JP2019031140A - Cart - Google Patents

Abstract

To provide a cart that does not turn backwards even when a depression part located on a rear side is depressed at the time of releasing turning lock of a handlebar.SOLUTION: After a cart 20 is used with a handlebar 60 locked as a standing position, when lock of the handlebar 60 by a handlebar lock unit 40 is released, the lock can be readily released by depressing a depression part 54 downwards. At this time, since the depression part 54 is located on a front side beyond rear casters 64, a possibility that the cart 20 may turn with either of the rear casters 64 as an axis when the depression part 54 is depressed can be deterred. Eventually, there is provided the cart 20 making it possible to readily release lock of the handlebar 60 and offering high maneuverability.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a carriage.

  Conventionally, in transport carts with a handle that can be raised and lowered, while maintaining the simplicity of unlocking the handle for tilting the handle, even if the handle is unlocked accidentally, the handle does not fall over safely. 2. Description of the Related Art A transport carriage having a handle raising / lowering mechanism is known. For example, in Patent Document 1, when the rivet of the handle base is held in the vertically long hole and the rivet is present at the top of the vertically long hole, the handle becomes rotatable about the rivet and can move up and down. Is located at the lower end of the vertically long hole, the vertical movement is restricted by the standing holding wall and the vertical movement is restricted by the slidable handle lock part. Describes a transport carriage that unlocks the vertical movement by the action of the handle stopper and moves the rivet to the upper end of the vertically long hole so that the handle base is rotatable.

JP 2011-37367 A

  However, in the transport cart described in Patent Document 1, the handle stopper for releasing the handle lock is located on the rear side of the caster on the rear side of the transport cart, so that the handle stopper is moved downward to release the handle lock. When it is pressed, it rotates around the caster on the rear side and the front side is lifted, so that it is difficult to release the handle lock.

  The present invention has been made in view of such problems, and a main object of the present invention is to provide a cart that can be easily released without lifting the front side when the handle lock is released.

  The present invention adopts the following means in order to achieve at least one of the above objects.

The cart of the present invention is
A main body having a flat surface capable of loading a load on the upper surface side, and having a front caster provided on the front side and a rear caster provided on the rear side;
A handle portion that can be positioned at a standing position standing on the rear side of the main body portion and a fixed position fixed along the upper surface of the main body portion;
An insertion tube into which at least a part of the handle portion is inserted when positioning the handle portion at the standing position;
A handle portion fixing portion for fixing the handle portion to the standing position;
A release portion comprising: a pressing portion that is pressed in a lower surface direction of the main body portion; and a release rod that connects the pressing portion and the handle portion fixing portion;
With
The release portion is positioned on the front side of the rotation shaft of the wheel of the rear caster, and the handle portion fixing portion is moved along with the movement of the release rod when the pressing portion is pressed toward the lower surface of the main body portion. It is characterized by releasing the fixation of
Is.

  The cart according to the present invention has an insertion hole into which at least a part of the handle portion is inserted when the handle portion is fixed at a standing position standing on the rear side, and the handle portion in a state in which the handle portion is inserted into the insertion hole. A handle fixing portion for fixing the handle portion and a release portion for releasing the fixing of the handle portion by the handle fixing portion, and the release portion is located on the front side of the rotation axis of the rear caster provided on the rear side. When the pressing portion is pressed in the lower surface direction of the main body portion to release the handle portion, the space between the front caster and the rear caster is pressed downward. By doing so, for example, when the release portion is located on the rear side of the rear caster, the carriage may rotate around the rear caster, but such a possibility can be reduced in advance. Therefore, it is possible to reduce the labor when releasing the fixation and obtain high operability.

  In the cart of the present invention, the main body portion may have a concave portion whose rear side is opened, and the pressing portion may be located in the concave portion. If it carries out like this, when loading to a flat surface, it will be easy to load compared with the case where the press part is provided in the flat surface.

  The carriage of the present invention may be characterized in that the upper side surface of the pressing portion is positioned in a lower direction than the surface of the flat surface. In this way, when loading on a flat surface, the possibility that the load and the pressing portion come into contact with each other can be reduced, so the pressing portion is pressed downward by the load, and the handle portion fixing portion is fixed. The possibility of being released can be reduced in advance.

  In the cart according to the present invention, the handle portion fixing portions are respectively provided on both end sides of the handle portion, and are urged by a urging member in a direction approaching the handle portion, and the release rod has one end side and When the other end side is connected to the handle portion fixing portion and the pressing portion is pressed in the lower surface direction, the handle portion fixing portion rotates in a direction away from the handle portion, and the fixing of the handle portion is released. It may be a feature. In this way, by pressing the pressing portion, it is possible to simultaneously release the handle portion by the handle portion fixing portions provided on both ends of the handle portion, so that the release operation can be easily performed. .

FIG. 1 is a perspective view showing an outline of the configuration of the carriage 20. FIG. 2 is a cross-sectional view of the central portion of the carriage 20 cut in the front-rear direction. FIG. 3 is an explanatory diagram for explaining the configuration of the α portion in FIG. 2. FIG. 4 is an explanatory diagram for explaining the movement of releasing the handle portion 60. FIG. 5 is an explanatory diagram for explaining the movement of fixing the handle portion 60.

  Next, the cart 20 will be described in detail as an example of the embodiment of the present invention. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. It can be changed as appropriate. In addition, the same or similar code | symbol is attached | subjected to the corresponding component in each figure. Moreover, an example of the usage method of the cart of the present invention will be clarified by showing an example of the movement of fixing and releasing the handle portion 60.

  As shown in FIG. 1, a cart 20 that is an example of an embodiment of the present invention includes a main body 30, a handle 60 that is rotatably attached to the upper surface of the main body 30, and a handle 60. An insertion cylinder 38 into which the portion is inserted, a rear caster 64 attached to the lower surface side of the main body 30, a central caster 63 (see FIG. 2), and a front caster 62 are provided. In the following description, the direction in which the handle portion 60 is attached to the main body portion 30 will be described as the rear, the direction facing the handle portion 60 as the front, and the other two directions as the right side and the left side. The designation is for explaining the relative positional relationship, and does not limit the absolute positional relationship of the carriage 20.

  As shown in FIG. 1, the main body 30 has a recess 32 that is recessed in a substantially rectangular shape with the rear side open on the rear side, a handle portion storage groove 34 that stores the handle portion 60, and a part of the handle portion. And an insertion cylinder 38 having a substantially rectangular parallelepiped shape, and a flat surface 31 is formed on the upper surface side. The recess 32 is a recess having a lateral width of 20 centimeters or more and open on the rear side, and is provided with a pressing portion 54 of a release portion 50 that releases the fixation of the handle portion 60. Thus, since the pressing part 54 is provided in the recessed part 32, when a load is loaded on the flat surface 31, the pressing part 54 may be unintentionally pressed by the load, and the handle part 60 may be unfixed. Can be reduced in advance. In addition, since the recess 32 has a width of 20 centimeters or more and is open on the rear side, when the user steps on the pressing portion 54 by stepping on the foot, the user's foot is on the side surface of the recess 32. Since the pressing part 54 can be pressed without hitting, it is easy to press compared with the case where the width is narrow.

  The handle portion storage groove 34 is a groove provided in the front-rear direction on each side of the main body portion 30, the rear side communicates with the insertion tube 38, and the front side is open. The handle portion storage groove 34 is provided with a restriction claw 35 on the side surface. When the handle portion 60 is stored in the handle portion storage groove 34, the movement of the handle portion 60 is restricted by the restriction claw 35. . By doing so, the possibility that the handle portion 60 moves unintentionally when the handle portion 60 is stored in the handle portion storing groove 34 can be reduced. Further, a regulation plate 36 that moves outward along the surface of the main body portion 30 is provided on the upper surface side of the handle portion storage groove 34 provided on the right side, and the handle portion 60 is connected to the handle portion storage groove 34. By moving the regulating plate 36 outward (rightward direction) along the surface of the main body 30 after being housed inside, the handle 60 is fixed, and the possibility that the handle 60 moves is further reduced. it can. By doing so, the handle portion 60 can be fixed in the storage position. Further, in this state, the carriage 20 can be easily carried by holding the holding holes 24 provided in the vicinity of the right side and the left side of the main body 30. By carrying out like this, it can carry easily in the state which has not loaded the trolley | bogie 20 with the load.

  The insertion cylinder 38 is provided at a position communicating with the rear side of the handle portion storing groove 34 on the rear side of the main body portion 30, and the handle portion fixing portion 40 is provided on the inner side (FIG. 2). reference). The handle portion 60 is fixed by the handle portion fixing portion 40 in a state where a part of the handle portion 60 is inserted into the insertion cylinder 38, so that the handle portion 60 is fixed at the standing position and is usable in a state where a load is loaded on the carriage. .

  As shown in FIGS. 2 and 3, the handle portion fixing portion 40 is a member including a movable portion 46 including a substantially arc-shaped arc portion 42 and a substantially linear shape linear portion 44 and a shaft portion 48, and One end side of the shaft portion 48 is rotatably attached to the main body portion 30 by a rotation shaft 49. The movable portion 46 is connected to a release rod 52 described later. When the release portion 50 described later is pressed, the movable portion 46 rotates in a direction away from the handle portion 60 as the release rod 52 moves. The handle portion fixing portion 40 is unlocked, and the handle portion 60 is movable. Here, FIG. 2 is a cross-sectional view of the center of the carriage 20 cut in the front-rear direction, and FIG. 3 is an explanatory view in which the α portion in FIG. 2 is enlarged and some members are omitted.

  As shown in FIG. 3, the release portion 50 includes a release rod 52 that connects the handle portion fixing portions 40 provided on the right side and the left side, respectively, and a press that is fixed to a substantially central portion of the release rod 52. Part 54. The release portion 50 is provided in front of the rotation shaft 66 of the rear caster 64. Thus, when the release portion 50 is provided on the rear side of the rotation shaft 66 of the rear caster 64, the rear caster 64 is rotated when the pressing portion 54 is pressed downward to operate the release portion 50. There is a possibility that the front side of the main body 30 will be lifted by rotating as the center of movement, but the release portion 50 is provided on the front side of the rotation shaft 66 of the rear caster 64, so that the rear caster 64 rotates around the rotation center. The possibility that the front side of the main body 30 is lifted can be reduced in advance.

  The handle portion 60 is a metal member having an inverted U shape, and is fixed on the surface of the main body portion 30 with a fixed position (see FIG. 2) stored in the handle portion storing groove 34 along the surface of the main body portion 30. It is positioned at a substantially vertical position, and a part of one end side is positioned at a standing position where it is inserted into the insertion tube 38. Further, a handle portion 61 made of urethane is provided on the upper portion of the handle portion 60, and when the handle portion 60 is operated, the handle portion 61 is operated in a state where it is gripped. Since urethane has elasticity and flexibility, the burden during operation can be further reduced as compared with the case where the handle portion 61 is made of metal. On the other hand, a locking member 57 comprising a flat locking surface 55 and an inclined surface 56 inclined from the one end side of the locking surface 55 toward the lower surface is provided on the side surface on the lower side of the handle portion 60. . In this way, when the carriage 20 is used, if the handle portion 60 is moved downward after rotating the handle portion 60 from the fixed position to the standing position, the handle is moved along the inclination of the inclined surface 56. After the part fixing part 40 moves, the handle part 60 can be fixed to the standing position by the locking surface 55 being locked.

  The rear caster 64, the central caster 63, and the front caster 62 are known casters having wheels that rotate about the rotation shaft 66 in the forward direction and the backward direction, and are on the lower surface side of the main body 30, and are on the front side and the rear side. It is provided on each side.

  Next, the storage method of the carriage 20 of the present embodiment configured as described above will be described in detail. When the carriage 20 is used, as shown in FIG. 1, the handle portion 60 is fixed at the standing position, and a load (not shown) is loaded on the upper surface of the main body portion 30. When the handle portion 60 is moved to the fixed position after use, the handle portion 60 is tilted in the direction of the arrow in FIG. 1 so that the handle portion 60 is moved to the fixed position and then fixed to the fixed position. By doing so, it is compact after use and easy to store. Specifically, as shown in FIG. 4, first, the pressing portion 54 is pressed. When the pressing portion 54 is pressed, the central portion of the release rod 52 is pressed and the release rod 52 moves along the elongated hole 26 in the direction of the arrow in FIG. 3 (downward right in FIG. 3). The connecting handle portion fixing portion 40 rotates around the rotation shaft 49 and moves from the locking position (see FIG. 4A) to the release position (see FIG. 4B). By doing so, the locking surface 55 of the handle portion 60 is released, and the handle portion 60 becomes movable. At this time, since the pressing portion 54 is positioned in front of the rotation shaft 66 of the rear caster 64, when the pressing portion 54 is pressed, it does not rotate around the rear caster 64. In other words, when the pressing portion 54 is positioned on the rear side of the rotation shaft 66 of the rear caster 64, the rear caster 64 may be rotated about the rotation shaft, but this possibility can be prevented in advance. it can. Moreover, since the recessed part 32 provided with the pressing part 54 has a width of 20 cm or more and the rear side is open, when pressing the pressing part 54 with the sole of the foot, It is easy to press without contacting.

  Subsequently, the handle portion 60 is moved upward in a state where the handle portion fixing portion 40 is located at the release position, and the pressing of the pressing portion 54 is released. By doing so, since the handle portion fixing portion 40 is urged rearward by the spring 28 corresponding to the urging member of the present invention, the handle portion fixing portion 40 is rotated by the urging force and is again positioned at the locking position. To do. At this time, as the handle portion fixing portion 40 rotates, the pressing portion 54 connected to the handle portion fixing portion 40 via the release rod 52 also moves upward, and returns to the state before being pressed again. At this time, since the height of the pressing portion 54 is lower than the depth of the concave portion 32, the pressing portion 54 does not contact the load even when the load is placed on the flat surface 31 of the carriage 20. In other words, when loading a load, there is no possibility of being obstructed by the pressing portion 54, so that convenience is high. Since the handle portion storage groove 34 is provided with the restriction claw 35, the handle portion 60 stored in the handle portion storage groove 34 is positioned by the restriction claw 35. By doing so, the possibility that the handle portion 60 unintentionally separates from the handle portion storing groove 34 can be reduced in advance. Subsequently, the regulating plate 36 provided on the flat surface 31 is moved outward. By doing so, the movement of the handle portion 60 is further restricted by the restricting plate 36, and the possibility that the handle portion 60 is unintentionally detached from the handle portion fixing portion 40 can be reduced in advance.

  Then, when using the trolley | bogie 20, the movement at the time of positioning the handle | steering-wheel part 60 in a standing position is demonstrated. When the carriage 20 is used, first, the restriction plate 36 (see FIG. 1) is moved in the center direction (left direction) to release the restriction of the movement of the handle part 60 and then stored in the handle part storing groove 34. The handle portion 60 is rotated backward. After the handle portion 60 is rotated to a position (see FIG. 5A) that is substantially vertical, the handle portion 60 is moved downward, and the lower portion of the handle portion 60 is stored in the insertion tube 38 (see FIG. 5B). At this time, as the handle portion 60 is stored in the insertion cylinder 38, the inclined surface 56 of the locking member 57 provided on the lower side surface of the handle portion 60 presses the arc portion 42 of the handle portion fixing portion 40. The handle portion fixing portion 40 moves from the locked position to the unlocked position. When the handle portion 60 is further moved downward and the uppermost portion of the inclined surface 56 is moved downward from the lowermost portion of the arc portion 42, the handle portion fixing portion 40 is moved rearward by the biasing force of the spring 28. It moves to the locking position where the linear portion 44 is positioned above the stop surface 55 (see FIG. 5C). By doing so, the upward movement of the handle portion 60 is restricted, and the handle portion 60 can be fixed at the standing position.

  According to the cart 20 of the embodiment described in detail above, after the handle portion 60 is fixed at the standing position and the cart 20 is used, when the handle portion 60 is released from being fixed by the handle portion fixing portion 40, the pressing portion It can be easily released by pressing 54 downward. At this time, since the pressing portion 54 is provided in front of the rear caster 64, when the pressing portion 54 is pressed, the possibility that the cart 20 rotates around the rear caster 64 can be prevented. For this reason, the handle portion 60 can be easily released and has high operability.

  Moreover, since the recessed part 32 is provided in the back of the main-body part 30, and the press part 54 is provided in the recessed part 32, when loading on the upper surface of the main-body part 30, the press part 54 becomes the upper surface of the main-body part 30. It is easier to load than the case where it is provided on the same plane.

  At this time, since the top surface of the pressing portion 54 is located between the upper surface of the main body portion 30 and the bottom surface of the concave portion 32, when the load is loaded on the upper surface of the main body portion 30, the load is the top surface of the pressing portion 54. Do not touch. By doing so, the possibility that the pressing portion 54 is unintentionally pressed by the weight of the load and the fixing of the handle portion fixing portion 40 is released can be reduced in advance.

  Further, the handle portion fixing portion 40 is provided on both ends of the handle portion 60 in a state of being biased by the spring 28 in a direction approaching the handle portion 60, and the handle portion fixing portion 40 is provided with the release rod 52. Are provided on both sides. For this reason, when the pressing portion 54 connected to the release rod 52 is pressed downward, the handle portion fixing portion 40 rotates in a direction away from the handle portion 60 and the fixing of the handle portion 60 can be released. By doing so, since the two handle portion fixing portions 40 provided on the handle portion 60 can be released simultaneously, the release operation can be easily performed, and the operability is high.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the embodiment described above, the insertion cylinder 38 is provided on the rear side of the main body 30, but the insertion cylinder 38 may be provided on the rear side of the rear caster 64. . By doing so, the position of the handle portion 60 inserted into the insertion tube 38 is located on the rear side, so that the influence of the handle portion 60 on the load loading position is reduced, and the degree of freedom of the load loading position is further increased. Can be increased.

  In the embodiment described above, the central caster 63 is provided, but the central caster 63 may not be provided. Even in this case, the same effect as the above-described embodiment can be obtained.

  As shown in the above-described embodiment, it can be used as a transportation field, particularly as a hand cart.

  DESCRIPTION OF SYMBOLS 20 ... Carriage, 24 ... Gripping hole, 26 ... Long hole, 28 ... Spring, 30 ... Main part, 31 ... Flat surface, 32 ... Recessed part, 34 ... Handle part storing groove, 35 ... Restriction nail, 36 ... Restriction plate, 38 ... Insertion tube, 40 ... Handle part fixing part, 42 ... Arc part, 44 ... Linear part, 46 ... Movable part, 48 ... Shaft part, 49 ... Rotating shaft, 50 ... Release part, 52 ... Release rod, 54 ... Press 55, a locking surface, 56, an inclined surface, 57, a locking member, 60, a handle portion, 61, a handle portion, 62, a front caster, 63, a central caster, 64, a rear caster, 66, a rotating shaft.

Claims (4)

A main body having a flat surface capable of loading a load on the upper surface side, and having a front caster provided on the front side and a rear caster provided on the rear side;
A handle portion that can be positioned at a standing position standing on the rear side of the main body portion and a fixed position fixed along the upper surface of the main body portion;
An insertion tube into which at least a part of the handle portion is inserted when positioning the handle portion at the standing position;
A handle portion fixing portion for fixing the handle portion to the standing position;
A release portion comprising: a pressing portion that is pressed in a lower surface direction of the main body portion; and a release rod that connects the pressing portion and the handle portion fixing portion;
With
The release portion is positioned on the front side of the rotation shaft of the wheel of the rear caster, and the handle portion fixing portion is moved along with the movement of the release rod when the pressing portion is pressed toward the lower surface of the main body portion. It is characterized by releasing the fixation of
Trolley. The main body has a recess that is open on the rear side,
The pressing portion is located in the concave portion,
The cart according to claim 1. The cart according to claim 2,
The upper side surface of the pressing part is located in a lower direction than the surface of the flat surface,
Trolley. It is a trolley | bogie of any one of Claim 1 to 3,
The handle portion fixing portions are respectively provided at both end sides of the handle portion, and are urged by a urging member in a direction approaching the handle portion,
The release rod has one end side and the other end side connected to the handle portion fixing portion, respectively.
When the pressing portion is pressed in the lower surface direction, the handle portion fixing portion rotates in a direction away from the handle portion, and the fixing of the handle portion is released.
Trolley.

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