JP3959458B2 - Caster mechanism for pallets, etc. - Google Patents

Description

The present invention relates to the field of caster mechanisms for pallets and the like in which a plurality of casters are mounted at predetermined locations on a lower horizontal frame constituting a pallet so that the casters are stored when not in use.

  Japanese Patent Laid-Open No. 2001-121903 (a detachable caster, a detachable supported object lifting tool, and a pallet for transport using the detachable caster) is disclosed as a conventional pallet for conveying a caster. .

  In the present invention, the casters 1 can be easily and reliably attached and detached, and the workers can perform one-on-one work to attach or detach all the casters 1. It was cumbersome, such as requiring a jig for carrying out or lifting.

  The invention of the above-mentioned patent application has a configuration in which the casters 1 cannot be stacked on the pallet unless the casters 1 are removed one by one.

  Furthermore, the invention of JP-A-2002-225866 (loading and carrying pallet) has been disclosed prior to the filing of the present application.

  The caster 13 of the present invention has a configuration in which it cannot be stored when not in use in a fixed state.

  Therefore, when the pallet of this invention is stacked, the receiving frame 12 must be attached to the upper end portion of the support column S and the caster 13 must be inserted.

Furthermore, since the caster 13 of the invention is configured to insert the caster 13 into the receiving frame 12 of the support column S when stacking pallets, a large load is applied to the caster 13 and the caster 13 may be damaged. .
JP 2001-121903 A JP 2002-225866 A

  The caster mechanism of the present invention is a rotating mechanism that is rotatably attached to a lower horizontal frame that constitutes a pallet or the like as a means for solving the defects such as the pallet caster for transportation that is the above-mentioned patent application of the conventional disclosure. If the caster is attached and the rotation mechanism is operated, the wheels of the caster come into contact with the floor or the ground, or if the rotation mechanism is operated, the caster is retracted, and the function as a caster is lost. The bottom part of each leg part attached perpendicularly to the corner part was in contact with the floor surface to support the pallet or the like.

  Therefore, the present invention does not carry out the loading work by supporting the whole with four legs as in the case of the conventional pallet, so that it is not necessary to carry it through a forklift.

  Furthermore, the present invention has an advantage that the floor surface is not damaged when the loaded pallet is moved because the bottom portion of the leg portion is not in contact with the floor surface.

  Further, according to the present invention, when pallets are stacked, they can be stacked in the same manner as a conventional pallet with the casters standing upright, and the stored casters protrude beyond the horizontal frame below the pallet. In this way, the casters were protected and damage due to jumping was prevented.

The invention according to claim 1 is a pallet for attaching a vertical leg portion that is quadrilateral and protrudes downward from the frame to a corner portion of a horizontal frame.
The left and right sides of the outer surfaces of the pair of opposing frames in some frames constituting the horizontally frame insertion hole possess the left and right of,且下side bottom parallel horizontal shaped substrate A rotating rod that is perpendicular to the opposing frame and is rotatable between a frame that fixes the substrate and a frame that fixes the substrate and a frame that faces the frame. A plurality of casters are mounted on the rotary rods, and a plurality of casters are positioned inside the horizontal frame. When the casters are not used, the casters are in a retracted state, and the bottoms of the plurality of legs contact the floor surface or the like. When the caster is in use, the caster stands up from the stowed state, the bottom of the leg rises from the floor, etc., and the wheels constituting the caster are attached so as to contact the floor, etc. The bottom of the pallet is formed in a concave shape so that the head of the leg portion of the separate pallet can be securely inserted, and the end of the rotary rod protruding from the outer surface of the frame for mounting the substrate, A spring receiving portion is attached in parallel with the substrate, and a pin projecting into and out of the insertion hole of the substrate is provided at one end portion between the spring receiving portion and the substrate, and the other end portion is connected to the rotating rod. A undulation operation part is provided, and a spring body is interposed between the spring receiving part and the undulation operation part, and an operation lever is attached to the undulation operation part, and the operation lever is attached to the spring reception part. When pressing to the side, the pins of the undulation operation part come out of the insertion hole, and when the pins are inserted into the insertion holes on the left side of the substrate, the plurality of casters are simultaneously stored and are not used, When the pin is inserted into the right side insertion hole, a plurality of Tar is a pallet caster mechanism, characterized in that a grounded use state to the standing and the floor surface or the like.

A caster mechanism for a pallet according to a first aspect of the present invention is a pallet in which a vertical leg that protrudes downward from the frame is attached to a corner of the horizontal frame and is formed into a quadrilateral shape. the left and right sides of the outer surfaces of the pair of opposing frames in a part of the frame structure, the insertion hole is perforated in the left and right, 且下side bottom by a horizontal-like substrate in parallel form,且A rotating rod that is orthogonal to the opposing frame and is rotatable is attached to the lower frame of the substrate between the frame that fixes the substrate vertically and the frame that opposes the frame. A plurality of casters are positioned on the inner side of the horizontal frame on each rotary rod, and when the casters are not in use, the casters are in a retracted state, while the bottoms of the plurality of legs are in contact with the floor surface, etc. When the caster is in use, it stands up from the stowed state, the bottom of the leg rises from the floor, etc., and the wheels constituting the caster are attached so as to contact the floor, etc., and the bottom of the leg is The head of the leg of the separate pallet is formed in a concave shape that can be securely inserted, and is parallel to the substrate at the end of the rotary rod that protrudes from the outer surface of the mounting frame. A spring receiving portion is attached in a shape, and a pin projecting into and out of the insertion hole of the substrate is provided at one end portion between the spring receiving portion and the substrate, and the other end portion is attached to the rotary rod. An undulating operation part is provided, and a spring body is interposed between the spring receiving part and the undulating operation part, and the operating lever is attached to the undulating operation part and the operating lever is pressed toward the spring receiving part side. Then, the pin of the undulation operation part comes out of the fitting insertion hole, and the pin is When the board is inserted into the insertion hole on the left side of the board, the plurality of casters are simultaneously stored and are not used, and when the pin is inserted into the insertion hole on the right side, the plurality of casters are raised. The caster mechanism for pallets is characterized by being grounded to the floor surface, etc., so that when the pallet is loaded, the bottom of the leg is lifted at the same time as the caster is lifted to eliminate contact with the floor surface. This has the advantage that a series of operations can be performed very easily.

  Furthermore, the caster mechanism of the present invention has an advantage that two casters can stand up or be stored at a time only by moving the operation lever in either the left or right direction.

  Further, since the caster mechanism of the present invention is a pallet caster mechanism in which the caster is located inside the horizontal frame, even if the pallets are stacked, the caster does not protrude from the frame, so there is no risk of damage. Have.

  An embodiment relating to the invention described in claim 1 of the present invention will be described as follows based on the drawings.

  In the drawings, a is a pallet on which a pallet caster k of the present invention is mounted. The structure of the pallet a is composed of the following components.

  This pallet a is provided with quadrilateral frames 1 and 2 facing downward. Then, four vertical leg portions 3 that slightly protrude downward from the respective corner portions are attached to the respective four corner portions of the four frames 1 and 2. Reference numeral 4 denotes a bottom portion of the leg portion 3, which is formed in a concave shape that allows the head portion 26 of the leg portion 3 of the separate pallet a to be securely inserted when the pallets a are stacked. Reference numeral 6 denotes an inner frame which is connected in parallel with the other frames 2 and 2 on the inner side between the opposing frames 1. Two are formed in the drawing, but are not limited. Reference numeral 7 denotes a cushioning material vertically attached to a predetermined portion of the inner frame 6, and a plurality of cushioning materials are provided. 8 is a detachable frame 9 slightly above the middle part of the leg part 3 and interposed between the left side leg part 3 parallel to the inner frame 6 and the right side rear leg part 3. Four pins projecting inward of the opposing leg portions 3.

  A gate cushioning material 12 is provided on the surface of the removable frame 9.

  The caster k of the present invention is attached to the pallet a assembled with the above-described components and the like as follows.

  In the one opposite horizontal frame 1 described above, a substrate 14 having a semicircular shape and having a horizontal bottom bottom is vertically attached to the outer side surface 13 of the front frame 1. The substrate 14 is provided on the left side and the right side of the frame 1. Further, two insertion holes 15 are formed in the left side and the right side of the substrate 14.

  Further, it is located below the center of the substrate 14, below the frame 1 to which the substrate 14 is attached, below the frame 1 facing the frame 1, and to the inside of the frame 1. The mounting brackets 17 that support 16 are bonded to each other.

  Two mounting brackets 17 are attached to the frame 1 immediately below the substrate 14, and two mounting brackets 17 are also installed at the same interval on the opposite frame 1. Therefore, one rotary rod 16 is inserted into two sets of mounting brackets 17 facing the opposing frame 1 and slightly protrudes outward from the substrate 14.

  Further, when the caster k and the wheel 19 of the caster k are in contact with the floor surface 20 on the mounting bracket 17 facing each other, the bottom 4 of the leg portion 3 is slightly lifted from the floor surface 20 and does not rub the floor surface 20. The caster k is attached to the metal fitting 17 so as to be in a state.

  Next, an operation mechanism for raising or storing the caster k is as follows.

  One end of a spring receiving portion 21 is attached in parallel to the substrate 14 to the end of the rotary rod 16 that slightly protrudes from the outer surface 13 of the frame 1 to which the substrate 14 is attached.

  Further, between the substrate 14 and the spring receiving portion 21, a pin 22 that protrudes and enters into an insertion hole 15 formed in the substrate 14 is projected at the upper end portion, and the lower end portion is connected to the rotary rod 16. The undulation operation unit 18 to be connected is provided. The raised operation portion 18 is provided with an insertion hole at the lower end, and is normally fitted into the rotary rod 16, and the inserted relief operation portion 18 is slightly tilted in the length direction of the rotary rod 16. Further, spacers 18 a and 18 a are inserted into the rotary rod 16 on the left side and the right side of the hoisting operation portion 18 fitted into the rotary rod 16 as described above. The relationship between the rotary rod 16 and the spacers 18a, 18a is that both the spacers 18a are provided with fitting insertion holes 18b that can be fitted into the rotary rod 16, so that the rotary rod 16 is inserted into the fitting insertion holes 18b. The spacers 18 a and 18 a are fixed to the rotary rod 16 by being inserted.

  A slight gap portion 18c is provided between the undulating operation portion 18 fitted into the rotary rod 16 and the spacers 18a, 18a. The reason is that the hoisting operation portion 18 can be slightly inclined in the direction of the spring receiving portion 21 and the base portion 14.

  Furthermore, the raising / lowering operation part 18 and the lower part of both the spacers 18a and 18a are integrally connected via connection parts 18d, such as a pin.

  Further, the spring body 23 is interposed between the spring receiving portion 21 and the undulation operating portion 18 so as not to be detached. The spring body 23 is a spring type but may be a plate spring.

  Further, the operation lever 25 in the protruding state is attached to the outer side surface 24 of the hoisting operation portion 18.

When the caster k is in the standing state, the operation lever 25 is slightly perpendicular to the frame 1 to which the substrate 14 is attached, and the pin 22 is fitted into the right insertion hole 15 while the caster k is on the other side. When retracting, the pin 22 is inserted into the insertion hole 15 on the left side, and the operation lever 25 is positioned parallel to the frame 1 to which the substrate 14 is attached or slightly downward.

  When the pin 22 is fitted in any one of the two insertion holes 15 of the substrate 14, the undulation operation portion 18 is moved in the direction of the substrate 14 by the action of the spring body 23. The pin 22 is a mechanism that does not inadvertently detach from the fitting insertion hole 15 when pressed.

  Two casters k of the present invention are usually attached to the inner side of the opposed frame 1 and to the rotary rod 16 as shown in the drawing. Further, as shown in FIGS. 1, 2, 3, and 4, the caster is attached with the wheel 19 directed to the right side, that is, in the direction of the leg 3 when retracted, while FIG. As shown in the figure, separately from the caster k, it is attached so as to be stored toward the left side, that is, in the direction of the leg 3 facing the leg 3.

  Accordingly, the operation lever 25 for attachment to the operation raising / lowering operation portion 18 which is an operation mechanism for raising or retracting the two casters k attached to the left and right rotary rods 16 is connected to the caster k. The state when standing up or retracting is symmetrical as shown in FIG. Therefore, the insertion state of the pin 22 and the insertion hole 15 when the right caster k stands up differs from the insertion state of the pin 22 and the insertion hole 15 when the left caster k stands up. Yes.

  When the caster k stands up, a stopper 27 is provided on the inner frame 6 to secure the standing state. The mounting bracket 17 on the head of the caster k standing by the stopper 27 is locked.

  When carrying out the loading operation on the pallet a on which the caster k mechanism of the present invention is mounted, the casters k are erected by operating the respective mechanisms to lift the bottom portion 4 of the leg portion 3, and from the floor surface 20. A state having a slight interval is set.

  When the loading operation on the pallet a is completed and the pallet a is moved to a predetermined place, the floor 20 can be moved without being damaged by the action of the caster k when the pallet a is pushed.

  Further, since two casters k are attached to one rotary rod 16, the pin 22 can be easily detached from the fitting hole 15 by operating the operating lever 25 and pressing the spring body 23. Therefore, the operation in either the left or right direction of the lever 25 can be performed very smoothly.

  Further, in the present invention, since the spring body 23 presses the pin 22 in the direction of the insertion hole 15, the pin 8 is not easily detached.

  Further, when there is no load on the pallet a, the caster k attached to the rotary rod 16 is put into the retracted state from the standing state by operating the operation mechanism. Simultaneously with the storage, the bottom 4 of the leg 3 contacts the floor 20.

  After the casters k are stored, when the pallets a are stacked, the bottom 20 is inserted into the heads 26 of the four legs 3.

  Further, in the caster mechanism of the present invention, when the operation lever 25 is rotated to the left side or the right side, the rotary rod 16, the hoisting operation portion 18 and the spring receiving portion 21 are rotated together.

  At the time of stacking, since the caster k is in the retracted state, it is not caught.

In the pallet which attached the caster mechanism for pallets etc. of this invention, it is a partially notched expansion perspective view of the state which the caster stood up.

It is a partially cutaway enlarged perspective view of the pallet in a state where the caster mechanism is stored.

It is a partially notched enlarged front view of the state where the caster as the main part stands up.

It is a partially notched enlarged front view of the state where the caster of the main part is stored.

It is a side view of the pallet where the caster of the caster mechanism stands.

It is a front view of the pallet where the caster of the caster mechanism stands.

It is a partial missing side view of the caster mechanism.

Explanation of symbols

a pallet k caster 1 frame 2 frame 3 leg 4 bottom 5 inner frame 6 frame 7 cushioning material 8 pin 9 frame 10 frame 12 gate cushioning material 13 outer side surface 14 substrate 15 fitting insertion hole 16 rotating rod 17 mounting bracket 18 raising and lowering operation Part 18a Spacer 18b Connection part 18c Gap part 19 Wheel 20 Floor 21 Spring receiving part 22 Pin 23 Spring body 24 Outer side 25 Operation lever 26 Head 27 Stopper

Claims (1)

In a pallet that has a quadrangular shape and a vertical leg that protrudes below the frame at the corner of the horizontal frame,
The left and right sides of the outer surfaces of the pair of opposing frames in some frames constituting the horizontally frame insertion hole possess the left and right of,且下side bottom parallel horizontal shaped substrate A rotating rod that is perpendicular to the opposing frame and is rotatable between a frame that fixes the substrate and a frame that fixes the substrate and a frame that faces the frame. A plurality of casters are mounted on the rotary rods, and a plurality of casters are positioned inside the horizontal frame. When the casters are not used, the casters are in a retracted state, and the bottoms of the plurality of legs contact the floor surface or the like. When the caster is in use, the caster stands up from the stowed state, the bottom of the leg rises from the floor, etc., and the wheels constituting the caster are attached so as to contact the floor, etc. The bottom of the pallet is formed in a concave shape so that the head of the leg portion of the separate pallet can be securely inserted, and the end of the rotary rod protruding from the outer surface of the frame for mounting the substrate, A spring receiving portion is attached in parallel with the substrate, and a pin projecting into and out of the insertion hole of the substrate is provided at one end portion between the spring receiving portion and the substrate, and the other end portion is connected to the rotating rod. A undulation operation part is provided, and a spring body is interposed between the spring receiving part and the undulation operation part, and an operation lever is attached to the undulation operation part, and the operation lever is attached to the spring reception part. When pressing to the side, the pins of the undulation operation part come out of the insertion hole, and when the pins are inserted into the insertion holes on the left side of the substrate, the plurality of casters are simultaneously stored and are not used, When the pin is inserted into the right side insertion hole, a plurality of Pallet caster mechanism, characterized in that the terpolymer is grounded using state standing floor surface or the like.