JPH0343149Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement of a four-sided framed pallet having an opening/closing door provided with a door stopper on a framed pallet that is folded into an L-shape lying on its side.

[Conventional technology]

Conventionally, as this type of loading platform, for example,
In the framed pallet according to No. 20267, one side edge of the right side edge is fixed to the rear side frame to constitute a square-shaped frame member, and one side edge of the left side frame is rotatably attached to the left side edge of the rear side frame. In addition, an auxiliary rod is removably hooked between the other side edges of the right side frame and the left side frame, and one side edge of the bottom frame is rotatably attached to a predetermined height of the lower part of the rear side frame. It has been known. In the above-mentioned framed pallet, the left side frame can be rotated and folded into a horizontal L-shape when stored, so space can be saved when stored. When adopting the above-mentioned folding configuration, if a door is provided in the front, it will get in the way during the above-mentioned folding process, so it is necessary to leave it open.Auxiliary rods are removably hooked to the opening to allow the goods to be loaded onto pallets. Prevents items from falling during transportation. However, in the above configuration, the auxiliary rods only restrict the opening on the front side in the width direction, so when the height of the loaded items is low (small items), the auxiliary rods provided above and below are If the gap was smaller than , there was a risk that the loaded items would fall through the gap. It was also developed in 1977 as a double door structure.
No. 146646 and Japanese Utility Model Application Publication No. 103955/1987 are disclosed, but in both of these, the structure of the lock when opening and closing the door is complicated, and it is not possible to lock these doors individually.

[Problem that the invention attempts to solve]

This idea was devised in view of the above circumstances, and the main problem was that although the pallet with a frame could be folded into an L-shape on its side, the front opening could be opened and closed independently in the double-door style. To provide a pallet with a four-sided frame, which has an opening/closing door which is provided with a door stopper that locks each door stopper individually with a simple structure.

[Means to solve the problem]

In order to solve the above problem, this invention fixes the proximal edge of the fixed side frame perpendicular to one side edge of the back frame,
The base edge of the rotating side frame is hinged to the other side edge of the back frame, and the base edge of the base plate is pivotally connected to the back frame to form a pallet with a frame that can be folded into an L-shape lying horizontally (a ) Forming a sliding tube that is fitted onto the rods at the front ends of the fixed side frame and the rotating side frame so as to be slidable up and down, and which is rotatably pivoted around the rods; (b) the sliding tube; (c) a fixed cylindrical part is provided on the rod member, the fixed cylindrical part abutting the sliding cylindrical part of the door stopper on the lower side; (d) The sliding cylinder part of the door stopper is provided with a protrusion that hangs down in the downward extension direction; (e) The door stopper is installed on the upper surface of the fixed cylinder part in the door open position and the closed door position. A technical measure is taken to form a cam surface consisting of a pair of recesses into which the protrusions fit into each other when displaced to a certain position, and a surface in which the protrusions can slide between the recesses.

[Effect]

With the above structure, this invention moves the door stopper up, removes the protrusion of the sliding cylinder from the recess of the fixed cylinder at the door closing position, and slides it into the recess at the door open position. As a result, the door stopper is rotated in a double-folding manner to load articles onto the base plate, and returned to the closed door position to restrain the front opening portion. Thereby, there is no risk that the article will be restrained in the height direction by the door stopper and fall off. In addition, when the pallet with frame is not in use, the door stopper is fixed in the open door position, and when the base plate is rotated to the back frame side and the rotating side frames are rotated inward and folded, the pallet can be folded into an approximately horizontal L-shape. Therefore, four-sided framed pallets with multiple opening/closing doors can be stacked in front of each other in multiple stages for storage.

【Example】

A preferred embodiment of the four-sided framed pallet having an opening/closing door of this invention will be described below with reference to the drawings. A four-sided framed pallet (hereinafter referred to as a framed pallet) 1 having an opening/closing door has a back frame 3 in the shape of a rectangular fence, as shown in FIGS. 1 to 3.
The base end edge of the fixed side frame 4 in the shape of a rectangular fence perpendicular to one side edge is fixed, and the base end edge of the rotating side frame 5 in the shape of a rectangular fence is hinged or pivoted to the other side edge of the back frame 3. P2
The base plate (pallet) 2 can be folded upward by pivotally attaching the proximal edge P1 to the back frame 3. In addition, the above-mentioned back frame 3, fixed side frame 4 and rotating side frame 5
Each has a caster 9 at its lower end, and has a known construction that allows the base plate 2 to be held in a hollow position where it can be supported by a fork and to be slidable. On the front part of such a framed pallet 1,
In the case of this embodiment, door stoppers 6 and 7 are provided on the left and right sides so that the door can be opened so-called double doors. In this embodiment, the left and right door stoppers 6, 7 are comprised of rod members 6a, 7a set at a height approximately equal to the total height of the framed pallet, and a pair of upper and lower brackets B1, B2 extending horizontally outward. It is made up of. The outer ends of the brackets B1 and B2 are connected to the rod members 4' on the front edges of the stationary side frame 4 and the rotating side frame 5,
5' respectively. That is, sliding cylinder parts 40 and 50 are provided at the outer ends of the upper brackets B1 and B1, respectively.
It is coaxially fitted into the rod members 4' and 5' and is attached so as to be slidable up and down and rotatable in the circumferential direction. As shown in FIG. 5, fixed cylinder portions 41, 51 are fixed to the lower portions of the rod members 4', 5'. As can be seen more clearly in FIG.
The fixed side cam 42 has cutouts 42a, 42b and 52a, 52b formed at the door opening point parallel to the fixed side frame 4 or the rotating side frame 5 and at the door closing point parallel to the fixed side frame 4 or the rotating side frame 5, respectively. On the other hand, the lower brackets B2 of the door stoppers 6, 7 are integrally provided with rotating cylinder parts 43, 53 which are loosely fitted to the rod members 4', 5' so as to be rotatable and slidable up and down. , are placed coaxially on the upper part of the fixed cylinder parts 41 and 51. The notch 4 is provided at the lower edge of the rotating cylinder portions 43, 53.
Projections 44a, 54a corresponding to 2a, 42b and 52a, 52b are formed and are configured to be caught in the notches when rotated by a predetermined angle. With the above structure, in use, when the door stoppers 6, 7 are lifted upward, the stationary cams 42, 52 and the rotating cams 44, 54 become free and can be freely rotated. Therefore, when closing the door, the door stoppers 6 and 7 are rotated to the position where the front opening portion is closed, and the notch 42a,
Protrusions 44a, 54a are dropped into 52a to restrict rotation. As a result, the front opening of the framed pallet 1 is restrained in the height direction, so even if cardboard boxes and other cargo are loaded on the base plate 2 in multiple stages and transported, they will not fall out through the opening. There is no danger. In addition, when unloading the loaded articles, the door stoppers 6, 7 are lifted upward to free the cam, and then the door stoppers 6, 7 are rotated to the door opening position (so-called double door opening). , protrusions 44a, 54a are formed in the notches 42b, 52b at that position.
to restrict rotation (see Figures 4 and 6). Here, the rod members 4', 5' have sliding cylinder parts 40, 50.
Alternatively, it is preferable to provide a protrusion (not shown) that restricts the upward sliding stroke of the rotating cylinder portions 43, 53 so that the door stoppers 6, 7 will not be raised more than necessary. When the framed pallet 1 is folded and stored, the base plate 2 is folded upward toward the back frame 3 and hooked to the back frame 3 with a hook (not shown), as shown in FIG. At this time, this embodiment has an intermediate shelf 8 parallel to the base plate 2, as shown in FIG. can. Next, as shown by the dashed line, the rotating side frame 5 is rotated inward and folded, and the framed pallet 1 is folded into an L-shape lying on its side, and the folding is completed. In this state, by sequentially stacking a plurality of framed pallets 1 forward, they can be stored and stored in a space-saving manner. Next, a four-sided framed pallet 1 having an opening/closing door shown in FIG. 7 shows a different embodiment in which door stoppers 6 and 7 are provided in two stages, upper and lower. This framed pallet 1 has door stoppers 6 and 7.
is divided into upper and lower parts, respectively, and the upper door stopper 6
a, 7a and lower door stoppers 6b, 7b. And this upper and lower door stopper 6a,
6b, 7a, 7b are respectively provided with a pair of upper and lower brackets B1', B, and each of the brackets B1', B2' is provided with a sliding cylinder part 40', 50' at the upper part, respectively. Rotating cylinder part 4 at the bottom
3' and 53' are provided. Also, the fixed side cams 42', 5' are attached to the rod members 4', 5'.
Fixed cylinder portions 41' and 51' each having a diameter of 2' are fixed in upper and lower stages. Since the other configurations are the same as those in the previous embodiment,
Identical components are given the same reference numerals and their explanations will be omitted. Thereby, the upper door stoppers 6a, 7a and the lower door stoppers 6b, 7b, which are independently divided into four parts (upper, lower, left and right), can be freely opened and closed. Therefore, during loading, the lower door stoppers 6b and 7b are closed in the middle of stacking from the bottom to stabilize the loaded items, and then further loading can be carried out on top of them, which further improves work efficiency. be able to. In the above embodiment, a structure in which a bracket is provided on a rod material as a door stopper is illustrated, but in this invention, the shape of the door stopper is not particularly limited, and it may have the same fence shape as the back frame 3, etc. You can. Further, the width of the door stopper is not particularly limited, and may be approximately half the width of the back frame. In Figure 8, the door stopper is shaped like a fence,
A different embodiment is shown in which the front opening is substantially closed. This case is the same as the previous embodiment except that the door stopper has a different shape and a different width, so a description thereof will be omitted. In addition, in this invention, the shape of the door stopper,
Of course, the design of the configuration can be changed as appropriate depending on the type of articles to be loaded.

[Effect of the idea]

This invention has the above structure, so while it has a structure that allows the framed pallet to be folded horizontally into an L-shape, it also has a door stopper on the front opening that opens and closes independently like a double-door style, allowing it to be elevated. Items can be restrained in the horizontal direction. The door stopper has a simple structure and can be fixed individually at the open and closed positions of the door stopper by engaging the protrusion of the sliding tube and the recess of the fixed tube, making it easy to use. Improves operability when storing. Furthermore, since the door stopper can be installed in multiple stages in the vertical direction, it has excellent versatility.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an embodiment of a four-sided framed pallet with an opening/closing door of this invention, Figure 2 is a front view of the same, Figure 3 is a side view, Figure 4 is a plan view of the same, and Figure 5 is a side view of the pallet.
6 is a plan view of the cam, FIG. 7 is a front view of a different embodiment in which the door stopper is divided into upper and lower halves, and FIG. 8 is a front view of a different embodiment. 1... Pallet with frame, 2... Base plate, 3... Back frame, 4... Fixed side frame, 4'... Rod material, 5... Rotating side frame, 5'... Rod material, 5a... Fittings, 6...
Stopper for left door, 7... Stopper for right door, 8...
Intermediate shelf, 9...Caster, 40,50...Sliding cylinder part, 41,51...Fixed cylinder part, 42,52...Fixed side cam, 43,53...Rotating cylinder part, 44,5
4...Rotating side cam.

Claims (1)

[Claims for Utility Model Registration] (1) The base edge of the fixed side frame perpendicular to one side edge of the back frame is fixed, and the base edge of the rotating side frame is hinged to the other side edge of the back frame. The base edge of the base plate is pivoted to the back frame to form a pallet with a frame that can be folded horizontally into an L shape, and is externally fitted to the rods at the front ends of the fixed side frame and rotating side frame so as to be able to slide up and down. At the same time, it has a sliding cylinder part rotatably pivoted around the rod material, and a door stopper is provided which is supported by the sliding cylinder part and can open and close the front opening part of the pallet in a double-door style; A fixed cylindrical part that abuts the sliding cylindrical part of the door stopper on the lower side is fixed on the material, and a protrusion that hangs down in the downward extension direction is provided on the sliding cylindrical part of the door stopper, and the above fixing is performed. A cam consisting of a pair of recesses into which the protrusions fit respectively when the door stopper is displaced to the door open position and the door close position, and a surface in which the protrusions can slide between the recesses, on the upper surface of the cylindrical part. A pallet with a four-sided frame having an opening/closing door characterized by forming a surface. (2) A pallet with a four-sided frame having an opening/closing door according to claim 1 of the utility model registration, characterized in that the door stoppers are provided in two stages, upper and lower. (3) A four-sided framed pallet having an opening/closing door as set forth in claim 1 of the utility model registration claim, wherein the left and right door stoppers are each shaped like a fence and substantially cover and close the front opening. .