JP5613358B1 - Wheel structure for dolly - Google Patents

Abstract

The present invention relates to a wheel structure for a dolly that can be detachably attached to a mounting table such as a pallet and used as a dolly. A wheel component 2 includes a plate-like base piece 21 attached to the bottom of the pallet, casters 3 or wheels mounted on the back surface of the base piece 21, and a corner portion of the dolly bottom that stands on the base piece 21. Or it has a pair of corner latching piece 22 latched along an edge part, and the attachment members 24 and 25 for fixing the said wheel structure part 2 to a dolly bottom part so that attachment or detachment is possible. The base piece 21 has a plurality of holes 11a and 12a for fixing or attaching the attachment members 24 and 25 with a fixture.

Description

  The present invention relates to an improvement in a wheel structure for a dolly that can be detachably attached to a mounting table such as a pallet and used as a dolly.

As a pallet dolly disclosed in JP 2011-219136 A, the applicant of the present invention is a pallet dolly that is detachably connected to the bottom surface side of the pallet so that the pallet can run, and has four locations at four corners on the bottom surface side of the pallet, Or, four or three hooking portions that are provided on the base piece so as to be hooked at three positions in the middle of the side opposite to both corners of one side on the bottom side, and the base of each hooking portion A configuration consisting of one or more casters attached to the back side of the piece has been proposed and given reasonable results.
As a result of diligent research, the present applicant has developed a versatile pallet dolly that can be easily mounted.

JP 2011-219136 A

The problem to be solved by the present invention is for a pallet in which a wheel component provided with casters can be hooked or screwed to a pallet and used as a cart, and the wheel component can be removed from the pallet when not in use. To provide a dolly.
Another object of the present invention is to provide a pallet dolly in which a hole is provided in a base piece and an attachment member to the pallet can be attached to the base piece.

In order to solve the above problems, the present invention
In the wheel structure for a dolly used as a dolly by detachably hanging the wheel component on the bottom surface of a mounting table such as a pallet,
A wheel component is a plate-like base piece attached to the bottom of the pallet, a caster or a wheel mounted on the back surface of the base piece, and a corner or an edge of the dolly bottom standing on the base piece. It consists of a pair of corner latching pieces to be latched, and an attachment member for removably fixing the wheel component to the dolly bottom ,
The mounting member is composed of an inner spring portion and an outer spring portion each having a base end fixed to a base piece which is an inner side of a corner hooking piece,
The corner hooking piece has a window hole on one side,
The inner spring portion is formed in a substantially C-shaped cross section that extends to a position where the tip portion of the curved portion protruding outward at the intermediate position substantially contacts the inner wall surface of the corner latching piece,
The outer spring portion is formed in a substantially S-shaped cross section, extends outward from a curved portion projecting inward downward, passes through the window hole of the corner latch piece, and an upper portion is a corner hook on the upper portion of the window hole. It is formed in a substantially S-shaped cross section that is hooked on the outer surface of the stopper piece,
The outer peripheral wall of the corner of the pallet arranged along the inner wall surface of the corner latching piece can be clamped by the curved portion of the outer spring portion and the curved portion of the inner spring portion .

An attachment member is attached corresponding to a pallet, and a pallet can be used as a dolly.
When the pallet is made of a synthetic resin, the leaf spring that presses the outer peripheral wall in the vicinity of the corner of the corner girder of the pallet is used as the mounting member, so that it can be easily attached and detached while being securely hooked.
Further, by connecting the base pieces of all the wheel constituent parts attached to the pallet with a brazing material, the wheel constituent parts can be detachably attached to the pallet regardless of the structure of the bottom surface of the pallet.
Furthermore, the wheel component can be connected to a wooden pallet by using a screw in which the screw is mounted upward from the hole of the base piece as the mounting member.

It is a perspective view which shows the wheel structure part of Example 1. FIG. It is the perspective view which looked at the wheel component from a different angle. It is a perspective view of the wheel composition part from another angle. It is sectional drawing of the state which the wheel structure part latched to the outer peripheral wall of the corner part of a pallet. It is a perspective view of the state where the wheel component is attached to the pallet. FIG. 6 is a bottom view of FIG. 5. FIG. 6 is a side view of FIG. 5. It is a perspective view of the state which attached the wheel component part to the frame-shaped mounting base. It is a bottom view of the state which attached the wheel structure part to the frame-shaped mounting base. It is a side view of the state which attached the wheel structure part to the frame-shaped mounting base. It is a perspective view of the state hung on the reinforcing rib of the pallet using a hook. It is a perspective view of the state hung on the reinforcing rib of the frame-shaped mounting table using a hook. It is a perspective view which shows the different Example which connected between the wheel structure parts mutually using the saddle material. It is the bottom view. It is a perspective view of a wheel composition part which used a screw part for attaching to a wooden pallet. It is a perspective view of a different angle of a wheel composition part using a screw part for attaching to a wooden pallet. It is the perspective view which mounted | wore the wheel structure part to the wooden pallet. It is the bottom view.

  A preferred embodiment of a wheel structure for a dolly according to the present invention will be described below with reference to the drawings.

  The wheel structure for a dolly shown in FIG. 1 to FIG. 8 is used as a dolly (cart) 1 by detachably hanging the wheel component 2 on each corner 8c on the bottom surface of a rectangular synthetic resin pallet 8. is there.

[Wheel component]
The wheel component 2 includes a plate-like base piece 21 that supports the bottom of the pallet 8;
The caster 3 mounted on the back surface of the base piece 21, a pair of corner hooking pieces 22 standing on the base piece 21 and hooked along the corner portion 8 c at the bottom of the pallet 8, and the wheel configuration It comprises an attachment member 3 for removably fixing the portion 2 to the bottom of the pallet, and a hole formed in the base piece 21 for fixing the attachment member 3 to the base piece 21.
In this embodiment, the attachment member 3 includes an inner spring portion 24 and an outer spring portion 25.

[Base piece]
In the illustrated example, the base piece 21 is formed of a hexagonal plate in plan view, and is formed so that at least one of the two sides is approximately 90 ° in accordance with the corner portion 8 c of the pallet 8.

[Hole]
In the case of the present embodiment, the hole of the base piece 21 is a first hole formed in the bottom surface of the rectangular first recess 11 formed along the inside of each of a pair of corner hooking pieces 22 described later. 11a, a substantially rectangular shape formed at a corner between the pair of corner hooking pieces 22 and the second hole 12a drilled in the bottom surface of the second depression 12 connected to or separated from the first depression 11. The third hole 13a is formed in the bottom surface of the third recess 13.

[Caster]
A large approximately square recess 14 is formed in the center of the base piece 21, and a fourth hole portion 14 a is formed in the bottom surface of the recess 14. A mounting plate (not shown) made of a flat plate that pivotally supports these wheels is overlaid and fixed with a fixture K such as a rivet or bolt.
The head of the fixture K is formed so as not to protrude above the recess 14.
In this embodiment, only one pivotable caster 3 is fixed to the base piece 21 via the mounting plate 31, but a wheel may be directly supported on the base piece 21.
One or more casters 3 or wheels 2 may be fixed to the base piece 21.
Further, the caster 3 may turn or go straight.

[Corner hanging piece]
The corner latching pieces 22 are erected vertically on the sides intersecting with the 90 °.
In this embodiment, the corner latching piece 22 has two upper and lower heights, one (the intersecting side in the illustrated example) 22a is high, and the other 22b is low. 23 is drilled.

[Inner spring part]
The inner spring portion 24 has a fixing piece 24a formed horizontally at the lower portion thereof, and the fixing piece 24a is fitted into the recess 11 of the base piece 21, and a hole formed in the fixing piece 24a is formed in the recess 11. It aligns with the first hole on the bottom and is fixed to the base piece 21 through a fixture K such as a rivet or bolt.
The spring portion 24b connected to the fixing piece 24a is formed in a substantially C-shaped cross section, is bent and bent outwardly on one inner side 22a of the corner hooking piece 22, and the tip portion is the corner hooking piece 22. It has a shape extending to a position almost in contact with the inner surface of the one 22a.

[Outside spring part]
The outer spring portion 25 has a fixing piece 25a formed horizontally in the lower portion, and the fixing piece 25a is connected to the first recess 11 or fitted into the separated second recess 12, and the fixing piece 25a. This hole is aligned with the second hole 12a of the base piece 21, and the fixing tool 25a is fixed to the base piece 21 through a fixing tool K such as a rivet or a bolt.
The spring portion 25b connected to the fixing piece 25a has a substantially S-shaped cross section. The spring portion 25b is bent inwardly 25c, extends outward, passes through the window hole 23, and the upper portion 25d is bent inward again. The shape is such that it can be hooked to the outer surface of the corner hooking piece 22 at the top of the window hole 23.

Since it has the shape described above, the corner of the pallet 8 is formed by using the curved portion 25c that projects inward below the outer spring portion 25 and the curved portion 24c that projects outward at an intermediate position of the inner spring portion 24. The outer peripheral wall 8a connected to the left and right of the corner of the part beam can be clamped from both the inner and outer surfaces.
That is, in this embodiment, the pallet 8 is made of a synthetic resin, and a plurality of reinforcing ribs that reinforce the girders and crosspieces are formed on the bottom surface. It has a thick outer peripheral wall 8a.
Therefore, when the wheel component 2 is aligned with the corner portion 8c on the bottom surface of the pallet 8 and the corner hooking piece 22 is arranged so as to overlap the outer peripheral wall surface of the corner portion 8c of the pallet 8, the outer peripheral wall 8a of the pallet 8 is As described above, the curved portion 25c projecting inward below the outer spring portion 25 and the curved portion 24c projecting outward at the intermediate position of the inner spring portion 24 can be pinched in a repulsive manner.

In this way, the wheel component 2 can be attached to the pallet 8 by pressing the outer peripheral walls 8a on both sides of the corner of the pallet 8 with the two corner latching pieces 22.
When the wheel component 2 is removed from the pallet 8, the wheel component 2 can be easily removed by pulling the wheel component 2 downward against the clamping force between the outer spring 25 and the inner spring 24.
When the outer spring portion 25 and the inner spring portion 24 are fixed to the base piece 21, the head of the fixture K is immersed in the first and second recesses 11 and 12 and does not protrude upward. 21 is a substantially flat surface, and the bottom surface of the pallet 8 can be placed with substantially no gap.

[Locking shaft]
In the present embodiment, one or a plurality of the corner pieces provided between the pair of corner locking pieces 22 of the base piece 21 can be inserted into a hole formed in the bottom surface of the corner portion 8c of the pallet 8 with substantially no gap. The two locking shaft portions 26 are fixed.
The locking shaft portion 26 is composed of a pair of left and right pieces 26 a extending vertically and a fixing piece 26 b formed horizontally at the lower portion of the piece, and the fixing piece 26 b is connected to the corner portion of the base piece 21. It fits into the three recesses 13, and the hole of the fixing piece 26b is aligned with the third hole 13a of the base piece 21 and fixed with a fixture K such as a rivet or bolt.

This locking shaft portion 26 is formed when a hole or a recess that is recessed upward is formed in the corner portion surrounded by the outer peripheral wall 8a of the synthetic resin pallet due to the shape of a reinforcing rib or a crosspiece. The locking shaft portion is inserted into the recess to position the base piece so that the base piece does not slide along the pallet bottom surface.
The position and number of the locking shaft portions 26 can be determined according to the structure of the bottom surface of the corresponding pallet.

[hook]
In the present embodiment, positioning may be performed by locking to the pallet 8 using the hook 27 instead of the locking shaft portion 26 or together with the locking shaft portion 26 (see FIGS. 9 and 10).
The hook 27 is attached to one of the holes formed in the base piece 21, in the illustrated example, a fifth screw hole 15 a (see FIGS. 1 to 3) formed near a long hole 17 a described later.

That is, a screw is engraved at the lower end of the hook 27, and the hook 27 does not come out of the base piece 21 with a washer 27 a and a nut 27 b from the back surface of the base piece 21 at the lower part of the hook 27 inserted into the fifth screw hole 15 a. So that they are connected.
The hook 27 attached in this way can be hooked on a crosspiece or reinforcing rib 8b that is formed on the bottom surface of the pallet 8 and is open to the deck on the top surface, and can be positioned.
In this embodiment, the hook 27 is attached to the fifth screw hole 15a. However, the hook 27 may be attached to other holes or screw holes depending on the positional relationship between the pallet 8 and the reinforcing ribs 8b.

As shown in FIGS. 11 to 12, the attachment member 3 according to the second embodiment has a structure using a bridging member 35 that connects the wheel components 2.
In the case of the present embodiment, the wheel component 2 is attached to the pallet 8 for each corner, but the wheel component 2 is connected to the pallet 8 by the saddle member 35.

[Food material]
The eaves member 35 is made of a small-diameter hollow or solid metal wire, and is formed with a bent portion 35a in which both end portions are bent in an eaves shape.
The same brazing material 35 is connected between the wheel components 2 provided side by side on the same side of the pallet.
That is, the collar member 35 is fixed to the first hole portion 11 a or the second hole portion 12 a of the corner hooking piece 22 extending in parallel with the same side of the pallet 8 by the pressing metal 36.

The holding metal fitting 36 has a fixing piece 36a formed horizontally at the lower part, and has a holding portion 36b having an arcuate cross section that fits around the collar member 35, and is formed on the fixing piece 36a. The hole is aligned with the first hole portion 11a or the second hole portion 12b of the base piece 21, and is fixed to the base piece 21 through a fixture K such as a rivet or a bolt.
Further, the base piece 21 is provided with a locking hole 16a into which the bent portion 35a of the saddle material is inserted at a position close to the corner latching piece 22 (although the embodiment is different, Since the arrangement is the same, see FIG. 13 (a)).

Accordingly, the left and right corner latching pieces 22 of each wheel component 2 are integrally connected by the saddle member 35.
In the present embodiment, the base piece 21 further has a long hole 17a formed at a diagonal line at the corner of the tip, and is bent downward in a U-shaped cross section toward the outside of the long hole 17a. The support portion 18 is integrally formed (see FIG. 1).
The support member 18 is fixed with a saddle member 37 for connecting the wheel constituent portions 2 arranged at diagonal positions.

This saddle member 37 is a linearly extending saddle member, and has threaded portions at both ends.
And the edge part of this brazing material 37 can be passed through the said support part 18, and the nut N can be screwed together from the outer side of the thread part of the front-end | tip, and the brazing material 37 can be fixed to the long hole 17a.
In this embodiment, the saddle member 37 is formed in a cross shape, and the four wheel constituent parts 2 are connected in a diagonal direction by one cross-like saddle member 37.
Thereby, since the four wheel component parts 2 are fixed by the saddle members 35 and 37 in each of the vertical direction, the horizontal direction, and the diagonal direction, the corner latching piece 22 and the base piece 21 of each wheel component part 2 are provided. Thus, the pallet 8 can be supported.

The attachment member 3 of Example 3 has a structure that can be attached to a wooden pallet 8 'illustrated in FIGS.
In the present embodiment, a plurality of screw holes are formed avoiding the positions of the first to fifth hole portions 11a to 15a and the long hole 17a.

That is, in the illustrated example, the first and second screw holes 41 and 42 are formed at the left and right intermediate positions on the outside of the first and second holes 11a and 12a, and behind the third hole 13a. A third screw hole 43 is formed, and fourth and fifth screw holes 44 and 45 are formed on the left and right sides of the long hole 17a.
The first to fifth screw holes 41 to 45 are attached with their heads facing downward and the screws facing upward so that the screws S do not come out.

Then, by tightening the screw S to the bottom surface of the pallet 8 ′, the base piece 21 of the wheel component 2 positioned on the bottom surface of the pallet 8 ′ by the corner latching piece 22 is used to fix the wheel component 2 to the pallet 8 ′. It can be tightened to the bottom of the.
In this embodiment, the screw holes are provided separately from the holes 11a to 16a. However, all or a part of the holes may be used as screw holes.

According to the present invention, since the holes of the base piece and the screw holes are arranged in common, the wheel component can be attached to the pallet or the mounting table using various attachment members.
The present invention is not limited to the above embodiments, and various design changes can be made without changing the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Dolly 2 Wheel structure part 3 Caster 4 Connecting member 5 Pivoting structure 8 Pallet 8 'Wooden pallet 8a Outer peripheral wall 8b Crosspiece and reinforcement rib 8c Corner part 11 1st hollow 11a 1st hole 12 2nd hollow 12a 2nd hole Part 13 Third depression 13a Third hole 14 Fourth depression 14a Fourth hole 15a Fifth hole 16a Hole 17a Long hole 18 Bearing 19 Screw hole 21 Base piece 22 Corner locking piece 22a One (higher)
22b The other (lower)
23 Window hole 24 Inner spring part 24a Adhering piece 24b Spring part 24c Bending part 25 Outer spring part 25a Adhering piece 25b Spring part 25c Bending part 26 Locking shaft part 27 Hook 32 Wheel 35 Anchor (Linear)
35a Bent part 36 Presser bracket 36a Fixing piece 36b Presser part 37 Folding material (cross shape)
41 to 45 Screw hole K Fixing tool

Claims (5)

In the wheel structure for a dolly used as a dolly by detachably hanging the wheel component on the bottom surface of a mounting table such as a pallet,
A wheel component is a plate-like base piece attached to the bottom of the pallet, a caster or a wheel mounted on the back surface of the base piece, and a corner or an edge of the dolly bottom standing on the base piece. It consists of a pair of corner latching pieces to be latched, and an attachment member for removably fixing the wheel component to the dolly bottom ,
The mounting member is composed of an inner spring portion and an outer spring portion each having a base end fixed to a base piece which is an inner side of a corner hooking piece,
The inner spring portion is formed in a substantially C-shaped cross section that extends to a position where the tip portion of the curved portion protruding outward at the intermediate position substantially contacts the inner wall surface of the corner latching piece,
The outer spring portion extends outward from a curved portion projecting inwardly downward and passes through a window hole formed in the corner latch piece, and an upper portion of the corner latch piece above the window hole. It is formed in a substantially S-shaped cross section that is hooked to the outer wall surface,
A wheel structure for a dolly characterized in that an outer peripheral wall of a corner of a pallet arranged along an inner wall surface of a corner latching piece can be clamped by a curved portion of the outer spring portion and a curved portion of an inner spring portion .   The wheel structure for a dolly according to claim 1, further comprising a plurality of holes formed in the base piece for fixing or attaching the attachment member to the base piece with a fixture. One or a plurality of shaft portions that can be inserted into a hole portion formed in the bottom surface of the corner of the pallet without any gap are fixed in an upright manner at a corner portion provided between the pair of corner hooking pieces of the base piece. The wheel structure for a dolly according to claim 1 or 2 , wherein the base piece can be positioned. The mounting member is composed of a saddle member that is spanned between base pieces of a plurality of wheel components that are attached to the pallet, and a press fitting that fixes the saddle member to the base piece,
The wheel structure for a dolly according to any one of claims 1 to 3 , wherein the pressing metal fitting is fixed by a fixing metal fitting passed through the hole. The wheel structure for a dolly according to any one of claims 1 to 4 , wherein the base piece is provided with a hook that is hooked to a rib at the bottom of the pallet.

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