JP2891964B2 - Pallet spacing holder set - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet-related technique serving as a mounting table for articles, and more particularly to a pallet spacing holder set for assembling two pallet plates with a spacing therebetween. It is about.

[0002]

2. Description of the Related Art As a conventional pallet of this type, a pallet made of wood is generally used. This wood pallet is formed by interposing a plurality of crosspieces serving as spacers between two upper and lower pallet boards (for example, veneer boards), and nailing each of the pallet boards from the front and back surfaces to the crosspiece. . However, although a wooden pallet can be easily formed by nailing, it is dangerous because the surface is easily crushed (spikes are easily stabbed in the hand). In some cases, the nail head might damage the mounted article.

In recent years, a pallet made of a plastic plate or corrugated cardboard has been manufactured instead of a pallet made of wood. Such a pallet made of plastic or corrugated cardboard cannot be fixed with nailing to a spacer (a spacing member) interposed between the two plates, and a dedicated spacing holder set is used. Had been assembled. That is, the spacing member set has a spacing member having a predetermined height and a threaded cylinder formed on each of the upper and lower end surfaces, and a threaded cylinder that can be screwed to each of the upper and lower threaded cylinders of the spacing member. In addition, the screw cylinder comprises a pair of upper and lower fastening members provided with a flange at one end. On the other hand, holes are formed in the upper and lower pallet plates at a plurality of locations (for example, nine locations). A spacing member is interposed at a position corresponding to each hole between the two upper and lower pallet plates, and the threads of the upper and lower fastening members are screwed into the upper and lower threads of the spacing member through the respective holes of the pallet plate. The pallet is formed by tightening the edges of the holes of the pallet plate between the upper and lower end faces of the spacing member and the flange of the fastening member.

[0004]

However, in the pallet assembled using the above-mentioned conventional spacing holder set, if the pallet has been used for a long period of time, the screw member of the fastening member is caused to vibrate by vibration or the like. May loosen against the screw tube. And
If the tightening member is loosened, the upper and lower pallet plates or the pallet plate and the spacing holder set may rattle, and the flange surface of the tightening member floats up from the pallet plate surface and obstructs the mounting of the article. There was a problem of becoming.

After the pallet plate is tightened between the tightening member and the spacing member, the flange portion of the tightening member is fixed to the pallet plate so that the tightening member does not loosen.
For example, it is conceivable to fix with screws, but in that case, it is necessary to machine holes for screws on the pallet plate side,
Further, there is a problem that an operation of screwing a screw after tightening with a fastening member is required.

[0006] The present invention provides a pallet using such a set of spacing members, which has a structure capable of ensuring that the fastening member screwed and tightened to the spacing member is not loosened without performing any special operation. It is an object of the present invention to provide a pallet spacing holder set.

[0007]

The present invention has the following structure as means for solving the above-mentioned problems. That is, the interval holding tool set for a pallet according to the present invention includes an interval holding member having a predetermined height and having a vertically oriented screw tube formed on each of the upper and lower end surfaces, and an upper and lower screw tube of the interval holding member. And a pair of upper and lower fastening members having a flange provided at one end of the screw cylinder. Either of the screw cylinder on the spacing member side and the screw cylinder on the fastening member side may be a female screw cylinder (or a male screw cylinder).

[0008] Then, the space holding device set includes upper and lower two.
With the spacing member interposed between the two pallet plates, the screw cylinders of the tightening members are screwed into the respective screw members of the spacing member through the holes of the pallet plate, so that the lip of the hole of the pallet plate is formed. Can be tightened between the upper and lower end faces of the spacing member and the flange of the fastening member.

Further, in the present invention, one of the screw cylinder of the spacing member and the screw cylinder of the fastening member is a discontinuous screw having a threadless portion in the circumferential direction. This screwless part is
It is sufficient that at least one location is provided in the circumferential direction, but it is preferable to provide about three locations.

On the other hand, a stopper piece that can be elastically deformed inward and outward is provided on one of the screw cylinder of the spacing member and the screw cylinder of the tightening member (that is, the screw cylinder on which the discontinuous screw is not formed). Has formed. The stopper piece is formed in a part of the cylindrical wall of the screw cylinder, for example, by forming a "U-shaped" kerf and making the continuous part (non-kerf part) a thin part, thereby elastically deforming inward and outward. You will get. It is sufficient that at least one stopper piece is formed,
It is preferable to provide them at two locations at opposing positions (at 180 ° intervals). In this case (two stopper pieces), if three screwless portions of the discontinuous screw are formed at 120 ° intervals, the screw member of the fastening member is screwed to the screw member of the interval holding member. When so, at least one stop piece will correspond to the threadless part of the discontinuous screw.

Further, when the fastening member rotates in the screwing direction of the fastening member, the stopper piece is pushed by the divided threads of the discontinuous screw and is elastically deformed to allow the fastening member to be screwed. When the tightening member is rotated in the screwing direction, the stopper piece has a function of abutting against the inner end face of the split screw thread in the screwing direction to disable the screwing operation.

A plurality of sets (for example, nine sets) are used for the upper and lower pallet plates of the spacing holder set of the present invention, and a pallet is constituted as follows. Holes are formed in each of the upper and lower pallet plates at positions where the spacing holder set is arranged, and the hole diameter of each hole is determined by the outer diameter of the spacing member and the flange of the fastening member. It is set to be small and slightly larger than the outer diameter of the screw cylinder of the fastening member. Then, with the spacing members interposed at the positions corresponding to the respective holes between the two upper and lower pallet plates, the screw tubes of the upper and lower fastening members are respectively passed through the holes of the pallet plates, and the upper and lower portions of the spacing member are respectively passed through. Screw and tighten the screw tube. At this time, when the stopper piece corresponds to the divided thread of the discontinuous screw, the stopper piece is pushed by the divided thread and elastically deforms, and the screwing operation of the fastening member is allowed. Further, when the stopper piece goes over the divided thread of the discontinuous screw and corresponds to the screwless portion, the stopper piece elastically returns to the original position. When the tightening member is screwed in, the stopper pieces alternately correspond to the threadless portion of the discontinuous screw and the divided thread portion, and each time the stopper piece corresponds to the divided thread portion. Then, the stopper piece is elastically deformed and gets over the divided thread portion. Assembling of the pallet is completed when all the spacer sets to be used are assembled in the same manner.

When assembling this pallet, first, a required number of spacing members are fastened to one pallet plate by one fastening member, and then another pallet plate is attached to each spacing member. When they are joined together and tightened by the other tightening members, the assembling work becomes easy. In this assembled state, the rim of each hole of each of the upper and lower pallet plates is clamped between the end face of the spacing member and the flange of the fastening member, and the space between the two pallet plates at the height interval of the spacing member is provided. It is integrated with the parts separated. In the pallet assembled in this manner, the fork of the forklift can be inserted from any side in the horizontal, vertical and horizontal directions.

By the way, when the action of rotating the tightening member in the screwing direction from the tightened state acts, when the stopper piece corresponds to the threadless portion of the discontinuous screw, the stopper piece elastically returns, and One end is stationary at a position where it can abut the end face of the split thread of the discontinuous screw. Then, even in this state, even if a force for further turning the tightening member in the screwing direction acts, the tip of the stopper piece abuts against the end face of the divided thread so that further screwing operation is prohibited. Become. Therefore, the fastening member is not further screwed with respect to the spacing member.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. The spacing holder set according to this embodiment comprises two upper and lower pallet plates 5, 5 arranged at a predetermined interval. It is for assembling while maintaining it. FIG.
6 to 6 show the spacing holder set of the first embodiment of the present application, and FIG. 7 shows a modified example (second embodiment) of the first embodiment.

The spacing member set 1 according to the first embodiment shown in FIGS. 1 to 6 is made of plastic and includes a spacing member 2 having a predetermined height and two upper and lower fastening members 3. Have been.

The spacing member 2 is formed integrally with the outer cylinder 21 and two vertically continuous inner cylinders 22, 22 connected by a horizontal connecting plate 23 and a vertical connecting plate 24. The upper and lower inner cylinders 22, 22 have the same diameter and are positioned concentrically with each other. Further, the inner cylinders 22 are vertically divided by a partition plate 23A at an intermediate position in the height direction of the spacing member 2. Each of the inner cylinders 22 corresponds to a screw cylinder on the side of the spacing member 2 in the claims. In this embodiment, each of the inner cylinders 22
In the following description, each of the inner cylinders will be referred to as a female screw cylinder 22 in view of the fact that the female screw is formed.

The spacing member 2 is formed such that the outer diameter of the outer cylinder 21 is about 120 mm and the height is about 80 mm. The inner diameter of each female screw tube 22, 22 is about 70 mm, and the thickness of the outer tube 21 and each female screw tube 22, 22 is about 2 mm, respectively. The upper and lower end surfaces of the outer cylinder 21 and the female screw cylinders 22
And the upper end surface or the lower end surface of each of them are aligned at the same height.

The female screw formed on the inner surface of each of the upper and lower female screw cylinders 22 is a discontinuous screw 25 having a threadless portion 26 formed in the circumferential direction. In the discontinuous screw 25, for example, divided screw threads 27 each having a range of about 40 ° to 50 ° are formed in three places in the circumferential direction, and an angle of about 80 ° to 70 ° is provided between each of the divided screw threads 27. Screwless part 2 in the range of
6 (three places). In addition, each divided thread 27
The height of (three places) is 2-3 mm.

On the other hand, the upper and lower fastening members 3 and 3 have the same shape and are formed by integrally forming the screw cylinder 31 on one surface of the disk 33, respectively. The screw cylinder 31 is provided with the spacing member 2.
In this embodiment, a continuous male screw 32 is formed in the screw cylinder 31 on the side of the tightening member 3 in this embodiment. In the following description, the screw cylinder on the tightening member 3 side will be referred to as a male screw cylinder 31.

The outer diameter of the disk 33 of the fastening member 3 is about 110 mm, and the outer diameter of the male screw cylinder 31 is about 70 mm.
Outside (the outer circumference of the disk 33) a flange 34 of about 20 mm width
Are formed. The thickness of each of the disk 33 and the male screw cylinder 31 is about 2 mm. A hexagonal hole 30 for inserting a rotating tool is formed in the center of the outer surface of the disk 33.

The male screw cylinder 31 is formed with stopper pieces 4 and 4 which can be elastically deformed inward and outward, respectively, at two positions (at an angle of 180 °) facing each other. Each of the stopper pieces 4 and 4 forms a “U-shaped” incision 41 in a part of the cylinder wall of the male screw cylinder 31, and a continuous portion (non-incision portion) thereof is enlarged in FIG. Thin part 42
By doing so, it is possible to elastically deform inward and outward. Each of the stopper pieces 4 and 4 is defined by a U-shaped cut groove 41 so that the front side in the screwing direction is continuous, and the tip side (reference numeral 43 side) of the stopper piece 4 is inward and outward. It can be elastically deformed. The tip 43 of each of the stopper pieces 4 and 4 is formed to be thick.
The outer end of 3 is located at the same position as the thread height of the male screw 32 in the natural state. Further, the range from the front end portion 43 to the thin portion 42 on the outer surface side of the stopper piece 4 is the inclined surface 4.
It is 4.

As the pallet plate 5 on which the spacing holder set 1 is used, a plastic plate is suitable if it requires strength, and corrugated paper should be used if a relatively lightweight article is to be placed. Can be. Further, the size of the pallet plate 5 can be appropriately set according to the application. In the pallet plate 5 shown in FIG.
A square of about m is employed. Holes 51 are formed in the pallet plate 5 at positions where the spacing holder set 1 is assembled. In the pallet plate 5 of FIG. 2, a total of nine holes 51 are formed. This hole 5
As shown in FIGS. 3 and 4, 1 has a hole diameter slightly larger than the outer diameter of the male screw cylinder 31 of the fastening member 3. In addition, a concave step portion 53 into which the flange 34 of the fastening member 3 is fitted is formed on the outer edge side of the edge 52 of the hole 51.

As shown in FIG. 2, a plurality of sets (for example, nine sets) are used for the two upper and lower pallet plates 5 and 5 in the spacing holder set 1 of the first embodiment. The pallet is constructed in such a manner. That is, upper and lower 2
At a position corresponding to each hole 51 between the pallet plates 5 and 5,
With the spacing member 2 interposed therebetween, the male screw cylinders 31 of the upper and lower fastening members 3 are respectively passed through the holes 51 of the upper and lower pallet plates 5 and the upper and lower female screw cylinders of the spacing member 2. 22 and 22 are screwed and tightened. The fastening member 3
Is performed by inserting a turning tool into the hexagonal hole 30 of the disk 33. When assembling this pallet, first, the required number of spacing members 2 are fastened to one pallet plate 5 with one fastening member 3, and then another pallet plate 5 is attached to each pallet plate 5. 2 and are tightened by the other tightening members 3, respectively, so that the assembling work becomes easy. In this assembled state, the rim 52 of each hole 51 of each of the upper and lower pallet plates 5, 5 is pressed by the end surface 2 of the spacing member 2 and the flange 34 of the fastening member 3, respectively. , 5 are integrated with a space at the height of the spacing member 2 (about 80 mm). In a state where the tightening members 3 are fully tightened, the flange 34 of the tightening member 3 fits into the concave step 53 of the hole edge 52, and the outer surface of the pallet plate 5 and the tightening member 3 The outer surface of the disk 33 is flush with the outer surface.

When the male screw tube 31 of the fastening member 3 is screwed into the female screw tube 22 of the spacing member 2, the stopper piece 4 engages with the discontinuous screw 25 of the female screw tube 22. When it corresponds to the screwless portion 26, it is in the state shown by reference numeral 4 'in FIG. 6, and from this state of reference numeral 4', the fastening member 3 is further rotated in the screwing direction (the direction of arrow R in FIG. 6). The inclined surface 44 of the stopper piece 4 is
The two divided threads 27 abut against the end face 28 on the near side in the screwing direction, and then the inclined surface 44 is pushed by the divided threads 27 so that the thin portion 42 moves inward as indicated by reference numeral 42 ″. The stopper piece 4 is elastically deformed as indicated by reference numeral 4 ″. Further, when the stopper piece 4 ″ climbs over the divided thread 27 from this state, the stopper piece 4 elastically returns to its original position. When the tightening member 3 is screwed in, the stopper piece 4 is moved. The threadless portion 26 of the discontinuous screw 25 and the divided thread portion 27 alternately correspond to each other. Each time the stopper piece 4 corresponds to the divided thread 27 portion, the stopper piece 4 is elastically deformed and the divided screw It becomes possible to get over the mountain 27. Then, with the fastening member 3 tightened,
The threadless portions 26, 26, 26 of the discontinuous screw 25 are 120
Since the stopper pieces 4, 4 are at 180 ° intervals at an interval of °, at least one of the two stopper pieces 4, 4 corresponds to the threadless portion 26 of the discontinuous screw 25. In this state, the stopper piece 4 corresponding to the screwless portion 26 has elastically returned outward, and from this tightened state, the tightening member 3 rotates in the screwing direction (the direction of the arrow L) due to, for example, vibration. Even when such a function is performed, as shown in FIG. 6, when the distal end portion 43 of the stopper piece 4 abuts on the rear end surface 29 in the screwing direction of the divided screw thread 27, further screwing operation becomes impossible. .

Accordingly, in the apparatus using the spacing member set 1, the fastening member 3 does not loosen carelessly with respect to the spacing member 2, and the fastening member 3 is loosened only by once tightening at the time of assembly. Since the stop function is generated, no special operation is required to prevent loosening.

In the spacing member set of the second embodiment shown in FIG. 7, the threadless portion 36 is provided on the male screw cylinder 31 side of the tightening member 3.
And a discontinuous screw 35 having three divided threads 37 provided in the circumferential direction at the same time. On the other hand, a continuous female screw 25A is formed in the female screw cylinder 22 of the spacing member 2, and the female screw cylinder 22 is opposed to the female screw cylinder 22. Two stopper pieces 4 that can be elastically deformed inward and outward, respectively, are formed at positions (intervals of 180 °).
Each stopper piece 4 has the same structure as that of the first embodiment except that the inclined surface 44 is located on the inner surface side. In the free state, the stopper piece 4 is stopped at a position where the distal end portion 43 abuts against the divided thread 37 of the male screw cylinder 31 as shown by a solid line, and the stopper piece 4 is stopped.
When the member rides on the divided screw thread 37, it is bent outward at the thin portion 42 as shown by a dashed line (reference numeral 4 ').

Therefore, the spacing member set of the second embodiment shown in FIG. 7 has the same function as that of the first embodiment. That is, when the tightening member 3 is rotated in the screwing direction (the direction of arrow R), the stopper piece 4 is not moved until the leading end face 38 of the split thread 37 in the screwing direction abuts the inclined surface 44 of the stopper piece 4. 4 is bent outwardly (reference numeral 4 ') to allow the turning operation in the screwing direction.
Is rotated in the screwing direction (arrow L direction), the trailing end surface 39 in the screwing direction (leading end surface in the screwing direction) of the split screw thread 37 abuts on the leading end 43 of the stopper piece 4. The rotation of the tightening member 3 in the screwing direction is prohibited.

In each of the above embodiments, the screw tube 22 on the spacing member 2 side is a female screw tube, and the screw tube 31 on the fastening member 3 side.
Is a male screw cylinder. In other embodiments, the screw cylinder 22 on the spacing member 2 side is a male screw cylinder, and the screw cylinder 31 on the fastening member 3 side.
May be a female screw cylinder. Also, in this case, the position where the stopper piece 4 is formed may be the screw tube 22 on the spacing member 2 side or the screw tube 31 on the fastening member 3 side. The various dimensions in each of the above embodiments are merely examples, and it is a matter of course that the design can be changed as appropriate.

[0030]

According to the present invention, the set of pallet spacing members is provided with the screw members 22, 22 or the fastening members 3 of the spacing member 2.
One of the screw cylinders 31 in the circumferential direction with no screw part (2
6, 36), and can be elastically deformed inward or outward in one of the screw cylinders 22, 22 of the spacing member 2 and the screw cylinder 31 of the tightening member 3. Forming a stopper piece 4, and the stopper piece 4
When the tightening member 3 rotates in the screwing direction, the stopper piece 4 is pushed by the split threads (27, 37) of the discontinuous screws (25, 35) and is elastically deformed to allow the screwing operation of the tightening member 3. When the tightening member 3 rotates in the screwing direction, the stopper piece 4 has a function of abutting against the end faces (29, 39) of the divided screw threads (27, 37) to disable the screwing operation.

Therefore, in the case of using the spacing member set of the present invention, the fastening member 3 does not inadvertently loosen with respect to the spacing member 2, and the fastening member 3 is tightened only once at the time of assembly. Since loosening is difficult, there is an effect that no special operation is required for preventing loosening.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a spacing tool set according to a first embodiment of the present application.

FIG. 2 is a perspective view of a pallet assembled using the spacing member set of FIG. 1;

FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 2;

FIG. 4 is an exploded view of FIG.

FIG. 5 is a sectional view taken along line VV of FIG. 3;

FIG. 6 is a partially enlarged view of FIG. 5;

FIG. 7 is a diagram corresponding to FIG. 6 in the interval holder set of the second embodiment of the present application.

[Explanation of symbols]

1 is an interval holding member set, 2 is an interval holding member, 3 is a tightening member, 4 is a stopper piece, 5 is a pallet plate, 22 is a screw cylinder (female screw cylinder), 25 is a discontinuous screw, and 26 is a screwless portion. , 2
7 is a split screw thread, 28 and 29 are end faces, 31 is a screw tube (male screw tube), 33 is a disk, 34 is a flange, 35 is a discontinuous screw, 36 is a screwless portion, 37 is a split screw thread, 41 Is a cut groove, 42 is a thin portion, 43 is a tip, 51 is a hole, and 52 is a lip.

Claims (1)

(57) [Claims] 1. An interval holding member (2) having a predetermined height and having threaded cylinders (22, 22) formed on respective upper and lower end faces in the vertical direction, and upper and lower threads of the interval retaining member (2). A pair of upper and lower fastening members (3, 3) having a screw cylinder (31) that can be screwed to the cylinder (22, 22) and having a flange (34) provided at one end of the screw cylinder (31). Then, with the spacing member (2) interposed between the upper and lower two pallet plates (5, 5), the threaded cylinders (31, 31) of the tightening members (3, 3) are moved to the pallet plate (5). The holes (51) of the pallet plates (5, 5) are screwed into the respective screw cylinders (22, 22) of the spacing member (2) through the holes (51).
2) The upper and lower end faces (2a, 2a) of the spacing member (2).
A pallet spacing holder set capable of being tightened between a pallet and a flange (34) of a fastening member (3), wherein the threaded cylinder (22, 22) of the spacing member (2) or One of the screw cylinders (31) of the fastening member (3) is provided with a discontinuous screw (2) provided with a threadless portion (26, 36) in the circumferential direction.
On the other hand, the other one of the screw tube (22, 22) of the spacing member (2) or the screw tube (31) of the tightening member (3) is elastically deformable inward and outward. The stopper piece (4) is formed such that when the tightening member (3) rotates in the screwing direction, the stopper piece (4) is connected to the discontinuous screw (2).
5, 35) and is elastically deformed to allow the tightening member (3) to be screwed in. When the tightening member (3) is rotated in the unscrewed direction, the stopper is stopped. A spacing member set for a pallet, characterized in that the piece (4) has a function of disabling the screwing operation by abutting against the end faces (29, 39) of the divided screw threads (27, 37).