of the folding mechanism shown in Figure 23, where (A) of Figure 26 is an enlarged front view of the main parts showing the state in the middle of the folding operation of the handle section, and (B) of Figure 26 is an enlarged front view of the main parts showing the state when folding of the handle section is completed. [Figure 27] 27A and 27B are front views of a main part of an example of a brake mechanism that can be applied to the cart having the folding mechanism shown in Fig. 23, in which Fig. 27A is an enlarged front view of a main part of the brake mechanism in an ON state, and Fig. 27B is an enlarged front view of a main part of the brake mechanism in an OFF state. [Figure 28] FIG. 28 is a left side view of FIG. 27(A). [Figure 29] FIG. 29 is a plan view of FIG. 28. [Figure 30] FIG. 10 is a side view showing a bogie according to a sixth embodiment of the present invention. [Figure 31] FIG. 31 is a plan view of FIG. 30. [Figure 32] FIG. 31 is an end view of AA in FIG. 30. [Figure 33] FIG. 11 is a front view showing a bogie according to a seventh embodiment of the present invention. [Figure 34] FIG. 13 is a front view showing a bogie according to an eighth embodiment of the present invention. [Figure 35] 1 is a perspective view of a main part showing an example of a conventional bogie that forms the background of the present invention. [Figure 36] FIG. 10 is another perspective view of the main part of an example of a conventional bogie that forms the background of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] (First Example) Fig. 1 is a front view showing a bogie of a first embodiment according to the present invention. Fig. 2 is a right side view of Fig. 1, and Fig. 3 is a plan view of Fig. 1. Fig. 4 is an enlarged view of a main part of a brake mechanism applied to the first embodiment, in a state where the brake is ON. Fig. 5 is an enlarged view of a main part of the brake mechanism applied to the first embodiment, in a state where the brake is OFF. The bogie 10 includes a bogie body 12 that is rectangular in plan view and made of, for example, metal, and that can carry cargo. Under the bogie body 12, swivel wheels 14 are arranged on one side in the longitudinal direction, and fixed wheels 16 are arranged on the other side. In this case, two swivel wheels 14 are provided at the front lower part of the bogie body 12, spaced a predetermined distance apart in the width direction, and two fixed wheels 16 are provided at the rear lower part of the bogie body 12, spaced a predetermined distance apart in the width direction. The swivel wheels 14 and fixed wheels 16 refer to wheels (rims) with rubber tires or the like attached to the outside. The bogie body 12 is movable by the swivel wheels 14 and fixed wheels 16.

[0013] Furthermore, two push-type handle units 18, which also serve as support units 18a that enable manual travel and steering of the cart body 12, are arranged upright on the cart body 12. In this case, the two handle units 18 have the same structure, so only one of the handle units 18 will be described below. As shown in FIGS. 2, 3, and 1, the handle unit 18 includes two support columns 18a that stand vertically on the top surface of the bogie body 12. The upper sides of the two support columns 18a have inclined sections 18b that are inclined outward in the longitudinal direction of the bogie body 12, as shown in FIG. 1, and a single grip section 18c is horizontally disposed between the inclined sections 18b of the two support columns 18a. The entire handle unit 18 is formed in an inverted U-shape when viewed from the side, as shown in FIG. 2. The lower ends of the support columns 18a of the two handle units 18 are fixed to brackets 20 that are rectangular in plan view and disposed at the four corners of the top surface of the bogie body 12 by fastening means such as bolts or welding. Each of the two handle units 18 is formed, for example, by bending a metal pipe or the like into a U-shape.

[0014] 1 and 2, the cart 10 further includes a wire mesh fence 22 that surrounds the upper four periphery of the cart body 12 and is attached to the four posts 18a of the two handle sections 18. A holding fitting 24 that is swingable and adapted to hold onto the post 18a is disposed at the end of one of the wire mesh fences 22, and a locking fitting (not shown) that slides up and down and is engaged with a hook (not shown) at the tip of the holding fitting 24 when pushed down is disposed at the end of the other wire mesh fence. Therefore, in this bogie 10, the wire mesh fence 22 can be attached to and detached from the bogie body 12 by the locking relationship between the holding fittings 24 and the locking fittings (not shown), so the wire mesh fence 22 can be attached and detached easily and quickly without the need for tools, bolts, etc. In the case of transporting large or small items with one bogie 10, the wire mesh fence 22 is attached to the bogie body 12 only when transporting small items, and the wire mesh fence 22 is removed from the bogie body 12 when transporting large items.

[0015] Next, the brake mechanism 17 of the carriage 12 of this first embodiment will be described with particular reference to Figures 4, 5, 1 and 2. As shown in Figures 1 and 2, the brake mechanism 17 is provided on each of the two fixed wheels 16. Since the brake mechanisms 17 that brake the two fixed wheels 16 each have the same configuration, one of the brake mechanisms 17 (for example, the brake mechanism 17 that brakes the fixed wheel 16 on the left side as viewed in Figure 2) will be described below. 4 and 5, the brake mechanism 17 includes a drum brake assembly 30 having a drum brake (for example, an inward-expanding drum brake system) that applies braking by pressing a friction material against the inner surface of the drum. The drum brake assembly 30 includes a brake drum 32, and on the inside of the brake drum 32, substantially semicircular arc-shaped brake shoes 34, 34 are disposed facing each other so that one ends 34a, 34a of each brake shoe sandwich the periphery of a cam 36 and the other ends 34b, 34b of each brake shoe sandwich the periphery of a pin 38. One ends of the two brake shoes 34, 34 are supported rotatably with the pin 38 (pivot portion) as a fulcrum, and the cam 36 is sandwiched between the other ends.

[0016] Brake linings 40 are attached to the outer circumferential surfaces of the brake shoes 34. The brake shoes 34 are interconnected by two tension springs 42. When the brake mechanism 17 is in an inoperative state (OFF state), the two tension springs 42 are pulled inward. A cam lever 46 is connected and fixed to a fixed shaft 44 of the cam 36. In this case, the cam lever 46 has a length and has a first connecting hole 46a, for example, having a square cross section, on one side in the length direction, a second connecting hole 46b, for example, having a circular cross section in the middle part in the longitudinal direction, and a third connecting hole 46c, for example, having a circular cross section, on the other side in the length direction. The fixed shaft 44 of the cam 36 is fitted into the first connecting hole 46a of the cam lever 46, and is connected and fixed thereto. On the other hand, the axle 48 of the fixed wheel 16 is rotatably supported at a predetermined position below the bogie body 12 by the axle unit 13 including two brackets 49, 49.

[0017] 1 and 4, the two brake shoes 34, 34 are stretched outward, so the two brake shoes 34, 34 spread outward and are pressed against the inner peripheral surface 32a of the brake drum 32, and the resulting frictional force brakes the rotation of the fixed wheel 16. When the cam lever 46 is displaced to the right from the position in Figures 1 and 4 as shown in Figure 5, for example, in other words, when the fixed shaft 44 of the cam 36 is rotated clockwise as viewed in Figure 5 by a predetermined cam angle, the brake mechanism 17 is put into a non-operating state (OFF state), and the axle 48 of the fixed wheel 16 rotates freely. That is, when the cam lever 46 is displaced to the right, the cam 36 rotates clockwise and returns to its original state, so that the two tension springs 42, 42 pull the brake shoes 34, 34 inward, separating the brake shoes 34, 34 from the brake drum 32 and releasing the brake. In the bogie 12 of this first embodiment, by gripping the handle portion 18 and a brake release lever 72 (described later), the brake release lever 72 is pushed downward, bringing the bogie 12 into an inoperative state (OFF state) where the brake is not applied, and the bogie 12 can be run and steered by pushing the handle portion 18 with a hand.

[0018] The brake mechanism 17 further includes a link device 50. The link device 50 includes a biasing member 52 that is engaged with the above-mentioned cam lever 46 and that positions the cam lever 46 in a state where it is displaced, for example, to the left as viewed in FIGS. 4 and 5, thereby placing the brake in an applied state. The biasing member 52 is formed of a spring or the like, and one end thereof is engaged with the second connecting hole 46b of the cam lever 46. The other end of the biasing member 52 is engaged with, for example, a tension bolt 54 that serves as a tension portion. The tension bolt 54 is supported by, for example, a bracket 56 that has an L-shaped cross section.

[0019] The tension bolt 54 includes a flat portion 54a with a generally rectangular cross section to which the other end of the biasing member 52 is engaged, and threaded portions 54b, 54c connected to the flat portion 54a and extending in the axial direction. The tension bolt 54 is inserted into a short side portion 56a of a bracket 56 and is supported and fixed by a fixing means 58 such as a nut to prevent it from coming loose. Therefore, for example, as seen in Figures 4 and 5, by adjusting the protruding length of the threaded portion 54c that protrudes leftward from the short side portion 56a of the bracket 56 with the fixing means 58, the tensile force of the biasing member 52, i.e., the biasing force, can be appropriately set as needed.

[0020] 1, 2, 4, and 5, the link device 50 includes an operating rod 60 that is engaged with the cam lever 46. One axial end of the operating rod 60 is engaged with the third connecting hole 46c of the cam lever 46, and the other axial end is engaged with one longitudinal end of a first link arm 62, which will be described later. The other axial end of the operating rod 60 is fixed to one longitudinal end of the first link arm 62 by fixing means 61, which may include a nut, a washer, a wheel nut, a spacer, a split pin, or the like.

[0021] On the other hand, as shown in FIGS. 1, 2, 4, and 5, the link device 50 includes a link shaft 64. The link shaft 64 is formed, for example, in a cylindrical shape. The link shaft 64 is disposed near the rear end of the bogie body 12 by two bracket portions 66. The two bracket portions 66 are disposed on both sides of the rear side of the bogie body 12 in the width direction. As shown in FIGS. 2 and 4, the bracket portion 66 includes, for example, a rectangular base plate 66a disposed at the lower rear end of the bogie body 12. A rectangular bracket plate 66b extends perpendicularly downward from one end of the base plate 66a in the width direction relative to the bogie body 12. The base plate 66a is fixed by fixing means 67 such as bolts and nuts. The bracket plate 66b is fixed to one end of the base plate 66a in the width direction by welding or the like. The link shaft 64 is inserted between the two bracket plates 66b, 66b, and is supported so as to be freely rotatable. The other end of the first link arm 62 in the longitudinal direction is fixed to the link shaft portion 64 by a fixing means such as welding.

[0022] 1, 2, 4, and 5, a second link arm 68 is fixed to the link shaft 64. One longitudinal end of the second link arm 68 is fixed to the link shaft 64 by a fixing means such as welding, and the other longitudinal end is fixed to the brake release rod 70. As shown in FIGS. 1 and 2, the brake release rod 70 includes a rod main body 70a extending in the vertical direction. A tilting portion 70b is formed at the axial upper end of the rod main body 70a and is disposed substantially parallel to the tilting portion 18b of the handle portion 18. The tilting portion 70b is formed, for example, by a bent portion bent in a dogleg shape. A vertical portion 70c is formed at the tip of the tilting portion 70b and extends vertically upward from the tip of the tilting portion 70b. The other longitudinal end of the second link arm 68 is fixed to the axial lower end of the rod body 70a of the brake release rod 70 by fixing means 69 including a nut, washer, wheel nut, spacer, split pin, etc.

[0023] Furthermore, a threaded portion (not shown) is provided by tapping at the upper end (tip) in the axial direction of the vertical portion 70c of the brake release rod 70. The tip of the vertical portion 70c of the brake release rod 70 is inserted into the grip portion 18c of the handle portion 18, as shown in FIGS. 1 and 2, for example. In this case, the handle portion 18 has two through holes 19, 19, each having a circular cross section, spaced a predetermined distance apart in the longitudinal direction of the grip portion 18c, and the tip of the vertical portion 70c of the brake release rod 70 is inserted into the through holes 19, 19. A brake release lever 72 is attached to the upper end of the vertical portion 70c. The brake release lever 72 is attached so as to be spaced a predetermined distance vertically from the grip portion 18c of the handle portion 18 and to be disposed parallel to the grip portion 18c. As shown in Figures 1 and 2, the brake release lever 72 is formed, for example, in the shape of a trough with a semicircular cross section, and has attachment holes (not shown) for attaching the brake release rod 70 at a position in the middle of its length that is spaced a predetermined distance in the length direction. The brake release rod 70 is inserted through the attachment hole and attached to the brake release lever 72 by an attachment means (not shown) such as a slotted head screw.

[0024] Furthermore, the dolly 10 is provided with a finger pinch prevention means for preventing finger injury when operating the handle portion 18 and simultaneously unlocking the brake. The finger pinch prevention means prevents fingers from being pinched when gripping the brake release lever 72 together with the handle portion 18, and includes a shielding structure 74 that surrounds the periphery of a gap G1 between the through-holes 19, 19 of the handle portion 18 and the vertical portion 70 c of the brake release rod 70 and shields the gap G1. The shielding structure 74 includes, for example, two shielding members (hereinafter simply referred to as "first shielding members") 76, 76 that are arranged at a predetermined interval in the axial direction of the handle portion 18. The two first shielding members 76, 76 are each formed, for example, in a cylindrical shape with a substantially semicircular cross section, and are fitted at a predetermined interval in the axial direction of the grip portion 18 c of the handle portion 18. 2 and 19, the first shielding member 76 has an insertion hole 76a, for example, having a circular cross section, located on an axis that bisects the semicircular arc and at a position that can communicate with the through-hole 19 of the handle portion 18. The first shielding member 76 is formed of a flexible and elastic resin material, and is preferably formed of, for example, a foamed resin material or a flexible rubber material. The first shielding member 76 is fitted into the grip portion 18c of the handle portion 18 so that the through-hole 19 of the handle portion 18 and the insertion hole 76a of the first shielding member 76 communicate with each other.

[0025] The first shielding member 76 is not limited to a cylindrical member with a substantially semicircular cross section, and may be formed, for example, as a cylindrical member with a C-shaped cross section, having an opening 76b in a portion of its circumference and extending from one end to the other in the axial direction, as shown in Figures 21(A) and 21(B). The first shielding member 76 may also have a continuous corrugated portion 76c on its outer circumferential surface, as shown in Figure 22. The provision of this corrugated portion 76c prevents slippage when gripping the grip portion 18c of the handle portion 18, making the grip portion 18c easier to grip.

[0026] In this case, when the diameter of the vertical portion 70c of the brake release rod 70 is φ1, the diameter of the through-hole 19 in the handle portion 18 is φ2, and the diameter of the insertion hole 76a of the first shielding member 76 is φ3, it is preferable that these be set so that φ1≦φ3<φ2, and it is even more preferable that they be set so that φ1<φ3<φ2. In the dolly 10 according to the first embodiment, since φ1<φ3<φ2 is set, in this shielding structure 74, the first shielding member 76 surrounds the peripheral portion of the gap G1 between the through-hole 19 in the handle portion 18 and the vertical portion 70c of the brake release rod 70, shielding the gap G1 so as to close the gap G1. This shields the gap G1 between the through-hole 19 and the brake release rod 70 so as to close the gap G1. This prevents injury to a finger caused by part of the finger being caught in the gap G1.

[0027] Furthermore, the dolly 10 according to the first embodiment further includes another shielding structure 78 as a finger pinch prevention means for preventing fingers from being pinched. 1, 2, 6 and 19, the shielding structure 78 includes a shielding member (hereinafter simply referred to as the "second shielding member") 78a that is inserted into the axial upper end of the brake release rod 70. The second shielding member 78a is formed, for example, in a cylindrical shape, and is inserted into the vertical portion 70c of the brake release rod 70. The second shielding member 78a is formed, for example, from a collar.

[0028] The second shielding member 78a is constantly biased by a biasing member 78b such as a coil spring so as to shield the gap G2 between the insertion hole 76a of the first shielding member 76 and the vertical portion 70c of the brake release rod 70. The second shielding member 78a is configured so that a cylindrical positioning spacer 78c formed, for example, from a collar, positions the upper end of the second shielding member 78a at a position where it can surround and shield the peripheral portion of the gap G2. 1 and 6, the brake release rod 70 is provided with another positioning spacer 78d on the tip side of the tilting portion 70b of the brake release rod 70. The other positioning spacer 78d is positioned at a desired position in the axial direction of the tilting portion 70b by, for example, a hexagon socket set screw 78e. Furthermore, a biasing member 78b is disposed between the positioning spacer 78c and the positioning spacer 78d so as to straddle the boundary between the inclined portion 70b and the vertical portion 70c. In this case, by adjusting the position of the positioning spacer 78d, it is possible to adjust the biasing force of the biasing member 78b, and therefore the pressing force of the biasing member 78b on the positioning spacer 78c, and therefore the upward pressing force of the second shielding member 78. Therefore, the load when gripping the brake release lever 72 together with the handle portion 18 can be appropriately adjusted.

[0029] In the dolly 10 according to the first embodiment, the first shielding member 76 always surrounds the periphery of the gap G1 between the through-hole 19 of the handle portion 18 and the vertical portion 70c of the brake release rod 70, thereby providing shielding to close the gap G1, and the second shielding member 78a always surrounds the periphery of the gap G2 between the insertion hole 76a of the first shielding member 76 and the vertical portion 70c of the brake release rod 70, thereby providing shielding to close the gap G2. This makes it possible to more stably and securely prevent injuries to fingers caused by parts of the fingers getting caught in the gaps G1 and G2.

[0030] Next, the operation of the brake mechanism 17 of the carriage 10 according to the first embodiment will be described. The carriage 10 is normally in a braked state. To manually push the dolly 10 and move it, the user simply grasps the brake release lever 72 and the grip portion 18c of the handle portion 18 and presses the brake release lever 72 against the grip portion 18c of the handle portion 18. Specifically, when the brake release lever 72 is pressed downward, the brake release rod 70 is displaced downward. When the brake release rod 70 is displaced downward, the second link arm 68 is pressed downward with the link axle 64 as the fulcrum. As a result, the first link arm 62 rotates clockwise, for example, as viewed in FIG. 5, with the link axle 64 as the fulcrum. When the first link arm 62 rotates clockwise, the operating rod 60 is pulled toward the rear of the dolly body 12. Therefore, the operating rod 60 also pulls the cam lever 46 rearward, causing the cam fixed shaft 44 to rotate clockwise, moving the cam lever 46 from its left position to its right position as viewed in FIG. 5. In this way, the drum brake assembly 30 is actuated, the cam lever 46 rotates the cam fixed shaft 44, and in conjunction with this, the cam 36 pulls the brake shoes 34, 34 back inward. At this time, the brake linings 40, 40 and the inner peripheral surface 32a of the brake drum 32 of the fixed wheel 16 are separated, resulting in a disengaged brake state.

[0031] Conversely, to apply the brakes, simply release the brake release lever 72 and the grip portion 18c of the handle portion 18. In other words, when the brake release lever 72 is returned to its original state, a force in the opposite direction acts on the above-mentioned components, and the cam lever 46 returns from the right-hand position to the left-hand position as viewed in Figure 5 (see Figure 4). At this time, the brake shoes 34, 34 spread outward, pressing the brake linings 40, 40 against the inner circumferential surface 32a of the brake drum 32 of the fixed wheel 16, thereby applying braking to the fixed wheel 16.

[0032] (Second Example) Fig. 7 is a front view showing a truck according to a second embodiment of the present invention, Fig. 8 is a right side view of Fig. 7, and Fig. 9 is a plan view of Fig. 7. This second embodiment differs from the first embodiment described above mainly in the structure of the link device of the brake mechanism 17 and the shielding structure of the finger pinch prevention means. In this second embodiment, components with the same reference numerals as those in the first embodiment have substantially the same structure and provide the same functions and effects as those of the first embodiment, and therefore detailed explanations of the structure, functions and effects will be omitted. That is, in the link device 50 of the bogie 10 of the first embodiment, the first link arm 62 and the second link arm 68 are each separately fixed to the link shaft portion 64 as shown in Figures 1, 2, 4, and 5, but in the link device 50 of the bogie 10 of the second embodiment, the first link arm 62 and the second link arm 68 are integrally formed, for example, in an L-shape by a fixing means such as welding as shown in Figures 7, 8, 13, and 14. One end side of the first link arm 62 and the second link arm 68 in the length direction serves as a connecting portion that connects the first link arm 62 and the second link arm 68, and the link shaft portion 64 is inserted into and fixed to the connecting portion of the first link arm 62 and the second link arm 68. In this case, as shown in Figures 7 and 8, the other axial end of the operating rod 60 is fixed to one longitudinal end of the first link arm 62 by fixing means 61' including a nut, a washer, a wheel nut, a spacer, a split pin, etc. The other longitudinal end of the second link arm 68 is fixed to the axial lower end of the rod body 70a of the brake release rod 70 by fixing means 69' including a nut, washer, wheel nut, spacer, split pin, etc. In the bogie 10 of the second embodiment, compared to the bogie 10 of the first embodiment, the rotational force of the second link arm 68 caused by the pressing force when the brake release lever 72 and the grip portion 18c of the handle portion 18 are gripped and the brake release lever 72 is pressed downward can be directly linked to the first link arm 62. Therefore, the braking force on the fixed wheel 16 can be implemented and applied without loss.

[0033] Furthermore, in the finger pinch prevention means for the bogie 10 of the first embodiment, the second shielding member 78a of the shielding structure 78 is inserted into the vertical portion 70c of the brake release rod 70, as shown in Figures 1, 2, 6, and 19. In contrast, in the shielding structure 78 for the bogie 10 of the second embodiment, the brake release rod 70 does not have the inclined portion 70b or the vertical portion 70c, but is formed only by the rod main body 70a, and the second shielding member 78a is inserted into almost the entire middle portion of the rod main body 70a of the brake release rod 70, a predetermined distance from the lower and upper ends in the axial direction, as shown in Figures 7 and 8. In this case, the second shielding member 78a is formed as a collar with a longer overall length than that of the first embodiment. Furthermore, on the axial lower end side of the rod main body 70a, a biasing member 78a is disposed between a positioning spacer 78c and another positioning spacer 78d, and the upper end portion of the second shielding member 78a in the axial direction is positioned so as to abut against the first shielding member 76. In other words, the second shielding member 78a is configured to be positioned at a position where it can surround and shield the peripheral portion of the gap G2, as shown in Figures 7 and 8. While the bogie 10 of the first embodiment has two handle portions 18, 18 and a wire mesh fence 22 is provided on the bogie body 12, the bogie 10 of this second embodiment has one handle portion 18 and no wire mesh fence 22 is provided on the bogie body 12. In addition, in the bogie 10 of this second embodiment, a back plate portion 26 having a horizontally elongated rectangular shape is provided between the support portions 18a, 18a of the handle portion 18, approximately in the center of the axial middle portion of the support portions 18a, 18a, as shown in Figure 8. This back plate portion 26 functions as a reinforcing plate that reinforces the support portions 18a, 18a of the handle portion 18.

[0034] (Third Example) Fig. 10 is a front view showing a cart according to a third embodiment of the present invention, Fig. 11 is a right side view of Fig. 10, and Fig. 12 is a plan view of Fig. 10. This third embodiment differs from the second embodiment described above mainly in the structure of the brake release rod 70 of the brake mechanism 17 and the structure of the first shielding member 76 of the shielding structure of the finger pinch prevention means. In this third embodiment, components with the same reference numerals as those in the first and / or second embodiments described above have substantially the same structure and provide the same functions and effects as those of the components shown in the first embodiment, and therefore detailed explanations of the structure and functions and effects will be omitted. That is, in the link device 50 for the bogie 10 of the second embodiment, as shown in FIGS. 1 and 2, the rod bodies 70a, 70a of the brake release rods 70, 70 are arranged in parallel, but in this third embodiment, as shown in FIG. 11, the rod bodies 70a, 70a of the brake release rods 70, 70 are provided at the axially intermediate portions thereof with a pair of rods extending outward in the left-right direction as viewed in FIG. Widening section It has 71a. Widening section As shown in FIG. 10, 71a is disposed behind the support portion 18a of the handle portion 18, and as shown in FIG. 11, it is disposed inside the support portion 18a. Widening section An inclined portion 71b that is inclined inward of the support portion 18a is connected to the upper axial end of 71a. Furthermore, an extension portion 71c is connected to this inclined portion 71b, extending vertically upward from the tip of the inclined portion 71b and attached to the brake release lever 72 via the insertion hole 76a of the first shielding member 76 and the through-hole 19 of the handle portion 18. In the bogie 10 of this third embodiment, the brake release rods 70, 70 Widening section Because 71a is formed, Widening section A long article (not shown) that is longer than the longitudinal direction of the carriage body 12 can be easily loaded between the carriages 71a, 71a.

[0035] Meanwhile, while the bogie 10 of the second embodiment has a structure in which the second shielding member 78 has a biasing member 78b disposed between two positioning spacers 78c, 78d, the bogie 10 of the third embodiment does not have the biasing member 78b or the two positioning spacers 78c, 78d. In this case, the second shielding member 78 is structured so that the extension portion 71c is positioned by the bent portions 71d and 71e formed by the inclined portion 71b and the extension portion 71c. In the trolleys 10 of the first and second embodiments, two first shielding members 76, 76 are fitted at a predetermined distance in the axial direction of the gripping portion 18c of the handle portion 18, but in the trolley 10 of this third embodiment, one first shielding member 77 is provided as another first shielding member having a length, for example, twice the length of the first shielding member 76, extending from one end side to the other end side in the axial direction of the gripping portion 18c of the handle portion 18.

[0036] (Fourth Example) Fig. 15 is a front view showing a cart according to a fourth embodiment of the present invention, Fig. 16 is a right side view of Fig. 15, and Fig. 17 is a plan view of Fig. 15. Fig. 18 is an enlarged view of a main portion showing finger trapping prevention means applied to the fourth embodiment. In this fourth embodiment, components with the same reference numerals as those in the first, second, and / or third embodiments have substantially the same structure and exhibit the same functions and effects as those shown in those embodiments, and therefore detailed explanations of the structure, functions, and effects will be omitted. The trolley 10 of this fourth embodiment does not employ a structure that directly links the brake release lever 72 to the brake release rod 70, which is inserted into the through hole 19 of the grip portion 18c of the handle portion 18 and made movable, as in the shielding structure 74 of the finger pinch prevention means applied to the trolleys 10 shown in the first, second and third embodiments described above. The finger pinch prevention means of the bogie 10 of this fourth embodiment includes, for example, two relay members 80 that indirectly link the brake release lever 72 and the brake release rod 70. One end of each of the two relay members 80 is connected to the brake release lever 72, and the other end is connected to the brake release rod 70. That is, as shown in particular in FIGS. 16 and 18 , each of the two relay members 80 includes, for example, an inverted-U-shaped relay plate 82a and connecting plates 82b extending outward at right angles from both ends of the relay plate 82a. A rectangular support plate 82c, for example, for supporting the brake release rod 70, is fixed to the underside of the connecting plate 82b. The support plate 82c is fixed to the underside of the connecting plate 82b by fastening means 82d, such as bolts and nuts. Furthermore, the brake release rod 70 is fixed to the underside of the support plate 82c by welding or by fastening means (not shown), such as bolts and nuts.

[0037] Meanwhile, the curved portion 82e of the relay plate 82a of each of the two relay members 80 is fixed to the brake release lever 72 by fastening means 83 such as bolts and nuts. A cushion cover 84 is fitted over a predetermined length to the axial middle portion of the gripping portion 18c of the handle portion 18. This cushion cover 84 not only functions to improve the grip feeling when gripping the gripping portion 18c, but also functions as a spacer that defines the distance between the two relay members 80, 80 in the axial direction of the gripping portion 18c of the handle portion 18.

[0038] In the finger pinch prevention means of the trolley 10 of the fourth embodiment, the brake release lever 72 and the brake release rod 70 are linked via an intermediary member 80, and the brake release rod 72 is moved in conjunction with the gripping action of gripping the brake release lever 72 together with the grip portion 18c of the handle portion 18. Unlike the shielding structure 74 shown in the first, second, and third embodiments, which directly links the brake release lever 72 and the brake release rod 70, which is moved by being inserted through the through-hole 19 of the handle portion 18, this finger pinch prevention means indirectly links the brake release lever 72 and the brake release rod 70 via the intermediary member 80. In this case, the brake release lever 72 and the handle portion 18 are disposed apart from the brake release rod 70, which is passed through the relay member 80. Furthermore, since the handle portion 18 does not have the through hole 19 through which the brake release rod 70 is inserted, there is no gap G between the through hole 19 and the brake release rod 70. Therefore, in the trolley 10 of this fourth embodiment, even when gripping the brake release lever 72 together with the handle portion 18, compared to the trolleys 10 of the first, second and third embodiments, it is possible to avoid pinching fingers between the through hole 19 of the handle portion 18 and the brake release rod 70 which moves within the through hole 19 in the gap G between the handle portion 18 and the brake release rod 70.

[0039] The finger pinch prevention means of the cart 10 of the present invention is not limited to carts equipped with a handle portion that does not have the folding function described above, but can also be appropriately applied to carts whose handle portion is foldable. (Fifth Example) Fig. 23 is a front view showing a dolly of a fifth embodiment of the present invention, and in particular a front view showing an example of a folding mechanism for a handle portion that can be applied to a dolly of the present invention, with (A) of Fig. 23 being a front view showing the folding operation of the handle portion, (B) of Fig. 23 being a front view showing the state before the handle portion is folded, and (C) of Fig. 23 being a front view showing the state after the handle portion is folded. In this fifth embodiment, members having the same reference numerals as those in the first, second, third and / or fourth embodiments already described have substantially the same structure and exhibit the same functions and effects as the members shown in those embodiments, and therefore detailed explanations of the structure and functions and effects will be omitted. The handle portion 18 of the cart 10 shown in FIG. 23 has the same folding mechanism for the left and right support portions 18a, so only one support portion 18a will be described and the description of the other support portion 18a will be omitted. The folding mechanism 90 for the handle portion 18 of the dolly 10 includes two roughly U-shaped brackets 92, 92 arranged on both sides of the rear end of the dolly body 12 in the width direction. The brackets 92, 92 are formed into a roughly U-shape, for example, by bending a metal plate. Each of the two brackets 92, 92 includes a pair of left and right support walls 92a, 92a facing each other at an appropriate distance, and a connecting bottom wall 92b connecting one end of the support walls 92a, 92a. A support shaft 94 is attached to the end of each support wall 92a, 92a opposite the connecting bottom wall 92b. A support column base end 18aa of the handle portion 18 is rotatably supported between the support walls 92a, 92a via the support shaft 94. The support column 18a of the handle 18 has a through-hole (not shown) at its support column base end 18aa that intersects with the axial direction of the support column 18a, and a support shaft 94 is inserted through the through-hole.

[0040] In addition, between the support walls 92a, 92a, there are arranged a fixed restricting body 96a having an approximately U-shaped cross section that restricts rotation to one side in the rotation direction of the support base end 18aa of the handle portion 18, and a movable restricting body 96b that is biased by a linear torsion spring 98 and restricts rotation to the other side in the rotation direction of the support base end 18aa of the handle portion 18. Furthermore, a folding operation rod 100 is disposed between two brackets 92, 92 arranged on both sides of the rear end of the carriage body 12 in the width direction, and causes the movable restricting body 96b to rotate against the biasing force of a torsion spring 98. A safety cover 102 is disposed to cover the rotation area of ​​the support column base end 18aa of the handle portion 18 and prevent fingers from getting caught in the rotation area. The safety cover 102 is disposed so as to cover the rotation area of ​​the support column base end 18aa and prevent fingers from getting caught in the rotation area of ​​the support column base end 18aa. The safety cover 102 has an attachment piece 102a, and the support column base end 18aa of the handle portion 18 is rotatably supported by the attachment piece 102a via the support shaft 94.

[0041] In this case, a pivot 97 that rotatably supports the movable restrictor 96b and a fixed restrictor 96a are disposed at a predetermined interval between the support shaft 94 and the connecting bottom wall 92b, and each of the pair of left and right support walls 92a of the two brackets 92 has an elongated guide hole 104 that guides the folding operation rod 100 between the pivot 97 and the fixed restrictor 96a. Each bracket 92 has an attachment hole (not shown) in the connecting bottom wall 92b, and is fixed to the bogie body 12 by attaching attachment pins 106 to the attachment hole. Meanwhile, the safety cover 102 has another attachment piece (not shown), and the pivot 97 is inserted into the attachment piece to attach the safety cover 102 to the bracket 92. In addition, both axial ends of the folding operation rod 100 are inserted and supported through guide holes 102, 102 in movable restricting bodies 96b, 96b supported by a pair of left and right brackets 92, 92, and the folding operation rod 100 is operated against the biasing force of the torsion spring 98 by stepping on it with, for example, one foot. In this trolley 10, the handle part 18 can be folded by the folding mechanism 90, so that after using the trolley 10, the handle part 18 of the trolley 10 can be folded compactly and the trolley 10 can be stored in a desired location as needed, further increasing convenience.

[0042] Next, the brake mechanism 17 of this bogie 10 will be described below with reference to, for example, Figures 27, 28, 29 and 23. The brake mechanism of this bogie 10 is different from the brake mechanism 17 of the bogie 10 of the second embodiment, particularly in the configuration of the link device. That is, as seen in Fig. 27, the brake mechanism 110 of the bogie 10 includes a link arm 112, for example, in a V-shape, which is fixed to the lower end of the rod main body 70a of the brake release rod 70, and a retaining shaft 114 that holds the link arm 112 on the rear end side of the bogie main body 12. As shown in Fig. 29, the retaining shaft 114 is fixed to a fixing bracket 115 that is J-shaped in plan view by a fixing means such as welding. 27 and 28, the holder shaft 114 is fixed to the link arm 112 by a fixing means such as welding. The link arm 112 is formed of a first link arm 116 having a vertical surface 116a perpendicular to the axial direction of the holder shaft 114, and a second link arm 118 having a parallel surface 118a parallel to the axial direction of the holder shaft 114. In this case, the lower end of the rod body 70a of the brake release rod 70 is fixed to the tip of the first link arm 116 by fixing means 69. Also, a mounting bracket 119 is fixed to the tip of the second link arm 118 by fixing means such as welding. The operating rod 60 is fixed to this mounting bracket 119 by fixing means 61. The drum brake assembly 30, including the brake drum 32, brake shoes 34, 34, cam 36, pin 38, brake linings 40, 40, tension springs 42, 42 and cam lever 46, the biasing member 52 of the link device 50, the tension bolt 54 and the operating rod 60 have the same structure, action and effect as those of the above-described embodiments, and therefore detailed explanation of these components will be omitted. In the brake mechanism 17 of the bogie 10 of the fifth embodiment, similarly to the second embodiment, the rod body 70a of the brake release rod 70 is directly linked to the link arm 112. Therefore, the rotational force of the first link arm 116 and the second link arm 118 caused by the pressing force when the brake release lever 72 and the grip portion 18c of the handle portion 18 are gripped and the brake release lever 72 is pressed downward can be directly linked to the operating rod 60, so that the braking force on the fixed wheel 16 can be implemented and applied without loss.

[0043] (Sixth Example) 30 is a side view showing a truck according to a sixth embodiment of the present invention, FIG. 31 is a plan view of FIG. 30, and FIG. 32 is an end view of AA of FIG. The bogie 10 of this embodiment is, for example, the bogie 10 of the second embodiment, with a storage section 120 disposed on the rear side of the back panel 26. As shown in Figures 30 and 32, the storage section 120 is formed by the back panel 26 and a box-shaped pocket frame 122, for example, with a U-shaped cross section and an open section 122a at the top. The pocket frame 122 is formed, for example, from wire mesh. The pocket frame 122 has, at both ends in the longitudinal direction, rectangular mounting pieces 124, 124 connected thereto. The pocket frame 122 is attached to the back panel 26 by mounting means 126, such as set screws, via the mounting pieces 124, 124. In this dolly 10, delivery slips, delivery notes, invoices, catalogs, instruction manuals, and various other documents for the loaded items such as merchandise and products can be stored in the storage section 120 and transported together with the dolly 10. Note that this storage section 120 is not limited to the dolly 10 of the second embodiment, but can also be appropriately adopted in the dollies 10 of the first, third, fourth, and fifth embodiments.

[0044] (Seventh Example) Figure 33 is a front view showing a bogie according to a seventh embodiment of the present invention. The bogie 10 of this embodiment is similar to the bogie 10 of the second embodiment in that it has a so-called fork pocket 130 disposed on the underside thereof. The fork pocket 130 is formed in a tray shape with a U-shaped cross section, for example, and is disposed in approximately the center of the underside of the bogie body 12. Note that the fork pocket 130 is not limited to the bogie 10 of the second embodiment, but can also be appropriately adopted in the bogies 10 of the first, third, fourth, fifth, and sixth embodiments. In this dolly 10, the forks of a counter type forklift or a reach type forklift, for example, can be inserted into the recesses 132 of the fork pockets 130, and the dolly 10 itself can be transported to a desired location. In this case, if the dolly 10 is equipped with the folding mechanism 17 described above, the dolly 10 can be transported in a folded state.

[0045] (Eighth Example) FIG. 34 is a front view of a bogie according to an eighth embodiment of the present invention. The bogie 10 of this embodiment has a two-tiered upper surface, similar to the bogie 10 of the second embodiment. Specifically, in this bogie 10, cylindrical standing bars 142 are provided at the corners of one end and the other end of the front width of the upper surface of the bogie body 12. A mounting base 140, rectangular in plan view, is provided on the standing bars 142. The mounting base 140 has the same structure as the bogie body 12. One longitudinal end of the mounting base 140 is fixed to the axial upper end of the standing bars 142, and the other longitudinal end of the mounting base 140 is fixed to the support column 18a of the handle 18 by a fixing means such as welding. Furthermore, the bogie 10 having this two-tiered floor structure is not limited to the bogie 10 of the second embodiment, but can also be appropriately adopted in the bogies 10 of the first, third, fourth, fifth, sixth and seventh embodiments. In this cart 10, the cart body 12 and the platform 140 are configured as a two-tiered floor by the raising bar 142, so that it is possible to place and load articles such as merchandise and products on both the cart body 12 and the platform 140. Therefore, this cart 10 can transport more articles than the previously described cart 10.

[0046] At least the grip portion 18c of the handle portion 18 of each of the carriages 10 of the first to eighth embodiments described above is preferably coated with an antibacterial paint, for example.

[0047] The brake mechanism 17 of the carriage 10 according to this embodiment has, for example, a drum brake assembly 30 with an inward-expanding drum brake system, so it can be made relatively small despite its large braking force. In addition, the friction surface is on the inside and protected, so it can prevent partial wear of the wheels and the risk of so-called uneven braking (hardness) compared to a transport carriage with a conventional brake mechanism 17. Moreover, the repulsive force from the wheels is not concentrated in a spot, so the load on the link device is relatively small, which prevents damage to the link device and results in excellent durability.

[0048] Furthermore, the cart 10 according to this embodiment can be easily braked by simply releasing the brake release lever 72 and the grip portion 18c of the handle portion 18. This prevents the risk of the cart moving unattended from its stopped position due to forgetting to apply the brake, causing cargo carried on the cart body to collapse, or the cart colliding with people or objects while moving unattended, as occurs with conventional carts.

[0049] In the trolley 10 of the first to third embodiments described above, for example, the handle portion 18 and / or the brake release rod 70 include a finger pinch prevention means for preventing part of a finger from getting pinched in the gap G1 between the through hole 19 of the handle portion 18 and the brake release rod 70, and the finger pinch prevention means is characterized by including a shielding structure 74 that surrounds the peripheral portion of the gap G1 between the through hole 19 and the brake release rod 70 and shields the gap G1, thereby achieving the effect of preventing injury from pinching fingers when operating the handle portion 18 and unlocking the brake at the same time.

[0050] Furthermore, in the dolly 10 of the first and second embodiments described above, for example, the shielding structure 74 includes both the first shielding member 76 and the second shielding member 78a, so that the first shielding member 76 always surrounds the periphery of the gap G1 between the through-hole 19 of the handle portion 18 and the vertical portion 70c of the brake release rod 70, thereby providing shielding to close the gap G1, and the second shielding member 78a always surrounds the periphery of the gap G2 between the insertion hole 76a of the first shielding member 76 and the vertical portion 70c of the brake release rod 70, thereby providing shielding to close the gap G2. This makes it possible to more stably and securely prevent injuries to fingers caused by parts of the fingers getting caught in the gaps G1 and G2.

[0051] Furthermore, the bogie 10 of the fourth embodiment described above does not employ a structure that directly links the brake release lever 72 and the brake release rod 70 that is movable by being inserted through the through-hole 19 of the handle portion 18, but rather indirectly links the brake release lever 72 and the brake release rod 70 via the relay member 80, making it possible to position the brake release lever 72 and the handle portion 18 in a state where they are spaced apart from the brake release rod 70 that is passed through the relay member 80. In other words, the bogie 10 of the fourth embodiment does not have the through-hole 19 itself, through which the brake release rod 70 is inserted, in the handle portion 18, and therefore there is no gap G1 itself between the through-hole 19 and the brake release rod 70. Therefore, even when gripping the brake release lever 72 together with the handle portion 18, the gap G1 between the through hole 19 of the handle portion 18 and the brake release rod 70 prevents fingers from being pinched by the brake release rod 70, which moves through the through hole 19, thereby preventing injury from pinching fingers when operating the handle portion 18 and unlocking the brake at the same time. [Explanation of symbols]

[0052] 10 carts 12 Bogie body 13 Axle unit 14 Swivel wheel 16 fixed wheels 17 Brake mechanism 18 Handle 18a Post section 18aa strut base end 18b Tilt part 18c grip part 19 Through hole in handle 20 Bracket 22 Chainlink Fence 24 Holding bracket 26 Back plate part 30 Drum brake assembly 32 Brake drum 34,34 Brake shoes 34a, 34a One end of the brake shoe 34b, 34b Other end of brake shoe 36 Cam 38-pin 40,40 Brake lining 42,42 Tension spring 44 Cam fixed shaft 46 Cam lever 46a First connecting hole 46b Second connecting hole 46c Third connecting hole 48 Fixed Wheel Axle 49,49 bracket 50 Link device 52 biasing member 54 Tension bolt 54a Flat area 54b, 54c Threaded section 56 Bracket 56a Short side 58 Fixing means 60 Actuating rod 61 Fixing means 61´ Fixing means 62 First link arm 64 Link shaft 66 Bracket part 66a Base plate 66b Bracket plate 67 Fixing means 68 Second link arm 69 Fixing means 69´ Fixing means 70 Brake release rod 70a rod body 70b Tilt part 70c vertical section 71a Widening section 71b Inclined diameter section 71c extension part 71d,71e Bend part 72 Brake release lever 74 shielding structure 76 Shielding member (first shielding member) 76a Insertion hole 76b Opening of first shielding member 76c Corrugated portion of first shielding member 77 Another first shielding member 78 Other shielding structures 78a Another shielding member (second shielding member) 78b biasing member 78c positioning spacer 78d Other positioning spacers 78e Hexagon socket set screw 80 Relay member 82a Relay plate 82b Connecting plate 82c support plate 82d Fixing means 82e Curved section 84 cushion cover 90 folding mechanism 92 Bracket 92a Supporting wall 92b Connecting bottom wall 94 Support shaft 96a Fixed Regulator 96b Movable regulator 97 Axis 98 Linear Torsion Spring 100 Folding operation rod 102 Safety Cover 102a Safety cover mounting piece 104 Guide hole 106 Mounting pin 110 Brake mechanism 112 Link arm 114 Holding axis 115 Fixing bracket 116 First link arm 116a Vertical plane 118 Second link arm 118a parallel plane 120 Storage area 122 Pocket Frame 122a Pocket frame opening 124,124 Mounting piece 126 Mounting means 130 Fork Pocket 132 recess 140 Mounting table 142,142 Standing Bar G1: Gap between the through hole in the handle and the vertical part of the brake release rod G2: Gap between the insertion hole of the first shielding member and the vertical part of the brake release rod

Claims

1. A cart body capable of carrying luggage; Wheels that allow the carriage body to move; a handle portion that allows the carriage body to be manually driven and steered; a brake mechanism for braking the wheels; a brake release lever that can be pressed by gripping the handle portion together with the brake release lever to release the brakes on the wheel; and a brake release rod linked to the brake release lever for moving the brake mechanism; The handle portion is formed in an inverted U shape having a horizontal portion and a vertical portion, and includes a through hole that penetrates in a direction perpendicular to the horizontal portion, the brake mechanism includes a brake release rod that is inserted into the through-hole of the handle portion and is arranged to be movable up and down; the handle portion and / or the brake release rod includes a finger pinch prevention means for preventing a part of a finger from being pinched in a gap between the through hole and the brake release rod when gripping the brake release lever together with the handle portion, the finger pinching prevention means includes a shielding structure that surrounds a peripheral portion of a gap between the through hole and the brake release rod and shields the gap, The shielding structure includes: a first shielding member having an insertion hole that can communicate with the through hole, the first shielding member being inserted in the axial direction of the handle portion, surrounding a peripheral portion of the gap, and shielding the gap; a second shielding member that is inserted in the axial direction of the brake release rod, surrounds a peripheral portion of the gap, and is biased by a biasing member so as to shield the gap; a positioning spacer that is inserted in the axial direction of the brake release rod and disposed above the biasing member so as to position the upper end of the second shielding member at a position where it can surround and shield the gap; a positioning spacer that is inserted in the axial direction of the brake release rod and cooperates with the positioning spacer to position the biasing member at a predetermined position in the axial direction of the brake release rod;

2. The bogie according to claim 1, wherein the first shielding member is formed in a cylindrical shape with a substantially semicircular cross section.

3. 2. The bogie according to claim 1, wherein the first shielding member is formed in a cylindrical shape with a C-shaped cross section, the first shielding member having an opening at a portion of its circumference and extending from one end to the other end in its axial direction.

4. 2. The bogie according to claim 1, wherein the first shielding member has a continuous corrugated portion on its outer circumferential surface.

5. A bogie as described in any one of claims 1 to 4, characterized in that the brake release rod has an axially intermediate portion of the rod body having an expanded portion that expands outward in the left-right direction when viewed from the right side, and the expanded portion is located behind the support portion of the handle portion when viewed from the front and inward of the support portion when viewed from the right side.

Images