JP6384312B2 - Transportation cart and caster mounting structure - Google Patents

Description

  The present invention relates to a carriage with a caster that carries a load on a pedestal and carries the caster. A caster mounting portion and a stopper mounting portion are provided at the bottom of the pedestal, and the caster inserted and supported on the caster mounting portion is mounted with a stopper. It is related with the thing of the structure fixed to a base with the stopper with which the part was mounted | worn.

  As shown in FIG. 12, for example, as shown in FIG. 12, the caster of the carriage is opened by opening the inside facing the corner portion of the caster 102. The protrusions 101a and 101a on which the seat plate 102a is placed, the concave space 101b to which the stopper 103 is attached, and the leaf spring part 101c that engages with the attached stopper 103 are formed on the protrusions 101a and 101a. With the seat plate 102a of the caster 102 placed and supported, the stopper 103 is inserted into the concave space 101b, and the leaf spring portion 101c is engaged with the edge of the seat plate 102a and the stopper 103, so that the caster 102 There is known a transporting carriage 100 having a structure for fixing the base to the bottom of the base 101 (see, for example, Patent Document 1).

JP 2009-1047 A

  Although the illustrated conventional transport cart 100 can fix the caster 102 without using a fixing member made of steel such as a fastening screw or a screw, the protrusion of the caster 102 between the metal base 102a and the base 101 is not limited. The contact area between the pieces 101a, 101a and the stopper 103 is relatively large, and heat is easily transferred from the caster 102 to the base 101 due to the structure.

This transporting carriage 100 is suitable for transporting loads and articles whose heat transfer from the casters 102 to the pedestal 101 is not a problem. However, when transporting loads and articles that need to be kept warm or cold, the transport cart 100 can be transported from the casters 102 to the base. There is a problem in that the load or article placed on the pedestal 101 receives the influence of the heat transmitted to the 101 and deteriorates its quality.
Further, in the configuration of the transport container 100, since the insertion space for the caster 102 and the stopper 103 is provided immediately below the pedestal 101, the heat insulating property of the pedestal 101 can be obtained by inserting a heat insulating material into the pedestal 101. There is also a problem that cannot be improved.

  In view of such problems of the prior art, the present invention reduces the heat conduction from the caster to the pedestal as much as possible and fixes the caster to the bottom of the pedestal when fixing the caster to the pedestal of the transportation carriage. It is an object of the present invention to be able to fix firmly without any problems.

In order to solve the above-mentioned problems, the present invention provides a caster mounting portion on which a caster seat plate is inserted and a stopper mounting portion on which a stopper is mounted on the bottom of the pedestal. In the transporting carriage having a configuration in which the caster inserted into the part is fixed to the pedestal bottom with the stopper attached to the stopper attaching part,
The caster mounting part is
A pair of caster guide portions that project downward from the base of the pedestal and are folded into a bowl shape with the tips facing each other, and the end portions of the seat plate of the casters are engaged;
A plurality of ribs that protrude downward from the base plate and are arranged in parallel between the two caster guide portions, and support the upper surface of the caster seat plate;
A locking protrusion provided on the end side of both caster guide portions, for locking the side end of one side of the seat plate of the caster,
The stopper mounting part
A pair of stopper guide portions that are provided on the outside of the pedestal bottom portion adjacent to the caster mounting portion, project downward from the pedestal bottom portion, and whose tips are folded in a bowl shape facing each other;
Provided with an engaged portion that engages with the engaging portion of the stopper, provided at the tip of the stopper guide portion that is folded into a bowl shape,
The stopper is
A locking portion that is provided at one side end of the caster and that locks the other side end of the seat plate of the caster inserted into the caster mounting portion,
Protruding portions are provided projecting downward at the lower portion thereof and engaged with engaged portions of the stopper mounting portion when the stopper inserted between the stopper guide portions is displaced downward. It has the structure formed by the above.

The caster mounting structure by the transportation carriage having the above-described configuration is such that the caster is inserted into the caster mounting part from the outside of the side of the base and the end of the seat plate of the caster is engaged with both caster guide parts. A stopper provided with an engaging protrusion at the bottom is inserted between the stopper guide portions of the stopper mounting portion, and the stopper is displaced downward so that the engaging protrusion is provided on both stopper guide portions. By attaching the stopper to the stopper mounting portion, the peripheral end of the caster seat plate is locked to the caster guide portions and the locking projections of the caster mounting portion and the side end of the stopper. Can be fixed to the pedestal.

According to this, in the caster, of the peripheral ends of the seat plate, one opposing side end is engaged with the caster guide part, and the other opposing side end is the locking projection of the caster mounting part. And is fixed to the bottom of the pedestal, respectively, and the upper surface of the seat plate is supported by the plurality of ribs provided on the caster mounting portion to support the caster. Since the contact area between the plate and the pedestal surface including the stopper is extremely small, heat conduction from the caster to the pedestal can be reduced. In addition, since the caster is fixed with the peripheral edge of the seat plate locked to the caster guide that surrounds the caster, even if the carriage is arbitrarily slid, it does not rattle. It can be securely and securely attached to the bottom.
To install the stopper, slide the stopper into the stopper guide part of the stopper mounting part from the side of the pedestal and displace it by pushing or pulling the stopper downward, etc. It can be performed by a simple operation of engaging with an engaged portion provided in the stopper guide portion.

In the transport carriage having the above-described configuration, it is preferable that a grip portion for gripping the stopper by hand is provided at a lower portion of the stopper so that the stopper can be easily attached and attached.
In addition, the transportation cart having the above-described configuration can be configured by inserting a heat insulating material into the inside of the pedestal so as to be suitable for transporting luggage and articles that need to be kept warm or cold.
The present invention can be applied to various transportation carts such as a hand cart, a cage cart, and a flat cart, in which casters are attached to the bottom of the base.

1 is an external view of a transportation carriage according to an embodiment of the present invention. It is an external view by the side of the bottom part of the trolley | bogie of FIG. It is a schematic external view of the caster attached to the bottom part of a trolley | bogie. It is the figure which expanded and showed the corner part to which the caster of the pedestal bottom part of the trolley | bogie of FIG. 1 is attached. It is the external view (A) of the lower part side of the stopper which fixes a caster, and the external view (B) of a back side. It is an external view of the state which inserted the caster's seat board in the caster guide part of the caster attachment part provided in the base part shown by FIG. It is an external view of the state which inserted the stopper into the stopper guide part of the stopper mounting part from the state of FIG. FIG. 8 is an external view of a state in which the stopper is displaced and fixed from the state of FIG. 7. (A) is a principal part fracture | rupture external view which shows the engagement state of the stopper in the state shown in FIG. 7, (B) is a principal part fracture | rupture external view which shows the engagement state of the stopper in the state shown in FIG. (A), (B) is the figure which showed the process in which the engaging protrusion of a stopper engages with the to-be-engaged part of a stopper mounting part. It is the figure which showed the principal part cross section of the engaging protrusion of the stopper of the state which fixed the stopper to the stopper mounting part, and the to-be-engaged part of a stopper mounting part . A) is a cross-sectional view of a main part in a state where a pedestal and a caster are separated from each other, and (B) is a cross-sectional view of a main part in a state where the caster is fixed to the pedestal.

Preferred embodiments of the present invention will be described with reference to the drawings.
1 and 2 show the appearances of the upper side and the bottom side of the transportation carriage according to one embodiment of the present invention, respectively.

As shown in the figure, the transport cart 1 has casters 3, 3, 3, and 3 attached to the bottom four corners of a pedestal 2 having a plan view, respectively. 3 can be slid and moved. Of the four casters 3, 3, 3, 3, the casters 3, 3 attached in the vicinity of the left and right sides of one short side of the opposite short side of the pedestal 2 are located inside the housing 31. A brake mechanism (not shown) is provided, and the displacement operation of the foot pedal 4 attached to the edge of the short side of the base 2 is transmitted to the brake mechanism via the link mechanism 5 and the rod 6. In this way, the movement of the carriage 1 can be controlled by operating the braking mechanism and applying the brake to the caster 3 or releasing the brake.
Further, in the transport carriage 1 of this embodiment, the pedestal 2 has a synthetic resin upper frame member 21 on the upper surface side and a synthetic resin lower frame member 22 on the bottom surface which are integrally laminated, and is also insulated or cooled. Is formed by inserting a synthetic resin heat insulating material 23 into the entire interior of the pedestal 2 between the frame members (see FIG. 9).

  As shown in FIG. 3, each caster 3 attached to the bottom of the pedestal 2 is a standard medium load caster in which a rubber wheel 32 is held by a housing 31 that is a support fitting, and is provided at the upper end of the housing 31. The base plate 33 is inserted into and supported by the caster mounting portion 7 provided at the bottom of the base 2, and the stopper 9 is mounted on the stopper mounting portion 8 provided adjacent to the caster mounting portion 7. It is comprised so that it may be fixed to 2.

  Specifically, as shown in FIG. 4, the caster mounting portion 7 and the stopper mounting portion 8 are mounted at the four corners of the bottom of the base 2, the caster mounting portion 7 is inward of the bottom, and the stopper mounting portion 8 is caster mounted. The caster 3 and the stopper 9 can be sequentially inserted and attached to the caster mounting portion 7 and the stopper mounting portion 8 from the outer side of the pedestal 2 so as to be connected to the outer side of the bottom adjacent to the portion 7. It is formed as follows.

As shown in the figure, the caster mounting portion 7 includes a pair of caster guide portions 71, 71 that protrude downward from the bottom of the base 2 and are bent horizontally in a bowl shape with the tips facing each other, and a bottom plate of the base 2. A plurality of ribs 72 projecting downward and juxtaposed between the two caster guide portions 71, 71, and a locking projection 73 provided at the inner end of the base of the two caster guide portions 71, 71. And is formed.
When the caster 3 is slid and inserted into the caster guide portions 71, 71 from the outside of the side of the pedestal 2, the caster mounting portion 7 is supported with the upper surface of the seat plate 33 placed on the upper end of the rib 72. Thus, the front and rear end portions of the seat plate 33 engage with the upper surfaces of the end portions of the caster guide portions 71 and 71 that are folded in a bowl shape, and the side end portion of the seat plate 33 on the inner side of the base of the base plate is engaged with the locking projection. The caster 3 is provided so as to be held at the engaging position between the caster guide portions 71 and 71 and the seat plate 33 by being locked to the portion 73.

Further, as described above, the stopper mounting portion 8 is provided integrally with the outer side of the caster mounting portion 7, and protrudes downward from the bottom of the pedestal 2, and has a pair of tips that are folded horizontally in a bowl shape with the tips facing each other. The stopper guide portions 81 and 81, and the engaged portions 82 and 82 provided at the front end portions of the stopper guide portions 81 and 81 which are bent in a bowl shape. The engaged portions 82 and 82 are the same as the hole portions 82a to be engaged by inserting lock pins 94a constituting the engaging protrusions 94 of the stopper 9 to be described later at the tip portions of the stopper guide portions 81 and 81, respectively. A long hole portion 82b into which the positioning projection 94b is inserted and engaged is formed.
When the stopper 9 is slid and inserted into the stopper guide portions 81, 81 from the outside of the side of the pedestal 2, the positions of both ends of the stopper 9 are regulated by both guide portions, When the stopper 9 is displaced downward as it is fitted into the space where the portions 82, 82 face, the lock pin 94a of the stopper 9 and the positioning protrusion are inserted into the hole 82a and the long hole 82b of both engaged portions 82. 94b is engaged so that the stopper 9 is fixed to the bottom of the base 2.

The stopper 9 is a block body made of synthetic resin, and as shown in FIG. 5, when the stopper 9 is attached to the stopper mounting portion 8 on one side, an opening opened on the side of the base 2 of the stopper mounting portion 8 A frame portion 91 that closes the surface, and a locking portion 92 that contacts the outer end of the seat plate 33 of the caster 3 held by the caster mounting portion 7 on the other side to lock the seat plate 33. A grip portion 93 for gripping and operating the stopper 9 by hand is provided at the lower center between 91 and the locking portion 92, and engages with the engaged portion 82 of the stopper mounting portion 8 on both sides of the grip portion 93. The engaging projections 94, 94 projecting downward are arranged and formed.
The engaging protrusion 94 is inserted into and engaged with the hole 82a of the engaged portion 82 of the stopper mounting portion 8, and a lock pin 94a having a tapered tip and a tapered flange shape. The locking pin 94a is inserted into and engaged with the long hole portion 82b and is bent and protruded in a U-shape in plan view. As shown in FIG. The lock pin 94a is elastically displaced within a range in which the arm portion 94c is bent in the vertical and horizontal directions, so that the hole portion of the engaged portion 82 is projected. It is formed so that the engaging operation to 82a can be performed smoothly. Further, a projecting portion 94d is provided on the lower surface of the arm portion 94c so as to be juxtaposed with the lock pin 94a and project downward.

  In the transport cart 1 of this embodiment configured as described above, the caster 3 can be attached to the base 2 by the following operation.

First, as shown in FIG. 6, the caster 3 is attached to the caster attaching portion 7 with the base 2 facing upward.
The caster 3 is attached by sliding the caster 3 from the outside of the side of the pedestal 2 into the caster guide portions 71 and 71 of the caster mounting portion 7 so that the upper surface of the seat plate 33 is the upper end of the rib 72. It can be performed by placing it on and supporting it. In a state where the caster 3 is inserted between the two caster guide portions 71, 71, the front and rear end portions of the seat plate 33 are engaged with the upper surfaces of the end portions of the caster guide portions 71, 71 that are folded in a bowl shape. The side end portion on the inner side of the pedestal bottom is locked to the locking protrusion 73, and the caster 3 is held at the engagement position between the caster guide portions 71 and 71 and the seat plate 33.

Next, as shown in FIG. 7, the stopper 9 is inserted into the stopper mounting portion 8.
The stopper 9 is mounted by sliding the stopper 9 from both sides of the pedestal 2 into both stopper guide portions 81 and 81 of the stopper mounting portion 8 and removing the entire frame 91 of the stopper 9 from both stoppers. This can be done by fitting between the guide portions 81, 81. With the stopper 9 fitted in the stopper mounting portion 8, the frame portion 91 overlaps the side surface of the base 2 below the opening surface of the stopper mounting portion 8 as shown in FIG. The lock pin 94a and the positioning protrusion 94b of the engaging protrusion 94 of the stopper 9 are positioned below the hole 82a and the long hole 82b of the engaged part 82 of the portion 8.

  Then, by grasping the grip portion 93 of the stopper 9 and pulling the stopper 9 upward, the frame portion 91 rides on the edge of the opening surface of the stopper mounting portion 8 as shown in FIGS. 8 and 9B. And the locking pin 94a is inserted into and engaged with the hole 82a of the engaged portion 82 of the stopper mounting portion 8 and the positioning projection 94b is inserted into the long hole portion 82b. Is attached to the base 2.

When the stopper 9 is attached, as shown in FIG. 10A, the lock pin 94a of the stopper 9 is positioned below the hole 82a provided in the stopper guide portion 81, and if the stopper 9 is pulled up as it is, While the tip of the lock pin 94a enters the hole 82a, the lock pin 94a and the arm 94 are appropriately bent, and the tip of the lock pin 94a slides on the inner surface of the hole 82a as shown in FIG. Thus, the lock pin 94a can be engaged with the periphery of the hole 82a by penetrating upwardly from the hole 82a.
Further, as shown in FIG. 11, the protrusion 94d provided adjacent to the lock pin 94a in a state where the lock pin 94a is engaged with the hole 82a has a slight gap from the lower portion of the engaged portion 82. Since the lock pin 94a is displaced downward, the downward displacement of the lock pin 94a hits the edge of the hole 82a with the hook-shaped tip of the lock pin 92a, and the upward displacement is the lower part of the engaged portion 82. The stopper 9 attached to the pedestal 2 is not removed when the pedestal 2 vibrates in the vertical direction. Further, since the positioning projection 94b is engaged with the elongated hole 82b of the engaged portion 82 and the displacement of the stopper 9 in the front-rear and left-right directions is restricted, the base 2 also vibrates in the front-rear left-right direction. The stopper 9 is not detached from the base 2.

  With the stopper 9 attached to the pedestal 2, the caster 3 is engaged with the caster guide portions 71, 71 of the caster mounting portion 7 at one of the peripheral ends of the seat plate 33. The other opposing end is locked to the locking projection 73 of the caster mounting portion 7 and the locking portion 92 of the stopper 9 to be fixed to the bottom of the base 2.

  According to the transport carriage 1 of this embodiment, the caster 3 is fixed by locking the peripheral end portion of the seat plate 33 to the caster guide portions 71 and 71 surrounding the caster 3. Even if it is arbitrarily slid, it can be firmly and securely attached to the bottom of the pedestal 2 without rattling, and contact between the seat plate 33 of the caster 3 and the surface portion of the pedestal 2 including the stopper 9 Since the area is extremely small, heat conduction from the caster 3 to the pedestal 2 can be extremely reduced, and it is possible to minimize the influence of heat transfer on the luggage and articles carried on the pedestal 2.

  In addition, the form shown in figure is an example of this invention, The trolley | bogie of this invention is not limited to this, It can comprise with another appropriate form.

1 Carriage for Carrying, 2 Bases, 3 Casters, 33 Seat Plates, 4 Foot Pedals, 5 Link Mechanisms, 6 Rods, 7 Caster Mounts, 8 Stopper Mounts, 9 Stoppers

Claims (4)

At the bottom of the pedestal, a caster mounting part for inserting the seat plate of the caster and a stopper mounting part for mounting the stopper are provided in a row, and the caster inserted into the caster mounting part from the outside of the side of the pedestal is connected to the stopper mounting part. In a transporting carriage having a configuration that is fixed to the pedestal bottom with a stopper attached to
The caster mounting part is
A pair of caster guide portions that project downward from the base of the pedestal and are folded into a bowl shape with the tips facing each other, and the end portions of the seat plate of the casters are engaged;
A plurality of ribs that protrude downward from the base plate and are arranged in parallel between the two caster guide portions, and support the upper surface of the caster seat plate;
A locking protrusion provided on the end side of both caster guide portions, for locking the side end of one side of the seat plate of the caster,
The stopper mounting part
A pair of stopper guide portions that are provided on the outside of the pedestal bottom portion adjacent to the caster mounting portion, project downward from the pedestal bottom portion, and whose tips are folded in a bowl shape facing each other;
Provided with an engaged portion that engages with the engaging portion of the stopper, provided at the tip of the stopper guide portion that is folded into a bowl shape,
The stopper is
A locking portion that is provided at one side end of the caster and that locks the other side end of the seat plate of the caster inserted into the caster mounting portion,
Protruding portions are provided projecting downward at the lower portion thereof and engaged with engaged portions of the stopper mounting portion when the stopper inserted between the stopper guide portions is displaced downward. A transport cart characterized by having a configuration formed by the above.   The carriage according to claim 1, wherein a grip portion for gripping the stopper by hand is provided at a lower portion of the stopper.   The carriage according to claim 1 or 2, wherein the carriage has a configuration in which a heat insulating material is inserted inside the pedestal. In the mounting structure of the caster of the transport cart that fixes the caster of the transport cart to the base with the stopper,
At the bottom of the pedestal,
A pair of caster guide portions projecting downward from the pedestal bottom and bent into a bowl shape with the tips facing each other, a plurality of ribs projecting downward from the pedestal bottom plate and juxtaposed between the two caster guide portions, and both casters A caster mounting portion provided with a locking projection provided on the end side of the guide portion;
A pair of stopper guides that are provided on the outside of the pedestal bottom adjacent to the caster mounting part, project downward from the pedestal bottom and fold in a bowl shape with the tips facing each other, and folded into a bowl shape of both stopper guide parts A stopper mounting part having an engaged part provided at the tip part is provided continuously,
A caster is inserted into the caster mounting part from the outside of the side of the pedestal, the upper surface of the seat plate of this caster is supported by the ribs, and the end of the seat plate is engaged with both caster guide parts. A stopper provided with an engaging projection is inserted between the stopper guide portions of the stopper mounting portion, and the stopper is displaced downward to move the engaging projection to an engaged portion provided on both stopper guide portions. By engaging and attaching the stopper to the stopper mounting part,
A transporting carriage characterized in that the caster is fixed to the pedestal by locking the peripheral end of the seat plate of the caster to both caster guide portions and the locking projections of the caster mounting portion and the side ends of the stopper. Caster mounting structure.

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