JPH0481360A - Locking device for article transporting tool - Google Patents

Abstract

PURPOSE:To facilitate correction work for a through hole after a locking pin is set by installing the first stopper for maintaining a slip-out position and the second stopper for suppressing slip-off, in a locking device for connecting a base panel body to the erection type panel body of an article transporting tool. CONSTITUTION:In an article transporting tool 1, a base panel body 33 is arranged between the lower parts of a back panel body and both the side panel bodies 20, and a locking device 40 for fixing the base panel body 33 to the side panel body 20 is installed at the front edge of the base panel body 33. The locking device 40 has a locking pin 44 guided into through holes 42A and 42B formed on both the side plate parts 41A and 41B of a body 41, and in the locking pin 44, the first stopper 47 for maintaining a slip-off position at the intermediate part is installed through squeezing work, and the second stopper 49 which is shifted by 90 deg. for the first stopper 47 and has the longer projection length than the projection length of the first stopper and the longitudinal length of the through hole is installed, at the position slightly more outside of the first stopper 47.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is mainly used for storing and storing a large number of articles that are often handled in stores, etc., and transporting them by loading them onto a truck or the like as necessary. This invention relates to an article carrier.

2. Description of the Related Art Conventionally, as this type of article conveyance device, for example,
An article transport vehicle disclosed in Japanese Patent No. 8-48926 is provided. In other words, the goods transport vehicle has a rear frame (back panel body) and two side frames (side panel bodies) facing each other at the front on both left and right sides of the rear frame in a gate shape in plan view. A storage bottom frame (base panel body) is arranged between the lower parts of the rear side frame and both side frames, and the lower ends of the rear side frames are connected to both left and right ends, and the lower ends of both side frames are connected to the front end. , each equipped with moving wheels. The bottom frame for carrying items is swingable in an upright manner along the rear side frame via a hinge portion. In addition, the adjacent vertical rods of the rear frame and both sides are connected in the vertical direction by two connectors,
At least one side frame is rotatable along the rear side frame. A locking mechanism is provided for fixing the horizontal bottom frame of the storage platform to the side frame. The outer end of the operating lock pin is inserted into and removed from the hole in the bracket provided in the side frame by sliding the operating rod pin through the operating part bent and formed on the inner end of the operating rod pin. I am free to do so. The withdrawal limit of the operation lock pin is regulated by the front protrusion, and the push-in limit is regulated by the rear protrusion. A slot is formed in the hole to allow the protrusion to pass through, and the rear slot is used for the front protrusion to pass through when setting the operation lock pin.

Problems to be Solved by the Invention According to the above conventional type, the operation lock pin rotates,
When the front protrusion faces the slot, there is a risk that the operating lock pin may be accidentally pulled out. For this reason, the slots are modified by welding or the like after they are set so that they allow the passage of the protrusions at the rear but prevent the passage of the protrusions at the front, but this work is troublesome. In addition, when the locking mechanism is locked, the operation part hangs down due to its own weight. Therefore, when a goods carrier is tried to be transported by a forklift truck, the fork may come into contact with the operation part, making it impossible to lift it stably. Furthermore, the operating rod pin including the operating section is bent and deformed, making it impossible to smoothly perform the desired locking action.

The purpose of the present invention is that after the lock pin is set, the through hole can be easily corrected, the direction of the lock pin can be regulated regardless of its own weight, and the locking action can be performed reliably with a one-touch operation. The object of the present invention is to provide a locking device for an article carrier.

Means for Solving the Problems In order to achieve the above objects, a locking device for an article carrier according to the present invention is a locking device for connecting a base panel body to an upright panel body, the locking device having a main body fixed to the base panel body. and a lock pin that is slidable guided by a through hole formed in the main body and that protrudes to engage a locking portion on the upright panel body side, and a lock pin that is biased to move in the protruding direction and the lateral direction. an elastic body provided between the lock pin and the main body, and a lock pin for maintaining the extraction position that can pass freely through the through hole and engage with the main body from the protruding direction due to the biasing force of the elastic body. a first stopper, a second stopper provided on the lock pin to prevent the lock pin from being pulled out to engage with the main body when it is pulled out more than necessary against the elastic body; It consists of a tightening operation piece.

According to the configuration of the present invention, when setting the lock pin to the main body, the lock pin is inserted into the through hole formed by the caulking operation piece and is passed through the second stopper.

Then, by correcting the caulking operation piece by hammering or the like so that its cut and raised position returns to its original state, the through hole will prevent passage of the second stopper. In use, the biasing force of the elastic body acts on the lock pin in an oblique direction, so when the lock pin is pulled out against the biasing force, the biasing force in the diagonal direction pushes the first stopper. is strongly engaged with the main body side, so that the lock pin is maintained at the extracted position. Then, by moving the inner end of the lock pin against the biasing force, the first stopper is removed from the main body side, and therefore the lock pin projects outward due to the biasing force and engages with the locking portion. This locking position is maintained by the biasing force. As described above, since the direction of the lock pin is restricted by the biasing force of the elastic body, it does not rotate under its own weight.

Example An embodiment of the present invention will be described below based on the drawings.

As shown in FIGS. 7 and 8, the article conveyance tool 1 includes - back panel bodies IO and two side panel bodies 20 facing each other at the front on both left and right sides of the back panel body IO. The back panel body 1 is arranged in the shape of a gate in plan view.
A base panel body 33 is disposed between the lower part of the back panel body 10 and both side panel bodies 20, and the rear wheels 11 are disposed at both left and right ends at the lower end of the back panel body 10, and at the front end at the lower end of both side panel bodies 20. A front wheel 21 is provided on each side. The rear end of the base panel body 33 is connected to the lower end of the back panel body 10 via the hinge device 2, and is therefore swingable in an upright position along the back panel body 10. Further, the adjacent parts of the back panel body 10 and both side panel bodies 20 are connected by a connecting tool 3, and one side panel body 20, that is, the right side panel body 20, is freely rotatable along the back panel body 10. . The base panel body 33
A locking device 40 for fixing the horizontal base panel body 33 to the side panel body 20 is provided at the front end.

Next, details of the main parts will be explained.

In FIGS. 6 to 8, the back panel body 10 includes a gate-shaped outer frame 12 formed by bending a pipe or the like, a lower frame 13 connecting the lower ends of this outer frame 12, and a balance between the outer frame 12. It consists of a plurality of pipe-shaped vertical members 14 arranged between the section 12a and the lower frame 13, and a plurality of horizontal members 15 with a channel-shaped cross section arranged between the vertical rod parts 12b of the outer frame 12. A pin member 16 for supporting the base panel body 33 is attached to the middle portion of the lower frame 13, and plates 17 for attaching rear wheels are fixed to the lower surface at both ends. The rear wheel 11 is attached to the plate 17 via the support bracket 18 and the turning section 19.

In FIGS. 1, 2, and 6 to 8, the side panel body 20 includes a gate-shaped outer frame 22 formed by bending a pipe or the like, and a lower frame connecting the lower ends of this outer frame 22. 23, a plurality of pipe-shaped vertical members 24 disposed between the balance portion 22a of the outer frame 22 and the lower frame 23, and the outer frame 2.
It consists of a plurality of horizontal members 25 each having a channel-shaped cross section and arranged between two vertical rod portions 22b. A front wheel mounting plate 26 is fixed to the lower surface at the front end of the lower frame 23, and the front wheel mounting plate 26 has a locking plate (an example of a locking part) having a lock hole 27.
28 is provided by welding, cutting, etc. The front wheel 21 is attached to the plate 26 via a support bracket 29 and a turning section 30.

The base panel body 33 includes a pair of left and right connecting plates 3.
4, a plurality of front and rear angle members 35 located between these connecting plates 34, and a base plate 36 provided between the upper surfaces of these connecting plates 34 and angle members 35. A cylindrical member 37 is attached to the pin member 16, which can be fitted outward from the left and right directions. Therefore, the base panel body 33
By fitting the cylindrical member 37 on the outside, the base panel body 33 can be freely raised up and down around the pin axis, and the base panel body 33 can be turned down sideways.
The receiver is stopped by the horizontal plate portion of each lower frame 13.23. These cylindrical member 37 and pin member 16 constitute the hinge device 2.

On both sides of the front part of the base panel body 33, there are locking plates of the plate 26 that act on the rear vertical rod portion 22b of the side panel body 20 when the base panel body 33 is in the upright position, and which are used to attach the front wheels when the base panel body 33 is in the horizontal position. Said locking device 40 acting on 28 is provided. That is, as shown in FIGS. 1 to 4, the main body 41 of the locking device 40 is a channel material with an open top and front and back sides, and the upper ends of both side plate parts 41A and 41B are welded to the lower surface of the angle member 35. Fixed. And both side plate parts 41
Through holes 42A and 42B in the left and right direction are formed in A and 41B, and here the through hole 4 in the inner side plate portion 41A
2A is formed into an oval shape that is slightly longer in the front and back direction, and
A pair of upper and lower slits 43a are formed in the arc forming portion on the front side, and a caulking operation piece 43 is formed between both slits 43a.

The lock pin 44, which is guided by the prize passage holes 42A and 42B and is slidable in the left and right directions, has an operating portion 44a bent at 90 degrees at its inner end. and lock pin 4
A tension spring 46 (an example of an elastic body) is provided between the inner end of 4 and a locking portion 45 formed on the inner side plate portion 41A.

Here, the tensioning direction of the tension spring 46 is outward (projection direction).
This is a rearward (lateral) diagonal direction, and thus the directionality of the lock pin 44 is determined with its operating portion 44a facing forward. Further, a first stopper 47 for maintaining the extracted position (unlocked) is provided by crushing at the middle portion of the lock pin 44 and on the surface opposite to the bending direction of the operating portion 44a. The first stopper 47 is formed by making the longitudinal length B of the through hole 42A longer than the protrusion length A from the front end of the lock pin 44 to the outer end of the first stopper 47, that is, by making A<B. , can freely pass through the through hole 42A provided in the inner side plate portion 41A,
Then, with the spring force in the diagonal direction of the tension spring 46 mentioned above,
The edge forming the through hole 42A can be freely engaged with the rear edge 48 from inside. The first stopper 47 of the lock pin 44 is located at a position slightly outward from the first stopper 47.
A second stopper 49 that is displaced by 90 degrees with respect to the stopper 47 and has a protrusion length C1 that is longer than the first stopper part protrusion length A1 and the longitudinal length B of the through hole, that is, A<B<C.
will be provided. This second stopper 49 restricts the maximum amount of protrusion of the lock pin 44 by coming into contact with the outer side plate portion 41B from the inside, and also by coming into contact with the inner side plate portion 41A from the outside to prevent extraction. , restricts the maximum retraction amount (extraction) against the tension spring 46. Note that the above-mentioned A<B
<C makes it impossible to set the lock pin 44 from the inside. In this case, using the slit 43a mentioned above,
As shown in the imaginary line in FIG. 3 and in FIG. By setting <C<D, the second stopper 49 can be inserted and set easily, and after setting, the crimping operation piece 43 can be crimped with a hammer or the like and returned to its original position as shown in Fig. 4. , second stopper 4
9 is prevented from passing inward.

Operation holes 3B are formed on both sides of the front portion of the base plate 36 at positions facing the operation portion 44a of the lock pin 44.

A stay 5 is provided between the front ends of both side panel bodies 20 for maintaining the distance and preventing the load from collapsing. That is, for example, the front vertical rod portion 2 of the left side panel body 20
2b is provided with a first holder 6 for the stay 5, and the front vertical rod portion 22b of the right side panel body 20 is provided with a second holder 7 to which the stay 5 can be freely engaged and detached.

The article conveyor 1 assembled as described above opens the right side panel body 20 at right angles to the back panel body IO, and swings the base panel body 33 horizontally via the hinge device 2. By moving the side panel body 20 to place it on the lower frame 23 of the side panel body 20 and locking the locking device 40, the load can be loaded. At this time, the locking device 40 moves the locking pin 44 out against the tension spring 46 as shown by the imaginary line in FIG. 1 and the imaginary line in FIG. 47 is the biasing force of the tension spring 46 in the diagonal direction.
8 is strongly engaged. As described above, by horizontally swinging the base panel body 33, the lock pin 44 faces the lock hole 27 of the locking plate 28. In this state, a hand is inserted through the upper operating hole 38 of the base panel body 33, and the operating portion 44a of the lock pin 44 is moved toward this side (front side) against the tension spring 46. As a result, the first stopper 47 comes off the edge 48, and the lock pin 44 protrudes outward due to the biasing force of the tension spring 46, causing the lock pin 44 to protrude outward from the lock hole 28 of the locking plate 28, as shown by solid lines in FIGS. to engage. Note that the protrusion is restricted by the second stopper 49 coming into contact with the outer side plate portion 41B.

When the article carrier 1 is unused after being transported as expected and unloaded, the stay 5 is first removed from the second holder 7. Then, as described above, the lock pin 44 is pulled by the spring 4.
6, the base panel body 33 is rotated upward via the hinge 2, and the back panel body 10
to follow. Then, the lock pin 44 is moved to protrude again to protrude to the rear of the rear vertical rod portion 22b. Next, the right side panel body 20 is rotated around the pin axis via the connector 3 or the like, so as to be aligned with the back panel body 10 side.

As a result, it can be folded into an L shape when viewed from above for storage.

Effects of the Invention According to the present invention having the above configuration, after the lock pin is inserted into the through hole and the second stopper is passed,
The caulking operation piece may be corrected by hammering or the like so that its cut and raised position returns to its original state, and the correction work can be performed easily and quickly. In addition, in use, the biasing force of the elastic body acts on the lock pin in an oblique direction, so when the lock pin is pulled out against the biasing force, the biasing force in the diagonal direction causes the first stop to move. can be strongly engaged with the main body side, thereby maintaining the extracted position of the lock pin without wobbling. The first stopper can be removed from the main body by moving the inner end of the lock pin against the biasing force, whereby the lock pin protrudes outward due to the biasing force and engages with the locking part. The desired lock can be achieved. In this way, a reliable locking action can be expected with a one-touch operation, and the locking position can be maintained by the biasing force. Furthermore, since the orientation of the lock pin is restricted by the biasing force of the elastic body, for example, the bending operation part can be housed in the main body horizontally without rotating under its own weight, which allows it to be placed in contact with the fork, etc. As a result, the lock pin maintains its shape and can always perform the desired locking action smoothly.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway plan view of the locking device, FIG. 2 is a partially cutaway front view of the same, FIG. 3 is a plan view of the main part, and FIG. The figure is a side view of the main parts when the same is used, Figure 5 is a side view of the main parts when the same is set,
6 is a side view showing the hinge portion, FIG. 7 is a perspective view of the whole, and FIG. 8 is a plan view thereof. DESCRIPTION OF SYMBOLS 1... Article conveyor, 2... Hinge, 3... Connector, 5... Stay, IO... Back panel body, 11
... Rear wheel, 16... Pin member, 17... Rear wheel mounting plate, 20... Side panel body, 21... Front wheel, 26... Front wheel mounting plate, 27.・Lock hole,
28... Locking plate (locking part), 33... Base panel body, 37... Cylindrical member, 38... Operation hole, 40...
・Lock device, 41...Main body, 41A, 41B...
・Side plate part, 42A. 42B... Through hole, 43... Caulking operation piece, 43a
...Slit, 44...Lock pin, 44a...
Operation unit, 46... tension spring (elastic body), 47...
First stopper, 48... edge, 49... second stopper. Agent Yoshi Morimoto Buddhist painting 2σ A top panel book, 438. - Figure 3 Figure 4 Figure 4/ Figure 5 Figure 1

Claims (1)

[Claims] 1. A locking device for connecting a base panel body to an upright panel body, which includes a main body fixed to the base panel body, and a locking device that is slidable while being guided by a through hole formed in the main body, and is installed vertically by protrusion. A lock pin that engages with a locking portion on the side of the shaped panel body, an elastic body provided between the body and the main body for urging the lock pin to move in the protrusion direction and the lateral direction, and an elastic body that can freely pass through the through hole and A first stopper for maintaining the extraction position provided on the lock pin so as to engage with the main body side from the protruding direction by the biasing force of the elastic body, and engage with the main body side when the lock pin is pulled out more than necessary against the elastic body. 1. A locking device for an article conveyance tool, comprising: a second stopper provided on a lock pin for preventing extraction; and a caulking operation piece cut and raised in the through hole forming portion.